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nl80211: don't crash sending invalid chandef
[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 = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "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 };
400
401 /* policy for the key attributes */
402 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
403 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
404 [NL80211_KEY_IDX] = { .type = NLA_U8 },
405 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
406 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
407 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
408 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
409 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
410 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
411 };
412
413 /* policy for the key default flags */
414 static const struct nla_policy
415 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
416 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
417 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
418 };
419
420 /* policy for WoWLAN attributes */
421 static const struct nla_policy
422 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
423 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
424 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
426 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
427 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
432 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
433 };
434
435 static const struct nla_policy
436 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
437 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
438 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
439 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
440 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
441 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
442 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
443 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
444 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
445 },
446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
447 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
448 },
449 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
450 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
451 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
452 };
453
454 /* policy for coalesce rule attributes */
455 static const struct nla_policy
456 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
457 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
458 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
459 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
460 };
461
462 /* policy for GTK rekey offload attributes */
463 static const struct nla_policy
464 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
465 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
466 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
467 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
468 };
469
470 static const struct nla_policy
471 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
472 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
473 .len = IEEE80211_MAX_SSID_LEN },
474 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
475 };
476
477 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
478 struct netlink_callback *cb,
479 struct cfg80211_registered_device **rdev,
480 struct wireless_dev **wdev)
481 {
482 int err;
483
484 rtnl_lock();
485
486 if (!cb->args[0]) {
487 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
488 nl80211_fam.attrbuf, nl80211_fam.maxattr,
489 nl80211_policy);
490 if (err)
491 goto out_unlock;
492
493 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
494 nl80211_fam.attrbuf);
495 if (IS_ERR(*wdev)) {
496 err = PTR_ERR(*wdev);
497 goto out_unlock;
498 }
499 *rdev = wiphy_to_rdev((*wdev)->wiphy);
500 /* 0 is the first index - add 1 to parse only once */
501 cb->args[0] = (*rdev)->wiphy_idx + 1;
502 cb->args[1] = (*wdev)->identifier;
503 } else {
504 /* subtract the 1 again here */
505 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
506 struct wireless_dev *tmp;
507
508 if (!wiphy) {
509 err = -ENODEV;
510 goto out_unlock;
511 }
512 *rdev = wiphy_to_rdev(wiphy);
513 *wdev = NULL;
514
515 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
516 if (tmp->identifier == cb->args[1]) {
517 *wdev = tmp;
518 break;
519 }
520 }
521
522 if (!*wdev) {
523 err = -ENODEV;
524 goto out_unlock;
525 }
526 }
527
528 return 0;
529 out_unlock:
530 rtnl_unlock();
531 return err;
532 }
533
534 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
535 {
536 rtnl_unlock();
537 }
538
539 /* IE validation */
540 static bool is_valid_ie_attr(const struct nlattr *attr)
541 {
542 const u8 *pos;
543 int len;
544
545 if (!attr)
546 return true;
547
548 pos = nla_data(attr);
549 len = nla_len(attr);
550
551 while (len) {
552 u8 elemlen;
553
554 if (len < 2)
555 return false;
556 len -= 2;
557
558 elemlen = pos[1];
559 if (elemlen > len)
560 return false;
561
562 len -= elemlen;
563 pos += 2 + elemlen;
564 }
565
566 return true;
567 }
568
569 /* message building helper */
570 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
571 int flags, u8 cmd)
572 {
573 /* since there is no private header just add the generic one */
574 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
575 }
576
577 static int nl80211_msg_put_channel(struct sk_buff *msg,
578 struct ieee80211_channel *chan,
579 bool large)
580 {
581 /* Some channels must be completely excluded from the
582 * list to protect old user-space tools from breaking
583 */
584 if (!large && chan->flags &
585 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
586 return 0;
587
588 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
589 chan->center_freq))
590 goto nla_put_failure;
591
592 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
593 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
594 goto nla_put_failure;
595 if (chan->flags & IEEE80211_CHAN_NO_IR) {
596 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
597 goto nla_put_failure;
598 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
599 goto nla_put_failure;
600 }
601 if (chan->flags & IEEE80211_CHAN_RADAR) {
602 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
603 goto nla_put_failure;
604 if (large) {
605 u32 time;
606
607 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
608
609 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
610 chan->dfs_state))
611 goto nla_put_failure;
612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
613 time))
614 goto nla_put_failure;
615 if (nla_put_u32(msg,
616 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
617 chan->dfs_cac_ms))
618 goto nla_put_failure;
619 }
620 }
621
622 if (large) {
623 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
624 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
625 goto nla_put_failure;
626 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
628 goto nla_put_failure;
629 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
631 goto nla_put_failure;
632 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
634 goto nla_put_failure;
635 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
637 goto nla_put_failure;
638 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
640 goto nla_put_failure;
641 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
643 goto nla_put_failure;
644 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
646 goto nla_put_failure;
647 }
648
649 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
650 DBM_TO_MBM(chan->max_power)))
651 goto nla_put_failure;
652
653 return 0;
654
655 nla_put_failure:
656 return -ENOBUFS;
657 }
658
659 /* netlink command implementations */
660
661 struct key_parse {
662 struct key_params p;
663 int idx;
664 int type;
665 bool def, defmgmt;
666 bool def_uni, def_multi;
667 };
668
669 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
670 {
671 struct nlattr *tb[NL80211_KEY_MAX + 1];
672 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
673 nl80211_key_policy);
674 if (err)
675 return err;
676
677 k->def = !!tb[NL80211_KEY_DEFAULT];
678 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
679
680 if (k->def) {
681 k->def_uni = true;
682 k->def_multi = true;
683 }
684 if (k->defmgmt)
685 k->def_multi = true;
686
687 if (tb[NL80211_KEY_IDX])
688 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
689
690 if (tb[NL80211_KEY_DATA]) {
691 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
692 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
693 }
694
695 if (tb[NL80211_KEY_SEQ]) {
696 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
697 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
698 }
699
700 if (tb[NL80211_KEY_CIPHER])
701 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
702
703 if (tb[NL80211_KEY_TYPE]) {
704 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
705 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
706 return -EINVAL;
707 }
708
709 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
710 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
711 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
712 tb[NL80211_KEY_DEFAULT_TYPES],
713 nl80211_key_default_policy);
714 if (err)
715 return err;
716
717 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
718 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
719 }
720
721 return 0;
722 }
723
724 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
725 {
726 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
727 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
728 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
729 }
730
731 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
732 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
733 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
734 }
735
736 if (info->attrs[NL80211_ATTR_KEY_IDX])
737 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
738
739 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
740 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
741
742 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
743 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
744
745 if (k->def) {
746 k->def_uni = true;
747 k->def_multi = true;
748 }
749 if (k->defmgmt)
750 k->def_multi = true;
751
752 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
753 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
754 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
755 return -EINVAL;
756 }
757
758 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
759 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
760 int err = nla_parse_nested(
761 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
762 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
763 nl80211_key_default_policy);
764 if (err)
765 return err;
766
767 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
768 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
769 }
770
771 return 0;
772 }
773
774 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
775 {
776 int err;
777
778 memset(k, 0, sizeof(*k));
779 k->idx = -1;
780 k->type = -1;
781
782 if (info->attrs[NL80211_ATTR_KEY])
783 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
784 else
785 err = nl80211_parse_key_old(info, k);
786
787 if (err)
788 return err;
789
790 if (k->def && k->defmgmt)
791 return -EINVAL;
792
793 if (k->defmgmt) {
794 if (k->def_uni || !k->def_multi)
795 return -EINVAL;
796 }
797
798 if (k->idx != -1) {
799 if (k->defmgmt) {
800 if (k->idx < 4 || k->idx > 5)
801 return -EINVAL;
802 } else if (k->def) {
803 if (k->idx < 0 || k->idx > 3)
804 return -EINVAL;
805 } else {
806 if (k->idx < 0 || k->idx > 5)
807 return -EINVAL;
808 }
809 }
810
811 return 0;
812 }
813
814 static struct cfg80211_cached_keys *
815 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
816 struct nlattr *keys, bool *no_ht)
817 {
818 struct key_parse parse;
819 struct nlattr *key;
820 struct cfg80211_cached_keys *result;
821 int rem, err, def = 0;
822
823 result = kzalloc(sizeof(*result), GFP_KERNEL);
824 if (!result)
825 return ERR_PTR(-ENOMEM);
826
827 result->def = -1;
828 result->defmgmt = -1;
829
830 nla_for_each_nested(key, keys, rem) {
831 memset(&parse, 0, sizeof(parse));
832 parse.idx = -1;
833
834 err = nl80211_parse_key_new(key, &parse);
835 if (err)
836 goto error;
837 err = -EINVAL;
838 if (!parse.p.key)
839 goto error;
840 if (parse.idx < 0 || parse.idx > 4)
841 goto error;
842 if (parse.def) {
843 if (def)
844 goto error;
845 def = 1;
846 result->def = parse.idx;
847 if (!parse.def_uni || !parse.def_multi)
848 goto error;
849 } else if (parse.defmgmt)
850 goto error;
851 err = cfg80211_validate_key_settings(rdev, &parse.p,
852 parse.idx, false, NULL);
853 if (err)
854 goto error;
855 result->params[parse.idx].cipher = parse.p.cipher;
856 result->params[parse.idx].key_len = parse.p.key_len;
857 result->params[parse.idx].key = result->data[parse.idx];
858 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
859
860 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
861 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
862 if (no_ht)
863 *no_ht = true;
864 }
865 }
866
867 return result;
868 error:
869 kfree(result);
870 return ERR_PTR(err);
871 }
872
873 static int nl80211_key_allowed(struct wireless_dev *wdev)
874 {
875 ASSERT_WDEV_LOCK(wdev);
876
877 switch (wdev->iftype) {
878 case NL80211_IFTYPE_AP:
879 case NL80211_IFTYPE_AP_VLAN:
880 case NL80211_IFTYPE_P2P_GO:
881 case NL80211_IFTYPE_MESH_POINT:
882 break;
883 case NL80211_IFTYPE_ADHOC:
884 case NL80211_IFTYPE_STATION:
885 case NL80211_IFTYPE_P2P_CLIENT:
886 if (!wdev->current_bss)
887 return -ENOLINK;
888 break;
889 case NL80211_IFTYPE_UNSPECIFIED:
890 case NL80211_IFTYPE_OCB:
891 case NL80211_IFTYPE_MONITOR:
892 case NL80211_IFTYPE_P2P_DEVICE:
893 case NL80211_IFTYPE_WDS:
894 case NUM_NL80211_IFTYPES:
895 return -EINVAL;
896 }
897
898 return 0;
899 }
900
901 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
902 struct nlattr *tb)
903 {
904 struct ieee80211_channel *chan;
905
906 if (tb == NULL)
907 return NULL;
908 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
909 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
910 return NULL;
911 return chan;
912 }
913
914 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
915 {
916 struct nlattr *nl_modes = nla_nest_start(msg, attr);
917 int i;
918
919 if (!nl_modes)
920 goto nla_put_failure;
921
922 i = 0;
923 while (ifmodes) {
924 if ((ifmodes & 1) && nla_put_flag(msg, i))
925 goto nla_put_failure;
926 ifmodes >>= 1;
927 i++;
928 }
929
930 nla_nest_end(msg, nl_modes);
931 return 0;
932
933 nla_put_failure:
934 return -ENOBUFS;
935 }
936
937 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
938 struct sk_buff *msg,
939 bool large)
940 {
941 struct nlattr *nl_combis;
942 int i, j;
943
944 nl_combis = nla_nest_start(msg,
945 NL80211_ATTR_INTERFACE_COMBINATIONS);
946 if (!nl_combis)
947 goto nla_put_failure;
948
949 for (i = 0; i < wiphy->n_iface_combinations; i++) {
950 const struct ieee80211_iface_combination *c;
951 struct nlattr *nl_combi, *nl_limits;
952
953 c = &wiphy->iface_combinations[i];
954
955 nl_combi = nla_nest_start(msg, i + 1);
956 if (!nl_combi)
957 goto nla_put_failure;
958
959 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
960 if (!nl_limits)
961 goto nla_put_failure;
962
963 for (j = 0; j < c->n_limits; j++) {
964 struct nlattr *nl_limit;
965
966 nl_limit = nla_nest_start(msg, j + 1);
967 if (!nl_limit)
968 goto nla_put_failure;
969 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
970 c->limits[j].max))
971 goto nla_put_failure;
972 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
973 c->limits[j].types))
974 goto nla_put_failure;
975 nla_nest_end(msg, nl_limit);
976 }
977
978 nla_nest_end(msg, nl_limits);
979
980 if (c->beacon_int_infra_match &&
981 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
982 goto nla_put_failure;
983 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
984 c->num_different_channels) ||
985 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
986 c->max_interfaces))
987 goto nla_put_failure;
988 if (large &&
989 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
990 c->radar_detect_widths) ||
991 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
992 c->radar_detect_regions)))
993 goto nla_put_failure;
994
995 nla_nest_end(msg, nl_combi);
996 }
997
998 nla_nest_end(msg, nl_combis);
999
1000 return 0;
1001 nla_put_failure:
1002 return -ENOBUFS;
1003 }
1004
1005 #ifdef CONFIG_PM
1006 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1007 struct sk_buff *msg)
1008 {
1009 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1010 struct nlattr *nl_tcp;
1011
1012 if (!tcp)
1013 return 0;
1014
1015 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1016 if (!nl_tcp)
1017 return -ENOBUFS;
1018
1019 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1020 tcp->data_payload_max))
1021 return -ENOBUFS;
1022
1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024 tcp->data_payload_max))
1025 return -ENOBUFS;
1026
1027 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1028 return -ENOBUFS;
1029
1030 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1031 sizeof(*tcp->tok), tcp->tok))
1032 return -ENOBUFS;
1033
1034 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1035 tcp->data_interval_max))
1036 return -ENOBUFS;
1037
1038 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1039 tcp->wake_payload_max))
1040 return -ENOBUFS;
1041
1042 nla_nest_end(msg, nl_tcp);
1043 return 0;
1044 }
1045
1046 static int nl80211_send_wowlan(struct sk_buff *msg,
1047 struct cfg80211_registered_device *rdev,
1048 bool large)
1049 {
1050 struct nlattr *nl_wowlan;
1051
1052 if (!rdev->wiphy.wowlan)
1053 return 0;
1054
1055 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1056 if (!nl_wowlan)
1057 return -ENOBUFS;
1058
1059 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1060 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1061 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1062 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1063 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1075 return -ENOBUFS;
1076
1077 if (rdev->wiphy.wowlan->n_patterns) {
1078 struct nl80211_pattern_support pat = {
1079 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1080 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1081 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1082 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1083 };
1084
1085 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1086 sizeof(pat), &pat))
1087 return -ENOBUFS;
1088 }
1089
1090 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1091 return -ENOBUFS;
1092
1093 /* TODO: send wowlan net detect */
1094
1095 nla_nest_end(msg, nl_wowlan);
1096
1097 return 0;
1098 }
1099 #endif
1100
1101 static int nl80211_send_coalesce(struct sk_buff *msg,
1102 struct cfg80211_registered_device *rdev)
1103 {
1104 struct nl80211_coalesce_rule_support rule;
1105
1106 if (!rdev->wiphy.coalesce)
1107 return 0;
1108
1109 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1110 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1111 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1112 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1113 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1114 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1115
1116 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1117 return -ENOBUFS;
1118
1119 return 0;
1120 }
1121
1122 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1123 struct ieee80211_supported_band *sband)
1124 {
1125 struct nlattr *nl_rates, *nl_rate;
1126 struct ieee80211_rate *rate;
1127 int i;
1128
1129 /* add HT info */
1130 if (sband->ht_cap.ht_supported &&
1131 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1132 sizeof(sband->ht_cap.mcs),
1133 &sband->ht_cap.mcs) ||
1134 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1135 sband->ht_cap.cap) ||
1136 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1137 sband->ht_cap.ampdu_factor) ||
1138 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1139 sband->ht_cap.ampdu_density)))
1140 return -ENOBUFS;
1141
1142 /* add VHT info */
1143 if (sband->vht_cap.vht_supported &&
1144 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1145 sizeof(sband->vht_cap.vht_mcs),
1146 &sband->vht_cap.vht_mcs) ||
1147 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1148 sband->vht_cap.cap)))
1149 return -ENOBUFS;
1150
1151 /* add bitrates */
1152 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1153 if (!nl_rates)
1154 return -ENOBUFS;
1155
1156 for (i = 0; i < sband->n_bitrates; i++) {
1157 nl_rate = nla_nest_start(msg, i);
1158 if (!nl_rate)
1159 return -ENOBUFS;
1160
1161 rate = &sband->bitrates[i];
1162 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1163 rate->bitrate))
1164 return -ENOBUFS;
1165 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1166 nla_put_flag(msg,
1167 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1168 return -ENOBUFS;
1169
1170 nla_nest_end(msg, nl_rate);
1171 }
1172
1173 nla_nest_end(msg, nl_rates);
1174
1175 return 0;
1176 }
1177
1178 static int
1179 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1180 const struct ieee80211_txrx_stypes *mgmt_stypes)
1181 {
1182 u16 stypes;
1183 struct nlattr *nl_ftypes, *nl_ifs;
1184 enum nl80211_iftype ift;
1185 int i;
1186
1187 if (!mgmt_stypes)
1188 return 0;
1189
1190 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1191 if (!nl_ifs)
1192 return -ENOBUFS;
1193
1194 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1195 nl_ftypes = nla_nest_start(msg, ift);
1196 if (!nl_ftypes)
1197 return -ENOBUFS;
1198 i = 0;
1199 stypes = mgmt_stypes[ift].tx;
1200 while (stypes) {
1201 if ((stypes & 1) &&
1202 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1203 (i << 4) | IEEE80211_FTYPE_MGMT))
1204 return -ENOBUFS;
1205 stypes >>= 1;
1206 i++;
1207 }
1208 nla_nest_end(msg, nl_ftypes);
1209 }
1210
1211 nla_nest_end(msg, nl_ifs);
1212
1213 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1214 if (!nl_ifs)
1215 return -ENOBUFS;
1216
1217 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1218 nl_ftypes = nla_nest_start(msg, ift);
1219 if (!nl_ftypes)
1220 return -ENOBUFS;
1221 i = 0;
1222 stypes = mgmt_stypes[ift].rx;
1223 while (stypes) {
1224 if ((stypes & 1) &&
1225 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1226 (i << 4) | IEEE80211_FTYPE_MGMT))
1227 return -ENOBUFS;
1228 stypes >>= 1;
1229 i++;
1230 }
1231 nla_nest_end(msg, nl_ftypes);
1232 }
1233 nla_nest_end(msg, nl_ifs);
1234
1235 return 0;
1236 }
1237
1238 struct nl80211_dump_wiphy_state {
1239 s64 filter_wiphy;
1240 long start;
1241 long split_start, band_start, chan_start;
1242 bool split;
1243 };
1244
1245 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1246 enum nl80211_commands cmd,
1247 struct sk_buff *msg, u32 portid, u32 seq,
1248 int flags, struct nl80211_dump_wiphy_state *state)
1249 {
1250 void *hdr;
1251 struct nlattr *nl_bands, *nl_band;
1252 struct nlattr *nl_freqs, *nl_freq;
1253 struct nlattr *nl_cmds;
1254 enum ieee80211_band band;
1255 struct ieee80211_channel *chan;
1256 int i;
1257 const struct ieee80211_txrx_stypes *mgmt_stypes =
1258 rdev->wiphy.mgmt_stypes;
1259 u32 features;
1260
1261 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1262 if (!hdr)
1263 return -ENOBUFS;
1264
1265 if (WARN_ON(!state))
1266 return -EINVAL;
1267
1268 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1269 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1270 wiphy_name(&rdev->wiphy)) ||
1271 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1272 cfg80211_rdev_list_generation))
1273 goto nla_put_failure;
1274
1275 if (cmd != NL80211_CMD_NEW_WIPHY)
1276 goto finish;
1277
1278 switch (state->split_start) {
1279 case 0:
1280 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1281 rdev->wiphy.retry_short) ||
1282 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1283 rdev->wiphy.retry_long) ||
1284 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1285 rdev->wiphy.frag_threshold) ||
1286 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1287 rdev->wiphy.rts_threshold) ||
1288 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1289 rdev->wiphy.coverage_class) ||
1290 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1291 rdev->wiphy.max_scan_ssids) ||
1292 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1293 rdev->wiphy.max_sched_scan_ssids) ||
1294 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1295 rdev->wiphy.max_scan_ie_len) ||
1296 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1297 rdev->wiphy.max_sched_scan_ie_len) ||
1298 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1299 rdev->wiphy.max_match_sets))
1300 goto nla_put_failure;
1301
1302 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1303 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1304 goto nla_put_failure;
1305 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1306 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1307 goto nla_put_failure;
1308 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1309 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1310 goto nla_put_failure;
1311 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1312 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1313 goto nla_put_failure;
1314 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1315 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1316 goto nla_put_failure;
1317 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1318 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1319 goto nla_put_failure;
1320 state->split_start++;
1321 if (state->split)
1322 break;
1323 case 1:
1324 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1325 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1326 rdev->wiphy.cipher_suites))
1327 goto nla_put_failure;
1328
1329 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1330 rdev->wiphy.max_num_pmkids))
1331 goto nla_put_failure;
1332
1333 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1334 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1335 goto nla_put_failure;
1336
1337 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1338 rdev->wiphy.available_antennas_tx) ||
1339 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1340 rdev->wiphy.available_antennas_rx))
1341 goto nla_put_failure;
1342
1343 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1344 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1345 rdev->wiphy.probe_resp_offload))
1346 goto nla_put_failure;
1347
1348 if ((rdev->wiphy.available_antennas_tx ||
1349 rdev->wiphy.available_antennas_rx) &&
1350 rdev->ops->get_antenna) {
1351 u32 tx_ant = 0, rx_ant = 0;
1352 int res;
1353 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1354 if (!res) {
1355 if (nla_put_u32(msg,
1356 NL80211_ATTR_WIPHY_ANTENNA_TX,
1357 tx_ant) ||
1358 nla_put_u32(msg,
1359 NL80211_ATTR_WIPHY_ANTENNA_RX,
1360 rx_ant))
1361 goto nla_put_failure;
1362 }
1363 }
1364
1365 state->split_start++;
1366 if (state->split)
1367 break;
1368 case 2:
1369 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1370 rdev->wiphy.interface_modes))
1371 goto nla_put_failure;
1372 state->split_start++;
1373 if (state->split)
1374 break;
1375 case 3:
1376 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1377 if (!nl_bands)
1378 goto nla_put_failure;
1379
1380 for (band = state->band_start;
1381 band < IEEE80211_NUM_BANDS; band++) {
1382 struct ieee80211_supported_band *sband;
1383
1384 sband = rdev->wiphy.bands[band];
1385
1386 if (!sband)
1387 continue;
1388
1389 nl_band = nla_nest_start(msg, band);
1390 if (!nl_band)
1391 goto nla_put_failure;
1392
1393 switch (state->chan_start) {
1394 case 0:
1395 if (nl80211_send_band_rateinfo(msg, sband))
1396 goto nla_put_failure;
1397 state->chan_start++;
1398 if (state->split)
1399 break;
1400 default:
1401 /* add frequencies */
1402 nl_freqs = nla_nest_start(
1403 msg, NL80211_BAND_ATTR_FREQS);
1404 if (!nl_freqs)
1405 goto nla_put_failure;
1406
1407 for (i = state->chan_start - 1;
1408 i < sband->n_channels;
1409 i++) {
1410 nl_freq = nla_nest_start(msg, i);
1411 if (!nl_freq)
1412 goto nla_put_failure;
1413
1414 chan = &sband->channels[i];
1415
1416 if (nl80211_msg_put_channel(
1417 msg, chan,
1418 state->split))
1419 goto nla_put_failure;
1420
1421 nla_nest_end(msg, nl_freq);
1422 if (state->split)
1423 break;
1424 }
1425 if (i < sband->n_channels)
1426 state->chan_start = i + 2;
1427 else
1428 state->chan_start = 0;
1429 nla_nest_end(msg, nl_freqs);
1430 }
1431
1432 nla_nest_end(msg, nl_band);
1433
1434 if (state->split) {
1435 /* start again here */
1436 if (state->chan_start)
1437 band--;
1438 break;
1439 }
1440 }
1441 nla_nest_end(msg, nl_bands);
1442
1443 if (band < IEEE80211_NUM_BANDS)
1444 state->band_start = band + 1;
1445 else
1446 state->band_start = 0;
1447
1448 /* if bands & channels are done, continue outside */
1449 if (state->band_start == 0 && state->chan_start == 0)
1450 state->split_start++;
1451 if (state->split)
1452 break;
1453 case 4:
1454 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1455 if (!nl_cmds)
1456 goto nla_put_failure;
1457
1458 i = 0;
1459 #define CMD(op, n) \
1460 do { \
1461 if (rdev->ops->op) { \
1462 i++; \
1463 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1464 goto nla_put_failure; \
1465 } \
1466 } while (0)
1467
1468 CMD(add_virtual_intf, NEW_INTERFACE);
1469 CMD(change_virtual_intf, SET_INTERFACE);
1470 CMD(add_key, NEW_KEY);
1471 CMD(start_ap, START_AP);
1472 CMD(add_station, NEW_STATION);
1473 CMD(add_mpath, NEW_MPATH);
1474 CMD(update_mesh_config, SET_MESH_CONFIG);
1475 CMD(change_bss, SET_BSS);
1476 CMD(auth, AUTHENTICATE);
1477 CMD(assoc, ASSOCIATE);
1478 CMD(deauth, DEAUTHENTICATE);
1479 CMD(disassoc, DISASSOCIATE);
1480 CMD(join_ibss, JOIN_IBSS);
1481 CMD(join_mesh, JOIN_MESH);
1482 CMD(set_pmksa, SET_PMKSA);
1483 CMD(del_pmksa, DEL_PMKSA);
1484 CMD(flush_pmksa, FLUSH_PMKSA);
1485 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1486 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1487 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1488 CMD(mgmt_tx, FRAME);
1489 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1490 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1491 i++;
1492 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1493 goto nla_put_failure;
1494 }
1495 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1496 rdev->ops->join_mesh) {
1497 i++;
1498 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1499 goto nla_put_failure;
1500 }
1501 CMD(set_wds_peer, SET_WDS_PEER);
1502 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1503 CMD(tdls_mgmt, TDLS_MGMT);
1504 CMD(tdls_oper, TDLS_OPER);
1505 }
1506 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1507 CMD(sched_scan_start, START_SCHED_SCAN);
1508 CMD(probe_client, PROBE_CLIENT);
1509 CMD(set_noack_map, SET_NOACK_MAP);
1510 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1511 i++;
1512 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1513 goto nla_put_failure;
1514 }
1515 CMD(start_p2p_device, START_P2P_DEVICE);
1516 CMD(set_mcast_rate, SET_MCAST_RATE);
1517 #ifdef CONFIG_NL80211_TESTMODE
1518 CMD(testmode_cmd, TESTMODE);
1519 #endif
1520 if (state->split) {
1521 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1522 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1523 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1524 CMD(channel_switch, CHANNEL_SWITCH);
1525 CMD(set_qos_map, SET_QOS_MAP);
1526 if (rdev->wiphy.features &
1527 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1528 CMD(add_tx_ts, ADD_TX_TS);
1529 }
1530 /* add into the if now */
1531 #undef CMD
1532
1533 if (rdev->ops->connect || rdev->ops->auth) {
1534 i++;
1535 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1536 goto nla_put_failure;
1537 }
1538
1539 if (rdev->ops->disconnect || rdev->ops->deauth) {
1540 i++;
1541 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1542 goto nla_put_failure;
1543 }
1544
1545 nla_nest_end(msg, nl_cmds);
1546 state->split_start++;
1547 if (state->split)
1548 break;
1549 case 5:
1550 if (rdev->ops->remain_on_channel &&
1551 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1552 nla_put_u32(msg,
1553 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1554 rdev->wiphy.max_remain_on_channel_duration))
1555 goto nla_put_failure;
1556
1557 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1558 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1559 goto nla_put_failure;
1560
1561 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1562 goto nla_put_failure;
1563 state->split_start++;
1564 if (state->split)
1565 break;
1566 case 6:
1567 #ifdef CONFIG_PM
1568 if (nl80211_send_wowlan(msg, rdev, state->split))
1569 goto nla_put_failure;
1570 state->split_start++;
1571 if (state->split)
1572 break;
1573 #else
1574 state->split_start++;
1575 #endif
1576 case 7:
1577 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1578 rdev->wiphy.software_iftypes))
1579 goto nla_put_failure;
1580
1581 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1582 state->split))
1583 goto nla_put_failure;
1584
1585 state->split_start++;
1586 if (state->split)
1587 break;
1588 case 8:
1589 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1590 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1591 rdev->wiphy.ap_sme_capa))
1592 goto nla_put_failure;
1593
1594 features = rdev->wiphy.features;
1595 /*
1596 * We can only add the per-channel limit information if the
1597 * dump is split, otherwise it makes it too big. Therefore
1598 * only advertise it in that case.
