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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm...
[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2016 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 rtnl_lock();
544
545 if (!cb->args[0]) {
546 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
547 genl_family_attrbuf(&nl80211_fam),
548 nl80211_fam.maxattr, nl80211_policy);
549 if (err)
550 goto out_unlock;
551
552 *wdev = __cfg80211_wdev_from_attrs(
553 sock_net(skb->sk),
554 genl_family_attrbuf(&nl80211_fam));
555 if (IS_ERR(*wdev)) {
556 err = PTR_ERR(*wdev);
557 goto out_unlock;
558 }
559 *rdev = wiphy_to_rdev((*wdev)->wiphy);
560 /* 0 is the first index - add 1 to parse only once */
561 cb->args[0] = (*rdev)->wiphy_idx + 1;
562 cb->args[1] = (*wdev)->identifier;
563 } else {
564 /* subtract the 1 again here */
565 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
566 struct wireless_dev *tmp;
567
568 if (!wiphy) {
569 err = -ENODEV;
570 goto out_unlock;
571 }
572 *rdev = wiphy_to_rdev(wiphy);
573 *wdev = NULL;
574
575 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
576 if (tmp->identifier == cb->args[1]) {
577 *wdev = tmp;
578 break;
579 }
580 }
581
582 if (!*wdev) {
583 err = -ENODEV;
584 goto out_unlock;
585 }
586 }
587
588 return 0;
589 out_unlock:
590 rtnl_unlock();
591 return err;
592 }
593
594 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
595 {
596 rtnl_unlock();
597 }
598
599 /* IE validation */
600 static bool is_valid_ie_attr(const struct nlattr *attr)
601 {
602 const u8 *pos;
603 int len;
604
605 if (!attr)
606 return true;
607
608 pos = nla_data(attr);
609 len = nla_len(attr);
610
611 while (len) {
612 u8 elemlen;
613
614 if (len < 2)
615 return false;
616 len -= 2;
617
618 elemlen = pos[1];
619 if (elemlen > len)
620 return false;
621
622 len -= elemlen;
623 pos += 2 + elemlen;
624 }
625
626 return true;
627 }
628
629 /* message building helper */
630 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
631 int flags, u8 cmd)
632 {
633 /* since there is no private header just add the generic one */
634 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
635 }
636
637 static int nl80211_msg_put_channel(struct sk_buff *msg,
638 struct ieee80211_channel *chan,
639 bool large)
640 {
641 /* Some channels must be completely excluded from the
642 * list to protect old user-space tools from breaking
643 */
644 if (!large && chan->flags &
645 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
646 return 0;
647
648 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
649 chan->center_freq))
650 goto nla_put_failure;
651
652 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
653 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
654 goto nla_put_failure;
655 if (chan->flags & IEEE80211_CHAN_NO_IR) {
656 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
657 goto nla_put_failure;
658 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
659 goto nla_put_failure;
660 }
661 if (chan->flags & IEEE80211_CHAN_RADAR) {
662 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
663 goto nla_put_failure;
664 if (large) {
665 u32 time;
666
667 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
668
669 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
670 chan->dfs_state))
671 goto nla_put_failure;
672 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
673 time))
674 goto nla_put_failure;
675 if (nla_put_u32(msg,
676 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
677 chan->dfs_cac_ms))
678 goto nla_put_failure;
679 }
680 }
681
682 if (large) {
683 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
684 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
685 goto nla_put_failure;
686 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
687 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
688 goto nla_put_failure;
689 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
690 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
691 goto nla_put_failure;
692 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
693 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
694 goto nla_put_failure;
695 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
696 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
697 goto nla_put_failure;
698 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
699 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
700 goto nla_put_failure;
701 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
702 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
703 goto nla_put_failure;
704 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
706 goto nla_put_failure;
707 }
708
709 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
710 DBM_TO_MBM(chan->max_power)))
711 goto nla_put_failure;
712
713 return 0;
714
715 nla_put_failure:
716 return -ENOBUFS;
717 }
718
719 /* netlink command implementations */
720
721 struct key_parse {
722 struct key_params p;
723 int idx;
724 int type;
725 bool def, defmgmt;
726 bool def_uni, def_multi;
727 };
728
729 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
730 {
731 struct nlattr *tb[NL80211_KEY_MAX + 1];
732 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
733 nl80211_key_policy);
734 if (err)
735 return err;
736
737 k->def = !!tb[NL80211_KEY_DEFAULT];
738 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
739
740 if (k->def) {
741 k->def_uni = true;
742 k->def_multi = true;
743 }
744 if (k->defmgmt)
745 k->def_multi = true;
746
747 if (tb[NL80211_KEY_IDX])
748 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
749
750 if (tb[NL80211_KEY_DATA]) {
751 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
752 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
753 }
754
755 if (tb[NL80211_KEY_SEQ]) {
756 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
757 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
758 }
759
760 if (tb[NL80211_KEY_CIPHER])
761 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
762
763 if (tb[NL80211_KEY_TYPE]) {
764 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
765 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
766 return -EINVAL;
767 }
768
769 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
770 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
771
772 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
773 tb[NL80211_KEY_DEFAULT_TYPES],
774 nl80211_key_default_policy);
775 if (err)
776 return err;
777
778 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
779 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
780 }
781
782 return 0;
783 }
784
785 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
786 {
787 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
788 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
789 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
790 }
791
792 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
793 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
794 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
795 }
796
797 if (info->attrs[NL80211_ATTR_KEY_IDX])
798 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
799
800 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
801 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
802
803 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
804 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
805
806 if (k->def) {
807 k->def_uni = true;
808 k->def_multi = true;
809 }
810 if (k->defmgmt)
811 k->def_multi = true;
812
813 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
814 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
815 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
816 return -EINVAL;
817 }
818
819 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
820 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
821 int err = nla_parse_nested(
822 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
823 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
824 nl80211_key_default_policy);
825 if (err)
826 return err;
827
828 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
829 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
830 }
831
832 return 0;
833 }
834
835 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
836 {
837 int err;
838
839 memset(k, 0, sizeof(*k));
840 k->idx = -1;
841 k->type = -1;
842
843 if (info->attrs[NL80211_ATTR_KEY])
844 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
845 else
846 err = nl80211_parse_key_old(info, k);
847
848 if (err)
849 return err;
850
851 if (k->def && k->defmgmt)
852 return -EINVAL;
853
854 if (k->defmgmt) {
855 if (k->def_uni || !k->def_multi)
856 return -EINVAL;
857 }
858
859 if (k->idx != -1) {
860 if (k->defmgmt) {
861 if (k->idx < 4 || k->idx > 5)
862 return -EINVAL;
863 } else if (k->def) {
864 if (k->idx < 0 || k->idx > 3)
865 return -EINVAL;
866 } else {
867 if (k->idx < 0 || k->idx > 5)
868 return -EINVAL;
869 }
870 }
871
872 return 0;
873 }
874
875 static struct cfg80211_cached_keys *
876 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
877 struct nlattr *keys, bool *no_ht)
878 {
879 struct key_parse parse;
880 struct nlattr *key;
881 struct cfg80211_cached_keys *result;
882 int rem, err, def = 0;
883 bool have_key = false;
884
885 nla_for_each_nested(key, keys, rem) {
886 have_key = true;
887 break;
888 }
889
890 if (!have_key)
891 return NULL;
892
893 result = kzalloc(sizeof(*result), GFP_KERNEL);
894 if (!result)
895 return ERR_PTR(-ENOMEM);
896
897 result->def = -1;
898
899 nla_for_each_nested(key, keys, rem) {
900 memset(&parse, 0, sizeof(parse));
901 parse.idx = -1;
902
903 err = nl80211_parse_key_new(key, &parse);
904 if (err)
905 goto error;
906 err = -EINVAL;
907 if (!parse.p.key)
908 goto error;
909 if (parse.idx < 0 || parse.idx > 3)
910 goto error;
911 if (parse.def) {
912 if (def)
913 goto error;
914 def = 1;
915 result->def = parse.idx;
916 if (!parse.def_uni || !parse.def_multi)
917 goto error;
918 } else if (parse.defmgmt)
919 goto error;
920 err = cfg80211_validate_key_settings(rdev, &parse.p,
921 parse.idx, false, NULL);
922 if (err)
923 goto error;
924 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
925 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
926 err = -EINVAL;
927 goto error;
928 }
929 result->params[parse.idx].cipher = parse.p.cipher;
930 result->params[parse.idx].key_len = parse.p.key_len;
931 result->params[parse.idx].key = result->data[parse.idx];
932 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
933
934 /* must be WEP key if we got here */
935 if (no_ht)
936 *no_ht = true;
937 }
938
939 if (result->def < 0) {
940 err = -EINVAL;
941 goto error;
942 }
943
944 return result;
945 error:
946 kfree(result);
947 return ERR_PTR(err);
948 }
949
950 static int nl80211_key_allowed(struct wireless_dev *wdev)
951 {
952 ASSERT_WDEV_LOCK(wdev);
953
954 switch (wdev->iftype) {
955 case NL80211_IFTYPE_AP:
956 case NL80211_IFTYPE_AP_VLAN:
957 case NL80211_IFTYPE_P2P_GO:
958 case NL80211_IFTYPE_MESH_POINT:
959 break;
960 case NL80211_IFTYPE_ADHOC:
961 case NL80211_IFTYPE_STATION:
962 case NL80211_IFTYPE_P2P_CLIENT:
963 if (!wdev->current_bss)
964 return -ENOLINK;
965 break;
966 case NL80211_IFTYPE_UNSPECIFIED:
967 case NL80211_IFTYPE_OCB:
968 case NL80211_IFTYPE_MONITOR:
969 case NL80211_IFTYPE_NAN:
970 case NL80211_IFTYPE_P2P_DEVICE:
971 case NL80211_IFTYPE_WDS:
972 case NUM_NL80211_IFTYPES:
973 return -EINVAL;
974 }
975
976 return 0;
977 }
978
979 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
980 struct nlattr *tb)
981 {
982 struct ieee80211_channel *chan;
983
984 if (tb == NULL)
985 return NULL;
986 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
987 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
988 return NULL;
989 return chan;
990 }
991
992 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
993 {
994 struct nlattr *nl_modes = nla_nest_start(msg, attr);
995 int i;
996
997 if (!nl_modes)
998 goto nla_put_failure;
999
1000 i = 0;
1001 while (ifmodes) {
1002 if ((ifmodes & 1) && nla_put_flag(msg, i))
1003 goto nla_put_failure;
1004 ifmodes >>= 1;
1005 i++;
1006 }
1007
1008 nla_nest_end(msg, nl_modes);
1009 return 0;
1010
1011 nla_put_failure:
1012 return -ENOBUFS;
1013 }
1014
1015 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1016 struct sk_buff *msg,
1017 bool large)
1018 {
1019 struct nlattr *nl_combis;
1020 int i, j;
1021
1022 nl_combis = nla_nest_start(msg,
1023 NL80211_ATTR_INTERFACE_COMBINATIONS);
1024 if (!nl_combis)
1025 goto nla_put_failure;
1026
1027 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1028 const struct ieee80211_iface_combination *c;
1029 struct nlattr *nl_combi, *nl_limits;
1030
1031 c = &wiphy->iface_combinations[i];
1032
1033 nl_combi = nla_nest_start(msg, i + 1);
1034 if (!nl_combi)
1035 goto nla_put_failure;
1036
1037 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1038 if (!nl_limits)
1039 goto nla_put_failure;
1040
1041 for (j = 0; j < c->n_limits; j++) {
1042 struct nlattr *nl_limit;
1043
1044 nl_limit = nla_nest_start(msg, j + 1);
1045 if (!nl_limit)
1046 goto nla_put_failure;
1047 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1048 c->limits[j].max))
1049 goto nla_put_failure;
1050 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1051 c->limits[j].types))
1052 goto nla_put_failure;
1053 nla_nest_end(msg, nl_limit);
1054 }
1055
1056 nla_nest_end(msg, nl_limits);
1057
1058 if (c->beacon_int_infra_match &&
1059 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1060 goto nla_put_failure;
1061 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1062 c->num_different_channels) ||
1063 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1064 c->max_interfaces))
1065 goto nla_put_failure;
1066 if (large &&
1067 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1068 c->radar_detect_widths) ||
1069 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1070 c->radar_detect_regions)))
1071 goto nla_put_failure;
1072 if (c->beacon_int_min_gcd &&
1073 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1074 c->beacon_int_min_gcd))
1075 goto nla_put_failure;
1076
1077 nla_nest_end(msg, nl_combi);
1078 }
1079
1080 nla_nest_end(msg, nl_combis);
1081
1082 return 0;
1083 nla_put_failure:
1084 return -ENOBUFS;
1085 }
1086
1087 #ifdef CONFIG_PM
1088 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1089 struct sk_buff *msg)
1090 {
1091 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1092 struct nlattr *nl_tcp;
1093
1094 if (!tcp)
1095 return 0;
1096
1097 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1098 if (!nl_tcp)
1099 return -ENOBUFS;
1100
1101 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1102 tcp->data_payload_max))
1103 return -ENOBUFS;
1104
1105 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1106 tcp->data_payload_max))
1107 return -ENOBUFS;
1108
1109 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1110 return -ENOBUFS;
1111
1112 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1113 sizeof(*tcp->tok), tcp->tok))
1114 return -ENOBUFS;
1115
1116 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1117 tcp->data_interval_max))
1118 return -ENOBUFS;
1119
1120 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1121 tcp->wake_payload_max))
1122 return -ENOBUFS;
1123
1124 nla_nest_end(msg, nl_tcp);
1125 return 0;
1126 }
1127
1128 static int nl80211_send_wowlan(struct sk_buff *msg,
1129 struct cfg80211_registered_device *rdev,
1130 bool large)
1131 {
1132 struct nlattr *nl_wowlan;
1133
1134 if (!rdev->wiphy.wowlan)
1135 return 0;
1136
1137 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1138 if (!nl_wowlan)
1139 return -ENOBUFS;
1140
1141 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1142 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1143 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1144 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1145 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1146 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1147 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1148 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1149 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1150 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1151 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1152 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1153 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1154 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1155 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1156 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1157 return -ENOBUFS;
1158
1159 if (rdev->wiphy.wowlan->n_patterns) {
1160 struct nl80211_pattern_support pat = {
1161 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1162 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1163 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1164 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1165 };
1166
1167 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1168 sizeof(pat), &pat))
1169 return -ENOBUFS;
1170 }
1171
1172 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1173 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1174 rdev->wiphy.wowlan->max_nd_match_sets))
1175 return -ENOBUFS;
1176
1177 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1178 return -ENOBUFS;
1179
1180 nla_nest_end(msg, nl_wowlan);
1181
1182 return 0;
1183 }
1184 #endif
1185
1186 static int nl80211_send_coalesce(struct sk_buff *msg,
1187 struct cfg80211_registered_device *rdev)
1188 {
1189 struct nl80211_coalesce_rule_support rule;
1190
1191 if (!rdev->wiphy.coalesce)
1192 return 0;
1193
1194 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1195 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1196 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1197 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1198 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1199 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1200
1201 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1202 return -ENOBUFS;
1203
1204 return 0;
1205 }
1206
1207 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1208 struct ieee80211_supported_band *sband)
1209 {
1210 struct nlattr *nl_rates, *nl_rate;
1211 struct ieee80211_rate *rate;
1212 int i;
1213
1214 /* add HT info */
1215 if (sband->ht_cap.ht_supported &&
1216 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1217 sizeof(sband->ht_cap.mcs),
1218 &sband->ht_cap.mcs) ||
1219 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1220 sband->ht_cap.cap) ||
1221 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1222 sband->ht_cap.ampdu_factor) ||
1223 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1224 sband->ht_cap.ampdu_density)))
1225 return -ENOBUFS;
1226
1227 /* add VHT info */
1228 if (sband->vht_cap.vht_supported &&
1229 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1230 sizeof(sband->vht_cap.vht_mcs),
1231 &sband->vht_cap.vht_mcs) ||
1232 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1233 sband->vht_cap.cap)))
1234 return -ENOBUFS;
1235
1236 /* add bitrates */
1237 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1238 if (!nl_rates)
1239 return -ENOBUFS;
1240
1241 for (i = 0; i < sband->n_bitrates; i++) {
1242 nl_rate = nla_nest_start(msg, i);
1243 if (!nl_rate)
1244 return -ENOBUFS;
1245
1246 rate = &sband->bitrates[i];
1247 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1248 rate->bitrate))
1249 return -ENOBUFS;
1250 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1251 nla_put_flag(msg,
1252 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1253 return -ENOBUFS;
1254
1255 nla_nest_end(msg, nl_rate);
1256 }
1257
1258 nla_nest_end(msg, nl_rates);
1259
1260 return 0;
1261 }
1262
1263 static int
1264 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1265 const struct ieee80211_txrx_stypes *mgmt_stypes)
1266 {
1267 u16 stypes;
1268 struct nlattr *nl_ftypes, *nl_ifs;
1269 enum nl80211_iftype ift;
1270 int i;
1271
1272 if (!mgmt_stypes)
1273 return 0;
1274
1275 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1276 if (!nl_ifs)
1277 return -ENOBUFS;
1278
1279 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1280 nl_ftypes = nla_nest_start(msg, ift);
1281 if (!nl_ftypes)
1282 return -ENOBUFS;
1283 i = 0;
1284 stypes = mgmt_stypes[ift].tx;
1285 while (stypes) {
1286 if ((stypes & 1) &&
1287 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1288 (i << 4) | IEEE80211_FTYPE_MGMT))
1289 return -ENOBUFS;
1290 stypes >>= 1;
1291 i++;
1292 }
1293 nla_nest_end(msg, nl_ftypes);
1294 }
1295
1296 nla_nest_end(msg, nl_ifs);
1297
1298 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1299 if (!nl_ifs)
1300 return -ENOBUFS;
1301
1302 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1303 nl_ftypes = nla_nest_start(msg, ift);
1304 if (!nl_ftypes)
1305 return -ENOBUFS;
1306 i = 0;
1307 stypes = mgmt_stypes[ift].rx;
1308 while (stypes) {
1309 if ((stypes & 1) &&
1310 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1311 (i << 4) | IEEE80211_FTYPE_MGMT))
1312 return -ENOBUFS;
1313 stypes >>= 1;
1314 i++;
1315 }
1316 nla_nest_end(msg, nl_ftypes);
1317 }
1318 nla_nest_end(msg, nl_ifs);
1319
1320 return 0;
1321 }
1322
1323 #define CMD(op, n) \
1324 do { \
1325 if (rdev->ops->op) { \
1326 i++; \
1327 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1328 goto nla_put_failure; \
1329 } \
1330 } while (0)
1331
1332 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1333 struct sk_buff *msg)
1334 {
1335 int i = 0;
1336
1337 /*
1338 * do *NOT* add anything into this function, new things need to be
1339 * advertised only to new versions of userspace that can deal with
1340 * the split (and they can't possibly care about new features...
1341 */
1342 CMD(add_virtual_intf, NEW_INTERFACE);
1343 CMD(change_virtual_intf, SET_INTERFACE);
1344 CMD(add_key, NEW_KEY);
1345 CMD(start_ap, START_AP);
1346 CMD(add_station, NEW_STATION);
1347 CMD(add_mpath, NEW_MPATH);
1348 CMD(update_mesh_config, SET_MESH_CONFIG);
1349 CMD(change_bss, SET_BSS);
1350 CMD(auth, AUTHENTICATE);
1351 CMD(assoc, ASSOCIATE);
1352 CMD(deauth, DEAUTHENTICATE);
1353 CMD(disassoc, DISASSOCIATE);
1354 CMD(join_ibss, JOIN_IBSS);
1355 CMD(join_mesh, JOIN_MESH);
1356 CMD(set_pmksa, SET_PMKSA);
1357 CMD(del_pmksa, DEL_PMKSA);
1358 CMD(flush_pmksa, FLUSH_PMKSA);
1359 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1360 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1361 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1362 CMD(mgmt_tx, FRAME);
1363 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1364 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1365 i++;
1366 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1367 goto nla_put_failure;
1368 }
1369 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1370 rdev->ops->join_mesh) {
1371 i++;
1372 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1373 goto nla_put_failure;
1374 }
1375 CMD(set_wds_peer, SET_WDS_PEER);
1376 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1377 CMD(tdls_mgmt, TDLS_MGMT);
1378 CMD(tdls_oper, TDLS_OPER);
1379 }
1380 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1381 CMD(sched_scan_start, START_SCHED_SCAN);
1382 CMD(probe_client, PROBE_CLIENT);
1383 CMD(set_noack_map, SET_NOACK_MAP);
1384 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1385 i++;
1386 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1387 goto nla_put_failure;
1388 }
1389 CMD(start_p2p_device, START_P2P_DEVICE);
1390 CMD(set_mcast_rate, SET_MCAST_RATE);
1391 #ifdef CONFIG_NL80211_TESTMODE
1392 CMD(testmode_cmd, TESTMODE);
1393 #endif
1394
1395 if (rdev->ops->connect || rdev->ops->auth) {
1396 i++;
1397 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1398 goto nla_put_failure;
1399 }
1400
1401 if (rdev->ops->disconnect || rdev->ops->deauth) {
1402 i++;
1403 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1404 goto nla_put_failure;
1405 }
1406
1407 return i;
1408 nla_put_failure:
1409 return -ENOBUFS;
1410 }
1411
1412 struct nl80211_dump_wiphy_state {
1413 s64 filter_wiphy;
1414 long start;
1415 long split_start, band_start, chan_start, capa_start;
1416 bool split;
1417 };
1418
1419 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1420 enum nl80211_commands cmd,
1421 struct sk_buff *msg, u32 portid, u32 seq,
1422 int flags, struct nl80211_dump_wiphy_state *state)
1423 {
1424 void *hdr;
1425 struct nlattr *nl_bands, *nl_band;
1426 struct nlattr *nl_freqs, *nl_freq;
1427 struct nlattr *nl_cmds;
1428 enum nl80211_band band;
1429 struct ieee80211_channel *chan;
1430 int i;
1431 const struct ieee80211_txrx_stypes *mgmt_stypes =
1432 rdev->wiphy.mgmt_stypes;
1433 u32 features;
1434
1435 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1436 if (!hdr)
1437 return -ENOBUFS;
1438
1439 if (WARN_ON(!state))
1440 return -EINVAL;
1441
1442 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1443 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1444 wiphy_name(&rdev->wiphy)) ||
1445 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1446 cfg80211_rdev_list_generation))
1447 goto nla_put_failure;
1448
1449 if (cmd != NL80211_CMD_NEW_WIPHY)
1450 goto finish;
1451
1452 switch (state->split_start) {
1453 case 0:
1454 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1455 rdev->wiphy.retry_short) ||
1456 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1457 rdev->wiphy.retry_long) ||
1458 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1459 rdev->wiphy.frag_threshold) ||
1460 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1461 rdev->wiphy.rts_threshold) ||
1462 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1463 rdev->wiphy.coverage_class) ||
1464 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1465 rdev->wiphy.max_scan_ssids) ||
1466 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1467 rdev->wiphy.max_sched_scan_ssids) ||
1468 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1469 rdev->wiphy.max_scan_ie_len) ||
1470 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1471 rdev->wiphy.max_sched_scan_ie_len) ||
1472 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1473 rdev->wiphy.max_match_sets) ||
1474 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1475 rdev->wiphy.max_sched_scan_plans) ||
1476 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1477 rdev->wiphy.max_sched_scan_plan_interval) ||
1478 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1479 rdev->wiphy.max_sched_scan_plan_iterations))
1480 goto nla_put_failure;
1481
1482 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1483 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1484 goto nla_put_failure;
1485 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1486 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1487 goto nla_put_failure;
1488 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1489 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1490 goto nla_put_failure;
1491 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1492 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1493 goto nla_put_failure;
1494 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1495 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1496 goto nla_put_failure;
1497 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1498 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1499 goto nla_put_failure;
1500 state->split_start++;
1501 if (state->split)
1502 break;
1503 case 1:
1504 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1505 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1506 rdev->wiphy.cipher_suites))
1507 goto nla_put_failure;
1508
1509 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1510 rdev->wiphy.max_num_pmkids))
1511 goto nla_put_failure;
1512
1513 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1514 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1515 goto nla_put_failure;
1516
1517 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1518 rdev->wiphy.available_antennas_tx) ||
1519 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1520 rdev->wiphy.available_antennas_rx))
1521 goto nla_put_failure;
1522
1523 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1524 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1525 rdev->wiphy.probe_resp_offload))
1526 goto nla_put_failure;
1527
1528 if ((rdev->wiphy.available_antennas_tx ||
1529 rdev->wiphy.available_antennas_rx) &&
1530 rdev->ops->get_antenna) {
1531 u32 tx_ant = 0, rx_ant = 0;
1532 int res;
1533
1534 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1535 if (!res) {
1536 if (nla_put_u32(msg,
1537 NL80211_ATTR_WIPHY_ANTENNA_TX,
1538 tx_ant) ||
1539 nla_put_u32(msg,
1540 NL80211_ATTR_WIPHY_ANTENNA_RX,
1541 rx_ant))
1542 goto nla_put_failure;
1543 }
1544 }
1545
1546 state->split_start++;
1547 if (state->split)
1548 break;
1549 case 2:
1550 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1551 rdev->wiphy.interface_modes))
1552 goto nla_put_failure;
1553 state->split_start++;
1554 if (state->split)
1555 break;
1556 case 3:
1557 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1558 if (!nl_bands)
1559 goto nla_put_failure;
1560
1561 for (band = state->band_start;
1562 band < NUM_NL80211_BANDS; band++) {
1563 struct ieee80211_supported_band *sband;
1564
1565 sband = rdev->wiphy.bands[band];
1566
1567 if (!sband)
1568 continue;
1569
1570 nl_band = nla_nest_start(msg, band);
1571 if (!nl_band)
1572 goto nla_put_failure;
1573
1574 switch (state->chan_start) {
1575 case 0:
1576 if (nl80211_send_band_rateinfo(msg, sband))
1577 goto nla_put_failure;
1578 state->chan_start++;
1579 if (state->split)
1580 break;
1581 default:
1582 /* add frequencies */
1583 nl_freqs = nla_nest_start(
1584 msg, NL80211_BAND_ATTR_FREQS);
1585 if (!nl_freqs)
1586 goto nla_put_failure;
1587
1588 for (i = state->chan_start - 1;
1589 i < sband->n_channels;
1590 i++) {
1591 nl_freq = nla_nest_start(msg, i);
1592 if (!nl_freq)
1593 goto nla_put_failure;
1594
1595 chan = &sband->channels[i];
1596
1597 if (nl80211_msg_put_channel(
1598 msg, chan,
1599 state->split))
1600 goto nla_put_failure;
1601
1602 nla_nest_end(msg, nl_freq);
1603 if (state->split)
1604 break;
1605 }
1606 if (i < sband->n_channels)
1607 state->chan_start = i + 2;
1608 else
1609 state->chan_start = 0;
1610 nla_nest_end(msg, nl_freqs);
1611 }
1612
1613 nla_nest_end(msg, nl_band);
1614
1615 if (state->split) {
1616 /* start again here */
1617 if (state->chan_start)
1618 band--;
1619 break;
1620 }
1621 }
1622 nla_nest_end(msg, nl_bands);
1623
1624 if (band < NUM_NL80211_BANDS)
1625 state->band_start = band + 1;
1626 else
1627 state->band_start = 0;
1628
1629 /* if bands & channels are done, continue outside */
1630 if (state->band_start == 0 && state->chan_start == 0)
1631 state->split_start++;
1632 if (state->split)
1633 break;
1634 case 4:
1635 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1636 if (!nl_cmds)
1637 goto nla_put_failure;
1638
1639 i = nl80211_add_commands_unsplit(rdev, msg);
1640 if (i < 0)
1641 goto nla_put_failure;
1642 if (state->split) {
1643 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1644 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1645 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1646 CMD(channel_switch, CHANNEL_SWITCH);
1647 CMD(set_qos_map, SET_QOS_MAP);
1648 if (rdev->wiphy.features &
1649 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1650 CMD(add_tx_ts, ADD_TX_TS);
1651 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1652 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1653 }
1654 #undef CMD
1655
1656 nla_nest_end(msg, nl_cmds);
1657 state->split_start++;
1658 if (state->split)
1659 break;
1660 case 5:
1661 if (rdev->ops->remain_on_channel &&
1662 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1663 nla_put_u32(msg,
1664 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1665 rdev->wiphy.max_remain_on_channel_duration))
1666 goto nla_put_failure;
1667
1668 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1669 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1670 goto nla_put_failure;
1671
1672 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1673 goto nla_put_failure;
1674 state->split_start++;
1675 if (state->split)
1676 break;
1677 case 6:
1678 #ifdef CONFIG_PM
1679 if (nl80211_send_wowlan(msg, rdev, state->split))
1680 goto nla_put_failure;
1681 state->split_start++;
1682 if (state->split)
1683 break;
1684 #else
1685 state->split_start++;
1686 #endif
1687 case 7:
1688 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1689 rdev->wiphy.software_iftypes))
1690 goto nla_put_failure;
1691
1692 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1693 state->split))
1694 goto nla_put_failure;
1695
1696 state->split_start++;
1697 if (state->split)
1698 break;
1699 case 8:
1700 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1701 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1702 rdev->wiphy.ap_sme_capa))
1703 goto nla_put_failure;
1704
1705 features = rdev->wiphy.features;
1706 /*
1707 * We can only add the per-channel limit information if the
1708 * dump is split, otherwise it makes it too big. Therefore
1709 * only advertise it in that case.
1710 */
1711 if (state->split)
1712 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1713 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1714 goto nla_put_failure;
1715
1716 if (rdev->wiphy.ht_capa_mod_mask &&
1717 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1718 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1719 rdev->wiphy.ht_capa_mod_mask))
1720 goto nla_put_failure;
1721
1722 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1723 rdev->wiphy.max_acl_mac_addrs &&
1724 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1725 rdev->wiphy.max_acl_mac_addrs))
1726 goto nla_put_failure;
1727
1728 /*
1729 * Any information below this point is only available to
1730 * applications that can deal with it being split. This
1731 * helps ensure that newly added capabilities don't break
1732 * older tools by overrunning their buffers.
1733 *
1734 * We still increment split_start so that in the split
1735 * case we'll continue with more data in the next round,
1736 * but break unconditionally so unsplit data stops here.
1737 */
1738 state->split_start++;
1739 break;
1740 case 9:
1741 if (rdev->wiphy.extended_capabilities &&
1742 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1743 rdev->wiphy.extended_capabilities_len,
1744 rdev->wiphy.extended_capabilities) ||
1745 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1746 rdev->wiphy.extended_capabilities_len,
1747 rdev->wiphy.extended_capabilities_mask)))
1748 goto nla_put_failure;
1749
1750 if (rdev->wiphy.vht_capa_mod_mask &&
1751 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1752 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1753 rdev->wiphy.vht_capa_mod_mask))
1754 goto nla_put_failure;
1755
1756 state->split_start++;
1757 break;
1758 case 10:
1759 if (nl80211_send_coalesce(msg, rdev))
1760 goto nla_put_failure;
1761
1762 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1763 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1764 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1765 goto nla_put_failure;
1766
1767 if (rdev->wiphy.max_ap_assoc_sta &&
1768 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1769 rdev->wiphy.max_ap_assoc_sta))
1770 goto nla_put_failure;
1771
1772 state->split_start++;
1773 break;
1774 case 11:
1775 if (rdev->wiphy.n_vendor_commands) {
1776 const struct nl80211_vendor_cmd_info *info;
1777 struct nlattr *nested;
1778
1779 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1780 if (!nested)
1781 goto nla_put_failure;
1782
1783 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1784 info = &rdev->wiphy.vendor_commands[i].info;
1785 if (nla_put(msg, i + 1, sizeof(*info), info))
1786 goto nla_put_failure;
1787 }
1788 nla_nest_end(msg, nested);
1789 }
1790
1791 if (rdev->wiphy.n_vendor_events) {
1792 const struct nl80211_vendor_cmd_info *info;
1793 struct nlattr *nested;
1794
1795 nested = nla_nest_start(msg,
1796 NL80211_ATTR_VENDOR_EVENTS);
1797 if (!nested)
1798 goto nla_put_failure;
1799
1800 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1801 info = &rdev->wiphy.vendor_events[i];
1802 if (nla_put(msg, i + 1, sizeof(*info), info))
1803 goto nla_put_failure;
1804 }
1805 nla_nest_end(msg, nested);
1806 }
1807 state->split_start++;
1808 break;
1809 case 12:
1810 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1811 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1812 rdev->wiphy.max_num_csa_counters))
1813 goto nla_put_failure;
1814
1815 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1816 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1817 goto nla_put_failure;
1818
1819 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1820 sizeof(rdev->wiphy.ext_features),
1821 rdev->wiphy.ext_features))
1822 goto nla_put_failure;
1823
1824 if (rdev->wiphy.bss_select_support) {
1825 struct nlattr *nested;
1826 u32 bss_select_support = rdev->wiphy.bss_select_support;
1827
1828 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1829 if (!nested)
1830 goto nla_put_failure;
1831
1832 i = 0;
1833 while (bss_select_support) {
1834 if ((bss_select_support & 1) &&
1835 nla_put_flag(msg, i))
1836 goto nla_put_failure;
1837 i++;
1838 bss_select_support >>= 1;
1839 }
1840 nla_nest_end(msg, nested);
1841 }
1842
1843 state->split_start++;
1844 break;
1845 case 13:
1846 if (rdev->wiphy.num_iftype_ext_capab &&
1847 rdev->wiphy.iftype_ext_capab) {
1848 struct nlattr *nested_ext_capab, *nested;
1849
1850 nested = nla_nest_start(msg,
1851 NL80211_ATTR_IFTYPE_EXT_CAPA);
1852 if (!nested)
1853 goto nla_put_failure;
1854
1855 for (i = state->capa_start;
1856 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1857 const struct wiphy_iftype_ext_capab *capab;
1858
1859 capab = &rdev->wiphy.iftype_ext_capab[i];
1860
1861 nested_ext_capab = nla_nest_start(msg, i);
1862 if (!nested_ext_capab ||
1863 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1864 capab->iftype) ||
1865 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1866 capab->extended_capabilities_len,
1867 capab->extended_capabilities) ||
1868 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1869 capab->extended_capabilities_len,
1870 capab->extended_capabilities_mask))
1871 goto nla_put_failure;
1872
1873 nla_nest_end(msg, nested_ext_capab);
1874 if (state->split)
1875 break;
1876 }
1877 nla_nest_end(msg, nested);
1878 if (i < rdev->wiphy.num_iftype_ext_capab) {
1879 state->capa_start = i + 1;
1880 break;
1881 }
1882 }
1883
1884 /* done */
1885 state->split_start = 0;
1886 break;
1887 }
1888 finish:
1889 genlmsg_end(msg, hdr);
1890 return 0;
1891
1892 nla_put_failure:
1893 genlmsg_cancel(msg, hdr);
1894 return -EMSGSIZE;
1895 }
1896
1897 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1898 struct netlink_callback *cb,
1899 struct nl80211_dump_wiphy_state *state)
1900 {
1901 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1902 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1903 tb, nl80211_fam.maxattr, nl80211_policy);
1904 /* ignore parse errors for backward compatibility */
1905 if (ret)
1906 return 0;
1907
1908 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1909 if (tb[NL80211_ATTR_WIPHY])
1910 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1911 if (tb[NL80211_ATTR_WDEV])
1912 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1913 if (tb[NL80211_ATTR_IFINDEX]) {
1914 struct net_device *netdev;
1915 struct cfg80211_registered_device *rdev;
1916 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1917
1918 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1919 if (!netdev)
1920 return -ENODEV;
1921 if (netdev->ieee80211_ptr) {
1922 rdev = wiphy_to_rdev(
1923 netdev->ieee80211_ptr->wiphy);
1924 state->filter_wiphy = rdev->wiphy_idx;
1925 }
1926 }
1927
1928 return 0;
1929 }
1930
1931 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1932 {
1933 int idx = 0, ret;
1934 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1935 struct cfg80211_registered_device *rdev;
1936
1937 rtnl_lock();
1938 if (!state) {
1939 state = kzalloc(sizeof(*state), GFP_KERNEL);
1940 if (!state) {
1941 rtnl_unlock();
1942 return -ENOMEM;
1943 }
1944 state->filter_wiphy = -1;
1945 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1946 if (ret) {
1947 kfree(state);
1948 rtnl_unlock();
1949 return ret;
1950 }
1951 cb->args[0] = (long)state;
1952 }
1953
1954 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1955 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1956 continue;
1957 if (++idx <= state->start)
1958 continue;
1959 if (state->filter_wiphy != -1 &&
1960 state->filter_wiphy != rdev->wiphy_idx)
1961 continue;
1962 /* attempt to fit multiple wiphy data chunks into the skb */
1963 do {
1964 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1965 skb,
1966 NETLINK_CB(cb->skb).portid,
1967 cb->nlh->nlmsg_seq,
1968 NLM_F_MULTI, state);
1969 if (ret < 0) {
1970 /*
1971 * If sending the wiphy data didn't fit (ENOBUFS
1972 * or EMSGSIZE returned), this SKB is still
1973 * empty (so it's not too big because another
1974 * wiphy dataset is already in the skb) and
1975 * we've not tried to adjust the dump allocation
1976 * yet ... then adjust the alloc size to be
1977 * bigger, and return 1 but with the empty skb.
1978 * This results in an empty message being RX'ed
1979 * in userspace, but that is ignored.
1980 *
1981 * We can then retry with the larger buffer.
1982 */
1983 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1984 !skb->len && !state->split &&
1985 cb->min_dump_alloc < 4096) {
1986 cb->min_dump_alloc = 4096;
1987 state->split_start = 0;
1988 rtnl_unlock();
1989 return 1;
1990 }
1991 idx--;
1992 break;
1993 }
1994 } while (state->split_start > 0);
1995 break;
1996 }
1997 rtnl_unlock();
1998
1999 state->start = idx;
2000
2001 return skb->len;
2002 }
2003
2004 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2005 {
2006 kfree((void *)cb->args[0]);
2007 return 0;
2008 }
2009
2010 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2011 {
2012 struct sk_buff *msg;
2013 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2014 struct nl80211_dump_wiphy_state state = {};
2015
2016 msg = nlmsg_new(4096, GFP_KERNEL);
2017 if (!msg)
2018 return -ENOMEM;
2019
2020 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2021 info->snd_portid, info->snd_seq, 0,
2022 &state) < 0) {
2023 nlmsg_free(msg);
2024 return -ENOBUFS;
2025 }
2026
2027 return genlmsg_reply(msg, info);
2028 }
2029
2030 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2031 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2032 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2033 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2034 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2035 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2036 };
2037
2038 static int parse_txq_params(struct nlattr *tb[],
2039 struct ieee80211_txq_params *txq_params)
2040 {
2041 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2042 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2043 !tb[NL80211_TXQ_ATTR_AIFS])
2044 return -EINVAL;
2045
2046 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2047 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2048 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2049 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2050 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2051
2052 if (txq_params->ac >= NL80211_NUM_ACS)
2053 return -EINVAL;
2054
2055 return 0;
2056 }
2057
2058 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2059 {
2060 /*
2061 * You can only set the channel explicitly for WDS interfaces,
2062 * all others have their channel managed via their respective
2063 * "establish a connection" command (connect, join, ...)
2064 *
2065 * For AP/GO and mesh mode, the channel can be set with the
2066 * channel userspace API, but is only stored and passed to the
2067 * low-level driver when the AP starts or the mesh is joined.
2068 * This is for backward compatibility, userspace can also give
2069 * the channel in the start-ap or join-mesh commands instead.
2070 *
2071 * Monitors are special as they are normally slaved to
2072 * whatever else is going on, so they have their own special
2073 * operation to set the monitor channel if possible.
2074 */
2075 return !wdev ||
2076 wdev->iftype == NL80211_IFTYPE_AP ||
2077 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2078 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2079 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2080 }
2081
2082 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2083 struct genl_info *info,
2084 struct cfg80211_chan_def *chandef)
2085 {
2086 u32 control_freq;
2087
2088 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2089 return -EINVAL;
2090
2091 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2092
2093 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2094 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2095 chandef->center_freq1 = control_freq;
2096 chandef->center_freq2 = 0;
2097
2098 /* Primary channel not allowed */
2099 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2100 return -EINVAL;
2101
2102 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2103 enum nl80211_channel_type chantype;
2104
2105 chantype = nla_get_u32(
2106 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2107
2108 switch (chantype) {
2109 case NL80211_CHAN_NO_HT:
2110 case NL80211_CHAN_HT20:
2111 case NL80211_CHAN_HT40PLUS:
2112 case NL80211_CHAN_HT40MINUS:
2113 cfg80211_chandef_create(chandef, chandef->chan,
2114 chantype);
2115 break;
2116 default:
2117 return -EINVAL;
2118 }
2119 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2120 chandef->width =
2121 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2122 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2123 chandef->center_freq1 =
2124 nla_get_u32(
2125 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2126 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2127 chandef->center_freq2 =
2128 nla_get_u32(
2129 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2130 }
2131
2132 if (!cfg80211_chandef_valid(chandef))
2133 return -EINVAL;
2134
2135 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2136 IEEE80211_CHAN_DISABLED))
2137 return -EINVAL;
2138
2139 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2140 chandef->width == NL80211_CHAN_WIDTH_10) &&
2141 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2142 return -EINVAL;
2143
2144 return 0;
2145 }
2146
2147 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2148 struct net_device *dev,
2149 struct genl_info *info)
2150 {
2151 struct cfg80211_chan_def chandef;
2152 int result;
2153 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2154 struct wireless_dev *wdev = NULL;
2155
2156 if (dev)
2157 wdev = dev->ieee80211_ptr;
2158 if (!nl80211_can_set_dev_channel(wdev))
2159 return -EOPNOTSUPP;
2160 if (wdev)
2161 iftype = wdev->iftype;
2162
2163 result = nl80211_parse_chandef(rdev, info, &chandef);
2164 if (result)
2165 return result;
2166
2167 switch (iftype) {
2168 case NL80211_IFTYPE_AP:
2169 case NL80211_IFTYPE_P2P_GO:
2170 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2171 iftype)) {
2172 result = -EINVAL;
2173 break;
2174 }
2175 if (wdev->beacon_interval) {
2176 if (!dev || !rdev->ops->set_ap_chanwidth ||
2177 !(rdev->wiphy.features &
2178 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2179 result = -EBUSY;
2180 break;
2181 }
2182
2183 /* Only allow dynamic channel width changes */
2184 if (chandef.chan != wdev->preset_chandef.chan) {
2185 result = -EBUSY;
2186 break;
2187 }
2188 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2189 if (result)
2190 break;
2191 }
2192 wdev->preset_chandef = chandef;
2193 result = 0;
2194 break;
2195 case NL80211_IFTYPE_MESH_POINT:
2196 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2197 break;
2198 case NL80211_IFTYPE_MONITOR:
2199 result = cfg80211_set_monitor_channel(rdev, &chandef);
2200 break;
2201 default:
2202 result = -EINVAL;
2203 }
2204
2205 return result;
2206 }
2207
2208 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2209 {
2210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2211 struct net_device *netdev = info->user_ptr[1];
2212
2213 return __nl80211_set_channel(rdev, netdev, info);
2214 }
2215
2216 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2217 {
2218 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2219 struct net_device *dev = info->user_ptr[1];
2220 struct wireless_dev *wdev = dev->ieee80211_ptr;
2221 const u8 *bssid;
2222
2223 if (!info->attrs[NL80211_ATTR_MAC])
2224 return -EINVAL;
2225
2226 if (netif_running(dev))
2227 return -EBUSY;
2228
2229 if (!rdev->ops->set_wds_peer)
2230 return -EOPNOTSUPP;
2231
2232 if (wdev->iftype != NL80211_IFTYPE_WDS)
2233 return -EOPNOTSUPP;
2234
2235 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2236 return rdev_set_wds_peer(rdev, dev, bssid);
2237 }
2238
2239 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2240 {
2241 struct cfg80211_registered_device *rdev;
2242 struct net_device *netdev = NULL;
2243 struct wireless_dev *wdev;
2244 int result = 0, rem_txq_params = 0;
2245 struct nlattr *nl_txq_params;
2246 u32 changed;
2247 u8 retry_short = 0, retry_long = 0;
2248 u32 frag_threshold = 0, rts_threshold = 0;
2249 u8 coverage_class = 0;
2250
2251 ASSERT_RTNL();
2252
2253 /*
2254 * Try to find the wiphy and netdev. Normally this
2255 * function shouldn't need the netdev, but this is
2256 * done for backward compatibility -- previously
2257 * setting the channel was done per wiphy, but now
2258 * it is per netdev. Previous userland like hostapd
2259 * also passed a netdev to set_wiphy, so that it is
2260 * possible to let that go to the right netdev!
2261 */
2262
2263 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2264 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2265
2266 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2267 if (netdev && netdev->ieee80211_ptr)
2268 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2269 else
2270 netdev = NULL;
2271 }
2272
2273 if (!netdev) {
2274 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2275 info->attrs);
2276 if (IS_ERR(rdev))
2277 return PTR_ERR(rdev);
2278 wdev = NULL;
2279 netdev = NULL;
2280 result = 0;
2281 } else
2282 wdev = netdev->ieee80211_ptr;
2283
2284 /*
2285 * end workaround code, by now the rdev is available
2286 * and locked, and wdev may or may not be NULL.
