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9555ef9fd99eead9f1a50420629c5e834e0f8b19
[deliverable/linux.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 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 };
401
402 /* policy for the key attributes */
403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
404 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
405 [NL80211_KEY_IDX] = { .type = NLA_U8 },
406 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
407 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
408 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
409 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
410 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
411 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
412 };
413
414 /* policy for the key default flags */
415 static const struct nla_policy
416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
417 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
418 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
419 };
420
421 /* policy for WoWLAN attributes */
422 static const struct nla_policy
423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
424 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
426 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
428 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
433 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
434 };
435
436 static const struct nla_policy
437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
438 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
439 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
440 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
441 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
442 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
443 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
446 },
447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
448 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
449 },
450 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
451 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
452 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
453 };
454
455 /* policy for coalesce rule attributes */
456 static const struct nla_policy
457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
458 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
459 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
460 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
461 };
462
463 /* policy for GTK rekey offload attributes */
464 static const struct nla_policy
465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
466 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
467 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
468 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
469 };
470
471 static const struct nla_policy
472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
473 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
474 .len = IEEE80211_MAX_SSID_LEN },
475 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
476 };
477
478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
479 struct netlink_callback *cb,
480 struct cfg80211_registered_device **rdev,
481 struct wireless_dev **wdev)
482 {
483 int err;
484
485 rtnl_lock();
486
487 if (!cb->args[0]) {
488 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
489 nl80211_fam.attrbuf, nl80211_fam.maxattr,
490 nl80211_policy);
491 if (err)
492 goto out_unlock;
493
494 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
495 nl80211_fam.attrbuf);
496 if (IS_ERR(*wdev)) {
497 err = PTR_ERR(*wdev);
498 goto out_unlock;
499 }
500 *rdev = wiphy_to_rdev((*wdev)->wiphy);
501 /* 0 is the first index - add 1 to parse only once */
502 cb->args[0] = (*rdev)->wiphy_idx + 1;
503 cb->args[1] = (*wdev)->identifier;
504 } else {
505 /* subtract the 1 again here */
506 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
507 struct wireless_dev *tmp;
508
509 if (!wiphy) {
510 err = -ENODEV;
511 goto out_unlock;
512 }
513 *rdev = wiphy_to_rdev(wiphy);
514 *wdev = NULL;
515
516 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
517 if (tmp->identifier == cb->args[1]) {
518 *wdev = tmp;
519 break;
520 }
521 }
522
523 if (!*wdev) {
524 err = -ENODEV;
525 goto out_unlock;
526 }
527 }
528
529 return 0;
530 out_unlock:
531 rtnl_unlock();
532 return err;
533 }
534
535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
536 {
537 rtnl_unlock();
538 }
539
540 /* IE validation */
541 static bool is_valid_ie_attr(const struct nlattr *attr)
542 {
543 const u8 *pos;
544 int len;
545
546 if (!attr)
547 return true;
548
549 pos = nla_data(attr);
550 len = nla_len(attr);
551
552 while (len) {
553 u8 elemlen;
554
555 if (len < 2)
556 return false;
557 len -= 2;
558
559 elemlen = pos[1];
560 if (elemlen > len)
561 return false;
562
563 len -= elemlen;
564 pos += 2 + elemlen;
565 }
566
567 return true;
568 }
569
570 /* message building helper */
571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
572 int flags, u8 cmd)
573 {
574 /* since there is no private header just add the generic one */
575 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
576 }
577
578 static int nl80211_msg_put_channel(struct sk_buff *msg,
579 struct ieee80211_channel *chan,
580 bool large)
581 {
582 /* Some channels must be completely excluded from the
583 * list to protect old user-space tools from breaking
584 */
585 if (!large && chan->flags &
586 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
587 return 0;
588
589 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
590 chan->center_freq))
591 goto nla_put_failure;
592
593 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
594 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
595 goto nla_put_failure;
596 if (chan->flags & IEEE80211_CHAN_NO_IR) {
597 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
598 goto nla_put_failure;
599 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
600 goto nla_put_failure;
601 }
602 if (chan->flags & IEEE80211_CHAN_RADAR) {
603 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
604 goto nla_put_failure;
605 if (large) {
606 u32 time;
607
608 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
609
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
611 chan->dfs_state))
612 goto nla_put_failure;
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
614 time))
615 goto nla_put_failure;
616 if (nla_put_u32(msg,
617 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
618 chan->dfs_cac_ms))
619 goto nla_put_failure;
620 }
621 }
622
623 if (large) {
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
644 goto nla_put_failure;
645 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
647 goto nla_put_failure;
648 }
649
650 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
651 DBM_TO_MBM(chan->max_power)))
652 goto nla_put_failure;
653
654 return 0;
655
656 nla_put_failure:
657 return -ENOBUFS;
658 }
659
660 /* netlink command implementations */
661
662 struct key_parse {
663 struct key_params p;
664 int idx;
665 int type;
666 bool def, defmgmt;
667 bool def_uni, def_multi;
668 };
669
670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
671 {
672 struct nlattr *tb[NL80211_KEY_MAX + 1];
673 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
674 nl80211_key_policy);
675 if (err)
676 return err;
677
678 k->def = !!tb[NL80211_KEY_DEFAULT];
679 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
680
681 if (k->def) {
682 k->def_uni = true;
683 k->def_multi = true;
684 }
685 if (k->defmgmt)
686 k->def_multi = true;
687
688 if (tb[NL80211_KEY_IDX])
689 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
690
691 if (tb[NL80211_KEY_DATA]) {
692 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
693 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
694 }
695
696 if (tb[NL80211_KEY_SEQ]) {
697 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
698 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
699 }
700
701 if (tb[NL80211_KEY_CIPHER])
702 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
703
704 if (tb[NL80211_KEY_TYPE]) {
705 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
706 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
707 return -EINVAL;
708 }
709
710 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
711 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
712 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
713 tb[NL80211_KEY_DEFAULT_TYPES],
714 nl80211_key_default_policy);
715 if (err)
716 return err;
717
718 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
719 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
720 }
721
722 return 0;
723 }
724
725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
726 {
727 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
728 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
729 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
730 }
731
732 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
733 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
734 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
735 }
736
737 if (info->attrs[NL80211_ATTR_KEY_IDX])
738 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
739
740 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
741 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
742
743 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
744 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
745
746 if (k->def) {
747 k->def_uni = true;
748 k->def_multi = true;
749 }
750 if (k->defmgmt)
751 k->def_multi = true;
752
753 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
754 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
755 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
756 return -EINVAL;
757 }
758
759 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
760 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
761 int err = nla_parse_nested(
762 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
763 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
764 nl80211_key_default_policy);
765 if (err)
766 return err;
767
768 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
769 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
770 }
771
772 return 0;
773 }
774
775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
776 {
777 int err;
778
779 memset(k, 0, sizeof(*k));
780 k->idx = -1;
781 k->type = -1;
782
783 if (info->attrs[NL80211_ATTR_KEY])
784 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
785 else
786 err = nl80211_parse_key_old(info, k);
787
788 if (err)
789 return err;
790
791 if (k->def && k->defmgmt)
792 return -EINVAL;
793
794 if (k->defmgmt) {
795 if (k->def_uni || !k->def_multi)
796 return -EINVAL;
797 }
798
799 if (k->idx != -1) {
800 if (k->defmgmt) {
801 if (k->idx < 4 || k->idx > 5)
802 return -EINVAL;
803 } else if (k->def) {
804 if (k->idx < 0 || k->idx > 3)
805 return -EINVAL;
806 } else {
807 if (k->idx < 0 || k->idx > 5)
808 return -EINVAL;
809 }
810 }
811
812 return 0;
813 }
814
815 static struct cfg80211_cached_keys *
816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
817 struct nlattr *keys, bool *no_ht)
818 {
819 struct key_parse parse;
820 struct nlattr *key;
821 struct cfg80211_cached_keys *result;
822 int rem, err, def = 0;
823
824 result = kzalloc(sizeof(*result), GFP_KERNEL);
825 if (!result)
826 return ERR_PTR(-ENOMEM);
827
828 result->def = -1;
829 result->defmgmt = -1;
830
831 nla_for_each_nested(key, keys, rem) {
832 memset(&parse, 0, sizeof(parse));
833 parse.idx = -1;
834
835 err = nl80211_parse_key_new(key, &parse);
836 if (err)
837 goto error;
838 err = -EINVAL;
839 if (!parse.p.key)
840 goto error;
841 if (parse.idx < 0 || parse.idx > 4)
842 goto error;
843 if (parse.def) {
844 if (def)
845 goto error;
846 def = 1;
847 result->def = parse.idx;
848 if (!parse.def_uni || !parse.def_multi)
849 goto error;
850 } else if (parse.defmgmt)
851 goto error;
852 err = cfg80211_validate_key_settings(rdev, &parse.p,
853 parse.idx, false, NULL);
854 if (err)
855 goto error;
856 result->params[parse.idx].cipher = parse.p.cipher;
857 result->params[parse.idx].key_len = parse.p.key_len;
858 result->params[parse.idx].key = result->data[parse.idx];
859 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
860
861 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
862 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
863 if (no_ht)
864 *no_ht = true;
865 }
866 }
867
868 return result;
869 error:
870 kfree(result);
871 return ERR_PTR(err);
872 }
873
874 static int nl80211_key_allowed(struct wireless_dev *wdev)
875 {
876 ASSERT_WDEV_LOCK(wdev);
877
878 switch (wdev->iftype) {
879 case NL80211_IFTYPE_AP:
880 case NL80211_IFTYPE_AP_VLAN:
881 case NL80211_IFTYPE_P2P_GO:
882 case NL80211_IFTYPE_MESH_POINT:
883 break;
884 case NL80211_IFTYPE_ADHOC:
885 case NL80211_IFTYPE_STATION:
886 case NL80211_IFTYPE_P2P_CLIENT:
887 if (!wdev->current_bss)
888 return -ENOLINK;
889 break;
890 case NL80211_IFTYPE_UNSPECIFIED:
891 case NL80211_IFTYPE_OCB:
892 case NL80211_IFTYPE_MONITOR:
893 case NL80211_IFTYPE_P2P_DEVICE:
894 case NL80211_IFTYPE_WDS:
895 case NUM_NL80211_IFTYPES:
896 return -EINVAL;
897 }
898
899 return 0;
900 }
901
902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
903 struct nlattr *tb)
904 {
905 struct ieee80211_channel *chan;
906
907 if (tb == NULL)
908 return NULL;
909 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
910 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
911 return NULL;
912 return chan;
913 }
914
915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
916 {
917 struct nlattr *nl_modes = nla_nest_start(msg, attr);
918 int i;
919
920 if (!nl_modes)
921 goto nla_put_failure;
922
923 i = 0;
924 while (ifmodes) {
925 if ((ifmodes & 1) && nla_put_flag(msg, i))
926 goto nla_put_failure;
927 ifmodes >>= 1;
928 i++;
929 }
930
931 nla_nest_end(msg, nl_modes);
932 return 0;
933
934 nla_put_failure:
935 return -ENOBUFS;
936 }
937
938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
939 struct sk_buff *msg,
940 bool large)
941 {
942 struct nlattr *nl_combis;
943 int i, j;
944
945 nl_combis = nla_nest_start(msg,
946 NL80211_ATTR_INTERFACE_COMBINATIONS);
947 if (!nl_combis)
948 goto nla_put_failure;
949
950 for (i = 0; i < wiphy->n_iface_combinations; i++) {
951 const struct ieee80211_iface_combination *c;
952 struct nlattr *nl_combi, *nl_limits;
953
954 c = &wiphy->iface_combinations[i];
955
956 nl_combi = nla_nest_start(msg, i + 1);
957 if (!nl_combi)
958 goto nla_put_failure;
959
960 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
961 if (!nl_limits)
962 goto nla_put_failure;
963
964 for (j = 0; j < c->n_limits; j++) {
965 struct nlattr *nl_limit;
966
967 nl_limit = nla_nest_start(msg, j + 1);
968 if (!nl_limit)
969 goto nla_put_failure;
970 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
971 c->limits[j].max))
972 goto nla_put_failure;
973 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
974 c->limits[j].types))
975 goto nla_put_failure;
976 nla_nest_end(msg, nl_limit);
977 }
978
979 nla_nest_end(msg, nl_limits);
980
981 if (c->beacon_int_infra_match &&
982 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
983 goto nla_put_failure;
984 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
985 c->num_different_channels) ||
986 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
987 c->max_interfaces))
988 goto nla_put_failure;
989 if (large &&
990 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
991 c->radar_detect_widths) ||
992 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
993 c->radar_detect_regions)))
994 goto nla_put_failure;
995
996 nla_nest_end(msg, nl_combi);
997 }
998
999 nla_nest_end(msg, nl_combis);
1000
1001 return 0;
1002 nla_put_failure:
1003 return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008 struct sk_buff *msg)
1009 {
1010 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011 struct nlattr *nl_tcp;
1012
1013 if (!tcp)
1014 return 0;
1015
1016 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017 if (!nl_tcp)
1018 return -ENOBUFS;
1019
1020 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021 tcp->data_payload_max))
1022 return -ENOBUFS;
1023
1024 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025 tcp->data_payload_max))
1026 return -ENOBUFS;
1027
1028 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029 return -ENOBUFS;
1030
1031 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032 sizeof(*tcp->tok), tcp->tok))
1033 return -ENOBUFS;
1034
1035 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036 tcp->data_interval_max))
1037 return -ENOBUFS;
1038
1039 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040 tcp->wake_payload_max))
1041 return -ENOBUFS;
1042
1043 nla_nest_end(msg, nl_tcp);
1044 return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048 struct cfg80211_registered_device *rdev,
1049 bool large)
1050 {
1051 struct nlattr *nl_wowlan;
1052
1053 if (!rdev->wiphy.wowlan)
1054 return 0;
1055
1056 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057 if (!nl_wowlan)
1058 return -ENOBUFS;
1059
1060 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076 return -ENOBUFS;
1077
1078 if (rdev->wiphy.wowlan->n_patterns) {
1079 struct nl80211_pattern_support pat = {
1080 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084 };
1085
1086 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087 sizeof(pat), &pat))
1088 return -ENOBUFS;
1089 }
1090
1091 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1092 return -ENOBUFS;
1093
1094 /* TODO: send wowlan net detect */
1095
1096 nla_nest_end(msg, nl_wowlan);
1097
1098 return 0;
1099 }
1100 #endif
1101
1102 static int nl80211_send_coalesce(struct sk_buff *msg,
1103 struct cfg80211_registered_device *rdev)
1104 {
1105 struct nl80211_coalesce_rule_support rule;
1106
1107 if (!rdev->wiphy.coalesce)
1108 return 0;
1109
1110 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1111 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1112 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1113 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1114 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1115 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1116
1117 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1118 return -ENOBUFS;
1119
1120 return 0;
1121 }
1122
1123 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1124 struct ieee80211_supported_band *sband)
1125 {
1126 struct nlattr *nl_rates, *nl_rate;
1127 struct ieee80211_rate *rate;
1128 int i;
1129
1130 /* add HT info */
1131 if (sband->ht_cap.ht_supported &&
1132 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1133 sizeof(sband->ht_cap.mcs),
1134 &sband->ht_cap.mcs) ||
1135 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1136 sband->ht_cap.cap) ||
1137 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1138 sband->ht_cap.ampdu_factor) ||
1139 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1140 sband->ht_cap.ampdu_density)))
1141 return -ENOBUFS;
1142
1143 /* add VHT info */
1144 if (sband->vht_cap.vht_supported &&
1145 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1146 sizeof(sband->vht_cap.vht_mcs),
1147 &sband->vht_cap.vht_mcs) ||
1148 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1149 sband->vht_cap.cap)))
1150 return -ENOBUFS;
1151
1152 /* add bitrates */
1153 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1154 if (!nl_rates)
1155 return -ENOBUFS;
1156
1157 for (i = 0; i < sband->n_bitrates; i++) {
1158 nl_rate = nla_nest_start(msg, i);
1159 if (!nl_rate)
1160 return -ENOBUFS;
1161
1162 rate = &sband->bitrates[i];
1163 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1164 rate->bitrate))
1165 return -ENOBUFS;
1166 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1167 nla_put_flag(msg,
1168 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1169 return -ENOBUFS;
1170
1171 nla_nest_end(msg, nl_rate);
1172 }
1173
1174 nla_nest_end(msg, nl_rates);
1175
1176 return 0;
1177 }
1178
1179 static int
1180 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1181 const struct ieee80211_txrx_stypes *mgmt_stypes)
1182 {
1183 u16 stypes;
1184 struct nlattr *nl_ftypes, *nl_ifs;
1185 enum nl80211_iftype ift;
1186 int i;
1187
1188 if (!mgmt_stypes)
1189 return 0;
1190
1191 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1192 if (!nl_ifs)
1193 return -ENOBUFS;
1194
1195 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1196 nl_ftypes = nla_nest_start(msg, ift);
1197 if (!nl_ftypes)
1198 return -ENOBUFS;
1199 i = 0;
1200 stypes = mgmt_stypes[ift].tx;
1201 while (stypes) {
1202 if ((stypes & 1) &&
1203 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1204 (i << 4) | IEEE80211_FTYPE_MGMT))
1205 return -ENOBUFS;
1206 stypes >>= 1;
1207 i++;
1208 }
1209 nla_nest_end(msg, nl_ftypes);
1210 }
1211
1212 nla_nest_end(msg, nl_ifs);
1213
1214 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1215 if (!nl_ifs)
1216 return -ENOBUFS;
1217
1218 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1219 nl_ftypes = nla_nest_start(msg, ift);
1220 if (!nl_ftypes)
1221 return -ENOBUFS;
1222 i = 0;
1223 stypes = mgmt_stypes[ift].rx;
1224 while (stypes) {
1225 if ((stypes & 1) &&
1226 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1227 (i << 4) | IEEE80211_FTYPE_MGMT))
1228 return -ENOBUFS;
1229 stypes >>= 1;
1230 i++;
1231 }
1232 nla_nest_end(msg, nl_ftypes);
1233 }
1234 nla_nest_end(msg, nl_ifs);
1235
1236 return 0;
1237 }
1238
1239 struct nl80211_dump_wiphy_state {
1240 s64 filter_wiphy;
1241 long start;
1242 long split_start, band_start, chan_start;
1243 bool split;
1244 };
1245
1246 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1247 enum nl80211_commands cmd,
1248 struct sk_buff *msg, u32 portid, u32 seq,
1249 int flags, struct nl80211_dump_wiphy_state *state)
1250 {
1251 void *hdr;
1252 struct nlattr *nl_bands, *nl_band;
1253 struct nlattr *nl_freqs, *nl_freq;
1254 struct nlattr *nl_cmds;
1255 enum ieee80211_band band;
1256 struct ieee80211_channel *chan;
1257 int i;
1258 const struct ieee80211_txrx_stypes *mgmt_stypes =
1259 rdev->wiphy.mgmt_stypes;
1260 u32 features;
1261
1262 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1263 if (!hdr)
1264 return -ENOBUFS;
1265
1266 if (WARN_ON(!state))
1267 return -EINVAL;
1268
1269 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1270 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1271 wiphy_name(&rdev->wiphy)) ||
1272 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1273 cfg80211_rdev_list_generation))
1274 goto nla_put_failure;
1275
1276 if (cmd != NL80211_CMD_NEW_WIPHY)
1277 goto finish;
1278
1279 switch (state->split_start) {
1280 case 0:
1281 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1282 rdev->wiphy.retry_short) ||
1283 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1284 rdev->wiphy.retry_long) ||
1285 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1286 rdev->wiphy.frag_threshold) ||
1287 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1288 rdev->wiphy.rts_threshold) ||
1289 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1290 rdev->wiphy.coverage_class) ||
1291 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1292 rdev->wiphy.max_scan_ssids) ||
1293 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1294 rdev->wiphy.max_sched_scan_ssids) ||
1295 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1296 rdev->wiphy.max_scan_ie_len) ||
1297 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1298 rdev->wiphy.max_sched_scan_ie_len) ||
1299 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1300 rdev->wiphy.max_match_sets))
1301 goto nla_put_failure;
1302
1303 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1304 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1305 goto nla_put_failure;
1306 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1307 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1308 goto nla_put_failure;
1309 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1310 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1311 goto nla_put_failure;
1312 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1313 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1314 goto nla_put_failure;
1315 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1316 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1317 goto nla_put_failure;
1318 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1319 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1320 goto nla_put_failure;
1321 state->split_start++;
1322 if (state->split)
1323 break;
1324 case 1:
1325 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1326 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1327 rdev->wiphy.cipher_suites))
1328 goto nla_put_failure;
1329
1330 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1331 rdev->wiphy.max_num_pmkids))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1335 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1336 goto nla_put_failure;
1337
1338 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1339 rdev->wiphy.available_antennas_tx) ||
1340 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1341 rdev->wiphy.available_antennas_rx))
1342 goto nla_put_failure;
1343
1344 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1345 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1346 rdev->wiphy.probe_resp_offload))
1347 goto nla_put_failure;
1348
1349 if ((rdev->wiphy.available_antennas_tx ||
1350 rdev->wiphy.available_antennas_rx) &&
1351 rdev->ops->get_antenna) {
1352 u32 tx_ant = 0, rx_ant = 0;
1353 int res;
1354 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1355 if (!res) {
1356 if (nla_put_u32(msg,
1357 NL80211_ATTR_WIPHY_ANTENNA_TX,
1358 tx_ant) ||
1359 nla_put_u32(msg,
1360 NL80211_ATTR_WIPHY_ANTENNA_RX,
1361 rx_ant))
1362 goto nla_put_failure;
1363 }
1364 }
1365
1366 state->split_start++;
1367 if (state->split)
1368 break;
1369 case 2:
1370 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1371 rdev->wiphy.interface_modes))
1372 goto nla_put_failure;
1373 state->split_start++;
1374 if (state->split)
1375 break;
1376 case 3:
1377 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1378 if (!nl_bands)
1379 goto nla_put_failure;
1380
1381 for (band = state->band_start;
1382 band < IEEE80211_NUM_BANDS; band++) {
1383 struct ieee80211_supported_band *sband;
1384
1385 sband = rdev->wiphy.bands[band];
1386
1387 if (!sband)
1388 continue;
1389
1390 nl_band = nla_nest_start(msg, band);
1391 if (!nl_band)
1392 goto nla_put_failure;
1393
1394 switch (state->chan_start) {
1395 case 0:
1396 if (nl80211_send_band_rateinfo(msg, sband))
1397 goto nla_put_failure;
1398 state->chan_start++;
1399 if (state->split)
1400 break;
1401 default:
1402 /* add frequencies */
1403 nl_freqs = nla_nest_start(
1404 msg, NL80211_BAND_ATTR_FREQS);
1405 if (!nl_freqs)
1406 goto nla_put_failure;
1407
1408 for (i = state->chan_start - 1;
1409 i < sband->n_channels;
1410 i++) {
1411 nl_freq = nla_nest_start(msg, i);
1412 if (!nl_freq)
1413 goto nla_put_failure;
1414
1415 chan = &sband->channels[i];
1416
1417 if (nl80211_msg_put_channel(
1418 msg, chan,
1419 state->split))
1420 goto nla_put_failure;
1421
1422 nla_nest_end(msg, nl_freq);
1423 if (state->split)
1424 break;
1425 }
1426 if (i < sband->n_channels)
1427 state->chan_start = i + 2;
1428 else
1429 state->chan_start = 0;
1430 nla_nest_end(msg, nl_freqs);
1431 }
1432
1433 nla_nest_end(msg, nl_band);
1434
1435 if (state->split) {
1436 /* start again here */
1437 if (state->chan_start)
1438 band--;
1439 break;
1440 }
1441 }
1442 nla_nest_end(msg, nl_bands);
1443
1444 if (band < IEEE80211_NUM_BANDS)
1445 state->band_start = band + 1;
1446 else
1447 state->band_start = 0;
1448
1449 /* if bands & channels are done, continue outside */
1450 if (state->band_start == 0 && state->chan_start == 0)
1451 state->split_start++;
1452 if (state->split)
1453 break;
1454 case 4:
1455 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1456 if (!nl_cmds)
1457 goto nla_put_failure;
1458
1459 i = 0;
1460 #define CMD(op, n) \
1461 do { \
1462 if (rdev->ops->op) { \
1463 i++; \
1464 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1465 goto nla_put_failure; \
1466 } \
1467 } while (0)
1468
1469 CMD(add_virtual_intf, NEW_INTERFACE);
1470 CMD(change_virtual_intf, SET_INTERFACE);
1471 CMD(add_key, NEW_KEY);
1472 CMD(start_ap, START_AP);
1473 CMD(add_station, NEW_STATION);
1474 CMD(add_mpath, NEW_MPATH);
1475 CMD(update_mesh_config, SET_MESH_CONFIG);
1476 CMD(change_bss, SET_BSS);
1477 CMD(auth, AUTHENTICATE);
1478 CMD(assoc, ASSOCIATE);
1479 CMD(deauth, DEAUTHENTICATE);
1480 CMD(disassoc, DISASSOCIATE);
1481 CMD(join_ibss, JOIN_IBSS);
1482 CMD(join_mesh, JOIN_MESH);
1483 CMD(set_pmksa, SET_PMKSA);
1484 CMD(del_pmksa, DEL_PMKSA);
1485 CMD(flush_pmksa, FLUSH_PMKSA);
1486 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1487 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1488 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1489 CMD(mgmt_tx, FRAME);
1490 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1491 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1492 i++;
1493 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1494 goto nla_put_failure;
1495 }
1496 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1497 rdev->ops->join_mesh) {
1498 i++;
1499 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1500 goto nla_put_failure;
1501 }
1502 CMD(set_wds_peer, SET_WDS_PEER);
1503 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1504 CMD(tdls_mgmt, TDLS_MGMT);
1505 CMD(tdls_oper, TDLS_OPER);
1506 }
1507 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1508 CMD(sched_scan_start, START_SCHED_SCAN);
1509 CMD(probe_client, PROBE_CLIENT);
1510 CMD(set_noack_map, SET_NOACK_MAP);
1511 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1512 i++;
1513 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1514 goto nla_put_failure;
1515 }
1516 CMD(start_p2p_device, START_P2P_DEVICE);
1517 CMD(set_mcast_rate, SET_MCAST_RATE);
1518 #ifdef CONFIG_NL80211_TESTMODE
1519 CMD(testmode_cmd, TESTMODE);
1520 #endif
1521 if (state->split) {
1522 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1523 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1524 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1525 CMD(channel_switch, CHANNEL_SWITCH);
1526 CMD(set_qos_map, SET_QOS_MAP);
1527 if (rdev->wiphy.features &
1528 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1529 CMD(add_tx_ts, ADD_TX_TS);
1530 }
1531 /* add into the if now */
1532 #undef CMD
1533
1534 if (rdev->ops->connect || rdev->ops->auth) {
1535 i++;
1536 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1537 goto nla_put_failure;
1538 }
1539
1540 if (rdev->ops->disconnect || rdev->ops->deauth) {
1541 i++;
1542 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1543 goto nla_put_failure;
1544 }
1545
1546 nla_nest_end(msg, nl_cmds);
1547 state->split_start++;
1548 if (state->split)
1549 break;
1550 case 5:
1551 if (rdev->ops->remain_on_channel &&
1552 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1553 nla_put_u32(msg,
1554 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1555 rdev->wiphy.max_remain_on_channel_duration))
1556 goto nla_put_failure;
1557
1558 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1559 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1560 goto nla_put_failure;
1561
1562 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1563 goto nla_put_failure;
1564 state->split_start++;
1565 if (state->split)
1566 break;
1567 case 6:
1568 #ifdef CONFIG_PM
1569 if (nl80211_send_wowlan(msg, rdev, state->split))
1570 goto nla_put_failure;
1571 state->split_start++;
1572 if (state->split)
1573 break;
1574 #else
1575 state->split_start++;
1576 #endif
1577 case 7:
1578 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1579 rdev->wiphy.software_iftypes))
1580 goto nla_put_failure;
1581
1582 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1583 state->split))
1584 goto nla_put_failure;
1585
1586 state->split_start++;
1587 if (state->split)
1588 break;
1589 case 8:
1590 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1591 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1592 rdev->wiphy.ap_sme_capa))
1593 goto nla_put_failure;
1594
1595 features = rdev->wiphy.features;
1596 /*
1597 * We can only add the per-channel limit information if the
1598 * dump is split, otherwise it makes it too big. Therefore
1599 * only advertise it in that case.
1600 */
1601 if (state->split)
1602 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1603 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1604 goto nla_put_failure;
1605
1606 if (rdev->wiphy.ht_capa_mod_mask &&
1607 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1608 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1609 rdev->wiphy.ht_capa_mod_mask))
1610 goto nla_put_failure;
1611
1612 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1613 rdev->wiphy.max_acl_mac_addrs &&
1614 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1615 rdev->wiphy.max_acl_mac_addrs))
1616 goto nla_put_failure;
1617
1618 /*
1619 * Any information below this point is only available to
1620 * applications that can deal with it being split. This
1621 * helps ensure that newly added capabilities don't break
1622 * older tools by overrunning their buffers.
1623 *
1624 * We still increment split_start so that in the split
1625 * case we'll continue with more data in the next round,
1626 * but break unconditionally so unsplit data stops here.
1627 */
1628 state->split_start++;
1629 break;
1630 case 9:
1631 if (rdev->wiphy.extended_capabilities &&
1632 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1633 rdev->wiphy.extended_capabilities_len,
1634 rdev->wiphy.extended_capabilities) ||
1635 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1636 rdev->wiphy.extended_capabilities_len,
1637 rdev->wiphy.extended_capabilities_mask)))
1638 goto nla_put_failure;
1639
1640 if (rdev->wiphy.vht_capa_mod_mask &&
1641 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1642 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1643 rdev->wiphy.vht_capa_mod_mask))
1644 goto nla_put_failure;
1645
1646 state->split_start++;
1647 break;
1648 case 10:
1649 if (nl80211_send_coalesce(msg, rdev))
1650 goto nla_put_failure;
1651
1652 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1653 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1654 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1655 goto nla_put_failure;
1656
1657 if (rdev->wiphy.max_ap_assoc_sta &&
1658 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1659 rdev->wiphy.max_ap_assoc_sta))
1660 goto nla_put_failure;
1661
1662 state->split_start++;
1663 break;
1664 case 11:
1665 if (rdev->wiphy.n_vendor_commands) {
1666 const struct nl80211_vendor_cmd_info *info;
1667 struct nlattr *nested;
1668
1669 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1670 if (!nested)
1671 goto nla_put_failure;
1672
1673 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1674 info = &rdev->wiphy.vendor_commands[i].info;
1675 if (nla_put(msg, i + 1, sizeof(*info), info))
1676 goto nla_put_failure;
1677 }
1678 nla_nest_end(msg, nested);
1679 }
1680
1681 if (rdev->wiphy.n_vendor_events) {
1682 const struct nl80211_vendor_cmd_info *info;
1683 struct nlattr *nested;
1684
1685 nested = nla_nest_start(msg,
1686 NL80211_ATTR_VENDOR_EVENTS);
1687 if (!nested)
1688 goto nla_put_failure;
1689
1690 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1691 info = &rdev->wiphy.vendor_events[i];
1692 if (nla_put(msg, i + 1, sizeof(*info), info))
1693 goto nla_put_failure;
1694 }
1695 nla_nest_end(msg, nested);
1696 }
1697 state->split_start++;
1698 break;
1699 case 12:
1700 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1701 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1702 rdev->wiphy.max_num_csa_counters))
1703 goto nla_put_failure;
1704
1705 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1706 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1707 goto nla_put_failure;
1708
1709 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1710 sizeof(rdev->wiphy.ext_features),
1711 rdev->wiphy.ext_features))
1712 goto nla_put_failure;
1713
1714 /* done */
1715 state->split_start = 0;
1716 break;
1717 }
1718 finish:
1719 return genlmsg_end(msg, hdr);
1720
1721 nla_put_failure:
1722 genlmsg_cancel(msg, hdr);
1723 return -EMSGSIZE;
1724 }
1725
1726 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1727 struct netlink_callback *cb,
1728 struct nl80211_dump_wiphy_state *state)
1729 {
1730 struct nlattr **tb = nl80211_fam.attrbuf;
1731 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1732 tb, nl80211_fam.maxattr, nl80211_policy);
1733 /* ignore parse errors for backward compatibility */
1734 if (ret)
1735 return 0;
1736
1737 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1738 if (tb[NL80211_ATTR_WIPHY])
1739 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1740 if (tb[NL80211_ATTR_WDEV])
1741 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1742 if (tb[NL80211_ATTR_IFINDEX]) {
1743 struct net_device *netdev;
1744 struct cfg80211_registered_device *rdev;
1745 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1746
1747 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1748 if (!netdev)
1749 return -ENODEV;
1750 if (netdev->ieee80211_ptr) {
1751 rdev = wiphy_to_rdev(
1752 netdev->ieee80211_ptr->wiphy);
1753 state->filter_wiphy = rdev->wiphy_idx;
1754 }
1755 }
1756
1757 return 0;
1758 }
1759
1760 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1761 {
1762 int idx = 0, ret;
1763 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1764 struct cfg80211_registered_device *rdev;
1765
1766 rtnl_lock();
1767 if (!state) {
1768 state = kzalloc(sizeof(*state), GFP_KERNEL);
1769 if (!state) {
1770 rtnl_unlock();
1771 return -ENOMEM;
1772 }
1773 state->filter_wiphy = -1;
1774 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1775 if (ret) {
1776 kfree(state);
1777 rtnl_unlock();
1778 return ret;
1779 }
1780 cb->args[0] = (long)state;
1781 }
1782
1783 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1784 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1785 continue;
1786 if (++idx <= state->start)
1787 continue;
1788 if (state->filter_wiphy != -1 &&
1789 state->filter_wiphy != rdev->wiphy_idx)
1790 continue;
1791 /* attempt to fit multiple wiphy data chunks into the skb */
1792 do {
1793 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1794 skb,
1795 NETLINK_CB(cb->skb).portid,
1796 cb->nlh->nlmsg_seq,
1797 NLM_F_MULTI, state);
1798 if (ret < 0) {
1799 /*
1800 * If sending the wiphy data didn't fit (ENOBUFS
1801 * or EMSGSIZE returned), this SKB is still
1802 * empty (so it's not too big because another
1803 * wiphy dataset is already in the skb) and
1804 * we've not tried to adjust the dump allocation
1805 * yet ... then adjust the alloc size to be
1806 * bigger, and return 1 but with the empty skb.
1807 * This results in an empty message being RX'ed
1808 * in userspace, but that is ignored.
1809 *
1810 * We can then retry with the larger buffer.
1811 */
1812 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1813 !skb->len && !state->split &&
1814 cb->min_dump_alloc < 4096) {
1815 cb->min_dump_alloc = 4096;
1816 state->split_start = 0;
1817 rtnl_unlock();
1818 return 1;
1819 }
1820 idx--;
1821 break;
1822 }
1823 } while (state->split_start > 0);
1824 break;
1825 }
1826 rtnl_unlock();
1827
1828 state->start = idx;
1829
1830 return skb->len;
1831 }
1832
1833 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1834 {
1835 kfree((void *)cb->args[0]);
1836 return 0;
1837 }
1838
1839 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1840 {
1841 struct sk_buff *msg;
1842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1843 struct nl80211_dump_wiphy_state state = {};
1844
1845 msg = nlmsg_new(4096, GFP_KERNEL);
1846 if (!msg)
1847 return -ENOMEM;
1848
1849 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1850 info->snd_portid, info->snd_seq, 0,
1851 &state) < 0) {
1852 nlmsg_free(msg);
1853 return -ENOBUFS;
1854 }
1855
1856 return genlmsg_reply(msg, info);
1857 }
1858
1859 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1860 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1861 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1862 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1863 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1864 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1865 };
1866
1867 static int parse_txq_params(struct nlattr *tb[],
1868 struct ieee80211_txq_params *txq_params)
1869 {
1870 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1871 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1872 !tb[NL80211_TXQ_ATTR_AIFS])
1873 return -EINVAL;
1874
1875 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1876 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1877 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1878 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1879 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1880
1881 if (txq_params->ac >= NL80211_NUM_ACS)
1882 return -EINVAL;
1883
1884 return 0;
1885 }
1886
1887 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1888 {
1889 /*
1890 * You can only set the channel explicitly for WDS interfaces,
1891 * all others have their channel managed via their respective
1892 * "establish a connection" command (connect, join, ...)
1893 *
1894 * For AP/GO and mesh mode, the channel can be set with the
1895 * channel userspace API, but is only stored and passed to the
1896 * low-level driver when the AP starts or the mesh is joined.
1897 * This is for backward compatibility, userspace can also give
1898 * the channel in the start-ap or join-mesh commands instead.
1899 *
1900 * Monitors are special as they are normally slaved to
1901 * whatever else is going on, so they have their own special
1902 * operation to set the monitor channel if possible.
1903 */
1904 return !wdev ||
1905 wdev->iftype == NL80211_IFTYPE_AP ||
1906 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1907 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1908 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1909 }
1910
1911 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1912 struct genl_info *info,
1913 struct cfg80211_chan_def *chandef)
1914 {
1915 u32 control_freq;
1916
1917 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1918 return -EINVAL;
1919
1920 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1921
1922 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1923 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1924 chandef->center_freq1 = control_freq;
1925 chandef->center_freq2 = 0;
1926
1927 /* Primary channel not allowed */
1928 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1929 return -EINVAL;
1930
1931 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1932 enum nl80211_channel_type chantype;
1933
1934 chantype = nla_get_u32(
1935 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1936
1937 switch (chantype) {
1938 case NL80211_CHAN_NO_HT:
1939 case NL80211_CHAN_HT20:
1940 case NL80211_CHAN_HT40PLUS:
1941 case NL80211_CHAN_HT40MINUS:
1942 cfg80211_chandef_create(chandef, chandef->chan,
1943 chantype);
1944 break;
1945 default:
1946 return -EINVAL;
1947 }
1948 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1949 chandef->width =
1950 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1951 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1952 chandef->center_freq1 =
1953 nla_get_u32(
1954 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1955 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1956 chandef->center_freq2 =
1957 nla_get_u32(
1958 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1959 }
1960
1961 if (!cfg80211_chandef_valid(chandef))
1962 return -EINVAL;
1963
1964 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1965 IEEE80211_CHAN_DISABLED))
1966 return -EINVAL;
1967
1968 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1969 chandef->width == NL80211_CHAN_WIDTH_10) &&
1970 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1971 return -EINVAL;
1972
1973 return 0;
1974 }
1975
1976 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1977 struct net_device *dev,
1978 struct genl_info *info)
1979 {
1980 struct cfg80211_chan_def chandef;
1981 int result;
1982 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1983 struct wireless_dev *wdev = NULL;
1984
1985 if (dev)
1986 wdev = dev->ieee80211_ptr;
1987 if (!nl80211_can_set_dev_channel(wdev))
1988 return -EOPNOTSUPP;
1989 if (wdev)
1990 iftype = wdev->iftype;
1991
1992 result = nl80211_parse_chandef(rdev, info, &chandef);
1993 if (result)
1994 return result;
1995
1996 switch (iftype) {
1997 case NL80211_IFTYPE_AP:
1998 case NL80211_IFTYPE_P2P_GO:
1999 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2000 result = -EINVAL;
2001 break;
2002 }
2003 if (wdev->beacon_interval) {
2004 if (!dev || !rdev->ops->set_ap_chanwidth ||
2005 !(rdev->wiphy.features &
2006 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2007 result = -EBUSY;
2008 break;
2009 }
2010
2011 /* Only allow dynamic channel width changes */
2012 if (chandef.chan != wdev->preset_chandef.chan) {
2013 result = -EBUSY;
2014 break;
2015 }
2016 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2017 if (result)
2018 break;
2019 }
2020 wdev->preset_chandef = chandef;
2021 result = 0;
2022 break;
2023 case NL80211_IFTYPE_MESH_POINT:
2024 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2025 break;
2026 case NL80211_IFTYPE_MONITOR:
2027 result = cfg80211_set_monitor_channel(rdev, &chandef);
2028 break;
2029 default:
2030 result = -EINVAL;
2031 }
2032
2033 return result;
2034 }
2035
2036 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2037 {
2038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2039 struct net_device *netdev = info->user_ptr[1];
2040
2041 return __nl80211_set_channel(rdev, netdev, info);
2042 }
2043
2044 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2045 {
2046 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047 struct net_device *dev = info->user_ptr[1];
2048 struct wireless_dev *wdev = dev->ieee80211_ptr;
2049 const u8 *bssid;
2050
2051 if (!info->attrs[NL80211_ATTR_MAC])
2052 return -EINVAL;
2053
2054 if (netif_running(dev))
2055 return -EBUSY;
2056
2057 if (!rdev->ops->set_wds_peer)
2058 return -EOPNOTSUPP;
2059
2060 if (wdev->iftype != NL80211_IFTYPE_WDS)
2061 return -EOPNOTSUPP;
2062
2063 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2064 return rdev_set_wds_peer(rdev, dev, bssid);
2065 }
2066
2067
2068 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2069 {
2070 struct cfg80211_registered_device *rdev;
2071 struct net_device *netdev = NULL;
2072 struct wireless_dev *wdev;
2073 int result = 0, rem_txq_params = 0;
2074 struct nlattr *nl_txq_params;
2075 u32 changed;
2076 u8 retry_short = 0, retry_long = 0;
2077 u32 frag_threshold = 0, rts_threshold = 0;
2078 u8 coverage_class = 0;
2079
2080 ASSERT_RTNL();
2081
2082 /*
2083 * Try to find the wiphy and netdev. Normally this
2084 * function shouldn't need the netdev, but this is
2085 * done for backward compatibility -- previously
2086 * setting the channel was done per wiphy, but now
2087 * it is per netdev. Previous userland like hostapd
2088 * also passed a netdev to set_wiphy, so that it is
2089 * possible to let that go to the right netdev!
