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Add clock changes and mute gpios (#1938)
[mirror_ubuntu-zesty-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 2015-2016 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_NAN_DUAL] = { .type = NLA_U8 },
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 };
409
410 /* policy for the key attributes */
411 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
412 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
413 [NL80211_KEY_IDX] = { .type = NLA_U8 },
414 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
415 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
416 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
417 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
418 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
419 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
420 };
421
422 /* policy for the key default flags */
423 static const struct nla_policy
424 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
425 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
426 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
427 };
428
429 #ifdef CONFIG_PM
430 /* policy for WoWLAN attributes */
431 static const struct nla_policy
432 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
433 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
435 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
436 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
437 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
438 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
439 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
440 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
441 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
442 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
443 };
444
445 static const struct nla_policy
446 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
447 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
449 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
450 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
451 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
452 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
453 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
454 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
455 },
456 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
457 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
458 },
459 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
460 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
461 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
462 };
463 #endif /* CONFIG_PM */
464
465 /* policy for coalesce rule attributes */
466 static const struct nla_policy
467 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
468 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
469 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
470 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
471 };
472
473 /* policy for GTK rekey offload attributes */
474 static const struct nla_policy
475 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
476 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
477 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
478 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
479 };
480
481 static const struct nla_policy
482 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
483 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
484 .len = IEEE80211_MAX_SSID_LEN },
485 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
486 };
487
488 static const struct nla_policy
489 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
490 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
491 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
492 };
493
494 static const struct nla_policy
495 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
496 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
497 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
498 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
499 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
500 },
501 };
502
503 /* policy for NAN function attributes */
504 static const struct nla_policy
505 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
506 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
507 [NL80211_NAN_FUNC_SERVICE_ID] = { .type = NLA_BINARY,
508 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
509 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
510 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
511 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
512 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
513 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
514 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
515 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
516 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
517 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
518 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
519 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
520 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
521 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
522 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
523 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
524 };
525
526 /* policy for Service Response Filter attributes */
527 static const struct nla_policy
528 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
529 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
530 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
531 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
532 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
533 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
534 };
535
536 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
537 struct netlink_callback *cb,
538 struct cfg80211_registered_device **rdev,
539 struct wireless_dev **wdev)
540 {
541 int err;
542
543 if (!cb->args[0]) {
544 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
545 genl_family_attrbuf(&nl80211_fam),
546 nl80211_fam.maxattr, nl80211_policy);
547 if (err)
548 return err;
549
550 *wdev = __cfg80211_wdev_from_attrs(
551 sock_net(skb->sk),
552 genl_family_attrbuf(&nl80211_fam));
553 if (IS_ERR(*wdev))
554 return PTR_ERR(*wdev);
555 *rdev = wiphy_to_rdev((*wdev)->wiphy);
556 /* 0 is the first index - add 1 to parse only once */
557 cb->args[0] = (*rdev)->wiphy_idx + 1;
558 cb->args[1] = (*wdev)->identifier;
559 } else {
560 /* subtract the 1 again here */
561 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
562 struct wireless_dev *tmp;
563
564 if (!wiphy)
565 return -ENODEV;
566 *rdev = wiphy_to_rdev(wiphy);
567 *wdev = NULL;
568
569 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
570 if (tmp->identifier == cb->args[1]) {
571 *wdev = tmp;
572 break;
573 }
574 }
575
576 if (!*wdev)
577 return -ENODEV;
578 }
579
580 return 0;
581 }
582
583 /* IE validation */
584 static bool is_valid_ie_attr(const struct nlattr *attr)
585 {
586 const u8 *pos;
587 int len;
588
589 if (!attr)
590 return true;
591
592 pos = nla_data(attr);
593 len = nla_len(attr);
594
595 while (len) {
596 u8 elemlen;
597
598 if (len < 2)
599 return false;
600 len -= 2;
601
602 elemlen = pos[1];
603 if (elemlen > len)
604 return false;
605
606 len -= elemlen;
607 pos += 2 + elemlen;
608 }
609
610 return true;
611 }
612
613 /* message building helper */
614 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
615 int flags, u8 cmd)
616 {
617 /* since there is no private header just add the generic one */
618 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
619 }
620
621 static int nl80211_msg_put_channel(struct sk_buff *msg,
622 struct ieee80211_channel *chan,
623 bool large)
624 {
625 /* Some channels must be completely excluded from the
626 * list to protect old user-space tools from breaking
627 */
628 if (!large && chan->flags &
629 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
630 return 0;
631
632 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
633 chan->center_freq))
634 goto nla_put_failure;
635
636 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
638 goto nla_put_failure;
639 if (chan->flags & IEEE80211_CHAN_NO_IR) {
640 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
641 goto nla_put_failure;
642 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
643 goto nla_put_failure;
644 }
645 if (chan->flags & IEEE80211_CHAN_RADAR) {
646 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
647 goto nla_put_failure;
648 if (large) {
649 u32 time;
650
651 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
652
653 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
654 chan->dfs_state))
655 goto nla_put_failure;
656 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
657 time))
658 goto nla_put_failure;
659 if (nla_put_u32(msg,
660 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
661 chan->dfs_cac_ms))
662 goto nla_put_failure;
663 }
664 }
665
666 if (large) {
667 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
668 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
669 goto nla_put_failure;
670 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
671 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
672 goto nla_put_failure;
673 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
674 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
675 goto nla_put_failure;
676 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
677 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
678 goto nla_put_failure;
679 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
680 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
681 goto nla_put_failure;
682 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
683 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
684 goto nla_put_failure;
685 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
686 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
687 goto nla_put_failure;
688 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
689 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
690 goto nla_put_failure;
691 }
692
693 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
694 DBM_TO_MBM(chan->max_power)))
695 goto nla_put_failure;
696
697 return 0;
698
699 nla_put_failure:
700 return -ENOBUFS;
701 }
702
703 /* netlink command implementations */
704
705 struct key_parse {
706 struct key_params p;
707 int idx;
708 int type;
709 bool def, defmgmt;
710 bool def_uni, def_multi;
711 };
712
713 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
714 {
715 struct nlattr *tb[NL80211_KEY_MAX + 1];
716 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
717 nl80211_key_policy);
718 if (err)
719 return err;
720
721 k->def = !!tb[NL80211_KEY_DEFAULT];
722 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
723
724 if (k->def) {
725 k->def_uni = true;
726 k->def_multi = true;
727 }
728 if (k->defmgmt)
729 k->def_multi = true;
730
731 if (tb[NL80211_KEY_IDX])
732 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
733
734 if (tb[NL80211_KEY_DATA]) {
735 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
736 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
737 }
738
739 if (tb[NL80211_KEY_SEQ]) {
740 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
741 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
742 }
743
744 if (tb[NL80211_KEY_CIPHER])
745 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
746
747 if (tb[NL80211_KEY_TYPE]) {
748 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
749 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
750 return -EINVAL;
751 }
752
753 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
754 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
755
756 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
757 tb[NL80211_KEY_DEFAULT_TYPES],
758 nl80211_key_default_policy);
759 if (err)
760 return err;
761
762 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
763 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
764 }
765
766 return 0;
767 }
768
769 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
770 {
771 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
772 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
773 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
774 }
775
776 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
777 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
778 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
779 }
780
781 if (info->attrs[NL80211_ATTR_KEY_IDX])
782 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
783
784 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
785 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
786
787 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
788 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
789
790 if (k->def) {
791 k->def_uni = true;
792 k->def_multi = true;
793 }
794 if (k->defmgmt)
795 k->def_multi = true;
796
797 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
798 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
799 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
800 return -EINVAL;
801 }
802
803 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
804 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
805 int err = nla_parse_nested(
806 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
807 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
808 nl80211_key_default_policy);
809 if (err)
810 return err;
811
812 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
813 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
814 }
815
816 return 0;
817 }
818
819 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
820 {
821 int err;
822
823 memset(k, 0, sizeof(*k));
824 k->idx = -1;
825 k->type = -1;
826
827 if (info->attrs[NL80211_ATTR_KEY])
828 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
829 else
830 err = nl80211_parse_key_old(info, k);
831
832 if (err)
833 return err;
834
835 if (k->def && k->defmgmt)
836 return -EINVAL;
837
838 if (k->defmgmt) {
839 if (k->def_uni || !k->def_multi)
840 return -EINVAL;
841 }
842
843 if (k->idx != -1) {
844 if (k->defmgmt) {
845 if (k->idx < 4 || k->idx > 5)
846 return -EINVAL;
847 } else if (k->def) {
848 if (k->idx < 0 || k->idx > 3)
849 return -EINVAL;
850 } else {
851 if (k->idx < 0 || k->idx > 5)
852 return -EINVAL;
853 }
854 }
855
856 return 0;
857 }
858
859 static struct cfg80211_cached_keys *
860 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
861 struct nlattr *keys, bool *no_ht)
862 {
863 struct key_parse parse;
864 struct nlattr *key;
865 struct cfg80211_cached_keys *result;
866 int rem, err, def = 0;
867 bool have_key = false;
868
869 nla_for_each_nested(key, keys, rem) {
870 have_key = true;
871 break;
872 }
873
874 if (!have_key)
875 return NULL;
876
877 result = kzalloc(sizeof(*result), GFP_KERNEL);
878 if (!result)
879 return ERR_PTR(-ENOMEM);
880
881 result->def = -1;
882
883 nla_for_each_nested(key, keys, rem) {
884 memset(&parse, 0, sizeof(parse));
885 parse.idx = -1;
886
887 err = nl80211_parse_key_new(key, &parse);
888 if (err)
889 goto error;
890 err = -EINVAL;
891 if (!parse.p.key)
892 goto error;
893 if (parse.idx < 0 || parse.idx > 3)
894 goto error;
895 if (parse.def) {
896 if (def)
897 goto error;
898 def = 1;
899 result->def = parse.idx;
900 if (!parse.def_uni || !parse.def_multi)
901 goto error;
902 } else if (parse.defmgmt)
903 goto error;
904 err = cfg80211_validate_key_settings(rdev, &parse.p,
905 parse.idx, false, NULL);
906 if (err)
907 goto error;
908 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
909 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
910 err = -EINVAL;
911 goto error;
912 }
913 result->params[parse.idx].cipher = parse.p.cipher;
914 result->params[parse.idx].key_len = parse.p.key_len;
915 result->params[parse.idx].key = result->data[parse.idx];
916 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
917
918 /* must be WEP key if we got here */
919 if (no_ht)
920 *no_ht = true;
921 }
922
923 if (result->def < 0) {
924 err = -EINVAL;
925 goto error;
926 }
927
928 return result;
929 error:
930 kfree(result);
931 return ERR_PTR(err);
932 }
933
934 static int nl80211_key_allowed(struct wireless_dev *wdev)
935 {
936 ASSERT_WDEV_LOCK(wdev);
937
938 switch (wdev->iftype) {
939 case NL80211_IFTYPE_AP:
940 case NL80211_IFTYPE_AP_VLAN:
941 case NL80211_IFTYPE_P2P_GO:
942 case NL80211_IFTYPE_MESH_POINT:
943 break;
944 case NL80211_IFTYPE_ADHOC:
945 case NL80211_IFTYPE_STATION:
946 case NL80211_IFTYPE_P2P_CLIENT:
947 if (!wdev->current_bss)
948 return -ENOLINK;
949 break;
950 case NL80211_IFTYPE_UNSPECIFIED:
951 case NL80211_IFTYPE_OCB:
952 case NL80211_IFTYPE_MONITOR:
953 case NL80211_IFTYPE_NAN:
954 case NL80211_IFTYPE_P2P_DEVICE:
955 case NL80211_IFTYPE_WDS:
956 case NUM_NL80211_IFTYPES:
957 return -EINVAL;
958 }
959
960 return 0;
961 }
962
963 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
964 struct nlattr *tb)
965 {
966 struct ieee80211_channel *chan;
967
968 if (tb == NULL)
969 return NULL;
970 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
971 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
972 return NULL;
973 return chan;
974 }
975
976 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
977 {
978 struct nlattr *nl_modes = nla_nest_start(msg, attr);
979 int i;
980
981 if (!nl_modes)
982 goto nla_put_failure;
983
984 i = 0;
985 while (ifmodes) {
986 if ((ifmodes & 1) && nla_put_flag(msg, i))
987 goto nla_put_failure;
988 ifmodes >>= 1;
989 i++;
990 }
991
992 nla_nest_end(msg, nl_modes);
993 return 0;
994
995 nla_put_failure:
996 return -ENOBUFS;
997 }
998
999 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1000 struct sk_buff *msg,
1001 bool large)
1002 {
1003 struct nlattr *nl_combis;
1004 int i, j;
1005
1006 nl_combis = nla_nest_start(msg,
1007 NL80211_ATTR_INTERFACE_COMBINATIONS);
1008 if (!nl_combis)
1009 goto nla_put_failure;
1010
1011 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1012 const struct ieee80211_iface_combination *c;
1013 struct nlattr *nl_combi, *nl_limits;
1014
1015 c = &wiphy->iface_combinations[i];
1016
1017 nl_combi = nla_nest_start(msg, i + 1);
1018 if (!nl_combi)
1019 goto nla_put_failure;
1020
1021 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1022 if (!nl_limits)
1023 goto nla_put_failure;
1024
1025 for (j = 0; j < c->n_limits; j++) {
1026 struct nlattr *nl_limit;
1027
1028 nl_limit = nla_nest_start(msg, j + 1);
1029 if (!nl_limit)
1030 goto nla_put_failure;
1031 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1032 c->limits[j].max))
1033 goto nla_put_failure;
1034 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1035 c->limits[j].types))
1036 goto nla_put_failure;
1037 nla_nest_end(msg, nl_limit);
1038 }
1039
1040 nla_nest_end(msg, nl_limits);
1041
1042 if (c->beacon_int_infra_match &&
1043 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1044 goto nla_put_failure;
1045 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1046 c->num_different_channels) ||
1047 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1048 c->max_interfaces))
1049 goto nla_put_failure;
1050 if (large &&
1051 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1052 c->radar_detect_widths) ||
1053 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1054 c->radar_detect_regions)))
1055 goto nla_put_failure;
1056 if (c->beacon_int_min_gcd &&
1057 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1058 c->beacon_int_min_gcd))
1059 goto nla_put_failure;
1060
1061 nla_nest_end(msg, nl_combi);
1062 }
1063
1064 nla_nest_end(msg, nl_combis);
1065
1066 return 0;
1067 nla_put_failure:
1068 return -ENOBUFS;
1069 }
1070
1071 #ifdef CONFIG_PM
1072 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1073 struct sk_buff *msg)
1074 {
1075 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1076 struct nlattr *nl_tcp;
1077
1078 if (!tcp)
1079 return 0;
1080
1081 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1082 if (!nl_tcp)
1083 return -ENOBUFS;
1084
1085 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1086 tcp->data_payload_max))
1087 return -ENOBUFS;
1088
1089 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1090 tcp->data_payload_max))
1091 return -ENOBUFS;
1092
1093 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1094 return -ENOBUFS;
1095
1096 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1097 sizeof(*tcp->tok), tcp->tok))
1098 return -ENOBUFS;
1099
1100 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1101 tcp->data_interval_max))
1102 return -ENOBUFS;
1103
1104 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1105 tcp->wake_payload_max))
1106 return -ENOBUFS;
1107
1108 nla_nest_end(msg, nl_tcp);
1109 return 0;
1110 }
1111
1112 static int nl80211_send_wowlan(struct sk_buff *msg,
1113 struct cfg80211_registered_device *rdev,
1114 bool large)
1115 {
1116 struct nlattr *nl_wowlan;
1117
1118 if (!rdev->wiphy.wowlan)
1119 return 0;
1120
1121 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1122 if (!nl_wowlan)
1123 return -ENOBUFS;
1124
1125 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1126 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1127 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1128 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1129 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1130 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1131 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1132 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1133 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1134 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1135 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1136 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1137 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1138 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1139 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1140 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1141 return -ENOBUFS;
1142
1143 if (rdev->wiphy.wowlan->n_patterns) {
1144 struct nl80211_pattern_support pat = {
1145 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1146 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1147 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1148 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1149 };
1150
1151 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1152 sizeof(pat), &pat))
1153 return -ENOBUFS;
1154 }
1155
1156 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1157 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1158 rdev->wiphy.wowlan->max_nd_match_sets))
1159 return -ENOBUFS;
1160
1161 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1162 return -ENOBUFS;
1163
1164 nla_nest_end(msg, nl_wowlan);
1165
1166 return 0;
1167 }
1168 #endif
1169
1170 static int nl80211_send_coalesce(struct sk_buff *msg,
1171 struct cfg80211_registered_device *rdev)
1172 {
1173 struct nl80211_coalesce_rule_support rule;
1174
1175 if (!rdev->wiphy.coalesce)
1176 return 0;
1177
1178 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1179 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1180 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1181 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1182 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1183 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1184
1185 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1186 return -ENOBUFS;
1187
1188 return 0;
1189 }
1190
1191 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1192 struct ieee80211_supported_band *sband)
1193 {
1194 struct nlattr *nl_rates, *nl_rate;
1195 struct ieee80211_rate *rate;
1196 int i;
1197
1198 /* add HT info */
1199 if (sband->ht_cap.ht_supported &&
1200 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1201 sizeof(sband->ht_cap.mcs),
1202 &sband->ht_cap.mcs) ||
1203 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1204 sband->ht_cap.cap) ||
1205 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1206 sband->ht_cap.ampdu_factor) ||
1207 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1208 sband->ht_cap.ampdu_density)))
1209 return -ENOBUFS;
1210
1211 /* add VHT info */
1212 if (sband->vht_cap.vht_supported &&
1213 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1214 sizeof(sband->vht_cap.vht_mcs),
1215 &sband->vht_cap.vht_mcs) ||
1216 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1217 sband->vht_cap.cap)))
1218 return -ENOBUFS;
1219
1220 /* add bitrates */
1221 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1222 if (!nl_rates)
1223 return -ENOBUFS;
1224
1225 for (i = 0; i < sband->n_bitrates; i++) {
1226 nl_rate = nla_nest_start(msg, i);
1227 if (!nl_rate)
1228 return -ENOBUFS;
1229
1230 rate = &sband->bitrates[i];
1231 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1232 rate->bitrate))
1233 return -ENOBUFS;
1234 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1235 nla_put_flag(msg,
1236 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1237 return -ENOBUFS;
1238
1239 nla_nest_end(msg, nl_rate);
1240 }
1241
1242 nla_nest_end(msg, nl_rates);
1243
1244 return 0;
1245 }
1246
1247 static int
1248 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1249 const struct ieee80211_txrx_stypes *mgmt_stypes)
1250 {
1251 u16 stypes;
1252 struct nlattr *nl_ftypes, *nl_ifs;
1253 enum nl80211_iftype ift;
1254 int i;
1255
1256 if (!mgmt_stypes)
1257 return 0;
1258
1259 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1260 if (!nl_ifs)
1261 return -ENOBUFS;
1262
1263 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1264 nl_ftypes = nla_nest_start(msg, ift);
1265 if (!nl_ftypes)
1266 return -ENOBUFS;
1267 i = 0;
1268 stypes = mgmt_stypes[ift].tx;
1269 while (stypes) {
1270 if ((stypes & 1) &&
1271 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1272 (i << 4) | IEEE80211_FTYPE_MGMT))
1273 return -ENOBUFS;
1274 stypes >>= 1;
1275 i++;
1276 }
1277 nla_nest_end(msg, nl_ftypes);
1278 }
1279
1280 nla_nest_end(msg, nl_ifs);
1281
1282 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1283 if (!nl_ifs)
1284 return -ENOBUFS;
1285
1286 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1287 nl_ftypes = nla_nest_start(msg, ift);
1288 if (!nl_ftypes)
1289 return -ENOBUFS;
1290 i = 0;
1291 stypes = mgmt_stypes[ift].rx;
1292 while (stypes) {
1293 if ((stypes & 1) &&
1294 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1295 (i << 4) | IEEE80211_FTYPE_MGMT))
1296 return -ENOBUFS;
1297 stypes >>= 1;
1298 i++;
1299 }
1300 nla_nest_end(msg, nl_ftypes);
1301 }
1302 nla_nest_end(msg, nl_ifs);
1303
1304 return 0;
1305 }
1306
1307 #define CMD(op, n) \
1308 do { \
1309 if (rdev->ops->op) { \
1310 i++; \
1311 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1312 goto nla_put_failure; \
1313 } \
1314 } while (0)
1315
1316 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1317 struct sk_buff *msg)
1318 {
1319 int i = 0;
1320
1321 /*
1322 * do *NOT* add anything into this function, new things need to be
1323 * advertised only to new versions of userspace that can deal with
1324 * the split (and they can't possibly care about new features...
1325 */
1326 CMD(add_virtual_intf, NEW_INTERFACE);
1327 CMD(change_virtual_intf, SET_INTERFACE);
1328 CMD(add_key, NEW_KEY);
1329 CMD(start_ap, START_AP);
1330 CMD(add_station, NEW_STATION);
1331 CMD(add_mpath, NEW_MPATH);
1332 CMD(update_mesh_config, SET_MESH_CONFIG);
1333 CMD(change_bss, SET_BSS);
1334 CMD(auth, AUTHENTICATE);
1335 CMD(assoc, ASSOCIATE);
1336 CMD(deauth, DEAUTHENTICATE);
1337 CMD(disassoc, DISASSOCIATE);
1338 CMD(join_ibss, JOIN_IBSS);
1339 CMD(join_mesh, JOIN_MESH);
1340 CMD(set_pmksa, SET_PMKSA);
1341 CMD(del_pmksa, DEL_PMKSA);
1342 CMD(flush_pmksa, FLUSH_PMKSA);
1343 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1344 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1345 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1346 CMD(mgmt_tx, FRAME);
1347 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1348 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1349 i++;
1350 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1351 goto nla_put_failure;
1352 }
1353 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1354 rdev->ops->join_mesh) {
1355 i++;
1356 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1357 goto nla_put_failure;
1358 }
1359 CMD(set_wds_peer, SET_WDS_PEER);
1360 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1361 CMD(tdls_mgmt, TDLS_MGMT);
1362 CMD(tdls_oper, TDLS_OPER);
1363 }
1364 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1365 CMD(sched_scan_start, START_SCHED_SCAN);
1366 CMD(probe_client, PROBE_CLIENT);
1367 CMD(set_noack_map, SET_NOACK_MAP);
1368 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1369 i++;
1370 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1371 goto nla_put_failure;
1372 }
1373 CMD(start_p2p_device, START_P2P_DEVICE);
1374 CMD(set_mcast_rate, SET_MCAST_RATE);
1375 #ifdef CONFIG_NL80211_TESTMODE
1376 CMD(testmode_cmd, TESTMODE);
1377 #endif
1378
1379 if (rdev->ops->connect || rdev->ops->auth) {
1380 i++;
1381 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1382 goto nla_put_failure;
1383 }
1384
1385 if (rdev->ops->disconnect || rdev->ops->deauth) {
1386 i++;
1387 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1388 goto nla_put_failure;
1389 }
1390
1391 return i;
1392 nla_put_failure:
1393 return -ENOBUFS;
1394 }
1395
1396 struct nl80211_dump_wiphy_state {
1397 s64 filter_wiphy;
1398 long start;
1399 long split_start, band_start, chan_start, capa_start;
1400 bool split;
1401 };
1402
1403 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1404 enum nl80211_commands cmd,
1405 struct sk_buff *msg, u32 portid, u32 seq,
1406 int flags, struct nl80211_dump_wiphy_state *state)
1407 {
1408 void *hdr;
1409 struct nlattr *nl_bands, *nl_band;
1410 struct nlattr *nl_freqs, *nl_freq;
1411 struct nlattr *nl_cmds;
1412 enum nl80211_band band;
1413 struct ieee80211_channel *chan;
1414 int i;
1415 const struct ieee80211_txrx_stypes *mgmt_stypes =
1416 rdev->wiphy.mgmt_stypes;
1417 u32 features;
1418
1419 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1420 if (!hdr)
1421 return -ENOBUFS;
1422
1423 if (WARN_ON(!state))
1424 return -EINVAL;
1425
1426 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1427 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1428 wiphy_name(&rdev->wiphy)) ||
1429 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1430 cfg80211_rdev_list_generation))
1431 goto nla_put_failure;
1432
1433 if (cmd != NL80211_CMD_NEW_WIPHY)
1434 goto finish;
1435
1436 switch (state->split_start) {
1437 case 0:
1438 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1439 rdev->wiphy.retry_short) ||
1440 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1441 rdev->wiphy.retry_long) ||
1442 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1443 rdev->wiphy.frag_threshold) ||
1444 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1445 rdev->wiphy.rts_threshold) ||
1446 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1447 rdev->wiphy.coverage_class) ||
1448 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1449 rdev->wiphy.max_scan_ssids) ||
1450 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1451 rdev->wiphy.max_sched_scan_ssids) ||
1452 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1453 rdev->wiphy.max_scan_ie_len) ||
1454 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1455 rdev->wiphy.max_sched_scan_ie_len) ||
1456 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1457 rdev->wiphy.max_match_sets) ||
1458 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1459 rdev->wiphy.max_sched_scan_plans) ||
1460 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1461 rdev->wiphy.max_sched_scan_plan_interval) ||
1462 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1463 rdev->wiphy.max_sched_scan_plan_iterations))
1464 goto nla_put_failure;
1465
1466 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1467 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1468 goto nla_put_failure;
1469 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1470 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1471 goto nla_put_failure;
1472 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1473 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1474 goto nla_put_failure;
1475 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1476 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1477 goto nla_put_failure;
1478 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1479 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1480 goto nla_put_failure;
1481 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1482 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1483 goto nla_put_failure;
1484 state->split_start++;
1485 if (state->split)
1486 break;
1487 case 1:
1488 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1489 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1490 rdev->wiphy.cipher_suites))
1491 goto nla_put_failure;
1492
1493 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1494 rdev->wiphy.max_num_pmkids))
1495 goto nla_put_failure;
1496
1497 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1498 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1499 goto nla_put_failure;
1500
1501 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1502 rdev->wiphy.available_antennas_tx) ||
1503 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1504 rdev->wiphy.available_antennas_rx))
1505 goto nla_put_failure;
1506
1507 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1508 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1509 rdev->wiphy.probe_resp_offload))
1510 goto nla_put_failure;
1511
1512 if ((rdev->wiphy.available_antennas_tx ||
1513 rdev->wiphy.available_antennas_rx) &&
1514 rdev->ops->get_antenna) {
1515 u32 tx_ant = 0, rx_ant = 0;
1516 int res;
1517
1518 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1519 if (!res) {
1520 if (nla_put_u32(msg,
1521 NL80211_ATTR_WIPHY_ANTENNA_TX,
1522 tx_ant) ||
1523 nla_put_u32(msg,
1524 NL80211_ATTR_WIPHY_ANTENNA_RX,
1525 rx_ant))
1526 goto nla_put_failure;
1527 }
1528 }
1529
1530 state->split_start++;
1531 if (state->split)
1532 break;
1533 case 2:
1534 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1535 rdev->wiphy.interface_modes))
1536 goto nla_put_failure;
1537 state->split_start++;
1538 if (state->split)
1539 break;
1540 case 3:
1541 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1542 if (!nl_bands)
1543 goto nla_put_failure;
1544
1545 for (band = state->band_start;
1546 band < NUM_NL80211_BANDS; band++) {
1547 struct ieee80211_supported_band *sband;
1548
1549 sband = rdev->wiphy.bands[band];
1550
1551 if (!sband)
1552 continue;
1553
1554 nl_band = nla_nest_start(msg, band);
1555 if (!nl_band)
1556 goto nla_put_failure;
1557
1558 switch (state->chan_start) {
1559 case 0:
1560 if (nl80211_send_band_rateinfo(msg, sband))
1561 goto nla_put_failure;
1562 state->chan_start++;
1563 if (state->split)
1564 break;
1565 default:
1566 /* add frequencies */
1567 nl_freqs = nla_nest_start(
1568 msg, NL80211_BAND_ATTR_FREQS);
1569 if (!nl_freqs)
1570 goto nla_put_failure;
1571
1572 for (i = state->chan_start - 1;
1573 i < sband->n_channels;
1574 i++) {
1575 nl_freq = nla_nest_start(msg, i);
1576 if (!nl_freq)
1577 goto nla_put_failure;
1578
1579 chan = &sband->channels[i];
1580
1581 if (nl80211_msg_put_channel(
1582 msg, chan,
1583 state->split))
1584 goto nla_put_failure;
1585
1586 nla_nest_end(msg, nl_freq);
1587 if (state->split)
1588 break;
1589 }
1590 if (i < sband->n_channels)
1591 state->chan_start = i + 2;
1592 else
1593 state->chan_start = 0;
1594 nla_nest_end(msg, nl_freqs);
1595 }
1596
1597 nla_nest_end(msg, nl_band);
1598
1599 if (state->split) {
1600 /* start again here */
1601 if (state->chan_start)
1602 band--;
1603 break;
1604 }
1605 }
1606 nla_nest_end(msg, nl_bands);
1607
1608 if (band < NUM_NL80211_BANDS)
1609 state->band_start = band + 1;
1610 else
1611 state->band_start = 0;
1612
1613 /* if bands & channels are done, continue outside */
1614 if (state->band_start == 0 && state->chan_start == 0)
1615 state->split_start++;
1616 if (state->split)
1617 break;
1618 case 4:
1619 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1620 if (!nl_cmds)
1621 goto nla_put_failure;
1622
1623 i = nl80211_add_commands_unsplit(rdev, msg);
1624 if (i < 0)
1625 goto nla_put_failure;
1626 if (state->split) {
1627 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1628 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1629 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1630 CMD(channel_switch, CHANNEL_SWITCH);
1631 CMD(set_qos_map, SET_QOS_MAP);
1632 if (rdev->wiphy.features &
1633 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1634 CMD(add_tx_ts, ADD_TX_TS);
1635 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1636 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1637 }
1638 #undef CMD
1639
1640 nla_nest_end(msg, nl_cmds);
1641 state->split_start++;
1642 if (state->split)
1643 break;
1644 case 5:
1645 if (rdev->ops->remain_on_channel &&
1646 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1647 nla_put_u32(msg,
1648 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1649 rdev->wiphy.max_remain_on_channel_duration))
1650 goto nla_put_failure;
1651
1652 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1653 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1654 goto nla_put_failure;
1655
1656 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1657 goto nla_put_failure;
1658 state->split_start++;
1659 if (state->split)
1660 break;
1661 case 6:
1662 #ifdef CONFIG_PM
1663 if (nl80211_send_wowlan(msg, rdev, state->split))
1664 goto nla_put_failure;
1665 state->split_start++;
1666 if (state->split)
1667 break;
1668 #else
1669 state->split_start++;
1670 #endif
1671 case 7:
1672 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1673 rdev->wiphy.software_iftypes))
1674 goto nla_put_failure;
1675
1676 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1677 state->split))
1678 goto nla_put_failure;
1679
1680 state->split_start++;
1681 if (state->split)
1682 break;
1683 case 8:
1684 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1685 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1686 rdev->wiphy.ap_sme_capa))
1687 goto nla_put_failure;
1688
1689 features = rdev->wiphy.features;
1690 /*
1691 * We can only add the per-channel limit information if the
1692 * dump is split, otherwise it makes it too big. Therefore
1693 * only advertise it in that case.
1694 */
1695 if (state->split)
1696 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1697 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1698 goto nla_put_failure;
1699
1700 if (rdev->wiphy.ht_capa_mod_mask &&
1701 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1702 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1703 rdev->wiphy.ht_capa_mod_mask))
1704 goto nla_put_failure;
1705
1706 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1707 rdev->wiphy.max_acl_mac_addrs &&
1708 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1709 rdev->wiphy.max_acl_mac_addrs))
1710 goto nla_put_failure;
1711
1712 /*
1713 * Any information below this point is only available to
1714 * applications that can deal with it being split. This
1715 * helps ensure that newly added capabilities don't break
1716 * older tools by overrunning their buffers.
1717 *
1718 * We still increment split_start so that in the split
1719 * case we'll continue with more data in the next round,
1720 * but break unconditionally so unsplit data stops here.
1721 */
1722 state->split_start++;
1723 break;
1724 case 9:
1725 if (rdev->wiphy.extended_capabilities &&
1726 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1727 rdev->wiphy.extended_capabilities_len,
1728 rdev->wiphy.extended_capabilities) ||
1729 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1730 rdev->wiphy.extended_capabilities_len,
1731 rdev->wiphy.extended_capabilities_mask)))
1732 goto nla_put_failure;
1733
1734 if (rdev->wiphy.vht_capa_mod_mask &&
1735 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1736 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1737 rdev->wiphy.vht_capa_mod_mask))
1738 goto nla_put_failure;
1739
1740 state->split_start++;
1741 break;
1742 case 10:
1743 if (nl80211_send_coalesce(msg, rdev))
1744 goto nla_put_failure;
1745
1746 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1747 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1748 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1749 goto nla_put_failure;
1750
1751 if (rdev->wiphy.max_ap_assoc_sta &&
1752 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1753 rdev->wiphy.max_ap_assoc_sta))
1754 goto nla_put_failure;
1755
1756 state->split_start++;
1757 break;
1758 case 11:
1759 if (rdev->wiphy.n_vendor_commands) {
1760 const struct nl80211_vendor_cmd_info *info;
1761 struct nlattr *nested;
1762
1763 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1764 if (!nested)
1765 goto nla_put_failure;
1766
1767 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1768 info = &rdev->wiphy.vendor_commands[i].info;
1769 if (nla_put(msg, i + 1, sizeof(*info), info))
1770 goto nla_put_failure;
1771 }
1772 nla_nest_end(msg, nested);
1773 }
1774
1775 if (rdev->wiphy.n_vendor_events) {
1776 const struct nl80211_vendor_cmd_info *info;
1777 struct nlattr *nested;
1778
1779 nested = nla_nest_start(msg,
1780 NL80211_ATTR_VENDOR_EVENTS);
1781 if (!nested)
1782 goto nla_put_failure;
1783
1784 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1785 info = &rdev->wiphy.vendor_events[i];
1786 if (nla_put(msg, i + 1, sizeof(*info), info))
1787 goto nla_put_failure;
1788 }
1789 nla_nest_end(msg, nested);
1790 }
1791 state->split_start++;
1792 break;
1793 case 12:
1794 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1795 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1796 rdev->wiphy.max_num_csa_counters))
1797 goto nla_put_failure;
1798
1799 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1800 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1801 goto nla_put_failure;
1802
1803 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1804 sizeof(rdev->wiphy.ext_features),
1805 rdev->wiphy.ext_features))
1806 goto nla_put_failure;
1807
1808 if (rdev->wiphy.bss_select_support) {
1809 struct nlattr *nested;
1810 u32 bss_select_support = rdev->wiphy.bss_select_support;
1811
1812 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1813 if (!nested)
1814 goto nla_put_failure;
1815
1816 i = 0;
1817 while (bss_select_support) {
1818 if ((bss_select_support & 1) &&
1819 nla_put_flag(msg, i))
1820 goto nla_put_failure;
1821 i++;
1822 bss_select_support >>= 1;
1823 }
1824 nla_nest_end(msg, nested);
1825 }
1826
1827 state->split_start++;
1828 break;
1829 case 13:
1830 if (rdev->wiphy.num_iftype_ext_capab &&
1831 rdev->wiphy.iftype_ext_capab) {
1832 struct nlattr *nested_ext_capab, *nested;
1833
1834 nested = nla_nest_start(msg,
1835 NL80211_ATTR_IFTYPE_EXT_CAPA);
1836 if (!nested)
1837 goto nla_put_failure;
1838
1839 for (i = state->capa_start;
1840 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1841 const struct wiphy_iftype_ext_capab *capab;
1842
1843 capab = &rdev->wiphy.iftype_ext_capab[i];
1844
1845 nested_ext_capab = nla_nest_start(msg, i);
1846 if (!nested_ext_capab ||
1847 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1848 capab->iftype) ||
1849 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1850 capab->extended_capabilities_len,
1851 capab->extended_capabilities) ||
1852 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1853 capab->extended_capabilities_len,
1854 capab->extended_capabilities_mask))
1855 goto nla_put_failure;
1856
1857 nla_nest_end(msg, nested_ext_capab);
1858 if (state->split)
1859 break;
1860 }
1861 nla_nest_end(msg, nested);
1862 if (i < rdev->wiphy.num_iftype_ext_capab) {
1863 state->capa_start = i + 1;
1864 break;
1865 }
1866 }
1867
1868 /* done */
1869 state->split_start = 0;
1870 break;
1871 }
1872 finish:
1873 genlmsg_end(msg, hdr);
1874 return 0;
1875
1876 nla_put_failure:
1877 genlmsg_cancel(msg, hdr);
1878 return -EMSGSIZE;
1879 }
1880
1881 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1882 struct netlink_callback *cb,
1883 struct nl80211_dump_wiphy_state *state)
1884 {
1885 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1886 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1887 tb, nl80211_fam.maxattr, nl80211_policy);
1888 /* ignore parse errors for backward compatibility */
1889 if (ret)
1890 return 0;
1891
1892 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1893 if (tb[NL80211_ATTR_WIPHY])
1894 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1895 if (tb[NL80211_ATTR_WDEV])
1896 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1897 if (tb[NL80211_ATTR_IFINDEX]) {
1898 struct net_device *netdev;
1899 struct cfg80211_registered_device *rdev;
1900 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1901
1902 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1903 if (!netdev)
1904 return -ENODEV;
1905 if (netdev->ieee80211_ptr) {
1906 rdev = wiphy_to_rdev(
1907 netdev->ieee80211_ptr->wiphy);
1908 state->filter_wiphy = rdev->wiphy_idx;
1909 }
1910 }
1911
1912 return 0;
1913 }
1914
1915 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1916 {
1917 int idx = 0, ret;
1918 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1919 struct cfg80211_registered_device *rdev;
1920
1921 rtnl_lock();
1922 if (!state) {
1923 state = kzalloc(sizeof(*state), GFP_KERNEL);
1924 if (!state) {
1925 rtnl_unlock();
1926 return -ENOMEM;
1927 }
1928 state->filter_wiphy = -1;
1929 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1930 if (ret) {
1931 kfree(state);
1932 rtnl_unlock();
1933 return ret;
1934 }
1935 cb->args[0] = (long)state;
1936 }
1937
1938 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1939 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1940 continue;
1941 if (++idx <= state->start)
1942 continue;
1943 if (state->filter_wiphy != -1 &&
1944 state->filter_wiphy != rdev->wiphy_idx)
1945 continue;
1946 /* attempt to fit multiple wiphy data chunks into the skb */
1947 do {
1948 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1949 skb,
1950 NETLINK_CB(cb->skb).portid,
1951 cb->nlh->nlmsg_seq,
1952 NLM_F_MULTI, state);
1953 if (ret < 0) {
1954 /*
1955 * If sending the wiphy data didn't fit (ENOBUFS
1956 * or EMSGSIZE returned), this SKB is still
1957 * empty (so it's not too big because another
1958 * wiphy dataset is already in the skb) and
1959 * we've not tried to adjust the dump allocation
1960 * yet ... then adjust the alloc size to be
1961 * bigger, and return 1 but with the empty skb.
1962 * This results in an empty message being RX'ed
1963 * in userspace, but that is ignored.
1964 *
1965 * We can then retry with the larger buffer.
1966 */
1967 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1968 !skb->len && !state->split &&
1969 cb->min_dump_alloc < 4096) {
1970 cb->min_dump_alloc = 4096;
1971 state->split_start = 0;
1972 rtnl_unlock();
1973 return 1;
1974 }
1975 idx--;
1976 break;
1977 }
1978 } while (state->split_start > 0);
1979 break;
1980 }
1981 rtnl_unlock();
1982
1983 state->start = idx;
1984
1985 return skb->len;
1986 }
1987
1988 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1989 {
1990 kfree((void *)cb->args[0]);
1991 return 0;
1992 }
1993
1994 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1995 {
1996 struct sk_buff *msg;
1997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1998 struct nl80211_dump_wiphy_state state = {};
1999
2000 msg = nlmsg_new(4096, GFP_KERNEL);
2001 if (!msg)
2002 return -ENOMEM;
2003
2004 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2005 info->snd_portid, info->snd_seq, 0,
2006 &state) < 0) {
2007 nlmsg_free(msg);
2008 return -ENOBUFS;
2009 }
2010
2011 return genlmsg_reply(msg, info);
2012 }
2013
2014 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2015 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2016 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2017 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2018 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2019 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2020 };
2021
2022 static int parse_txq_params(struct nlattr *tb[],
2023 struct ieee80211_txq_params *txq_params)
2024 {
2025 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2026 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2027 !tb[NL80211_TXQ_ATTR_AIFS])
2028 return -EINVAL;
2029
2030 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2031 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2032 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2033 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2034 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2035
2036 if (txq_params->ac >= NL80211_NUM_ACS)
2037 return -EINVAL;
2038
2039 return 0;
2040 }
2041
2042 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2043 {
2044 /*
2045 * You can only set the channel explicitly for WDS interfaces,
2046 * all others have their channel managed via their respective
2047 * "establish a connection" command (connect, join, ...)
2048 *
2049 * For AP/GO and mesh mode, the channel can be set with the
2050 * channel userspace API, but is only stored and passed to the
2051 * low-level driver when the AP starts or the mesh is joined.
2052 * This is for backward compatibility, userspace can also give
2053 * the channel in the start-ap or join-mesh commands instead.
2054 *
2055 * Monitors are special as they are normally slaved to
2056 * whatever else is going on, so they have their own special
2057 * operation to set the monitor channel if possible.
2058 */
2059 return !wdev ||
2060 wdev->iftype == NL80211_IFTYPE_AP ||
2061 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2062 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2063 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2064 }
2065
2066 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2067 struct genl_info *info,
2068 struct cfg80211_chan_def *chandef)
2069 {
2070 u32 control_freq;
2071
2072 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2073 return -EINVAL;
2074
2075 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2076
2077 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2078 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2079 chandef->center_freq1 = control_freq;
2080 chandef->center_freq2 = 0;
2081
2082 /* Primary channel not allowed */
2083 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2084 return -EINVAL;
2085
2086 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2087 enum nl80211_channel_type chantype;
2088
2089 chantype = nla_get_u32(
2090 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2091
2092 switch (chantype) {
2093 case NL80211_CHAN_NO_HT:
2094 case NL80211_CHAN_HT20:
2095 case NL80211_CHAN_HT40PLUS:
2096 case NL80211_CHAN_HT40MINUS:
2097 cfg80211_chandef_create(chandef, chandef->chan,
2098 chantype);
2099 break;
2100 default:
2101 return -EINVAL;
2102 }
2103 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2104 chandef->width =
2105 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2106 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2107 chandef->center_freq1 =
2108 nla_get_u32(
2109 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2110 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2111 chandef->center_freq2 =
2112 nla_get_u32(
2113 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2114 }
2115
2116 if (!cfg80211_chandef_valid(chandef))
2117 return -EINVAL;
2118
2119 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2120 IEEE80211_CHAN_DISABLED))
2121 return -EINVAL;
2122
2123 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2124 chandef->width == NL80211_CHAN_WIDTH_10) &&
2125 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2126 return -EINVAL;
2127
2128 return 0;
2129 }
2130
2131 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2132 struct net_device *dev,
2133 struct genl_info *info)
2134 {
2135 struct cfg80211_chan_def chandef;
2136 int result;
2137 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2138 struct wireless_dev *wdev = NULL;
2139
2140 if (dev)
2141 wdev = dev->ieee80211_ptr;
2142 if (!nl80211_can_set_dev_channel(wdev))
2143 return -EOPNOTSUPP;
2144 if (wdev)
2145 iftype = wdev->iftype;
2146
2147 result = nl80211_parse_chandef(rdev, info, &chandef);
2148 if (result)
2149 return result;
2150
2151 switch (iftype) {
2152 case NL80211_IFTYPE_AP:
2153 case NL80211_IFTYPE_P2P_GO:
2154 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2155 iftype)) {
2156 result = -EINVAL;
2157 break;
2158 }
2159 if (wdev->beacon_interval) {
2160 if (!dev || !rdev->ops->set_ap_chanwidth ||
2161 !(rdev->wiphy.features &
2162 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2163 result = -EBUSY;
2164 break;
2165 }
2166
2167 /* Only allow dynamic channel width changes */
2168 if (chandef.chan != wdev->preset_chandef.chan) {
2169 result = -EBUSY;
2170 break;
2171 }
2172 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2173 if (result)
2174 break;
2175 }
2176 wdev->preset_chandef = chandef;
2177 result = 0;
2178 break;
2179 case NL80211_IFTYPE_MESH_POINT:
2180 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2181 break;
2182 case NL80211_IFTYPE_MONITOR:
2183 result = cfg80211_set_monitor_channel(rdev, &chandef);
2184 break;
2185 default:
2186 result = -EINVAL;
2187 }
2188
2189 return result;
2190 }
2191
2192 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2193 {
2194 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2195 struct net_device *netdev = info->user_ptr[1];
2196
2197 return __nl80211_set_channel(rdev, netdev, info);
2198 }
2199
2200 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2201 {
2202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2203 struct net_device *dev = info->user_ptr[1];
2204 struct wireless_dev *wdev = dev->ieee80211_ptr;
2205 const u8 *bssid;
2206
2207 if (!info->attrs[NL80211_ATTR_MAC])
2208 return -EINVAL;
2209
2210 if (netif_running(dev))
2211 return -EBUSY;
2212
2213 if (!rdev->ops->set_wds_peer)
2214 return -EOPNOTSUPP;
2215
2216 if (wdev->iftype != NL80211_IFTYPE_WDS)
2217 return -EOPNOTSUPP;
2218
2219 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2220 return rdev_set_wds_peer(rdev, dev, bssid);
2221 }
2222
2223 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2224 {
2225 struct cfg80211_registered_device *rdev;
2226 struct net_device *netdev = NULL;
2227 struct wireless_dev *wdev;
2228 int result = 0, rem_txq_params = 0;
2229 struct nlattr *nl_txq_params;
2230 u32 changed;
2231 u8 retry_short = 0, retry_long = 0;
2232 u32 frag_threshold = 0, rts_threshold = 0;
2233 u8 coverage_class = 0;
2234
2235 ASSERT_RTNL();
2236
2237 /*
2238 * Try to find the wiphy and netdev. Normally this
2239 * function shouldn't need the netdev, but this is
2240 * done for backward compatibility -- previously
2241 * setting the channel was done per wiphy, but now
2242 * it is per netdev. Previous userland like hostapd
2243 * also passed a netdev to set_wiphy, so that it is
2244 * possible to let that go to the right netdev!