1599 */
1600 if (state->split)
1601 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1602 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1603 goto nla_put_failure;
1604
1605 if (rdev->wiphy.ht_capa_mod_mask &&
1606 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1607 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1608 rdev->wiphy.ht_capa_mod_mask))
1609 goto nla_put_failure;
1610
1611 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1612 rdev->wiphy.max_acl_mac_addrs &&
1613 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1614 rdev->wiphy.max_acl_mac_addrs))
1615 goto nla_put_failure;
1616
1617 /*
1618 * Any information below this point is only available to
1619 * applications that can deal with it being split. This
1620 * helps ensure that newly added capabilities don't break
1621 * older tools by overrunning their buffers.
1622 *
1623 * We still increment split_start so that in the split
1624 * case we'll continue with more data in the next round,
1625 * but break unconditionally so unsplit data stops here.
1626 */
1627 state->split_start++;
1628 break;
1629 case 9:
1630 if (rdev->wiphy.extended_capabilities &&
1631 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1632 rdev->wiphy.extended_capabilities_len,
1633 rdev->wiphy.extended_capabilities) ||
1634 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1635 rdev->wiphy.extended_capabilities_len,
1636 rdev->wiphy.extended_capabilities_mask)))
1637 goto nla_put_failure;
1638
1639 if (rdev->wiphy.vht_capa_mod_mask &&
1640 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1641 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1642 rdev->wiphy.vht_capa_mod_mask))
1643 goto nla_put_failure;
1644
1645 state->split_start++;
1646 break;
1647 case 10:
1648 if (nl80211_send_coalesce(msg, rdev))
1649 goto nla_put_failure;
1650
1651 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1652 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1653 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1654 goto nla_put_failure;
1655
1656 if (rdev->wiphy.max_ap_assoc_sta &&
1657 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1658 rdev->wiphy.max_ap_assoc_sta))
1659 goto nla_put_failure;
1660
1661 state->split_start++;
1662 break;
1663 case 11:
1664 if (rdev->wiphy.n_vendor_commands) {
1665 const struct nl80211_vendor_cmd_info *info;
1666 struct nlattr *nested;
1667
1668 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1669 if (!nested)
1670 goto nla_put_failure;
1671
1672 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1673 info = &rdev->wiphy.vendor_commands[i].info;
1674 if (nla_put(msg, i + 1, sizeof(*info), info))
1675 goto nla_put_failure;
1676 }
1677 nla_nest_end(msg, nested);
1678 }
1679
1680 if (rdev->wiphy.n_vendor_events) {
1681 const struct nl80211_vendor_cmd_info *info;
1682 struct nlattr *nested;
1683
1684 nested = nla_nest_start(msg,
1685 NL80211_ATTR_VENDOR_EVENTS);
1686 if (!nested)
1687 goto nla_put_failure;
1688
1689 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1690 info = &rdev->wiphy.vendor_events[i];
1691 if (nla_put(msg, i + 1, sizeof(*info), info))
1692 goto nla_put_failure;
1693 }
1694 nla_nest_end(msg, nested);
1695 }
1696 state->split_start++;
1697 break;
1698 case 12:
1699 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1700 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1701 rdev->wiphy.max_num_csa_counters))
1702 goto nla_put_failure;
1703
1704 /* done */
1705 state->split_start = 0;
1706 break;
1707 }
1708 finish:
1709 return genlmsg_end(msg, hdr);
1710
1711 nla_put_failure:
1712 genlmsg_cancel(msg, hdr);
1713 return -EMSGSIZE;
1714 }
1715
1716 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1717 struct netlink_callback *cb,
1718 struct nl80211_dump_wiphy_state *state)
1719 {
1720 struct nlattr **tb = nl80211_fam.attrbuf;
1721 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1722 tb, nl80211_fam.maxattr, nl80211_policy);
1723 /* ignore parse errors for backward compatibility */
1724 if (ret)
1725 return 0;
1726
1727 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1728 if (tb[NL80211_ATTR_WIPHY])
1729 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1730 if (tb[NL80211_ATTR_WDEV])
1731 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1732 if (tb[NL80211_ATTR_IFINDEX]) {
1733 struct net_device *netdev;
1734 struct cfg80211_registered_device *rdev;
1735 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1736
1737 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1738 if (!netdev)
1739 return -ENODEV;
1740 if (netdev->ieee80211_ptr) {
1741 rdev = wiphy_to_rdev(
1742 netdev->ieee80211_ptr->wiphy);
1743 state->filter_wiphy = rdev->wiphy_idx;
1744 }
1745 }
1746
1747 return 0;
1748 }
1749
1750 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1751 {
1752 int idx = 0, ret;
1753 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1754 struct cfg80211_registered_device *rdev;
1755
1756 rtnl_lock();
1757 if (!state) {
1758 state = kzalloc(sizeof(*state), GFP_KERNEL);
1759 if (!state) {
1760 rtnl_unlock();
1761 return -ENOMEM;
1762 }
1763 state->filter_wiphy = -1;
1764 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1765 if (ret) {
1766 kfree(state);
1767 rtnl_unlock();
1768 return ret;
1769 }
1770 cb->args[0] = (long)state;
1771 }
1772
1773 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1774 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1775 continue;
1776 if (++idx <= state->start)
1777 continue;
1778 if (state->filter_wiphy != -1 &&
1779 state->filter_wiphy != rdev->wiphy_idx)
1780 continue;
1781 /* attempt to fit multiple wiphy data chunks into the skb */
1782 do {
1783 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1784 skb,
1785 NETLINK_CB(cb->skb).portid,
1786 cb->nlh->nlmsg_seq,
1787 NLM_F_MULTI, state);
1788 if (ret < 0) {
1789 /*
1790 * If sending the wiphy data didn't fit (ENOBUFS
1791 * or EMSGSIZE returned), this SKB is still
1792 * empty (so it's not too big because another
1793 * wiphy dataset is already in the skb) and
1794 * we've not tried to adjust the dump allocation
1795 * yet ... then adjust the alloc size to be
1796 * bigger, and return 1 but with the empty skb.
1797 * This results in an empty message being RX'ed
1798 * in userspace, but that is ignored.
1799 *
1800 * We can then retry with the larger buffer.
1801 */
1802 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1803 !skb->len && !state->split &&
1804 cb->min_dump_alloc < 4096) {
1805 cb->min_dump_alloc = 4096;
1806 state->split_start = 0;
1807 rtnl_unlock();
1808 return 1;
1809 }
1810 idx--;
1811 break;
1812 }
1813 } while (state->split_start > 0);
1814 break;
1815 }
1816 rtnl_unlock();
1817
1818 state->start = idx;
1819
1820 return skb->len;
1821 }
1822
1823 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1824 {
1825 kfree((void *)cb->args[0]);
1826 return 0;
1827 }
1828
1829 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1830 {
1831 struct sk_buff *msg;
1832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1833 struct nl80211_dump_wiphy_state state = {};
1834
1835 msg = nlmsg_new(4096, GFP_KERNEL);
1836 if (!msg)
1837 return -ENOMEM;
1838
1839 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1840 info->snd_portid, info->snd_seq, 0,
1841 &state) < 0) {
1842 nlmsg_free(msg);
1843 return -ENOBUFS;
1844 }
1845
1846 return genlmsg_reply(msg, info);
1847 }
1848
1849 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1850 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1851 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1852 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1853 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1854 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1855 };
1856
1857 static int parse_txq_params(struct nlattr *tb[],
1858 struct ieee80211_txq_params *txq_params)
1859 {
1860 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1861 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1862 !tb[NL80211_TXQ_ATTR_AIFS])
1863 return -EINVAL;
1864
1865 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1866 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1867 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1868 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1869 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1870
1871 if (txq_params->ac >= NL80211_NUM_ACS)
1872 return -EINVAL;
1873
1874 return 0;
1875 }
1876
1877 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1878 {
1879 /*
1880 * You can only set the channel explicitly for WDS interfaces,
1881 * all others have their channel managed via their respective
1882 * "establish a connection" command (connect, join, ...)
1883 *
1884 * For AP/GO and mesh mode, the channel can be set with the
1885 * channel userspace API, but is only stored and passed to the
1886 * low-level driver when the AP starts or the mesh is joined.
1887 * This is for backward compatibility, userspace can also give
1888 * the channel in the start-ap or join-mesh commands instead.
1889 *
1890 * Monitors are special as they are normally slaved to
1891 * whatever else is going on, so they have their own special
1892 * operation to set the monitor channel if possible.
1893 */
1894 return !wdev ||
1895 wdev->iftype == NL80211_IFTYPE_AP ||
1896 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1897 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1898 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1899 }
1900
1901 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1902 struct genl_info *info,
1903 struct cfg80211_chan_def *chandef)
1904 {
1905 u32 control_freq;
1906
1907 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1908 return -EINVAL;
1909
1910 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1911
1912 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1913 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1914 chandef->center_freq1 = control_freq;
1915 chandef->center_freq2 = 0;
1916
1917 /* Primary channel not allowed */
1918 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1919 return -EINVAL;
1920
1921 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1922 enum nl80211_channel_type chantype;
1923
1924 chantype = nla_get_u32(
1925 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1926
1927 switch (chantype) {
1928 case NL80211_CHAN_NO_HT:
1929 case NL80211_CHAN_HT20:
1930 case NL80211_CHAN_HT40PLUS:
1931 case NL80211_CHAN_HT40MINUS:
1932 cfg80211_chandef_create(chandef, chandef->chan,
1933 chantype);
1934 break;
1935 default:
1936 return -EINVAL;
1937 }
1938 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1939 chandef->width =
1940 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1941 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1942 chandef->center_freq1 =
1943 nla_get_u32(
1944 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1945 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1946 chandef->center_freq2 =
1947 nla_get_u32(
1948 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1949 }
1950
1951 if (!cfg80211_chandef_valid(chandef))
1952 return -EINVAL;
1953
1954 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1955 IEEE80211_CHAN_DISABLED))
1956 return -EINVAL;
1957
1958 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1959 chandef->width == NL80211_CHAN_WIDTH_10) &&
1960 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1961 return -EINVAL;
1962
1963 return 0;
1964 }
1965
1966 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1967 struct net_device *dev,
1968 struct genl_info *info)
1969 {
1970 struct cfg80211_chan_def chandef;
1971 int result;
1972 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1973 struct wireless_dev *wdev = NULL;
1974
1975 if (dev)
1976 wdev = dev->ieee80211_ptr;
1977 if (!nl80211_can_set_dev_channel(wdev))
1978 return -EOPNOTSUPP;
1979 if (wdev)
1980 iftype = wdev->iftype;
1981
1982 result = nl80211_parse_chandef(rdev, info, &chandef);
1983 if (result)
1984 return result;
1985
1986 switch (iftype) {
1987 case NL80211_IFTYPE_AP:
1988 case NL80211_IFTYPE_P2P_GO:
1989 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1990 result = -EINVAL;
1991 break;
1992 }
1993 if (wdev->beacon_interval) {
1994 if (!dev || !rdev->ops->set_ap_chanwidth ||
1995 !(rdev->wiphy.features &
1996 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1997 result = -EBUSY;
1998 break;
1999 }
2000
2001 /* Only allow dynamic channel width changes */
2002 if (chandef.chan != wdev->preset_chandef.chan) {
2003 result = -EBUSY;
2004 break;
2005 }
2006 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2007 if (result)
2008 break;
2009 }
2010 wdev->preset_chandef = chandef;
2011 result = 0;
2012 break;
2013 case NL80211_IFTYPE_MESH_POINT:
2014 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2015 break;
2016 case NL80211_IFTYPE_MONITOR:
2017 result = cfg80211_set_monitor_channel(rdev, &chandef);
2018 break;
2019 default:
2020 result = -EINVAL;
2021 }
2022
2023 return result;
2024 }
2025
2026 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2027 {
2028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2029 struct net_device *netdev = info->user_ptr[1];
2030
2031 return __nl80211_set_channel(rdev, netdev, info);
2032 }
2033
2034 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2035 {
2036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2037 struct net_device *dev = info->user_ptr[1];
2038 struct wireless_dev *wdev = dev->ieee80211_ptr;
2039 const u8 *bssid;
2040
2041 if (!info->attrs[NL80211_ATTR_MAC])
2042 return -EINVAL;
2043
2044 if (netif_running(dev))
2045 return -EBUSY;
2046
2047 if (!rdev->ops->set_wds_peer)
2048 return -EOPNOTSUPP;
2049
2050 if (wdev->iftype != NL80211_IFTYPE_WDS)
2051 return -EOPNOTSUPP;
2052
2053 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2054 return rdev_set_wds_peer(rdev, dev, bssid);
2055 }
2056
2057
2058 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2059 {
2060 struct cfg80211_registered_device *rdev;
2061 struct net_device *netdev = NULL;
2062 struct wireless_dev *wdev;
2063 int result = 0, rem_txq_params = 0;
2064 struct nlattr *nl_txq_params;
2065 u32 changed;
2066 u8 retry_short = 0, retry_long = 0;
2067 u32 frag_threshold = 0, rts_threshold = 0;
2068 u8 coverage_class = 0;
2069
2070 ASSERT_RTNL();
2071
2072 /*
2073 * Try to find the wiphy and netdev. Normally this
2074 * function shouldn't need the netdev, but this is
2075 * done for backward compatibility -- previously
2076 * setting the channel was done per wiphy, but now
2077 * it is per netdev. Previous userland like hostapd
2078 * also passed a netdev to set_wiphy, so that it is
2079 * possible to let that go to the right netdev!
2080 */
2081
2082 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2083 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2084
2085 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2086 if (netdev && netdev->ieee80211_ptr)
2087 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2088 else
2089 netdev = NULL;
2090 }
2091
2092 if (!netdev) {
2093 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2094 info->attrs);
2095 if (IS_ERR(rdev))
2096 return PTR_ERR(rdev);
2097 wdev = NULL;
2098 netdev = NULL;
2099 result = 0;
2100 } else
2101 wdev = netdev->ieee80211_ptr;
2102
2103 /*
2104 * end workaround code, by now the rdev is available
2105 * and locked, and wdev may or may not be NULL.
2106 */
2107
2108 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2109 result = cfg80211_dev_rename(
2110 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2111
2112 if (result)
2113 return result;
2114
2115 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2116 struct ieee80211_txq_params txq_params;
2117 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2118
2119 if (!rdev->ops->set_txq_params)
2120 return -EOPNOTSUPP;
2121
2122 if (!netdev)
2123 return -EINVAL;
2124
2125 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2126 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2127 return -EINVAL;
2128
2129 if (!netif_running(netdev))
2130 return -ENETDOWN;
2131
2132 nla_for_each_nested(nl_txq_params,
2133 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2134 rem_txq_params) {
2135 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2136 nla_data(nl_txq_params),
2137 nla_len(nl_txq_params),
2138 txq_params_policy);
2139 if (result)
2140 return result;
2141 result = parse_txq_params(tb, &txq_params);
2142 if (result)
2143 return result;
2144
2145 result = rdev_set_txq_params(rdev, netdev,
2146 &txq_params);
2147 if (result)
2148 return result;
2149 }
2150 }
2151
2152 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2153 result = __nl80211_set_channel(
2154 rdev,
2155 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2156 info);
2157 if (result)
2158 return result;
2159 }
2160
2161 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2162 struct wireless_dev *txp_wdev = wdev;
2163 enum nl80211_tx_power_setting type;
2164 int idx, mbm = 0;
2165
2166 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2167 txp_wdev = NULL;
2168
2169 if (!rdev->ops->set_tx_power)
2170 return -EOPNOTSUPP;
2171
2172 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2173 type = nla_get_u32(info->attrs[idx]);
2174
2175 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2176 (type != NL80211_TX_POWER_AUTOMATIC))
2177 return -EINVAL;
2178
2179 if (type != NL80211_TX_POWER_AUTOMATIC) {
2180 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2181 mbm = nla_get_u32(info->attrs[idx]);
2182 }
2183
2184 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2185 if (result)
2186 return result;
2187 }
2188
2189 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2190 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2191 u32 tx_ant, rx_ant;
2192 if ((!rdev->wiphy.available_antennas_tx &&
2193 !rdev->wiphy.available_antennas_rx) ||
2194 !rdev->ops->set_antenna)
2195 return -EOPNOTSUPP;
2196
2197 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2198 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2199
2200 /* reject antenna configurations which don't match the
2201 * available antenna masks, except for the "all" mask */
2202 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2203 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2204 return -EINVAL;
2205
2206 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2207 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2208
2209 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2210 if (result)
2211 return result;
2212 }
2213
2214 changed = 0;
2215
2216 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2217 retry_short = nla_get_u8(
2218 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2219 if (retry_short == 0)
2220 return -EINVAL;
2221
2222 changed |= WIPHY_PARAM_RETRY_SHORT;
2223 }
2224
2225 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2226 retry_long = nla_get_u8(
2227 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2228 if (retry_long == 0)
2229 return -EINVAL;
2230
2231 changed |= WIPHY_PARAM_RETRY_LONG;
2232 }
2233
2234 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2235 frag_threshold = nla_get_u32(
2236 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2237 if (frag_threshold < 256)
2238 return -EINVAL;
2239
2240 if (frag_threshold != (u32) -1) {
2241 /*
2242 * Fragments (apart from the last one) are required to
2243 * have even length. Make the fragmentation code
2244 * simpler by stripping LSB should someone try to use
2245 * odd threshold value.
2246 */
2247 frag_threshold &= ~0x1;
2248 }
2249 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2250 }
2251
2252 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2253 rts_threshold = nla_get_u32(
2254 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2255 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2256 }
2257
2258 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2259 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2260 return -EINVAL;
2261
2262 coverage_class = nla_get_u8(
2263 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2264 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2265 }
2266
2267 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2268 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2269 return -EOPNOTSUPP;
2270
2271 changed |= WIPHY_PARAM_DYN_ACK;
2272 }
2273
2274 if (changed) {
2275 u8 old_retry_short, old_retry_long;
2276 u32 old_frag_threshold, old_rts_threshold;
2277 u8 old_coverage_class;
2278
2279 if (!rdev->ops->set_wiphy_params)
2280 return -EOPNOTSUPP;
2281
2282 old_retry_short = rdev->wiphy.retry_short;
2283 old_retry_long = rdev->wiphy.retry_long;
2284 old_frag_threshold = rdev->wiphy.frag_threshold;
2285 old_rts_threshold = rdev->wiphy.rts_threshold;
2286 old_coverage_class = rdev->wiphy.coverage_class;
2287
2288 if (changed & WIPHY_PARAM_RETRY_SHORT)
2289 rdev->wiphy.retry_short = retry_short;
2290 if (changed & WIPHY_PARAM_RETRY_LONG)
2291 rdev->wiphy.retry_long = retry_long;
2292 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2293 rdev->wiphy.frag_threshold = frag_threshold;
2294 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2295 rdev->wiphy.rts_threshold = rts_threshold;
2296 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2297 rdev->wiphy.coverage_class = coverage_class;
2298
2299 result = rdev_set_wiphy_params(rdev, changed);
2300 if (result) {
2301 rdev->wiphy.retry_short = old_retry_short;
2302 rdev->wiphy.retry_long = old_retry_long;
2303 rdev->wiphy.frag_threshold = old_frag_threshold;
2304 rdev->wiphy.rts_threshold = old_rts_threshold;
2305 rdev->wiphy.coverage_class = old_coverage_class;
2306 }
2307 }
2308 return 0;
2309 }
2310
2311 static inline u64 wdev_id(struct wireless_dev *wdev)
2312 {
2313 return (u64)wdev->identifier |
2314 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2315 }
2316
2317 static int nl80211_send_chandef(struct sk_buff *msg,
2318 const struct cfg80211_chan_def *chandef)
2319 {
2320 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2321 return -EINVAL;
2322
2323 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2324 chandef->chan->center_freq))
2325 return -ENOBUFS;
2326 switch (chandef->width) {
2327 case NL80211_CHAN_WIDTH_20_NOHT:
2328 case NL80211_CHAN_WIDTH_20:
2329 case NL80211_CHAN_WIDTH_40:
2330 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2331 cfg80211_get_chandef_type(chandef)))
2332 return -ENOBUFS;
2333 break;
2334 default:
2335 break;
2336 }
2337 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2338 return -ENOBUFS;
2339 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2340 return -ENOBUFS;
2341 if (chandef->center_freq2 &&
2342 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2343 return -ENOBUFS;
2344 return 0;
2345 }
2346
2347 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2348 struct cfg80211_registered_device *rdev,
2349 struct wireless_dev *wdev, bool removal)
2350 {
2351 struct net_device *dev = wdev->netdev;
2352 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2353 void *hdr;
2354
2355 if (removal)
2356 cmd = NL80211_CMD_DEL_INTERFACE;
2357
2358 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2359 if (!hdr)
2360 return -1;
2361
2362 if (dev &&
2363 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2364 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2365 goto nla_put_failure;
2366
2367 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2368 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2369 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2370 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2371 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2372 rdev->devlist_generation ^
2373 (cfg80211_rdev_list_generation << 2)))
2374 goto nla_put_failure;
2375
2376 if (rdev->ops->get_channel) {
2377 int ret;
2378 struct cfg80211_chan_def chandef;
2379
2380 ret = rdev_get_channel(rdev, wdev, &chandef);
2381 if (ret == 0) {
2382 if (nl80211_send_chandef(msg, &chandef))
2383 goto nla_put_failure;
2384 }
2385 }
2386
2387 if (wdev->ssid_len) {
2388 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2389 goto nla_put_failure;
2390 }
2391
2392 return genlmsg_end(msg, hdr);
2393
2394 nla_put_failure:
2395 genlmsg_cancel(msg, hdr);
2396 return -EMSGSIZE;
2397 }
2398
2399 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2400 {
2401 int wp_idx = 0;
2402 int if_idx = 0;
2403 int wp_start = cb->args[0];
2404 int if_start = cb->args[1];
2405 struct cfg80211_registered_device *rdev;
2406 struct wireless_dev *wdev;
2407
2408 rtnl_lock();
2409 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2410 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2411 continue;
2412 if (wp_idx < wp_start) {
2413 wp_idx++;
2414 continue;
2415 }
2416 if_idx = 0;
2417
2418 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2419 if (if_idx < if_start) {
2420 if_idx++;
2421 continue;
2422 }
2423 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2424 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2425 rdev, wdev, false) < 0) {
2426 goto out;
2427 }
2428 if_idx++;
2429 }
2430
2431 wp_idx++;
2432 }
2433 out:
2434 rtnl_unlock();
2435
2436 cb->args[0] = wp_idx;
2437 cb->args[1] = if_idx;
2438
2439 return skb->len;
2440 }
2441
2442 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2443 {
2444 struct sk_buff *msg;
2445 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2446 struct wireless_dev *wdev = info->user_ptr[1];
2447
2448 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2449 if (!msg)
2450 return -ENOMEM;
2451
2452 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2453 rdev, wdev, false) < 0) {
2454 nlmsg_free(msg);
2455 return -ENOBUFS;
2456 }
2457
2458 return genlmsg_reply(msg, info);
2459 }
2460
2461 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2462 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2463 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2464 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2465 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2466 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2467 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2468 };
2469
2470 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2471 {
2472 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2473 int flag;
2474
2475 *mntrflags = 0;
2476
2477 if (!nla)
2478 return -EINVAL;
2479
2480 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2481 nla, mntr_flags_policy))
2482 return -EINVAL;
2483
2484 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2485 if (flags[flag])
2486 *mntrflags |= (1<<flag);
2487
2488 return 0;
2489 }
2490
2491 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2492 struct net_device *netdev, u8 use_4addr,
2493 enum nl80211_iftype iftype)
2494 {
2495 if (!use_4addr) {
2496 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2497 return -EBUSY;
2498 return 0;
2499 }
2500
2501 switch (iftype) {
2502 case NL80211_IFTYPE_AP_VLAN:
2503 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2504 return 0;
2505 break;
2506 case NL80211_IFTYPE_STATION:
2507 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2508 return 0;
2509 break;
2510 default:
2511 break;
2512 }
2513
2514 return -EOPNOTSUPP;
2515 }
2516
2517 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2518 {
2519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2520 struct vif_params params;
2521 int err;
2522 enum nl80211_iftype otype, ntype;
2523 struct net_device *dev = info->user_ptr[1];
2524 u32 _flags, *flags = NULL;
2525 bool change = false;
2526
2527 memset(&params, 0, sizeof(params));
2528
2529 otype = ntype = dev->ieee80211_ptr->iftype;
2530
2531 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2532 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2533 if (otype != ntype)
2534 change = true;
2535 if (ntype > NL80211_IFTYPE_MAX)
2536 return -EINVAL;
2537 }
2538
2539 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2540 struct wireless_dev *wdev = dev->ieee80211_ptr;
2541
2542 if (ntype != NL80211_IFTYPE_MESH_POINT)
2543 return -EINVAL;
2544 if (netif_running(dev))
2545 return -EBUSY;
2546
2547 wdev_lock(wdev);
2548 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2549 IEEE80211_MAX_MESH_ID_LEN);
2550 wdev->mesh_id_up_len =
2551 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2552 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2553 wdev->mesh_id_up_len);
2554 wdev_unlock(wdev);
2555 }
2556
2557 if (info->attrs[NL80211_ATTR_4ADDR]) {
2558 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2559 change = true;
2560 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2561 if (err)
2562 return err;
2563 } else {
2564 params.use_4addr = -1;
2565 }
2566
2567 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2568 if (ntype != NL80211_IFTYPE_MONITOR)
2569 return -EINVAL;
2570 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2571 &_flags);
2572 if (err)
2573 return err;
2574
2575 flags = &_flags;
2576 change = true;
2577 }
2578
2579 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2580 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2581 return -EOPNOTSUPP;
2582
2583 if (change)
2584 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2585 else
2586 err = 0;
2587
2588 if (!err && params.use_4addr != -1)
2589 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2590
2591 return err;
2592 }
2593
2594 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2595 {
2596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2597 struct vif_params params;
2598 struct wireless_dev *wdev;
2599 struct sk_buff *msg, *event;
2600 int err;
2601 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2602 u32 flags;
2603
2604 /* to avoid failing a new interface creation due to pending removal */
2605 cfg80211_destroy_ifaces(rdev);
2606
2607 memset(&params, 0, sizeof(params));
2608
2609 if (!info->attrs[NL80211_ATTR_IFNAME])
2610 return -EINVAL;
2611
2612 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2613 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2614 if (type > NL80211_IFTYPE_MAX)
2615 return -EINVAL;
2616 }
2617
2618 if (!rdev->ops->add_virtual_intf ||
2619 !(rdev->wiphy.interface_modes & (1 << type)))
2620 return -EOPNOTSUPP;
2621
2622 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2623 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2624 info->attrs[NL80211_ATTR_MAC]) {
2625 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2626 ETH_ALEN);
2627 if (!is_valid_ether_addr(params.macaddr))
2628 return -EADDRNOTAVAIL;
2629 }
2630
2631 if (info->attrs[NL80211_ATTR_4ADDR]) {
2632 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2633 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2634 if (err)
2635 return err;
2636 }
2637
2638 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2639 if (!msg)
2640 return -ENOMEM;
2641
2642 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2643 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2644 &flags);
2645
2646 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2647 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2648 return -EOPNOTSUPP;
2649
2650 wdev = rdev_add_virtual_intf(rdev,
2651 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2652 type, err ? NULL : &flags, &params);
2653 if (WARN_ON(!wdev)) {
2654 nlmsg_free(msg);
2655 return -EPROTO;
2656 } else if (IS_ERR(wdev)) {
2657 nlmsg_free(msg);
2658 return PTR_ERR(wdev);
2659 }
2660
2661 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2662 wdev->owner_nlportid = info->snd_portid;
2663
2664 switch (type) {
2665 case NL80211_IFTYPE_MESH_POINT:
2666 if (!info->attrs[NL80211_ATTR_MESH_ID])
2667 break;
2668 wdev_lock(wdev);
2669 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2670 IEEE80211_MAX_MESH_ID_LEN);
2671 wdev->mesh_id_up_len =
2672 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2673 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2674 wdev->mesh_id_up_len);
2675 wdev_unlock(wdev);
2676 break;
2677 case NL80211_IFTYPE_P2P_DEVICE:
2678 /*
2679 * P2P Device doesn't have a netdev, so doesn't go
2680 * through the netdev notifier and must be added here
2681 */
2682 mutex_init(&wdev->mtx);
2683 INIT_LIST_HEAD(&wdev->event_list);
2684 spin_lock_init(&wdev->event_lock);
2685 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2686 spin_lock_init(&wdev->mgmt_registrations_lock);
2687
2688 wdev->identifier = ++rdev->wdev_id;
2689 list_add_rcu(&wdev->list, &rdev->wdev_list);
2690 rdev->devlist_generation++;
2691 break;
2692 default:
2693 break;
2694 }
2695
2696 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2697 rdev, wdev, false) < 0) {
2698 nlmsg_free(msg);
2699 return -ENOBUFS;
2700 }
2701
2702 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2703 if (event) {
2704 if (nl80211_send_iface(event, 0, 0, 0,
2705 rdev, wdev, false) < 0) {
2706 nlmsg_free(event);
2707 goto out;
2708 }
2709
2710 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2711 event, 0, NL80211_MCGRP_CONFIG,
2712 GFP_KERNEL);
2713 }
2714
2715 out:
2716 return genlmsg_reply(msg, info);
2717 }
2718
2719 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2720 {
2721 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2722 struct wireless_dev *wdev = info->user_ptr[1];
2723 struct sk_buff *msg;
2724 int status;
2725
2726 if (!rdev->ops->del_virtual_intf)
2727 return -EOPNOTSUPP;
2728
2729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2730 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2731 nlmsg_free(msg);
2732 msg = NULL;
2733 }
2734
2735 /*
2736 * If we remove a wireless device without a netdev then clear
2737 * user_ptr[1] so that nl80211_post_doit won't dereference it
2738 * to check if it needs to do dev_put(). Otherwise it crashes
2739 * since the wdev has been freed, unlike with a netdev where
2740 * we need the dev_put() for the netdev to really be freed.