2090 */
2091
2092 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2093 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2094
2095 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2096 if (netdev && netdev->ieee80211_ptr)
2097 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2098 else
2099 netdev = NULL;
2100 }
2101
2102 if (!netdev) {
2103 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2104 info->attrs);
2105 if (IS_ERR(rdev))
2106 return PTR_ERR(rdev);
2107 wdev = NULL;
2108 netdev = NULL;
2109 result = 0;
2110 } else
2111 wdev = netdev->ieee80211_ptr;
2112
2113 /*
2114 * end workaround code, by now the rdev is available
2115 * and locked, and wdev may or may not be NULL.
2116 */
2117
2118 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2119 result = cfg80211_dev_rename(
2120 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2121
2122 if (result)
2123 return result;
2124
2125 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2126 struct ieee80211_txq_params txq_params;
2127 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2128
2129 if (!rdev->ops->set_txq_params)
2130 return -EOPNOTSUPP;
2131
2132 if (!netdev)
2133 return -EINVAL;
2134
2135 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2136 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2137 return -EINVAL;
2138
2139 if (!netif_running(netdev))
2140 return -ENETDOWN;
2141
2142 nla_for_each_nested(nl_txq_params,
2143 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2144 rem_txq_params) {
2145 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2146 nla_data(nl_txq_params),
2147 nla_len(nl_txq_params),
2148 txq_params_policy);
2149 if (result)
2150 return result;
2151 result = parse_txq_params(tb, &txq_params);
2152 if (result)
2153 return result;
2154
2155 result = rdev_set_txq_params(rdev, netdev,
2156 &txq_params);
2157 if (result)
2158 return result;
2159 }
2160 }
2161
2162 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2163 result = __nl80211_set_channel(
2164 rdev,
2165 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2166 info);
2167 if (result)
2168 return result;
2169 }
2170
2171 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2172 struct wireless_dev *txp_wdev = wdev;
2173 enum nl80211_tx_power_setting type;
2174 int idx, mbm = 0;
2175
2176 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2177 txp_wdev = NULL;
2178
2179 if (!rdev->ops->set_tx_power)
2180 return -EOPNOTSUPP;
2181
2182 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2183 type = nla_get_u32(info->attrs[idx]);
2184
2185 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2186 (type != NL80211_TX_POWER_AUTOMATIC))
2187 return -EINVAL;
2188
2189 if (type != NL80211_TX_POWER_AUTOMATIC) {
2190 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2191 mbm = nla_get_u32(info->attrs[idx]);
2192 }
2193
2194 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2195 if (result)
2196 return result;
2197 }
2198
2199 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2200 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2201 u32 tx_ant, rx_ant;
2202 if ((!rdev->wiphy.available_antennas_tx &&
2203 !rdev->wiphy.available_antennas_rx) ||
2204 !rdev->ops->set_antenna)
2205 return -EOPNOTSUPP;
2206
2207 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2208 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2209
2210 /* reject antenna configurations which don't match the
2211 * available antenna masks, except for the "all" mask */
2212 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2213 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2214 return -EINVAL;
2215
2216 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2217 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2218
2219 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2220 if (result)
2221 return result;
2222 }
2223
2224 changed = 0;
2225
2226 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2227 retry_short = nla_get_u8(
2228 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2229 if (retry_short == 0)
2230 return -EINVAL;
2231
2232 changed |= WIPHY_PARAM_RETRY_SHORT;
2233 }
2234
2235 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2236 retry_long = nla_get_u8(
2237 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2238 if (retry_long == 0)
2239 return -EINVAL;
2240
2241 changed |= WIPHY_PARAM_RETRY_LONG;
2242 }
2243
2244 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2245 frag_threshold = nla_get_u32(
2246 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2247 if (frag_threshold < 256)
2248 return -EINVAL;
2249
2250 if (frag_threshold != (u32) -1) {
2251 /*
2252 * Fragments (apart from the last one) are required to
2253 * have even length. Make the fragmentation code
2254 * simpler by stripping LSB should someone try to use
2255 * odd threshold value.
2256 */
2257 frag_threshold &= ~0x1;
2258 }
2259 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2260 }
2261
2262 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2263 rts_threshold = nla_get_u32(
2264 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2265 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2266 }
2267
2268 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2269 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2270 return -EINVAL;
2271
2272 coverage_class = nla_get_u8(
2273 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2274 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2275 }
2276
2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2278 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2279 return -EOPNOTSUPP;
2280
2281 changed |= WIPHY_PARAM_DYN_ACK;
2282 }
2283
2284 if (changed) {
2285 u8 old_retry_short, old_retry_long;
2286 u32 old_frag_threshold, old_rts_threshold;
2287 u8 old_coverage_class;
2288
2289 if (!rdev->ops->set_wiphy_params)
2290 return -EOPNOTSUPP;
2291
2292 old_retry_short = rdev->wiphy.retry_short;
2293 old_retry_long = rdev->wiphy.retry_long;
2294 old_frag_threshold = rdev->wiphy.frag_threshold;
2295 old_rts_threshold = rdev->wiphy.rts_threshold;
2296 old_coverage_class = rdev->wiphy.coverage_class;
2297
2298 if (changed & WIPHY_PARAM_RETRY_SHORT)
2299 rdev->wiphy.retry_short = retry_short;
2300 if (changed & WIPHY_PARAM_RETRY_LONG)
2301 rdev->wiphy.retry_long = retry_long;
2302 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2303 rdev->wiphy.frag_threshold = frag_threshold;
2304 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2305 rdev->wiphy.rts_threshold = rts_threshold;
2306 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2307 rdev->wiphy.coverage_class = coverage_class;
2308
2309 result = rdev_set_wiphy_params(rdev, changed);
2310 if (result) {
2311 rdev->wiphy.retry_short = old_retry_short;
2312 rdev->wiphy.retry_long = old_retry_long;
2313 rdev->wiphy.frag_threshold = old_frag_threshold;
2314 rdev->wiphy.rts_threshold = old_rts_threshold;
2315 rdev->wiphy.coverage_class = old_coverage_class;
2316 }
2317 }
2318 return 0;
2319 }
2320
2321 static inline u64 wdev_id(struct wireless_dev *wdev)
2322 {
2323 return (u64)wdev->identifier |
2324 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2325 }
2326
2327 static int nl80211_send_chandef(struct sk_buff *msg,
2328 const struct cfg80211_chan_def *chandef)
2329 {
2330 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2331 return -EINVAL;
2332
2333 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2334 chandef->chan->center_freq))
2335 return -ENOBUFS;
2336 switch (chandef->width) {
2337 case NL80211_CHAN_WIDTH_20_NOHT:
2338 case NL80211_CHAN_WIDTH_20:
2339 case NL80211_CHAN_WIDTH_40:
2340 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2341 cfg80211_get_chandef_type(chandef)))
2342 return -ENOBUFS;
2343 break;
2344 default:
2345 break;
2346 }
2347 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2348 return -ENOBUFS;
2349 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2350 return -ENOBUFS;
2351 if (chandef->center_freq2 &&
2352 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2353 return -ENOBUFS;
2354 return 0;
2355 }
2356
2357 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2358 struct cfg80211_registered_device *rdev,
2359 struct wireless_dev *wdev, bool removal)
2360 {
2361 struct net_device *dev = wdev->netdev;
2362 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2363 void *hdr;
2364
2365 if (removal)
2366 cmd = NL80211_CMD_DEL_INTERFACE;
2367
2368 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2369 if (!hdr)
2370 return -1;
2371
2372 if (dev &&
2373 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2374 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2375 goto nla_put_failure;
2376
2377 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2378 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2379 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2380 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2381 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2382 rdev->devlist_generation ^
2383 (cfg80211_rdev_list_generation << 2)))
2384 goto nla_put_failure;
2385
2386 if (rdev->ops->get_channel) {
2387 int ret;
2388 struct cfg80211_chan_def chandef;
2389
2390 ret = rdev_get_channel(rdev, wdev, &chandef);
2391 if (ret == 0) {
2392 if (nl80211_send_chandef(msg, &chandef))
2393 goto nla_put_failure;
2394 }
2395 }
2396
2397 if (wdev->ssid_len) {
2398 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2399 goto nla_put_failure;
2400 }
2401
2402 return genlmsg_end(msg, hdr);
2403
2404 nla_put_failure:
2405 genlmsg_cancel(msg, hdr);
2406 return -EMSGSIZE;
2407 }
2408
2409 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2410 {
2411 int wp_idx = 0;
2412 int if_idx = 0;
2413 int wp_start = cb->args[0];
2414 int if_start = cb->args[1];
2415 struct cfg80211_registered_device *rdev;
2416 struct wireless_dev *wdev;
2417
2418 rtnl_lock();
2419 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2420 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2421 continue;
2422 if (wp_idx < wp_start) {
2423 wp_idx++;
2424 continue;
2425 }
2426 if_idx = 0;
2427
2428 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2429 if (if_idx < if_start) {
2430 if_idx++;
2431 continue;
2432 }
2433 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2434 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2435 rdev, wdev, false) < 0) {
2436 goto out;
2437 }
2438 if_idx++;
2439 }
2440
2441 wp_idx++;
2442 }
2443 out:
2444 rtnl_unlock();
2445
2446 cb->args[0] = wp_idx;
2447 cb->args[1] = if_idx;
2448
2449 return skb->len;
2450 }
2451
2452 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2453 {
2454 struct sk_buff *msg;
2455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2456 struct wireless_dev *wdev = info->user_ptr[1];
2457
2458 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2459 if (!msg)
2460 return -ENOMEM;
2461
2462 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2463 rdev, wdev, false) < 0) {
2464 nlmsg_free(msg);
2465 return -ENOBUFS;
2466 }
2467
2468 return genlmsg_reply(msg, info);
2469 }
2470
2471 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2472 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2473 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2474 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2475 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2476 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2477 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2478 };
2479
2480 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2481 {
2482 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2483 int flag;
2484
2485 *mntrflags = 0;
2486
2487 if (!nla)
2488 return -EINVAL;
2489
2490 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2491 nla, mntr_flags_policy))
2492 return -EINVAL;
2493
2494 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2495 if (flags[flag])
2496 *mntrflags |= (1<<flag);
2497
2498 return 0;
2499 }
2500
2501 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2502 struct net_device *netdev, u8 use_4addr,
2503 enum nl80211_iftype iftype)
2504 {
2505 if (!use_4addr) {
2506 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2507 return -EBUSY;
2508 return 0;
2509 }
2510
2511 switch (iftype) {
2512 case NL80211_IFTYPE_AP_VLAN:
2513 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2514 return 0;
2515 break;
2516 case NL80211_IFTYPE_STATION:
2517 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2518 return 0;
2519 break;
2520 default:
2521 break;
2522 }
2523
2524 return -EOPNOTSUPP;
2525 }
2526
2527 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2528 {
2529 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2530 struct vif_params params;
2531 int err;
2532 enum nl80211_iftype otype, ntype;
2533 struct net_device *dev = info->user_ptr[1];
2534 u32 _flags, *flags = NULL;
2535 bool change = false;
2536
2537 memset(&params, 0, sizeof(params));
2538
2539 otype = ntype = dev->ieee80211_ptr->iftype;
2540
2541 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2542 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2543 if (otype != ntype)
2544 change = true;
2545 if (ntype > NL80211_IFTYPE_MAX)
2546 return -EINVAL;
2547 }
2548
2549 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2550 struct wireless_dev *wdev = dev->ieee80211_ptr;
2551
2552 if (ntype != NL80211_IFTYPE_MESH_POINT)
2553 return -EINVAL;
2554 if (netif_running(dev))
2555 return -EBUSY;
2556
2557 wdev_lock(wdev);
2558 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2559 IEEE80211_MAX_MESH_ID_LEN);
2560 wdev->mesh_id_up_len =
2561 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2562 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2563 wdev->mesh_id_up_len);
2564 wdev_unlock(wdev);
2565 }
2566
2567 if (info->attrs[NL80211_ATTR_4ADDR]) {
2568 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2569 change = true;
2570 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2571 if (err)
2572 return err;
2573 } else {
2574 params.use_4addr = -1;
2575 }
2576
2577 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2578 if (ntype != NL80211_IFTYPE_MONITOR)
2579 return -EINVAL;
2580 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2581 &_flags);
2582 if (err)
2583 return err;
2584
2585 flags = &_flags;
2586 change = true;
2587 }
2588
2589 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2590 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2591 return -EOPNOTSUPP;
2592
2593 if (change)
2594 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2595 else
2596 err = 0;
2597
2598 if (!err && params.use_4addr != -1)
2599 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2600
2601 return err;
2602 }
2603
2604 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2605 {
2606 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2607 struct vif_params params;
2608 struct wireless_dev *wdev;
2609 struct sk_buff *msg, *event;
2610 int err;
2611 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2612 u32 flags;
2613
2614 /* to avoid failing a new interface creation due to pending removal */
2615 cfg80211_destroy_ifaces(rdev);
2616
2617 memset(&params, 0, sizeof(params));
2618
2619 if (!info->attrs[NL80211_ATTR_IFNAME])
2620 return -EINVAL;
2621
2622 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2623 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2624 if (type > NL80211_IFTYPE_MAX)
2625 return -EINVAL;
2626 }
2627
2628 if (!rdev->ops->add_virtual_intf ||
2629 !(rdev->wiphy.interface_modes & (1 << type)))
2630 return -EOPNOTSUPP;
2631
2632 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2633 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2634 info->attrs[NL80211_ATTR_MAC]) {
2635 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2636 ETH_ALEN);
2637 if (!is_valid_ether_addr(params.macaddr))
2638 return -EADDRNOTAVAIL;
2639 }
2640
2641 if (info->attrs[NL80211_ATTR_4ADDR]) {
2642 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2643 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2644 if (err)
2645 return err;
2646 }
2647
2648 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2649 if (!msg)
2650 return -ENOMEM;
2651
2652 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2653 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2654 &flags);
2655
2656 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2657 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2658 return -EOPNOTSUPP;
2659
2660 wdev = rdev_add_virtual_intf(rdev,
2661 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2662 type, err ? NULL : &flags, &params);
2663 if (WARN_ON(!wdev)) {
2664 nlmsg_free(msg);
2665 return -EPROTO;
2666 } else if (IS_ERR(wdev)) {
2667 nlmsg_free(msg);
2668 return PTR_ERR(wdev);
2669 }
2670
2671 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2672 wdev->owner_nlportid = info->snd_portid;
2673
2674 switch (type) {
2675 case NL80211_IFTYPE_MESH_POINT:
2676 if (!info->attrs[NL80211_ATTR_MESH_ID])
2677 break;
2678 wdev_lock(wdev);
2679 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2680 IEEE80211_MAX_MESH_ID_LEN);
2681 wdev->mesh_id_up_len =
2682 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2683 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2684 wdev->mesh_id_up_len);
2685 wdev_unlock(wdev);
2686 break;
2687 case NL80211_IFTYPE_P2P_DEVICE:
2688 /*
2689 * P2P Device doesn't have a netdev, so doesn't go
2690 * through the netdev notifier and must be added here
2691 */
2692 mutex_init(&wdev->mtx);
2693 INIT_LIST_HEAD(&wdev->event_list);
2694 spin_lock_init(&wdev->event_lock);
2695 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2696 spin_lock_init(&wdev->mgmt_registrations_lock);
2697
2698 wdev->identifier = ++rdev->wdev_id;
2699 list_add_rcu(&wdev->list, &rdev->wdev_list);
2700 rdev->devlist_generation++;
2701 break;
2702 default:
2703 break;
2704 }
2705
2706 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2707 rdev, wdev, false) < 0) {
2708 nlmsg_free(msg);
2709 return -ENOBUFS;
2710 }
2711
2712 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2713 if (event) {
2714 if (nl80211_send_iface(event, 0, 0, 0,
2715 rdev, wdev, false) < 0) {
2716 nlmsg_free(event);
2717 goto out;
2718 }
2719
2720 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2721 event, 0, NL80211_MCGRP_CONFIG,
2722 GFP_KERNEL);
2723 }
2724
2725 out:
2726 return genlmsg_reply(msg, info);
2727 }
2728
2729 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2730 {
2731 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2732 struct wireless_dev *wdev = info->user_ptr[1];
2733 struct sk_buff *msg;
2734 int status;
2735
2736 if (!rdev->ops->del_virtual_intf)
2737 return -EOPNOTSUPP;
2738
2739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2740 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2741 nlmsg_free(msg);
2742 msg = NULL;
2743 }
2744
2745 /*
2746 * If we remove a wireless device without a netdev then clear
2747 * user_ptr[1] so that nl80211_post_doit won't dereference it
2748 * to check if it needs to do dev_put(). Otherwise it crashes
2749 * since the wdev has been freed, unlike with a netdev where
2750 * we need the dev_put() for the netdev to really be freed.
2751 */
2752 if (!wdev->netdev)
2753 info->user_ptr[1] = NULL;
2754
2755 status = rdev_del_virtual_intf(rdev, wdev);
2756 if (status >= 0 && msg)
2757 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2758 msg, 0, NL80211_MCGRP_CONFIG,
2759 GFP_KERNEL);
2760 else
2761 nlmsg_free(msg);
2762
2763 return status;
2764 }
2765
2766 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2767 {
2768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2769 struct net_device *dev = info->user_ptr[1];
2770 u16 noack_map;
2771
2772 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2773 return -EINVAL;
2774
2775 if (!rdev->ops->set_noack_map)
2776 return -EOPNOTSUPP;
2777
2778 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2779
2780 return rdev_set_noack_map(rdev, dev, noack_map);
2781 }
2782
2783 struct get_key_cookie {
2784 struct sk_buff *msg;
2785 int error;
2786 int idx;
2787 };
2788
2789 static void get_key_callback(void *c, struct key_params *params)
2790 {
2791 struct nlattr *key;
2792 struct get_key_cookie *cookie = c;
2793
2794 if ((params->key &&
2795 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2796 params->key_len, params->key)) ||
2797 (params->seq &&
2798 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2799 params->seq_len, params->seq)) ||
2800 (params->cipher &&
2801 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2802 params->cipher)))
2803 goto nla_put_failure;
2804
2805 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2806 if (!key)
2807 goto nla_put_failure;
2808
2809 if ((params->key &&
2810 nla_put(cookie->msg, NL80211_KEY_DATA,
2811 params->key_len, params->key)) ||
2812 (params->seq &&
2813 nla_put(cookie->msg, NL80211_KEY_SEQ,
2814 params->seq_len, params->seq)) ||
2815 (params->cipher &&
2816 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2817 params->cipher)))
2818 goto nla_put_failure;
2819
2820 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2821 goto nla_put_failure;
2822
2823 nla_nest_end(cookie->msg, key);
2824
2825 return;
2826 nla_put_failure:
2827 cookie->error = 1;
2828 }
2829
2830 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2831 {
2832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2833 int err;
2834 struct net_device *dev = info->user_ptr[1];
2835 u8 key_idx = 0;
2836 const u8 *mac_addr = NULL;
2837 bool pairwise;
2838 struct get_key_cookie cookie = {
2839 .error = 0,
2840 };
2841 void *hdr;
2842 struct sk_buff *msg;
2843
2844 if (info->attrs[NL80211_ATTR_KEY_IDX])
2845 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2846
2847 if (key_idx > 5)
2848 return -EINVAL;
2849
2850 if (info->attrs[NL80211_ATTR_MAC])
2851 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2852
2853 pairwise = !!mac_addr;
2854 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2855 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2856 if (kt >= NUM_NL80211_KEYTYPES)
2857 return -EINVAL;
2858 if (kt != NL80211_KEYTYPE_GROUP &&
2859 kt != NL80211_KEYTYPE_PAIRWISE)
2860 return -EINVAL;
2861 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2862 }
2863
2864 if (!rdev->ops->get_key)
2865 return -EOPNOTSUPP;
2866
2867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2868 if (!msg)
2869 return -ENOMEM;
2870
2871 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2872 NL80211_CMD_NEW_KEY);
2873 if (!hdr)
2874 goto nla_put_failure;
2875
2876 cookie.msg = msg;
2877 cookie.idx = key_idx;
2878
2879 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2880 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2881 goto nla_put_failure;
2882 if (mac_addr &&
2883 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2884 goto nla_put_failure;
2885
2886 if (pairwise && mac_addr &&
2887 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2888 return -ENOENT;
2889
2890 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2891 get_key_callback);
2892
2893 if (err)
2894 goto free_msg;
2895
2896 if (cookie.error)
2897 goto nla_put_failure;
2898
2899 genlmsg_end(msg, hdr);
2900 return genlmsg_reply(msg, info);
2901
2902 nla_put_failure:
2903 err = -ENOBUFS;
2904 free_msg:
2905 nlmsg_free(msg);
2906 return err;
2907 }
2908
2909 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2910 {
2911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912 struct key_parse key;
2913 int err;
2914 struct net_device *dev = info->user_ptr[1];
2915
2916 err = nl80211_parse_key(info, &key);
2917 if (err)
2918 return err;
2919
2920 if (key.idx < 0)
2921 return -EINVAL;
2922
2923 /* only support setting default key */
2924 if (!key.def && !key.defmgmt)
2925 return -EINVAL;
2926
2927 wdev_lock(dev->ieee80211_ptr);
2928
2929 if (key.def) {
2930 if (!rdev->ops->set_default_key) {
2931 err = -EOPNOTSUPP;
2932 goto out;
2933 }
2934
2935 err = nl80211_key_allowed(dev->ieee80211_ptr);
2936 if (err)
2937 goto out;
2938
2939 err = rdev_set_default_key(rdev, dev, key.idx,
2940 key.def_uni, key.def_multi);
2941
2942 if (err)
2943 goto out;
2944
2945 #ifdef CONFIG_CFG80211_WEXT
2946 dev->ieee80211_ptr->wext.default_key = key.idx;
2947 #endif
2948 } else {
2949 if (key.def_uni || !key.def_multi) {
2950 err = -EINVAL;
2951 goto out;
2952 }
2953
2954 if (!rdev->ops->set_default_mgmt_key) {
2955 err = -EOPNOTSUPP;
2956 goto out;
2957 }
2958
2959 err = nl80211_key_allowed(dev->ieee80211_ptr);
2960 if (err)
2961 goto out;
2962
2963 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2964 if (err)
2965 goto out;
2966
2967 #ifdef CONFIG_CFG80211_WEXT
2968 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2969 #endif
2970 }
2971
2972 out:
2973 wdev_unlock(dev->ieee80211_ptr);
2974
2975 return err;
2976 }
2977
2978 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2979 {
2980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2981 int err;
2982 struct net_device *dev = info->user_ptr[1];
2983 struct key_parse key;
2984 const u8 *mac_addr = NULL;
2985
2986 err = nl80211_parse_key(info, &key);
2987 if (err)
2988 return err;
2989
2990 if (!key.p.key)
2991 return -EINVAL;
2992
2993 if (info->attrs[NL80211_ATTR_MAC])
2994 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2995
2996 if (key.type == -1) {
2997 if (mac_addr)
2998 key.type = NL80211_KEYTYPE_PAIRWISE;
2999 else
3000 key.type = NL80211_KEYTYPE_GROUP;
3001 }
3002
3003 /* for now */
3004 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3005 key.type != NL80211_KEYTYPE_GROUP)
3006 return -EINVAL;
3007
3008 if (!rdev->ops->add_key)
3009 return -EOPNOTSUPP;
3010
3011 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3012 key.type == NL80211_KEYTYPE_PAIRWISE,
3013 mac_addr))
3014 return -EINVAL;
3015
3016 wdev_lock(dev->ieee80211_ptr);
3017 err = nl80211_key_allowed(dev->ieee80211_ptr);
3018 if (!err)
3019 err = rdev_add_key(rdev, dev, key.idx,
3020 key.type == NL80211_KEYTYPE_PAIRWISE,
3021 mac_addr, &key.p);
3022 wdev_unlock(dev->ieee80211_ptr);
3023
3024 return err;
3025 }
3026
3027 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3028 {
3029 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3030 int err;
3031 struct net_device *dev = info->user_ptr[1];
3032 u8 *mac_addr = NULL;
3033 struct key_parse key;
3034
3035 err = nl80211_parse_key(info, &key);
3036 if (err)
3037 return err;
3038
3039 if (info->attrs[NL80211_ATTR_MAC])
3040 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3041
3042 if (key.type == -1) {
3043 if (mac_addr)
3044 key.type = NL80211_KEYTYPE_PAIRWISE;
3045 else
3046 key.type = NL80211_KEYTYPE_GROUP;
3047 }
3048
3049 /* for now */
3050 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3051 key.type != NL80211_KEYTYPE_GROUP)
3052 return -EINVAL;
3053
3054 if (!rdev->ops->del_key)
3055 return -EOPNOTSUPP;
3056
3057 wdev_lock(dev->ieee80211_ptr);
3058 err = nl80211_key_allowed(dev->ieee80211_ptr);
3059
3060 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3061 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3062 err = -ENOENT;
3063
3064 if (!err)
3065 err = rdev_del_key(rdev, dev, key.idx,
3066 key.type == NL80211_KEYTYPE_PAIRWISE,
3067 mac_addr);
3068
3069 #ifdef CONFIG_CFG80211_WEXT
3070 if (!err) {
3071 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3072 dev->ieee80211_ptr->wext.default_key = -1;
3073 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3074 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3075 }
3076 #endif
3077 wdev_unlock(dev->ieee80211_ptr);
3078
3079 return err;
3080 }
3081
3082 /* This function returns an error or the number of nested attributes */
3083 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3084 {
3085 struct nlattr *attr;
3086 int n_entries = 0, tmp;
3087
3088 nla_for_each_nested(attr, nl_attr, tmp) {
3089 if (nla_len(attr) != ETH_ALEN)
3090 return -EINVAL;
3091
3092 n_entries++;
3093 }
3094
3095 return n_entries;
3096 }
3097
3098 /*
3099 * This function parses ACL information and allocates memory for ACL data.
3100 * On successful return, the calling function is responsible to free the
3101 * ACL buffer returned by this function.
3102 */
3103 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3104 struct genl_info *info)
3105 {
3106 enum nl80211_acl_policy acl_policy;
3107 struct nlattr *attr;
3108 struct cfg80211_acl_data *acl;
3109 int i = 0, n_entries, tmp;
3110
3111 if (!wiphy->max_acl_mac_addrs)
3112 return ERR_PTR(-EOPNOTSUPP);
3113
3114 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3115 return ERR_PTR(-EINVAL);
3116
3117 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3118 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3119 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3120 return ERR_PTR(-EINVAL);
3121
3122 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3123 return ERR_PTR(-EINVAL);
3124
3125 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3126 if (n_entries < 0)
3127 return ERR_PTR(n_entries);
3128
3129 if (n_entries > wiphy->max_acl_mac_addrs)
3130 return ERR_PTR(-ENOTSUPP);
3131
3132 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3133 GFP_KERNEL);
3134 if (!acl)
3135 return ERR_PTR(-ENOMEM);
3136
3137 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3138 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3139 i++;
3140 }
3141
3142 acl->n_acl_entries = n_entries;
3143 acl->acl_policy = acl_policy;
3144
3145 return acl;
3146 }
3147
3148 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3149 {
3150 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3151 struct net_device *dev = info->user_ptr[1];
3152 struct cfg80211_acl_data *acl;
3153 int err;
3154
3155 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3156 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3157 return -EOPNOTSUPP;
3158
3159 if (!dev->ieee80211_ptr->beacon_interval)
3160 return -EINVAL;
3161
3162 acl = parse_acl_data(&rdev->wiphy, info);
3163 if (IS_ERR(acl))
3164 return PTR_ERR(acl);
3165
3166 err = rdev_set_mac_acl(rdev, dev, acl);
3167
3168 kfree(acl);
3169
3170 return err;
3171 }
3172
3173 static int nl80211_parse_beacon(struct nlattr *attrs[],
3174 struct cfg80211_beacon_data *bcn)
3175 {
3176 bool haveinfo = false;
3177
3178 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3179 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3180 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3181 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3182 return -EINVAL;
3183
3184 memset(bcn, 0, sizeof(*bcn));
3185
3186 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3187 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3188 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3189 if (!bcn->head_len)
3190 return -EINVAL;
3191 haveinfo = true;
3192 }
3193
3194 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3195 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3196 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3197 haveinfo = true;
3198 }
3199
3200 if (!haveinfo)
3201 return -EINVAL;
3202
3203 if (attrs[NL80211_ATTR_IE]) {
3204 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3205 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3206 }
3207
3208 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3209 bcn->proberesp_ies =
3210 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3211 bcn->proberesp_ies_len =
3212 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3213 }
3214
3215 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3216 bcn->assocresp_ies =
3217 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3218 bcn->assocresp_ies_len =
3219 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3220 }
3221
3222 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3223 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3224 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3225 }
3226
3227 return 0;
3228 }
3229
3230 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3231 struct cfg80211_ap_settings *params)
3232 {
3233 struct wireless_dev *wdev;
3234 bool ret = false;
3235
3236 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3237 if (wdev->iftype != NL80211_IFTYPE_AP &&
3238 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3239 continue;
3240
3241 if (!wdev->preset_chandef.chan)
3242 continue;
3243
3244 params->chandef = wdev->preset_chandef;
3245 ret = true;
3246 break;
3247 }
3248
3249 return ret;
3250 }
3251
3252 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3253 enum nl80211_auth_type auth_type,
3254 enum nl80211_commands cmd)
3255 {
3256 if (auth_type > NL80211_AUTHTYPE_MAX)
3257 return false;
3258
3259 switch (cmd) {
3260 case NL80211_CMD_AUTHENTICATE:
3261 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3262 auth_type == NL80211_AUTHTYPE_SAE)
3263 return false;
3264 return true;
3265 case NL80211_CMD_CONNECT:
3266 case NL80211_CMD_START_AP:
3267 /* SAE not supported yet */
3268 if (auth_type == NL80211_AUTHTYPE_SAE)
3269 return false;
3270 return true;
3271 default:
3272 return false;
3273 }
3274 }
3275
3276 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3277 {
3278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3279 struct net_device *dev = info->user_ptr[1];
3280 struct wireless_dev *wdev = dev->ieee80211_ptr;
3281 struct cfg80211_ap_settings params;
3282 int err;
3283
3284 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3285 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3286 return -EOPNOTSUPP;
3287
3288 if (!rdev->ops->start_ap)
3289 return -EOPNOTSUPP;
3290
3291 if (wdev->beacon_interval)
3292 return -EALREADY;
3293
3294 memset(&params, 0, sizeof(params));
3295
3296 /* these are required for START_AP */
3297 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3298 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3299 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3300 return -EINVAL;
3301
3302 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3303 if (err)
3304 return err;
3305
3306 params.beacon_interval =
3307 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3308 params.dtim_period =
3309 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3310
3311 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3312 if (err)
3313 return err;
3314
3315 /*
3316 * In theory, some of these attributes should be required here
3317 * but since they were not used when the command was originally
3318 * added, keep them optional for old user space programs to let
3319 * them continue to work with drivers that do not need the
3320 * additional information -- drivers must check!
3321 */
3322 if (info->attrs[NL80211_ATTR_SSID]) {
3323 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3324 params.ssid_len =
3325 nla_len(info->attrs[NL80211_ATTR_SSID]);
3326 if (params.ssid_len == 0 ||
3327 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3328 return -EINVAL;
3329 }
3330
3331 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3332 params.hidden_ssid = nla_get_u32(
3333 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3334 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3335 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3336 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3337 return -EINVAL;
3338 }
3339
3340 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3341
3342 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3343 params.auth_type = nla_get_u32(
3344 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3345 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3346 NL80211_CMD_START_AP))
3347 return -EINVAL;
3348 } else
3349 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3350
3351 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3352 NL80211_MAX_NR_CIPHER_SUITES);
3353 if (err)
3354 return err;
3355
3356 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3357 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3358 return -EOPNOTSUPP;
3359 params.inactivity_timeout = nla_get_u16(
3360 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3361 }
3362
3363 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3364 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3365 return -EINVAL;
3366 params.p2p_ctwindow =
3367 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3368 if (params.p2p_ctwindow > 127)
3369 return -EINVAL;
3370 if (params.p2p_ctwindow != 0 &&
3371 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3372 return -EINVAL;
3373 }
3374
3375 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3376 u8 tmp;
3377
3378 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3379 return -EINVAL;
3380 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3381 if (tmp > 1)
3382 return -EINVAL;
3383 params.p2p_opp_ps = tmp;
3384 if (params.p2p_opp_ps != 0 &&
3385 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3386 return -EINVAL;
3387 }
3388
3389 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3390 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3391 if (err)
3392 return err;
3393 } else if (wdev->preset_chandef.chan) {
3394 params.chandef = wdev->preset_chandef;
3395 } else if (!nl80211_get_ap_channel(rdev, &params))
3396 return -EINVAL;
3397
3398 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3399 wdev->iftype))
3400 return -EINVAL;
3401
3402 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3403 params.acl = parse_acl_data(&rdev->wiphy, info);
3404 if (IS_ERR(params.acl))
3405 return PTR_ERR(params.acl);
3406 }
3407
3408 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3409 params.smps_mode =
3410 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3411 switch (params.smps_mode) {
3412 case NL80211_SMPS_OFF:
3413 break;
3414 case NL80211_SMPS_STATIC:
3415 if (!(rdev->wiphy.features &
3416 NL80211_FEATURE_STATIC_SMPS))
3417 return -EINVAL;
3418 break;
3419 case NL80211_SMPS_DYNAMIC:
3420 if (!(rdev->wiphy.features &
3421 NL80211_FEATURE_DYNAMIC_SMPS))
3422 return -EINVAL;
3423 break;
3424 default:
3425 return -EINVAL;
3426 }
3427 } else {
3428 params.smps_mode = NL80211_SMPS_OFF;
3429 }
3430
3431 wdev_lock(wdev);
3432 err = rdev_start_ap(rdev, dev, &params);
3433 if (!err) {
3434 wdev->preset_chandef = params.chandef;
3435 wdev->beacon_interval = params.beacon_interval;
3436 wdev->chandef = params.chandef;
3437 wdev->ssid_len = params.ssid_len;
3438 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3439 }
3440 wdev_unlock(wdev);
3441
3442 kfree(params.acl);
3443
3444 return err;
3445 }
3446
3447 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3448 {
3449 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3450 struct net_device *dev = info->user_ptr[1];
3451 struct wireless_dev *wdev = dev->ieee80211_ptr;
3452 struct cfg80211_beacon_data params;
3453 int err;
3454
3455 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3456 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3457 return -EOPNOTSUPP;
3458
3459 if (!rdev->ops->change_beacon)
3460 return -EOPNOTSUPP;
3461
3462 if (!wdev->beacon_interval)
3463 return -EINVAL;
3464
3465 err = nl80211_parse_beacon(info->attrs, &params);
3466 if (err)
3467 return err;
3468
3469 wdev_lock(wdev);
3470 err = rdev_change_beacon(rdev, dev, &params);
3471 wdev_unlock(wdev);
3472
3473 return err;
3474 }
3475
3476 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3477 {
3478 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3479 struct net_device *dev = info->user_ptr[1];
3480
3481 return cfg80211_stop_ap(rdev, dev, false);
3482 }
3483
3484 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3485 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3486 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3487 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3488 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3489 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3490 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3491 };
3492
3493 static int parse_station_flags(struct genl_info *info,
3494 enum nl80211_iftype iftype,
3495 struct station_parameters *params)
3496 {
3497 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3498 struct nlattr *nla;
3499 int flag;
3500
3501 /*
3502 * Try parsing the new attribute first so userspace
3503 * can specify both for older kernels.
3504 */
3505 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3506 if (nla) {
3507 struct nl80211_sta_flag_update *sta_flags;
3508
3509 sta_flags = nla_data(nla);
3510 params->sta_flags_mask = sta_flags->mask;
3511 params->sta_flags_set = sta_flags->set;
3512 params->sta_flags_set &= params->sta_flags_mask;
3513 if ((params->sta_flags_mask |
3514 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3515 return -EINVAL;
3516 return 0;
3517 }
3518
3519 /* if present, parse the old attribute */
3520
3521 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3522 if (!nla)
3523 return 0;
3524
3525 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3526 nla, sta_flags_policy))
3527 return -EINVAL;
3528
3529 /*
3530 * Only allow certain flags for interface types so that
3531 * other attributes are silently ignored. Remember that
3532 * this is backward compatibility code with old userspace
3533 * and shouldn't be hit in other cases anyway.