2245 */
2246
2247 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2248 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2249
2250 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2251 if (netdev && netdev->ieee80211_ptr)
2252 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2253 else
2254 netdev = NULL;
2255 }
2256
2257 if (!netdev) {
2258 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2259 info->attrs);
2260 if (IS_ERR(rdev))
2261 return PTR_ERR(rdev);
2262 wdev = NULL;
2263 netdev = NULL;
2264 result = 0;
2265 } else
2266 wdev = netdev->ieee80211_ptr;
2267
2268 /*
2269 * end workaround code, by now the rdev is available
2270 * and locked, and wdev may or may not be NULL.
2271 */
2272
2273 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2274 result = cfg80211_dev_rename(
2275 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2276
2277 if (result)
2278 return result;
2279
2280 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2281 struct ieee80211_txq_params txq_params;
2282 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2283
2284 if (!rdev->ops->set_txq_params)
2285 return -EOPNOTSUPP;
2286
2287 if (!netdev)
2288 return -EINVAL;
2289
2290 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2291 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2292 return -EINVAL;
2293
2294 if (!netif_running(netdev))
2295 return -ENETDOWN;
2296
2297 nla_for_each_nested(nl_txq_params,
2298 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2299 rem_txq_params) {
2300 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2301 nl_txq_params,
2302 txq_params_policy);
2303 if (result)
2304 return result;
2305 result = parse_txq_params(tb, &txq_params);
2306 if (result)
2307 return result;
2308
2309 result = rdev_set_txq_params(rdev, netdev,
2310 &txq_params);
2311 if (result)
2312 return result;
2313 }
2314 }
2315
2316 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2317 result = __nl80211_set_channel(
2318 rdev,
2319 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2320 info);
2321 if (result)
2322 return result;
2323 }
2324
2325 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2326 struct wireless_dev *txp_wdev = wdev;
2327 enum nl80211_tx_power_setting type;
2328 int idx, mbm = 0;
2329
2330 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2331 txp_wdev = NULL;
2332
2333 if (!rdev->ops->set_tx_power)
2334 return -EOPNOTSUPP;
2335
2336 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2337 type = nla_get_u32(info->attrs[idx]);
2338
2339 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2340 (type != NL80211_TX_POWER_AUTOMATIC))
2341 return -EINVAL;
2342
2343 if (type != NL80211_TX_POWER_AUTOMATIC) {
2344 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2345 mbm = nla_get_u32(info->attrs[idx]);
2346 }
2347
2348 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2349 if (result)
2350 return result;
2351 }
2352
2353 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2354 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2355 u32 tx_ant, rx_ant;
2356
2357 if ((!rdev->wiphy.available_antennas_tx &&
2358 !rdev->wiphy.available_antennas_rx) ||
2359 !rdev->ops->set_antenna)
2360 return -EOPNOTSUPP;
2361
2362 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2363 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2364
2365 /* reject antenna configurations which don't match the
2366 * available antenna masks, except for the "all" mask */
2367 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2368 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2369 return -EINVAL;
2370
2371 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2372 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2373
2374 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2375 if (result)
2376 return result;
2377 }
2378
2379 changed = 0;
2380
2381 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2382 retry_short = nla_get_u8(
2383 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2384 if (retry_short == 0)
2385 return -EINVAL;
2386
2387 changed |= WIPHY_PARAM_RETRY_SHORT;
2388 }
2389
2390 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2391 retry_long = nla_get_u8(
2392 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2393 if (retry_long == 0)
2394 return -EINVAL;
2395
2396 changed |= WIPHY_PARAM_RETRY_LONG;
2397 }
2398
2399 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2400 frag_threshold = nla_get_u32(
2401 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2402 if (frag_threshold < 256)
2403 return -EINVAL;
2404
2405 if (frag_threshold != (u32) -1) {
2406 /*
2407 * Fragments (apart from the last one) are required to
2408 * have even length. Make the fragmentation code
2409 * simpler by stripping LSB should someone try to use
2410 * odd threshold value.
2411 */
2412 frag_threshold &= ~0x1;
2413 }
2414 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2415 }
2416
2417 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2418 rts_threshold = nla_get_u32(
2419 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2420 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2421 }
2422
2423 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2424 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2425 return -EINVAL;
2426
2427 coverage_class = nla_get_u8(
2428 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2429 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2430 }
2431
2432 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2433 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2434 return -EOPNOTSUPP;
2435
2436 changed |= WIPHY_PARAM_DYN_ACK;
2437 }
2438
2439 if (changed) {
2440 u8 old_retry_short, old_retry_long;
2441 u32 old_frag_threshold, old_rts_threshold;
2442 u8 old_coverage_class;
2443
2444 if (!rdev->ops->set_wiphy_params)
2445 return -EOPNOTSUPP;
2446
2447 old_retry_short = rdev->wiphy.retry_short;
2448 old_retry_long = rdev->wiphy.retry_long;
2449 old_frag_threshold = rdev->wiphy.frag_threshold;
2450 old_rts_threshold = rdev->wiphy.rts_threshold;
2451 old_coverage_class = rdev->wiphy.coverage_class;
2452
2453 if (changed & WIPHY_PARAM_RETRY_SHORT)
2454 rdev->wiphy.retry_short = retry_short;
2455 if (changed & WIPHY_PARAM_RETRY_LONG)
2456 rdev->wiphy.retry_long = retry_long;
2457 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2458 rdev->wiphy.frag_threshold = frag_threshold;
2459 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2460 rdev->wiphy.rts_threshold = rts_threshold;
2461 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2462 rdev->wiphy.coverage_class = coverage_class;
2463
2464 result = rdev_set_wiphy_params(rdev, changed);
2465 if (result) {
2466 rdev->wiphy.retry_short = old_retry_short;
2467 rdev->wiphy.retry_long = old_retry_long;
2468 rdev->wiphy.frag_threshold = old_frag_threshold;
2469 rdev->wiphy.rts_threshold = old_rts_threshold;
2470 rdev->wiphy.coverage_class = old_coverage_class;
2471 return result;
2472 }
2473 }
2474 return 0;
2475 }
2476
2477 static inline u64 wdev_id(struct wireless_dev *wdev)
2478 {
2479 return (u64)wdev->identifier |
2480 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2481 }
2482
2483 static int nl80211_send_chandef(struct sk_buff *msg,
2484 const struct cfg80211_chan_def *chandef)
2485 {
2486 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2487 return -EINVAL;
2488
2489 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2490 chandef->chan->center_freq))
2491 return -ENOBUFS;
2492 switch (chandef->width) {
2493 case NL80211_CHAN_WIDTH_20_NOHT:
2494 case NL80211_CHAN_WIDTH_20:
2495 case NL80211_CHAN_WIDTH_40:
2496 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2497 cfg80211_get_chandef_type(chandef)))
2498 return -ENOBUFS;
2499 break;
2500 default:
2501 break;
2502 }
2503 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2504 return -ENOBUFS;
2505 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2506 return -ENOBUFS;
2507 if (chandef->center_freq2 &&
2508 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2509 return -ENOBUFS;
2510 return 0;
2511 }
2512
2513 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2514 struct cfg80211_registered_device *rdev,
2515 struct wireless_dev *wdev, bool removal)
2516 {
2517 struct net_device *dev = wdev->netdev;
2518 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2519 void *hdr;
2520
2521 if (removal)
2522 cmd = NL80211_CMD_DEL_INTERFACE;
2523
2524 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2525 if (!hdr)
2526 return -1;
2527
2528 if (dev &&
2529 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2530 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2531 goto nla_put_failure;
2532
2533 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2534 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2535 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2536 NL80211_ATTR_PAD) ||
2537 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2538 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2539 rdev->devlist_generation ^
2540 (cfg80211_rdev_list_generation << 2)))
2541 goto nla_put_failure;
2542
2543 if (rdev->ops->get_channel) {
2544 int ret;
2545 struct cfg80211_chan_def chandef;
2546
2547 ret = rdev_get_channel(rdev, wdev, &chandef);
2548 if (ret == 0) {
2549 if (nl80211_send_chandef(msg, &chandef))
2550 goto nla_put_failure;
2551 }
2552 }
2553
2554 if (rdev->ops->get_tx_power) {
2555 int dbm, ret;
2556
2557 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2558 if (ret == 0 &&
2559 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2560 DBM_TO_MBM(dbm)))
2561 goto nla_put_failure;
2562 }
2563
2564 if (wdev->ssid_len) {
2565 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2566 goto nla_put_failure;
2567 }
2568
2569 genlmsg_end(msg, hdr);
2570 return 0;
2571
2572 nla_put_failure:
2573 genlmsg_cancel(msg, hdr);
2574 return -EMSGSIZE;
2575 }
2576
2577 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2578 {
2579 int wp_idx = 0;
2580 int if_idx = 0;
2581 int wp_start = cb->args[0];
2582 int if_start = cb->args[1];
2583 int filter_wiphy = -1;
2584 struct cfg80211_registered_device *rdev;
2585 struct wireless_dev *wdev;
2586 int ret;
2587
2588 rtnl_lock();
2589 if (!cb->args[2]) {
2590 struct nl80211_dump_wiphy_state state = {
2591 .filter_wiphy = -1,
2592 };
2593
2594 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2595 if (ret)
2596 goto out_unlock;
2597
2598 filter_wiphy = state.filter_wiphy;
2599
2600 /*
2601 * if filtering, set cb->args[2] to +1 since 0 is the default
2602 * value needed to determine that parsing is necessary.
2603 */
2604 if (filter_wiphy >= 0)
2605 cb->args[2] = filter_wiphy + 1;
2606 else
2607 cb->args[2] = -1;
2608 } else if (cb->args[2] > 0) {
2609 filter_wiphy = cb->args[2] - 1;
2610 }
2611
2612 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2613 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2614 continue;
2615 if (wp_idx < wp_start) {
2616 wp_idx++;
2617 continue;
2618 }
2619
2620 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2621 continue;
2622
2623 if_idx = 0;
2624
2625 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2626 if (if_idx < if_start) {
2627 if_idx++;
2628 continue;
2629 }
2630 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2631 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2632 rdev, wdev, false) < 0) {
2633 goto out;
2634 }
2635 if_idx++;
2636 }
2637
2638 wp_idx++;
2639 }
2640 out:
2641 cb->args[0] = wp_idx;
2642 cb->args[1] = if_idx;
2643
2644 ret = skb->len;
2645 out_unlock:
2646 rtnl_unlock();
2647
2648 return ret;
2649 }
2650
2651 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2652 {
2653 struct sk_buff *msg;
2654 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2655 struct wireless_dev *wdev = info->user_ptr[1];
2656
2657 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2658 if (!msg)
2659 return -ENOMEM;
2660
2661 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2662 rdev, wdev, false) < 0) {
2663 nlmsg_free(msg);
2664 return -ENOBUFS;
2665 }
2666
2667 return genlmsg_reply(msg, info);
2668 }
2669
2670 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2671 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2672 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2673 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2674 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2675 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2676 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2677 };
2678
2679 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2680 {
2681 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2682 int flag;
2683
2684 *mntrflags = 0;
2685
2686 if (!nla)
2687 return -EINVAL;
2688
2689 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2690 nla, mntr_flags_policy))
2691 return -EINVAL;
2692
2693 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2694 if (flags[flag])
2695 *mntrflags |= (1<<flag);
2696
2697 return 0;
2698 }
2699
2700 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2701 struct net_device *netdev, u8 use_4addr,
2702 enum nl80211_iftype iftype)
2703 {
2704 if (!use_4addr) {
2705 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2706 return -EBUSY;
2707 return 0;
2708 }
2709
2710 switch (iftype) {
2711 case NL80211_IFTYPE_AP_VLAN:
2712 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2713 return 0;
2714 break;
2715 case NL80211_IFTYPE_STATION:
2716 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2717 return 0;
2718 break;
2719 default:
2720 break;
2721 }
2722
2723 return -EOPNOTSUPP;
2724 }
2725
2726 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2727 {
2728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2729 struct vif_params params;
2730 int err;
2731 enum nl80211_iftype otype, ntype;
2732 struct net_device *dev = info->user_ptr[1];
2733 u32 _flags, *flags = NULL;
2734 bool change = false;
2735
2736 memset(&params, 0, sizeof(params));
2737
2738 otype = ntype = dev->ieee80211_ptr->iftype;
2739
2740 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2741 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2742 if (otype != ntype)
2743 change = true;
2744 if (ntype > NL80211_IFTYPE_MAX)
2745 return -EINVAL;
2746 }
2747
2748 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2749 struct wireless_dev *wdev = dev->ieee80211_ptr;
2750
2751 if (ntype != NL80211_IFTYPE_MESH_POINT)
2752 return -EINVAL;
2753 if (netif_running(dev))
2754 return -EBUSY;
2755
2756 wdev_lock(wdev);
2757 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2758 IEEE80211_MAX_MESH_ID_LEN);
2759 wdev->mesh_id_up_len =
2760 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2761 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2762 wdev->mesh_id_up_len);
2763 wdev_unlock(wdev);
2764 }
2765
2766 if (info->attrs[NL80211_ATTR_4ADDR]) {
2767 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2768 change = true;
2769 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2770 if (err)
2771 return err;
2772 } else {
2773 params.use_4addr = -1;
2774 }
2775
2776 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2777 if (ntype != NL80211_IFTYPE_MONITOR)
2778 return -EINVAL;
2779 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2780 &_flags);
2781 if (err)
2782 return err;
2783
2784 flags = &_flags;
2785 change = true;
2786 }
2787
2788 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2789 const u8 *mumimo_groups;
2790 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2791
2792 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2793 return -EOPNOTSUPP;
2794
2795 mumimo_groups =
2796 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2797
2798 /* bits 0 and 63 are reserved and must be zero */
2799 if ((mumimo_groups[0] & BIT(7)) ||
2800 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2801 return -EINVAL;
2802
2803 memcpy(params.vht_mumimo_groups, mumimo_groups,
2804 VHT_MUMIMO_GROUPS_DATA_LEN);
2805 change = true;
2806 }
2807
2808 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2809 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2810
2811 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2812 return -EOPNOTSUPP;
2813
2814 nla_memcpy(params.macaddr,
2815 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2816 ETH_ALEN);
2817 change = true;
2818 }
2819
2820 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2821 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2822 return -EOPNOTSUPP;
2823
2824 if (change)
2825 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2826 else
2827 err = 0;
2828
2829 if (!err && params.use_4addr != -1)
2830 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2831
2832 return err;
2833 }
2834
2835 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2836 {
2837 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2838 struct vif_params params;
2839 struct wireless_dev *wdev;
2840 struct sk_buff *msg;
2841 int err;
2842 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2843 u32 flags;
2844
2845 /* to avoid failing a new interface creation due to pending removal */
2846 cfg80211_destroy_ifaces(rdev);
2847
2848 memset(&params, 0, sizeof(params));
2849
2850 if (!info->attrs[NL80211_ATTR_IFNAME])
2851 return -EINVAL;
2852
2853 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2854 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2855 if (type > NL80211_IFTYPE_MAX)
2856 return -EINVAL;
2857 }
2858
2859 if (!rdev->ops->add_virtual_intf ||
2860 !(rdev->wiphy.interface_modes & (1 << type)))
2861 return -EOPNOTSUPP;
2862
2863 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2864 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2865 info->attrs[NL80211_ATTR_MAC]) {
2866 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2867 ETH_ALEN);
2868 if (!is_valid_ether_addr(params.macaddr))
2869 return -EADDRNOTAVAIL;
2870 }
2871
2872 if (info->attrs[NL80211_ATTR_4ADDR]) {
2873 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2874 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2875 if (err)
2876 return err;
2877 }
2878
2879 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2880 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2881 &flags);
2882
2883 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2884 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2885 return -EOPNOTSUPP;
2886
2887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2888 if (!msg)
2889 return -ENOMEM;
2890
2891 wdev = rdev_add_virtual_intf(rdev,
2892 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2893 NET_NAME_USER, type, err ? NULL : &flags,
2894 &params);
2895 if (WARN_ON(!wdev)) {
2896 nlmsg_free(msg);
2897 return -EPROTO;
2898 } else if (IS_ERR(wdev)) {
2899 nlmsg_free(msg);
2900 return PTR_ERR(wdev);
2901 }
2902
2903 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2904 wdev->owner_nlportid = info->snd_portid;
2905
2906 switch (type) {
2907 case NL80211_IFTYPE_MESH_POINT:
2908 if (!info->attrs[NL80211_ATTR_MESH_ID])
2909 break;
2910 wdev_lock(wdev);
2911 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2912 IEEE80211_MAX_MESH_ID_LEN);
2913 wdev->mesh_id_up_len =
2914 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2915 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2916 wdev->mesh_id_up_len);
2917 wdev_unlock(wdev);
2918 break;
2919 case NL80211_IFTYPE_NAN:
2920 case NL80211_IFTYPE_P2P_DEVICE:
2921 /*
2922 * P2P Device and NAN do not have a netdev, so don't go
2923 * through the netdev notifier and must be added here
2924 */
2925 mutex_init(&wdev->mtx);
2926 INIT_LIST_HEAD(&wdev->event_list);
2927 spin_lock_init(&wdev->event_lock);
2928 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2929 spin_lock_init(&wdev->mgmt_registrations_lock);
2930
2931 wdev->identifier = ++rdev->wdev_id;
2932 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2933 rdev->devlist_generation++;
2934 break;
2935 default:
2936 break;
2937 }
2938
2939 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2940 rdev, wdev, false) < 0) {
2941 nlmsg_free(msg);
2942 return -ENOBUFS;
2943 }
2944
2945 /*
2946 * For wdevs which have no associated netdev object (e.g. of type
2947 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2948 * For all other types, the event will be generated from the
2949 * netdev notifier
2950 */
2951 if (!wdev->netdev)
2952 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2953
2954 return genlmsg_reply(msg, info);
2955 }
2956
2957 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2958 {
2959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2960 struct wireless_dev *wdev = info->user_ptr[1];
2961
2962 if (!rdev->ops->del_virtual_intf)
2963 return -EOPNOTSUPP;
2964
2965 /*
2966 * If we remove a wireless device without a netdev then clear
2967 * user_ptr[1] so that nl80211_post_doit won't dereference it
2968 * to check if it needs to do dev_put(). Otherwise it crashes
2969 * since the wdev has been freed, unlike with a netdev where
2970 * we need the dev_put() for the netdev to really be freed.
2971 */
2972 if (!wdev->netdev)
2973 info->user_ptr[1] = NULL;
2974
2975 return rdev_del_virtual_intf(rdev, wdev);
2976 }
2977
2978 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2979 {
2980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2981 struct net_device *dev = info->user_ptr[1];
2982 u16 noack_map;
2983
2984 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2985 return -EINVAL;
2986
2987 if (!rdev->ops->set_noack_map)
2988 return -EOPNOTSUPP;
2989
2990 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2991
2992 return rdev_set_noack_map(rdev, dev, noack_map);
2993 }
2994
2995 struct get_key_cookie {
2996 struct sk_buff *msg;
2997 int error;
2998 int idx;
2999 };
3000
3001 static void get_key_callback(void *c, struct key_params *params)
3002 {
3003 struct nlattr *key;
3004 struct get_key_cookie *cookie = c;
3005
3006 if ((params->key &&
3007 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3008 params->key_len, params->key)) ||
3009 (params->seq &&
3010 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3011 params->seq_len, params->seq)) ||
3012 (params->cipher &&
3013 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3014 params->cipher)))
3015 goto nla_put_failure;
3016
3017 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3018 if (!key)
3019 goto nla_put_failure;
3020
3021 if ((params->key &&
3022 nla_put(cookie->msg, NL80211_KEY_DATA,
3023 params->key_len, params->key)) ||
3024 (params->seq &&
3025 nla_put(cookie->msg, NL80211_KEY_SEQ,
3026 params->seq_len, params->seq)) ||
3027 (params->cipher &&
3028 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3029 params->cipher)))
3030 goto nla_put_failure;
3031
3032 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3033 goto nla_put_failure;
3034
3035 nla_nest_end(cookie->msg, key);
3036
3037 return;
3038 nla_put_failure:
3039 cookie->error = 1;
3040 }
3041
3042 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3043 {
3044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3045 int err;
3046 struct net_device *dev = info->user_ptr[1];
3047 u8 key_idx = 0;
3048 const u8 *mac_addr = NULL;
3049 bool pairwise;
3050 struct get_key_cookie cookie = {
3051 .error = 0,
3052 };
3053 void *hdr;
3054 struct sk_buff *msg;
3055
3056 if (info->attrs[NL80211_ATTR_KEY_IDX])
3057 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3058
3059 if (key_idx > 5)
3060 return -EINVAL;
3061
3062 if (info->attrs[NL80211_ATTR_MAC])
3063 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3064
3065 pairwise = !!mac_addr;
3066 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3067 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3068
3069 if (kt >= NUM_NL80211_KEYTYPES)
3070 return -EINVAL;
3071 if (kt != NL80211_KEYTYPE_GROUP &&
3072 kt != NL80211_KEYTYPE_PAIRWISE)
3073 return -EINVAL;
3074 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3075 }
3076
3077 if (!rdev->ops->get_key)
3078 return -EOPNOTSUPP;
3079
3080 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3081 return -ENOENT;
3082
3083 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3084 if (!msg)
3085 return -ENOMEM;
3086
3087 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3088 NL80211_CMD_NEW_KEY);
3089 if (!hdr)
3090 goto nla_put_failure;
3091
3092 cookie.msg = msg;
3093 cookie.idx = key_idx;
3094
3095 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3096 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3097 goto nla_put_failure;
3098 if (mac_addr &&
3099 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3100 goto nla_put_failure;
3101
3102 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3103 get_key_callback);
3104
3105 if (err)
3106 goto free_msg;
3107
3108 if (cookie.error)
3109 goto nla_put_failure;
3110
3111 genlmsg_end(msg, hdr);
3112 return genlmsg_reply(msg, info);
3113
3114 nla_put_failure:
3115 err = -ENOBUFS;
3116 free_msg:
3117 nlmsg_free(msg);
3118 return err;
3119 }
3120
3121 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3122 {
3123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3124 struct key_parse key;
3125 int err;
3126 struct net_device *dev = info->user_ptr[1];
3127
3128 err = nl80211_parse_key(info, &key);
3129 if (err)
3130 return err;
3131
3132 if (key.idx < 0)
3133 return -EINVAL;
3134
3135 /* only support setting default key */
3136 if (!key.def && !key.defmgmt)
3137 return -EINVAL;
3138
3139 wdev_lock(dev->ieee80211_ptr);
3140
3141 if (key.def) {
3142 if (!rdev->ops->set_default_key) {
3143 err = -EOPNOTSUPP;
3144 goto out;
3145 }
3146
3147 err = nl80211_key_allowed(dev->ieee80211_ptr);
3148 if (err)
3149 goto out;
3150
3151 err = rdev_set_default_key(rdev, dev, key.idx,
3152 key.def_uni, key.def_multi);
3153
3154 if (err)
3155 goto out;
3156
3157 #ifdef CONFIG_CFG80211_WEXT
3158 dev->ieee80211_ptr->wext.default_key = key.idx;
3159 #endif
3160 } else {
3161 if (key.def_uni || !key.def_multi) {
3162 err = -EINVAL;
3163 goto out;
3164 }
3165
3166 if (!rdev->ops->set_default_mgmt_key) {
3167 err = -EOPNOTSUPP;
3168 goto out;
3169 }
3170
3171 err = nl80211_key_allowed(dev->ieee80211_ptr);
3172 if (err)
3173 goto out;
3174
3175 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3176 if (err)
3177 goto out;
3178
3179 #ifdef CONFIG_CFG80211_WEXT
3180 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3181 #endif
3182 }
3183
3184 out:
3185 wdev_unlock(dev->ieee80211_ptr);
3186
3187 return err;
3188 }
3189
3190 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3191 {
3192 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3193 int err;
3194 struct net_device *dev = info->user_ptr[1];
3195 struct key_parse key;
3196 const u8 *mac_addr = NULL;
3197
3198 err = nl80211_parse_key(info, &key);
3199 if (err)
3200 return err;
3201
3202 if (!key.p.key)
3203 return -EINVAL;
3204
3205 if (info->attrs[NL80211_ATTR_MAC])
3206 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3207
3208 if (key.type == -1) {
3209 if (mac_addr)
3210 key.type = NL80211_KEYTYPE_PAIRWISE;
3211 else
3212 key.type = NL80211_KEYTYPE_GROUP;
3213 }
3214
3215 /* for now */
3216 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3217 key.type != NL80211_KEYTYPE_GROUP)
3218 return -EINVAL;
3219
3220 if (!rdev->ops->add_key)
3221 return -EOPNOTSUPP;
3222
3223 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3224 key.type == NL80211_KEYTYPE_PAIRWISE,
3225 mac_addr))
3226 return -EINVAL;
3227
3228 wdev_lock(dev->ieee80211_ptr);
3229 err = nl80211_key_allowed(dev->ieee80211_ptr);
3230 if (!err)
3231 err = rdev_add_key(rdev, dev, key.idx,
3232 key.type == NL80211_KEYTYPE_PAIRWISE,
3233 mac_addr, &key.p);
3234 wdev_unlock(dev->ieee80211_ptr);
3235
3236 return err;
3237 }
3238
3239 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3240 {
3241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3242 int err;
3243 struct net_device *dev = info->user_ptr[1];
3244 u8 *mac_addr = NULL;
3245 struct key_parse key;
3246
3247 err = nl80211_parse_key(info, &key);
3248 if (err)
3249 return err;
3250
3251 if (info->attrs[NL80211_ATTR_MAC])
3252 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3253
3254 if (key.type == -1) {
3255 if (mac_addr)
3256 key.type = NL80211_KEYTYPE_PAIRWISE;
3257 else
3258 key.type = NL80211_KEYTYPE_GROUP;
3259 }
3260
3261 /* for now */
3262 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3263 key.type != NL80211_KEYTYPE_GROUP)
3264 return -EINVAL;
3265
3266 if (!rdev->ops->del_key)
3267 return -EOPNOTSUPP;
3268
3269 wdev_lock(dev->ieee80211_ptr);
3270 err = nl80211_key_allowed(dev->ieee80211_ptr);
3271
3272 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3273 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3274 err = -ENOENT;
3275
3276 if (!err)
3277 err = rdev_del_key(rdev, dev, key.idx,
3278 key.type == NL80211_KEYTYPE_PAIRWISE,
3279 mac_addr);
3280
3281 #ifdef CONFIG_CFG80211_WEXT
3282 if (!err) {
3283 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3284 dev->ieee80211_ptr->wext.default_key = -1;
3285 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3286 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3287 }
3288 #endif
3289 wdev_unlock(dev->ieee80211_ptr);
3290
3291 return err;
3292 }
3293
3294 /* This function returns an error or the number of nested attributes */
3295 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3296 {
3297 struct nlattr *attr;
3298 int n_entries = 0, tmp;
3299
3300 nla_for_each_nested(attr, nl_attr, tmp) {
3301 if (nla_len(attr) != ETH_ALEN)
3302 return -EINVAL;
3303
3304 n_entries++;
3305 }
3306
3307 return n_entries;
3308 }
3309
3310 /*
3311 * This function parses ACL information and allocates memory for ACL data.
3312 * On successful return, the calling function is responsible to free the
3313 * ACL buffer returned by this function.
3314 */
3315 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3316 struct genl_info *info)
3317 {
3318 enum nl80211_acl_policy acl_policy;
3319 struct nlattr *attr;
3320 struct cfg80211_acl_data *acl;
3321 int i = 0, n_entries, tmp;
3322
3323 if (!wiphy->max_acl_mac_addrs)
3324 return ERR_PTR(-EOPNOTSUPP);
3325
3326 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3327 return ERR_PTR(-EINVAL);
3328
3329 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3330 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3331 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3332 return ERR_PTR(-EINVAL);
3333
3334 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3335 return ERR_PTR(-EINVAL);
3336
3337 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3338 if (n_entries < 0)
3339 return ERR_PTR(n_entries);
3340
3341 if (n_entries > wiphy->max_acl_mac_addrs)
3342 return ERR_PTR(-ENOTSUPP);
3343
3344 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3345 GFP_KERNEL);
3346 if (!acl)
3347 return ERR_PTR(-ENOMEM);
3348
3349 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3350 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3351 i++;
3352 }
3353
3354 acl->n_acl_entries = n_entries;
3355 acl->acl_policy = acl_policy;
3356
3357 return acl;
3358 }
3359
3360 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3361 {
3362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3363 struct net_device *dev = info->user_ptr[1];
3364 struct cfg80211_acl_data *acl;
3365 int err;
3366
3367 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3368 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3369 return -EOPNOTSUPP;
3370
3371 if (!dev->ieee80211_ptr->beacon_interval)
3372 return -EINVAL;
3373
3374 acl = parse_acl_data(&rdev->wiphy, info);
3375 if (IS_ERR(acl))
3376 return PTR_ERR(acl);
3377
3378 err = rdev_set_mac_acl(rdev, dev, acl);
3379
3380 kfree(acl);
3381
3382 return err;
3383 }
3384
3385 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3386 u8 *rates, u8 rates_len)
3387 {
3388 u8 i;
3389 u32 mask = 0;
3390
3391 for (i = 0; i < rates_len; i++) {
3392 int rate = (rates[i] & 0x7f) * 5;
3393 int ridx;
3394
3395 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3396 struct ieee80211_rate *srate =
3397 &sband->bitrates[ridx];
3398 if (rate == srate->bitrate) {
3399 mask |= 1 << ridx;
3400 break;
3401 }
3402 }
3403 if (ridx == sband->n_bitrates)
3404 return 0; /* rate not found */
3405 }
3406
3407 return mask;
3408 }
3409
3410 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3411 u8 *rates, u8 rates_len,
3412 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3413 {
3414 u8 i;
3415
3416 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3417
3418 for (i = 0; i < rates_len; i++) {
3419 int ridx, rbit;
3420
3421 ridx = rates[i] / 8;
3422 rbit = BIT(rates[i] % 8);
3423
3424 /* check validity */
3425 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3426 return false;
3427
3428 /* check availability */
3429 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3430 mcs[ridx] |= rbit;
3431 else
3432 return false;
3433 }
3434
3435 return true;
3436 }
3437
3438 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3439 {
3440 u16 mcs_mask = 0;
3441
3442 switch (vht_mcs_map) {
3443 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3444 break;
3445 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3446 mcs_mask = 0x00FF;
3447 break;
3448 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3449 mcs_mask = 0x01FF;
3450 break;
3451 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3452 mcs_mask = 0x03FF;
3453 break;
3454 default:
3455 break;
3456 }
3457
3458 return mcs_mask;
3459 }
3460
3461 static void vht_build_mcs_mask(u16 vht_mcs_map,
3462 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3463 {
3464 u8 nss;
3465
3466 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3467 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3468 vht_mcs_map >>= 2;
3469 }
3470 }
3471
3472 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3473 struct nl80211_txrate_vht *txrate,
3474 u16 mcs[NL80211_VHT_NSS_MAX])
3475 {
3476 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3477 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3478 u8 i;
3479
3480 if (!sband->vht_cap.vht_supported)
3481 return false;
3482
3483 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3484
3485 /* Build vht_mcs_mask from VHT capabilities */
3486 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3487
3488 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3489 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3490 mcs[i] = txrate->mcs[i];
3491 else
3492 return false;
3493 }
3494
3495 return true;
3496 }
3497
3498 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3499 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3500 .len = NL80211_MAX_SUPP_RATES },
3501 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3502 .len = NL80211_MAX_SUPP_HT_RATES },
3503 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3504 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3505 };
3506
3507 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3508 struct cfg80211_bitrate_mask *mask)
3509 {
3510 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3512 int rem, i;
3513 struct nlattr *tx_rates;
3514 struct ieee80211_supported_band *sband;
3515 u16 vht_tx_mcs_map;
3516
3517 memset(mask, 0, sizeof(*mask));
3518 /* Default to all rates enabled */
3519 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3520 sband = rdev->wiphy.bands[i];
3521
3522 if (!sband)
3523 continue;
3524
3525 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3526 memcpy(mask->control[i].ht_mcs,
3527 sband->ht_cap.mcs.rx_mask,
3528 sizeof(mask->control[i].ht_mcs));
3529
3530 if (!sband->vht_cap.vht_supported)
3531 continue;
3532
3533 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3534 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3535 }
3536
3537 /* if no rates are given set it back to the defaults */
3538 if (!info->attrs[NL80211_ATTR_TX_RATES])
3539 goto out;
3540
3541 /* The nested attribute uses enum nl80211_band as the index. This maps
3542 * directly to the enum nl80211_band values used in cfg80211.
3543 */
3544 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3545 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3546 enum nl80211_band band = nla_type(tx_rates);
3547 int err;
3548
3549 if (band < 0 || band >= NUM_NL80211_BANDS)
3550 return -EINVAL;
3551 sband = rdev->wiphy.bands[band];
3552 if (sband == NULL)
3553 return -EINVAL;
3554 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3555 nl80211_txattr_policy);
3556 if (err)
3557 return err;
3558 if (tb[NL80211_TXRATE_LEGACY]) {
3559 mask->control[band].legacy = rateset_to_mask(
3560 sband,
3561 nla_data(tb[NL80211_TXRATE_LEGACY]),
3562 nla_len(tb[NL80211_TXRATE_LEGACY]));
3563 if ((mask->control[band].legacy == 0) &&
3564 nla_len(tb[NL80211_TXRATE_LEGACY]))
3565 return -EINVAL;
3566 }
3567 if (tb[NL80211_TXRATE_HT]) {
3568 if (!ht_rateset_to_mask(
3569 sband,
3570 nla_data(tb[NL80211_TXRATE_HT]),
3571 nla_len(tb[NL80211_TXRATE_HT]),
3572 mask->control[band].ht_mcs))
3573 return -EINVAL;
3574 }
3575 if (tb[NL80211_TXRATE_VHT]) {
3576 if (!vht_set_mcs_mask(
3577 sband,
3578 nla_data(tb[NL80211_TXRATE_VHT]),
3579 mask->control[band].vht_mcs))
3580 return -EINVAL;
3581 }
3582 if (tb[NL80211_TXRATE_GI]) {
3583 mask->control[band].gi =
3584 nla_get_u8(tb[NL80211_TXRATE_GI]);
3585 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3586 return -EINVAL;
3587 }
3588
3589 if (mask->control[band].legacy == 0) {
3590 /* don't allow empty legacy rates if HT or VHT
3591 * are not even supported.
3592 */
3593 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3594 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3595 return -EINVAL;
3596
3597 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3598 if (mask->control[band].ht_mcs[i])
3599 goto out;
3600
3601 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3602 if (mask->control[band].vht_mcs[i])
3603 goto out;
3604
3605 /* legacy and mcs rates may not be both empty */
3606 return -EINVAL;
3607 }
3608 }
3609
3610 out:
3611 return 0;
3612 }
3613
3614 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3615 enum nl80211_band band,
3616 struct cfg80211_bitrate_mask *beacon_rate)
3617 {
3618 u32 count_ht, count_vht, i;
3619 u32 rate = beacon_rate->control[band].legacy;
3620
3621 /* Allow only one rate */
3622 if (hweight32(rate) > 1)
3623 return -EINVAL;
3624
3625 count_ht = 0;
3626 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3627 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3628 return -EINVAL;
3629 } else if (beacon_rate->control[band].ht_mcs[i]) {
3630 count_ht++;
3631 if (count_ht > 1)
3632 return -EINVAL;
3633 }
3634 if (count_ht && rate)
3635 return -EINVAL;
3636 }
3637
3638 count_vht = 0;
3639 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3640 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3641 return -EINVAL;
3642 } else if (beacon_rate->control[band].vht_mcs[i]) {
3643 count_vht++;
3644 if (count_vht > 1)
3645 return -EINVAL;
3646 }
3647 if (count_vht && rate)
3648 return -EINVAL;
3649 }
3650
3651 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3652 return -EINVAL;
3653
3654 if (rate &&
3655 !wiphy_ext_feature_isset(&rdev->wiphy,
3656 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3657 return -EINVAL;
3658 if (count_ht &&
3659 !wiphy_ext_feature_isset(&rdev->wiphy,
3660 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3661 return -EINVAL;
3662 if (count_vht &&
3663 !wiphy_ext_feature_isset(&rdev->wiphy,
3664 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3665 return -EINVAL;
3666
3667 return 0;
3668 }
3669
3670 static int nl80211_parse_beacon(struct nlattr *attrs[],
3671 struct cfg80211_beacon_data *bcn)
3672 {
3673 bool haveinfo = false;
3674
3675 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3676 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3677 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3678 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3679 return -EINVAL;
3680
3681 memset(bcn, 0, sizeof(*bcn));
3682
3683 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3684 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3685 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3686 if (!bcn->head_len)
3687 return -EINVAL;
3688 haveinfo = true;
3689 }
3690
3691 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3692 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3693 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3694 haveinfo = true;
3695 }
3696
3697 if (!haveinfo)
3698 return -EINVAL;
3699
3700 if (attrs[NL80211_ATTR_IE]) {
3701 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3702 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3703 }
3704
3705 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3706 bcn->proberesp_ies =
3707 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3708 bcn->proberesp_ies_len =
3709 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3710 }
3711
3712 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3713 bcn->assocresp_ies =
3714 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3715 bcn->assocresp_ies_len =
3716 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3717 }
3718
3719 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3720 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3721 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3722 }
3723
3724 return 0;
3725 }
3726
3727 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3728 struct cfg80211_ap_settings *params)
3729 {
3730 struct wireless_dev *wdev;
3731 bool ret = false;
3732
3733 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3734 if (wdev->iftype != NL80211_IFTYPE_AP &&
3735 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3736 continue;
3737
3738 if (!wdev->preset_chandef.chan)
3739 continue;
3740
3741 params->chandef = wdev->preset_chandef;
3742 ret = true;
3743 break;
3744 }
3745
3746 return ret;
3747 }
3748
3749 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3750 enum nl80211_auth_type auth_type,
3751 enum nl80211_commands cmd)
3752 {
3753 if (auth_type > NL80211_AUTHTYPE_MAX)
3754 return false;
3755
3756 switch (cmd) {
3757 case NL80211_CMD_AUTHENTICATE:
3758 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3759 auth_type == NL80211_AUTHTYPE_SAE)
3760 return false;
3761 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3762 NL80211_EXT_FEATURE_FILS_STA) &&
3763 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3764 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3765 auth_type == NL80211_AUTHTYPE_FILS_PK))
3766 return false;
3767 return true;
3768 case NL80211_CMD_CONNECT:
3769 case NL80211_CMD_START_AP:
3770 /* SAE not supported yet */
3771 if (auth_type == NL80211_AUTHTYPE_SAE)
3772 return false;
3773 /* FILS not supported yet */
3774 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3775 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3776 auth_type == NL80211_AUTHTYPE_FILS_PK)
3777 return false;
3778 return true;
3779 default:
3780 return false;
3781 }
3782 }
3783
3784 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3785 {
3786 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3787 struct net_device *dev = info->user_ptr[1];
3788 struct wireless_dev *wdev = dev->ieee80211_ptr;
3789 struct cfg80211_ap_settings params;
3790 int err;
3791
3792 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3793 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3794 return -EOPNOTSUPP;
3795
3796 if (!rdev->ops->start_ap)
3797 return -EOPNOTSUPP;
3798
3799 if (wdev->beacon_interval)
3800 return -EALREADY;
3801
3802 memset(&params, 0, sizeof(params));
3803
3804 /* these are required for START_AP */
3805 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3806 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3807 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3808 return -EINVAL;
3809
3810 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3811 if (err)
3812 return err;
3813
3814 params.beacon_interval =
3815 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3816 params.dtim_period =
3817 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3818
3819 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3820 params.beacon_interval);
3821 if (err)
3822 return err;
3823
3824 /*
3825 * In theory, some of these attributes should be required here
3826 * but since they were not used when the command was originally
3827 * added, keep them optional for old user space programs to let
3828 * them continue to work with drivers that do not need the
3829 * additional information -- drivers must check!
3830 */
3831 if (info->attrs[NL80211_ATTR_SSID]) {
3832 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3833 params.ssid_len =
3834 nla_len(info->attrs[NL80211_ATTR_SSID]);
3835 if (params.ssid_len == 0 ||
3836 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3837 return -EINVAL;
3838 }
3839
3840 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3841 params.hidden_ssid = nla_get_u32(
3842 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3843 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3844 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3845 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3846 return -EINVAL;
3847 }
3848
3849 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3850
3851 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3852 params.auth_type = nla_get_u32(
3853 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3854 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3855 NL80211_CMD_START_AP))
3856 return -EINVAL;
3857 } else
3858 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3859
3860 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3861 NL80211_MAX_NR_CIPHER_SUITES);
3862 if (err)
3863 return err;
3864
3865 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3866 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3867 return -EOPNOTSUPP;
3868 params.inactivity_timeout = nla_get_u16(
3869 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3870 }
3871
3872 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3873 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3874 return -EINVAL;
3875 params.p2p_ctwindow =
3876 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3877 if (params.p2p_ctwindow > 127)
3878 return -EINVAL;
3879 if (params.p2p_ctwindow != 0 &&
3880 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3881 return -EINVAL;
3882 }
3883
3884 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3885 u8 tmp;
3886
3887 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3888 return -EINVAL;
3889 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3890 if (tmp > 1)
3891 return -EINVAL;
3892 params.p2p_opp_ps = tmp;
3893 if (params.p2p_opp_ps != 0 &&
3894 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3895 return -EINVAL;
3896 }
3897
3898 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3899 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3900 if (err)
3901 return err;
3902 } else if (wdev->preset_chandef.chan) {
3903 params.chandef = wdev->preset_chandef;
3904 } else if (!nl80211_get_ap_channel(rdev, &params))
3905 return -EINVAL;
3906
3907 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3908 wdev->iftype))
3909 return -EINVAL;
3910
3911 if (info->attrs[NL80211_ATTR_TX_RATES]) {
3912 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3913 if (err)
3914 return err;
3915
3916 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3917 &params.beacon_rate);
3918 if (err)
3919 return err;
3920 }
3921
3922 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3923 params.smps_mode =
3924 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3925 switch (params.smps_mode) {
3926 case NL80211_SMPS_OFF:
3927 break;
3928 case NL80211_SMPS_STATIC:
3929 if (!(rdev->wiphy.features &
3930 NL80211_FEATURE_STATIC_SMPS))
3931 return -EINVAL;
3932 break;
3933 case NL80211_SMPS_DYNAMIC:
3934 if (!(rdev->wiphy.features &
3935 NL80211_FEATURE_DYNAMIC_SMPS))
3936 return -EINVAL;
3937 break;
3938 default:
3939 return -EINVAL;
3940 }
3941 } else {
3942 params.smps_mode = NL80211_SMPS_OFF;
3943 }
3944
3945 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3946 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3947 return -EOPNOTSUPP;
3948
3949 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3950 params.acl = parse_acl_data(&rdev->wiphy, info);
3951 if (IS_ERR(params.acl))
3952 return PTR_ERR(params.acl);
3953 }
3954
3955 wdev_lock(wdev);
3956 err = rdev_start_ap(rdev, dev, &params);
3957 if (!err) {
3958 wdev->preset_chandef = params.chandef;
3959 wdev->beacon_interval = params.beacon_interval;
3960 wdev->chandef = params.chandef;
3961 wdev->ssid_len = params.ssid_len;
3962 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3963 }
3964 wdev_unlock(wdev);
3965
3966 kfree(params.acl);
3967
3968 return err;
3969 }
3970
3971 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3972 {
3973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3974 struct net_device *dev = info->user_ptr[1];
3975 struct wireless_dev *wdev = dev->ieee80211_ptr;
3976 struct cfg80211_beacon_data params;
3977 int err;
3978
3979 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3980 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3981 return -EOPNOTSUPP;
3982
3983 if (!rdev->ops->change_beacon)
3984 return -EOPNOTSUPP;
3985
3986 if (!wdev->beacon_interval)
3987 return -EINVAL;
3988
3989 err = nl80211_parse_beacon(info->attrs, &params);
3990 if (err)
3991 return err;
3992
3993 wdev_lock(wdev);
3994 err = rdev_change_beacon(rdev, dev, &params);
3995 wdev_unlock(wdev);
3996
3997 return err;
3998 }
3999
4000 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4001 {
4002 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4003 struct net_device *dev = info->user_ptr[1];
4004
4005 return cfg80211_stop_ap(rdev, dev, false);
4006 }
4007
4008 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4009 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4010 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4011 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4012 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4013 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4014 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4015 };
4016
4017 static int parse_station_flags(struct genl_info *info,
4018 enum nl80211_iftype iftype,
4019 struct station_parameters *params)
4020 {
4021 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4022 struct nlattr *nla;
4023 int flag;
4024
4025 /*
4026 * Try parsing the new attribute first so userspace
4027 * can specify both for older kernels.