2287 */
2288
2289 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2290 result = cfg80211_dev_rename(
2291 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2292
2293 if (result)
2294 return result;
2295
2296 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2297 struct ieee80211_txq_params txq_params;
2298 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2299
2300 if (!rdev->ops->set_txq_params)
2301 return -EOPNOTSUPP;
2302
2303 if (!netdev)
2304 return -EINVAL;
2305
2306 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2307 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2308 return -EINVAL;
2309
2310 if (!netif_running(netdev))
2311 return -ENETDOWN;
2312
2313 nla_for_each_nested(nl_txq_params,
2314 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2315 rem_txq_params) {
2316 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2317 nl_txq_params,
2318 txq_params_policy);
2319 if (result)
2320 return result;
2321 result = parse_txq_params(tb, &txq_params);
2322 if (result)
2323 return result;
2324
2325 result = rdev_set_txq_params(rdev, netdev,
2326 &txq_params);
2327 if (result)
2328 return result;
2329 }
2330 }
2331
2332 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2333 result = __nl80211_set_channel(
2334 rdev,
2335 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2336 info);
2337 if (result)
2338 return result;
2339 }
2340
2341 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2342 struct wireless_dev *txp_wdev = wdev;
2343 enum nl80211_tx_power_setting type;
2344 int idx, mbm = 0;
2345
2346 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2347 txp_wdev = NULL;
2348
2349 if (!rdev->ops->set_tx_power)
2350 return -EOPNOTSUPP;
2351
2352 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2353 type = nla_get_u32(info->attrs[idx]);
2354
2355 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2356 (type != NL80211_TX_POWER_AUTOMATIC))
2357 return -EINVAL;
2358
2359 if (type != NL80211_TX_POWER_AUTOMATIC) {
2360 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2361 mbm = nla_get_u32(info->attrs[idx]);
2362 }
2363
2364 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2365 if (result)
2366 return result;
2367 }
2368
2369 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2370 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2371 u32 tx_ant, rx_ant;
2372
2373 if ((!rdev->wiphy.available_antennas_tx &&
2374 !rdev->wiphy.available_antennas_rx) ||
2375 !rdev->ops->set_antenna)
2376 return -EOPNOTSUPP;
2377
2378 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2379 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2380
2381 /* reject antenna configurations which don't match the
2382 * available antenna masks, except for the "all" mask */
2383 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2384 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2385 return -EINVAL;
2386
2387 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2388 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2389
2390 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2391 if (result)
2392 return result;
2393 }
2394
2395 changed = 0;
2396
2397 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2398 retry_short = nla_get_u8(
2399 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2400 if (retry_short == 0)
2401 return -EINVAL;
2402
2403 changed |= WIPHY_PARAM_RETRY_SHORT;
2404 }
2405
2406 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2407 retry_long = nla_get_u8(
2408 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2409 if (retry_long == 0)
2410 return -EINVAL;
2411
2412 changed |= WIPHY_PARAM_RETRY_LONG;
2413 }
2414
2415 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2416 frag_threshold = nla_get_u32(
2417 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2418 if (frag_threshold < 256)
2419 return -EINVAL;
2420
2421 if (frag_threshold != (u32) -1) {
2422 /*
2423 * Fragments (apart from the last one) are required to
2424 * have even length. Make the fragmentation code
2425 * simpler by stripping LSB should someone try to use
2426 * odd threshold value.
2427 */
2428 frag_threshold &= ~0x1;
2429 }
2430 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2431 }
2432
2433 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2434 rts_threshold = nla_get_u32(
2435 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2436 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2437 }
2438
2439 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2440 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2441 return -EINVAL;
2442
2443 coverage_class = nla_get_u8(
2444 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2445 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2446 }
2447
2448 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2449 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2450 return -EOPNOTSUPP;
2451
2452 changed |= WIPHY_PARAM_DYN_ACK;
2453 }
2454
2455 if (changed) {
2456 u8 old_retry_short, old_retry_long;
2457 u32 old_frag_threshold, old_rts_threshold;
2458 u8 old_coverage_class;
2459
2460 if (!rdev->ops->set_wiphy_params)
2461 return -EOPNOTSUPP;
2462
2463 old_retry_short = rdev->wiphy.retry_short;
2464 old_retry_long = rdev->wiphy.retry_long;
2465 old_frag_threshold = rdev->wiphy.frag_threshold;
2466 old_rts_threshold = rdev->wiphy.rts_threshold;
2467 old_coverage_class = rdev->wiphy.coverage_class;
2468
2469 if (changed & WIPHY_PARAM_RETRY_SHORT)
2470 rdev->wiphy.retry_short = retry_short;
2471 if (changed & WIPHY_PARAM_RETRY_LONG)
2472 rdev->wiphy.retry_long = retry_long;
2473 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2474 rdev->wiphy.frag_threshold = frag_threshold;
2475 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2476 rdev->wiphy.rts_threshold = rts_threshold;
2477 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2478 rdev->wiphy.coverage_class = coverage_class;
2479
2480 result = rdev_set_wiphy_params(rdev, changed);
2481 if (result) {
2482 rdev->wiphy.retry_short = old_retry_short;
2483 rdev->wiphy.retry_long = old_retry_long;
2484 rdev->wiphy.frag_threshold = old_frag_threshold;
2485 rdev->wiphy.rts_threshold = old_rts_threshold;
2486 rdev->wiphy.coverage_class = old_coverage_class;
2487 return result;
2488 }
2489 }
2490 return 0;
2491 }
2492
2493 static inline u64 wdev_id(struct wireless_dev *wdev)
2494 {
2495 return (u64)wdev->identifier |
2496 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2497 }
2498
2499 static int nl80211_send_chandef(struct sk_buff *msg,
2500 const struct cfg80211_chan_def *chandef)
2501 {
2502 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2503 return -EINVAL;
2504
2505 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2506 chandef->chan->center_freq))
2507 return -ENOBUFS;
2508 switch (chandef->width) {
2509 case NL80211_CHAN_WIDTH_20_NOHT:
2510 case NL80211_CHAN_WIDTH_20:
2511 case NL80211_CHAN_WIDTH_40:
2512 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2513 cfg80211_get_chandef_type(chandef)))
2514 return -ENOBUFS;
2515 break;
2516 default:
2517 break;
2518 }
2519 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2520 return -ENOBUFS;
2521 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2522 return -ENOBUFS;
2523 if (chandef->center_freq2 &&
2524 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2525 return -ENOBUFS;
2526 return 0;
2527 }
2528
2529 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2530 struct cfg80211_registered_device *rdev,
2531 struct wireless_dev *wdev, bool removal)
2532 {
2533 struct net_device *dev = wdev->netdev;
2534 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2535 void *hdr;
2536
2537 if (removal)
2538 cmd = NL80211_CMD_DEL_INTERFACE;
2539
2540 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2541 if (!hdr)
2542 return -1;
2543
2544 if (dev &&
2545 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2546 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2547 goto nla_put_failure;
2548
2549 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2550 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2551 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2552 NL80211_ATTR_PAD) ||
2553 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2554 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2555 rdev->devlist_generation ^
2556 (cfg80211_rdev_list_generation << 2)))
2557 goto nla_put_failure;
2558
2559 if (rdev->ops->get_channel) {
2560 int ret;
2561 struct cfg80211_chan_def chandef;
2562
2563 ret = rdev_get_channel(rdev, wdev, &chandef);
2564 if (ret == 0) {
2565 if (nl80211_send_chandef(msg, &chandef))
2566 goto nla_put_failure;
2567 }
2568 }
2569
2570 if (rdev->ops->get_tx_power) {
2571 int dbm, ret;
2572
2573 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2574 if (ret == 0 &&
2575 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2576 DBM_TO_MBM(dbm)))
2577 goto nla_put_failure;
2578 }
2579
2580 if (wdev->ssid_len) {
2581 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2582 goto nla_put_failure;
2583 }
2584
2585 genlmsg_end(msg, hdr);
2586 return 0;
2587
2588 nla_put_failure:
2589 genlmsg_cancel(msg, hdr);
2590 return -EMSGSIZE;
2591 }
2592
2593 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2594 {
2595 int wp_idx = 0;
2596 int if_idx = 0;
2597 int wp_start = cb->args[0];
2598 int if_start = cb->args[1];
2599 int filter_wiphy = -1;
2600 struct cfg80211_registered_device *rdev;
2601 struct wireless_dev *wdev;
2602
2603 rtnl_lock();
2604 if (!cb->args[2]) {
2605 struct nl80211_dump_wiphy_state state = {
2606 .filter_wiphy = -1,
2607 };
2608 int ret;
2609
2610 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2611 if (ret)
2612 return ret;
2613
2614 filter_wiphy = state.filter_wiphy;
2615
2616 /*
2617 * if filtering, set cb->args[2] to +1 since 0 is the default
2618 * value needed to determine that parsing is necessary.
2619 */
2620 if (filter_wiphy >= 0)
2621 cb->args[2] = filter_wiphy + 1;
2622 else
2623 cb->args[2] = -1;
2624 } else if (cb->args[2] > 0) {
2625 filter_wiphy = cb->args[2] - 1;
2626 }
2627
2628 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2629 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2630 continue;
2631 if (wp_idx < wp_start) {
2632 wp_idx++;
2633 continue;
2634 }
2635
2636 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2637 continue;
2638
2639 if_idx = 0;
2640
2641 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2642 if (if_idx < if_start) {
2643 if_idx++;
2644 continue;
2645 }
2646 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2647 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2648 rdev, wdev, false) < 0) {
2649 goto out;
2650 }
2651 if_idx++;
2652 }
2653
2654 wp_idx++;
2655 }
2656 out:
2657 rtnl_unlock();
2658
2659 cb->args[0] = wp_idx;
2660 cb->args[1] = if_idx;
2661
2662 return skb->len;
2663 }
2664
2665 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2666 {
2667 struct sk_buff *msg;
2668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2669 struct wireless_dev *wdev = info->user_ptr[1];
2670
2671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2672 if (!msg)
2673 return -ENOMEM;
2674
2675 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2676 rdev, wdev, false) < 0) {
2677 nlmsg_free(msg);
2678 return -ENOBUFS;
2679 }
2680
2681 return genlmsg_reply(msg, info);
2682 }
2683
2684 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2685 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2686 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2687 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2688 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2689 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2690 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2691 };
2692
2693 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2694 {
2695 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2696 int flag;
2697
2698 *mntrflags = 0;
2699
2700 if (!nla)
2701 return -EINVAL;
2702
2703 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2704 nla, mntr_flags_policy))
2705 return -EINVAL;
2706
2707 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2708 if (flags[flag])
2709 *mntrflags |= (1<<flag);
2710
2711 return 0;
2712 }
2713
2714 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2715 struct net_device *netdev, u8 use_4addr,
2716 enum nl80211_iftype iftype)
2717 {
2718 if (!use_4addr) {
2719 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2720 return -EBUSY;
2721 return 0;
2722 }
2723
2724 switch (iftype) {
2725 case NL80211_IFTYPE_AP_VLAN:
2726 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2727 return 0;
2728 break;
2729 case NL80211_IFTYPE_STATION:
2730 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2731 return 0;
2732 break;
2733 default:
2734 break;
2735 }
2736
2737 return -EOPNOTSUPP;
2738 }
2739
2740 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2741 {
2742 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2743 struct vif_params params;
2744 int err;
2745 enum nl80211_iftype otype, ntype;
2746 struct net_device *dev = info->user_ptr[1];
2747 u32 _flags, *flags = NULL;
2748 bool change = false;
2749
2750 memset(&params, 0, sizeof(params));
2751
2752 otype = ntype = dev->ieee80211_ptr->iftype;
2753
2754 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2755 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2756 if (otype != ntype)
2757 change = true;
2758 if (ntype > NL80211_IFTYPE_MAX)
2759 return -EINVAL;
2760 }
2761
2762 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2763 struct wireless_dev *wdev = dev->ieee80211_ptr;
2764
2765 if (ntype != NL80211_IFTYPE_MESH_POINT)
2766 return -EINVAL;
2767 if (netif_running(dev))
2768 return -EBUSY;
2769
2770 wdev_lock(wdev);
2771 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2772 IEEE80211_MAX_MESH_ID_LEN);
2773 wdev->mesh_id_up_len =
2774 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2775 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2776 wdev->mesh_id_up_len);
2777 wdev_unlock(wdev);
2778 }
2779
2780 if (info->attrs[NL80211_ATTR_4ADDR]) {
2781 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2782 change = true;
2783 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2784 if (err)
2785 return err;
2786 } else {
2787 params.use_4addr = -1;
2788 }
2789
2790 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2791 if (ntype != NL80211_IFTYPE_MONITOR)
2792 return -EINVAL;
2793 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2794 &_flags);
2795 if (err)
2796 return err;
2797
2798 flags = &_flags;
2799 change = true;
2800 }
2801
2802 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2803 const u8 *mumimo_groups;
2804 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2805
2806 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2807 return -EOPNOTSUPP;
2808
2809 mumimo_groups =
2810 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2811
2812 /* bits 0 and 63 are reserved and must be zero */
2813 if ((mumimo_groups[0] & BIT(7)) ||
2814 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2815 return -EINVAL;
2816
2817 memcpy(params.vht_mumimo_groups, mumimo_groups,
2818 VHT_MUMIMO_GROUPS_DATA_LEN);
2819 change = true;
2820 }
2821
2822 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2823 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2824
2825 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2826 return -EOPNOTSUPP;
2827
2828 nla_memcpy(params.macaddr,
2829 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2830 ETH_ALEN);
2831 change = true;
2832 }
2833
2834 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2835 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2836 return -EOPNOTSUPP;
2837
2838 if (change)
2839 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2840 else
2841 err = 0;
2842
2843 if (!err && params.use_4addr != -1)
2844 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2845
2846 return err;
2847 }
2848
2849 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2850 {
2851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2852 struct vif_params params;
2853 struct wireless_dev *wdev;
2854 struct sk_buff *msg;
2855 int err;
2856 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2857 u32 flags;
2858
2859 /* to avoid failing a new interface creation due to pending removal */
2860 cfg80211_destroy_ifaces(rdev);
2861
2862 memset(&params, 0, sizeof(params));
2863
2864 if (!info->attrs[NL80211_ATTR_IFNAME])
2865 return -EINVAL;
2866
2867 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2868 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2869 if (type > NL80211_IFTYPE_MAX)
2870 return -EINVAL;
2871 }
2872
2873 if (!rdev->ops->add_virtual_intf ||
2874 !(rdev->wiphy.interface_modes & (1 << type)))
2875 return -EOPNOTSUPP;
2876
2877 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2878 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2879 info->attrs[NL80211_ATTR_MAC]) {
2880 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2881 ETH_ALEN);
2882 if (!is_valid_ether_addr(params.macaddr))
2883 return -EADDRNOTAVAIL;
2884 }
2885
2886 if (info->attrs[NL80211_ATTR_4ADDR]) {
2887 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2888 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2889 if (err)
2890 return err;
2891 }
2892
2893 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2894 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2895 &flags);
2896
2897 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2898 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2899 return -EOPNOTSUPP;
2900
2901 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2902 if (!msg)
2903 return -ENOMEM;
2904
2905 wdev = rdev_add_virtual_intf(rdev,
2906 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2907 NET_NAME_USER, type, err ? NULL : &flags,
2908 &params);
2909 if (WARN_ON(!wdev)) {
2910 nlmsg_free(msg);
2911 return -EPROTO;
2912 } else if (IS_ERR(wdev)) {
2913 nlmsg_free(msg);
2914 return PTR_ERR(wdev);
2915 }
2916
2917 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2918 wdev->owner_nlportid = info->snd_portid;
2919
2920 switch (type) {
2921 case NL80211_IFTYPE_MESH_POINT:
2922 if (!info->attrs[NL80211_ATTR_MESH_ID])
2923 break;
2924 wdev_lock(wdev);
2925 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2926 IEEE80211_MAX_MESH_ID_LEN);
2927 wdev->mesh_id_up_len =
2928 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2929 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2930 wdev->mesh_id_up_len);
2931 wdev_unlock(wdev);
2932 break;
2933 case NL80211_IFTYPE_NAN:
2934 case NL80211_IFTYPE_P2P_DEVICE:
2935 /*
2936 * P2P Device and NAN do not have a netdev, so don't go
2937 * through the netdev notifier and must be added here
2938 */
2939 mutex_init(&wdev->mtx);
2940 INIT_LIST_HEAD(&wdev->event_list);
2941 spin_lock_init(&wdev->event_lock);
2942 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2943 spin_lock_init(&wdev->mgmt_registrations_lock);
2944
2945 wdev->identifier = ++rdev->wdev_id;
2946 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2947 rdev->devlist_generation++;
2948 break;
2949 default:
2950 break;
2951 }
2952
2953 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2954 rdev, wdev, false) < 0) {
2955 nlmsg_free(msg);
2956 return -ENOBUFS;
2957 }
2958
2959 /*
2960 * For wdevs which have no associated netdev object (e.g. of type
2961 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
2962 * For all other types, the event will be generated from the
2963 * netdev notifier
2964 */
2965 if (!wdev->netdev)
2966 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
2967
2968 return genlmsg_reply(msg, info);
2969 }
2970
2971 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2972 {
2973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2974 struct wireless_dev *wdev = info->user_ptr[1];
2975
2976 if (!rdev->ops->del_virtual_intf)
2977 return -EOPNOTSUPP;
2978
2979 /*
2980 * If we remove a wireless device without a netdev then clear
2981 * user_ptr[1] so that nl80211_post_doit won't dereference it
2982 * to check if it needs to do dev_put(). Otherwise it crashes
2983 * since the wdev has been freed, unlike with a netdev where
2984 * we need the dev_put() for the netdev to really be freed.
2985 */
2986 if (!wdev->netdev)
2987 info->user_ptr[1] = NULL;
2988
2989 return rdev_del_virtual_intf(rdev, wdev);
2990 }
2991
2992 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2993 {
2994 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2995 struct net_device *dev = info->user_ptr[1];
2996 u16 noack_map;
2997
2998 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2999 return -EINVAL;
3000
3001 if (!rdev->ops->set_noack_map)
3002 return -EOPNOTSUPP;
3003
3004 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3005
3006 return rdev_set_noack_map(rdev, dev, noack_map);
3007 }
3008
3009 struct get_key_cookie {
3010 struct sk_buff *msg;
3011 int error;
3012 int idx;
3013 };
3014
3015 static void get_key_callback(void *c, struct key_params *params)
3016 {
3017 struct nlattr *key;
3018 struct get_key_cookie *cookie = c;
3019
3020 if ((params->key &&
3021 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3022 params->key_len, params->key)) ||
3023 (params->seq &&
3024 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3025 params->seq_len, params->seq)) ||
3026 (params->cipher &&
3027 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3028 params->cipher)))
3029 goto nla_put_failure;
3030
3031 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3032 if (!key)
3033 goto nla_put_failure;
3034
3035 if ((params->key &&
3036 nla_put(cookie->msg, NL80211_KEY_DATA,
3037 params->key_len, params->key)) ||
3038 (params->seq &&
3039 nla_put(cookie->msg, NL80211_KEY_SEQ,
3040 params->seq_len, params->seq)) ||
3041 (params->cipher &&
3042 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3043 params->cipher)))
3044 goto nla_put_failure;
3045
3046 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3047 goto nla_put_failure;
3048
3049 nla_nest_end(cookie->msg, key);
3050
3051 return;
3052 nla_put_failure:
3053 cookie->error = 1;
3054 }
3055
3056 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3057 {
3058 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3059 int err;
3060 struct net_device *dev = info->user_ptr[1];
3061 u8 key_idx = 0;
3062 const u8 *mac_addr = NULL;
3063 bool pairwise;
3064 struct get_key_cookie cookie = {
3065 .error = 0,
3066 };
3067 void *hdr;
3068 struct sk_buff *msg;
3069
3070 if (info->attrs[NL80211_ATTR_KEY_IDX])
3071 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3072
3073 if (key_idx > 5)
3074 return -EINVAL;
3075
3076 if (info->attrs[NL80211_ATTR_MAC])
3077 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3078
3079 pairwise = !!mac_addr;
3080 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3081 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3082
3083 if (kt >= NUM_NL80211_KEYTYPES)
3084 return -EINVAL;
3085 if (kt != NL80211_KEYTYPE_GROUP &&
3086 kt != NL80211_KEYTYPE_PAIRWISE)
3087 return -EINVAL;
3088 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3089 }
3090
3091 if (!rdev->ops->get_key)
3092 return -EOPNOTSUPP;
3093
3094 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3095 return -ENOENT;
3096
3097 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3098 if (!msg)
3099 return -ENOMEM;
3100
3101 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3102 NL80211_CMD_NEW_KEY);
3103 if (!hdr)
3104 goto nla_put_failure;
3105
3106 cookie.msg = msg;
3107 cookie.idx = key_idx;
3108
3109 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3110 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3111 goto nla_put_failure;
3112 if (mac_addr &&
3113 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3114 goto nla_put_failure;
3115
3116 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3117 get_key_callback);
3118
3119 if (err)
3120 goto free_msg;
3121
3122 if (cookie.error)
3123 goto nla_put_failure;
3124
3125 genlmsg_end(msg, hdr);
3126 return genlmsg_reply(msg, info);
3127
3128 nla_put_failure:
3129 err = -ENOBUFS;
3130 free_msg:
3131 nlmsg_free(msg);
3132 return err;
3133 }
3134
3135 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3136 {
3137 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3138 struct key_parse key;
3139 int err;
3140 struct net_device *dev = info->user_ptr[1];
3141
3142 err = nl80211_parse_key(info, &key);
3143 if (err)
3144 return err;
3145
3146 if (key.idx < 0)
3147 return -EINVAL;
3148
3149 /* only support setting default key */
3150 if (!key.def && !key.defmgmt)
3151 return -EINVAL;
3152
3153 wdev_lock(dev->ieee80211_ptr);
3154
3155 if (key.def) {
3156 if (!rdev->ops->set_default_key) {
3157 err = -EOPNOTSUPP;
3158 goto out;
3159 }
3160
3161 err = nl80211_key_allowed(dev->ieee80211_ptr);
3162 if (err)
3163 goto out;
3164
3165 err = rdev_set_default_key(rdev, dev, key.idx,
3166 key.def_uni, key.def_multi);
3167
3168 if (err)
3169 goto out;
3170
3171 #ifdef CONFIG_CFG80211_WEXT
3172 dev->ieee80211_ptr->wext.default_key = key.idx;
3173 #endif
3174 } else {
3175 if (key.def_uni || !key.def_multi) {
3176 err = -EINVAL;
3177 goto out;
3178 }
3179
3180 if (!rdev->ops->set_default_mgmt_key) {
3181 err = -EOPNOTSUPP;
3182 goto out;
3183 }
3184
3185 err = nl80211_key_allowed(dev->ieee80211_ptr);
3186 if (err)
3187 goto out;
3188
3189 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3190 if (err)
3191 goto out;
3192
3193 #ifdef CONFIG_CFG80211_WEXT
3194 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3195 #endif
3196 }
3197
3198 out:
3199 wdev_unlock(dev->ieee80211_ptr);
3200
3201 return err;
3202 }
3203
3204 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3205 {
3206 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3207 int err;
3208 struct net_device *dev = info->user_ptr[1];
3209 struct key_parse key;
3210 const u8 *mac_addr = NULL;
3211
3212 err = nl80211_parse_key(info, &key);
3213 if (err)
3214 return err;
3215
3216 if (!key.p.key)
3217 return -EINVAL;
3218
3219 if (info->attrs[NL80211_ATTR_MAC])
3220 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3221
3222 if (key.type == -1) {
3223 if (mac_addr)
3224 key.type = NL80211_KEYTYPE_PAIRWISE;
3225 else
3226 key.type = NL80211_KEYTYPE_GROUP;
3227 }
3228
3229 /* for now */
3230 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3231 key.type != NL80211_KEYTYPE_GROUP)
3232 return -EINVAL;
3233
3234 if (!rdev->ops->add_key)
3235 return -EOPNOTSUPP;
3236
3237 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3238 key.type == NL80211_KEYTYPE_PAIRWISE,
3239 mac_addr))
3240 return -EINVAL;
3241
3242 wdev_lock(dev->ieee80211_ptr);
3243 err = nl80211_key_allowed(dev->ieee80211_ptr);
3244 if (!err)
3245 err = rdev_add_key(rdev, dev, key.idx,
3246 key.type == NL80211_KEYTYPE_PAIRWISE,
3247 mac_addr, &key.p);
3248 wdev_unlock(dev->ieee80211_ptr);
3249
3250 return err;
3251 }
3252
3253 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3254 {
3255 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256 int err;
3257 struct net_device *dev = info->user_ptr[1];
3258 u8 *mac_addr = NULL;
3259 struct key_parse key;
3260
3261 err = nl80211_parse_key(info, &key);
3262 if (err)
3263 return err;
3264
3265 if (info->attrs[NL80211_ATTR_MAC])
3266 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3267
3268 if (key.type == -1) {
3269 if (mac_addr)
3270 key.type = NL80211_KEYTYPE_PAIRWISE;
3271 else
3272 key.type = NL80211_KEYTYPE_GROUP;
3273 }
3274
3275 /* for now */
3276 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3277 key.type != NL80211_KEYTYPE_GROUP)
3278 return -EINVAL;
3279
3280 if (!rdev->ops->del_key)
3281 return -EOPNOTSUPP;
3282
3283 wdev_lock(dev->ieee80211_ptr);
3284 err = nl80211_key_allowed(dev->ieee80211_ptr);
3285
3286 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3287 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3288 err = -ENOENT;
3289
3290 if (!err)
3291 err = rdev_del_key(rdev, dev, key.idx,
3292 key.type == NL80211_KEYTYPE_PAIRWISE,
3293 mac_addr);
3294
3295 #ifdef CONFIG_CFG80211_WEXT
3296 if (!err) {
3297 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3298 dev->ieee80211_ptr->wext.default_key = -1;
3299 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3300 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3301 }
3302 #endif
3303 wdev_unlock(dev->ieee80211_ptr);
3304
3305 return err;
3306 }
3307
3308 /* This function returns an error or the number of nested attributes */
3309 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3310 {
3311 struct nlattr *attr;
3312 int n_entries = 0, tmp;
3313
3314 nla_for_each_nested(attr, nl_attr, tmp) {
3315 if (nla_len(attr) != ETH_ALEN)
3316 return -EINVAL;
3317
3318 n_entries++;
3319 }
3320
3321 return n_entries;
3322 }
3323
3324 /*
3325 * This function parses ACL information and allocates memory for ACL data.
3326 * On successful return, the calling function is responsible to free the
3327 * ACL buffer returned by this function.
3328 */
3329 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3330 struct genl_info *info)
3331 {
3332 enum nl80211_acl_policy acl_policy;
3333 struct nlattr *attr;
3334 struct cfg80211_acl_data *acl;
3335 int i = 0, n_entries, tmp;
3336
3337 if (!wiphy->max_acl_mac_addrs)
3338 return ERR_PTR(-EOPNOTSUPP);
3339
3340 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3341 return ERR_PTR(-EINVAL);
3342
3343 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3344 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3345 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3346 return ERR_PTR(-EINVAL);
3347
3348 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3349 return ERR_PTR(-EINVAL);
3350
3351 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3352 if (n_entries < 0)
3353 return ERR_PTR(n_entries);
3354
3355 if (n_entries > wiphy->max_acl_mac_addrs)
3356 return ERR_PTR(-ENOTSUPP);
3357
3358 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3359 GFP_KERNEL);
3360 if (!acl)
3361 return ERR_PTR(-ENOMEM);
3362
3363 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3364 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3365 i++;
3366 }
3367
3368 acl->n_acl_entries = n_entries;
3369 acl->acl_policy = acl_policy;
3370
3371 return acl;
3372 }
3373
3374 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3375 {
3376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3377 struct net_device *dev = info->user_ptr[1];
3378 struct cfg80211_acl_data *acl;
3379 int err;
3380
3381 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3382 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3383 return -EOPNOTSUPP;
3384
3385 if (!dev->ieee80211_ptr->beacon_interval)
3386 return -EINVAL;
3387
3388 acl = parse_acl_data(&rdev->wiphy, info);
3389 if (IS_ERR(acl))
3390 return PTR_ERR(acl);
3391
3392 err = rdev_set_mac_acl(rdev, dev, acl);
3393
3394 kfree(acl);
3395
3396 return err;
3397 }
3398
3399 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3400 u8 *rates, u8 rates_len)
3401 {
3402 u8 i;
3403 u32 mask = 0;
3404
3405 for (i = 0; i < rates_len; i++) {
3406 int rate = (rates[i] & 0x7f) * 5;
3407 int ridx;
3408
3409 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3410 struct ieee80211_rate *srate =
3411 &sband->bitrates[ridx];
3412 if (rate == srate->bitrate) {
3413 mask |= 1 << ridx;
3414 break;
3415 }
3416 }
3417 if (ridx == sband->n_bitrates)
3418 return 0; /* rate not found */
3419 }
3420
3421 return mask;
3422 }
3423
3424 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3425 u8 *rates, u8 rates_len,
3426 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3427 {
3428 u8 i;
3429
3430 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3431
3432 for (i = 0; i < rates_len; i++) {
3433 int ridx, rbit;
3434
3435 ridx = rates[i] / 8;
3436 rbit = BIT(rates[i] % 8);
3437
3438 /* check validity */
3439 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3440 return false;
3441
3442 /* check availability */
3443 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3444 mcs[ridx] |= rbit;
3445 else
3446 return false;
3447 }
3448
3449 return true;
3450 }
3451
3452 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3453 {
3454 u16 mcs_mask = 0;
3455
3456 switch (vht_mcs_map) {
3457 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3458 break;
3459 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3460 mcs_mask = 0x00FF;
3461 break;
3462 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3463 mcs_mask = 0x01FF;
3464 break;
3465 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3466 mcs_mask = 0x03FF;
3467 break;
3468 default:
3469 break;
3470 }
3471
3472 return mcs_mask;
3473 }
3474
3475 static void vht_build_mcs_mask(u16 vht_mcs_map,
3476 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3477 {
3478 u8 nss;
3479
3480 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3481 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3482 vht_mcs_map >>= 2;
3483 }
3484 }
3485
3486 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3487 struct nl80211_txrate_vht *txrate,
3488 u16 mcs[NL80211_VHT_NSS_MAX])
3489 {
3490 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3491 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3492 u8 i;
3493
3494 if (!sband->vht_cap.vht_supported)
3495 return false;
3496
3497 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3498
3499 /* Build vht_mcs_mask from VHT capabilities */
3500 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3501
3502 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3503 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3504 mcs[i] = txrate->mcs[i];
3505 else
3506 return false;
3507 }
3508
3509 return true;
3510 }
3511
3512 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3513 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3514 .len = NL80211_MAX_SUPP_RATES },
3515 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3516 .len = NL80211_MAX_SUPP_HT_RATES },
3517 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3518 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3519 };
3520
3521 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3522 struct cfg80211_bitrate_mask *mask)
3523 {
3524 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3525 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3526 int rem, i;
3527 struct nlattr *tx_rates;
3528 struct ieee80211_supported_band *sband;
3529 u16 vht_tx_mcs_map;
3530
3531 memset(mask, 0, sizeof(*mask));
3532 /* Default to all rates enabled */
3533 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3534 sband = rdev->wiphy.bands[i];
3535
3536 if (!sband)
3537 continue;
3538
3539 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3540 memcpy(mask->control[i].ht_mcs,
3541 sband->ht_cap.mcs.rx_mask,
3542 sizeof(mask->control[i].ht_mcs));
3543
3544 if (!sband->vht_cap.vht_supported)
3545 continue;
3546
3547 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3548 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3549 }
3550
3551 /* if no rates are given set it back to the defaults */
3552 if (!info->attrs[NL80211_ATTR_TX_RATES])
3553 goto out;
3554
3555 /* The nested attribute uses enum nl80211_band as the index. This maps
3556 * directly to the enum nl80211_band values used in cfg80211.
3557 */
3558 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3559 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3560 enum nl80211_band band = nla_type(tx_rates);
3561 int err;
3562
3563 if (band < 0 || band >= NUM_NL80211_BANDS)
3564 return -EINVAL;
3565 sband = rdev->wiphy.bands[band];
3566 if (sband == NULL)
3567 return -EINVAL;
3568 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3569 nl80211_txattr_policy);
3570 if (err)
3571 return err;
3572 if (tb[NL80211_TXRATE_LEGACY]) {
3573 mask->control[band].legacy = rateset_to_mask(
3574 sband,
3575 nla_data(tb[NL80211_TXRATE_LEGACY]),
3576 nla_len(tb[NL80211_TXRATE_LEGACY]));
3577 if ((mask->control[band].legacy == 0) &&
3578 nla_len(tb[NL80211_TXRATE_LEGACY]))
3579 return -EINVAL;
3580 }
3581 if (tb[NL80211_TXRATE_HT]) {
3582 if (!ht_rateset_to_mask(
3583 sband,
3584 nla_data(tb[NL80211_TXRATE_HT]),
3585 nla_len(tb[NL80211_TXRATE_HT]),
3586 mask->control[band].ht_mcs))
3587 return -EINVAL;
3588 }
3589 if (tb[NL80211_TXRATE_VHT]) {
3590 if (!vht_set_mcs_mask(
3591 sband,
3592 nla_data(tb[NL80211_TXRATE_VHT]),
3593 mask->control[band].vht_mcs))
3594 return -EINVAL;
3595 }
3596 if (tb[NL80211_TXRATE_GI]) {
3597 mask->control[band].gi =
3598 nla_get_u8(tb[NL80211_TXRATE_GI]);
3599 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3600 return -EINVAL;
3601 }
3602
3603 if (mask->control[band].legacy == 0) {
3604 /* don't allow empty legacy rates if HT or VHT
3605 * are not even supported.
3606 */
3607 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3608 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3609 return -EINVAL;
3610
3611 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3612 if (mask->control[band].ht_mcs[i])
3613 goto out;
3614
3615 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3616 if (mask->control[band].vht_mcs[i])
3617 goto out;
3618
3619 /* legacy and mcs rates may not be both empty */
3620 return -EINVAL;
3621 }
3622 }
3623
3624 out:
3625 return 0;
3626 }
3627
3628 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3629 enum nl80211_band band,
3630 struct cfg80211_bitrate_mask *beacon_rate)
3631 {
3632 u32 count_ht, count_vht, i;
3633 u32 rate = beacon_rate->control[band].legacy;
3634
3635 /* Allow only one rate */
3636 if (hweight32(rate) > 1)
3637 return -EINVAL;
3638
3639 count_ht = 0;
3640 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3641 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3642 return -EINVAL;
3643 } else if (beacon_rate->control[band].ht_mcs[i]) {
3644 count_ht++;
3645 if (count_ht > 1)
3646 return -EINVAL;
3647 }
3648 if (count_ht && rate)
3649 return -EINVAL;
3650 }
3651
3652 count_vht = 0;
3653 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3654 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3655 return -EINVAL;
3656 } else if (beacon_rate->control[band].vht_mcs[i]) {
3657 count_vht++;
3658 if (count_vht > 1)
3659 return -EINVAL;
3660 }
3661 if (count_vht && rate)
3662 return -EINVAL;
3663 }
3664
3665 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3666 return -EINVAL;
3667
3668 if (rate &&
3669 !wiphy_ext_feature_isset(&rdev->wiphy,
3670 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3671 return -EINVAL;
3672 if (count_ht &&
3673 !wiphy_ext_feature_isset(&rdev->wiphy,
3674 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3675 return -EINVAL;
3676 if (count_vht &&
3677 !wiphy_ext_feature_isset(&rdev->wiphy,
3678 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3679 return -EINVAL;
3680
3681 return 0;
3682 }
3683
3684 static int nl80211_parse_beacon(struct nlattr *attrs[],
3685 struct cfg80211_beacon_data *bcn)
3686 {
3687 bool haveinfo = false;
3688
3689 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3690 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3691 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3692 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3693 return -EINVAL;
3694
3695 memset(bcn, 0, sizeof(*bcn));
3696
3697 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3698 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3699 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3700 if (!bcn->head_len)
3701 return -EINVAL;
3702 haveinfo = true;
3703 }
3704
3705 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3706 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3707 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3708 haveinfo = true;
3709 }
3710
3711 if (!haveinfo)
3712 return -EINVAL;
3713
3714 if (attrs[NL80211_ATTR_IE]) {
3715 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3716 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3717 }
3718
3719 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3720 bcn->proberesp_ies =
3721 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3722 bcn->proberesp_ies_len =
3723 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3724 }
3725
3726 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3727 bcn->assocresp_ies =
3728 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3729 bcn->assocresp_ies_len =
3730 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3731 }
3732
3733 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3734 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3735 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3736 }
3737
3738 return 0;
3739 }
3740
3741 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3742 struct cfg80211_ap_settings *params)
3743 {
3744 struct wireless_dev *wdev;
3745 bool ret = false;
3746
3747 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3748 if (wdev->iftype != NL80211_IFTYPE_AP &&
3749 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3750 continue;
3751
3752 if (!wdev->preset_chandef.chan)
3753 continue;
3754
3755 params->chandef = wdev->preset_chandef;
3756 ret = true;
3757 break;
3758 }
3759
3760 return ret;
3761 }
3762
3763 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3764 enum nl80211_auth_type auth_type,
3765 enum nl80211_commands cmd)
3766 {
3767 if (auth_type > NL80211_AUTHTYPE_MAX)
3768 return false;
3769
3770 switch (cmd) {
3771 case NL80211_CMD_AUTHENTICATE:
3772 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3773 auth_type == NL80211_AUTHTYPE_SAE)
3774 return false;
3775 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3776 NL80211_EXT_FEATURE_FILS_STA) &&
3777 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3778 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3779 auth_type == NL80211_AUTHTYPE_FILS_PK))
3780 return false;
3781 return true;
3782 case NL80211_CMD_CONNECT:
3783 case NL80211_CMD_START_AP:
3784 /* SAE not supported yet */
3785 if (auth_type == NL80211_AUTHTYPE_SAE)
3786 return false;
3787 /* FILS not supported yet */
3788 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3789 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3790 auth_type == NL80211_AUTHTYPE_FILS_PK)
3791 return false;
3792 return true;
3793 default:
3794 return false;
3795 }
3796 }
3797
3798 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3799 {
3800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3801 struct net_device *dev = info->user_ptr[1];
3802 struct wireless_dev *wdev = dev->ieee80211_ptr;
3803 struct cfg80211_ap_settings params;
3804 int err;
3805
3806 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3807 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3808 return -EOPNOTSUPP;
3809
3810 if (!rdev->ops->start_ap)
3811 return -EOPNOTSUPP;
3812
3813 if (wdev->beacon_interval)
3814 return -EALREADY;
3815
3816 memset(&params, 0, sizeof(params));
3817
3818 /* these are required for START_AP */
3819 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3820 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3821 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3822 return -EINVAL;
3823
3824 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3825 if (err)
3826 return err;
3827
3828 params.beacon_interval =
3829 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3830 params.dtim_period =
3831 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3832
3833 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3834 params.beacon_interval);
3835 if (err)
3836 return err;
3837
3838 /*
3839 * In theory, some of these attributes should be required here
3840 * but since they were not used when the command was originally
3841 * added, keep them optional for old user space programs to let
3842 * them continue to work with drivers that do not need the
3843 * additional information -- drivers must check!
3844 */
3845 if (info->attrs[NL80211_ATTR_SSID]) {
3846 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3847 params.ssid_len =
3848 nla_len(info->attrs[NL80211_ATTR_SSID]);
3849 if (params.ssid_len == 0 ||
3850 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3851 return -EINVAL;
3852 }
3853
3854 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3855 params.hidden_ssid = nla_get_u32(
3856 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3857 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3858 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3859 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3860 return -EINVAL;
3861 }
3862
3863 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3864
3865 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3866 params.auth_type = nla_get_u32(
3867 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3868 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3869 NL80211_CMD_START_AP))
3870 return -EINVAL;
3871 } else
3872 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3873
3874 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3875 NL80211_MAX_NR_CIPHER_SUITES);
3876 if (err)
3877 return err;
3878
3879 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3880 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3881 return -EOPNOTSUPP;
3882 params.inactivity_timeout = nla_get_u16(
3883 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3884 }
3885
3886 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3887 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3888 return -EINVAL;
3889 params.p2p_ctwindow =
3890 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3891 if (params.p2p_ctwindow > 127)
3892 return -EINVAL;
3893 if (params.p2p_ctwindow != 0 &&
3894 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3895 return -EINVAL;
3896 }
3897
3898 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3899 u8 tmp;
3900
3901 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3902 return -EINVAL;
3903 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3904 if (tmp > 1)
3905 return -EINVAL;
3906 params.p2p_opp_ps = tmp;
3907 if (params.p2p_opp_ps != 0 &&
3908 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3909 return -EINVAL;
3910 }
3911
3912 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3913 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3914 if (err)
3915 return err;
3916 } else if (wdev->preset_chandef.chan) {
3917 params.chandef = wdev->preset_chandef;
3918 } else if (!nl80211_get_ap_channel(rdev, &params))
3919 return -EINVAL;
3920
3921 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3922 wdev->iftype))
3923 return -EINVAL;
3924
3925 if (info->attrs[NL80211_ATTR_TX_RATES]) {
3926 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
3927 if (err)
3928 return err;
3929
3930 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
3931 &params.beacon_rate);
3932 if (err)
3933 return err;
3934 }
3935
3936 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3937 params.smps_mode =
3938 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3939 switch (params.smps_mode) {
3940 case NL80211_SMPS_OFF:
3941 break;
3942 case NL80211_SMPS_STATIC:
3943 if (!(rdev->wiphy.features &
3944 NL80211_FEATURE_STATIC_SMPS))
3945 return -EINVAL;
3946 break;
3947 case NL80211_SMPS_DYNAMIC:
3948 if (!(rdev->wiphy.features &
3949 NL80211_FEATURE_DYNAMIC_SMPS))
3950 return -EINVAL;
3951 break;
3952 default:
3953 return -EINVAL;
3954 }
3955 } else {
3956 params.smps_mode = NL80211_SMPS_OFF;
3957 }
3958
3959 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3960 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3961 return -EOPNOTSUPP;
3962
3963 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3964 params.acl = parse_acl_data(&rdev->wiphy, info);
3965 if (IS_ERR(params.acl))
3966 return PTR_ERR(params.acl);
3967 }
3968
3969 wdev_lock(wdev);
3970 err = rdev_start_ap(rdev, dev, &params);
3971 if (!err) {
3972 wdev->preset_chandef = params.chandef;
3973 wdev->beacon_interval = params.beacon_interval;
3974 wdev->chandef = params.chandef;
3975 wdev->ssid_len = params.ssid_len;
3976 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3977 }
3978 wdev_unlock(wdev);
3979
3980 kfree(params.acl);
3981
3982 return err;
3983 }
3984
3985 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3986 {
3987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988 struct net_device *dev = info->user_ptr[1];
3989 struct wireless_dev *wdev = dev->ieee80211_ptr;
3990 struct cfg80211_beacon_data params;
3991 int err;
3992
3993 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3994 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3995 return -EOPNOTSUPP;
3996
3997 if (!rdev->ops->change_beacon)
3998 return -EOPNOTSUPP;
3999
4000 if (!wdev->beacon_interval)
4001 return -EINVAL;
4002
4003 err = nl80211_parse_beacon(info->attrs, &params);
4004 if (err)
4005 return err;
4006
4007 wdev_lock(wdev);
4008 err = rdev_change_beacon(rdev, dev, &params);
4009 wdev_unlock(wdev);
4010
4011 return err;
4012 }
4013
4014 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4015 {
4016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017 struct net_device *dev = info->user_ptr[1];
4018
4019 return cfg80211_stop_ap(rdev, dev, false);
4020 }
4021
4022 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4023 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4024 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4025 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4026 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4027 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4028 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4029 };
4030
4031 static int parse_station_flags(struct genl_info *info,
4032 enum nl80211_iftype iftype,
4033 struct station_parameters *params)
4034 {
4035 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4036 struct nlattr *nla;
4037 int flag;
4038
4039 /*
4040 * Try parsing the new attribute first so userspace
4041 * can specify both for older kernels.
4042 */
4043 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4044 if (nla) {
4045 struct nl80211_sta_flag_update *sta_flags;
4046
4047 sta_flags = nla_data(nla);
4048 params->sta_flags_mask = sta_flags->mask;
4049 params->sta_flags_set = sta_flags->set;
4050 params->sta_flags_set &= params->sta_flags_mask;
4051 if ((params->sta_flags_mask |
4052 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4053 return -EINVAL;
4054 return 0;
4055 }
4056
4057 /* if present, parse the old attribute */
4058
4059 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4060 if (!nla)
4061 return 0;
4062
4063 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
4064 nla, sta_flags_policy))
4065 return -EINVAL;
4066
4067 /*
4068 * Only allow certain flags for interface types so that
4069 * other attributes are silently ignored. Remember that
4070 * this is backward compatibility code with old userspace
4071 * and shouldn't be hit in other cases anyway.