3534 */
3535 switch (iftype) {
3536 case NL80211_IFTYPE_AP:
3537 case NL80211_IFTYPE_AP_VLAN:
3538 case NL80211_IFTYPE_P2P_GO:
3539 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3540 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3541 BIT(NL80211_STA_FLAG_WME) |
3542 BIT(NL80211_STA_FLAG_MFP);
3543 break;
3544 case NL80211_IFTYPE_P2P_CLIENT:
3545 case NL80211_IFTYPE_STATION:
3546 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3547 BIT(NL80211_STA_FLAG_TDLS_PEER);
3548 break;
3549 case NL80211_IFTYPE_MESH_POINT:
3550 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3551 BIT(NL80211_STA_FLAG_MFP) |
3552 BIT(NL80211_STA_FLAG_AUTHORIZED);
3553 default:
3554 return -EINVAL;
3555 }
3556
3557 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3558 if (flags[flag]) {
3559 params->sta_flags_set |= (1<<flag);
3560
3561 /* no longer support new API additions in old API */
3562 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3563 return -EINVAL;
3564 }
3565 }
3566
3567 return 0;
3568 }
3569
3570 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3571 int attr)
3572 {
3573 struct nlattr *rate;
3574 u32 bitrate;
3575 u16 bitrate_compat;
3576
3577 rate = nla_nest_start(msg, attr);
3578 if (!rate)
3579 return false;
3580
3581 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3582 bitrate = cfg80211_calculate_bitrate(info);
3583 /* report 16-bit bitrate only if we can */
3584 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3585 if (bitrate > 0 &&
3586 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3587 return false;
3588 if (bitrate_compat > 0 &&
3589 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3590 return false;
3591
3592 if (info->flags & RATE_INFO_FLAGS_MCS) {
3593 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3594 return false;
3595 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3596 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3597 return false;
3598 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3599 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3600 return false;
3601 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3602 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3603 return false;
3604 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3605 return false;
3606 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3607 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3608 return false;
3609 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3610 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3611 return false;
3612 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3613 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3614 return false;
3615 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3616 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3617 return false;
3618 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3619 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3620 return false;
3621 }
3622
3623 nla_nest_end(msg, rate);
3624 return true;
3625 }
3626
3627 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3628 int id)
3629 {
3630 void *attr;
3631 int i = 0;
3632
3633 if (!mask)
3634 return true;
3635
3636 attr = nla_nest_start(msg, id);
3637 if (!attr)
3638 return false;
3639
3640 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3641 if (!(mask & BIT(i)))
3642 continue;
3643
3644 if (nla_put_u8(msg, i, signal[i]))
3645 return false;
3646 }
3647
3648 nla_nest_end(msg, attr);
3649
3650 return true;
3651 }
3652
3653 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3654 int flags,
3655 struct cfg80211_registered_device *rdev,
3656 struct net_device *dev,
3657 const u8 *mac_addr, struct station_info *sinfo)
3658 {
3659 void *hdr;
3660 struct nlattr *sinfoattr, *bss_param;
3661
3662 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3663 if (!hdr)
3664 return -1;
3665
3666 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3667 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3668 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3669 goto nla_put_failure;
3670
3671 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3672 if (!sinfoattr)
3673 goto nla_put_failure;
3674 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3675 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3676 sinfo->connected_time))
3677 goto nla_put_failure;
3678 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3679 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3680 sinfo->inactive_time))
3681 goto nla_put_failure;
3682 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3683 STATION_INFO_RX_BYTES64)) &&
3684 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3685 (u32)sinfo->rx_bytes))
3686 goto nla_put_failure;
3687 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3688 STATION_INFO_TX_BYTES64)) &&
3689 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3690 (u32)sinfo->tx_bytes))
3691 goto nla_put_failure;
3692 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3693 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3694 sinfo->rx_bytes))
3695 goto nla_put_failure;
3696 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3697 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3698 sinfo->tx_bytes))
3699 goto nla_put_failure;
3700 if ((sinfo->filled & STATION_INFO_LLID) &&
3701 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3702 goto nla_put_failure;
3703 if ((sinfo->filled & STATION_INFO_PLID) &&
3704 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3705 goto nla_put_failure;
3706 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3707 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3708 sinfo->plink_state))
3709 goto nla_put_failure;
3710 switch (rdev->wiphy.signal_type) {
3711 case CFG80211_SIGNAL_TYPE_MBM:
3712 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3713 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3714 sinfo->signal))
3715 goto nla_put_failure;
3716 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3717 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3718 sinfo->signal_avg))
3719 goto nla_put_failure;
3720 break;
3721 default:
3722 break;
3723 }
3724 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3725 if (!nl80211_put_signal(msg, sinfo->chains,
3726 sinfo->chain_signal,
3727 NL80211_STA_INFO_CHAIN_SIGNAL))
3728 goto nla_put_failure;
3729 }
3730 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3731 if (!nl80211_put_signal(msg, sinfo->chains,
3732 sinfo->chain_signal_avg,
3733 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3734 goto nla_put_failure;
3735 }
3736 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3737 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3738 NL80211_STA_INFO_TX_BITRATE))
3739 goto nla_put_failure;
3740 }
3741 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3742 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3743 NL80211_STA_INFO_RX_BITRATE))
3744 goto nla_put_failure;
3745 }
3746 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3747 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3748 sinfo->rx_packets))
3749 goto nla_put_failure;
3750 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3751 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3752 sinfo->tx_packets))
3753 goto nla_put_failure;
3754 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3755 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3756 sinfo->tx_retries))
3757 goto nla_put_failure;
3758 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3759 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3760 sinfo->tx_failed))
3761 goto nla_put_failure;
3762 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3763 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3764 sinfo->expected_throughput))
3765 goto nla_put_failure;
3766 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3767 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3768 sinfo->beacon_loss_count))
3769 goto nla_put_failure;
3770 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3771 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3772 sinfo->local_pm))
3773 goto nla_put_failure;
3774 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3775 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3776 sinfo->peer_pm))
3777 goto nla_put_failure;
3778 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3779 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3780 sinfo->nonpeer_pm))
3781 goto nla_put_failure;
3782 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3783 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3784 if (!bss_param)
3785 goto nla_put_failure;
3786
3787 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3788 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3789 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3790 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3791 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3792 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3793 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3794 sinfo->bss_param.dtim_period) ||
3795 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3796 sinfo->bss_param.beacon_interval))
3797 goto nla_put_failure;
3798
3799 nla_nest_end(msg, bss_param);
3800 }
3801 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3802 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3803 sizeof(struct nl80211_sta_flag_update),
3804 &sinfo->sta_flags))
3805 goto nla_put_failure;
3806 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3807 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3808 sinfo->t_offset))
3809 goto nla_put_failure;
3810 nla_nest_end(msg, sinfoattr);
3811
3812 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3813 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3814 sinfo->assoc_req_ies))
3815 goto nla_put_failure;
3816
3817 return genlmsg_end(msg, hdr);
3818
3819 nla_put_failure:
3820 genlmsg_cancel(msg, hdr);
3821 return -EMSGSIZE;
3822 }
3823
3824 static int nl80211_dump_station(struct sk_buff *skb,
3825 struct netlink_callback *cb)
3826 {
3827 struct station_info sinfo;
3828 struct cfg80211_registered_device *rdev;
3829 struct wireless_dev *wdev;
3830 u8 mac_addr[ETH_ALEN];
3831 int sta_idx = cb->args[2];
3832 int err;
3833
3834 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3835 if (err)
3836 return err;
3837
3838 if (!wdev->netdev) {
3839 err = -EINVAL;
3840 goto out_err;
3841 }
3842
3843 if (!rdev->ops->dump_station) {
3844 err = -EOPNOTSUPP;
3845 goto out_err;
3846 }
3847
3848 while (1) {
3849 memset(&sinfo, 0, sizeof(sinfo));
3850 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3851 mac_addr, &sinfo);
3852 if (err == -ENOENT)
3853 break;
3854 if (err)
3855 goto out_err;
3856
3857 if (nl80211_send_station(skb,
3858 NETLINK_CB(cb->skb).portid,
3859 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3860 rdev, wdev->netdev, mac_addr,
3861 &sinfo) < 0)
3862 goto out;
3863
3864 sta_idx++;
3865 }
3866
3867
3868 out:
3869 cb->args[2] = sta_idx;
3870 err = skb->len;
3871 out_err:
3872 nl80211_finish_wdev_dump(rdev);
3873
3874 return err;
3875 }
3876
3877 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3878 {
3879 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3880 struct net_device *dev = info->user_ptr[1];
3881 struct station_info sinfo;
3882 struct sk_buff *msg;
3883 u8 *mac_addr = NULL;
3884 int err;
3885
3886 memset(&sinfo, 0, sizeof(sinfo));
3887
3888 if (!info->attrs[NL80211_ATTR_MAC])
3889 return -EINVAL;
3890
3891 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3892
3893 if (!rdev->ops->get_station)
3894 return -EOPNOTSUPP;
3895
3896 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3897 if (err)
3898 return err;
3899
3900 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3901 if (!msg)
3902 return -ENOMEM;
3903
3904 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3905 rdev, dev, mac_addr, &sinfo) < 0) {
3906 nlmsg_free(msg);
3907 return -ENOBUFS;
3908 }
3909
3910 return genlmsg_reply(msg, info);
3911 }
3912
3913 int cfg80211_check_station_change(struct wiphy *wiphy,
3914 struct station_parameters *params,
3915 enum cfg80211_station_type statype)
3916 {
3917 if (params->listen_interval != -1)
3918 return -EINVAL;
3919 if (params->aid &&
3920 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3921 return -EINVAL;
3922
3923 /* When you run into this, adjust the code below for the new flag */
3924 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3925
3926 switch (statype) {
3927 case CFG80211_STA_MESH_PEER_KERNEL:
3928 case CFG80211_STA_MESH_PEER_USER:
3929 /*
3930 * No ignoring the TDLS flag here -- the userspace mesh
3931 * code doesn't have the bug of including TDLS in the
3932 * mask everywhere.
3933 */
3934 if (params->sta_flags_mask &
3935 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3936 BIT(NL80211_STA_FLAG_MFP) |
3937 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3938 return -EINVAL;
3939 break;
3940 case CFG80211_STA_TDLS_PEER_SETUP:
3941 case CFG80211_STA_TDLS_PEER_ACTIVE:
3942 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3943 return -EINVAL;
3944 /* ignore since it can't change */
3945 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3946 break;
3947 default:
3948 /* disallow mesh-specific things */
3949 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3950 return -EINVAL;
3951 if (params->local_pm)
3952 return -EINVAL;
3953 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3954 return -EINVAL;
3955 }
3956
3957 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3958 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3959 /* TDLS can't be set, ... */
3960 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3961 return -EINVAL;
3962 /*
3963 * ... but don't bother the driver with it. This works around
3964 * a hostapd/wpa_supplicant issue -- it always includes the
3965 * TLDS_PEER flag in the mask even for AP mode.
3966 */
3967 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3968 }
3969
3970 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3971 /* reject other things that can't change */
3972 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3973 return -EINVAL;
3974 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3975 return -EINVAL;
3976 if (params->supported_rates)
3977 return -EINVAL;
3978 if (params->ext_capab || params->ht_capa || params->vht_capa)
3979 return -EINVAL;
3980 }
3981
3982 if (statype != CFG80211_STA_AP_CLIENT) {
3983 if (params->vlan)
3984 return -EINVAL;
3985 }
3986
3987 switch (statype) {
3988 case CFG80211_STA_AP_MLME_CLIENT:
3989 /* Use this only for authorizing/unauthorizing a station */
3990 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3991 return -EOPNOTSUPP;
3992 break;
3993 case CFG80211_STA_AP_CLIENT:
3994 /* accept only the listed bits */
3995 if (params->sta_flags_mask &
3996 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3997 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3998 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3999 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4000 BIT(NL80211_STA_FLAG_WME) |
4001 BIT(NL80211_STA_FLAG_MFP)))
4002 return -EINVAL;
4003
4004 /* but authenticated/associated only if driver handles it */
4005 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4006 params->sta_flags_mask &
4007 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4008 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4009 return -EINVAL;
4010 break;
4011 case CFG80211_STA_IBSS:
4012 case CFG80211_STA_AP_STA:
4013 /* reject any changes other than AUTHORIZED */
4014 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4015 return -EINVAL;
4016 break;
4017 case CFG80211_STA_TDLS_PEER_SETUP:
4018 /* reject any changes other than AUTHORIZED or WME */
4019 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4020 BIT(NL80211_STA_FLAG_WME)))
4021 return -EINVAL;
4022 /* force (at least) rates when authorizing */
4023 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4024 !params->supported_rates)
4025 return -EINVAL;
4026 break;
4027 case CFG80211_STA_TDLS_PEER_ACTIVE:
4028 /* reject any changes */
4029 return -EINVAL;
4030 case CFG80211_STA_MESH_PEER_KERNEL:
4031 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4032 return -EINVAL;
4033 break;
4034 case CFG80211_STA_MESH_PEER_USER:
4035 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4036 return -EINVAL;
4037 break;
4038 }
4039
4040 return 0;
4041 }
4042 EXPORT_SYMBOL(cfg80211_check_station_change);
4043
4044 /*
4045 * Get vlan interface making sure it is running and on the right wiphy.
4046 */
4047 static struct net_device *get_vlan(struct genl_info *info,
4048 struct cfg80211_registered_device *rdev)
4049 {
4050 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4051 struct net_device *v;
4052 int ret;
4053
4054 if (!vlanattr)
4055 return NULL;
4056
4057 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4058 if (!v)
4059 return ERR_PTR(-ENODEV);
4060
4061 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4062 ret = -EINVAL;
4063 goto error;
4064 }
4065
4066 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4067 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4068 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4069 ret = -EINVAL;
4070 goto error;
4071 }
4072
4073 if (!netif_running(v)) {
4074 ret = -ENETDOWN;
4075 goto error;
4076 }
4077
4078 return v;
4079 error:
4080 dev_put(v);
4081 return ERR_PTR(ret);
4082 }
4083
4084 static const struct nla_policy
4085 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4086 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4087 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4088 };
4089
4090 static int nl80211_parse_sta_wme(struct genl_info *info,
4091 struct station_parameters *params)
4092 {
4093 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4094 struct nlattr *nla;
4095 int err;
4096
4097 /* parse WME attributes if present */
4098 if (!info->attrs[NL80211_ATTR_STA_WME])
4099 return 0;
4100
4101 nla = info->attrs[NL80211_ATTR_STA_WME];
4102 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4103 nl80211_sta_wme_policy);
4104 if (err)
4105 return err;
4106
4107 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4108 params->uapsd_queues = nla_get_u8(
4109 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4110 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4111 return -EINVAL;
4112
4113 if (tb[NL80211_STA_WME_MAX_SP])
4114 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4115
4116 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4117 return -EINVAL;
4118
4119 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4120
4121 return 0;
4122 }
4123
4124 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4125 struct station_parameters *params)
4126 {
4127 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4128 params->supported_channels =
4129 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4130 params->supported_channels_len =
4131 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4132 /*
4133 * Need to include at least one (first channel, number of
4134 * channels) tuple for each subband, and must have proper
4135 * tuples for the rest of the data as well.
4136 */
4137 if (params->supported_channels_len < 2)
4138 return -EINVAL;
4139 if (params->supported_channels_len % 2)
4140 return -EINVAL;
4141 }
4142
4143 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4144 params->supported_oper_classes =
4145 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4146 params->supported_oper_classes_len =
4147 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4148 /*
4149 * The value of the Length field of the Supported Operating
4150 * Classes element is between 2 and 253.
4151 */
4152 if (params->supported_oper_classes_len < 2 ||
4153 params->supported_oper_classes_len > 253)
4154 return -EINVAL;
4155 }
4156 return 0;
4157 }
4158
4159 static int nl80211_set_station_tdls(struct genl_info *info,
4160 struct station_parameters *params)
4161 {
4162 int err;
4163 /* Dummy STA entry gets updated once the peer capabilities are known */
4164 if (info->attrs[NL80211_ATTR_PEER_AID])
4165 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4166 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4167 params->ht_capa =
4168 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4169 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4170 params->vht_capa =
4171 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4172
4173 err = nl80211_parse_sta_channel_info(info, params);
4174 if (err)
4175 return err;
4176
4177 return nl80211_parse_sta_wme(info, params);
4178 }
4179
4180 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4181 {
4182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4183 struct net_device *dev = info->user_ptr[1];
4184 struct station_parameters params;
4185 u8 *mac_addr;
4186 int err;
4187
4188 memset(&params, 0, sizeof(params));
4189
4190 params.listen_interval = -1;
4191
4192 if (!rdev->ops->change_station)
4193 return -EOPNOTSUPP;
4194
4195 if (info->attrs[NL80211_ATTR_STA_AID])
4196 return -EINVAL;
4197
4198 if (!info->attrs[NL80211_ATTR_MAC])
4199 return -EINVAL;
4200
4201 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4202
4203 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4204 params.supported_rates =
4205 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4206 params.supported_rates_len =
4207 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4208 }
4209
4210 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4211 params.capability =
4212 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4213 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4214 }
4215
4216 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4217 params.ext_capab =
4218 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4219 params.ext_capab_len =
4220 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4221 }
4222
4223 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4224 return -EINVAL;
4225
4226 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4227 return -EINVAL;
4228
4229 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4230 params.plink_action =
4231 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4232 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4233 return -EINVAL;
4234 }
4235
4236 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4237 params.plink_state =
4238 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4239 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4240 return -EINVAL;
4241 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4242 }
4243
4244 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4245 enum nl80211_mesh_power_mode pm = nla_get_u32(
4246 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4247
4248 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4249 pm > NL80211_MESH_POWER_MAX)
4250 return -EINVAL;
4251
4252 params.local_pm = pm;
4253 }
4254
4255 /* Include parameters for TDLS peer (will check later) */
4256 err = nl80211_set_station_tdls(info, &params);
4257 if (err)
4258 return err;
4259
4260 params.vlan = get_vlan(info, rdev);
4261 if (IS_ERR(params.vlan))
4262 return PTR_ERR(params.vlan);
4263
4264 switch (dev->ieee80211_ptr->iftype) {
4265 case NL80211_IFTYPE_AP:
4266 case NL80211_IFTYPE_AP_VLAN:
4267 case NL80211_IFTYPE_P2P_GO:
4268 case NL80211_IFTYPE_P2P_CLIENT:
4269 case NL80211_IFTYPE_STATION:
4270 case NL80211_IFTYPE_ADHOC:
4271 case NL80211_IFTYPE_MESH_POINT:
4272 break;
4273 default:
4274 err = -EOPNOTSUPP;
4275 goto out_put_vlan;
4276 }
4277
4278 /* driver will call cfg80211_check_station_change() */
4279 err = rdev_change_station(rdev, dev, mac_addr, &params);
4280
4281 out_put_vlan:
4282 if (params.vlan)
4283 dev_put(params.vlan);
4284
4285 return err;
4286 }
4287
4288 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4289 {
4290 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4291 int err;
4292 struct net_device *dev = info->user_ptr[1];
4293 struct station_parameters params;
4294 u8 *mac_addr = NULL;
4295
4296 memset(&params, 0, sizeof(params));
4297
4298 if (!rdev->ops->add_station)
4299 return -EOPNOTSUPP;
4300
4301 if (!info->attrs[NL80211_ATTR_MAC])
4302 return -EINVAL;
4303
4304 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4305 return -EINVAL;
4306
4307 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4308 return -EINVAL;
4309
4310 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4311 !info->attrs[NL80211_ATTR_PEER_AID])
4312 return -EINVAL;
4313
4314 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4315 params.supported_rates =
4316 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4317 params.supported_rates_len =
4318 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4319 params.listen_interval =
4320 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4321
4322 if (info->attrs[NL80211_ATTR_PEER_AID])
4323 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4324 else
4325 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4326 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4327 return -EINVAL;
4328
4329 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4330 params.capability =
4331 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4332 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4333 }
4334
4335 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4336 params.ext_capab =
4337 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4338 params.ext_capab_len =
4339 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4340 }
4341
4342 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4343 params.ht_capa =
4344 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4345
4346 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4347 params.vht_capa =
4348 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4349
4350 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4351 params.opmode_notif_used = true;
4352 params.opmode_notif =
4353 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4354 }
4355
4356 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4357 params.plink_action =
4358 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4359 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4360 return -EINVAL;
4361 }
4362
4363 err = nl80211_parse_sta_channel_info(info, &params);
4364 if (err)
4365 return err;
4366
4367 err = nl80211_parse_sta_wme(info, &params);
4368 if (err)
4369 return err;
4370
4371 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4372 return -EINVAL;
4373
4374 /* When you run into this, adjust the code below for the new flag */
4375 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4376
4377 switch (dev->ieee80211_ptr->iftype) {
4378 case NL80211_IFTYPE_AP:
4379 case NL80211_IFTYPE_AP_VLAN:
4380 case NL80211_IFTYPE_P2P_GO:
4381 /* ignore WME attributes if iface/sta is not capable */
4382 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4383 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4384 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4385
4386 /* TDLS peers cannot be added */
4387 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4388 info->attrs[NL80211_ATTR_PEER_AID])
4389 return -EINVAL;
4390 /* but don't bother the driver with it */
4391 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4392
4393 /* allow authenticated/associated only if driver handles it */
4394 if (!(rdev->wiphy.features &
4395 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4396 params.sta_flags_mask &
4397 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4398 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4399 return -EINVAL;
4400
4401 /* must be last in here for error handling */
4402 params.vlan = get_vlan(info, rdev);
4403 if (IS_ERR(params.vlan))
4404 return PTR_ERR(params.vlan);
4405 break;
4406 case NL80211_IFTYPE_MESH_POINT:
4407 /* ignore uAPSD data */
4408 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4409
4410 /* associated is disallowed */
4411 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4412 return -EINVAL;
4413 /* TDLS peers cannot be added */
4414 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4415 info->attrs[NL80211_ATTR_PEER_AID])
4416 return -EINVAL;
4417 break;
4418 case NL80211_IFTYPE_STATION:
4419 case NL80211_IFTYPE_P2P_CLIENT:
4420 /* ignore uAPSD data */
4421 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4422
4423 /* these are disallowed */
4424 if (params.sta_flags_mask &
4425 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4426 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4427 return -EINVAL;
4428 /* Only TDLS peers can be added */
4429 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4430 return -EINVAL;
4431 /* Can only add if TDLS ... */
4432 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4433 return -EOPNOTSUPP;
4434 /* ... with external setup is supported */
4435 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4436 return -EOPNOTSUPP;
4437 /*
4438 * Older wpa_supplicant versions always mark the TDLS peer
4439 * as authorized, but it shouldn't yet be.
4440 */
4441 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4442 break;
4443 default:
4444 return -EOPNOTSUPP;
4445 }
4446
4447 /* be aware of params.vlan when changing code here */
4448
4449 err = rdev_add_station(rdev, dev, mac_addr, &params);
4450
4451 if (params.vlan)
4452 dev_put(params.vlan);
4453 return err;
4454 }
4455
4456 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4457 {
4458 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4459 struct net_device *dev = info->user_ptr[1];
4460 struct station_del_parameters params;
4461
4462 memset(&params, 0, sizeof(params));
4463
4464 if (info->attrs[NL80211_ATTR_MAC])
4465 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4466
4467 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4468 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4469 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4470 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4471 return -EINVAL;
4472
4473 if (!rdev->ops->del_station)
4474 return -EOPNOTSUPP;
4475
4476 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4477 params.subtype =
4478 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4479 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4480 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4481 return -EINVAL;
4482 } else {
4483 /* Default to Deauthentication frame */
4484 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4485 }
4486
4487 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4488 params.reason_code =
4489 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4490 if (params.reason_code == 0)
4491 return -EINVAL; /* 0 is reserved */
4492 } else {
4493 /* Default to reason code 2 */
4494 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4495 }
4496
4497 return rdev_del_station(rdev, dev, &params);
4498 }
4499
4500 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4501 int flags, struct net_device *dev,
4502 u8 *dst, u8 *next_hop,
4503 struct mpath_info *pinfo)
4504 {
4505 void *hdr;
4506 struct nlattr *pinfoattr;
4507
4508 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4509 if (!hdr)
4510 return -1;
4511
4512 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4513 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4514 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4515 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4516 goto nla_put_failure;
4517
4518 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4519 if (!pinfoattr)
4520 goto nla_put_failure;
4521 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4522 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4523 pinfo->frame_qlen))
4524 goto nla_put_failure;
4525 if (((pinfo->filled & MPATH_INFO_SN) &&
4526 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4527 ((pinfo->filled & MPATH_INFO_METRIC) &&
4528 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4529 pinfo->metric)) ||
4530 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4531 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4532 pinfo->exptime)) ||
4533 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4534 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4535 pinfo->flags)) ||
4536 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4537 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4538 pinfo->discovery_timeout)) ||
4539 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4540 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4541 pinfo->discovery_retries)))
4542 goto nla_put_failure;
4543
4544 nla_nest_end(msg, pinfoattr);
4545
4546 return genlmsg_end(msg, hdr);
4547
4548 nla_put_failure:
4549 genlmsg_cancel(msg, hdr);
4550 return -EMSGSIZE;
4551 }
4552
4553 static int nl80211_dump_mpath(struct sk_buff *skb,
4554 struct netlink_callback *cb)
4555 {
4556 struct mpath_info pinfo;
4557 struct cfg80211_registered_device *rdev;
4558 struct wireless_dev *wdev;
4559 u8 dst[ETH_ALEN];
4560 u8 next_hop[ETH_ALEN];
4561 int path_idx = cb->args[2];
4562 int err;
4563
4564 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4565 if (err)
4566 return err;
4567
4568 if (!rdev->ops->dump_mpath) {
4569 err = -EOPNOTSUPP;
4570 goto out_err;
4571 }
4572
4573 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4574 err = -EOPNOTSUPP;
4575 goto out_err;
4576 }
4577
4578 while (1) {
4579 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4580 next_hop, &pinfo);
4581 if (err == -ENOENT)
4582 break;
4583 if (err)
4584 goto out_err;
4585
4586 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4587 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4588 wdev->netdev, dst, next_hop,
4589 &pinfo) < 0)
4590 goto out;
4591
4592 path_idx++;
4593 }
4594
4595
4596 out:
4597 cb->args[2] = path_idx;
4598 err = skb->len;
4599 out_err:
4600 nl80211_finish_wdev_dump(rdev);
4601 return err;
4602 }
4603
4604 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4605 {
4606 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4607 int err;
4608 struct net_device *dev = info->user_ptr[1];
4609 struct mpath_info pinfo;
4610 struct sk_buff *msg;
4611 u8 *dst = NULL;
4612 u8 next_hop[ETH_ALEN];
4613
4614 memset(&pinfo, 0, sizeof(pinfo));
4615
4616 if (!info->attrs[NL80211_ATTR_MAC])
4617 return -EINVAL;
4618
4619 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4620
4621 if (!rdev->ops->get_mpath)
4622 return -EOPNOTSUPP;
4623
4624 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4625 return -EOPNOTSUPP;
4626
4627 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4628 if (err)
4629 return err;
4630
4631 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4632 if (!msg)
4633 return -ENOMEM;
4634
4635 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4636 dev, dst, next_hop, &pinfo) < 0) {
4637 nlmsg_free(msg);
4638 return -ENOBUFS;
4639 }
4640
4641 return genlmsg_reply(msg, info);
4642 }
4643
4644 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4645 {
4646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4647 struct net_device *dev = info->user_ptr[1];
4648 u8 *dst = NULL;
4649 u8 *next_hop = NULL;
4650
4651 if (!info->attrs[NL80211_ATTR_MAC])
4652 return -EINVAL;
4653
4654 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4655 return -EINVAL;
4656
4657 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4658 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4659
4660 if (!rdev->ops->change_mpath)
4661 return -EOPNOTSUPP;
4662
4663 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4664 return -EOPNOTSUPP;
4665
4666 return rdev_change_mpath(rdev, dev, dst, next_hop);
4667 }
4668
4669 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4670 {
4671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4672 struct net_device *dev = info->user_ptr[1];
4673 u8 *dst = NULL;
4674 u8 *next_hop = NULL;
4675
4676 if (!info->attrs[NL80211_ATTR_MAC])
4677 return -EINVAL;
4678
4679 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4680 return -EINVAL;
4681
4682 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4683 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4684
4685 if (!rdev->ops->add_mpath)
4686 return -EOPNOTSUPP;
4687
4688 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4689 return -EOPNOTSUPP;
4690
4691 return rdev_add_mpath(rdev, dev, dst, next_hop);
4692 }
4693
4694 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4695 {
4696 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4697 struct net_device *dev = info->user_ptr[1];
4698 u8 *dst = NULL;
4699
4700 if (info->attrs[NL80211_ATTR_MAC])
4701 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4702
4703 if (!rdev->ops->del_mpath)
4704 return -EOPNOTSUPP;
4705
4706 return rdev_del_mpath(rdev, dev, dst);
4707 }
4708
4709 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4710 {
4711 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4712 int err;
4713 struct net_device *dev = info->user_ptr[1];
4714 struct mpath_info pinfo;
4715 struct sk_buff *msg;
4716 u8 *dst = NULL;
4717 u8 mpp[ETH_ALEN];
4718
4719 memset(&pinfo, 0, sizeof(pinfo));
4720
4721 if (!info->attrs[NL80211_ATTR_MAC])
4722 return -EINVAL;
4723
4724 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4725
4726 if (!rdev->ops->get_mpp)
4727 return -EOPNOTSUPP;
4728
4729 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4730 return -EOPNOTSUPP;
4731
4732 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4733 if (err)
4734 return err;
4735
4736 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4737 if (!msg)
4738 return -ENOMEM;
4739
4740 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4741 dev, dst, mpp, &pinfo) < 0) {
4742 nlmsg_free(msg);
4743 return -ENOBUFS;
4744 }
4745
4746 return genlmsg_reply(msg, info);
4747 }
4748
4749 static int nl80211_dump_mpp(struct sk_buff *skb,
4750 struct netlink_callback *cb)
4751 {
4752 struct mpath_info pinfo;
4753 struct cfg80211_registered_device *rdev;
4754 struct wireless_dev *wdev;
4755 u8 dst[ETH_ALEN];
4756 u8 mpp[ETH_ALEN];
4757 int path_idx = cb->args[2];
4758 int err;
4759
4760 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4761 if (err)
4762 return err;
4763
4764 if (!rdev->ops->dump_mpp) {
4765 err = -EOPNOTSUPP;
4766 goto out_err;
4767 }
4768
4769 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4770 err = -EOPNOTSUPP;
4771 goto out_err;
4772 }
4773
4774 while (1) {
4775 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4776 mpp, &pinfo);
4777 if (err == -ENOENT)
4778 break;
4779 if (err)
4780 goto out_err;
4781
4782 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4783 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4784 wdev->netdev, dst, mpp,
4785 &pinfo) < 0)
4786 goto out;
4787
4788 path_idx++;
4789 }
4790
4791 out:
4792 cb->args[2] = path_idx;
4793 err = skb->len;
4794 out_err:
4795 nl80211_finish_wdev_dump(rdev);
4796 return err;
4797 }
4798
4799 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4800 {
4801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4802 struct net_device *dev = info->user_ptr[1];
4803 struct wireless_dev *wdev = dev->ieee80211_ptr;
4804 struct bss_parameters params;
4805 int err;
4806
4807 memset(&params, 0, sizeof(params));
4808 /* default to not changing parameters */
4809 params.use_cts_prot = -1;
4810 params.use_short_preamble = -1;
4811 params.use_short_slot_time = -1;
4812 params.ap_isolate = -1;
4813 params.ht_opmode = -1;
4814 params.p2p_ctwindow = -1;
4815 params.p2p_opp_ps = -1;
4816
4817 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4818 params.use_cts_prot =
4819 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4820 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4821 params.use_short_preamble =
4822 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4823 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4824 params.use_short_slot_time =
4825 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4826 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4827 params.basic_rates =
4828 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4829 params.basic_rates_len =
4830 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4831 }
4832 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4833 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4834 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4835 params.ht_opmode =
4836 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4837
4838 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4839 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4840 return -EINVAL;
4841 params.p2p_ctwindow =
4842 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4843 if (params.p2p_ctwindow < 0)
4844 return -EINVAL;
4845 if (params.p2p_ctwindow != 0 &&
4846 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4847 return -EINVAL;
4848 }
4849
4850 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4851 u8 tmp;
4852
4853 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4854 return -EINVAL;
4855 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4856 if (tmp > 1)
4857 return -EINVAL;
4858 params.p2p_opp_ps = tmp;
4859 if (params.p2p_opp_ps &&
4860 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4861 return -EINVAL;
4862 }
4863
4864 if (!rdev->ops->change_bss)
4865 return -EOPNOTSUPP;
4866
4867 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4868 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4869 return -EOPNOTSUPP;
4870
4871 wdev_lock(wdev);
4872 err = rdev_change_bss(rdev, dev, &params);
4873 wdev_unlock(wdev);
4874
4875 return err;
4876 }
4877
4878 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4879 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4880 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4881 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4882 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4883 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4884 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4885 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4886 };
4887
4888 static int parse_reg_rule(struct nlattr *tb[],
4889 struct ieee80211_reg_rule *reg_rule)
4890 {
4891 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4892 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4893
4894 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4895 return -EINVAL;
4896 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4897 return -EINVAL;
4898 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4899 return -EINVAL;
4900 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4901 return -EINVAL;
4902 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4903 return -EINVAL;
4904
4905 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4906
4907 freq_range->start_freq_khz =
4908 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4909 freq_range->end_freq_khz =
4910 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4911 freq_range->max_bandwidth_khz =
4912 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4913
4914 power_rule->max_eirp =
4915 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4916
4917 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4918 power_rule->max_antenna_gain =
4919 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4920
4921 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4922 reg_rule->dfs_cac_ms =
4923 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4924
4925 return 0;
4926 }
4927
4928 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4929 {
4930 char *data = NULL;
4931 enum nl80211_user_reg_hint_type user_reg_hint_type;
4932
4933 /*
4934 * You should only get this when cfg80211 hasn't yet initialized
4935 * completely when built-in to the kernel right between the time
4936 * window between nl80211_init() and regulatory_init(), if that is
4937 * even possible.