4028 */
4029 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4030 if (nla) {
4031 struct nl80211_sta_flag_update *sta_flags;
4032
4033 sta_flags = nla_data(nla);
4034 params->sta_flags_mask = sta_flags->mask;
4035 params->sta_flags_set = sta_flags->set;
4036 params->sta_flags_set &= params->sta_flags_mask;
4037 if ((params->sta_flags_mask |
4038 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4039 return -EINVAL;
4040 return 0;
4041 }
4042
4043 /* if present, parse the old attribute */
4044
4045 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4046 if (!nla)
4047 return 0;
4048
4049 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4050 nla, sta_flags_policy))
4051 return -EINVAL;
4052
4053 /*
4054 * Only allow certain flags for interface types so that
4055 * other attributes are silently ignored. Remember that
4056 * this is backward compatibility code with old userspace
4057 * and shouldn't be hit in other cases anyway.
4058 */
4059 switch (iftype) {
4060 case NL80211_IFTYPE_AP:
4061 case NL80211_IFTYPE_AP_VLAN:
4062 case NL80211_IFTYPE_P2P_GO:
4063 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4064 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4065 BIT(NL80211_STA_FLAG_WME) |
4066 BIT(NL80211_STA_FLAG_MFP);
4067 break;
4068 case NL80211_IFTYPE_P2P_CLIENT:
4069 case NL80211_IFTYPE_STATION:
4070 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4071 BIT(NL80211_STA_FLAG_TDLS_PEER);
4072 break;
4073 case NL80211_IFTYPE_MESH_POINT:
4074 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4075 BIT(NL80211_STA_FLAG_MFP) |
4076 BIT(NL80211_STA_FLAG_AUTHORIZED);
4077 default:
4078 return -EINVAL;
4079 }
4080
4081 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4082 if (flags[flag]) {
4083 params->sta_flags_set |= (1<<flag);
4084
4085 /* no longer support new API additions in old API */
4086 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4087 return -EINVAL;
4088 }
4089 }
4090
4091 return 0;
4092 }
4093
4094 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4095 int attr)
4096 {
4097 struct nlattr *rate;
4098 u32 bitrate;
4099 u16 bitrate_compat;
4100 enum nl80211_attrs rate_flg;
4101
4102 rate = nla_nest_start(msg, attr);
4103 if (!rate)
4104 return false;
4105
4106 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4107 bitrate = cfg80211_calculate_bitrate(info);
4108 /* report 16-bit bitrate only if we can */
4109 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4110 if (bitrate > 0 &&
4111 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4112 return false;
4113 if (bitrate_compat > 0 &&
4114 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4115 return false;
4116
4117 switch (info->bw) {
4118 case RATE_INFO_BW_5:
4119 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4120 break;
4121 case RATE_INFO_BW_10:
4122 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4123 break;
4124 default:
4125 WARN_ON(1);
4126 /* fall through */
4127 case RATE_INFO_BW_20:
4128 rate_flg = 0;
4129 break;
4130 case RATE_INFO_BW_40:
4131 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4132 break;
4133 case RATE_INFO_BW_80:
4134 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4135 break;
4136 case RATE_INFO_BW_160:
4137 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4138 break;
4139 }
4140
4141 if (rate_flg && nla_put_flag(msg, rate_flg))
4142 return false;
4143
4144 if (info->flags & RATE_INFO_FLAGS_MCS) {
4145 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4146 return false;
4147 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4148 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4149 return false;
4150 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4151 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4152 return false;
4153 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4154 return false;
4155 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4156 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4157 return false;
4158 }
4159
4160 nla_nest_end(msg, rate);
4161 return true;
4162 }
4163
4164 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4165 int id)
4166 {
4167 void *attr;
4168 int i = 0;
4169
4170 if (!mask)
4171 return true;
4172
4173 attr = nla_nest_start(msg, id);
4174 if (!attr)
4175 return false;
4176
4177 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4178 if (!(mask & BIT(i)))
4179 continue;
4180
4181 if (nla_put_u8(msg, i, signal[i]))
4182 return false;
4183 }
4184
4185 nla_nest_end(msg, attr);
4186
4187 return true;
4188 }
4189
4190 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4191 u32 seq, int flags,
4192 struct cfg80211_registered_device *rdev,
4193 struct net_device *dev,
4194 const u8 *mac_addr, struct station_info *sinfo)
4195 {
4196 void *hdr;
4197 struct nlattr *sinfoattr, *bss_param;
4198
4199 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4200 if (!hdr)
4201 return -1;
4202
4203 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4204 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4205 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4206 goto nla_put_failure;
4207
4208 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4209 if (!sinfoattr)
4210 goto nla_put_failure;
4211
4212 #define PUT_SINFO(attr, memb, type) do { \
4213 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4214 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4215 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4216 sinfo->memb)) \
4217 goto nla_put_failure; \
4218 } while (0)
4219 #define PUT_SINFO_U64(attr, memb) do { \
4220 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4221 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4222 sinfo->memb, NL80211_STA_INFO_PAD)) \
4223 goto nla_put_failure; \
4224 } while (0)
4225
4226 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4227 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4228
4229 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4230 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4231 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4232 (u32)sinfo->rx_bytes))
4233 goto nla_put_failure;
4234
4235 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4236 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4237 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4238 (u32)sinfo->tx_bytes))
4239 goto nla_put_failure;
4240
4241 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4242 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4243 PUT_SINFO(LLID, llid, u16);
4244 PUT_SINFO(PLID, plid, u16);
4245 PUT_SINFO(PLINK_STATE, plink_state, u8);
4246 PUT_SINFO_U64(RX_DURATION, rx_duration);
4247
4248 switch (rdev->wiphy.signal_type) {
4249 case CFG80211_SIGNAL_TYPE_MBM:
4250 PUT_SINFO(SIGNAL, signal, u8);
4251 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4252 break;
4253 default:
4254 break;
4255 }
4256 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4257 if (!nl80211_put_signal(msg, sinfo->chains,
4258 sinfo->chain_signal,
4259 NL80211_STA_INFO_CHAIN_SIGNAL))
4260 goto nla_put_failure;
4261 }
4262 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4263 if (!nl80211_put_signal(msg, sinfo->chains,
4264 sinfo->chain_signal_avg,
4265 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4266 goto nla_put_failure;
4267 }
4268 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4269 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4270 NL80211_STA_INFO_TX_BITRATE))
4271 goto nla_put_failure;
4272 }
4273 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4274 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4275 NL80211_STA_INFO_RX_BITRATE))
4276 goto nla_put_failure;
4277 }
4278
4279 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4280 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4281 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4282 PUT_SINFO(TX_FAILED, tx_failed, u32);
4283 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4284 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4285 PUT_SINFO(LOCAL_PM, local_pm, u32);
4286 PUT_SINFO(PEER_PM, peer_pm, u32);
4287 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4288
4289 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4290 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4291 if (!bss_param)
4292 goto nla_put_failure;
4293
4294 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4295 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4296 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4297 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4298 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4299 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4300 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4301 sinfo->bss_param.dtim_period) ||
4302 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4303 sinfo->bss_param.beacon_interval))
4304 goto nla_put_failure;
4305
4306 nla_nest_end(msg, bss_param);
4307 }
4308 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4309 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4310 sizeof(struct nl80211_sta_flag_update),
4311 &sinfo->sta_flags))
4312 goto nla_put_failure;
4313
4314 PUT_SINFO_U64(T_OFFSET, t_offset);
4315 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4316 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4317 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4318
4319 #undef PUT_SINFO
4320 #undef PUT_SINFO_U64
4321
4322 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4323 struct nlattr *tidsattr;
4324 int tid;
4325
4326 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4327 if (!tidsattr)
4328 goto nla_put_failure;
4329
4330 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4331 struct cfg80211_tid_stats *tidstats;
4332 struct nlattr *tidattr;
4333
4334 tidstats = &sinfo->pertid[tid];
4335
4336 if (!tidstats->filled)
4337 continue;
4338
4339 tidattr = nla_nest_start(msg, tid + 1);
4340 if (!tidattr)
4341 goto nla_put_failure;
4342
4343 #define PUT_TIDVAL_U64(attr, memb) do { \
4344 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4345 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4346 tidstats->memb, NL80211_TID_STATS_PAD)) \
4347 goto nla_put_failure; \
4348 } while (0)
4349
4350 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4351 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4352 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4353 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4354
4355 #undef PUT_TIDVAL_U64
4356 nla_nest_end(msg, tidattr);
4357 }
4358
4359 nla_nest_end(msg, tidsattr);
4360 }
4361
4362 nla_nest_end(msg, sinfoattr);
4363
4364 if (sinfo->assoc_req_ies_len &&
4365 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4366 sinfo->assoc_req_ies))
4367 goto nla_put_failure;
4368
4369 genlmsg_end(msg, hdr);
4370 return 0;
4371
4372 nla_put_failure:
4373 genlmsg_cancel(msg, hdr);
4374 return -EMSGSIZE;
4375 }
4376
4377 static int nl80211_dump_station(struct sk_buff *skb,
4378 struct netlink_callback *cb)
4379 {
4380 struct station_info sinfo;
4381 struct cfg80211_registered_device *rdev;
4382 struct wireless_dev *wdev;
4383 u8 mac_addr[ETH_ALEN];
4384 int sta_idx = cb->args[2];
4385 int err;
4386
4387 rtnl_lock();
4388 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4389 if (err)
4390 goto out_err;
4391
4392 if (!wdev->netdev) {
4393 err = -EINVAL;
4394 goto out_err;
4395 }
4396
4397 if (!rdev->ops->dump_station) {
4398 err = -EOPNOTSUPP;
4399 goto out_err;
4400 }
4401
4402 while (1) {
4403 memset(&sinfo, 0, sizeof(sinfo));
4404 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4405 mac_addr, &sinfo);
4406 if (err == -ENOENT)
4407 break;
4408 if (err)
4409 goto out_err;
4410
4411 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4412 NETLINK_CB(cb->skb).portid,
4413 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4414 rdev, wdev->netdev, mac_addr,
4415 &sinfo) < 0)
4416 goto out;
4417
4418 sta_idx++;
4419 }
4420
4421 out:
4422 cb->args[2] = sta_idx;
4423 err = skb->len;
4424 out_err:
4425 rtnl_unlock();
4426
4427 return err;
4428 }
4429
4430 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4431 {
4432 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4433 struct net_device *dev = info->user_ptr[1];
4434 struct station_info sinfo;
4435 struct sk_buff *msg;
4436 u8 *mac_addr = NULL;
4437 int err;
4438
4439 memset(&sinfo, 0, sizeof(sinfo));
4440
4441 if (!info->attrs[NL80211_ATTR_MAC])
4442 return -EINVAL;
4443
4444 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4445
4446 if (!rdev->ops->get_station)
4447 return -EOPNOTSUPP;
4448
4449 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4450 if (err)
4451 return err;
4452
4453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4454 if (!msg)
4455 return -ENOMEM;
4456
4457 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4458 info->snd_portid, info->snd_seq, 0,
4459 rdev, dev, mac_addr, &sinfo) < 0) {
4460 nlmsg_free(msg);
4461 return -ENOBUFS;
4462 }
4463
4464 return genlmsg_reply(msg, info);
4465 }
4466
4467 int cfg80211_check_station_change(struct wiphy *wiphy,
4468 struct station_parameters *params,
4469 enum cfg80211_station_type statype)
4470 {
4471 if (params->listen_interval != -1 &&
4472 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4473 return -EINVAL;
4474
4475 if (params->support_p2p_ps != -1 &&
4476 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4477 return -EINVAL;
4478
4479 if (params->aid &&
4480 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4481 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4482 return -EINVAL;
4483
4484 /* When you run into this, adjust the code below for the new flag */
4485 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4486
4487 switch (statype) {
4488 case CFG80211_STA_MESH_PEER_KERNEL:
4489 case CFG80211_STA_MESH_PEER_USER:
4490 /*
4491 * No ignoring the TDLS flag here -- the userspace mesh
4492 * code doesn't have the bug of including TDLS in the
4493 * mask everywhere.
4494 */
4495 if (params->sta_flags_mask &
4496 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4497 BIT(NL80211_STA_FLAG_MFP) |
4498 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4499 return -EINVAL;
4500 break;
4501 case CFG80211_STA_TDLS_PEER_SETUP:
4502 case CFG80211_STA_TDLS_PEER_ACTIVE:
4503 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4504 return -EINVAL;
4505 /* ignore since it can't change */
4506 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4507 break;
4508 default:
4509 /* disallow mesh-specific things */
4510 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4511 return -EINVAL;
4512 if (params->local_pm)
4513 return -EINVAL;
4514 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4515 return -EINVAL;
4516 }
4517
4518 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4519 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4520 /* TDLS can't be set, ... */
4521 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4522 return -EINVAL;
4523 /*
4524 * ... but don't bother the driver with it. This works around
4525 * a hostapd/wpa_supplicant issue -- it always includes the
4526 * TLDS_PEER flag in the mask even for AP mode.
4527 */
4528 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4529 }
4530
4531 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4532 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4533 /* reject other things that can't change */
4534 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4535 return -EINVAL;
4536 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4537 return -EINVAL;
4538 if (params->supported_rates)
4539 return -EINVAL;
4540 if (params->ext_capab || params->ht_capa || params->vht_capa)
4541 return -EINVAL;
4542 }
4543
4544 if (statype != CFG80211_STA_AP_CLIENT &&
4545 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4546 if (params->vlan)
4547 return -EINVAL;
4548 }
4549
4550 switch (statype) {
4551 case CFG80211_STA_AP_MLME_CLIENT:
4552 /* Use this only for authorizing/unauthorizing a station */
4553 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4554 return -EOPNOTSUPP;
4555 break;
4556 case CFG80211_STA_AP_CLIENT:
4557 case CFG80211_STA_AP_CLIENT_UNASSOC:
4558 /* accept only the listed bits */
4559 if (params->sta_flags_mask &
4560 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4561 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4562 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4563 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4564 BIT(NL80211_STA_FLAG_WME) |
4565 BIT(NL80211_STA_FLAG_MFP)))
4566 return -EINVAL;
4567
4568 /* but authenticated/associated only if driver handles it */
4569 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4570 params->sta_flags_mask &
4571 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4572 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4573 return -EINVAL;
4574 break;
4575 case CFG80211_STA_IBSS:
4576 case CFG80211_STA_AP_STA:
4577 /* reject any changes other than AUTHORIZED */
4578 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4579 return -EINVAL;
4580 break;
4581 case CFG80211_STA_TDLS_PEER_SETUP:
4582 /* reject any changes other than AUTHORIZED or WME */
4583 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4584 BIT(NL80211_STA_FLAG_WME)))
4585 return -EINVAL;
4586 /* force (at least) rates when authorizing */
4587 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4588 !params->supported_rates)
4589 return -EINVAL;
4590 break;
4591 case CFG80211_STA_TDLS_PEER_ACTIVE:
4592 /* reject any changes */
4593 return -EINVAL;
4594 case CFG80211_STA_MESH_PEER_KERNEL:
4595 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4596 return -EINVAL;
4597 break;
4598 case CFG80211_STA_MESH_PEER_USER:
4599 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4600 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4601 return -EINVAL;
4602 break;
4603 }
4604
4605 /*
4606 * Older kernel versions ignored this attribute entirely, so don't
4607 * reject attempts to update it but mark it as unused instead so the
4608 * driver won't look at the data.
4609 */
4610 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4611 statype != CFG80211_STA_TDLS_PEER_SETUP)
4612 params->opmode_notif_used = false;
4613
4614 return 0;
4615 }
4616 EXPORT_SYMBOL(cfg80211_check_station_change);
4617
4618 /*
4619 * Get vlan interface making sure it is running and on the right wiphy.
4620 */
4621 static struct net_device *get_vlan(struct genl_info *info,
4622 struct cfg80211_registered_device *rdev)
4623 {
4624 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4625 struct net_device *v;
4626 int ret;
4627
4628 if (!vlanattr)
4629 return NULL;
4630
4631 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4632 if (!v)
4633 return ERR_PTR(-ENODEV);
4634
4635 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4636 ret = -EINVAL;
4637 goto error;
4638 }
4639
4640 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4641 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4642 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4643 ret = -EINVAL;
4644 goto error;
4645 }
4646
4647 if (!netif_running(v)) {
4648 ret = -ENETDOWN;
4649 goto error;
4650 }
4651
4652 return v;
4653 error:
4654 dev_put(v);
4655 return ERR_PTR(ret);
4656 }
4657
4658 static const struct nla_policy
4659 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4660 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4661 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4662 };
4663
4664 static int nl80211_parse_sta_wme(struct genl_info *info,
4665 struct station_parameters *params)
4666 {
4667 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4668 struct nlattr *nla;
4669 int err;
4670
4671 /* parse WME attributes if present */
4672 if (!info->attrs[NL80211_ATTR_STA_WME])
4673 return 0;
4674
4675 nla = info->attrs[NL80211_ATTR_STA_WME];
4676 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4677 nl80211_sta_wme_policy);
4678 if (err)
4679 return err;
4680
4681 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4682 params->uapsd_queues = nla_get_u8(
4683 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4684 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4685 return -EINVAL;
4686
4687 if (tb[NL80211_STA_WME_MAX_SP])
4688 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4689
4690 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4691 return -EINVAL;
4692
4693 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4694
4695 return 0;
4696 }
4697
4698 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4699 struct station_parameters *params)
4700 {
4701 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4702 params->supported_channels =
4703 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4704 params->supported_channels_len =
4705 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4706 /*
4707 * Need to include at least one (first channel, number of
4708 * channels) tuple for each subband, and must have proper
4709 * tuples for the rest of the data as well.
4710 */
4711 if (params->supported_channels_len < 2)
4712 return -EINVAL;
4713 if (params->supported_channels_len % 2)
4714 return -EINVAL;
4715 }
4716
4717 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4718 params->supported_oper_classes =
4719 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4720 params->supported_oper_classes_len =
4721 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4722 /*
4723 * The value of the Length field of the Supported Operating
4724 * Classes element is between 2 and 253.
4725 */
4726 if (params->supported_oper_classes_len < 2 ||
4727 params->supported_oper_classes_len > 253)
4728 return -EINVAL;
4729 }
4730 return 0;
4731 }
4732
4733 static int nl80211_set_station_tdls(struct genl_info *info,
4734 struct station_parameters *params)
4735 {
4736 int err;
4737 /* Dummy STA entry gets updated once the peer capabilities are known */
4738 if (info->attrs[NL80211_ATTR_PEER_AID])
4739 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4740 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4741 params->ht_capa =
4742 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4743 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4744 params->vht_capa =
4745 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4746
4747 err = nl80211_parse_sta_channel_info(info, params);
4748 if (err)
4749 return err;
4750
4751 return nl80211_parse_sta_wme(info, params);
4752 }
4753
4754 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4755 {
4756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4757 struct net_device *dev = info->user_ptr[1];
4758 struct station_parameters params;
4759 u8 *mac_addr;
4760 int err;
4761
4762 memset(&params, 0, sizeof(params));
4763
4764 if (!rdev->ops->change_station)
4765 return -EOPNOTSUPP;
4766
4767 /*
4768 * AID and listen_interval properties can be set only for unassociated
4769 * station. Include these parameters here and will check them in
4770 * cfg80211_check_station_change().
4771 */
4772 if (info->attrs[NL80211_ATTR_STA_AID])
4773 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4774
4775 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4776 params.listen_interval =
4777 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4778 else
4779 params.listen_interval = -1;
4780
4781 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4782 u8 tmp;
4783
4784 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4785 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4786 return -EINVAL;
4787
4788 params.support_p2p_ps = tmp;
4789 } else {
4790 params.support_p2p_ps = -1;
4791 }
4792
4793 if (!info->attrs[NL80211_ATTR_MAC])
4794 return -EINVAL;
4795
4796 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4797
4798 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4799 params.supported_rates =
4800 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4801 params.supported_rates_len =
4802 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4803 }
4804
4805 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4806 params.capability =
4807 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4808 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4809 }
4810
4811 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4812 params.ext_capab =
4813 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4814 params.ext_capab_len =
4815 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4816 }
4817
4818 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4819 return -EINVAL;
4820
4821 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4822 params.plink_action =
4823 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4824 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4825 return -EINVAL;
4826 }
4827
4828 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4829 params.plink_state =
4830 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4831 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4832 return -EINVAL;
4833 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4834 params.peer_aid = nla_get_u16(
4835 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4836 if (params.peer_aid > IEEE80211_MAX_AID)
4837 return -EINVAL;
4838 }
4839 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4840 }
4841
4842 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4843 enum nl80211_mesh_power_mode pm = nla_get_u32(
4844 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4845
4846 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4847 pm > NL80211_MESH_POWER_MAX)
4848 return -EINVAL;
4849
4850 params.local_pm = pm;
4851 }
4852
4853 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4854 params.opmode_notif_used = true;
4855 params.opmode_notif =
4856 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4857 }
4858
4859 /* Include parameters for TDLS peer (will check later) */
4860 err = nl80211_set_station_tdls(info, &params);
4861 if (err)
4862 return err;
4863
4864 params.vlan = get_vlan(info, rdev);
4865 if (IS_ERR(params.vlan))
4866 return PTR_ERR(params.vlan);
4867
4868 switch (dev->ieee80211_ptr->iftype) {
4869 case NL80211_IFTYPE_AP:
4870 case NL80211_IFTYPE_AP_VLAN:
4871 case NL80211_IFTYPE_P2P_GO:
4872 case NL80211_IFTYPE_P2P_CLIENT:
4873 case NL80211_IFTYPE_STATION:
4874 case NL80211_IFTYPE_ADHOC:
4875 case NL80211_IFTYPE_MESH_POINT:
4876 break;
4877 default:
4878 err = -EOPNOTSUPP;
4879 goto out_put_vlan;
4880 }
4881
4882 /* driver will call cfg80211_check_station_change() */
4883 err = rdev_change_station(rdev, dev, mac_addr, &params);
4884
4885 out_put_vlan:
4886 if (params.vlan)
4887 dev_put(params.vlan);
4888
4889 return err;
4890 }
4891
4892 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4893 {
4894 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4895 int err;
4896 struct net_device *dev = info->user_ptr[1];
4897 struct station_parameters params;
4898 u8 *mac_addr = NULL;
4899 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4900 BIT(NL80211_STA_FLAG_ASSOCIATED);
4901
4902 memset(&params, 0, sizeof(params));
4903
4904 if (!rdev->ops->add_station)
4905 return -EOPNOTSUPP;
4906
4907 if (!info->attrs[NL80211_ATTR_MAC])
4908 return -EINVAL;
4909
4910 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4911 return -EINVAL;
4912
4913 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4914 return -EINVAL;
4915
4916 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4917 !info->attrs[NL80211_ATTR_PEER_AID])
4918 return -EINVAL;
4919
4920 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4921 params.supported_rates =
4922 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4923 params.supported_rates_len =
4924 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4925 params.listen_interval =
4926 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4927
4928 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4929 u8 tmp;
4930
4931 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4932 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4933 return -EINVAL;
4934
4935 params.support_p2p_ps = tmp;
4936 } else {
4937 /*
4938 * if not specified, assume it's supported for P2P GO interface,
4939 * and is NOT supported for AP interface
4940 */
4941 params.support_p2p_ps =
4942 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4943 }
4944
4945 if (info->attrs[NL80211_ATTR_PEER_AID])
4946 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4947 else
4948 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4949 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4950 return -EINVAL;
4951
4952 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4953 params.capability =
4954 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4955 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4956 }
4957
4958 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4959 params.ext_capab =
4960 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4961 params.ext_capab_len =
4962 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4963 }
4964
4965 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4966 params.ht_capa =
4967 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4968
4969 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4970 params.vht_capa =
4971 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4972
4973 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4974 params.opmode_notif_used = true;
4975 params.opmode_notif =
4976 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4977 }
4978
4979 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4980 params.plink_action =
4981 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4982 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4983 return -EINVAL;
4984 }
4985
4986 err = nl80211_parse_sta_channel_info(info, &params);
4987 if (err)
4988 return err;
4989
4990 err = nl80211_parse_sta_wme(info, &params);
4991 if (err)
4992 return err;
4993
4994 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4995 return -EINVAL;
4996
4997 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4998 * as userspace might just pass through the capabilities from the IEs
4999 * directly, rather than enforcing this restriction and returning an
5000 * error in this case.
5001 */
5002 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5003 params.ht_capa = NULL;
5004 params.vht_capa = NULL;
5005 }
5006
5007 /* When you run into this, adjust the code below for the new flag */
5008 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5009
5010 switch (dev->ieee80211_ptr->iftype) {
5011 case NL80211_IFTYPE_AP:
5012 case NL80211_IFTYPE_AP_VLAN:
5013 case NL80211_IFTYPE_P2P_GO:
5014 /* ignore WME attributes if iface/sta is not capable */
5015 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5016 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5017 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5018
5019 /* TDLS peers cannot be added */
5020 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5021 info->attrs[NL80211_ATTR_PEER_AID])
5022 return -EINVAL;
5023 /* but don't bother the driver with it */
5024 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5025
5026 /* allow authenticated/associated only if driver handles it */
5027 if (!(rdev->wiphy.features &
5028 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5029 params.sta_flags_mask & auth_assoc)
5030 return -EINVAL;
5031
5032 /* Older userspace, or userspace wanting to be compatible with
5033 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5034 * and assoc flags in the mask, but assumes the station will be
5035 * added as associated anyway since this was the required driver
5036 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5037 * introduced.
5038 * In order to not bother drivers with this quirk in the API
5039 * set the flags in both the mask and set for new stations in
5040 * this case.
5041 */
5042 if (!(params.sta_flags_mask & auth_assoc)) {
5043 params.sta_flags_mask |= auth_assoc;
5044 params.sta_flags_set |= auth_assoc;
5045 }
5046
5047 /* must be last in here for error handling */
5048 params.vlan = get_vlan(info, rdev);
5049 if (IS_ERR(params.vlan))
5050 return PTR_ERR(params.vlan);
5051 break;
5052 case NL80211_IFTYPE_MESH_POINT:
5053 /* ignore uAPSD data */
5054 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5055
5056 /* associated is disallowed */
5057 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5058 return -EINVAL;
5059 /* TDLS peers cannot be added */
5060 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5061 info->attrs[NL80211_ATTR_PEER_AID])
5062 return -EINVAL;
5063 break;
5064 case NL80211_IFTYPE_STATION:
5065 case NL80211_IFTYPE_P2P_CLIENT:
5066 /* ignore uAPSD data */
5067 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5068
5069 /* these are disallowed */
5070 if (params.sta_flags_mask &
5071 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5072 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5073 return -EINVAL;
5074 /* Only TDLS peers can be added */
5075 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5076 return -EINVAL;
5077 /* Can only add if TDLS ... */
5078 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5079 return -EOPNOTSUPP;
5080 /* ... with external setup is supported */
5081 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5082 return -EOPNOTSUPP;
5083 /*
5084 * Older wpa_supplicant versions always mark the TDLS peer
5085 * as authorized, but it shouldn't yet be.
5086 */
5087 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5088 break;
5089 default:
5090 return -EOPNOTSUPP;
5091 }
5092
5093 /* be aware of params.vlan when changing code here */
5094
5095 err = rdev_add_station(rdev, dev, mac_addr, &params);
5096
5097 if (params.vlan)
5098 dev_put(params.vlan);
5099 return err;
5100 }
5101
5102 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5103 {
5104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5105 struct net_device *dev = info->user_ptr[1];
5106 struct station_del_parameters params;
5107
5108 memset(&params, 0, sizeof(params));
5109
5110 if (info->attrs[NL80211_ATTR_MAC])
5111 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5112
5113 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5114 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5115 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5116 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5117 return -EINVAL;
5118
5119 if (!rdev->ops->del_station)
5120 return -EOPNOTSUPP;
5121
5122 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5123 params.subtype =
5124 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5125 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5126 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5127 return -EINVAL;
5128 } else {
5129 /* Default to Deauthentication frame */
5130 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5131 }
5132
5133 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5134 params.reason_code =
5135 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5136 if (params.reason_code == 0)
5137 return -EINVAL; /* 0 is reserved */
5138 } else {
5139 /* Default to reason code 2 */
5140 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5141 }
5142
5143 return rdev_del_station(rdev, dev, &params);
5144 }
5145
5146 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5147 int flags, struct net_device *dev,
5148 u8 *dst, u8 *next_hop,
5149 struct mpath_info *pinfo)
5150 {
5151 void *hdr;
5152 struct nlattr *pinfoattr;
5153
5154 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5155 if (!hdr)
5156 return -1;
5157
5158 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5159 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5160 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5161 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5162 goto nla_put_failure;
5163
5164 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5165 if (!pinfoattr)
5166 goto nla_put_failure;
5167 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5168 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5169 pinfo->frame_qlen))
5170 goto nla_put_failure;
5171 if (((pinfo->filled & MPATH_INFO_SN) &&
5172 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5173 ((pinfo->filled & MPATH_INFO_METRIC) &&
5174 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5175 pinfo->metric)) ||
5176 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5177 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5178 pinfo->exptime)) ||
5179 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5180 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5181 pinfo->flags)) ||
5182 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5183 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5184 pinfo->discovery_timeout)) ||
5185 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5186 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5187 pinfo->discovery_retries)))
5188 goto nla_put_failure;
5189
5190 nla_nest_end(msg, pinfoattr);
5191
5192 genlmsg_end(msg, hdr);
5193 return 0;
5194
5195 nla_put_failure:
5196 genlmsg_cancel(msg, hdr);
5197 return -EMSGSIZE;
5198 }
5199
5200 static int nl80211_dump_mpath(struct sk_buff *skb,
5201 struct netlink_callback *cb)
5202 {
5203 struct mpath_info pinfo;
5204 struct cfg80211_registered_device *rdev;
5205 struct wireless_dev *wdev;
5206 u8 dst[ETH_ALEN];
5207 u8 next_hop[ETH_ALEN];
5208 int path_idx = cb->args[2];
5209 int err;
5210
5211 rtnl_lock();
5212 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5213 if (err)
5214 goto out_err;
5215
5216 if (!rdev->ops->dump_mpath) {
5217 err = -EOPNOTSUPP;
5218 goto out_err;
5219 }
5220
5221 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5222 err = -EOPNOTSUPP;
5223 goto out_err;
5224 }
5225
5226 while (1) {
5227 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5228 next_hop, &pinfo);
5229 if (err == -ENOENT)
5230 break;
5231 if (err)
5232 goto out_err;
5233
5234 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5235 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5236 wdev->netdev, dst, next_hop,
5237 &pinfo) < 0)
5238 goto out;
5239
5240 path_idx++;
5241 }
5242
5243 out:
5244 cb->args[2] = path_idx;
5245 err = skb->len;
5246 out_err:
5247 rtnl_unlock();
5248 return err;
5249 }
5250
5251 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5252 {
5253 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5254 int err;
5255 struct net_device *dev = info->user_ptr[1];
5256 struct mpath_info pinfo;
5257 struct sk_buff *msg;
5258 u8 *dst = NULL;
5259 u8 next_hop[ETH_ALEN];
5260
5261 memset(&pinfo, 0, sizeof(pinfo));
5262
5263 if (!info->attrs[NL80211_ATTR_MAC])
5264 return -EINVAL;
5265
5266 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5267
5268 if (!rdev->ops->get_mpath)
5269 return -EOPNOTSUPP;
5270
5271 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5272 return -EOPNOTSUPP;
5273
5274 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5275 if (err)
5276 return err;
5277
5278 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5279 if (!msg)
5280 return -ENOMEM;
5281
5282 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5283 dev, dst, next_hop, &pinfo) < 0) {
5284 nlmsg_free(msg);
5285 return -ENOBUFS;
5286 }
5287
5288 return genlmsg_reply(msg, info);
5289 }
5290
5291 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5292 {
5293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5294 struct net_device *dev = info->user_ptr[1];
5295 u8 *dst = NULL;
5296 u8 *next_hop = NULL;
5297
5298 if (!info->attrs[NL80211_ATTR_MAC])
5299 return -EINVAL;
5300
5301 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5302 return -EINVAL;
5303
5304 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5305 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5306
5307 if (!rdev->ops->change_mpath)
5308 return -EOPNOTSUPP;
5309
5310 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5311 return -EOPNOTSUPP;
5312
5313 return rdev_change_mpath(rdev, dev, dst, next_hop);
5314 }
5315
5316 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5317 {
5318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5319 struct net_device *dev = info->user_ptr[1];
5320 u8 *dst = NULL;
5321 u8 *next_hop = NULL;
5322
5323 if (!info->attrs[NL80211_ATTR_MAC])
5324 return -EINVAL;
5325
5326 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5327 return -EINVAL;
5328
5329 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5330 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5331
5332 if (!rdev->ops->add_mpath)
5333 return -EOPNOTSUPP;
5334
5335 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5336 return -EOPNOTSUPP;
5337
5338 return rdev_add_mpath(rdev, dev, dst, next_hop);
5339 }
5340
5341 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5342 {
5343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5344 struct net_device *dev = info->user_ptr[1];
5345 u8 *dst = NULL;
5346
5347 if (info->attrs[NL80211_ATTR_MAC])
5348 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5349
5350 if (!rdev->ops->del_mpath)
5351 return -EOPNOTSUPP;
5352
5353 return rdev_del_mpath(rdev, dev, dst);
5354 }
5355
5356 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5357 {
5358 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5359 int err;
5360 struct net_device *dev = info->user_ptr[1];
5361 struct mpath_info pinfo;
5362 struct sk_buff *msg;
5363 u8 *dst = NULL;
5364 u8 mpp[ETH_ALEN];
5365
5366 memset(&pinfo, 0, sizeof(pinfo));
5367
5368 if (!info->attrs[NL80211_ATTR_MAC])
5369 return -EINVAL;
5370
5371 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5372
5373 if (!rdev->ops->get_mpp)
5374 return -EOPNOTSUPP;
5375
5376 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5377 return -EOPNOTSUPP;
5378
5379 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5380 if (err)
5381 return err;
5382
5383 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5384 if (!msg)
5385 return -ENOMEM;
5386
5387 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5388 dev, dst, mpp, &pinfo) < 0) {
5389 nlmsg_free(msg);
5390 return -ENOBUFS;
5391 }
5392
5393 return genlmsg_reply(msg, info);
5394 }
5395
5396 static int nl80211_dump_mpp(struct sk_buff *skb,
5397 struct netlink_callback *cb)
5398 {
5399 struct mpath_info pinfo;
5400 struct cfg80211_registered_device *rdev;
5401 struct wireless_dev *wdev;
5402 u8 dst[ETH_ALEN];
5403 u8 mpp[ETH_ALEN];
5404 int path_idx = cb->args[2];
5405 int err;
5406
5407 rtnl_lock();
5408 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5409 if (err)
5410 goto out_err;
5411
5412 if (!rdev->ops->dump_mpp) {
5413 err = -EOPNOTSUPP;
5414 goto out_err;
5415 }
5416
5417 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5418 err = -EOPNOTSUPP;
5419 goto out_err;
5420 }
5421
5422 while (1) {
5423 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5424 mpp, &pinfo);
5425 if (err == -ENOENT)
5426 break;
5427 if (err)
5428 goto out_err;
5429
5430 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5431 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5432 wdev->netdev, dst, mpp,
5433 &pinfo) < 0)
5434 goto out;
5435
5436 path_idx++;
5437 }
5438
5439 out:
5440 cb->args[2] = path_idx;
5441 err = skb->len;
5442 out_err:
5443 rtnl_unlock();
5444 return err;
5445 }
5446
5447 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5448 {
5449 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5450 struct net_device *dev = info->user_ptr[1];
5451 struct wireless_dev *wdev = dev->ieee80211_ptr;
5452 struct bss_parameters params;
5453 int err;
5454
5455 memset(&params, 0, sizeof(params));
5456 /* default to not changing parameters */
5457 params.use_cts_prot = -1;
5458 params.use_short_preamble = -1;
5459 params.use_short_slot_time = -1;
5460 params.ap_isolate = -1;
5461 params.ht_opmode = -1;
5462 params.p2p_ctwindow = -1;
5463 params.p2p_opp_ps = -1;
5464
5465 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5466 params.use_cts_prot =
5467 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5468 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5469 params.use_short_preamble =
5470 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5471 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5472 params.use_short_slot_time =
5473 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5474 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5475 params.basic_rates =
5476 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5477 params.basic_rates_len =
5478 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5479 }
5480 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5481 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5482 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5483 params.ht_opmode =
5484 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5485
5486 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5487 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5488 return -EINVAL;
5489 params.p2p_ctwindow =
5490 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5491 if (params.p2p_ctwindow < 0)
5492 return -EINVAL;
5493 if (params.p2p_ctwindow != 0 &&
5494 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5495 return -EINVAL;
5496 }
5497
5498 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5499 u8 tmp;
5500
5501 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5502 return -EINVAL;
5503 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5504 if (tmp > 1)
5505 return -EINVAL;
5506 params.p2p_opp_ps = tmp;
5507 if (params.p2p_opp_ps &&
5508 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5509 return -EINVAL;
5510 }
5511
5512 if (!rdev->ops->change_bss)
5513 return -EOPNOTSUPP;
5514
5515 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5516 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5517 return -EOPNOTSUPP;
5518
5519 wdev_lock(wdev);
5520 err = rdev_change_bss(rdev, dev, &params);
5521 wdev_unlock(wdev);
5522
5523 return err;
5524 }
5525
5526 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5527 {
5528 char *data = NULL;
5529 bool is_indoor;
5530 enum nl80211_user_reg_hint_type user_reg_hint_type;
5531 u32 owner_nlportid;
5532
5533 /*
5534 * You should only get this when cfg80211 hasn't yet initialized
5535 * completely when built-in to the kernel right between the time
5536 * window between nl80211_init() and regulatory_init(), if that is
5537 * even possible.