2741 */
2742 if (!wdev->netdev)
2743 info->user_ptr[1] = NULL;
2744
2745 status = rdev_del_virtual_intf(rdev, wdev);
2746 if (status >= 0 && msg)
2747 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2748 msg, 0, NL80211_MCGRP_CONFIG,
2749 GFP_KERNEL);
2750 else
2751 nlmsg_free(msg);
2752
2753 return status;
2754 }
2755
2756 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2757 {
2758 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2759 struct net_device *dev = info->user_ptr[1];
2760 u16 noack_map;
2761
2762 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2763 return -EINVAL;
2764
2765 if (!rdev->ops->set_noack_map)
2766 return -EOPNOTSUPP;
2767
2768 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2769
2770 return rdev_set_noack_map(rdev, dev, noack_map);
2771 }
2772
2773 struct get_key_cookie {
2774 struct sk_buff *msg;
2775 int error;
2776 int idx;
2777 };
2778
2779 static void get_key_callback(void *c, struct key_params *params)
2780 {
2781 struct nlattr *key;
2782 struct get_key_cookie *cookie = c;
2783
2784 if ((params->key &&
2785 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2786 params->key_len, params->key)) ||
2787 (params->seq &&
2788 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2789 params->seq_len, params->seq)) ||
2790 (params->cipher &&
2791 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2792 params->cipher)))
2793 goto nla_put_failure;
2794
2795 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2796 if (!key)
2797 goto nla_put_failure;
2798
2799 if ((params->key &&
2800 nla_put(cookie->msg, NL80211_KEY_DATA,
2801 params->key_len, params->key)) ||
2802 (params->seq &&
2803 nla_put(cookie->msg, NL80211_KEY_SEQ,
2804 params->seq_len, params->seq)) ||
2805 (params->cipher &&
2806 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2807 params->cipher)))
2808 goto nla_put_failure;
2809
2810 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2811 goto nla_put_failure;
2812
2813 nla_nest_end(cookie->msg, key);
2814
2815 return;
2816 nla_put_failure:
2817 cookie->error = 1;
2818 }
2819
2820 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2821 {
2822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2823 int err;
2824 struct net_device *dev = info->user_ptr[1];
2825 u8 key_idx = 0;
2826 const u8 *mac_addr = NULL;
2827 bool pairwise;
2828 struct get_key_cookie cookie = {
2829 .error = 0,
2830 };
2831 void *hdr;
2832 struct sk_buff *msg;
2833
2834 if (info->attrs[NL80211_ATTR_KEY_IDX])
2835 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2836
2837 if (key_idx > 5)
2838 return -EINVAL;
2839
2840 if (info->attrs[NL80211_ATTR_MAC])
2841 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2842
2843 pairwise = !!mac_addr;
2844 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2845 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2846 if (kt >= NUM_NL80211_KEYTYPES)
2847 return -EINVAL;
2848 if (kt != NL80211_KEYTYPE_GROUP &&
2849 kt != NL80211_KEYTYPE_PAIRWISE)
2850 return -EINVAL;
2851 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2852 }
2853
2854 if (!rdev->ops->get_key)
2855 return -EOPNOTSUPP;
2856
2857 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2858 if (!msg)
2859 return -ENOMEM;
2860
2861 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2862 NL80211_CMD_NEW_KEY);
2863 if (!hdr)
2864 goto nla_put_failure;
2865
2866 cookie.msg = msg;
2867 cookie.idx = key_idx;
2868
2869 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2870 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2871 goto nla_put_failure;
2872 if (mac_addr &&
2873 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2874 goto nla_put_failure;
2875
2876 if (pairwise && mac_addr &&
2877 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2878 return -ENOENT;
2879
2880 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2881 get_key_callback);
2882
2883 if (err)
2884 goto free_msg;
2885
2886 if (cookie.error)
2887 goto nla_put_failure;
2888
2889 genlmsg_end(msg, hdr);
2890 return genlmsg_reply(msg, info);
2891
2892 nla_put_failure:
2893 err = -ENOBUFS;
2894 free_msg:
2895 nlmsg_free(msg);
2896 return err;
2897 }
2898
2899 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2900 {
2901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2902 struct key_parse key;
2903 int err;
2904 struct net_device *dev = info->user_ptr[1];
2905
2906 err = nl80211_parse_key(info, &key);
2907 if (err)
2908 return err;
2909
2910 if (key.idx < 0)
2911 return -EINVAL;
2912
2913 /* only support setting default key */
2914 if (!key.def && !key.defmgmt)
2915 return -EINVAL;
2916
2917 wdev_lock(dev->ieee80211_ptr);
2918
2919 if (key.def) {
2920 if (!rdev->ops->set_default_key) {
2921 err = -EOPNOTSUPP;
2922 goto out;
2923 }
2924
2925 err = nl80211_key_allowed(dev->ieee80211_ptr);
2926 if (err)
2927 goto out;
2928
2929 err = rdev_set_default_key(rdev, dev, key.idx,
2930 key.def_uni, key.def_multi);
2931
2932 if (err)
2933 goto out;
2934
2935 #ifdef CONFIG_CFG80211_WEXT
2936 dev->ieee80211_ptr->wext.default_key = key.idx;
2937 #endif
2938 } else {
2939 if (key.def_uni || !key.def_multi) {
2940 err = -EINVAL;
2941 goto out;
2942 }
2943
2944 if (!rdev->ops->set_default_mgmt_key) {
2945 err = -EOPNOTSUPP;
2946 goto out;
2947 }
2948
2949 err = nl80211_key_allowed(dev->ieee80211_ptr);
2950 if (err)
2951 goto out;
2952
2953 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2954 if (err)
2955 goto out;
2956
2957 #ifdef CONFIG_CFG80211_WEXT
2958 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2959 #endif
2960 }
2961
2962 out:
2963 wdev_unlock(dev->ieee80211_ptr);
2964
2965 return err;
2966 }
2967
2968 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2969 {
2970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2971 int err;
2972 struct net_device *dev = info->user_ptr[1];
2973 struct key_parse key;
2974 const u8 *mac_addr = NULL;
2975
2976 err = nl80211_parse_key(info, &key);
2977 if (err)
2978 return err;
2979
2980 if (!key.p.key)
2981 return -EINVAL;
2982
2983 if (info->attrs[NL80211_ATTR_MAC])
2984 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2985
2986 if (key.type == -1) {
2987 if (mac_addr)
2988 key.type = NL80211_KEYTYPE_PAIRWISE;
2989 else
2990 key.type = NL80211_KEYTYPE_GROUP;
2991 }
2992
2993 /* for now */
2994 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2995 key.type != NL80211_KEYTYPE_GROUP)
2996 return -EINVAL;
2997
2998 if (!rdev->ops->add_key)
2999 return -EOPNOTSUPP;
3000
3001 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3002 key.type == NL80211_KEYTYPE_PAIRWISE,
3003 mac_addr))
3004 return -EINVAL;
3005
3006 wdev_lock(dev->ieee80211_ptr);
3007 err = nl80211_key_allowed(dev->ieee80211_ptr);
3008 if (!err)
3009 err = rdev_add_key(rdev, dev, key.idx,
3010 key.type == NL80211_KEYTYPE_PAIRWISE,
3011 mac_addr, &key.p);
3012 wdev_unlock(dev->ieee80211_ptr);
3013
3014 return err;
3015 }
3016
3017 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3018 {
3019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3020 int err;
3021 struct net_device *dev = info->user_ptr[1];
3022 u8 *mac_addr = NULL;
3023 struct key_parse key;
3024
3025 err = nl80211_parse_key(info, &key);
3026 if (err)
3027 return err;
3028
3029 if (info->attrs[NL80211_ATTR_MAC])
3030 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3031
3032 if (key.type == -1) {
3033 if (mac_addr)
3034 key.type = NL80211_KEYTYPE_PAIRWISE;
3035 else
3036 key.type = NL80211_KEYTYPE_GROUP;
3037 }
3038
3039 /* for now */
3040 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3041 key.type != NL80211_KEYTYPE_GROUP)
3042 return -EINVAL;
3043
3044 if (!rdev->ops->del_key)
3045 return -EOPNOTSUPP;
3046
3047 wdev_lock(dev->ieee80211_ptr);
3048 err = nl80211_key_allowed(dev->ieee80211_ptr);
3049
3050 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3051 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3052 err = -ENOENT;
3053
3054 if (!err)
3055 err = rdev_del_key(rdev, dev, key.idx,
3056 key.type == NL80211_KEYTYPE_PAIRWISE,
3057 mac_addr);
3058
3059 #ifdef CONFIG_CFG80211_WEXT
3060 if (!err) {
3061 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3062 dev->ieee80211_ptr->wext.default_key = -1;
3063 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3064 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3065 }
3066 #endif
3067 wdev_unlock(dev->ieee80211_ptr);
3068
3069 return err;
3070 }
3071
3072 /* This function returns an error or the number of nested attributes */
3073 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3074 {
3075 struct nlattr *attr;
3076 int n_entries = 0, tmp;
3077
3078 nla_for_each_nested(attr, nl_attr, tmp) {
3079 if (nla_len(attr) != ETH_ALEN)
3080 return -EINVAL;
3081
3082 n_entries++;
3083 }
3084
3085 return n_entries;
3086 }
3087
3088 /*
3089 * This function parses ACL information and allocates memory for ACL data.
3090 * On successful return, the calling function is responsible to free the
3091 * ACL buffer returned by this function.
3092 */
3093 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3094 struct genl_info *info)
3095 {
3096 enum nl80211_acl_policy acl_policy;
3097 struct nlattr *attr;
3098 struct cfg80211_acl_data *acl;
3099 int i = 0, n_entries, tmp;
3100
3101 if (!wiphy->max_acl_mac_addrs)
3102 return ERR_PTR(-EOPNOTSUPP);
3103
3104 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3105 return ERR_PTR(-EINVAL);
3106
3107 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3108 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3109 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3110 return ERR_PTR(-EINVAL);
3111
3112 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3113 return ERR_PTR(-EINVAL);
3114
3115 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3116 if (n_entries < 0)
3117 return ERR_PTR(n_entries);
3118
3119 if (n_entries > wiphy->max_acl_mac_addrs)
3120 return ERR_PTR(-ENOTSUPP);
3121
3122 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3123 GFP_KERNEL);
3124 if (!acl)
3125 return ERR_PTR(-ENOMEM);
3126
3127 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3128 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3129 i++;
3130 }
3131
3132 acl->n_acl_entries = n_entries;
3133 acl->acl_policy = acl_policy;
3134
3135 return acl;
3136 }
3137
3138 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3139 {
3140 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3141 struct net_device *dev = info->user_ptr[1];
3142 struct cfg80211_acl_data *acl;
3143 int err;
3144
3145 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3146 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3147 return -EOPNOTSUPP;
3148
3149 if (!dev->ieee80211_ptr->beacon_interval)
3150 return -EINVAL;
3151
3152 acl = parse_acl_data(&rdev->wiphy, info);
3153 if (IS_ERR(acl))
3154 return PTR_ERR(acl);
3155
3156 err = rdev_set_mac_acl(rdev, dev, acl);
3157
3158 kfree(acl);
3159
3160 return err;
3161 }
3162
3163 static int nl80211_parse_beacon(struct nlattr *attrs[],
3164 struct cfg80211_beacon_data *bcn)
3165 {
3166 bool haveinfo = false;
3167
3168 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3169 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3170 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3171 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3172 return -EINVAL;
3173
3174 memset(bcn, 0, sizeof(*bcn));
3175
3176 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3177 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3178 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3179 if (!bcn->head_len)
3180 return -EINVAL;
3181 haveinfo = true;
3182 }
3183
3184 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3185 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3186 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3187 haveinfo = true;
3188 }
3189
3190 if (!haveinfo)
3191 return -EINVAL;
3192
3193 if (attrs[NL80211_ATTR_IE]) {
3194 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3195 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3196 }
3197
3198 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3199 bcn->proberesp_ies =
3200 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3201 bcn->proberesp_ies_len =
3202 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3203 }
3204
3205 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3206 bcn->assocresp_ies =
3207 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3208 bcn->assocresp_ies_len =
3209 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3210 }
3211
3212 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3213 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3214 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3215 }
3216
3217 return 0;
3218 }
3219
3220 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3221 struct cfg80211_ap_settings *params)
3222 {
3223 struct wireless_dev *wdev;
3224 bool ret = false;
3225
3226 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3227 if (wdev->iftype != NL80211_IFTYPE_AP &&
3228 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3229 continue;
3230
3231 if (!wdev->preset_chandef.chan)
3232 continue;
3233
3234 params->chandef = wdev->preset_chandef;
3235 ret = true;
3236 break;
3237 }
3238
3239 return ret;
3240 }
3241
3242 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3243 enum nl80211_auth_type auth_type,
3244 enum nl80211_commands cmd)
3245 {
3246 if (auth_type > NL80211_AUTHTYPE_MAX)
3247 return false;
3248
3249 switch (cmd) {
3250 case NL80211_CMD_AUTHENTICATE:
3251 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3252 auth_type == NL80211_AUTHTYPE_SAE)
3253 return false;
3254 return true;
3255 case NL80211_CMD_CONNECT:
3256 case NL80211_CMD_START_AP:
3257 /* SAE not supported yet */
3258 if (auth_type == NL80211_AUTHTYPE_SAE)
3259 return false;
3260 return true;
3261 default:
3262 return false;
3263 }
3264 }
3265
3266 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3267 {
3268 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3269 struct net_device *dev = info->user_ptr[1];
3270 struct wireless_dev *wdev = dev->ieee80211_ptr;
3271 struct cfg80211_ap_settings params;
3272 int err;
3273
3274 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3275 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3276 return -EOPNOTSUPP;
3277
3278 if (!rdev->ops->start_ap)
3279 return -EOPNOTSUPP;
3280
3281 if (wdev->beacon_interval)
3282 return -EALREADY;
3283
3284 memset(&params, 0, sizeof(params));
3285
3286 /* these are required for START_AP */
3287 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3288 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3289 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3290 return -EINVAL;
3291
3292 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3293 if (err)
3294 return err;
3295
3296 params.beacon_interval =
3297 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3298 params.dtim_period =
3299 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3300
3301 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3302 if (err)
3303 return err;
3304
3305 /*
3306 * In theory, some of these attributes should be required here
3307 * but since they were not used when the command was originally
3308 * added, keep them optional for old user space programs to let
3309 * them continue to work with drivers that do not need the
3310 * additional information -- drivers must check!
3311 */
3312 if (info->attrs[NL80211_ATTR_SSID]) {
3313 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3314 params.ssid_len =
3315 nla_len(info->attrs[NL80211_ATTR_SSID]);
3316 if (params.ssid_len == 0 ||
3317 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3318 return -EINVAL;
3319 }
3320
3321 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3322 params.hidden_ssid = nla_get_u32(
3323 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3324 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3325 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3326 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3327 return -EINVAL;
3328 }
3329
3330 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3331
3332 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3333 params.auth_type = nla_get_u32(
3334 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3335 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3336 NL80211_CMD_START_AP))
3337 return -EINVAL;
3338 } else
3339 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3340
3341 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3342 NL80211_MAX_NR_CIPHER_SUITES);
3343 if (err)
3344 return err;
3345
3346 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3347 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3348 return -EOPNOTSUPP;
3349 params.inactivity_timeout = nla_get_u16(
3350 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3351 }
3352
3353 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3354 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3355 return -EINVAL;
3356 params.p2p_ctwindow =
3357 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3358 if (params.p2p_ctwindow > 127)
3359 return -EINVAL;
3360 if (params.p2p_ctwindow != 0 &&
3361 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3362 return -EINVAL;
3363 }
3364
3365 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3366 u8 tmp;
3367
3368 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3369 return -EINVAL;
3370 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3371 if (tmp > 1)
3372 return -EINVAL;
3373 params.p2p_opp_ps = tmp;
3374 if (params.p2p_opp_ps != 0 &&
3375 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3376 return -EINVAL;
3377 }
3378
3379 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3380 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3381 if (err)
3382 return err;
3383 } else if (wdev->preset_chandef.chan) {
3384 params.chandef = wdev->preset_chandef;
3385 } else if (!nl80211_get_ap_channel(rdev, &params))
3386 return -EINVAL;
3387
3388 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3389 wdev->iftype))
3390 return -EINVAL;
3391
3392 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3393 params.acl = parse_acl_data(&rdev->wiphy, info);
3394 if (IS_ERR(params.acl))
3395 return PTR_ERR(params.acl);
3396 }
3397
3398 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3399 params.smps_mode =
3400 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3401 switch (params.smps_mode) {
3402 case NL80211_SMPS_OFF:
3403 break;
3404 case NL80211_SMPS_STATIC:
3405 if (!(rdev->wiphy.features &
3406 NL80211_FEATURE_STATIC_SMPS))
3407 return -EINVAL;
3408 break;
3409 case NL80211_SMPS_DYNAMIC:
3410 if (!(rdev->wiphy.features &
3411 NL80211_FEATURE_DYNAMIC_SMPS))
3412 return -EINVAL;
3413 break;
3414 default:
3415 return -EINVAL;
3416 }
3417 } else {
3418 params.smps_mode = NL80211_SMPS_OFF;
3419 }
3420
3421 wdev_lock(wdev);
3422 err = rdev_start_ap(rdev, dev, &params);
3423 if (!err) {
3424 wdev->preset_chandef = params.chandef;
3425 wdev->beacon_interval = params.beacon_interval;
3426 wdev->chandef = params.chandef;
3427 wdev->ssid_len = params.ssid_len;
3428 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3429 }
3430 wdev_unlock(wdev);
3431
3432 kfree(params.acl);
3433
3434 return err;
3435 }
3436
3437 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3438 {
3439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3440 struct net_device *dev = info->user_ptr[1];
3441 struct wireless_dev *wdev = dev->ieee80211_ptr;
3442 struct cfg80211_beacon_data params;
3443 int err;
3444
3445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3446 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3447 return -EOPNOTSUPP;
3448
3449 if (!rdev->ops->change_beacon)
3450 return -EOPNOTSUPP;
3451
3452 if (!wdev->beacon_interval)
3453 return -EINVAL;
3454
3455 err = nl80211_parse_beacon(info->attrs, &params);
3456 if (err)
3457 return err;
3458
3459 wdev_lock(wdev);
3460 err = rdev_change_beacon(rdev, dev, &params);
3461 wdev_unlock(wdev);
3462
3463 return err;
3464 }
3465
3466 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3467 {
3468 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3469 struct net_device *dev = info->user_ptr[1];
3470
3471 return cfg80211_stop_ap(rdev, dev, false);
3472 }
3473
3474 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3475 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3476 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3477 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3478 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3479 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3480 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3481 };
3482
3483 static int parse_station_flags(struct genl_info *info,
3484 enum nl80211_iftype iftype,
3485 struct station_parameters *params)
3486 {
3487 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3488 struct nlattr *nla;
3489 int flag;
3490
3491 /*
3492 * Try parsing the new attribute first so userspace
3493 * can specify both for older kernels.
3494 */
3495 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3496 if (nla) {
3497 struct nl80211_sta_flag_update *sta_flags;
3498
3499 sta_flags = nla_data(nla);
3500 params->sta_flags_mask = sta_flags->mask;
3501 params->sta_flags_set = sta_flags->set;
3502 params->sta_flags_set &= params->sta_flags_mask;
3503 if ((params->sta_flags_mask |
3504 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3505 return -EINVAL;
3506 return 0;
3507 }
3508
3509 /* if present, parse the old attribute */
3510
3511 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3512 if (!nla)
3513 return 0;
3514
3515 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3516 nla, sta_flags_policy))
3517 return -EINVAL;
3518
3519 /*
3520 * Only allow certain flags for interface types so that
3521 * other attributes are silently ignored. Remember that
3522 * this is backward compatibility code with old userspace
3523 * and shouldn't be hit in other cases anyway.