4938 */
4939 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4940 return -EINPROGRESS;
4941
4942 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4943 user_reg_hint_type =
4944 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4945 else
4946 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4947
4948 switch (user_reg_hint_type) {
4949 case NL80211_USER_REG_HINT_USER:
4950 case NL80211_USER_REG_HINT_CELL_BASE:
4951 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4952 return -EINVAL;
4953
4954 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4955 return regulatory_hint_user(data, user_reg_hint_type);
4956 case NL80211_USER_REG_HINT_INDOOR:
4957 return regulatory_hint_indoor_user();
4958 default:
4959 return -EINVAL;
4960 }
4961 }
4962
4963 static int nl80211_get_mesh_config(struct sk_buff *skb,
4964 struct genl_info *info)
4965 {
4966 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4967 struct net_device *dev = info->user_ptr[1];
4968 struct wireless_dev *wdev = dev->ieee80211_ptr;
4969 struct mesh_config cur_params;
4970 int err = 0;
4971 void *hdr;
4972 struct nlattr *pinfoattr;
4973 struct sk_buff *msg;
4974
4975 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4976 return -EOPNOTSUPP;
4977
4978 if (!rdev->ops->get_mesh_config)
4979 return -EOPNOTSUPP;
4980
4981 wdev_lock(wdev);
4982 /* If not connected, get default parameters */
4983 if (!wdev->mesh_id_len)
4984 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4985 else
4986 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4987 wdev_unlock(wdev);
4988
4989 if (err)
4990 return err;
4991
4992 /* Draw up a netlink message to send back */
4993 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4994 if (!msg)
4995 return -ENOMEM;
4996 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4997 NL80211_CMD_GET_MESH_CONFIG);
4998 if (!hdr)
4999 goto out;
5000 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5001 if (!pinfoattr)
5002 goto nla_put_failure;
5003 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5004 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5005 cur_params.dot11MeshRetryTimeout) ||
5006 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5007 cur_params.dot11MeshConfirmTimeout) ||
5008 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5009 cur_params.dot11MeshHoldingTimeout) ||
5010 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5011 cur_params.dot11MeshMaxPeerLinks) ||
5012 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5013 cur_params.dot11MeshMaxRetries) ||
5014 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5015 cur_params.dot11MeshTTL) ||
5016 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5017 cur_params.element_ttl) ||
5018 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5019 cur_params.auto_open_plinks) ||
5020 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5021 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5022 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5023 cur_params.dot11MeshHWMPmaxPREQretries) ||
5024 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5025 cur_params.path_refresh_time) ||
5026 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5027 cur_params.min_discovery_timeout) ||
5028 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5029 cur_params.dot11MeshHWMPactivePathTimeout) ||
5030 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5031 cur_params.dot11MeshHWMPpreqMinInterval) ||
5032 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5033 cur_params.dot11MeshHWMPperrMinInterval) ||
5034 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5035 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5036 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5037 cur_params.dot11MeshHWMPRootMode) ||
5038 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5039 cur_params.dot11MeshHWMPRannInterval) ||
5040 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5041 cur_params.dot11MeshGateAnnouncementProtocol) ||
5042 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5043 cur_params.dot11MeshForwarding) ||
5044 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5045 cur_params.rssi_threshold) ||
5046 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5047 cur_params.ht_opmode) ||
5048 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5049 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5050 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5051 cur_params.dot11MeshHWMProotInterval) ||
5052 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5053 cur_params.dot11MeshHWMPconfirmationInterval) ||
5054 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5055 cur_params.power_mode) ||
5056 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5057 cur_params.dot11MeshAwakeWindowDuration) ||
5058 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5059 cur_params.plink_timeout))
5060 goto nla_put_failure;
5061 nla_nest_end(msg, pinfoattr);
5062 genlmsg_end(msg, hdr);
5063 return genlmsg_reply(msg, info);
5064
5065 nla_put_failure:
5066 genlmsg_cancel(msg, hdr);
5067 out:
5068 nlmsg_free(msg);
5069 return -ENOBUFS;
5070 }
5071
5072 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5073 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5074 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5075 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5076 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5077 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5078 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5079 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5080 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5081 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5082 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5083 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5084 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5085 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5086 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5087 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5088 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5089 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5090 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5091 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5092 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5093 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5094 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5095 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5096 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5097 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5098 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5099 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5100 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5101 };
5102
5103 static const struct nla_policy
5104 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5105 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5106 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5107 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5108 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5109 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5110 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5111 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5112 .len = IEEE80211_MAX_DATA_LEN },
5113 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5114 };
5115
5116 static int nl80211_parse_mesh_config(struct genl_info *info,
5117 struct mesh_config *cfg,
5118 u32 *mask_out)
5119 {
5120 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5121 u32 mask = 0;
5122
5123 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5124 do { \
5125 if (tb[attr]) { \
5126 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5127 return -EINVAL; \
5128 cfg->param = fn(tb[attr]); \
5129 mask |= (1 << (attr - 1)); \
5130 } \
5131 } while (0)
5132
5133
5134 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5135 return -EINVAL;
5136 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5137 info->attrs[NL80211_ATTR_MESH_CONFIG],
5138 nl80211_meshconf_params_policy))
5139 return -EINVAL;
5140
5141 /* This makes sure that there aren't more than 32 mesh config
5142 * parameters (otherwise our bitfield scheme would not work.) */
5143 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5144
5145 /* Fill in the params struct */
5146 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5147 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5148 nla_get_u16);
5149 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5150 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5151 nla_get_u16);
5152 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5153 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5154 nla_get_u16);
5155 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5156 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5157 nla_get_u16);
5158 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5159 mask, NL80211_MESHCONF_MAX_RETRIES,
5160 nla_get_u8);
5161 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5162 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5163 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5164 mask, NL80211_MESHCONF_ELEMENT_TTL,
5165 nla_get_u8);
5166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5167 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5168 nla_get_u8);
5169 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5170 1, 255, mask,
5171 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5172 nla_get_u32);
5173 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5174 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5175 nla_get_u8);
5176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5177 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5178 nla_get_u32);
5179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5180 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5181 nla_get_u16);
5182 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5183 1, 65535, mask,
5184 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5185 nla_get_u32);
5186 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5187 1, 65535, mask,
5188 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5189 nla_get_u16);
5190 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5191 1, 65535, mask,
5192 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5193 nla_get_u16);
5194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5195 dot11MeshHWMPnetDiameterTraversalTime,
5196 1, 65535, mask,
5197 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5198 nla_get_u16);
5199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5200 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5201 nla_get_u8);
5202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5203 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5204 nla_get_u16);
5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5206 dot11MeshGateAnnouncementProtocol, 0, 1,
5207 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5208 nla_get_u8);
5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5210 mask, NL80211_MESHCONF_FORWARDING,
5211 nla_get_u8);
5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5213 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5214 nla_get_s32);
5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5216 mask, NL80211_MESHCONF_HT_OPMODE,
5217 nla_get_u16);
5218 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5219 1, 65535, mask,
5220 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5221 nla_get_u32);
5222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5223 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5224 nla_get_u16);
5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5226 dot11MeshHWMPconfirmationInterval,
5227 1, 65535, mask,
5228 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5229 nla_get_u16);
5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5231 NL80211_MESH_POWER_ACTIVE,
5232 NL80211_MESH_POWER_MAX,
5233 mask, NL80211_MESHCONF_POWER_MODE,
5234 nla_get_u32);
5235 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5236 0, 65535, mask,
5237 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5238 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5239 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5240 nla_get_u32);
5241 if (mask_out)
5242 *mask_out = mask;
5243
5244 return 0;
5245
5246 #undef FILL_IN_MESH_PARAM_IF_SET
5247 }
5248
5249 static int nl80211_parse_mesh_setup(struct genl_info *info,
5250 struct mesh_setup *setup)
5251 {
5252 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5253 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5254
5255 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5256 return -EINVAL;
5257 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5258 info->attrs[NL80211_ATTR_MESH_SETUP],
5259 nl80211_mesh_setup_params_policy))
5260 return -EINVAL;
5261
5262 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5263 setup->sync_method =
5264 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5265 IEEE80211_SYNC_METHOD_VENDOR :
5266 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5267
5268 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5269 setup->path_sel_proto =
5270 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5271 IEEE80211_PATH_PROTOCOL_VENDOR :
5272 IEEE80211_PATH_PROTOCOL_HWMP;
5273
5274 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5275 setup->path_metric =
5276 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5277 IEEE80211_PATH_METRIC_VENDOR :
5278 IEEE80211_PATH_METRIC_AIRTIME;
5279
5280
5281 if (tb[NL80211_MESH_SETUP_IE]) {
5282 struct nlattr *ieattr =
5283 tb[NL80211_MESH_SETUP_IE];
5284 if (!is_valid_ie_attr(ieattr))
5285 return -EINVAL;
5286 setup->ie = nla_data(ieattr);
5287 setup->ie_len = nla_len(ieattr);
5288 }
5289 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5290 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5291 return -EINVAL;
5292 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5293 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5294 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5295 if (setup->is_secure)
5296 setup->user_mpm = true;
5297
5298 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5299 if (!setup->user_mpm)
5300 return -EINVAL;
5301 setup->auth_id =
5302 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5303 }
5304
5305 return 0;
5306 }
5307
5308 static int nl80211_update_mesh_config(struct sk_buff *skb,
5309 struct genl_info *info)
5310 {
5311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5312 struct net_device *dev = info->user_ptr[1];
5313 struct wireless_dev *wdev = dev->ieee80211_ptr;
5314 struct mesh_config cfg;
5315 u32 mask;
5316 int err;
5317
5318 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5319 return -EOPNOTSUPP;
5320
5321 if (!rdev->ops->update_mesh_config)
5322 return -EOPNOTSUPP;
5323
5324 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5325 if (err)
5326 return err;
5327
5328 wdev_lock(wdev);
5329 if (!wdev->mesh_id_len)
5330 err = -ENOLINK;
5331
5332 if (!err)
5333 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5334
5335 wdev_unlock(wdev);
5336
5337 return err;
5338 }
5339
5340 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5341 struct sk_buff *msg)
5342 {
5343 struct nlattr *nl_reg_rules;
5344 unsigned int i;
5345
5346 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5347 (regdom->dfs_region &&
5348 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5349 goto nla_put_failure;
5350
5351 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5352 if (!nl_reg_rules)
5353 goto nla_put_failure;
5354
5355 for (i = 0; i < regdom->n_reg_rules; i++) {
5356 struct nlattr *nl_reg_rule;
5357 const struct ieee80211_reg_rule *reg_rule;
5358 const struct ieee80211_freq_range *freq_range;
5359 const struct ieee80211_power_rule *power_rule;
5360 unsigned int max_bandwidth_khz;
5361
5362 reg_rule = &regdom->reg_rules[i];
5363 freq_range = &reg_rule->freq_range;
5364 power_rule = &reg_rule->power_rule;
5365
5366 nl_reg_rule = nla_nest_start(msg, i);
5367 if (!nl_reg_rule)
5368 goto nla_put_failure;
5369
5370 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5371 if (!max_bandwidth_khz)
5372 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5373 reg_rule);
5374
5375 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5376 reg_rule->flags) ||
5377 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5378 freq_range->start_freq_khz) ||
5379 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5380 freq_range->end_freq_khz) ||
5381 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5382 max_bandwidth_khz) ||
5383 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5384 power_rule->max_antenna_gain) ||
5385 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5386 power_rule->max_eirp) ||
5387 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5388 reg_rule->dfs_cac_ms))
5389 goto nla_put_failure;
5390
5391 nla_nest_end(msg, nl_reg_rule);
5392 }
5393
5394 nla_nest_end(msg, nl_reg_rules);
5395 return 0;
5396
5397 nla_put_failure:
5398 return -EMSGSIZE;
5399 }
5400
5401 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5402 {
5403 const struct ieee80211_regdomain *regdom = NULL;
5404 struct cfg80211_registered_device *rdev;
5405 struct wiphy *wiphy = NULL;
5406 struct sk_buff *msg;
5407 void *hdr;
5408
5409 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5410 if (!msg)
5411 return -ENOBUFS;
5412
5413 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5414 NL80211_CMD_GET_REG);
5415 if (!hdr)
5416 goto put_failure;
5417
5418 if (info->attrs[NL80211_ATTR_WIPHY]) {
5419 bool self_managed;
5420
5421 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5422 if (IS_ERR(rdev)) {
5423 nlmsg_free(msg);
5424 return PTR_ERR(rdev);
5425 }
5426
5427 wiphy = &rdev->wiphy;
5428 self_managed = wiphy->regulatory_flags &
5429 REGULATORY_WIPHY_SELF_MANAGED;
5430 regdom = get_wiphy_regdom(wiphy);
5431
5432 /* a self-managed-reg device must have a private regdom */
5433 if (WARN_ON(!regdom && self_managed)) {
5434 nlmsg_free(msg);
5435 return -EINVAL;
5436 }
5437
5438 if (regdom &&
5439 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5440 goto nla_put_failure;
5441 }
5442
5443 if (!wiphy && reg_last_request_cell_base() &&
5444 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5445 NL80211_USER_REG_HINT_CELL_BASE))
5446 goto nla_put_failure;
5447
5448 rcu_read_lock();
5449
5450 if (!regdom)
5451 regdom = rcu_dereference(cfg80211_regdomain);
5452
5453 if (nl80211_put_regdom(regdom, msg))
5454 goto nla_put_failure_rcu;
5455
5456 rcu_read_unlock();
5457
5458 genlmsg_end(msg, hdr);
5459 return genlmsg_reply(msg, info);
5460
5461 nla_put_failure_rcu:
5462 rcu_read_unlock();
5463 nla_put_failure:
5464 genlmsg_cancel(msg, hdr);
5465 put_failure:
5466 nlmsg_free(msg);
5467 return -EMSGSIZE;
5468 }
5469
5470 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5471 u32 seq, int flags, struct wiphy *wiphy,
5472 const struct ieee80211_regdomain *regdom)
5473 {
5474 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5475 NL80211_CMD_GET_REG);
5476
5477 if (!hdr)
5478 return -1;
5479
5480 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5481
5482 if (nl80211_put_regdom(regdom, msg))
5483 goto nla_put_failure;
5484
5485 if (!wiphy && reg_last_request_cell_base() &&
5486 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5487 NL80211_USER_REG_HINT_CELL_BASE))
5488 goto nla_put_failure;
5489
5490 if (wiphy &&
5491 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5492 goto nla_put_failure;
5493
5494 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5495 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5496 goto nla_put_failure;
5497
5498 return genlmsg_end(msg, hdr);
5499
5500 nla_put_failure:
5501 genlmsg_cancel(msg, hdr);
5502 return -EMSGSIZE;
5503 }
5504
5505 static int nl80211_get_reg_dump(struct sk_buff *skb,
5506 struct netlink_callback *cb)
5507 {
5508 const struct ieee80211_regdomain *regdom = NULL;
5509 struct cfg80211_registered_device *rdev;
5510 int err, reg_idx, start = cb->args[2];
5511
5512 rtnl_lock();
5513
5514 if (cfg80211_regdomain && start == 0) {
5515 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5516 NLM_F_MULTI, NULL,
5517 rtnl_dereference(cfg80211_regdomain));
5518 if (err < 0)
5519 goto out_err;
5520 }
5521
5522 /* the global regdom is idx 0 */
5523 reg_idx = 1;
5524 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5525 regdom = get_wiphy_regdom(&rdev->wiphy);
5526 if (!regdom)
5527 continue;
5528
5529 if (++reg_idx <= start)
5530 continue;
5531
5532 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5533 NLM_F_MULTI, &rdev->wiphy, regdom);
5534 if (err < 0) {
5535 reg_idx--;
5536 break;
5537 }
5538 }
5539
5540 cb->args[2] = reg_idx;
5541 err = skb->len;
5542 out_err:
5543 rtnl_unlock();
5544 return err;
5545 }
5546
5547 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5548 {
5549 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5550 struct nlattr *nl_reg_rule;
5551 char *alpha2;
5552 int rem_reg_rules, r;
5553 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5554 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5555 struct ieee80211_regdomain *rd;
5556
5557 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5558 return -EINVAL;
5559
5560 if (!info->attrs[NL80211_ATTR_REG_RULES])
5561 return -EINVAL;
5562
5563 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5564
5565 if (info->attrs[NL80211_ATTR_DFS_REGION])
5566 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5567
5568 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5569 rem_reg_rules) {
5570 num_rules++;
5571 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5572 return -EINVAL;
5573 }
5574
5575 if (!reg_is_valid_request(alpha2))
5576 return -EINVAL;
5577
5578 size_of_regd = sizeof(struct ieee80211_regdomain) +
5579 num_rules * sizeof(struct ieee80211_reg_rule);
5580
5581 rd = kzalloc(size_of_regd, GFP_KERNEL);
5582 if (!rd)
5583 return -ENOMEM;
5584
5585 rd->n_reg_rules = num_rules;
5586 rd->alpha2[0] = alpha2[0];
5587 rd->alpha2[1] = alpha2[1];
5588
5589 /*
5590 * Disable DFS master mode if the DFS region was
5591 * not supported or known on this kernel.
5592 */
5593 if (reg_supported_dfs_region(dfs_region))
5594 rd->dfs_region = dfs_region;
5595
5596 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5597 rem_reg_rules) {
5598 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5599 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5600 reg_rule_policy);
5601 if (r)
5602 goto bad_reg;
5603 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5604 if (r)
5605 goto bad_reg;
5606
5607 rule_idx++;
5608
5609 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5610 r = -EINVAL;
5611 goto bad_reg;
5612 }
5613 }
5614
5615 r = set_regdom(rd);
5616 /* set_regdom took ownership */
5617 rd = NULL;
5618
5619 bad_reg:
5620 kfree(rd);
5621 return r;
5622 }
5623
5624 static int validate_scan_freqs(struct nlattr *freqs)
5625 {
5626 struct nlattr *attr1, *attr2;
5627 int n_channels = 0, tmp1, tmp2;
5628
5629 nla_for_each_nested(attr1, freqs, tmp1) {
5630 n_channels++;
5631 /*
5632 * Some hardware has a limited channel list for
5633 * scanning, and it is pretty much nonsensical
5634 * to scan for a channel twice, so disallow that
5635 * and don't require drivers to check that the
5636 * channel list they get isn't longer than what
5637 * they can scan, as long as they can scan all
5638 * the channels they registered at once.
5639 */
5640 nla_for_each_nested(attr2, freqs, tmp2)
5641 if (attr1 != attr2 &&
5642 nla_get_u32(attr1) == nla_get_u32(attr2))
5643 return 0;
5644 }
5645
5646 return n_channels;
5647 }
5648
5649 static int nl80211_parse_random_mac(struct nlattr **attrs,
5650 u8 *mac_addr, u8 *mac_addr_mask)
5651 {
5652 int i;
5653
5654 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5655 memset(mac_addr, 0, ETH_ALEN);
5656 memset(mac_addr_mask, 0, ETH_ALEN);
5657 mac_addr[0] = 0x2;
5658 mac_addr_mask[0] = 0x3;
5659
5660 return 0;
5661 }
5662
5663 /* need both or none */
5664 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5665 return -EINVAL;
5666
5667 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5668 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5669
5670 /* don't allow or configure an mcast address */
5671 if (!is_multicast_ether_addr(mac_addr_mask) ||
5672 is_multicast_ether_addr(mac_addr))
5673 return -EINVAL;
5674
5675 /*
5676 * allow users to pass a MAC address that has bits set outside
5677 * of the mask, but don't bother drivers with having to deal
5678 * with such bits
5679 */
5680 for (i = 0; i < ETH_ALEN; i++)
5681 mac_addr[i] &= mac_addr_mask[i];
5682
5683 return 0;
5684 }
5685
5686 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5687 {
5688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5689 struct wireless_dev *wdev = info->user_ptr[1];
5690 struct cfg80211_scan_request *request;
5691 struct nlattr *attr;
5692 struct wiphy *wiphy;
5693 int err, tmp, n_ssids = 0, n_channels, i;
5694 size_t ie_len;
5695
5696 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5697 return -EINVAL;
5698
5699 wiphy = &rdev->wiphy;
5700
5701 if (!rdev->ops->scan)
5702 return -EOPNOTSUPP;
5703
5704 if (rdev->scan_req || rdev->scan_msg) {
5705 err = -EBUSY;
5706 goto unlock;
5707 }
5708
5709 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5710 n_channels = validate_scan_freqs(
5711 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5712 if (!n_channels) {
5713 err = -EINVAL;
5714 goto unlock;
5715 }
5716 } else {
5717 n_channels = ieee80211_get_num_supported_channels(wiphy);
5718 }
5719
5720 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5721 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5722 n_ssids++;
5723
5724 if (n_ssids > wiphy->max_scan_ssids) {
5725 err = -EINVAL;
5726 goto unlock;
5727 }
5728
5729 if (info->attrs[NL80211_ATTR_IE])
5730 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5731 else
5732 ie_len = 0;
5733
5734 if (ie_len > wiphy->max_scan_ie_len) {
5735 err = -EINVAL;
5736 goto unlock;
5737 }
5738
5739 request = kzalloc(sizeof(*request)
5740 + sizeof(*request->ssids) * n_ssids
5741 + sizeof(*request->channels) * n_channels
5742 + ie_len, GFP_KERNEL);
5743 if (!request) {
5744 err = -ENOMEM;
5745 goto unlock;
5746 }
5747
5748 if (n_ssids)
5749 request->ssids = (void *)&request->channels[n_channels];
5750 request->n_ssids = n_ssids;
5751 if (ie_len) {
5752 if (request->ssids)
5753 request->ie = (void *)(request->ssids + n_ssids);
5754 else
5755 request->ie = (void *)(request->channels + n_channels);
5756 }
5757
5758 i = 0;
5759 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5760 /* user specified, bail out if channel not found */
5761 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5762 struct ieee80211_channel *chan;
5763
5764 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5765
5766 if (!chan) {
5767 err = -EINVAL;
5768 goto out_free;
5769 }
5770
5771 /* ignore disabled channels */
5772 if (chan->flags & IEEE80211_CHAN_DISABLED)
5773 continue;
5774
5775 request->channels[i] = chan;
5776 i++;
5777 }
5778 } else {
5779 enum ieee80211_band band;
5780
5781 /* all channels */
5782 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5783 int j;
5784 if (!wiphy->bands[band])
5785 continue;
5786 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5787 struct ieee80211_channel *chan;
5788
5789 chan = &wiphy->bands[band]->channels[j];
5790
5791 if (chan->flags & IEEE80211_CHAN_DISABLED)
5792 continue;
5793
5794 request->channels[i] = chan;
5795 i++;
5796 }
5797 }
5798 }
5799
5800 if (!i) {
5801 err = -EINVAL;
5802 goto out_free;
5803 }
5804
5805 request->n_channels = i;
5806
5807 i = 0;
5808 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5809 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5810 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5811 err = -EINVAL;
5812 goto out_free;
5813 }
5814 request->ssids[i].ssid_len = nla_len(attr);
5815 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5816 i++;
5817 }
5818 }
5819
5820 if (info->attrs[NL80211_ATTR_IE]) {
5821 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5822 memcpy((void *)request->ie,
5823 nla_data(info->attrs[NL80211_ATTR_IE]),
5824 request->ie_len);
5825 }
5826
5827 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5828 if (wiphy->bands[i])
5829 request->rates[i] =
5830 (1 << wiphy->bands[i]->n_bitrates) - 1;
5831
5832 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5833 nla_for_each_nested(attr,
5834 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5835 tmp) {
5836 enum ieee80211_band band = nla_type(attr);
5837
5838 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5839 err = -EINVAL;
5840 goto out_free;
5841 }
5842
5843 if (!wiphy->bands[band])
5844 continue;
5845
5846 err = ieee80211_get_ratemask(wiphy->bands[band],
5847 nla_data(attr),
5848 nla_len(attr),
5849 &request->rates[band]);
5850 if (err)
5851 goto out_free;
5852 }
5853 }
5854
5855 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5856 request->flags = nla_get_u32(
5857 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5858 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5859 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5860 err = -EOPNOTSUPP;
5861 goto out_free;
5862 }
5863
5864 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5865 if (!(wiphy->features &
5866 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5867 err = -EOPNOTSUPP;
5868 goto out_free;
5869 }
5870
5871 if (wdev->current_bss) {
5872 err = -EOPNOTSUPP;
5873 goto out_free;
5874 }
5875
5876 err = nl80211_parse_random_mac(info->attrs,
5877 request->mac_addr,
5878 request->mac_addr_mask);
5879 if (err)
5880 goto out_free;
5881 }
5882 }
5883
5884 request->no_cck =
5885 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5886
5887 request->wdev = wdev;
5888 request->wiphy = &rdev->wiphy;
5889 request->scan_start = jiffies;
5890
5891 rdev->scan_req = request;
5892 err = rdev_scan(rdev, request);
5893
5894 if (!err) {
5895 nl80211_send_scan_start(rdev, wdev);
5896 if (wdev->netdev)
5897 dev_hold(wdev->netdev);
5898 } else {
5899 out_free:
5900 rdev->scan_req = NULL;
5901 kfree(request);
5902 }
5903
5904 unlock:
5905 return err;
5906 }
5907
5908 static struct cfg80211_sched_scan_request *
5909 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5910 struct nlattr **attrs)
5911 {
5912 struct cfg80211_sched_scan_request *request;
5913 struct nlattr *attr;
5914 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5915 u32 interval;
5916 enum ieee80211_band band;
5917 size_t ie_len;
5918 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5919 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5920
5921 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5922 return ERR_PTR(-EINVAL);
5923
5924 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5925 return ERR_PTR(-EINVAL);
5926
5927 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5928 if (interval == 0)
5929 return ERR_PTR(-EINVAL);
5930
5931 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5932 n_channels = validate_scan_freqs(
5933 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5934 if (!n_channels)
5935 return ERR_PTR(-EINVAL);
5936 } else {
5937 n_channels = ieee80211_get_num_supported_channels(wiphy);
5938 }
5939
5940 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5941 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5942 tmp)
5943 n_ssids++;
5944
5945 if (n_ssids > wiphy->max_sched_scan_ssids)
5946 return ERR_PTR(-EINVAL);
5947
5948 /*
5949 * First, count the number of 'real' matchsets. Due to an issue with
5950 * the old implementation, matchsets containing only the RSSI attribute
5951 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5952 * RSSI for all matchsets, rather than their own matchset for reporting
5953 * all APs with a strong RSSI. This is needed to be compatible with
5954 * older userspace that treated a matchset with only the RSSI as the
5955 * global RSSI for all other matchsets - if there are other matchsets.
5956 */
5957 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5958 nla_for_each_nested(attr,
5959 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5960 tmp) {
5961 struct nlattr *rssi;
5962
5963 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5964 nla_data(attr), nla_len(attr),
5965 nl80211_match_policy);
5966 if (err)
5967 return ERR_PTR(err);
5968 /* add other standalone attributes here */
5969 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5970 n_match_sets++;
5971 continue;
5972 }
5973 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5974 if (rssi)
5975 default_match_rssi = nla_get_s32(rssi);
5976 }
5977 }
5978
5979 /* However, if there's no other matchset, add the RSSI one */
5980 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5981 n_match_sets = 1;
5982
5983 if (n_match_sets > wiphy->max_match_sets)
5984 return ERR_PTR(-EINVAL);
5985
5986 if (attrs[NL80211_ATTR_IE])
5987 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5988 else
5989 ie_len = 0;
5990
5991 if (ie_len > wiphy->max_sched_scan_ie_len)
5992 return ERR_PTR(-EINVAL);
5993
5994 request = kzalloc(sizeof(*request)
5995 + sizeof(*request->ssids) * n_ssids
5996 + sizeof(*request->match_sets) * n_match_sets
5997 + sizeof(*request->channels) * n_channels
5998 + ie_len, GFP_KERNEL);
5999 if (!request)
6000 return ERR_PTR(-ENOMEM);
6001
6002 if (n_ssids)
6003 request->ssids = (void *)&request->channels[n_channels];
6004 request->n_ssids = n_ssids;
6005 if (ie_len) {
6006 if (request->ssids)
6007 request->ie = (void *)(request->ssids + n_ssids);
6008 else
6009 request->ie = (void *)(request->channels + n_channels);
6010 }
6011
6012 if (n_match_sets) {
6013 if (request->ie)
6014 request->match_sets = (void *)(request->ie + ie_len);
6015 else if (request->ssids)
6016 request->match_sets =
6017 (void *)(request->ssids + n_ssids);
6018 else
6019 request->match_sets =
6020 (void *)(request->channels + n_channels);
6021 }
6022 request->n_match_sets = n_match_sets;
6023
6024 i = 0;
6025 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6026 /* user specified, bail out if channel not found */
6027 nla_for_each_nested(attr,
6028 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6029 tmp) {
6030 struct ieee80211_channel *chan;
6031
6032 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6033
6034 if (!chan) {
6035 err = -EINVAL;
6036 goto out_free;
6037 }
6038
6039 /* ignore disabled channels */
6040 if (chan->flags & IEEE80211_CHAN_DISABLED)
6041 continue;
6042
6043 request->channels[i] = chan;
6044 i++;
6045 }
6046 } else {
6047 /* all channels */
6048 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6049 int j;
6050 if (!wiphy->bands[band])
6051 continue;
6052 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6053 struct ieee80211_channel *chan;
6054
6055 chan = &wiphy->bands[band]->channels[j];
6056
6057 if (chan->flags & IEEE80211_CHAN_DISABLED)
6058 continue;
6059
6060 request->channels[i] = chan;
6061 i++;
6062 }
6063 }
6064 }
6065
6066 if (!i) {
6067 err = -EINVAL;
6068 goto out_free;
6069 }
6070
6071 request->n_channels = i;
6072
6073 i = 0;
6074 if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6075 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6076 tmp) {
6077 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6078 err = -EINVAL;
6079 goto out_free;
6080 }
6081 request->ssids[i].ssid_len = nla_len(attr);
6082 memcpy(request->ssids[i].ssid, nla_data(attr),
6083 nla_len(attr));
6084 i++;
6085 }
6086 }
6087
6088 i = 0;
6089 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6090 nla_for_each_nested(attr,
6091 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6092 tmp) {
6093 struct nlattr *ssid, *rssi;
6094
6095 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6096 nla_data(attr), nla_len(attr),
6097 nl80211_match_policy);
6098 if (err)
6099 goto out_free;
6100 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6101 if (ssid) {
6102 if (WARN_ON(i >= n_match_sets)) {
6103 /* this indicates a programming error,
6104 * the loop above should have verified
6105 * things properly
6106 */
6107 err = -EINVAL;
6108 goto out_free;
6109 }
6110
6111 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6112 err = -EINVAL;
6113 goto out_free;
6114 }
6115 memcpy(request->match_sets[i].ssid.ssid,
6116 nla_data(ssid), nla_len(ssid));
6117 request->match_sets[i].ssid.ssid_len =
6118 nla_len(ssid);
6119 /* special attribute - old implemenation w/a */
6120 request->match_sets[i].rssi_thold =
6121 default_match_rssi;
6122 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6123 if (rssi)
6124 request->match_sets[i].rssi_thold =
6125 nla_get_s32(rssi);
6126 }
6127 i++;
6128 }
6129
6130 /* there was no other matchset, so the RSSI one is alone */
6131 if (i == 0 && n_match_sets)
6132 request->match_sets[0].rssi_thold = default_match_rssi;
6133
6134 request->min_rssi_thold = INT_MAX;
6135 for (i = 0; i < n_match_sets; i++)
6136 request->min_rssi_thold =
6137 min(request->match_sets[i].rssi_thold,
6138 request->min_rssi_thold);
6139 } else {
6140 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6141 }
6142
6143 if (ie_len) {
6144 request->ie_len = ie_len;
6145 memcpy((void *)request->ie,
6146 nla_data(attrs[NL80211_ATTR_IE]),
6147 request->ie_len);
6148 }
6149
6150 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6151 request->flags = nla_get_u32(
6152 attrs[NL80211_ATTR_SCAN_FLAGS]);
6153 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6154 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6155 err = -EOPNOTSUPP;
6156 goto out_free;
6157 }
6158
6159 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6160 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6161
6162 if (!wdev) /* must be net-detect */
6163 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6164
6165 if (!(wiphy->features & flg)) {
6166 err = -EOPNOTSUPP;
6167 goto out_free;
6168 }
6169
6170 if (wdev && wdev->current_bss) {
6171 err = -EOPNOTSUPP;
6172 goto out_free;
6173 }
6174
6175 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6176 request->mac_addr_mask);
6177 if (err)
6178 goto out_free;
6179 }
6180 }
6181
6182 request->interval = interval;
6183 request->scan_start = jiffies;
6184
6185 return request;
6186
6187 out_free:
6188 kfree(request);
6189 return ERR_PTR(err);
6190 }
6191
6192 static int nl80211_start_sched_scan(struct sk_buff *skb,
6193 struct genl_info *info)
6194 {
6195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6196 struct net_device *dev = info->user_ptr[1];
6197 struct wireless_dev *wdev = dev->ieee80211_ptr;
6198 struct cfg80211_sched_scan_request *sched_scan_req;
6199 int err;
6200
6201 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6202 !rdev->ops->sched_scan_start)
6203 return -EOPNOTSUPP;
6204
6205 if (rdev->sched_scan_req)
6206 return -EINPROGRESS;
6207
6208 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6209 info->attrs);
6210
6211 err = PTR_ERR_OR_ZERO(sched_scan_req);
6212 if (err)
6213 goto out_err;
6214
6215 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6216 if (err)
6217 goto out_free;
6218
6219 sched_scan_req->dev = dev;
6220 sched_scan_req->wiphy = &rdev->wiphy;
6221
6222 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6223 sched_scan_req->owner_nlportid = info->snd_portid;
6224
6225 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6226
6227 nl80211_send_sched_scan(rdev, dev,
6228 NL80211_CMD_START_SCHED_SCAN);
6229 return 0;
6230
6231 out_free:
6232 kfree(sched_scan_req);
6233 out_err:
6234 return err;
6235 }
6236
6237 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6238 struct genl_info *info)
6239 {
6240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6241
6242 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6243 !rdev->ops->sched_scan_stop)
6244 return -EOPNOTSUPP;
6245
6246 return __cfg80211_stop_sched_scan(rdev, false);
6247 }
6248
6249 static int nl80211_start_radar_detection(struct sk_buff *skb,
6250 struct genl_info *info)
6251 {
6252 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6253 struct net_device *dev = info->user_ptr[1];
6254 struct wireless_dev *wdev = dev->ieee80211_ptr;
6255 struct cfg80211_chan_def chandef;
6256 enum nl80211_dfs_regions dfs_region;
6257 unsigned int cac_time_ms;
6258 int err;
6259
6260 dfs_region = reg_get_dfs_region(wdev->wiphy);
6261 if (dfs_region == NL80211_DFS_UNSET)
6262 return -EINVAL;
6263
6264 err = nl80211_parse_chandef(rdev, info, &chandef);
6265 if (err)
6266 return err;
6267
6268 if (netif_carrier_ok(dev))
6269 return -EBUSY;
6270
6271 if (wdev->cac_started)
6272 return -EBUSY;
6273
6274 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6275 wdev->iftype);
6276 if (err < 0)
6277 return err;
6278
6279 if (err == 0)
6280 return -EINVAL;
6281
6282 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6283 return -EINVAL;
6284
6285 if (!rdev->ops->start_radar_detection)
6286 return -EOPNOTSUPP;
6287
6288 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6289 if (WARN_ON(!cac_time_ms))
6290 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6291
6292 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6293 cac_time_ms);
6294 if (!err) {
6295 wdev->chandef = chandef;
6296 wdev->cac_started = true;
6297 wdev->cac_start_time = jiffies;
6298 wdev->cac_time_ms = cac_time_ms;
6299 }
6300 return err;
6301 }
6302
6303 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6304 {
6305 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6306 struct net_device *dev = info->user_ptr[1];
6307 struct wireless_dev *wdev = dev->ieee80211_ptr;
6308 struct cfg80211_csa_settings params;
6309 /* csa_attrs is defined static to avoid waste of stack size - this
6310 * function is called under RTNL lock, so this should not be a problem.
6311 */
6312 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6313 int err;
6314 bool need_new_beacon = false;
6315 int len, i;
6316 u32 cs_count;
6317
6318 if (!rdev->ops->channel_switch ||
6319 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6320 return -EOPNOTSUPP;
6321
6322 switch (dev->ieee80211_ptr->iftype) {
6323 case NL80211_IFTYPE_AP:
6324 case NL80211_IFTYPE_P2P_GO:
6325 need_new_beacon = true;
6326
6327 /* useless if AP is not running */
6328 if (!wdev->beacon_interval)
6329 return -ENOTCONN;
6330 break;
6331 case NL80211_IFTYPE_ADHOC:
6332 if (!wdev->ssid_len)
6333 return -ENOTCONN;
6334 break;
6335 case NL80211_IFTYPE_MESH_POINT:
6336 if (!wdev->mesh_id_len)
6337 return -ENOTCONN;
6338 break;
6339 default:
6340 return -EOPNOTSUPP;
6341 }
6342
6343 memset(&params, 0, sizeof(params));
6344
6345 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6346 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6347 return -EINVAL;
6348
6349 /* only important for AP, IBSS and mesh create IEs internally */
6350 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6351 return -EINVAL;
6352
6353 /* Even though the attribute is u32, the specification says
6354 * u8, so let's make sure we don't overflow.
6355 */
6356 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6357 if (cs_count > 255)
6358 return -EINVAL;
6359
6360 params.count = cs_count;
6361
6362 if (!need_new_beacon)
6363 goto skip_beacons;
6364
6365 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6366 if (err)
6367 return err;
6368
6369 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6370 info->attrs[NL80211_ATTR_CSA_IES],
6371 nl80211_policy);
6372 if (err)
6373 return err;
6374
6375 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6376 if (err)
6377 return err;
6378
6379 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6380 return -EINVAL;
6381
6382 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6383 if (!len || (len % sizeof(u16)))
6384 return -EINVAL;
6385
6386 params.n_counter_offsets_beacon = len / sizeof(u16);
6387 if (rdev->wiphy.max_num_csa_counters &&
6388 (params.n_counter_offsets_beacon >
6389 rdev->wiphy.max_num_csa_counters))
6390 return -EINVAL;
6391
6392 params.counter_offsets_beacon =
6393 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6394
6395 /* sanity checks - counters should fit and be the same */
6396 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6397 u16 offset = params.counter_offsets_beacon[i];
6398
6399 if (offset >= params.beacon_csa.tail_len)
6400 return -EINVAL;
6401
6402 if (params.beacon_csa.tail[offset] != params.count)
6403 return -EINVAL;
6404 }
6405
6406 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6407 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6408 if (!len || (len % sizeof(u16)))
6409 return -EINVAL;
6410
6411 params.n_counter_offsets_presp = len / sizeof(u16);
6412 if (rdev->wiphy.max_num_csa_counters &&
6413 (params.n_counter_offsets_beacon >
6414 rdev->wiphy.max_num_csa_counters))
6415 return -EINVAL;
6416
6417 params.counter_offsets_presp =
6418 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6419
6420 /* sanity checks - counters should fit and be the same */
6421 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6422 u16 offset = params.counter_offsets_presp[i];
6423
6424 if (offset >= params.beacon_csa.probe_resp_len)
6425 return -EINVAL;
6426
6427 if (params.beacon_csa.probe_resp[offset] !=
6428 params.count)
6429 return -EINVAL;
6430 }
6431 }
6432
6433 skip_beacons:
6434 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6435 if (err)
6436 return err;
6437
6438 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6439 wdev->iftype))
6440 return -EINVAL;
6441
6442 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6443 &params.chandef,
6444 wdev->iftype);
6445 if (err < 0)
6446 return err;
6447
6448 if (err > 0)
6449 params.radar_required = true;
6450
6451 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6452 params.block_tx = true;
6453
6454 wdev_lock(wdev);
6455 err = rdev_channel_switch(rdev, dev, &params);
6456 wdev_unlock(wdev);
6457
6458 return err;
6459 }
6460
6461 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6462 u32 seq, int flags,
6463 struct cfg80211_registered_device *rdev,
6464 struct wireless_dev *wdev,
6465 struct cfg80211_internal_bss *intbss)
6466 {
6467 struct cfg80211_bss *res = &intbss->pub;
6468 const struct cfg80211_bss_ies *ies;
6469 void *hdr;
6470 struct nlattr *bss;
6471
6472 ASSERT_WDEV_LOCK(wdev);
6473
6474 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6475 NL80211_CMD_NEW_SCAN_RESULTS);
6476 if (!hdr)
6477 return -1;
6478
6479 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6480
6481 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6482 goto nla_put_failure;
6483 if (wdev->netdev &&
6484 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6485 goto nla_put_failure;
6486 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6487 goto nla_put_failure;
6488
6489 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6490 if (!bss)
6491 goto nla_put_failure;
6492 if ((!is_zero_ether_addr(res->bssid) &&
6493 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6494 goto nla_put_failure;
6495
6496 rcu_read_lock();
6497 /* indicate whether we have probe response data or not */
6498 if (rcu_access_pointer(res->proberesp_ies) &&
6499 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6500 goto fail_unlock_rcu;
6501
6502 /* this pointer prefers to be pointed to probe response data
6503 * but is always valid
6504 */
6505 ies = rcu_dereference(res->ies);
6506 if (ies) {
6507 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6508 goto fail_unlock_rcu;
6509 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6510 ies->len, ies->data))
6511 goto fail_unlock_rcu;
6512 }
6513
6514 /* and this pointer is always (unless driver didn't know) beacon data */
6515 ies = rcu_dereference(res->beacon_ies);
6516 if (ies && ies->from_beacon) {
6517 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6518 goto fail_unlock_rcu;
6519 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6520 ies->len, ies->data))
6521 goto fail_unlock_rcu;
6522 }
6523 rcu_read_unlock();
6524
6525 if (res->beacon_interval &&
6526 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6527 goto nla_put_failure;
6528 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6529 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6530 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6531 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6532 jiffies_to_msecs(jiffies - intbss->ts)))
6533 goto nla_put_failure;
6534
6535 switch (rdev->wiphy.signal_type) {
6536 case CFG80211_SIGNAL_TYPE_MBM:
6537 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6538 goto nla_put_failure;
6539 break;
6540 case CFG80211_SIGNAL_TYPE_UNSPEC:
6541 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6542 goto nla_put_failure;
6543 break;
6544 default:
6545 break;
6546 }
6547
6548 switch (wdev->iftype) {
6549 case NL80211_IFTYPE_P2P_CLIENT:
6550 case NL80211_IFTYPE_STATION:
6551 if (intbss == wdev->current_bss &&
6552 nla_put_u32(msg, NL80211_BSS_STATUS,
6553 NL80211_BSS_STATUS_ASSOCIATED))
6554 goto nla_put_failure;
6555 break;
6556 case NL80211_IFTYPE_ADHOC:
6557 if (intbss == wdev->current_bss &&
6558 nla_put_u32(msg, NL80211_BSS_STATUS,
6559 NL80211_BSS_STATUS_IBSS_JOINED))
6560 goto nla_put_failure;
6561 break;
6562 default:
6563 break;
6564 }
6565
6566 nla_nest_end(msg, bss);
6567
6568 return genlmsg_end(msg, hdr);
6569
6570 fail_unlock_rcu:
6571 rcu_read_unlock();
6572 nla_put_failure:
6573 genlmsg_cancel(msg, hdr);
6574 return -EMSGSIZE;
6575 }
6576
6577 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6578 {
6579 struct cfg80211_registered_device *rdev;
6580 struct cfg80211_internal_bss *scan;
6581 struct wireless_dev *wdev;
6582 int start = cb->args[2], idx = 0;
6583 int err;
6584
6585 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6586 if (err)
6587 return err;
6588
6589 wdev_lock(wdev);
6590 spin_lock_bh(&rdev->bss_lock);
6591 cfg80211_bss_expire(rdev);
6592
6593 cb->seq = rdev->bss_generation;
6594
6595 list_for_each_entry(scan, &rdev->bss_list, list) {
6596 if (++idx <= start)
6597 continue;
6598 if (nl80211_send_bss(skb, cb,
6599 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6600 rdev, wdev, scan) < 0) {
6601 idx--;
6602 break;
6603 }
6604 }
6605
6606 spin_unlock_bh(&rdev->bss_lock);
6607 wdev_unlock(wdev);
6608
6609 cb->args[2] = idx;
6610 nl80211_finish_wdev_dump(rdev);
6611
6612 return skb->len;
6613 }
6614
6615 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6616 int flags, struct net_device *dev,
6617 bool allow_radio_stats,
6618 struct survey_info *survey)
6619 {
6620 void *hdr;
6621 struct nlattr *infoattr;
6622
6623 /* skip radio stats if userspace didn't request them */
6624 if (!survey->channel && !allow_radio_stats)
6625 return 0;
6626
6627 hdr = nl80211hdr_put(msg, portid, seq, flags,
6628 NL80211_CMD_NEW_SURVEY_RESULTS);
6629 if (!hdr)
6630 return -ENOMEM;
6631
6632 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6633 goto nla_put_failure;
6634
6635 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6636 if (!infoattr)
6637 goto nla_put_failure;
6638
6639 if (survey->channel &&
6640 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6641 survey->channel->center_freq))
6642 goto nla_put_failure;
6643
6644 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6645 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6646 goto nla_put_failure;
6647 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6648 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6649 goto nla_put_failure;
6650 if ((survey->filled & SURVEY_INFO_TIME) &&
6651 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6652 survey->time))
6653 goto nla_put_failure;
6654 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6655 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6656 survey->time_busy))
6657 goto nla_put_failure;
6658 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6659 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6660 survey->time_ext_busy))
6661 goto nla_put_failure;
6662 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6663 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6664 survey->time_rx))
6665 goto nla_put_failure;
6666 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6667 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6668 survey->time_tx))
6669 goto nla_put_failure;
6670
6671 nla_nest_end(msg, infoattr);
6672
6673 return genlmsg_end(msg, hdr);
6674
6675 nla_put_failure:
6676 genlmsg_cancel(msg, hdr);
6677 return -EMSGSIZE;
6678 }
6679
6680 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6681 {
6682 struct survey_info survey;
6683 struct cfg80211_registered_device *rdev;
6684 struct wireless_dev *wdev;
6685 int survey_idx = cb->args[2];
6686 int res;
6687 bool radio_stats;
6688
6689 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6690 if (res)
6691 return res;
6692
6693 /* prepare_wdev_dump parsed the attributes */
6694 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6695
6696 if (!wdev->netdev) {
6697 res = -EINVAL;
6698 goto out_err;
6699 }
6700
6701 if (!rdev->ops->dump_survey) {
6702 res = -EOPNOTSUPP;
6703 goto out_err;
6704 }
6705
6706 while (1) {
6707 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6708 if (res == -ENOENT)
6709 break;
6710 if (res)
6711 goto out_err;
6712
6713 /* don't send disabled channels, but do send non-channel data */
6714 if (survey.channel &&
6715 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6716 survey_idx++;
6717 continue;
6718 }
6719
6720 if (nl80211_send_survey(skb,
6721 NETLINK_CB(cb->skb).portid,
6722 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6723 wdev->netdev, radio_stats, &survey) < 0)
6724 goto out;
6725 survey_idx++;
6726 }
6727
6728 out:
6729 cb->args[2] = survey_idx;
6730 res = skb->len;
6731 out_err:
6732 nl80211_finish_wdev_dump(rdev);
6733 return res;
6734 }
6735
6736 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6737 {
6738 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6739 NL80211_WPA_VERSION_2));
6740 }
6741
6742 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6743 {
6744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6745 struct net_device *dev = info->user_ptr[1];
6746 struct ieee80211_channel *chan;
6747 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6748 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6749 enum nl80211_auth_type auth_type;
6750 struct key_parse key;
6751 bool local_state_change;
6752
6753 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6754 return -EINVAL;
6755
6756 if (!info->attrs[NL80211_ATTR_MAC])
6757 return -EINVAL;
6758
6759 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6760 return -EINVAL;
6761
6762 if (!info->attrs[NL80211_ATTR_SSID])
6763 return -EINVAL;
6764
6765 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6766 return -EINVAL;
6767
6768 err = nl80211_parse_key(info, &key);
6769 if (err)
6770 return err;
6771
6772 if (key.idx >= 0) {
6773 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6774 return -EINVAL;
6775 if (!key.p.key || !key.p.key_len)
6776 return -EINVAL;
6777 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6778 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6779 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6780 key.p.key_len != WLAN_KEY_LEN_WEP104))
6781 return -EINVAL;
6782 if (key.idx > 4)
6783 return -EINVAL;
6784 } else {
6785 key.p.key_len = 0;
6786 key.p.key = NULL;
6787 }
6788
6789 if (key.idx >= 0) {
6790 int i;
6791 bool ok = false;
6792 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6793 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6794 ok = true;
6795 break;
6796 }
6797 }
6798 if (!ok)
6799 return -EINVAL;
6800 }
6801
6802 if (!rdev->ops->auth)
6803 return -EOPNOTSUPP;
6804
6805 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6806 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6807 return -EOPNOTSUPP;
6808
6809 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6810 chan = nl80211_get_valid_chan(&rdev->wiphy,
6811 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6812 if (!chan)
6813 return -EINVAL;
6814
6815 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6816 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6817
6818 if (info->attrs[NL80211_ATTR_IE]) {
6819 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6820 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6821 }
6822
6823 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6824 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6825 return -EINVAL;
6826
6827 if (auth_type == NL80211_AUTHTYPE_SAE &&
6828 !info->attrs[NL80211_ATTR_SAE_DATA])
6829 return -EINVAL;
6830
6831 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6832 if (auth_type != NL80211_AUTHTYPE_SAE)
6833 return -EINVAL;
6834 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6835 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6836 /* need to include at least Auth Transaction and Status Code */
6837 if (sae_data_len < 4)
6838 return -EINVAL;
6839 }
6840
6841 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6842
6843 /*
6844 * Since we no longer track auth state, ignore
6845 * requests to only change local state.