5538 */
5539 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5540 return -EINPROGRESS;
5541
5542 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5543 user_reg_hint_type =
5544 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5545 else
5546 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5547
5548 switch (user_reg_hint_type) {
5549 case NL80211_USER_REG_HINT_USER:
5550 case NL80211_USER_REG_HINT_CELL_BASE:
5551 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5552 return -EINVAL;
5553
5554 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5555 return regulatory_hint_user(data, user_reg_hint_type);
5556 case NL80211_USER_REG_HINT_INDOOR:
5557 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5558 owner_nlportid = info->snd_portid;
5559 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5560 } else {
5561 owner_nlportid = 0;
5562 is_indoor = true;
5563 }
5564
5565 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5566 default:
5567 return -EINVAL;
5568 }
5569 }
5570
5571 static int nl80211_get_mesh_config(struct sk_buff *skb,
5572 struct genl_info *info)
5573 {
5574 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5575 struct net_device *dev = info->user_ptr[1];
5576 struct wireless_dev *wdev = dev->ieee80211_ptr;
5577 struct mesh_config cur_params;
5578 int err = 0;
5579 void *hdr;
5580 struct nlattr *pinfoattr;
5581 struct sk_buff *msg;
5582
5583 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5584 return -EOPNOTSUPP;
5585
5586 if (!rdev->ops->get_mesh_config)
5587 return -EOPNOTSUPP;
5588
5589 wdev_lock(wdev);
5590 /* If not connected, get default parameters */
5591 if (!wdev->mesh_id_len)
5592 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5593 else
5594 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5595 wdev_unlock(wdev);
5596
5597 if (err)
5598 return err;
5599
5600 /* Draw up a netlink message to send back */
5601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5602 if (!msg)
5603 return -ENOMEM;
5604 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5605 NL80211_CMD_GET_MESH_CONFIG);
5606 if (!hdr)
5607 goto out;
5608 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5609 if (!pinfoattr)
5610 goto nla_put_failure;
5611 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5612 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5613 cur_params.dot11MeshRetryTimeout) ||
5614 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5615 cur_params.dot11MeshConfirmTimeout) ||
5616 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5617 cur_params.dot11MeshHoldingTimeout) ||
5618 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5619 cur_params.dot11MeshMaxPeerLinks) ||
5620 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5621 cur_params.dot11MeshMaxRetries) ||
5622 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5623 cur_params.dot11MeshTTL) ||
5624 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5625 cur_params.element_ttl) ||
5626 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5627 cur_params.auto_open_plinks) ||
5628 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5629 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5630 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5631 cur_params.dot11MeshHWMPmaxPREQretries) ||
5632 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5633 cur_params.path_refresh_time) ||
5634 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5635 cur_params.min_discovery_timeout) ||
5636 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5637 cur_params.dot11MeshHWMPactivePathTimeout) ||
5638 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5639 cur_params.dot11MeshHWMPpreqMinInterval) ||
5640 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5641 cur_params.dot11MeshHWMPperrMinInterval) ||
5642 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5643 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5644 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5645 cur_params.dot11MeshHWMPRootMode) ||
5646 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5647 cur_params.dot11MeshHWMPRannInterval) ||
5648 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5649 cur_params.dot11MeshGateAnnouncementProtocol) ||
5650 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5651 cur_params.dot11MeshForwarding) ||
5652 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5653 cur_params.rssi_threshold) ||
5654 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5655 cur_params.ht_opmode) ||
5656 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5657 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5658 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5659 cur_params.dot11MeshHWMProotInterval) ||
5660 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5661 cur_params.dot11MeshHWMPconfirmationInterval) ||
5662 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5663 cur_params.power_mode) ||
5664 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5665 cur_params.dot11MeshAwakeWindowDuration) ||
5666 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5667 cur_params.plink_timeout))
5668 goto nla_put_failure;
5669 nla_nest_end(msg, pinfoattr);
5670 genlmsg_end(msg, hdr);
5671 return genlmsg_reply(msg, info);
5672
5673 nla_put_failure:
5674 genlmsg_cancel(msg, hdr);
5675 out:
5676 nlmsg_free(msg);
5677 return -ENOBUFS;
5678 }
5679
5680 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5681 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5682 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5683 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5684 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5685 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5686 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5687 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5688 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5689 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5690 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5691 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5692 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5693 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5694 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5695 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5696 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5697 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5698 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5699 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5700 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5701 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5702 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5703 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5704 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5705 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5706 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5707 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5708 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5709 };
5710
5711 static const struct nla_policy
5712 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5713 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5714 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5715 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5716 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5717 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5718 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5719 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5720 .len = IEEE80211_MAX_DATA_LEN },
5721 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5722 };
5723
5724 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5725 {
5726 u8 val = nla_get_u8(nla);
5727 if (val < min || val > max)
5728 return -EINVAL;
5729 *out = val;
5730 return 0;
5731 }
5732
5733 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5734 {
5735 u8 val = nla_get_u8(nla);
5736 if (val < min || val > max)
5737 return -EINVAL;
5738 *out = val;
5739 return 0;
5740 }
5741
5742 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5743 {
5744 u16 val = nla_get_u16(nla);
5745 if (val < min || val > max)
5746 return -EINVAL;
5747 *out = val;
5748 return 0;
5749 }
5750
5751 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5752 {
5753 u32 val = nla_get_u32(nla);
5754 if (val < min || val > max)
5755 return -EINVAL;
5756 *out = val;
5757 return 0;
5758 }
5759
5760 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5761 {
5762 s32 val = nla_get_s32(nla);
5763 if (val < min || val > max)
5764 return -EINVAL;
5765 *out = val;
5766 return 0;
5767 }
5768
5769 static int nl80211_check_power_mode(const struct nlattr *nla,
5770 enum nl80211_mesh_power_mode min,
5771 enum nl80211_mesh_power_mode max,
5772 enum nl80211_mesh_power_mode *out)
5773 {
5774 u32 val = nla_get_u32(nla);
5775 if (val < min || val > max)
5776 return -EINVAL;
5777 *out = val;
5778 return 0;
5779 }
5780
5781 static int nl80211_parse_mesh_config(struct genl_info *info,
5782 struct mesh_config *cfg,
5783 u32 *mask_out)
5784 {
5785 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5786 u32 mask = 0;
5787 u16 ht_opmode;
5788
5789 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5790 do { \
5791 if (tb[attr]) { \
5792 if (fn(tb[attr], min, max, &cfg->param)) \
5793 return -EINVAL; \
5794 mask |= (1 << (attr - 1)); \
5795 } \
5796 } while (0)
5797
5798 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5799 return -EINVAL;
5800 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5801 info->attrs[NL80211_ATTR_MESH_CONFIG],
5802 nl80211_meshconf_params_policy))
5803 return -EINVAL;
5804
5805 /* This makes sure that there aren't more than 32 mesh config
5806 * parameters (otherwise our bitfield scheme would not work.) */
5807 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5808
5809 /* Fill in the params struct */
5810 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5811 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5812 nl80211_check_u16);
5813 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5814 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5815 nl80211_check_u16);
5816 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5817 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5818 nl80211_check_u16);
5819 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5820 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5821 nl80211_check_u16);
5822 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5823 mask, NL80211_MESHCONF_MAX_RETRIES,
5824 nl80211_check_u8);
5825 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5826 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5827 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5828 mask, NL80211_MESHCONF_ELEMENT_TTL,
5829 nl80211_check_u8);
5830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5831 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5832 nl80211_check_bool);
5833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5834 1, 255, mask,
5835 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5836 nl80211_check_u32);
5837 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5838 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5839 nl80211_check_u8);
5840 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5841 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5842 nl80211_check_u32);
5843 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5844 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5845 nl80211_check_u16);
5846 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5847 1, 65535, mask,
5848 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5849 nl80211_check_u32);
5850 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5851 1, 65535, mask,
5852 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5853 nl80211_check_u16);
5854 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5855 1, 65535, mask,
5856 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5857 nl80211_check_u16);
5858 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5859 dot11MeshHWMPnetDiameterTraversalTime,
5860 1, 65535, mask,
5861 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5862 nl80211_check_u16);
5863 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5864 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5865 nl80211_check_u8);
5866 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5867 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5868 nl80211_check_u16);
5869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5870 dot11MeshGateAnnouncementProtocol, 0, 1,
5871 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5872 nl80211_check_bool);
5873 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5874 mask, NL80211_MESHCONF_FORWARDING,
5875 nl80211_check_bool);
5876 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5877 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5878 nl80211_check_s32);
5879 /*
5880 * Check HT operation mode based on
5881 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5882 */
5883 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5884 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5885
5886 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5887 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5888 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5889 return -EINVAL;
5890
5891 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5892 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5893 return -EINVAL;
5894
5895 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5896 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5897 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5898 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5899 return -EINVAL;
5900 break;
5901 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5902 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5903 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5904 return -EINVAL;
5905 break;
5906 }
5907 cfg->ht_opmode = ht_opmode;
5908 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
5909 }
5910 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5911 1, 65535, mask,
5912 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5913 nl80211_check_u32);
5914 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5915 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5916 nl80211_check_u16);
5917 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5918 dot11MeshHWMPconfirmationInterval,
5919 1, 65535, mask,
5920 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5921 nl80211_check_u16);
5922 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5923 NL80211_MESH_POWER_ACTIVE,
5924 NL80211_MESH_POWER_MAX,
5925 mask, NL80211_MESHCONF_POWER_MODE,
5926 nl80211_check_power_mode);
5927 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5928 0, 65535, mask,
5929 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5930 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5931 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5932 nl80211_check_u32);
5933 if (mask_out)
5934 *mask_out = mask;
5935
5936 return 0;
5937
5938 #undef FILL_IN_MESH_PARAM_IF_SET
5939 }
5940
5941 static int nl80211_parse_mesh_setup(struct genl_info *info,
5942 struct mesh_setup *setup)
5943 {
5944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5945 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5946
5947 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5948 return -EINVAL;
5949 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5950 info->attrs[NL80211_ATTR_MESH_SETUP],
5951 nl80211_mesh_setup_params_policy))
5952 return -EINVAL;
5953
5954 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5955 setup->sync_method =
5956 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5957 IEEE80211_SYNC_METHOD_VENDOR :
5958 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5959
5960 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5961 setup->path_sel_proto =
5962 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5963 IEEE80211_PATH_PROTOCOL_VENDOR :
5964 IEEE80211_PATH_PROTOCOL_HWMP;
5965
5966 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5967 setup->path_metric =
5968 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5969 IEEE80211_PATH_METRIC_VENDOR :
5970 IEEE80211_PATH_METRIC_AIRTIME;
5971
5972 if (tb[NL80211_MESH_SETUP_IE]) {
5973 struct nlattr *ieattr =
5974 tb[NL80211_MESH_SETUP_IE];
5975 if (!is_valid_ie_attr(ieattr))
5976 return -EINVAL;
5977 setup->ie = nla_data(ieattr);
5978 setup->ie_len = nla_len(ieattr);
5979 }
5980 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5981 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5982 return -EINVAL;
5983 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5984 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5985 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5986 if (setup->is_secure)
5987 setup->user_mpm = true;
5988
5989 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5990 if (!setup->user_mpm)
5991 return -EINVAL;
5992 setup->auth_id =
5993 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5994 }
5995
5996 return 0;
5997 }
5998
5999 static int nl80211_update_mesh_config(struct sk_buff *skb,
6000 struct genl_info *info)
6001 {
6002 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6003 struct net_device *dev = info->user_ptr[1];
6004 struct wireless_dev *wdev = dev->ieee80211_ptr;
6005 struct mesh_config cfg;
6006 u32 mask;
6007 int err;
6008
6009 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6010 return -EOPNOTSUPP;
6011
6012 if (!rdev->ops->update_mesh_config)
6013 return -EOPNOTSUPP;
6014
6015 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6016 if (err)
6017 return err;
6018
6019 wdev_lock(wdev);
6020 if (!wdev->mesh_id_len)
6021 err = -ENOLINK;
6022
6023 if (!err)
6024 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6025
6026 wdev_unlock(wdev);
6027
6028 return err;
6029 }
6030
6031 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6032 struct sk_buff *msg)
6033 {
6034 struct nlattr *nl_reg_rules;
6035 unsigned int i;
6036
6037 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6038 (regdom->dfs_region &&
6039 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6040 goto nla_put_failure;
6041
6042 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6043 if (!nl_reg_rules)
6044 goto nla_put_failure;
6045
6046 for (i = 0; i < regdom->n_reg_rules; i++) {
6047 struct nlattr *nl_reg_rule;
6048 const struct ieee80211_reg_rule *reg_rule;
6049 const struct ieee80211_freq_range *freq_range;
6050 const struct ieee80211_power_rule *power_rule;
6051 unsigned int max_bandwidth_khz;
6052
6053 reg_rule = &regdom->reg_rules[i];
6054 freq_range = &reg_rule->freq_range;
6055 power_rule = &reg_rule->power_rule;
6056
6057 nl_reg_rule = nla_nest_start(msg, i);
6058 if (!nl_reg_rule)
6059 goto nla_put_failure;
6060
6061 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6062 if (!max_bandwidth_khz)
6063 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6064 reg_rule);
6065
6066 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6067 reg_rule->flags) ||
6068 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6069 freq_range->start_freq_khz) ||
6070 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6071 freq_range->end_freq_khz) ||
6072 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6073 max_bandwidth_khz) ||
6074 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6075 power_rule->max_antenna_gain) ||
6076 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6077 power_rule->max_eirp) ||
6078 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6079 reg_rule->dfs_cac_ms))
6080 goto nla_put_failure;
6081
6082 nla_nest_end(msg, nl_reg_rule);
6083 }
6084
6085 nla_nest_end(msg, nl_reg_rules);
6086 return 0;
6087
6088 nla_put_failure:
6089 return -EMSGSIZE;
6090 }
6091
6092 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6093 {
6094 const struct ieee80211_regdomain *regdom = NULL;
6095 struct cfg80211_registered_device *rdev;
6096 struct wiphy *wiphy = NULL;
6097 struct sk_buff *msg;
6098 void *hdr;
6099
6100 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6101 if (!msg)
6102 return -ENOBUFS;
6103
6104 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6105 NL80211_CMD_GET_REG);
6106 if (!hdr)
6107 goto put_failure;
6108
6109 if (info->attrs[NL80211_ATTR_WIPHY]) {
6110 bool self_managed;
6111
6112 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6113 if (IS_ERR(rdev)) {
6114 nlmsg_free(msg);
6115 return PTR_ERR(rdev);
6116 }
6117
6118 wiphy = &rdev->wiphy;
6119 self_managed = wiphy->regulatory_flags &
6120 REGULATORY_WIPHY_SELF_MANAGED;
6121 regdom = get_wiphy_regdom(wiphy);
6122
6123 /* a self-managed-reg device must have a private regdom */
6124 if (WARN_ON(!regdom && self_managed)) {
6125 nlmsg_free(msg);
6126 return -EINVAL;
6127 }
6128
6129 if (regdom &&
6130 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6131 goto nla_put_failure;
6132 }
6133
6134 if (!wiphy && reg_last_request_cell_base() &&
6135 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6136 NL80211_USER_REG_HINT_CELL_BASE))
6137 goto nla_put_failure;
6138
6139 rcu_read_lock();
6140
6141 if (!regdom)
6142 regdom = rcu_dereference(cfg80211_regdomain);
6143
6144 if (nl80211_put_regdom(regdom, msg))
6145 goto nla_put_failure_rcu;
6146
6147 rcu_read_unlock();
6148
6149 genlmsg_end(msg, hdr);
6150 return genlmsg_reply(msg, info);
6151
6152 nla_put_failure_rcu:
6153 rcu_read_unlock();
6154 nla_put_failure:
6155 genlmsg_cancel(msg, hdr);
6156 put_failure:
6157 nlmsg_free(msg);
6158 return -EMSGSIZE;
6159 }
6160
6161 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6162 u32 seq, int flags, struct wiphy *wiphy,
6163 const struct ieee80211_regdomain *regdom)
6164 {
6165 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6166 NL80211_CMD_GET_REG);
6167
6168 if (!hdr)
6169 return -1;
6170
6171 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6172
6173 if (nl80211_put_regdom(regdom, msg))
6174 goto nla_put_failure;
6175
6176 if (!wiphy && reg_last_request_cell_base() &&
6177 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6178 NL80211_USER_REG_HINT_CELL_BASE))
6179 goto nla_put_failure;
6180
6181 if (wiphy &&
6182 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6183 goto nla_put_failure;
6184
6185 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6186 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6187 goto nla_put_failure;
6188
6189 genlmsg_end(msg, hdr);
6190 return 0;
6191
6192 nla_put_failure:
6193 genlmsg_cancel(msg, hdr);
6194 return -EMSGSIZE;
6195 }
6196
6197 static int nl80211_get_reg_dump(struct sk_buff *skb,
6198 struct netlink_callback *cb)
6199 {
6200 const struct ieee80211_regdomain *regdom = NULL;
6201 struct cfg80211_registered_device *rdev;
6202 int err, reg_idx, start = cb->args[2];
6203
6204 rtnl_lock();
6205
6206 if (cfg80211_regdomain && start == 0) {
6207 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6208 NLM_F_MULTI, NULL,
6209 rtnl_dereference(cfg80211_regdomain));
6210 if (err < 0)
6211 goto out_err;
6212 }
6213
6214 /* the global regdom is idx 0 */
6215 reg_idx = 1;
6216 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6217 regdom = get_wiphy_regdom(&rdev->wiphy);
6218 if (!regdom)
6219 continue;
6220
6221 if (++reg_idx <= start)
6222 continue;
6223
6224 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6225 NLM_F_MULTI, &rdev->wiphy, regdom);
6226 if (err < 0) {
6227 reg_idx--;
6228 break;
6229 }
6230 }
6231
6232 cb->args[2] = reg_idx;
6233 err = skb->len;
6234 out_err:
6235 rtnl_unlock();
6236 return err;
6237 }
6238
6239 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6240 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6241 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6242 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6243 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6244 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6245 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6246 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6247 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6248 };
6249
6250 static int parse_reg_rule(struct nlattr *tb[],
6251 struct ieee80211_reg_rule *reg_rule)
6252 {
6253 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6254 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6255
6256 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6257 return -EINVAL;
6258 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6259 return -EINVAL;
6260 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6261 return -EINVAL;
6262 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6263 return -EINVAL;
6264 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6265 return -EINVAL;
6266
6267 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6268
6269 freq_range->start_freq_khz =
6270 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6271 freq_range->end_freq_khz =
6272 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6273 freq_range->max_bandwidth_khz =
6274 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6275
6276 power_rule->max_eirp =
6277 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6278
6279 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6280 power_rule->max_antenna_gain =
6281 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6282
6283 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6284 reg_rule->dfs_cac_ms =
6285 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6286
6287 return 0;
6288 }
6289
6290 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6291 {
6292 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6293 struct nlattr *nl_reg_rule;
6294 char *alpha2;
6295 int rem_reg_rules, r;
6296 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6297 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6298 struct ieee80211_regdomain *rd;
6299
6300 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6301 return -EINVAL;
6302
6303 if (!info->attrs[NL80211_ATTR_REG_RULES])
6304 return -EINVAL;
6305
6306 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6307
6308 if (info->attrs[NL80211_ATTR_DFS_REGION])
6309 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6310
6311 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6312 rem_reg_rules) {
6313 num_rules++;
6314 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6315 return -EINVAL;
6316 }
6317
6318 if (!reg_is_valid_request(alpha2))
6319 return -EINVAL;
6320
6321 size_of_regd = sizeof(struct ieee80211_regdomain) +
6322 num_rules * sizeof(struct ieee80211_reg_rule);
6323
6324 rd = kzalloc(size_of_regd, GFP_KERNEL);
6325 if (!rd)
6326 return -ENOMEM;
6327
6328 rd->n_reg_rules = num_rules;
6329 rd->alpha2[0] = alpha2[0];
6330 rd->alpha2[1] = alpha2[1];
6331
6332 /*
6333 * Disable DFS master mode if the DFS region was
6334 * not supported or known on this kernel.
6335 */
6336 if (reg_supported_dfs_region(dfs_region))
6337 rd->dfs_region = dfs_region;
6338
6339 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6340 rem_reg_rules) {
6341 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6342 nl_reg_rule, reg_rule_policy);
6343 if (r)
6344 goto bad_reg;
6345 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6346 if (r)
6347 goto bad_reg;
6348
6349 rule_idx++;
6350
6351 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6352 r = -EINVAL;
6353 goto bad_reg;
6354 }
6355 }
6356
6357 /* set_regdom takes ownership of rd */
6358 return set_regdom(rd, REGD_SOURCE_CRDA);
6359 bad_reg:
6360 kfree(rd);
6361 return r;
6362 }
6363 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6364
6365 static int validate_scan_freqs(struct nlattr *freqs)
6366 {
6367 struct nlattr *attr1, *attr2;
6368 int n_channels = 0, tmp1, tmp2;
6369
6370 nla_for_each_nested(attr1, freqs, tmp1) {
6371 n_channels++;
6372 /*
6373 * Some hardware has a limited channel list for
6374 * scanning, and it is pretty much nonsensical
6375 * to scan for a channel twice, so disallow that
6376 * and don't require drivers to check that the
6377 * channel list they get isn't longer than what
6378 * they can scan, as long as they can scan all
6379 * the channels they registered at once.
6380 */
6381 nla_for_each_nested(attr2, freqs, tmp2)
6382 if (attr1 != attr2 &&
6383 nla_get_u32(attr1) == nla_get_u32(attr2))
6384 return 0;
6385 }
6386
6387 return n_channels;
6388 }
6389
6390 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6391 {
6392 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6393 }
6394
6395 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6396 struct cfg80211_bss_selection *bss_select)
6397 {
6398 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6399 struct nlattr *nest;
6400 int err;
6401 bool found = false;
6402 int i;
6403
6404 /* only process one nested attribute */
6405 nest = nla_data(nla);
6406 if (!nla_ok(nest, nla_len(nest)))
6407 return -EINVAL;
6408
6409 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6410 nl80211_bss_select_policy);
6411 if (err)
6412 return err;
6413
6414 /* only one attribute may be given */
6415 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6416 if (attr[i]) {
6417 if (found)
6418 return -EINVAL;
6419 found = true;
6420 }
6421 }
6422
6423 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6424
6425 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6426 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6427
6428 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6429 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6430 bss_select->param.band_pref =
6431 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6432 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6433 return -EINVAL;
6434 }
6435
6436 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6437 struct nl80211_bss_select_rssi_adjust *adj_param;
6438
6439 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6440 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6441 bss_select->param.adjust.band = adj_param->band;
6442 bss_select->param.adjust.delta = adj_param->delta;
6443 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6444 return -EINVAL;
6445 }
6446
6447 /* user-space did not provide behaviour attribute */
6448 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6449 return -EINVAL;
6450
6451 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6452 return -EINVAL;
6453
6454 return 0;
6455 }
6456
6457 static int nl80211_parse_random_mac(struct nlattr **attrs,
6458 u8 *mac_addr, u8 *mac_addr_mask)
6459 {
6460 int i;
6461
6462 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6463 eth_zero_addr(mac_addr);
6464 eth_zero_addr(mac_addr_mask);
6465 mac_addr[0] = 0x2;
6466 mac_addr_mask[0] = 0x3;
6467
6468 return 0;
6469 }
6470
6471 /* need both or none */
6472 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6473 return -EINVAL;
6474
6475 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6476 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6477
6478 /* don't allow or configure an mcast address */
6479 if (!is_multicast_ether_addr(mac_addr_mask) ||
6480 is_multicast_ether_addr(mac_addr))
6481 return -EINVAL;
6482
6483 /*
6484 * allow users to pass a MAC address that has bits set outside
6485 * of the mask, but don't bother drivers with having to deal
6486 * with such bits
6487 */
6488 for (i = 0; i < ETH_ALEN; i++)
6489 mac_addr[i] &= mac_addr_mask[i];
6490
6491 return 0;
6492 }
6493
6494 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6495 {
6496 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6497 struct wireless_dev *wdev = info->user_ptr[1];
6498 struct cfg80211_scan_request *request;
6499 struct nlattr *attr;
6500 struct wiphy *wiphy;
6501 int err, tmp, n_ssids = 0, n_channels, i;
6502 size_t ie_len;
6503
6504 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6505 return -EINVAL;
6506
6507 wiphy = &rdev->wiphy;
6508
6509 if (wdev->iftype == NL80211_IFTYPE_NAN)
6510 return -EOPNOTSUPP;
6511
6512 if (!rdev->ops->scan)
6513 return -EOPNOTSUPP;
6514
6515 if (rdev->scan_req || rdev->scan_msg) {
6516 err = -EBUSY;
6517 goto unlock;
6518 }
6519
6520 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6521 n_channels = validate_scan_freqs(
6522 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6523 if (!n_channels) {
6524 err = -EINVAL;
6525 goto unlock;
6526 }
6527 } else {
6528 n_channels = ieee80211_get_num_supported_channels(wiphy);
6529 }
6530
6531 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6532 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6533 n_ssids++;
6534
6535 if (n_ssids > wiphy->max_scan_ssids) {
6536 err = -EINVAL;
6537 goto unlock;
6538 }
6539
6540 if (info->attrs[NL80211_ATTR_IE])
6541 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6542 else
6543 ie_len = 0;
6544
6545 if (ie_len > wiphy->max_scan_ie_len) {
6546 err = -EINVAL;
6547 goto unlock;
6548 }
6549
6550 request = kzalloc(sizeof(*request)
6551 + sizeof(*request->ssids) * n_ssids
6552 + sizeof(*request->channels) * n_channels
6553 + ie_len, GFP_KERNEL);
6554 if (!request) {
6555 err = -ENOMEM;
6556 goto unlock;
6557 }
6558
6559 if (n_ssids)
6560 request->ssids = (void *)&request->channels[n_channels];
6561 request->n_ssids = n_ssids;
6562 if (ie_len) {
6563 if (n_ssids)
6564 request->ie = (void *)(request->ssids + n_ssids);
6565 else
6566 request->ie = (void *)(request->channels + n_channels);
6567 }
6568
6569 i = 0;
6570 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6571 /* user specified, bail out if channel not found */
6572 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6573 struct ieee80211_channel *chan;
6574
6575 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6576
6577 if (!chan) {
6578 err = -EINVAL;
6579 goto out_free;
6580 }
6581
6582 /* ignore disabled channels */
6583 if (chan->flags & IEEE80211_CHAN_DISABLED)
6584 continue;
6585
6586 request->channels[i] = chan;
6587 i++;
6588 }
6589 } else {
6590 enum nl80211_band band;
6591
6592 /* all channels */
6593 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6594 int j;
6595
6596 if (!wiphy->bands[band])
6597 continue;
6598 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6599 struct ieee80211_channel *chan;
6600
6601 chan = &wiphy->bands[band]->channels[j];
6602
6603 if (chan->flags & IEEE80211_CHAN_DISABLED)
6604 continue;
6605
6606 request->channels[i] = chan;
6607 i++;
6608 }
6609 }
6610 }
6611
6612 if (!i) {
6613 err = -EINVAL;
6614 goto out_free;
6615 }
6616
6617 request->n_channels = i;
6618
6619 i = 0;
6620 if (n_ssids) {
6621 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6622 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6623 err = -EINVAL;
6624 goto out_free;
6625 }
6626 request->ssids[i].ssid_len = nla_len(attr);
6627 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6628 i++;
6629 }
6630 }
6631
6632 if (info->attrs[NL80211_ATTR_IE]) {
6633 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6634 memcpy((void *)request->ie,
6635 nla_data(info->attrs[NL80211_ATTR_IE]),
6636 request->ie_len);
6637 }
6638
6639 for (i = 0; i < NUM_NL80211_BANDS; i++)
6640 if (wiphy->bands[i])
6641 request->rates[i] =
6642 (1 << wiphy->bands[i]->n_bitrates) - 1;
6643
6644 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6645 nla_for_each_nested(attr,
6646 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6647 tmp) {
6648 enum nl80211_band band = nla_type(attr);
6649
6650 if (band < 0 || band >= NUM_NL80211_BANDS) {
6651 err = -EINVAL;
6652 goto out_free;
6653 }
6654
6655 if (!wiphy->bands[band])
6656 continue;
6657
6658 err = ieee80211_get_ratemask(wiphy->bands[band],
6659 nla_data(attr),
6660 nla_len(attr),
6661 &request->rates[band]);
6662 if (err)
6663 goto out_free;
6664 }
6665 }
6666
6667 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6668 if (!wiphy_ext_feature_isset(wiphy,
6669 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6670 err = -EOPNOTSUPP;
6671 goto out_free;
6672 }
6673
6674 request->duration =
6675 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6676 request->duration_mandatory =
6677 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6678 }
6679
6680 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6681 request->flags = nla_get_u32(
6682 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6683 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6684 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6685 err = -EOPNOTSUPP;
6686 goto out_free;
6687 }
6688
6689 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6690 if (!(wiphy->features &
6691 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6692 err = -EOPNOTSUPP;
6693 goto out_free;
6694 }
6695
6696 if (wdev->current_bss) {
6697 err = -EOPNOTSUPP;
6698 goto out_free;
6699 }
6700
6701 err = nl80211_parse_random_mac(info->attrs,
6702 request->mac_addr,
6703 request->mac_addr_mask);
6704 if (err)
6705 goto out_free;
6706 }
6707 }
6708
6709 request->no_cck =
6710 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6711
6712 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6713 * BSSID to scan for. This was problematic because that same attribute
6714 * was already used for another purpose (local random MAC address). The
6715 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6716 * compatibility with older userspace components, also use the
6717 * NL80211_ATTR_MAC value here if it can be determined to be used for
6718 * the specific BSSID use case instead of the random MAC address
6719 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6720 */
6721 if (info->attrs[NL80211_ATTR_BSSID])
6722 memcpy(request->bssid,
6723 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6724 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6725 info->attrs[NL80211_ATTR_MAC])
6726 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6727 ETH_ALEN);
6728 else
6729 eth_broadcast_addr(request->bssid);
6730
6731 request->wdev = wdev;
6732 request->wiphy = &rdev->wiphy;
6733 request->scan_start = jiffies;
6734
6735 rdev->scan_req = request;
6736 err = rdev_scan(rdev, request);
6737
6738 if (!err) {
6739 nl80211_send_scan_start(rdev, wdev);
6740 if (wdev->netdev)
6741 dev_hold(wdev->netdev);
6742 } else {
6743 out_free:
6744 rdev->scan_req = NULL;
6745 kfree(request);
6746 }
6747
6748 unlock:
6749 return err;
6750 }
6751
6752 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6753 {
6754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6755 struct wireless_dev *wdev = info->user_ptr[1];
6756
6757 if (!rdev->ops->abort_scan)
6758 return -EOPNOTSUPP;
6759
6760 if (rdev->scan_msg)
6761 return 0;
6762
6763 if (!rdev->scan_req)
6764 return -ENOENT;
6765
6766 rdev_abort_scan(rdev, wdev);
6767 return 0;
6768 }
6769
6770 static int
6771 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6772 struct cfg80211_sched_scan_request *request,
6773 struct nlattr **attrs)
6774 {
6775 int tmp, err, i = 0;
6776 struct nlattr *attr;
6777
6778 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6779 u32 interval;
6780
6781 /*
6782 * If scan plans are not specified,
6783 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6784 * case one scan plan will be set with the specified scan
6785 * interval and infinite number of iterations.
6786 */
6787 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6788 return -EINVAL;
6789
6790 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6791 if (!interval)
6792 return -EINVAL;
6793
6794 request->scan_plans[0].interval =
6795 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6796 if (!request->scan_plans[0].interval)
6797 return -EINVAL;
6798
6799 if (request->scan_plans[0].interval >
6800 wiphy->max_sched_scan_plan_interval)
6801 request->scan_plans[0].interval =
6802 wiphy->max_sched_scan_plan_interval;
6803
6804 return 0;
6805 }
6806
6807 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6808 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6809
6810 if (WARN_ON(i >= n_plans))
6811 return -EINVAL;
6812
6813 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6814 attr, nl80211_plan_policy);
6815 if (err)
6816 return err;
6817
6818 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6819 return -EINVAL;
6820
6821 request->scan_plans[i].interval =
6822 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6823 if (!request->scan_plans[i].interval ||
6824 request->scan_plans[i].interval >
6825 wiphy->max_sched_scan_plan_interval)
6826 return -EINVAL;
6827
6828 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6829 request->scan_plans[i].iterations =
6830 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6831 if (!request->scan_plans[i].iterations ||
6832 (request->scan_plans[i].iterations >
6833 wiphy->max_sched_scan_plan_iterations))
6834 return -EINVAL;
6835 } else if (i < n_plans - 1) {
6836 /*
6837 * All scan plans but the last one must specify
6838 * a finite number of iterations
6839 */
6840 return -EINVAL;
6841 }
6842
6843 i++;
6844 }
6845
6846 /*
6847 * The last scan plan must not specify the number of
6848 * iterations, it is supposed to run infinitely
6849 */
6850 if (request->scan_plans[n_plans - 1].iterations)
6851 return -EINVAL;
6852
6853 return 0;
6854 }
6855
6856 static struct cfg80211_sched_scan_request *
6857 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6858 struct nlattr **attrs)
6859 {
6860 struct cfg80211_sched_scan_request *request;
6861 struct nlattr *attr;
6862 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6863 enum nl80211_band band;
6864 size_t ie_len;
6865 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6866 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6867
6868 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6869 return ERR_PTR(-EINVAL);
6870
6871 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6872 n_channels = validate_scan_freqs(
6873 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6874 if (!n_channels)
6875 return ERR_PTR(-EINVAL);
6876 } else {
6877 n_channels = ieee80211_get_num_supported_channels(wiphy);
6878 }
6879
6880 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6881 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6882 tmp)
6883 n_ssids++;
6884
6885 if (n_ssids > wiphy->max_sched_scan_ssids)
6886 return ERR_PTR(-EINVAL);
6887
6888 /*
6889 * First, count the number of 'real' matchsets. Due to an issue with
6890 * the old implementation, matchsets containing only the RSSI attribute
6891 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6892 * RSSI for all matchsets, rather than their own matchset for reporting
6893 * all APs with a strong RSSI. This is needed to be compatible with
6894 * older userspace that treated a matchset with only the RSSI as the
6895 * global RSSI for all other matchsets - if there are other matchsets.
6896 */
6897 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6898 nla_for_each_nested(attr,
6899 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6900 tmp) {
6901 struct nlattr *rssi;
6902
6903 err = nla_parse_nested(tb,
6904 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6905 attr, nl80211_match_policy);
6906 if (err)
6907 return ERR_PTR(err);
6908 /* add other standalone attributes here */
6909 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6910 n_match_sets++;
6911 continue;
6912 }
6913 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6914 if (rssi)
6915 default_match_rssi = nla_get_s32(rssi);
6916 }
6917 }
6918
6919 /* However, if there's no other matchset, add the RSSI one */
6920 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6921 n_match_sets = 1;
6922
6923 if (n_match_sets > wiphy->max_match_sets)
6924 return ERR_PTR(-EINVAL);
6925
6926 if (attrs[NL80211_ATTR_IE])
6927 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6928 else
6929 ie_len = 0;
6930
6931 if (ie_len > wiphy->max_sched_scan_ie_len)
6932 return ERR_PTR(-EINVAL);
6933
6934 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6935 /*
6936 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6937 * each scan plan already specifies its own interval
6938 */
6939 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6940 return ERR_PTR(-EINVAL);
6941
6942 nla_for_each_nested(attr,
6943 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6944 n_plans++;
6945 } else {
6946 /*
6947 * The scan interval attribute is kept for backward
6948 * compatibility. If no scan plans are specified and sched scan
6949 * interval is specified, one scan plan will be set with this
6950 * scan interval and infinite number of iterations.
6951 */
6952 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6953 return ERR_PTR(-EINVAL);
6954
6955 n_plans = 1;
6956 }
6957
6958 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6959 return ERR_PTR(-EINVAL);
6960
6961 request = kzalloc(sizeof(*request)
6962 + sizeof(*request->ssids) * n_ssids
6963 + sizeof(*request->match_sets) * n_match_sets
6964 + sizeof(*request->scan_plans) * n_plans
6965 + sizeof(*request->channels) * n_channels
6966 + ie_len, GFP_KERNEL);
6967 if (!request)
6968 return ERR_PTR(-ENOMEM);
6969
6970 if (n_ssids)
6971 request->ssids = (void *)&request->channels[n_channels];
6972 request->n_ssids = n_ssids;
6973 if (ie_len) {
6974 if (n_ssids)
6975 request->ie = (void *)(request->ssids + n_ssids);
6976 else
6977 request->ie = (void *)(request->channels + n_channels);
6978 }
6979
6980 if (n_match_sets) {
6981 if (request->ie)
6982 request->match_sets = (void *)(request->ie + ie_len);
6983 else if (n_ssids)
6984 request->match_sets =
6985 (void *)(request->ssids + n_ssids);
6986 else
6987 request->match_sets =
6988 (void *)(request->channels + n_channels);
6989 }
6990 request->n_match_sets = n_match_sets;
6991
6992 if (n_match_sets)
6993 request->scan_plans = (void *)(request->match_sets +
6994 n_match_sets);
6995 else if (request->ie)
6996 request->scan_plans = (void *)(request->ie + ie_len);
6997 else if (n_ssids)
6998 request->scan_plans = (void *)(request->ssids + n_ssids);
6999 else
7000 request->scan_plans = (void *)(request->channels + n_channels);
7001
7002 request->n_scan_plans = n_plans;
7003
7004 i = 0;
7005 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7006 /* user specified, bail out if channel not found */
7007 nla_for_each_nested(attr,
7008 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7009 tmp) {
7010 struct ieee80211_channel *chan;
7011
7012 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7013
7014 if (!chan) {
7015 err = -EINVAL;
7016 goto out_free;
7017 }
7018
7019 /* ignore disabled channels */
7020 if (chan->flags & IEEE80211_CHAN_DISABLED)
7021 continue;
7022
7023 request->channels[i] = chan;
7024 i++;
7025 }
7026 } else {
7027 /* all channels */
7028 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7029 int j;
7030
7031 if (!wiphy->bands[band])
7032 continue;
7033 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7034 struct ieee80211_channel *chan;
7035
7036 chan = &wiphy->bands[band]->channels[j];
7037
7038 if (chan->flags & IEEE80211_CHAN_DISABLED)
7039 continue;
7040
7041 request->channels[i] = chan;
7042 i++;
7043 }
7044 }
7045 }
7046
7047 if (!i) {
7048 err = -EINVAL;
7049 goto out_free;
7050 }
7051
7052 request->n_channels = i;
7053
7054 i = 0;
7055 if (n_ssids) {
7056 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7057 tmp) {
7058 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7059 err = -EINVAL;
7060 goto out_free;
7061 }
7062 request->ssids[i].ssid_len = nla_len(attr);
7063 memcpy(request->ssids[i].ssid, nla_data(attr),
7064 nla_len(attr));
7065 i++;
7066 }
7067 }
7068
7069 i = 0;
7070 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7071 nla_for_each_nested(attr,
7072 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7073 tmp) {
7074 struct nlattr *ssid, *rssi;
7075
7076 err = nla_parse_nested(tb,
7077 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7078 attr, nl80211_match_policy);
7079 if (err)
7080 goto out_free;
7081 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7082 if (ssid) {
7083 if (WARN_ON(i >= n_match_sets)) {
7084 /* this indicates a programming error,
7085 * the loop above should have verified
7086 * things properly
7087 */
7088 err = -EINVAL;
7089 goto out_free;
7090 }
7091
7092 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7093 err = -EINVAL;
7094 goto out_free;
7095 }
7096 memcpy(request->match_sets[i].ssid.ssid,
7097 nla_data(ssid), nla_len(ssid));
7098 request->match_sets[i].ssid.ssid_len =
7099 nla_len(ssid);
7100 /* special attribute - old implementation w/a */
7101 request->match_sets[i].rssi_thold =
7102 default_match_rssi;
7103 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7104 if (rssi)
7105 request->match_sets[i].rssi_thold =
7106 nla_get_s32(rssi);
7107 }
7108 i++;
7109 }
7110
7111 /* there was no other matchset, so the RSSI one is alone */
7112 if (i == 0 && n_match_sets)
7113 request->match_sets[0].rssi_thold = default_match_rssi;
7114
7115 request->min_rssi_thold = INT_MAX;
7116 for (i = 0; i < n_match_sets; i++)
7117 request->min_rssi_thold =
7118 min(request->match_sets[i].rssi_thold,
7119 request->min_rssi_thold);
7120 } else {
7121 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7122 }
7123
7124 if (ie_len) {
7125 request->ie_len = ie_len;
7126 memcpy((void *)request->ie,
7127 nla_data(attrs[NL80211_ATTR_IE]),
7128 request->ie_len);
7129 }
7130
7131 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7132 request->flags = nla_get_u32(
7133 attrs[NL80211_ATTR_SCAN_FLAGS]);
7134 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7135 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7136 err = -EOPNOTSUPP;
7137 goto out_free;
7138 }
7139
7140 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7141 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7142
7143 if (!wdev) /* must be net-detect */
7144 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7145
7146 if (!(wiphy->features & flg)) {
7147 err = -EOPNOTSUPP;
7148 goto out_free;
7149 }
7150
7151 if (wdev && wdev->current_bss) {
7152 err = -EOPNOTSUPP;
7153 goto out_free;
7154 }
7155
7156 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7157 request->mac_addr_mask);
7158 if (err)
7159 goto out_free;
7160 }
7161 }
7162
7163 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7164 request->delay =
7165 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7166
7167 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7168 if (err)
7169 goto out_free;
7170
7171 request->scan_start = jiffies;
7172
7173 return request;
7174
7175 out_free:
7176 kfree(request);
7177 return ERR_PTR(err);
7178 }
7179
7180 static int nl80211_start_sched_scan(struct sk_buff *skb,
7181 struct genl_info *info)
7182 {
7183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7184 struct net_device *dev = info->user_ptr[1];
7185 struct wireless_dev *wdev = dev->ieee80211_ptr;
7186 struct cfg80211_sched_scan_request *sched_scan_req;
7187 int err;
7188
7189 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7190 !rdev->ops->sched_scan_start)
7191 return -EOPNOTSUPP;
7192
7193 if (rdev->sched_scan_req)
7194 return -EINPROGRESS;
7195
7196 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7197 info->attrs);
7198
7199 err = PTR_ERR_OR_ZERO(sched_scan_req);
7200 if (err)
7201 goto out_err;
7202
7203 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7204 if (err)
7205 goto out_free;
7206
7207 sched_scan_req->dev = dev;
7208 sched_scan_req->wiphy = &rdev->wiphy;
7209
7210 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7211 sched_scan_req->owner_nlportid = info->snd_portid;
7212
7213 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7214
7215 nl80211_send_sched_scan(rdev, dev,
7216 NL80211_CMD_START_SCHED_SCAN);
7217 return 0;
7218
7219 out_free:
7220 kfree(sched_scan_req);
7221 out_err:
7222 return err;
7223 }
7224
7225 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7226 struct genl_info *info)
7227 {
7228 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7229
7230 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7231 !rdev->ops->sched_scan_stop)
7232 return -EOPNOTSUPP;
7233
7234 return __cfg80211_stop_sched_scan(rdev, false);
7235 }
7236
7237 static int nl80211_start_radar_detection(struct sk_buff *skb,
7238 struct genl_info *info)
7239 {
7240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7241 struct net_device *dev = info->user_ptr[1];
7242 struct wireless_dev *wdev = dev->ieee80211_ptr;
7243 struct cfg80211_chan_def chandef;
7244 enum nl80211_dfs_regions dfs_region;
7245 unsigned int cac_time_ms;
7246 int err;
7247
7248 dfs_region = reg_get_dfs_region(wdev->wiphy);
7249 if (dfs_region == NL80211_DFS_UNSET)
7250 return -EINVAL;
7251
7252 err = nl80211_parse_chandef(rdev, info, &chandef);
7253 if (err)
7254 return err;
7255
7256 if (netif_carrier_ok(dev))
7257 return -EBUSY;
7258
7259 if (wdev->cac_started)
7260 return -EBUSY;
7261
7262 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7263 wdev->iftype);
7264 if (err < 0)
7265 return err;
7266
7267 if (err == 0)
7268 return -EINVAL;
7269
7270 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7271 return -EINVAL;
7272
7273 if (!rdev->ops->start_radar_detection)
7274 return -EOPNOTSUPP;
7275
7276 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7277 if (WARN_ON(!cac_time_ms))
7278 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7279
7280 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7281 if (!err) {
7282 wdev->chandef = chandef;
7283 wdev->cac_started = true;
7284 wdev->cac_start_time = jiffies;
7285 wdev->cac_time_ms = cac_time_ms;
7286 }
7287 return err;
7288 }
7289
7290 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7291 {
7292 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7293 struct net_device *dev = info->user_ptr[1];
7294 struct wireless_dev *wdev = dev->ieee80211_ptr;
7295 struct cfg80211_csa_settings params;
7296 /* csa_attrs is defined static to avoid waste of stack size - this
7297 * function is called under RTNL lock, so this should not be a problem.
7298 */
7299 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7300 int err;
7301 bool need_new_beacon = false;
7302 int len, i;
7303 u32 cs_count;
7304
7305 if (!rdev->ops->channel_switch ||
7306 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7307 return -EOPNOTSUPP;
7308
7309 switch (dev->ieee80211_ptr->iftype) {
7310 case NL80211_IFTYPE_AP:
7311 case NL80211_IFTYPE_P2P_GO:
7312 need_new_beacon = true;
7313
7314 /* useless if AP is not running */
7315 if (!wdev->beacon_interval)
7316 return -ENOTCONN;
7317 break;
7318 case NL80211_IFTYPE_ADHOC:
7319 if (!wdev->ssid_len)
7320 return -ENOTCONN;
7321 break;
7322 case NL80211_IFTYPE_MESH_POINT:
7323 if (!wdev->mesh_id_len)
7324 return -ENOTCONN;
7325 break;
7326 default:
7327 return -EOPNOTSUPP;
7328 }
7329
7330 memset(&params, 0, sizeof(params));
7331
7332 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7333 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7334 return -EINVAL;
7335
7336 /* only important for AP, IBSS and mesh create IEs internally */
7337 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7338 return -EINVAL;
7339
7340 /* Even though the attribute is u32, the specification says
7341 * u8, so let's make sure we don't overflow.