3524 */
3525 switch (iftype) {
3526 case NL80211_IFTYPE_AP:
3527 case NL80211_IFTYPE_AP_VLAN:
3528 case NL80211_IFTYPE_P2P_GO:
3529 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3530 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3531 BIT(NL80211_STA_FLAG_WME) |
3532 BIT(NL80211_STA_FLAG_MFP);
3533 break;
3534 case NL80211_IFTYPE_P2P_CLIENT:
3535 case NL80211_IFTYPE_STATION:
3536 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3537 BIT(NL80211_STA_FLAG_TDLS_PEER);
3538 break;
3539 case NL80211_IFTYPE_MESH_POINT:
3540 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3541 BIT(NL80211_STA_FLAG_MFP) |
3542 BIT(NL80211_STA_FLAG_AUTHORIZED);
3543 default:
3544 return -EINVAL;
3545 }
3546
3547 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3548 if (flags[flag]) {
3549 params->sta_flags_set |= (1<<flag);
3550
3551 /* no longer support new API additions in old API */
3552 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3553 return -EINVAL;
3554 }
3555 }
3556
3557 return 0;
3558 }
3559
3560 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3561 int attr)
3562 {
3563 struct nlattr *rate;
3564 u32 bitrate;
3565 u16 bitrate_compat;
3566
3567 rate = nla_nest_start(msg, attr);
3568 if (!rate)
3569 return false;
3570
3571 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3572 bitrate = cfg80211_calculate_bitrate(info);
3573 /* report 16-bit bitrate only if we can */
3574 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3575 if (bitrate > 0 &&
3576 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3577 return false;
3578 if (bitrate_compat > 0 &&
3579 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3580 return false;
3581
3582 if (info->flags & RATE_INFO_FLAGS_MCS) {
3583 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3584 return false;
3585 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3586 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3587 return false;
3588 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3589 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3590 return false;
3591 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3592 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3593 return false;
3594 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3595 return false;
3596 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3597 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3598 return false;
3599 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3600 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3601 return false;
3602 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3603 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3604 return false;
3605 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3606 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3607 return false;
3608 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3609 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3610 return false;
3611 }
3612
3613 nla_nest_end(msg, rate);
3614 return true;
3615 }
3616
3617 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3618 int id)
3619 {
3620 void *attr;
3621 int i = 0;
3622
3623 if (!mask)
3624 return true;
3625
3626 attr = nla_nest_start(msg, id);
3627 if (!attr)
3628 return false;
3629
3630 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3631 if (!(mask & BIT(i)))
3632 continue;
3633
3634 if (nla_put_u8(msg, i, signal[i]))
3635 return false;
3636 }
3637
3638 nla_nest_end(msg, attr);
3639
3640 return true;
3641 }
3642
3643 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3644 int flags,
3645 struct cfg80211_registered_device *rdev,
3646 struct net_device *dev,
3647 const u8 *mac_addr, struct station_info *sinfo)
3648 {
3649 void *hdr;
3650 struct nlattr *sinfoattr, *bss_param;
3651
3652 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3653 if (!hdr)
3654 return -1;
3655
3656 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3657 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3658 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3659 goto nla_put_failure;
3660
3661 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3662 if (!sinfoattr)
3663 goto nla_put_failure;
3664 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3665 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3666 sinfo->connected_time))
3667 goto nla_put_failure;
3668 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3669 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3670 sinfo->inactive_time))
3671 goto nla_put_failure;
3672 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3673 STATION_INFO_RX_BYTES64)) &&
3674 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3675 (u32)sinfo->rx_bytes))
3676 goto nla_put_failure;
3677 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3678 STATION_INFO_TX_BYTES64)) &&
3679 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3680 (u32)sinfo->tx_bytes))
3681 goto nla_put_failure;
3682 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3683 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3684 sinfo->rx_bytes))
3685 goto nla_put_failure;
3686 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3687 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3688 sinfo->tx_bytes))
3689 goto nla_put_failure;
3690 if ((sinfo->filled & STATION_INFO_LLID) &&
3691 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3692 goto nla_put_failure;
3693 if ((sinfo->filled & STATION_INFO_PLID) &&
3694 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3695 goto nla_put_failure;
3696 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3697 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3698 sinfo->plink_state))
3699 goto nla_put_failure;
3700 switch (rdev->wiphy.signal_type) {
3701 case CFG80211_SIGNAL_TYPE_MBM:
3702 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3703 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3704 sinfo->signal))
3705 goto nla_put_failure;
3706 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3707 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3708 sinfo->signal_avg))
3709 goto nla_put_failure;
3710 break;
3711 default:
3712 break;
3713 }
3714 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3715 if (!nl80211_put_signal(msg, sinfo->chains,
3716 sinfo->chain_signal,
3717 NL80211_STA_INFO_CHAIN_SIGNAL))
3718 goto nla_put_failure;
3719 }
3720 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3721 if (!nl80211_put_signal(msg, sinfo->chains,
3722 sinfo->chain_signal_avg,
3723 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3724 goto nla_put_failure;
3725 }
3726 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3727 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3728 NL80211_STA_INFO_TX_BITRATE))
3729 goto nla_put_failure;
3730 }
3731 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3732 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3733 NL80211_STA_INFO_RX_BITRATE))
3734 goto nla_put_failure;
3735 }
3736 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3737 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3738 sinfo->rx_packets))
3739 goto nla_put_failure;
3740 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3741 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3742 sinfo->tx_packets))
3743 goto nla_put_failure;
3744 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3745 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3746 sinfo->tx_retries))
3747 goto nla_put_failure;
3748 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3749 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3750 sinfo->tx_failed))
3751 goto nla_put_failure;
3752 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3753 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3754 sinfo->expected_throughput))
3755 goto nla_put_failure;
3756 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3757 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3758 sinfo->beacon_loss_count))
3759 goto nla_put_failure;
3760 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3761 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3762 sinfo->local_pm))
3763 goto nla_put_failure;
3764 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3765 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3766 sinfo->peer_pm))
3767 goto nla_put_failure;
3768 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3769 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3770 sinfo->nonpeer_pm))
3771 goto nla_put_failure;
3772 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3773 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3774 if (!bss_param)
3775 goto nla_put_failure;
3776
3777 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3778 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3779 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3780 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3781 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3782 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3783 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3784 sinfo->bss_param.dtim_period) ||
3785 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3786 sinfo->bss_param.beacon_interval))
3787 goto nla_put_failure;
3788
3789 nla_nest_end(msg, bss_param);
3790 }
3791 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3792 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3793 sizeof(struct nl80211_sta_flag_update),
3794 &sinfo->sta_flags))
3795 goto nla_put_failure;
3796 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3797 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3798 sinfo->t_offset))
3799 goto nla_put_failure;
3800 nla_nest_end(msg, sinfoattr);
3801
3802 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3803 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3804 sinfo->assoc_req_ies))
3805 goto nla_put_failure;
3806
3807 return genlmsg_end(msg, hdr);
3808
3809 nla_put_failure:
3810 genlmsg_cancel(msg, hdr);
3811 return -EMSGSIZE;
3812 }
3813
3814 static int nl80211_dump_station(struct sk_buff *skb,
3815 struct netlink_callback *cb)
3816 {
3817 struct station_info sinfo;
3818 struct cfg80211_registered_device *rdev;
3819 struct wireless_dev *wdev;
3820 u8 mac_addr[ETH_ALEN];
3821 int sta_idx = cb->args[2];
3822 int err;
3823
3824 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3825 if (err)
3826 return err;
3827
3828 if (!wdev->netdev) {
3829 err = -EINVAL;
3830 goto out_err;
3831 }
3832
3833 if (!rdev->ops->dump_station) {
3834 err = -EOPNOTSUPP;
3835 goto out_err;
3836 }
3837
3838 while (1) {
3839 memset(&sinfo, 0, sizeof(sinfo));
3840 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3841 mac_addr, &sinfo);
3842 if (err == -ENOENT)
3843 break;
3844 if (err)
3845 goto out_err;
3846
3847 if (nl80211_send_station(skb,
3848 NETLINK_CB(cb->skb).portid,
3849 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3850 rdev, wdev->netdev, mac_addr,
3851 &sinfo) < 0)
3852 goto out;
3853
3854 sta_idx++;
3855 }
3856
3857
3858 out:
3859 cb->args[2] = sta_idx;
3860 err = skb->len;
3861 out_err:
3862 nl80211_finish_wdev_dump(rdev);
3863
3864 return err;
3865 }
3866
3867 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3868 {
3869 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3870 struct net_device *dev = info->user_ptr[1];
3871 struct station_info sinfo;
3872 struct sk_buff *msg;
3873 u8 *mac_addr = NULL;
3874 int err;
3875
3876 memset(&sinfo, 0, sizeof(sinfo));
3877
3878 if (!info->attrs[NL80211_ATTR_MAC])
3879 return -EINVAL;
3880
3881 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3882
3883 if (!rdev->ops->get_station)
3884 return -EOPNOTSUPP;
3885
3886 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3887 if (err)
3888 return err;
3889
3890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3891 if (!msg)
3892 return -ENOMEM;
3893
3894 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3895 rdev, dev, mac_addr, &sinfo) < 0) {
3896 nlmsg_free(msg);
3897 return -ENOBUFS;
3898 }
3899
3900 return genlmsg_reply(msg, info);
3901 }
3902
3903 int cfg80211_check_station_change(struct wiphy *wiphy,
3904 struct station_parameters *params,
3905 enum cfg80211_station_type statype)
3906 {
3907 if (params->listen_interval != -1)
3908 return -EINVAL;
3909 if (params->aid &&
3910 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3911 return -EINVAL;
3912
3913 /* When you run into this, adjust the code below for the new flag */
3914 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3915
3916 switch (statype) {
3917 case CFG80211_STA_MESH_PEER_KERNEL:
3918 case CFG80211_STA_MESH_PEER_USER:
3919 /*
3920 * No ignoring the TDLS flag here -- the userspace mesh
3921 * code doesn't have the bug of including TDLS in the
3922 * mask everywhere.
3923 */
3924 if (params->sta_flags_mask &
3925 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3926 BIT(NL80211_STA_FLAG_MFP) |
3927 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3928 return -EINVAL;
3929 break;
3930 case CFG80211_STA_TDLS_PEER_SETUP:
3931 case CFG80211_STA_TDLS_PEER_ACTIVE:
3932 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3933 return -EINVAL;
3934 /* ignore since it can't change */
3935 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3936 break;
3937 default:
3938 /* disallow mesh-specific things */
3939 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3940 return -EINVAL;
3941 if (params->local_pm)
3942 return -EINVAL;
3943 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3944 return -EINVAL;
3945 }
3946
3947 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3948 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3949 /* TDLS can't be set, ... */
3950 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3951 return -EINVAL;
3952 /*
3953 * ... but don't bother the driver with it. This works around
3954 * a hostapd/wpa_supplicant issue -- it always includes the
3955 * TLDS_PEER flag in the mask even for AP mode.
3956 */
3957 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3958 }
3959
3960 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3961 /* reject other things that can't change */
3962 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3963 return -EINVAL;
3964 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3965 return -EINVAL;
3966 if (params->supported_rates)
3967 return -EINVAL;
3968 if (params->ext_capab || params->ht_capa || params->vht_capa)
3969 return -EINVAL;
3970 }
3971
3972 if (statype != CFG80211_STA_AP_CLIENT) {
3973 if (params->vlan)
3974 return -EINVAL;
3975 }
3976
3977 switch (statype) {
3978 case CFG80211_STA_AP_MLME_CLIENT:
3979 /* Use this only for authorizing/unauthorizing a station */
3980 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3981 return -EOPNOTSUPP;
3982 break;
3983 case CFG80211_STA_AP_CLIENT:
3984 /* accept only the listed bits */
3985 if (params->sta_flags_mask &
3986 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3987 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3988 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3989 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3990 BIT(NL80211_STA_FLAG_WME) |
3991 BIT(NL80211_STA_FLAG_MFP)))
3992 return -EINVAL;
3993
3994 /* but authenticated/associated only if driver handles it */
3995 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3996 params->sta_flags_mask &
3997 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3998 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3999 return -EINVAL;
4000 break;
4001 case CFG80211_STA_IBSS:
4002 case CFG80211_STA_AP_STA:
4003 /* reject any changes other than AUTHORIZED */
4004 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4005 return -EINVAL;
4006 break;
4007 case CFG80211_STA_TDLS_PEER_SETUP:
4008 /* reject any changes other than AUTHORIZED or WME */
4009 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4010 BIT(NL80211_STA_FLAG_WME)))
4011 return -EINVAL;
4012 /* force (at least) rates when authorizing */
4013 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4014 !params->supported_rates)
4015 return -EINVAL;
4016 break;
4017 case CFG80211_STA_TDLS_PEER_ACTIVE:
4018 /* reject any changes */
4019 return -EINVAL;
4020 case CFG80211_STA_MESH_PEER_KERNEL:
4021 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4022 return -EINVAL;
4023 break;
4024 case CFG80211_STA_MESH_PEER_USER:
4025 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4026 return -EINVAL;
4027 break;
4028 }
4029
4030 return 0;
4031 }
4032 EXPORT_SYMBOL(cfg80211_check_station_change);
4033
4034 /*
4035 * Get vlan interface making sure it is running and on the right wiphy.
4036 */
4037 static struct net_device *get_vlan(struct genl_info *info,
4038 struct cfg80211_registered_device *rdev)
4039 {
4040 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4041 struct net_device *v;
4042 int ret;
4043
4044 if (!vlanattr)
4045 return NULL;
4046
4047 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4048 if (!v)
4049 return ERR_PTR(-ENODEV);
4050
4051 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4052 ret = -EINVAL;
4053 goto error;
4054 }
4055
4056 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4057 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4058 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4059 ret = -EINVAL;
4060 goto error;
4061 }
4062
4063 if (!netif_running(v)) {
4064 ret = -ENETDOWN;
4065 goto error;
4066 }
4067
4068 return v;
4069 error:
4070 dev_put(v);
4071 return ERR_PTR(ret);
4072 }
4073
4074 static const struct nla_policy
4075 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4076 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4077 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4078 };
4079
4080 static int nl80211_parse_sta_wme(struct genl_info *info,
4081 struct station_parameters *params)
4082 {
4083 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4084 struct nlattr *nla;
4085 int err;
4086
4087 /* parse WME attributes if present */
4088 if (!info->attrs[NL80211_ATTR_STA_WME])
4089 return 0;
4090
4091 nla = info->attrs[NL80211_ATTR_STA_WME];
4092 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4093 nl80211_sta_wme_policy);
4094 if (err)
4095 return err;
4096
4097 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4098 params->uapsd_queues = nla_get_u8(
4099 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4100 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4101 return -EINVAL;
4102
4103 if (tb[NL80211_STA_WME_MAX_SP])
4104 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4105
4106 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4107 return -EINVAL;
4108
4109 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4110
4111 return 0;
4112 }
4113
4114 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4115 struct station_parameters *params)
4116 {
4117 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4118 params->supported_channels =
4119 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4120 params->supported_channels_len =
4121 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4122 /*
4123 * Need to include at least one (first channel, number of
4124 * channels) tuple for each subband, and must have proper
4125 * tuples for the rest of the data as well.
4126 */
4127 if (params->supported_channels_len < 2)
4128 return -EINVAL;
4129 if (params->supported_channels_len % 2)
4130 return -EINVAL;
4131 }
4132
4133 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4134 params->supported_oper_classes =
4135 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4136 params->supported_oper_classes_len =
4137 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4138 /*
4139 * The value of the Length field of the Supported Operating
4140 * Classes element is between 2 and 253.
4141 */
4142 if (params->supported_oper_classes_len < 2 ||
4143 params->supported_oper_classes_len > 253)
4144 return -EINVAL;
4145 }
4146 return 0;
4147 }
4148
4149 static int nl80211_set_station_tdls(struct genl_info *info,
4150 struct station_parameters *params)
4151 {
4152 int err;
4153 /* Dummy STA entry gets updated once the peer capabilities are known */
4154 if (info->attrs[NL80211_ATTR_PEER_AID])
4155 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4156 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4157 params->ht_capa =
4158 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4159 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4160 params->vht_capa =
4161 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4162
4163 err = nl80211_parse_sta_channel_info(info, params);
4164 if (err)
4165 return err;
4166
4167 return nl80211_parse_sta_wme(info, params);
4168 }
4169
4170 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4171 {
4172 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4173 struct net_device *dev = info->user_ptr[1];
4174 struct station_parameters params;
4175 u8 *mac_addr;
4176 int err;
4177
4178 memset(&params, 0, sizeof(params));
4179
4180 params.listen_interval = -1;
4181
4182 if (!rdev->ops->change_station)
4183 return -EOPNOTSUPP;
4184
4185 if (info->attrs[NL80211_ATTR_STA_AID])
4186 return -EINVAL;
4187
4188 if (!info->attrs[NL80211_ATTR_MAC])
4189 return -EINVAL;
4190
4191 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4192
4193 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4194 params.supported_rates =
4195 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4196 params.supported_rates_len =
4197 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4198 }
4199
4200 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4201 params.capability =
4202 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4203 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4204 }
4205
4206 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4207 params.ext_capab =
4208 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4209 params.ext_capab_len =
4210 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4211 }
4212
4213 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4214 return -EINVAL;
4215
4216 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4217 return -EINVAL;
4218
4219 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4220 params.plink_action =
4221 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4222 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4223 return -EINVAL;
4224 }
4225
4226 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4227 params.plink_state =
4228 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4229 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4230 return -EINVAL;
4231 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4232 }
4233
4234 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4235 enum nl80211_mesh_power_mode pm = nla_get_u32(
4236 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4237
4238 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4239 pm > NL80211_MESH_POWER_MAX)
4240 return -EINVAL;
4241
4242 params.local_pm = pm;
4243 }
4244
4245 /* Include parameters for TDLS peer (will check later) */
4246 err = nl80211_set_station_tdls(info, &params);
4247 if (err)
4248 return err;
4249
4250 params.vlan = get_vlan(info, rdev);
4251 if (IS_ERR(params.vlan))
4252 return PTR_ERR(params.vlan);
4253
4254 switch (dev->ieee80211_ptr->iftype) {
4255 case NL80211_IFTYPE_AP:
4256 case NL80211_IFTYPE_AP_VLAN:
4257 case NL80211_IFTYPE_P2P_GO:
4258 case NL80211_IFTYPE_P2P_CLIENT:
4259 case NL80211_IFTYPE_STATION:
4260 case NL80211_IFTYPE_ADHOC:
4261 case NL80211_IFTYPE_MESH_POINT:
4262 break;
4263 default:
4264 err = -EOPNOTSUPP;
4265 goto out_put_vlan;
4266 }
4267
4268 /* driver will call cfg80211_check_station_change() */
4269 err = rdev_change_station(rdev, dev, mac_addr, &params);
4270
4271 out_put_vlan:
4272 if (params.vlan)
4273 dev_put(params.vlan);
4274
4275 return err;
4276 }
4277
4278 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4279 {
4280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4281 int err;
4282 struct net_device *dev = info->user_ptr[1];
4283 struct station_parameters params;
4284 u8 *mac_addr = NULL;
4285
4286 memset(&params, 0, sizeof(params));
4287
4288 if (!rdev->ops->add_station)
4289 return -EOPNOTSUPP;
4290
4291 if (!info->attrs[NL80211_ATTR_MAC])
4292 return -EINVAL;
4293
4294 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4295 return -EINVAL;
4296
4297 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4298 return -EINVAL;
4299
4300 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4301 !info->attrs[NL80211_ATTR_PEER_AID])
4302 return -EINVAL;
4303
4304 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4305 params.supported_rates =
4306 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4307 params.supported_rates_len =
4308 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4309 params.listen_interval =
4310 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4311
4312 if (info->attrs[NL80211_ATTR_PEER_AID])
4313 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4314 else
4315 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4316 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4317 return -EINVAL;
4318
4319 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4320 params.capability =
4321 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4322 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4323 }
4324
4325 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4326 params.ext_capab =
4327 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4328 params.ext_capab_len =
4329 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4330 }
4331
4332 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4333 params.ht_capa =
4334 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4335
4336 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4337 params.vht_capa =
4338 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4339
4340 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4341 params.opmode_notif_used = true;
4342 params.opmode_notif =
4343 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4344 }
4345
4346 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4347 params.plink_action =
4348 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4349 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4350 return -EINVAL;
4351 }
4352
4353 err = nl80211_parse_sta_channel_info(info, &params);
4354 if (err)
4355 return err;
4356
4357 err = nl80211_parse_sta_wme(info, &params);
4358 if (err)
4359 return err;
4360
4361 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4362 return -EINVAL;
4363
4364 /* When you run into this, adjust the code below for the new flag */
4365 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4366
4367 switch (dev->ieee80211_ptr->iftype) {
4368 case NL80211_IFTYPE_AP:
4369 case NL80211_IFTYPE_AP_VLAN:
4370 case NL80211_IFTYPE_P2P_GO:
4371 /* ignore WME attributes if iface/sta is not capable */
4372 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4373 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4374 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4375
4376 /* TDLS peers cannot be added */
4377 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4378 info->attrs[NL80211_ATTR_PEER_AID])
4379 return -EINVAL;
4380 /* but don't bother the driver with it */
4381 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4382
4383 /* allow authenticated/associated only if driver handles it */
4384 if (!(rdev->wiphy.features &
4385 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4386 params.sta_flags_mask &
4387 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4388 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4389 return -EINVAL;
4390
4391 /* must be last in here for error handling */
4392 params.vlan = get_vlan(info, rdev);
4393 if (IS_ERR(params.vlan))
4394 return PTR_ERR(params.vlan);
4395 break;
4396 case NL80211_IFTYPE_MESH_POINT:
4397 /* ignore uAPSD data */
4398 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4399
4400 /* associated is disallowed */
4401 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4402 return -EINVAL;
4403 /* TDLS peers cannot be added */
4404 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4405 info->attrs[NL80211_ATTR_PEER_AID])
4406 return -EINVAL;
4407 break;
4408 case NL80211_IFTYPE_STATION:
4409 case NL80211_IFTYPE_P2P_CLIENT:
4410 /* ignore uAPSD data */
4411 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4412
4413 /* these are disallowed */
4414 if (params.sta_flags_mask &
4415 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4416 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4417 return -EINVAL;
4418 /* Only TDLS peers can be added */
4419 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4420 return -EINVAL;
4421 /* Can only add if TDLS ... */
4422 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4423 return -EOPNOTSUPP;
4424 /* ... with external setup is supported */
4425 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4426 return -EOPNOTSUPP;
4427 /*
4428 * Older wpa_supplicant versions always mark the TDLS peer
4429 * as authorized, but it shouldn't yet be.
4430 */
4431 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4432 break;
4433 default:
4434 return -EOPNOTSUPP;
4435 }
4436
4437 /* be aware of params.vlan when changing code here */
4438
4439 err = rdev_add_station(rdev, dev, mac_addr, &params);
4440
4441 if (params.vlan)
4442 dev_put(params.vlan);
4443 return err;
4444 }
4445
4446 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4447 {
4448 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4449 struct net_device *dev = info->user_ptr[1];
4450 struct station_del_parameters params;
4451
4452 memset(&params, 0, sizeof(params));
4453
4454 if (info->attrs[NL80211_ATTR_MAC])
4455 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4456
4457 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4458 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4459 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4460 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4461 return -EINVAL;
4462
4463 if (!rdev->ops->del_station)
4464 return -EOPNOTSUPP;
4465
4466 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4467 params.subtype =
4468 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4469 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4470 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4471 return -EINVAL;
4472 } else {
4473 /* Default to Deauthentication frame */
4474 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4475 }
4476
4477 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4478 params.reason_code =
4479 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4480 if (params.reason_code == 0)
4481 return -EINVAL; /* 0 is reserved */
4482 } else {
4483 /* Default to reason code 2 */
4484 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4485 }
4486
4487 return rdev_del_station(rdev, dev, &params);
4488 }
4489
4490 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4491 int flags, struct net_device *dev,
4492 u8 *dst, u8 *next_hop,
4493 struct mpath_info *pinfo)
4494 {
4495 void *hdr;
4496 struct nlattr *pinfoattr;
4497
4498 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4499 if (!hdr)
4500 return -1;
4501
4502 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4503 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4504 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4505 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4506 goto nla_put_failure;
4507
4508 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4509 if (!pinfoattr)
4510 goto nla_put_failure;
4511 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4512 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4513 pinfo->frame_qlen))
4514 goto nla_put_failure;
4515 if (((pinfo->filled & MPATH_INFO_SN) &&
4516 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4517 ((pinfo->filled & MPATH_INFO_METRIC) &&
4518 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4519 pinfo->metric)) ||
4520 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4521 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4522 pinfo->exptime)) ||
4523 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4524 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4525 pinfo->flags)) ||
4526 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4527 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4528 pinfo->discovery_timeout)) ||
4529 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4530 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4531 pinfo->discovery_retries)))
4532 goto nla_put_failure;
4533
4534 nla_nest_end(msg, pinfoattr);
4535
4536 return genlmsg_end(msg, hdr);
4537
4538 nla_put_failure:
4539 genlmsg_cancel(msg, hdr);
4540 return -EMSGSIZE;
4541 }
4542
4543 static int nl80211_dump_mpath(struct sk_buff *skb,
4544 struct netlink_callback *cb)
4545 {
4546 struct mpath_info pinfo;
4547 struct cfg80211_registered_device *rdev;
4548 struct wireless_dev *wdev;
4549 u8 dst[ETH_ALEN];
4550 u8 next_hop[ETH_ALEN];
4551 int path_idx = cb->args[2];
4552 int err;
4553
4554 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4555 if (err)
4556 return err;
4557
4558 if (!rdev->ops->dump_mpath) {
4559 err = -EOPNOTSUPP;
4560 goto out_err;
4561 }
4562
4563 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4564 err = -EOPNOTSUPP;
4565 goto out_err;
4566 }
4567
4568 while (1) {
4569 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4570 next_hop, &pinfo);
4571 if (err == -ENOENT)
4572 break;
4573 if (err)
4574 goto out_err;
4575
4576 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4577 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4578 wdev->netdev, dst, next_hop,
4579 &pinfo) < 0)
4580 goto out;
4581
4582 path_idx++;
4583 }
4584
4585
4586 out:
4587 cb->args[2] = path_idx;
4588 err = skb->len;
4589 out_err:
4590 nl80211_finish_wdev_dump(rdev);
4591 return err;
4592 }
4593
4594 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4595 {
4596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4597 int err;
4598 struct net_device *dev = info->user_ptr[1];
4599 struct mpath_info pinfo;
4600 struct sk_buff *msg;
4601 u8 *dst = NULL;
4602 u8 next_hop[ETH_ALEN];
4603
4604 memset(&pinfo, 0, sizeof(pinfo));
4605
4606 if (!info->attrs[NL80211_ATTR_MAC])
4607 return -EINVAL;
4608
4609 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4610
4611 if (!rdev->ops->get_mpath)
4612 return -EOPNOTSUPP;
4613
4614 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4615 return -EOPNOTSUPP;
4616
4617 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4618 if (err)
4619 return err;
4620
4621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4622 if (!msg)
4623 return -ENOMEM;
4624
4625 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4626 dev, dst, next_hop, &pinfo) < 0) {
4627 nlmsg_free(msg);
4628 return -ENOBUFS;
4629 }
4630
4631 return genlmsg_reply(msg, info);
4632 }
4633
4634 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4635 {
4636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4637 struct net_device *dev = info->user_ptr[1];
4638 u8 *dst = NULL;
4639 u8 *next_hop = NULL;
4640
4641 if (!info->attrs[NL80211_ATTR_MAC])
4642 return -EINVAL;
4643
4644 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4645 return -EINVAL;
4646
4647 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4648 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4649
4650 if (!rdev->ops->change_mpath)
4651 return -EOPNOTSUPP;
4652
4653 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4654 return -EOPNOTSUPP;
4655
4656 return rdev_change_mpath(rdev, dev, dst, next_hop);
4657 }
4658
4659 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4660 {
4661 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4662 struct net_device *dev = info->user_ptr[1];
4663 u8 *dst = NULL;
4664 u8 *next_hop = NULL;
4665
4666 if (!info->attrs[NL80211_ATTR_MAC])
4667 return -EINVAL;
4668
4669 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4670 return -EINVAL;
4671
4672 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4673 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4674
4675 if (!rdev->ops->add_mpath)
4676 return -EOPNOTSUPP;
4677
4678 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4679 return -EOPNOTSUPP;
4680
4681 return rdev_add_mpath(rdev, dev, dst, next_hop);
4682 }
4683
4684 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4685 {
4686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4687 struct net_device *dev = info->user_ptr[1];
4688 u8 *dst = NULL;
4689
4690 if (info->attrs[NL80211_ATTR_MAC])
4691 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4692
4693 if (!rdev->ops->del_mpath)
4694 return -EOPNOTSUPP;
4695
4696 return rdev_del_mpath(rdev, dev, dst);
4697 }
4698
4699 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4700 {
4701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4702 int err;
4703 struct net_device *dev = info->user_ptr[1];
4704 struct mpath_info pinfo;
4705 struct sk_buff *msg;
4706 u8 *dst = NULL;
4707 u8 mpp[ETH_ALEN];
4708
4709 memset(&pinfo, 0, sizeof(pinfo));
4710
4711 if (!info->attrs[NL80211_ATTR_MAC])
4712 return -EINVAL;
4713
4714 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4715
4716 if (!rdev->ops->get_mpp)
4717 return -EOPNOTSUPP;
4718
4719 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4720 return -EOPNOTSUPP;
4721
4722 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4723 if (err)
4724 return err;
4725
4726 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4727 if (!msg)
4728 return -ENOMEM;
4729
4730 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4731 dev, dst, mpp, &pinfo) < 0) {
4732 nlmsg_free(msg);
4733 return -ENOBUFS;
4734 }
4735
4736 return genlmsg_reply(msg, info);
4737 }
4738
4739 static int nl80211_dump_mpp(struct sk_buff *skb,
4740 struct netlink_callback *cb)
4741 {
4742 struct mpath_info pinfo;
4743 struct cfg80211_registered_device *rdev;
4744 struct wireless_dev *wdev;
4745 u8 dst[ETH_ALEN];
4746 u8 mpp[ETH_ALEN];
4747 int path_idx = cb->args[2];
4748 int err;
4749
4750 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4751 if (err)
4752 return err;
4753
4754 if (!rdev->ops->dump_mpp) {
4755 err = -EOPNOTSUPP;
4756 goto out_err;
4757 }
4758
4759 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4760 err = -EOPNOTSUPP;
4761 goto out_err;
4762 }
4763
4764 while (1) {
4765 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4766 mpp, &pinfo);
4767 if (err == -ENOENT)
4768 break;
4769 if (err)
4770 goto out_err;
4771
4772 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4773 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4774 wdev->netdev, dst, mpp,
4775 &pinfo) < 0)
4776 goto out;
4777
4778 path_idx++;
4779 }
4780
4781 out:
4782 cb->args[2] = path_idx;
4783 err = skb->len;
4784 out_err:
4785 nl80211_finish_wdev_dump(rdev);
4786 return err;
4787 }
4788
4789 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4790 {
4791 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4792 struct net_device *dev = info->user_ptr[1];
4793 struct wireless_dev *wdev = dev->ieee80211_ptr;
4794 struct bss_parameters params;
4795 int err;
4796
4797 memset(&params, 0, sizeof(params));
4798 /* default to not changing parameters */
4799 params.use_cts_prot = -1;
4800 params.use_short_preamble = -1;
4801 params.use_short_slot_time = -1;
4802 params.ap_isolate = -1;
4803 params.ht_opmode = -1;
4804 params.p2p_ctwindow = -1;
4805 params.p2p_opp_ps = -1;
4806
4807 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4808 params.use_cts_prot =
4809 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4810 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4811 params.use_short_preamble =
4812 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4813 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4814 params.use_short_slot_time =
4815 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4816 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4817 params.basic_rates =
4818 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4819 params.basic_rates_len =
4820 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4821 }
4822 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4823 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4824 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4825 params.ht_opmode =
4826 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4827
4828 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4829 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4830 return -EINVAL;
4831 params.p2p_ctwindow =
4832 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4833 if (params.p2p_ctwindow < 0)
4834 return -EINVAL;
4835 if (params.p2p_ctwindow != 0 &&
4836 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4837 return -EINVAL;
4838 }
4839
4840 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4841 u8 tmp;
4842
4843 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4844 return -EINVAL;
4845 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4846 if (tmp > 1)
4847 return -EINVAL;
4848 params.p2p_opp_ps = tmp;
4849 if (params.p2p_opp_ps &&
4850 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4851 return -EINVAL;
4852 }
4853
4854 if (!rdev->ops->change_bss)
4855 return -EOPNOTSUPP;
4856
4857 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4858 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4859 return -EOPNOTSUPP;
4860
4861 wdev_lock(wdev);
4862 err = rdev_change_bss(rdev, dev, &params);
4863 wdev_unlock(wdev);
4864
4865 return err;
4866 }
4867
4868 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4869 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4870 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4871 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4872 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4873 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4874 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4875 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4876 };
4877
4878 static int parse_reg_rule(struct nlattr *tb[],
4879 struct ieee80211_reg_rule *reg_rule)
4880 {
4881 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4882 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4883
4884 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4885 return -EINVAL;
4886 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4887 return -EINVAL;
4888 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4889 return -EINVAL;
4890 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4891 return -EINVAL;
4892 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4893 return -EINVAL;
4894
4895 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4896
4897 freq_range->start_freq_khz =
4898 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4899 freq_range->end_freq_khz =
4900 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4901 freq_range->max_bandwidth_khz =
4902 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4903
4904 power_rule->max_eirp =
4905 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4906
4907 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4908 power_rule->max_antenna_gain =
4909 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4910
4911 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4912 reg_rule->dfs_cac_ms =
4913 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4914
4915 return 0;
4916 }
4917
4918 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4919 {
4920 char *data = NULL;
4921 enum nl80211_user_reg_hint_type user_reg_hint_type;
4922
4923 /*
4924 * You should only get this when cfg80211 hasn't yet initialized
4925 * completely when built-in to the kernel right between the time
4926 * window between nl80211_init() and regulatory_init(), if that is
4927 * even possible.