6846 */
6847 if (local_state_change)
6848 return 0;
6849
6850 wdev_lock(dev->ieee80211_ptr);
6851 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6852 ssid, ssid_len, ie, ie_len,
6853 key.p.key, key.p.key_len, key.idx,
6854 sae_data, sae_data_len);
6855 wdev_unlock(dev->ieee80211_ptr);
6856 return err;
6857 }
6858
6859 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6860 struct genl_info *info,
6861 struct cfg80211_crypto_settings *settings,
6862 int cipher_limit)
6863 {
6864 memset(settings, 0, sizeof(*settings));
6865
6866 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6867
6868 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6869 u16 proto;
6870 proto = nla_get_u16(
6871 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6872 settings->control_port_ethertype = cpu_to_be16(proto);
6873 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6874 proto != ETH_P_PAE)
6875 return -EINVAL;
6876 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6877 settings->control_port_no_encrypt = true;
6878 } else
6879 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6880
6881 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6882 void *data;
6883 int len, i;
6884
6885 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6886 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6887 settings->n_ciphers_pairwise = len / sizeof(u32);
6888
6889 if (len % sizeof(u32))
6890 return -EINVAL;
6891
6892 if (settings->n_ciphers_pairwise > cipher_limit)
6893 return -EINVAL;
6894
6895 memcpy(settings->ciphers_pairwise, data, len);
6896
6897 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6898 if (!cfg80211_supported_cipher_suite(
6899 &rdev->wiphy,
6900 settings->ciphers_pairwise[i]))
6901 return -EINVAL;
6902 }
6903
6904 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6905 settings->cipher_group =
6906 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6907 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6908 settings->cipher_group))
6909 return -EINVAL;
6910 }
6911
6912 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6913 settings->wpa_versions =
6914 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6915 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6916 return -EINVAL;
6917 }
6918
6919 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6920 void *data;
6921 int len;
6922
6923 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6924 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6925 settings->n_akm_suites = len / sizeof(u32);
6926
6927 if (len % sizeof(u32))
6928 return -EINVAL;
6929
6930 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6931 return -EINVAL;
6932
6933 memcpy(settings->akm_suites, data, len);
6934 }
6935
6936 return 0;
6937 }
6938
6939 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6940 {
6941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6942 struct net_device *dev = info->user_ptr[1];
6943 struct ieee80211_channel *chan;
6944 struct cfg80211_assoc_request req = {};
6945 const u8 *bssid, *ssid;
6946 int err, ssid_len = 0;
6947
6948 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6949 return -EINVAL;
6950
6951 if (!info->attrs[NL80211_ATTR_MAC] ||
6952 !info->attrs[NL80211_ATTR_SSID] ||
6953 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6954 return -EINVAL;
6955
6956 if (!rdev->ops->assoc)
6957 return -EOPNOTSUPP;
6958
6959 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6960 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6961 return -EOPNOTSUPP;
6962
6963 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6964
6965 chan = nl80211_get_valid_chan(&rdev->wiphy,
6966 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6967 if (!chan)
6968 return -EINVAL;
6969
6970 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6971 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6972
6973 if (info->attrs[NL80211_ATTR_IE]) {
6974 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6975 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6976 }
6977
6978 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6979 enum nl80211_mfp mfp =
6980 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6981 if (mfp == NL80211_MFP_REQUIRED)
6982 req.use_mfp = true;
6983 else if (mfp != NL80211_MFP_NO)
6984 return -EINVAL;
6985 }
6986
6987 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6988 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6989
6990 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6991 req.flags |= ASSOC_REQ_DISABLE_HT;
6992
6993 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6994 memcpy(&req.ht_capa_mask,
6995 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6996 sizeof(req.ht_capa_mask));
6997
6998 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6999 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7000 return -EINVAL;
7001 memcpy(&req.ht_capa,
7002 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7003 sizeof(req.ht_capa));
7004 }
7005
7006 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7007 req.flags |= ASSOC_REQ_DISABLE_VHT;
7008
7009 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7010 memcpy(&req.vht_capa_mask,
7011 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7012 sizeof(req.vht_capa_mask));
7013
7014 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7015 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7016 return -EINVAL;
7017 memcpy(&req.vht_capa,
7018 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7019 sizeof(req.vht_capa));
7020 }
7021
7022 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7023 if (!(rdev->wiphy.features &
7024 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7025 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7026 return -EINVAL;
7027 req.flags |= ASSOC_REQ_USE_RRM;
7028 }
7029
7030 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7031 if (!err) {
7032 wdev_lock(dev->ieee80211_ptr);
7033 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7034 ssid, ssid_len, &req);
7035 wdev_unlock(dev->ieee80211_ptr);
7036 }
7037
7038 return err;
7039 }
7040
7041 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7042 {
7043 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7044 struct net_device *dev = info->user_ptr[1];
7045 const u8 *ie = NULL, *bssid;
7046 int ie_len = 0, err;
7047 u16 reason_code;
7048 bool local_state_change;
7049
7050 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7051 return -EINVAL;
7052
7053 if (!info->attrs[NL80211_ATTR_MAC])
7054 return -EINVAL;
7055
7056 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7057 return -EINVAL;
7058
7059 if (!rdev->ops->deauth)
7060 return -EOPNOTSUPP;
7061
7062 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7063 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7064 return -EOPNOTSUPP;
7065
7066 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7067
7068 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7069 if (reason_code == 0) {
7070 /* Reason Code 0 is reserved */
7071 return -EINVAL;
7072 }
7073
7074 if (info->attrs[NL80211_ATTR_IE]) {
7075 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7076 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7077 }
7078
7079 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7080
7081 wdev_lock(dev->ieee80211_ptr);
7082 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7083 local_state_change);
7084 wdev_unlock(dev->ieee80211_ptr);
7085 return err;
7086 }
7087
7088 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7089 {
7090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7091 struct net_device *dev = info->user_ptr[1];
7092 const u8 *ie = NULL, *bssid;
7093 int ie_len = 0, err;
7094 u16 reason_code;
7095 bool local_state_change;
7096
7097 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7098 return -EINVAL;
7099
7100 if (!info->attrs[NL80211_ATTR_MAC])
7101 return -EINVAL;
7102
7103 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7104 return -EINVAL;
7105
7106 if (!rdev->ops->disassoc)
7107 return -EOPNOTSUPP;
7108
7109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7110 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7111 return -EOPNOTSUPP;
7112
7113 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7114
7115 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7116 if (reason_code == 0) {
7117 /* Reason Code 0 is reserved */
7118 return -EINVAL;
7119 }
7120
7121 if (info->attrs[NL80211_ATTR_IE]) {
7122 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7123 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7124 }
7125
7126 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7127
7128 wdev_lock(dev->ieee80211_ptr);
7129 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7130 local_state_change);
7131 wdev_unlock(dev->ieee80211_ptr);
7132 return err;
7133 }
7134
7135 static bool
7136 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7137 int mcast_rate[IEEE80211_NUM_BANDS],
7138 int rateval)
7139 {
7140 struct wiphy *wiphy = &rdev->wiphy;
7141 bool found = false;
7142 int band, i;
7143
7144 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7145 struct ieee80211_supported_band *sband;
7146
7147 sband = wiphy->bands[band];
7148 if (!sband)
7149 continue;
7150
7151 for (i = 0; i < sband->n_bitrates; i++) {
7152 if (sband->bitrates[i].bitrate == rateval) {
7153 mcast_rate[band] = i + 1;
7154 found = true;
7155 break;
7156 }
7157 }
7158 }
7159
7160 return found;
7161 }
7162
7163 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7164 {
7165 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7166 struct net_device *dev = info->user_ptr[1];
7167 struct cfg80211_ibss_params ibss;
7168 struct wiphy *wiphy;
7169 struct cfg80211_cached_keys *connkeys = NULL;
7170 int err;
7171
7172 memset(&ibss, 0, sizeof(ibss));
7173
7174 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7175 return -EINVAL;
7176
7177 if (!info->attrs[NL80211_ATTR_SSID] ||
7178 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7179 return -EINVAL;
7180
7181 ibss.beacon_interval = 100;
7182
7183 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7184 ibss.beacon_interval =
7185 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7186 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7187 return -EINVAL;
7188 }
7189
7190 if (!rdev->ops->join_ibss)
7191 return -EOPNOTSUPP;
7192
7193 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7194 return -EOPNOTSUPP;
7195
7196 wiphy = &rdev->wiphy;
7197
7198 if (info->attrs[NL80211_ATTR_MAC]) {
7199 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7200
7201 if (!is_valid_ether_addr(ibss.bssid))
7202 return -EINVAL;
7203 }
7204 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7205 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7206
7207 if (info->attrs[NL80211_ATTR_IE]) {
7208 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7209 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7210 }
7211
7212 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7213 if (err)
7214 return err;
7215
7216 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7217 NL80211_IFTYPE_ADHOC))
7218 return -EINVAL;
7219
7220 switch (ibss.chandef.width) {
7221 case NL80211_CHAN_WIDTH_5:
7222 case NL80211_CHAN_WIDTH_10:
7223 case NL80211_CHAN_WIDTH_20_NOHT:
7224 break;
7225 case NL80211_CHAN_WIDTH_20:
7226 case NL80211_CHAN_WIDTH_40:
7227 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7228 break;
7229 default:
7230 return -EINVAL;
7231 }
7232
7233 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7234 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7235
7236 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7237 u8 *rates =
7238 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7239 int n_rates =
7240 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7241 struct ieee80211_supported_band *sband =
7242 wiphy->bands[ibss.chandef.chan->band];
7243
7244 err = ieee80211_get_ratemask(sband, rates, n_rates,
7245 &ibss.basic_rates);
7246 if (err)
7247 return err;
7248 }
7249
7250 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7251 memcpy(&ibss.ht_capa_mask,
7252 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7253 sizeof(ibss.ht_capa_mask));
7254
7255 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7256 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7257 return -EINVAL;
7258 memcpy(&ibss.ht_capa,
7259 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7260 sizeof(ibss.ht_capa));
7261 }
7262
7263 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7264 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7265 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7266 return -EINVAL;
7267
7268 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7269 bool no_ht = false;
7270
7271 connkeys = nl80211_parse_connkeys(rdev,
7272 info->attrs[NL80211_ATTR_KEYS],
7273 &no_ht);
7274 if (IS_ERR(connkeys))
7275 return PTR_ERR(connkeys);
7276
7277 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7278 no_ht) {
7279 kfree(connkeys);
7280 return -EINVAL;
7281 }
7282 }
7283
7284 ibss.control_port =
7285 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7286
7287 ibss.userspace_handles_dfs =
7288 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7289
7290 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7291 if (err)
7292 kzfree(connkeys);
7293 return err;
7294 }
7295
7296 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7297 {
7298 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7299 struct net_device *dev = info->user_ptr[1];
7300
7301 if (!rdev->ops->leave_ibss)
7302 return -EOPNOTSUPP;
7303
7304 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7305 return -EOPNOTSUPP;
7306
7307 return cfg80211_leave_ibss(rdev, dev, false);
7308 }
7309
7310 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7311 {
7312 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7313 struct net_device *dev = info->user_ptr[1];
7314 int mcast_rate[IEEE80211_NUM_BANDS];
7315 u32 nla_rate;
7316 int err;
7317
7318 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7319 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7320 return -EOPNOTSUPP;
7321
7322 if (!rdev->ops->set_mcast_rate)
7323 return -EOPNOTSUPP;
7324
7325 memset(mcast_rate, 0, sizeof(mcast_rate));
7326
7327 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7328 return -EINVAL;
7329
7330 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7331 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7332 return -EINVAL;
7333
7334 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7335
7336 return err;
7337 }
7338
7339 static struct sk_buff *
7340 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7341 int approxlen, u32 portid, u32 seq,
7342 enum nl80211_commands cmd,
7343 enum nl80211_attrs attr,
7344 const struct nl80211_vendor_cmd_info *info,
7345 gfp_t gfp)
7346 {
7347 struct sk_buff *skb;
7348 void *hdr;
7349 struct nlattr *data;
7350
7351 skb = nlmsg_new(approxlen + 100, gfp);
7352 if (!skb)
7353 return NULL;
7354
7355 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7356 if (!hdr) {
7357 kfree_skb(skb);
7358 return NULL;
7359 }
7360
7361 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7362 goto nla_put_failure;
7363
7364 if (info) {
7365 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7366 info->vendor_id))
7367 goto nla_put_failure;
7368 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7369 info->subcmd))
7370 goto nla_put_failure;
7371 }
7372
7373 data = nla_nest_start(skb, attr);
7374
7375 ((void **)skb->cb)[0] = rdev;
7376 ((void **)skb->cb)[1] = hdr;
7377 ((void **)skb->cb)[2] = data;
7378
7379 return skb;
7380
7381 nla_put_failure:
7382 kfree_skb(skb);
7383 return NULL;
7384 }
7385
7386 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7387 enum nl80211_commands cmd,
7388 enum nl80211_attrs attr,
7389 int vendor_event_idx,
7390 int approxlen, gfp_t gfp)
7391 {
7392 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7393 const struct nl80211_vendor_cmd_info *info;
7394
7395 switch (cmd) {
7396 case NL80211_CMD_TESTMODE:
7397 if (WARN_ON(vendor_event_idx != -1))
7398 return NULL;
7399 info = NULL;
7400 break;
7401 case NL80211_CMD_VENDOR:
7402 if (WARN_ON(vendor_event_idx < 0 ||
7403 vendor_event_idx >= wiphy->n_vendor_events))
7404 return NULL;
7405 info = &wiphy->vendor_events[vendor_event_idx];
7406 break;
7407 default:
7408 WARN_ON(1);
7409 return NULL;
7410 }
7411
7412 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7413 cmd, attr, info, gfp);
7414 }
7415 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7416
7417 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7418 {
7419 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7420 void *hdr = ((void **)skb->cb)[1];
7421 struct nlattr *data = ((void **)skb->cb)[2];
7422 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7423
7424 /* clear CB data for netlink core to own from now on */
7425 memset(skb->cb, 0, sizeof(skb->cb));
7426
7427 nla_nest_end(skb, data);
7428 genlmsg_end(skb, hdr);
7429
7430 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7431 mcgrp = NL80211_MCGRP_VENDOR;
7432
7433 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7434 mcgrp, gfp);
7435 }
7436 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7437
7438 #ifdef CONFIG_NL80211_TESTMODE
7439 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7440 {
7441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7442 struct wireless_dev *wdev =
7443 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7444 int err;
7445
7446 if (!rdev->ops->testmode_cmd)
7447 return -EOPNOTSUPP;
7448
7449 if (IS_ERR(wdev)) {
7450 err = PTR_ERR(wdev);
7451 if (err != -EINVAL)
7452 return err;
7453 wdev = NULL;
7454 } else if (wdev->wiphy != &rdev->wiphy) {
7455 return -EINVAL;
7456 }
7457
7458 if (!info->attrs[NL80211_ATTR_TESTDATA])
7459 return -EINVAL;
7460
7461 rdev->cur_cmd_info = info;
7462 err = rdev_testmode_cmd(rdev, wdev,
7463 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7464 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7465 rdev->cur_cmd_info = NULL;
7466
7467 return err;
7468 }
7469
7470 static int nl80211_testmode_dump(struct sk_buff *skb,
7471 struct netlink_callback *cb)
7472 {
7473 struct cfg80211_registered_device *rdev;
7474 int err;
7475 long phy_idx;
7476 void *data = NULL;
7477 int data_len = 0;
7478
7479 rtnl_lock();
7480
7481 if (cb->args[0]) {
7482 /*
7483 * 0 is a valid index, but not valid for args[0],
7484 * so we need to offset by 1.
7485 */
7486 phy_idx = cb->args[0] - 1;
7487 } else {
7488 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7489 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7490 nl80211_policy);
7491 if (err)
7492 goto out_err;
7493
7494 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7495 nl80211_fam.attrbuf);
7496 if (IS_ERR(rdev)) {
7497 err = PTR_ERR(rdev);
7498 goto out_err;
7499 }
7500 phy_idx = rdev->wiphy_idx;
7501 rdev = NULL;
7502
7503 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7504 cb->args[1] =
7505 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7506 }
7507
7508 if (cb->args[1]) {
7509 data = nla_data((void *)cb->args[1]);
7510 data_len = nla_len((void *)cb->args[1]);
7511 }
7512
7513 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7514 if (!rdev) {
7515 err = -ENOENT;
7516 goto out_err;
7517 }
7518
7519 if (!rdev->ops->testmode_dump) {
7520 err = -EOPNOTSUPP;
7521 goto out_err;
7522 }
7523
7524 while (1) {
7525 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7526 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7527 NL80211_CMD_TESTMODE);
7528 struct nlattr *tmdata;
7529
7530 if (!hdr)
7531 break;
7532
7533 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7534 genlmsg_cancel(skb, hdr);
7535 break;
7536 }
7537
7538 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7539 if (!tmdata) {
7540 genlmsg_cancel(skb, hdr);
7541 break;
7542 }
7543 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7544 nla_nest_end(skb, tmdata);
7545
7546 if (err == -ENOBUFS || err == -ENOENT) {
7547 genlmsg_cancel(skb, hdr);
7548 break;
7549 } else if (err) {
7550 genlmsg_cancel(skb, hdr);
7551 goto out_err;
7552 }
7553
7554 genlmsg_end(skb, hdr);
7555 }
7556
7557 err = skb->len;
7558 /* see above */
7559 cb->args[0] = phy_idx + 1;
7560 out_err:
7561 rtnl_unlock();
7562 return err;
7563 }
7564 #endif
7565
7566 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7567 {
7568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7569 struct net_device *dev = info->user_ptr[1];
7570 struct cfg80211_connect_params connect;
7571 struct wiphy *wiphy;
7572 struct cfg80211_cached_keys *connkeys = NULL;
7573 int err;
7574
7575 memset(&connect, 0, sizeof(connect));
7576
7577 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7578 return -EINVAL;
7579
7580 if (!info->attrs[NL80211_ATTR_SSID] ||
7581 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7582 return -EINVAL;
7583
7584 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7585 connect.auth_type =
7586 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7587 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7588 NL80211_CMD_CONNECT))
7589 return -EINVAL;
7590 } else
7591 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7592
7593 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7594
7595 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7596 NL80211_MAX_NR_CIPHER_SUITES);
7597 if (err)
7598 return err;
7599
7600 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7601 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7602 return -EOPNOTSUPP;
7603
7604 wiphy = &rdev->wiphy;
7605
7606 connect.bg_scan_period = -1;
7607 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7608 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7609 connect.bg_scan_period =
7610 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7611 }
7612
7613 if (info->attrs[NL80211_ATTR_MAC])
7614 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7615 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7616 connect.bssid_hint =
7617 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7618 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7619 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7620
7621 if (info->attrs[NL80211_ATTR_IE]) {
7622 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7623 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7624 }
7625
7626 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7627 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7628 if (connect.mfp != NL80211_MFP_REQUIRED &&
7629 connect.mfp != NL80211_MFP_NO)
7630 return -EINVAL;
7631 } else {
7632 connect.mfp = NL80211_MFP_NO;
7633 }
7634
7635 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7636 connect.channel = nl80211_get_valid_chan(
7637 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7638 if (!connect.channel)
7639 return -EINVAL;
7640 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7641 connect.channel_hint = nl80211_get_valid_chan(
7642 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7643 if (!connect.channel_hint)
7644 return -EINVAL;
7645 }
7646
7647 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7648 connkeys = nl80211_parse_connkeys(rdev,
7649 info->attrs[NL80211_ATTR_KEYS], NULL);
7650 if (IS_ERR(connkeys))
7651 return PTR_ERR(connkeys);
7652 }
7653
7654 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7655 connect.flags |= ASSOC_REQ_DISABLE_HT;
7656
7657 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7658 memcpy(&connect.ht_capa_mask,
7659 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7660 sizeof(connect.ht_capa_mask));
7661
7662 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7663 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7664 kzfree(connkeys);
7665 return -EINVAL;
7666 }
7667 memcpy(&connect.ht_capa,
7668 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7669 sizeof(connect.ht_capa));
7670 }
7671
7672 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7673 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7674
7675 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7676 memcpy(&connect.vht_capa_mask,
7677 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7678 sizeof(connect.vht_capa_mask));
7679
7680 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7681 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7682 kzfree(connkeys);
7683 return -EINVAL;
7684 }
7685 memcpy(&connect.vht_capa,
7686 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7687 sizeof(connect.vht_capa));
7688 }
7689
7690 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7691 if (!(rdev->wiphy.features &
7692 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7693 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7694 return -EINVAL;
7695 connect.flags |= ASSOC_REQ_USE_RRM;
7696 }
7697
7698 wdev_lock(dev->ieee80211_ptr);
7699 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7700 wdev_unlock(dev->ieee80211_ptr);
7701 if (err)
7702 kzfree(connkeys);
7703 return err;
7704 }
7705
7706 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7707 {
7708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7709 struct net_device *dev = info->user_ptr[1];
7710 u16 reason;
7711 int ret;
7712
7713 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7714 reason = WLAN_REASON_DEAUTH_LEAVING;
7715 else
7716 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7717
7718 if (reason == 0)
7719 return -EINVAL;
7720
7721 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7722 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7723 return -EOPNOTSUPP;
7724
7725 wdev_lock(dev->ieee80211_ptr);
7726 ret = cfg80211_disconnect(rdev, dev, reason, true);
7727 wdev_unlock(dev->ieee80211_ptr);
7728 return ret;
7729 }
7730
7731 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7732 {
7733 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7734 struct net *net;
7735 int err;
7736 u32 pid;
7737
7738 if (!info->attrs[NL80211_ATTR_PID])
7739 return -EINVAL;
7740
7741 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7742
7743 net = get_net_ns_by_pid(pid);
7744 if (IS_ERR(net))
7745 return PTR_ERR(net);
7746
7747 err = 0;
7748
7749 /* check if anything to do */
7750 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7751 err = cfg80211_switch_netns(rdev, net);
7752
7753 put_net(net);
7754 return err;
7755 }
7756
7757 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7758 {
7759 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7760 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7761 struct cfg80211_pmksa *pmksa) = NULL;
7762 struct net_device *dev = info->user_ptr[1];
7763 struct cfg80211_pmksa pmksa;
7764
7765 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7766
7767 if (!info->attrs[NL80211_ATTR_MAC])
7768 return -EINVAL;
7769
7770 if (!info->attrs[NL80211_ATTR_PMKID])
7771 return -EINVAL;
7772
7773 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7774 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7775
7776 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7777 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7778 return -EOPNOTSUPP;
7779
7780 switch (info->genlhdr->cmd) {
7781 case NL80211_CMD_SET_PMKSA:
7782 rdev_ops = rdev->ops->set_pmksa;
7783 break;
7784 case NL80211_CMD_DEL_PMKSA:
7785 rdev_ops = rdev->ops->del_pmksa;
7786 break;
7787 default:
7788 WARN_ON(1);
7789 break;
7790 }
7791
7792 if (!rdev_ops)
7793 return -EOPNOTSUPP;
7794
7795 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7796 }
7797
7798 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7799 {
7800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7801 struct net_device *dev = info->user_ptr[1];
7802
7803 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7804 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7805 return -EOPNOTSUPP;
7806
7807 if (!rdev->ops->flush_pmksa)
7808 return -EOPNOTSUPP;
7809
7810 return rdev_flush_pmksa(rdev, dev);
7811 }
7812
7813 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7814 {
7815 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7816 struct net_device *dev = info->user_ptr[1];
7817 u8 action_code, dialog_token;
7818 u32 peer_capability = 0;
7819 u16 status_code;
7820 u8 *peer;
7821 bool initiator;
7822
7823 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7824 !rdev->ops->tdls_mgmt)
7825 return -EOPNOTSUPP;
7826
7827 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7828 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7829 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7830 !info->attrs[NL80211_ATTR_IE] ||
7831 !info->attrs[NL80211_ATTR_MAC])
7832 return -EINVAL;
7833
7834 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7835 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7836 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7837 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7838 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7839 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7840 peer_capability =
7841 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7842
7843 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7844 dialog_token, status_code, peer_capability,
7845 initiator,
7846 nla_data(info->attrs[NL80211_ATTR_IE]),
7847 nla_len(info->attrs[NL80211_ATTR_IE]));
7848 }
7849
7850 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7851 {
7852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7853 struct net_device *dev = info->user_ptr[1];
7854 enum nl80211_tdls_operation operation;
7855 u8 *peer;
7856
7857 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7858 !rdev->ops->tdls_oper)
7859 return -EOPNOTSUPP;
7860
7861 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7862 !info->attrs[NL80211_ATTR_MAC])
7863 return -EINVAL;
7864
7865 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7866 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7867
7868 return rdev_tdls_oper(rdev, dev, peer, operation);
7869 }
7870
7871 static int nl80211_remain_on_channel(struct sk_buff *skb,
7872 struct genl_info *info)
7873 {
7874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7875 struct wireless_dev *wdev = info->user_ptr[1];
7876 struct cfg80211_chan_def chandef;
7877 struct sk_buff *msg;
7878 void *hdr;
7879 u64 cookie;
7880 u32 duration;
7881 int err;
7882
7883 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7884 !info->attrs[NL80211_ATTR_DURATION])
7885 return -EINVAL;
7886
7887 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7888
7889 if (!rdev->ops->remain_on_channel ||
7890 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7891 return -EOPNOTSUPP;
7892
7893 /*
7894 * We should be on that channel for at least a minimum amount of
7895 * time (10ms) but no longer than the driver supports.
7896 */
7897 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7898 duration > rdev->wiphy.max_remain_on_channel_duration)
7899 return -EINVAL;
7900
7901 err = nl80211_parse_chandef(rdev, info, &chandef);
7902 if (err)
7903 return err;
7904
7905 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7906 if (!msg)
7907 return -ENOMEM;
7908
7909 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7910 NL80211_CMD_REMAIN_ON_CHANNEL);
7911 if (!hdr) {
7912 err = -ENOBUFS;
7913 goto free_msg;
7914 }
7915
7916 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7917 duration, &cookie);
7918
7919 if (err)
7920 goto free_msg;
7921
7922 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7923 goto nla_put_failure;
7924
7925 genlmsg_end(msg, hdr);
7926
7927 return genlmsg_reply(msg, info);
7928
7929 nla_put_failure:
7930 err = -ENOBUFS;
7931 free_msg:
7932 nlmsg_free(msg);
7933 return err;
7934 }
7935
7936 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7937 struct genl_info *info)
7938 {
7939 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7940 struct wireless_dev *wdev = info->user_ptr[1];
7941 u64 cookie;
7942
7943 if (!info->attrs[NL80211_ATTR_COOKIE])
7944 return -EINVAL;
7945
7946 if (!rdev->ops->cancel_remain_on_channel)
7947 return -EOPNOTSUPP;
7948
7949 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7950
7951 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7952 }
7953
7954 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7955 u8 *rates, u8 rates_len)
7956 {
7957 u8 i;
7958 u32 mask = 0;
7959
7960 for (i = 0; i < rates_len; i++) {
7961 int rate = (rates[i] & 0x7f) * 5;
7962 int ridx;
7963 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7964 struct ieee80211_rate *srate =
7965 &sband->bitrates[ridx];
7966 if (rate == srate->bitrate) {
7967 mask |= 1 << ridx;
7968 break;
7969 }
7970 }
7971 if (ridx == sband->n_bitrates)
7972 return 0; /* rate not found */
7973 }
7974
7975 return mask;
7976 }
7977
7978 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7979 u8 *rates, u8 rates_len,
7980 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7981 {
7982 u8 i;
7983
7984 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7985
7986 for (i = 0; i < rates_len; i++) {
7987 int ridx, rbit;
7988
7989 ridx = rates[i] / 8;
7990 rbit = BIT(rates[i] % 8);
7991
7992 /* check validity */
7993 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7994 return false;
7995
7996 /* check availability */
7997 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7998 mcs[ridx] |= rbit;
7999 else
8000 return false;
8001 }
8002
8003 return true;
8004 }
8005
8006 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8007 {
8008 u16 mcs_mask = 0;
8009
8010 switch (vht_mcs_map) {
8011 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8012 break;
8013 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8014 mcs_mask = 0x00FF;
8015 break;
8016 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8017 mcs_mask = 0x01FF;
8018 break;
8019 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8020 mcs_mask = 0x03FF;
8021 break;
8022 default:
8023 break;
8024 }
8025
8026 return mcs_mask;
8027 }
8028
8029 static void vht_build_mcs_mask(u16 vht_mcs_map,
8030 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8031 {
8032 u8 nss;
8033
8034 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8035 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8036 vht_mcs_map >>= 2;
8037 }
8038 }
8039
8040 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8041 struct nl80211_txrate_vht *txrate,
8042 u16 mcs[NL80211_VHT_NSS_MAX])
8043 {
8044 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8045 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8046 u8 i;
8047
8048 if (!sband->vht_cap.vht_supported)
8049 return false;
8050
8051 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8052
8053 /* Build vht_mcs_mask from VHT capabilities */
8054 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8055
8056 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8057 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8058 mcs[i] = txrate->mcs[i];
8059 else
8060 return false;
8061 }
8062
8063 return true;
8064 }
8065
8066 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8067 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8068 .len = NL80211_MAX_SUPP_RATES },
8069 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8070 .len = NL80211_MAX_SUPP_HT_RATES },
8071 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8072 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8073 };
8074
8075 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8076 struct genl_info *info)
8077 {
8078 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8079 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8080 struct cfg80211_bitrate_mask mask;
8081 int rem, i;
8082 struct net_device *dev = info->user_ptr[1];
8083 struct nlattr *tx_rates;
8084 struct ieee80211_supported_band *sband;
8085 u16 vht_tx_mcs_map;
8086
8087 if (!rdev->ops->set_bitrate_mask)
8088 return -EOPNOTSUPP;
8089
8090 memset(&mask, 0, sizeof(mask));
8091 /* Default to all rates enabled */
8092 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8093 sband = rdev->wiphy.bands[i];
8094
8095 if (!sband)
8096 continue;
8097
8098 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8099 memcpy(mask.control[i].ht_mcs,
8100 sband->ht_cap.mcs.rx_mask,
8101 sizeof(mask.control[i].ht_mcs));
8102
8103 if (!sband->vht_cap.vht_supported)
8104 continue;
8105
8106 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8107 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8108 }
8109
8110 /* if no rates are given set it back to the defaults */
8111 if (!info->attrs[NL80211_ATTR_TX_RATES])
8112 goto out;
8113
8114 /*
8115 * The nested attribute uses enum nl80211_band as the index. This maps
8116 * directly to the enum ieee80211_band values used in cfg80211.
8117 */
8118 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8119 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8120 enum ieee80211_band band = nla_type(tx_rates);
8121 int err;
8122
8123 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8124 return -EINVAL;
8125 sband = rdev->wiphy.bands[band];
8126 if (sband == NULL)
8127 return -EINVAL;
8128 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8129 nla_len(tx_rates), nl80211_txattr_policy);
8130 if (err)
8131 return err;
8132 if (tb[NL80211_TXRATE_LEGACY]) {
8133 mask.control[band].legacy = rateset_to_mask(
8134 sband,
8135 nla_data(tb[NL80211_TXRATE_LEGACY]),
8136 nla_len(tb[NL80211_TXRATE_LEGACY]));
8137 if ((mask.control[band].legacy == 0) &&
8138 nla_len(tb[NL80211_TXRATE_LEGACY]))
8139 return -EINVAL;
8140 }
8141 if (tb[NL80211_TXRATE_HT]) {
8142 if (!ht_rateset_to_mask(
8143 sband,
8144 nla_data(tb[NL80211_TXRATE_HT]),
8145 nla_len(tb[NL80211_TXRATE_HT]),
8146 mask.control[band].ht_mcs))
8147 return -EINVAL;
8148 }
8149 if (tb[NL80211_TXRATE_VHT]) {
8150 if (!vht_set_mcs_mask(
8151 sband,
8152 nla_data(tb[NL80211_TXRATE_VHT]),
8153 mask.control[band].vht_mcs))
8154 return -EINVAL;
8155 }
8156 if (tb[NL80211_TXRATE_GI]) {
8157 mask.control[band].gi =
8158 nla_get_u8(tb[NL80211_TXRATE_GI]);
8159 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8160 return -EINVAL;
8161 }
8162
8163 if (mask.control[band].legacy == 0) {
8164 /* don't allow empty legacy rates if HT or VHT
8165 * are not even supported.
8166 */
8167 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8168 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8169 return -EINVAL;
8170
8171 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8172 if (mask.control[band].ht_mcs[i])
8173 goto out;
8174
8175 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8176 if (mask.control[band].vht_mcs[i])
8177 goto out;
8178
8179 /* legacy and mcs rates may not be both empty */
8180 return -EINVAL;
8181 }
8182 }
8183
8184 out:
8185 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8186 }
8187
8188 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8189 {
8190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8191 struct wireless_dev *wdev = info->user_ptr[1];
8192 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8193
8194 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8195 return -EINVAL;
8196
8197 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8198 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8199
8200 switch (wdev->iftype) {
8201 case NL80211_IFTYPE_STATION:
8202 case NL80211_IFTYPE_ADHOC:
8203 case NL80211_IFTYPE_P2P_CLIENT:
8204 case NL80211_IFTYPE_AP:
8205 case NL80211_IFTYPE_AP_VLAN:
8206 case NL80211_IFTYPE_MESH_POINT:
8207 case NL80211_IFTYPE_P2P_GO:
8208 case NL80211_IFTYPE_P2P_DEVICE:
8209 break;
8210 default:
8211 return -EOPNOTSUPP;
8212 }
8213
8214 /* not much point in registering if we can't reply */
8215 if (!rdev->ops->mgmt_tx)
8216 return -EOPNOTSUPP;
8217
8218 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8219 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8220 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8221 }
8222
8223 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8224 {
8225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8226 struct wireless_dev *wdev = info->user_ptr[1];
8227 struct cfg80211_chan_def chandef;
8228 int err;
8229 void *hdr = NULL;
8230 u64 cookie;
8231 struct sk_buff *msg = NULL;
8232 struct cfg80211_mgmt_tx_params params = {
8233 .dont_wait_for_ack =
8234 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8235 };
8236
8237 if (!info->attrs[NL80211_ATTR_FRAME])
8238 return -EINVAL;
8239
8240 if (!rdev->ops->mgmt_tx)
8241 return -EOPNOTSUPP;
8242
8243 switch (wdev->iftype) {
8244 case NL80211_IFTYPE_P2P_DEVICE:
8245 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8246 return -EINVAL;
8247 case NL80211_IFTYPE_STATION:
8248 case NL80211_IFTYPE_ADHOC:
8249 case NL80211_IFTYPE_P2P_CLIENT:
8250 case NL80211_IFTYPE_AP:
8251 case NL80211_IFTYPE_AP_VLAN:
8252 case NL80211_IFTYPE_MESH_POINT:
8253 case NL80211_IFTYPE_P2P_GO:
8254 break;
8255 default:
8256 return -EOPNOTSUPP;
8257 }
8258
8259 if (info->attrs[NL80211_ATTR_DURATION]) {
8260 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8261 return -EINVAL;
8262 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8263
8264 /*
8265 * We should wait on the channel for at least a minimum amount
8266 * of time (10ms) but no longer than the driver supports.