7342 */
7343 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7344 if (cs_count > 255)
7345 return -EINVAL;
7346
7347 params.count = cs_count;
7348
7349 if (!need_new_beacon)
7350 goto skip_beacons;
7351
7352 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7353 if (err)
7354 return err;
7355
7356 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7357 info->attrs[NL80211_ATTR_CSA_IES],
7358 nl80211_policy);
7359 if (err)
7360 return err;
7361
7362 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7363 if (err)
7364 return err;
7365
7366 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7367 return -EINVAL;
7368
7369 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7370 if (!len || (len % sizeof(u16)))
7371 return -EINVAL;
7372
7373 params.n_counter_offsets_beacon = len / sizeof(u16);
7374 if (rdev->wiphy.max_num_csa_counters &&
7375 (params.n_counter_offsets_beacon >
7376 rdev->wiphy.max_num_csa_counters))
7377 return -EINVAL;
7378
7379 params.counter_offsets_beacon =
7380 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7381
7382 /* sanity checks - counters should fit and be the same */
7383 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7384 u16 offset = params.counter_offsets_beacon[i];
7385
7386 if (offset >= params.beacon_csa.tail_len)
7387 return -EINVAL;
7388
7389 if (params.beacon_csa.tail[offset] != params.count)
7390 return -EINVAL;
7391 }
7392
7393 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7394 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7395 if (!len || (len % sizeof(u16)))
7396 return -EINVAL;
7397
7398 params.n_counter_offsets_presp = len / sizeof(u16);
7399 if (rdev->wiphy.max_num_csa_counters &&
7400 (params.n_counter_offsets_presp >
7401 rdev->wiphy.max_num_csa_counters))
7402 return -EINVAL;
7403
7404 params.counter_offsets_presp =
7405 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7406
7407 /* sanity checks - counters should fit and be the same */
7408 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7409 u16 offset = params.counter_offsets_presp[i];
7410
7411 if (offset >= params.beacon_csa.probe_resp_len)
7412 return -EINVAL;
7413
7414 if (params.beacon_csa.probe_resp[offset] !=
7415 params.count)
7416 return -EINVAL;
7417 }
7418 }
7419
7420 skip_beacons:
7421 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7422 if (err)
7423 return err;
7424
7425 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7426 wdev->iftype))
7427 return -EINVAL;
7428
7429 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7430 &params.chandef,
7431 wdev->iftype);
7432 if (err < 0)
7433 return err;
7434
7435 if (err > 0)
7436 params.radar_required = true;
7437
7438 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7439 params.block_tx = true;
7440
7441 wdev_lock(wdev);
7442 err = rdev_channel_switch(rdev, dev, &params);
7443 wdev_unlock(wdev);
7444
7445 return err;
7446 }
7447
7448 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7449 u32 seq, int flags,
7450 struct cfg80211_registered_device *rdev,
7451 struct wireless_dev *wdev,
7452 struct cfg80211_internal_bss *intbss)
7453 {
7454 struct cfg80211_bss *res = &intbss->pub;
7455 const struct cfg80211_bss_ies *ies;
7456 void *hdr;
7457 struct nlattr *bss;
7458
7459 ASSERT_WDEV_LOCK(wdev);
7460
7461 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7462 NL80211_CMD_NEW_SCAN_RESULTS);
7463 if (!hdr)
7464 return -1;
7465
7466 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7467
7468 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7469 goto nla_put_failure;
7470 if (wdev->netdev &&
7471 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7472 goto nla_put_failure;
7473 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7474 NL80211_ATTR_PAD))
7475 goto nla_put_failure;
7476
7477 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7478 if (!bss)
7479 goto nla_put_failure;
7480 if ((!is_zero_ether_addr(res->bssid) &&
7481 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7482 goto nla_put_failure;
7483
7484 rcu_read_lock();
7485 /* indicate whether we have probe response data or not */
7486 if (rcu_access_pointer(res->proberesp_ies) &&
7487 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7488 goto fail_unlock_rcu;
7489
7490 /* this pointer prefers to be pointed to probe response data
7491 * but is always valid
7492 */
7493 ies = rcu_dereference(res->ies);
7494 if (ies) {
7495 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7496 NL80211_BSS_PAD))
7497 goto fail_unlock_rcu;
7498 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7499 ies->len, ies->data))
7500 goto fail_unlock_rcu;
7501 }
7502
7503 /* and this pointer is always (unless driver didn't know) beacon data */
7504 ies = rcu_dereference(res->beacon_ies);
7505 if (ies && ies->from_beacon) {
7506 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7507 NL80211_BSS_PAD))
7508 goto fail_unlock_rcu;
7509 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7510 ies->len, ies->data))
7511 goto fail_unlock_rcu;
7512 }
7513 rcu_read_unlock();
7514
7515 if (res->beacon_interval &&
7516 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7517 goto nla_put_failure;
7518 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7519 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7520 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7521 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7522 jiffies_to_msecs(jiffies - intbss->ts)))
7523 goto nla_put_failure;
7524
7525 if (intbss->parent_tsf &&
7526 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7527 intbss->parent_tsf, NL80211_BSS_PAD) ||
7528 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7529 intbss->parent_bssid)))
7530 goto nla_put_failure;
7531
7532 if (intbss->ts_boottime &&
7533 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7534 intbss->ts_boottime, NL80211_BSS_PAD))
7535 goto nla_put_failure;
7536
7537 switch (rdev->wiphy.signal_type) {
7538 case CFG80211_SIGNAL_TYPE_MBM:
7539 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7540 goto nla_put_failure;
7541 break;
7542 case CFG80211_SIGNAL_TYPE_UNSPEC:
7543 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7544 goto nla_put_failure;
7545 break;
7546 default:
7547 break;
7548 }
7549
7550 switch (wdev->iftype) {
7551 case NL80211_IFTYPE_P2P_CLIENT:
7552 case NL80211_IFTYPE_STATION:
7553 if (intbss == wdev->current_bss &&
7554 nla_put_u32(msg, NL80211_BSS_STATUS,
7555 NL80211_BSS_STATUS_ASSOCIATED))
7556 goto nla_put_failure;
7557 break;
7558 case NL80211_IFTYPE_ADHOC:
7559 if (intbss == wdev->current_bss &&
7560 nla_put_u32(msg, NL80211_BSS_STATUS,
7561 NL80211_BSS_STATUS_IBSS_JOINED))
7562 goto nla_put_failure;
7563 break;
7564 default:
7565 break;
7566 }
7567
7568 nla_nest_end(msg, bss);
7569
7570 genlmsg_end(msg, hdr);
7571 return 0;
7572
7573 fail_unlock_rcu:
7574 rcu_read_unlock();
7575 nla_put_failure:
7576 genlmsg_cancel(msg, hdr);
7577 return -EMSGSIZE;
7578 }
7579
7580 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7581 {
7582 struct cfg80211_registered_device *rdev;
7583 struct cfg80211_internal_bss *scan;
7584 struct wireless_dev *wdev;
7585 int start = cb->args[2], idx = 0;
7586 int err;
7587
7588 rtnl_lock();
7589 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7590 if (err) {
7591 rtnl_unlock();
7592 return err;
7593 }
7594
7595 wdev_lock(wdev);
7596 spin_lock_bh(&rdev->bss_lock);
7597 cfg80211_bss_expire(rdev);
7598
7599 cb->seq = rdev->bss_generation;
7600
7601 list_for_each_entry(scan, &rdev->bss_list, list) {
7602 if (++idx <= start)
7603 continue;
7604 if (nl80211_send_bss(skb, cb,
7605 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7606 rdev, wdev, scan) < 0) {
7607 idx--;
7608 break;
7609 }
7610 }
7611
7612 spin_unlock_bh(&rdev->bss_lock);
7613 wdev_unlock(wdev);
7614
7615 cb->args[2] = idx;
7616 rtnl_unlock();
7617
7618 return skb->len;
7619 }
7620
7621 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7622 int flags, struct net_device *dev,
7623 bool allow_radio_stats,
7624 struct survey_info *survey)
7625 {
7626 void *hdr;
7627 struct nlattr *infoattr;
7628
7629 /* skip radio stats if userspace didn't request them */
7630 if (!survey->channel && !allow_radio_stats)
7631 return 0;
7632
7633 hdr = nl80211hdr_put(msg, portid, seq, flags,
7634 NL80211_CMD_NEW_SURVEY_RESULTS);
7635 if (!hdr)
7636 return -ENOMEM;
7637
7638 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7639 goto nla_put_failure;
7640
7641 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7642 if (!infoattr)
7643 goto nla_put_failure;
7644
7645 if (survey->channel &&
7646 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7647 survey->channel->center_freq))
7648 goto nla_put_failure;
7649
7650 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7651 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7652 goto nla_put_failure;
7653 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7654 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7655 goto nla_put_failure;
7656 if ((survey->filled & SURVEY_INFO_TIME) &&
7657 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7658 survey->time, NL80211_SURVEY_INFO_PAD))
7659 goto nla_put_failure;
7660 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7661 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7662 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7663 goto nla_put_failure;
7664 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7665 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7666 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7667 goto nla_put_failure;
7668 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7669 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7670 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7671 goto nla_put_failure;
7672 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7673 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7674 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7675 goto nla_put_failure;
7676 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7677 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7678 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7679 goto nla_put_failure;
7680
7681 nla_nest_end(msg, infoattr);
7682
7683 genlmsg_end(msg, hdr);
7684 return 0;
7685
7686 nla_put_failure:
7687 genlmsg_cancel(msg, hdr);
7688 return -EMSGSIZE;
7689 }
7690
7691 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7692 {
7693 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7694 struct survey_info survey;
7695 struct cfg80211_registered_device *rdev;
7696 struct wireless_dev *wdev;
7697 int survey_idx = cb->args[2];
7698 int res;
7699 bool radio_stats;
7700
7701 rtnl_lock();
7702 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7703 if (res)
7704 goto out_err;
7705
7706 /* prepare_wdev_dump parsed the attributes */
7707 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7708
7709 if (!wdev->netdev) {
7710 res = -EINVAL;
7711 goto out_err;
7712 }
7713
7714 if (!rdev->ops->dump_survey) {
7715 res = -EOPNOTSUPP;
7716 goto out_err;
7717 }
7718
7719 while (1) {
7720 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7721 if (res == -ENOENT)
7722 break;
7723 if (res)
7724 goto out_err;
7725
7726 /* don't send disabled channels, but do send non-channel data */
7727 if (survey.channel &&
7728 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7729 survey_idx++;
7730 continue;
7731 }
7732
7733 if (nl80211_send_survey(skb,
7734 NETLINK_CB(cb->skb).portid,
7735 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7736 wdev->netdev, radio_stats, &survey) < 0)
7737 goto out;
7738 survey_idx++;
7739 }
7740
7741 out:
7742 cb->args[2] = survey_idx;
7743 res = skb->len;
7744 out_err:
7745 rtnl_unlock();
7746 return res;
7747 }
7748
7749 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7750 {
7751 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7752 NL80211_WPA_VERSION_2));
7753 }
7754
7755 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7756 {
7757 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7758 struct net_device *dev = info->user_ptr[1];
7759 struct ieee80211_channel *chan;
7760 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7761 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7762 enum nl80211_auth_type auth_type;
7763 struct key_parse key;
7764 bool local_state_change;
7765
7766 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7767 return -EINVAL;
7768
7769 if (!info->attrs[NL80211_ATTR_MAC])
7770 return -EINVAL;
7771
7772 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7773 return -EINVAL;
7774
7775 if (!info->attrs[NL80211_ATTR_SSID])
7776 return -EINVAL;
7777
7778 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7779 return -EINVAL;
7780
7781 err = nl80211_parse_key(info, &key);
7782 if (err)
7783 return err;
7784
7785 if (key.idx >= 0) {
7786 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7787 return -EINVAL;
7788 if (!key.p.key || !key.p.key_len)
7789 return -EINVAL;
7790 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7791 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7792 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7793 key.p.key_len != WLAN_KEY_LEN_WEP104))
7794 return -EINVAL;
7795 if (key.idx > 3)
7796 return -EINVAL;
7797 } else {
7798 key.p.key_len = 0;
7799 key.p.key = NULL;
7800 }
7801
7802 if (key.idx >= 0) {
7803 int i;
7804 bool ok = false;
7805
7806 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7807 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7808 ok = true;
7809 break;
7810 }
7811 }
7812 if (!ok)
7813 return -EINVAL;
7814 }
7815
7816 if (!rdev->ops->auth)
7817 return -EOPNOTSUPP;
7818
7819 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7820 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7821 return -EOPNOTSUPP;
7822
7823 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7824 chan = nl80211_get_valid_chan(&rdev->wiphy,
7825 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7826 if (!chan)
7827 return -EINVAL;
7828
7829 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7830 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7831
7832 if (info->attrs[NL80211_ATTR_IE]) {
7833 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7834 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7835 }
7836
7837 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7838 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7839 return -EINVAL;
7840
7841 if ((auth_type == NL80211_AUTHTYPE_SAE ||
7842 auth_type == NL80211_AUTHTYPE_FILS_SK ||
7843 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7844 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7845 !info->attrs[NL80211_ATTR_AUTH_DATA])
7846 return -EINVAL;
7847
7848 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7849 if (auth_type != NL80211_AUTHTYPE_SAE &&
7850 auth_type != NL80211_AUTHTYPE_FILS_SK &&
7851 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7852 auth_type != NL80211_AUTHTYPE_FILS_PK)
7853 return -EINVAL;
7854 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7855 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7856 /* need to include at least Auth Transaction and Status Code */
7857 if (auth_data_len < 4)
7858 return -EINVAL;
7859 }
7860
7861 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7862
7863 /*
7864 * Since we no longer track auth state, ignore
7865 * requests to only change local state.
7866 */
7867 if (local_state_change)
7868 return 0;
7869
7870 wdev_lock(dev->ieee80211_ptr);
7871 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7872 ssid, ssid_len, ie, ie_len,
7873 key.p.key, key.p.key_len, key.idx,
7874 auth_data, auth_data_len);
7875 wdev_unlock(dev->ieee80211_ptr);
7876 return err;
7877 }
7878
7879 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7880 struct genl_info *info,
7881 struct cfg80211_crypto_settings *settings,
7882 int cipher_limit)
7883 {
7884 memset(settings, 0, sizeof(*settings));
7885
7886 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7887
7888 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7889 u16 proto;
7890
7891 proto = nla_get_u16(
7892 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7893 settings->control_port_ethertype = cpu_to_be16(proto);
7894 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7895 proto != ETH_P_PAE)
7896 return -EINVAL;
7897 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7898 settings->control_port_no_encrypt = true;
7899 } else
7900 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7901
7902 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7903 void *data;
7904 int len, i;
7905
7906 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7907 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7908 settings->n_ciphers_pairwise = len / sizeof(u32);
7909
7910 if (len % sizeof(u32))
7911 return -EINVAL;
7912
7913 if (settings->n_ciphers_pairwise > cipher_limit)
7914 return -EINVAL;
7915
7916 memcpy(settings->ciphers_pairwise, data, len);
7917
7918 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7919 if (!cfg80211_supported_cipher_suite(
7920 &rdev->wiphy,
7921 settings->ciphers_pairwise[i]))
7922 return -EINVAL;
7923 }
7924
7925 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7926 settings->cipher_group =
7927 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7928 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7929 settings->cipher_group))
7930 return -EINVAL;
7931 }
7932
7933 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7934 settings->wpa_versions =
7935 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7936 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7937 return -EINVAL;
7938 }
7939
7940 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7941 void *data;
7942 int len;
7943
7944 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7945 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7946 settings->n_akm_suites = len / sizeof(u32);
7947
7948 if (len % sizeof(u32))
7949 return -EINVAL;
7950
7951 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7952 return -EINVAL;
7953
7954 memcpy(settings->akm_suites, data, len);
7955 }
7956
7957 return 0;
7958 }
7959
7960 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7961 {
7962 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7963 struct net_device *dev = info->user_ptr[1];
7964 struct ieee80211_channel *chan;
7965 struct cfg80211_assoc_request req = {};
7966 const u8 *bssid, *ssid;
7967 int err, ssid_len = 0;
7968
7969 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7970 return -EINVAL;
7971
7972 if (!info->attrs[NL80211_ATTR_MAC] ||
7973 !info->attrs[NL80211_ATTR_SSID] ||
7974 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7975 return -EINVAL;
7976
7977 if (!rdev->ops->assoc)
7978 return -EOPNOTSUPP;
7979
7980 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7981 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7982 return -EOPNOTSUPP;
7983
7984 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7985
7986 chan = nl80211_get_valid_chan(&rdev->wiphy,
7987 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7988 if (!chan)
7989 return -EINVAL;
7990
7991 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7992 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7993
7994 if (info->attrs[NL80211_ATTR_IE]) {
7995 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7996 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7997 }
7998
7999 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8000 enum nl80211_mfp mfp =
8001 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8002 if (mfp == NL80211_MFP_REQUIRED)
8003 req.use_mfp = true;
8004 else if (mfp != NL80211_MFP_NO)
8005 return -EINVAL;
8006 }
8007
8008 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8009 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8010
8011 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8012 req.flags |= ASSOC_REQ_DISABLE_HT;
8013
8014 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8015 memcpy(&req.ht_capa_mask,
8016 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8017 sizeof(req.ht_capa_mask));
8018
8019 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8020 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8021 return -EINVAL;
8022 memcpy(&req.ht_capa,
8023 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8024 sizeof(req.ht_capa));
8025 }
8026
8027 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8028 req.flags |= ASSOC_REQ_DISABLE_VHT;
8029
8030 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8031 memcpy(&req.vht_capa_mask,
8032 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8033 sizeof(req.vht_capa_mask));
8034
8035 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8036 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8037 return -EINVAL;
8038 memcpy(&req.vht_capa,
8039 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8040 sizeof(req.vht_capa));
8041 }
8042
8043 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8044 if (!((rdev->wiphy.features &
8045 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8046 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8047 !wiphy_ext_feature_isset(&rdev->wiphy,
8048 NL80211_EXT_FEATURE_RRM))
8049 return -EINVAL;
8050 req.flags |= ASSOC_REQ_USE_RRM;
8051 }
8052
8053 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8054 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8055 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8056 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8057 return -EINVAL;
8058 req.fils_nonces =
8059 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8060 }
8061
8062 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8063 if (!err) {
8064 wdev_lock(dev->ieee80211_ptr);
8065 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8066 ssid, ssid_len, &req);
8067 wdev_unlock(dev->ieee80211_ptr);
8068 }
8069
8070 return err;
8071 }
8072
8073 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8074 {
8075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8076 struct net_device *dev = info->user_ptr[1];
8077 const u8 *ie = NULL, *bssid;
8078 int ie_len = 0, err;
8079 u16 reason_code;
8080 bool local_state_change;
8081
8082 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8083 return -EINVAL;
8084
8085 if (!info->attrs[NL80211_ATTR_MAC])
8086 return -EINVAL;
8087
8088 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8089 return -EINVAL;
8090
8091 if (!rdev->ops->deauth)
8092 return -EOPNOTSUPP;
8093
8094 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8095 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8096 return -EOPNOTSUPP;
8097
8098 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8099
8100 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8101 if (reason_code == 0) {
8102 /* Reason Code 0 is reserved */
8103 return -EINVAL;
8104 }
8105
8106 if (info->attrs[NL80211_ATTR_IE]) {
8107 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8108 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8109 }
8110
8111 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8112
8113 wdev_lock(dev->ieee80211_ptr);
8114 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8115 local_state_change);
8116 wdev_unlock(dev->ieee80211_ptr);
8117 return err;
8118 }
8119
8120 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8121 {
8122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8123 struct net_device *dev = info->user_ptr[1];
8124 const u8 *ie = NULL, *bssid;
8125 int ie_len = 0, err;
8126 u16 reason_code;
8127 bool local_state_change;
8128
8129 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8130 return -EINVAL;
8131
8132 if (!info->attrs[NL80211_ATTR_MAC])
8133 return -EINVAL;
8134
8135 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8136 return -EINVAL;
8137
8138 if (!rdev->ops->disassoc)
8139 return -EOPNOTSUPP;
8140
8141 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8142 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8143 return -EOPNOTSUPP;
8144
8145 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8146
8147 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8148 if (reason_code == 0) {
8149 /* Reason Code 0 is reserved */
8150 return -EINVAL;
8151 }
8152
8153 if (info->attrs[NL80211_ATTR_IE]) {
8154 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8155 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8156 }
8157
8158 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8159
8160 wdev_lock(dev->ieee80211_ptr);
8161 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8162 local_state_change);
8163 wdev_unlock(dev->ieee80211_ptr);
8164 return err;
8165 }
8166
8167 static bool
8168 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8169 int mcast_rate[NUM_NL80211_BANDS],
8170 int rateval)
8171 {
8172 struct wiphy *wiphy = &rdev->wiphy;
8173 bool found = false;
8174 int band, i;
8175
8176 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8177 struct ieee80211_supported_band *sband;
8178
8179 sband = wiphy->bands[band];
8180 if (!sband)
8181 continue;
8182
8183 for (i = 0; i < sband->n_bitrates; i++) {
8184 if (sband->bitrates[i].bitrate == rateval) {
8185 mcast_rate[band] = i + 1;
8186 found = true;
8187 break;
8188 }
8189 }
8190 }
8191
8192 return found;
8193 }
8194
8195 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8196 {
8197 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8198 struct net_device *dev = info->user_ptr[1];
8199 struct cfg80211_ibss_params ibss;
8200 struct wiphy *wiphy;
8201 struct cfg80211_cached_keys *connkeys = NULL;
8202 int err;
8203
8204 memset(&ibss, 0, sizeof(ibss));
8205
8206 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8207 return -EINVAL;
8208
8209 if (!info->attrs[NL80211_ATTR_SSID] ||
8210 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8211 return -EINVAL;
8212
8213 ibss.beacon_interval = 100;
8214
8215 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8216 ibss.beacon_interval =
8217 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8218
8219 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8220 ibss.beacon_interval);
8221 if (err)
8222 return err;
8223
8224 if (!rdev->ops->join_ibss)
8225 return -EOPNOTSUPP;
8226
8227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8228 return -EOPNOTSUPP;
8229
8230 wiphy = &rdev->wiphy;
8231
8232 if (info->attrs[NL80211_ATTR_MAC]) {
8233 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8234
8235 if (!is_valid_ether_addr(ibss.bssid))
8236 return -EINVAL;
8237 }
8238 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8239 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8240
8241 if (info->attrs[NL80211_ATTR_IE]) {
8242 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8243 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8244 }
8245
8246 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8247 if (err)
8248 return err;
8249
8250 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8251 NL80211_IFTYPE_ADHOC))
8252 return -EINVAL;
8253
8254 switch (ibss.chandef.width) {
8255 case NL80211_CHAN_WIDTH_5:
8256 case NL80211_CHAN_WIDTH_10:
8257 case NL80211_CHAN_WIDTH_20_NOHT:
8258 break;
8259 case NL80211_CHAN_WIDTH_20:
8260 case NL80211_CHAN_WIDTH_40:
8261 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8262 return -EINVAL;
8263 break;
8264 case NL80211_CHAN_WIDTH_80:
8265 case NL80211_CHAN_WIDTH_80P80:
8266 case NL80211_CHAN_WIDTH_160:
8267 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8268 return -EINVAL;
8269 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8270 NL80211_EXT_FEATURE_VHT_IBSS))
8271 return -EINVAL;
8272 break;
8273 default:
8274 return -EINVAL;
8275 }
8276
8277 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8278 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8279
8280 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8281 u8 *rates =
8282 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8283 int n_rates =
8284 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8285 struct ieee80211_supported_band *sband =
8286 wiphy->bands[ibss.chandef.chan->band];
8287
8288 err = ieee80211_get_ratemask(sband, rates, n_rates,
8289 &ibss.basic_rates);
8290 if (err)
8291 return err;
8292 }
8293
8294 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8295 memcpy(&ibss.ht_capa_mask,
8296 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8297 sizeof(ibss.ht_capa_mask));
8298
8299 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8300 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8301 return -EINVAL;
8302 memcpy(&ibss.ht_capa,
8303 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8304 sizeof(ibss.ht_capa));
8305 }
8306
8307 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8308 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8309 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8310 return -EINVAL;
8311
8312 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8313 bool no_ht = false;
8314
8315 connkeys = nl80211_parse_connkeys(rdev,
8316 info->attrs[NL80211_ATTR_KEYS],
8317 &no_ht);
8318 if (IS_ERR(connkeys))
8319 return PTR_ERR(connkeys);
8320
8321 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8322 no_ht) {
8323 kzfree(connkeys);
8324 return -EINVAL;
8325 }
8326 }
8327
8328 ibss.control_port =
8329 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8330
8331 ibss.userspace_handles_dfs =
8332 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8333
8334 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8335 if (err)
8336 kzfree(connkeys);
8337 return err;
8338 }
8339
8340 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8341 {
8342 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8343 struct net_device *dev = info->user_ptr[1];
8344
8345 if (!rdev->ops->leave_ibss)
8346 return -EOPNOTSUPP;
8347
8348 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8349 return -EOPNOTSUPP;
8350
8351 return cfg80211_leave_ibss(rdev, dev, false);
8352 }
8353
8354 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8355 {
8356 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8357 struct net_device *dev = info->user_ptr[1];
8358 int mcast_rate[NUM_NL80211_BANDS];
8359 u32 nla_rate;
8360 int err;
8361
8362 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8363 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8364 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8365 return -EOPNOTSUPP;
8366
8367 if (!rdev->ops->set_mcast_rate)
8368 return -EOPNOTSUPP;
8369
8370 memset(mcast_rate, 0, sizeof(mcast_rate));
8371
8372 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8373 return -EINVAL;
8374
8375 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8376 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8377 return -EINVAL;
8378
8379 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8380
8381 return err;
8382 }
8383
8384 static struct sk_buff *
8385 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8386 struct wireless_dev *wdev, int approxlen,
8387 u32 portid, u32 seq, enum nl80211_commands cmd,
8388 enum nl80211_attrs attr,
8389 const struct nl80211_vendor_cmd_info *info,
8390 gfp_t gfp)
8391 {
8392 struct sk_buff *skb;
8393 void *hdr;
8394 struct nlattr *data;
8395
8396 skb = nlmsg_new(approxlen + 100, gfp);
8397 if (!skb)
8398 return NULL;
8399
8400 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8401 if (!hdr) {
8402 kfree_skb(skb);
8403 return NULL;
8404 }
8405
8406 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8407 goto nla_put_failure;
8408
8409 if (info) {
8410 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8411 info->vendor_id))
8412 goto nla_put_failure;
8413 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8414 info->subcmd))
8415 goto nla_put_failure;
8416 }
8417
8418 if (wdev) {
8419 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8420 wdev_id(wdev), NL80211_ATTR_PAD))
8421 goto nla_put_failure;
8422 if (wdev->netdev &&
8423 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8424 wdev->netdev->ifindex))
8425 goto nla_put_failure;
8426 }
8427
8428 data = nla_nest_start(skb, attr);
8429 if (!data)
8430 goto nla_put_failure;
8431
8432 ((void **)skb->cb)[0] = rdev;
8433 ((void **)skb->cb)[1] = hdr;
8434 ((void **)skb->cb)[2] = data;
8435
8436 return skb;
8437
8438 nla_put_failure:
8439 kfree_skb(skb);
8440 return NULL;
8441 }
8442
8443 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8444 struct wireless_dev *wdev,
8445 enum nl80211_commands cmd,
8446 enum nl80211_attrs attr,
8447 int vendor_event_idx,
8448 int approxlen, gfp_t gfp)
8449 {
8450 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8451 const struct nl80211_vendor_cmd_info *info;
8452
8453 switch (cmd) {
8454 case NL80211_CMD_TESTMODE:
8455 if (WARN_ON(vendor_event_idx != -1))
8456 return NULL;
8457 info = NULL;
8458 break;
8459 case NL80211_CMD_VENDOR:
8460 if (WARN_ON(vendor_event_idx < 0 ||
8461 vendor_event_idx >= wiphy->n_vendor_events))
8462 return NULL;
8463 info = &wiphy->vendor_events[vendor_event_idx];
8464 break;
8465 default:
8466 WARN_ON(1);
8467 return NULL;
8468 }
8469
8470 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8471 cmd, attr, info, gfp);
8472 }
8473 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8474
8475 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8476 {
8477 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8478 void *hdr = ((void **)skb->cb)[1];
8479 struct nlattr *data = ((void **)skb->cb)[2];
8480 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8481
8482 /* clear CB data for netlink core to own from now on */
8483 memset(skb->cb, 0, sizeof(skb->cb));
8484
8485 nla_nest_end(skb, data);
8486 genlmsg_end(skb, hdr);
8487
8488 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8489 mcgrp = NL80211_MCGRP_VENDOR;
8490
8491 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8492 mcgrp, gfp);
8493 }
8494 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8495
8496 #ifdef CONFIG_NL80211_TESTMODE
8497 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8498 {
8499 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8500 struct wireless_dev *wdev =
8501 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8502 int err;
8503
8504 if (!rdev->ops->testmode_cmd)
8505 return -EOPNOTSUPP;
8506
8507 if (IS_ERR(wdev)) {
8508 err = PTR_ERR(wdev);
8509 if (err != -EINVAL)
8510 return err;
8511 wdev = NULL;
8512 } else if (wdev->wiphy != &rdev->wiphy) {
8513 return -EINVAL;
8514 }
8515
8516 if (!info->attrs[NL80211_ATTR_TESTDATA])
8517 return -EINVAL;
8518
8519 rdev->cur_cmd_info = info;
8520 err = rdev_testmode_cmd(rdev, wdev,
8521 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8522 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8523 rdev->cur_cmd_info = NULL;
8524
8525 return err;
8526 }
8527
8528 static int nl80211_testmode_dump(struct sk_buff *skb,
8529 struct netlink_callback *cb)
8530 {
8531 struct cfg80211_registered_device *rdev;
8532 int err;
8533 long phy_idx;
8534 void *data = NULL;
8535 int data_len = 0;
8536
8537 rtnl_lock();
8538
8539 if (cb->args[0]) {
8540 /*
8541 * 0 is a valid index, but not valid for args[0],
8542 * so we need to offset by 1.
8543 */
8544 phy_idx = cb->args[0] - 1;
8545 } else {
8546 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8547
8548 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8549 attrbuf, nl80211_fam.maxattr, nl80211_policy);
8550 if (err)
8551 goto out_err;
8552
8553 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8554 if (IS_ERR(rdev)) {
8555 err = PTR_ERR(rdev);
8556 goto out_err;
8557 }
8558 phy_idx = rdev->wiphy_idx;
8559 rdev = NULL;
8560
8561 if (attrbuf[NL80211_ATTR_TESTDATA])
8562 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8563 }
8564
8565 if (cb->args[1]) {
8566 data = nla_data((void *)cb->args[1]);
8567 data_len = nla_len((void *)cb->args[1]);
8568 }
8569
8570 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8571 if (!rdev) {
8572 err = -ENOENT;
8573 goto out_err;
8574 }
8575
8576 if (!rdev->ops->testmode_dump) {
8577 err = -EOPNOTSUPP;
8578 goto out_err;
8579 }
8580
8581 while (1) {
8582 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8583 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8584 NL80211_CMD_TESTMODE);
8585 struct nlattr *tmdata;
8586
8587 if (!hdr)
8588 break;
8589
8590 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8591 genlmsg_cancel(skb, hdr);
8592 break;
8593 }
8594
8595 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8596 if (!tmdata) {
8597 genlmsg_cancel(skb, hdr);
8598 break;
8599 }
8600 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8601 nla_nest_end(skb, tmdata);
8602
8603 if (err == -ENOBUFS || err == -ENOENT) {
8604 genlmsg_cancel(skb, hdr);
8605 break;
8606 } else if (err) {
8607 genlmsg_cancel(skb, hdr);
8608 goto out_err;
8609 }
8610
8611 genlmsg_end(skb, hdr);
8612 }
8613
8614 err = skb->len;
8615 /* see above */
8616 cb->args[0] = phy_idx + 1;
8617 out_err:
8618 rtnl_unlock();
8619 return err;
8620 }
8621 #endif
8622
8623 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8624 {
8625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8626 struct net_device *dev = info->user_ptr[1];
8627 struct cfg80211_connect_params connect;
8628 struct wiphy *wiphy;
8629 struct cfg80211_cached_keys *connkeys = NULL;
8630 int err;
8631
8632 memset(&connect, 0, sizeof(connect));
8633
8634 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8635 return -EINVAL;
8636
8637 if (!info->attrs[NL80211_ATTR_SSID] ||
8638 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8639 return -EINVAL;
8640
8641 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8642 connect.auth_type =
8643 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8644 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8645 NL80211_CMD_CONNECT))
8646 return -EINVAL;
8647 } else
8648 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8649
8650 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8651
8652 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8653 NL80211_MAX_NR_CIPHER_SUITES);
8654 if (err)
8655 return err;
8656
8657 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8658 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8659 return -EOPNOTSUPP;
8660
8661 wiphy = &rdev->wiphy;
8662
8663 connect.bg_scan_period = -1;
8664 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8665 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8666 connect.bg_scan_period =
8667 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8668 }
8669
8670 if (info->attrs[NL80211_ATTR_MAC])
8671 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8672 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8673 connect.bssid_hint =
8674 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8675 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8676 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8677
8678 if (info->attrs[NL80211_ATTR_IE]) {
8679 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8680 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8681 }
8682
8683 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8684 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8685 if (connect.mfp != NL80211_MFP_REQUIRED &&
8686 connect.mfp != NL80211_MFP_NO)
8687 return -EINVAL;
8688 } else {
8689 connect.mfp = NL80211_MFP_NO;
8690 }
8691
8692 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8693 connect.prev_bssid =
8694 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8695
8696 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8697 connect.channel = nl80211_get_valid_chan(
8698 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8699 if (!connect.channel)
8700 return -EINVAL;
8701 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8702 connect.channel_hint = nl80211_get_valid_chan(
8703 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8704 if (!connect.channel_hint)
8705 return -EINVAL;
8706 }
8707
8708 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8709 connkeys = nl80211_parse_connkeys(rdev,
8710 info->attrs[NL80211_ATTR_KEYS], NULL);
8711 if (IS_ERR(connkeys))
8712 return PTR_ERR(connkeys);
8713 }
8714
8715 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8716 connect.flags |= ASSOC_REQ_DISABLE_HT;
8717
8718 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8719 memcpy(&connect.ht_capa_mask,
8720 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8721 sizeof(connect.ht_capa_mask));
8722
8723 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8724 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8725 kzfree(connkeys);
8726 return -EINVAL;
8727 }
8728 memcpy(&connect.ht_capa,
8729 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8730 sizeof(connect.ht_capa));
8731 }
8732
8733 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8734 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8735
8736 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8737 memcpy(&connect.vht_capa_mask,
8738 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8739 sizeof(connect.vht_capa_mask));
8740
8741 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8742 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8743 kzfree(connkeys);
8744 return -EINVAL;
8745 }
8746 memcpy(&connect.vht_capa,
8747 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8748 sizeof(connect.vht_capa));
8749 }
8750
8751 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8752 if (!((rdev->wiphy.features &
8753 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8754 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8755 !wiphy_ext_feature_isset(&rdev->wiphy,
8756 NL80211_EXT_FEATURE_RRM)) {
8757 kzfree(connkeys);
8758 return -EINVAL;
8759 }
8760 connect.flags |= ASSOC_REQ_USE_RRM;
8761 }
8762
8763 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8764 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8765 kzfree(connkeys);
8766 return -EOPNOTSUPP;
8767 }
8768
8769 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8770 /* bss selection makes no sense if bssid is set */
8771 if (connect.bssid) {
8772 kzfree(connkeys);
8773 return -EINVAL;
8774 }
8775
8776 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8777 wiphy, &connect.bss_select);
8778 if (err) {
8779 kzfree(connkeys);
8780 return err;
8781 }
8782 }
8783
8784 wdev_lock(dev->ieee80211_ptr);
8785 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8786 connect.prev_bssid);
8787 wdev_unlock(dev->ieee80211_ptr);
8788 if (err)
8789 kzfree(connkeys);
8790 return err;
8791 }
8792
8793 static int nl80211_update_connect_params(struct sk_buff *skb,
8794 struct genl_info *info)
8795 {
8796 struct cfg80211_connect_params connect = {};
8797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8798 struct net_device *dev = info->user_ptr[1];
8799 struct wireless_dev *wdev = dev->ieee80211_ptr;
8800 u32 changed = 0;
8801 int ret;
8802
8803 if (!rdev->ops->update_connect_params)
8804 return -EOPNOTSUPP;
8805
8806 if (info->attrs[NL80211_ATTR_IE]) {
8807 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8808 return -EINVAL;
8809 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8810 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8811 changed |= UPDATE_ASSOC_IES;
8812 }
8813
8814 wdev_lock(dev->ieee80211_ptr);
8815 if (!wdev->current_bss)
8816 ret = -ENOLINK;
8817 else
8818 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8819 wdev_unlock(dev->ieee80211_ptr);
8820
8821 return ret;
8822 }
8823
8824 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8825 {
8826 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8827 struct net_device *dev = info->user_ptr[1];
8828 u16 reason;
8829 int ret;
8830
8831 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8832 reason = WLAN_REASON_DEAUTH_LEAVING;
8833 else
8834 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8835
8836 if (reason == 0)
8837 return -EINVAL;
8838
8839 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8840 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8841 return -EOPNOTSUPP;
8842
8843 wdev_lock(dev->ieee80211_ptr);
8844 ret = cfg80211_disconnect(rdev, dev, reason, true);
8845 wdev_unlock(dev->ieee80211_ptr);
8846 return ret;
8847 }
8848
8849 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8850 {
8851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8852 struct net *net;
8853 int err;
8854
8855 if (info->attrs[NL80211_ATTR_PID]) {
8856 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8857
8858 net = get_net_ns_by_pid(pid);
8859 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8860 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8861
8862 net = get_net_ns_by_fd(fd);
8863 } else {
8864 return -EINVAL;
8865 }
8866
8867 if (IS_ERR(net))
8868 return PTR_ERR(net);
8869
8870 err = 0;
8871
8872 /* check if anything to do */
8873 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8874 err = cfg80211_switch_netns(rdev, net);
8875
8876 put_net(net);
8877 return err;
8878 }
8879
8880 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8881 {
8882 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8883 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8884 struct cfg80211_pmksa *pmksa) = NULL;
8885 struct net_device *dev = info->user_ptr[1];
8886 struct cfg80211_pmksa pmksa;
8887
8888 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8889
8890 if (!info->attrs[NL80211_ATTR_MAC])
8891 return -EINVAL;
8892
8893 if (!info->attrs[NL80211_ATTR_PMKID])
8894 return -EINVAL;
8895
8896 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8897 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8898
8899 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8900 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8901 return -EOPNOTSUPP;
8902
8903 switch (info->genlhdr->cmd) {
8904 case NL80211_CMD_SET_PMKSA:
8905 rdev_ops = rdev->ops->set_pmksa;
8906 break;
8907 case NL80211_CMD_DEL_PMKSA:
8908 rdev_ops = rdev->ops->del_pmksa;
8909 break;
8910 default:
8911 WARN_ON(1);
8912 break;
8913 }
8914
8915 if (!rdev_ops)
8916 return -EOPNOTSUPP;
8917
8918 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8919 }
8920
8921 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8922 {
8923 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8924 struct net_device *dev = info->user_ptr[1];
8925
8926 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8927 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8928 return -EOPNOTSUPP;
8929
8930 if (!rdev->ops->flush_pmksa)
8931 return -EOPNOTSUPP;
8932
8933 return rdev_flush_pmksa(rdev, dev);
8934 }
8935
8936 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8937 {
8938 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8939 struct net_device *dev = info->user_ptr[1];
8940 u8 action_code, dialog_token;
8941 u32 peer_capability = 0;
8942 u16 status_code;
8943 u8 *peer;
8944 bool initiator;
8945
8946 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8947 !rdev->ops->tdls_mgmt)
8948 return -EOPNOTSUPP;
8949
8950 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8951 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8952 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8953 !info->attrs[NL80211_ATTR_IE] ||
8954 !info->attrs[NL80211_ATTR_MAC])
8955 return -EINVAL;
8956
8957 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8958 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8959 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8960 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8961 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8962 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8963 peer_capability =
8964 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8965
8966 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8967 dialog_token, status_code, peer_capability,
8968 initiator,
8969 nla_data(info->attrs[NL80211_ATTR_IE]),
8970 nla_len(info->attrs[NL80211_ATTR_IE]));
8971 }
8972
8973 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8974 {
8975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8976 struct net_device *dev = info->user_ptr[1];
8977 enum nl80211_tdls_operation operation;
8978 u8 *peer;
8979
8980 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8981 !rdev->ops->tdls_oper)
8982 return -EOPNOTSUPP;
8983
8984 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8985 !info->attrs[NL80211_ATTR_MAC])
8986 return -EINVAL;
8987
8988 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8989 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8990
8991 return rdev_tdls_oper(rdev, dev, peer, operation);
8992 }
8993
8994 static int nl80211_remain_on_channel(struct sk_buff *skb,
8995 struct genl_info *info)
8996 {
8997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8998 struct wireless_dev *wdev = info->user_ptr[1];
8999 struct cfg80211_chan_def chandef;
9000 struct sk_buff *msg;
9001 void *hdr;
9002 u64 cookie;
9003 u32 duration;
9004 int err;
9005
9006 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9007 !info->attrs[NL80211_ATTR_DURATION])
9008 return -EINVAL;
9009
9010 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9011
9012 if (!rdev->ops->remain_on_channel ||
9013 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9014 return -EOPNOTSUPP;
9015
9016 /*
9017 * We should be on that channel for at least a minimum amount of
9018 * time (10ms) but no longer than the driver supports.
9019 */
9020 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9021 duration > rdev->wiphy.max_remain_on_channel_duration)
9022 return -EINVAL;
9023
9024 err = nl80211_parse_chandef(rdev, info, &chandef);
9025 if (err)
9026 return err;
9027
9028 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9029 if (!msg)
9030 return -ENOMEM;
9031
9032 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9033 NL80211_CMD_REMAIN_ON_CHANNEL);
9034 if (!hdr) {
9035 err = -ENOBUFS;
9036 goto free_msg;
9037 }
9038
9039 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9040 duration, &cookie);
9041
9042 if (err)
9043 goto free_msg;
9044
9045 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9046 NL80211_ATTR_PAD))
9047 goto nla_put_failure;
9048
9049 genlmsg_end(msg, hdr);
9050
9051 return genlmsg_reply(msg, info);
9052
9053 nla_put_failure:
9054 err = -ENOBUFS;
9055 free_msg:
9056 nlmsg_free(msg);
9057 return err;
9058 }
9059
9060 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9061 struct genl_info *info)
9062 {
9063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9064 struct wireless_dev *wdev = info->user_ptr[1];
9065 u64 cookie;
9066
9067 if (!info->attrs[NL80211_ATTR_COOKIE])
9068 return -EINVAL;
9069
9070 if (!rdev->ops->cancel_remain_on_channel)
9071 return -EOPNOTSUPP;
9072
9073 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9074
9075 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9076 }
9077
9078 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9079 struct genl_info *info)
9080 {
9081 struct cfg80211_bitrate_mask mask;
9082 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9083 struct net_device *dev = info->user_ptr[1];
9084 int err;
9085
9086 if (!rdev->ops->set_bitrate_mask)
9087 return -EOPNOTSUPP;
9088
9089 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9090 if (err)
9091 return err;
9092
9093 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9094 }
9095
9096 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9097 {
9098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9099 struct wireless_dev *wdev = info->user_ptr[1];
9100 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9101
9102 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9103 return -EINVAL;
9104
9105 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9106 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9107
9108 switch (wdev->iftype) {
9109 case NL80211_IFTYPE_STATION:
9110 case NL80211_IFTYPE_ADHOC:
9111 case NL80211_IFTYPE_P2P_CLIENT:
9112 case NL80211_IFTYPE_AP:
9113 case NL80211_IFTYPE_AP_VLAN:
9114 case NL80211_IFTYPE_MESH_POINT:
9115 case NL80211_IFTYPE_P2P_GO:
9116 case NL80211_IFTYPE_P2P_DEVICE:
9117 break;
9118 case NL80211_IFTYPE_NAN:
9119 default:
9120 return -EOPNOTSUPP;
9121 }
9122
9123 /* not much point in registering if we can't reply */
9124 if (!rdev->ops->mgmt_tx)
9125 return -EOPNOTSUPP;
9126
9127 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9128 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9129 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9130 }
9131
9132 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9133 {
9134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9135 struct wireless_dev *wdev = info->user_ptr[1];
9136 struct cfg80211_chan_def chandef;
9137 int err;
9138 void *hdr = NULL;
9139 u64 cookie;
9140 struct sk_buff *msg = NULL;
9141 struct cfg80211_mgmt_tx_params params = {
9142 .dont_wait_for_ack =
9143 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9144 };
9145
9146 if (!info->attrs[NL80211_ATTR_FRAME])
9147 return -EINVAL;
9148
9149 if (!rdev->ops->mgmt_tx)
9150 return -EOPNOTSUPP;
9151
9152 switch (wdev->iftype) {
9153 case NL80211_IFTYPE_P2P_DEVICE:
9154 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9155 return -EINVAL;
9156 case NL80211_IFTYPE_STATION:
9157 case NL80211_IFTYPE_ADHOC:
9158 case NL80211_IFTYPE_P2P_CLIENT:
9159 case NL80211_IFTYPE_AP:
9160 case NL80211_IFTYPE_AP_VLAN:
9161 case NL80211_IFTYPE_MESH_POINT:
9162 case NL80211_IFTYPE_P2P_GO:
9163 break;
9164 case NL80211_IFTYPE_NAN:
9165 default:
9166 return -EOPNOTSUPP;
9167 }
9168
9169 if (info->attrs[NL80211_ATTR_DURATION]) {
9170 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9171 return -EINVAL;
9172 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9173
9174 /*
9175 * We should wait on the channel for at least a minimum amount
9176 * of time (10ms) but no longer than the driver supports.