4072 */
4073 switch (iftype) {
4074 case NL80211_IFTYPE_AP:
4075 case NL80211_IFTYPE_AP_VLAN:
4076 case NL80211_IFTYPE_P2P_GO:
4077 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4078 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4079 BIT(NL80211_STA_FLAG_WME) |
4080 BIT(NL80211_STA_FLAG_MFP);
4081 break;
4082 case NL80211_IFTYPE_P2P_CLIENT:
4083 case NL80211_IFTYPE_STATION:
4084 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4085 BIT(NL80211_STA_FLAG_TDLS_PEER);
4086 break;
4087 case NL80211_IFTYPE_MESH_POINT:
4088 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4089 BIT(NL80211_STA_FLAG_MFP) |
4090 BIT(NL80211_STA_FLAG_AUTHORIZED);
4091 default:
4092 return -EINVAL;
4093 }
4094
4095 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4096 if (flags[flag]) {
4097 params->sta_flags_set |= (1<<flag);
4098
4099 /* no longer support new API additions in old API */
4100 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4101 return -EINVAL;
4102 }
4103 }
4104
4105 return 0;
4106 }
4107
4108 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4109 int attr)
4110 {
4111 struct nlattr *rate;
4112 u32 bitrate;
4113 u16 bitrate_compat;
4114 enum nl80211_attrs rate_flg;
4115
4116 rate = nla_nest_start(msg, attr);
4117 if (!rate)
4118 return false;
4119
4120 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4121 bitrate = cfg80211_calculate_bitrate(info);
4122 /* report 16-bit bitrate only if we can */
4123 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4124 if (bitrate > 0 &&
4125 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4126 return false;
4127 if (bitrate_compat > 0 &&
4128 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4129 return false;
4130
4131 switch (info->bw) {
4132 case RATE_INFO_BW_5:
4133 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4134 break;
4135 case RATE_INFO_BW_10:
4136 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4137 break;
4138 default:
4139 WARN_ON(1);
4140 /* fall through */
4141 case RATE_INFO_BW_20:
4142 rate_flg = 0;
4143 break;
4144 case RATE_INFO_BW_40:
4145 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4146 break;
4147 case RATE_INFO_BW_80:
4148 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4149 break;
4150 case RATE_INFO_BW_160:
4151 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4152 break;
4153 }
4154
4155 if (rate_flg && nla_put_flag(msg, rate_flg))
4156 return false;
4157
4158 if (info->flags & RATE_INFO_FLAGS_MCS) {
4159 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4160 return false;
4161 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4162 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4163 return false;
4164 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4165 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4166 return false;
4167 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4168 return false;
4169 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4170 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4171 return false;
4172 }
4173
4174 nla_nest_end(msg, rate);
4175 return true;
4176 }
4177
4178 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4179 int id)
4180 {
4181 void *attr;
4182 int i = 0;
4183
4184 if (!mask)
4185 return true;
4186
4187 attr = nla_nest_start(msg, id);
4188 if (!attr)
4189 return false;
4190
4191 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4192 if (!(mask & BIT(i)))
4193 continue;
4194
4195 if (nla_put_u8(msg, i, signal[i]))
4196 return false;
4197 }
4198
4199 nla_nest_end(msg, attr);
4200
4201 return true;
4202 }
4203
4204 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4205 u32 seq, int flags,
4206 struct cfg80211_registered_device *rdev,
4207 struct net_device *dev,
4208 const u8 *mac_addr, struct station_info *sinfo)
4209 {
4210 void *hdr;
4211 struct nlattr *sinfoattr, *bss_param;
4212
4213 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4214 if (!hdr)
4215 return -1;
4216
4217 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4218 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4219 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4220 goto nla_put_failure;
4221
4222 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4223 if (!sinfoattr)
4224 goto nla_put_failure;
4225
4226 #define PUT_SINFO(attr, memb, type) do { \
4227 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4228 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4229 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4230 sinfo->memb)) \
4231 goto nla_put_failure; \
4232 } while (0)
4233 #define PUT_SINFO_U64(attr, memb) do { \
4234 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4235 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4236 sinfo->memb, NL80211_STA_INFO_PAD)) \
4237 goto nla_put_failure; \
4238 } while (0)
4239
4240 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4241 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4242
4243 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4244 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4245 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4246 (u32)sinfo->rx_bytes))
4247 goto nla_put_failure;
4248
4249 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4250 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4251 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4252 (u32)sinfo->tx_bytes))
4253 goto nla_put_failure;
4254
4255 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4256 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4257 PUT_SINFO(LLID, llid, u16);
4258 PUT_SINFO(PLID, plid, u16);
4259 PUT_SINFO(PLINK_STATE, plink_state, u8);
4260 PUT_SINFO_U64(RX_DURATION, rx_duration);
4261
4262 switch (rdev->wiphy.signal_type) {
4263 case CFG80211_SIGNAL_TYPE_MBM:
4264 PUT_SINFO(SIGNAL, signal, u8);
4265 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4266 break;
4267 default:
4268 break;
4269 }
4270 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4271 if (!nl80211_put_signal(msg, sinfo->chains,
4272 sinfo->chain_signal,
4273 NL80211_STA_INFO_CHAIN_SIGNAL))
4274 goto nla_put_failure;
4275 }
4276 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4277 if (!nl80211_put_signal(msg, sinfo->chains,
4278 sinfo->chain_signal_avg,
4279 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4280 goto nla_put_failure;
4281 }
4282 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4283 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4284 NL80211_STA_INFO_TX_BITRATE))
4285 goto nla_put_failure;
4286 }
4287 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4288 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4289 NL80211_STA_INFO_RX_BITRATE))
4290 goto nla_put_failure;
4291 }
4292
4293 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4294 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4295 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4296 PUT_SINFO(TX_FAILED, tx_failed, u32);
4297 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4298 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4299 PUT_SINFO(LOCAL_PM, local_pm, u32);
4300 PUT_SINFO(PEER_PM, peer_pm, u32);
4301 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4302
4303 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4304 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4305 if (!bss_param)
4306 goto nla_put_failure;
4307
4308 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4309 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4310 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4311 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4312 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4313 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4314 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4315 sinfo->bss_param.dtim_period) ||
4316 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4317 sinfo->bss_param.beacon_interval))
4318 goto nla_put_failure;
4319
4320 nla_nest_end(msg, bss_param);
4321 }
4322 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4323 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4324 sizeof(struct nl80211_sta_flag_update),
4325 &sinfo->sta_flags))
4326 goto nla_put_failure;
4327
4328 PUT_SINFO_U64(T_OFFSET, t_offset);
4329 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4330 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4331 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4332
4333 #undef PUT_SINFO
4334 #undef PUT_SINFO_U64
4335
4336 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4337 struct nlattr *tidsattr;
4338 int tid;
4339
4340 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4341 if (!tidsattr)
4342 goto nla_put_failure;
4343
4344 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4345 struct cfg80211_tid_stats *tidstats;
4346 struct nlattr *tidattr;
4347
4348 tidstats = &sinfo->pertid[tid];
4349
4350 if (!tidstats->filled)
4351 continue;
4352
4353 tidattr = nla_nest_start(msg, tid + 1);
4354 if (!tidattr)
4355 goto nla_put_failure;
4356
4357 #define PUT_TIDVAL_U64(attr, memb) do { \
4358 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4359 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4360 tidstats->memb, NL80211_TID_STATS_PAD)) \
4361 goto nla_put_failure; \
4362 } while (0)
4363
4364 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4365 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4366 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4367 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4368
4369 #undef PUT_TIDVAL_U64
4370 nla_nest_end(msg, tidattr);
4371 }
4372
4373 nla_nest_end(msg, tidsattr);
4374 }
4375
4376 nla_nest_end(msg, sinfoattr);
4377
4378 if (sinfo->assoc_req_ies_len &&
4379 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4380 sinfo->assoc_req_ies))
4381 goto nla_put_failure;
4382
4383 genlmsg_end(msg, hdr);
4384 return 0;
4385
4386 nla_put_failure:
4387 genlmsg_cancel(msg, hdr);
4388 return -EMSGSIZE;
4389 }
4390
4391 static int nl80211_dump_station(struct sk_buff *skb,
4392 struct netlink_callback *cb)
4393 {
4394 struct station_info sinfo;
4395 struct cfg80211_registered_device *rdev;
4396 struct wireless_dev *wdev;
4397 u8 mac_addr[ETH_ALEN];
4398 int sta_idx = cb->args[2];
4399 int err;
4400
4401 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4402 if (err)
4403 return err;
4404
4405 if (!wdev->netdev) {
4406 err = -EINVAL;
4407 goto out_err;
4408 }
4409
4410 if (!rdev->ops->dump_station) {
4411 err = -EOPNOTSUPP;
4412 goto out_err;
4413 }
4414
4415 while (1) {
4416 memset(&sinfo, 0, sizeof(sinfo));
4417 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4418 mac_addr, &sinfo);
4419 if (err == -ENOENT)
4420 break;
4421 if (err)
4422 goto out_err;
4423
4424 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4425 NETLINK_CB(cb->skb).portid,
4426 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4427 rdev, wdev->netdev, mac_addr,
4428 &sinfo) < 0)
4429 goto out;
4430
4431 sta_idx++;
4432 }
4433
4434 out:
4435 cb->args[2] = sta_idx;
4436 err = skb->len;
4437 out_err:
4438 nl80211_finish_wdev_dump(rdev);
4439
4440 return err;
4441 }
4442
4443 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4444 {
4445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4446 struct net_device *dev = info->user_ptr[1];
4447 struct station_info sinfo;
4448 struct sk_buff *msg;
4449 u8 *mac_addr = NULL;
4450 int err;
4451
4452 memset(&sinfo, 0, sizeof(sinfo));
4453
4454 if (!info->attrs[NL80211_ATTR_MAC])
4455 return -EINVAL;
4456
4457 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458
4459 if (!rdev->ops->get_station)
4460 return -EOPNOTSUPP;
4461
4462 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4463 if (err)
4464 return err;
4465
4466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4467 if (!msg)
4468 return -ENOMEM;
4469
4470 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4471 info->snd_portid, info->snd_seq, 0,
4472 rdev, dev, mac_addr, &sinfo) < 0) {
4473 nlmsg_free(msg);
4474 return -ENOBUFS;
4475 }
4476
4477 return genlmsg_reply(msg, info);
4478 }
4479
4480 int cfg80211_check_station_change(struct wiphy *wiphy,
4481 struct station_parameters *params,
4482 enum cfg80211_station_type statype)
4483 {
4484 if (params->listen_interval != -1 &&
4485 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4486 return -EINVAL;
4487
4488 if (params->support_p2p_ps != -1 &&
4489 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4490 return -EINVAL;
4491
4492 if (params->aid &&
4493 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4494 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4495 return -EINVAL;
4496
4497 /* When you run into this, adjust the code below for the new flag */
4498 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4499
4500 switch (statype) {
4501 case CFG80211_STA_MESH_PEER_KERNEL:
4502 case CFG80211_STA_MESH_PEER_USER:
4503 /*
4504 * No ignoring the TDLS flag here -- the userspace mesh
4505 * code doesn't have the bug of including TDLS in the
4506 * mask everywhere.
4507 */
4508 if (params->sta_flags_mask &
4509 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510 BIT(NL80211_STA_FLAG_MFP) |
4511 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4512 return -EINVAL;
4513 break;
4514 case CFG80211_STA_TDLS_PEER_SETUP:
4515 case CFG80211_STA_TDLS_PEER_ACTIVE:
4516 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4517 return -EINVAL;
4518 /* ignore since it can't change */
4519 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4520 break;
4521 default:
4522 /* disallow mesh-specific things */
4523 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4524 return -EINVAL;
4525 if (params->local_pm)
4526 return -EINVAL;
4527 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4528 return -EINVAL;
4529 }
4530
4531 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4532 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4533 /* TDLS can't be set, ... */
4534 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4535 return -EINVAL;
4536 /*
4537 * ... but don't bother the driver with it. This works around
4538 * a hostapd/wpa_supplicant issue -- it always includes the
4539 * TLDS_PEER flag in the mask even for AP mode.
4540 */
4541 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4542 }
4543
4544 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4545 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4546 /* reject other things that can't change */
4547 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4548 return -EINVAL;
4549 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4550 return -EINVAL;
4551 if (params->supported_rates)
4552 return -EINVAL;
4553 if (params->ext_capab || params->ht_capa || params->vht_capa)
4554 return -EINVAL;
4555 }
4556
4557 if (statype != CFG80211_STA_AP_CLIENT &&
4558 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4559 if (params->vlan)
4560 return -EINVAL;
4561 }
4562
4563 switch (statype) {
4564 case CFG80211_STA_AP_MLME_CLIENT:
4565 /* Use this only for authorizing/unauthorizing a station */
4566 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4567 return -EOPNOTSUPP;
4568 break;
4569 case CFG80211_STA_AP_CLIENT:
4570 case CFG80211_STA_AP_CLIENT_UNASSOC:
4571 /* accept only the listed bits */
4572 if (params->sta_flags_mask &
4573 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4574 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4575 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4576 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4577 BIT(NL80211_STA_FLAG_WME) |
4578 BIT(NL80211_STA_FLAG_MFP)))
4579 return -EINVAL;
4580
4581 /* but authenticated/associated only if driver handles it */
4582 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4583 params->sta_flags_mask &
4584 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4585 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4586 return -EINVAL;
4587 break;
4588 case CFG80211_STA_IBSS:
4589 case CFG80211_STA_AP_STA:
4590 /* reject any changes other than AUTHORIZED */
4591 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4592 return -EINVAL;
4593 break;
4594 case CFG80211_STA_TDLS_PEER_SETUP:
4595 /* reject any changes other than AUTHORIZED or WME */
4596 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4597 BIT(NL80211_STA_FLAG_WME)))
4598 return -EINVAL;
4599 /* force (at least) rates when authorizing */
4600 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4601 !params->supported_rates)
4602 return -EINVAL;
4603 break;
4604 case CFG80211_STA_TDLS_PEER_ACTIVE:
4605 /* reject any changes */
4606 return -EINVAL;
4607 case CFG80211_STA_MESH_PEER_KERNEL:
4608 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4609 return -EINVAL;
4610 break;
4611 case CFG80211_STA_MESH_PEER_USER:
4612 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4613 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4614 return -EINVAL;
4615 break;
4616 }
4617
4618 /*
4619 * Older kernel versions ignored this attribute entirely, so don't
4620 * reject attempts to update it but mark it as unused instead so the
4621 * driver won't look at the data.
4622 */
4623 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4624 statype != CFG80211_STA_TDLS_PEER_SETUP)
4625 params->opmode_notif_used = false;
4626
4627 return 0;
4628 }
4629 EXPORT_SYMBOL(cfg80211_check_station_change);
4630
4631 /*
4632 * Get vlan interface making sure it is running and on the right wiphy.
4633 */
4634 static struct net_device *get_vlan(struct genl_info *info,
4635 struct cfg80211_registered_device *rdev)
4636 {
4637 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4638 struct net_device *v;
4639 int ret;
4640
4641 if (!vlanattr)
4642 return NULL;
4643
4644 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4645 if (!v)
4646 return ERR_PTR(-ENODEV);
4647
4648 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4649 ret = -EINVAL;
4650 goto error;
4651 }
4652
4653 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4654 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4655 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4656 ret = -EINVAL;
4657 goto error;
4658 }
4659
4660 if (!netif_running(v)) {
4661 ret = -ENETDOWN;
4662 goto error;
4663 }
4664
4665 return v;
4666 error:
4667 dev_put(v);
4668 return ERR_PTR(ret);
4669 }
4670
4671 static const struct nla_policy
4672 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4673 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4674 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4675 };
4676
4677 static int nl80211_parse_sta_wme(struct genl_info *info,
4678 struct station_parameters *params)
4679 {
4680 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4681 struct nlattr *nla;
4682 int err;
4683
4684 /* parse WME attributes if present */
4685 if (!info->attrs[NL80211_ATTR_STA_WME])
4686 return 0;
4687
4688 nla = info->attrs[NL80211_ATTR_STA_WME];
4689 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4690 nl80211_sta_wme_policy);
4691 if (err)
4692 return err;
4693
4694 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4695 params->uapsd_queues = nla_get_u8(
4696 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4697 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4698 return -EINVAL;
4699
4700 if (tb[NL80211_STA_WME_MAX_SP])
4701 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4702
4703 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4704 return -EINVAL;
4705
4706 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4707
4708 return 0;
4709 }
4710
4711 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4712 struct station_parameters *params)
4713 {
4714 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4715 params->supported_channels =
4716 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4717 params->supported_channels_len =
4718 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4719 /*
4720 * Need to include at least one (first channel, number of
4721 * channels) tuple for each subband, and must have proper
4722 * tuples for the rest of the data as well.
4723 */
4724 if (params->supported_channels_len < 2)
4725 return -EINVAL;
4726 if (params->supported_channels_len % 2)
4727 return -EINVAL;
4728 }
4729
4730 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4731 params->supported_oper_classes =
4732 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4733 params->supported_oper_classes_len =
4734 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4735 /*
4736 * The value of the Length field of the Supported Operating
4737 * Classes element is between 2 and 253.
4738 */
4739 if (params->supported_oper_classes_len < 2 ||
4740 params->supported_oper_classes_len > 253)
4741 return -EINVAL;
4742 }
4743 return 0;
4744 }
4745
4746 static int nl80211_set_station_tdls(struct genl_info *info,
4747 struct station_parameters *params)
4748 {
4749 int err;
4750 /* Dummy STA entry gets updated once the peer capabilities are known */
4751 if (info->attrs[NL80211_ATTR_PEER_AID])
4752 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4753 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4754 params->ht_capa =
4755 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4756 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4757 params->vht_capa =
4758 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4759
4760 err = nl80211_parse_sta_channel_info(info, params);
4761 if (err)
4762 return err;
4763
4764 return nl80211_parse_sta_wme(info, params);
4765 }
4766
4767 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4768 {
4769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4770 struct net_device *dev = info->user_ptr[1];
4771 struct station_parameters params;
4772 u8 *mac_addr;
4773 int err;
4774
4775 memset(&params, 0, sizeof(params));
4776
4777 if (!rdev->ops->change_station)
4778 return -EOPNOTSUPP;
4779
4780 /*
4781 * AID and listen_interval properties can be set only for unassociated
4782 * station. Include these parameters here and will check them in
4783 * cfg80211_check_station_change().
4784 */
4785 if (info->attrs[NL80211_ATTR_STA_AID])
4786 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4787
4788 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4789 params.listen_interval =
4790 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4791 else
4792 params.listen_interval = -1;
4793
4794 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4795 u8 tmp;
4796
4797 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4798 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4799 return -EINVAL;
4800
4801 params.support_p2p_ps = tmp;
4802 } else {
4803 params.support_p2p_ps = -1;
4804 }
4805
4806 if (!info->attrs[NL80211_ATTR_MAC])
4807 return -EINVAL;
4808
4809 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4810
4811 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4812 params.supported_rates =
4813 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4814 params.supported_rates_len =
4815 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4816 }
4817
4818 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4819 params.capability =
4820 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4821 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4822 }
4823
4824 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4825 params.ext_capab =
4826 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4827 params.ext_capab_len =
4828 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4829 }
4830
4831 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4832 return -EINVAL;
4833
4834 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4835 params.plink_action =
4836 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4837 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4838 return -EINVAL;
4839 }
4840
4841 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4842 params.plink_state =
4843 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4844 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4845 return -EINVAL;
4846 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4847 params.peer_aid = nla_get_u16(
4848 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4849 if (params.peer_aid > IEEE80211_MAX_AID)
4850 return -EINVAL;
4851 }
4852 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4853 }
4854
4855 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4856 enum nl80211_mesh_power_mode pm = nla_get_u32(
4857 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4858
4859 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4860 pm > NL80211_MESH_POWER_MAX)
4861 return -EINVAL;
4862
4863 params.local_pm = pm;
4864 }
4865
4866 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4867 params.opmode_notif_used = true;
4868 params.opmode_notif =
4869 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4870 }
4871
4872 /* Include parameters for TDLS peer (will check later) */
4873 err = nl80211_set_station_tdls(info, &params);
4874 if (err)
4875 return err;
4876
4877 params.vlan = get_vlan(info, rdev);
4878 if (IS_ERR(params.vlan))
4879 return PTR_ERR(params.vlan);
4880
4881 switch (dev->ieee80211_ptr->iftype) {
4882 case NL80211_IFTYPE_AP:
4883 case NL80211_IFTYPE_AP_VLAN:
4884 case NL80211_IFTYPE_P2P_GO:
4885 case NL80211_IFTYPE_P2P_CLIENT:
4886 case NL80211_IFTYPE_STATION:
4887 case NL80211_IFTYPE_ADHOC:
4888 case NL80211_IFTYPE_MESH_POINT:
4889 break;
4890 default:
4891 err = -EOPNOTSUPP;
4892 goto out_put_vlan;
4893 }
4894
4895 /* driver will call cfg80211_check_station_change() */
4896 err = rdev_change_station(rdev, dev, mac_addr, &params);
4897
4898 out_put_vlan:
4899 if (params.vlan)
4900 dev_put(params.vlan);
4901
4902 return err;
4903 }
4904
4905 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4906 {
4907 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4908 int err;
4909 struct net_device *dev = info->user_ptr[1];
4910 struct station_parameters params;
4911 u8 *mac_addr = NULL;
4912 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4913 BIT(NL80211_STA_FLAG_ASSOCIATED);
4914
4915 memset(&params, 0, sizeof(params));
4916
4917 if (!rdev->ops->add_station)
4918 return -EOPNOTSUPP;
4919
4920 if (!info->attrs[NL80211_ATTR_MAC])
4921 return -EINVAL;
4922
4923 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4924 return -EINVAL;
4925
4926 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4927 return -EINVAL;
4928
4929 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4930 !info->attrs[NL80211_ATTR_PEER_AID])
4931 return -EINVAL;
4932
4933 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4934 params.supported_rates =
4935 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4936 params.supported_rates_len =
4937 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4938 params.listen_interval =
4939 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4940
4941 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4942 u8 tmp;
4943
4944 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4945 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4946 return -EINVAL;
4947
4948 params.support_p2p_ps = tmp;
4949 } else {
4950 /*
4951 * if not specified, assume it's supported for P2P GO interface,
4952 * and is NOT supported for AP interface
4953 */
4954 params.support_p2p_ps =
4955 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4956 }
4957
4958 if (info->attrs[NL80211_ATTR_PEER_AID])
4959 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4960 else
4961 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4962 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4963 return -EINVAL;
4964
4965 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4966 params.capability =
4967 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4968 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4969 }
4970
4971 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4972 params.ext_capab =
4973 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4974 params.ext_capab_len =
4975 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4976 }
4977
4978 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4979 params.ht_capa =
4980 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4981
4982 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4983 params.vht_capa =
4984 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4985
4986 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4987 params.opmode_notif_used = true;
4988 params.opmode_notif =
4989 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4990 }
4991
4992 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4993 params.plink_action =
4994 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4995 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4996 return -EINVAL;
4997 }
4998
4999 err = nl80211_parse_sta_channel_info(info, &params);
5000 if (err)
5001 return err;
5002
5003 err = nl80211_parse_sta_wme(info, &params);
5004 if (err)
5005 return err;
5006
5007 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5008 return -EINVAL;
5009
5010 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5011 * as userspace might just pass through the capabilities from the IEs
5012 * directly, rather than enforcing this restriction and returning an
5013 * error in this case.
5014 */
5015 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5016 params.ht_capa = NULL;
5017 params.vht_capa = NULL;
5018 }
5019
5020 /* When you run into this, adjust the code below for the new flag */
5021 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5022
5023 switch (dev->ieee80211_ptr->iftype) {
5024 case NL80211_IFTYPE_AP:
5025 case NL80211_IFTYPE_AP_VLAN:
5026 case NL80211_IFTYPE_P2P_GO:
5027 /* ignore WME attributes if iface/sta is not capable */
5028 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5029 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5030 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5031
5032 /* TDLS peers cannot be added */
5033 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5034 info->attrs[NL80211_ATTR_PEER_AID])
5035 return -EINVAL;
5036 /* but don't bother the driver with it */
5037 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5038
5039 /* allow authenticated/associated only if driver handles it */
5040 if (!(rdev->wiphy.features &
5041 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5042 params.sta_flags_mask & auth_assoc)
5043 return -EINVAL;
5044
5045 /* Older userspace, or userspace wanting to be compatible with
5046 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5047 * and assoc flags in the mask, but assumes the station will be
5048 * added as associated anyway since this was the required driver
5049 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5050 * introduced.
5051 * In order to not bother drivers with this quirk in the API
5052 * set the flags in both the mask and set for new stations in
5053 * this case.
5054 */
5055 if (!(params.sta_flags_mask & auth_assoc)) {
5056 params.sta_flags_mask |= auth_assoc;
5057 params.sta_flags_set |= auth_assoc;
5058 }
5059
5060 /* must be last in here for error handling */
5061 params.vlan = get_vlan(info, rdev);
5062 if (IS_ERR(params.vlan))
5063 return PTR_ERR(params.vlan);
5064 break;
5065 case NL80211_IFTYPE_MESH_POINT:
5066 /* ignore uAPSD data */
5067 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5068
5069 /* associated is disallowed */
5070 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5071 return -EINVAL;
5072 /* TDLS peers cannot be added */
5073 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5074 info->attrs[NL80211_ATTR_PEER_AID])
5075 return -EINVAL;
5076 break;
5077 case NL80211_IFTYPE_STATION:
5078 case NL80211_IFTYPE_P2P_CLIENT:
5079 /* ignore uAPSD data */
5080 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5081
5082 /* these are disallowed */
5083 if (params.sta_flags_mask &
5084 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5085 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5086 return -EINVAL;
5087 /* Only TDLS peers can be added */
5088 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5089 return -EINVAL;
5090 /* Can only add if TDLS ... */
5091 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5092 return -EOPNOTSUPP;
5093 /* ... with external setup is supported */
5094 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5095 return -EOPNOTSUPP;
5096 /*
5097 * Older wpa_supplicant versions always mark the TDLS peer
5098 * as authorized, but it shouldn't yet be.
5099 */
5100 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5101 break;
5102 default:
5103 return -EOPNOTSUPP;
5104 }
5105
5106 /* be aware of params.vlan when changing code here */
5107
5108 err = rdev_add_station(rdev, dev, mac_addr, &params);
5109
5110 if (params.vlan)
5111 dev_put(params.vlan);
5112 return err;
5113 }
5114
5115 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5116 {
5117 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5118 struct net_device *dev = info->user_ptr[1];
5119 struct station_del_parameters params;
5120
5121 memset(&params, 0, sizeof(params));
5122
5123 if (info->attrs[NL80211_ATTR_MAC])
5124 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5125
5126 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5127 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5128 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5129 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5130 return -EINVAL;
5131
5132 if (!rdev->ops->del_station)
5133 return -EOPNOTSUPP;
5134
5135 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5136 params.subtype =
5137 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5138 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5139 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5140 return -EINVAL;
5141 } else {
5142 /* Default to Deauthentication frame */
5143 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5144 }
5145
5146 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5147 params.reason_code =
5148 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5149 if (params.reason_code == 0)
5150 return -EINVAL; /* 0 is reserved */
5151 } else {
5152 /* Default to reason code 2 */
5153 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5154 }
5155
5156 return rdev_del_station(rdev, dev, &params);
5157 }
5158
5159 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5160 int flags, struct net_device *dev,
5161 u8 *dst, u8 *next_hop,
5162 struct mpath_info *pinfo)
5163 {
5164 void *hdr;
5165 struct nlattr *pinfoattr;
5166
5167 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5168 if (!hdr)
5169 return -1;
5170
5171 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5172 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5173 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5174 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5175 goto nla_put_failure;
5176
5177 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5178 if (!pinfoattr)
5179 goto nla_put_failure;
5180 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5181 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5182 pinfo->frame_qlen))
5183 goto nla_put_failure;
5184 if (((pinfo->filled & MPATH_INFO_SN) &&
5185 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5186 ((pinfo->filled & MPATH_INFO_METRIC) &&
5187 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5188 pinfo->metric)) ||
5189 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5190 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5191 pinfo->exptime)) ||
5192 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5193 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5194 pinfo->flags)) ||
5195 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5196 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5197 pinfo->discovery_timeout)) ||
5198 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5199 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5200 pinfo->discovery_retries)))
5201 goto nla_put_failure;
5202
5203 nla_nest_end(msg, pinfoattr);
5204
5205 genlmsg_end(msg, hdr);
5206 return 0;
5207
5208 nla_put_failure:
5209 genlmsg_cancel(msg, hdr);
5210 return -EMSGSIZE;
5211 }
5212
5213 static int nl80211_dump_mpath(struct sk_buff *skb,
5214 struct netlink_callback *cb)
5215 {
5216 struct mpath_info pinfo;
5217 struct cfg80211_registered_device *rdev;
5218 struct wireless_dev *wdev;
5219 u8 dst[ETH_ALEN];
5220 u8 next_hop[ETH_ALEN];
5221 int path_idx = cb->args[2];
5222 int err;
5223
5224 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5225 if (err)
5226 return err;
5227
5228 if (!rdev->ops->dump_mpath) {
5229 err = -EOPNOTSUPP;
5230 goto out_err;
5231 }
5232
5233 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5234 err = -EOPNOTSUPP;
5235 goto out_err;
5236 }
5237
5238 while (1) {
5239 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5240 next_hop, &pinfo);
5241 if (err == -ENOENT)
5242 break;
5243 if (err)
5244 goto out_err;
5245
5246 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5247 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5248 wdev->netdev, dst, next_hop,
5249 &pinfo) < 0)
5250 goto out;
5251
5252 path_idx++;
5253 }
5254
5255 out:
5256 cb->args[2] = path_idx;
5257 err = skb->len;
5258 out_err:
5259 nl80211_finish_wdev_dump(rdev);
5260 return err;
5261 }
5262
5263 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5264 {
5265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5266 int err;
5267 struct net_device *dev = info->user_ptr[1];
5268 struct mpath_info pinfo;
5269 struct sk_buff *msg;
5270 u8 *dst = NULL;
5271 u8 next_hop[ETH_ALEN];
5272
5273 memset(&pinfo, 0, sizeof(pinfo));
5274
5275 if (!info->attrs[NL80211_ATTR_MAC])
5276 return -EINVAL;
5277
5278 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5279
5280 if (!rdev->ops->get_mpath)
5281 return -EOPNOTSUPP;
5282
5283 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5284 return -EOPNOTSUPP;
5285
5286 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5287 if (err)
5288 return err;
5289
5290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5291 if (!msg)
5292 return -ENOMEM;
5293
5294 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5295 dev, dst, next_hop, &pinfo) < 0) {
5296 nlmsg_free(msg);
5297 return -ENOBUFS;
5298 }
5299
5300 return genlmsg_reply(msg, info);
5301 }
5302
5303 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5304 {
5305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5306 struct net_device *dev = info->user_ptr[1];
5307 u8 *dst = NULL;
5308 u8 *next_hop = NULL;
5309
5310 if (!info->attrs[NL80211_ATTR_MAC])
5311 return -EINVAL;
5312
5313 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5314 return -EINVAL;
5315
5316 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5317 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5318
5319 if (!rdev->ops->change_mpath)
5320 return -EOPNOTSUPP;
5321
5322 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5323 return -EOPNOTSUPP;
5324
5325 return rdev_change_mpath(rdev, dev, dst, next_hop);
5326 }
5327
5328 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5329 {
5330 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5331 struct net_device *dev = info->user_ptr[1];
5332 u8 *dst = NULL;
5333 u8 *next_hop = NULL;
5334
5335 if (!info->attrs[NL80211_ATTR_MAC])
5336 return -EINVAL;
5337
5338 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5339 return -EINVAL;
5340
5341 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5342 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5343
5344 if (!rdev->ops->add_mpath)
5345 return -EOPNOTSUPP;
5346
5347 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5348 return -EOPNOTSUPP;
5349
5350 return rdev_add_mpath(rdev, dev, dst, next_hop);
5351 }
5352
5353 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5354 {
5355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5356 struct net_device *dev = info->user_ptr[1];
5357 u8 *dst = NULL;
5358
5359 if (info->attrs[NL80211_ATTR_MAC])
5360 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5361
5362 if (!rdev->ops->del_mpath)
5363 return -EOPNOTSUPP;
5364
5365 return rdev_del_mpath(rdev, dev, dst);
5366 }
5367
5368 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5369 {
5370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5371 int err;
5372 struct net_device *dev = info->user_ptr[1];
5373 struct mpath_info pinfo;
5374 struct sk_buff *msg;
5375 u8 *dst = NULL;
5376 u8 mpp[ETH_ALEN];
5377
5378 memset(&pinfo, 0, sizeof(pinfo));
5379
5380 if (!info->attrs[NL80211_ATTR_MAC])
5381 return -EINVAL;
5382
5383 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5384
5385 if (!rdev->ops->get_mpp)
5386 return -EOPNOTSUPP;
5387
5388 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5389 return -EOPNOTSUPP;
5390
5391 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5392 if (err)
5393 return err;
5394
5395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5396 if (!msg)
5397 return -ENOMEM;
5398
5399 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5400 dev, dst, mpp, &pinfo) < 0) {
5401 nlmsg_free(msg);
5402 return -ENOBUFS;
5403 }
5404
5405 return genlmsg_reply(msg, info);
5406 }
5407
5408 static int nl80211_dump_mpp(struct sk_buff *skb,
5409 struct netlink_callback *cb)
5410 {
5411 struct mpath_info pinfo;
5412 struct cfg80211_registered_device *rdev;
5413 struct wireless_dev *wdev;
5414 u8 dst[ETH_ALEN];
5415 u8 mpp[ETH_ALEN];
5416 int path_idx = cb->args[2];
5417 int err;
5418
5419 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5420 if (err)
5421 return err;
5422
5423 if (!rdev->ops->dump_mpp) {
5424 err = -EOPNOTSUPP;
5425 goto out_err;
5426 }
5427
5428 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5429 err = -EOPNOTSUPP;
5430 goto out_err;
5431 }
5432
5433 while (1) {
5434 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5435 mpp, &pinfo);
5436 if (err == -ENOENT)
5437 break;
5438 if (err)
5439 goto out_err;
5440
5441 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5442 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5443 wdev->netdev, dst, mpp,
5444 &pinfo) < 0)
5445 goto out;
5446
5447 path_idx++;
5448 }
5449
5450 out:
5451 cb->args[2] = path_idx;
5452 err = skb->len;
5453 out_err:
5454 nl80211_finish_wdev_dump(rdev);
5455 return err;
5456 }
5457
5458 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5459 {
5460 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5461 struct net_device *dev = info->user_ptr[1];
5462 struct wireless_dev *wdev = dev->ieee80211_ptr;
5463 struct bss_parameters params;
5464 int err;
5465
5466 memset(&params, 0, sizeof(params));
5467 /* default to not changing parameters */
5468 params.use_cts_prot = -1;
5469 params.use_short_preamble = -1;
5470 params.use_short_slot_time = -1;
5471 params.ap_isolate = -1;
5472 params.ht_opmode = -1;
5473 params.p2p_ctwindow = -1;
5474 params.p2p_opp_ps = -1;
5475
5476 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5477 params.use_cts_prot =
5478 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5479 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5480 params.use_short_preamble =
5481 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5482 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5483 params.use_short_slot_time =
5484 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5485 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5486 params.basic_rates =
5487 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5488 params.basic_rates_len =
5489 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5490 }
5491 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5492 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5493 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5494 params.ht_opmode =
5495 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5496
5497 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5498 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5499 return -EINVAL;
5500 params.p2p_ctwindow =
5501 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5502 if (params.p2p_ctwindow < 0)
5503 return -EINVAL;
5504 if (params.p2p_ctwindow != 0 &&
5505 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5506 return -EINVAL;
5507 }
5508
5509 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5510 u8 tmp;
5511
5512 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5513 return -EINVAL;
5514 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5515 if (tmp > 1)
5516 return -EINVAL;
5517 params.p2p_opp_ps = tmp;
5518 if (params.p2p_opp_ps &&
5519 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5520 return -EINVAL;
5521 }
5522
5523 if (!rdev->ops->change_bss)
5524 return -EOPNOTSUPP;
5525
5526 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5527 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5528 return -EOPNOTSUPP;
5529
5530 wdev_lock(wdev);
5531 err = rdev_change_bss(rdev, dev, &params);
5532 wdev_unlock(wdev);
5533
5534 return err;
5535 }
5536
5537 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5538 {
5539 char *data = NULL;
5540 bool is_indoor;
5541 enum nl80211_user_reg_hint_type user_reg_hint_type;
5542 u32 owner_nlportid;
5543
5544 /*
5545 * You should only get this when cfg80211 hasn't yet initialized
5546 * completely when built-in to the kernel right between the time
5547 * window between nl80211_init() and regulatory_init(), if that is
5548 * even possible.