8267 */
8268 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8269 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8270 return -EINVAL;
8271
8272 }
8273
8274 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8275
8276 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8277 return -EINVAL;
8278
8279 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8280
8281 /* get the channel if any has been specified, otherwise pass NULL to
8282 * the driver. The latter will use the current one
8283 */
8284 chandef.chan = NULL;
8285 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8286 err = nl80211_parse_chandef(rdev, info, &chandef);
8287 if (err)
8288 return err;
8289 }
8290
8291 if (!chandef.chan && params.offchan)
8292 return -EINVAL;
8293
8294 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8295 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8296
8297 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8298 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8299 int i;
8300
8301 if (len % sizeof(u16))
8302 return -EINVAL;
8303
8304 params.n_csa_offsets = len / sizeof(u16);
8305 params.csa_offsets =
8306 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8307
8308 /* check that all the offsets fit the frame */
8309 for (i = 0; i < params.n_csa_offsets; i++) {
8310 if (params.csa_offsets[i] >= params.len)
8311 return -EINVAL;
8312 }
8313 }
8314
8315 if (!params.dont_wait_for_ack) {
8316 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8317 if (!msg)
8318 return -ENOMEM;
8319
8320 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8321 NL80211_CMD_FRAME);
8322 if (!hdr) {
8323 err = -ENOBUFS;
8324 goto free_msg;
8325 }
8326 }
8327
8328 params.chan = chandef.chan;
8329 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8330 if (err)
8331 goto free_msg;
8332
8333 if (msg) {
8334 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8335 goto nla_put_failure;
8336
8337 genlmsg_end(msg, hdr);
8338 return genlmsg_reply(msg, info);
8339 }
8340
8341 return 0;
8342
8343 nla_put_failure:
8344 err = -ENOBUFS;
8345 free_msg:
8346 nlmsg_free(msg);
8347 return err;
8348 }
8349
8350 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8351 {
8352 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8353 struct wireless_dev *wdev = info->user_ptr[1];
8354 u64 cookie;
8355
8356 if (!info->attrs[NL80211_ATTR_COOKIE])
8357 return -EINVAL;
8358
8359 if (!rdev->ops->mgmt_tx_cancel_wait)
8360 return -EOPNOTSUPP;
8361
8362 switch (wdev->iftype) {
8363 case NL80211_IFTYPE_STATION:
8364 case NL80211_IFTYPE_ADHOC:
8365 case NL80211_IFTYPE_P2P_CLIENT:
8366 case NL80211_IFTYPE_AP:
8367 case NL80211_IFTYPE_AP_VLAN:
8368 case NL80211_IFTYPE_P2P_GO:
8369 case NL80211_IFTYPE_P2P_DEVICE:
8370 break;
8371 default:
8372 return -EOPNOTSUPP;
8373 }
8374
8375 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8376
8377 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8378 }
8379
8380 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8381 {
8382 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8383 struct wireless_dev *wdev;
8384 struct net_device *dev = info->user_ptr[1];
8385 u8 ps_state;
8386 bool state;
8387 int err;
8388
8389 if (!info->attrs[NL80211_ATTR_PS_STATE])
8390 return -EINVAL;
8391
8392 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8393
8394 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8395 return -EINVAL;
8396
8397 wdev = dev->ieee80211_ptr;
8398
8399 if (!rdev->ops->set_power_mgmt)
8400 return -EOPNOTSUPP;
8401
8402 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8403
8404 if (state == wdev->ps)
8405 return 0;
8406
8407 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8408 if (!err)
8409 wdev->ps = state;
8410 return err;
8411 }
8412
8413 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8414 {
8415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8416 enum nl80211_ps_state ps_state;
8417 struct wireless_dev *wdev;
8418 struct net_device *dev = info->user_ptr[1];
8419 struct sk_buff *msg;
8420 void *hdr;
8421 int err;
8422
8423 wdev = dev->ieee80211_ptr;
8424
8425 if (!rdev->ops->set_power_mgmt)
8426 return -EOPNOTSUPP;
8427
8428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8429 if (!msg)
8430 return -ENOMEM;
8431
8432 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8433 NL80211_CMD_GET_POWER_SAVE);
8434 if (!hdr) {
8435 err = -ENOBUFS;
8436 goto free_msg;
8437 }
8438
8439 if (wdev->ps)
8440 ps_state = NL80211_PS_ENABLED;
8441 else
8442 ps_state = NL80211_PS_DISABLED;
8443
8444 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8445 goto nla_put_failure;
8446
8447 genlmsg_end(msg, hdr);
8448 return genlmsg_reply(msg, info);
8449
8450 nla_put_failure:
8451 err = -ENOBUFS;
8452 free_msg:
8453 nlmsg_free(msg);
8454 return err;
8455 }
8456
8457 static const struct nla_policy
8458 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8459 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8460 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8461 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8462 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8463 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8464 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8465 };
8466
8467 static int nl80211_set_cqm_txe(struct genl_info *info,
8468 u32 rate, u32 pkts, u32 intvl)
8469 {
8470 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8471 struct net_device *dev = info->user_ptr[1];
8472 struct wireless_dev *wdev = dev->ieee80211_ptr;
8473
8474 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8475 return -EINVAL;
8476
8477 if (!rdev->ops->set_cqm_txe_config)
8478 return -EOPNOTSUPP;
8479
8480 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8481 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8482 return -EOPNOTSUPP;
8483
8484 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8485 }
8486
8487 static int nl80211_set_cqm_rssi(struct genl_info *info,
8488 s32 threshold, u32 hysteresis)
8489 {
8490 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8491 struct net_device *dev = info->user_ptr[1];
8492 struct wireless_dev *wdev = dev->ieee80211_ptr;
8493
8494 if (threshold > 0)
8495 return -EINVAL;
8496
8497 /* disabling - hysteresis should also be zero then */
8498 if (threshold == 0)
8499 hysteresis = 0;
8500
8501 if (!rdev->ops->set_cqm_rssi_config)
8502 return -EOPNOTSUPP;
8503
8504 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8505 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8506 return -EOPNOTSUPP;
8507
8508 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8509 }
8510
8511 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8512 {
8513 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8514 struct nlattr *cqm;
8515 int err;
8516
8517 cqm = info->attrs[NL80211_ATTR_CQM];
8518 if (!cqm)
8519 return -EINVAL;
8520
8521 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8522 nl80211_attr_cqm_policy);
8523 if (err)
8524 return err;
8525
8526 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8527 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8528 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8529 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8530
8531 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8532 }
8533
8534 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8535 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8536 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8537 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8538 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8539 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8540
8541 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8542 }
8543
8544 return -EINVAL;
8545 }
8546
8547 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8548 {
8549 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8550 struct net_device *dev = info->user_ptr[1];
8551 struct ocb_setup setup = {};
8552 int err;
8553
8554 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8555 if (err)
8556 return err;
8557
8558 return cfg80211_join_ocb(rdev, dev, &setup);
8559 }
8560
8561 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8562 {
8563 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8564 struct net_device *dev = info->user_ptr[1];
8565
8566 return cfg80211_leave_ocb(rdev, dev);
8567 }
8568
8569 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8570 {
8571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8572 struct net_device *dev = info->user_ptr[1];
8573 struct mesh_config cfg;
8574 struct mesh_setup setup;
8575 int err;
8576
8577 /* start with default */
8578 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8579 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8580
8581 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8582 /* and parse parameters if given */
8583 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8584 if (err)
8585 return err;
8586 }
8587
8588 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8589 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8590 return -EINVAL;
8591
8592 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8593 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8594
8595 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8596 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8597 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8598 return -EINVAL;
8599
8600 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8601 setup.beacon_interval =
8602 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8603 if (setup.beacon_interval < 10 ||
8604 setup.beacon_interval > 10000)
8605 return -EINVAL;
8606 }
8607
8608 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8609 setup.dtim_period =
8610 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8611 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8612 return -EINVAL;
8613 }
8614
8615 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8616 /* parse additional setup parameters if given */
8617 err = nl80211_parse_mesh_setup(info, &setup);
8618 if (err)
8619 return err;
8620 }
8621
8622 if (setup.user_mpm)
8623 cfg.auto_open_plinks = false;
8624
8625 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8626 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8627 if (err)
8628 return err;
8629 } else {
8630 /* cfg80211_join_mesh() will sort it out */
8631 setup.chandef.chan = NULL;
8632 }
8633
8634 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8635 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8636 int n_rates =
8637 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8638 struct ieee80211_supported_band *sband;
8639
8640 if (!setup.chandef.chan)
8641 return -EINVAL;
8642
8643 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8644
8645 err = ieee80211_get_ratemask(sband, rates, n_rates,
8646 &setup.basic_rates);
8647 if (err)
8648 return err;
8649 }
8650
8651 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8652 }
8653
8654 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8655 {
8656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8657 struct net_device *dev = info->user_ptr[1];
8658
8659 return cfg80211_leave_mesh(rdev, dev);
8660 }
8661
8662 #ifdef CONFIG_PM
8663 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8664 struct cfg80211_registered_device *rdev)
8665 {
8666 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8667 struct nlattr *nl_pats, *nl_pat;
8668 int i, pat_len;
8669
8670 if (!wowlan->n_patterns)
8671 return 0;
8672
8673 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8674 if (!nl_pats)
8675 return -ENOBUFS;
8676
8677 for (i = 0; i < wowlan->n_patterns; i++) {
8678 nl_pat = nla_nest_start(msg, i + 1);
8679 if (!nl_pat)
8680 return -ENOBUFS;
8681 pat_len = wowlan->patterns[i].pattern_len;
8682 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8683 wowlan->patterns[i].mask) ||
8684 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8685 wowlan->patterns[i].pattern) ||
8686 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8687 wowlan->patterns[i].pkt_offset))
8688 return -ENOBUFS;
8689 nla_nest_end(msg, nl_pat);
8690 }
8691 nla_nest_end(msg, nl_pats);
8692
8693 return 0;
8694 }
8695
8696 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8697 struct cfg80211_wowlan_tcp *tcp)
8698 {
8699 struct nlattr *nl_tcp;
8700
8701 if (!tcp)
8702 return 0;
8703
8704 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8705 if (!nl_tcp)
8706 return -ENOBUFS;
8707
8708 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8709 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8710 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8711 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8712 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8713 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8714 tcp->payload_len, tcp->payload) ||
8715 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8716 tcp->data_interval) ||
8717 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8718 tcp->wake_len, tcp->wake_data) ||
8719 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8720 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8721 return -ENOBUFS;
8722
8723 if (tcp->payload_seq.len &&
8724 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8725 sizeof(tcp->payload_seq), &tcp->payload_seq))
8726 return -ENOBUFS;
8727
8728 if (tcp->payload_tok.len &&
8729 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8730 sizeof(tcp->payload_tok) + tcp->tokens_size,
8731 &tcp->payload_tok))
8732 return -ENOBUFS;
8733
8734 nla_nest_end(msg, nl_tcp);
8735
8736 return 0;
8737 }
8738
8739 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8740 {
8741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8742 struct sk_buff *msg;
8743 void *hdr;
8744 u32 size = NLMSG_DEFAULT_SIZE;
8745
8746 if (!rdev->wiphy.wowlan)
8747 return -EOPNOTSUPP;
8748
8749 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8750 /* adjust size to have room for all the data */
8751 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8752 rdev->wiphy.wowlan_config->tcp->payload_len +
8753 rdev->wiphy.wowlan_config->tcp->wake_len +
8754 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8755 }
8756
8757 msg = nlmsg_new(size, GFP_KERNEL);
8758 if (!msg)
8759 return -ENOMEM;
8760
8761 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8762 NL80211_CMD_GET_WOWLAN);
8763 if (!hdr)
8764 goto nla_put_failure;
8765
8766 if (rdev->wiphy.wowlan_config) {
8767 struct nlattr *nl_wowlan;
8768
8769 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8770 if (!nl_wowlan)
8771 goto nla_put_failure;
8772
8773 if ((rdev->wiphy.wowlan_config->any &&
8774 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8775 (rdev->wiphy.wowlan_config->disconnect &&
8776 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8777 (rdev->wiphy.wowlan_config->magic_pkt &&
8778 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8779 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8780 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8781 (rdev->wiphy.wowlan_config->eap_identity_req &&
8782 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8783 (rdev->wiphy.wowlan_config->four_way_handshake &&
8784 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8785 (rdev->wiphy.wowlan_config->rfkill_release &&
8786 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8787 goto nla_put_failure;
8788
8789 if (nl80211_send_wowlan_patterns(msg, rdev))
8790 goto nla_put_failure;
8791
8792 if (nl80211_send_wowlan_tcp(msg,
8793 rdev->wiphy.wowlan_config->tcp))
8794 goto nla_put_failure;
8795
8796 nla_nest_end(msg, nl_wowlan);
8797 }
8798
8799 genlmsg_end(msg, hdr);
8800 return genlmsg_reply(msg, info);
8801
8802 nla_put_failure:
8803 nlmsg_free(msg);
8804 return -ENOBUFS;
8805 }
8806
8807 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8808 struct nlattr *attr,
8809 struct cfg80211_wowlan *trig)
8810 {
8811 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8812 struct cfg80211_wowlan_tcp *cfg;
8813 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8814 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8815 u32 size;
8816 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8817 int err, port;
8818
8819 if (!rdev->wiphy.wowlan->tcp)
8820 return -EINVAL;
8821
8822 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8823 nla_data(attr), nla_len(attr),
8824 nl80211_wowlan_tcp_policy);
8825 if (err)
8826 return err;
8827
8828 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8829 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8830 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8831 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8832 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8833 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8834 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8835 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8836 return -EINVAL;
8837
8838 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8839 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8840 return -EINVAL;
8841
8842 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8843 rdev->wiphy.wowlan->tcp->data_interval_max ||
8844 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8845 return -EINVAL;
8846
8847 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8848 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8849 return -EINVAL;
8850
8851 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8852 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8853 return -EINVAL;
8854
8855 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8856 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8857
8858 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8859 tokens_size = tokln - sizeof(*tok);
8860
8861 if (!tok->len || tokens_size % tok->len)
8862 return -EINVAL;
8863 if (!rdev->wiphy.wowlan->tcp->tok)
8864 return -EINVAL;
8865 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8866 return -EINVAL;
8867 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8868 return -EINVAL;
8869 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8870 return -EINVAL;
8871 if (tok->offset + tok->len > data_size)
8872 return -EINVAL;
8873 }
8874
8875 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8876 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8877 if (!rdev->wiphy.wowlan->tcp->seq)
8878 return -EINVAL;
8879 if (seq->len == 0 || seq->len > 4)
8880 return -EINVAL;
8881 if (seq->len + seq->offset > data_size)
8882 return -EINVAL;
8883 }
8884
8885 size = sizeof(*cfg);
8886 size += data_size;
8887 size += wake_size + wake_mask_size;
8888 size += tokens_size;
8889
8890 cfg = kzalloc(size, GFP_KERNEL);
8891 if (!cfg)
8892 return -ENOMEM;
8893 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8894 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8895 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8896 ETH_ALEN);
8897 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8898 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8899 else
8900 port = 0;
8901 #ifdef CONFIG_INET
8902 /* allocate a socket and port for it and use it */
8903 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8904 IPPROTO_TCP, &cfg->sock, 1);
8905 if (err) {
8906 kfree(cfg);
8907 return err;
8908 }
8909 if (inet_csk_get_port(cfg->sock->sk, port)) {
8910 sock_release(cfg->sock);
8911 kfree(cfg);
8912 return -EADDRINUSE;
8913 }
8914 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8915 #else
8916 if (!port) {
8917 kfree(cfg);
8918 return -EINVAL;
8919 }
8920 cfg->src_port = port;
8921 #endif
8922
8923 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8924 cfg->payload_len = data_size;
8925 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8926 memcpy((void *)cfg->payload,
8927 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8928 data_size);
8929 if (seq)
8930 cfg->payload_seq = *seq;
8931 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8932 cfg->wake_len = wake_size;
8933 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8934 memcpy((void *)cfg->wake_data,
8935 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8936 wake_size);
8937 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8938 data_size + wake_size;
8939 memcpy((void *)cfg->wake_mask,
8940 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8941 wake_mask_size);
8942 if (tok) {
8943 cfg->tokens_size = tokens_size;
8944 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8945 }
8946
8947 trig->tcp = cfg;
8948
8949 return 0;
8950 }
8951
8952 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8953 const struct wiphy_wowlan_support *wowlan,
8954 struct nlattr *attr,
8955 struct cfg80211_wowlan *trig)
8956 {
8957 struct nlattr **tb;
8958 int err;
8959
8960 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8961 if (!tb)
8962 return -ENOMEM;
8963
8964 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8965 err = -EOPNOTSUPP;
8966 goto out;
8967 }
8968
8969 err = nla_parse(tb, NL80211_ATTR_MAX,
8970 nla_data(attr), nla_len(attr),
8971 nl80211_policy);
8972 if (err)
8973 goto out;
8974
8975 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8976 err = PTR_ERR_OR_ZERO(trig->nd_config);
8977 if (err)
8978 trig->nd_config = NULL;
8979
8980 out:
8981 kfree(tb);
8982 return err;
8983 }
8984
8985 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8986 {
8987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8988 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8989 struct cfg80211_wowlan new_triggers = {};
8990 struct cfg80211_wowlan *ntrig;
8991 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8992 int err, i;
8993 bool prev_enabled = rdev->wiphy.wowlan_config;
8994
8995 if (!wowlan)
8996 return -EOPNOTSUPP;
8997
8998 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8999 cfg80211_rdev_free_wowlan(rdev);
9000 rdev->wiphy.wowlan_config = NULL;
9001 goto set_wakeup;
9002 }
9003
9004 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9005 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9006 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9007 nl80211_wowlan_policy);
9008 if (err)
9009 return err;
9010
9011 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9012 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9013 return -EINVAL;
9014 new_triggers.any = true;
9015 }
9016
9017 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9018 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9019 return -EINVAL;
9020 new_triggers.disconnect = true;
9021 }
9022
9023 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9024 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9025 return -EINVAL;
9026 new_triggers.magic_pkt = true;
9027 }
9028
9029 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9030 return -EINVAL;
9031
9032 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9033 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9034 return -EINVAL;
9035 new_triggers.gtk_rekey_failure = true;
9036 }
9037
9038 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9039 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9040 return -EINVAL;
9041 new_triggers.eap_identity_req = true;
9042 }
9043
9044 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9045 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9046 return -EINVAL;
9047 new_triggers.four_way_handshake = true;
9048 }
9049
9050 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9051 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9052 return -EINVAL;
9053 new_triggers.rfkill_release = true;
9054 }
9055
9056 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9057 struct nlattr *pat;
9058 int n_patterns = 0;
9059 int rem, pat_len, mask_len, pkt_offset;
9060 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9061
9062 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9063 rem)
9064 n_patterns++;
9065 if (n_patterns > wowlan->n_patterns)
9066 return -EINVAL;
9067
9068 new_triggers.patterns = kcalloc(n_patterns,
9069 sizeof(new_triggers.patterns[0]),
9070 GFP_KERNEL);
9071 if (!new_triggers.patterns)
9072 return -ENOMEM;
9073
9074 new_triggers.n_patterns = n_patterns;
9075 i = 0;
9076
9077 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9078 rem) {
9079 u8 *mask_pat;
9080
9081 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9082 nla_len(pat), NULL);
9083 err = -EINVAL;
9084 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9085 !pat_tb[NL80211_PKTPAT_PATTERN])
9086 goto error;
9087 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9088 mask_len = DIV_ROUND_UP(pat_len, 8);
9089 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9090 goto error;
9091 if (pat_len > wowlan->pattern_max_len ||
9092 pat_len < wowlan->pattern_min_len)
9093 goto error;
9094
9095 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9096 pkt_offset = 0;
9097 else
9098 pkt_offset = nla_get_u32(
9099 pat_tb[NL80211_PKTPAT_OFFSET]);
9100 if (pkt_offset > wowlan->max_pkt_offset)
9101 goto error;
9102 new_triggers.patterns[i].pkt_offset = pkt_offset;
9103
9104 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9105 if (!mask_pat) {
9106 err = -ENOMEM;
9107 goto error;
9108 }
9109 new_triggers.patterns[i].mask = mask_pat;
9110 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9111 mask_len);
9112 mask_pat += mask_len;
9113 new_triggers.patterns[i].pattern = mask_pat;
9114 new_triggers.patterns[i].pattern_len = pat_len;
9115 memcpy(mask_pat,
9116 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9117 pat_len);
9118 i++;
9119 }
9120 }
9121
9122 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9123 err = nl80211_parse_wowlan_tcp(
9124 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9125 &new_triggers);
9126 if (err)
9127 goto error;
9128 }
9129
9130 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9131 err = nl80211_parse_wowlan_nd(
9132 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9133 &new_triggers);
9134 if (err)
9135 goto error;
9136 }
9137
9138 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9139 if (!ntrig) {
9140 err = -ENOMEM;
9141 goto error;
9142 }
9143 cfg80211_rdev_free_wowlan(rdev);
9144 rdev->wiphy.wowlan_config = ntrig;
9145
9146 set_wakeup:
9147 if (rdev->ops->set_wakeup &&
9148 prev_enabled != !!rdev->wiphy.wowlan_config)
9149 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9150
9151 return 0;
9152 error:
9153 for (i = 0; i < new_triggers.n_patterns; i++)
9154 kfree(new_triggers.patterns[i].mask);
9155 kfree(new_triggers.patterns);
9156 if (new_triggers.tcp && new_triggers.tcp->sock)
9157 sock_release(new_triggers.tcp->sock);
9158 kfree(new_triggers.tcp);
9159 return err;
9160 }
9161 #endif
9162
9163 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9164 struct cfg80211_registered_device *rdev)
9165 {
9166 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9167 int i, j, pat_len;
9168 struct cfg80211_coalesce_rules *rule;
9169
9170 if (!rdev->coalesce->n_rules)
9171 return 0;
9172
9173 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9174 if (!nl_rules)
9175 return -ENOBUFS;
9176
9177 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9178 nl_rule = nla_nest_start(msg, i + 1);
9179 if (!nl_rule)
9180 return -ENOBUFS;
9181
9182 rule = &rdev->coalesce->rules[i];
9183 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9184 rule->delay))
9185 return -ENOBUFS;
9186
9187 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9188 rule->condition))
9189 return -ENOBUFS;
9190
9191 nl_pats = nla_nest_start(msg,
9192 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9193 if (!nl_pats)
9194 return -ENOBUFS;
9195
9196 for (j = 0; j < rule->n_patterns; j++) {
9197 nl_pat = nla_nest_start(msg, j + 1);
9198 if (!nl_pat)
9199 return -ENOBUFS;
9200 pat_len = rule->patterns[j].pattern_len;
9201 if (nla_put(msg, NL80211_PKTPAT_MASK,
9202 DIV_ROUND_UP(pat_len, 8),
9203 rule->patterns[j].mask) ||
9204 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9205 rule->patterns[j].pattern) ||
9206 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9207 rule->patterns[j].pkt_offset))
9208 return -ENOBUFS;
9209 nla_nest_end(msg, nl_pat);
9210 }
9211 nla_nest_end(msg, nl_pats);
9212 nla_nest_end(msg, nl_rule);
9213 }
9214 nla_nest_end(msg, nl_rules);
9215
9216 return 0;
9217 }
9218
9219 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9220 {
9221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9222 struct sk_buff *msg;
9223 void *hdr;
9224
9225 if (!rdev->wiphy.coalesce)
9226 return -EOPNOTSUPP;
9227
9228 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9229 if (!msg)
9230 return -ENOMEM;
9231
9232 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9233 NL80211_CMD_GET_COALESCE);
9234 if (!hdr)
9235 goto nla_put_failure;
9236
9237 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9238 goto nla_put_failure;
9239
9240 genlmsg_end(msg, hdr);
9241 return genlmsg_reply(msg, info);
9242
9243 nla_put_failure:
9244 nlmsg_free(msg);
9245 return -ENOBUFS;
9246 }
9247
9248 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9249 {
9250 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9251 int i, j;
9252 struct cfg80211_coalesce_rules *rule;
9253
9254 if (!coalesce)
9255 return;
9256
9257 for (i = 0; i < coalesce->n_rules; i++) {
9258 rule = &coalesce->rules[i];
9259 for (j = 0; j < rule->n_patterns; j++)
9260 kfree(rule->patterns[j].mask);
9261 kfree(rule->patterns);
9262 }
9263 kfree(coalesce->rules);
9264 kfree(coalesce);
9265 rdev->coalesce = NULL;
9266 }
9267
9268 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9269 struct nlattr *rule,
9270 struct cfg80211_coalesce_rules *new_rule)
9271 {
9272 int err, i;
9273 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9274 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9275 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9276 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9277
9278 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9279 nla_len(rule), nl80211_coalesce_policy);
9280 if (err)
9281 return err;
9282
9283 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9284 new_rule->delay =
9285 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9286 if (new_rule->delay > coalesce->max_delay)
9287 return -EINVAL;
9288
9289 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9290 new_rule->condition =
9291 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9292 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9293 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9294 return -EINVAL;
9295
9296 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9297 return -EINVAL;
9298
9299 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9300 rem)
9301 n_patterns++;
9302 if (n_patterns > coalesce->n_patterns)
9303 return -EINVAL;
9304
9305 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9306 GFP_KERNEL);
9307 if (!new_rule->patterns)
9308 return -ENOMEM;
9309
9310 new_rule->n_patterns = n_patterns;
9311 i = 0;
9312
9313 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9314 rem) {
9315 u8 *mask_pat;
9316
9317 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9318 nla_len(pat), NULL);
9319 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9320 !pat_tb[NL80211_PKTPAT_PATTERN])
9321 return -EINVAL;
9322 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9323 mask_len = DIV_ROUND_UP(pat_len, 8);
9324 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9325 return -EINVAL;
9326 if (pat_len > coalesce->pattern_max_len ||
9327 pat_len < coalesce->pattern_min_len)
9328 return -EINVAL;
9329
9330 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9331 pkt_offset = 0;
9332 else
9333 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9334 if (pkt_offset > coalesce->max_pkt_offset)
9335 return -EINVAL;
9336 new_rule->patterns[i].pkt_offset = pkt_offset;
9337
9338 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9339 if (!mask_pat)
9340 return -ENOMEM;
9341
9342 new_rule->patterns[i].mask = mask_pat;
9343 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9344 mask_len);
9345
9346 mask_pat += mask_len;
9347 new_rule->patterns[i].pattern = mask_pat;
9348 new_rule->patterns[i].pattern_len = pat_len;
9349 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9350 pat_len);
9351 i++;
9352 }
9353
9354 return 0;
9355 }
9356
9357 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9358 {
9359 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9360 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9361 struct cfg80211_coalesce new_coalesce = {};
9362 struct cfg80211_coalesce *n_coalesce;
9363 int err, rem_rule, n_rules = 0, i, j;
9364 struct nlattr *rule;
9365 struct cfg80211_coalesce_rules *tmp_rule;
9366
9367 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9368 return -EOPNOTSUPP;
9369
9370 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9371 cfg80211_rdev_free_coalesce(rdev);
9372 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9373 return 0;
9374 }
9375
9376 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9377 rem_rule)
9378 n_rules++;
9379 if (n_rules > coalesce->n_rules)
9380 return -EINVAL;
9381
9382 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9383 GFP_KERNEL);
9384 if (!new_coalesce.rules)
9385 return -ENOMEM;
9386
9387 new_coalesce.n_rules = n_rules;
9388 i = 0;
9389
9390 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9391 rem_rule) {
9392 err = nl80211_parse_coalesce_rule(rdev, rule,
9393 &new_coalesce.rules[i]);
9394 if (err)
9395 goto error;
9396
9397 i++;
9398 }
9399
9400 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9401 if (err)
9402 goto error;
9403
9404 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9405 if (!n_coalesce) {
9406 err = -ENOMEM;
9407 goto error;
9408 }
9409 cfg80211_rdev_free_coalesce(rdev);
9410 rdev->coalesce = n_coalesce;
9411
9412 return 0;
9413 error:
9414 for (i = 0; i < new_coalesce.n_rules; i++) {
9415 tmp_rule = &new_coalesce.rules[i];
9416 for (j = 0; j < tmp_rule->n_patterns; j++)
9417 kfree(tmp_rule->patterns[j].mask);
9418 kfree(tmp_rule->patterns);
9419 }
9420 kfree(new_coalesce.rules);
9421
9422 return err;
9423 }
9424
9425 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9426 {
9427 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9428 struct net_device *dev = info->user_ptr[1];
9429 struct wireless_dev *wdev = dev->ieee80211_ptr;
9430 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9431 struct cfg80211_gtk_rekey_data rekey_data;
9432 int err;
9433
9434 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9435 return -EINVAL;
9436
9437 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9438 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9439 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9440 nl80211_rekey_policy);
9441 if (err)
9442 return err;
9443
9444 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9445 return -ERANGE;
9446 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9447 return -ERANGE;
9448 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9449 return -ERANGE;
9450
9451 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9452 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9453 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9454
9455 wdev_lock(wdev);
9456 if (!wdev->current_bss) {
9457 err = -ENOTCONN;
9458 goto out;
9459 }
9460
9461 if (!rdev->ops->set_rekey_data) {
9462 err = -EOPNOTSUPP;
9463 goto out;
9464 }
9465
9466 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9467 out:
9468 wdev_unlock(wdev);
9469 return err;
9470 }
9471
9472 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9473 struct genl_info *info)
9474 {
9475 struct net_device *dev = info->user_ptr[1];
9476 struct wireless_dev *wdev = dev->ieee80211_ptr;
9477
9478 if (wdev->iftype != NL80211_IFTYPE_AP &&
9479 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9480 return -EINVAL;
9481
9482 if (wdev->ap_unexpected_nlportid)
9483 return -EBUSY;
9484
9485 wdev->ap_unexpected_nlportid = info->snd_portid;
9486 return 0;
9487 }
9488
9489 static int nl80211_probe_client(struct sk_buff *skb,
9490 struct genl_info *info)
9491 {
9492 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9493 struct net_device *dev = info->user_ptr[1];
9494 struct wireless_dev *wdev = dev->ieee80211_ptr;
9495 struct sk_buff *msg;
9496 void *hdr;
9497 const u8 *addr;
9498 u64 cookie;
9499 int err;
9500
9501 if (wdev->iftype != NL80211_IFTYPE_AP &&
9502 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9503 return -EOPNOTSUPP;
9504
9505 if (!info->attrs[NL80211_ATTR_MAC])
9506 return -EINVAL;
9507
9508 if (!rdev->ops->probe_client)
9509 return -EOPNOTSUPP;
9510
9511 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9512 if (!msg)
9513 return -ENOMEM;
9514
9515 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9516 NL80211_CMD_PROBE_CLIENT);
9517 if (!hdr) {
9518 err = -ENOBUFS;
9519 goto free_msg;
9520 }
9521
9522 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9523
9524 err = rdev_probe_client(rdev, dev, addr, &cookie);
9525 if (err)
9526 goto free_msg;
9527
9528 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9529 goto nla_put_failure;
9530
9531 genlmsg_end(msg, hdr);
9532
9533 return genlmsg_reply(msg, info);
9534
9535 nla_put_failure:
9536 err = -ENOBUFS;
9537 free_msg:
9538 nlmsg_free(msg);
9539 return err;
9540 }
9541
9542 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9543 {
9544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9545 struct cfg80211_beacon_registration *reg, *nreg;
9546 int rv;
9547
9548 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9549 return -EOPNOTSUPP;
9550
9551 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9552 if (!nreg)
9553 return -ENOMEM;
9554
9555 /* First, check if already registered. */
9556 spin_lock_bh(&rdev->beacon_registrations_lock);
9557 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9558 if (reg->nlportid == info->snd_portid) {
9559 rv = -EALREADY;
9560 goto out_err;
9561 }
9562 }
9563 /* Add it to the list */
9564 nreg->nlportid = info->snd_portid;
9565 list_add(&nreg->list, &rdev->beacon_registrations);
9566
9567 spin_unlock_bh(&rdev->beacon_registrations_lock);
9568
9569 return 0;
9570 out_err:
9571 spin_unlock_bh(&rdev->beacon_registrations_lock);
9572 kfree(nreg);
9573 return rv;
9574 }
9575
9576 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9577 {
9578 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9579 struct wireless_dev *wdev = info->user_ptr[1];
9580 int err;
9581
9582 if (!rdev->ops->start_p2p_device)
9583 return -EOPNOTSUPP;
9584
9585 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9586 return -EOPNOTSUPP;
9587
9588 if (wdev->p2p_started)
9589 return 0;
9590
9591 if (rfkill_blocked(rdev->rfkill))
9592 return -ERFKILL;
9593
9594 err = rdev_start_p2p_device(rdev, wdev);
9595 if (err)
9596 return err;
9597
9598 wdev->p2p_started = true;
9599 rdev->opencount++;
9600
9601 return 0;
9602 }
9603
9604 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9605 {
9606 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9607 struct wireless_dev *wdev = info->user_ptr[1];
9608
9609 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9610 return -EOPNOTSUPP;
9611
9612 if (!rdev->ops->stop_p2p_device)
9613 return -EOPNOTSUPP;
9614
9615 cfg80211_stop_p2p_device(rdev, wdev);
9616
9617 return 0;
9618 }
9619
9620 static int nl80211_get_protocol_features(struct sk_buff *skb,
9621 struct genl_info *info)
9622 {
9623 void *hdr;
9624 struct sk_buff *msg;
9625
9626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9627 if (!msg)
9628 return -ENOMEM;
9629
9630 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9631 NL80211_CMD_GET_PROTOCOL_FEATURES);
9632 if (!hdr)
9633 goto nla_put_failure;
9634
9635 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9636 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9637 goto nla_put_failure;
9638
9639 genlmsg_end(msg, hdr);
9640 return genlmsg_reply(msg, info);
9641
9642 nla_put_failure:
9643 kfree_skb(msg);
9644 return -ENOBUFS;
9645 }
9646
9647 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9648 {
9649 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9650 struct cfg80211_update_ft_ies_params ft_params;
9651 struct net_device *dev = info->user_ptr[1];
9652
9653 if (!rdev->ops->update_ft_ies)
9654 return -EOPNOTSUPP;
9655
9656 if (!info->attrs[NL80211_ATTR_MDID] ||
9657 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9658 return -EINVAL;
9659
9660 memset(&ft_params, 0, sizeof(ft_params));
9661 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9662 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9663 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9664
9665 return rdev_update_ft_ies(rdev, dev, &ft_params);
9666 }
9667
9668 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9669 struct genl_info *info)
9670 {
9671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9672 struct wireless_dev *wdev = info->user_ptr[1];
9673 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9674 u16 duration;
9675 int ret;
9676
9677 if (!rdev->ops->crit_proto_start)
9678 return -EOPNOTSUPP;
9679
9680 if (WARN_ON(!rdev->ops->crit_proto_stop))
9681 return -EINVAL;
9682
9683 if (rdev->crit_proto_nlportid)
9684 return -EBUSY;
9685
9686 /* determine protocol if provided */
9687 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9688 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9689
9690 if (proto >= NUM_NL80211_CRIT_PROTO)
9691 return -EINVAL;
9692
9693 /* timeout must be provided */
9694 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9695 return -EINVAL;
9696
9697 duration =
9698 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9699
9700 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9701 return -ERANGE;
9702
9703 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9704 if (!ret)
9705 rdev->crit_proto_nlportid = info->snd_portid;
9706
9707 return ret;
9708 }
9709
9710 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9711 struct genl_info *info)
9712 {
9713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9714 struct wireless_dev *wdev = info->user_ptr[1];
9715
9716 if (!rdev->ops->crit_proto_stop)
9717 return -EOPNOTSUPP;
9718
9719 if (rdev->crit_proto_nlportid) {
9720 rdev->crit_proto_nlportid = 0;
9721 rdev_crit_proto_stop(rdev, wdev);
9722 }
9723 return 0;
9724 }
9725
9726 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9727 {
9728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9729 struct wireless_dev *wdev =
9730 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9731 int i, err;
9732 u32 vid, subcmd;
9733
9734 if (!rdev->wiphy.vendor_commands)
9735 return -EOPNOTSUPP;
9736
9737 if (IS_ERR(wdev)) {
9738 err = PTR_ERR(wdev);
9739 if (err != -EINVAL)
9740 return err;
9741 wdev = NULL;
9742 } else if (wdev->wiphy != &rdev->wiphy) {
9743 return -EINVAL;
9744 }
9745
9746 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9747 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9748 return -EINVAL;
9749
9750 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9751 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9752 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9753 const struct wiphy_vendor_command *vcmd;
9754 void *data = NULL;
9755 int len = 0;
9756
9757 vcmd = &rdev->wiphy.vendor_commands[i];
9758
9759 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9760 continue;
9761
9762 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9763 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9764 if (!wdev)
9765 return -EINVAL;
9766 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9767 !wdev->netdev)
9768 return -EINVAL;
9769
9770 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9771 if (wdev->netdev &&
9772 !netif_running(wdev->netdev))
9773 return -ENETDOWN;
9774 if (!wdev->netdev && !wdev->p2p_started)
9775 return -ENETDOWN;
9776 }
9777 } else {
9778 wdev = NULL;
9779 }
9780
9781 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9782 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9783 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9784 }
9785
9786 rdev->cur_cmd_info = info;
9787 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9788 data, len);
9789 rdev->cur_cmd_info = NULL;
9790 return err;
9791 }
9792
9793 return -EOPNOTSUPP;
9794 }
9795
9796 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9797 enum nl80211_commands cmd,
9798 enum nl80211_attrs attr,
9799 int approxlen)
9800 {
9801 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9802
9803 if (WARN_ON(!rdev->cur_cmd_info))
9804 return NULL;
9805
9806 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9807 rdev->cur_cmd_info->snd_portid,
9808 rdev->cur_cmd_info->snd_seq,
9809 cmd, attr, NULL, GFP_KERNEL);
9810 }
9811 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9812
9813 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9814 {
9815 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9816 void *hdr = ((void **)skb->cb)[1];
9817 struct nlattr *data = ((void **)skb->cb)[2];
9818
9819 /* clear CB data for netlink core to own from now on */
9820 memset(skb->cb, 0, sizeof(skb->cb));
9821
9822 if (WARN_ON(!rdev->cur_cmd_info)) {
9823 kfree_skb(skb);
9824 return -EINVAL;
9825 }
9826
9827 nla_nest_end(skb, data);
9828 genlmsg_end(skb, hdr);
9829 return genlmsg_reply(skb, rdev->cur_cmd_info);
9830 }
9831 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9832
9833
9834 static int nl80211_set_qos_map(struct sk_buff *skb,
9835 struct genl_info *info)
9836 {
9837 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9838 struct cfg80211_qos_map *qos_map = NULL;
9839 struct net_device *dev = info->user_ptr[1];
9840 u8 *pos, len, num_des, des_len, des;
9841 int ret;
9842
9843 if (!rdev->ops->set_qos_map)
9844 return -EOPNOTSUPP;
9845
9846 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9847 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9848 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9849
9850 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9851 len > IEEE80211_QOS_MAP_LEN_MAX)
9852 return -EINVAL;
9853
9854 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9855 if (!qos_map)
9856 return -ENOMEM;
9857
9858 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9859 if (num_des) {
9860 des_len = num_des *
9861 sizeof(struct cfg80211_dscp_exception);
9862 memcpy(qos_map->dscp_exception, pos, des_len);
9863 qos_map->num_des = num_des;
9864 for (des = 0; des < num_des; des++) {
9865 if (qos_map->dscp_exception[des].up > 7) {
9866 kfree(qos_map);
9867 return -EINVAL;
9868 }
9869 }
9870 pos += des_len;
9871 }
9872 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9873 }
9874
9875 wdev_lock(dev->ieee80211_ptr);
9876 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9877 if (!ret)
9878 ret = rdev_set_qos_map(rdev, dev, qos_map);
9879 wdev_unlock(dev->ieee80211_ptr);
9880
9881 kfree(qos_map);
9882 return ret;
9883 }
9884
9885 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9886 {
9887 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9888 struct net_device *dev = info->user_ptr[1];
9889 struct wireless_dev *wdev = dev->ieee80211_ptr;
9890 const u8 *peer;
9891 u8 tsid, up;
9892 u16 admitted_time = 0;
9893 int err;
9894
9895 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9896 return -EOPNOTSUPP;
9897
9898 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9899 !info->attrs[NL80211_ATTR_USER_PRIO])
9900 return -EINVAL;
9901
9902 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9903 if (tsid >= IEEE80211_NUM_TIDS)
9904 return -EINVAL;
9905
9906 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9907 if (up >= IEEE80211_NUM_UPS)
9908 return -EINVAL;
9909
9910 /* WMM uses TIDs 0-7 even for TSPEC */
9911 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9912 /* TODO: handle 802.11 TSPEC/admission control
9913 * need more attributes for that (e.g. BA session requirement);
9914 * change the WMM adminssion test above to allow both then
9915 */
9916 return -EINVAL;
9917 }
9918
9919 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9920
9921 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9922 admitted_time =
9923 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9924 if (!admitted_time)
9925 return -EINVAL;
9926 }
9927
9928 wdev_lock(wdev);
9929 switch (wdev->iftype) {
9930 case NL80211_IFTYPE_STATION:
9931 case NL80211_IFTYPE_P2P_CLIENT:
9932 if (wdev->current_bss)
9933 break;
9934 err = -ENOTCONN;
9935 goto out;
9936 default:
9937 err = -EOPNOTSUPP;
9938 goto out;
9939 }
9940
9941 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9942
9943 out:
9944 wdev_unlock(wdev);
9945 return err;
9946 }
9947
9948 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9949 {
9950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9951 struct net_device *dev = info->user_ptr[1];
9952 struct wireless_dev *wdev = dev->ieee80211_ptr;
9953 const u8 *peer;
9954 u8 tsid;
9955 int err;
9956
9957 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9958 return -EINVAL;
9959
9960 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9961 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9962
9963 wdev_lock(wdev);
9964 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9965 wdev_unlock(wdev);
9966
9967 return err;
9968 }
9969
9970 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9971 struct genl_info *info)
9972 {
9973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9974 struct net_device *dev = info->user_ptr[1];
9975 struct wireless_dev *wdev = dev->ieee80211_ptr;
9976 struct cfg80211_chan_def chandef = {};
9977 const u8 *addr;
9978 u8 oper_class;
9979 int err;
9980
9981 if (!rdev->ops->tdls_channel_switch ||
9982 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9983 return -EOPNOTSUPP;
9984
9985 switch (dev->ieee80211_ptr->iftype) {
9986 case NL80211_IFTYPE_STATION:
9987 case NL80211_IFTYPE_P2P_CLIENT:
9988 break;
9989 default:
9990 return -EOPNOTSUPP;
9991 }
9992
9993 if (!info->attrs[NL80211_ATTR_MAC] ||
9994 !info->attrs[NL80211_ATTR_OPER_CLASS])
9995 return -EINVAL;
9996
9997 err = nl80211_parse_chandef(rdev, info, &chandef);
9998 if (err)
9999 return err;
10000
10001 /*
10002 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10003 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10004 * specification is not defined for them.