9177 */
9178 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9179 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9180 return -EINVAL;
9181 }
9182
9183 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9184
9185 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9186 return -EINVAL;
9187
9188 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9189
9190 /* get the channel if any has been specified, otherwise pass NULL to
9191 * the driver. The latter will use the current one
9192 */
9193 chandef.chan = NULL;
9194 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9195 err = nl80211_parse_chandef(rdev, info, &chandef);
9196 if (err)
9197 return err;
9198 }
9199
9200 if (!chandef.chan && params.offchan)
9201 return -EINVAL;
9202
9203 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9204 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9205
9206 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9207 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9208 int i;
9209
9210 if (len % sizeof(u16))
9211 return -EINVAL;
9212
9213 params.n_csa_offsets = len / sizeof(u16);
9214 params.csa_offsets =
9215 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9216
9217 /* check that all the offsets fit the frame */
9218 for (i = 0; i < params.n_csa_offsets; i++) {
9219 if (params.csa_offsets[i] >= params.len)
9220 return -EINVAL;
9221 }
9222 }
9223
9224 if (!params.dont_wait_for_ack) {
9225 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9226 if (!msg)
9227 return -ENOMEM;
9228
9229 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9230 NL80211_CMD_FRAME);
9231 if (!hdr) {
9232 err = -ENOBUFS;
9233 goto free_msg;
9234 }
9235 }
9236
9237 params.chan = chandef.chan;
9238 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9239 if (err)
9240 goto free_msg;
9241
9242 if (msg) {
9243 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9244 NL80211_ATTR_PAD))
9245 goto nla_put_failure;
9246
9247 genlmsg_end(msg, hdr);
9248 return genlmsg_reply(msg, info);
9249 }
9250
9251 return 0;
9252
9253 nla_put_failure:
9254 err = -ENOBUFS;
9255 free_msg:
9256 nlmsg_free(msg);
9257 return err;
9258 }
9259
9260 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9261 {
9262 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9263 struct wireless_dev *wdev = info->user_ptr[1];
9264 u64 cookie;
9265
9266 if (!info->attrs[NL80211_ATTR_COOKIE])
9267 return -EINVAL;
9268
9269 if (!rdev->ops->mgmt_tx_cancel_wait)
9270 return -EOPNOTSUPP;
9271
9272 switch (wdev->iftype) {
9273 case NL80211_IFTYPE_STATION:
9274 case NL80211_IFTYPE_ADHOC:
9275 case NL80211_IFTYPE_P2P_CLIENT:
9276 case NL80211_IFTYPE_AP:
9277 case NL80211_IFTYPE_AP_VLAN:
9278 case NL80211_IFTYPE_P2P_GO:
9279 case NL80211_IFTYPE_P2P_DEVICE:
9280 break;
9281 case NL80211_IFTYPE_NAN:
9282 default:
9283 return -EOPNOTSUPP;
9284 }
9285
9286 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9287
9288 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9289 }
9290
9291 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9292 {
9293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9294 struct wireless_dev *wdev;
9295 struct net_device *dev = info->user_ptr[1];
9296 u8 ps_state;
9297 bool state;
9298 int err;
9299
9300 if (!info->attrs[NL80211_ATTR_PS_STATE])
9301 return -EINVAL;
9302
9303 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9304
9305 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9306 return -EINVAL;
9307
9308 wdev = dev->ieee80211_ptr;
9309
9310 if (!rdev->ops->set_power_mgmt)
9311 return -EOPNOTSUPP;
9312
9313 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9314
9315 if (state == wdev->ps)
9316 return 0;
9317
9318 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9319 if (!err)
9320 wdev->ps = state;
9321 return err;
9322 }
9323
9324 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9325 {
9326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9327 enum nl80211_ps_state ps_state;
9328 struct wireless_dev *wdev;
9329 struct net_device *dev = info->user_ptr[1];
9330 struct sk_buff *msg;
9331 void *hdr;
9332 int err;
9333
9334 wdev = dev->ieee80211_ptr;
9335
9336 if (!rdev->ops->set_power_mgmt)
9337 return -EOPNOTSUPP;
9338
9339 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9340 if (!msg)
9341 return -ENOMEM;
9342
9343 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9344 NL80211_CMD_GET_POWER_SAVE);
9345 if (!hdr) {
9346 err = -ENOBUFS;
9347 goto free_msg;
9348 }
9349
9350 if (wdev->ps)
9351 ps_state = NL80211_PS_ENABLED;
9352 else
9353 ps_state = NL80211_PS_DISABLED;
9354
9355 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9356 goto nla_put_failure;
9357
9358 genlmsg_end(msg, hdr);
9359 return genlmsg_reply(msg, info);
9360
9361 nla_put_failure:
9362 err = -ENOBUFS;
9363 free_msg:
9364 nlmsg_free(msg);
9365 return err;
9366 }
9367
9368 static const struct nla_policy
9369 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9370 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9371 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9372 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9373 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9374 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9375 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9376 };
9377
9378 static int nl80211_set_cqm_txe(struct genl_info *info,
9379 u32 rate, u32 pkts, u32 intvl)
9380 {
9381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9382 struct net_device *dev = info->user_ptr[1];
9383 struct wireless_dev *wdev = dev->ieee80211_ptr;
9384
9385 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9386 return -EINVAL;
9387
9388 if (!rdev->ops->set_cqm_txe_config)
9389 return -EOPNOTSUPP;
9390
9391 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9392 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9393 return -EOPNOTSUPP;
9394
9395 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9396 }
9397
9398 static int nl80211_set_cqm_rssi(struct genl_info *info,
9399 s32 threshold, u32 hysteresis)
9400 {
9401 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9402 struct net_device *dev = info->user_ptr[1];
9403 struct wireless_dev *wdev = dev->ieee80211_ptr;
9404
9405 if (threshold > 0)
9406 return -EINVAL;
9407
9408 /* disabling - hysteresis should also be zero then */
9409 if (threshold == 0)
9410 hysteresis = 0;
9411
9412 if (!rdev->ops->set_cqm_rssi_config)
9413 return -EOPNOTSUPP;
9414
9415 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9416 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9417 return -EOPNOTSUPP;
9418
9419 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9420 }
9421
9422 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9423 {
9424 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9425 struct nlattr *cqm;
9426 int err;
9427
9428 cqm = info->attrs[NL80211_ATTR_CQM];
9429 if (!cqm)
9430 return -EINVAL;
9431
9432 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9433 nl80211_attr_cqm_policy);
9434 if (err)
9435 return err;
9436
9437 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9438 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9439 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9440 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9441
9442 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9443 }
9444
9445 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9446 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9447 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9448 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9449 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9450 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9451
9452 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9453 }
9454
9455 return -EINVAL;
9456 }
9457
9458 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9459 {
9460 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9461 struct net_device *dev = info->user_ptr[1];
9462 struct ocb_setup setup = {};
9463 int err;
9464
9465 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9466 if (err)
9467 return err;
9468
9469 return cfg80211_join_ocb(rdev, dev, &setup);
9470 }
9471
9472 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9473 {
9474 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9475 struct net_device *dev = info->user_ptr[1];
9476
9477 return cfg80211_leave_ocb(rdev, dev);
9478 }
9479
9480 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9481 {
9482 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9483 struct net_device *dev = info->user_ptr[1];
9484 struct mesh_config cfg;
9485 struct mesh_setup setup;
9486 int err;
9487
9488 /* start with default */
9489 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9490 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9491
9492 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9493 /* and parse parameters if given */
9494 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9495 if (err)
9496 return err;
9497 }
9498
9499 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9500 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9501 return -EINVAL;
9502
9503 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9504 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9505
9506 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9507 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9508 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9509 return -EINVAL;
9510
9511 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9512 setup.beacon_interval =
9513 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9514
9515 err = cfg80211_validate_beacon_int(rdev,
9516 NL80211_IFTYPE_MESH_POINT,
9517 setup.beacon_interval);
9518 if (err)
9519 return err;
9520 }
9521
9522 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9523 setup.dtim_period =
9524 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9525 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9526 return -EINVAL;
9527 }
9528
9529 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9530 /* parse additional setup parameters if given */
9531 err = nl80211_parse_mesh_setup(info, &setup);
9532 if (err)
9533 return err;
9534 }
9535
9536 if (setup.user_mpm)
9537 cfg.auto_open_plinks = false;
9538
9539 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9540 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9541 if (err)
9542 return err;
9543 } else {
9544 /* cfg80211_join_mesh() will sort it out */
9545 setup.chandef.chan = NULL;
9546 }
9547
9548 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9549 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9550 int n_rates =
9551 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9552 struct ieee80211_supported_band *sband;
9553
9554 if (!setup.chandef.chan)
9555 return -EINVAL;
9556
9557 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9558
9559 err = ieee80211_get_ratemask(sband, rates, n_rates,
9560 &setup.basic_rates);
9561 if (err)
9562 return err;
9563 }
9564
9565 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9566 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9567 if (err)
9568 return err;
9569
9570 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9571 &setup.beacon_rate);
9572 if (err)
9573 return err;
9574 }
9575
9576 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9577 }
9578
9579 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9580 {
9581 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9582 struct net_device *dev = info->user_ptr[1];
9583
9584 return cfg80211_leave_mesh(rdev, dev);
9585 }
9586
9587 #ifdef CONFIG_PM
9588 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9589 struct cfg80211_registered_device *rdev)
9590 {
9591 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9592 struct nlattr *nl_pats, *nl_pat;
9593 int i, pat_len;
9594
9595 if (!wowlan->n_patterns)
9596 return 0;
9597
9598 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9599 if (!nl_pats)
9600 return -ENOBUFS;
9601
9602 for (i = 0; i < wowlan->n_patterns; i++) {
9603 nl_pat = nla_nest_start(msg, i + 1);
9604 if (!nl_pat)
9605 return -ENOBUFS;
9606 pat_len = wowlan->patterns[i].pattern_len;
9607 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9608 wowlan->patterns[i].mask) ||
9609 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9610 wowlan->patterns[i].pattern) ||
9611 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9612 wowlan->patterns[i].pkt_offset))
9613 return -ENOBUFS;
9614 nla_nest_end(msg, nl_pat);
9615 }
9616 nla_nest_end(msg, nl_pats);
9617
9618 return 0;
9619 }
9620
9621 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9622 struct cfg80211_wowlan_tcp *tcp)
9623 {
9624 struct nlattr *nl_tcp;
9625
9626 if (!tcp)
9627 return 0;
9628
9629 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9630 if (!nl_tcp)
9631 return -ENOBUFS;
9632
9633 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9634 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9635 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9636 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9637 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9638 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9639 tcp->payload_len, tcp->payload) ||
9640 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9641 tcp->data_interval) ||
9642 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9643 tcp->wake_len, tcp->wake_data) ||
9644 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9645 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9646 return -ENOBUFS;
9647
9648 if (tcp->payload_seq.len &&
9649 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9650 sizeof(tcp->payload_seq), &tcp->payload_seq))
9651 return -ENOBUFS;
9652
9653 if (tcp->payload_tok.len &&
9654 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9655 sizeof(tcp->payload_tok) + tcp->tokens_size,
9656 &tcp->payload_tok))
9657 return -ENOBUFS;
9658
9659 nla_nest_end(msg, nl_tcp);
9660
9661 return 0;
9662 }
9663
9664 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9665 struct cfg80211_sched_scan_request *req)
9666 {
9667 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9668 int i;
9669
9670 if (!req)
9671 return 0;
9672
9673 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9674 if (!nd)
9675 return -ENOBUFS;
9676
9677 if (req->n_scan_plans == 1 &&
9678 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9679 req->scan_plans[0].interval * 1000))
9680 return -ENOBUFS;
9681
9682 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9683 return -ENOBUFS;
9684
9685 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9686 if (!freqs)
9687 return -ENOBUFS;
9688
9689 for (i = 0; i < req->n_channels; i++) {
9690 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9691 return -ENOBUFS;
9692 }
9693
9694 nla_nest_end(msg, freqs);
9695
9696 if (req->n_match_sets) {
9697 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9698 if (!matches)
9699 return -ENOBUFS;
9700
9701 for (i = 0; i < req->n_match_sets; i++) {
9702 match = nla_nest_start(msg, i);
9703 if (!match)
9704 return -ENOBUFS;
9705
9706 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9707 req->match_sets[i].ssid.ssid_len,
9708 req->match_sets[i].ssid.ssid))
9709 return -ENOBUFS;
9710 nla_nest_end(msg, match);
9711 }
9712 nla_nest_end(msg, matches);
9713 }
9714
9715 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9716 if (!scan_plans)
9717 return -ENOBUFS;
9718
9719 for (i = 0; i < req->n_scan_plans; i++) {
9720 scan_plan = nla_nest_start(msg, i + 1);
9721 if (!scan_plan)
9722 return -ENOBUFS;
9723
9724 if (!scan_plan ||
9725 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9726 req->scan_plans[i].interval) ||
9727 (req->scan_plans[i].iterations &&
9728 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9729 req->scan_plans[i].iterations)))
9730 return -ENOBUFS;
9731 nla_nest_end(msg, scan_plan);
9732 }
9733 nla_nest_end(msg, scan_plans);
9734
9735 nla_nest_end(msg, nd);
9736
9737 return 0;
9738 }
9739
9740 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9741 {
9742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9743 struct sk_buff *msg;
9744 void *hdr;
9745 u32 size = NLMSG_DEFAULT_SIZE;
9746
9747 if (!rdev->wiphy.wowlan)
9748 return -EOPNOTSUPP;
9749
9750 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9751 /* adjust size to have room for all the data */
9752 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9753 rdev->wiphy.wowlan_config->tcp->payload_len +
9754 rdev->wiphy.wowlan_config->tcp->wake_len +
9755 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9756 }
9757
9758 msg = nlmsg_new(size, GFP_KERNEL);
9759 if (!msg)
9760 return -ENOMEM;
9761
9762 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9763 NL80211_CMD_GET_WOWLAN);
9764 if (!hdr)
9765 goto nla_put_failure;
9766
9767 if (rdev->wiphy.wowlan_config) {
9768 struct nlattr *nl_wowlan;
9769
9770 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9771 if (!nl_wowlan)
9772 goto nla_put_failure;
9773
9774 if ((rdev->wiphy.wowlan_config->any &&
9775 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9776 (rdev->wiphy.wowlan_config->disconnect &&
9777 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9778 (rdev->wiphy.wowlan_config->magic_pkt &&
9779 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9780 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9781 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9782 (rdev->wiphy.wowlan_config->eap_identity_req &&
9783 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9784 (rdev->wiphy.wowlan_config->four_way_handshake &&
9785 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9786 (rdev->wiphy.wowlan_config->rfkill_release &&
9787 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9788 goto nla_put_failure;
9789
9790 if (nl80211_send_wowlan_patterns(msg, rdev))
9791 goto nla_put_failure;
9792
9793 if (nl80211_send_wowlan_tcp(msg,
9794 rdev->wiphy.wowlan_config->tcp))
9795 goto nla_put_failure;
9796
9797 if (nl80211_send_wowlan_nd(
9798 msg,
9799 rdev->wiphy.wowlan_config->nd_config))
9800 goto nla_put_failure;
9801
9802 nla_nest_end(msg, nl_wowlan);
9803 }
9804
9805 genlmsg_end(msg, hdr);
9806 return genlmsg_reply(msg, info);
9807
9808 nla_put_failure:
9809 nlmsg_free(msg);
9810 return -ENOBUFS;
9811 }
9812
9813 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9814 struct nlattr *attr,
9815 struct cfg80211_wowlan *trig)
9816 {
9817 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9818 struct cfg80211_wowlan_tcp *cfg;
9819 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9820 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9821 u32 size;
9822 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9823 int err, port;
9824
9825 if (!rdev->wiphy.wowlan->tcp)
9826 return -EINVAL;
9827
9828 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9829 nl80211_wowlan_tcp_policy);
9830 if (err)
9831 return err;
9832
9833 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9834 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9835 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9836 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9837 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9838 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9839 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9840 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9841 return -EINVAL;
9842
9843 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9844 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9845 return -EINVAL;
9846
9847 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9848 rdev->wiphy.wowlan->tcp->data_interval_max ||
9849 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9850 return -EINVAL;
9851
9852 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9853 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9854 return -EINVAL;
9855
9856 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9857 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9858 return -EINVAL;
9859
9860 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9861 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9862
9863 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9864 tokens_size = tokln - sizeof(*tok);
9865
9866 if (!tok->len || tokens_size % tok->len)
9867 return -EINVAL;
9868 if (!rdev->wiphy.wowlan->tcp->tok)
9869 return -EINVAL;
9870 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9871 return -EINVAL;
9872 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9873 return -EINVAL;
9874 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9875 return -EINVAL;
9876 if (tok->offset + tok->len > data_size)
9877 return -EINVAL;
9878 }
9879
9880 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9881 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9882 if (!rdev->wiphy.wowlan->tcp->seq)
9883 return -EINVAL;
9884 if (seq->len == 0 || seq->len > 4)
9885 return -EINVAL;
9886 if (seq->len + seq->offset > data_size)
9887 return -EINVAL;
9888 }
9889
9890 size = sizeof(*cfg);
9891 size += data_size;
9892 size += wake_size + wake_mask_size;
9893 size += tokens_size;
9894
9895 cfg = kzalloc(size, GFP_KERNEL);
9896 if (!cfg)
9897 return -ENOMEM;
9898 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9899 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9900 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9901 ETH_ALEN);
9902 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9903 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9904 else
9905 port = 0;
9906 #ifdef CONFIG_INET
9907 /* allocate a socket and port for it and use it */
9908 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9909 IPPROTO_TCP, &cfg->sock, 1);
9910 if (err) {
9911 kfree(cfg);
9912 return err;
9913 }
9914 if (inet_csk_get_port(cfg->sock->sk, port)) {
9915 sock_release(cfg->sock);
9916 kfree(cfg);
9917 return -EADDRINUSE;
9918 }
9919 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9920 #else
9921 if (!port) {
9922 kfree(cfg);
9923 return -EINVAL;
9924 }
9925 cfg->src_port = port;
9926 #endif
9927
9928 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9929 cfg->payload_len = data_size;
9930 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9931 memcpy((void *)cfg->payload,
9932 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9933 data_size);
9934 if (seq)
9935 cfg->payload_seq = *seq;
9936 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9937 cfg->wake_len = wake_size;
9938 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9939 memcpy((void *)cfg->wake_data,
9940 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9941 wake_size);
9942 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9943 data_size + wake_size;
9944 memcpy((void *)cfg->wake_mask,
9945 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9946 wake_mask_size);
9947 if (tok) {
9948 cfg->tokens_size = tokens_size;
9949 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9950 }
9951
9952 trig->tcp = cfg;
9953
9954 return 0;
9955 }
9956
9957 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9958 const struct wiphy_wowlan_support *wowlan,
9959 struct nlattr *attr,
9960 struct cfg80211_wowlan *trig)
9961 {
9962 struct nlattr **tb;
9963 int err;
9964
9965 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9966 if (!tb)
9967 return -ENOMEM;
9968
9969 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9970 err = -EOPNOTSUPP;
9971 goto out;
9972 }
9973
9974 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9975 if (err)
9976 goto out;
9977
9978 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9979 err = PTR_ERR_OR_ZERO(trig->nd_config);
9980 if (err)
9981 trig->nd_config = NULL;
9982
9983 out:
9984 kfree(tb);
9985 return err;
9986 }
9987
9988 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9989 {
9990 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9991 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9992 struct cfg80211_wowlan new_triggers = {};
9993 struct cfg80211_wowlan *ntrig;
9994 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9995 int err, i;
9996 bool prev_enabled = rdev->wiphy.wowlan_config;
9997 bool regular = false;
9998
9999 if (!wowlan)
10000 return -EOPNOTSUPP;
10001
10002 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10003 cfg80211_rdev_free_wowlan(rdev);
10004 rdev->wiphy.wowlan_config = NULL;
10005 goto set_wakeup;
10006 }
10007
10008 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10009 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10010 nl80211_wowlan_policy);
10011 if (err)
10012 return err;
10013
10014 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10015 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10016 return -EINVAL;
10017 new_triggers.any = true;
10018 }
10019
10020 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10021 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10022 return -EINVAL;
10023 new_triggers.disconnect = true;
10024 regular = true;
10025 }
10026
10027 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10028 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10029 return -EINVAL;
10030 new_triggers.magic_pkt = true;
10031 regular = true;
10032 }
10033
10034 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10035 return -EINVAL;
10036
10037 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10038 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10039 return -EINVAL;
10040 new_triggers.gtk_rekey_failure = true;
10041 regular = true;
10042 }
10043
10044 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10045 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10046 return -EINVAL;
10047 new_triggers.eap_identity_req = true;
10048 regular = true;
10049 }
10050
10051 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10052 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10053 return -EINVAL;
10054 new_triggers.four_way_handshake = true;
10055 regular = true;
10056 }
10057
10058 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10059 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10060 return -EINVAL;
10061 new_triggers.rfkill_release = true;
10062 regular = true;
10063 }
10064
10065 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10066 struct nlattr *pat;
10067 int n_patterns = 0;
10068 int rem, pat_len, mask_len, pkt_offset;
10069 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10070
10071 regular = true;
10072
10073 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10074 rem)
10075 n_patterns++;
10076 if (n_patterns > wowlan->n_patterns)
10077 return -EINVAL;
10078
10079 new_triggers.patterns = kcalloc(n_patterns,
10080 sizeof(new_triggers.patterns[0]),
10081 GFP_KERNEL);
10082 if (!new_triggers.patterns)
10083 return -ENOMEM;
10084
10085 new_triggers.n_patterns = n_patterns;
10086 i = 0;
10087
10088 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10089 rem) {
10090 u8 *mask_pat;
10091
10092 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10093 NULL);
10094 err = -EINVAL;
10095 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10096 !pat_tb[NL80211_PKTPAT_PATTERN])
10097 goto error;
10098 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10099 mask_len = DIV_ROUND_UP(pat_len, 8);
10100 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10101 goto error;
10102 if (pat_len > wowlan->pattern_max_len ||
10103 pat_len < wowlan->pattern_min_len)
10104 goto error;
10105
10106 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10107 pkt_offset = 0;
10108 else
10109 pkt_offset = nla_get_u32(
10110 pat_tb[NL80211_PKTPAT_OFFSET]);
10111 if (pkt_offset > wowlan->max_pkt_offset)
10112 goto error;
10113 new_triggers.patterns[i].pkt_offset = pkt_offset;
10114
10115 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10116 if (!mask_pat) {
10117 err = -ENOMEM;
10118 goto error;
10119 }
10120 new_triggers.patterns[i].mask = mask_pat;
10121 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10122 mask_len);
10123 mask_pat += mask_len;
10124 new_triggers.patterns[i].pattern = mask_pat;
10125 new_triggers.patterns[i].pattern_len = pat_len;
10126 memcpy(mask_pat,
10127 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10128 pat_len);
10129 i++;
10130 }
10131 }
10132
10133 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10134 regular = true;
10135 err = nl80211_parse_wowlan_tcp(
10136 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10137 &new_triggers);
10138 if (err)
10139 goto error;
10140 }
10141
10142 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10143 regular = true;
10144 err = nl80211_parse_wowlan_nd(
10145 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10146 &new_triggers);
10147 if (err)
10148 goto error;
10149 }
10150
10151 /* The 'any' trigger means the device continues operating more or less
10152 * as in its normal operation mode and wakes up the host on most of the
10153 * normal interrupts (like packet RX, ...)
10154 * It therefore makes little sense to combine with the more constrained
10155 * wakeup trigger modes.
10156 */
10157 if (new_triggers.any && regular) {
10158 err = -EINVAL;
10159 goto error;
10160 }
10161
10162 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10163 if (!ntrig) {
10164 err = -ENOMEM;
10165 goto error;
10166 }
10167 cfg80211_rdev_free_wowlan(rdev);
10168 rdev->wiphy.wowlan_config = ntrig;
10169
10170 set_wakeup:
10171 if (rdev->ops->set_wakeup &&
10172 prev_enabled != !!rdev->wiphy.wowlan_config)
10173 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10174
10175 return 0;
10176 error:
10177 for (i = 0; i < new_triggers.n_patterns; i++)
10178 kfree(new_triggers.patterns[i].mask);
10179 kfree(new_triggers.patterns);
10180 if (new_triggers.tcp && new_triggers.tcp->sock)
10181 sock_release(new_triggers.tcp->sock);
10182 kfree(new_triggers.tcp);
10183 kfree(new_triggers.nd_config);
10184 return err;
10185 }
10186 #endif
10187
10188 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10189 struct cfg80211_registered_device *rdev)
10190 {
10191 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10192 int i, j, pat_len;
10193 struct cfg80211_coalesce_rules *rule;
10194
10195 if (!rdev->coalesce->n_rules)
10196 return 0;
10197
10198 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10199 if (!nl_rules)
10200 return -ENOBUFS;
10201
10202 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10203 nl_rule = nla_nest_start(msg, i + 1);
10204 if (!nl_rule)
10205 return -ENOBUFS;
10206
10207 rule = &rdev->coalesce->rules[i];
10208 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10209 rule->delay))
10210 return -ENOBUFS;
10211
10212 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10213 rule->condition))
10214 return -ENOBUFS;
10215
10216 nl_pats = nla_nest_start(msg,
10217 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10218 if (!nl_pats)
10219 return -ENOBUFS;
10220
10221 for (j = 0; j < rule->n_patterns; j++) {
10222 nl_pat = nla_nest_start(msg, j + 1);
10223 if (!nl_pat)
10224 return -ENOBUFS;
10225 pat_len = rule->patterns[j].pattern_len;
10226 if (nla_put(msg, NL80211_PKTPAT_MASK,
10227 DIV_ROUND_UP(pat_len, 8),
10228 rule->patterns[j].mask) ||
10229 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10230 rule->patterns[j].pattern) ||
10231 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10232 rule->patterns[j].pkt_offset))
10233 return -ENOBUFS;
10234 nla_nest_end(msg, nl_pat);
10235 }
10236 nla_nest_end(msg, nl_pats);
10237 nla_nest_end(msg, nl_rule);
10238 }
10239 nla_nest_end(msg, nl_rules);
10240
10241 return 0;
10242 }
10243
10244 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10245 {
10246 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10247 struct sk_buff *msg;
10248 void *hdr;
10249
10250 if (!rdev->wiphy.coalesce)
10251 return -EOPNOTSUPP;
10252
10253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10254 if (!msg)
10255 return -ENOMEM;
10256
10257 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10258 NL80211_CMD_GET_COALESCE);
10259 if (!hdr)
10260 goto nla_put_failure;
10261
10262 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10263 goto nla_put_failure;
10264
10265 genlmsg_end(msg, hdr);
10266 return genlmsg_reply(msg, info);
10267
10268 nla_put_failure:
10269 nlmsg_free(msg);
10270 return -ENOBUFS;
10271 }
10272
10273 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10274 {
10275 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10276 int i, j;
10277 struct cfg80211_coalesce_rules *rule;
10278
10279 if (!coalesce)
10280 return;
10281
10282 for (i = 0; i < coalesce->n_rules; i++) {
10283 rule = &coalesce->rules[i];
10284 for (j = 0; j < rule->n_patterns; j++)
10285 kfree(rule->patterns[j].mask);
10286 kfree(rule->patterns);
10287 }
10288 kfree(coalesce->rules);
10289 kfree(coalesce);
10290 rdev->coalesce = NULL;
10291 }
10292
10293 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10294 struct nlattr *rule,
10295 struct cfg80211_coalesce_rules *new_rule)
10296 {
10297 int err, i;
10298 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10299 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10300 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10301 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10302
10303 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10304 nl80211_coalesce_policy);
10305 if (err)
10306 return err;
10307
10308 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10309 new_rule->delay =
10310 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10311 if (new_rule->delay > coalesce->max_delay)
10312 return -EINVAL;
10313
10314 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10315 new_rule->condition =
10316 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10317 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10318 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10319 return -EINVAL;
10320
10321 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10322 return -EINVAL;
10323
10324 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10325 rem)
10326 n_patterns++;
10327 if (n_patterns > coalesce->n_patterns)
10328 return -EINVAL;
10329
10330 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10331 GFP_KERNEL);
10332 if (!new_rule->patterns)
10333 return -ENOMEM;
10334
10335 new_rule->n_patterns = n_patterns;
10336 i = 0;
10337
10338 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10339 rem) {
10340 u8 *mask_pat;
10341
10342 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10343 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10344 !pat_tb[NL80211_PKTPAT_PATTERN])
10345 return -EINVAL;
10346 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10347 mask_len = DIV_ROUND_UP(pat_len, 8);
10348 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10349 return -EINVAL;
10350 if (pat_len > coalesce->pattern_max_len ||
10351 pat_len < coalesce->pattern_min_len)
10352 return -EINVAL;
10353
10354 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10355 pkt_offset = 0;
10356 else
10357 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10358 if (pkt_offset > coalesce->max_pkt_offset)
10359 return -EINVAL;
10360 new_rule->patterns[i].pkt_offset = pkt_offset;
10361
10362 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10363 if (!mask_pat)
10364 return -ENOMEM;
10365
10366 new_rule->patterns[i].mask = mask_pat;
10367 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10368 mask_len);
10369
10370 mask_pat += mask_len;
10371 new_rule->patterns[i].pattern = mask_pat;
10372 new_rule->patterns[i].pattern_len = pat_len;
10373 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10374 pat_len);
10375 i++;
10376 }
10377
10378 return 0;
10379 }
10380
10381 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10382 {
10383 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10384 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10385 struct cfg80211_coalesce new_coalesce = {};
10386 struct cfg80211_coalesce *n_coalesce;
10387 int err, rem_rule, n_rules = 0, i, j;
10388 struct nlattr *rule;
10389 struct cfg80211_coalesce_rules *tmp_rule;
10390
10391 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10392 return -EOPNOTSUPP;
10393
10394 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10395 cfg80211_rdev_free_coalesce(rdev);
10396 rdev_set_coalesce(rdev, NULL);
10397 return 0;
10398 }
10399
10400 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10401 rem_rule)
10402 n_rules++;
10403 if (n_rules > coalesce->n_rules)
10404 return -EINVAL;
10405
10406 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10407 GFP_KERNEL);
10408 if (!new_coalesce.rules)
10409 return -ENOMEM;
10410
10411 new_coalesce.n_rules = n_rules;
10412 i = 0;
10413
10414 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10415 rem_rule) {
10416 err = nl80211_parse_coalesce_rule(rdev, rule,
10417 &new_coalesce.rules[i]);
10418 if (err)
10419 goto error;
10420
10421 i++;
10422 }
10423
10424 err = rdev_set_coalesce(rdev, &new_coalesce);
10425 if (err)
10426 goto error;
10427
10428 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10429 if (!n_coalesce) {
10430 err = -ENOMEM;
10431 goto error;
10432 }
10433 cfg80211_rdev_free_coalesce(rdev);
10434 rdev->coalesce = n_coalesce;
10435
10436 return 0;
10437 error:
10438 for (i = 0; i < new_coalesce.n_rules; i++) {
10439 tmp_rule = &new_coalesce.rules[i];
10440 for (j = 0; j < tmp_rule->n_patterns; j++)
10441 kfree(tmp_rule->patterns[j].mask);
10442 kfree(tmp_rule->patterns);
10443 }
10444 kfree(new_coalesce.rules);
10445
10446 return err;
10447 }
10448
10449 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10450 {
10451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10452 struct net_device *dev = info->user_ptr[1];
10453 struct wireless_dev *wdev = dev->ieee80211_ptr;
10454 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10455 struct cfg80211_gtk_rekey_data rekey_data;
10456 int err;
10457
10458 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10459 return -EINVAL;
10460
10461 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10462 info->attrs[NL80211_ATTR_REKEY_DATA],
10463 nl80211_rekey_policy);
10464 if (err)
10465 return err;
10466
10467 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10468 return -ERANGE;
10469 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10470 return -ERANGE;
10471 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10472 return -ERANGE;
10473
10474 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10475 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10476 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10477
10478 wdev_lock(wdev);
10479 if (!wdev->current_bss) {
10480 err = -ENOTCONN;
10481 goto out;
10482 }
10483
10484 if (!rdev->ops->set_rekey_data) {
10485 err = -EOPNOTSUPP;
10486 goto out;
10487 }
10488
10489 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10490 out:
10491 wdev_unlock(wdev);
10492 return err;
10493 }
10494
10495 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10496 struct genl_info *info)
10497 {
10498 struct net_device *dev = info->user_ptr[1];
10499 struct wireless_dev *wdev = dev->ieee80211_ptr;
10500
10501 if (wdev->iftype != NL80211_IFTYPE_AP &&
10502 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10503 return -EINVAL;
10504
10505 if (wdev->ap_unexpected_nlportid)
10506 return -EBUSY;
10507
10508 wdev->ap_unexpected_nlportid = info->snd_portid;
10509 return 0;
10510 }
10511
10512 static int nl80211_probe_client(struct sk_buff *skb,
10513 struct genl_info *info)
10514 {
10515 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10516 struct net_device *dev = info->user_ptr[1];
10517 struct wireless_dev *wdev = dev->ieee80211_ptr;
10518 struct sk_buff *msg;
10519 void *hdr;
10520 const u8 *addr;
10521 u64 cookie;
10522 int err;
10523
10524 if (wdev->iftype != NL80211_IFTYPE_AP &&
10525 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10526 return -EOPNOTSUPP;
10527
10528 if (!info->attrs[NL80211_ATTR_MAC])
10529 return -EINVAL;
10530
10531 if (!rdev->ops->probe_client)
10532 return -EOPNOTSUPP;
10533
10534 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10535 if (!msg)
10536 return -ENOMEM;
10537
10538 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10539 NL80211_CMD_PROBE_CLIENT);
10540 if (!hdr) {
10541 err = -ENOBUFS;
10542 goto free_msg;
10543 }
10544
10545 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10546
10547 err = rdev_probe_client(rdev, dev, addr, &cookie);
10548 if (err)
10549 goto free_msg;
10550
10551 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10552 NL80211_ATTR_PAD))
10553 goto nla_put_failure;
10554
10555 genlmsg_end(msg, hdr);
10556
10557 return genlmsg_reply(msg, info);
10558
10559 nla_put_failure:
10560 err = -ENOBUFS;
10561 free_msg:
10562 nlmsg_free(msg);
10563 return err;
10564 }
10565
10566 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10567 {
10568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10569 struct cfg80211_beacon_registration *reg, *nreg;
10570 int rv;
10571
10572 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10573 return -EOPNOTSUPP;
10574
10575 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10576 if (!nreg)
10577 return -ENOMEM;
10578
10579 /* First, check if already registered. */
10580 spin_lock_bh(&rdev->beacon_registrations_lock);
10581 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10582 if (reg->nlportid == info->snd_portid) {
10583 rv = -EALREADY;
10584 goto out_err;
10585 }
10586 }
10587 /* Add it to the list */
10588 nreg->nlportid = info->snd_portid;
10589 list_add(&nreg->list, &rdev->beacon_registrations);
10590
10591 spin_unlock_bh(&rdev->beacon_registrations_lock);
10592
10593 return 0;
10594 out_err:
10595 spin_unlock_bh(&rdev->beacon_registrations_lock);
10596 kfree(nreg);
10597 return rv;
10598 }
10599
10600 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10601 {
10602 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10603 struct wireless_dev *wdev = info->user_ptr[1];
10604 int err;
10605
10606 if (!rdev->ops->start_p2p_device)
10607 return -EOPNOTSUPP;
10608
10609 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10610 return -EOPNOTSUPP;
10611
10612 if (wdev_running(wdev))
10613 return 0;
10614
10615 if (rfkill_blocked(rdev->rfkill))
10616 return -ERFKILL;
10617
10618 err = rdev_start_p2p_device(rdev, wdev);
10619 if (err)
10620 return err;
10621
10622 wdev->is_running = true;
10623 rdev->opencount++;
10624
10625 return 0;
10626 }
10627
10628 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10629 {
10630 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10631 struct wireless_dev *wdev = info->user_ptr[1];
10632
10633 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10634 return -EOPNOTSUPP;
10635
10636 if (!rdev->ops->stop_p2p_device)
10637 return -EOPNOTSUPP;
10638
10639 cfg80211_stop_p2p_device(rdev, wdev);
10640
10641 return 0;
10642 }
10643
10644 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10645 {
10646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10647 struct wireless_dev *wdev = info->user_ptr[1];
10648 struct cfg80211_nan_conf conf = {};
10649 int err;
10650
10651 if (wdev->iftype != NL80211_IFTYPE_NAN)
10652 return -EOPNOTSUPP;
10653
10654 if (wdev_running(wdev))
10655 return -EEXIST;
10656
10657 if (rfkill_blocked(rdev->rfkill))
10658 return -ERFKILL;
10659
10660 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10661 return -EINVAL;
10662
10663 if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10664 return -EINVAL;
10665
10666 conf.master_pref =
10667 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10668 if (!conf.master_pref)
10669 return -EINVAL;
10670
10671 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10672
10673 err = rdev_start_nan(rdev, wdev, &conf);
10674 if (err)
10675 return err;
10676
10677 wdev->is_running = true;
10678 rdev->opencount++;
10679
10680 return 0;
10681 }
10682
10683 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10684 {
10685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10686 struct wireless_dev *wdev = info->user_ptr[1];
10687
10688 if (wdev->iftype != NL80211_IFTYPE_NAN)
10689 return -EOPNOTSUPP;
10690
10691 cfg80211_stop_nan(rdev, wdev);
10692
10693 return 0;
10694 }
10695
10696 static int validate_nan_filter(struct nlattr *filter_attr)
10697 {
10698 struct nlattr *attr;
10699 int len = 0, n_entries = 0, rem;
10700
10701 nla_for_each_nested(attr, filter_attr, rem) {
10702 len += nla_len(attr);
10703 n_entries++;
10704 }
10705
10706 if (len >= U8_MAX)
10707 return -EINVAL;
10708
10709 return n_entries;
10710 }
10711
10712 static int handle_nan_filter(struct nlattr *attr_filter,
10713 struct cfg80211_nan_func *func,
10714 bool tx)
10715 {
10716 struct nlattr *attr;
10717 int n_entries, rem, i;
10718 struct cfg80211_nan_func_filter *filter;
10719
10720 n_entries = validate_nan_filter(attr_filter);
10721 if (n_entries < 0)
10722 return n_entries;
10723
10724 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10725
10726 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10727 if (!filter)
10728 return -ENOMEM;
10729
10730 i = 0;
10731 nla_for_each_nested(attr, attr_filter, rem) {
10732 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10733 filter[i].len = nla_len(attr);
10734 i++;
10735 }
10736 if (tx) {
10737 func->num_tx_filters = n_entries;
10738 func->tx_filters = filter;
10739 } else {
10740 func->num_rx_filters = n_entries;
10741 func->rx_filters = filter;
10742 }
10743
10744 return 0;
10745 }
10746
10747 static int nl80211_nan_add_func(struct sk_buff *skb,
10748 struct genl_info *info)
10749 {
10750 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10751 struct wireless_dev *wdev = info->user_ptr[1];
10752 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10753 struct cfg80211_nan_func *func;
10754 struct sk_buff *msg = NULL;
10755 void *hdr = NULL;
10756 int err = 0;
10757
10758 if (wdev->iftype != NL80211_IFTYPE_NAN)
10759 return -EOPNOTSUPP;
10760
10761 if (!wdev_running(wdev))
10762 return -ENOTCONN;
10763
10764 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10765 return -EINVAL;
10766
10767 if (wdev->owner_nlportid &&
10768 wdev->owner_nlportid != info->snd_portid)
10769 return -ENOTCONN;
10770
10771 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10772 info->attrs[NL80211_ATTR_NAN_FUNC],
10773 nl80211_nan_func_policy);
10774 if (err)
10775 return err;
10776
10777 func = kzalloc(sizeof(*func), GFP_KERNEL);
10778 if (!func)
10779 return -ENOMEM;
10780
10781 func->cookie = wdev->wiphy->cookie_counter++;
10782
10783 if (!tb[NL80211_NAN_FUNC_TYPE] ||
10784 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10785 err = -EINVAL;
10786 goto out;
10787 }
10788
10789
10790 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10791
10792 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10793 err = -EINVAL;
10794 goto out;
10795 }
10796
10797 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10798 sizeof(func->service_id));
10799
10800 func->close_range =
10801 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10802
10803 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10804 func->serv_spec_info_len =
10805 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10806 func->serv_spec_info =
10807 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10808 func->serv_spec_info_len,
10809 GFP_KERNEL);
10810 if (!func->serv_spec_info) {
10811 err = -ENOMEM;
10812 goto out;
10813 }
10814 }
10815
10816 if (tb[NL80211_NAN_FUNC_TTL])
10817 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10818
10819 switch (func->type) {
10820 case NL80211_NAN_FUNC_PUBLISH:
10821 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10822 err = -EINVAL;
10823 goto out;
10824 }
10825
10826 func->publish_type =
10827 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10828 func->publish_bcast =
10829 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10830
10831 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10832 func->publish_bcast) {
10833 err = -EINVAL;
10834 goto out;
10835 }
10836 break;
10837 case NL80211_NAN_FUNC_SUBSCRIBE:
10838 func->subscribe_active =
10839 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10840 break;
10841 case NL80211_NAN_FUNC_FOLLOW_UP:
10842 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10843 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10844 err = -EINVAL;
10845 goto out;
10846 }
10847
10848 func->followup_id =
10849 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10850 func->followup_reqid =
10851 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10852 memcpy(func->followup_dest.addr,
10853 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10854 sizeof(func->followup_dest.addr));
10855 if (func->ttl) {
10856 err = -EINVAL;
10857 goto out;
10858 }
10859 break;
10860 default:
10861 err = -EINVAL;
10862 goto out;
10863 }
10864
10865 if (tb[NL80211_NAN_FUNC_SRF]) {
10866 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10867
10868 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10869 tb[NL80211_NAN_FUNC_SRF],
10870 nl80211_nan_srf_policy);
10871 if (err)
10872 goto out;
10873
10874 func->srf_include =
10875 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10876
10877 if (srf_tb[NL80211_NAN_SRF_BF]) {
10878 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10879 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10880 err = -EINVAL;
10881 goto out;
10882 }
10883
10884 func->srf_bf_len =
10885 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10886 func->srf_bf =
10887 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10888 func->srf_bf_len, GFP_KERNEL);
10889 if (!func->srf_bf) {
10890 err = -ENOMEM;
10891 goto out;
10892 }
10893
10894 func->srf_bf_idx =
10895 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10896 } else {
10897 struct nlattr *attr, *mac_attr =
10898 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10899 int n_entries, rem, i = 0;
10900
10901 if (!mac_attr) {
10902 err = -EINVAL;
10903 goto out;
10904 }
10905
10906 n_entries = validate_acl_mac_addrs(mac_attr);
10907 if (n_entries <= 0) {
10908 err = -EINVAL;
10909 goto out;
10910 }
10911
10912 func->srf_num_macs = n_entries;
10913 func->srf_macs =
10914 kzalloc(sizeof(*func->srf_macs) * n_entries,
10915 GFP_KERNEL);
10916 if (!func->srf_macs) {
10917 err = -ENOMEM;
10918 goto out;
10919 }
10920
10921 nla_for_each_nested(attr, mac_attr, rem)
10922 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10923 sizeof(*func->srf_macs));
10924 }
10925 }
10926
10927 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10928 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10929 func, true);
10930 if (err)
10931 goto out;
10932 }
10933
10934 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10935 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10936 func, false);
10937 if (err)
10938 goto out;
10939 }
10940
10941 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10942 if (!msg) {
10943 err = -ENOMEM;
10944 goto out;
10945 }
10946
10947 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10948 NL80211_CMD_ADD_NAN_FUNCTION);
10949 /* This can't really happen - we just allocated 4KB */
10950 if (WARN_ON(!hdr)) {
10951 err = -ENOMEM;
10952 goto out;
10953 }
10954
10955 err = rdev_add_nan_func(rdev, wdev, func);
10956 out:
10957 if (err < 0) {
10958 cfg80211_free_nan_func(func);
10959 nlmsg_free(msg);
10960 return err;
10961 }
10962
10963 /* propagate the instance id and cookie to userspace */
10964 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10965 NL80211_ATTR_PAD))
10966 goto nla_put_failure;
10967
10968 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10969 if (!func_attr)
10970 goto nla_put_failure;
10971
10972 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10973 func->instance_id))
10974 goto nla_put_failure;
10975
10976 nla_nest_end(msg, func_attr);
10977
10978 genlmsg_end(msg, hdr);
10979 return genlmsg_reply(msg, info);
10980
10981 nla_put_failure:
10982 nlmsg_free(msg);
10983 return -ENOBUFS;
10984 }
10985
10986 static int nl80211_nan_del_func(struct sk_buff *skb,
10987 struct genl_info *info)
10988 {
10989 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10990 struct wireless_dev *wdev = info->user_ptr[1];
10991 u64 cookie;
10992
10993 if (wdev->iftype != NL80211_IFTYPE_NAN)
10994 return -EOPNOTSUPP;
10995
10996 if (!wdev_running(wdev))
10997 return -ENOTCONN;
10998
10999 if (!info->attrs[NL80211_ATTR_COOKIE])
11000 return -EINVAL;
11001
11002 if (wdev->owner_nlportid &&
11003 wdev->owner_nlportid != info->snd_portid)
11004 return -ENOTCONN;
11005
11006 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11007
11008 rdev_del_nan_func(rdev, wdev, cookie);
11009
11010 return 0;
11011 }
11012
11013 static int nl80211_nan_change_config(struct sk_buff *skb,
11014 struct genl_info *info)
11015 {
11016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11017 struct wireless_dev *wdev = info->user_ptr[1];
11018 struct cfg80211_nan_conf conf = {};
11019 u32 changed = 0;
11020
11021 if (wdev->iftype != NL80211_IFTYPE_NAN)
11022 return -EOPNOTSUPP;
11023
11024 if (!wdev_running(wdev))
11025 return -ENOTCONN;
11026
11027 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11028 conf.master_pref =
11029 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11030 if (conf.master_pref <= 1 || conf.master_pref == 255)
11031 return -EINVAL;
11032
11033 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11034 }
11035
11036 if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11037 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11038 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11039 }
11040
11041 if (!changed)
11042 return -EINVAL;
11043
11044 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11045 }
11046
11047 void cfg80211_nan_match(struct wireless_dev *wdev,
11048 struct cfg80211_nan_match_params *match, gfp_t gfp)
11049 {
11050 struct wiphy *wiphy = wdev->wiphy;
11051 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11052 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11053 struct sk_buff *msg;
11054 void *hdr;
11055
11056 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11057 return;
11058
11059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11060 if (!msg)
11061 return;
11062
11063 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11064 if (!hdr) {
11065 nlmsg_free(msg);
11066 return;
11067 }
11068
11069 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11070 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11071 wdev->netdev->ifindex)) ||
11072 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11073 NL80211_ATTR_PAD))
11074 goto nla_put_failure;
11075
11076 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11077 NL80211_ATTR_PAD) ||
11078 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11079 goto nla_put_failure;
11080
11081 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11082 if (!match_attr)
11083 goto nla_put_failure;
11084
11085 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11086 if (!local_func_attr)
11087 goto nla_put_failure;
11088
11089 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11090 goto nla_put_failure;
11091
11092 nla_nest_end(msg, local_func_attr);
11093
11094 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11095 if (!peer_func_attr)
11096 goto nla_put_failure;
11097
11098 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11099 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11100 goto nla_put_failure;
11101
11102 if (match->info && match->info_len &&
11103 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11104 match->info))
11105 goto nla_put_failure;
11106
11107 nla_nest_end(msg, peer_func_attr);
11108 nla_nest_end(msg, match_attr);
11109 genlmsg_end(msg, hdr);
11110
11111 if (!wdev->owner_nlportid)
11112 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11113 msg, 0, NL80211_MCGRP_NAN, gfp);
11114 else
11115 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11116 wdev->owner_nlportid);
11117
11118 return;
11119
11120 nla_put_failure:
11121 nlmsg_free(msg);
11122 }
11123 EXPORT_SYMBOL(cfg80211_nan_match);
11124
11125 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11126 u8 inst_id,
11127 enum nl80211_nan_func_term_reason reason,
11128 u64 cookie, gfp_t gfp)
11129 {
11130 struct wiphy *wiphy = wdev->wiphy;
11131 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11132 struct sk_buff *msg;
11133 struct nlattr *func_attr;
11134 void *hdr;
11135
11136 if (WARN_ON(!inst_id))
11137 return;
11138
11139 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11140 if (!msg)
11141 return;
11142
11143 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11144 if (!hdr) {
11145 nlmsg_free(msg);
11146 return;
11147 }
11148
11149 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11150 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11151 wdev->netdev->ifindex)) ||
11152 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11153 NL80211_ATTR_PAD))
11154 goto nla_put_failure;
11155
11156 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11157 NL80211_ATTR_PAD))
11158 goto nla_put_failure;
11159
11160 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11161 if (!func_attr)
11162 goto nla_put_failure;
11163
11164 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11165 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11166 goto nla_put_failure;
11167
11168 nla_nest_end(msg, func_attr);
11169 genlmsg_end(msg, hdr);
11170
11171 if (!wdev->owner_nlportid)
11172 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11173 msg, 0, NL80211_MCGRP_NAN, gfp);
11174 else
11175 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11176 wdev->owner_nlportid);
11177
11178 return;
11179
11180 nla_put_failure:
11181 nlmsg_free(msg);
11182 }
11183 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11184
11185 static int nl80211_get_protocol_features(struct sk_buff *skb,
11186 struct genl_info *info)
11187 {
11188 void *hdr;
11189 struct sk_buff *msg;
11190
11191 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11192 if (!msg)
11193 return -ENOMEM;
11194
11195 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11196 NL80211_CMD_GET_PROTOCOL_FEATURES);
11197 if (!hdr)
11198 goto nla_put_failure;
11199
11200 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11201 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11202 goto nla_put_failure;
11203
11204 genlmsg_end(msg, hdr);
11205 return genlmsg_reply(msg, info);
11206
11207 nla_put_failure:
11208 kfree_skb(msg);
11209 return -ENOBUFS;
11210 }
11211
11212 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11213 {
11214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11215 struct cfg80211_update_ft_ies_params ft_params;
11216 struct net_device *dev = info->user_ptr[1];
11217
11218 if (!rdev->ops->update_ft_ies)
11219 return -EOPNOTSUPP;
11220
11221 if (!info->attrs[NL80211_ATTR_MDID] ||
11222 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11223 return -EINVAL;
11224
11225 memset(&ft_params, 0, sizeof(ft_params));
11226 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11227 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11228 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11229
11230 return rdev_update_ft_ies(rdev, dev, &ft_params);
11231 }
11232
11233 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11234 struct genl_info *info)
11235 {
11236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11237 struct wireless_dev *wdev = info->user_ptr[1];
11238 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11239 u16 duration;
11240 int ret;
11241
11242 if (!rdev->ops->crit_proto_start)
11243 return -EOPNOTSUPP;
11244
11245 if (WARN_ON(!rdev->ops->crit_proto_stop))
11246 return -EINVAL;
11247
11248 if (rdev->crit_proto_nlportid)
11249 return -EBUSY;
11250
11251 /* determine protocol if provided */
11252 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11253 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11254
11255 if (proto >= NUM_NL80211_CRIT_PROTO)
11256 return -EINVAL;
11257
11258 /* timeout must be provided */
11259 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11260 return -EINVAL;
11261
11262 duration =
11263 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11264
11265 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11266 return -ERANGE;
11267
11268 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11269 if (!ret)
11270 rdev->crit_proto_nlportid = info->snd_portid;
11271
11272 return ret;
11273 }
11274
11275 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11276 struct genl_info *info)
11277 {
11278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11279 struct wireless_dev *wdev = info->user_ptr[1];
11280
11281 if (!rdev->ops->crit_proto_stop)
11282 return -EOPNOTSUPP;
11283
11284 if (rdev->crit_proto_nlportid) {
11285 rdev->crit_proto_nlportid = 0;
11286 rdev_crit_proto_stop(rdev, wdev);
11287 }
11288 return 0;
11289 }
11290
11291 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11292 {
11293 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11294 struct wireless_dev *wdev =
11295 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11296 int i, err;
11297 u32 vid, subcmd;
11298
11299 if (!rdev->wiphy.vendor_commands)
11300 return -EOPNOTSUPP;
11301
11302 if (IS_ERR(wdev)) {
11303 err = PTR_ERR(wdev);
11304 if (err != -EINVAL)
11305 return err;
11306 wdev = NULL;
11307 } else if (wdev->wiphy != &rdev->wiphy) {
11308 return -EINVAL;
11309 }
11310
11311 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11312 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11313 return -EINVAL;
11314
11315 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11316 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11317 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11318 const struct wiphy_vendor_command *vcmd;
11319 void *data = NULL;
11320 int len = 0;
11321
11322 vcmd = &rdev->wiphy.vendor_commands[i];
11323
11324 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11325 continue;
11326
11327 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11328 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11329 if (!wdev)
11330 return -EINVAL;
11331 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11332 !wdev->netdev)
11333 return -EINVAL;
11334
11335 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11336 if (!wdev_running(wdev))
11337 return -ENETDOWN;
11338 }
11339
11340 if (!vcmd->doit)
11341 return -EOPNOTSUPP;
11342 } else {
11343 wdev = NULL;
11344 }
11345
11346 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11347 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11348 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11349 }
11350
11351 rdev->cur_cmd_info = info;
11352 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11353 data, len);
11354 rdev->cur_cmd_info = NULL;
11355 return err;
11356 }
11357
11358 return -EOPNOTSUPP;
11359 }
11360
11361 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11362 struct netlink_callback *cb,
11363 struct cfg80211_registered_device **rdev,
11364 struct wireless_dev **wdev)
11365 {
11366 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11367 u32 vid, subcmd;
11368 unsigned int i;
11369 int vcmd_idx = -1;
11370 int err;
11371 void *data = NULL;
11372 unsigned int data_len = 0;
11373
11374 if (cb->args[0]) {
11375 /* subtract the 1 again here */
11376 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11377 struct wireless_dev *tmp;
11378
11379 if (!wiphy)
11380 return -ENODEV;
11381 *rdev = wiphy_to_rdev(wiphy);
11382 *wdev = NULL;
11383
11384 if (cb->args[1]) {
11385 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11386 if (tmp->identifier == cb->args[1] - 1) {
11387 *wdev = tmp;
11388 break;
11389 }
11390 }
11391 }
11392
11393 /* keep rtnl locked in successful case */
11394 return 0;
11395 }
11396
11397 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11398 attrbuf, nl80211_fam.maxattr, nl80211_policy);
11399 if (err)
11400 return err;
11401
11402 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11403 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11404 return -EINVAL;
11405
11406 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11407 if (IS_ERR(*wdev))
11408 *wdev = NULL;
11409
11410 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11411 if (IS_ERR(*rdev))
11412 return PTR_ERR(*rdev);
11413
11414 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11415 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11416
11417 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11418 const struct wiphy_vendor_command *vcmd;
11419
11420 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11421
11422 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11423 continue;
11424
11425 if (!vcmd->dumpit)
11426 return -EOPNOTSUPP;
11427
11428 vcmd_idx = i;
11429 break;
11430 }
11431
11432 if (vcmd_idx < 0)
11433 return -EOPNOTSUPP;
11434
11435 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11436 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11437 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11438 }
11439
11440 /* 0 is the first index - add 1 to parse only once */
11441 cb->args[0] = (*rdev)->wiphy_idx + 1;
11442 /* add 1 to know if it was NULL */
11443 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11444 cb->args[2] = vcmd_idx;
11445 cb->args[3] = (unsigned long)data;
11446 cb->args[4] = data_len;
11447
11448 /* keep rtnl locked in successful case */
11449 return 0;
11450 }
11451
11452 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11453 struct netlink_callback *cb)
11454 {
11455 struct cfg80211_registered_device *rdev;
11456 struct wireless_dev *wdev;
11457 unsigned int vcmd_idx;
11458 const struct wiphy_vendor_command *vcmd;
11459 void *data;
11460 int data_len;
11461 int err;
11462 struct nlattr *vendor_data;
11463
11464 rtnl_lock();
11465 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11466 if (err)
11467 goto out;
11468
11469 vcmd_idx = cb->args[2];
11470 data = (void *)cb->args[3];
11471 data_len = cb->args[4];
11472 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11473
11474 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11475 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11476 if (!wdev) {
11477 err = -EINVAL;
11478 goto out;
11479 }
11480 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11481 !wdev->netdev) {
11482 err = -EINVAL;
11483 goto out;
11484 }
11485
11486 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11487 if (!wdev_running(wdev)) {
11488 err = -ENETDOWN;
11489 goto out;
11490 }
11491 }
11492 }
11493
11494 while (1) {
11495 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11496 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11497 NL80211_CMD_VENDOR);
11498 if (!hdr)
11499 break;
11500
11501 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11502 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11503 wdev_id(wdev),
11504 NL80211_ATTR_PAD))) {
11505 genlmsg_cancel(skb, hdr);
11506 break;
11507 }
11508
11509 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11510 if (!vendor_data) {
11511 genlmsg_cancel(skb, hdr);
11512 break;
11513 }
11514
11515 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11516 (unsigned long *)&cb->args[5]);
11517 nla_nest_end(skb, vendor_data);
11518
11519 if (err == -ENOBUFS || err == -ENOENT) {
11520 genlmsg_cancel(skb, hdr);
11521 break;
11522 } else if (err) {
11523 genlmsg_cancel(skb, hdr);
11524 goto out;
11525 }
11526
11527 genlmsg_end(skb, hdr);
11528 }
11529
11530 err = skb->len;
11531 out:
11532 rtnl_unlock();
11533 return err;
11534 }
11535
11536 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11537 enum nl80211_commands cmd,
11538 enum nl80211_attrs attr,
11539 int approxlen)
11540 {
11541 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11542
11543 if (WARN_ON(!rdev->cur_cmd_info))
11544 return NULL;
11545
11546 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11547 rdev->cur_cmd_info->snd_portid,
11548 rdev->cur_cmd_info->snd_seq,
11549 cmd, attr, NULL, GFP_KERNEL);
11550 }
11551 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11552
11553 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11554 {
11555 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11556 void *hdr = ((void **)skb->cb)[1];
11557 struct nlattr *data = ((void **)skb->cb)[2];
11558
11559 /* clear CB data for netlink core to own from now on */
11560 memset(skb->cb, 0, sizeof(skb->cb));
11561
11562 if (WARN_ON(!rdev->cur_cmd_info)) {
11563 kfree_skb(skb);
11564 return -EINVAL;
11565 }
11566
11567 nla_nest_end(skb, data);
11568 genlmsg_end(skb, hdr);
11569 return genlmsg_reply(skb, rdev->cur_cmd_info);
11570 }
11571 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11572
11573 static int nl80211_set_qos_map(struct sk_buff *skb,
11574 struct genl_info *info)
11575 {
11576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11577 struct cfg80211_qos_map *qos_map = NULL;
11578 struct net_device *dev = info->user_ptr[1];
11579 u8 *pos, len, num_des, des_len, des;
11580 int ret;
11581
11582 if (!rdev->ops->set_qos_map)
11583 return -EOPNOTSUPP;
11584
11585 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11586 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11587 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11588
11589 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11590 len > IEEE80211_QOS_MAP_LEN_MAX)
11591 return -EINVAL;
11592
11593 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11594 if (!qos_map)
11595 return -ENOMEM;
11596
11597 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11598 if (num_des) {
11599 des_len = num_des *
11600 sizeof(struct cfg80211_dscp_exception);
11601 memcpy(qos_map->dscp_exception, pos, des_len);
11602 qos_map->num_des = num_des;
11603 for (des = 0; des < num_des; des++) {
11604 if (qos_map->dscp_exception[des].up > 7) {
11605 kfree(qos_map);
11606 return -EINVAL;
11607 }
11608 }
11609 pos += des_len;
11610 }
11611 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11612 }
11613
11614 wdev_lock(dev->ieee80211_ptr);
11615 ret = nl80211_key_allowed(dev->ieee80211_ptr);
11616 if (!ret)
11617 ret = rdev_set_qos_map(rdev, dev, qos_map);
11618 wdev_unlock(dev->ieee80211_ptr);
11619
11620 kfree(qos_map);
11621 return ret;
11622 }
11623
11624 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11625 {
11626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11627 struct net_device *dev = info->user_ptr[1];
11628 struct wireless_dev *wdev = dev->ieee80211_ptr;
11629 const u8 *peer;
11630 u8 tsid, up;
11631 u16 admitted_time = 0;
11632 int err;
11633
11634 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11635 return -EOPNOTSUPP;
11636
11637 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11638 !info->attrs[NL80211_ATTR_USER_PRIO])
11639 return -EINVAL;
11640
11641 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11642 if (tsid >= IEEE80211_NUM_TIDS)
11643 return -EINVAL;
11644
11645 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11646 if (up >= IEEE80211_NUM_UPS)
11647 return -EINVAL;
11648
11649 /* WMM uses TIDs 0-7 even for TSPEC */
11650 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11651 /* TODO: handle 802.11 TSPEC/admission control
11652 * need more attributes for that (e.g. BA session requirement);
11653 * change the WMM adminssion test above to allow both then
11654 */
11655 return -EINVAL;
11656 }
11657
11658 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11659
11660 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11661 admitted_time =
11662 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11663 if (!admitted_time)
11664 return -EINVAL;
11665 }
11666
11667 wdev_lock(wdev);
11668 switch (wdev->iftype) {
11669 case NL80211_IFTYPE_STATION:
11670 case NL80211_IFTYPE_P2P_CLIENT:
11671 if (wdev->current_bss)
11672 break;
11673 err = -ENOTCONN;
11674 goto out;
11675 default:
11676 err = -EOPNOTSUPP;
11677 goto out;
11678 }
11679
11680 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11681
11682 out:
11683 wdev_unlock(wdev);
11684 return err;
11685 }
11686
11687 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11688 {
11689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11690 struct net_device *dev = info->user_ptr[1];
11691 struct wireless_dev *wdev = dev->ieee80211_ptr;
11692 const u8 *peer;
11693 u8 tsid;
11694 int err;
11695
11696 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11697 return -EINVAL;
11698
11699 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11700 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11701
11702 wdev_lock(wdev);
11703 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11704 wdev_unlock(wdev);
11705
11706 return err;
11707 }
11708
11709 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11710 struct genl_info *info)
11711 {
11712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11713 struct net_device *dev = info->user_ptr[1];
11714 struct wireless_dev *wdev = dev->ieee80211_ptr;
11715 struct cfg80211_chan_def chandef = {};
11716 const u8 *addr;
11717 u8 oper_class;
11718 int err;
11719
11720 if (!rdev->ops->tdls_channel_switch ||
11721 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11722 return -EOPNOTSUPP;
11723
11724 switch (dev->ieee80211_ptr->iftype) {
11725 case NL80211_IFTYPE_STATION:
11726 case NL80211_IFTYPE_P2P_CLIENT:
11727 break;
11728 default:
11729 return -EOPNOTSUPP;
11730 }
11731
11732 if (!info->attrs[NL80211_ATTR_MAC] ||
11733 !info->attrs[NL80211_ATTR_OPER_CLASS])
11734 return -EINVAL;
11735
11736 err = nl80211_parse_chandef(rdev, info, &chandef);
11737 if (err)
11738 return err;
11739
11740 /*
11741 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11742 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11743 * specification is not defined for them.