5549 */
5550 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5551 return -EINPROGRESS;
5552
5553 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5554 user_reg_hint_type =
5555 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5556 else
5557 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5558
5559 switch (user_reg_hint_type) {
5560 case NL80211_USER_REG_HINT_USER:
5561 case NL80211_USER_REG_HINT_CELL_BASE:
5562 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5563 return -EINVAL;
5564
5565 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5566 return regulatory_hint_user(data, user_reg_hint_type);
5567 case NL80211_USER_REG_HINT_INDOOR:
5568 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5569 owner_nlportid = info->snd_portid;
5570 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5571 } else {
5572 owner_nlportid = 0;
5573 is_indoor = true;
5574 }
5575
5576 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5577 default:
5578 return -EINVAL;
5579 }
5580 }
5581
5582 static int nl80211_get_mesh_config(struct sk_buff *skb,
5583 struct genl_info *info)
5584 {
5585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5586 struct net_device *dev = info->user_ptr[1];
5587 struct wireless_dev *wdev = dev->ieee80211_ptr;
5588 struct mesh_config cur_params;
5589 int err = 0;
5590 void *hdr;
5591 struct nlattr *pinfoattr;
5592 struct sk_buff *msg;
5593
5594 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5595 return -EOPNOTSUPP;
5596
5597 if (!rdev->ops->get_mesh_config)
5598 return -EOPNOTSUPP;
5599
5600 wdev_lock(wdev);
5601 /* If not connected, get default parameters */
5602 if (!wdev->mesh_id_len)
5603 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5604 else
5605 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5606 wdev_unlock(wdev);
5607
5608 if (err)
5609 return err;
5610
5611 /* Draw up a netlink message to send back */
5612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5613 if (!msg)
5614 return -ENOMEM;
5615 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5616 NL80211_CMD_GET_MESH_CONFIG);
5617 if (!hdr)
5618 goto out;
5619 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5620 if (!pinfoattr)
5621 goto nla_put_failure;
5622 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5623 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5624 cur_params.dot11MeshRetryTimeout) ||
5625 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5626 cur_params.dot11MeshConfirmTimeout) ||
5627 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5628 cur_params.dot11MeshHoldingTimeout) ||
5629 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5630 cur_params.dot11MeshMaxPeerLinks) ||
5631 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5632 cur_params.dot11MeshMaxRetries) ||
5633 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5634 cur_params.dot11MeshTTL) ||
5635 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5636 cur_params.element_ttl) ||
5637 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5638 cur_params.auto_open_plinks) ||
5639 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5640 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5641 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5642 cur_params.dot11MeshHWMPmaxPREQretries) ||
5643 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5644 cur_params.path_refresh_time) ||
5645 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5646 cur_params.min_discovery_timeout) ||
5647 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5648 cur_params.dot11MeshHWMPactivePathTimeout) ||
5649 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5650 cur_params.dot11MeshHWMPpreqMinInterval) ||
5651 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5652 cur_params.dot11MeshHWMPperrMinInterval) ||
5653 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5654 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5655 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5656 cur_params.dot11MeshHWMPRootMode) ||
5657 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5658 cur_params.dot11MeshHWMPRannInterval) ||
5659 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5660 cur_params.dot11MeshGateAnnouncementProtocol) ||
5661 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5662 cur_params.dot11MeshForwarding) ||
5663 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5664 cur_params.rssi_threshold) ||
5665 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5666 cur_params.ht_opmode) ||
5667 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5668 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5669 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5670 cur_params.dot11MeshHWMProotInterval) ||
5671 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5672 cur_params.dot11MeshHWMPconfirmationInterval) ||
5673 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5674 cur_params.power_mode) ||
5675 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5676 cur_params.dot11MeshAwakeWindowDuration) ||
5677 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5678 cur_params.plink_timeout))
5679 goto nla_put_failure;
5680 nla_nest_end(msg, pinfoattr);
5681 genlmsg_end(msg, hdr);
5682 return genlmsg_reply(msg, info);
5683
5684 nla_put_failure:
5685 genlmsg_cancel(msg, hdr);
5686 out:
5687 nlmsg_free(msg);
5688 return -ENOBUFS;
5689 }
5690
5691 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5692 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5693 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5694 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5695 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5696 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5697 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5698 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5699 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5700 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5701 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5702 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5703 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5704 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5705 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5706 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5707 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5708 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5709 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5710 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5711 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5712 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5713 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5714 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5715 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5716 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5717 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5718 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5719 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5720 };
5721
5722 static const struct nla_policy
5723 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5724 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5725 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5726 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5727 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5728 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5729 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5730 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5731 .len = IEEE80211_MAX_DATA_LEN },
5732 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5733 };
5734
5735 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5736 {
5737 u8 val = nla_get_u8(nla);
5738 if (val < min || val > max)
5739 return -EINVAL;
5740 *out = val;
5741 return 0;
5742 }
5743
5744 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5745 {
5746 u8 val = nla_get_u8(nla);
5747 if (val < min || val > max)
5748 return -EINVAL;
5749 *out = val;
5750 return 0;
5751 }
5752
5753 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5754 {
5755 u16 val = nla_get_u16(nla);
5756 if (val < min || val > max)
5757 return -EINVAL;
5758 *out = val;
5759 return 0;
5760 }
5761
5762 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5763 {
5764 u32 val = nla_get_u32(nla);
5765 if (val < min || val > max)
5766 return -EINVAL;
5767 *out = val;
5768 return 0;
5769 }
5770
5771 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5772 {
5773 s32 val = nla_get_s32(nla);
5774 if (val < min || val > max)
5775 return -EINVAL;
5776 *out = val;
5777 return 0;
5778 }
5779
5780 static int nl80211_check_power_mode(const struct nlattr *nla,
5781 enum nl80211_mesh_power_mode min,
5782 enum nl80211_mesh_power_mode max,
5783 enum nl80211_mesh_power_mode *out)
5784 {
5785 u32 val = nla_get_u32(nla);
5786 if (val < min || val > max)
5787 return -EINVAL;
5788 *out = val;
5789 return 0;
5790 }
5791
5792 static int nl80211_parse_mesh_config(struct genl_info *info,
5793 struct mesh_config *cfg,
5794 u32 *mask_out)
5795 {
5796 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5797 u32 mask = 0;
5798 u16 ht_opmode;
5799
5800 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5801 do { \
5802 if (tb[attr]) { \
5803 if (fn(tb[attr], min, max, &cfg->param)) \
5804 return -EINVAL; \
5805 mask |= (1 << (attr - 1)); \
5806 } \
5807 } while (0)
5808
5809 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5810 return -EINVAL;
5811 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5812 info->attrs[NL80211_ATTR_MESH_CONFIG],
5813 nl80211_meshconf_params_policy))
5814 return -EINVAL;
5815
5816 /* This makes sure that there aren't more than 32 mesh config
5817 * parameters (otherwise our bitfield scheme would not work.) */
5818 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5819
5820 /* Fill in the params struct */
5821 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5822 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5823 nl80211_check_u16);
5824 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5825 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5826 nl80211_check_u16);
5827 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5828 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5829 nl80211_check_u16);
5830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5831 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5832 nl80211_check_u16);
5833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5834 mask, NL80211_MESHCONF_MAX_RETRIES,
5835 nl80211_check_u8);
5836 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5837 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5838 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5839 mask, NL80211_MESHCONF_ELEMENT_TTL,
5840 nl80211_check_u8);
5841 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5842 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5843 nl80211_check_bool);
5844 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5845 1, 255, mask,
5846 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5847 nl80211_check_u32);
5848 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5849 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5850 nl80211_check_u8);
5851 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5852 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5853 nl80211_check_u32);
5854 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5855 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5856 nl80211_check_u16);
5857 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5858 1, 65535, mask,
5859 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5860 nl80211_check_u32);
5861 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5862 1, 65535, mask,
5863 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5864 nl80211_check_u16);
5865 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5866 1, 65535, mask,
5867 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5868 nl80211_check_u16);
5869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5870 dot11MeshHWMPnetDiameterTraversalTime,
5871 1, 65535, mask,
5872 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5873 nl80211_check_u16);
5874 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5875 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5876 nl80211_check_u8);
5877 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5878 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5879 nl80211_check_u16);
5880 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5881 dot11MeshGateAnnouncementProtocol, 0, 1,
5882 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5883 nl80211_check_bool);
5884 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5885 mask, NL80211_MESHCONF_FORWARDING,
5886 nl80211_check_bool);
5887 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5888 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5889 nl80211_check_s32);
5890 /*
5891 * Check HT operation mode based on
5892 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5893 */
5894 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5895 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5896
5897 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5898 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5899 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5900 return -EINVAL;
5901
5902 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5903 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5904 return -EINVAL;
5905
5906 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5907 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5908 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5909 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5910 return -EINVAL;
5911 break;
5912 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5913 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5914 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5915 return -EINVAL;
5916 break;
5917 }
5918 cfg->ht_opmode = ht_opmode;
5919 }
5920 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5921 1, 65535, mask,
5922 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5923 nl80211_check_u32);
5924 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5925 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5926 nl80211_check_u16);
5927 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5928 dot11MeshHWMPconfirmationInterval,
5929 1, 65535, mask,
5930 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5931 nl80211_check_u16);
5932 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5933 NL80211_MESH_POWER_ACTIVE,
5934 NL80211_MESH_POWER_MAX,
5935 mask, NL80211_MESHCONF_POWER_MODE,
5936 nl80211_check_power_mode);
5937 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5938 0, 65535, mask,
5939 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5940 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5941 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5942 nl80211_check_u32);
5943 if (mask_out)
5944 *mask_out = mask;
5945
5946 return 0;
5947
5948 #undef FILL_IN_MESH_PARAM_IF_SET
5949 }
5950
5951 static int nl80211_parse_mesh_setup(struct genl_info *info,
5952 struct mesh_setup *setup)
5953 {
5954 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5955 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5956
5957 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5958 return -EINVAL;
5959 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5960 info->attrs[NL80211_ATTR_MESH_SETUP],
5961 nl80211_mesh_setup_params_policy))
5962 return -EINVAL;
5963
5964 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5965 setup->sync_method =
5966 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5967 IEEE80211_SYNC_METHOD_VENDOR :
5968 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5969
5970 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5971 setup->path_sel_proto =
5972 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5973 IEEE80211_PATH_PROTOCOL_VENDOR :
5974 IEEE80211_PATH_PROTOCOL_HWMP;
5975
5976 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5977 setup->path_metric =
5978 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5979 IEEE80211_PATH_METRIC_VENDOR :
5980 IEEE80211_PATH_METRIC_AIRTIME;
5981
5982 if (tb[NL80211_MESH_SETUP_IE]) {
5983 struct nlattr *ieattr =
5984 tb[NL80211_MESH_SETUP_IE];
5985 if (!is_valid_ie_attr(ieattr))
5986 return -EINVAL;
5987 setup->ie = nla_data(ieattr);
5988 setup->ie_len = nla_len(ieattr);
5989 }
5990 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5991 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5992 return -EINVAL;
5993 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5994 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5995 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5996 if (setup->is_secure)
5997 setup->user_mpm = true;
5998
5999 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6000 if (!setup->user_mpm)
6001 return -EINVAL;
6002 setup->auth_id =
6003 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6004 }
6005
6006 return 0;
6007 }
6008
6009 static int nl80211_update_mesh_config(struct sk_buff *skb,
6010 struct genl_info *info)
6011 {
6012 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6013 struct net_device *dev = info->user_ptr[1];
6014 struct wireless_dev *wdev = dev->ieee80211_ptr;
6015 struct mesh_config cfg;
6016 u32 mask;
6017 int err;
6018
6019 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6020 return -EOPNOTSUPP;
6021
6022 if (!rdev->ops->update_mesh_config)
6023 return -EOPNOTSUPP;
6024
6025 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6026 if (err)
6027 return err;
6028
6029 wdev_lock(wdev);
6030 if (!wdev->mesh_id_len)
6031 err = -ENOLINK;
6032
6033 if (!err)
6034 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6035
6036 wdev_unlock(wdev);
6037
6038 return err;
6039 }
6040
6041 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6042 struct sk_buff *msg)
6043 {
6044 struct nlattr *nl_reg_rules;
6045 unsigned int i;
6046
6047 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6048 (regdom->dfs_region &&
6049 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6050 goto nla_put_failure;
6051
6052 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6053 if (!nl_reg_rules)
6054 goto nla_put_failure;
6055
6056 for (i = 0; i < regdom->n_reg_rules; i++) {
6057 struct nlattr *nl_reg_rule;
6058 const struct ieee80211_reg_rule *reg_rule;
6059 const struct ieee80211_freq_range *freq_range;
6060 const struct ieee80211_power_rule *power_rule;
6061 unsigned int max_bandwidth_khz;
6062
6063 reg_rule = &regdom->reg_rules[i];
6064 freq_range = &reg_rule->freq_range;
6065 power_rule = &reg_rule->power_rule;
6066
6067 nl_reg_rule = nla_nest_start(msg, i);
6068 if (!nl_reg_rule)
6069 goto nla_put_failure;
6070
6071 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6072 if (!max_bandwidth_khz)
6073 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6074 reg_rule);
6075
6076 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6077 reg_rule->flags) ||
6078 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6079 freq_range->start_freq_khz) ||
6080 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6081 freq_range->end_freq_khz) ||
6082 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6083 max_bandwidth_khz) ||
6084 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6085 power_rule->max_antenna_gain) ||
6086 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6087 power_rule->max_eirp) ||
6088 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6089 reg_rule->dfs_cac_ms))
6090 goto nla_put_failure;
6091
6092 nla_nest_end(msg, nl_reg_rule);
6093 }
6094
6095 nla_nest_end(msg, nl_reg_rules);
6096 return 0;
6097
6098 nla_put_failure:
6099 return -EMSGSIZE;
6100 }
6101
6102 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6103 {
6104 const struct ieee80211_regdomain *regdom = NULL;
6105 struct cfg80211_registered_device *rdev;
6106 struct wiphy *wiphy = NULL;
6107 struct sk_buff *msg;
6108 void *hdr;
6109
6110 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6111 if (!msg)
6112 return -ENOBUFS;
6113
6114 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6115 NL80211_CMD_GET_REG);
6116 if (!hdr)
6117 goto put_failure;
6118
6119 if (info->attrs[NL80211_ATTR_WIPHY]) {
6120 bool self_managed;
6121
6122 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6123 if (IS_ERR(rdev)) {
6124 nlmsg_free(msg);
6125 return PTR_ERR(rdev);
6126 }
6127
6128 wiphy = &rdev->wiphy;
6129 self_managed = wiphy->regulatory_flags &
6130 REGULATORY_WIPHY_SELF_MANAGED;
6131 regdom = get_wiphy_regdom(wiphy);
6132
6133 /* a self-managed-reg device must have a private regdom */
6134 if (WARN_ON(!regdom && self_managed)) {
6135 nlmsg_free(msg);
6136 return -EINVAL;
6137 }
6138
6139 if (regdom &&
6140 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6141 goto nla_put_failure;
6142 }
6143
6144 if (!wiphy && reg_last_request_cell_base() &&
6145 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6146 NL80211_USER_REG_HINT_CELL_BASE))
6147 goto nla_put_failure;
6148
6149 rcu_read_lock();
6150
6151 if (!regdom)
6152 regdom = rcu_dereference(cfg80211_regdomain);
6153
6154 if (nl80211_put_regdom(regdom, msg))
6155 goto nla_put_failure_rcu;
6156
6157 rcu_read_unlock();
6158
6159 genlmsg_end(msg, hdr);
6160 return genlmsg_reply(msg, info);
6161
6162 nla_put_failure_rcu:
6163 rcu_read_unlock();
6164 nla_put_failure:
6165 genlmsg_cancel(msg, hdr);
6166 put_failure:
6167 nlmsg_free(msg);
6168 return -EMSGSIZE;
6169 }
6170
6171 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6172 u32 seq, int flags, struct wiphy *wiphy,
6173 const struct ieee80211_regdomain *regdom)
6174 {
6175 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6176 NL80211_CMD_GET_REG);
6177
6178 if (!hdr)
6179 return -1;
6180
6181 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6182
6183 if (nl80211_put_regdom(regdom, msg))
6184 goto nla_put_failure;
6185
6186 if (!wiphy && reg_last_request_cell_base() &&
6187 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6188 NL80211_USER_REG_HINT_CELL_BASE))
6189 goto nla_put_failure;
6190
6191 if (wiphy &&
6192 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6193 goto nla_put_failure;
6194
6195 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6196 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6197 goto nla_put_failure;
6198
6199 genlmsg_end(msg, hdr);
6200 return 0;
6201
6202 nla_put_failure:
6203 genlmsg_cancel(msg, hdr);
6204 return -EMSGSIZE;
6205 }
6206
6207 static int nl80211_get_reg_dump(struct sk_buff *skb,
6208 struct netlink_callback *cb)
6209 {
6210 const struct ieee80211_regdomain *regdom = NULL;
6211 struct cfg80211_registered_device *rdev;
6212 int err, reg_idx, start = cb->args[2];
6213
6214 rtnl_lock();
6215
6216 if (cfg80211_regdomain && start == 0) {
6217 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6218 NLM_F_MULTI, NULL,
6219 rtnl_dereference(cfg80211_regdomain));
6220 if (err < 0)
6221 goto out_err;
6222 }
6223
6224 /* the global regdom is idx 0 */
6225 reg_idx = 1;
6226 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6227 regdom = get_wiphy_regdom(&rdev->wiphy);
6228 if (!regdom)
6229 continue;
6230
6231 if (++reg_idx <= start)
6232 continue;
6233
6234 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6235 NLM_F_MULTI, &rdev->wiphy, regdom);
6236 if (err < 0) {
6237 reg_idx--;
6238 break;
6239 }
6240 }
6241
6242 cb->args[2] = reg_idx;
6243 err = skb->len;
6244 out_err:
6245 rtnl_unlock();
6246 return err;
6247 }
6248
6249 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6250 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6251 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6252 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6253 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6254 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6255 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6256 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6257 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6258 };
6259
6260 static int parse_reg_rule(struct nlattr *tb[],
6261 struct ieee80211_reg_rule *reg_rule)
6262 {
6263 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6264 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6265
6266 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6267 return -EINVAL;
6268 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6269 return -EINVAL;
6270 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6271 return -EINVAL;
6272 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6273 return -EINVAL;
6274 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6275 return -EINVAL;
6276
6277 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6278
6279 freq_range->start_freq_khz =
6280 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6281 freq_range->end_freq_khz =
6282 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6283 freq_range->max_bandwidth_khz =
6284 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6285
6286 power_rule->max_eirp =
6287 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6288
6289 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6290 power_rule->max_antenna_gain =
6291 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6292
6293 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6294 reg_rule->dfs_cac_ms =
6295 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6296
6297 return 0;
6298 }
6299
6300 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6301 {
6302 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6303 struct nlattr *nl_reg_rule;
6304 char *alpha2;
6305 int rem_reg_rules, r;
6306 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6307 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6308 struct ieee80211_regdomain *rd;
6309
6310 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6311 return -EINVAL;
6312
6313 if (!info->attrs[NL80211_ATTR_REG_RULES])
6314 return -EINVAL;
6315
6316 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6317
6318 if (info->attrs[NL80211_ATTR_DFS_REGION])
6319 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6320
6321 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6322 rem_reg_rules) {
6323 num_rules++;
6324 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6325 return -EINVAL;
6326 }
6327
6328 if (!reg_is_valid_request(alpha2))
6329 return -EINVAL;
6330
6331 size_of_regd = sizeof(struct ieee80211_regdomain) +
6332 num_rules * sizeof(struct ieee80211_reg_rule);
6333
6334 rd = kzalloc(size_of_regd, GFP_KERNEL);
6335 if (!rd)
6336 return -ENOMEM;
6337
6338 rd->n_reg_rules = num_rules;
6339 rd->alpha2[0] = alpha2[0];
6340 rd->alpha2[1] = alpha2[1];
6341
6342 /*
6343 * Disable DFS master mode if the DFS region was
6344 * not supported or known on this kernel.
6345 */
6346 if (reg_supported_dfs_region(dfs_region))
6347 rd->dfs_region = dfs_region;
6348
6349 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6350 rem_reg_rules) {
6351 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6352 nl_reg_rule, reg_rule_policy);
6353 if (r)
6354 goto bad_reg;
6355 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6356 if (r)
6357 goto bad_reg;
6358
6359 rule_idx++;
6360
6361 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6362 r = -EINVAL;
6363 goto bad_reg;
6364 }
6365 }
6366
6367 /* set_regdom takes ownership of rd */
6368 return set_regdom(rd, REGD_SOURCE_CRDA);
6369 bad_reg:
6370 kfree(rd);
6371 return r;
6372 }
6373 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6374
6375 static int validate_scan_freqs(struct nlattr *freqs)
6376 {
6377 struct nlattr *attr1, *attr2;
6378 int n_channels = 0, tmp1, tmp2;
6379
6380 nla_for_each_nested(attr1, freqs, tmp1) {
6381 n_channels++;
6382 /*
6383 * Some hardware has a limited channel list for
6384 * scanning, and it is pretty much nonsensical
6385 * to scan for a channel twice, so disallow that
6386 * and don't require drivers to check that the
6387 * channel list they get isn't longer than what
6388 * they can scan, as long as they can scan all
6389 * the channels they registered at once.
6390 */
6391 nla_for_each_nested(attr2, freqs, tmp2)
6392 if (attr1 != attr2 &&
6393 nla_get_u32(attr1) == nla_get_u32(attr2))
6394 return 0;
6395 }
6396
6397 return n_channels;
6398 }
6399
6400 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6401 {
6402 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6403 }
6404
6405 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6406 struct cfg80211_bss_selection *bss_select)
6407 {
6408 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6409 struct nlattr *nest;
6410 int err;
6411 bool found = false;
6412 int i;
6413
6414 /* only process one nested attribute */
6415 nest = nla_data(nla);
6416 if (!nla_ok(nest, nla_len(nest)))
6417 return -EINVAL;
6418
6419 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6420 nl80211_bss_select_policy);
6421 if (err)
6422 return err;
6423
6424 /* only one attribute may be given */
6425 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6426 if (attr[i]) {
6427 if (found)
6428 return -EINVAL;
6429 found = true;
6430 }
6431 }
6432
6433 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6434
6435 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6436 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6437
6438 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6439 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6440 bss_select->param.band_pref =
6441 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6442 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6443 return -EINVAL;
6444 }
6445
6446 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6447 struct nl80211_bss_select_rssi_adjust *adj_param;
6448
6449 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6450 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6451 bss_select->param.adjust.band = adj_param->band;
6452 bss_select->param.adjust.delta = adj_param->delta;
6453 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6454 return -EINVAL;
6455 }
6456
6457 /* user-space did not provide behaviour attribute */
6458 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6459 return -EINVAL;
6460
6461 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6462 return -EINVAL;
6463
6464 return 0;
6465 }
6466
6467 static int nl80211_parse_random_mac(struct nlattr **attrs,
6468 u8 *mac_addr, u8 *mac_addr_mask)
6469 {
6470 int i;
6471
6472 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6473 eth_zero_addr(mac_addr);
6474 eth_zero_addr(mac_addr_mask);
6475 mac_addr[0] = 0x2;
6476 mac_addr_mask[0] = 0x3;
6477
6478 return 0;
6479 }
6480
6481 /* need both or none */
6482 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6483 return -EINVAL;
6484
6485 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6486 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6487
6488 /* don't allow or configure an mcast address */
6489 if (!is_multicast_ether_addr(mac_addr_mask) ||
6490 is_multicast_ether_addr(mac_addr))
6491 return -EINVAL;
6492
6493 /*
6494 * allow users to pass a MAC address that has bits set outside
6495 * of the mask, but don't bother drivers with having to deal
6496 * with such bits
6497 */
6498 for (i = 0; i < ETH_ALEN; i++)
6499 mac_addr[i] &= mac_addr_mask[i];
6500
6501 return 0;
6502 }
6503
6504 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6505 {
6506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6507 struct wireless_dev *wdev = info->user_ptr[1];
6508 struct cfg80211_scan_request *request;
6509 struct nlattr *attr;
6510 struct wiphy *wiphy;
6511 int err, tmp, n_ssids = 0, n_channels, i;
6512 size_t ie_len;
6513
6514 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6515 return -EINVAL;
6516
6517 wiphy = &rdev->wiphy;
6518
6519 if (wdev->iftype == NL80211_IFTYPE_NAN)
6520 return -EOPNOTSUPP;
6521
6522 if (!rdev->ops->scan)
6523 return -EOPNOTSUPP;
6524
6525 if (rdev->scan_req || rdev->scan_msg) {
6526 err = -EBUSY;
6527 goto unlock;
6528 }
6529
6530 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6531 n_channels = validate_scan_freqs(
6532 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6533 if (!n_channels) {
6534 err = -EINVAL;
6535 goto unlock;
6536 }
6537 } else {
6538 n_channels = ieee80211_get_num_supported_channels(wiphy);
6539 }
6540
6541 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6542 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6543 n_ssids++;
6544
6545 if (n_ssids > wiphy->max_scan_ssids) {
6546 err = -EINVAL;
6547 goto unlock;
6548 }
6549
6550 if (info->attrs[NL80211_ATTR_IE])
6551 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6552 else
6553 ie_len = 0;
6554
6555 if (ie_len > wiphy->max_scan_ie_len) {
6556 err = -EINVAL;
6557 goto unlock;
6558 }
6559
6560 request = kzalloc(sizeof(*request)
6561 + sizeof(*request->ssids) * n_ssids
6562 + sizeof(*request->channels) * n_channels
6563 + ie_len, GFP_KERNEL);
6564 if (!request) {
6565 err = -ENOMEM;
6566 goto unlock;
6567 }
6568
6569 if (n_ssids)
6570 request->ssids = (void *)&request->channels[n_channels];
6571 request->n_ssids = n_ssids;
6572 if (ie_len) {
6573 if (n_ssids)
6574 request->ie = (void *)(request->ssids + n_ssids);
6575 else
6576 request->ie = (void *)(request->channels + n_channels);
6577 }
6578
6579 i = 0;
6580 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6581 /* user specified, bail out if channel not found */
6582 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6583 struct ieee80211_channel *chan;
6584
6585 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6586
6587 if (!chan) {
6588 err = -EINVAL;
6589 goto out_free;
6590 }
6591
6592 /* ignore disabled channels */
6593 if (chan->flags & IEEE80211_CHAN_DISABLED)
6594 continue;
6595
6596 request->channels[i] = chan;
6597 i++;
6598 }
6599 } else {
6600 enum nl80211_band band;
6601
6602 /* all channels */
6603 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6604 int j;
6605
6606 if (!wiphy->bands[band])
6607 continue;
6608 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6609 struct ieee80211_channel *chan;
6610
6611 chan = &wiphy->bands[band]->channels[j];
6612
6613 if (chan->flags & IEEE80211_CHAN_DISABLED)
6614 continue;
6615
6616 request->channels[i] = chan;
6617 i++;
6618 }
6619 }
6620 }
6621
6622 if (!i) {
6623 err = -EINVAL;
6624 goto out_free;
6625 }
6626
6627 request->n_channels = i;
6628
6629 i = 0;
6630 if (n_ssids) {
6631 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6632 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6633 err = -EINVAL;
6634 goto out_free;
6635 }
6636 request->ssids[i].ssid_len = nla_len(attr);
6637 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6638 i++;
6639 }
6640 }
6641
6642 if (info->attrs[NL80211_ATTR_IE]) {
6643 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6644 memcpy((void *)request->ie,
6645 nla_data(info->attrs[NL80211_ATTR_IE]),
6646 request->ie_len);
6647 }
6648
6649 for (i = 0; i < NUM_NL80211_BANDS; i++)
6650 if (wiphy->bands[i])
6651 request->rates[i] =
6652 (1 << wiphy->bands[i]->n_bitrates) - 1;
6653
6654 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6655 nla_for_each_nested(attr,
6656 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6657 tmp) {
6658 enum nl80211_band band = nla_type(attr);
6659
6660 if (band < 0 || band >= NUM_NL80211_BANDS) {
6661 err = -EINVAL;
6662 goto out_free;
6663 }
6664
6665 if (!wiphy->bands[band])
6666 continue;
6667
6668 err = ieee80211_get_ratemask(wiphy->bands[band],
6669 nla_data(attr),
6670 nla_len(attr),
6671 &request->rates[band]);
6672 if (err)
6673 goto out_free;
6674 }
6675 }
6676
6677 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6678 if (!wiphy_ext_feature_isset(wiphy,
6679 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6680 err = -EOPNOTSUPP;
6681 goto out_free;
6682 }
6683
6684 request->duration =
6685 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6686 request->duration_mandatory =
6687 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6688 }
6689
6690 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6691 request->flags = nla_get_u32(
6692 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6693 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6694 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6695 err = -EOPNOTSUPP;
6696 goto out_free;
6697 }
6698
6699 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6700 if (!(wiphy->features &
6701 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6702 err = -EOPNOTSUPP;
6703 goto out_free;
6704 }
6705
6706 if (wdev->current_bss) {
6707 err = -EOPNOTSUPP;
6708 goto out_free;
6709 }
6710
6711 err = nl80211_parse_random_mac(info->attrs,
6712 request->mac_addr,
6713 request->mac_addr_mask);
6714 if (err)
6715 goto out_free;
6716 }
6717 }
6718
6719 request->no_cck =
6720 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6721
6722 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6723 * BSSID to scan for. This was problematic because that same attribute
6724 * was already used for another purpose (local random MAC address). The
6725 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6726 * compatibility with older userspace components, also use the
6727 * NL80211_ATTR_MAC value here if it can be determined to be used for
6728 * the specific BSSID use case instead of the random MAC address
6729 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6730 */
6731 if (info->attrs[NL80211_ATTR_BSSID])
6732 memcpy(request->bssid,
6733 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6734 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6735 info->attrs[NL80211_ATTR_MAC])
6736 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6737 ETH_ALEN);
6738 else
6739 eth_broadcast_addr(request->bssid);
6740
6741 request->wdev = wdev;
6742 request->wiphy = &rdev->wiphy;
6743 request->scan_start = jiffies;
6744
6745 rdev->scan_req = request;
6746 err = rdev_scan(rdev, request);
6747
6748 if (!err) {
6749 nl80211_send_scan_start(rdev, wdev);
6750 if (wdev->netdev)
6751 dev_hold(wdev->netdev);
6752 } else {
6753 out_free:
6754 rdev->scan_req = NULL;
6755 kfree(request);
6756 }
6757
6758 unlock:
6759 return err;
6760 }
6761
6762 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6763 {
6764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6765 struct wireless_dev *wdev = info->user_ptr[1];
6766
6767 if (!rdev->ops->abort_scan)
6768 return -EOPNOTSUPP;
6769
6770 if (rdev->scan_msg)
6771 return 0;
6772
6773 if (!rdev->scan_req)
6774 return -ENOENT;
6775
6776 rdev_abort_scan(rdev, wdev);
6777 return 0;
6778 }
6779
6780 static int
6781 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6782 struct cfg80211_sched_scan_request *request,
6783 struct nlattr **attrs)
6784 {
6785 int tmp, err, i = 0;
6786 struct nlattr *attr;
6787
6788 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6789 u32 interval;
6790
6791 /*
6792 * If scan plans are not specified,
6793 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6794 * case one scan plan will be set with the specified scan
6795 * interval and infinite number of iterations.
6796 */
6797 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6798 return -EINVAL;
6799
6800 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6801 if (!interval)
6802 return -EINVAL;
6803
6804 request->scan_plans[0].interval =
6805 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6806 if (!request->scan_plans[0].interval)
6807 return -EINVAL;
6808
6809 if (request->scan_plans[0].interval >
6810 wiphy->max_sched_scan_plan_interval)
6811 request->scan_plans[0].interval =
6812 wiphy->max_sched_scan_plan_interval;
6813
6814 return 0;
6815 }
6816
6817 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6818 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6819
6820 if (WARN_ON(i >= n_plans))
6821 return -EINVAL;
6822
6823 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6824 attr, nl80211_plan_policy);
6825 if (err)
6826 return err;
6827
6828 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6829 return -EINVAL;
6830
6831 request->scan_plans[i].interval =
6832 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6833 if (!request->scan_plans[i].interval ||
6834 request->scan_plans[i].interval >
6835 wiphy->max_sched_scan_plan_interval)
6836 return -EINVAL;
6837
6838 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6839 request->scan_plans[i].iterations =
6840 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6841 if (!request->scan_plans[i].iterations ||
6842 (request->scan_plans[i].iterations >
6843 wiphy->max_sched_scan_plan_iterations))
6844 return -EINVAL;
6845 } else if (i < n_plans - 1) {
6846 /*
6847 * All scan plans but the last one must specify
6848 * a finite number of iterations
6849 */
6850 return -EINVAL;
6851 }
6852
6853 i++;
6854 }
6855
6856 /*
6857 * The last scan plan must not specify the number of
6858 * iterations, it is supposed to run infinitely
6859 */
6860 if (request->scan_plans[n_plans - 1].iterations)
6861 return -EINVAL;
6862
6863 return 0;
6864 }
6865
6866 static struct cfg80211_sched_scan_request *
6867 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6868 struct nlattr **attrs)
6869 {
6870 struct cfg80211_sched_scan_request *request;
6871 struct nlattr *attr;
6872 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6873 enum nl80211_band band;
6874 size_t ie_len;
6875 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6876 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6877
6878 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6879 return ERR_PTR(-EINVAL);
6880
6881 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6882 n_channels = validate_scan_freqs(
6883 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6884 if (!n_channels)
6885 return ERR_PTR(-EINVAL);
6886 } else {
6887 n_channels = ieee80211_get_num_supported_channels(wiphy);
6888 }
6889
6890 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6891 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6892 tmp)
6893 n_ssids++;
6894
6895 if (n_ssids > wiphy->max_sched_scan_ssids)
6896 return ERR_PTR(-EINVAL);
6897
6898 /*
6899 * First, count the number of 'real' matchsets. Due to an issue with
6900 * the old implementation, matchsets containing only the RSSI attribute
6901 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6902 * RSSI for all matchsets, rather than their own matchset for reporting
6903 * all APs with a strong RSSI. This is needed to be compatible with
6904 * older userspace that treated a matchset with only the RSSI as the
6905 * global RSSI for all other matchsets - if there are other matchsets.
6906 */
6907 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6908 nla_for_each_nested(attr,
6909 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6910 tmp) {
6911 struct nlattr *rssi;
6912
6913 err = nla_parse_nested(tb,
6914 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6915 attr, nl80211_match_policy);
6916 if (err)
6917 return ERR_PTR(err);
6918 /* add other standalone attributes here */
6919 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6920 n_match_sets++;
6921 continue;
6922 }
6923 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6924 if (rssi)
6925 default_match_rssi = nla_get_s32(rssi);
6926 }
6927 }
6928
6929 /* However, if there's no other matchset, add the RSSI one */
6930 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6931 n_match_sets = 1;
6932
6933 if (n_match_sets > wiphy->max_match_sets)
6934 return ERR_PTR(-EINVAL);
6935
6936 if (attrs[NL80211_ATTR_IE])
6937 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6938 else
6939 ie_len = 0;
6940
6941 if (ie_len > wiphy->max_sched_scan_ie_len)
6942 return ERR_PTR(-EINVAL);
6943
6944 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6945 /*
6946 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6947 * each scan plan already specifies its own interval
6948 */
6949 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6950 return ERR_PTR(-EINVAL);
6951
6952 nla_for_each_nested(attr,
6953 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6954 n_plans++;
6955 } else {
6956 /*
6957 * The scan interval attribute is kept for backward
6958 * compatibility. If no scan plans are specified and sched scan
6959 * interval is specified, one scan plan will be set with this
6960 * scan interval and infinite number of iterations.
6961 */
6962 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6963 return ERR_PTR(-EINVAL);
6964
6965 n_plans = 1;
6966 }
6967
6968 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6969 return ERR_PTR(-EINVAL);
6970
6971 request = kzalloc(sizeof(*request)
6972 + sizeof(*request->ssids) * n_ssids
6973 + sizeof(*request->match_sets) * n_match_sets
6974 + sizeof(*request->scan_plans) * n_plans
6975 + sizeof(*request->channels) * n_channels
6976 + ie_len, GFP_KERNEL);
6977 if (!request)
6978 return ERR_PTR(-ENOMEM);
6979
6980 if (n_ssids)
6981 request->ssids = (void *)&request->channels[n_channels];
6982 request->n_ssids = n_ssids;
6983 if (ie_len) {
6984 if (n_ssids)
6985 request->ie = (void *)(request->ssids + n_ssids);
6986 else
6987 request->ie = (void *)(request->channels + n_channels);
6988 }
6989
6990 if (n_match_sets) {
6991 if (request->ie)
6992 request->match_sets = (void *)(request->ie + ie_len);
6993 else if (n_ssids)
6994 request->match_sets =
6995 (void *)(request->ssids + n_ssids);
6996 else
6997 request->match_sets =
6998 (void *)(request->channels + n_channels);
6999 }
7000 request->n_match_sets = n_match_sets;
7001
7002 if (n_match_sets)
7003 request->scan_plans = (void *)(request->match_sets +
7004 n_match_sets);
7005 else if (request->ie)
7006 request->scan_plans = (void *)(request->ie + ie_len);
7007 else if (n_ssids)
7008 request->scan_plans = (void *)(request->ssids + n_ssids);
7009 else
7010 request->scan_plans = (void *)(request->channels + n_channels);
7011
7012 request->n_scan_plans = n_plans;
7013
7014 i = 0;
7015 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7016 /* user specified, bail out if channel not found */
7017 nla_for_each_nested(attr,
7018 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7019 tmp) {
7020 struct ieee80211_channel *chan;
7021
7022 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7023
7024 if (!chan) {
7025 err = -EINVAL;
7026 goto out_free;
7027 }
7028
7029 /* ignore disabled channels */
7030 if (chan->flags & IEEE80211_CHAN_DISABLED)
7031 continue;
7032
7033 request->channels[i] = chan;
7034 i++;
7035 }
7036 } else {
7037 /* all channels */
7038 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7039 int j;
7040
7041 if (!wiphy->bands[band])
7042 continue;
7043 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7044 struct ieee80211_channel *chan;
7045
7046 chan = &wiphy->bands[band]->channels[j];
7047
7048 if (chan->flags & IEEE80211_CHAN_DISABLED)
7049 continue;
7050
7051 request->channels[i] = chan;
7052 i++;
7053 }
7054 }
7055 }
7056
7057 if (!i) {
7058 err = -EINVAL;
7059 goto out_free;
7060 }
7061
7062 request->n_channels = i;
7063
7064 i = 0;
7065 if (n_ssids) {
7066 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7067 tmp) {
7068 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7069 err = -EINVAL;
7070 goto out_free;
7071 }
7072 request->ssids[i].ssid_len = nla_len(attr);
7073 memcpy(request->ssids[i].ssid, nla_data(attr),
7074 nla_len(attr));
7075 i++;
7076 }
7077 }
7078
7079 i = 0;
7080 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7081 nla_for_each_nested(attr,
7082 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7083 tmp) {
7084 struct nlattr *ssid, *rssi;
7085
7086 err = nla_parse_nested(tb,
7087 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7088 attr, nl80211_match_policy);
7089 if (err)
7090 goto out_free;
7091 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7092 if (ssid) {
7093 if (WARN_ON(i >= n_match_sets)) {
7094 /* this indicates a programming error,
7095 * the loop above should have verified
7096 * things properly
7097 */
7098 err = -EINVAL;
7099 goto out_free;
7100 }
7101
7102 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7103 err = -EINVAL;
7104 goto out_free;
7105 }
7106 memcpy(request->match_sets[i].ssid.ssid,
7107 nla_data(ssid), nla_len(ssid));
7108 request->match_sets[i].ssid.ssid_len =
7109 nla_len(ssid);
7110 /* special attribute - old implementation w/a */
7111 request->match_sets[i].rssi_thold =
7112 default_match_rssi;
7113 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7114 if (rssi)
7115 request->match_sets[i].rssi_thold =
7116 nla_get_s32(rssi);
7117 }
7118 i++;
7119 }
7120
7121 /* there was no other matchset, so the RSSI one is alone */
7122 if (i == 0 && n_match_sets)
7123 request->match_sets[0].rssi_thold = default_match_rssi;
7124
7125 request->min_rssi_thold = INT_MAX;
7126 for (i = 0; i < n_match_sets; i++)
7127 request->min_rssi_thold =
7128 min(request->match_sets[i].rssi_thold,
7129 request->min_rssi_thold);
7130 } else {
7131 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7132 }
7133
7134 if (ie_len) {
7135 request->ie_len = ie_len;
7136 memcpy((void *)request->ie,
7137 nla_data(attrs[NL80211_ATTR_IE]),
7138 request->ie_len);
7139 }
7140
7141 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
7142 request->flags = nla_get_u32(
7143 attrs[NL80211_ATTR_SCAN_FLAGS]);
7144 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7145 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
7146 err = -EOPNOTSUPP;
7147 goto out_free;
7148 }
7149
7150 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7151 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
7152
7153 if (!wdev) /* must be net-detect */
7154 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7155
7156 if (!(wiphy->features & flg)) {
7157 err = -EOPNOTSUPP;
7158 goto out_free;
7159 }
7160
7161 if (wdev && wdev->current_bss) {
7162 err = -EOPNOTSUPP;
7163 goto out_free;
7164 }
7165
7166 err = nl80211_parse_random_mac(attrs, request->mac_addr,
7167 request->mac_addr_mask);
7168 if (err)
7169 goto out_free;
7170 }
7171 }
7172
7173 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7174 request->delay =
7175 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7176
7177 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7178 if (err)
7179 goto out_free;
7180
7181 request->scan_start = jiffies;
7182
7183 return request;
7184
7185 out_free:
7186 kfree(request);
7187 return ERR_PTR(err);
7188 }
7189
7190 static int nl80211_start_sched_scan(struct sk_buff *skb,
7191 struct genl_info *info)
7192 {
7193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7194 struct net_device *dev = info->user_ptr[1];
7195 struct wireless_dev *wdev = dev->ieee80211_ptr;
7196 struct cfg80211_sched_scan_request *sched_scan_req;
7197 int err;
7198
7199 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7200 !rdev->ops->sched_scan_start)
7201 return -EOPNOTSUPP;
7202
7203 if (rdev->sched_scan_req)
7204 return -EINPROGRESS;
7205
7206 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7207 info->attrs);
7208
7209 err = PTR_ERR_OR_ZERO(sched_scan_req);
7210 if (err)
7211 goto out_err;
7212
7213 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7214 if (err)
7215 goto out_free;
7216
7217 sched_scan_req->dev = dev;
7218 sched_scan_req->wiphy = &rdev->wiphy;
7219
7220 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7221 sched_scan_req->owner_nlportid = info->snd_portid;
7222
7223 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
7224
7225 nl80211_send_sched_scan(rdev, dev,
7226 NL80211_CMD_START_SCHED_SCAN);
7227 return 0;
7228
7229 out_free:
7230 kfree(sched_scan_req);
7231 out_err:
7232 return err;
7233 }
7234
7235 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7236 struct genl_info *info)
7237 {
7238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7239
7240 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
7241 !rdev->ops->sched_scan_stop)
7242 return -EOPNOTSUPP;
7243
7244 return __cfg80211_stop_sched_scan(rdev, false);
7245 }
7246
7247 static int nl80211_start_radar_detection(struct sk_buff *skb,
7248 struct genl_info *info)
7249 {
7250 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7251 struct net_device *dev = info->user_ptr[1];
7252 struct wireless_dev *wdev = dev->ieee80211_ptr;
7253 struct cfg80211_chan_def chandef;
7254 enum nl80211_dfs_regions dfs_region;
7255 unsigned int cac_time_ms;
7256 int err;
7257
7258 dfs_region = reg_get_dfs_region(wdev->wiphy);
7259 if (dfs_region == NL80211_DFS_UNSET)
7260 return -EINVAL;
7261
7262 err = nl80211_parse_chandef(rdev, info, &chandef);
7263 if (err)
7264 return err;
7265
7266 if (netif_carrier_ok(dev))
7267 return -EBUSY;
7268
7269 if (wdev->cac_started)
7270 return -EBUSY;
7271
7272 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7273 wdev->iftype);
7274 if (err < 0)
7275 return err;
7276
7277 if (err == 0)
7278 return -EINVAL;
7279
7280 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7281 return -EINVAL;
7282
7283 if (!rdev->ops->start_radar_detection)
7284 return -EOPNOTSUPP;
7285
7286 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7287 if (WARN_ON(!cac_time_ms))
7288 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7289
7290 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7291 if (!err) {
7292 wdev->chandef = chandef;
7293 wdev->cac_started = true;
7294 wdev->cac_start_time = jiffies;
7295 wdev->cac_time_ms = cac_time_ms;
7296 }
7297 return err;
7298 }
7299
7300 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7301 {
7302 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7303 struct net_device *dev = info->user_ptr[1];
7304 struct wireless_dev *wdev = dev->ieee80211_ptr;
7305 struct cfg80211_csa_settings params;
7306 /* csa_attrs is defined static to avoid waste of stack size - this
7307 * function is called under RTNL lock, so this should not be a problem.
7308 */
7309 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7310 int err;
7311 bool need_new_beacon = false;
7312 int len, i;
7313 u32 cs_count;
7314
7315 if (!rdev->ops->channel_switch ||
7316 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7317 return -EOPNOTSUPP;
7318
7319 switch (dev->ieee80211_ptr->iftype) {
7320 case NL80211_IFTYPE_AP:
7321 case NL80211_IFTYPE_P2P_GO:
7322 need_new_beacon = true;
7323
7324 /* useless if AP is not running */
7325 if (!wdev->beacon_interval)
7326 return -ENOTCONN;
7327 break;
7328 case NL80211_IFTYPE_ADHOC:
7329 if (!wdev->ssid_len)
7330 return -ENOTCONN;
7331 break;
7332 case NL80211_IFTYPE_MESH_POINT:
7333 if (!wdev->mesh_id_len)
7334 return -ENOTCONN;
7335 break;
7336 default:
7337 return -EOPNOTSUPP;
7338 }
7339
7340 memset(&params, 0, sizeof(params));
7341
7342 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7343 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7344 return -EINVAL;
7345
7346 /* only important for AP, IBSS and mesh create IEs internally */
7347 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7348 return -EINVAL;
7349
7350 /* Even though the attribute is u32, the specification says
7351 * u8, so let's make sure we don't overflow.
7352 */
7353 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7354 if (cs_count > 255)
7355 return -EINVAL;
7356
7357 params.count = cs_count;
7358
7359 if (!need_new_beacon)
7360 goto skip_beacons;
7361
7362 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7363 if (err)
7364 return err;
7365
7366 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7367 info->attrs[NL80211_ATTR_CSA_IES],
7368 nl80211_policy);
7369 if (err)
7370 return err;
7371
7372 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7373 if (err)
7374 return err;
7375
7376 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7377 return -EINVAL;
7378
7379 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7380 if (!len || (len % sizeof(u16)))
7381 return -EINVAL;
7382
7383 params.n_counter_offsets_beacon = len / sizeof(u16);
7384 if (rdev->wiphy.max_num_csa_counters &&
7385 (params.n_counter_offsets_beacon >
7386 rdev->wiphy.max_num_csa_counters))
7387 return -EINVAL;
7388
7389 params.counter_offsets_beacon =
7390 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7391
7392 /* sanity checks - counters should fit and be the same */
7393 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7394 u16 offset = params.counter_offsets_beacon[i];
7395
7396 if (offset >= params.beacon_csa.tail_len)
7397 return -EINVAL;
7398
7399 if (params.beacon_csa.tail[offset] != params.count)
7400 return -EINVAL;
7401 }
7402
7403 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7404 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7405 if (!len || (len % sizeof(u16)))
7406 return -EINVAL;
7407
7408 params.n_counter_offsets_presp = len / sizeof(u16);
7409 if (rdev->wiphy.max_num_csa_counters &&
7410 (params.n_counter_offsets_presp >
7411 rdev->wiphy.max_num_csa_counters))
7412 return -EINVAL;
7413
7414 params.counter_offsets_presp =
7415 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7416
7417 /* sanity checks - counters should fit and be the same */
7418 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7419 u16 offset = params.counter_offsets_presp[i];
7420
7421 if (offset >= params.beacon_csa.probe_resp_len)
7422 return -EINVAL;
7423
7424 if (params.beacon_csa.probe_resp[offset] !=
7425 params.count)
7426 return -EINVAL;
7427 }
7428 }
7429
7430 skip_beacons:
7431 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7432 if (err)
7433 return err;
7434
7435 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7436 wdev->iftype))
7437 return -EINVAL;
7438
7439 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7440 &params.chandef,
7441 wdev->iftype);
7442 if (err < 0)
7443 return err;
7444
7445 if (err > 0)
7446 params.radar_required = true;
7447
7448 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7449 params.block_tx = true;
7450
7451 wdev_lock(wdev);
7452 err = rdev_channel_switch(rdev, dev, &params);
7453 wdev_unlock(wdev);
7454
7455 return err;
7456 }
7457
7458 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7459 u32 seq, int flags,
7460 struct cfg80211_registered_device *rdev,
7461 struct wireless_dev *wdev,
7462 struct cfg80211_internal_bss *intbss)
7463 {
7464 struct cfg80211_bss *res = &intbss->pub;
7465 const struct cfg80211_bss_ies *ies;
7466 void *hdr;
7467 struct nlattr *bss;
7468
7469 ASSERT_WDEV_LOCK(wdev);
7470
7471 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7472 NL80211_CMD_NEW_SCAN_RESULTS);
7473 if (!hdr)
7474 return -1;
7475
7476 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7477
7478 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7479 goto nla_put_failure;
7480 if (wdev->netdev &&
7481 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7482 goto nla_put_failure;
7483 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7484 NL80211_ATTR_PAD))
7485 goto nla_put_failure;
7486
7487 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7488 if (!bss)
7489 goto nla_put_failure;
7490 if ((!is_zero_ether_addr(res->bssid) &&
7491 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7492 goto nla_put_failure;
7493
7494 rcu_read_lock();
7495 /* indicate whether we have probe response data or not */
7496 if (rcu_access_pointer(res->proberesp_ies) &&
7497 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7498 goto fail_unlock_rcu;
7499
7500 /* this pointer prefers to be pointed to probe response data
7501 * but is always valid
7502 */
7503 ies = rcu_dereference(res->ies);
7504 if (ies) {
7505 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7506 NL80211_BSS_PAD))
7507 goto fail_unlock_rcu;
7508 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7509 ies->len, ies->data))
7510 goto fail_unlock_rcu;
7511 }
7512
7513 /* and this pointer is always (unless driver didn't know) beacon data */
7514 ies = rcu_dereference(res->beacon_ies);
7515 if (ies && ies->from_beacon) {
7516 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7517 NL80211_BSS_PAD))
7518 goto fail_unlock_rcu;
7519 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7520 ies->len, ies->data))
7521 goto fail_unlock_rcu;
7522 }
7523 rcu_read_unlock();
7524
7525 if (res->beacon_interval &&
7526 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7527 goto nla_put_failure;
7528 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7529 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7530 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7531 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7532 jiffies_to_msecs(jiffies - intbss->ts)))
7533 goto nla_put_failure;
7534
7535 if (intbss->parent_tsf &&
7536 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7537 intbss->parent_tsf, NL80211_BSS_PAD) ||
7538 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7539 intbss->parent_bssid)))
7540 goto nla_put_failure;
7541
7542 if (intbss->ts_boottime &&
7543 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7544 intbss->ts_boottime, NL80211_BSS_PAD))
7545 goto nla_put_failure;
7546
7547 switch (rdev->wiphy.signal_type) {
7548 case CFG80211_SIGNAL_TYPE_MBM:
7549 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7550 goto nla_put_failure;
7551 break;
7552 case CFG80211_SIGNAL_TYPE_UNSPEC:
7553 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7554 goto nla_put_failure;
7555 break;
7556 default:
7557 break;
7558 }
7559
7560 switch (wdev->iftype) {
7561 case NL80211_IFTYPE_P2P_CLIENT:
7562 case NL80211_IFTYPE_STATION:
7563 if (intbss == wdev->current_bss &&
7564 nla_put_u32(msg, NL80211_BSS_STATUS,
7565 NL80211_BSS_STATUS_ASSOCIATED))
7566 goto nla_put_failure;
7567 break;
7568 case NL80211_IFTYPE_ADHOC:
7569 if (intbss == wdev->current_bss &&
7570 nla_put_u32(msg, NL80211_BSS_STATUS,
7571 NL80211_BSS_STATUS_IBSS_JOINED))
7572 goto nla_put_failure;
7573 break;
7574 default:
7575 break;
7576 }
7577
7578 nla_nest_end(msg, bss);
7579
7580 genlmsg_end(msg, hdr);
7581 return 0;
7582
7583 fail_unlock_rcu:
7584 rcu_read_unlock();
7585 nla_put_failure:
7586 genlmsg_cancel(msg, hdr);
7587 return -EMSGSIZE;
7588 }
7589
7590 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7591 {
7592 struct cfg80211_registered_device *rdev;
7593 struct cfg80211_internal_bss *scan;
7594 struct wireless_dev *wdev;
7595 int start = cb->args[2], idx = 0;
7596 int err;
7597
7598 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7599 if (err)
7600 return err;
7601
7602 wdev_lock(wdev);
7603 spin_lock_bh(&rdev->bss_lock);
7604 cfg80211_bss_expire(rdev);
7605
7606 cb->seq = rdev->bss_generation;
7607
7608 list_for_each_entry(scan, &rdev->bss_list, list) {
7609 if (++idx <= start)
7610 continue;
7611 if (nl80211_send_bss(skb, cb,
7612 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7613 rdev, wdev, scan) < 0) {
7614 idx--;
7615 break;
7616 }
7617 }
7618
7619 spin_unlock_bh(&rdev->bss_lock);
7620 wdev_unlock(wdev);
7621
7622 cb->args[2] = idx;
7623 nl80211_finish_wdev_dump(rdev);
7624
7625 return skb->len;
7626 }
7627
7628 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7629 int flags, struct net_device *dev,
7630 bool allow_radio_stats,
7631 struct survey_info *survey)
7632 {
7633 void *hdr;
7634 struct nlattr *infoattr;
7635
7636 /* skip radio stats if userspace didn't request them */
7637 if (!survey->channel && !allow_radio_stats)
7638 return 0;
7639
7640 hdr = nl80211hdr_put(msg, portid, seq, flags,
7641 NL80211_CMD_NEW_SURVEY_RESULTS);
7642 if (!hdr)
7643 return -ENOMEM;
7644
7645 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7646 goto nla_put_failure;
7647
7648 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7649 if (!infoattr)
7650 goto nla_put_failure;
7651
7652 if (survey->channel &&
7653 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7654 survey->channel->center_freq))
7655 goto nla_put_failure;
7656
7657 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7658 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7659 goto nla_put_failure;
7660 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7661 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7662 goto nla_put_failure;
7663 if ((survey->filled & SURVEY_INFO_TIME) &&
7664 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7665 survey->time, NL80211_SURVEY_INFO_PAD))
7666 goto nla_put_failure;
7667 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7668 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7669 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7670 goto nla_put_failure;
7671 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7672 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7673 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7674 goto nla_put_failure;
7675 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7676 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7677 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7678 goto nla_put_failure;
7679 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7680 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7681 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7682 goto nla_put_failure;
7683 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7684 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7685 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7686 goto nla_put_failure;
7687
7688 nla_nest_end(msg, infoattr);
7689
7690 genlmsg_end(msg, hdr);
7691 return 0;
7692
7693 nla_put_failure:
7694 genlmsg_cancel(msg, hdr);
7695 return -EMSGSIZE;
7696 }
7697
7698 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7699 {
7700 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7701 struct survey_info survey;
7702 struct cfg80211_registered_device *rdev;
7703 struct wireless_dev *wdev;
7704 int survey_idx = cb->args[2];
7705 int res;
7706 bool radio_stats;
7707
7708 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7709 if (res)
7710 return res;
7711
7712 /* prepare_wdev_dump parsed the attributes */
7713 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7714
7715 if (!wdev->netdev) {
7716 res = -EINVAL;
7717 goto out_err;
7718 }
7719
7720 if (!rdev->ops->dump_survey) {
7721 res = -EOPNOTSUPP;
7722 goto out_err;
7723 }
7724
7725 while (1) {
7726 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7727 if (res == -ENOENT)
7728 break;
7729 if (res)
7730 goto out_err;
7731
7732 /* don't send disabled channels, but do send non-channel data */
7733 if (survey.channel &&
7734 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7735 survey_idx++;
7736 continue;
7737 }
7738
7739 if (nl80211_send_survey(skb,
7740 NETLINK_CB(cb->skb).portid,
7741 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7742 wdev->netdev, radio_stats, &survey) < 0)
7743 goto out;
7744 survey_idx++;
7745 }
7746
7747 out:
7748 cb->args[2] = survey_idx;
7749 res = skb->len;
7750 out_err:
7751 nl80211_finish_wdev_dump(rdev);
7752 return res;
7753 }
7754
7755 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7756 {
7757 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7758 NL80211_WPA_VERSION_2));
7759 }
7760
7761 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7762 {
7763 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7764 struct net_device *dev = info->user_ptr[1];
7765 struct ieee80211_channel *chan;
7766 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
7767 int err, ssid_len, ie_len = 0, auth_data_len = 0;
7768 enum nl80211_auth_type auth_type;
7769 struct key_parse key;
7770 bool local_state_change;
7771
7772 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7773 return -EINVAL;
7774
7775 if (!info->attrs[NL80211_ATTR_MAC])
7776 return -EINVAL;
7777
7778 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7779 return -EINVAL;
7780
7781 if (!info->attrs[NL80211_ATTR_SSID])
7782 return -EINVAL;
7783
7784 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7785 return -EINVAL;
7786
7787 err = nl80211_parse_key(info, &key);
7788 if (err)
7789 return err;
7790
7791 if (key.idx >= 0) {
7792 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7793 return -EINVAL;
7794 if (!key.p.key || !key.p.key_len)
7795 return -EINVAL;
7796 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7797 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7798 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7799 key.p.key_len != WLAN_KEY_LEN_WEP104))
7800 return -EINVAL;
7801 if (key.idx > 3)
7802 return -EINVAL;
7803 } else {
7804 key.p.key_len = 0;
7805 key.p.key = NULL;
7806 }
7807
7808 if (key.idx >= 0) {
7809 int i;
7810 bool ok = false;
7811
7812 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7813 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7814 ok = true;
7815 break;
7816 }
7817 }
7818 if (!ok)
7819 return -EINVAL;
7820 }
7821
7822 if (!rdev->ops->auth)
7823 return -EOPNOTSUPP;
7824
7825 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7826 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7827 return -EOPNOTSUPP;
7828
7829 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7830 chan = nl80211_get_valid_chan(&rdev->wiphy,
7831 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7832 if (!chan)
7833 return -EINVAL;
7834
7835 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7836 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7837
7838 if (info->attrs[NL80211_ATTR_IE]) {
7839 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7840 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7841 }
7842
7843 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7844 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7845 return -EINVAL;
7846
7847 if ((auth_type == NL80211_AUTHTYPE_SAE ||
7848 auth_type == NL80211_AUTHTYPE_FILS_SK ||
7849 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
7850 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
7851 !info->attrs[NL80211_ATTR_AUTH_DATA])
7852 return -EINVAL;
7853
7854 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
7855 if (auth_type != NL80211_AUTHTYPE_SAE &&
7856 auth_type != NL80211_AUTHTYPE_FILS_SK &&
7857 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
7858 auth_type != NL80211_AUTHTYPE_FILS_PK)
7859 return -EINVAL;
7860 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
7861 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
7862 /* need to include at least Auth Transaction and Status Code */
7863 if (auth_data_len < 4)
7864 return -EINVAL;
7865 }
7866
7867 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7868
7869 /*
7870 * Since we no longer track auth state, ignore
7871 * requests to only change local state.