4928 */
4929 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4930 return -EINPROGRESS;
4931
4932 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4933 user_reg_hint_type =
4934 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4935 else
4936 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4937
4938 switch (user_reg_hint_type) {
4939 case NL80211_USER_REG_HINT_USER:
4940 case NL80211_USER_REG_HINT_CELL_BASE:
4941 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4942 return -EINVAL;
4943
4944 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4945 return regulatory_hint_user(data, user_reg_hint_type);
4946 case NL80211_USER_REG_HINT_INDOOR:
4947 return regulatory_hint_indoor_user();
4948 default:
4949 return -EINVAL;
4950 }
4951 }
4952
4953 static int nl80211_get_mesh_config(struct sk_buff *skb,
4954 struct genl_info *info)
4955 {
4956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4957 struct net_device *dev = info->user_ptr[1];
4958 struct wireless_dev *wdev = dev->ieee80211_ptr;
4959 struct mesh_config cur_params;
4960 int err = 0;
4961 void *hdr;
4962 struct nlattr *pinfoattr;
4963 struct sk_buff *msg;
4964
4965 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4966 return -EOPNOTSUPP;
4967
4968 if (!rdev->ops->get_mesh_config)
4969 return -EOPNOTSUPP;
4970
4971 wdev_lock(wdev);
4972 /* If not connected, get default parameters */
4973 if (!wdev->mesh_id_len)
4974 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4975 else
4976 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4977 wdev_unlock(wdev);
4978
4979 if (err)
4980 return err;
4981
4982 /* Draw up a netlink message to send back */
4983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4984 if (!msg)
4985 return -ENOMEM;
4986 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4987 NL80211_CMD_GET_MESH_CONFIG);
4988 if (!hdr)
4989 goto out;
4990 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4991 if (!pinfoattr)
4992 goto nla_put_failure;
4993 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4994 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4995 cur_params.dot11MeshRetryTimeout) ||
4996 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4997 cur_params.dot11MeshConfirmTimeout) ||
4998 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4999 cur_params.dot11MeshHoldingTimeout) ||
5000 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5001 cur_params.dot11MeshMaxPeerLinks) ||
5002 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5003 cur_params.dot11MeshMaxRetries) ||
5004 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5005 cur_params.dot11MeshTTL) ||
5006 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5007 cur_params.element_ttl) ||
5008 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5009 cur_params.auto_open_plinks) ||
5010 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5011 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5012 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5013 cur_params.dot11MeshHWMPmaxPREQretries) ||
5014 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5015 cur_params.path_refresh_time) ||
5016 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5017 cur_params.min_discovery_timeout) ||
5018 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5019 cur_params.dot11MeshHWMPactivePathTimeout) ||
5020 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5021 cur_params.dot11MeshHWMPpreqMinInterval) ||
5022 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5023 cur_params.dot11MeshHWMPperrMinInterval) ||
5024 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5025 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5026 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5027 cur_params.dot11MeshHWMPRootMode) ||
5028 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5029 cur_params.dot11MeshHWMPRannInterval) ||
5030 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5031 cur_params.dot11MeshGateAnnouncementProtocol) ||
5032 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5033 cur_params.dot11MeshForwarding) ||
5034 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5035 cur_params.rssi_threshold) ||
5036 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5037 cur_params.ht_opmode) ||
5038 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5039 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5040 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5041 cur_params.dot11MeshHWMProotInterval) ||
5042 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5043 cur_params.dot11MeshHWMPconfirmationInterval) ||
5044 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5045 cur_params.power_mode) ||
5046 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5047 cur_params.dot11MeshAwakeWindowDuration) ||
5048 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5049 cur_params.plink_timeout))
5050 goto nla_put_failure;
5051 nla_nest_end(msg, pinfoattr);
5052 genlmsg_end(msg, hdr);
5053 return genlmsg_reply(msg, info);
5054
5055 nla_put_failure:
5056 genlmsg_cancel(msg, hdr);
5057 out:
5058 nlmsg_free(msg);
5059 return -ENOBUFS;
5060 }
5061
5062 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5063 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5064 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5065 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5066 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5067 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5068 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5069 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5070 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5071 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5072 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5073 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5074 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5075 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5076 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5077 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5078 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5079 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5080 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5081 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5082 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5083 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5084 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5085 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5086 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5087 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5088 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5089 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5090 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5091 };
5092
5093 static const struct nla_policy
5094 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5095 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5096 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5097 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5098 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5099 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5100 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5101 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5102 .len = IEEE80211_MAX_DATA_LEN },
5103 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5104 };
5105
5106 static int nl80211_parse_mesh_config(struct genl_info *info,
5107 struct mesh_config *cfg,
5108 u32 *mask_out)
5109 {
5110 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5111 u32 mask = 0;
5112
5113 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5114 do { \
5115 if (tb[attr]) { \
5116 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5117 return -EINVAL; \
5118 cfg->param = fn(tb[attr]); \
5119 mask |= (1 << (attr - 1)); \
5120 } \
5121 } while (0)
5122
5123
5124 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5125 return -EINVAL;
5126 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5127 info->attrs[NL80211_ATTR_MESH_CONFIG],
5128 nl80211_meshconf_params_policy))
5129 return -EINVAL;
5130
5131 /* This makes sure that there aren't more than 32 mesh config
5132 * parameters (otherwise our bitfield scheme would not work.) */
5133 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5134
5135 /* Fill in the params struct */
5136 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5137 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5138 nla_get_u16);
5139 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5140 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5141 nla_get_u16);
5142 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5143 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5144 nla_get_u16);
5145 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5146 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5147 nla_get_u16);
5148 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5149 mask, NL80211_MESHCONF_MAX_RETRIES,
5150 nla_get_u8);
5151 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5152 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5154 mask, NL80211_MESHCONF_ELEMENT_TTL,
5155 nla_get_u8);
5156 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5157 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5158 nla_get_u8);
5159 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5160 1, 255, mask,
5161 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5162 nla_get_u32);
5163 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5164 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5165 nla_get_u8);
5166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5167 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5168 nla_get_u32);
5169 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5170 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5171 nla_get_u16);
5172 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5173 1, 65535, mask,
5174 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5175 nla_get_u32);
5176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5177 1, 65535, mask,
5178 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5179 nla_get_u16);
5180 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5181 1, 65535, mask,
5182 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5183 nla_get_u16);
5184 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5185 dot11MeshHWMPnetDiameterTraversalTime,
5186 1, 65535, mask,
5187 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5188 nla_get_u16);
5189 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5190 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5191 nla_get_u8);
5192 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5193 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5194 nla_get_u16);
5195 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5196 dot11MeshGateAnnouncementProtocol, 0, 1,
5197 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5198 nla_get_u8);
5199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5200 mask, NL80211_MESHCONF_FORWARDING,
5201 nla_get_u8);
5202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5203 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5204 nla_get_s32);
5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5206 mask, NL80211_MESHCONF_HT_OPMODE,
5207 nla_get_u16);
5208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5209 1, 65535, mask,
5210 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5211 nla_get_u32);
5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5213 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5214 nla_get_u16);
5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5216 dot11MeshHWMPconfirmationInterval,
5217 1, 65535, mask,
5218 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5219 nla_get_u16);
5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5221 NL80211_MESH_POWER_ACTIVE,
5222 NL80211_MESH_POWER_MAX,
5223 mask, NL80211_MESHCONF_POWER_MODE,
5224 nla_get_u32);
5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5226 0, 65535, mask,
5227 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5229 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5230 nla_get_u32);
5231 if (mask_out)
5232 *mask_out = mask;
5233
5234 return 0;
5235
5236 #undef FILL_IN_MESH_PARAM_IF_SET
5237 }
5238
5239 static int nl80211_parse_mesh_setup(struct genl_info *info,
5240 struct mesh_setup *setup)
5241 {
5242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5243 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5244
5245 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5246 return -EINVAL;
5247 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5248 info->attrs[NL80211_ATTR_MESH_SETUP],
5249 nl80211_mesh_setup_params_policy))
5250 return -EINVAL;
5251
5252 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5253 setup->sync_method =
5254 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5255 IEEE80211_SYNC_METHOD_VENDOR :
5256 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5257
5258 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5259 setup->path_sel_proto =
5260 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5261 IEEE80211_PATH_PROTOCOL_VENDOR :
5262 IEEE80211_PATH_PROTOCOL_HWMP;
5263
5264 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5265 setup->path_metric =
5266 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5267 IEEE80211_PATH_METRIC_VENDOR :
5268 IEEE80211_PATH_METRIC_AIRTIME;
5269
5270
5271 if (tb[NL80211_MESH_SETUP_IE]) {
5272 struct nlattr *ieattr =
5273 tb[NL80211_MESH_SETUP_IE];
5274 if (!is_valid_ie_attr(ieattr))
5275 return -EINVAL;
5276 setup->ie = nla_data(ieattr);
5277 setup->ie_len = nla_len(ieattr);
5278 }
5279 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5280 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5281 return -EINVAL;
5282 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5283 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5284 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5285 if (setup->is_secure)
5286 setup->user_mpm = true;
5287
5288 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5289 if (!setup->user_mpm)
5290 return -EINVAL;
5291 setup->auth_id =
5292 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5293 }
5294
5295 return 0;
5296 }
5297
5298 static int nl80211_update_mesh_config(struct sk_buff *skb,
5299 struct genl_info *info)
5300 {
5301 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5302 struct net_device *dev = info->user_ptr[1];
5303 struct wireless_dev *wdev = dev->ieee80211_ptr;
5304 struct mesh_config cfg;
5305 u32 mask;
5306 int err;
5307
5308 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5309 return -EOPNOTSUPP;
5310
5311 if (!rdev->ops->update_mesh_config)
5312 return -EOPNOTSUPP;
5313
5314 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5315 if (err)
5316 return err;
5317
5318 wdev_lock(wdev);
5319 if (!wdev->mesh_id_len)
5320 err = -ENOLINK;
5321
5322 if (!err)
5323 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5324
5325 wdev_unlock(wdev);
5326
5327 return err;
5328 }
5329
5330 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5331 {
5332 const struct ieee80211_regdomain *regdom;
5333 struct sk_buff *msg;
5334 void *hdr = NULL;
5335 struct nlattr *nl_reg_rules;
5336 unsigned int i;
5337
5338 if (!cfg80211_regdomain)
5339 return -EINVAL;
5340
5341 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5342 if (!msg)
5343 return -ENOBUFS;
5344
5345 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5346 NL80211_CMD_GET_REG);
5347 if (!hdr)
5348 goto put_failure;
5349
5350 if (reg_last_request_cell_base() &&
5351 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5352 NL80211_USER_REG_HINT_CELL_BASE))
5353 goto nla_put_failure;
5354
5355 rcu_read_lock();
5356 regdom = rcu_dereference(cfg80211_regdomain);
5357
5358 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5359 (regdom->dfs_region &&
5360 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5361 goto nla_put_failure_rcu;
5362
5363 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5364 if (!nl_reg_rules)
5365 goto nla_put_failure_rcu;
5366
5367 for (i = 0; i < regdom->n_reg_rules; i++) {
5368 struct nlattr *nl_reg_rule;
5369 const struct ieee80211_reg_rule *reg_rule;
5370 const struct ieee80211_freq_range *freq_range;
5371 const struct ieee80211_power_rule *power_rule;
5372 unsigned int max_bandwidth_khz;
5373
5374 reg_rule = &regdom->reg_rules[i];
5375 freq_range = &reg_rule->freq_range;
5376 power_rule = &reg_rule->power_rule;
5377
5378 nl_reg_rule = nla_nest_start(msg, i);
5379 if (!nl_reg_rule)
5380 goto nla_put_failure_rcu;
5381
5382 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5383 if (!max_bandwidth_khz)
5384 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5385 reg_rule);
5386
5387 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5388 reg_rule->flags) ||
5389 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5390 freq_range->start_freq_khz) ||
5391 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5392 freq_range->end_freq_khz) ||
5393 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5394 max_bandwidth_khz) ||
5395 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5396 power_rule->max_antenna_gain) ||
5397 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5398 power_rule->max_eirp) ||
5399 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5400 reg_rule->dfs_cac_ms))
5401 goto nla_put_failure_rcu;
5402
5403 nla_nest_end(msg, nl_reg_rule);
5404 }
5405 rcu_read_unlock();
5406
5407 nla_nest_end(msg, nl_reg_rules);
5408
5409 genlmsg_end(msg, hdr);
5410 return genlmsg_reply(msg, info);
5411
5412 nla_put_failure_rcu:
5413 rcu_read_unlock();
5414 nla_put_failure:
5415 genlmsg_cancel(msg, hdr);
5416 put_failure:
5417 nlmsg_free(msg);
5418 return -EMSGSIZE;
5419 }
5420
5421 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5422 {
5423 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5424 struct nlattr *nl_reg_rule;
5425 char *alpha2 = NULL;
5426 int rem_reg_rules = 0, r = 0;
5427 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5428 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5429 struct ieee80211_regdomain *rd = NULL;
5430
5431 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5432 return -EINVAL;
5433
5434 if (!info->attrs[NL80211_ATTR_REG_RULES])
5435 return -EINVAL;
5436
5437 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5438
5439 if (info->attrs[NL80211_ATTR_DFS_REGION])
5440 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5441
5442 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5443 rem_reg_rules) {
5444 num_rules++;
5445 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5446 return -EINVAL;
5447 }
5448
5449 if (!reg_is_valid_request(alpha2))
5450 return -EINVAL;
5451
5452 size_of_regd = sizeof(struct ieee80211_regdomain) +
5453 num_rules * sizeof(struct ieee80211_reg_rule);
5454
5455 rd = kzalloc(size_of_regd, GFP_KERNEL);
5456 if (!rd)
5457 return -ENOMEM;
5458
5459 rd->n_reg_rules = num_rules;
5460 rd->alpha2[0] = alpha2[0];
5461 rd->alpha2[1] = alpha2[1];
5462
5463 /*
5464 * Disable DFS master mode if the DFS region was
5465 * not supported or known on this kernel.
5466 */
5467 if (reg_supported_dfs_region(dfs_region))
5468 rd->dfs_region = dfs_region;
5469
5470 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5471 rem_reg_rules) {
5472 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5473 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5474 reg_rule_policy);
5475 if (r)
5476 goto bad_reg;
5477 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5478 if (r)
5479 goto bad_reg;
5480
5481 rule_idx++;
5482
5483 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5484 r = -EINVAL;
5485 goto bad_reg;
5486 }
5487 }
5488
5489 r = set_regdom(rd);
5490 /* set_regdom took ownership */
5491 rd = NULL;
5492
5493 bad_reg:
5494 kfree(rd);
5495 return r;
5496 }
5497
5498 static int validate_scan_freqs(struct nlattr *freqs)
5499 {
5500 struct nlattr *attr1, *attr2;
5501 int n_channels = 0, tmp1, tmp2;
5502
5503 nla_for_each_nested(attr1, freqs, tmp1) {
5504 n_channels++;
5505 /*
5506 * Some hardware has a limited channel list for
5507 * scanning, and it is pretty much nonsensical
5508 * to scan for a channel twice, so disallow that
5509 * and don't require drivers to check that the
5510 * channel list they get isn't longer than what
5511 * they can scan, as long as they can scan all
5512 * the channels they registered at once.
5513 */
5514 nla_for_each_nested(attr2, freqs, tmp2)
5515 if (attr1 != attr2 &&
5516 nla_get_u32(attr1) == nla_get_u32(attr2))
5517 return 0;
5518 }
5519
5520 return n_channels;
5521 }
5522
5523 static int nl80211_parse_random_mac(struct nlattr **attrs,
5524 u8 *mac_addr, u8 *mac_addr_mask)
5525 {
5526 int i;
5527
5528 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5529 memset(mac_addr, 0, ETH_ALEN);
5530 memset(mac_addr_mask, 0, ETH_ALEN);
5531 mac_addr[0] = 0x2;
5532 mac_addr_mask[0] = 0x3;
5533
5534 return 0;
5535 }
5536
5537 /* need both or none */
5538 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5539 return -EINVAL;
5540
5541 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5542 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5543
5544 /* don't allow or configure an mcast address */
5545 if (!is_multicast_ether_addr(mac_addr_mask) ||
5546 is_multicast_ether_addr(mac_addr))
5547 return -EINVAL;
5548
5549 /*
5550 * allow users to pass a MAC address that has bits set outside
5551 * of the mask, but don't bother drivers with having to deal
5552 * with such bits
5553 */
5554 for (i = 0; i < ETH_ALEN; i++)
5555 mac_addr[i] &= mac_addr_mask[i];
5556
5557 return 0;
5558 }
5559
5560 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5561 {
5562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5563 struct wireless_dev *wdev = info->user_ptr[1];
5564 struct cfg80211_scan_request *request;
5565 struct nlattr *attr;
5566 struct wiphy *wiphy;
5567 int err, tmp, n_ssids = 0, n_channels, i;
5568 size_t ie_len;
5569
5570 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5571 return -EINVAL;
5572
5573 wiphy = &rdev->wiphy;
5574
5575 if (!rdev->ops->scan)
5576 return -EOPNOTSUPP;
5577
5578 if (rdev->scan_req || rdev->scan_msg) {
5579 err = -EBUSY;
5580 goto unlock;
5581 }
5582
5583 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5584 n_channels = validate_scan_freqs(
5585 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5586 if (!n_channels) {
5587 err = -EINVAL;
5588 goto unlock;
5589 }
5590 } else {
5591 n_channels = ieee80211_get_num_supported_channels(wiphy);
5592 }
5593
5594 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5595 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5596 n_ssids++;
5597
5598 if (n_ssids > wiphy->max_scan_ssids) {
5599 err = -EINVAL;
5600 goto unlock;
5601 }
5602
5603 if (info->attrs[NL80211_ATTR_IE])
5604 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5605 else
5606 ie_len = 0;
5607
5608 if (ie_len > wiphy->max_scan_ie_len) {
5609 err = -EINVAL;
5610 goto unlock;
5611 }
5612
5613 request = kzalloc(sizeof(*request)
5614 + sizeof(*request->ssids) * n_ssids
5615 + sizeof(*request->channels) * n_channels
5616 + ie_len, GFP_KERNEL);
5617 if (!request) {
5618 err = -ENOMEM;
5619 goto unlock;
5620 }
5621
5622 if (n_ssids)
5623 request->ssids = (void *)&request->channels[n_channels];
5624 request->n_ssids = n_ssids;
5625 if (ie_len) {
5626 if (request->ssids)
5627 request->ie = (void *)(request->ssids + n_ssids);
5628 else
5629 request->ie = (void *)(request->channels + n_channels);
5630 }
5631
5632 i = 0;
5633 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5634 /* user specified, bail out if channel not found */
5635 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5636 struct ieee80211_channel *chan;
5637
5638 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5639
5640 if (!chan) {
5641 err = -EINVAL;
5642 goto out_free;
5643 }
5644
5645 /* ignore disabled channels */
5646 if (chan->flags & IEEE80211_CHAN_DISABLED)
5647 continue;
5648
5649 request->channels[i] = chan;
5650 i++;
5651 }
5652 } else {
5653 enum ieee80211_band band;
5654
5655 /* all channels */
5656 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5657 int j;
5658 if (!wiphy->bands[band])
5659 continue;
5660 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5661 struct ieee80211_channel *chan;
5662
5663 chan = &wiphy->bands[band]->channels[j];
5664
5665 if (chan->flags & IEEE80211_CHAN_DISABLED)
5666 continue;
5667
5668 request->channels[i] = chan;
5669 i++;
5670 }
5671 }
5672 }
5673
5674 if (!i) {
5675 err = -EINVAL;
5676 goto out_free;
5677 }
5678
5679 request->n_channels = i;
5680
5681 i = 0;
5682 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5683 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5684 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5685 err = -EINVAL;
5686 goto out_free;
5687 }
5688 request->ssids[i].ssid_len = nla_len(attr);
5689 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5690 i++;
5691 }
5692 }
5693
5694 if (info->attrs[NL80211_ATTR_IE]) {
5695 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5696 memcpy((void *)request->ie,
5697 nla_data(info->attrs[NL80211_ATTR_IE]),
5698 request->ie_len);
5699 }
5700
5701 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5702 if (wiphy->bands[i])
5703 request->rates[i] =
5704 (1 << wiphy->bands[i]->n_bitrates) - 1;
5705
5706 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5707 nla_for_each_nested(attr,
5708 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5709 tmp) {
5710 enum ieee80211_band band = nla_type(attr);
5711
5712 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5713 err = -EINVAL;
5714 goto out_free;
5715 }
5716
5717 if (!wiphy->bands[band])
5718 continue;
5719
5720 err = ieee80211_get_ratemask(wiphy->bands[band],
5721 nla_data(attr),
5722 nla_len(attr),
5723 &request->rates[band]);
5724 if (err)
5725 goto out_free;
5726 }
5727 }
5728
5729 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5730 request->flags = nla_get_u32(
5731 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5732 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5733 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5734 err = -EOPNOTSUPP;
5735 goto out_free;
5736 }
5737
5738 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5739 if (!(wiphy->features &
5740 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5741 err = -EOPNOTSUPP;
5742 goto out_free;
5743 }
5744
5745 if (wdev->current_bss) {
5746 err = -EOPNOTSUPP;
5747 goto out_free;
5748 }
5749
5750 err = nl80211_parse_random_mac(info->attrs,
5751 request->mac_addr,
5752 request->mac_addr_mask);
5753 if (err)
5754 goto out_free;
5755 }
5756 }
5757
5758 request->no_cck =
5759 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5760
5761 request->wdev = wdev;
5762 request->wiphy = &rdev->wiphy;
5763 request->scan_start = jiffies;
5764
5765 rdev->scan_req = request;
5766 err = rdev_scan(rdev, request);
5767
5768 if (!err) {
5769 nl80211_send_scan_start(rdev, wdev);
5770 if (wdev->netdev)
5771 dev_hold(wdev->netdev);
5772 } else {
5773 out_free:
5774 rdev->scan_req = NULL;
5775 kfree(request);
5776 }
5777
5778 unlock:
5779 return err;
5780 }
5781
5782 static struct cfg80211_sched_scan_request *
5783 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5784 struct nlattr **attrs)
5785 {
5786 struct cfg80211_sched_scan_request *request;
5787 struct nlattr *attr;
5788 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5789 u32 interval;
5790 enum ieee80211_band band;
5791 size_t ie_len;
5792 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5793 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5794
5795 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5796 return ERR_PTR(-EINVAL);
5797
5798 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5799 return ERR_PTR(-EINVAL);
5800
5801 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5802 if (interval == 0)
5803 return ERR_PTR(-EINVAL);
5804
5805 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5806 n_channels = validate_scan_freqs(
5807 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5808 if (!n_channels)
5809 return ERR_PTR(-EINVAL);
5810 } else {
5811 n_channels = ieee80211_get_num_supported_channels(wiphy);
5812 }
5813
5814 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5815 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5816 tmp)
5817 n_ssids++;
5818
5819 if (n_ssids > wiphy->max_sched_scan_ssids)
5820 return ERR_PTR(-EINVAL);
5821
5822 /*
5823 * First, count the number of 'real' matchsets. Due to an issue with
5824 * the old implementation, matchsets containing only the RSSI attribute
5825 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5826 * RSSI for all matchsets, rather than their own matchset for reporting
5827 * all APs with a strong RSSI. This is needed to be compatible with
5828 * older userspace that treated a matchset with only the RSSI as the
5829 * global RSSI for all other matchsets - if there are other matchsets.