10005 */
10006 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10007 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10008 chandef.width != NL80211_CHAN_WIDTH_20)
10009 return -EINVAL;
10010
10011 /* we will be active on the TDLS link */
10012 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10013 return -EINVAL;
10014
10015 /* don't allow switching to DFS channels */
10016 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10017 return -EINVAL;
10018
10019 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10020 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10021
10022 wdev_lock(wdev);
10023 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10024 wdev_unlock(wdev);
10025
10026 return err;
10027 }
10028
10029 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10030 struct genl_info *info)
10031 {
10032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10033 struct net_device *dev = info->user_ptr[1];
10034 struct wireless_dev *wdev = dev->ieee80211_ptr;
10035 const u8 *addr;
10036
10037 if (!rdev->ops->tdls_channel_switch ||
10038 !rdev->ops->tdls_cancel_channel_switch ||
10039 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10040 return -EOPNOTSUPP;
10041
10042 switch (dev->ieee80211_ptr->iftype) {
10043 case NL80211_IFTYPE_STATION:
10044 case NL80211_IFTYPE_P2P_CLIENT:
10045 break;
10046 default:
10047 return -EOPNOTSUPP;
10048 }
10049
10050 if (!info->attrs[NL80211_ATTR_MAC])
10051 return -EINVAL;
10052
10053 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10054
10055 wdev_lock(wdev);
10056 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10057 wdev_unlock(wdev);
10058
10059 return 0;
10060 }
10061
10062 #define NL80211_FLAG_NEED_WIPHY 0x01
10063 #define NL80211_FLAG_NEED_NETDEV 0x02
10064 #define NL80211_FLAG_NEED_RTNL 0x04
10065 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10066 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10067 NL80211_FLAG_CHECK_NETDEV_UP)
10068 #define NL80211_FLAG_NEED_WDEV 0x10
10069 /* If a netdev is associated, it must be UP, P2P must be started */
10070 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10071 NL80211_FLAG_CHECK_NETDEV_UP)
10072 #define NL80211_FLAG_CLEAR_SKB 0x20
10073
10074 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10075 struct genl_info *info)
10076 {
10077 struct cfg80211_registered_device *rdev;
10078 struct wireless_dev *wdev;
10079 struct net_device *dev;
10080 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10081
10082 if (rtnl)
10083 rtnl_lock();
10084
10085 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10086 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10087 if (IS_ERR(rdev)) {
10088 if (rtnl)
10089 rtnl_unlock();
10090 return PTR_ERR(rdev);
10091 }
10092 info->user_ptr[0] = rdev;
10093 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10094 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10095 ASSERT_RTNL();
10096
10097 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10098 info->attrs);
10099 if (IS_ERR(wdev)) {
10100 if (rtnl)
10101 rtnl_unlock();
10102 return PTR_ERR(wdev);
10103 }
10104
10105 dev = wdev->netdev;
10106 rdev = wiphy_to_rdev(wdev->wiphy);
10107
10108 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10109 if (!dev) {
10110 if (rtnl)
10111 rtnl_unlock();
10112 return -EINVAL;
10113 }
10114
10115 info->user_ptr[1] = dev;
10116 } else {
10117 info->user_ptr[1] = wdev;
10118 }
10119
10120 if (dev) {
10121 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10122 !netif_running(dev)) {
10123 if (rtnl)
10124 rtnl_unlock();
10125 return -ENETDOWN;
10126 }
10127
10128 dev_hold(dev);
10129 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10130 if (!wdev->p2p_started) {
10131 if (rtnl)
10132 rtnl_unlock();
10133 return -ENETDOWN;
10134 }
10135 }
10136
10137 info->user_ptr[0] = rdev;
10138 }
10139
10140 return 0;
10141 }
10142
10143 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10144 struct genl_info *info)
10145 {
10146 if (info->user_ptr[1]) {
10147 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10148 struct wireless_dev *wdev = info->user_ptr[1];
10149
10150 if (wdev->netdev)
10151 dev_put(wdev->netdev);
10152 } else {
10153 dev_put(info->user_ptr[1]);
10154 }
10155 }
10156
10157 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10158 rtnl_unlock();
10159
10160 /* If needed, clear the netlink message payload from the SKB
10161 * as it might contain key data that shouldn't stick around on
10162 * the heap after the SKB is freed. The netlink message header
10163 * is still needed for further processing, so leave it intact.
10164 */
10165 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10166 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10167
10168 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10169 }
10170 }
10171
10172 static const struct genl_ops nl80211_ops[] = {
10173 {
10174 .cmd = NL80211_CMD_GET_WIPHY,
10175 .doit = nl80211_get_wiphy,
10176 .dumpit = nl80211_dump_wiphy,
10177 .done = nl80211_dump_wiphy_done,
10178 .policy = nl80211_policy,
10179 /* can be retrieved by unprivileged users */
10180 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10181 NL80211_FLAG_NEED_RTNL,
10182 },
10183 {
10184 .cmd = NL80211_CMD_SET_WIPHY,
10185 .doit = nl80211_set_wiphy,
10186 .policy = nl80211_policy,
10187 .flags = GENL_ADMIN_PERM,
10188 .internal_flags = NL80211_FLAG_NEED_RTNL,
10189 },
10190 {
10191 .cmd = NL80211_CMD_GET_INTERFACE,
10192 .doit = nl80211_get_interface,
10193 .dumpit = nl80211_dump_interface,
10194 .policy = nl80211_policy,
10195 /* can be retrieved by unprivileged users */
10196 .internal_flags = NL80211_FLAG_NEED_WDEV |
10197 NL80211_FLAG_NEED_RTNL,
10198 },
10199 {
10200 .cmd = NL80211_CMD_SET_INTERFACE,
10201 .doit = nl80211_set_interface,
10202 .policy = nl80211_policy,
10203 .flags = GENL_ADMIN_PERM,
10204 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10205 NL80211_FLAG_NEED_RTNL,
10206 },
10207 {
10208 .cmd = NL80211_CMD_NEW_INTERFACE,
10209 .doit = nl80211_new_interface,
10210 .policy = nl80211_policy,
10211 .flags = GENL_ADMIN_PERM,
10212 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10213 NL80211_FLAG_NEED_RTNL,
10214 },
10215 {
10216 .cmd = NL80211_CMD_DEL_INTERFACE,
10217 .doit = nl80211_del_interface,
10218 .policy = nl80211_policy,
10219 .flags = GENL_ADMIN_PERM,
10220 .internal_flags = NL80211_FLAG_NEED_WDEV |
10221 NL80211_FLAG_NEED_RTNL,
10222 },
10223 {
10224 .cmd = NL80211_CMD_GET_KEY,
10225 .doit = nl80211_get_key,
10226 .policy = nl80211_policy,
10227 .flags = GENL_ADMIN_PERM,
10228 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10229 NL80211_FLAG_NEED_RTNL,
10230 },
10231 {
10232 .cmd = NL80211_CMD_SET_KEY,
10233 .doit = nl80211_set_key,
10234 .policy = nl80211_policy,
10235 .flags = GENL_ADMIN_PERM,
10236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10237 NL80211_FLAG_NEED_RTNL |
10238 NL80211_FLAG_CLEAR_SKB,
10239 },
10240 {
10241 .cmd = NL80211_CMD_NEW_KEY,
10242 .doit = nl80211_new_key,
10243 .policy = nl80211_policy,
10244 .flags = GENL_ADMIN_PERM,
10245 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10246 NL80211_FLAG_NEED_RTNL |
10247 NL80211_FLAG_CLEAR_SKB,
10248 },
10249 {
10250 .cmd = NL80211_CMD_DEL_KEY,
10251 .doit = nl80211_del_key,
10252 .policy = nl80211_policy,
10253 .flags = GENL_ADMIN_PERM,
10254 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10255 NL80211_FLAG_NEED_RTNL,
10256 },
10257 {
10258 .cmd = NL80211_CMD_SET_BEACON,
10259 .policy = nl80211_policy,
10260 .flags = GENL_ADMIN_PERM,
10261 .doit = nl80211_set_beacon,
10262 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10263 NL80211_FLAG_NEED_RTNL,
10264 },
10265 {
10266 .cmd = NL80211_CMD_START_AP,
10267 .policy = nl80211_policy,
10268 .flags = GENL_ADMIN_PERM,
10269 .doit = nl80211_start_ap,
10270 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10271 NL80211_FLAG_NEED_RTNL,
10272 },
10273 {
10274 .cmd = NL80211_CMD_STOP_AP,
10275 .policy = nl80211_policy,
10276 .flags = GENL_ADMIN_PERM,
10277 .doit = nl80211_stop_ap,
10278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10279 NL80211_FLAG_NEED_RTNL,
10280 },
10281 {
10282 .cmd = NL80211_CMD_GET_STATION,
10283 .doit = nl80211_get_station,
10284 .dumpit = nl80211_dump_station,
10285 .policy = nl80211_policy,
10286 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10287 NL80211_FLAG_NEED_RTNL,
10288 },
10289 {
10290 .cmd = NL80211_CMD_SET_STATION,
10291 .doit = nl80211_set_station,
10292 .policy = nl80211_policy,
10293 .flags = GENL_ADMIN_PERM,
10294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10295 NL80211_FLAG_NEED_RTNL,
10296 },
10297 {
10298 .cmd = NL80211_CMD_NEW_STATION,
10299 .doit = nl80211_new_station,
10300 .policy = nl80211_policy,
10301 .flags = GENL_ADMIN_PERM,
10302 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10303 NL80211_FLAG_NEED_RTNL,
10304 },
10305 {
10306 .cmd = NL80211_CMD_DEL_STATION,
10307 .doit = nl80211_del_station,
10308 .policy = nl80211_policy,
10309 .flags = GENL_ADMIN_PERM,
10310 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10311 NL80211_FLAG_NEED_RTNL,
10312 },
10313 {
10314 .cmd = NL80211_CMD_GET_MPATH,
10315 .doit = nl80211_get_mpath,
10316 .dumpit = nl80211_dump_mpath,
10317 .policy = nl80211_policy,
10318 .flags = GENL_ADMIN_PERM,
10319 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10320 NL80211_FLAG_NEED_RTNL,
10321 },
10322 {
10323 .cmd = NL80211_CMD_GET_MPP,
10324 .doit = nl80211_get_mpp,
10325 .dumpit = nl80211_dump_mpp,
10326 .policy = nl80211_policy,
10327 .flags = GENL_ADMIN_PERM,
10328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329 NL80211_FLAG_NEED_RTNL,
10330 },
10331 {
10332 .cmd = NL80211_CMD_SET_MPATH,
10333 .doit = nl80211_set_mpath,
10334 .policy = nl80211_policy,
10335 .flags = GENL_ADMIN_PERM,
10336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10337 NL80211_FLAG_NEED_RTNL,
10338 },
10339 {
10340 .cmd = NL80211_CMD_NEW_MPATH,
10341 .doit = nl80211_new_mpath,
10342 .policy = nl80211_policy,
10343 .flags = GENL_ADMIN_PERM,
10344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10345 NL80211_FLAG_NEED_RTNL,
10346 },
10347 {
10348 .cmd = NL80211_CMD_DEL_MPATH,
10349 .doit = nl80211_del_mpath,
10350 .policy = nl80211_policy,
10351 .flags = GENL_ADMIN_PERM,
10352 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10353 NL80211_FLAG_NEED_RTNL,
10354 },
10355 {
10356 .cmd = NL80211_CMD_SET_BSS,
10357 .doit = nl80211_set_bss,
10358 .policy = nl80211_policy,
10359 .flags = GENL_ADMIN_PERM,
10360 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10361 NL80211_FLAG_NEED_RTNL,
10362 },
10363 {
10364 .cmd = NL80211_CMD_GET_REG,
10365 .doit = nl80211_get_reg_do,
10366 .dumpit = nl80211_get_reg_dump,
10367 .policy = nl80211_policy,
10368 .internal_flags = NL80211_FLAG_NEED_RTNL,
10369 /* can be retrieved by unprivileged users */
10370 },
10371 {
10372 .cmd = NL80211_CMD_SET_REG,
10373 .doit = nl80211_set_reg,
10374 .policy = nl80211_policy,
10375 .flags = GENL_ADMIN_PERM,
10376 .internal_flags = NL80211_FLAG_NEED_RTNL,
10377 },
10378 {
10379 .cmd = NL80211_CMD_REQ_SET_REG,
10380 .doit = nl80211_req_set_reg,
10381 .policy = nl80211_policy,
10382 .flags = GENL_ADMIN_PERM,
10383 },
10384 {
10385 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10386 .doit = nl80211_get_mesh_config,
10387 .policy = nl80211_policy,
10388 /* can be retrieved by unprivileged users */
10389 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10390 NL80211_FLAG_NEED_RTNL,
10391 },
10392 {
10393 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10394 .doit = nl80211_update_mesh_config,
10395 .policy = nl80211_policy,
10396 .flags = GENL_ADMIN_PERM,
10397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10398 NL80211_FLAG_NEED_RTNL,
10399 },
10400 {
10401 .cmd = NL80211_CMD_TRIGGER_SCAN,
10402 .doit = nl80211_trigger_scan,
10403 .policy = nl80211_policy,
10404 .flags = GENL_ADMIN_PERM,
10405 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10406 NL80211_FLAG_NEED_RTNL,
10407 },
10408 {
10409 .cmd = NL80211_CMD_GET_SCAN,
10410 .policy = nl80211_policy,
10411 .dumpit = nl80211_dump_scan,
10412 },
10413 {
10414 .cmd = NL80211_CMD_START_SCHED_SCAN,
10415 .doit = nl80211_start_sched_scan,
10416 .policy = nl80211_policy,
10417 .flags = GENL_ADMIN_PERM,
10418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10419 NL80211_FLAG_NEED_RTNL,
10420 },
10421 {
10422 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10423 .doit = nl80211_stop_sched_scan,
10424 .policy = nl80211_policy,
10425 .flags = GENL_ADMIN_PERM,
10426 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10427 NL80211_FLAG_NEED_RTNL,
10428 },
10429 {
10430 .cmd = NL80211_CMD_AUTHENTICATE,
10431 .doit = nl80211_authenticate,
10432 .policy = nl80211_policy,
10433 .flags = GENL_ADMIN_PERM,
10434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10435 NL80211_FLAG_NEED_RTNL |
10436 NL80211_FLAG_CLEAR_SKB,
10437 },
10438 {
10439 .cmd = NL80211_CMD_ASSOCIATE,
10440 .doit = nl80211_associate,
10441 .policy = nl80211_policy,
10442 .flags = GENL_ADMIN_PERM,
10443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444 NL80211_FLAG_NEED_RTNL,
10445 },
10446 {
10447 .cmd = NL80211_CMD_DEAUTHENTICATE,
10448 .doit = nl80211_deauthenticate,
10449 .policy = nl80211_policy,
10450 .flags = GENL_ADMIN_PERM,
10451 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10452 NL80211_FLAG_NEED_RTNL,
10453 },
10454 {
10455 .cmd = NL80211_CMD_DISASSOCIATE,
10456 .doit = nl80211_disassociate,
10457 .policy = nl80211_policy,
10458 .flags = GENL_ADMIN_PERM,
10459 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10460 NL80211_FLAG_NEED_RTNL,
10461 },
10462 {
10463 .cmd = NL80211_CMD_JOIN_IBSS,
10464 .doit = nl80211_join_ibss,
10465 .policy = nl80211_policy,
10466 .flags = GENL_ADMIN_PERM,
10467 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10468 NL80211_FLAG_NEED_RTNL,
10469 },
10470 {
10471 .cmd = NL80211_CMD_LEAVE_IBSS,
10472 .doit = nl80211_leave_ibss,
10473 .policy = nl80211_policy,
10474 .flags = GENL_ADMIN_PERM,
10475 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10476 NL80211_FLAG_NEED_RTNL,
10477 },
10478 #ifdef CONFIG_NL80211_TESTMODE
10479 {
10480 .cmd = NL80211_CMD_TESTMODE,
10481 .doit = nl80211_testmode_do,
10482 .dumpit = nl80211_testmode_dump,
10483 .policy = nl80211_policy,
10484 .flags = GENL_ADMIN_PERM,
10485 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10486 NL80211_FLAG_NEED_RTNL,
10487 },
10488 #endif
10489 {
10490 .cmd = NL80211_CMD_CONNECT,
10491 .doit = nl80211_connect,
10492 .policy = nl80211_policy,
10493 .flags = GENL_ADMIN_PERM,
10494 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10495 NL80211_FLAG_NEED_RTNL,
10496 },
10497 {
10498 .cmd = NL80211_CMD_DISCONNECT,
10499 .doit = nl80211_disconnect,
10500 .policy = nl80211_policy,
10501 .flags = GENL_ADMIN_PERM,
10502 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10503 NL80211_FLAG_NEED_RTNL,
10504 },
10505 {
10506 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10507 .doit = nl80211_wiphy_netns,
10508 .policy = nl80211_policy,
10509 .flags = GENL_ADMIN_PERM,
10510 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10511 NL80211_FLAG_NEED_RTNL,
10512 },
10513 {
10514 .cmd = NL80211_CMD_GET_SURVEY,
10515 .policy = nl80211_policy,
10516 .dumpit = nl80211_dump_survey,
10517 },
10518 {
10519 .cmd = NL80211_CMD_SET_PMKSA,
10520 .doit = nl80211_setdel_pmksa,
10521 .policy = nl80211_policy,
10522 .flags = GENL_ADMIN_PERM,
10523 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10524 NL80211_FLAG_NEED_RTNL,
10525 },
10526 {
10527 .cmd = NL80211_CMD_DEL_PMKSA,
10528 .doit = nl80211_setdel_pmksa,
10529 .policy = nl80211_policy,
10530 .flags = GENL_ADMIN_PERM,
10531 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10532 NL80211_FLAG_NEED_RTNL,
10533 },
10534 {
10535 .cmd = NL80211_CMD_FLUSH_PMKSA,
10536 .doit = nl80211_flush_pmksa,
10537 .policy = nl80211_policy,
10538 .flags = GENL_ADMIN_PERM,
10539 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10540 NL80211_FLAG_NEED_RTNL,
10541 },
10542 {
10543 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10544 .doit = nl80211_remain_on_channel,
10545 .policy = nl80211_policy,
10546 .flags = GENL_ADMIN_PERM,
10547 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10548 NL80211_FLAG_NEED_RTNL,
10549 },
10550 {
10551 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10552 .doit = nl80211_cancel_remain_on_channel,
10553 .policy = nl80211_policy,
10554 .flags = GENL_ADMIN_PERM,
10555 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10556 NL80211_FLAG_NEED_RTNL,
10557 },
10558 {
10559 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10560 .doit = nl80211_set_tx_bitrate_mask,
10561 .policy = nl80211_policy,
10562 .flags = GENL_ADMIN_PERM,
10563 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10564 NL80211_FLAG_NEED_RTNL,
10565 },
10566 {
10567 .cmd = NL80211_CMD_REGISTER_FRAME,
10568 .doit = nl80211_register_mgmt,
10569 .policy = nl80211_policy,
10570 .flags = GENL_ADMIN_PERM,
10571 .internal_flags = NL80211_FLAG_NEED_WDEV |
10572 NL80211_FLAG_NEED_RTNL,
10573 },
10574 {
10575 .cmd = NL80211_CMD_FRAME,
10576 .doit = nl80211_tx_mgmt,
10577 .policy = nl80211_policy,
10578 .flags = GENL_ADMIN_PERM,
10579 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10580 NL80211_FLAG_NEED_RTNL,
10581 },
10582 {
10583 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10584 .doit = nl80211_tx_mgmt_cancel_wait,
10585 .policy = nl80211_policy,
10586 .flags = GENL_ADMIN_PERM,
10587 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10588 NL80211_FLAG_NEED_RTNL,
10589 },
10590 {
10591 .cmd = NL80211_CMD_SET_POWER_SAVE,
10592 .doit = nl80211_set_power_save,
10593 .policy = nl80211_policy,
10594 .flags = GENL_ADMIN_PERM,
10595 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10596 NL80211_FLAG_NEED_RTNL,
10597 },
10598 {
10599 .cmd = NL80211_CMD_GET_POWER_SAVE,
10600 .doit = nl80211_get_power_save,
10601 .policy = nl80211_policy,
10602 /* can be retrieved by unprivileged users */
10603 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10604 NL80211_FLAG_NEED_RTNL,
10605 },
10606 {
10607 .cmd = NL80211_CMD_SET_CQM,
10608 .doit = nl80211_set_cqm,
10609 .policy = nl80211_policy,
10610 .flags = GENL_ADMIN_PERM,
10611 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10612 NL80211_FLAG_NEED_RTNL,
10613 },
10614 {
10615 .cmd = NL80211_CMD_SET_CHANNEL,
10616 .doit = nl80211_set_channel,
10617 .policy = nl80211_policy,
10618 .flags = GENL_ADMIN_PERM,
10619 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10620 NL80211_FLAG_NEED_RTNL,
10621 },
10622 {
10623 .cmd = NL80211_CMD_SET_WDS_PEER,
10624 .doit = nl80211_set_wds_peer,
10625 .policy = nl80211_policy,
10626 .flags = GENL_ADMIN_PERM,
10627 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10628 NL80211_FLAG_NEED_RTNL,
10629 },
10630 {
10631 .cmd = NL80211_CMD_JOIN_MESH,
10632 .doit = nl80211_join_mesh,
10633 .policy = nl80211_policy,
10634 .flags = GENL_ADMIN_PERM,
10635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10636 NL80211_FLAG_NEED_RTNL,
10637 },
10638 {
10639 .cmd = NL80211_CMD_LEAVE_MESH,
10640 .doit = nl80211_leave_mesh,
10641 .policy = nl80211_policy,
10642 .flags = GENL_ADMIN_PERM,
10643 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10644 NL80211_FLAG_NEED_RTNL,
10645 },
10646 {
10647 .cmd = NL80211_CMD_JOIN_OCB,
10648 .doit = nl80211_join_ocb,
10649 .policy = nl80211_policy,
10650 .flags = GENL_ADMIN_PERM,
10651 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10652 NL80211_FLAG_NEED_RTNL,
10653 },
10654 {
10655 .cmd = NL80211_CMD_LEAVE_OCB,
10656 .doit = nl80211_leave_ocb,
10657 .policy = nl80211_policy,
10658 .flags = GENL_ADMIN_PERM,
10659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10660 NL80211_FLAG_NEED_RTNL,
10661 },
10662 #ifdef CONFIG_PM
10663 {
10664 .cmd = NL80211_CMD_GET_WOWLAN,
10665 .doit = nl80211_get_wowlan,
10666 .policy = nl80211_policy,
10667 /* can be retrieved by unprivileged users */
10668 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10669 NL80211_FLAG_NEED_RTNL,
10670 },
10671 {
10672 .cmd = NL80211_CMD_SET_WOWLAN,
10673 .doit = nl80211_set_wowlan,
10674 .policy = nl80211_policy,
10675 .flags = GENL_ADMIN_PERM,
10676 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10677 NL80211_FLAG_NEED_RTNL,
10678 },
10679 #endif
10680 {
10681 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10682 .doit = nl80211_set_rekey_data,
10683 .policy = nl80211_policy,
10684 .flags = GENL_ADMIN_PERM,
10685 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10686 NL80211_FLAG_NEED_RTNL |
10687 NL80211_FLAG_CLEAR_SKB,
10688 },
10689 {
10690 .cmd = NL80211_CMD_TDLS_MGMT,
10691 .doit = nl80211_tdls_mgmt,
10692 .policy = nl80211_policy,
10693 .flags = GENL_ADMIN_PERM,
10694 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10695 NL80211_FLAG_NEED_RTNL,
10696 },
10697 {
10698 .cmd = NL80211_CMD_TDLS_OPER,
10699 .doit = nl80211_tdls_oper,
10700 .policy = nl80211_policy,
10701 .flags = GENL_ADMIN_PERM,
10702 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10703 NL80211_FLAG_NEED_RTNL,
10704 },
10705 {
10706 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10707 .doit = nl80211_register_unexpected_frame,
10708 .policy = nl80211_policy,
10709 .flags = GENL_ADMIN_PERM,
10710 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10711 NL80211_FLAG_NEED_RTNL,
10712 },
10713 {
10714 .cmd = NL80211_CMD_PROBE_CLIENT,
10715 .doit = nl80211_probe_client,
10716 .policy = nl80211_policy,
10717 .flags = GENL_ADMIN_PERM,
10718 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10719 NL80211_FLAG_NEED_RTNL,
10720 },
10721 {
10722 .cmd = NL80211_CMD_REGISTER_BEACONS,
10723 .doit = nl80211_register_beacons,
10724 .policy = nl80211_policy,
10725 .flags = GENL_ADMIN_PERM,
10726 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10727 NL80211_FLAG_NEED_RTNL,
10728 },
10729 {
10730 .cmd = NL80211_CMD_SET_NOACK_MAP,
10731 .doit = nl80211_set_noack_map,
10732 .policy = nl80211_policy,
10733 .flags = GENL_ADMIN_PERM,
10734 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10735 NL80211_FLAG_NEED_RTNL,
10736 },
10737 {
10738 .cmd = NL80211_CMD_START_P2P_DEVICE,
10739 .doit = nl80211_start_p2p_device,
10740 .policy = nl80211_policy,
10741 .flags = GENL_ADMIN_PERM,
10742 .internal_flags = NL80211_FLAG_NEED_WDEV |
10743 NL80211_FLAG_NEED_RTNL,
10744 },
10745 {
10746 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10747 .doit = nl80211_stop_p2p_device,
10748 .policy = nl80211_policy,
10749 .flags = GENL_ADMIN_PERM,
10750 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10751 NL80211_FLAG_NEED_RTNL,
10752 },
10753 {
10754 .cmd = NL80211_CMD_SET_MCAST_RATE,
10755 .doit = nl80211_set_mcast_rate,
10756 .policy = nl80211_policy,
10757 .flags = GENL_ADMIN_PERM,
10758 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10759 NL80211_FLAG_NEED_RTNL,
10760 },
10761 {
10762 .cmd = NL80211_CMD_SET_MAC_ACL,
10763 .doit = nl80211_set_mac_acl,
10764 .policy = nl80211_policy,
10765 .flags = GENL_ADMIN_PERM,
10766 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10767 NL80211_FLAG_NEED_RTNL,
10768 },
10769 {
10770 .cmd = NL80211_CMD_RADAR_DETECT,
10771 .doit = nl80211_start_radar_detection,
10772 .policy = nl80211_policy,
10773 .flags = GENL_ADMIN_PERM,
10774 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10775 NL80211_FLAG_NEED_RTNL,
10776 },
10777 {
10778 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10779 .doit = nl80211_get_protocol_features,
10780 .policy = nl80211_policy,
10781 },
10782 {
10783 .cmd = NL80211_CMD_UPDATE_FT_IES,
10784 .doit = nl80211_update_ft_ies,
10785 .policy = nl80211_policy,
10786 .flags = GENL_ADMIN_PERM,
10787 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10788 NL80211_FLAG_NEED_RTNL,
10789 },
10790 {
10791 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10792 .doit = nl80211_crit_protocol_start,
10793 .policy = nl80211_policy,
10794 .flags = GENL_ADMIN_PERM,
10795 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10796 NL80211_FLAG_NEED_RTNL,
10797 },
10798 {
10799 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10800 .doit = nl80211_crit_protocol_stop,
10801 .policy = nl80211_policy,
10802 .flags = GENL_ADMIN_PERM,
10803 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10804 NL80211_FLAG_NEED_RTNL,
10805 },
10806 {
10807 .cmd = NL80211_CMD_GET_COALESCE,
10808 .doit = nl80211_get_coalesce,
10809 .policy = nl80211_policy,
10810 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10811 NL80211_FLAG_NEED_RTNL,
10812 },
10813 {
10814 .cmd = NL80211_CMD_SET_COALESCE,
10815 .doit = nl80211_set_coalesce,
10816 .policy = nl80211_policy,
10817 .flags = GENL_ADMIN_PERM,
10818 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10819 NL80211_FLAG_NEED_RTNL,
10820 },
10821 {
10822 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10823 .doit = nl80211_channel_switch,
10824 .policy = nl80211_policy,
10825 .flags = GENL_ADMIN_PERM,
10826 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10827 NL80211_FLAG_NEED_RTNL,
10828 },
10829 {
10830 .cmd = NL80211_CMD_VENDOR,
10831 .doit = nl80211_vendor_cmd,
10832 .policy = nl80211_policy,
10833 .flags = GENL_ADMIN_PERM,
10834 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10835 NL80211_FLAG_NEED_RTNL,
10836 },
10837 {
10838 .cmd = NL80211_CMD_SET_QOS_MAP,
10839 .doit = nl80211_set_qos_map,
10840 .policy = nl80211_policy,
10841 .flags = GENL_ADMIN_PERM,
10842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10843 NL80211_FLAG_NEED_RTNL,
10844 },
10845 {
10846 .cmd = NL80211_CMD_ADD_TX_TS,
10847 .doit = nl80211_add_tx_ts,
10848 .policy = nl80211_policy,
10849 .flags = GENL_ADMIN_PERM,
10850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10851 NL80211_FLAG_NEED_RTNL,
10852 },
10853 {
10854 .cmd = NL80211_CMD_DEL_TX_TS,
10855 .doit = nl80211_del_tx_ts,
10856 .policy = nl80211_policy,
10857 .flags = GENL_ADMIN_PERM,
10858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10859 NL80211_FLAG_NEED_RTNL,
10860 },
10861 {
10862 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10863 .doit = nl80211_tdls_channel_switch,
10864 .policy = nl80211_policy,
10865 .flags = GENL_ADMIN_PERM,
10866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10867 NL80211_FLAG_NEED_RTNL,
10868 },
10869 {
10870 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10871 .doit = nl80211_tdls_cancel_channel_switch,
10872 .policy = nl80211_policy,
10873 .flags = GENL_ADMIN_PERM,
10874 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10875 NL80211_FLAG_NEED_RTNL,
10876 },
10877 };
10878
10879 /* notification functions */
10880
10881 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10882 enum nl80211_commands cmd)
10883 {
10884 struct sk_buff *msg;
10885 struct nl80211_dump_wiphy_state state = {};
10886
10887 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10888 cmd != NL80211_CMD_DEL_WIPHY);
10889
10890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10891 if (!msg)
10892 return;
10893
10894 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10895 nlmsg_free(msg);
10896 return;
10897 }
10898
10899 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10900 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10901 }
10902
10903 static int nl80211_add_scan_req(struct sk_buff *msg,
10904 struct cfg80211_registered_device *rdev)
10905 {
10906 struct cfg80211_scan_request *req = rdev->scan_req;
10907 struct nlattr *nest;
10908 int i;
10909
10910 if (WARN_ON(!req))
10911 return 0;
10912
10913 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10914 if (!nest)
10915 goto nla_put_failure;
10916 for (i = 0; i < req->n_ssids; i++) {
10917 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10918 goto nla_put_failure;
10919 }
10920 nla_nest_end(msg, nest);
10921
10922 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10923 if (!nest)
10924 goto nla_put_failure;
10925 for (i = 0; i < req->n_channels; i++) {
10926 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10927 goto nla_put_failure;
10928 }
10929 nla_nest_end(msg, nest);
10930
10931 if (req->ie &&
10932 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10933 goto nla_put_failure;
10934
10935 if (req->flags &&
10936 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10937 goto nla_put_failure;
10938
10939 return 0;
10940 nla_put_failure:
10941 return -ENOBUFS;
10942 }
10943
10944 static int nl80211_send_scan_msg(struct sk_buff *msg,
10945 struct cfg80211_registered_device *rdev,
10946 struct wireless_dev *wdev,
10947 u32 portid, u32 seq, int flags,
10948 u32 cmd)
10949 {
10950 void *hdr;
10951
10952 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10953 if (!hdr)
10954 return -1;
10955
10956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10957 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10958 wdev->netdev->ifindex)) ||
10959 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10960 goto nla_put_failure;
10961
10962 /* ignore errors and send incomplete event anyway */
10963 nl80211_add_scan_req(msg, rdev);
10964
10965 return genlmsg_end(msg, hdr);
10966
10967 nla_put_failure:
10968 genlmsg_cancel(msg, hdr);
10969 return -EMSGSIZE;
10970 }
10971
10972 static int
10973 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10974 struct cfg80211_registered_device *rdev,
10975 struct net_device *netdev,
10976 u32 portid, u32 seq, int flags, u32 cmd)
10977 {
10978 void *hdr;
10979
10980 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10981 if (!hdr)
10982 return -1;
10983
10984 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10985 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10986 goto nla_put_failure;
10987
10988 return genlmsg_end(msg, hdr);
10989
10990 nla_put_failure:
10991 genlmsg_cancel(msg, hdr);
10992 return -EMSGSIZE;
10993 }
10994
10995 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10996 struct wireless_dev *wdev)
10997 {
10998 struct sk_buff *msg;
10999
11000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11001 if (!msg)
11002 return;
11003
11004 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11005 NL80211_CMD_TRIGGER_SCAN) < 0) {
11006 nlmsg_free(msg);
11007 return;
11008 }
11009
11010 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11011 NL80211_MCGRP_SCAN, GFP_KERNEL);
11012 }
11013
11014 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11015 struct wireless_dev *wdev, bool aborted)
11016 {
11017 struct sk_buff *msg;
11018
11019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11020 if (!msg)
11021 return NULL;
11022
11023 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11024 aborted ? NL80211_CMD_SCAN_ABORTED :
11025 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11026 nlmsg_free(msg);
11027 return NULL;
11028 }
11029
11030 return msg;
11031 }
11032
11033 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11034 struct sk_buff *msg)
11035 {
11036 if (!msg)
11037 return;
11038
11039 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11040 NL80211_MCGRP_SCAN, GFP_KERNEL);
11041 }
11042
11043 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11044 struct net_device *netdev)
11045 {
11046 struct sk_buff *msg;
11047
11048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11049 if (!msg)
11050 return;
11051
11052 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11053 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11054 nlmsg_free(msg);
11055 return;
11056 }
11057
11058 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11059 NL80211_MCGRP_SCAN, GFP_KERNEL);
11060 }
11061
11062 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11063 struct net_device *netdev, u32 cmd)
11064 {
11065 struct sk_buff *msg;
11066
11067 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11068 if (!msg)
11069 return;
11070
11071 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11072 nlmsg_free(msg);
11073 return;
11074 }
11075
11076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11077 NL80211_MCGRP_SCAN, GFP_KERNEL);
11078 }
11079
11080 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11081 struct regulatory_request *request)
11082 {
11083 /* Userspace can always count this one always being set */
11084 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11085 goto nla_put_failure;
11086
11087 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11088 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11089 NL80211_REGDOM_TYPE_WORLD))
11090 goto nla_put_failure;
11091 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11092 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11093 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11094 goto nla_put_failure;
11095 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11096 request->intersect) {
11097 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11098 NL80211_REGDOM_TYPE_INTERSECTION))
11099 goto nla_put_failure;
11100 } else {
11101 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11102 NL80211_REGDOM_TYPE_COUNTRY) ||
11103 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11104 request->alpha2))
11105 goto nla_put_failure;
11106 }
11107
11108 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11109 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11110
11111 if (wiphy &&
11112 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11113 goto nla_put_failure;
11114
11115 if (wiphy &&
11116 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11117 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11118 goto nla_put_failure;
11119 }
11120
11121 return true;
11122
11123 nla_put_failure:
11124 return false;
11125 }
11126
11127 /*
11128 * This can happen on global regulatory changes or device specific settings
11129 * based on custom regulatory domains.