11744 */
11745 if (chandef.chan->band == NL80211_BAND_2GHZ &&
11746 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11747 chandef.width != NL80211_CHAN_WIDTH_20)
11748 return -EINVAL;
11749
11750 /* we will be active on the TDLS link */
11751 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11752 wdev->iftype))
11753 return -EINVAL;
11754
11755 /* don't allow switching to DFS channels */
11756 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11757 return -EINVAL;
11758
11759 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11760 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11761
11762 wdev_lock(wdev);
11763 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11764 wdev_unlock(wdev);
11765
11766 return err;
11767 }
11768
11769 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11770 struct genl_info *info)
11771 {
11772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11773 struct net_device *dev = info->user_ptr[1];
11774 struct wireless_dev *wdev = dev->ieee80211_ptr;
11775 const u8 *addr;
11776
11777 if (!rdev->ops->tdls_channel_switch ||
11778 !rdev->ops->tdls_cancel_channel_switch ||
11779 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11780 return -EOPNOTSUPP;
11781
11782 switch (dev->ieee80211_ptr->iftype) {
11783 case NL80211_IFTYPE_STATION:
11784 case NL80211_IFTYPE_P2P_CLIENT:
11785 break;
11786 default:
11787 return -EOPNOTSUPP;
11788 }
11789
11790 if (!info->attrs[NL80211_ATTR_MAC])
11791 return -EINVAL;
11792
11793 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11794
11795 wdev_lock(wdev);
11796 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11797 wdev_unlock(wdev);
11798
11799 return 0;
11800 }
11801
11802 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11803 struct genl_info *info)
11804 {
11805 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11806 struct net_device *dev = info->user_ptr[1];
11807 struct wireless_dev *wdev = dev->ieee80211_ptr;
11808 const struct nlattr *nla;
11809 bool enabled;
11810
11811 if (netif_running(dev))
11812 return -EBUSY;
11813
11814 if (!rdev->ops->set_multicast_to_unicast)
11815 return -EOPNOTSUPP;
11816
11817 if (wdev->iftype != NL80211_IFTYPE_AP &&
11818 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11819 return -EOPNOTSUPP;
11820
11821 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11822 enabled = nla_get_flag(nla);
11823
11824 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11825 }
11826
11827 #define NL80211_FLAG_NEED_WIPHY 0x01
11828 #define NL80211_FLAG_NEED_NETDEV 0x02
11829 #define NL80211_FLAG_NEED_RTNL 0x04
11830 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11831 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11832 NL80211_FLAG_CHECK_NETDEV_UP)
11833 #define NL80211_FLAG_NEED_WDEV 0x10
11834 /* If a netdev is associated, it must be UP, P2P must be started */
11835 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11836 NL80211_FLAG_CHECK_NETDEV_UP)
11837 #define NL80211_FLAG_CLEAR_SKB 0x20
11838
11839 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11840 struct genl_info *info)
11841 {
11842 struct cfg80211_registered_device *rdev;
11843 struct wireless_dev *wdev;
11844 struct net_device *dev;
11845 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11846
11847 if (rtnl)
11848 rtnl_lock();
11849
11850 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11851 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11852 if (IS_ERR(rdev)) {
11853 if (rtnl)
11854 rtnl_unlock();
11855 return PTR_ERR(rdev);
11856 }
11857 info->user_ptr[0] = rdev;
11858 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11859 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11860 ASSERT_RTNL();
11861
11862 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11863 info->attrs);
11864 if (IS_ERR(wdev)) {
11865 if (rtnl)
11866 rtnl_unlock();
11867 return PTR_ERR(wdev);
11868 }
11869
11870 dev = wdev->netdev;
11871 rdev = wiphy_to_rdev(wdev->wiphy);
11872
11873 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11874 if (!dev) {
11875 if (rtnl)
11876 rtnl_unlock();
11877 return -EINVAL;
11878 }
11879
11880 info->user_ptr[1] = dev;
11881 } else {
11882 info->user_ptr[1] = wdev;
11883 }
11884
11885 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11886 !wdev_running(wdev)) {
11887 if (rtnl)
11888 rtnl_unlock();
11889 return -ENETDOWN;
11890 }
11891
11892 if (dev)
11893 dev_hold(dev);
11894
11895 info->user_ptr[0] = rdev;
11896 }
11897
11898 return 0;
11899 }
11900
11901 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11902 struct genl_info *info)
11903 {
11904 if (info->user_ptr[1]) {
11905 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11906 struct wireless_dev *wdev = info->user_ptr[1];
11907
11908 if (wdev->netdev)
11909 dev_put(wdev->netdev);
11910 } else {
11911 dev_put(info->user_ptr[1]);
11912 }
11913 }
11914
11915 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11916 rtnl_unlock();
11917
11918 /* If needed, clear the netlink message payload from the SKB
11919 * as it might contain key data that shouldn't stick around on
11920 * the heap after the SKB is freed. The netlink message header
11921 * is still needed for further processing, so leave it intact.
11922 */
11923 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11924 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11925
11926 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11927 }
11928 }
11929
11930 static const struct genl_ops nl80211_ops[] = {
11931 {
11932 .cmd = NL80211_CMD_GET_WIPHY,
11933 .doit = nl80211_get_wiphy,
11934 .dumpit = nl80211_dump_wiphy,
11935 .done = nl80211_dump_wiphy_done,
11936 .policy = nl80211_policy,
11937 /* can be retrieved by unprivileged users */
11938 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11939 NL80211_FLAG_NEED_RTNL,
11940 },
11941 {
11942 .cmd = NL80211_CMD_SET_WIPHY,
11943 .doit = nl80211_set_wiphy,
11944 .policy = nl80211_policy,
11945 .flags = GENL_UNS_ADMIN_PERM,
11946 .internal_flags = NL80211_FLAG_NEED_RTNL,
11947 },
11948 {
11949 .cmd = NL80211_CMD_GET_INTERFACE,
11950 .doit = nl80211_get_interface,
11951 .dumpit = nl80211_dump_interface,
11952 .policy = nl80211_policy,
11953 /* can be retrieved by unprivileged users */
11954 .internal_flags = NL80211_FLAG_NEED_WDEV |
11955 NL80211_FLAG_NEED_RTNL,
11956 },
11957 {
11958 .cmd = NL80211_CMD_SET_INTERFACE,
11959 .doit = nl80211_set_interface,
11960 .policy = nl80211_policy,
11961 .flags = GENL_UNS_ADMIN_PERM,
11962 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11963 NL80211_FLAG_NEED_RTNL,
11964 },
11965 {
11966 .cmd = NL80211_CMD_NEW_INTERFACE,
11967 .doit = nl80211_new_interface,
11968 .policy = nl80211_policy,
11969 .flags = GENL_UNS_ADMIN_PERM,
11970 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11971 NL80211_FLAG_NEED_RTNL,
11972 },
11973 {
11974 .cmd = NL80211_CMD_DEL_INTERFACE,
11975 .doit = nl80211_del_interface,
11976 .policy = nl80211_policy,
11977 .flags = GENL_UNS_ADMIN_PERM,
11978 .internal_flags = NL80211_FLAG_NEED_WDEV |
11979 NL80211_FLAG_NEED_RTNL,
11980 },
11981 {
11982 .cmd = NL80211_CMD_GET_KEY,
11983 .doit = nl80211_get_key,
11984 .policy = nl80211_policy,
11985 .flags = GENL_UNS_ADMIN_PERM,
11986 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11987 NL80211_FLAG_NEED_RTNL,
11988 },
11989 {
11990 .cmd = NL80211_CMD_SET_KEY,
11991 .doit = nl80211_set_key,
11992 .policy = nl80211_policy,
11993 .flags = GENL_UNS_ADMIN_PERM,
11994 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11995 NL80211_FLAG_NEED_RTNL |
11996 NL80211_FLAG_CLEAR_SKB,
11997 },
11998 {
11999 .cmd = NL80211_CMD_NEW_KEY,
12000 .doit = nl80211_new_key,
12001 .policy = nl80211_policy,
12002 .flags = GENL_UNS_ADMIN_PERM,
12003 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12004 NL80211_FLAG_NEED_RTNL |
12005 NL80211_FLAG_CLEAR_SKB,
12006 },
12007 {
12008 .cmd = NL80211_CMD_DEL_KEY,
12009 .doit = nl80211_del_key,
12010 .policy = nl80211_policy,
12011 .flags = GENL_UNS_ADMIN_PERM,
12012 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12013 NL80211_FLAG_NEED_RTNL,
12014 },
12015 {
12016 .cmd = NL80211_CMD_SET_BEACON,
12017 .policy = nl80211_policy,
12018 .flags = GENL_UNS_ADMIN_PERM,
12019 .doit = nl80211_set_beacon,
12020 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12021 NL80211_FLAG_NEED_RTNL,
12022 },
12023 {
12024 .cmd = NL80211_CMD_START_AP,
12025 .policy = nl80211_policy,
12026 .flags = GENL_UNS_ADMIN_PERM,
12027 .doit = nl80211_start_ap,
12028 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12029 NL80211_FLAG_NEED_RTNL,
12030 },
12031 {
12032 .cmd = NL80211_CMD_STOP_AP,
12033 .policy = nl80211_policy,
12034 .flags = GENL_UNS_ADMIN_PERM,
12035 .doit = nl80211_stop_ap,
12036 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12037 NL80211_FLAG_NEED_RTNL,
12038 },
12039 {
12040 .cmd = NL80211_CMD_GET_STATION,
12041 .doit = nl80211_get_station,
12042 .dumpit = nl80211_dump_station,
12043 .policy = nl80211_policy,
12044 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12045 NL80211_FLAG_NEED_RTNL,
12046 },
12047 {
12048 .cmd = NL80211_CMD_SET_STATION,
12049 .doit = nl80211_set_station,
12050 .policy = nl80211_policy,
12051 .flags = GENL_UNS_ADMIN_PERM,
12052 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12053 NL80211_FLAG_NEED_RTNL,
12054 },
12055 {
12056 .cmd = NL80211_CMD_NEW_STATION,
12057 .doit = nl80211_new_station,
12058 .policy = nl80211_policy,
12059 .flags = GENL_UNS_ADMIN_PERM,
12060 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12061 NL80211_FLAG_NEED_RTNL,
12062 },
12063 {
12064 .cmd = NL80211_CMD_DEL_STATION,
12065 .doit = nl80211_del_station,
12066 .policy = nl80211_policy,
12067 .flags = GENL_UNS_ADMIN_PERM,
12068 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12069 NL80211_FLAG_NEED_RTNL,
12070 },
12071 {
12072 .cmd = NL80211_CMD_GET_MPATH,
12073 .doit = nl80211_get_mpath,
12074 .dumpit = nl80211_dump_mpath,
12075 .policy = nl80211_policy,
12076 .flags = GENL_UNS_ADMIN_PERM,
12077 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12078 NL80211_FLAG_NEED_RTNL,
12079 },
12080 {
12081 .cmd = NL80211_CMD_GET_MPP,
12082 .doit = nl80211_get_mpp,
12083 .dumpit = nl80211_dump_mpp,
12084 .policy = nl80211_policy,
12085 .flags = GENL_UNS_ADMIN_PERM,
12086 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12087 NL80211_FLAG_NEED_RTNL,
12088 },
12089 {
12090 .cmd = NL80211_CMD_SET_MPATH,
12091 .doit = nl80211_set_mpath,
12092 .policy = nl80211_policy,
12093 .flags = GENL_UNS_ADMIN_PERM,
12094 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12095 NL80211_FLAG_NEED_RTNL,
12096 },
12097 {
12098 .cmd = NL80211_CMD_NEW_MPATH,
12099 .doit = nl80211_new_mpath,
12100 .policy = nl80211_policy,
12101 .flags = GENL_UNS_ADMIN_PERM,
12102 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12103 NL80211_FLAG_NEED_RTNL,
12104 },
12105 {
12106 .cmd = NL80211_CMD_DEL_MPATH,
12107 .doit = nl80211_del_mpath,
12108 .policy = nl80211_policy,
12109 .flags = GENL_UNS_ADMIN_PERM,
12110 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12111 NL80211_FLAG_NEED_RTNL,
12112 },
12113 {
12114 .cmd = NL80211_CMD_SET_BSS,
12115 .doit = nl80211_set_bss,
12116 .policy = nl80211_policy,
12117 .flags = GENL_UNS_ADMIN_PERM,
12118 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12119 NL80211_FLAG_NEED_RTNL,
12120 },
12121 {
12122 .cmd = NL80211_CMD_GET_REG,
12123 .doit = nl80211_get_reg_do,
12124 .dumpit = nl80211_get_reg_dump,
12125 .policy = nl80211_policy,
12126 .internal_flags = NL80211_FLAG_NEED_RTNL,
12127 /* can be retrieved by unprivileged users */
12128 },
12129 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12130 {
12131 .cmd = NL80211_CMD_SET_REG,
12132 .doit = nl80211_set_reg,
12133 .policy = nl80211_policy,
12134 .flags = GENL_ADMIN_PERM,
12135 .internal_flags = NL80211_FLAG_NEED_RTNL,
12136 },
12137 #endif
12138 {
12139 .cmd = NL80211_CMD_REQ_SET_REG,
12140 .doit = nl80211_req_set_reg,
12141 .policy = nl80211_policy,
12142 .flags = GENL_ADMIN_PERM,
12143 },
12144 {
12145 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12146 .doit = nl80211_get_mesh_config,
12147 .policy = nl80211_policy,
12148 /* can be retrieved by unprivileged users */
12149 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12150 NL80211_FLAG_NEED_RTNL,
12151 },
12152 {
12153 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12154 .doit = nl80211_update_mesh_config,
12155 .policy = nl80211_policy,
12156 .flags = GENL_UNS_ADMIN_PERM,
12157 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12158 NL80211_FLAG_NEED_RTNL,
12159 },
12160 {
12161 .cmd = NL80211_CMD_TRIGGER_SCAN,
12162 .doit = nl80211_trigger_scan,
12163 .policy = nl80211_policy,
12164 .flags = GENL_UNS_ADMIN_PERM,
12165 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12166 NL80211_FLAG_NEED_RTNL,
12167 },
12168 {
12169 .cmd = NL80211_CMD_ABORT_SCAN,
12170 .doit = nl80211_abort_scan,
12171 .policy = nl80211_policy,
12172 .flags = GENL_UNS_ADMIN_PERM,
12173 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12174 NL80211_FLAG_NEED_RTNL,
12175 },
12176 {
12177 .cmd = NL80211_CMD_GET_SCAN,
12178 .policy = nl80211_policy,
12179 .dumpit = nl80211_dump_scan,
12180 },
12181 {
12182 .cmd = NL80211_CMD_START_SCHED_SCAN,
12183 .doit = nl80211_start_sched_scan,
12184 .policy = nl80211_policy,
12185 .flags = GENL_UNS_ADMIN_PERM,
12186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12187 NL80211_FLAG_NEED_RTNL,
12188 },
12189 {
12190 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12191 .doit = nl80211_stop_sched_scan,
12192 .policy = nl80211_policy,
12193 .flags = GENL_UNS_ADMIN_PERM,
12194 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12195 NL80211_FLAG_NEED_RTNL,
12196 },
12197 {
12198 .cmd = NL80211_CMD_AUTHENTICATE,
12199 .doit = nl80211_authenticate,
12200 .policy = nl80211_policy,
12201 .flags = GENL_UNS_ADMIN_PERM,
12202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12203 NL80211_FLAG_NEED_RTNL |
12204 NL80211_FLAG_CLEAR_SKB,
12205 },
12206 {
12207 .cmd = NL80211_CMD_ASSOCIATE,
12208 .doit = nl80211_associate,
12209 .policy = nl80211_policy,
12210 .flags = GENL_UNS_ADMIN_PERM,
12211 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12212 NL80211_FLAG_NEED_RTNL,
12213 },
12214 {
12215 .cmd = NL80211_CMD_DEAUTHENTICATE,
12216 .doit = nl80211_deauthenticate,
12217 .policy = nl80211_policy,
12218 .flags = GENL_UNS_ADMIN_PERM,
12219 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12220 NL80211_FLAG_NEED_RTNL,
12221 },
12222 {
12223 .cmd = NL80211_CMD_DISASSOCIATE,
12224 .doit = nl80211_disassociate,
12225 .policy = nl80211_policy,
12226 .flags = GENL_UNS_ADMIN_PERM,
12227 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12228 NL80211_FLAG_NEED_RTNL,
12229 },
12230 {
12231 .cmd = NL80211_CMD_JOIN_IBSS,
12232 .doit = nl80211_join_ibss,
12233 .policy = nl80211_policy,
12234 .flags = GENL_UNS_ADMIN_PERM,
12235 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12236 NL80211_FLAG_NEED_RTNL,
12237 },
12238 {
12239 .cmd = NL80211_CMD_LEAVE_IBSS,
12240 .doit = nl80211_leave_ibss,
12241 .policy = nl80211_policy,
12242 .flags = GENL_UNS_ADMIN_PERM,
12243 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12244 NL80211_FLAG_NEED_RTNL,
12245 },
12246 #ifdef CONFIG_NL80211_TESTMODE
12247 {
12248 .cmd = NL80211_CMD_TESTMODE,
12249 .doit = nl80211_testmode_do,
12250 .dumpit = nl80211_testmode_dump,
12251 .policy = nl80211_policy,
12252 .flags = GENL_UNS_ADMIN_PERM,
12253 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12254 NL80211_FLAG_NEED_RTNL,
12255 },
12256 #endif
12257 {
12258 .cmd = NL80211_CMD_CONNECT,
12259 .doit = nl80211_connect,
12260 .policy = nl80211_policy,
12261 .flags = GENL_UNS_ADMIN_PERM,
12262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12263 NL80211_FLAG_NEED_RTNL,
12264 },
12265 {
12266 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12267 .doit = nl80211_update_connect_params,
12268 .policy = nl80211_policy,
12269 .flags = GENL_ADMIN_PERM,
12270 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12271 NL80211_FLAG_NEED_RTNL,
12272 },
12273 {
12274 .cmd = NL80211_CMD_DISCONNECT,
12275 .doit = nl80211_disconnect,
12276 .policy = nl80211_policy,
12277 .flags = GENL_UNS_ADMIN_PERM,
12278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12279 NL80211_FLAG_NEED_RTNL,
12280 },
12281 {
12282 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12283 .doit = nl80211_wiphy_netns,
12284 .policy = nl80211_policy,
12285 .flags = GENL_UNS_ADMIN_PERM,
12286 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12287 NL80211_FLAG_NEED_RTNL,
12288 },
12289 {
12290 .cmd = NL80211_CMD_GET_SURVEY,
12291 .policy = nl80211_policy,
12292 .dumpit = nl80211_dump_survey,
12293 },
12294 {
12295 .cmd = NL80211_CMD_SET_PMKSA,
12296 .doit = nl80211_setdel_pmksa,
12297 .policy = nl80211_policy,
12298 .flags = GENL_UNS_ADMIN_PERM,
12299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12300 NL80211_FLAG_NEED_RTNL,
12301 },
12302 {
12303 .cmd = NL80211_CMD_DEL_PMKSA,
12304 .doit = nl80211_setdel_pmksa,
12305 .policy = nl80211_policy,
12306 .flags = GENL_UNS_ADMIN_PERM,
12307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12308 NL80211_FLAG_NEED_RTNL,
12309 },
12310 {
12311 .cmd = NL80211_CMD_FLUSH_PMKSA,
12312 .doit = nl80211_flush_pmksa,
12313 .policy = nl80211_policy,
12314 .flags = GENL_UNS_ADMIN_PERM,
12315 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12316 NL80211_FLAG_NEED_RTNL,
12317 },
12318 {
12319 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12320 .doit = nl80211_remain_on_channel,
12321 .policy = nl80211_policy,
12322 .flags = GENL_UNS_ADMIN_PERM,
12323 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12324 NL80211_FLAG_NEED_RTNL,
12325 },
12326 {
12327 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12328 .doit = nl80211_cancel_remain_on_channel,
12329 .policy = nl80211_policy,
12330 .flags = GENL_UNS_ADMIN_PERM,
12331 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12332 NL80211_FLAG_NEED_RTNL,
12333 },
12334 {
12335 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12336 .doit = nl80211_set_tx_bitrate_mask,
12337 .policy = nl80211_policy,
12338 .flags = GENL_UNS_ADMIN_PERM,
12339 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12340 NL80211_FLAG_NEED_RTNL,
12341 },
12342 {
12343 .cmd = NL80211_CMD_REGISTER_FRAME,
12344 .doit = nl80211_register_mgmt,
12345 .policy = nl80211_policy,
12346 .flags = GENL_UNS_ADMIN_PERM,
12347 .internal_flags = NL80211_FLAG_NEED_WDEV |
12348 NL80211_FLAG_NEED_RTNL,
12349 },
12350 {
12351 .cmd = NL80211_CMD_FRAME,
12352 .doit = nl80211_tx_mgmt,
12353 .policy = nl80211_policy,
12354 .flags = GENL_UNS_ADMIN_PERM,
12355 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12356 NL80211_FLAG_NEED_RTNL,
12357 },
12358 {
12359 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12360 .doit = nl80211_tx_mgmt_cancel_wait,
12361 .policy = nl80211_policy,
12362 .flags = GENL_UNS_ADMIN_PERM,
12363 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12364 NL80211_FLAG_NEED_RTNL,
12365 },
12366 {
12367 .cmd = NL80211_CMD_SET_POWER_SAVE,
12368 .doit = nl80211_set_power_save,
12369 .policy = nl80211_policy,
12370 .flags = GENL_UNS_ADMIN_PERM,
12371 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12372 NL80211_FLAG_NEED_RTNL,
12373 },
12374 {
12375 .cmd = NL80211_CMD_GET_POWER_SAVE,
12376 .doit = nl80211_get_power_save,
12377 .policy = nl80211_policy,
12378 /* can be retrieved by unprivileged users */
12379 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12380 NL80211_FLAG_NEED_RTNL,
12381 },
12382 {
12383 .cmd = NL80211_CMD_SET_CQM,
12384 .doit = nl80211_set_cqm,
12385 .policy = nl80211_policy,
12386 .flags = GENL_UNS_ADMIN_PERM,
12387 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12388 NL80211_FLAG_NEED_RTNL,
12389 },
12390 {
12391 .cmd = NL80211_CMD_SET_CHANNEL,
12392 .doit = nl80211_set_channel,
12393 .policy = nl80211_policy,
12394 .flags = GENL_UNS_ADMIN_PERM,
12395 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12396 NL80211_FLAG_NEED_RTNL,
12397 },
12398 {
12399 .cmd = NL80211_CMD_SET_WDS_PEER,
12400 .doit = nl80211_set_wds_peer,
12401 .policy = nl80211_policy,
12402 .flags = GENL_UNS_ADMIN_PERM,
12403 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12404 NL80211_FLAG_NEED_RTNL,
12405 },
12406 {
12407 .cmd = NL80211_CMD_JOIN_MESH,
12408 .doit = nl80211_join_mesh,
12409 .policy = nl80211_policy,
12410 .flags = GENL_UNS_ADMIN_PERM,
12411 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12412 NL80211_FLAG_NEED_RTNL,
12413 },
12414 {
12415 .cmd = NL80211_CMD_LEAVE_MESH,
12416 .doit = nl80211_leave_mesh,
12417 .policy = nl80211_policy,
12418 .flags = GENL_UNS_ADMIN_PERM,
12419 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12420 NL80211_FLAG_NEED_RTNL,
12421 },
12422 {
12423 .cmd = NL80211_CMD_JOIN_OCB,
12424 .doit = nl80211_join_ocb,
12425 .policy = nl80211_policy,
12426 .flags = GENL_UNS_ADMIN_PERM,
12427 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12428 NL80211_FLAG_NEED_RTNL,
12429 },
12430 {
12431 .cmd = NL80211_CMD_LEAVE_OCB,
12432 .doit = nl80211_leave_ocb,
12433 .policy = nl80211_policy,
12434 .flags = GENL_UNS_ADMIN_PERM,
12435 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12436 NL80211_FLAG_NEED_RTNL,
12437 },
12438 #ifdef CONFIG_PM
12439 {
12440 .cmd = NL80211_CMD_GET_WOWLAN,
12441 .doit = nl80211_get_wowlan,
12442 .policy = nl80211_policy,
12443 /* can be retrieved by unprivileged users */
12444 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12445 NL80211_FLAG_NEED_RTNL,
12446 },
12447 {
12448 .cmd = NL80211_CMD_SET_WOWLAN,
12449 .doit = nl80211_set_wowlan,
12450 .policy = nl80211_policy,
12451 .flags = GENL_UNS_ADMIN_PERM,
12452 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12453 NL80211_FLAG_NEED_RTNL,
12454 },
12455 #endif
12456 {
12457 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12458 .doit = nl80211_set_rekey_data,
12459 .policy = nl80211_policy,
12460 .flags = GENL_UNS_ADMIN_PERM,
12461 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12462 NL80211_FLAG_NEED_RTNL |
12463 NL80211_FLAG_CLEAR_SKB,
12464 },
12465 {
12466 .cmd = NL80211_CMD_TDLS_MGMT,
12467 .doit = nl80211_tdls_mgmt,
12468 .policy = nl80211_policy,
12469 .flags = GENL_UNS_ADMIN_PERM,
12470 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12471 NL80211_FLAG_NEED_RTNL,
12472 },
12473 {
12474 .cmd = NL80211_CMD_TDLS_OPER,
12475 .doit = nl80211_tdls_oper,
12476 .policy = nl80211_policy,
12477 .flags = GENL_UNS_ADMIN_PERM,
12478 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12479 NL80211_FLAG_NEED_RTNL,
12480 },
12481 {
12482 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12483 .doit = nl80211_register_unexpected_frame,
12484 .policy = nl80211_policy,
12485 .flags = GENL_UNS_ADMIN_PERM,
12486 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12487 NL80211_FLAG_NEED_RTNL,
12488 },
12489 {
12490 .cmd = NL80211_CMD_PROBE_CLIENT,
12491 .doit = nl80211_probe_client,
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_REGISTER_BEACONS,
12499 .doit = nl80211_register_beacons,
12500 .policy = nl80211_policy,
12501 .flags = GENL_UNS_ADMIN_PERM,
12502 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12503 NL80211_FLAG_NEED_RTNL,
12504 },
12505 {
12506 .cmd = NL80211_CMD_SET_NOACK_MAP,
12507 .doit = nl80211_set_noack_map,
12508 .policy = nl80211_policy,
12509 .flags = GENL_UNS_ADMIN_PERM,
12510 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12511 NL80211_FLAG_NEED_RTNL,
12512 },
12513 {
12514 .cmd = NL80211_CMD_START_P2P_DEVICE,
12515 .doit = nl80211_start_p2p_device,
12516 .policy = nl80211_policy,
12517 .flags = GENL_UNS_ADMIN_PERM,
12518 .internal_flags = NL80211_FLAG_NEED_WDEV |
12519 NL80211_FLAG_NEED_RTNL,
12520 },
12521 {
12522 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12523 .doit = nl80211_stop_p2p_device,
12524 .policy = nl80211_policy,
12525 .flags = GENL_UNS_ADMIN_PERM,
12526 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12527 NL80211_FLAG_NEED_RTNL,
12528 },
12529 {
12530 .cmd = NL80211_CMD_START_NAN,
12531 .doit = nl80211_start_nan,
12532 .policy = nl80211_policy,
12533 .flags = GENL_ADMIN_PERM,
12534 .internal_flags = NL80211_FLAG_NEED_WDEV |
12535 NL80211_FLAG_NEED_RTNL,
12536 },
12537 {
12538 .cmd = NL80211_CMD_STOP_NAN,
12539 .doit = nl80211_stop_nan,
12540 .policy = nl80211_policy,
12541 .flags = GENL_ADMIN_PERM,
12542 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12543 NL80211_FLAG_NEED_RTNL,
12544 },
12545 {
12546 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12547 .doit = nl80211_nan_add_func,
12548 .policy = nl80211_policy,
12549 .flags = GENL_ADMIN_PERM,
12550 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12551 NL80211_FLAG_NEED_RTNL,
12552 },
12553 {
12554 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12555 .doit = nl80211_nan_del_func,
12556 .policy = nl80211_policy,
12557 .flags = GENL_ADMIN_PERM,
12558 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12559 NL80211_FLAG_NEED_RTNL,
12560 },
12561 {
12562 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12563 .doit = nl80211_nan_change_config,
12564 .policy = nl80211_policy,
12565 .flags = GENL_ADMIN_PERM,
12566 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12567 NL80211_FLAG_NEED_RTNL,
12568 },
12569 {
12570 .cmd = NL80211_CMD_SET_MCAST_RATE,
12571 .doit = nl80211_set_mcast_rate,
12572 .policy = nl80211_policy,
12573 .flags = GENL_UNS_ADMIN_PERM,
12574 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12575 NL80211_FLAG_NEED_RTNL,
12576 },
12577 {
12578 .cmd = NL80211_CMD_SET_MAC_ACL,
12579 .doit = nl80211_set_mac_acl,
12580 .policy = nl80211_policy,
12581 .flags = GENL_UNS_ADMIN_PERM,
12582 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12583 NL80211_FLAG_NEED_RTNL,
12584 },
12585 {
12586 .cmd = NL80211_CMD_RADAR_DETECT,
12587 .doit = nl80211_start_radar_detection,
12588 .policy = nl80211_policy,
12589 .flags = GENL_UNS_ADMIN_PERM,
12590 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12591 NL80211_FLAG_NEED_RTNL,
12592 },
12593 {
12594 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12595 .doit = nl80211_get_protocol_features,
12596 .policy = nl80211_policy,
12597 },
12598 {
12599 .cmd = NL80211_CMD_UPDATE_FT_IES,
12600 .doit = nl80211_update_ft_ies,
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_CRIT_PROTOCOL_START,
12608 .doit = nl80211_crit_protocol_start,
12609 .policy = nl80211_policy,
12610 .flags = GENL_UNS_ADMIN_PERM,
12611 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12612 NL80211_FLAG_NEED_RTNL,
12613 },
12614 {
12615 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12616 .doit = nl80211_crit_protocol_stop,
12617 .policy = nl80211_policy,
12618 .flags = GENL_UNS_ADMIN_PERM,
12619 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12620 NL80211_FLAG_NEED_RTNL,
12621 },
12622 {
12623 .cmd = NL80211_CMD_GET_COALESCE,
12624 .doit = nl80211_get_coalesce,
12625 .policy = nl80211_policy,
12626 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12627 NL80211_FLAG_NEED_RTNL,
12628 },
12629 {
12630 .cmd = NL80211_CMD_SET_COALESCE,
12631 .doit = nl80211_set_coalesce,
12632 .policy = nl80211_policy,
12633 .flags = GENL_UNS_ADMIN_PERM,
12634 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12635 NL80211_FLAG_NEED_RTNL,
12636 },
12637 {
12638 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12639 .doit = nl80211_channel_switch,
12640 .policy = nl80211_policy,
12641 .flags = GENL_UNS_ADMIN_PERM,
12642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12643 NL80211_FLAG_NEED_RTNL,
12644 },
12645 {
12646 .cmd = NL80211_CMD_VENDOR,
12647 .doit = nl80211_vendor_cmd,
12648 .dumpit = nl80211_vendor_cmd_dump,
12649 .policy = nl80211_policy,
12650 .flags = GENL_UNS_ADMIN_PERM,
12651 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12652 NL80211_FLAG_NEED_RTNL,
12653 },
12654 {
12655 .cmd = NL80211_CMD_SET_QOS_MAP,
12656 .doit = nl80211_set_qos_map,
12657 .policy = nl80211_policy,
12658 .flags = GENL_UNS_ADMIN_PERM,
12659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12660 NL80211_FLAG_NEED_RTNL,
12661 },
12662 {
12663 .cmd = NL80211_CMD_ADD_TX_TS,
12664 .doit = nl80211_add_tx_ts,
12665 .policy = nl80211_policy,
12666 .flags = GENL_UNS_ADMIN_PERM,
12667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12668 NL80211_FLAG_NEED_RTNL,
12669 },
12670 {
12671 .cmd = NL80211_CMD_DEL_TX_TS,
12672 .doit = nl80211_del_tx_ts,
12673 .policy = nl80211_policy,
12674 .flags = GENL_UNS_ADMIN_PERM,
12675 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12676 NL80211_FLAG_NEED_RTNL,
12677 },
12678 {
12679 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12680 .doit = nl80211_tdls_channel_switch,
12681 .policy = nl80211_policy,
12682 .flags = GENL_UNS_ADMIN_PERM,
12683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12684 NL80211_FLAG_NEED_RTNL,
12685 },
12686 {
12687 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12688 .doit = nl80211_tdls_cancel_channel_switch,
12689 .policy = nl80211_policy,
12690 .flags = GENL_UNS_ADMIN_PERM,
12691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12692 NL80211_FLAG_NEED_RTNL,
12693 },
12694 {
12695 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12696 .doit = nl80211_set_multicast_to_unicast,
12697 .policy = nl80211_policy,
12698 .flags = GENL_UNS_ADMIN_PERM,
12699 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12700 NL80211_FLAG_NEED_RTNL,
12701 },
12702 };
12703
12704 static struct genl_family nl80211_fam __ro_after_init = {
12705 .name = NL80211_GENL_NAME, /* have users key off the name instead */
12706 .hdrsize = 0, /* no private header */
12707 .version = 1, /* no particular meaning now */
12708 .maxattr = NL80211_ATTR_MAX,
12709 .netnsok = true,
12710 .pre_doit = nl80211_pre_doit,
12711 .post_doit = nl80211_post_doit,
12712 .module = THIS_MODULE,
12713 .ops = nl80211_ops,
12714 .n_ops = ARRAY_SIZE(nl80211_ops),
12715 .mcgrps = nl80211_mcgrps,
12716 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12717 };
12718
12719 /* notification functions */
12720
12721 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12722 enum nl80211_commands cmd)
12723 {
12724 struct sk_buff *msg;
12725 struct nl80211_dump_wiphy_state state = {};
12726
12727 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12728 cmd != NL80211_CMD_DEL_WIPHY);
12729
12730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12731 if (!msg)
12732 return;
12733
12734 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12735 nlmsg_free(msg);
12736 return;
12737 }
12738
12739 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12740 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12741 }
12742
12743 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12744 struct wireless_dev *wdev,
12745 enum nl80211_commands cmd)
12746 {
12747 struct sk_buff *msg;
12748
12749 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12750 cmd != NL80211_CMD_DEL_INTERFACE);
12751
12752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12753 if (!msg)
12754 return;
12755
12756 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12757 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12758 nlmsg_free(msg);
12759 return;
12760 }
12761
12762 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12763 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12764 }
12765
12766 static int nl80211_add_scan_req(struct sk_buff *msg,
12767 struct cfg80211_registered_device *rdev)
12768 {
12769 struct cfg80211_scan_request *req = rdev->scan_req;
12770 struct nlattr *nest;
12771 int i;
12772
12773 if (WARN_ON(!req))
12774 return 0;
12775
12776 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12777 if (!nest)
12778 goto nla_put_failure;
12779 for (i = 0; i < req->n_ssids; i++) {
12780 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12781 goto nla_put_failure;
12782 }
12783 nla_nest_end(msg, nest);
12784
12785 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12786 if (!nest)
12787 goto nla_put_failure;
12788 for (i = 0; i < req->n_channels; i++) {
12789 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12790 goto nla_put_failure;
12791 }
12792 nla_nest_end(msg, nest);
12793
12794 if (req->ie &&
12795 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12796 goto nla_put_failure;
12797
12798 if (req->flags &&
12799 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12800 goto nla_put_failure;
12801
12802 if (req->info.scan_start_tsf &&
12803 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12804 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12805 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12806 req->info.tsf_bssid)))
12807 goto nla_put_failure;
12808
12809 return 0;
12810 nla_put_failure:
12811 return -ENOBUFS;
12812 }
12813
12814 static int nl80211_send_scan_msg(struct sk_buff *msg,
12815 struct cfg80211_registered_device *rdev,
12816 struct wireless_dev *wdev,
12817 u32 portid, u32 seq, int flags,
12818 u32 cmd)
12819 {
12820 void *hdr;
12821
12822 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12823 if (!hdr)
12824 return -1;
12825
12826 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12827 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12828 wdev->netdev->ifindex)) ||
12829 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12830 NL80211_ATTR_PAD))
12831 goto nla_put_failure;
12832
12833 /* ignore errors and send incomplete event anyway */
12834 nl80211_add_scan_req(msg, rdev);
12835
12836 genlmsg_end(msg, hdr);
12837 return 0;
12838
12839 nla_put_failure:
12840 genlmsg_cancel(msg, hdr);
12841 return -EMSGSIZE;
12842 }
12843
12844 static int
12845 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12846 struct cfg80211_registered_device *rdev,
12847 struct net_device *netdev,
12848 u32 portid, u32 seq, int flags, u32 cmd)
12849 {
12850 void *hdr;
12851
12852 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12853 if (!hdr)
12854 return -1;
12855
12856 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12857 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12858 goto nla_put_failure;
12859
12860 genlmsg_end(msg, hdr);
12861 return 0;
12862
12863 nla_put_failure:
12864 genlmsg_cancel(msg, hdr);
12865 return -EMSGSIZE;
12866 }
12867
12868 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12869 struct wireless_dev *wdev)
12870 {
12871 struct sk_buff *msg;
12872
12873 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12874 if (!msg)
12875 return;
12876
12877 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12878 NL80211_CMD_TRIGGER_SCAN) < 0) {
12879 nlmsg_free(msg);
12880 return;
12881 }
12882
12883 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12884 NL80211_MCGRP_SCAN, GFP_KERNEL);
12885 }
12886
12887 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12888 struct wireless_dev *wdev, bool aborted)
12889 {
12890 struct sk_buff *msg;
12891
12892 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12893 if (!msg)
12894 return NULL;
12895
12896 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12897 aborted ? NL80211_CMD_SCAN_ABORTED :
12898 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12899 nlmsg_free(msg);
12900 return NULL;
12901 }
12902
12903 return msg;
12904 }
12905
12906 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12907 struct sk_buff *msg)
12908 {
12909 if (!msg)
12910 return;
12911
12912 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12913 NL80211_MCGRP_SCAN, GFP_KERNEL);
12914 }
12915
12916 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12917 struct net_device *netdev)
12918 {
12919 struct sk_buff *msg;
12920
12921 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12922 if (!msg)
12923 return;
12924
12925 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12926 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12927 nlmsg_free(msg);
12928 return;
12929 }
12930
12931 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12932 NL80211_MCGRP_SCAN, GFP_KERNEL);
12933 }
12934
12935 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12936 struct net_device *netdev, u32 cmd)
12937 {
12938 struct sk_buff *msg;
12939
12940 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12941 if (!msg)
12942 return;
12943
12944 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12945 nlmsg_free(msg);
12946 return;
12947 }
12948
12949 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12950 NL80211_MCGRP_SCAN, GFP_KERNEL);
12951 }
12952
12953 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12954 struct regulatory_request *request)
12955 {
12956 /* Userspace can always count this one always being set */
12957 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12958 goto nla_put_failure;
12959
12960 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12961 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12962 NL80211_REGDOM_TYPE_WORLD))
12963 goto nla_put_failure;
12964 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12965 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12966 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12967 goto nla_put_failure;
12968 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12969 request->intersect) {
12970 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12971 NL80211_REGDOM_TYPE_INTERSECTION))
12972 goto nla_put_failure;
12973 } else {
12974 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12975 NL80211_REGDOM_TYPE_COUNTRY) ||
12976 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12977 request->alpha2))
12978 goto nla_put_failure;
12979 }
12980
12981 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12982 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12983
12984 if (wiphy &&
12985 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12986 goto nla_put_failure;
12987
12988 if (wiphy &&
12989 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12990 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12991 goto nla_put_failure;
12992 }
12993
12994 return true;
12995
12996 nla_put_failure:
12997 return false;
12998 }
12999
13000 /*
13001 * This can happen on global regulatory changes or device specific settings
13002 * based on custom regulatory domains.