7872 */
7873 if (local_state_change)
7874 return 0;
7875
7876 wdev_lock(dev->ieee80211_ptr);
7877 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7878 ssid, ssid_len, ie, ie_len,
7879 key.p.key, key.p.key_len, key.idx,
7880 auth_data, auth_data_len);
7881 wdev_unlock(dev->ieee80211_ptr);
7882 return err;
7883 }
7884
7885 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7886 struct genl_info *info,
7887 struct cfg80211_crypto_settings *settings,
7888 int cipher_limit)
7889 {
7890 memset(settings, 0, sizeof(*settings));
7891
7892 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7893
7894 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7895 u16 proto;
7896
7897 proto = nla_get_u16(
7898 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7899 settings->control_port_ethertype = cpu_to_be16(proto);
7900 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7901 proto != ETH_P_PAE)
7902 return -EINVAL;
7903 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7904 settings->control_port_no_encrypt = true;
7905 } else
7906 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7907
7908 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7909 void *data;
7910 int len, i;
7911
7912 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7913 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7914 settings->n_ciphers_pairwise = len / sizeof(u32);
7915
7916 if (len % sizeof(u32))
7917 return -EINVAL;
7918
7919 if (settings->n_ciphers_pairwise > cipher_limit)
7920 return -EINVAL;
7921
7922 memcpy(settings->ciphers_pairwise, data, len);
7923
7924 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7925 if (!cfg80211_supported_cipher_suite(
7926 &rdev->wiphy,
7927 settings->ciphers_pairwise[i]))
7928 return -EINVAL;
7929 }
7930
7931 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7932 settings->cipher_group =
7933 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7934 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7935 settings->cipher_group))
7936 return -EINVAL;
7937 }
7938
7939 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7940 settings->wpa_versions =
7941 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7942 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7943 return -EINVAL;
7944 }
7945
7946 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7947 void *data;
7948 int len;
7949
7950 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7951 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7952 settings->n_akm_suites = len / sizeof(u32);
7953
7954 if (len % sizeof(u32))
7955 return -EINVAL;
7956
7957 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7958 return -EINVAL;
7959
7960 memcpy(settings->akm_suites, data, len);
7961 }
7962
7963 return 0;
7964 }
7965
7966 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7967 {
7968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7969 struct net_device *dev = info->user_ptr[1];
7970 struct ieee80211_channel *chan;
7971 struct cfg80211_assoc_request req = {};
7972 const u8 *bssid, *ssid;
7973 int err, ssid_len = 0;
7974
7975 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7976 return -EINVAL;
7977
7978 if (!info->attrs[NL80211_ATTR_MAC] ||
7979 !info->attrs[NL80211_ATTR_SSID] ||
7980 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7981 return -EINVAL;
7982
7983 if (!rdev->ops->assoc)
7984 return -EOPNOTSUPP;
7985
7986 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7987 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7988 return -EOPNOTSUPP;
7989
7990 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7991
7992 chan = nl80211_get_valid_chan(&rdev->wiphy,
7993 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7994 if (!chan)
7995 return -EINVAL;
7996
7997 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7998 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7999
8000 if (info->attrs[NL80211_ATTR_IE]) {
8001 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8002 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8003 }
8004
8005 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8006 enum nl80211_mfp mfp =
8007 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8008 if (mfp == NL80211_MFP_REQUIRED)
8009 req.use_mfp = true;
8010 else if (mfp != NL80211_MFP_NO)
8011 return -EINVAL;
8012 }
8013
8014 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8015 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8016
8017 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8018 req.flags |= ASSOC_REQ_DISABLE_HT;
8019
8020 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8021 memcpy(&req.ht_capa_mask,
8022 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8023 sizeof(req.ht_capa_mask));
8024
8025 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8026 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8027 return -EINVAL;
8028 memcpy(&req.ht_capa,
8029 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8030 sizeof(req.ht_capa));
8031 }
8032
8033 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8034 req.flags |= ASSOC_REQ_DISABLE_VHT;
8035
8036 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8037 memcpy(&req.vht_capa_mask,
8038 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8039 sizeof(req.vht_capa_mask));
8040
8041 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8042 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8043 return -EINVAL;
8044 memcpy(&req.vht_capa,
8045 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8046 sizeof(req.vht_capa));
8047 }
8048
8049 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8050 if (!((rdev->wiphy.features &
8051 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8052 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8053 !wiphy_ext_feature_isset(&rdev->wiphy,
8054 NL80211_EXT_FEATURE_RRM))
8055 return -EINVAL;
8056 req.flags |= ASSOC_REQ_USE_RRM;
8057 }
8058
8059 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8060 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8061 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8062 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8063 return -EINVAL;
8064 req.fils_nonces =
8065 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8066 }
8067
8068 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8069 if (!err) {
8070 wdev_lock(dev->ieee80211_ptr);
8071 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8072 ssid, ssid_len, &req);
8073 wdev_unlock(dev->ieee80211_ptr);
8074 }
8075
8076 return err;
8077 }
8078
8079 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8080 {
8081 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8082 struct net_device *dev = info->user_ptr[1];
8083 const u8 *ie = NULL, *bssid;
8084 int ie_len = 0, err;
8085 u16 reason_code;
8086 bool local_state_change;
8087
8088 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8089 return -EINVAL;
8090
8091 if (!info->attrs[NL80211_ATTR_MAC])
8092 return -EINVAL;
8093
8094 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8095 return -EINVAL;
8096
8097 if (!rdev->ops->deauth)
8098 return -EOPNOTSUPP;
8099
8100 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8101 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8102 return -EOPNOTSUPP;
8103
8104 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8105
8106 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8107 if (reason_code == 0) {
8108 /* Reason Code 0 is reserved */
8109 return -EINVAL;
8110 }
8111
8112 if (info->attrs[NL80211_ATTR_IE]) {
8113 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8114 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8115 }
8116
8117 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8118
8119 wdev_lock(dev->ieee80211_ptr);
8120 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8121 local_state_change);
8122 wdev_unlock(dev->ieee80211_ptr);
8123 return err;
8124 }
8125
8126 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8127 {
8128 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8129 struct net_device *dev = info->user_ptr[1];
8130 const u8 *ie = NULL, *bssid;
8131 int ie_len = 0, err;
8132 u16 reason_code;
8133 bool local_state_change;
8134
8135 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8136 return -EINVAL;
8137
8138 if (!info->attrs[NL80211_ATTR_MAC])
8139 return -EINVAL;
8140
8141 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8142 return -EINVAL;
8143
8144 if (!rdev->ops->disassoc)
8145 return -EOPNOTSUPP;
8146
8147 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8148 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8149 return -EOPNOTSUPP;
8150
8151 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8152
8153 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8154 if (reason_code == 0) {
8155 /* Reason Code 0 is reserved */
8156 return -EINVAL;
8157 }
8158
8159 if (info->attrs[NL80211_ATTR_IE]) {
8160 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8161 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8162 }
8163
8164 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8165
8166 wdev_lock(dev->ieee80211_ptr);
8167 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8168 local_state_change);
8169 wdev_unlock(dev->ieee80211_ptr);
8170 return err;
8171 }
8172
8173 static bool
8174 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8175 int mcast_rate[NUM_NL80211_BANDS],
8176 int rateval)
8177 {
8178 struct wiphy *wiphy = &rdev->wiphy;
8179 bool found = false;
8180 int band, i;
8181
8182 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8183 struct ieee80211_supported_band *sband;
8184
8185 sband = wiphy->bands[band];
8186 if (!sband)
8187 continue;
8188
8189 for (i = 0; i < sband->n_bitrates; i++) {
8190 if (sband->bitrates[i].bitrate == rateval) {
8191 mcast_rate[band] = i + 1;
8192 found = true;
8193 break;
8194 }
8195 }
8196 }
8197
8198 return found;
8199 }
8200
8201 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8202 {
8203 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8204 struct net_device *dev = info->user_ptr[1];
8205 struct cfg80211_ibss_params ibss;
8206 struct wiphy *wiphy;
8207 struct cfg80211_cached_keys *connkeys = NULL;
8208 int err;
8209
8210 memset(&ibss, 0, sizeof(ibss));
8211
8212 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8213 return -EINVAL;
8214
8215 if (!info->attrs[NL80211_ATTR_SSID] ||
8216 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8217 return -EINVAL;
8218
8219 ibss.beacon_interval = 100;
8220
8221 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8222 ibss.beacon_interval =
8223 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8224
8225 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8226 ibss.beacon_interval);
8227 if (err)
8228 return err;
8229
8230 if (!rdev->ops->join_ibss)
8231 return -EOPNOTSUPP;
8232
8233 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8234 return -EOPNOTSUPP;
8235
8236 wiphy = &rdev->wiphy;
8237
8238 if (info->attrs[NL80211_ATTR_MAC]) {
8239 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8240
8241 if (!is_valid_ether_addr(ibss.bssid))
8242 return -EINVAL;
8243 }
8244 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8245 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8246
8247 if (info->attrs[NL80211_ATTR_IE]) {
8248 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8249 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8250 }
8251
8252 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8253 if (err)
8254 return err;
8255
8256 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8257 NL80211_IFTYPE_ADHOC))
8258 return -EINVAL;
8259
8260 switch (ibss.chandef.width) {
8261 case NL80211_CHAN_WIDTH_5:
8262 case NL80211_CHAN_WIDTH_10:
8263 case NL80211_CHAN_WIDTH_20_NOHT:
8264 break;
8265 case NL80211_CHAN_WIDTH_20:
8266 case NL80211_CHAN_WIDTH_40:
8267 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8268 return -EINVAL;
8269 break;
8270 case NL80211_CHAN_WIDTH_80:
8271 case NL80211_CHAN_WIDTH_80P80:
8272 case NL80211_CHAN_WIDTH_160:
8273 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8274 return -EINVAL;
8275 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8276 NL80211_EXT_FEATURE_VHT_IBSS))
8277 return -EINVAL;
8278 break;
8279 default:
8280 return -EINVAL;
8281 }
8282
8283 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8284 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8285
8286 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8287 u8 *rates =
8288 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8289 int n_rates =
8290 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8291 struct ieee80211_supported_band *sband =
8292 wiphy->bands[ibss.chandef.chan->band];
8293
8294 err = ieee80211_get_ratemask(sband, rates, n_rates,
8295 &ibss.basic_rates);
8296 if (err)
8297 return err;
8298 }
8299
8300 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8301 memcpy(&ibss.ht_capa_mask,
8302 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8303 sizeof(ibss.ht_capa_mask));
8304
8305 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8306 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8307 return -EINVAL;
8308 memcpy(&ibss.ht_capa,
8309 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8310 sizeof(ibss.ht_capa));
8311 }
8312
8313 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8314 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8315 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8316 return -EINVAL;
8317
8318 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8319 bool no_ht = false;
8320
8321 connkeys = nl80211_parse_connkeys(rdev,
8322 info->attrs[NL80211_ATTR_KEYS],
8323 &no_ht);
8324 if (IS_ERR(connkeys))
8325 return PTR_ERR(connkeys);
8326
8327 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8328 no_ht) {
8329 kzfree(connkeys);
8330 return -EINVAL;
8331 }
8332 }
8333
8334 ibss.control_port =
8335 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8336
8337 ibss.userspace_handles_dfs =
8338 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8339
8340 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8341 if (err)
8342 kzfree(connkeys);
8343 return err;
8344 }
8345
8346 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8347 {
8348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8349 struct net_device *dev = info->user_ptr[1];
8350
8351 if (!rdev->ops->leave_ibss)
8352 return -EOPNOTSUPP;
8353
8354 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8355 return -EOPNOTSUPP;
8356
8357 return cfg80211_leave_ibss(rdev, dev, false);
8358 }
8359
8360 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8361 {
8362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8363 struct net_device *dev = info->user_ptr[1];
8364 int mcast_rate[NUM_NL80211_BANDS];
8365 u32 nla_rate;
8366 int err;
8367
8368 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8369 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8370 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8371 return -EOPNOTSUPP;
8372
8373 if (!rdev->ops->set_mcast_rate)
8374 return -EOPNOTSUPP;
8375
8376 memset(mcast_rate, 0, sizeof(mcast_rate));
8377
8378 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8379 return -EINVAL;
8380
8381 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8382 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8383 return -EINVAL;
8384
8385 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8386
8387 return err;
8388 }
8389
8390 static struct sk_buff *
8391 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8392 struct wireless_dev *wdev, int approxlen,
8393 u32 portid, u32 seq, enum nl80211_commands cmd,
8394 enum nl80211_attrs attr,
8395 const struct nl80211_vendor_cmd_info *info,
8396 gfp_t gfp)
8397 {
8398 struct sk_buff *skb;
8399 void *hdr;
8400 struct nlattr *data;
8401
8402 skb = nlmsg_new(approxlen + 100, gfp);
8403 if (!skb)
8404 return NULL;
8405
8406 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8407 if (!hdr) {
8408 kfree_skb(skb);
8409 return NULL;
8410 }
8411
8412 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8413 goto nla_put_failure;
8414
8415 if (info) {
8416 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8417 info->vendor_id))
8418 goto nla_put_failure;
8419 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8420 info->subcmd))
8421 goto nla_put_failure;
8422 }
8423
8424 if (wdev) {
8425 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8426 wdev_id(wdev), NL80211_ATTR_PAD))
8427 goto nla_put_failure;
8428 if (wdev->netdev &&
8429 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8430 wdev->netdev->ifindex))
8431 goto nla_put_failure;
8432 }
8433
8434 data = nla_nest_start(skb, attr);
8435 if (!data)
8436 goto nla_put_failure;
8437
8438 ((void **)skb->cb)[0] = rdev;
8439 ((void **)skb->cb)[1] = hdr;
8440 ((void **)skb->cb)[2] = data;
8441
8442 return skb;
8443
8444 nla_put_failure:
8445 kfree_skb(skb);
8446 return NULL;
8447 }
8448
8449 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8450 struct wireless_dev *wdev,
8451 enum nl80211_commands cmd,
8452 enum nl80211_attrs attr,
8453 int vendor_event_idx,
8454 int approxlen, gfp_t gfp)
8455 {
8456 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8457 const struct nl80211_vendor_cmd_info *info;
8458
8459 switch (cmd) {
8460 case NL80211_CMD_TESTMODE:
8461 if (WARN_ON(vendor_event_idx != -1))
8462 return NULL;
8463 info = NULL;
8464 break;
8465 case NL80211_CMD_VENDOR:
8466 if (WARN_ON(vendor_event_idx < 0 ||
8467 vendor_event_idx >= wiphy->n_vendor_events))
8468 return NULL;
8469 info = &wiphy->vendor_events[vendor_event_idx];
8470 break;
8471 default:
8472 WARN_ON(1);
8473 return NULL;
8474 }
8475
8476 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8477 cmd, attr, info, gfp);
8478 }
8479 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8480
8481 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8482 {
8483 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8484 void *hdr = ((void **)skb->cb)[1];
8485 struct nlattr *data = ((void **)skb->cb)[2];
8486 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8487
8488 /* clear CB data for netlink core to own from now on */
8489 memset(skb->cb, 0, sizeof(skb->cb));
8490
8491 nla_nest_end(skb, data);
8492 genlmsg_end(skb, hdr);
8493
8494 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8495 mcgrp = NL80211_MCGRP_VENDOR;
8496
8497 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8498 mcgrp, gfp);
8499 }
8500 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8501
8502 #ifdef CONFIG_NL80211_TESTMODE
8503 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8504 {
8505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8506 struct wireless_dev *wdev =
8507 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8508 int err;
8509
8510 if (!rdev->ops->testmode_cmd)
8511 return -EOPNOTSUPP;
8512
8513 if (IS_ERR(wdev)) {
8514 err = PTR_ERR(wdev);
8515 if (err != -EINVAL)
8516 return err;
8517 wdev = NULL;
8518 } else if (wdev->wiphy != &rdev->wiphy) {
8519 return -EINVAL;
8520 }
8521
8522 if (!info->attrs[NL80211_ATTR_TESTDATA])
8523 return -EINVAL;
8524
8525 rdev->cur_cmd_info = info;
8526 err = rdev_testmode_cmd(rdev, wdev,
8527 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8528 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8529 rdev->cur_cmd_info = NULL;
8530
8531 return err;
8532 }
8533
8534 static int nl80211_testmode_dump(struct sk_buff *skb,
8535 struct netlink_callback *cb)
8536 {
8537 struct cfg80211_registered_device *rdev;
8538 int err;
8539 long phy_idx;
8540 void *data = NULL;
8541 int data_len = 0;
8542
8543 rtnl_lock();
8544
8545 if (cb->args[0]) {
8546 /*
8547 * 0 is a valid index, but not valid for args[0],
8548 * so we need to offset by 1.
8549 */
8550 phy_idx = cb->args[0] - 1;
8551 } else {
8552 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8553
8554 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8555 attrbuf, nl80211_fam.maxattr, nl80211_policy);
8556 if (err)
8557 goto out_err;
8558
8559 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8560 if (IS_ERR(rdev)) {
8561 err = PTR_ERR(rdev);
8562 goto out_err;
8563 }
8564 phy_idx = rdev->wiphy_idx;
8565 rdev = NULL;
8566
8567 if (attrbuf[NL80211_ATTR_TESTDATA])
8568 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8569 }
8570
8571 if (cb->args[1]) {
8572 data = nla_data((void *)cb->args[1]);
8573 data_len = nla_len((void *)cb->args[1]);
8574 }
8575
8576 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8577 if (!rdev) {
8578 err = -ENOENT;
8579 goto out_err;
8580 }
8581
8582 if (!rdev->ops->testmode_dump) {
8583 err = -EOPNOTSUPP;
8584 goto out_err;
8585 }
8586
8587 while (1) {
8588 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8589 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8590 NL80211_CMD_TESTMODE);
8591 struct nlattr *tmdata;
8592
8593 if (!hdr)
8594 break;
8595
8596 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8597 genlmsg_cancel(skb, hdr);
8598 break;
8599 }
8600
8601 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8602 if (!tmdata) {
8603 genlmsg_cancel(skb, hdr);
8604 break;
8605 }
8606 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8607 nla_nest_end(skb, tmdata);
8608
8609 if (err == -ENOBUFS || err == -ENOENT) {
8610 genlmsg_cancel(skb, hdr);
8611 break;
8612 } else if (err) {
8613 genlmsg_cancel(skb, hdr);
8614 goto out_err;
8615 }
8616
8617 genlmsg_end(skb, hdr);
8618 }
8619
8620 err = skb->len;
8621 /* see above */
8622 cb->args[0] = phy_idx + 1;
8623 out_err:
8624 rtnl_unlock();
8625 return err;
8626 }
8627 #endif
8628
8629 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8630 {
8631 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8632 struct net_device *dev = info->user_ptr[1];
8633 struct cfg80211_connect_params connect;
8634 struct wiphy *wiphy;
8635 struct cfg80211_cached_keys *connkeys = NULL;
8636 int err;
8637
8638 memset(&connect, 0, sizeof(connect));
8639
8640 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8641 return -EINVAL;
8642
8643 if (!info->attrs[NL80211_ATTR_SSID] ||
8644 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8645 return -EINVAL;
8646
8647 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8648 connect.auth_type =
8649 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8650 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8651 NL80211_CMD_CONNECT))
8652 return -EINVAL;
8653 } else
8654 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8655
8656 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8657
8658 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8659 NL80211_MAX_NR_CIPHER_SUITES);
8660 if (err)
8661 return err;
8662
8663 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8664 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8665 return -EOPNOTSUPP;
8666
8667 wiphy = &rdev->wiphy;
8668
8669 connect.bg_scan_period = -1;
8670 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8671 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8672 connect.bg_scan_period =
8673 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8674 }
8675
8676 if (info->attrs[NL80211_ATTR_MAC])
8677 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8678 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8679 connect.bssid_hint =
8680 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8681 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8682 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8683
8684 if (info->attrs[NL80211_ATTR_IE]) {
8685 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8686 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8687 }
8688
8689 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8690 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8691 if (connect.mfp != NL80211_MFP_REQUIRED &&
8692 connect.mfp != NL80211_MFP_NO)
8693 return -EINVAL;
8694 } else {
8695 connect.mfp = NL80211_MFP_NO;
8696 }
8697
8698 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8699 connect.prev_bssid =
8700 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8701
8702 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8703 connect.channel = nl80211_get_valid_chan(
8704 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8705 if (!connect.channel)
8706 return -EINVAL;
8707 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8708 connect.channel_hint = nl80211_get_valid_chan(
8709 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8710 if (!connect.channel_hint)
8711 return -EINVAL;
8712 }
8713
8714 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8715 connkeys = nl80211_parse_connkeys(rdev,
8716 info->attrs[NL80211_ATTR_KEYS], NULL);
8717 if (IS_ERR(connkeys))
8718 return PTR_ERR(connkeys);
8719 }
8720
8721 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8722 connect.flags |= ASSOC_REQ_DISABLE_HT;
8723
8724 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8725 memcpy(&connect.ht_capa_mask,
8726 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8727 sizeof(connect.ht_capa_mask));
8728
8729 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8730 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8731 kzfree(connkeys);
8732 return -EINVAL;
8733 }
8734 memcpy(&connect.ht_capa,
8735 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8736 sizeof(connect.ht_capa));
8737 }
8738
8739 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8740 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8741
8742 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8743 memcpy(&connect.vht_capa_mask,
8744 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8745 sizeof(connect.vht_capa_mask));
8746
8747 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8748 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8749 kzfree(connkeys);
8750 return -EINVAL;
8751 }
8752 memcpy(&connect.vht_capa,
8753 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8754 sizeof(connect.vht_capa));
8755 }
8756
8757 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8758 if (!((rdev->wiphy.features &
8759 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8760 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8761 !wiphy_ext_feature_isset(&rdev->wiphy,
8762 NL80211_EXT_FEATURE_RRM)) {
8763 kzfree(connkeys);
8764 return -EINVAL;
8765 }
8766 connect.flags |= ASSOC_REQ_USE_RRM;
8767 }
8768
8769 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8770 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8771 kzfree(connkeys);
8772 return -EOPNOTSUPP;
8773 }
8774
8775 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8776 /* bss selection makes no sense if bssid is set */
8777 if (connect.bssid) {
8778 kzfree(connkeys);
8779 return -EINVAL;
8780 }
8781
8782 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8783 wiphy, &connect.bss_select);
8784 if (err) {
8785 kzfree(connkeys);
8786 return err;
8787 }
8788 }
8789
8790 wdev_lock(dev->ieee80211_ptr);
8791 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8792 connect.prev_bssid);
8793 wdev_unlock(dev->ieee80211_ptr);
8794 if (err)
8795 kzfree(connkeys);
8796 return err;
8797 }
8798
8799 static int nl80211_update_connect_params(struct sk_buff *skb,
8800 struct genl_info *info)
8801 {
8802 struct cfg80211_connect_params connect = {};
8803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8804 struct net_device *dev = info->user_ptr[1];
8805 struct wireless_dev *wdev = dev->ieee80211_ptr;
8806 u32 changed = 0;
8807 int ret;
8808
8809 if (!rdev->ops->update_connect_params)
8810 return -EOPNOTSUPP;
8811
8812 if (info->attrs[NL80211_ATTR_IE]) {
8813 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8814 return -EINVAL;
8815 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8816 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8817 changed |= UPDATE_ASSOC_IES;
8818 }
8819
8820 wdev_lock(dev->ieee80211_ptr);
8821 if (!wdev->current_bss)
8822 ret = -ENOLINK;
8823 else
8824 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
8825 wdev_unlock(dev->ieee80211_ptr);
8826
8827 return ret;
8828 }
8829
8830 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8831 {
8832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8833 struct net_device *dev = info->user_ptr[1];
8834 u16 reason;
8835 int ret;
8836
8837 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8838 reason = WLAN_REASON_DEAUTH_LEAVING;
8839 else
8840 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8841
8842 if (reason == 0)
8843 return -EINVAL;
8844
8845 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8846 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8847 return -EOPNOTSUPP;
8848
8849 wdev_lock(dev->ieee80211_ptr);
8850 ret = cfg80211_disconnect(rdev, dev, reason, true);
8851 wdev_unlock(dev->ieee80211_ptr);
8852 return ret;
8853 }
8854
8855 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8856 {
8857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8858 struct net *net;
8859 int err;
8860
8861 if (info->attrs[NL80211_ATTR_PID]) {
8862 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8863
8864 net = get_net_ns_by_pid(pid);
8865 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8866 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8867
8868 net = get_net_ns_by_fd(fd);
8869 } else {
8870 return -EINVAL;
8871 }
8872
8873 if (IS_ERR(net))
8874 return PTR_ERR(net);
8875
8876 err = 0;
8877
8878 /* check if anything to do */
8879 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8880 err = cfg80211_switch_netns(rdev, net);
8881
8882 put_net(net);
8883 return err;
8884 }
8885
8886 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8887 {
8888 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8889 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8890 struct cfg80211_pmksa *pmksa) = NULL;
8891 struct net_device *dev = info->user_ptr[1];
8892 struct cfg80211_pmksa pmksa;
8893
8894 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8895
8896 if (!info->attrs[NL80211_ATTR_MAC])
8897 return -EINVAL;
8898
8899 if (!info->attrs[NL80211_ATTR_PMKID])
8900 return -EINVAL;
8901
8902 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8903 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8904
8905 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8906 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8907 return -EOPNOTSUPP;
8908
8909 switch (info->genlhdr->cmd) {
8910 case NL80211_CMD_SET_PMKSA:
8911 rdev_ops = rdev->ops->set_pmksa;
8912 break;
8913 case NL80211_CMD_DEL_PMKSA:
8914 rdev_ops = rdev->ops->del_pmksa;
8915 break;
8916 default:
8917 WARN_ON(1);
8918 break;
8919 }
8920
8921 if (!rdev_ops)
8922 return -EOPNOTSUPP;
8923
8924 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8925 }
8926
8927 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8928 {
8929 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8930 struct net_device *dev = info->user_ptr[1];
8931
8932 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8933 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8934 return -EOPNOTSUPP;
8935
8936 if (!rdev->ops->flush_pmksa)
8937 return -EOPNOTSUPP;
8938
8939 return rdev_flush_pmksa(rdev, dev);
8940 }
8941
8942 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8943 {
8944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8945 struct net_device *dev = info->user_ptr[1];
8946 u8 action_code, dialog_token;
8947 u32 peer_capability = 0;
8948 u16 status_code;
8949 u8 *peer;
8950 bool initiator;
8951
8952 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8953 !rdev->ops->tdls_mgmt)
8954 return -EOPNOTSUPP;
8955
8956 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8957 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8958 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8959 !info->attrs[NL80211_ATTR_IE] ||
8960 !info->attrs[NL80211_ATTR_MAC])
8961 return -EINVAL;
8962
8963 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8964 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8965 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8966 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8967 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8968 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8969 peer_capability =
8970 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8971
8972 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8973 dialog_token, status_code, peer_capability,
8974 initiator,
8975 nla_data(info->attrs[NL80211_ATTR_IE]),
8976 nla_len(info->attrs[NL80211_ATTR_IE]));
8977 }
8978
8979 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8980 {
8981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8982 struct net_device *dev = info->user_ptr[1];
8983 enum nl80211_tdls_operation operation;
8984 u8 *peer;
8985
8986 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8987 !rdev->ops->tdls_oper)
8988 return -EOPNOTSUPP;
8989
8990 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8991 !info->attrs[NL80211_ATTR_MAC])
8992 return -EINVAL;
8993
8994 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8995 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8996
8997 return rdev_tdls_oper(rdev, dev, peer, operation);
8998 }
8999
9000 static int nl80211_remain_on_channel(struct sk_buff *skb,
9001 struct genl_info *info)
9002 {
9003 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9004 struct wireless_dev *wdev = info->user_ptr[1];
9005 struct cfg80211_chan_def chandef;
9006 struct sk_buff *msg;
9007 void *hdr;
9008 u64 cookie;
9009 u32 duration;
9010 int err;
9011
9012 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9013 !info->attrs[NL80211_ATTR_DURATION])
9014 return -EINVAL;
9015
9016 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9017
9018 if (!rdev->ops->remain_on_channel ||
9019 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9020 return -EOPNOTSUPP;
9021
9022 /*
9023 * We should be on that channel for at least a minimum amount of
9024 * time (10ms) but no longer than the driver supports.
9025 */
9026 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9027 duration > rdev->wiphy.max_remain_on_channel_duration)
9028 return -EINVAL;
9029
9030 err = nl80211_parse_chandef(rdev, info, &chandef);
9031 if (err)
9032 return err;
9033
9034 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9035 if (!msg)
9036 return -ENOMEM;
9037
9038 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9039 NL80211_CMD_REMAIN_ON_CHANNEL);
9040 if (!hdr) {
9041 err = -ENOBUFS;
9042 goto free_msg;
9043 }
9044
9045 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9046 duration, &cookie);
9047
9048 if (err)
9049 goto free_msg;
9050
9051 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9052 NL80211_ATTR_PAD))
9053 goto nla_put_failure;
9054
9055 genlmsg_end(msg, hdr);
9056
9057 return genlmsg_reply(msg, info);
9058
9059 nla_put_failure:
9060 err = -ENOBUFS;
9061 free_msg:
9062 nlmsg_free(msg);
9063 return err;
9064 }
9065
9066 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9067 struct genl_info *info)
9068 {
9069 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9070 struct wireless_dev *wdev = info->user_ptr[1];
9071 u64 cookie;
9072
9073 if (!info->attrs[NL80211_ATTR_COOKIE])
9074 return -EINVAL;
9075
9076 if (!rdev->ops->cancel_remain_on_channel)
9077 return -EOPNOTSUPP;
9078
9079 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9080
9081 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9082 }
9083
9084 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9085 struct genl_info *info)
9086 {
9087 struct cfg80211_bitrate_mask mask;
9088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9089 struct net_device *dev = info->user_ptr[1];
9090 int err;
9091
9092 if (!rdev->ops->set_bitrate_mask)
9093 return -EOPNOTSUPP;
9094
9095 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9096 if (err)
9097 return err;
9098
9099 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9100 }
9101
9102 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9103 {
9104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9105 struct wireless_dev *wdev = info->user_ptr[1];
9106 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9107
9108 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9109 return -EINVAL;
9110
9111 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9112 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9113
9114 switch (wdev->iftype) {
9115 case NL80211_IFTYPE_STATION:
9116 case NL80211_IFTYPE_ADHOC:
9117 case NL80211_IFTYPE_P2P_CLIENT:
9118 case NL80211_IFTYPE_AP:
9119 case NL80211_IFTYPE_AP_VLAN:
9120 case NL80211_IFTYPE_MESH_POINT:
9121 case NL80211_IFTYPE_P2P_GO:
9122 case NL80211_IFTYPE_P2P_DEVICE:
9123 break;
9124 case NL80211_IFTYPE_NAN:
9125 default:
9126 return -EOPNOTSUPP;
9127 }
9128
9129 /* not much point in registering if we can't reply */
9130 if (!rdev->ops->mgmt_tx)
9131 return -EOPNOTSUPP;
9132
9133 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9134 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9135 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9136 }
9137
9138 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9139 {
9140 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9141 struct wireless_dev *wdev = info->user_ptr[1];
9142 struct cfg80211_chan_def chandef;
9143 int err;
9144 void *hdr = NULL;
9145 u64 cookie;
9146 struct sk_buff *msg = NULL;
9147 struct cfg80211_mgmt_tx_params params = {
9148 .dont_wait_for_ack =
9149 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9150 };
9151
9152 if (!info->attrs[NL80211_ATTR_FRAME])
9153 return -EINVAL;
9154
9155 if (!rdev->ops->mgmt_tx)
9156 return -EOPNOTSUPP;
9157
9158 switch (wdev->iftype) {
9159 case NL80211_IFTYPE_P2P_DEVICE:
9160 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9161 return -EINVAL;
9162 case NL80211_IFTYPE_STATION:
9163 case NL80211_IFTYPE_ADHOC:
9164 case NL80211_IFTYPE_P2P_CLIENT:
9165 case NL80211_IFTYPE_AP:
9166 case NL80211_IFTYPE_AP_VLAN:
9167 case NL80211_IFTYPE_MESH_POINT:
9168 case NL80211_IFTYPE_P2P_GO:
9169 break;
9170 case NL80211_IFTYPE_NAN:
9171 default:
9172 return -EOPNOTSUPP;
9173 }
9174
9175 if (info->attrs[NL80211_ATTR_DURATION]) {
9176 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9177 return -EINVAL;
9178 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9179
9180 /*
9181 * We should wait on the channel for at least a minimum amount
9182 * of time (10ms) but no longer than the driver supports.