5830 */
5831 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5832 nla_for_each_nested(attr,
5833 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5834 tmp) {
5835 struct nlattr *rssi;
5836
5837 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5838 nla_data(attr), nla_len(attr),
5839 nl80211_match_policy);
5840 if (err)
5841 return ERR_PTR(err);
5842 /* add other standalone attributes here */
5843 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5844 n_match_sets++;
5845 continue;
5846 }
5847 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5848 if (rssi)
5849 default_match_rssi = nla_get_s32(rssi);
5850 }
5851 }
5852
5853 /* However, if there's no other matchset, add the RSSI one */
5854 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5855 n_match_sets = 1;
5856
5857 if (n_match_sets > wiphy->max_match_sets)
5858 return ERR_PTR(-EINVAL);
5859
5860 if (attrs[NL80211_ATTR_IE])
5861 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5862 else
5863 ie_len = 0;
5864
5865 if (ie_len > wiphy->max_sched_scan_ie_len)
5866 return ERR_PTR(-EINVAL);
5867
5868 request = kzalloc(sizeof(*request)
5869 + sizeof(*request->ssids) * n_ssids
5870 + sizeof(*request->match_sets) * n_match_sets
5871 + sizeof(*request->channels) * n_channels
5872 + ie_len, GFP_KERNEL);
5873 if (!request)
5874 return ERR_PTR(-ENOMEM);
5875
5876 if (n_ssids)
5877 request->ssids = (void *)&request->channels[n_channels];
5878 request->n_ssids = n_ssids;
5879 if (ie_len) {
5880 if (request->ssids)
5881 request->ie = (void *)(request->ssids + n_ssids);
5882 else
5883 request->ie = (void *)(request->channels + n_channels);
5884 }
5885
5886 if (n_match_sets) {
5887 if (request->ie)
5888 request->match_sets = (void *)(request->ie + ie_len);
5889 else if (request->ssids)
5890 request->match_sets =
5891 (void *)(request->ssids + n_ssids);
5892 else
5893 request->match_sets =
5894 (void *)(request->channels + n_channels);
5895 }
5896 request->n_match_sets = n_match_sets;
5897
5898 i = 0;
5899 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5900 /* user specified, bail out if channel not found */
5901 nla_for_each_nested(attr,
5902 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5903 tmp) {
5904 struct ieee80211_channel *chan;
5905
5906 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5907
5908 if (!chan) {
5909 err = -EINVAL;
5910 goto out_free;
5911 }
5912
5913 /* ignore disabled channels */
5914 if (chan->flags & IEEE80211_CHAN_DISABLED)
5915 continue;
5916
5917 request->channels[i] = chan;
5918 i++;
5919 }
5920 } else {
5921 /* all channels */
5922 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5923 int j;
5924 if (!wiphy->bands[band])
5925 continue;
5926 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5927 struct ieee80211_channel *chan;
5928
5929 chan = &wiphy->bands[band]->channels[j];
5930
5931 if (chan->flags & IEEE80211_CHAN_DISABLED)
5932 continue;
5933
5934 request->channels[i] = chan;
5935 i++;
5936 }
5937 }
5938 }
5939
5940 if (!i) {
5941 err = -EINVAL;
5942 goto out_free;
5943 }
5944
5945 request->n_channels = i;
5946
5947 i = 0;
5948 if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
5949 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5950 tmp) {
5951 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5952 err = -EINVAL;
5953 goto out_free;
5954 }
5955 request->ssids[i].ssid_len = nla_len(attr);
5956 memcpy(request->ssids[i].ssid, nla_data(attr),
5957 nla_len(attr));
5958 i++;
5959 }
5960 }
5961
5962 i = 0;
5963 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5964 nla_for_each_nested(attr,
5965 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5966 tmp) {
5967 struct nlattr *ssid, *rssi;
5968
5969 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5970 nla_data(attr), nla_len(attr),
5971 nl80211_match_policy);
5972 if (err)
5973 goto out_free;
5974 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5975 if (ssid) {
5976 if (WARN_ON(i >= n_match_sets)) {
5977 /* this indicates a programming error,
5978 * the loop above should have verified
5979 * things properly
5980 */
5981 err = -EINVAL;
5982 goto out_free;
5983 }
5984
5985 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5986 err = -EINVAL;
5987 goto out_free;
5988 }
5989 memcpy(request->match_sets[i].ssid.ssid,
5990 nla_data(ssid), nla_len(ssid));
5991 request->match_sets[i].ssid.ssid_len =
5992 nla_len(ssid);
5993 /* special attribute - old implemenation w/a */
5994 request->match_sets[i].rssi_thold =
5995 default_match_rssi;
5996 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5997 if (rssi)
5998 request->match_sets[i].rssi_thold =
5999 nla_get_s32(rssi);
6000 }
6001 i++;
6002 }
6003
6004 /* there was no other matchset, so the RSSI one is alone */
6005 if (i == 0)
6006 request->match_sets[0].rssi_thold = default_match_rssi;
6007
6008 request->min_rssi_thold = INT_MAX;
6009 for (i = 0; i < n_match_sets; i++)
6010 request->min_rssi_thold =
6011 min(request->match_sets[i].rssi_thold,
6012 request->min_rssi_thold);
6013 } else {
6014 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6015 }
6016
6017 if (ie_len) {
6018 request->ie_len = ie_len;
6019 memcpy((void *)request->ie,
6020 nla_data(attrs[NL80211_ATTR_IE]),
6021 request->ie_len);
6022 }
6023
6024 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6025 request->flags = nla_get_u32(
6026 attrs[NL80211_ATTR_SCAN_FLAGS]);
6027 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6028 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6029 err = -EOPNOTSUPP;
6030 goto out_free;
6031 }
6032
6033 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6034 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6035
6036 if (!wdev) /* must be net-detect */
6037 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6038
6039 if (!(wiphy->features & flg)) {
6040 err = -EOPNOTSUPP;
6041 goto out_free;
6042 }
6043
6044 if (wdev && wdev->current_bss) {
6045 err = -EOPNOTSUPP;
6046 goto out_free;
6047 }
6048
6049 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6050 request->mac_addr_mask);
6051 if (err)
6052 goto out_free;
6053 }
6054 }
6055
6056 request->interval = interval;
6057 request->scan_start = jiffies;
6058
6059 return request;
6060
6061 out_free:
6062 kfree(request);
6063 return ERR_PTR(err);
6064 }
6065
6066 static int nl80211_start_sched_scan(struct sk_buff *skb,
6067 struct genl_info *info)
6068 {
6069 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6070 struct net_device *dev = info->user_ptr[1];
6071 struct wireless_dev *wdev = dev->ieee80211_ptr;
6072 int err;
6073
6074 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6075 !rdev->ops->sched_scan_start)
6076 return -EOPNOTSUPP;
6077
6078 if (rdev->sched_scan_req)
6079 return -EINPROGRESS;
6080
6081 rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6082 info->attrs);
6083 err = PTR_ERR_OR_ZERO(rdev->sched_scan_req);
6084 if (err)
6085 goto out_err;
6086
6087 err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req);
6088 if (err)
6089 goto out_free;
6090
6091 rdev->sched_scan_req->dev = dev;
6092 rdev->sched_scan_req->wiphy = &rdev->wiphy;
6093
6094 nl80211_send_sched_scan(rdev, dev,
6095 NL80211_CMD_START_SCHED_SCAN);
6096 return 0;
6097
6098 out_free:
6099 kfree(rdev->sched_scan_req);
6100 out_err:
6101 rdev->sched_scan_req = NULL;
6102 return err;
6103 }
6104
6105 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6106 struct genl_info *info)
6107 {
6108 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6109
6110 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6111 !rdev->ops->sched_scan_stop)
6112 return -EOPNOTSUPP;
6113
6114 return __cfg80211_stop_sched_scan(rdev, false);
6115 }
6116
6117 static int nl80211_start_radar_detection(struct sk_buff *skb,
6118 struct genl_info *info)
6119 {
6120 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6121 struct net_device *dev = info->user_ptr[1];
6122 struct wireless_dev *wdev = dev->ieee80211_ptr;
6123 struct cfg80211_chan_def chandef;
6124 enum nl80211_dfs_regions dfs_region;
6125 unsigned int cac_time_ms;
6126 int err;
6127
6128 dfs_region = reg_get_dfs_region(wdev->wiphy);
6129 if (dfs_region == NL80211_DFS_UNSET)
6130 return -EINVAL;
6131
6132 err = nl80211_parse_chandef(rdev, info, &chandef);
6133 if (err)
6134 return err;
6135
6136 if (netif_carrier_ok(dev))
6137 return -EBUSY;
6138
6139 if (wdev->cac_started)
6140 return -EBUSY;
6141
6142 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6143 wdev->iftype);
6144 if (err < 0)
6145 return err;
6146
6147 if (err == 0)
6148 return -EINVAL;
6149
6150 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6151 return -EINVAL;
6152
6153 if (!rdev->ops->start_radar_detection)
6154 return -EOPNOTSUPP;
6155
6156 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6157 if (WARN_ON(!cac_time_ms))
6158 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6159
6160 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6161 cac_time_ms);
6162 if (!err) {
6163 wdev->chandef = chandef;
6164 wdev->cac_started = true;
6165 wdev->cac_start_time = jiffies;
6166 wdev->cac_time_ms = cac_time_ms;
6167 }
6168 return err;
6169 }
6170
6171 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6172 {
6173 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6174 struct net_device *dev = info->user_ptr[1];
6175 struct wireless_dev *wdev = dev->ieee80211_ptr;
6176 struct cfg80211_csa_settings params;
6177 /* csa_attrs is defined static to avoid waste of stack size - this
6178 * function is called under RTNL lock, so this should not be a problem.
6179 */
6180 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6181 int err;
6182 bool need_new_beacon = false;
6183 int len, i;
6184 u32 cs_count;
6185
6186 if (!rdev->ops->channel_switch ||
6187 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6188 return -EOPNOTSUPP;
6189
6190 switch (dev->ieee80211_ptr->iftype) {
6191 case NL80211_IFTYPE_AP:
6192 case NL80211_IFTYPE_P2P_GO:
6193 need_new_beacon = true;
6194
6195 /* useless if AP is not running */
6196 if (!wdev->beacon_interval)
6197 return -ENOTCONN;
6198 break;
6199 case NL80211_IFTYPE_ADHOC:
6200 if (!wdev->ssid_len)
6201 return -ENOTCONN;
6202 break;
6203 case NL80211_IFTYPE_MESH_POINT:
6204 if (!wdev->mesh_id_len)
6205 return -ENOTCONN;
6206 break;
6207 default:
6208 return -EOPNOTSUPP;
6209 }
6210
6211 memset(&params, 0, sizeof(params));
6212
6213 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6214 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6215 return -EINVAL;
6216
6217 /* only important for AP, IBSS and mesh create IEs internally */
6218 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6219 return -EINVAL;
6220
6221 /* Even though the attribute is u32, the specification says
6222 * u8, so let's make sure we don't overflow.
6223 */
6224 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6225 if (cs_count > 255)
6226 return -EINVAL;
6227
6228 params.count = cs_count;
6229
6230 if (!need_new_beacon)
6231 goto skip_beacons;
6232
6233 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6234 if (err)
6235 return err;
6236
6237 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6238 info->attrs[NL80211_ATTR_CSA_IES],
6239 nl80211_policy);
6240 if (err)
6241 return err;
6242
6243 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6244 if (err)
6245 return err;
6246
6247 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6248 return -EINVAL;
6249
6250 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6251 if (!len || (len % sizeof(u16)))
6252 return -EINVAL;
6253
6254 params.n_counter_offsets_beacon = len / sizeof(u16);
6255 if (rdev->wiphy.max_num_csa_counters &&
6256 (params.n_counter_offsets_beacon >
6257 rdev->wiphy.max_num_csa_counters))
6258 return -EINVAL;
6259
6260 params.counter_offsets_beacon =
6261 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6262
6263 /* sanity checks - counters should fit and be the same */
6264 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6265 u16 offset = params.counter_offsets_beacon[i];
6266
6267 if (offset >= params.beacon_csa.tail_len)
6268 return -EINVAL;
6269
6270 if (params.beacon_csa.tail[offset] != params.count)
6271 return -EINVAL;
6272 }
6273
6274 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6275 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6276 if (!len || (len % sizeof(u16)))
6277 return -EINVAL;
6278
6279 params.n_counter_offsets_presp = len / sizeof(u16);
6280 if (rdev->wiphy.max_num_csa_counters &&
6281 (params.n_counter_offsets_beacon >
6282 rdev->wiphy.max_num_csa_counters))
6283 return -EINVAL;
6284
6285 params.counter_offsets_presp =
6286 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6287
6288 /* sanity checks - counters should fit and be the same */
6289 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6290 u16 offset = params.counter_offsets_presp[i];
6291
6292 if (offset >= params.beacon_csa.probe_resp_len)
6293 return -EINVAL;
6294
6295 if (params.beacon_csa.probe_resp[offset] !=
6296 params.count)
6297 return -EINVAL;
6298 }
6299 }
6300
6301 skip_beacons:
6302 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6303 if (err)
6304 return err;
6305
6306 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6307 wdev->iftype))
6308 return -EINVAL;
6309
6310 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6311 &params.chandef,
6312 wdev->iftype);
6313 if (err < 0)
6314 return err;
6315
6316 if (err > 0)
6317 params.radar_required = true;
6318
6319 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6320 params.block_tx = true;
6321
6322 wdev_lock(wdev);
6323 err = rdev_channel_switch(rdev, dev, &params);
6324 wdev_unlock(wdev);
6325
6326 return err;
6327 }
6328
6329 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6330 u32 seq, int flags,
6331 struct cfg80211_registered_device *rdev,
6332 struct wireless_dev *wdev,
6333 struct cfg80211_internal_bss *intbss)
6334 {
6335 struct cfg80211_bss *res = &intbss->pub;
6336 const struct cfg80211_bss_ies *ies;
6337 void *hdr;
6338 struct nlattr *bss;
6339
6340 ASSERT_WDEV_LOCK(wdev);
6341
6342 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6343 NL80211_CMD_NEW_SCAN_RESULTS);
6344 if (!hdr)
6345 return -1;
6346
6347 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6348
6349 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6350 goto nla_put_failure;
6351 if (wdev->netdev &&
6352 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6353 goto nla_put_failure;
6354 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6355 goto nla_put_failure;
6356
6357 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6358 if (!bss)
6359 goto nla_put_failure;
6360 if ((!is_zero_ether_addr(res->bssid) &&
6361 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6362 goto nla_put_failure;
6363
6364 rcu_read_lock();
6365 /* indicate whether we have probe response data or not */
6366 if (rcu_access_pointer(res->proberesp_ies) &&
6367 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6368 goto fail_unlock_rcu;
6369
6370 /* this pointer prefers to be pointed to probe response data
6371 * but is always valid
6372 */
6373 ies = rcu_dereference(res->ies);
6374 if (ies) {
6375 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6376 goto fail_unlock_rcu;
6377 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6378 ies->len, ies->data))
6379 goto fail_unlock_rcu;
6380 }
6381
6382 /* and this pointer is always (unless driver didn't know) beacon data */
6383 ies = rcu_dereference(res->beacon_ies);
6384 if (ies && ies->from_beacon) {
6385 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6386 goto fail_unlock_rcu;
6387 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6388 ies->len, ies->data))
6389 goto fail_unlock_rcu;
6390 }
6391 rcu_read_unlock();
6392
6393 if (res->beacon_interval &&
6394 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6395 goto nla_put_failure;
6396 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6397 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6398 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6399 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6400 jiffies_to_msecs(jiffies - intbss->ts)))
6401 goto nla_put_failure;
6402
6403 switch (rdev->wiphy.signal_type) {
6404 case CFG80211_SIGNAL_TYPE_MBM:
6405 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6406 goto nla_put_failure;
6407 break;
6408 case CFG80211_SIGNAL_TYPE_UNSPEC:
6409 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6410 goto nla_put_failure;
6411 break;
6412 default:
6413 break;
6414 }
6415
6416 switch (wdev->iftype) {
6417 case NL80211_IFTYPE_P2P_CLIENT:
6418 case NL80211_IFTYPE_STATION:
6419 if (intbss == wdev->current_bss &&
6420 nla_put_u32(msg, NL80211_BSS_STATUS,
6421 NL80211_BSS_STATUS_ASSOCIATED))
6422 goto nla_put_failure;
6423 break;
6424 case NL80211_IFTYPE_ADHOC:
6425 if (intbss == wdev->current_bss &&
6426 nla_put_u32(msg, NL80211_BSS_STATUS,
6427 NL80211_BSS_STATUS_IBSS_JOINED))
6428 goto nla_put_failure;
6429 break;
6430 default:
6431 break;
6432 }
6433
6434 nla_nest_end(msg, bss);
6435
6436 return genlmsg_end(msg, hdr);
6437
6438 fail_unlock_rcu:
6439 rcu_read_unlock();
6440 nla_put_failure:
6441 genlmsg_cancel(msg, hdr);
6442 return -EMSGSIZE;
6443 }
6444
6445 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6446 {
6447 struct cfg80211_registered_device *rdev;
6448 struct cfg80211_internal_bss *scan;
6449 struct wireless_dev *wdev;
6450 int start = cb->args[2], idx = 0;
6451 int err;
6452
6453 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6454 if (err)
6455 return err;
6456
6457 wdev_lock(wdev);
6458 spin_lock_bh(&rdev->bss_lock);
6459 cfg80211_bss_expire(rdev);
6460
6461 cb->seq = rdev->bss_generation;
6462
6463 list_for_each_entry(scan, &rdev->bss_list, list) {
6464 if (++idx <= start)
6465 continue;
6466 if (nl80211_send_bss(skb, cb,
6467 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6468 rdev, wdev, scan) < 0) {
6469 idx--;
6470 break;
6471 }
6472 }
6473
6474 spin_unlock_bh(&rdev->bss_lock);
6475 wdev_unlock(wdev);
6476
6477 cb->args[2] = idx;
6478 nl80211_finish_wdev_dump(rdev);
6479
6480 return skb->len;
6481 }
6482
6483 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6484 int flags, struct net_device *dev,
6485 struct survey_info *survey)
6486 {
6487 void *hdr;
6488 struct nlattr *infoattr;
6489
6490 hdr = nl80211hdr_put(msg, portid, seq, flags,
6491 NL80211_CMD_NEW_SURVEY_RESULTS);
6492 if (!hdr)
6493 return -ENOMEM;
6494
6495 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6496 goto nla_put_failure;
6497
6498 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6499 if (!infoattr)
6500 goto nla_put_failure;
6501
6502 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6503 survey->channel->center_freq))
6504 goto nla_put_failure;
6505
6506 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6507 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6508 goto nla_put_failure;
6509 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6510 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6511 goto nla_put_failure;
6512 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6513 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6514 survey->channel_time))
6515 goto nla_put_failure;
6516 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6517 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6518 survey->channel_time_busy))
6519 goto nla_put_failure;
6520 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6521 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6522 survey->channel_time_ext_busy))
6523 goto nla_put_failure;
6524 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6525 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6526 survey->channel_time_rx))
6527 goto nla_put_failure;
6528 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6529 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6530 survey->channel_time_tx))
6531 goto nla_put_failure;
6532
6533 nla_nest_end(msg, infoattr);
6534
6535 return genlmsg_end(msg, hdr);
6536
6537 nla_put_failure:
6538 genlmsg_cancel(msg, hdr);
6539 return -EMSGSIZE;
6540 }
6541
6542 static int nl80211_dump_survey(struct sk_buff *skb,
6543 struct netlink_callback *cb)
6544 {
6545 struct survey_info survey;
6546 struct cfg80211_registered_device *rdev;
6547 struct wireless_dev *wdev;
6548 int survey_idx = cb->args[2];
6549 int res;
6550
6551 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6552 if (res)
6553 return res;
6554
6555 if (!wdev->netdev) {
6556 res = -EINVAL;
6557 goto out_err;
6558 }
6559
6560 if (!rdev->ops->dump_survey) {
6561 res = -EOPNOTSUPP;
6562 goto out_err;
6563 }
6564
6565 while (1) {
6566 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6567 if (res == -ENOENT)
6568 break;
6569 if (res)
6570 goto out_err;
6571
6572 /* Survey without a channel doesn't make sense */
6573 if (!survey.channel) {
6574 res = -EINVAL;
6575 goto out;
6576 }
6577
6578 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6579 survey_idx++;
6580 continue;
6581 }
6582
6583 if (nl80211_send_survey(skb,
6584 NETLINK_CB(cb->skb).portid,
6585 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6586 wdev->netdev, &survey) < 0)
6587 goto out;
6588 survey_idx++;
6589 }
6590
6591 out:
6592 cb->args[2] = survey_idx;
6593 res = skb->len;
6594 out_err:
6595 nl80211_finish_wdev_dump(rdev);
6596 return res;
6597 }
6598
6599 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6600 {
6601 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6602 NL80211_WPA_VERSION_2));
6603 }
6604
6605 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6606 {
6607 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6608 struct net_device *dev = info->user_ptr[1];
6609 struct ieee80211_channel *chan;
6610 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6611 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6612 enum nl80211_auth_type auth_type;
6613 struct key_parse key;
6614 bool local_state_change;
6615
6616 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6617 return -EINVAL;
6618
6619 if (!info->attrs[NL80211_ATTR_MAC])
6620 return -EINVAL;
6621
6622 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6623 return -EINVAL;
6624
6625 if (!info->attrs[NL80211_ATTR_SSID])
6626 return -EINVAL;
6627
6628 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6629 return -EINVAL;
6630
6631 err = nl80211_parse_key(info, &key);
6632 if (err)
6633 return err;
6634
6635 if (key.idx >= 0) {
6636 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6637 return -EINVAL;
6638 if (!key.p.key || !key.p.key_len)
6639 return -EINVAL;
6640 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6641 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6642 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6643 key.p.key_len != WLAN_KEY_LEN_WEP104))
6644 return -EINVAL;
6645 if (key.idx > 4)
6646 return -EINVAL;
6647 } else {
6648 key.p.key_len = 0;
6649 key.p.key = NULL;
6650 }
6651
6652 if (key.idx >= 0) {
6653 int i;
6654 bool ok = false;
6655 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6656 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6657 ok = true;
6658 break;
6659 }
6660 }
6661 if (!ok)
6662 return -EINVAL;
6663 }
6664
6665 if (!rdev->ops->auth)
6666 return -EOPNOTSUPP;
6667
6668 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6669 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6670 return -EOPNOTSUPP;
6671
6672 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6673 chan = nl80211_get_valid_chan(&rdev->wiphy,
6674 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6675 if (!chan)
6676 return -EINVAL;
6677
6678 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6679 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6680
6681 if (info->attrs[NL80211_ATTR_IE]) {
6682 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6683 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6684 }
6685
6686 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6687 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6688 return -EINVAL;
6689
6690 if (auth_type == NL80211_AUTHTYPE_SAE &&
6691 !info->attrs[NL80211_ATTR_SAE_DATA])
6692 return -EINVAL;
6693
6694 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6695 if (auth_type != NL80211_AUTHTYPE_SAE)
6696 return -EINVAL;
6697 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6698 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6699 /* need to include at least Auth Transaction and Status Code */
6700 if (sae_data_len < 4)
6701 return -EINVAL;
6702 }
6703
6704 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6705
6706 /*
6707 * Since we no longer track auth state, ignore
6708 * requests to only change local state.