13003 */
13004 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13005 struct regulatory_request *request)
13006 {
13007 struct sk_buff *msg;
13008 void *hdr;
13009
13010 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13011 if (!msg)
13012 return;
13013
13014 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13015 if (!hdr) {
13016 nlmsg_free(msg);
13017 return;
13018 }
13019
13020 if (nl80211_reg_change_event_fill(msg, request) == false)
13021 goto nla_put_failure;
13022
13023 genlmsg_end(msg, hdr);
13024
13025 rcu_read_lock();
13026 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13027 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13028 rcu_read_unlock();
13029
13030 return;
13031
13032 nla_put_failure:
13033 genlmsg_cancel(msg, hdr);
13034 nlmsg_free(msg);
13035 }
13036
13037 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13038 struct net_device *netdev,
13039 const u8 *buf, size_t len,
13040 enum nl80211_commands cmd, gfp_t gfp,
13041 int uapsd_queues)
13042 {
13043 struct sk_buff *msg;
13044 void *hdr;
13045
13046 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13047 if (!msg)
13048 return;
13049
13050 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13051 if (!hdr) {
13052 nlmsg_free(msg);
13053 return;
13054 }
13055
13056 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13057 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13058 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13059 goto nla_put_failure;
13060
13061 if (uapsd_queues >= 0) {
13062 struct nlattr *nla_wmm =
13063 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13064 if (!nla_wmm)
13065 goto nla_put_failure;
13066
13067 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13068 uapsd_queues))
13069 goto nla_put_failure;
13070
13071 nla_nest_end(msg, nla_wmm);
13072 }
13073
13074 genlmsg_end(msg, hdr);
13075
13076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13077 NL80211_MCGRP_MLME, gfp);
13078 return;
13079
13080 nla_put_failure:
13081 genlmsg_cancel(msg, hdr);
13082 nlmsg_free(msg);
13083 }
13084
13085 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13086 struct net_device *netdev, const u8 *buf,
13087 size_t len, gfp_t gfp)
13088 {
13089 nl80211_send_mlme_event(rdev, netdev, buf, len,
13090 NL80211_CMD_AUTHENTICATE, gfp, -1);
13091 }
13092
13093 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13094 struct net_device *netdev, const u8 *buf,
13095 size_t len, gfp_t gfp, int uapsd_queues)
13096 {
13097 nl80211_send_mlme_event(rdev, netdev, buf, len,
13098 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13099 }
13100
13101 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13102 struct net_device *netdev, const u8 *buf,
13103 size_t len, gfp_t gfp)
13104 {
13105 nl80211_send_mlme_event(rdev, netdev, buf, len,
13106 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13107 }
13108
13109 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13110 struct net_device *netdev, const u8 *buf,
13111 size_t len, gfp_t gfp)
13112 {
13113 nl80211_send_mlme_event(rdev, netdev, buf, len,
13114 NL80211_CMD_DISASSOCIATE, gfp, -1);
13115 }
13116
13117 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13118 size_t len)
13119 {
13120 struct wireless_dev *wdev = dev->ieee80211_ptr;
13121 struct wiphy *wiphy = wdev->wiphy;
13122 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13123 const struct ieee80211_mgmt *mgmt = (void *)buf;
13124 u32 cmd;
13125
13126 if (WARN_ON(len < 2))
13127 return;
13128
13129 if (ieee80211_is_deauth(mgmt->frame_control))
13130 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13131 else
13132 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13133
13134 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13135 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13136 }
13137 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13138
13139 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13140 struct net_device *netdev, int cmd,
13141 const u8 *addr, gfp_t gfp)
13142 {
13143 struct sk_buff *msg;
13144 void *hdr;
13145
13146 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13147 if (!msg)
13148 return;
13149
13150 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13151 if (!hdr) {
13152 nlmsg_free(msg);
13153 return;
13154 }
13155
13156 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13157 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13158 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13159 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13160 goto nla_put_failure;
13161
13162 genlmsg_end(msg, hdr);
13163
13164 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13165 NL80211_MCGRP_MLME, gfp);
13166 return;
13167
13168 nla_put_failure:
13169 genlmsg_cancel(msg, hdr);
13170 nlmsg_free(msg);
13171 }
13172
13173 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13174 struct net_device *netdev, const u8 *addr,
13175 gfp_t gfp)
13176 {
13177 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13178 addr, gfp);
13179 }
13180
13181 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13182 struct net_device *netdev, const u8 *addr,
13183 gfp_t gfp)
13184 {
13185 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13186 addr, gfp);
13187 }
13188
13189 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13190 struct net_device *netdev, const u8 *bssid,
13191 const u8 *req_ie, size_t req_ie_len,
13192 const u8 *resp_ie, size_t resp_ie_len,
13193 int status, gfp_t gfp)
13194 {
13195 struct sk_buff *msg;
13196 void *hdr;
13197
13198 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13199 if (!msg)
13200 return;
13201
13202 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13203 if (!hdr) {
13204 nlmsg_free(msg);
13205 return;
13206 }
13207
13208 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13209 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13210 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13211 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13212 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13213 status) ||
13214 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13215 (req_ie &&
13216 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13217 (resp_ie &&
13218 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13219 goto nla_put_failure;
13220
13221 genlmsg_end(msg, hdr);
13222
13223 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13224 NL80211_MCGRP_MLME, gfp);
13225 return;
13226
13227 nla_put_failure:
13228 genlmsg_cancel(msg, hdr);
13229 nlmsg_free(msg);
13230 }
13231
13232 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13233 struct net_device *netdev, const u8 *bssid,
13234 const u8 *req_ie, size_t req_ie_len,
13235 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13236 {
13237 struct sk_buff *msg;
13238 void *hdr;
13239
13240 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13241 if (!msg)
13242 return;
13243
13244 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13245 if (!hdr) {
13246 nlmsg_free(msg);
13247 return;
13248 }
13249
13250 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13251 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13252 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13253 (req_ie &&
13254 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13255 (resp_ie &&
13256 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13257 goto nla_put_failure;
13258
13259 genlmsg_end(msg, hdr);
13260
13261 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13262 NL80211_MCGRP_MLME, gfp);
13263 return;
13264
13265 nla_put_failure:
13266 genlmsg_cancel(msg, hdr);
13267 nlmsg_free(msg);
13268 }
13269
13270 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13271 struct net_device *netdev, u16 reason,
13272 const u8 *ie, size_t ie_len, bool from_ap)
13273 {
13274 struct sk_buff *msg;
13275 void *hdr;
13276
13277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13278 if (!msg)
13279 return;
13280
13281 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13282 if (!hdr) {
13283 nlmsg_free(msg);
13284 return;
13285 }
13286
13287 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13288 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13289 (from_ap && reason &&
13290 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13291 (from_ap &&
13292 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13293 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13294 goto nla_put_failure;
13295
13296 genlmsg_end(msg, hdr);
13297
13298 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13299 NL80211_MCGRP_MLME, GFP_KERNEL);
13300 return;
13301
13302 nla_put_failure:
13303 genlmsg_cancel(msg, hdr);
13304 nlmsg_free(msg);
13305 }
13306
13307 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13308 struct net_device *netdev, const u8 *bssid,
13309 gfp_t gfp)
13310 {
13311 struct sk_buff *msg;
13312 void *hdr;
13313
13314 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13315 if (!msg)
13316 return;
13317
13318 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13319 if (!hdr) {
13320 nlmsg_free(msg);
13321 return;
13322 }
13323
13324 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13325 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13326 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13327 goto nla_put_failure;
13328
13329 genlmsg_end(msg, hdr);
13330
13331 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13332 NL80211_MCGRP_MLME, gfp);
13333 return;
13334
13335 nla_put_failure:
13336 genlmsg_cancel(msg, hdr);
13337 nlmsg_free(msg);
13338 }
13339
13340 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13341 const u8* ie, u8 ie_len, gfp_t gfp)
13342 {
13343 struct wireless_dev *wdev = dev->ieee80211_ptr;
13344 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13345 struct sk_buff *msg;
13346 void *hdr;
13347
13348 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13349 return;
13350
13351 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13352
13353 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13354 if (!msg)
13355 return;
13356
13357 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13358 if (!hdr) {
13359 nlmsg_free(msg);
13360 return;
13361 }
13362
13363 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13364 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13365 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13366 (ie_len && ie &&
13367 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13368 goto nla_put_failure;
13369
13370 genlmsg_end(msg, hdr);
13371
13372 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13373 NL80211_MCGRP_MLME, gfp);
13374 return;
13375
13376 nla_put_failure:
13377 genlmsg_cancel(msg, hdr);
13378 nlmsg_free(msg);
13379 }
13380 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13381
13382 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13383 struct net_device *netdev, const u8 *addr,
13384 enum nl80211_key_type key_type, int key_id,
13385 const u8 *tsc, gfp_t gfp)
13386 {
13387 struct sk_buff *msg;
13388 void *hdr;
13389
13390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13391 if (!msg)
13392 return;
13393
13394 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13395 if (!hdr) {
13396 nlmsg_free(msg);
13397 return;
13398 }
13399
13400 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13401 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13402 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13403 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13404 (key_id != -1 &&
13405 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13406 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13407 goto nla_put_failure;
13408
13409 genlmsg_end(msg, hdr);
13410
13411 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13412 NL80211_MCGRP_MLME, gfp);
13413 return;
13414
13415 nla_put_failure:
13416 genlmsg_cancel(msg, hdr);
13417 nlmsg_free(msg);
13418 }
13419
13420 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13421 struct ieee80211_channel *channel_before,
13422 struct ieee80211_channel *channel_after)
13423 {
13424 struct sk_buff *msg;
13425 void *hdr;
13426 struct nlattr *nl_freq;
13427
13428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13429 if (!msg)
13430 return;
13431
13432 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13433 if (!hdr) {
13434 nlmsg_free(msg);
13435 return;
13436 }
13437
13438 /*
13439 * Since we are applying the beacon hint to a wiphy we know its
13440 * wiphy_idx is valid
13441 */
13442 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13443 goto nla_put_failure;
13444
13445 /* Before */
13446 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13447 if (!nl_freq)
13448 goto nla_put_failure;
13449 if (nl80211_msg_put_channel(msg, channel_before, false))
13450 goto nla_put_failure;
13451 nla_nest_end(msg, nl_freq);
13452
13453 /* After */
13454 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13455 if (!nl_freq)
13456 goto nla_put_failure;
13457 if (nl80211_msg_put_channel(msg, channel_after, false))
13458 goto nla_put_failure;
13459 nla_nest_end(msg, nl_freq);
13460
13461 genlmsg_end(msg, hdr);
13462
13463 rcu_read_lock();
13464 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13465 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13466 rcu_read_unlock();
13467
13468 return;
13469
13470 nla_put_failure:
13471 genlmsg_cancel(msg, hdr);
13472 nlmsg_free(msg);
13473 }
13474
13475 static void nl80211_send_remain_on_chan_event(
13476 int cmd, struct cfg80211_registered_device *rdev,
13477 struct wireless_dev *wdev, u64 cookie,
13478 struct ieee80211_channel *chan,
13479 unsigned int duration, gfp_t gfp)
13480 {
13481 struct sk_buff *msg;
13482 void *hdr;
13483
13484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13485 if (!msg)
13486 return;
13487
13488 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13489 if (!hdr) {
13490 nlmsg_free(msg);
13491 return;
13492 }
13493
13494 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13495 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13496 wdev->netdev->ifindex)) ||
13497 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13498 NL80211_ATTR_PAD) ||
13499 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13500 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13501 NL80211_CHAN_NO_HT) ||
13502 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13503 NL80211_ATTR_PAD))
13504 goto nla_put_failure;
13505
13506 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13507 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13508 goto nla_put_failure;
13509
13510 genlmsg_end(msg, hdr);
13511
13512 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13513 NL80211_MCGRP_MLME, gfp);
13514 return;
13515
13516 nla_put_failure:
13517 genlmsg_cancel(msg, hdr);
13518 nlmsg_free(msg);
13519 }
13520
13521 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13522 struct ieee80211_channel *chan,
13523 unsigned int duration, gfp_t gfp)
13524 {
13525 struct wiphy *wiphy = wdev->wiphy;
13526 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13527
13528 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
13529 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13530 rdev, wdev, cookie, chan,
13531 duration, gfp);
13532 }
13533 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13534
13535 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13536 struct ieee80211_channel *chan,
13537 gfp_t gfp)
13538 {
13539 struct wiphy *wiphy = wdev->wiphy;
13540 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13541
13542 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13543 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13544 rdev, wdev, cookie, chan, 0, gfp);
13545 }
13546 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13547
13548 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13549 struct station_info *sinfo, gfp_t gfp)
13550 {
13551 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13552 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13553 struct sk_buff *msg;
13554
13555 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13556
13557 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13558 if (!msg)
13559 return;
13560
13561 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13562 rdev, dev, mac_addr, sinfo) < 0) {
13563 nlmsg_free(msg);
13564 return;
13565 }
13566
13567 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13568 NL80211_MCGRP_MLME, gfp);
13569 }
13570 EXPORT_SYMBOL(cfg80211_new_sta);
13571
13572 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13573 struct station_info *sinfo, gfp_t gfp)
13574 {
13575 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13576 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13577 struct sk_buff *msg;
13578 struct station_info empty_sinfo = {};
13579
13580 if (!sinfo)
13581 sinfo = &empty_sinfo;
13582
13583 trace_cfg80211_del_sta(dev, mac_addr);
13584
13585 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13586 if (!msg)
13587 return;
13588
13589 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13590 rdev, dev, mac_addr, sinfo) < 0) {
13591 nlmsg_free(msg);
13592 return;
13593 }
13594
13595 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13596 NL80211_MCGRP_MLME, gfp);
13597 }
13598 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13599
13600 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13601 enum nl80211_connect_failed_reason reason,
13602 gfp_t gfp)
13603 {
13604 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13605 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13606 struct sk_buff *msg;
13607 void *hdr;
13608
13609 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13610 if (!msg)
13611 return;
13612
13613 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13614 if (!hdr) {
13615 nlmsg_free(msg);
13616 return;
13617 }
13618
13619 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13620 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13621 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13622 goto nla_put_failure;
13623
13624 genlmsg_end(msg, hdr);
13625
13626 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13627 NL80211_MCGRP_MLME, gfp);
13628 return;
13629
13630 nla_put_failure:
13631 genlmsg_cancel(msg, hdr);
13632 nlmsg_free(msg);
13633 }
13634 EXPORT_SYMBOL(cfg80211_conn_failed);
13635
13636 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13637 const u8 *addr, gfp_t gfp)
13638 {
13639 struct wireless_dev *wdev = dev->ieee80211_ptr;
13640 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13641 struct sk_buff *msg;
13642 void *hdr;
13643 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13644
13645 if (!nlportid)
13646 return false;
13647
13648 msg = nlmsg_new(100, gfp);
13649 if (!msg)
13650 return true;
13651
13652 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13653 if (!hdr) {
13654 nlmsg_free(msg);
13655 return true;
13656 }
13657
13658 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13659 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13660 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13661 goto nla_put_failure;
13662
13663 genlmsg_end(msg, hdr);
13664 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13665 return true;
13666
13667 nla_put_failure:
13668 genlmsg_cancel(msg, hdr);
13669 nlmsg_free(msg);
13670 return true;
13671 }
13672
13673 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13674 const u8 *addr, gfp_t gfp)
13675 {
13676 struct wireless_dev *wdev = dev->ieee80211_ptr;
13677 bool ret;
13678
13679 trace_cfg80211_rx_spurious_frame(dev, addr);
13680
13681 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13682 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13683 trace_cfg80211_return_bool(false);
13684 return false;
13685 }
13686 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13687 addr, gfp);
13688 trace_cfg80211_return_bool(ret);
13689 return ret;
13690 }
13691 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13692
13693 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13694 const u8 *addr, gfp_t gfp)
13695 {
13696 struct wireless_dev *wdev = dev->ieee80211_ptr;
13697 bool ret;
13698
13699 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13700
13701 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13702 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13703 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13704 trace_cfg80211_return_bool(false);
13705 return false;
13706 }
13707 ret = __nl80211_unexpected_frame(dev,
13708 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13709 addr, gfp);
13710 trace_cfg80211_return_bool(ret);
13711 return ret;
13712 }
13713 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13714
13715 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13716 struct wireless_dev *wdev, u32 nlportid,
13717 int freq, int sig_dbm,
13718 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13719 {
13720 struct net_device *netdev = wdev->netdev;
13721 struct sk_buff *msg;
13722 void *hdr;
13723
13724 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13725 if (!msg)
13726 return -ENOMEM;
13727
13728 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13729 if (!hdr) {
13730 nlmsg_free(msg);
13731 return -ENOMEM;
13732 }
13733
13734 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13735 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13736 netdev->ifindex)) ||
13737 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13738 NL80211_ATTR_PAD) ||
13739 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13740 (sig_dbm &&
13741 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13742 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13743 (flags &&
13744 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13745 goto nla_put_failure;
13746
13747 genlmsg_end(msg, hdr);
13748
13749 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13750
13751 nla_put_failure:
13752 genlmsg_cancel(msg, hdr);
13753 nlmsg_free(msg);
13754 return -ENOBUFS;
13755 }
13756
13757 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13758 const u8 *buf, size_t len, bool ack, gfp_t gfp)
13759 {
13760 struct wiphy *wiphy = wdev->wiphy;
13761 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13762 struct net_device *netdev = wdev->netdev;
13763 struct sk_buff *msg;
13764 void *hdr;
13765
13766 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13767
13768 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13769 if (!msg)
13770 return;
13771
13772 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13773 if (!hdr) {
13774 nlmsg_free(msg);
13775 return;
13776 }
13777
13778 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13779 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13780 netdev->ifindex)) ||
13781 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13782 NL80211_ATTR_PAD) ||
13783 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13784 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13785 NL80211_ATTR_PAD) ||
13786 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13787 goto nla_put_failure;
13788
13789 genlmsg_end(msg, hdr);
13790
13791 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13792 NL80211_MCGRP_MLME, gfp);
13793 return;
13794
13795 nla_put_failure:
13796 genlmsg_cancel(msg, hdr);
13797 nlmsg_free(msg);
13798 }
13799 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13800
13801 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13802 const char *mac, gfp_t gfp)
13803 {
13804 struct wireless_dev *wdev = dev->ieee80211_ptr;
13805 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13806 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13807 void **cb;
13808
13809 if (!msg)
13810 return NULL;
13811
13812 cb = (void **)msg->cb;
13813
13814 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13815 if (!cb[0]) {
13816 nlmsg_free(msg);
13817 return NULL;
13818 }
13819
13820 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13821 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13822 goto nla_put_failure;
13823
13824 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13825 goto nla_put_failure;
13826
13827 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13828 if (!cb[1])
13829 goto nla_put_failure;
13830
13831 cb[2] = rdev;
13832
13833 return msg;
13834 nla_put_failure:
13835 nlmsg_free(msg);
13836 return NULL;
13837 }
13838
13839 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13840 {
13841 void **cb = (void **)msg->cb;
13842 struct cfg80211_registered_device *rdev = cb[2];
13843
13844 nla_nest_end(msg, cb[1]);
13845 genlmsg_end(msg, cb[0]);
13846
13847 memset(msg->cb, 0, sizeof(msg->cb));
13848
13849 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13850 NL80211_MCGRP_MLME, gfp);
13851 }
13852
13853 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13854 enum nl80211_cqm_rssi_threshold_event rssi_event,
13855 gfp_t gfp)
13856 {
13857 struct sk_buff *msg;
13858
13859 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13860
13861 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13862 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13863 return;
13864
13865 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13866 if (!msg)
13867 return;
13868
13869 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13870 rssi_event))
13871 goto nla_put_failure;
13872
13873 cfg80211_send_cqm(msg, gfp);
13874
13875 return;
13876
13877 nla_put_failure:
13878 nlmsg_free(msg);
13879 }
13880 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13881
13882 void cfg80211_cqm_txe_notify(struct net_device *dev,
13883 const u8 *peer, u32 num_packets,
13884 u32 rate, u32 intvl, gfp_t gfp)
13885 {
13886 struct sk_buff *msg;
13887
13888 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13889 if (!msg)
13890 return;
13891
13892 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13893 goto nla_put_failure;
13894
13895 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13896 goto nla_put_failure;
13897
13898 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13899 goto nla_put_failure;
13900
13901 cfg80211_send_cqm(msg, gfp);
13902 return;
13903
13904 nla_put_failure:
13905 nlmsg_free(msg);
13906 }
13907 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13908
13909 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13910 const u8 *peer, u32 num_packets, gfp_t gfp)
13911 {
13912 struct sk_buff *msg;
13913
13914 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13915
13916 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13917 if (!msg)
13918 return;
13919
13920 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13921 goto nla_put_failure;
13922
13923 cfg80211_send_cqm(msg, gfp);
13924 return;
13925
13926 nla_put_failure:
13927 nlmsg_free(msg);
13928 }
13929 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13930
13931 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13932 {
13933 struct sk_buff *msg;
13934
13935 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13936 if (!msg)
13937 return;
13938
13939 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13940 goto nla_put_failure;
13941
13942 cfg80211_send_cqm(msg, gfp);
13943 return;
13944
13945 nla_put_failure:
13946 nlmsg_free(msg);
13947 }
13948 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13949
13950 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13951 struct net_device *netdev, const u8 *bssid,
13952 const u8 *replay_ctr, gfp_t gfp)
13953 {
13954 struct sk_buff *msg;
13955 struct nlattr *rekey_attr;
13956 void *hdr;
13957
13958 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13959 if (!msg)
13960 return;
13961
13962 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13963 if (!hdr) {
13964 nlmsg_free(msg);
13965 return;
13966 }
13967
13968 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13969 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13970 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13971 goto nla_put_failure;
13972
13973 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13974 if (!rekey_attr)
13975 goto nla_put_failure;
13976
13977 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13978 NL80211_REPLAY_CTR_LEN, replay_ctr))
13979 goto nla_put_failure;
13980
13981 nla_nest_end(msg, rekey_attr);
13982
13983 genlmsg_end(msg, hdr);
13984
13985 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13986 NL80211_MCGRP_MLME, gfp);
13987 return;
13988
13989 nla_put_failure:
13990 genlmsg_cancel(msg, hdr);
13991 nlmsg_free(msg);
13992 }
13993
13994 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13995 const u8 *replay_ctr, gfp_t gfp)
13996 {
13997 struct wireless_dev *wdev = dev->ieee80211_ptr;
13998 struct wiphy *wiphy = wdev->wiphy;
13999 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14000
14001 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14002 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14003 }
14004 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14005
14006 static void
14007 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14008 struct net_device *netdev, int index,
14009 const u8 *bssid, bool preauth, gfp_t gfp)
14010 {
14011 struct sk_buff *msg;
14012 struct nlattr *attr;
14013 void *hdr;
14014
14015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14016 if (!msg)
14017 return;
14018
14019 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14020 if (!hdr) {
14021 nlmsg_free(msg);
14022 return;
14023 }
14024
14025 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14026 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14027 goto nla_put_failure;
14028
14029 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14030 if (!attr)
14031 goto nla_put_failure;
14032
14033 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14034 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14035 (preauth &&
14036 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14037 goto nla_put_failure;
14038
14039 nla_nest_end(msg, attr);
14040
14041 genlmsg_end(msg, hdr);
14042
14043 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14044 NL80211_MCGRP_MLME, gfp);
14045 return;
14046
14047 nla_put_failure:
14048 genlmsg_cancel(msg, hdr);
14049 nlmsg_free(msg);
14050 }
14051
14052 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14053 const u8 *bssid, bool preauth, gfp_t gfp)
14054 {
14055 struct wireless_dev *wdev = dev->ieee80211_ptr;
14056 struct wiphy *wiphy = wdev->wiphy;
14057 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14058
14059 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14060 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14061 }
14062 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14063
14064 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14065 struct net_device *netdev,
14066 struct cfg80211_chan_def *chandef,
14067 gfp_t gfp,
14068 enum nl80211_commands notif,
14069 u8 count)
14070 {
14071 struct sk_buff *msg;
14072 void *hdr;
14073
14074 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14075 if (!msg)
14076 return;
14077
14078 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14079 if (!hdr) {
14080 nlmsg_free(msg);
14081 return;
14082 }
14083
14084 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14085 goto nla_put_failure;
14086
14087 if (nl80211_send_chandef(msg, chandef))
14088 goto nla_put_failure;
14089
14090 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14091 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14092 goto nla_put_failure;
14093
14094 genlmsg_end(msg, hdr);
14095
14096 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14097 NL80211_MCGRP_MLME, gfp);
14098 return;
14099
14100 nla_put_failure:
14101 genlmsg_cancel(msg, hdr);
14102 nlmsg_free(msg);
14103 }
14104
14105 void cfg80211_ch_switch_notify(struct net_device *dev,
14106 struct cfg80211_chan_def *chandef)
14107 {
14108 struct wireless_dev *wdev = dev->ieee80211_ptr;
14109 struct wiphy *wiphy = wdev->wiphy;
14110 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14111
14112 ASSERT_WDEV_LOCK(wdev);
14113
14114 trace_cfg80211_ch_switch_notify(dev, chandef);
14115
14116 wdev->chandef = *chandef;
14117 wdev->preset_chandef = *chandef;
14118 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14119 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14120 }
14121 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14122
14123 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14124 struct cfg80211_chan_def *chandef,
14125 u8 count)
14126 {
14127 struct wireless_dev *wdev = dev->ieee80211_ptr;
14128 struct wiphy *wiphy = wdev->wiphy;
14129 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14130
14131 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14132
14133 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14134 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14135 }
14136 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14137
14138 void
14139 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14140 const struct cfg80211_chan_def *chandef,
14141 enum nl80211_radar_event event,
14142 struct net_device *netdev, gfp_t gfp)
14143 {
14144 struct sk_buff *msg;
14145 void *hdr;
14146
14147 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14148 if (!msg)
14149 return;
14150
14151 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14152 if (!hdr) {
14153 nlmsg_free(msg);
14154 return;
14155 }
14156
14157 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14158 goto nla_put_failure;
14159
14160 /* NOP and radar events don't need a netdev parameter */
14161 if (netdev) {
14162 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14163
14164 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14165 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14166 NL80211_ATTR_PAD))
14167 goto nla_put_failure;
14168 }
14169
14170 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14171 goto nla_put_failure;
14172
14173 if (nl80211_send_chandef(msg, chandef))
14174 goto nla_put_failure;
14175
14176 genlmsg_end(msg, hdr);
14177
14178 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14179 NL80211_MCGRP_MLME, gfp);
14180 return;
14181
14182 nla_put_failure:
14183 genlmsg_cancel(msg, hdr);
14184 nlmsg_free(msg);
14185 }
14186
14187 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14188 u64 cookie, bool acked, gfp_t gfp)
14189 {
14190 struct wireless_dev *wdev = dev->ieee80211_ptr;
14191 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14192 struct sk_buff *msg;
14193 void *hdr;
14194
14195 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14196
14197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14198
14199 if (!msg)
14200 return;
14201
14202 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14203 if (!hdr) {
14204 nlmsg_free(msg);
14205 return;
14206 }
14207
14208 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14209 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14210 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14211 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14212 NL80211_ATTR_PAD) ||
14213 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14214 goto nla_put_failure;
14215
14216 genlmsg_end(msg, hdr);
14217
14218 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14219 NL80211_MCGRP_MLME, gfp);
14220 return;
14221
14222 nla_put_failure:
14223 genlmsg_cancel(msg, hdr);
14224 nlmsg_free(msg);
14225 }
14226 EXPORT_SYMBOL(cfg80211_probe_status);
14227
14228 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14229 const u8 *frame, size_t len,
14230 int freq, int sig_dbm)
14231 {
14232 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14233 struct sk_buff *msg;
14234 void *hdr;
14235 struct cfg80211_beacon_registration *reg;
14236
14237 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14238
14239 spin_lock_bh(&rdev->beacon_registrations_lock);
14240 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14241 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14242 if (!msg) {
14243 spin_unlock_bh(&rdev->beacon_registrations_lock);
14244 return;
14245 }
14246
14247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14248 if (!hdr)
14249 goto nla_put_failure;
14250
14251 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14252 (freq &&
14253 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14254 (sig_dbm &&
14255 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14256 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14257 goto nla_put_failure;
14258
14259 genlmsg_end(msg, hdr);
14260
14261 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14262 }
14263 spin_unlock_bh(&rdev->beacon_registrations_lock);
14264 return;
14265
14266 nla_put_failure:
14267 spin_unlock_bh(&rdev->beacon_registrations_lock);
14268 if (hdr)
14269 genlmsg_cancel(msg, hdr);
14270 nlmsg_free(msg);
14271 }
14272 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14273
14274 #ifdef CONFIG_PM
14275 static int cfg80211_net_detect_results(struct sk_buff *msg,
14276 struct cfg80211_wowlan_wakeup *wakeup)
14277 {
14278 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14279 struct nlattr *nl_results, *nl_match, *nl_freqs;
14280 int i, j;
14281
14282 nl_results = nla_nest_start(
14283 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14284 if (!nl_results)
14285 return -EMSGSIZE;
14286
14287 for (i = 0; i < nd->n_matches; i++) {
14288 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14289
14290 nl_match = nla_nest_start(msg, i);
14291 if (!nl_match)
14292 break;
14293
14294 /* The SSID attribute is optional in nl80211, but for
14295 * simplicity reasons it's always present in the
14296 * cfg80211 structure. If a driver can't pass the
14297 * SSID, that needs to be changed. A zero length SSID
14298 * is still a valid SSID (wildcard), so it cannot be
14299 * used for this purpose.
14300 */
14301 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14302 match->ssid.ssid)) {
14303 nla_nest_cancel(msg, nl_match);
14304 goto out;
14305 }
14306
14307 if (match->n_channels) {
14308 nl_freqs = nla_nest_start(
14309 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14310 if (!nl_freqs) {
14311 nla_nest_cancel(msg, nl_match);
14312 goto out;
14313 }
14314
14315 for (j = 0; j < match->n_channels; j++) {
14316 if (nla_put_u32(msg, j, match->channels[j])) {
14317 nla_nest_cancel(msg, nl_freqs);
14318 nla_nest_cancel(msg, nl_match);
14319 goto out;
14320 }
14321 }
14322
14323 nla_nest_end(msg, nl_freqs);
14324 }
14325
14326 nla_nest_end(msg, nl_match);
14327 }
14328
14329 out:
14330 nla_nest_end(msg, nl_results);
14331 return 0;
14332 }
14333
14334 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14335 struct cfg80211_wowlan_wakeup *wakeup,
14336 gfp_t gfp)
14337 {
14338 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14339 struct sk_buff *msg;
14340 void *hdr;
14341 int size = 200;
14342
14343 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14344
14345 if (wakeup)
14346 size += wakeup->packet_present_len;
14347
14348 msg = nlmsg_new(size, gfp);
14349 if (!msg)
14350 return;
14351
14352 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14353 if (!hdr)
14354 goto free_msg;
14355
14356 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14357 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14358 NL80211_ATTR_PAD))
14359 goto free_msg;
14360
14361 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14362 wdev->netdev->ifindex))
14363 goto free_msg;
14364
14365 if (wakeup) {
14366 struct nlattr *reasons;
14367
14368 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14369 if (!reasons)
14370 goto free_msg;
14371
14372 if (wakeup->disconnect &&
14373 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14374 goto free_msg;
14375 if (wakeup->magic_pkt &&
14376 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14377 goto free_msg;
14378 if (wakeup->gtk_rekey_failure &&
14379 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14380 goto free_msg;
14381 if (wakeup->eap_identity_req &&
14382 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14383 goto free_msg;
14384 if (wakeup->four_way_handshake &&
14385 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14386 goto free_msg;
14387 if (wakeup->rfkill_release &&
14388 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14389 goto free_msg;
14390
14391 if (wakeup->pattern_idx >= 0 &&
14392 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14393 wakeup->pattern_idx))
14394 goto free_msg;
14395
14396 if (wakeup->tcp_match &&
14397 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14398 goto free_msg;
14399
14400 if (wakeup->tcp_connlost &&
14401 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14402 goto free_msg;
14403
14404 if (wakeup->tcp_nomoretokens &&
14405 nla_put_flag(msg,
14406 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14407 goto free_msg;
14408
14409 if (wakeup->packet) {
14410 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14411 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14412
14413 if (!wakeup->packet_80211) {
14414 pkt_attr =
14415 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14416 len_attr =
14417 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14418 }
14419
14420 if (wakeup->packet_len &&
14421 nla_put_u32(msg, len_attr, wakeup->packet_len))
14422 goto free_msg;
14423
14424 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14425 wakeup->packet))
14426 goto free_msg;
14427 }
14428
14429 if (wakeup->net_detect &&
14430 cfg80211_net_detect_results(msg, wakeup))
14431 goto free_msg;
14432
14433 nla_nest_end(msg, reasons);
14434 }
14435
14436 genlmsg_end(msg, hdr);
14437
14438 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14439 NL80211_MCGRP_MLME, gfp);
14440 return;
14441
14442 free_msg:
14443 nlmsg_free(msg);
14444 }
14445 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14446 #endif
14447
14448 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14449 enum nl80211_tdls_operation oper,
14450 u16 reason_code, gfp_t gfp)
14451 {
14452 struct wireless_dev *wdev = dev->ieee80211_ptr;
14453 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14454 struct sk_buff *msg;
14455 void *hdr;
14456
14457 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14458 reason_code);
14459
14460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14461 if (!msg)
14462 return;
14463
14464 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14465 if (!hdr) {
14466 nlmsg_free(msg);
14467 return;
14468 }
14469
14470 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14471 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14472 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14473 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14474 (reason_code > 0 &&
14475 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14476 goto nla_put_failure;
14477
14478 genlmsg_end(msg, hdr);
14479
14480 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14481 NL80211_MCGRP_MLME, gfp);
14482 return;
14483
14484 nla_put_failure:
14485 genlmsg_cancel(msg, hdr);
14486 nlmsg_free(msg);
14487 }
14488 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14489
14490 static int nl80211_netlink_notify(struct notifier_block * nb,
14491 unsigned long state,
14492 void *_notify)
14493 {
14494 struct netlink_notify *notify = _notify;
14495 struct cfg80211_registered_device *rdev;
14496 struct wireless_dev *wdev;
14497 struct cfg80211_beacon_registration *reg, *tmp;
14498
14499 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14500 return NOTIFY_DONE;
14501
14502 rcu_read_lock();
14503
14504 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14505 bool schedule_destroy_work = false;
14506 struct cfg80211_sched_scan_request *sched_scan_req =
14507 rcu_dereference(rdev->sched_scan_req);
14508
14509 if (sched_scan_req && notify->portid &&
14510 sched_scan_req->owner_nlportid == notify->portid) {
14511 sched_scan_req->owner_nlportid = 0;
14512
14513 if (rdev->ops->sched_scan_stop &&
14514 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14515 schedule_work(&rdev->sched_scan_stop_wk);
14516 }
14517
14518 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14519 cfg80211_mlme_unregister_socket(wdev, notify->portid);
14520
14521 if (wdev->owner_nlportid == notify->portid)
14522 schedule_destroy_work = true;
14523 }
14524
14525 spin_lock_bh(&rdev->beacon_registrations_lock);
14526 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14527 list) {
14528 if (reg->nlportid == notify->portid) {
14529 list_del(&reg->list);
14530 kfree(reg);
14531 break;
14532 }
14533 }
14534 spin_unlock_bh(&rdev->beacon_registrations_lock);
14535
14536 if (schedule_destroy_work) {
14537 struct cfg80211_iface_destroy *destroy;
14538
14539 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14540 if (destroy) {
14541 destroy->nlportid = notify->portid;
14542 spin_lock(&rdev->destroy_list_lock);
14543 list_add(&destroy->list, &rdev->destroy_list);
14544 spin_unlock(&rdev->destroy_list_lock);
14545 schedule_work(&rdev->destroy_work);
14546 }
14547 }
14548 }
14549
14550 rcu_read_unlock();
14551
14552 /*
14553 * It is possible that the user space process that is controlling the
14554 * indoor setting disappeared, so notify the regulatory core.
14555 */
14556 regulatory_netlink_notify(notify->portid);
14557 return NOTIFY_OK;
14558 }
14559
14560 static struct notifier_block nl80211_netlink_notifier = {
14561 .notifier_call = nl80211_netlink_notify,
14562 };
14563
14564 void cfg80211_ft_event(struct net_device *netdev,
14565 struct cfg80211_ft_event_params *ft_event)
14566 {
14567 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14568 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14569 struct sk_buff *msg;
14570 void *hdr;
14571
14572 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14573
14574 if (!ft_event->target_ap)
14575 return;
14576
14577 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14578 if (!msg)
14579 return;
14580
14581 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14582 if (!hdr)
14583 goto out;
14584
14585 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14586 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14587 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14588 goto out;
14589
14590 if (ft_event->ies &&
14591 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14592 goto out;
14593 if (ft_event->ric_ies &&
14594 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14595 ft_event->ric_ies))
14596 goto out;
14597
14598 genlmsg_end(msg, hdr);
14599
14600 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14601 NL80211_MCGRP_MLME, GFP_KERNEL);
14602 return;
14603 out:
14604 nlmsg_free(msg);
14605 }
14606 EXPORT_SYMBOL(cfg80211_ft_event);
14607
14608 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14609 {
14610 struct cfg80211_registered_device *rdev;
14611 struct sk_buff *msg;
14612 void *hdr;
14613 u32 nlportid;
14614
14615 rdev = wiphy_to_rdev(wdev->wiphy);
14616 if (!rdev->crit_proto_nlportid)
14617 return;
14618
14619 nlportid = rdev->crit_proto_nlportid;
14620 rdev->crit_proto_nlportid = 0;
14621
14622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14623 if (!msg)
14624 return;
14625
14626 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14627 if (!hdr)
14628 goto nla_put_failure;
14629
14630 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14631 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14632 NL80211_ATTR_PAD))
14633 goto nla_put_failure;
14634
14635 genlmsg_end(msg, hdr);
14636
14637 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14638 return;
14639
14640 nla_put_failure:
14641 if (hdr)
14642 genlmsg_cancel(msg, hdr);
14643 nlmsg_free(msg);
14644 }
14645 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14646
14647 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14648 {
14649 struct wiphy *wiphy = wdev->wiphy;
14650 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14651 struct sk_buff *msg;
14652 void *hdr;
14653
14654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14655 if (!msg)
14656 return;
14657
14658 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14659 if (!hdr)
14660 goto out;
14661
14662 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14663 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14664 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14665 NL80211_ATTR_PAD))
14666 goto out;
14667
14668 genlmsg_end(msg, hdr);
14669
14670 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14671 NL80211_MCGRP_MLME, GFP_KERNEL);
14672 return;
14673 out:
14674 nlmsg_free(msg);
14675 }
14676
14677 /* initialisation/exit functions */
14678
14679 int __init nl80211_init(void)
14680 {
14681 int err;
14682
14683 err = genl_register_family(&nl80211_fam);
14684 if (err)
14685 return err;
14686
14687 err = netlink_register_notifier(&nl80211_netlink_notifier);
14688 if (err)
14689 goto err_out;
14690
14691 return 0;
14692 err_out:
14693 genl_unregister_family(&nl80211_fam);
14694 return err;
14695 }
14696
14697 void nl80211_exit(void)
14698 {
14699 netlink_unregister_notifier(&nl80211_netlink_notifier);
14700 genl_unregister_family(&nl80211_fam);
14701 }
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