9183 */
9184 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9185 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9186 return -EINVAL;
9187 }
9188
9189 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9190
9191 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9192 return -EINVAL;
9193
9194 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9195
9196 /* get the channel if any has been specified, otherwise pass NULL to
9197 * the driver. The latter will use the current one
9198 */
9199 chandef.chan = NULL;
9200 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9201 err = nl80211_parse_chandef(rdev, info, &chandef);
9202 if (err)
9203 return err;
9204 }
9205
9206 if (!chandef.chan && params.offchan)
9207 return -EINVAL;
9208
9209 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9210 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9211
9212 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9213 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9214 int i;
9215
9216 if (len % sizeof(u16))
9217 return -EINVAL;
9218
9219 params.n_csa_offsets = len / sizeof(u16);
9220 params.csa_offsets =
9221 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9222
9223 /* check that all the offsets fit the frame */
9224 for (i = 0; i < params.n_csa_offsets; i++) {
9225 if (params.csa_offsets[i] >= params.len)
9226 return -EINVAL;
9227 }
9228 }
9229
9230 if (!params.dont_wait_for_ack) {
9231 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9232 if (!msg)
9233 return -ENOMEM;
9234
9235 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9236 NL80211_CMD_FRAME);
9237 if (!hdr) {
9238 err = -ENOBUFS;
9239 goto free_msg;
9240 }
9241 }
9242
9243 params.chan = chandef.chan;
9244 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9245 if (err)
9246 goto free_msg;
9247
9248 if (msg) {
9249 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9250 NL80211_ATTR_PAD))
9251 goto nla_put_failure;
9252
9253 genlmsg_end(msg, hdr);
9254 return genlmsg_reply(msg, info);
9255 }
9256
9257 return 0;
9258
9259 nla_put_failure:
9260 err = -ENOBUFS;
9261 free_msg:
9262 nlmsg_free(msg);
9263 return err;
9264 }
9265
9266 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9267 {
9268 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9269 struct wireless_dev *wdev = info->user_ptr[1];
9270 u64 cookie;
9271
9272 if (!info->attrs[NL80211_ATTR_COOKIE])
9273 return -EINVAL;
9274
9275 if (!rdev->ops->mgmt_tx_cancel_wait)
9276 return -EOPNOTSUPP;
9277
9278 switch (wdev->iftype) {
9279 case NL80211_IFTYPE_STATION:
9280 case NL80211_IFTYPE_ADHOC:
9281 case NL80211_IFTYPE_P2P_CLIENT:
9282 case NL80211_IFTYPE_AP:
9283 case NL80211_IFTYPE_AP_VLAN:
9284 case NL80211_IFTYPE_P2P_GO:
9285 case NL80211_IFTYPE_P2P_DEVICE:
9286 break;
9287 case NL80211_IFTYPE_NAN:
9288 default:
9289 return -EOPNOTSUPP;
9290 }
9291
9292 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9293
9294 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9295 }
9296
9297 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9298 {
9299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9300 struct wireless_dev *wdev;
9301 struct net_device *dev = info->user_ptr[1];
9302 u8 ps_state;
9303 bool state;
9304 int err;
9305
9306 if (!info->attrs[NL80211_ATTR_PS_STATE])
9307 return -EINVAL;
9308
9309 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9310
9311 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9312 return -EINVAL;
9313
9314 wdev = dev->ieee80211_ptr;
9315
9316 if (!rdev->ops->set_power_mgmt)
9317 return -EOPNOTSUPP;
9318
9319 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9320
9321 if (state == wdev->ps)
9322 return 0;
9323
9324 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9325 if (!err)
9326 wdev->ps = state;
9327 return err;
9328 }
9329
9330 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9331 {
9332 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9333 enum nl80211_ps_state ps_state;
9334 struct wireless_dev *wdev;
9335 struct net_device *dev = info->user_ptr[1];
9336 struct sk_buff *msg;
9337 void *hdr;
9338 int err;
9339
9340 wdev = dev->ieee80211_ptr;
9341
9342 if (!rdev->ops->set_power_mgmt)
9343 return -EOPNOTSUPP;
9344
9345 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9346 if (!msg)
9347 return -ENOMEM;
9348
9349 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9350 NL80211_CMD_GET_POWER_SAVE);
9351 if (!hdr) {
9352 err = -ENOBUFS;
9353 goto free_msg;
9354 }
9355
9356 if (wdev->ps)
9357 ps_state = NL80211_PS_ENABLED;
9358 else
9359 ps_state = NL80211_PS_DISABLED;
9360
9361 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9362 goto nla_put_failure;
9363
9364 genlmsg_end(msg, hdr);
9365 return genlmsg_reply(msg, info);
9366
9367 nla_put_failure:
9368 err = -ENOBUFS;
9369 free_msg:
9370 nlmsg_free(msg);
9371 return err;
9372 }
9373
9374 static const struct nla_policy
9375 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9376 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9377 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9378 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9379 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9380 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9381 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9382 };
9383
9384 static int nl80211_set_cqm_txe(struct genl_info *info,
9385 u32 rate, u32 pkts, u32 intvl)
9386 {
9387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9388 struct net_device *dev = info->user_ptr[1];
9389 struct wireless_dev *wdev = dev->ieee80211_ptr;
9390
9391 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9392 return -EINVAL;
9393
9394 if (!rdev->ops->set_cqm_txe_config)
9395 return -EOPNOTSUPP;
9396
9397 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9398 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9399 return -EOPNOTSUPP;
9400
9401 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9402 }
9403
9404 static int nl80211_set_cqm_rssi(struct genl_info *info,
9405 s32 threshold, u32 hysteresis)
9406 {
9407 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9408 struct net_device *dev = info->user_ptr[1];
9409 struct wireless_dev *wdev = dev->ieee80211_ptr;
9410
9411 if (threshold > 0)
9412 return -EINVAL;
9413
9414 /* disabling - hysteresis should also be zero then */
9415 if (threshold == 0)
9416 hysteresis = 0;
9417
9418 if (!rdev->ops->set_cqm_rssi_config)
9419 return -EOPNOTSUPP;
9420
9421 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9422 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9423 return -EOPNOTSUPP;
9424
9425 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9426 }
9427
9428 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9429 {
9430 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9431 struct nlattr *cqm;
9432 int err;
9433
9434 cqm = info->attrs[NL80211_ATTR_CQM];
9435 if (!cqm)
9436 return -EINVAL;
9437
9438 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9439 nl80211_attr_cqm_policy);
9440 if (err)
9441 return err;
9442
9443 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9444 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9445 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9446 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9447
9448 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9449 }
9450
9451 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9452 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9453 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9454 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9455 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9456 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9457
9458 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9459 }
9460
9461 return -EINVAL;
9462 }
9463
9464 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9465 {
9466 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9467 struct net_device *dev = info->user_ptr[1];
9468 struct ocb_setup setup = {};
9469 int err;
9470
9471 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9472 if (err)
9473 return err;
9474
9475 return cfg80211_join_ocb(rdev, dev, &setup);
9476 }
9477
9478 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9479 {
9480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9481 struct net_device *dev = info->user_ptr[1];
9482
9483 return cfg80211_leave_ocb(rdev, dev);
9484 }
9485
9486 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9487 {
9488 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9489 struct net_device *dev = info->user_ptr[1];
9490 struct mesh_config cfg;
9491 struct mesh_setup setup;
9492 int err;
9493
9494 /* start with default */
9495 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9496 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9497
9498 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9499 /* and parse parameters if given */
9500 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9501 if (err)
9502 return err;
9503 }
9504
9505 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9506 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9507 return -EINVAL;
9508
9509 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9510 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9511
9512 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9513 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9514 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9515 return -EINVAL;
9516
9517 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9518 setup.beacon_interval =
9519 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9520
9521 err = cfg80211_validate_beacon_int(rdev,
9522 NL80211_IFTYPE_MESH_POINT,
9523 setup.beacon_interval);
9524 if (err)
9525 return err;
9526 }
9527
9528 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9529 setup.dtim_period =
9530 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9531 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9532 return -EINVAL;
9533 }
9534
9535 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9536 /* parse additional setup parameters if given */
9537 err = nl80211_parse_mesh_setup(info, &setup);
9538 if (err)
9539 return err;
9540 }
9541
9542 if (setup.user_mpm)
9543 cfg.auto_open_plinks = false;
9544
9545 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9546 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9547 if (err)
9548 return err;
9549 } else {
9550 /* cfg80211_join_mesh() will sort it out */
9551 setup.chandef.chan = NULL;
9552 }
9553
9554 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9555 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9556 int n_rates =
9557 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9558 struct ieee80211_supported_band *sband;
9559
9560 if (!setup.chandef.chan)
9561 return -EINVAL;
9562
9563 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9564
9565 err = ieee80211_get_ratemask(sband, rates, n_rates,
9566 &setup.basic_rates);
9567 if (err)
9568 return err;
9569 }
9570
9571 if (info->attrs[NL80211_ATTR_TX_RATES]) {
9572 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
9573 if (err)
9574 return err;
9575
9576 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
9577 &setup.beacon_rate);
9578 if (err)
9579 return err;
9580 }
9581
9582 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9583 }
9584
9585 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9586 {
9587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9588 struct net_device *dev = info->user_ptr[1];
9589
9590 return cfg80211_leave_mesh(rdev, dev);
9591 }
9592
9593 #ifdef CONFIG_PM
9594 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9595 struct cfg80211_registered_device *rdev)
9596 {
9597 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9598 struct nlattr *nl_pats, *nl_pat;
9599 int i, pat_len;
9600
9601 if (!wowlan->n_patterns)
9602 return 0;
9603
9604 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9605 if (!nl_pats)
9606 return -ENOBUFS;
9607
9608 for (i = 0; i < wowlan->n_patterns; i++) {
9609 nl_pat = nla_nest_start(msg, i + 1);
9610 if (!nl_pat)
9611 return -ENOBUFS;
9612 pat_len = wowlan->patterns[i].pattern_len;
9613 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9614 wowlan->patterns[i].mask) ||
9615 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9616 wowlan->patterns[i].pattern) ||
9617 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9618 wowlan->patterns[i].pkt_offset))
9619 return -ENOBUFS;
9620 nla_nest_end(msg, nl_pat);
9621 }
9622 nla_nest_end(msg, nl_pats);
9623
9624 return 0;
9625 }
9626
9627 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9628 struct cfg80211_wowlan_tcp *tcp)
9629 {
9630 struct nlattr *nl_tcp;
9631
9632 if (!tcp)
9633 return 0;
9634
9635 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9636 if (!nl_tcp)
9637 return -ENOBUFS;
9638
9639 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9640 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9641 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9642 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9643 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9644 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9645 tcp->payload_len, tcp->payload) ||
9646 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9647 tcp->data_interval) ||
9648 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9649 tcp->wake_len, tcp->wake_data) ||
9650 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9651 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9652 return -ENOBUFS;
9653
9654 if (tcp->payload_seq.len &&
9655 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9656 sizeof(tcp->payload_seq), &tcp->payload_seq))
9657 return -ENOBUFS;
9658
9659 if (tcp->payload_tok.len &&
9660 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9661 sizeof(tcp->payload_tok) + tcp->tokens_size,
9662 &tcp->payload_tok))
9663 return -ENOBUFS;
9664
9665 nla_nest_end(msg, nl_tcp);
9666
9667 return 0;
9668 }
9669
9670 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9671 struct cfg80211_sched_scan_request *req)
9672 {
9673 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9674 int i;
9675
9676 if (!req)
9677 return 0;
9678
9679 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9680 if (!nd)
9681 return -ENOBUFS;
9682
9683 if (req->n_scan_plans == 1 &&
9684 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9685 req->scan_plans[0].interval * 1000))
9686 return -ENOBUFS;
9687
9688 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9689 return -ENOBUFS;
9690
9691 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9692 if (!freqs)
9693 return -ENOBUFS;
9694
9695 for (i = 0; i < req->n_channels; i++) {
9696 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9697 return -ENOBUFS;
9698 }
9699
9700 nla_nest_end(msg, freqs);
9701
9702 if (req->n_match_sets) {
9703 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9704 if (!matches)
9705 return -ENOBUFS;
9706
9707 for (i = 0; i < req->n_match_sets; i++) {
9708 match = nla_nest_start(msg, i);
9709 if (!match)
9710 return -ENOBUFS;
9711
9712 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9713 req->match_sets[i].ssid.ssid_len,
9714 req->match_sets[i].ssid.ssid))
9715 return -ENOBUFS;
9716 nla_nest_end(msg, match);
9717 }
9718 nla_nest_end(msg, matches);
9719 }
9720
9721 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9722 if (!scan_plans)
9723 return -ENOBUFS;
9724
9725 for (i = 0; i < req->n_scan_plans; i++) {
9726 scan_plan = nla_nest_start(msg, i + 1);
9727 if (!scan_plan)
9728 return -ENOBUFS;
9729
9730 if (!scan_plan ||
9731 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9732 req->scan_plans[i].interval) ||
9733 (req->scan_plans[i].iterations &&
9734 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9735 req->scan_plans[i].iterations)))
9736 return -ENOBUFS;
9737 nla_nest_end(msg, scan_plan);
9738 }
9739 nla_nest_end(msg, scan_plans);
9740
9741 nla_nest_end(msg, nd);
9742
9743 return 0;
9744 }
9745
9746 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9747 {
9748 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9749 struct sk_buff *msg;
9750 void *hdr;
9751 u32 size = NLMSG_DEFAULT_SIZE;
9752
9753 if (!rdev->wiphy.wowlan)
9754 return -EOPNOTSUPP;
9755
9756 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9757 /* adjust size to have room for all the data */
9758 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9759 rdev->wiphy.wowlan_config->tcp->payload_len +
9760 rdev->wiphy.wowlan_config->tcp->wake_len +
9761 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9762 }
9763
9764 msg = nlmsg_new(size, GFP_KERNEL);
9765 if (!msg)
9766 return -ENOMEM;
9767
9768 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9769 NL80211_CMD_GET_WOWLAN);
9770 if (!hdr)
9771 goto nla_put_failure;
9772
9773 if (rdev->wiphy.wowlan_config) {
9774 struct nlattr *nl_wowlan;
9775
9776 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9777 if (!nl_wowlan)
9778 goto nla_put_failure;
9779
9780 if ((rdev->wiphy.wowlan_config->any &&
9781 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9782 (rdev->wiphy.wowlan_config->disconnect &&
9783 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9784 (rdev->wiphy.wowlan_config->magic_pkt &&
9785 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9786 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9787 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9788 (rdev->wiphy.wowlan_config->eap_identity_req &&
9789 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9790 (rdev->wiphy.wowlan_config->four_way_handshake &&
9791 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9792 (rdev->wiphy.wowlan_config->rfkill_release &&
9793 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9794 goto nla_put_failure;
9795
9796 if (nl80211_send_wowlan_patterns(msg, rdev))
9797 goto nla_put_failure;
9798
9799 if (nl80211_send_wowlan_tcp(msg,
9800 rdev->wiphy.wowlan_config->tcp))
9801 goto nla_put_failure;
9802
9803 if (nl80211_send_wowlan_nd(
9804 msg,
9805 rdev->wiphy.wowlan_config->nd_config))
9806 goto nla_put_failure;
9807
9808 nla_nest_end(msg, nl_wowlan);
9809 }
9810
9811 genlmsg_end(msg, hdr);
9812 return genlmsg_reply(msg, info);
9813
9814 nla_put_failure:
9815 nlmsg_free(msg);
9816 return -ENOBUFS;
9817 }
9818
9819 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9820 struct nlattr *attr,
9821 struct cfg80211_wowlan *trig)
9822 {
9823 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9824 struct cfg80211_wowlan_tcp *cfg;
9825 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9826 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9827 u32 size;
9828 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9829 int err, port;
9830
9831 if (!rdev->wiphy.wowlan->tcp)
9832 return -EINVAL;
9833
9834 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
9835 nl80211_wowlan_tcp_policy);
9836 if (err)
9837 return err;
9838
9839 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9840 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9841 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9842 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9843 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9844 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9845 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9846 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9847 return -EINVAL;
9848
9849 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9850 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9851 return -EINVAL;
9852
9853 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9854 rdev->wiphy.wowlan->tcp->data_interval_max ||
9855 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9856 return -EINVAL;
9857
9858 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9859 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9860 return -EINVAL;
9861
9862 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9863 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9864 return -EINVAL;
9865
9866 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9867 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9868
9869 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9870 tokens_size = tokln - sizeof(*tok);
9871
9872 if (!tok->len || tokens_size % tok->len)
9873 return -EINVAL;
9874 if (!rdev->wiphy.wowlan->tcp->tok)
9875 return -EINVAL;
9876 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9877 return -EINVAL;
9878 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9879 return -EINVAL;
9880 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9881 return -EINVAL;
9882 if (tok->offset + tok->len > data_size)
9883 return -EINVAL;
9884 }
9885
9886 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9887 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9888 if (!rdev->wiphy.wowlan->tcp->seq)
9889 return -EINVAL;
9890 if (seq->len == 0 || seq->len > 4)
9891 return -EINVAL;
9892 if (seq->len + seq->offset > data_size)
9893 return -EINVAL;
9894 }
9895
9896 size = sizeof(*cfg);
9897 size += data_size;
9898 size += wake_size + wake_mask_size;
9899 size += tokens_size;
9900
9901 cfg = kzalloc(size, GFP_KERNEL);
9902 if (!cfg)
9903 return -ENOMEM;
9904 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9905 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9906 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9907 ETH_ALEN);
9908 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9909 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9910 else
9911 port = 0;
9912 #ifdef CONFIG_INET
9913 /* allocate a socket and port for it and use it */
9914 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9915 IPPROTO_TCP, &cfg->sock, 1);
9916 if (err) {
9917 kfree(cfg);
9918 return err;
9919 }
9920 if (inet_csk_get_port(cfg->sock->sk, port)) {
9921 sock_release(cfg->sock);
9922 kfree(cfg);
9923 return -EADDRINUSE;
9924 }
9925 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9926 #else
9927 if (!port) {
9928 kfree(cfg);
9929 return -EINVAL;
9930 }
9931 cfg->src_port = port;
9932 #endif
9933
9934 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9935 cfg->payload_len = data_size;
9936 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9937 memcpy((void *)cfg->payload,
9938 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9939 data_size);
9940 if (seq)
9941 cfg->payload_seq = *seq;
9942 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9943 cfg->wake_len = wake_size;
9944 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9945 memcpy((void *)cfg->wake_data,
9946 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9947 wake_size);
9948 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9949 data_size + wake_size;
9950 memcpy((void *)cfg->wake_mask,
9951 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9952 wake_mask_size);
9953 if (tok) {
9954 cfg->tokens_size = tokens_size;
9955 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9956 }
9957
9958 trig->tcp = cfg;
9959
9960 return 0;
9961 }
9962
9963 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9964 const struct wiphy_wowlan_support *wowlan,
9965 struct nlattr *attr,
9966 struct cfg80211_wowlan *trig)
9967 {
9968 struct nlattr **tb;
9969 int err;
9970
9971 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9972 if (!tb)
9973 return -ENOMEM;
9974
9975 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9976 err = -EOPNOTSUPP;
9977 goto out;
9978 }
9979
9980 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy);
9981 if (err)
9982 goto out;
9983
9984 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9985 err = PTR_ERR_OR_ZERO(trig->nd_config);
9986 if (err)
9987 trig->nd_config = NULL;
9988
9989 out:
9990 kfree(tb);
9991 return err;
9992 }
9993
9994 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9995 {
9996 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9997 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9998 struct cfg80211_wowlan new_triggers = {};
9999 struct cfg80211_wowlan *ntrig;
10000 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10001 int err, i;
10002 bool prev_enabled = rdev->wiphy.wowlan_config;
10003 bool regular = false;
10004
10005 if (!wowlan)
10006 return -EOPNOTSUPP;
10007
10008 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10009 cfg80211_rdev_free_wowlan(rdev);
10010 rdev->wiphy.wowlan_config = NULL;
10011 goto set_wakeup;
10012 }
10013
10014 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10015 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10016 nl80211_wowlan_policy);
10017 if (err)
10018 return err;
10019
10020 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10021 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10022 return -EINVAL;
10023 new_triggers.any = true;
10024 }
10025
10026 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10027 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10028 return -EINVAL;
10029 new_triggers.disconnect = true;
10030 regular = true;
10031 }
10032
10033 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10034 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10035 return -EINVAL;
10036 new_triggers.magic_pkt = true;
10037 regular = true;
10038 }
10039
10040 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10041 return -EINVAL;
10042
10043 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10044 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10045 return -EINVAL;
10046 new_triggers.gtk_rekey_failure = true;
10047 regular = true;
10048 }
10049
10050 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10051 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10052 return -EINVAL;
10053 new_triggers.eap_identity_req = true;
10054 regular = true;
10055 }
10056
10057 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10058 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10059 return -EINVAL;
10060 new_triggers.four_way_handshake = true;
10061 regular = true;
10062 }
10063
10064 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10065 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10066 return -EINVAL;
10067 new_triggers.rfkill_release = true;
10068 regular = true;
10069 }
10070
10071 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10072 struct nlattr *pat;
10073 int n_patterns = 0;
10074 int rem, pat_len, mask_len, pkt_offset;
10075 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10076
10077 regular = true;
10078
10079 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10080 rem)
10081 n_patterns++;
10082 if (n_patterns > wowlan->n_patterns)
10083 return -EINVAL;
10084
10085 new_triggers.patterns = kcalloc(n_patterns,
10086 sizeof(new_triggers.patterns[0]),
10087 GFP_KERNEL);
10088 if (!new_triggers.patterns)
10089 return -ENOMEM;
10090
10091 new_triggers.n_patterns = n_patterns;
10092 i = 0;
10093
10094 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10095 rem) {
10096 u8 *mask_pat;
10097
10098 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10099 NULL);
10100 err = -EINVAL;
10101 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10102 !pat_tb[NL80211_PKTPAT_PATTERN])
10103 goto error;
10104 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10105 mask_len = DIV_ROUND_UP(pat_len, 8);
10106 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10107 goto error;
10108 if (pat_len > wowlan->pattern_max_len ||
10109 pat_len < wowlan->pattern_min_len)
10110 goto error;
10111
10112 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10113 pkt_offset = 0;
10114 else
10115 pkt_offset = nla_get_u32(
10116 pat_tb[NL80211_PKTPAT_OFFSET]);
10117 if (pkt_offset > wowlan->max_pkt_offset)
10118 goto error;
10119 new_triggers.patterns[i].pkt_offset = pkt_offset;
10120
10121 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10122 if (!mask_pat) {
10123 err = -ENOMEM;
10124 goto error;
10125 }
10126 new_triggers.patterns[i].mask = mask_pat;
10127 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10128 mask_len);
10129 mask_pat += mask_len;
10130 new_triggers.patterns[i].pattern = mask_pat;
10131 new_triggers.patterns[i].pattern_len = pat_len;
10132 memcpy(mask_pat,
10133 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10134 pat_len);
10135 i++;
10136 }
10137 }
10138
10139 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10140 regular = true;
10141 err = nl80211_parse_wowlan_tcp(
10142 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10143 &new_triggers);
10144 if (err)
10145 goto error;
10146 }
10147
10148 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10149 regular = true;
10150 err = nl80211_parse_wowlan_nd(
10151 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10152 &new_triggers);
10153 if (err)
10154 goto error;
10155 }
10156
10157 /* The 'any' trigger means the device continues operating more or less
10158 * as in its normal operation mode and wakes up the host on most of the
10159 * normal interrupts (like packet RX, ...)
10160 * It therefore makes little sense to combine with the more constrained
10161 * wakeup trigger modes.
10162 */
10163 if (new_triggers.any && regular) {
10164 err = -EINVAL;
10165 goto error;
10166 }
10167
10168 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10169 if (!ntrig) {
10170 err = -ENOMEM;
10171 goto error;
10172 }
10173 cfg80211_rdev_free_wowlan(rdev);
10174 rdev->wiphy.wowlan_config = ntrig;
10175
10176 set_wakeup:
10177 if (rdev->ops->set_wakeup &&
10178 prev_enabled != !!rdev->wiphy.wowlan_config)
10179 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10180
10181 return 0;
10182 error:
10183 for (i = 0; i < new_triggers.n_patterns; i++)
10184 kfree(new_triggers.patterns[i].mask);
10185 kfree(new_triggers.patterns);
10186 if (new_triggers.tcp && new_triggers.tcp->sock)
10187 sock_release(new_triggers.tcp->sock);
10188 kfree(new_triggers.tcp);
10189 kfree(new_triggers.nd_config);
10190 return err;
10191 }
10192 #endif
10193
10194 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10195 struct cfg80211_registered_device *rdev)
10196 {
10197 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10198 int i, j, pat_len;
10199 struct cfg80211_coalesce_rules *rule;
10200
10201 if (!rdev->coalesce->n_rules)
10202 return 0;
10203
10204 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10205 if (!nl_rules)
10206 return -ENOBUFS;
10207
10208 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10209 nl_rule = nla_nest_start(msg, i + 1);
10210 if (!nl_rule)
10211 return -ENOBUFS;
10212
10213 rule = &rdev->coalesce->rules[i];
10214 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10215 rule->delay))
10216 return -ENOBUFS;
10217
10218 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10219 rule->condition))
10220 return -ENOBUFS;
10221
10222 nl_pats = nla_nest_start(msg,
10223 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10224 if (!nl_pats)
10225 return -ENOBUFS;
10226
10227 for (j = 0; j < rule->n_patterns; j++) {
10228 nl_pat = nla_nest_start(msg, j + 1);
10229 if (!nl_pat)
10230 return -ENOBUFS;
10231 pat_len = rule->patterns[j].pattern_len;
10232 if (nla_put(msg, NL80211_PKTPAT_MASK,
10233 DIV_ROUND_UP(pat_len, 8),
10234 rule->patterns[j].mask) ||
10235 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10236 rule->patterns[j].pattern) ||
10237 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10238 rule->patterns[j].pkt_offset))
10239 return -ENOBUFS;
10240 nla_nest_end(msg, nl_pat);
10241 }
10242 nla_nest_end(msg, nl_pats);
10243 nla_nest_end(msg, nl_rule);
10244 }
10245 nla_nest_end(msg, nl_rules);
10246
10247 return 0;
10248 }
10249
10250 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10251 {
10252 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10253 struct sk_buff *msg;
10254 void *hdr;
10255
10256 if (!rdev->wiphy.coalesce)
10257 return -EOPNOTSUPP;
10258
10259 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10260 if (!msg)
10261 return -ENOMEM;
10262
10263 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10264 NL80211_CMD_GET_COALESCE);
10265 if (!hdr)
10266 goto nla_put_failure;
10267
10268 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10269 goto nla_put_failure;
10270
10271 genlmsg_end(msg, hdr);
10272 return genlmsg_reply(msg, info);
10273
10274 nla_put_failure:
10275 nlmsg_free(msg);
10276 return -ENOBUFS;
10277 }
10278
10279 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10280 {
10281 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10282 int i, j;
10283 struct cfg80211_coalesce_rules *rule;
10284
10285 if (!coalesce)
10286 return;
10287
10288 for (i = 0; i < coalesce->n_rules; i++) {
10289 rule = &coalesce->rules[i];
10290 for (j = 0; j < rule->n_patterns; j++)
10291 kfree(rule->patterns[j].mask);
10292 kfree(rule->patterns);
10293 }
10294 kfree(coalesce->rules);
10295 kfree(coalesce);
10296 rdev->coalesce = NULL;
10297 }
10298
10299 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10300 struct nlattr *rule,
10301 struct cfg80211_coalesce_rules *new_rule)
10302 {
10303 int err, i;
10304 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10305 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10306 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10307 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10308
10309 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10310 nl80211_coalesce_policy);
10311 if (err)
10312 return err;
10313
10314 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10315 new_rule->delay =
10316 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10317 if (new_rule->delay > coalesce->max_delay)
10318 return -EINVAL;
10319
10320 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10321 new_rule->condition =
10322 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10323 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10324 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10325 return -EINVAL;
10326
10327 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10328 return -EINVAL;
10329
10330 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10331 rem)
10332 n_patterns++;
10333 if (n_patterns > coalesce->n_patterns)
10334 return -EINVAL;
10335
10336 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10337 GFP_KERNEL);
10338 if (!new_rule->patterns)
10339 return -ENOMEM;
10340
10341 new_rule->n_patterns = n_patterns;
10342 i = 0;
10343
10344 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10345 rem) {
10346 u8 *mask_pat;
10347
10348 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, NULL);
10349 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10350 !pat_tb[NL80211_PKTPAT_PATTERN])
10351 return -EINVAL;
10352 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10353 mask_len = DIV_ROUND_UP(pat_len, 8);
10354 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10355 return -EINVAL;
10356 if (pat_len > coalesce->pattern_max_len ||
10357 pat_len < coalesce->pattern_min_len)
10358 return -EINVAL;
10359
10360 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10361 pkt_offset = 0;
10362 else
10363 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10364 if (pkt_offset > coalesce->max_pkt_offset)
10365 return -EINVAL;
10366 new_rule->patterns[i].pkt_offset = pkt_offset;
10367
10368 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10369 if (!mask_pat)
10370 return -ENOMEM;
10371
10372 new_rule->patterns[i].mask = mask_pat;
10373 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10374 mask_len);
10375
10376 mask_pat += mask_len;
10377 new_rule->patterns[i].pattern = mask_pat;
10378 new_rule->patterns[i].pattern_len = pat_len;
10379 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10380 pat_len);
10381 i++;
10382 }
10383
10384 return 0;
10385 }
10386
10387 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10388 {
10389 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10390 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10391 struct cfg80211_coalesce new_coalesce = {};
10392 struct cfg80211_coalesce *n_coalesce;
10393 int err, rem_rule, n_rules = 0, i, j;
10394 struct nlattr *rule;
10395 struct cfg80211_coalesce_rules *tmp_rule;
10396
10397 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10398 return -EOPNOTSUPP;
10399
10400 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10401 cfg80211_rdev_free_coalesce(rdev);
10402 rdev_set_coalesce(rdev, NULL);
10403 return 0;
10404 }
10405
10406 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10407 rem_rule)
10408 n_rules++;
10409 if (n_rules > coalesce->n_rules)
10410 return -EINVAL;
10411
10412 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10413 GFP_KERNEL);
10414 if (!new_coalesce.rules)
10415 return -ENOMEM;
10416
10417 new_coalesce.n_rules = n_rules;
10418 i = 0;
10419
10420 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10421 rem_rule) {
10422 err = nl80211_parse_coalesce_rule(rdev, rule,
10423 &new_coalesce.rules[i]);
10424 if (err)
10425 goto error;
10426
10427 i++;
10428 }
10429
10430 err = rdev_set_coalesce(rdev, &new_coalesce);
10431 if (err)
10432 goto error;
10433
10434 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10435 if (!n_coalesce) {
10436 err = -ENOMEM;
10437 goto error;
10438 }
10439 cfg80211_rdev_free_coalesce(rdev);
10440 rdev->coalesce = n_coalesce;
10441
10442 return 0;
10443 error:
10444 for (i = 0; i < new_coalesce.n_rules; i++) {
10445 tmp_rule = &new_coalesce.rules[i];
10446 for (j = 0; j < tmp_rule->n_patterns; j++)
10447 kfree(tmp_rule->patterns[j].mask);
10448 kfree(tmp_rule->patterns);
10449 }
10450 kfree(new_coalesce.rules);
10451
10452 return err;
10453 }
10454
10455 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10456 {
10457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10458 struct net_device *dev = info->user_ptr[1];
10459 struct wireless_dev *wdev = dev->ieee80211_ptr;
10460 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10461 struct cfg80211_gtk_rekey_data rekey_data;
10462 int err;
10463
10464 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10465 return -EINVAL;
10466
10467 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10468 info->attrs[NL80211_ATTR_REKEY_DATA],
10469 nl80211_rekey_policy);
10470 if (err)
10471 return err;
10472
10473 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10474 return -ERANGE;
10475 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10476 return -ERANGE;
10477 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10478 return -ERANGE;
10479
10480 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10481 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10482 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10483
10484 wdev_lock(wdev);
10485 if (!wdev->current_bss) {
10486 err = -ENOTCONN;
10487 goto out;
10488 }
10489
10490 if (!rdev->ops->set_rekey_data) {
10491 err = -EOPNOTSUPP;
10492 goto out;
10493 }
10494
10495 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10496 out:
10497 wdev_unlock(wdev);
10498 return err;
10499 }
10500
10501 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10502 struct genl_info *info)
10503 {
10504 struct net_device *dev = info->user_ptr[1];
10505 struct wireless_dev *wdev = dev->ieee80211_ptr;
10506
10507 if (wdev->iftype != NL80211_IFTYPE_AP &&
10508 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10509 return -EINVAL;
10510
10511 if (wdev->ap_unexpected_nlportid)
10512 return -EBUSY;
10513
10514 wdev->ap_unexpected_nlportid = info->snd_portid;
10515 return 0;
10516 }
10517
10518 static int nl80211_probe_client(struct sk_buff *skb,
10519 struct genl_info *info)
10520 {
10521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10522 struct net_device *dev = info->user_ptr[1];
10523 struct wireless_dev *wdev = dev->ieee80211_ptr;
10524 struct sk_buff *msg;
10525 void *hdr;
10526 const u8 *addr;
10527 u64 cookie;
10528 int err;
10529
10530 if (wdev->iftype != NL80211_IFTYPE_AP &&
10531 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10532 return -EOPNOTSUPP;
10533
10534 if (!info->attrs[NL80211_ATTR_MAC])
10535 return -EINVAL;
10536
10537 if (!rdev->ops->probe_client)
10538 return -EOPNOTSUPP;
10539
10540 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10541 if (!msg)
10542 return -ENOMEM;
10543
10544 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10545 NL80211_CMD_PROBE_CLIENT);
10546 if (!hdr) {
10547 err = -ENOBUFS;
10548 goto free_msg;
10549 }
10550
10551 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10552
10553 err = rdev_probe_client(rdev, dev, addr, &cookie);
10554 if (err)
10555 goto free_msg;
10556
10557 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10558 NL80211_ATTR_PAD))
10559 goto nla_put_failure;
10560
10561 genlmsg_end(msg, hdr);
10562
10563 return genlmsg_reply(msg, info);
10564
10565 nla_put_failure:
10566 err = -ENOBUFS;
10567 free_msg:
10568 nlmsg_free(msg);
10569 return err;
10570 }
10571
10572 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10573 {
10574 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10575 struct cfg80211_beacon_registration *reg, *nreg;
10576 int rv;
10577
10578 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10579 return -EOPNOTSUPP;
10580
10581 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10582 if (!nreg)
10583 return -ENOMEM;
10584
10585 /* First, check if already registered. */
10586 spin_lock_bh(&rdev->beacon_registrations_lock);
10587 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10588 if (reg->nlportid == info->snd_portid) {
10589 rv = -EALREADY;
10590 goto out_err;
10591 }
10592 }
10593 /* Add it to the list */
10594 nreg->nlportid = info->snd_portid;
10595 list_add(&nreg->list, &rdev->beacon_registrations);
10596
10597 spin_unlock_bh(&rdev->beacon_registrations_lock);
10598
10599 return 0;
10600 out_err:
10601 spin_unlock_bh(&rdev->beacon_registrations_lock);
10602 kfree(nreg);
10603 return rv;
10604 }
10605
10606 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10607 {
10608 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10609 struct wireless_dev *wdev = info->user_ptr[1];
10610 int err;
10611
10612 if (!rdev->ops->start_p2p_device)
10613 return -EOPNOTSUPP;
10614
10615 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10616 return -EOPNOTSUPP;
10617
10618 if (wdev_running(wdev))
10619 return 0;
10620
10621 if (rfkill_blocked(rdev->rfkill))
10622 return -ERFKILL;
10623
10624 err = rdev_start_p2p_device(rdev, wdev);
10625 if (err)
10626 return err;
10627
10628 wdev->is_running = true;
10629 rdev->opencount++;
10630
10631 return 0;
10632 }
10633
10634 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10635 {
10636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10637 struct wireless_dev *wdev = info->user_ptr[1];
10638
10639 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10640 return -EOPNOTSUPP;
10641
10642 if (!rdev->ops->stop_p2p_device)
10643 return -EOPNOTSUPP;
10644
10645 cfg80211_stop_p2p_device(rdev, wdev);
10646
10647 return 0;
10648 }
10649
10650 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
10651 {
10652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10653 struct wireless_dev *wdev = info->user_ptr[1];
10654 struct cfg80211_nan_conf conf = {};
10655 int err;
10656
10657 if (wdev->iftype != NL80211_IFTYPE_NAN)
10658 return -EOPNOTSUPP;
10659
10660 if (wdev_running(wdev))
10661 return -EEXIST;
10662
10663 if (rfkill_blocked(rdev->rfkill))
10664 return -ERFKILL;
10665
10666 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
10667 return -EINVAL;
10668
10669 if (!info->attrs[NL80211_ATTR_NAN_DUAL])
10670 return -EINVAL;
10671
10672 conf.master_pref =
10673 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
10674 if (!conf.master_pref)
10675 return -EINVAL;
10676
10677 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
10678
10679 err = rdev_start_nan(rdev, wdev, &conf);
10680 if (err)
10681 return err;
10682
10683 wdev->is_running = true;
10684 rdev->opencount++;
10685
10686 return 0;
10687 }
10688
10689 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
10690 {
10691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10692 struct wireless_dev *wdev = info->user_ptr[1];
10693
10694 if (wdev->iftype != NL80211_IFTYPE_NAN)
10695 return -EOPNOTSUPP;
10696
10697 cfg80211_stop_nan(rdev, wdev);
10698
10699 return 0;
10700 }
10701
10702 static int validate_nan_filter(struct nlattr *filter_attr)
10703 {
10704 struct nlattr *attr;
10705 int len = 0, n_entries = 0, rem;
10706
10707 nla_for_each_nested(attr, filter_attr, rem) {
10708 len += nla_len(attr);
10709 n_entries++;
10710 }
10711
10712 if (len >= U8_MAX)
10713 return -EINVAL;
10714
10715 return n_entries;
10716 }
10717
10718 static int handle_nan_filter(struct nlattr *attr_filter,
10719 struct cfg80211_nan_func *func,
10720 bool tx)
10721 {
10722 struct nlattr *attr;
10723 int n_entries, rem, i;
10724 struct cfg80211_nan_func_filter *filter;
10725
10726 n_entries = validate_nan_filter(attr_filter);
10727 if (n_entries < 0)
10728 return n_entries;
10729
10730 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
10731
10732 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
10733 if (!filter)
10734 return -ENOMEM;
10735
10736 i = 0;
10737 nla_for_each_nested(attr, attr_filter, rem) {
10738 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
10739 filter[i].len = nla_len(attr);
10740 i++;
10741 }
10742 if (tx) {
10743 func->num_tx_filters = n_entries;
10744 func->tx_filters = filter;
10745 } else {
10746 func->num_rx_filters = n_entries;
10747 func->rx_filters = filter;
10748 }
10749
10750 return 0;
10751 }
10752
10753 static int nl80211_nan_add_func(struct sk_buff *skb,
10754 struct genl_info *info)
10755 {
10756 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10757 struct wireless_dev *wdev = info->user_ptr[1];
10758 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
10759 struct cfg80211_nan_func *func;
10760 struct sk_buff *msg = NULL;
10761 void *hdr = NULL;
10762 int err = 0;
10763
10764 if (wdev->iftype != NL80211_IFTYPE_NAN)
10765 return -EOPNOTSUPP;
10766
10767 if (!wdev_running(wdev))
10768 return -ENOTCONN;
10769
10770 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
10771 return -EINVAL;
10772
10773 if (wdev->owner_nlportid &&
10774 wdev->owner_nlportid != info->snd_portid)
10775 return -ENOTCONN;
10776
10777 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
10778 info->attrs[NL80211_ATTR_NAN_FUNC],
10779 nl80211_nan_func_policy);
10780 if (err)
10781 return err;
10782
10783 func = kzalloc(sizeof(*func), GFP_KERNEL);
10784 if (!func)
10785 return -ENOMEM;
10786
10787 func->cookie = wdev->wiphy->cookie_counter++;
10788
10789 if (!tb[NL80211_NAN_FUNC_TYPE] ||
10790 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
10791 err = -EINVAL;
10792 goto out;
10793 }
10794
10795
10796 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
10797
10798 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
10799 err = -EINVAL;
10800 goto out;
10801 }
10802
10803 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
10804 sizeof(func->service_id));
10805
10806 func->close_range =
10807 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
10808
10809 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
10810 func->serv_spec_info_len =
10811 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
10812 func->serv_spec_info =
10813 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
10814 func->serv_spec_info_len,
10815 GFP_KERNEL);
10816 if (!func->serv_spec_info) {
10817 err = -ENOMEM;
10818 goto out;
10819 }
10820 }
10821
10822 if (tb[NL80211_NAN_FUNC_TTL])
10823 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
10824
10825 switch (func->type) {
10826 case NL80211_NAN_FUNC_PUBLISH:
10827 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
10828 err = -EINVAL;
10829 goto out;
10830 }
10831
10832 func->publish_type =
10833 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
10834 func->publish_bcast =
10835 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
10836
10837 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
10838 func->publish_bcast) {
10839 err = -EINVAL;
10840 goto out;
10841 }
10842 break;
10843 case NL80211_NAN_FUNC_SUBSCRIBE:
10844 func->subscribe_active =
10845 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
10846 break;
10847 case NL80211_NAN_FUNC_FOLLOW_UP:
10848 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
10849 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) {
10850 err = -EINVAL;
10851 goto out;
10852 }
10853
10854 func->followup_id =
10855 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
10856 func->followup_reqid =
10857 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
10858 memcpy(func->followup_dest.addr,
10859 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
10860 sizeof(func->followup_dest.addr));
10861 if (func->ttl) {
10862 err = -EINVAL;
10863 goto out;
10864 }
10865 break;
10866 default:
10867 err = -EINVAL;
10868 goto out;
10869 }
10870
10871 if (tb[NL80211_NAN_FUNC_SRF]) {
10872 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
10873
10874 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
10875 tb[NL80211_NAN_FUNC_SRF],
10876 nl80211_nan_srf_policy);
10877 if (err)
10878 goto out;
10879
10880 func->srf_include =
10881 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
10882
10883 if (srf_tb[NL80211_NAN_SRF_BF]) {
10884 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
10885 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
10886 err = -EINVAL;
10887 goto out;
10888 }
10889
10890 func->srf_bf_len =
10891 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
10892 func->srf_bf =
10893 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
10894 func->srf_bf_len, GFP_KERNEL);
10895 if (!func->srf_bf) {
10896 err = -ENOMEM;
10897 goto out;
10898 }
10899
10900 func->srf_bf_idx =
10901 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
10902 } else {
10903 struct nlattr *attr, *mac_attr =
10904 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
10905 int n_entries, rem, i = 0;
10906
10907 if (!mac_attr) {
10908 err = -EINVAL;
10909 goto out;
10910 }
10911
10912 n_entries = validate_acl_mac_addrs(mac_attr);
10913 if (n_entries <= 0) {
10914 err = -EINVAL;
10915 goto out;
10916 }
10917
10918 func->srf_num_macs = n_entries;
10919 func->srf_macs =
10920 kzalloc(sizeof(*func->srf_macs) * n_entries,
10921 GFP_KERNEL);
10922 if (!func->srf_macs) {
10923 err = -ENOMEM;
10924 goto out;
10925 }
10926
10927 nla_for_each_nested(attr, mac_attr, rem)
10928 memcpy(func->srf_macs[i++].addr, nla_data(attr),
10929 sizeof(*func->srf_macs));
10930 }
10931 }
10932
10933 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
10934 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
10935 func, true);
10936 if (err)
10937 goto out;
10938 }
10939
10940 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
10941 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
10942 func, false);
10943 if (err)
10944 goto out;
10945 }
10946
10947 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10948 if (!msg) {
10949 err = -ENOMEM;
10950 goto out;
10951 }
10952
10953 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10954 NL80211_CMD_ADD_NAN_FUNCTION);
10955 /* This can't really happen - we just allocated 4KB */
10956 if (WARN_ON(!hdr)) {
10957 err = -ENOMEM;
10958 goto out;
10959 }
10960
10961 err = rdev_add_nan_func(rdev, wdev, func);
10962 out:
10963 if (err < 0) {
10964 cfg80211_free_nan_func(func);
10965 nlmsg_free(msg);
10966 return err;
10967 }
10968
10969 /* propagate the instance id and cookie to userspace */
10970 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
10971 NL80211_ATTR_PAD))
10972 goto nla_put_failure;
10973
10974 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
10975 if (!func_attr)
10976 goto nla_put_failure;
10977
10978 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
10979 func->instance_id))
10980 goto nla_put_failure;
10981
10982 nla_nest_end(msg, func_attr);
10983
10984 genlmsg_end(msg, hdr);
10985 return genlmsg_reply(msg, info);
10986
10987 nla_put_failure:
10988 nlmsg_free(msg);
10989 return -ENOBUFS;
10990 }
10991
10992 static int nl80211_nan_del_func(struct sk_buff *skb,
10993 struct genl_info *info)
10994 {
10995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10996 struct wireless_dev *wdev = info->user_ptr[1];
10997 u64 cookie;
10998
10999 if (wdev->iftype != NL80211_IFTYPE_NAN)
11000 return -EOPNOTSUPP;
11001
11002 if (!wdev_running(wdev))
11003 return -ENOTCONN;
11004
11005 if (!info->attrs[NL80211_ATTR_COOKIE])
11006 return -EINVAL;
11007
11008 if (wdev->owner_nlportid &&
11009 wdev->owner_nlportid != info->snd_portid)
11010 return -ENOTCONN;
11011
11012 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11013
11014 rdev_del_nan_func(rdev, wdev, cookie);
11015
11016 return 0;
11017 }
11018
11019 static int nl80211_nan_change_config(struct sk_buff *skb,
11020 struct genl_info *info)
11021 {
11022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11023 struct wireless_dev *wdev = info->user_ptr[1];
11024 struct cfg80211_nan_conf conf = {};
11025 u32 changed = 0;
11026
11027 if (wdev->iftype != NL80211_IFTYPE_NAN)
11028 return -EOPNOTSUPP;
11029
11030 if (!wdev_running(wdev))
11031 return -ENOTCONN;
11032
11033 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11034 conf.master_pref =
11035 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11036 if (conf.master_pref <= 1 || conf.master_pref == 255)
11037 return -EINVAL;
11038
11039 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11040 }
11041
11042 if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
11043 conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
11044 changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
11045 }
11046
11047 if (!changed)
11048 return -EINVAL;
11049
11050 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11051 }
11052
11053 void cfg80211_nan_match(struct wireless_dev *wdev,
11054 struct cfg80211_nan_match_params *match, gfp_t gfp)
11055 {
11056 struct wiphy *wiphy = wdev->wiphy;
11057 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11058 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11059 struct sk_buff *msg;
11060 void *hdr;
11061
11062 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11063 return;
11064
11065 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11066 if (!msg)
11067 return;
11068
11069 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11070 if (!hdr) {
11071 nlmsg_free(msg);
11072 return;
11073 }
11074
11075 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11076 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11077 wdev->netdev->ifindex)) ||
11078 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11079 NL80211_ATTR_PAD))
11080 goto nla_put_failure;
11081
11082 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11083 NL80211_ATTR_PAD) ||
11084 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11085 goto nla_put_failure;
11086
11087 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11088 if (!match_attr)
11089 goto nla_put_failure;
11090
11091 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11092 if (!local_func_attr)
11093 goto nla_put_failure;
11094
11095 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11096 goto nla_put_failure;
11097
11098 nla_nest_end(msg, local_func_attr);
11099
11100 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11101 if (!peer_func_attr)
11102 goto nla_put_failure;
11103
11104 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11105 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11106 goto nla_put_failure;
11107
11108 if (match->info && match->info_len &&
11109 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11110 match->info))
11111 goto nla_put_failure;
11112
11113 nla_nest_end(msg, peer_func_attr);
11114 nla_nest_end(msg, match_attr);
11115 genlmsg_end(msg, hdr);
11116
11117 if (!wdev->owner_nlportid)
11118 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11119 msg, 0, NL80211_MCGRP_NAN, gfp);
11120 else
11121 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11122 wdev->owner_nlportid);
11123
11124 return;
11125
11126 nla_put_failure:
11127 nlmsg_free(msg);
11128 }
11129 EXPORT_SYMBOL(cfg80211_nan_match);
11130
11131 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11132 u8 inst_id,
11133 enum nl80211_nan_func_term_reason reason,
11134 u64 cookie, gfp_t gfp)
11135 {
11136 struct wiphy *wiphy = wdev->wiphy;
11137 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11138 struct sk_buff *msg;
11139 struct nlattr *func_attr;
11140 void *hdr;
11141
11142 if (WARN_ON(!inst_id))
11143 return;
11144
11145 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11146 if (!msg)
11147 return;
11148
11149 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11150 if (!hdr) {
11151 nlmsg_free(msg);
11152 return;
11153 }
11154
11155 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11156 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11157 wdev->netdev->ifindex)) ||
11158 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11159 NL80211_ATTR_PAD))
11160 goto nla_put_failure;
11161
11162 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11163 NL80211_ATTR_PAD))
11164 goto nla_put_failure;
11165
11166 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11167 if (!func_attr)
11168 goto nla_put_failure;
11169
11170 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11171 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11172 goto nla_put_failure;
11173
11174 nla_nest_end(msg, func_attr);
11175 genlmsg_end(msg, hdr);
11176
11177 if (!wdev->owner_nlportid)
11178 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11179 msg, 0, NL80211_MCGRP_NAN, gfp);
11180 else
11181 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11182 wdev->owner_nlportid);
11183
11184 return;
11185
11186 nla_put_failure:
11187 nlmsg_free(msg);
11188 }
11189 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11190
11191 static int nl80211_get_protocol_features(struct sk_buff *skb,
11192 struct genl_info *info)
11193 {
11194 void *hdr;
11195 struct sk_buff *msg;
11196
11197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11198 if (!msg)
11199 return -ENOMEM;
11200
11201 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11202 NL80211_CMD_GET_PROTOCOL_FEATURES);
11203 if (!hdr)
11204 goto nla_put_failure;
11205
11206 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11207 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11208 goto nla_put_failure;
11209
11210 genlmsg_end(msg, hdr);
11211 return genlmsg_reply(msg, info);
11212
11213 nla_put_failure:
11214 kfree_skb(msg);
11215 return -ENOBUFS;
11216 }
11217
11218 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11219 {
11220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11221 struct cfg80211_update_ft_ies_params ft_params;
11222 struct net_device *dev = info->user_ptr[1];
11223
11224 if (!rdev->ops->update_ft_ies)
11225 return -EOPNOTSUPP;
11226
11227 if (!info->attrs[NL80211_ATTR_MDID] ||
11228 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11229 return -EINVAL;
11230
11231 memset(&ft_params, 0, sizeof(ft_params));
11232 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11233 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11234 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11235
11236 return rdev_update_ft_ies(rdev, dev, &ft_params);
11237 }
11238
11239 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11240 struct genl_info *info)
11241 {
11242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11243 struct wireless_dev *wdev = info->user_ptr[1];
11244 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11245 u16 duration;
11246 int ret;
11247
11248 if (!rdev->ops->crit_proto_start)
11249 return -EOPNOTSUPP;
11250
11251 if (WARN_ON(!rdev->ops->crit_proto_stop))
11252 return -EINVAL;
11253
11254 if (rdev->crit_proto_nlportid)
11255 return -EBUSY;
11256
11257 /* determine protocol if provided */
11258 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11259 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11260
11261 if (proto >= NUM_NL80211_CRIT_PROTO)
11262 return -EINVAL;
11263
11264 /* timeout must be provided */
11265 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11266 return -EINVAL;
11267
11268 duration =
11269 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11270
11271 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11272 return -ERANGE;
11273
11274 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11275 if (!ret)
11276 rdev->crit_proto_nlportid = info->snd_portid;
11277
11278 return ret;
11279 }
11280
11281 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11282 struct genl_info *info)
11283 {
11284 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11285 struct wireless_dev *wdev = info->user_ptr[1];
11286
11287 if (!rdev->ops->crit_proto_stop)
11288 return -EOPNOTSUPP;
11289
11290 if (rdev->crit_proto_nlportid) {
11291 rdev->crit_proto_nlportid = 0;
11292 rdev_crit_proto_stop(rdev, wdev);
11293 }
11294 return 0;
11295 }
11296
11297 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11298 {
11299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11300 struct wireless_dev *wdev =
11301 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11302 int i, err;
11303 u32 vid, subcmd;
11304
11305 if (!rdev->wiphy.vendor_commands)
11306 return -EOPNOTSUPP;
11307
11308 if (IS_ERR(wdev)) {
11309 err = PTR_ERR(wdev);
11310 if (err != -EINVAL)
11311 return err;
11312 wdev = NULL;
11313 } else if (wdev->wiphy != &rdev->wiphy) {
11314 return -EINVAL;
11315 }
11316
11317 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11318 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11319 return -EINVAL;
11320
11321 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11322 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11323 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11324 const struct wiphy_vendor_command *vcmd;
11325 void *data = NULL;
11326 int len = 0;
11327
11328 vcmd = &rdev->wiphy.vendor_commands[i];
11329
11330 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11331 continue;
11332
11333 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11334 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11335 if (!wdev)
11336 return -EINVAL;
11337 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11338 !wdev->netdev)
11339 return -EINVAL;
11340
11341 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11342 if (!wdev_running(wdev))
11343 return -ENETDOWN;
11344 }
11345
11346 if (!vcmd->doit)
11347 return -EOPNOTSUPP;
11348 } else {
11349 wdev = NULL;
11350 }
11351
11352 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11353 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11354 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11355 }
11356
11357 rdev->cur_cmd_info = info;
11358 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11359 data, len);
11360 rdev->cur_cmd_info = NULL;
11361 return err;
11362 }
11363
11364 return -EOPNOTSUPP;
11365 }
11366
11367 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11368 struct netlink_callback *cb,
11369 struct cfg80211_registered_device **rdev,
11370 struct wireless_dev **wdev)
11371 {
11372 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11373 u32 vid, subcmd;
11374 unsigned int i;
11375 int vcmd_idx = -1;
11376 int err;
11377 void *data = NULL;
11378 unsigned int data_len = 0;
11379
11380 rtnl_lock();
11381
11382 if (cb->args[0]) {
11383 /* subtract the 1 again here */
11384 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11385 struct wireless_dev *tmp;
11386
11387 if (!wiphy) {
11388 err = -ENODEV;
11389 goto out_unlock;
11390 }
11391 *rdev = wiphy_to_rdev(wiphy);
11392 *wdev = NULL;
11393
11394 if (cb->args[1]) {
11395 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11396 if (tmp->identifier == cb->args[1] - 1) {
11397 *wdev = tmp;
11398 break;
11399 }
11400 }
11401 }
11402
11403 /* keep rtnl locked in successful case */
11404 return 0;
11405 }
11406
11407 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
11408 attrbuf, nl80211_fam.maxattr, nl80211_policy);
11409 if (err)
11410 goto out_unlock;
11411
11412 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11413 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
11414 err = -EINVAL;
11415 goto out_unlock;
11416 }
11417
11418 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11419 if (IS_ERR(*wdev))
11420 *wdev = NULL;
11421
11422 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11423 if (IS_ERR(*rdev)) {
11424 err = PTR_ERR(*rdev);
11425 goto out_unlock;
11426 }
11427
11428 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11429 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11430
11431 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11432 const struct wiphy_vendor_command *vcmd;
11433
11434 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11435
11436 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11437 continue;
11438
11439 if (!vcmd->dumpit) {
11440 err = -EOPNOTSUPP;
11441 goto out_unlock;
11442 }
11443
11444 vcmd_idx = i;
11445 break;
11446 }
11447
11448 if (vcmd_idx < 0) {
11449 err = -EOPNOTSUPP;
11450 goto out_unlock;
11451 }
11452
11453 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11454 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11455 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11456 }
11457
11458 /* 0 is the first index - add 1 to parse only once */
11459 cb->args[0] = (*rdev)->wiphy_idx + 1;
11460 /* add 1 to know if it was NULL */
11461 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11462 cb->args[2] = vcmd_idx;
11463 cb->args[3] = (unsigned long)data;
11464 cb->args[4] = data_len;
11465
11466 /* keep rtnl locked in successful case */
11467 return 0;
11468 out_unlock:
11469 rtnl_unlock();
11470 return err;
11471 }
11472
11473 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11474 struct netlink_callback *cb)
11475 {
11476 struct cfg80211_registered_device *rdev;
11477 struct wireless_dev *wdev;
11478 unsigned int vcmd_idx;
11479 const struct wiphy_vendor_command *vcmd;
11480 void *data;
11481 int data_len;
11482 int err;
11483 struct nlattr *vendor_data;
11484
11485 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
11486 if (err)
11487 return err;
11488
11489 vcmd_idx = cb->args[2];
11490 data = (void *)cb->args[3];
11491 data_len = cb->args[4];
11492 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
11493
11494 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11495 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11496 if (!wdev)
11497 return -EINVAL;
11498 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11499 !wdev->netdev)
11500 return -EINVAL;
11501
11502 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11503 if (!wdev_running(wdev))
11504 return -ENETDOWN;
11505 }
11506 }
11507
11508 while (1) {
11509 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11510 cb->nlh->nlmsg_seq, NLM_F_MULTI,
11511 NL80211_CMD_VENDOR);
11512 if (!hdr)
11513 break;
11514
11515 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11516 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11517 wdev_id(wdev),
11518 NL80211_ATTR_PAD))) {
11519 genlmsg_cancel(skb, hdr);
11520 break;
11521 }
11522
11523 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
11524 if (!vendor_data) {
11525 genlmsg_cancel(skb, hdr);
11526 break;
11527 }
11528
11529 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
11530 (unsigned long *)&cb->args[5]);
11531 nla_nest_end(skb, vendor_data);
11532
11533 if (err == -ENOBUFS || err == -ENOENT) {
11534 genlmsg_cancel(skb, hdr);
11535 break;
11536 } else if (err) {
11537 genlmsg_cancel(skb, hdr);
11538 goto out;
11539 }
11540
11541 genlmsg_end(skb, hdr);
11542 }
11543
11544 err = skb->len;
11545 out:
11546 rtnl_unlock();
11547 return err;
11548 }
11549
11550 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
11551 enum nl80211_commands cmd,
11552 enum nl80211_attrs attr,
11553 int approxlen)
11554 {
11555 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11556
11557 if (WARN_ON(!rdev->cur_cmd_info))
11558 return NULL;
11559
11560 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
11561 rdev->cur_cmd_info->snd_portid,
11562 rdev->cur_cmd_info->snd_seq,
11563 cmd, attr, NULL, GFP_KERNEL);
11564 }
11565 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
11566
11567 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
11568 {
11569 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11570 void *hdr = ((void **)skb->cb)[1];
11571 struct nlattr *data = ((void **)skb->cb)[2];
11572
11573 /* clear CB data for netlink core to own from now on */
11574 memset(skb->cb, 0, sizeof(skb->cb));
11575
11576 if (WARN_ON(!rdev->cur_cmd_info)) {
11577 kfree_skb(skb);
11578 return -EINVAL;
11579 }
11580
11581 nla_nest_end(skb, data);
11582 genlmsg_end(skb, hdr);
11583 return genlmsg_reply(skb, rdev->cur_cmd_info);
11584 }
11585 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
11586
11587 static int nl80211_set_qos_map(struct sk_buff *skb,
11588 struct genl_info *info)
11589 {
11590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11591 struct cfg80211_qos_map *qos_map = NULL;
11592 struct net_device *dev = info->user_ptr[1];
11593 u8 *pos, len, num_des, des_len, des;
11594 int ret;
11595
11596 if (!rdev->ops->set_qos_map)
11597 return -EOPNOTSUPP;
11598
11599 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
11600 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
11601 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
11602
11603 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
11604 len > IEEE80211_QOS_MAP_LEN_MAX)
11605 return -EINVAL;
11606
11607 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
11608 if (!qos_map)
11609 return -ENOMEM;
11610
11611 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
11612 if (num_des) {
11613 des_len = num_des *
11614 sizeof(struct cfg80211_dscp_exception);
11615 memcpy(qos_map->dscp_exception, pos, des_len);
11616 qos_map->num_des = num_des;
11617 for (des = 0; des < num_des; des++) {
11618 if (qos_map->dscp_exception[des].up > 7) {
11619 kfree(qos_map);
11620 return -EINVAL;
11621 }
11622 }
11623 pos += des_len;
11624 }
11625 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
11626 }
11627
11628 wdev_lock(dev->ieee80211_ptr);
11629 ret = nl80211_key_allowed(dev->ieee80211_ptr);
11630 if (!ret)
11631 ret = rdev_set_qos_map(rdev, dev, qos_map);
11632 wdev_unlock(dev->ieee80211_ptr);
11633
11634 kfree(qos_map);
11635 return ret;
11636 }
11637
11638 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
11639 {
11640 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11641 struct net_device *dev = info->user_ptr[1];
11642 struct wireless_dev *wdev = dev->ieee80211_ptr;
11643 const u8 *peer;
11644 u8 tsid, up;
11645 u16 admitted_time = 0;
11646 int err;
11647
11648 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
11649 return -EOPNOTSUPP;
11650
11651 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
11652 !info->attrs[NL80211_ATTR_USER_PRIO])
11653 return -EINVAL;
11654
11655 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11656 if (tsid >= IEEE80211_NUM_TIDS)
11657 return -EINVAL;
11658
11659 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
11660 if (up >= IEEE80211_NUM_UPS)
11661 return -EINVAL;
11662
11663 /* WMM uses TIDs 0-7 even for TSPEC */
11664 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
11665 /* TODO: handle 802.11 TSPEC/admission control
11666 * need more attributes for that (e.g. BA session requirement);
11667 * change the WMM adminssion test above to allow both then
11668 */
11669 return -EINVAL;
11670 }
11671
11672 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11673
11674 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
11675 admitted_time =
11676 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
11677 if (!admitted_time)
11678 return -EINVAL;
11679 }
11680
11681 wdev_lock(wdev);
11682 switch (wdev->iftype) {
11683 case NL80211_IFTYPE_STATION:
11684 case NL80211_IFTYPE_P2P_CLIENT:
11685 if (wdev->current_bss)
11686 break;
11687 err = -ENOTCONN;
11688 goto out;
11689 default:
11690 err = -EOPNOTSUPP;
11691 goto out;
11692 }
11693
11694 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
11695
11696 out:
11697 wdev_unlock(wdev);
11698 return err;
11699 }
11700
11701 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
11702 {
11703 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11704 struct net_device *dev = info->user_ptr[1];
11705 struct wireless_dev *wdev = dev->ieee80211_ptr;
11706 const u8 *peer;
11707 u8 tsid;
11708 int err;
11709
11710 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
11711 return -EINVAL;
11712
11713 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
11714 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11715
11716 wdev_lock(wdev);
11717 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
11718 wdev_unlock(wdev);
11719
11720 return err;
11721 }
11722
11723 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
11724 struct genl_info *info)
11725 {
11726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11727 struct net_device *dev = info->user_ptr[1];
11728 struct wireless_dev *wdev = dev->ieee80211_ptr;
11729 struct cfg80211_chan_def chandef = {};
11730 const u8 *addr;
11731 u8 oper_class;
11732 int err;
11733
11734 if (!rdev->ops->tdls_channel_switch ||
11735 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11736 return -EOPNOTSUPP;
11737
11738 switch (dev->ieee80211_ptr->iftype) {
11739 case NL80211_IFTYPE_STATION:
11740 case NL80211_IFTYPE_P2P_CLIENT:
11741 break;
11742 default:
11743 return -EOPNOTSUPP;
11744 }
11745
11746 if (!info->attrs[NL80211_ATTR_MAC] ||
11747 !info->attrs[NL80211_ATTR_OPER_CLASS])
11748 return -EINVAL;
11749
11750 err = nl80211_parse_chandef(rdev, info, &chandef);
11751 if (err)
11752 return err;
11753
11754 /*
11755 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
11756 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
11757 * specification is not defined for them.