6709 */
6710 if (local_state_change)
6711 return 0;
6712
6713 wdev_lock(dev->ieee80211_ptr);
6714 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6715 ssid, ssid_len, ie, ie_len,
6716 key.p.key, key.p.key_len, key.idx,
6717 sae_data, sae_data_len);
6718 wdev_unlock(dev->ieee80211_ptr);
6719 return err;
6720 }
6721
6722 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6723 struct genl_info *info,
6724 struct cfg80211_crypto_settings *settings,
6725 int cipher_limit)
6726 {
6727 memset(settings, 0, sizeof(*settings));
6728
6729 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6730
6731 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6732 u16 proto;
6733 proto = nla_get_u16(
6734 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6735 settings->control_port_ethertype = cpu_to_be16(proto);
6736 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6737 proto != ETH_P_PAE)
6738 return -EINVAL;
6739 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6740 settings->control_port_no_encrypt = true;
6741 } else
6742 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6743
6744 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6745 void *data;
6746 int len, i;
6747
6748 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6749 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6750 settings->n_ciphers_pairwise = len / sizeof(u32);
6751
6752 if (len % sizeof(u32))
6753 return -EINVAL;
6754
6755 if (settings->n_ciphers_pairwise > cipher_limit)
6756 return -EINVAL;
6757
6758 memcpy(settings->ciphers_pairwise, data, len);
6759
6760 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6761 if (!cfg80211_supported_cipher_suite(
6762 &rdev->wiphy,
6763 settings->ciphers_pairwise[i]))
6764 return -EINVAL;
6765 }
6766
6767 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6768 settings->cipher_group =
6769 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6770 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6771 settings->cipher_group))
6772 return -EINVAL;
6773 }
6774
6775 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6776 settings->wpa_versions =
6777 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6778 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6779 return -EINVAL;
6780 }
6781
6782 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6783 void *data;
6784 int len;
6785
6786 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6787 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6788 settings->n_akm_suites = len / sizeof(u32);
6789
6790 if (len % sizeof(u32))
6791 return -EINVAL;
6792
6793 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6794 return -EINVAL;
6795
6796 memcpy(settings->akm_suites, data, len);
6797 }
6798
6799 return 0;
6800 }
6801
6802 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6803 {
6804 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6805 struct net_device *dev = info->user_ptr[1];
6806 struct ieee80211_channel *chan;
6807 struct cfg80211_assoc_request req = {};
6808 const u8 *bssid, *ssid;
6809 int err, ssid_len = 0;
6810
6811 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6812 return -EINVAL;
6813
6814 if (!info->attrs[NL80211_ATTR_MAC] ||
6815 !info->attrs[NL80211_ATTR_SSID] ||
6816 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6817 return -EINVAL;
6818
6819 if (!rdev->ops->assoc)
6820 return -EOPNOTSUPP;
6821
6822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6823 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6824 return -EOPNOTSUPP;
6825
6826 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6827
6828 chan = nl80211_get_valid_chan(&rdev->wiphy,
6829 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6830 if (!chan)
6831 return -EINVAL;
6832
6833 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6834 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6835
6836 if (info->attrs[NL80211_ATTR_IE]) {
6837 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6838 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6839 }
6840
6841 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6842 enum nl80211_mfp mfp =
6843 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6844 if (mfp == NL80211_MFP_REQUIRED)
6845 req.use_mfp = true;
6846 else if (mfp != NL80211_MFP_NO)
6847 return -EINVAL;
6848 }
6849
6850 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6851 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6852
6853 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6854 req.flags |= ASSOC_REQ_DISABLE_HT;
6855
6856 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6857 memcpy(&req.ht_capa_mask,
6858 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6859 sizeof(req.ht_capa_mask));
6860
6861 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6862 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6863 return -EINVAL;
6864 memcpy(&req.ht_capa,
6865 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6866 sizeof(req.ht_capa));
6867 }
6868
6869 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6870 req.flags |= ASSOC_REQ_DISABLE_VHT;
6871
6872 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6873 memcpy(&req.vht_capa_mask,
6874 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6875 sizeof(req.vht_capa_mask));
6876
6877 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6878 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6879 return -EINVAL;
6880 memcpy(&req.vht_capa,
6881 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6882 sizeof(req.vht_capa));
6883 }
6884
6885 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6886 if (!(rdev->wiphy.features &
6887 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6888 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6889 return -EINVAL;
6890 req.flags |= ASSOC_REQ_USE_RRM;
6891 }
6892
6893 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6894 if (!err) {
6895 wdev_lock(dev->ieee80211_ptr);
6896 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6897 ssid, ssid_len, &req);
6898 wdev_unlock(dev->ieee80211_ptr);
6899 }
6900
6901 return err;
6902 }
6903
6904 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6905 {
6906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6907 struct net_device *dev = info->user_ptr[1];
6908 const u8 *ie = NULL, *bssid;
6909 int ie_len = 0, err;
6910 u16 reason_code;
6911 bool local_state_change;
6912
6913 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6914 return -EINVAL;
6915
6916 if (!info->attrs[NL80211_ATTR_MAC])
6917 return -EINVAL;
6918
6919 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6920 return -EINVAL;
6921
6922 if (!rdev->ops->deauth)
6923 return -EOPNOTSUPP;
6924
6925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6926 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6927 return -EOPNOTSUPP;
6928
6929 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6930
6931 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6932 if (reason_code == 0) {
6933 /* Reason Code 0 is reserved */
6934 return -EINVAL;
6935 }
6936
6937 if (info->attrs[NL80211_ATTR_IE]) {
6938 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6939 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6940 }
6941
6942 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6943
6944 wdev_lock(dev->ieee80211_ptr);
6945 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6946 local_state_change);
6947 wdev_unlock(dev->ieee80211_ptr);
6948 return err;
6949 }
6950
6951 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6952 {
6953 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6954 struct net_device *dev = info->user_ptr[1];
6955 const u8 *ie = NULL, *bssid;
6956 int ie_len = 0, err;
6957 u16 reason_code;
6958 bool local_state_change;
6959
6960 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6961 return -EINVAL;
6962
6963 if (!info->attrs[NL80211_ATTR_MAC])
6964 return -EINVAL;
6965
6966 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6967 return -EINVAL;
6968
6969 if (!rdev->ops->disassoc)
6970 return -EOPNOTSUPP;
6971
6972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6973 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6974 return -EOPNOTSUPP;
6975
6976 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6977
6978 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6979 if (reason_code == 0) {
6980 /* Reason Code 0 is reserved */
6981 return -EINVAL;
6982 }
6983
6984 if (info->attrs[NL80211_ATTR_IE]) {
6985 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6986 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6987 }
6988
6989 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6990
6991 wdev_lock(dev->ieee80211_ptr);
6992 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6993 local_state_change);
6994 wdev_unlock(dev->ieee80211_ptr);
6995 return err;
6996 }
6997
6998 static bool
6999 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7000 int mcast_rate[IEEE80211_NUM_BANDS],
7001 int rateval)
7002 {
7003 struct wiphy *wiphy = &rdev->wiphy;
7004 bool found = false;
7005 int band, i;
7006
7007 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7008 struct ieee80211_supported_band *sband;
7009
7010 sband = wiphy->bands[band];
7011 if (!sband)
7012 continue;
7013
7014 for (i = 0; i < sband->n_bitrates; i++) {
7015 if (sband->bitrates[i].bitrate == rateval) {
7016 mcast_rate[band] = i + 1;
7017 found = true;
7018 break;
7019 }
7020 }
7021 }
7022
7023 return found;
7024 }
7025
7026 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7027 {
7028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7029 struct net_device *dev = info->user_ptr[1];
7030 struct cfg80211_ibss_params ibss;
7031 struct wiphy *wiphy;
7032 struct cfg80211_cached_keys *connkeys = NULL;
7033 int err;
7034
7035 memset(&ibss, 0, sizeof(ibss));
7036
7037 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7038 return -EINVAL;
7039
7040 if (!info->attrs[NL80211_ATTR_SSID] ||
7041 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7042 return -EINVAL;
7043
7044 ibss.beacon_interval = 100;
7045
7046 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7047 ibss.beacon_interval =
7048 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7049 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7050 return -EINVAL;
7051 }
7052
7053 if (!rdev->ops->join_ibss)
7054 return -EOPNOTSUPP;
7055
7056 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7057 return -EOPNOTSUPP;
7058
7059 wiphy = &rdev->wiphy;
7060
7061 if (info->attrs[NL80211_ATTR_MAC]) {
7062 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7063
7064 if (!is_valid_ether_addr(ibss.bssid))
7065 return -EINVAL;
7066 }
7067 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7068 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7069
7070 if (info->attrs[NL80211_ATTR_IE]) {
7071 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7072 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7073 }
7074
7075 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7076 if (err)
7077 return err;
7078
7079 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7080 NL80211_IFTYPE_ADHOC))
7081 return -EINVAL;
7082
7083 switch (ibss.chandef.width) {
7084 case NL80211_CHAN_WIDTH_5:
7085 case NL80211_CHAN_WIDTH_10:
7086 case NL80211_CHAN_WIDTH_20_NOHT:
7087 break;
7088 case NL80211_CHAN_WIDTH_20:
7089 case NL80211_CHAN_WIDTH_40:
7090 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7091 break;
7092 default:
7093 return -EINVAL;
7094 }
7095
7096 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7097 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7098
7099 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7100 u8 *rates =
7101 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7102 int n_rates =
7103 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7104 struct ieee80211_supported_band *sband =
7105 wiphy->bands[ibss.chandef.chan->band];
7106
7107 err = ieee80211_get_ratemask(sband, rates, n_rates,
7108 &ibss.basic_rates);
7109 if (err)
7110 return err;
7111 }
7112
7113 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7114 memcpy(&ibss.ht_capa_mask,
7115 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7116 sizeof(ibss.ht_capa_mask));
7117
7118 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7119 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7120 return -EINVAL;
7121 memcpy(&ibss.ht_capa,
7122 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7123 sizeof(ibss.ht_capa));
7124 }
7125
7126 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7127 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7128 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7129 return -EINVAL;
7130
7131 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7132 bool no_ht = false;
7133
7134 connkeys = nl80211_parse_connkeys(rdev,
7135 info->attrs[NL80211_ATTR_KEYS],
7136 &no_ht);
7137 if (IS_ERR(connkeys))
7138 return PTR_ERR(connkeys);
7139
7140 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7141 no_ht) {
7142 kfree(connkeys);
7143 return -EINVAL;
7144 }
7145 }
7146
7147 ibss.control_port =
7148 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7149
7150 ibss.userspace_handles_dfs =
7151 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7152
7153 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7154 if (err)
7155 kzfree(connkeys);
7156 return err;
7157 }
7158
7159 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7160 {
7161 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7162 struct net_device *dev = info->user_ptr[1];
7163
7164 if (!rdev->ops->leave_ibss)
7165 return -EOPNOTSUPP;
7166
7167 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7168 return -EOPNOTSUPP;
7169
7170 return cfg80211_leave_ibss(rdev, dev, false);
7171 }
7172
7173 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7174 {
7175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7176 struct net_device *dev = info->user_ptr[1];
7177 int mcast_rate[IEEE80211_NUM_BANDS];
7178 u32 nla_rate;
7179 int err;
7180
7181 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7182 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7183 return -EOPNOTSUPP;
7184
7185 if (!rdev->ops->set_mcast_rate)
7186 return -EOPNOTSUPP;
7187
7188 memset(mcast_rate, 0, sizeof(mcast_rate));
7189
7190 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7191 return -EINVAL;
7192
7193 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7194 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7195 return -EINVAL;
7196
7197 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7198
7199 return err;
7200 }
7201
7202 static struct sk_buff *
7203 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7204 int approxlen, u32 portid, u32 seq,
7205 enum nl80211_commands cmd,
7206 enum nl80211_attrs attr,
7207 const struct nl80211_vendor_cmd_info *info,
7208 gfp_t gfp)
7209 {
7210 struct sk_buff *skb;
7211 void *hdr;
7212 struct nlattr *data;
7213
7214 skb = nlmsg_new(approxlen + 100, gfp);
7215 if (!skb)
7216 return NULL;
7217
7218 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7219 if (!hdr) {
7220 kfree_skb(skb);
7221 return NULL;
7222 }
7223
7224 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7225 goto nla_put_failure;
7226
7227 if (info) {
7228 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7229 info->vendor_id))
7230 goto nla_put_failure;
7231 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7232 info->subcmd))
7233 goto nla_put_failure;
7234 }
7235
7236 data = nla_nest_start(skb, attr);
7237
7238 ((void **)skb->cb)[0] = rdev;
7239 ((void **)skb->cb)[1] = hdr;
7240 ((void **)skb->cb)[2] = data;
7241
7242 return skb;
7243
7244 nla_put_failure:
7245 kfree_skb(skb);
7246 return NULL;
7247 }
7248
7249 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7250 enum nl80211_commands cmd,
7251 enum nl80211_attrs attr,
7252 int vendor_event_idx,
7253 int approxlen, gfp_t gfp)
7254 {
7255 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7256 const struct nl80211_vendor_cmd_info *info;
7257
7258 switch (cmd) {
7259 case NL80211_CMD_TESTMODE:
7260 if (WARN_ON(vendor_event_idx != -1))
7261 return NULL;
7262 info = NULL;
7263 break;
7264 case NL80211_CMD_VENDOR:
7265 if (WARN_ON(vendor_event_idx < 0 ||
7266 vendor_event_idx >= wiphy->n_vendor_events))
7267 return NULL;
7268 info = &wiphy->vendor_events[vendor_event_idx];
7269 break;
7270 default:
7271 WARN_ON(1);
7272 return NULL;
7273 }
7274
7275 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7276 cmd, attr, info, gfp);
7277 }
7278 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7279
7280 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7281 {
7282 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7283 void *hdr = ((void **)skb->cb)[1];
7284 struct nlattr *data = ((void **)skb->cb)[2];
7285 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7286
7287 /* clear CB data for netlink core to own from now on */
7288 memset(skb->cb, 0, sizeof(skb->cb));
7289
7290 nla_nest_end(skb, data);
7291 genlmsg_end(skb, hdr);
7292
7293 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7294 mcgrp = NL80211_MCGRP_VENDOR;
7295
7296 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7297 mcgrp, gfp);
7298 }
7299 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7300
7301 #ifdef CONFIG_NL80211_TESTMODE
7302 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7303 {
7304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7305 struct wireless_dev *wdev =
7306 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7307 int err;
7308
7309 if (!rdev->ops->testmode_cmd)
7310 return -EOPNOTSUPP;
7311
7312 if (IS_ERR(wdev)) {
7313 err = PTR_ERR(wdev);
7314 if (err != -EINVAL)
7315 return err;
7316 wdev = NULL;
7317 } else if (wdev->wiphy != &rdev->wiphy) {
7318 return -EINVAL;
7319 }
7320
7321 if (!info->attrs[NL80211_ATTR_TESTDATA])
7322 return -EINVAL;
7323
7324 rdev->cur_cmd_info = info;
7325 err = rdev_testmode_cmd(rdev, wdev,
7326 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7327 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7328 rdev->cur_cmd_info = NULL;
7329
7330 return err;
7331 }
7332
7333 static int nl80211_testmode_dump(struct sk_buff *skb,
7334 struct netlink_callback *cb)
7335 {
7336 struct cfg80211_registered_device *rdev;
7337 int err;
7338 long phy_idx;
7339 void *data = NULL;
7340 int data_len = 0;
7341
7342 rtnl_lock();
7343
7344 if (cb->args[0]) {
7345 /*
7346 * 0 is a valid index, but not valid for args[0],
7347 * so we need to offset by 1.
7348 */
7349 phy_idx = cb->args[0] - 1;
7350 } else {
7351 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7352 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7353 nl80211_policy);
7354 if (err)
7355 goto out_err;
7356
7357 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7358 nl80211_fam.attrbuf);
7359 if (IS_ERR(rdev)) {
7360 err = PTR_ERR(rdev);
7361 goto out_err;
7362 }
7363 phy_idx = rdev->wiphy_idx;
7364 rdev = NULL;
7365
7366 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7367 cb->args[1] =
7368 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7369 }
7370
7371 if (cb->args[1]) {
7372 data = nla_data((void *)cb->args[1]);
7373 data_len = nla_len((void *)cb->args[1]);
7374 }
7375
7376 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7377 if (!rdev) {
7378 err = -ENOENT;
7379 goto out_err;
7380 }
7381
7382 if (!rdev->ops->testmode_dump) {
7383 err = -EOPNOTSUPP;
7384 goto out_err;
7385 }
7386
7387 while (1) {
7388 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7389 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7390 NL80211_CMD_TESTMODE);
7391 struct nlattr *tmdata;
7392
7393 if (!hdr)
7394 break;
7395
7396 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7397 genlmsg_cancel(skb, hdr);
7398 break;
7399 }
7400
7401 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7402 if (!tmdata) {
7403 genlmsg_cancel(skb, hdr);
7404 break;
7405 }
7406 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7407 nla_nest_end(skb, tmdata);
7408
7409 if (err == -ENOBUFS || err == -ENOENT) {
7410 genlmsg_cancel(skb, hdr);
7411 break;
7412 } else if (err) {
7413 genlmsg_cancel(skb, hdr);
7414 goto out_err;
7415 }
7416
7417 genlmsg_end(skb, hdr);
7418 }
7419
7420 err = skb->len;
7421 /* see above */
7422 cb->args[0] = phy_idx + 1;
7423 out_err:
7424 rtnl_unlock();
7425 return err;
7426 }
7427 #endif
7428
7429 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7430 {
7431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7432 struct net_device *dev = info->user_ptr[1];
7433 struct cfg80211_connect_params connect;
7434 struct wiphy *wiphy;
7435 struct cfg80211_cached_keys *connkeys = NULL;
7436 int err;
7437
7438 memset(&connect, 0, sizeof(connect));
7439
7440 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7441 return -EINVAL;
7442
7443 if (!info->attrs[NL80211_ATTR_SSID] ||
7444 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7445 return -EINVAL;
7446
7447 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7448 connect.auth_type =
7449 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7450 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7451 NL80211_CMD_CONNECT))
7452 return -EINVAL;
7453 } else
7454 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7455
7456 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7457
7458 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7459 NL80211_MAX_NR_CIPHER_SUITES);
7460 if (err)
7461 return err;
7462
7463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7465 return -EOPNOTSUPP;
7466
7467 wiphy = &rdev->wiphy;
7468
7469 connect.bg_scan_period = -1;
7470 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7471 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7472 connect.bg_scan_period =
7473 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7474 }
7475
7476 if (info->attrs[NL80211_ATTR_MAC])
7477 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7478 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7479 connect.bssid_hint =
7480 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7481 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7482 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7483
7484 if (info->attrs[NL80211_ATTR_IE]) {
7485 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7486 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7487 }
7488
7489 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7490 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7491 if (connect.mfp != NL80211_MFP_REQUIRED &&
7492 connect.mfp != NL80211_MFP_NO)
7493 return -EINVAL;
7494 } else {
7495 connect.mfp = NL80211_MFP_NO;
7496 }
7497
7498 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7499 connect.channel = nl80211_get_valid_chan(
7500 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7501 if (!connect.channel)
7502 return -EINVAL;
7503 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7504 connect.channel_hint = nl80211_get_valid_chan(
7505 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7506 if (!connect.channel_hint)
7507 return -EINVAL;
7508 }
7509
7510 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7511 connkeys = nl80211_parse_connkeys(rdev,
7512 info->attrs[NL80211_ATTR_KEYS], NULL);
7513 if (IS_ERR(connkeys))
7514 return PTR_ERR(connkeys);
7515 }
7516
7517 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7518 connect.flags |= ASSOC_REQ_DISABLE_HT;
7519
7520 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7521 memcpy(&connect.ht_capa_mask,
7522 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7523 sizeof(connect.ht_capa_mask));
7524
7525 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7526 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7527 kzfree(connkeys);
7528 return -EINVAL;
7529 }
7530 memcpy(&connect.ht_capa,
7531 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7532 sizeof(connect.ht_capa));
7533 }
7534
7535 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7536 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7537
7538 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7539 memcpy(&connect.vht_capa_mask,
7540 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7541 sizeof(connect.vht_capa_mask));
7542
7543 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7544 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7545 kzfree(connkeys);
7546 return -EINVAL;
7547 }
7548 memcpy(&connect.vht_capa,
7549 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7550 sizeof(connect.vht_capa));
7551 }
7552
7553 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7554 if (!(rdev->wiphy.features &
7555 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7556 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7557 return -EINVAL;
7558 connect.flags |= ASSOC_REQ_USE_RRM;
7559 }
7560
7561 wdev_lock(dev->ieee80211_ptr);
7562 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7563 wdev_unlock(dev->ieee80211_ptr);
7564 if (err)
7565 kzfree(connkeys);
7566 return err;
7567 }
7568
7569 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7570 {
7571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7572 struct net_device *dev = info->user_ptr[1];
7573 u16 reason;
7574 int ret;
7575
7576 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7577 reason = WLAN_REASON_DEAUTH_LEAVING;
7578 else
7579 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7580
7581 if (reason == 0)
7582 return -EINVAL;
7583
7584 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7585 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7586 return -EOPNOTSUPP;
7587
7588 wdev_lock(dev->ieee80211_ptr);
7589 ret = cfg80211_disconnect(rdev, dev, reason, true);
7590 wdev_unlock(dev->ieee80211_ptr);
7591 return ret;
7592 }
7593
7594 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7595 {
7596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7597 struct net *net;
7598 int err;
7599 u32 pid;
7600
7601 if (!info->attrs[NL80211_ATTR_PID])
7602 return -EINVAL;
7603
7604 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7605
7606 net = get_net_ns_by_pid(pid);
7607 if (IS_ERR(net))
7608 return PTR_ERR(net);
7609
7610 err = 0;
7611
7612 /* check if anything to do */
7613 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7614 err = cfg80211_switch_netns(rdev, net);
7615
7616 put_net(net);
7617 return err;
7618 }
7619
7620 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7621 {
7622 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7623 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7624 struct cfg80211_pmksa *pmksa) = NULL;
7625 struct net_device *dev = info->user_ptr[1];
7626 struct cfg80211_pmksa pmksa;
7627
7628 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7629
7630 if (!info->attrs[NL80211_ATTR_MAC])
7631 return -EINVAL;
7632
7633 if (!info->attrs[NL80211_ATTR_PMKID])
7634 return -EINVAL;
7635
7636 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7637 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7638
7639 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7640 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7641 return -EOPNOTSUPP;
7642
7643 switch (info->genlhdr->cmd) {
7644 case NL80211_CMD_SET_PMKSA:
7645 rdev_ops = rdev->ops->set_pmksa;
7646 break;
7647 case NL80211_CMD_DEL_PMKSA:
7648 rdev_ops = rdev->ops->del_pmksa;
7649 break;
7650 default:
7651 WARN_ON(1);
7652 break;
7653 }
7654
7655 if (!rdev_ops)
7656 return -EOPNOTSUPP;
7657
7658 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7659 }
7660
7661 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7662 {
7663 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7664 struct net_device *dev = info->user_ptr[1];
7665
7666 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7667 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7668 return -EOPNOTSUPP;
7669
7670 if (!rdev->ops->flush_pmksa)
7671 return -EOPNOTSUPP;
7672
7673 return rdev_flush_pmksa(rdev, dev);
7674 }
7675
7676 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7677 {
7678 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7679 struct net_device *dev = info->user_ptr[1];
7680 u8 action_code, dialog_token;
7681 u32 peer_capability = 0;
7682 u16 status_code;
7683 u8 *peer;
7684 bool initiator;
7685
7686 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7687 !rdev->ops->tdls_mgmt)
7688 return -EOPNOTSUPP;
7689
7690 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7691 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7692 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7693 !info->attrs[NL80211_ATTR_IE] ||
7694 !info->attrs[NL80211_ATTR_MAC])
7695 return -EINVAL;
7696
7697 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7698 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7699 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7700 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7701 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7702 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7703 peer_capability =
7704 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7705
7706 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7707 dialog_token, status_code, peer_capability,
7708 initiator,
7709 nla_data(info->attrs[NL80211_ATTR_IE]),
7710 nla_len(info->attrs[NL80211_ATTR_IE]));
7711 }
7712
7713 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7714 {
7715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7716 struct net_device *dev = info->user_ptr[1];
7717 enum nl80211_tdls_operation operation;
7718 u8 *peer;
7719
7720 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7721 !rdev->ops->tdls_oper)
7722 return -EOPNOTSUPP;
7723
7724 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7725 !info->attrs[NL80211_ATTR_MAC])
7726 return -EINVAL;
7727
7728 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7729 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7730
7731 return rdev_tdls_oper(rdev, dev, peer, operation);
7732 }
7733
7734 static int nl80211_remain_on_channel(struct sk_buff *skb,
7735 struct genl_info *info)
7736 {
7737 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7738 struct wireless_dev *wdev = info->user_ptr[1];
7739 struct cfg80211_chan_def chandef;
7740 struct sk_buff *msg;
7741 void *hdr;
7742 u64 cookie;
7743 u32 duration;
7744 int err;
7745
7746 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7747 !info->attrs[NL80211_ATTR_DURATION])
7748 return -EINVAL;
7749
7750 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7751
7752 if (!rdev->ops->remain_on_channel ||
7753 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7754 return -EOPNOTSUPP;
7755
7756 /*
7757 * We should be on that channel for at least a minimum amount of
7758 * time (10ms) but no longer than the driver supports.
7759 */
7760 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7761 duration > rdev->wiphy.max_remain_on_channel_duration)
7762 return -EINVAL;
7763
7764 err = nl80211_parse_chandef(rdev, info, &chandef);
7765 if (err)
7766 return err;
7767
7768 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7769 if (!msg)
7770 return -ENOMEM;
7771
7772 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7773 NL80211_CMD_REMAIN_ON_CHANNEL);
7774 if (!hdr) {
7775 err = -ENOBUFS;
7776 goto free_msg;
7777 }
7778
7779 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7780 duration, &cookie);
7781
7782 if (err)
7783 goto free_msg;
7784
7785 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7786 goto nla_put_failure;
7787
7788 genlmsg_end(msg, hdr);
7789
7790 return genlmsg_reply(msg, info);
7791
7792 nla_put_failure:
7793 err = -ENOBUFS;
7794 free_msg:
7795 nlmsg_free(msg);
7796 return err;
7797 }
7798
7799 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7800 struct genl_info *info)
7801 {
7802 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7803 struct wireless_dev *wdev = info->user_ptr[1];
7804 u64 cookie;
7805
7806 if (!info->attrs[NL80211_ATTR_COOKIE])
7807 return -EINVAL;
7808
7809 if (!rdev->ops->cancel_remain_on_channel)
7810 return -EOPNOTSUPP;
7811
7812 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7813
7814 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7815 }
7816
7817 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7818 u8 *rates, u8 rates_len)
7819 {
7820 u8 i;
7821 u32 mask = 0;
7822
7823 for (i = 0; i < rates_len; i++) {
7824 int rate = (rates[i] & 0x7f) * 5;
7825 int ridx;
7826 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7827 struct ieee80211_rate *srate =
7828 &sband->bitrates[ridx];
7829 if (rate == srate->bitrate) {
7830 mask |= 1 << ridx;
7831 break;
7832 }
7833 }
7834 if (ridx == sband->n_bitrates)
7835 return 0; /* rate not found */
7836 }
7837
7838 return mask;
7839 }
7840
7841 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7842 u8 *rates, u8 rates_len,
7843 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7844 {
7845 u8 i;
7846
7847 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7848
7849 for (i = 0; i < rates_len; i++) {
7850 int ridx, rbit;
7851
7852 ridx = rates[i] / 8;
7853 rbit = BIT(rates[i] % 8);
7854
7855 /* check validity */
7856 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7857 return false;
7858
7859 /* check availability */
7860 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7861 mcs[ridx] |= rbit;
7862 else
7863 return false;
7864 }
7865
7866 return true;
7867 }
7868
7869 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7870 {
7871 u16 mcs_mask = 0;
7872
7873 switch (vht_mcs_map) {
7874 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7875 break;
7876 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7877 mcs_mask = 0x00FF;
7878 break;
7879 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7880 mcs_mask = 0x01FF;
7881 break;
7882 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7883 mcs_mask = 0x03FF;
7884 break;
7885 default:
7886 break;
7887 }
7888
7889 return mcs_mask;
7890 }
7891
7892 static void vht_build_mcs_mask(u16 vht_mcs_map,
7893 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7894 {
7895 u8 nss;
7896
7897 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7898 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7899 vht_mcs_map >>= 2;
7900 }
7901 }
7902
7903 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7904 struct nl80211_txrate_vht *txrate,
7905 u16 mcs[NL80211_VHT_NSS_MAX])
7906 {
7907 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7908 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7909 u8 i;
7910
7911 if (!sband->vht_cap.vht_supported)
7912 return false;
7913
7914 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7915
7916 /* Build vht_mcs_mask from VHT capabilities */
7917 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7918
7919 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7920 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7921 mcs[i] = txrate->mcs[i];
7922 else
7923 return false;
7924 }
7925
7926 return true;
7927 }
7928
7929 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7930 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7931 .len = NL80211_MAX_SUPP_RATES },
7932 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7933 .len = NL80211_MAX_SUPP_HT_RATES },
7934 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7935 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7936 };
7937
7938 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7939 struct genl_info *info)
7940 {
7941 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7942 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7943 struct cfg80211_bitrate_mask mask;
7944 int rem, i;
7945 struct net_device *dev = info->user_ptr[1];
7946 struct nlattr *tx_rates;
7947 struct ieee80211_supported_band *sband;
7948 u16 vht_tx_mcs_map;
7949
7950 if (!rdev->ops->set_bitrate_mask)
7951 return -EOPNOTSUPP;
7952
7953 memset(&mask, 0, sizeof(mask));
7954 /* Default to all rates enabled */
7955 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7956 sband = rdev->wiphy.bands[i];
7957
7958 if (!sband)
7959 continue;
7960
7961 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7962 memcpy(mask.control[i].ht_mcs,
7963 sband->ht_cap.mcs.rx_mask,
7964 sizeof(mask.control[i].ht_mcs));
7965
7966 if (!sband->vht_cap.vht_supported)
7967 continue;
7968
7969 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7970 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7971 }
7972
7973 /* if no rates are given set it back to the defaults */
7974 if (!info->attrs[NL80211_ATTR_TX_RATES])
7975 goto out;
7976
7977 /*
7978 * The nested attribute uses enum nl80211_band as the index. This maps
7979 * directly to the enum ieee80211_band values used in cfg80211.