11130 */
11131 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11132 struct regulatory_request *request)
11133 {
11134 struct sk_buff *msg;
11135 void *hdr;
11136
11137 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11138 if (!msg)
11139 return;
11140
11141 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11142 if (!hdr) {
11143 nlmsg_free(msg);
11144 return;
11145 }
11146
11147 if (nl80211_reg_change_event_fill(msg, request) == false)
11148 goto nla_put_failure;
11149
11150 genlmsg_end(msg, hdr);
11151
11152 rcu_read_lock();
11153 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11154 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11155 rcu_read_unlock();
11156
11157 return;
11158
11159 nla_put_failure:
11160 genlmsg_cancel(msg, hdr);
11161 nlmsg_free(msg);
11162 }
11163
11164 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11165 struct net_device *netdev,
11166 const u8 *buf, size_t len,
11167 enum nl80211_commands cmd, gfp_t gfp,
11168 int uapsd_queues)
11169 {
11170 struct sk_buff *msg;
11171 void *hdr;
11172
11173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11174 if (!msg)
11175 return;
11176
11177 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11178 if (!hdr) {
11179 nlmsg_free(msg);
11180 return;
11181 }
11182
11183 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11184 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11185 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11186 goto nla_put_failure;
11187
11188 if (uapsd_queues >= 0) {
11189 struct nlattr *nla_wmm =
11190 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11191 if (!nla_wmm)
11192 goto nla_put_failure;
11193
11194 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11195 uapsd_queues))
11196 goto nla_put_failure;
11197
11198 nla_nest_end(msg, nla_wmm);
11199 }
11200
11201 genlmsg_end(msg, hdr);
11202
11203 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11204 NL80211_MCGRP_MLME, gfp);
11205 return;
11206
11207 nla_put_failure:
11208 genlmsg_cancel(msg, hdr);
11209 nlmsg_free(msg);
11210 }
11211
11212 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11213 struct net_device *netdev, const u8 *buf,
11214 size_t len, gfp_t gfp)
11215 {
11216 nl80211_send_mlme_event(rdev, netdev, buf, len,
11217 NL80211_CMD_AUTHENTICATE, gfp, -1);
11218 }
11219
11220 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11221 struct net_device *netdev, const u8 *buf,
11222 size_t len, gfp_t gfp, int uapsd_queues)
11223 {
11224 nl80211_send_mlme_event(rdev, netdev, buf, len,
11225 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11226 }
11227
11228 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11229 struct net_device *netdev, const u8 *buf,
11230 size_t len, gfp_t gfp)
11231 {
11232 nl80211_send_mlme_event(rdev, netdev, buf, len,
11233 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11234 }
11235
11236 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11237 struct net_device *netdev, const u8 *buf,
11238 size_t len, gfp_t gfp)
11239 {
11240 nl80211_send_mlme_event(rdev, netdev, buf, len,
11241 NL80211_CMD_DISASSOCIATE, gfp, -1);
11242 }
11243
11244 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11245 size_t len)
11246 {
11247 struct wireless_dev *wdev = dev->ieee80211_ptr;
11248 struct wiphy *wiphy = wdev->wiphy;
11249 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11250 const struct ieee80211_mgmt *mgmt = (void *)buf;
11251 u32 cmd;
11252
11253 if (WARN_ON(len < 2))
11254 return;
11255
11256 if (ieee80211_is_deauth(mgmt->frame_control))
11257 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11258 else
11259 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11260
11261 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11262 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11263 }
11264 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11265
11266 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11267 struct net_device *netdev, int cmd,
11268 const u8 *addr, gfp_t gfp)
11269 {
11270 struct sk_buff *msg;
11271 void *hdr;
11272
11273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11274 if (!msg)
11275 return;
11276
11277 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11278 if (!hdr) {
11279 nlmsg_free(msg);
11280 return;
11281 }
11282
11283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11284 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11285 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11286 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11287 goto nla_put_failure;
11288
11289 genlmsg_end(msg, hdr);
11290
11291 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11292 NL80211_MCGRP_MLME, gfp);
11293 return;
11294
11295 nla_put_failure:
11296 genlmsg_cancel(msg, hdr);
11297 nlmsg_free(msg);
11298 }
11299
11300 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11301 struct net_device *netdev, const u8 *addr,
11302 gfp_t gfp)
11303 {
11304 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11305 addr, gfp);
11306 }
11307
11308 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11309 struct net_device *netdev, const u8 *addr,
11310 gfp_t gfp)
11311 {
11312 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11313 addr, gfp);
11314 }
11315
11316 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11317 struct net_device *netdev, const u8 *bssid,
11318 const u8 *req_ie, size_t req_ie_len,
11319 const u8 *resp_ie, size_t resp_ie_len,
11320 u16 status, gfp_t gfp)
11321 {
11322 struct sk_buff *msg;
11323 void *hdr;
11324
11325 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11326 if (!msg)
11327 return;
11328
11329 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11330 if (!hdr) {
11331 nlmsg_free(msg);
11332 return;
11333 }
11334
11335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11336 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11337 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11338 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11339 (req_ie &&
11340 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11341 (resp_ie &&
11342 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11343 goto nla_put_failure;
11344
11345 genlmsg_end(msg, hdr);
11346
11347 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11348 NL80211_MCGRP_MLME, gfp);
11349 return;
11350
11351 nla_put_failure:
11352 genlmsg_cancel(msg, hdr);
11353 nlmsg_free(msg);
11354
11355 }
11356
11357 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11358 struct net_device *netdev, const u8 *bssid,
11359 const u8 *req_ie, size_t req_ie_len,
11360 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11361 {
11362 struct sk_buff *msg;
11363 void *hdr;
11364
11365 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11366 if (!msg)
11367 return;
11368
11369 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11370 if (!hdr) {
11371 nlmsg_free(msg);
11372 return;
11373 }
11374
11375 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11376 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11377 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11378 (req_ie &&
11379 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11380 (resp_ie &&
11381 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11382 goto nla_put_failure;
11383
11384 genlmsg_end(msg, hdr);
11385
11386 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11387 NL80211_MCGRP_MLME, gfp);
11388 return;
11389
11390 nla_put_failure:
11391 genlmsg_cancel(msg, hdr);
11392 nlmsg_free(msg);
11393
11394 }
11395
11396 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11397 struct net_device *netdev, u16 reason,
11398 const u8 *ie, size_t ie_len, bool from_ap)
11399 {
11400 struct sk_buff *msg;
11401 void *hdr;
11402
11403 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11404 if (!msg)
11405 return;
11406
11407 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11408 if (!hdr) {
11409 nlmsg_free(msg);
11410 return;
11411 }
11412
11413 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11414 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11415 (from_ap && reason &&
11416 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11417 (from_ap &&
11418 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11419 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11420 goto nla_put_failure;
11421
11422 genlmsg_end(msg, hdr);
11423
11424 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11425 NL80211_MCGRP_MLME, GFP_KERNEL);
11426 return;
11427
11428 nla_put_failure:
11429 genlmsg_cancel(msg, hdr);
11430 nlmsg_free(msg);
11431
11432 }
11433
11434 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11435 struct net_device *netdev, const u8 *bssid,
11436 gfp_t gfp)
11437 {
11438 struct sk_buff *msg;
11439 void *hdr;
11440
11441 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11442 if (!msg)
11443 return;
11444
11445 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11446 if (!hdr) {
11447 nlmsg_free(msg);
11448 return;
11449 }
11450
11451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11452 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11453 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11454 goto nla_put_failure;
11455
11456 genlmsg_end(msg, hdr);
11457
11458 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11459 NL80211_MCGRP_MLME, gfp);
11460 return;
11461
11462 nla_put_failure:
11463 genlmsg_cancel(msg, hdr);
11464 nlmsg_free(msg);
11465 }
11466
11467 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11468 const u8* ie, u8 ie_len, gfp_t gfp)
11469 {
11470 struct wireless_dev *wdev = dev->ieee80211_ptr;
11471 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11472 struct sk_buff *msg;
11473 void *hdr;
11474
11475 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11476 return;
11477
11478 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11479
11480 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11481 if (!msg)
11482 return;
11483
11484 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11485 if (!hdr) {
11486 nlmsg_free(msg);
11487 return;
11488 }
11489
11490 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11491 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11492 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11493 (ie_len && ie &&
11494 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11495 goto nla_put_failure;
11496
11497 genlmsg_end(msg, hdr);
11498
11499 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11500 NL80211_MCGRP_MLME, gfp);
11501 return;
11502
11503 nla_put_failure:
11504 genlmsg_cancel(msg, hdr);
11505 nlmsg_free(msg);
11506 }
11507 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11508
11509 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11510 struct net_device *netdev, const u8 *addr,
11511 enum nl80211_key_type key_type, int key_id,
11512 const u8 *tsc, gfp_t gfp)
11513 {
11514 struct sk_buff *msg;
11515 void *hdr;
11516
11517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11518 if (!msg)
11519 return;
11520
11521 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11522 if (!hdr) {
11523 nlmsg_free(msg);
11524 return;
11525 }
11526
11527 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11528 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11529 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11530 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11531 (key_id != -1 &&
11532 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11533 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11534 goto nla_put_failure;
11535
11536 genlmsg_end(msg, hdr);
11537
11538 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11539 NL80211_MCGRP_MLME, gfp);
11540 return;
11541
11542 nla_put_failure:
11543 genlmsg_cancel(msg, hdr);
11544 nlmsg_free(msg);
11545 }
11546
11547 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11548 struct ieee80211_channel *channel_before,
11549 struct ieee80211_channel *channel_after)
11550 {
11551 struct sk_buff *msg;
11552 void *hdr;
11553 struct nlattr *nl_freq;
11554
11555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11556 if (!msg)
11557 return;
11558
11559 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11560 if (!hdr) {
11561 nlmsg_free(msg);
11562 return;
11563 }
11564
11565 /*
11566 * Since we are applying the beacon hint to a wiphy we know its
11567 * wiphy_idx is valid
11568 */
11569 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11570 goto nla_put_failure;
11571
11572 /* Before */
11573 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11574 if (!nl_freq)
11575 goto nla_put_failure;
11576 if (nl80211_msg_put_channel(msg, channel_before, false))
11577 goto nla_put_failure;
11578 nla_nest_end(msg, nl_freq);
11579
11580 /* After */
11581 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11582 if (!nl_freq)
11583 goto nla_put_failure;
11584 if (nl80211_msg_put_channel(msg, channel_after, false))
11585 goto nla_put_failure;
11586 nla_nest_end(msg, nl_freq);
11587
11588 genlmsg_end(msg, hdr);
11589
11590 rcu_read_lock();
11591 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11592 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11593 rcu_read_unlock();
11594
11595 return;
11596
11597 nla_put_failure:
11598 genlmsg_cancel(msg, hdr);
11599 nlmsg_free(msg);
11600 }
11601
11602 static void nl80211_send_remain_on_chan_event(
11603 int cmd, struct cfg80211_registered_device *rdev,
11604 struct wireless_dev *wdev, u64 cookie,
11605 struct ieee80211_channel *chan,
11606 unsigned int duration, gfp_t gfp)
11607 {
11608 struct sk_buff *msg;
11609 void *hdr;
11610
11611 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11612 if (!msg)
11613 return;
11614
11615 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11616 if (!hdr) {
11617 nlmsg_free(msg);
11618 return;
11619 }
11620
11621 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11622 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11623 wdev->netdev->ifindex)) ||
11624 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11625 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11626 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11627 NL80211_CHAN_NO_HT) ||
11628 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11629 goto nla_put_failure;
11630
11631 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11632 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11633 goto nla_put_failure;
11634
11635 genlmsg_end(msg, hdr);
11636
11637 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11638 NL80211_MCGRP_MLME, gfp);
11639 return;
11640
11641 nla_put_failure:
11642 genlmsg_cancel(msg, hdr);
11643 nlmsg_free(msg);
11644 }
11645
11646 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11647 struct ieee80211_channel *chan,
11648 unsigned int duration, gfp_t gfp)
11649 {
11650 struct wiphy *wiphy = wdev->wiphy;
11651 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11652
11653 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11654 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11655 rdev, wdev, cookie, chan,
11656 duration, gfp);
11657 }
11658 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11659
11660 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11661 struct ieee80211_channel *chan,
11662 gfp_t gfp)
11663 {
11664 struct wiphy *wiphy = wdev->wiphy;
11665 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11666
11667 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11668 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11669 rdev, wdev, cookie, chan, 0, gfp);
11670 }
11671 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11672
11673 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11674 struct station_info *sinfo, gfp_t gfp)
11675 {
11676 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11677 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11678 struct sk_buff *msg;
11679
11680 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11681
11682 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11683 if (!msg)
11684 return;
11685
11686 if (nl80211_send_station(msg, 0, 0, 0,
11687 rdev, dev, mac_addr, sinfo) < 0) {
11688 nlmsg_free(msg);
11689 return;
11690 }
11691
11692 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11693 NL80211_MCGRP_MLME, gfp);
11694 }
11695 EXPORT_SYMBOL(cfg80211_new_sta);
11696
11697 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11698 {
11699 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11700 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11701 struct sk_buff *msg;
11702 void *hdr;
11703
11704 trace_cfg80211_del_sta(dev, mac_addr);
11705
11706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11707 if (!msg)
11708 return;
11709
11710 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11711 if (!hdr) {
11712 nlmsg_free(msg);
11713 return;
11714 }
11715
11716 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11717 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11718 goto nla_put_failure;
11719
11720 genlmsg_end(msg, hdr);
11721
11722 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11723 NL80211_MCGRP_MLME, gfp);
11724 return;
11725
11726 nla_put_failure:
11727 genlmsg_cancel(msg, hdr);
11728 nlmsg_free(msg);
11729 }
11730 EXPORT_SYMBOL(cfg80211_del_sta);
11731
11732 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11733 enum nl80211_connect_failed_reason reason,
11734 gfp_t gfp)
11735 {
11736 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11737 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11738 struct sk_buff *msg;
11739 void *hdr;
11740
11741 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11742 if (!msg)
11743 return;
11744
11745 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11746 if (!hdr) {
11747 nlmsg_free(msg);
11748 return;
11749 }
11750
11751 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11752 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11753 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11754 goto nla_put_failure;
11755
11756 genlmsg_end(msg, hdr);
11757
11758 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11759 NL80211_MCGRP_MLME, gfp);
11760 return;
11761
11762 nla_put_failure:
11763 genlmsg_cancel(msg, hdr);
11764 nlmsg_free(msg);
11765 }
11766 EXPORT_SYMBOL(cfg80211_conn_failed);
11767
11768 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11769 const u8 *addr, gfp_t gfp)
11770 {
11771 struct wireless_dev *wdev = dev->ieee80211_ptr;
11772 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11773 struct sk_buff *msg;
11774 void *hdr;
11775 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11776
11777 if (!nlportid)
11778 return false;
11779
11780 msg = nlmsg_new(100, gfp);
11781 if (!msg)
11782 return true;
11783
11784 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11785 if (!hdr) {
11786 nlmsg_free(msg);
11787 return true;
11788 }
11789
11790 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11791 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11792 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11793 goto nla_put_failure;
11794
11795 genlmsg_end(msg, hdr);
11796 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11797 return true;
11798
11799 nla_put_failure:
11800 genlmsg_cancel(msg, hdr);
11801 nlmsg_free(msg);
11802 return true;
11803 }
11804
11805 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11806 const u8 *addr, gfp_t gfp)
11807 {
11808 struct wireless_dev *wdev = dev->ieee80211_ptr;
11809 bool ret;
11810
11811 trace_cfg80211_rx_spurious_frame(dev, addr);
11812
11813 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11814 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11815 trace_cfg80211_return_bool(false);
11816 return false;
11817 }
11818 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11819 addr, gfp);
11820 trace_cfg80211_return_bool(ret);
11821 return ret;
11822 }
11823 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11824
11825 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11826 const u8 *addr, gfp_t gfp)
11827 {
11828 struct wireless_dev *wdev = dev->ieee80211_ptr;
11829 bool ret;
11830
11831 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11832
11833 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11834 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11835 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11836 trace_cfg80211_return_bool(false);
11837 return false;
11838 }
11839 ret = __nl80211_unexpected_frame(dev,
11840 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11841 addr, gfp);
11842 trace_cfg80211_return_bool(ret);
11843 return ret;
11844 }
11845 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11846
11847 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11848 struct wireless_dev *wdev, u32 nlportid,
11849 int freq, int sig_dbm,
11850 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11851 {
11852 struct net_device *netdev = wdev->netdev;
11853 struct sk_buff *msg;
11854 void *hdr;
11855
11856 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11857 if (!msg)
11858 return -ENOMEM;
11859
11860 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11861 if (!hdr) {
11862 nlmsg_free(msg);
11863 return -ENOMEM;
11864 }
11865
11866 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11867 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11868 netdev->ifindex)) ||
11869 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11870 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11871 (sig_dbm &&
11872 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11873 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11874 (flags &&
11875 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11876 goto nla_put_failure;
11877
11878 genlmsg_end(msg, hdr);
11879
11880 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11881
11882 nla_put_failure:
11883 genlmsg_cancel(msg, hdr);
11884 nlmsg_free(msg);
11885 return -ENOBUFS;
11886 }
11887
11888 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11889 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11890 {
11891 struct wiphy *wiphy = wdev->wiphy;
11892 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11893 struct net_device *netdev = wdev->netdev;
11894 struct sk_buff *msg;
11895 void *hdr;
11896
11897 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11898
11899 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11900 if (!msg)
11901 return;
11902
11903 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11904 if (!hdr) {
11905 nlmsg_free(msg);
11906 return;
11907 }
11908
11909 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11910 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11911 netdev->ifindex)) ||
11912 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11913 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11914 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11915 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11916 goto nla_put_failure;
11917
11918 genlmsg_end(msg, hdr);
11919
11920 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11921 NL80211_MCGRP_MLME, gfp);
11922 return;
11923
11924 nla_put_failure:
11925 genlmsg_cancel(msg, hdr);
11926 nlmsg_free(msg);
11927 }
11928 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11929
11930 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11931 const char *mac, gfp_t gfp)
11932 {
11933 struct wireless_dev *wdev = dev->ieee80211_ptr;
11934 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11935 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11936 void **cb;
11937
11938 if (!msg)
11939 return NULL;
11940
11941 cb = (void **)msg->cb;
11942
11943 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11944 if (!cb[0]) {
11945 nlmsg_free(msg);
11946 return NULL;
11947 }
11948
11949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11951 goto nla_put_failure;
11952
11953 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11954 goto nla_put_failure;
11955
11956 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11957 if (!cb[1])
11958 goto nla_put_failure;
11959
11960 cb[2] = rdev;
11961
11962 return msg;
11963 nla_put_failure:
11964 nlmsg_free(msg);
11965 return NULL;
11966 }
11967
11968 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11969 {
11970 void **cb = (void **)msg->cb;
11971 struct cfg80211_registered_device *rdev = cb[2];
11972
11973 nla_nest_end(msg, cb[1]);
11974 genlmsg_end(msg, cb[0]);
11975
11976 memset(msg->cb, 0, sizeof(msg->cb));
11977
11978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11979 NL80211_MCGRP_MLME, gfp);
11980 }
11981
11982 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11983 enum nl80211_cqm_rssi_threshold_event rssi_event,
11984 gfp_t gfp)
11985 {
11986 struct sk_buff *msg;
11987
11988 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11989
11990 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11991 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11992 return;
11993
11994 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11995 if (!msg)
11996 return;
11997
11998 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11999 rssi_event))
12000 goto nla_put_failure;
12001
12002 cfg80211_send_cqm(msg, gfp);
12003
12004 return;
12005
12006 nla_put_failure:
12007 nlmsg_free(msg);
12008 }
12009 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12010
12011 void cfg80211_cqm_txe_notify(struct net_device *dev,
12012 const u8 *peer, u32 num_packets,
12013 u32 rate, u32 intvl, gfp_t gfp)
12014 {
12015 struct sk_buff *msg;
12016
12017 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12018 if (!msg)
12019 return;
12020
12021 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12022 goto nla_put_failure;
12023
12024 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12025 goto nla_put_failure;
12026
12027 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12028 goto nla_put_failure;
12029
12030 cfg80211_send_cqm(msg, gfp);
12031 return;
12032
12033 nla_put_failure:
12034 nlmsg_free(msg);
12035 }
12036 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12037
12038 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12039 const u8 *peer, u32 num_packets, gfp_t gfp)
12040 {
12041 struct sk_buff *msg;
12042
12043 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12044
12045 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12046 if (!msg)
12047 return;
12048
12049 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12050 goto nla_put_failure;
12051
12052 cfg80211_send_cqm(msg, gfp);
12053 return;
12054
12055 nla_put_failure:
12056 nlmsg_free(msg);
12057 }
12058 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12059
12060 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12061 {
12062 struct sk_buff *msg;
12063
12064 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12065 if (!msg)
12066 return;
12067
12068 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12069 goto nla_put_failure;
12070
12071 cfg80211_send_cqm(msg, gfp);
12072 return;
12073
12074 nla_put_failure:
12075 nlmsg_free(msg);
12076 }
12077 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12078
12079 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12080 struct net_device *netdev, const u8 *bssid,
12081 const u8 *replay_ctr, gfp_t gfp)
12082 {
12083 struct sk_buff *msg;
12084 struct nlattr *rekey_attr;
12085 void *hdr;
12086
12087 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12088 if (!msg)
12089 return;
12090
12091 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12092 if (!hdr) {
12093 nlmsg_free(msg);
12094 return;
12095 }
12096
12097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12098 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12099 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12100 goto nla_put_failure;
12101
12102 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12103 if (!rekey_attr)
12104 goto nla_put_failure;
12105
12106 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12107 NL80211_REPLAY_CTR_LEN, replay_ctr))
12108 goto nla_put_failure;
12109
12110 nla_nest_end(msg, rekey_attr);
12111
12112 genlmsg_end(msg, hdr);
12113
12114 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12115 NL80211_MCGRP_MLME, gfp);
12116 return;
12117
12118 nla_put_failure:
12119 genlmsg_cancel(msg, hdr);
12120 nlmsg_free(msg);
12121 }
12122
12123 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12124 const u8 *replay_ctr, gfp_t gfp)
12125 {
12126 struct wireless_dev *wdev = dev->ieee80211_ptr;
12127 struct wiphy *wiphy = wdev->wiphy;
12128 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12129
12130 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12131 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12132 }
12133 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12134
12135 static void
12136 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12137 struct net_device *netdev, int index,
12138 const u8 *bssid, bool preauth, gfp_t gfp)
12139 {
12140 struct sk_buff *msg;
12141 struct nlattr *attr;
12142 void *hdr;
12143
12144 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12145 if (!msg)
12146 return;
12147
12148 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12149 if (!hdr) {
12150 nlmsg_free(msg);
12151 return;
12152 }
12153
12154 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12155 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12156 goto nla_put_failure;
12157
12158 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12159 if (!attr)
12160 goto nla_put_failure;
12161
12162 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12163 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12164 (preauth &&
12165 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12166 goto nla_put_failure;
12167
12168 nla_nest_end(msg, attr);
12169
12170 genlmsg_end(msg, hdr);
12171
12172 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12173 NL80211_MCGRP_MLME, gfp);
12174 return;
12175
12176 nla_put_failure:
12177 genlmsg_cancel(msg, hdr);
12178 nlmsg_free(msg);
12179 }
12180
12181 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12182 const u8 *bssid, bool preauth, gfp_t gfp)
12183 {
12184 struct wireless_dev *wdev = dev->ieee80211_ptr;
12185 struct wiphy *wiphy = wdev->wiphy;
12186 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12187
12188 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12189 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12190 }
12191 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12192
12193 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12194 struct net_device *netdev,
12195 struct cfg80211_chan_def *chandef,
12196 gfp_t gfp,
12197 enum nl80211_commands notif,
12198 u8 count)
12199 {
12200 struct sk_buff *msg;
12201 void *hdr;
12202
12203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12204 if (!msg)
12205 return;
12206
12207 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12208 if (!hdr) {
12209 nlmsg_free(msg);
12210 return;
12211 }
12212
12213 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12214 goto nla_put_failure;
12215
12216 if (nl80211_send_chandef(msg, chandef))
12217 goto nla_put_failure;
12218
12219 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12220 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12221 goto nla_put_failure;
12222
12223 genlmsg_end(msg, hdr);
12224
12225 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12226 NL80211_MCGRP_MLME, gfp);
12227 return;
12228
12229 nla_put_failure:
12230 genlmsg_cancel(msg, hdr);
12231 nlmsg_free(msg);
12232 }
12233
12234 void cfg80211_ch_switch_notify(struct net_device *dev,
12235 struct cfg80211_chan_def *chandef)
12236 {
12237 struct wireless_dev *wdev = dev->ieee80211_ptr;
12238 struct wiphy *wiphy = wdev->wiphy;
12239 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12240
12241 ASSERT_WDEV_LOCK(wdev);
12242
12243 trace_cfg80211_ch_switch_notify(dev, chandef);
12244
12245 wdev->chandef = *chandef;
12246 wdev->preset_chandef = *chandef;
12247 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12248 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12249 }
12250 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12251
12252 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12253 struct cfg80211_chan_def *chandef,
12254 u8 count)
12255 {
12256 struct wireless_dev *wdev = dev->ieee80211_ptr;
12257 struct wiphy *wiphy = wdev->wiphy;
12258 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12259
12260 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12261
12262 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12263 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12264 }
12265 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12266
12267 void
12268 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12269 const struct cfg80211_chan_def *chandef,
12270 enum nl80211_radar_event event,
12271 struct net_device *netdev, gfp_t gfp)
12272 {
12273 struct sk_buff *msg;
12274 void *hdr;
12275
12276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12277 if (!msg)
12278 return;
12279
12280 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12281 if (!hdr) {
12282 nlmsg_free(msg);
12283 return;
12284 }
12285
12286 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12287 goto nla_put_failure;
12288
12289 /* NOP and radar events don't need a netdev parameter */
12290 if (netdev) {
12291 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12292
12293 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12294 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12295 goto nla_put_failure;
12296 }
12297
12298 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12299 goto nla_put_failure;
12300
12301 if (nl80211_send_chandef(msg, chandef))
12302 goto nla_put_failure;
12303
12304 genlmsg_end(msg, hdr);
12305
12306 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12307 NL80211_MCGRP_MLME, gfp);
12308 return;
12309
12310 nla_put_failure:
12311 genlmsg_cancel(msg, hdr);
12312 nlmsg_free(msg);
12313 }
12314
12315 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12316 u64 cookie, bool acked, gfp_t gfp)
12317 {
12318 struct wireless_dev *wdev = dev->ieee80211_ptr;
12319 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12320 struct sk_buff *msg;
12321 void *hdr;
12322
12323 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12324
12325 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12326
12327 if (!msg)
12328 return;
12329
12330 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12331 if (!hdr) {
12332 nlmsg_free(msg);
12333 return;
12334 }
12335
12336 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12337 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12338 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12339 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12340 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12341 goto nla_put_failure;
12342
12343 genlmsg_end(msg, hdr);
12344
12345 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12346 NL80211_MCGRP_MLME, gfp);
12347 return;
12348
12349 nla_put_failure:
12350 genlmsg_cancel(msg, hdr);
12351 nlmsg_free(msg);
12352 }
12353 EXPORT_SYMBOL(cfg80211_probe_status);
12354
12355 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12356 const u8 *frame, size_t len,
12357 int freq, int sig_dbm)
12358 {
12359 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12360 struct sk_buff *msg;
12361 void *hdr;
12362 struct cfg80211_beacon_registration *reg;
12363
12364 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12365
12366 spin_lock_bh(&rdev->beacon_registrations_lock);
12367 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12368 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12369 if (!msg) {
12370 spin_unlock_bh(&rdev->beacon_registrations_lock);
12371 return;
12372 }
12373
12374 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12375 if (!hdr)
12376 goto nla_put_failure;
12377
12378 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12379 (freq &&
12380 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12381 (sig_dbm &&
12382 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12383 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12384 goto nla_put_failure;
12385
12386 genlmsg_end(msg, hdr);
12387
12388 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12389 }
12390 spin_unlock_bh(&rdev->beacon_registrations_lock);
12391 return;
12392
12393 nla_put_failure:
12394 spin_unlock_bh(&rdev->beacon_registrations_lock);
12395 if (hdr)
12396 genlmsg_cancel(msg, hdr);
12397 nlmsg_free(msg);
12398 }
12399 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12400
12401 #ifdef CONFIG_PM
12402 static int cfg80211_net_detect_results(struct sk_buff *msg,
12403 struct cfg80211_wowlan_wakeup *wakeup)
12404 {
12405 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12406 struct nlattr *nl_results, *nl_match, *nl_freqs;
12407 int i, j;
12408
12409 nl_results = nla_nest_start(
12410 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12411 if (!nl_results)
12412 return -EMSGSIZE;
12413
12414 for (i = 0; i < nd->n_matches; i++) {
12415 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12416
12417 nl_match = nla_nest_start(msg, i);
12418 if (!nl_match)
12419 break;
12420
12421 /* The SSID attribute is optional in nl80211, but for
12422 * simplicity reasons it's always present in the
12423 * cfg80211 structure. If a driver can't pass the
12424 * SSID, that needs to be changed. A zero length SSID
12425 * is still a valid SSID (wildcard), so it cannot be
12426 * used for this purpose.
12427 */
12428 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12429 match->ssid.ssid)) {
12430 nla_nest_cancel(msg, nl_match);
12431 goto out;
12432 }
12433
12434 if (match->n_channels) {
12435 nl_freqs = nla_nest_start(
12436 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12437 if (!nl_freqs) {
12438 nla_nest_cancel(msg, nl_match);
12439 goto out;
12440 }
12441
12442 for (j = 0; j < match->n_channels; j++) {
12443 if (nla_put_u32(msg,
12444 NL80211_ATTR_WIPHY_FREQ,
12445 match->channels[j])) {
12446 nla_nest_cancel(msg, nl_freqs);
12447 nla_nest_cancel(msg, nl_match);
12448 goto out;
12449 }
12450 }
12451
12452 nla_nest_end(msg, nl_freqs);
12453 }
12454
12455 nla_nest_end(msg, nl_match);
12456 }
12457
12458 out:
12459 nla_nest_end(msg, nl_results);
12460 return 0;
12461 }
12462
12463 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12464 struct cfg80211_wowlan_wakeup *wakeup,
12465 gfp_t gfp)
12466 {
12467 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12468 struct sk_buff *msg;
12469 void *hdr;
12470 int size = 200;
12471
12472 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12473
12474 if (wakeup)
12475 size += wakeup->packet_present_len;
12476
12477 msg = nlmsg_new(size, gfp);
12478 if (!msg)
12479 return;
12480
12481 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12482 if (!hdr)
12483 goto free_msg;
12484
12485 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12486 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12487 goto free_msg;
12488
12489 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12490 wdev->netdev->ifindex))
12491 goto free_msg;
12492
12493 if (wakeup) {
12494 struct nlattr *reasons;
12495
12496 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12497 if (!reasons)
12498 goto free_msg;
12499
12500 if (wakeup->disconnect &&
12501 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12502 goto free_msg;
12503 if (wakeup->magic_pkt &&
12504 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12505 goto free_msg;
12506 if (wakeup->gtk_rekey_failure &&
12507 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12508 goto free_msg;
12509 if (wakeup->eap_identity_req &&
12510 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12511 goto free_msg;
12512 if (wakeup->four_way_handshake &&
12513 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12514 goto free_msg;
12515 if (wakeup->rfkill_release &&
12516 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12517 goto free_msg;
12518
12519 if (wakeup->pattern_idx >= 0 &&
12520 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12521 wakeup->pattern_idx))
12522 goto free_msg;
12523
12524 if (wakeup->tcp_match &&
12525 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12526 goto free_msg;
12527
12528 if (wakeup->tcp_connlost &&
12529 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12530 goto free_msg;
12531
12532 if (wakeup->tcp_nomoretokens &&
12533 nla_put_flag(msg,
12534 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12535 goto free_msg;
12536
12537 if (wakeup->packet) {
12538 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12539 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12540
12541 if (!wakeup->packet_80211) {
12542 pkt_attr =
12543 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12544 len_attr =
12545 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12546 }
12547
12548 if (wakeup->packet_len &&
12549 nla_put_u32(msg, len_attr, wakeup->packet_len))
12550 goto free_msg;
12551
12552 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12553 wakeup->packet))
12554 goto free_msg;
12555 }
12556
12557 if (wakeup->net_detect &&
12558 cfg80211_net_detect_results(msg, wakeup))
12559 goto free_msg;
12560
12561 nla_nest_end(msg, reasons);
12562 }
12563
12564 genlmsg_end(msg, hdr);
12565
12566 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12567 NL80211_MCGRP_MLME, gfp);
12568 return;
12569
12570 free_msg:
12571 nlmsg_free(msg);
12572 }
12573 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12574 #endif
12575
12576 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12577 enum nl80211_tdls_operation oper,
12578 u16 reason_code, gfp_t gfp)
12579 {
12580 struct wireless_dev *wdev = dev->ieee80211_ptr;
12581 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12582 struct sk_buff *msg;
12583 void *hdr;
12584
12585 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12586 reason_code);
12587
12588 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12589 if (!msg)
12590 return;
12591
12592 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12593 if (!hdr) {
12594 nlmsg_free(msg);
12595 return;
12596 }
12597
12598 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12599 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12600 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12601 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12602 (reason_code > 0 &&
12603 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12604 goto nla_put_failure;
12605
12606 genlmsg_end(msg, hdr);
12607
12608 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12609 NL80211_MCGRP_MLME, gfp);
12610 return;
12611
12612 nla_put_failure:
12613 genlmsg_cancel(msg, hdr);
12614 nlmsg_free(msg);
12615 }
12616 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12617
12618 static int nl80211_netlink_notify(struct notifier_block * nb,
12619 unsigned long state,
12620 void *_notify)
12621 {
12622 struct netlink_notify *notify = _notify;
12623 struct cfg80211_registered_device *rdev;
12624 struct wireless_dev *wdev;
12625 struct cfg80211_beacon_registration *reg, *tmp;
12626
12627 if (state != NETLINK_URELEASE)
12628 return NOTIFY_DONE;
12629
12630 rcu_read_lock();
12631
12632 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12633 bool schedule_destroy_work = false;
12634 bool schedule_scan_stop = false;
12635 struct cfg80211_sched_scan_request *sched_scan_req =
12636 rcu_dereference(rdev->sched_scan_req);
12637
12638 if (sched_scan_req && notify->portid &&
12639 sched_scan_req->owner_nlportid == notify->portid)
12640 schedule_scan_stop = true;
12641
12642 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12643 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12644
12645 if (wdev->owner_nlportid == notify->portid)
12646 schedule_destroy_work = true;
12647 }
12648
12649 spin_lock_bh(&rdev->beacon_registrations_lock);
12650 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12651 list) {
12652 if (reg->nlportid == notify->portid) {
12653 list_del(&reg->list);
12654 kfree(reg);
12655 break;
12656 }
12657 }
12658 spin_unlock_bh(&rdev->beacon_registrations_lock);
12659
12660 if (schedule_destroy_work) {
12661 struct cfg80211_iface_destroy *destroy;
12662
12663 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12664 if (destroy) {
12665 destroy->nlportid = notify->portid;
12666 spin_lock(&rdev->destroy_list_lock);
12667 list_add(&destroy->list, &rdev->destroy_list);
12668 spin_unlock(&rdev->destroy_list_lock);
12669 schedule_work(&rdev->destroy_work);
12670 }
12671 } else if (schedule_scan_stop) {
12672 sched_scan_req->owner_nlportid = 0;
12673
12674 if (rdev->ops->sched_scan_stop &&
12675 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12676 schedule_work(&rdev->sched_scan_stop_wk);
12677 }
12678 }
12679
12680 rcu_read_unlock();
12681
12682 return NOTIFY_OK;
12683 }
12684
12685 static struct notifier_block nl80211_netlink_notifier = {
12686 .notifier_call = nl80211_netlink_notify,
12687 };
12688
12689 void cfg80211_ft_event(struct net_device *netdev,
12690 struct cfg80211_ft_event_params *ft_event)
12691 {
12692 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12693 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12694 struct sk_buff *msg;
12695 void *hdr;
12696
12697 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12698
12699 if (!ft_event->target_ap)
12700 return;
12701
12702 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12703 if (!msg)
12704 return;
12705
12706 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12707 if (!hdr)
12708 goto out;
12709
12710 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12711 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12712 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12713 goto out;
12714
12715 if (ft_event->ies &&
12716 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12717 goto out;
12718 if (ft_event->ric_ies &&
12719 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12720 ft_event->ric_ies))
12721 goto out;
12722
12723 genlmsg_end(msg, hdr);
12724
12725 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12726 NL80211_MCGRP_MLME, GFP_KERNEL);
12727 return;
12728 out:
12729 nlmsg_free(msg);
12730 }
12731 EXPORT_SYMBOL(cfg80211_ft_event);
12732
12733 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12734 {
12735 struct cfg80211_registered_device *rdev;
12736 struct sk_buff *msg;
12737 void *hdr;
12738 u32 nlportid;
12739
12740 rdev = wiphy_to_rdev(wdev->wiphy);
12741 if (!rdev->crit_proto_nlportid)
12742 return;
12743
12744 nlportid = rdev->crit_proto_nlportid;
12745 rdev->crit_proto_nlportid = 0;
12746
12747 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12748 if (!msg)
12749 return;
12750
12751 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12752 if (!hdr)
12753 goto nla_put_failure;
12754
12755 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12756 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12757 goto nla_put_failure;
12758
12759 genlmsg_end(msg, hdr);
12760
12761 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12762 return;
12763
12764 nla_put_failure:
12765 if (hdr)
12766 genlmsg_cancel(msg, hdr);
12767 nlmsg_free(msg);
12768
12769 }
12770 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12771
12772 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12773 {
12774 struct wiphy *wiphy = wdev->wiphy;
12775 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12776 struct sk_buff *msg;
12777 void *hdr;
12778
12779 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12780 if (!msg)
12781 return;
12782
12783 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12784 if (!hdr)
12785 goto out;
12786
12787 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12788 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12789 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12790 goto out;
12791
12792 genlmsg_end(msg, hdr);
12793
12794 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12795 NL80211_MCGRP_MLME, GFP_KERNEL);
12796 return;
12797 out:
12798 nlmsg_free(msg);
12799 }
12800
12801 /* initialisation/exit functions */
12802
12803 int nl80211_init(void)
12804 {
12805 int err;
12806
12807 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12808 nl80211_mcgrps);
12809 if (err)
12810 return err;
12811
12812 err = netlink_register_notifier(&nl80211_netlink_notifier);
12813 if (err)
12814 goto err_out;
12815
12816 return 0;
12817 err_out:
12818 genl_unregister_family(&nl80211_fam);
12819 return err;
12820 }
12821
12822 void nl80211_exit(void)
12823 {
12824 netlink_unregister_notifier(&nl80211_netlink_notifier);
12825 genl_unregister_family(&nl80211_fam);
12826 }
Linux kernel - Deliverables
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