11758 */
11759 if (chandef.chan->band == NL80211_BAND_2GHZ &&
11760 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
11761 chandef.width != NL80211_CHAN_WIDTH_20)
11762 return -EINVAL;
11763
11764 /* we will be active on the TDLS link */
11765 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
11766 wdev->iftype))
11767 return -EINVAL;
11768
11769 /* don't allow switching to DFS channels */
11770 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
11771 return -EINVAL;
11772
11773 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11774 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
11775
11776 wdev_lock(wdev);
11777 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
11778 wdev_unlock(wdev);
11779
11780 return err;
11781 }
11782
11783 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
11784 struct genl_info *info)
11785 {
11786 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11787 struct net_device *dev = info->user_ptr[1];
11788 struct wireless_dev *wdev = dev->ieee80211_ptr;
11789 const u8 *addr;
11790
11791 if (!rdev->ops->tdls_channel_switch ||
11792 !rdev->ops->tdls_cancel_channel_switch ||
11793 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
11794 return -EOPNOTSUPP;
11795
11796 switch (dev->ieee80211_ptr->iftype) {
11797 case NL80211_IFTYPE_STATION:
11798 case NL80211_IFTYPE_P2P_CLIENT:
11799 break;
11800 default:
11801 return -EOPNOTSUPP;
11802 }
11803
11804 if (!info->attrs[NL80211_ATTR_MAC])
11805 return -EINVAL;
11806
11807 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11808
11809 wdev_lock(wdev);
11810 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
11811 wdev_unlock(wdev);
11812
11813 return 0;
11814 }
11815
11816 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
11817 struct genl_info *info)
11818 {
11819 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11820 struct net_device *dev = info->user_ptr[1];
11821 struct wireless_dev *wdev = dev->ieee80211_ptr;
11822 const struct nlattr *nla;
11823 bool enabled;
11824
11825 if (netif_running(dev))
11826 return -EBUSY;
11827
11828 if (!rdev->ops->set_multicast_to_unicast)
11829 return -EOPNOTSUPP;
11830
11831 if (wdev->iftype != NL80211_IFTYPE_AP &&
11832 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11833 return -EOPNOTSUPP;
11834
11835 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
11836 enabled = nla_get_flag(nla);
11837
11838 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
11839 }
11840
11841 #define NL80211_FLAG_NEED_WIPHY 0x01
11842 #define NL80211_FLAG_NEED_NETDEV 0x02
11843 #define NL80211_FLAG_NEED_RTNL 0x04
11844 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11845 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11846 NL80211_FLAG_CHECK_NETDEV_UP)
11847 #define NL80211_FLAG_NEED_WDEV 0x10
11848 /* If a netdev is associated, it must be UP, P2P must be started */
11849 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11850 NL80211_FLAG_CHECK_NETDEV_UP)
11851 #define NL80211_FLAG_CLEAR_SKB 0x20
11852
11853 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11854 struct genl_info *info)
11855 {
11856 struct cfg80211_registered_device *rdev;
11857 struct wireless_dev *wdev;
11858 struct net_device *dev;
11859 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11860
11861 if (rtnl)
11862 rtnl_lock();
11863
11864 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11865 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11866 if (IS_ERR(rdev)) {
11867 if (rtnl)
11868 rtnl_unlock();
11869 return PTR_ERR(rdev);
11870 }
11871 info->user_ptr[0] = rdev;
11872 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11873 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11874 ASSERT_RTNL();
11875
11876 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11877 info->attrs);
11878 if (IS_ERR(wdev)) {
11879 if (rtnl)
11880 rtnl_unlock();
11881 return PTR_ERR(wdev);
11882 }
11883
11884 dev = wdev->netdev;
11885 rdev = wiphy_to_rdev(wdev->wiphy);
11886
11887 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11888 if (!dev) {
11889 if (rtnl)
11890 rtnl_unlock();
11891 return -EINVAL;
11892 }
11893
11894 info->user_ptr[1] = dev;
11895 } else {
11896 info->user_ptr[1] = wdev;
11897 }
11898
11899 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11900 !wdev_running(wdev)) {
11901 if (rtnl)
11902 rtnl_unlock();
11903 return -ENETDOWN;
11904 }
11905
11906 if (dev)
11907 dev_hold(dev);
11908
11909 info->user_ptr[0] = rdev;
11910 }
11911
11912 return 0;
11913 }
11914
11915 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11916 struct genl_info *info)
11917 {
11918 if (info->user_ptr[1]) {
11919 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11920 struct wireless_dev *wdev = info->user_ptr[1];
11921
11922 if (wdev->netdev)
11923 dev_put(wdev->netdev);
11924 } else {
11925 dev_put(info->user_ptr[1]);
11926 }
11927 }
11928
11929 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11930 rtnl_unlock();
11931
11932 /* If needed, clear the netlink message payload from the SKB
11933 * as it might contain key data that shouldn't stick around on
11934 * the heap after the SKB is freed. The netlink message header
11935 * is still needed for further processing, so leave it intact.
11936 */
11937 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11938 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11939
11940 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11941 }
11942 }
11943
11944 static const struct genl_ops nl80211_ops[] = {
11945 {
11946 .cmd = NL80211_CMD_GET_WIPHY,
11947 .doit = nl80211_get_wiphy,
11948 .dumpit = nl80211_dump_wiphy,
11949 .done = nl80211_dump_wiphy_done,
11950 .policy = nl80211_policy,
11951 /* can be retrieved by unprivileged users */
11952 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11953 NL80211_FLAG_NEED_RTNL,
11954 },
11955 {
11956 .cmd = NL80211_CMD_SET_WIPHY,
11957 .doit = nl80211_set_wiphy,
11958 .policy = nl80211_policy,
11959 .flags = GENL_UNS_ADMIN_PERM,
11960 .internal_flags = NL80211_FLAG_NEED_RTNL,
11961 },
11962 {
11963 .cmd = NL80211_CMD_GET_INTERFACE,
11964 .doit = nl80211_get_interface,
11965 .dumpit = nl80211_dump_interface,
11966 .policy = nl80211_policy,
11967 /* can be retrieved by unprivileged users */
11968 .internal_flags = NL80211_FLAG_NEED_WDEV |
11969 NL80211_FLAG_NEED_RTNL,
11970 },
11971 {
11972 .cmd = NL80211_CMD_SET_INTERFACE,
11973 .doit = nl80211_set_interface,
11974 .policy = nl80211_policy,
11975 .flags = GENL_UNS_ADMIN_PERM,
11976 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11977 NL80211_FLAG_NEED_RTNL,
11978 },
11979 {
11980 .cmd = NL80211_CMD_NEW_INTERFACE,
11981 .doit = nl80211_new_interface,
11982 .policy = nl80211_policy,
11983 .flags = GENL_UNS_ADMIN_PERM,
11984 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11985 NL80211_FLAG_NEED_RTNL,
11986 },
11987 {
11988 .cmd = NL80211_CMD_DEL_INTERFACE,
11989 .doit = nl80211_del_interface,
11990 .policy = nl80211_policy,
11991 .flags = GENL_UNS_ADMIN_PERM,
11992 .internal_flags = NL80211_FLAG_NEED_WDEV |
11993 NL80211_FLAG_NEED_RTNL,
11994 },
11995 {
11996 .cmd = NL80211_CMD_GET_KEY,
11997 .doit = nl80211_get_key,
11998 .policy = nl80211_policy,
11999 .flags = GENL_UNS_ADMIN_PERM,
12000 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12001 NL80211_FLAG_NEED_RTNL,
12002 },
12003 {
12004 .cmd = NL80211_CMD_SET_KEY,
12005 .doit = nl80211_set_key,
12006 .policy = nl80211_policy,
12007 .flags = GENL_UNS_ADMIN_PERM,
12008 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12009 NL80211_FLAG_NEED_RTNL |
12010 NL80211_FLAG_CLEAR_SKB,
12011 },
12012 {
12013 .cmd = NL80211_CMD_NEW_KEY,
12014 .doit = nl80211_new_key,
12015 .policy = nl80211_policy,
12016 .flags = GENL_UNS_ADMIN_PERM,
12017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12018 NL80211_FLAG_NEED_RTNL |
12019 NL80211_FLAG_CLEAR_SKB,
12020 },
12021 {
12022 .cmd = NL80211_CMD_DEL_KEY,
12023 .doit = nl80211_del_key,
12024 .policy = nl80211_policy,
12025 .flags = GENL_UNS_ADMIN_PERM,
12026 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12027 NL80211_FLAG_NEED_RTNL,
12028 },
12029 {
12030 .cmd = NL80211_CMD_SET_BEACON,
12031 .policy = nl80211_policy,
12032 .flags = GENL_UNS_ADMIN_PERM,
12033 .doit = nl80211_set_beacon,
12034 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12035 NL80211_FLAG_NEED_RTNL,
12036 },
12037 {
12038 .cmd = NL80211_CMD_START_AP,
12039 .policy = nl80211_policy,
12040 .flags = GENL_UNS_ADMIN_PERM,
12041 .doit = nl80211_start_ap,
12042 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12043 NL80211_FLAG_NEED_RTNL,
12044 },
12045 {
12046 .cmd = NL80211_CMD_STOP_AP,
12047 .policy = nl80211_policy,
12048 .flags = GENL_UNS_ADMIN_PERM,
12049 .doit = nl80211_stop_ap,
12050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12051 NL80211_FLAG_NEED_RTNL,
12052 },
12053 {
12054 .cmd = NL80211_CMD_GET_STATION,
12055 .doit = nl80211_get_station,
12056 .dumpit = nl80211_dump_station,
12057 .policy = nl80211_policy,
12058 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12059 NL80211_FLAG_NEED_RTNL,
12060 },
12061 {
12062 .cmd = NL80211_CMD_SET_STATION,
12063 .doit = nl80211_set_station,
12064 .policy = nl80211_policy,
12065 .flags = GENL_UNS_ADMIN_PERM,
12066 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12067 NL80211_FLAG_NEED_RTNL,
12068 },
12069 {
12070 .cmd = NL80211_CMD_NEW_STATION,
12071 .doit = nl80211_new_station,
12072 .policy = nl80211_policy,
12073 .flags = GENL_UNS_ADMIN_PERM,
12074 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12075 NL80211_FLAG_NEED_RTNL,
12076 },
12077 {
12078 .cmd = NL80211_CMD_DEL_STATION,
12079 .doit = nl80211_del_station,
12080 .policy = nl80211_policy,
12081 .flags = GENL_UNS_ADMIN_PERM,
12082 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12083 NL80211_FLAG_NEED_RTNL,
12084 },
12085 {
12086 .cmd = NL80211_CMD_GET_MPATH,
12087 .doit = nl80211_get_mpath,
12088 .dumpit = nl80211_dump_mpath,
12089 .policy = nl80211_policy,
12090 .flags = GENL_UNS_ADMIN_PERM,
12091 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12092 NL80211_FLAG_NEED_RTNL,
12093 },
12094 {
12095 .cmd = NL80211_CMD_GET_MPP,
12096 .doit = nl80211_get_mpp,
12097 .dumpit = nl80211_dump_mpp,
12098 .policy = nl80211_policy,
12099 .flags = GENL_UNS_ADMIN_PERM,
12100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12101 NL80211_FLAG_NEED_RTNL,
12102 },
12103 {
12104 .cmd = NL80211_CMD_SET_MPATH,
12105 .doit = nl80211_set_mpath,
12106 .policy = nl80211_policy,
12107 .flags = GENL_UNS_ADMIN_PERM,
12108 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12109 NL80211_FLAG_NEED_RTNL,
12110 },
12111 {
12112 .cmd = NL80211_CMD_NEW_MPATH,
12113 .doit = nl80211_new_mpath,
12114 .policy = nl80211_policy,
12115 .flags = GENL_UNS_ADMIN_PERM,
12116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12117 NL80211_FLAG_NEED_RTNL,
12118 },
12119 {
12120 .cmd = NL80211_CMD_DEL_MPATH,
12121 .doit = nl80211_del_mpath,
12122 .policy = nl80211_policy,
12123 .flags = GENL_UNS_ADMIN_PERM,
12124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12125 NL80211_FLAG_NEED_RTNL,
12126 },
12127 {
12128 .cmd = NL80211_CMD_SET_BSS,
12129 .doit = nl80211_set_bss,
12130 .policy = nl80211_policy,
12131 .flags = GENL_UNS_ADMIN_PERM,
12132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12133 NL80211_FLAG_NEED_RTNL,
12134 },
12135 {
12136 .cmd = NL80211_CMD_GET_REG,
12137 .doit = nl80211_get_reg_do,
12138 .dumpit = nl80211_get_reg_dump,
12139 .policy = nl80211_policy,
12140 .internal_flags = NL80211_FLAG_NEED_RTNL,
12141 /* can be retrieved by unprivileged users */
12142 },
12143 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12144 {
12145 .cmd = NL80211_CMD_SET_REG,
12146 .doit = nl80211_set_reg,
12147 .policy = nl80211_policy,
12148 .flags = GENL_ADMIN_PERM,
12149 .internal_flags = NL80211_FLAG_NEED_RTNL,
12150 },
12151 #endif
12152 {
12153 .cmd = NL80211_CMD_REQ_SET_REG,
12154 .doit = nl80211_req_set_reg,
12155 .policy = nl80211_policy,
12156 .flags = GENL_ADMIN_PERM,
12157 },
12158 {
12159 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12160 .doit = nl80211_get_mesh_config,
12161 .policy = nl80211_policy,
12162 /* can be retrieved by unprivileged users */
12163 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12164 NL80211_FLAG_NEED_RTNL,
12165 },
12166 {
12167 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12168 .doit = nl80211_update_mesh_config,
12169 .policy = nl80211_policy,
12170 .flags = GENL_UNS_ADMIN_PERM,
12171 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12172 NL80211_FLAG_NEED_RTNL,
12173 },
12174 {
12175 .cmd = NL80211_CMD_TRIGGER_SCAN,
12176 .doit = nl80211_trigger_scan,
12177 .policy = nl80211_policy,
12178 .flags = GENL_UNS_ADMIN_PERM,
12179 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12180 NL80211_FLAG_NEED_RTNL,
12181 },
12182 {
12183 .cmd = NL80211_CMD_ABORT_SCAN,
12184 .doit = nl80211_abort_scan,
12185 .policy = nl80211_policy,
12186 .flags = GENL_UNS_ADMIN_PERM,
12187 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12188 NL80211_FLAG_NEED_RTNL,
12189 },
12190 {
12191 .cmd = NL80211_CMD_GET_SCAN,
12192 .policy = nl80211_policy,
12193 .dumpit = nl80211_dump_scan,
12194 },
12195 {
12196 .cmd = NL80211_CMD_START_SCHED_SCAN,
12197 .doit = nl80211_start_sched_scan,
12198 .policy = nl80211_policy,
12199 .flags = GENL_UNS_ADMIN_PERM,
12200 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12201 NL80211_FLAG_NEED_RTNL,
12202 },
12203 {
12204 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12205 .doit = nl80211_stop_sched_scan,
12206 .policy = nl80211_policy,
12207 .flags = GENL_UNS_ADMIN_PERM,
12208 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12209 NL80211_FLAG_NEED_RTNL,
12210 },
12211 {
12212 .cmd = NL80211_CMD_AUTHENTICATE,
12213 .doit = nl80211_authenticate,
12214 .policy = nl80211_policy,
12215 .flags = GENL_UNS_ADMIN_PERM,
12216 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12217 NL80211_FLAG_NEED_RTNL |
12218 NL80211_FLAG_CLEAR_SKB,
12219 },
12220 {
12221 .cmd = NL80211_CMD_ASSOCIATE,
12222 .doit = nl80211_associate,
12223 .policy = nl80211_policy,
12224 .flags = GENL_UNS_ADMIN_PERM,
12225 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12226 NL80211_FLAG_NEED_RTNL,
12227 },
12228 {
12229 .cmd = NL80211_CMD_DEAUTHENTICATE,
12230 .doit = nl80211_deauthenticate,
12231 .policy = nl80211_policy,
12232 .flags = GENL_UNS_ADMIN_PERM,
12233 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12234 NL80211_FLAG_NEED_RTNL,
12235 },
12236 {
12237 .cmd = NL80211_CMD_DISASSOCIATE,
12238 .doit = nl80211_disassociate,
12239 .policy = nl80211_policy,
12240 .flags = GENL_UNS_ADMIN_PERM,
12241 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12242 NL80211_FLAG_NEED_RTNL,
12243 },
12244 {
12245 .cmd = NL80211_CMD_JOIN_IBSS,
12246 .doit = nl80211_join_ibss,
12247 .policy = nl80211_policy,
12248 .flags = GENL_UNS_ADMIN_PERM,
12249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12250 NL80211_FLAG_NEED_RTNL,
12251 },
12252 {
12253 .cmd = NL80211_CMD_LEAVE_IBSS,
12254 .doit = nl80211_leave_ibss,
12255 .policy = nl80211_policy,
12256 .flags = GENL_UNS_ADMIN_PERM,
12257 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12258 NL80211_FLAG_NEED_RTNL,
12259 },
12260 #ifdef CONFIG_NL80211_TESTMODE
12261 {
12262 .cmd = NL80211_CMD_TESTMODE,
12263 .doit = nl80211_testmode_do,
12264 .dumpit = nl80211_testmode_dump,
12265 .policy = nl80211_policy,
12266 .flags = GENL_UNS_ADMIN_PERM,
12267 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12268 NL80211_FLAG_NEED_RTNL,
12269 },
12270 #endif
12271 {
12272 .cmd = NL80211_CMD_CONNECT,
12273 .doit = nl80211_connect,
12274 .policy = nl80211_policy,
12275 .flags = GENL_UNS_ADMIN_PERM,
12276 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12277 NL80211_FLAG_NEED_RTNL,
12278 },
12279 {
12280 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12281 .doit = nl80211_update_connect_params,
12282 .policy = nl80211_policy,
12283 .flags = GENL_ADMIN_PERM,
12284 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12285 NL80211_FLAG_NEED_RTNL,
12286 },
12287 {
12288 .cmd = NL80211_CMD_DISCONNECT,
12289 .doit = nl80211_disconnect,
12290 .policy = nl80211_policy,
12291 .flags = GENL_UNS_ADMIN_PERM,
12292 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12293 NL80211_FLAG_NEED_RTNL,
12294 },
12295 {
12296 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12297 .doit = nl80211_wiphy_netns,
12298 .policy = nl80211_policy,
12299 .flags = GENL_UNS_ADMIN_PERM,
12300 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12301 NL80211_FLAG_NEED_RTNL,
12302 },
12303 {
12304 .cmd = NL80211_CMD_GET_SURVEY,
12305 .policy = nl80211_policy,
12306 .dumpit = nl80211_dump_survey,
12307 },
12308 {
12309 .cmd = NL80211_CMD_SET_PMKSA,
12310 .doit = nl80211_setdel_pmksa,
12311 .policy = nl80211_policy,
12312 .flags = GENL_UNS_ADMIN_PERM,
12313 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12314 NL80211_FLAG_NEED_RTNL,
12315 },
12316 {
12317 .cmd = NL80211_CMD_DEL_PMKSA,
12318 .doit = nl80211_setdel_pmksa,
12319 .policy = nl80211_policy,
12320 .flags = GENL_UNS_ADMIN_PERM,
12321 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12322 NL80211_FLAG_NEED_RTNL,
12323 },
12324 {
12325 .cmd = NL80211_CMD_FLUSH_PMKSA,
12326 .doit = nl80211_flush_pmksa,
12327 .policy = nl80211_policy,
12328 .flags = GENL_UNS_ADMIN_PERM,
12329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12330 NL80211_FLAG_NEED_RTNL,
12331 },
12332 {
12333 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12334 .doit = nl80211_remain_on_channel,
12335 .policy = nl80211_policy,
12336 .flags = GENL_UNS_ADMIN_PERM,
12337 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12338 NL80211_FLAG_NEED_RTNL,
12339 },
12340 {
12341 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12342 .doit = nl80211_cancel_remain_on_channel,
12343 .policy = nl80211_policy,
12344 .flags = GENL_UNS_ADMIN_PERM,
12345 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12346 NL80211_FLAG_NEED_RTNL,
12347 },
12348 {
12349 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12350 .doit = nl80211_set_tx_bitrate_mask,
12351 .policy = nl80211_policy,
12352 .flags = GENL_UNS_ADMIN_PERM,
12353 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12354 NL80211_FLAG_NEED_RTNL,
12355 },
12356 {
12357 .cmd = NL80211_CMD_REGISTER_FRAME,
12358 .doit = nl80211_register_mgmt,
12359 .policy = nl80211_policy,
12360 .flags = GENL_UNS_ADMIN_PERM,
12361 .internal_flags = NL80211_FLAG_NEED_WDEV |
12362 NL80211_FLAG_NEED_RTNL,
12363 },
12364 {
12365 .cmd = NL80211_CMD_FRAME,
12366 .doit = nl80211_tx_mgmt,
12367 .policy = nl80211_policy,
12368 .flags = GENL_UNS_ADMIN_PERM,
12369 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12370 NL80211_FLAG_NEED_RTNL,
12371 },
12372 {
12373 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12374 .doit = nl80211_tx_mgmt_cancel_wait,
12375 .policy = nl80211_policy,
12376 .flags = GENL_UNS_ADMIN_PERM,
12377 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12378 NL80211_FLAG_NEED_RTNL,
12379 },
12380 {
12381 .cmd = NL80211_CMD_SET_POWER_SAVE,
12382 .doit = nl80211_set_power_save,
12383 .policy = nl80211_policy,
12384 .flags = GENL_UNS_ADMIN_PERM,
12385 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12386 NL80211_FLAG_NEED_RTNL,
12387 },
12388 {
12389 .cmd = NL80211_CMD_GET_POWER_SAVE,
12390 .doit = nl80211_get_power_save,
12391 .policy = nl80211_policy,
12392 /* can be retrieved by unprivileged users */
12393 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12394 NL80211_FLAG_NEED_RTNL,
12395 },
12396 {
12397 .cmd = NL80211_CMD_SET_CQM,
12398 .doit = nl80211_set_cqm,
12399 .policy = nl80211_policy,
12400 .flags = GENL_UNS_ADMIN_PERM,
12401 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12402 NL80211_FLAG_NEED_RTNL,
12403 },
12404 {
12405 .cmd = NL80211_CMD_SET_CHANNEL,
12406 .doit = nl80211_set_channel,
12407 .policy = nl80211_policy,
12408 .flags = GENL_UNS_ADMIN_PERM,
12409 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12410 NL80211_FLAG_NEED_RTNL,
12411 },
12412 {
12413 .cmd = NL80211_CMD_SET_WDS_PEER,
12414 .doit = nl80211_set_wds_peer,
12415 .policy = nl80211_policy,
12416 .flags = GENL_UNS_ADMIN_PERM,
12417 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12418 NL80211_FLAG_NEED_RTNL,
12419 },
12420 {
12421 .cmd = NL80211_CMD_JOIN_MESH,
12422 .doit = nl80211_join_mesh,
12423 .policy = nl80211_policy,
12424 .flags = GENL_UNS_ADMIN_PERM,
12425 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12426 NL80211_FLAG_NEED_RTNL,
12427 },
12428 {
12429 .cmd = NL80211_CMD_LEAVE_MESH,
12430 .doit = nl80211_leave_mesh,
12431 .policy = nl80211_policy,
12432 .flags = GENL_UNS_ADMIN_PERM,
12433 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12434 NL80211_FLAG_NEED_RTNL,
12435 },
12436 {
12437 .cmd = NL80211_CMD_JOIN_OCB,
12438 .doit = nl80211_join_ocb,
12439 .policy = nl80211_policy,
12440 .flags = GENL_UNS_ADMIN_PERM,
12441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12442 NL80211_FLAG_NEED_RTNL,
12443 },
12444 {
12445 .cmd = NL80211_CMD_LEAVE_OCB,
12446 .doit = nl80211_leave_ocb,
12447 .policy = nl80211_policy,
12448 .flags = GENL_UNS_ADMIN_PERM,
12449 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12450 NL80211_FLAG_NEED_RTNL,
12451 },
12452 #ifdef CONFIG_PM
12453 {
12454 .cmd = NL80211_CMD_GET_WOWLAN,
12455 .doit = nl80211_get_wowlan,
12456 .policy = nl80211_policy,
12457 /* can be retrieved by unprivileged users */
12458 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12459 NL80211_FLAG_NEED_RTNL,
12460 },
12461 {
12462 .cmd = NL80211_CMD_SET_WOWLAN,
12463 .doit = nl80211_set_wowlan,
12464 .policy = nl80211_policy,
12465 .flags = GENL_UNS_ADMIN_PERM,
12466 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12467 NL80211_FLAG_NEED_RTNL,
12468 },
12469 #endif
12470 {
12471 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
12472 .doit = nl80211_set_rekey_data,
12473 .policy = nl80211_policy,
12474 .flags = GENL_UNS_ADMIN_PERM,
12475 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12476 NL80211_FLAG_NEED_RTNL |
12477 NL80211_FLAG_CLEAR_SKB,
12478 },
12479 {
12480 .cmd = NL80211_CMD_TDLS_MGMT,
12481 .doit = nl80211_tdls_mgmt,
12482 .policy = nl80211_policy,
12483 .flags = GENL_UNS_ADMIN_PERM,
12484 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12485 NL80211_FLAG_NEED_RTNL,
12486 },
12487 {
12488 .cmd = NL80211_CMD_TDLS_OPER,
12489 .doit = nl80211_tdls_oper,
12490 .policy = nl80211_policy,
12491 .flags = GENL_UNS_ADMIN_PERM,
12492 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12493 NL80211_FLAG_NEED_RTNL,
12494 },
12495 {
12496 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
12497 .doit = nl80211_register_unexpected_frame,
12498 .policy = nl80211_policy,
12499 .flags = GENL_UNS_ADMIN_PERM,
12500 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12501 NL80211_FLAG_NEED_RTNL,
12502 },
12503 {
12504 .cmd = NL80211_CMD_PROBE_CLIENT,
12505 .doit = nl80211_probe_client,
12506 .policy = nl80211_policy,
12507 .flags = GENL_UNS_ADMIN_PERM,
12508 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12509 NL80211_FLAG_NEED_RTNL,
12510 },
12511 {
12512 .cmd = NL80211_CMD_REGISTER_BEACONS,
12513 .doit = nl80211_register_beacons,
12514 .policy = nl80211_policy,
12515 .flags = GENL_UNS_ADMIN_PERM,
12516 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12517 NL80211_FLAG_NEED_RTNL,
12518 },
12519 {
12520 .cmd = NL80211_CMD_SET_NOACK_MAP,
12521 .doit = nl80211_set_noack_map,
12522 .policy = nl80211_policy,
12523 .flags = GENL_UNS_ADMIN_PERM,
12524 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12525 NL80211_FLAG_NEED_RTNL,
12526 },
12527 {
12528 .cmd = NL80211_CMD_START_P2P_DEVICE,
12529 .doit = nl80211_start_p2p_device,
12530 .policy = nl80211_policy,
12531 .flags = GENL_UNS_ADMIN_PERM,
12532 .internal_flags = NL80211_FLAG_NEED_WDEV |
12533 NL80211_FLAG_NEED_RTNL,
12534 },
12535 {
12536 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
12537 .doit = nl80211_stop_p2p_device,
12538 .policy = nl80211_policy,
12539 .flags = GENL_UNS_ADMIN_PERM,
12540 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12541 NL80211_FLAG_NEED_RTNL,
12542 },
12543 {
12544 .cmd = NL80211_CMD_START_NAN,
12545 .doit = nl80211_start_nan,
12546 .policy = nl80211_policy,
12547 .flags = GENL_ADMIN_PERM,
12548 .internal_flags = NL80211_FLAG_NEED_WDEV |
12549 NL80211_FLAG_NEED_RTNL,
12550 },
12551 {
12552 .cmd = NL80211_CMD_STOP_NAN,
12553 .doit = nl80211_stop_nan,
12554 .policy = nl80211_policy,
12555 .flags = GENL_ADMIN_PERM,
12556 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12557 NL80211_FLAG_NEED_RTNL,
12558 },
12559 {
12560 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
12561 .doit = nl80211_nan_add_func,
12562 .policy = nl80211_policy,
12563 .flags = GENL_ADMIN_PERM,
12564 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12565 NL80211_FLAG_NEED_RTNL,
12566 },
12567 {
12568 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
12569 .doit = nl80211_nan_del_func,
12570 .policy = nl80211_policy,
12571 .flags = GENL_ADMIN_PERM,
12572 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12573 NL80211_FLAG_NEED_RTNL,
12574 },
12575 {
12576 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
12577 .doit = nl80211_nan_change_config,
12578 .policy = nl80211_policy,
12579 .flags = GENL_ADMIN_PERM,
12580 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12581 NL80211_FLAG_NEED_RTNL,
12582 },
12583 {
12584 .cmd = NL80211_CMD_SET_MCAST_RATE,
12585 .doit = nl80211_set_mcast_rate,
12586 .policy = nl80211_policy,
12587 .flags = GENL_UNS_ADMIN_PERM,
12588 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12589 NL80211_FLAG_NEED_RTNL,
12590 },
12591 {
12592 .cmd = NL80211_CMD_SET_MAC_ACL,
12593 .doit = nl80211_set_mac_acl,
12594 .policy = nl80211_policy,
12595 .flags = GENL_UNS_ADMIN_PERM,
12596 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12597 NL80211_FLAG_NEED_RTNL,
12598 },
12599 {
12600 .cmd = NL80211_CMD_RADAR_DETECT,
12601 .doit = nl80211_start_radar_detection,
12602 .policy = nl80211_policy,
12603 .flags = GENL_UNS_ADMIN_PERM,
12604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12605 NL80211_FLAG_NEED_RTNL,
12606 },
12607 {
12608 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
12609 .doit = nl80211_get_protocol_features,
12610 .policy = nl80211_policy,
12611 },
12612 {
12613 .cmd = NL80211_CMD_UPDATE_FT_IES,
12614 .doit = nl80211_update_ft_ies,
12615 .policy = nl80211_policy,
12616 .flags = GENL_UNS_ADMIN_PERM,
12617 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12618 NL80211_FLAG_NEED_RTNL,
12619 },
12620 {
12621 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
12622 .doit = nl80211_crit_protocol_start,
12623 .policy = nl80211_policy,
12624 .flags = GENL_UNS_ADMIN_PERM,
12625 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12626 NL80211_FLAG_NEED_RTNL,
12627 },
12628 {
12629 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
12630 .doit = nl80211_crit_protocol_stop,
12631 .policy = nl80211_policy,
12632 .flags = GENL_UNS_ADMIN_PERM,
12633 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12634 NL80211_FLAG_NEED_RTNL,
12635 },
12636 {
12637 .cmd = NL80211_CMD_GET_COALESCE,
12638 .doit = nl80211_get_coalesce,
12639 .policy = nl80211_policy,
12640 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12641 NL80211_FLAG_NEED_RTNL,
12642 },
12643 {
12644 .cmd = NL80211_CMD_SET_COALESCE,
12645 .doit = nl80211_set_coalesce,
12646 .policy = nl80211_policy,
12647 .flags = GENL_UNS_ADMIN_PERM,
12648 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12649 NL80211_FLAG_NEED_RTNL,
12650 },
12651 {
12652 .cmd = NL80211_CMD_CHANNEL_SWITCH,
12653 .doit = nl80211_channel_switch,
12654 .policy = nl80211_policy,
12655 .flags = GENL_UNS_ADMIN_PERM,
12656 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12657 NL80211_FLAG_NEED_RTNL,
12658 },
12659 {
12660 .cmd = NL80211_CMD_VENDOR,
12661 .doit = nl80211_vendor_cmd,
12662 .dumpit = nl80211_vendor_cmd_dump,
12663 .policy = nl80211_policy,
12664 .flags = GENL_UNS_ADMIN_PERM,
12665 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12666 NL80211_FLAG_NEED_RTNL,
12667 },
12668 {
12669 .cmd = NL80211_CMD_SET_QOS_MAP,
12670 .doit = nl80211_set_qos_map,
12671 .policy = nl80211_policy,
12672 .flags = GENL_UNS_ADMIN_PERM,
12673 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12674 NL80211_FLAG_NEED_RTNL,
12675 },
12676 {
12677 .cmd = NL80211_CMD_ADD_TX_TS,
12678 .doit = nl80211_add_tx_ts,
12679 .policy = nl80211_policy,
12680 .flags = GENL_UNS_ADMIN_PERM,
12681 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12682 NL80211_FLAG_NEED_RTNL,
12683 },
12684 {
12685 .cmd = NL80211_CMD_DEL_TX_TS,
12686 .doit = nl80211_del_tx_ts,
12687 .policy = nl80211_policy,
12688 .flags = GENL_UNS_ADMIN_PERM,
12689 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12690 NL80211_FLAG_NEED_RTNL,
12691 },
12692 {
12693 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
12694 .doit = nl80211_tdls_channel_switch,
12695 .policy = nl80211_policy,
12696 .flags = GENL_UNS_ADMIN_PERM,
12697 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12698 NL80211_FLAG_NEED_RTNL,
12699 },
12700 {
12701 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
12702 .doit = nl80211_tdls_cancel_channel_switch,
12703 .policy = nl80211_policy,
12704 .flags = GENL_UNS_ADMIN_PERM,
12705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12706 NL80211_FLAG_NEED_RTNL,
12707 },
12708 {
12709 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
12710 .doit = nl80211_set_multicast_to_unicast,
12711 .policy = nl80211_policy,
12712 .flags = GENL_UNS_ADMIN_PERM,
12713 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12714 NL80211_FLAG_NEED_RTNL,
12715 },
12716 };
12717
12718 static struct genl_family nl80211_fam __ro_after_init = {
12719 .name = NL80211_GENL_NAME, /* have users key off the name instead */
12720 .hdrsize = 0, /* no private header */
12721 .version = 1, /* no particular meaning now */
12722 .maxattr = NL80211_ATTR_MAX,
12723 .netnsok = true,
12724 .pre_doit = nl80211_pre_doit,
12725 .post_doit = nl80211_post_doit,
12726 .module = THIS_MODULE,
12727 .ops = nl80211_ops,
12728 .n_ops = ARRAY_SIZE(nl80211_ops),
12729 .mcgrps = nl80211_mcgrps,
12730 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
12731 };
12732
12733 /* notification functions */
12734
12735 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
12736 enum nl80211_commands cmd)
12737 {
12738 struct sk_buff *msg;
12739 struct nl80211_dump_wiphy_state state = {};
12740
12741 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
12742 cmd != NL80211_CMD_DEL_WIPHY);
12743
12744 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12745 if (!msg)
12746 return;
12747
12748 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
12749 nlmsg_free(msg);
12750 return;
12751 }
12752
12753 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12754 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12755 }
12756
12757 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
12758 struct wireless_dev *wdev,
12759 enum nl80211_commands cmd)
12760 {
12761 struct sk_buff *msg;
12762
12763 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
12764 cmd != NL80211_CMD_DEL_INTERFACE);
12765
12766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12767 if (!msg)
12768 return;
12769
12770 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
12771 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
12772 nlmsg_free(msg);
12773 return;
12774 }
12775
12776 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12777 NL80211_MCGRP_CONFIG, GFP_KERNEL);
12778 }
12779
12780 static int nl80211_add_scan_req(struct sk_buff *msg,
12781 struct cfg80211_registered_device *rdev)
12782 {
12783 struct cfg80211_scan_request *req = rdev->scan_req;
12784 struct nlattr *nest;
12785 int i;
12786
12787 if (WARN_ON(!req))
12788 return 0;
12789
12790 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
12791 if (!nest)
12792 goto nla_put_failure;
12793 for (i = 0; i < req->n_ssids; i++) {
12794 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
12795 goto nla_put_failure;
12796 }
12797 nla_nest_end(msg, nest);
12798
12799 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12800 if (!nest)
12801 goto nla_put_failure;
12802 for (i = 0; i < req->n_channels; i++) {
12803 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12804 goto nla_put_failure;
12805 }
12806 nla_nest_end(msg, nest);
12807
12808 if (req->ie &&
12809 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
12810 goto nla_put_failure;
12811
12812 if (req->flags &&
12813 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
12814 goto nla_put_failure;
12815
12816 if (req->info.scan_start_tsf &&
12817 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
12818 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
12819 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
12820 req->info.tsf_bssid)))
12821 goto nla_put_failure;
12822
12823 return 0;
12824 nla_put_failure:
12825 return -ENOBUFS;
12826 }
12827
12828 static int nl80211_send_scan_msg(struct sk_buff *msg,
12829 struct cfg80211_registered_device *rdev,
12830 struct wireless_dev *wdev,
12831 u32 portid, u32 seq, int flags,
12832 u32 cmd)
12833 {
12834 void *hdr;
12835
12836 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12837 if (!hdr)
12838 return -1;
12839
12840 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12841 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12842 wdev->netdev->ifindex)) ||
12843 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12844 NL80211_ATTR_PAD))
12845 goto nla_put_failure;
12846
12847 /* ignore errors and send incomplete event anyway */
12848 nl80211_add_scan_req(msg, rdev);
12849
12850 genlmsg_end(msg, hdr);
12851 return 0;
12852
12853 nla_put_failure:
12854 genlmsg_cancel(msg, hdr);
12855 return -EMSGSIZE;
12856 }
12857
12858 static int
12859 nl80211_send_sched_scan_msg(struct sk_buff *msg,
12860 struct cfg80211_registered_device *rdev,
12861 struct net_device *netdev,
12862 u32 portid, u32 seq, int flags, u32 cmd)
12863 {
12864 void *hdr;
12865
12866 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
12867 if (!hdr)
12868 return -1;
12869
12870 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12871 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12872 goto nla_put_failure;
12873
12874 genlmsg_end(msg, hdr);
12875 return 0;
12876
12877 nla_put_failure:
12878 genlmsg_cancel(msg, hdr);
12879 return -EMSGSIZE;
12880 }
12881
12882 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
12883 struct wireless_dev *wdev)
12884 {
12885 struct sk_buff *msg;
12886
12887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12888 if (!msg)
12889 return;
12890
12891 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12892 NL80211_CMD_TRIGGER_SCAN) < 0) {
12893 nlmsg_free(msg);
12894 return;
12895 }
12896
12897 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12898 NL80211_MCGRP_SCAN, GFP_KERNEL);
12899 }
12900
12901 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
12902 struct wireless_dev *wdev, bool aborted)
12903 {
12904 struct sk_buff *msg;
12905
12906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12907 if (!msg)
12908 return NULL;
12909
12910 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
12911 aborted ? NL80211_CMD_SCAN_ABORTED :
12912 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
12913 nlmsg_free(msg);
12914 return NULL;
12915 }
12916
12917 return msg;
12918 }
12919
12920 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
12921 struct sk_buff *msg)
12922 {
12923 if (!msg)
12924 return;
12925
12926 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12927 NL80211_MCGRP_SCAN, GFP_KERNEL);
12928 }
12929
12930 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12931 struct net_device *netdev)
12932 {
12933 struct sk_buff *msg;
12934
12935 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12936 if (!msg)
12937 return;
12938
12939 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12940 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12941 nlmsg_free(msg);
12942 return;
12943 }
12944
12945 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12946 NL80211_MCGRP_SCAN, GFP_KERNEL);
12947 }
12948
12949 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12950 struct net_device *netdev, u32 cmd)
12951 {
12952 struct sk_buff *msg;
12953
12954 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12955 if (!msg)
12956 return;
12957
12958 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12959 nlmsg_free(msg);
12960 return;
12961 }
12962
12963 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12964 NL80211_MCGRP_SCAN, GFP_KERNEL);
12965 }
12966
12967 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12968 struct regulatory_request *request)
12969 {
12970 /* Userspace can always count this one always being set */
12971 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12972 goto nla_put_failure;
12973
12974 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12975 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12976 NL80211_REGDOM_TYPE_WORLD))
12977 goto nla_put_failure;
12978 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12979 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12980 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12981 goto nla_put_failure;
12982 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12983 request->intersect) {
12984 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12985 NL80211_REGDOM_TYPE_INTERSECTION))
12986 goto nla_put_failure;
12987 } else {
12988 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12989 NL80211_REGDOM_TYPE_COUNTRY) ||
12990 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12991 request->alpha2))
12992 goto nla_put_failure;
12993 }
12994
12995 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12996 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12997
12998 if (wiphy &&
12999 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13000 goto nla_put_failure;
13001
13002 if (wiphy &&
13003 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13004 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13005 goto nla_put_failure;
13006 }
13007
13008 return true;
13009
13010 nla_put_failure:
13011 return false;
13012 }
13013
13014 /*
13015 * This can happen on global regulatory changes or device specific settings
13016 * based on custom regulatory domains.
13017 */
13018 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13019 struct regulatory_request *request)
13020 {
13021 struct sk_buff *msg;
13022 void *hdr;
13023
13024 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13025 if (!msg)
13026 return;
13027
13028 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13029 if (!hdr) {
13030 nlmsg_free(msg);
13031 return;
13032 }
13033
13034 if (nl80211_reg_change_event_fill(msg, request) == false)
13035 goto nla_put_failure;
13036
13037 genlmsg_end(msg, hdr);
13038
13039 rcu_read_lock();
13040 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13041 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13042 rcu_read_unlock();
13043
13044 return;
13045
13046 nla_put_failure:
13047 genlmsg_cancel(msg, hdr);
13048 nlmsg_free(msg);
13049 }
13050
13051 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13052 struct net_device *netdev,
13053 const u8 *buf, size_t len,
13054 enum nl80211_commands cmd, gfp_t gfp,
13055 int uapsd_queues)
13056 {
13057 struct sk_buff *msg;
13058 void *hdr;
13059
13060 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13061 if (!msg)
13062 return;
13063
13064 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13065 if (!hdr) {
13066 nlmsg_free(msg);
13067 return;
13068 }
13069
13070 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13071 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13072 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13073 goto nla_put_failure;
13074
13075 if (uapsd_queues >= 0) {
13076 struct nlattr *nla_wmm =
13077 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13078 if (!nla_wmm)
13079 goto nla_put_failure;
13080
13081 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13082 uapsd_queues))
13083 goto nla_put_failure;
13084
13085 nla_nest_end(msg, nla_wmm);
13086 }
13087
13088 genlmsg_end(msg, hdr);
13089
13090 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13091 NL80211_MCGRP_MLME, gfp);
13092 return;
13093
13094 nla_put_failure:
13095 genlmsg_cancel(msg, hdr);
13096 nlmsg_free(msg);
13097 }
13098
13099 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13100 struct net_device *netdev, const u8 *buf,
13101 size_t len, gfp_t gfp)
13102 {
13103 nl80211_send_mlme_event(rdev, netdev, buf, len,
13104 NL80211_CMD_AUTHENTICATE, gfp, -1);
13105 }
13106
13107 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13108 struct net_device *netdev, const u8 *buf,
13109 size_t len, gfp_t gfp, int uapsd_queues)
13110 {
13111 nl80211_send_mlme_event(rdev, netdev, buf, len,
13112 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13113 }
13114
13115 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13116 struct net_device *netdev, const u8 *buf,
13117 size_t len, gfp_t gfp)
13118 {
13119 nl80211_send_mlme_event(rdev, netdev, buf, len,
13120 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13121 }
13122
13123 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13124 struct net_device *netdev, const u8 *buf,
13125 size_t len, gfp_t gfp)
13126 {
13127 nl80211_send_mlme_event(rdev, netdev, buf, len,
13128 NL80211_CMD_DISASSOCIATE, gfp, -1);
13129 }
13130
13131 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13132 size_t len)
13133 {
13134 struct wireless_dev *wdev = dev->ieee80211_ptr;
13135 struct wiphy *wiphy = wdev->wiphy;
13136 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13137 const struct ieee80211_mgmt *mgmt = (void *)buf;
13138 u32 cmd;
13139
13140 if (WARN_ON(len < 2))
13141 return;
13142
13143 if (ieee80211_is_deauth(mgmt->frame_control))
13144 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13145 else
13146 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13147
13148 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13149 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13150 }
13151 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13152
13153 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13154 struct net_device *netdev, int cmd,
13155 const u8 *addr, gfp_t gfp)
13156 {
13157 struct sk_buff *msg;
13158 void *hdr;
13159
13160 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13161 if (!msg)
13162 return;
13163
13164 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13165 if (!hdr) {
13166 nlmsg_free(msg);
13167 return;
13168 }
13169
13170 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13171 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13172 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13173 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13174 goto nla_put_failure;
13175
13176 genlmsg_end(msg, hdr);
13177
13178 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13179 NL80211_MCGRP_MLME, gfp);
13180 return;
13181
13182 nla_put_failure:
13183 genlmsg_cancel(msg, hdr);
13184 nlmsg_free(msg);
13185 }
13186
13187 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13188 struct net_device *netdev, const u8 *addr,
13189 gfp_t gfp)
13190 {
13191 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13192 addr, gfp);
13193 }
13194
13195 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13196 struct net_device *netdev, const u8 *addr,
13197 gfp_t gfp)
13198 {
13199 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13200 addr, gfp);
13201 }
13202
13203 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13204 struct net_device *netdev, const u8 *bssid,
13205 const u8 *req_ie, size_t req_ie_len,
13206 const u8 *resp_ie, size_t resp_ie_len,
13207 int status, gfp_t gfp)
13208 {
13209 struct sk_buff *msg;
13210 void *hdr;
13211
13212 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13213 if (!msg)
13214 return;
13215
13216 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13217 if (!hdr) {
13218 nlmsg_free(msg);
13219 return;
13220 }
13221
13222 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13223 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13224 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
13225 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13226 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13227 status) ||
13228 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
13229 (req_ie &&
13230 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13231 (resp_ie &&
13232 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13233 goto nla_put_failure;
13234
13235 genlmsg_end(msg, hdr);
13236
13237 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13238 NL80211_MCGRP_MLME, gfp);
13239 return;
13240
13241 nla_put_failure:
13242 genlmsg_cancel(msg, hdr);
13243 nlmsg_free(msg);
13244 }
13245
13246 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13247 struct net_device *netdev, const u8 *bssid,
13248 const u8 *req_ie, size_t req_ie_len,
13249 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
13250 {
13251 struct sk_buff *msg;
13252 void *hdr;
13253
13254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13255 if (!msg)
13256 return;
13257
13258 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13259 if (!hdr) {
13260 nlmsg_free(msg);
13261 return;
13262 }
13263
13264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13265 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13266 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13267 (req_ie &&
13268 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
13269 (resp_ie &&
13270 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
13271 goto nla_put_failure;
13272
13273 genlmsg_end(msg, hdr);
13274
13275 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13276 NL80211_MCGRP_MLME, gfp);
13277 return;
13278
13279 nla_put_failure:
13280 genlmsg_cancel(msg, hdr);
13281 nlmsg_free(msg);
13282 }
13283
13284 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13285 struct net_device *netdev, u16 reason,
13286 const u8 *ie, size_t ie_len, bool from_ap)
13287 {
13288 struct sk_buff *msg;
13289 void *hdr;
13290
13291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13292 if (!msg)
13293 return;
13294
13295 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13296 if (!hdr) {
13297 nlmsg_free(msg);
13298 return;
13299 }
13300
13301 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13302 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13303 (from_ap && reason &&
13304 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13305 (from_ap &&
13306 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13307 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13308 goto nla_put_failure;
13309
13310 genlmsg_end(msg, hdr);
13311
13312 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13313 NL80211_MCGRP_MLME, GFP_KERNEL);
13314 return;
13315
13316 nla_put_failure:
13317 genlmsg_cancel(msg, hdr);
13318 nlmsg_free(msg);
13319 }
13320
13321 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13322 struct net_device *netdev, const u8 *bssid,
13323 gfp_t gfp)
13324 {
13325 struct sk_buff *msg;
13326 void *hdr;
13327
13328 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13329 if (!msg)
13330 return;
13331
13332 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13333 if (!hdr) {
13334 nlmsg_free(msg);
13335 return;
13336 }
13337
13338 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13339 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13340 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13341 goto nla_put_failure;
13342
13343 genlmsg_end(msg, hdr);
13344
13345 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13346 NL80211_MCGRP_MLME, gfp);
13347 return;
13348
13349 nla_put_failure:
13350 genlmsg_cancel(msg, hdr);
13351 nlmsg_free(msg);
13352 }
13353
13354 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
13355 const u8* ie, u8 ie_len, gfp_t gfp)
13356 {
13357 struct wireless_dev *wdev = dev->ieee80211_ptr;
13358 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13359 struct sk_buff *msg;
13360 void *hdr;
13361
13362 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
13363 return;
13364
13365 trace_cfg80211_notify_new_peer_candidate(dev, addr);
13366
13367 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13368 if (!msg)
13369 return;
13370
13371 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
13372 if (!hdr) {
13373 nlmsg_free(msg);
13374 return;
13375 }
13376
13377 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13378 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13379 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13380 (ie_len && ie &&
13381 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
13382 goto nla_put_failure;
13383
13384 genlmsg_end(msg, hdr);
13385
13386 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13387 NL80211_MCGRP_MLME, gfp);
13388 return;
13389
13390 nla_put_failure:
13391 genlmsg_cancel(msg, hdr);
13392 nlmsg_free(msg);
13393 }
13394 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
13395
13396 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
13397 struct net_device *netdev, const u8 *addr,
13398 enum nl80211_key_type key_type, int key_id,
13399 const u8 *tsc, gfp_t gfp)
13400 {
13401 struct sk_buff *msg;
13402 void *hdr;
13403
13404 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13405 if (!msg)
13406 return;
13407
13408 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
13409 if (!hdr) {
13410 nlmsg_free(msg);
13411 return;
13412 }
13413
13414 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13415 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13416 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
13417 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
13418 (key_id != -1 &&
13419 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
13420 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
13421 goto nla_put_failure;
13422
13423 genlmsg_end(msg, hdr);
13424
13425 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13426 NL80211_MCGRP_MLME, gfp);
13427 return;
13428
13429 nla_put_failure:
13430 genlmsg_cancel(msg, hdr);
13431 nlmsg_free(msg);
13432 }
13433
13434 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
13435 struct ieee80211_channel *channel_before,
13436 struct ieee80211_channel *channel_after)
13437 {
13438 struct sk_buff *msg;
13439 void *hdr;
13440 struct nlattr *nl_freq;
13441
13442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
13443 if (!msg)
13444 return;
13445
13446 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
13447 if (!hdr) {
13448 nlmsg_free(msg);
13449 return;
13450 }
13451
13452 /*
13453 * Since we are applying the beacon hint to a wiphy we know its
13454 * wiphy_idx is valid
13455 */
13456 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
13457 goto nla_put_failure;
13458
13459 /* Before */
13460 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
13461 if (!nl_freq)
13462 goto nla_put_failure;
13463 if (nl80211_msg_put_channel(msg, channel_before, false))
13464 goto nla_put_failure;
13465 nla_nest_end(msg, nl_freq);
13466
13467 /* After */
13468 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
13469 if (!nl_freq)
13470 goto nla_put_failure;
13471 if (nl80211_msg_put_channel(msg, channel_after, false))
13472 goto nla_put_failure;
13473 nla_nest_end(msg, nl_freq);
13474
13475 genlmsg_end(msg, hdr);
13476
13477 rcu_read_lock();
13478 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13479 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13480 rcu_read_unlock();
13481
13482 return;
13483
13484 nla_put_failure:
13485 genlmsg_cancel(msg, hdr);
13486 nlmsg_free(msg);
13487 }
13488
13489 static void nl80211_send_remain_on_chan_event(
13490 int cmd, struct cfg80211_registered_device *rdev,
13491 struct wireless_dev *wdev, u64 cookie,
13492 struct ieee80211_channel *chan,
13493 unsigned int duration, gfp_t gfp)
13494 {
13495 struct sk_buff *msg;
13496 void *hdr;
13497
13498 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13499 if (!msg)
13500 return;
13501
13502 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13503 if (!hdr) {
13504 nlmsg_free(msg);
13505 return;
13506 }
13507
13508 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13509 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13510 wdev->netdev->ifindex)) ||
13511 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13512 NL80211_ATTR_PAD) ||
13513 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
13514 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
13515 NL80211_CHAN_NO_HT) ||
13516 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13517 NL80211_ATTR_PAD))
13518 goto nla_put_failure;
13519
13520 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
13521 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
13522 goto nla_put_failure;
13523
13524 genlmsg_end(msg, hdr);
13525
13526 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13527 NL80211_MCGRP_MLME, gfp);
13528 return;
13529
13530 nla_put_failure:
13531 genlmsg_cancel(msg, hdr);
13532 nlmsg_free(msg);
13533 }
13534
13535 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
13536 struct ieee80211_channel *chan,
13537 unsigned int duration, 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(wdev, cookie, chan, duration);
13543 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
13544 rdev, wdev, cookie, chan,
13545 duration, gfp);
13546 }
13547 EXPORT_SYMBOL(cfg80211_ready_on_channel);
13548
13549 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
13550 struct ieee80211_channel *chan,
13551 gfp_t gfp)
13552 {
13553 struct wiphy *wiphy = wdev->wiphy;
13554 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13555
13556 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
13557 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
13558 rdev, wdev, cookie, chan, 0, gfp);
13559 }
13560 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
13561
13562 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
13563 struct station_info *sinfo, gfp_t gfp)
13564 {
13565 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13566 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13567 struct sk_buff *msg;
13568
13569 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
13570
13571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13572 if (!msg)
13573 return;
13574
13575 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
13576 rdev, dev, mac_addr, sinfo) < 0) {
13577 nlmsg_free(msg);
13578 return;
13579 }
13580
13581 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13582 NL80211_MCGRP_MLME, gfp);
13583 }
13584 EXPORT_SYMBOL(cfg80211_new_sta);
13585
13586 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
13587 struct station_info *sinfo, gfp_t gfp)
13588 {
13589 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13590 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13591 struct sk_buff *msg;
13592 struct station_info empty_sinfo = {};
13593
13594 if (!sinfo)
13595 sinfo = &empty_sinfo;
13596
13597 trace_cfg80211_del_sta(dev, mac_addr);
13598
13599 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13600 if (!msg)
13601 return;
13602
13603 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
13604 rdev, dev, mac_addr, sinfo) < 0) {
13605 nlmsg_free(msg);
13606 return;
13607 }
13608
13609 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13610 NL80211_MCGRP_MLME, gfp);
13611 }
13612 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
13613
13614 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
13615 enum nl80211_connect_failed_reason reason,
13616 gfp_t gfp)
13617 {
13618 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
13619 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13620 struct sk_buff *msg;
13621 void *hdr;
13622
13623 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
13624 if (!msg)
13625 return;
13626
13627 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
13628 if (!hdr) {
13629 nlmsg_free(msg);
13630 return;
13631 }
13632
13633 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13634 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
13635 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
13636 goto nla_put_failure;
13637
13638 genlmsg_end(msg, hdr);
13639
13640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13641 NL80211_MCGRP_MLME, gfp);
13642 return;
13643
13644 nla_put_failure:
13645 genlmsg_cancel(msg, hdr);
13646 nlmsg_free(msg);
13647 }
13648 EXPORT_SYMBOL(cfg80211_conn_failed);
13649
13650 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
13651 const u8 *addr, gfp_t gfp)
13652 {
13653 struct wireless_dev *wdev = dev->ieee80211_ptr;
13654 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13655 struct sk_buff *msg;
13656 void *hdr;
13657 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
13658
13659 if (!nlportid)
13660 return false;
13661
13662 msg = nlmsg_new(100, gfp);
13663 if (!msg)
13664 return true;
13665
13666 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13667 if (!hdr) {
13668 nlmsg_free(msg);
13669 return true;
13670 }
13671
13672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13673 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13674 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13675 goto nla_put_failure;
13676
13677 genlmsg_end(msg, hdr);
13678 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13679 return true;
13680
13681 nla_put_failure:
13682 genlmsg_cancel(msg, hdr);
13683 nlmsg_free(msg);
13684 return true;
13685 }
13686
13687 bool cfg80211_rx_spurious_frame(struct net_device *dev,
13688 const u8 *addr, gfp_t gfp)
13689 {
13690 struct wireless_dev *wdev = dev->ieee80211_ptr;
13691 bool ret;
13692
13693 trace_cfg80211_rx_spurious_frame(dev, addr);
13694
13695 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13696 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
13697 trace_cfg80211_return_bool(false);
13698 return false;
13699 }
13700 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
13701 addr, gfp);
13702 trace_cfg80211_return_bool(ret);
13703 return ret;
13704 }
13705 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
13706
13707 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
13708 const u8 *addr, gfp_t gfp)
13709 {
13710 struct wireless_dev *wdev = dev->ieee80211_ptr;
13711 bool ret;
13712
13713 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
13714
13715 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
13716 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
13717 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
13718 trace_cfg80211_return_bool(false);
13719 return false;
13720 }
13721 ret = __nl80211_unexpected_frame(dev,
13722 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
13723 addr, gfp);
13724 trace_cfg80211_return_bool(ret);
13725 return ret;
13726 }
13727 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
13728
13729 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
13730 struct wireless_dev *wdev, u32 nlportid,
13731 int freq, int sig_dbm,
13732 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
13733 {
13734 struct net_device *netdev = wdev->netdev;
13735 struct sk_buff *msg;
13736 void *hdr;
13737
13738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13739 if (!msg)
13740 return -ENOMEM;
13741
13742 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13743 if (!hdr) {
13744 nlmsg_free(msg);
13745 return -ENOMEM;
13746 }
13747
13748 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13749 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13750 netdev->ifindex)) ||
13751 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13752 NL80211_ATTR_PAD) ||
13753 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
13754 (sig_dbm &&
13755 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13756 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13757 (flags &&
13758 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
13759 goto nla_put_failure;
13760
13761 genlmsg_end(msg, hdr);
13762
13763 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13764
13765 nla_put_failure:
13766 genlmsg_cancel(msg, hdr);
13767 nlmsg_free(msg);
13768 return -ENOBUFS;
13769 }
13770
13771 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
13772 const u8 *buf, size_t len, bool ack, gfp_t gfp)
13773 {
13774 struct wiphy *wiphy = wdev->wiphy;
13775 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13776 struct net_device *netdev = wdev->netdev;
13777 struct sk_buff *msg;
13778 void *hdr;
13779
13780 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
13781
13782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13783 if (!msg)
13784 return;
13785
13786 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
13787 if (!hdr) {
13788 nlmsg_free(msg);
13789 return;
13790 }
13791
13792 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13793 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13794 netdev->ifindex)) ||
13795 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13796 NL80211_ATTR_PAD) ||
13797 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
13798 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13799 NL80211_ATTR_PAD) ||
13800 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
13801 goto nla_put_failure;
13802
13803 genlmsg_end(msg, hdr);
13804
13805 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13806 NL80211_MCGRP_MLME, gfp);
13807 return;
13808
13809 nla_put_failure:
13810 genlmsg_cancel(msg, hdr);
13811 nlmsg_free(msg);
13812 }
13813 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
13814
13815 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
13816 const char *mac, gfp_t gfp)
13817 {
13818 struct wireless_dev *wdev = dev->ieee80211_ptr;
13819 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13820 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13821 void **cb;
13822
13823 if (!msg)
13824 return NULL;
13825
13826 cb = (void **)msg->cb;
13827
13828 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
13829 if (!cb[0]) {
13830 nlmsg_free(msg);
13831 return NULL;
13832 }
13833
13834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13835 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13836 goto nla_put_failure;
13837
13838 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
13839 goto nla_put_failure;
13840
13841 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
13842 if (!cb[1])
13843 goto nla_put_failure;
13844
13845 cb[2] = rdev;
13846
13847 return msg;
13848 nla_put_failure:
13849 nlmsg_free(msg);
13850 return NULL;
13851 }
13852
13853 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
13854 {
13855 void **cb = (void **)msg->cb;
13856 struct cfg80211_registered_device *rdev = cb[2];
13857
13858 nla_nest_end(msg, cb[1]);
13859 genlmsg_end(msg, cb[0]);
13860
13861 memset(msg->cb, 0, sizeof(msg->cb));
13862
13863 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13864 NL80211_MCGRP_MLME, gfp);
13865 }
13866
13867 void cfg80211_cqm_rssi_notify(struct net_device *dev,
13868 enum nl80211_cqm_rssi_threshold_event rssi_event,
13869 gfp_t gfp)
13870 {
13871 struct sk_buff *msg;
13872
13873 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
13874
13875 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
13876 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
13877 return;
13878
13879 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13880 if (!msg)
13881 return;
13882
13883 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
13884 rssi_event))
13885 goto nla_put_failure;
13886
13887 cfg80211_send_cqm(msg, gfp);
13888
13889 return;
13890
13891 nla_put_failure:
13892 nlmsg_free(msg);
13893 }
13894 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
13895
13896 void cfg80211_cqm_txe_notify(struct net_device *dev,
13897 const u8 *peer, u32 num_packets,
13898 u32 rate, u32 intvl, gfp_t gfp)
13899 {
13900 struct sk_buff *msg;
13901
13902 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13903 if (!msg)
13904 return;
13905
13906 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
13907 goto nla_put_failure;
13908
13909 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
13910 goto nla_put_failure;
13911
13912 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
13913 goto nla_put_failure;
13914
13915 cfg80211_send_cqm(msg, gfp);
13916 return;
13917
13918 nla_put_failure:
13919 nlmsg_free(msg);
13920 }
13921 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
13922
13923 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
13924 const u8 *peer, u32 num_packets, gfp_t gfp)
13925 {
13926 struct sk_buff *msg;
13927
13928 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
13929
13930 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13931 if (!msg)
13932 return;
13933
13934 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13935 goto nla_put_failure;
13936
13937 cfg80211_send_cqm(msg, gfp);
13938 return;
13939
13940 nla_put_failure:
13941 nlmsg_free(msg);
13942 }
13943 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13944
13945 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13946 {
13947 struct sk_buff *msg;
13948
13949 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13950 if (!msg)
13951 return;
13952
13953 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13954 goto nla_put_failure;
13955
13956 cfg80211_send_cqm(msg, gfp);
13957 return;
13958
13959 nla_put_failure:
13960 nlmsg_free(msg);
13961 }
13962 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13963
13964 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13965 struct net_device *netdev, const u8 *bssid,
13966 const u8 *replay_ctr, gfp_t gfp)
13967 {
13968 struct sk_buff *msg;
13969 struct nlattr *rekey_attr;
13970 void *hdr;
13971
13972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13973 if (!msg)
13974 return;
13975
13976 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13977 if (!hdr) {
13978 nlmsg_free(msg);
13979 return;
13980 }
13981
13982 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13983 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13984 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13985 goto nla_put_failure;
13986
13987 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13988 if (!rekey_attr)
13989 goto nla_put_failure;
13990
13991 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13992 NL80211_REPLAY_CTR_LEN, replay_ctr))
13993 goto nla_put_failure;
13994
13995 nla_nest_end(msg, rekey_attr);
13996
13997 genlmsg_end(msg, hdr);
13998
13999 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14000 NL80211_MCGRP_MLME, gfp);
14001 return;
14002
14003 nla_put_failure:
14004 genlmsg_cancel(msg, hdr);
14005 nlmsg_free(msg);
14006 }
14007
14008 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14009 const u8 *replay_ctr, gfp_t gfp)
14010 {
14011 struct wireless_dev *wdev = dev->ieee80211_ptr;
14012 struct wiphy *wiphy = wdev->wiphy;
14013 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14014
14015 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14016 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14017 }
14018 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14019
14020 static void
14021 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14022 struct net_device *netdev, int index,
14023 const u8 *bssid, bool preauth, gfp_t gfp)
14024 {
14025 struct sk_buff *msg;
14026 struct nlattr *attr;
14027 void *hdr;
14028
14029 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14030 if (!msg)
14031 return;
14032
14033 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14034 if (!hdr) {
14035 nlmsg_free(msg);
14036 return;
14037 }
14038
14039 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14040 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14041 goto nla_put_failure;
14042
14043 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14044 if (!attr)
14045 goto nla_put_failure;
14046
14047 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14048 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14049 (preauth &&
14050 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14051 goto nla_put_failure;
14052
14053 nla_nest_end(msg, attr);
14054
14055 genlmsg_end(msg, hdr);
14056
14057 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14058 NL80211_MCGRP_MLME, gfp);
14059 return;
14060
14061 nla_put_failure:
14062 genlmsg_cancel(msg, hdr);
14063 nlmsg_free(msg);
14064 }
14065
14066 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14067 const u8 *bssid, bool preauth, gfp_t gfp)
14068 {
14069 struct wireless_dev *wdev = dev->ieee80211_ptr;
14070 struct wiphy *wiphy = wdev->wiphy;
14071 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14072
14073 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14074 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14075 }
14076 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14077
14078 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14079 struct net_device *netdev,
14080 struct cfg80211_chan_def *chandef,
14081 gfp_t gfp,
14082 enum nl80211_commands notif,
14083 u8 count)
14084 {
14085 struct sk_buff *msg;
14086 void *hdr;
14087
14088 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14089 if (!msg)
14090 return;
14091
14092 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14093 if (!hdr) {
14094 nlmsg_free(msg);
14095 return;
14096 }
14097
14098 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14099 goto nla_put_failure;
14100
14101 if (nl80211_send_chandef(msg, chandef))
14102 goto nla_put_failure;
14103
14104 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14105 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14106 goto nla_put_failure;
14107
14108 genlmsg_end(msg, hdr);
14109
14110 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14111 NL80211_MCGRP_MLME, gfp);
14112 return;
14113
14114 nla_put_failure:
14115 genlmsg_cancel(msg, hdr);
14116 nlmsg_free(msg);
14117 }
14118
14119 void cfg80211_ch_switch_notify(struct net_device *dev,
14120 struct cfg80211_chan_def *chandef)
14121 {
14122 struct wireless_dev *wdev = dev->ieee80211_ptr;
14123 struct wiphy *wiphy = wdev->wiphy;
14124 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14125
14126 ASSERT_WDEV_LOCK(wdev);
14127
14128 trace_cfg80211_ch_switch_notify(dev, chandef);
14129
14130 wdev->chandef = *chandef;
14131 wdev->preset_chandef = *chandef;
14132 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14133 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14134 }
14135 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14136
14137 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14138 struct cfg80211_chan_def *chandef,
14139 u8 count)
14140 {
14141 struct wireless_dev *wdev = dev->ieee80211_ptr;
14142 struct wiphy *wiphy = wdev->wiphy;
14143 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14144
14145 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14146
14147 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14148 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14149 }
14150 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14151
14152 void
14153 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14154 const struct cfg80211_chan_def *chandef,
14155 enum nl80211_radar_event event,
14156 struct net_device *netdev, gfp_t gfp)
14157 {
14158 struct sk_buff *msg;
14159 void *hdr;
14160
14161 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14162 if (!msg)
14163 return;
14164
14165 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14166 if (!hdr) {
14167 nlmsg_free(msg);
14168 return;
14169 }
14170
14171 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14172 goto nla_put_failure;
14173
14174 /* NOP and radar events don't need a netdev parameter */
14175 if (netdev) {
14176 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14177
14178 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14179 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14180 NL80211_ATTR_PAD))
14181 goto nla_put_failure;
14182 }
14183
14184 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14185 goto nla_put_failure;
14186
14187 if (nl80211_send_chandef(msg, chandef))
14188 goto nla_put_failure;
14189
14190 genlmsg_end(msg, hdr);
14191
14192 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14193 NL80211_MCGRP_MLME, gfp);
14194 return;
14195
14196 nla_put_failure:
14197 genlmsg_cancel(msg, hdr);
14198 nlmsg_free(msg);
14199 }
14200
14201 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14202 u64 cookie, bool acked, gfp_t gfp)
14203 {
14204 struct wireless_dev *wdev = dev->ieee80211_ptr;
14205 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14206 struct sk_buff *msg;
14207 void *hdr;
14208
14209 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14210
14211 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14212
14213 if (!msg)
14214 return;
14215
14216 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14217 if (!hdr) {
14218 nlmsg_free(msg);
14219 return;
14220 }
14221
14222 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14223 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14224 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14225 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14226 NL80211_ATTR_PAD) ||
14227 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14228 goto nla_put_failure;
14229
14230 genlmsg_end(msg, hdr);
14231
14232 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14233 NL80211_MCGRP_MLME, gfp);
14234 return;
14235
14236 nla_put_failure:
14237 genlmsg_cancel(msg, hdr);
14238 nlmsg_free(msg);
14239 }
14240 EXPORT_SYMBOL(cfg80211_probe_status);
14241
14242 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14243 const u8 *frame, size_t len,
14244 int freq, int sig_dbm)
14245 {
14246 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14247 struct sk_buff *msg;
14248 void *hdr;
14249 struct cfg80211_beacon_registration *reg;
14250
14251 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14252
14253 spin_lock_bh(&rdev->beacon_registrations_lock);
14254 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14255 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14256 if (!msg) {
14257 spin_unlock_bh(&rdev->beacon_registrations_lock);
14258 return;
14259 }
14260
14261 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14262 if (!hdr)
14263 goto nla_put_failure;
14264
14265 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14266 (freq &&
14267 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14268 (sig_dbm &&
14269 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14270 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14271 goto nla_put_failure;
14272
14273 genlmsg_end(msg, hdr);
14274
14275 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14276 }
14277 spin_unlock_bh(&rdev->beacon_registrations_lock);
14278 return;
14279
14280 nla_put_failure:
14281 spin_unlock_bh(&rdev->beacon_registrations_lock);
14282 if (hdr)
14283 genlmsg_cancel(msg, hdr);
14284 nlmsg_free(msg);
14285 }
14286 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14287
14288 #ifdef CONFIG_PM
14289 static int cfg80211_net_detect_results(struct sk_buff *msg,
14290 struct cfg80211_wowlan_wakeup *wakeup)
14291 {
14292 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14293 struct nlattr *nl_results, *nl_match, *nl_freqs;
14294 int i, j;
14295
14296 nl_results = nla_nest_start(
14297 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14298 if (!nl_results)
14299 return -EMSGSIZE;
14300
14301 for (i = 0; i < nd->n_matches; i++) {
14302 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14303
14304 nl_match = nla_nest_start(msg, i);
14305 if (!nl_match)
14306 break;
14307
14308 /* The SSID attribute is optional in nl80211, but for
14309 * simplicity reasons it's always present in the
14310 * cfg80211 structure. If a driver can't pass the
14311 * SSID, that needs to be changed. A zero length SSID
14312 * is still a valid SSID (wildcard), so it cannot be
14313 * used for this purpose.
14314 */
14315 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14316 match->ssid.ssid)) {
14317 nla_nest_cancel(msg, nl_match);
14318 goto out;
14319 }
14320
14321 if (match->n_channels) {
14322 nl_freqs = nla_nest_start(
14323 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14324 if (!nl_freqs) {
14325 nla_nest_cancel(msg, nl_match);
14326 goto out;
14327 }
14328
14329 for (j = 0; j < match->n_channels; j++) {
14330 if (nla_put_u32(msg, j, match->channels[j])) {
14331 nla_nest_cancel(msg, nl_freqs);
14332 nla_nest_cancel(msg, nl_match);
14333 goto out;
14334 }
14335 }
14336
14337 nla_nest_end(msg, nl_freqs);
14338 }
14339
14340 nla_nest_end(msg, nl_match);
14341 }
14342
14343 out:
14344 nla_nest_end(msg, nl_results);
14345 return 0;
14346 }
14347
14348 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
14349 struct cfg80211_wowlan_wakeup *wakeup,
14350 gfp_t gfp)
14351 {
14352 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14353 struct sk_buff *msg;
14354 void *hdr;
14355 int size = 200;
14356
14357 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
14358
14359 if (wakeup)
14360 size += wakeup->packet_present_len;
14361
14362 msg = nlmsg_new(size, gfp);
14363 if (!msg)
14364 return;
14365
14366 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
14367 if (!hdr)
14368 goto free_msg;
14369
14370 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14371 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14372 NL80211_ATTR_PAD))
14373 goto free_msg;
14374
14375 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14376 wdev->netdev->ifindex))
14377 goto free_msg;
14378
14379 if (wakeup) {
14380 struct nlattr *reasons;
14381
14382 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
14383 if (!reasons)
14384 goto free_msg;
14385
14386 if (wakeup->disconnect &&
14387 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
14388 goto free_msg;
14389 if (wakeup->magic_pkt &&
14390 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
14391 goto free_msg;
14392 if (wakeup->gtk_rekey_failure &&
14393 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
14394 goto free_msg;
14395 if (wakeup->eap_identity_req &&
14396 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
14397 goto free_msg;
14398 if (wakeup->four_way_handshake &&
14399 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
14400 goto free_msg;
14401 if (wakeup->rfkill_release &&
14402 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
14403 goto free_msg;
14404
14405 if (wakeup->pattern_idx >= 0 &&
14406 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
14407 wakeup->pattern_idx))
14408 goto free_msg;
14409
14410 if (wakeup->tcp_match &&
14411 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
14412 goto free_msg;
14413
14414 if (wakeup->tcp_connlost &&
14415 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
14416 goto free_msg;
14417
14418 if (wakeup->tcp_nomoretokens &&
14419 nla_put_flag(msg,
14420 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
14421 goto free_msg;
14422
14423 if (wakeup->packet) {
14424 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
14425 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
14426
14427 if (!wakeup->packet_80211) {
14428 pkt_attr =
14429 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
14430 len_attr =
14431 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
14432 }
14433
14434 if (wakeup->packet_len &&
14435 nla_put_u32(msg, len_attr, wakeup->packet_len))
14436 goto free_msg;
14437
14438 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
14439 wakeup->packet))
14440 goto free_msg;
14441 }
14442
14443 if (wakeup->net_detect &&
14444 cfg80211_net_detect_results(msg, wakeup))
14445 goto free_msg;
14446
14447 nla_nest_end(msg, reasons);
14448 }
14449
14450 genlmsg_end(msg, hdr);
14451
14452 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14453 NL80211_MCGRP_MLME, gfp);
14454 return;
14455
14456 free_msg:
14457 nlmsg_free(msg);
14458 }
14459 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
14460 #endif
14461
14462 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
14463 enum nl80211_tdls_operation oper,
14464 u16 reason_code, gfp_t gfp)
14465 {
14466 struct wireless_dev *wdev = dev->ieee80211_ptr;
14467 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14468 struct sk_buff *msg;
14469 void *hdr;
14470
14471 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
14472 reason_code);
14473
14474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14475 if (!msg)
14476 return;
14477
14478 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
14479 if (!hdr) {
14480 nlmsg_free(msg);
14481 return;
14482 }
14483
14484 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14485 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14486 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
14487 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
14488 (reason_code > 0 &&
14489 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
14490 goto nla_put_failure;
14491
14492 genlmsg_end(msg, hdr);
14493
14494 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14495 NL80211_MCGRP_MLME, gfp);
14496 return;
14497
14498 nla_put_failure:
14499 genlmsg_cancel(msg, hdr);
14500 nlmsg_free(msg);
14501 }
14502 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
14503
14504 static int nl80211_netlink_notify(struct notifier_block * nb,
14505 unsigned long state,
14506 void *_notify)
14507 {
14508 struct netlink_notify *notify = _notify;
14509 struct cfg80211_registered_device *rdev;
14510 struct wireless_dev *wdev;
14511 struct cfg80211_beacon_registration *reg, *tmp;
14512
14513 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
14514 return NOTIFY_DONE;
14515
14516 rcu_read_lock();
14517
14518 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
14519 bool schedule_destroy_work = false;
14520 struct cfg80211_sched_scan_request *sched_scan_req =
14521 rcu_dereference(rdev->sched_scan_req);
14522
14523 if (sched_scan_req && notify->portid &&
14524 sched_scan_req->owner_nlportid == notify->portid) {
14525 sched_scan_req->owner_nlportid = 0;
14526
14527 if (rdev->ops->sched_scan_stop &&
14528 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
14529 schedule_work(&rdev->sched_scan_stop_wk);
14530 }
14531
14532 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
14533 cfg80211_mlme_unregister_socket(wdev, notify->portid);
14534
14535 if (wdev->owner_nlportid == notify->portid)
14536 schedule_destroy_work = true;
14537 }
14538
14539 spin_lock_bh(&rdev->beacon_registrations_lock);
14540 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
14541 list) {
14542 if (reg->nlportid == notify->portid) {
14543 list_del(&reg->list);
14544 kfree(reg);
14545 break;
14546 }
14547 }
14548 spin_unlock_bh(&rdev->beacon_registrations_lock);
14549
14550 if (schedule_destroy_work) {
14551 struct cfg80211_iface_destroy *destroy;
14552
14553 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
14554 if (destroy) {
14555 destroy->nlportid = notify->portid;
14556 spin_lock(&rdev->destroy_list_lock);
14557 list_add(&destroy->list, &rdev->destroy_list);
14558 spin_unlock(&rdev->destroy_list_lock);
14559 schedule_work(&rdev->destroy_work);
14560 }
14561 }
14562 }
14563
14564 rcu_read_unlock();
14565
14566 /*
14567 * It is possible that the user space process that is controlling the
14568 * indoor setting disappeared, so notify the regulatory core.
14569 */
14570 regulatory_netlink_notify(notify->portid);
14571 return NOTIFY_OK;
14572 }
14573
14574 static struct notifier_block nl80211_netlink_notifier = {
14575 .notifier_call = nl80211_netlink_notify,
14576 };
14577
14578 void cfg80211_ft_event(struct net_device *netdev,
14579 struct cfg80211_ft_event_params *ft_event)
14580 {
14581 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
14582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14583 struct sk_buff *msg;
14584 void *hdr;
14585
14586 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
14587
14588 if (!ft_event->target_ap)
14589 return;
14590
14591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14592 if (!msg)
14593 return;
14594
14595 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
14596 if (!hdr)
14597 goto out;
14598
14599 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14600 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14601 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
14602 goto out;
14603
14604 if (ft_event->ies &&
14605 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
14606 goto out;
14607 if (ft_event->ric_ies &&
14608 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
14609 ft_event->ric_ies))
14610 goto out;
14611
14612 genlmsg_end(msg, hdr);
14613
14614 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14615 NL80211_MCGRP_MLME, GFP_KERNEL);
14616 return;
14617 out:
14618 nlmsg_free(msg);
14619 }
14620 EXPORT_SYMBOL(cfg80211_ft_event);
14621
14622 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
14623 {
14624 struct cfg80211_registered_device *rdev;
14625 struct sk_buff *msg;
14626 void *hdr;
14627 u32 nlportid;
14628
14629 rdev = wiphy_to_rdev(wdev->wiphy);
14630 if (!rdev->crit_proto_nlportid)
14631 return;
14632
14633 nlportid = rdev->crit_proto_nlportid;
14634 rdev->crit_proto_nlportid = 0;
14635
14636 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14637 if (!msg)
14638 return;
14639
14640 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
14641 if (!hdr)
14642 goto nla_put_failure;
14643
14644 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14645 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14646 NL80211_ATTR_PAD))
14647 goto nla_put_failure;
14648
14649 genlmsg_end(msg, hdr);
14650
14651 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14652 return;
14653
14654 nla_put_failure:
14655 if (hdr)
14656 genlmsg_cancel(msg, hdr);
14657 nlmsg_free(msg);
14658 }
14659 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
14660
14661 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
14662 {
14663 struct wiphy *wiphy = wdev->wiphy;
14664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14665 struct sk_buff *msg;
14666 void *hdr;
14667
14668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14669 if (!msg)
14670 return;
14671
14672 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
14673 if (!hdr)
14674 goto out;
14675
14676 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14677 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
14678 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14679 NL80211_ATTR_PAD))
14680 goto out;
14681
14682 genlmsg_end(msg, hdr);
14683
14684 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
14685 NL80211_MCGRP_MLME, GFP_KERNEL);
14686 return;
14687 out:
14688 nlmsg_free(msg);
14689 }
14690
14691 /* initialisation/exit functions */
14692
14693 int __init nl80211_init(void)
14694 {
14695 int err;
14696
14697 err = genl_register_family(&nl80211_fam);
14698 if (err)
14699 return err;
14700
14701 err = netlink_register_notifier(&nl80211_netlink_notifier);
14702 if (err)
14703 goto err_out;
14704
14705 return 0;
14706 err_out:
14707 genl_unregister_family(&nl80211_fam);
14708 return err;
14709 }
14710
14711 void nl80211_exit(void)
14712 {
14713 netlink_unregister_notifier(&nl80211_netlink_notifier);
14714 genl_unregister_family(&nl80211_fam);
14715 }
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