7980 */
7981 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7982 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7983 enum ieee80211_band band = nla_type(tx_rates);
7984 int err;
7985
7986 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7987 return -EINVAL;
7988 sband = rdev->wiphy.bands[band];
7989 if (sband == NULL)
7990 return -EINVAL;
7991 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7992 nla_len(tx_rates), nl80211_txattr_policy);
7993 if (err)
7994 return err;
7995 if (tb[NL80211_TXRATE_LEGACY]) {
7996 mask.control[band].legacy = rateset_to_mask(
7997 sband,
7998 nla_data(tb[NL80211_TXRATE_LEGACY]),
7999 nla_len(tb[NL80211_TXRATE_LEGACY]));
8000 if ((mask.control[band].legacy == 0) &&
8001 nla_len(tb[NL80211_TXRATE_LEGACY]))
8002 return -EINVAL;
8003 }
8004 if (tb[NL80211_TXRATE_HT]) {
8005 if (!ht_rateset_to_mask(
8006 sband,
8007 nla_data(tb[NL80211_TXRATE_HT]),
8008 nla_len(tb[NL80211_TXRATE_HT]),
8009 mask.control[band].ht_mcs))
8010 return -EINVAL;
8011 }
8012 if (tb[NL80211_TXRATE_VHT]) {
8013 if (!vht_set_mcs_mask(
8014 sband,
8015 nla_data(tb[NL80211_TXRATE_VHT]),
8016 mask.control[band].vht_mcs))
8017 return -EINVAL;
8018 }
8019 if (tb[NL80211_TXRATE_GI]) {
8020 mask.control[band].gi =
8021 nla_get_u8(tb[NL80211_TXRATE_GI]);
8022 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8023 return -EINVAL;
8024 }
8025
8026 if (mask.control[band].legacy == 0) {
8027 /* don't allow empty legacy rates if HT or VHT
8028 * are not even supported.
8029 */
8030 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8031 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8032 return -EINVAL;
8033
8034 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8035 if (mask.control[band].ht_mcs[i])
8036 goto out;
8037
8038 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8039 if (mask.control[band].vht_mcs[i])
8040 goto out;
8041
8042 /* legacy and mcs rates may not be both empty */
8043 return -EINVAL;
8044 }
8045 }
8046
8047 out:
8048 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8049 }
8050
8051 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8052 {
8053 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8054 struct wireless_dev *wdev = info->user_ptr[1];
8055 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8056
8057 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8058 return -EINVAL;
8059
8060 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8061 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8062
8063 switch (wdev->iftype) {
8064 case NL80211_IFTYPE_STATION:
8065 case NL80211_IFTYPE_ADHOC:
8066 case NL80211_IFTYPE_P2P_CLIENT:
8067 case NL80211_IFTYPE_AP:
8068 case NL80211_IFTYPE_AP_VLAN:
8069 case NL80211_IFTYPE_MESH_POINT:
8070 case NL80211_IFTYPE_P2P_GO:
8071 case NL80211_IFTYPE_P2P_DEVICE:
8072 break;
8073 default:
8074 return -EOPNOTSUPP;
8075 }
8076
8077 /* not much point in registering if we can't reply */
8078 if (!rdev->ops->mgmt_tx)
8079 return -EOPNOTSUPP;
8080
8081 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8082 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8083 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8084 }
8085
8086 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8087 {
8088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8089 struct wireless_dev *wdev = info->user_ptr[1];
8090 struct cfg80211_chan_def chandef;
8091 int err;
8092 void *hdr = NULL;
8093 u64 cookie;
8094 struct sk_buff *msg = NULL;
8095 struct cfg80211_mgmt_tx_params params = {
8096 .dont_wait_for_ack =
8097 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8098 };
8099
8100 if (!info->attrs[NL80211_ATTR_FRAME])
8101 return -EINVAL;
8102
8103 if (!rdev->ops->mgmt_tx)
8104 return -EOPNOTSUPP;
8105
8106 switch (wdev->iftype) {
8107 case NL80211_IFTYPE_P2P_DEVICE:
8108 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8109 return -EINVAL;
8110 case NL80211_IFTYPE_STATION:
8111 case NL80211_IFTYPE_ADHOC:
8112 case NL80211_IFTYPE_P2P_CLIENT:
8113 case NL80211_IFTYPE_AP:
8114 case NL80211_IFTYPE_AP_VLAN:
8115 case NL80211_IFTYPE_MESH_POINT:
8116 case NL80211_IFTYPE_P2P_GO:
8117 break;
8118 default:
8119 return -EOPNOTSUPP;
8120 }
8121
8122 if (info->attrs[NL80211_ATTR_DURATION]) {
8123 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8124 return -EINVAL;
8125 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8126
8127 /*
8128 * We should wait on the channel for at least a minimum amount
8129 * of time (10ms) but no longer than the driver supports.
8130 */
8131 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8132 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8133 return -EINVAL;
8134
8135 }
8136
8137 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8138
8139 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8140 return -EINVAL;
8141
8142 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8143
8144 /* get the channel if any has been specified, otherwise pass NULL to
8145 * the driver. The latter will use the current one
8146 */
8147 chandef.chan = NULL;
8148 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8149 err = nl80211_parse_chandef(rdev, info, &chandef);
8150 if (err)
8151 return err;
8152 }
8153
8154 if (!chandef.chan && params.offchan)
8155 return -EINVAL;
8156
8157 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8158 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8159
8160 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8161 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8162 int i;
8163
8164 if (len % sizeof(u16))
8165 return -EINVAL;
8166
8167 params.n_csa_offsets = len / sizeof(u16);
8168 params.csa_offsets =
8169 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8170
8171 /* check that all the offsets fit the frame */
8172 for (i = 0; i < params.n_csa_offsets; i++) {
8173 if (params.csa_offsets[i] >= params.len)
8174 return -EINVAL;
8175 }
8176 }
8177
8178 if (!params.dont_wait_for_ack) {
8179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8180 if (!msg)
8181 return -ENOMEM;
8182
8183 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8184 NL80211_CMD_FRAME);
8185 if (!hdr) {
8186 err = -ENOBUFS;
8187 goto free_msg;
8188 }
8189 }
8190
8191 params.chan = chandef.chan;
8192 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8193 if (err)
8194 goto free_msg;
8195
8196 if (msg) {
8197 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8198 goto nla_put_failure;
8199
8200 genlmsg_end(msg, hdr);
8201 return genlmsg_reply(msg, info);
8202 }
8203
8204 return 0;
8205
8206 nla_put_failure:
8207 err = -ENOBUFS;
8208 free_msg:
8209 nlmsg_free(msg);
8210 return err;
8211 }
8212
8213 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8214 {
8215 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8216 struct wireless_dev *wdev = info->user_ptr[1];
8217 u64 cookie;
8218
8219 if (!info->attrs[NL80211_ATTR_COOKIE])
8220 return -EINVAL;
8221
8222 if (!rdev->ops->mgmt_tx_cancel_wait)
8223 return -EOPNOTSUPP;
8224
8225 switch (wdev->iftype) {
8226 case NL80211_IFTYPE_STATION:
8227 case NL80211_IFTYPE_ADHOC:
8228 case NL80211_IFTYPE_P2P_CLIENT:
8229 case NL80211_IFTYPE_AP:
8230 case NL80211_IFTYPE_AP_VLAN:
8231 case NL80211_IFTYPE_P2P_GO:
8232 case NL80211_IFTYPE_P2P_DEVICE:
8233 break;
8234 default:
8235 return -EOPNOTSUPP;
8236 }
8237
8238 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8239
8240 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8241 }
8242
8243 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8244 {
8245 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8246 struct wireless_dev *wdev;
8247 struct net_device *dev = info->user_ptr[1];
8248 u8 ps_state;
8249 bool state;
8250 int err;
8251
8252 if (!info->attrs[NL80211_ATTR_PS_STATE])
8253 return -EINVAL;
8254
8255 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8256
8257 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8258 return -EINVAL;
8259
8260 wdev = dev->ieee80211_ptr;
8261
8262 if (!rdev->ops->set_power_mgmt)
8263 return -EOPNOTSUPP;
8264
8265 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8266
8267 if (state == wdev->ps)
8268 return 0;
8269
8270 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8271 if (!err)
8272 wdev->ps = state;
8273 return err;
8274 }
8275
8276 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8277 {
8278 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8279 enum nl80211_ps_state ps_state;
8280 struct wireless_dev *wdev;
8281 struct net_device *dev = info->user_ptr[1];
8282 struct sk_buff *msg;
8283 void *hdr;
8284 int err;
8285
8286 wdev = dev->ieee80211_ptr;
8287
8288 if (!rdev->ops->set_power_mgmt)
8289 return -EOPNOTSUPP;
8290
8291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8292 if (!msg)
8293 return -ENOMEM;
8294
8295 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8296 NL80211_CMD_GET_POWER_SAVE);
8297 if (!hdr) {
8298 err = -ENOBUFS;
8299 goto free_msg;
8300 }
8301
8302 if (wdev->ps)
8303 ps_state = NL80211_PS_ENABLED;
8304 else
8305 ps_state = NL80211_PS_DISABLED;
8306
8307 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8308 goto nla_put_failure;
8309
8310 genlmsg_end(msg, hdr);
8311 return genlmsg_reply(msg, info);
8312
8313 nla_put_failure:
8314 err = -ENOBUFS;
8315 free_msg:
8316 nlmsg_free(msg);
8317 return err;
8318 }
8319
8320 static const struct nla_policy
8321 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8322 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8323 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8324 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8325 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8326 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8327 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8328 };
8329
8330 static int nl80211_set_cqm_txe(struct genl_info *info,
8331 u32 rate, u32 pkts, u32 intvl)
8332 {
8333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8334 struct net_device *dev = info->user_ptr[1];
8335 struct wireless_dev *wdev = dev->ieee80211_ptr;
8336
8337 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8338 return -EINVAL;
8339
8340 if (!rdev->ops->set_cqm_txe_config)
8341 return -EOPNOTSUPP;
8342
8343 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8344 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8345 return -EOPNOTSUPP;
8346
8347 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8348 }
8349
8350 static int nl80211_set_cqm_rssi(struct genl_info *info,
8351 s32 threshold, u32 hysteresis)
8352 {
8353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8354 struct net_device *dev = info->user_ptr[1];
8355 struct wireless_dev *wdev = dev->ieee80211_ptr;
8356
8357 if (threshold > 0)
8358 return -EINVAL;
8359
8360 /* disabling - hysteresis should also be zero then */
8361 if (threshold == 0)
8362 hysteresis = 0;
8363
8364 if (!rdev->ops->set_cqm_rssi_config)
8365 return -EOPNOTSUPP;
8366
8367 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8368 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8369 return -EOPNOTSUPP;
8370
8371 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8372 }
8373
8374 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8375 {
8376 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8377 struct nlattr *cqm;
8378 int err;
8379
8380 cqm = info->attrs[NL80211_ATTR_CQM];
8381 if (!cqm)
8382 return -EINVAL;
8383
8384 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8385 nl80211_attr_cqm_policy);
8386 if (err)
8387 return err;
8388
8389 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8390 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8391 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8392 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8393
8394 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8395 }
8396
8397 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8398 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8399 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8400 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8401 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8402 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8403
8404 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8405 }
8406
8407 return -EINVAL;
8408 }
8409
8410 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8411 {
8412 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8413 struct net_device *dev = info->user_ptr[1];
8414 struct ocb_setup setup = {};
8415 int err;
8416
8417 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8418 if (err)
8419 return err;
8420
8421 return cfg80211_join_ocb(rdev, dev, &setup);
8422 }
8423
8424 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8425 {
8426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8427 struct net_device *dev = info->user_ptr[1];
8428
8429 return cfg80211_leave_ocb(rdev, dev);
8430 }
8431
8432 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8433 {
8434 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8435 struct net_device *dev = info->user_ptr[1];
8436 struct mesh_config cfg;
8437 struct mesh_setup setup;
8438 int err;
8439
8440 /* start with default */
8441 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8442 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8443
8444 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8445 /* and parse parameters if given */
8446 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8447 if (err)
8448 return err;
8449 }
8450
8451 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8452 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8453 return -EINVAL;
8454
8455 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8456 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8457
8458 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8459 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8460 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8461 return -EINVAL;
8462
8463 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8464 setup.beacon_interval =
8465 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8466 if (setup.beacon_interval < 10 ||
8467 setup.beacon_interval > 10000)
8468 return -EINVAL;
8469 }
8470
8471 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8472 setup.dtim_period =
8473 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8474 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8475 return -EINVAL;
8476 }
8477
8478 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8479 /* parse additional setup parameters if given */
8480 err = nl80211_parse_mesh_setup(info, &setup);
8481 if (err)
8482 return err;
8483 }
8484
8485 if (setup.user_mpm)
8486 cfg.auto_open_plinks = false;
8487
8488 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8489 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8490 if (err)
8491 return err;
8492 } else {
8493 /* cfg80211_join_mesh() will sort it out */
8494 setup.chandef.chan = NULL;
8495 }
8496
8497 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8498 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8499 int n_rates =
8500 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8501 struct ieee80211_supported_band *sband;
8502
8503 if (!setup.chandef.chan)
8504 return -EINVAL;
8505
8506 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8507
8508 err = ieee80211_get_ratemask(sband, rates, n_rates,
8509 &setup.basic_rates);
8510 if (err)
8511 return err;
8512 }
8513
8514 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8515 }
8516
8517 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8518 {
8519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8520 struct net_device *dev = info->user_ptr[1];
8521
8522 return cfg80211_leave_mesh(rdev, dev);
8523 }
8524
8525 #ifdef CONFIG_PM
8526 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8527 struct cfg80211_registered_device *rdev)
8528 {
8529 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8530 struct nlattr *nl_pats, *nl_pat;
8531 int i, pat_len;
8532
8533 if (!wowlan->n_patterns)
8534 return 0;
8535
8536 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8537 if (!nl_pats)
8538 return -ENOBUFS;
8539
8540 for (i = 0; i < wowlan->n_patterns; i++) {
8541 nl_pat = nla_nest_start(msg, i + 1);
8542 if (!nl_pat)
8543 return -ENOBUFS;
8544 pat_len = wowlan->patterns[i].pattern_len;
8545 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8546 wowlan->patterns[i].mask) ||
8547 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8548 wowlan->patterns[i].pattern) ||
8549 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8550 wowlan->patterns[i].pkt_offset))
8551 return -ENOBUFS;
8552 nla_nest_end(msg, nl_pat);
8553 }
8554 nla_nest_end(msg, nl_pats);
8555
8556 return 0;
8557 }
8558
8559 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8560 struct cfg80211_wowlan_tcp *tcp)
8561 {
8562 struct nlattr *nl_tcp;
8563
8564 if (!tcp)
8565 return 0;
8566
8567 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8568 if (!nl_tcp)
8569 return -ENOBUFS;
8570
8571 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8572 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8573 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8574 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8575 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8576 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8577 tcp->payload_len, tcp->payload) ||
8578 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8579 tcp->data_interval) ||
8580 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8581 tcp->wake_len, tcp->wake_data) ||
8582 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8583 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8584 return -ENOBUFS;
8585
8586 if (tcp->payload_seq.len &&
8587 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8588 sizeof(tcp->payload_seq), &tcp->payload_seq))
8589 return -ENOBUFS;
8590
8591 if (tcp->payload_tok.len &&
8592 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8593 sizeof(tcp->payload_tok) + tcp->tokens_size,
8594 &tcp->payload_tok))
8595 return -ENOBUFS;
8596
8597 nla_nest_end(msg, nl_tcp);
8598
8599 return 0;
8600 }
8601
8602 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8603 {
8604 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8605 struct sk_buff *msg;
8606 void *hdr;
8607 u32 size = NLMSG_DEFAULT_SIZE;
8608
8609 if (!rdev->wiphy.wowlan)
8610 return -EOPNOTSUPP;
8611
8612 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8613 /* adjust size to have room for all the data */
8614 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8615 rdev->wiphy.wowlan_config->tcp->payload_len +
8616 rdev->wiphy.wowlan_config->tcp->wake_len +
8617 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8618 }
8619
8620 msg = nlmsg_new(size, GFP_KERNEL);
8621 if (!msg)
8622 return -ENOMEM;
8623
8624 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8625 NL80211_CMD_GET_WOWLAN);
8626 if (!hdr)
8627 goto nla_put_failure;
8628
8629 if (rdev->wiphy.wowlan_config) {
8630 struct nlattr *nl_wowlan;
8631
8632 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8633 if (!nl_wowlan)
8634 goto nla_put_failure;
8635
8636 if ((rdev->wiphy.wowlan_config->any &&
8637 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8638 (rdev->wiphy.wowlan_config->disconnect &&
8639 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8640 (rdev->wiphy.wowlan_config->magic_pkt &&
8641 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8642 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8643 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8644 (rdev->wiphy.wowlan_config->eap_identity_req &&
8645 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8646 (rdev->wiphy.wowlan_config->four_way_handshake &&
8647 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8648 (rdev->wiphy.wowlan_config->rfkill_release &&
8649 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8650 goto nla_put_failure;
8651
8652 if (nl80211_send_wowlan_patterns(msg, rdev))
8653 goto nla_put_failure;
8654
8655 if (nl80211_send_wowlan_tcp(msg,
8656 rdev->wiphy.wowlan_config->tcp))
8657 goto nla_put_failure;
8658
8659 nla_nest_end(msg, nl_wowlan);
8660 }
8661
8662 genlmsg_end(msg, hdr);
8663 return genlmsg_reply(msg, info);
8664
8665 nla_put_failure:
8666 nlmsg_free(msg);
8667 return -ENOBUFS;
8668 }
8669
8670 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8671 struct nlattr *attr,
8672 struct cfg80211_wowlan *trig)
8673 {
8674 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8675 struct cfg80211_wowlan_tcp *cfg;
8676 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8677 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8678 u32 size;
8679 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8680 int err, port;
8681
8682 if (!rdev->wiphy.wowlan->tcp)
8683 return -EINVAL;
8684
8685 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8686 nla_data(attr), nla_len(attr),
8687 nl80211_wowlan_tcp_policy);
8688 if (err)
8689 return err;
8690
8691 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8692 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8693 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8694 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8695 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8696 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8697 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8698 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8699 return -EINVAL;
8700
8701 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8702 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8703 return -EINVAL;
8704
8705 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8706 rdev->wiphy.wowlan->tcp->data_interval_max ||
8707 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8708 return -EINVAL;
8709
8710 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8711 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8712 return -EINVAL;
8713
8714 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8715 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8716 return -EINVAL;
8717
8718 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8719 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8720
8721 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8722 tokens_size = tokln - sizeof(*tok);
8723
8724 if (!tok->len || tokens_size % tok->len)
8725 return -EINVAL;
8726 if (!rdev->wiphy.wowlan->tcp->tok)
8727 return -EINVAL;
8728 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8729 return -EINVAL;
8730 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8731 return -EINVAL;
8732 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8733 return -EINVAL;
8734 if (tok->offset + tok->len > data_size)
8735 return -EINVAL;
8736 }
8737
8738 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8739 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8740 if (!rdev->wiphy.wowlan->tcp->seq)
8741 return -EINVAL;
8742 if (seq->len == 0 || seq->len > 4)
8743 return -EINVAL;
8744 if (seq->len + seq->offset > data_size)
8745 return -EINVAL;
8746 }
8747
8748 size = sizeof(*cfg);
8749 size += data_size;
8750 size += wake_size + wake_mask_size;
8751 size += tokens_size;
8752
8753 cfg = kzalloc(size, GFP_KERNEL);
8754 if (!cfg)
8755 return -ENOMEM;
8756 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8757 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8758 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8759 ETH_ALEN);
8760 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8761 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8762 else
8763 port = 0;
8764 #ifdef CONFIG_INET
8765 /* allocate a socket and port for it and use it */
8766 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8767 IPPROTO_TCP, &cfg->sock, 1);
8768 if (err) {
8769 kfree(cfg);
8770 return err;
8771 }
8772 if (inet_csk_get_port(cfg->sock->sk, port)) {
8773 sock_release(cfg->sock);
8774 kfree(cfg);
8775 return -EADDRINUSE;
8776 }
8777 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8778 #else
8779 if (!port) {
8780 kfree(cfg);
8781 return -EINVAL;
8782 }
8783 cfg->src_port = port;
8784 #endif
8785
8786 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8787 cfg->payload_len = data_size;
8788 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8789 memcpy((void *)cfg->payload,
8790 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8791 data_size);
8792 if (seq)
8793 cfg->payload_seq = *seq;
8794 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8795 cfg->wake_len = wake_size;
8796 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8797 memcpy((void *)cfg->wake_data,
8798 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8799 wake_size);
8800 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8801 data_size + wake_size;
8802 memcpy((void *)cfg->wake_mask,
8803 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8804 wake_mask_size);
8805 if (tok) {
8806 cfg->tokens_size = tokens_size;
8807 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8808 }
8809
8810 trig->tcp = cfg;
8811
8812 return 0;
8813 }
8814
8815 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8816 const struct wiphy_wowlan_support *wowlan,
8817 struct nlattr *attr,
8818 struct cfg80211_wowlan *trig)
8819 {
8820 struct nlattr **tb;
8821 int err;
8822
8823 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8824 if (!tb)
8825 return -ENOMEM;
8826
8827 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8828 err = -EOPNOTSUPP;
8829 goto out;
8830 }
8831
8832 err = nla_parse(tb, NL80211_ATTR_MAX,
8833 nla_data(attr), nla_len(attr),
8834 nl80211_policy);
8835 if (err)
8836 goto out;
8837
8838 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8839 err = PTR_ERR_OR_ZERO(trig->nd_config);
8840 if (err)
8841 trig->nd_config = NULL;
8842
8843 out:
8844 kfree(tb);
8845 return err;
8846 }
8847
8848 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8849 {
8850 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8851 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8852 struct cfg80211_wowlan new_triggers = {};
8853 struct cfg80211_wowlan *ntrig;
8854 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8855 int err, i;
8856 bool prev_enabled = rdev->wiphy.wowlan_config;
8857
8858 if (!wowlan)
8859 return -EOPNOTSUPP;
8860
8861 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8862 cfg80211_rdev_free_wowlan(rdev);
8863 rdev->wiphy.wowlan_config = NULL;
8864 goto set_wakeup;
8865 }
8866
8867 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8868 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8869 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8870 nl80211_wowlan_policy);
8871 if (err)
8872 return err;
8873
8874 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8875 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8876 return -EINVAL;
8877 new_triggers.any = true;
8878 }
8879
8880 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8881 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8882 return -EINVAL;
8883 new_triggers.disconnect = true;
8884 }
8885
8886 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8887 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8888 return -EINVAL;
8889 new_triggers.magic_pkt = true;
8890 }
8891
8892 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8893 return -EINVAL;
8894
8895 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8896 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8897 return -EINVAL;
8898 new_triggers.gtk_rekey_failure = true;
8899 }
8900
8901 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8902 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8903 return -EINVAL;
8904 new_triggers.eap_identity_req = true;
8905 }
8906
8907 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8908 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8909 return -EINVAL;
8910 new_triggers.four_way_handshake = true;
8911 }
8912
8913 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8914 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8915 return -EINVAL;
8916 new_triggers.rfkill_release = true;
8917 }
8918
8919 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8920 struct nlattr *pat;
8921 int n_patterns = 0;
8922 int rem, pat_len, mask_len, pkt_offset;
8923 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8924
8925 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8926 rem)
8927 n_patterns++;
8928 if (n_patterns > wowlan->n_patterns)
8929 return -EINVAL;
8930
8931 new_triggers.patterns = kcalloc(n_patterns,
8932 sizeof(new_triggers.patterns[0]),
8933 GFP_KERNEL);
8934 if (!new_triggers.patterns)
8935 return -ENOMEM;
8936
8937 new_triggers.n_patterns = n_patterns;
8938 i = 0;
8939
8940 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8941 rem) {
8942 u8 *mask_pat;
8943
8944 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8945 nla_len(pat), NULL);
8946 err = -EINVAL;
8947 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8948 !pat_tb[NL80211_PKTPAT_PATTERN])
8949 goto error;
8950 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8951 mask_len = DIV_ROUND_UP(pat_len, 8);
8952 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8953 goto error;
8954 if (pat_len > wowlan->pattern_max_len ||
8955 pat_len < wowlan->pattern_min_len)
8956 goto error;
8957
8958 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8959 pkt_offset = 0;
8960 else
8961 pkt_offset = nla_get_u32(
8962 pat_tb[NL80211_PKTPAT_OFFSET]);
8963 if (pkt_offset > wowlan->max_pkt_offset)
8964 goto error;
8965 new_triggers.patterns[i].pkt_offset = pkt_offset;
8966
8967 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8968 if (!mask_pat) {
8969 err = -ENOMEM;
8970 goto error;
8971 }
8972 new_triggers.patterns[i].mask = mask_pat;
8973 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8974 mask_len);
8975 mask_pat += mask_len;
8976 new_triggers.patterns[i].pattern = mask_pat;
8977 new_triggers.patterns[i].pattern_len = pat_len;
8978 memcpy(mask_pat,
8979 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8980 pat_len);
8981 i++;
8982 }
8983 }
8984
8985 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8986 err = nl80211_parse_wowlan_tcp(
8987 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8988 &new_triggers);
8989 if (err)
8990 goto error;
8991 }
8992
8993 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
8994 err = nl80211_parse_wowlan_nd(
8995 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
8996 &new_triggers);
8997 if (err)
8998 goto error;
8999 }
9000
9001 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9002 if (!ntrig) {
9003 err = -ENOMEM;
9004 goto error;
9005 }
9006 cfg80211_rdev_free_wowlan(rdev);
9007 rdev->wiphy.wowlan_config = ntrig;
9008
9009 set_wakeup:
9010 if (rdev->ops->set_wakeup &&
9011 prev_enabled != !!rdev->wiphy.wowlan_config)
9012 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9013
9014 return 0;
9015 error:
9016 for (i = 0; i < new_triggers.n_patterns; i++)
9017 kfree(new_triggers.patterns[i].mask);
9018 kfree(new_triggers.patterns);
9019 if (new_triggers.tcp && new_triggers.tcp->sock)
9020 sock_release(new_triggers.tcp->sock);
9021 kfree(new_triggers.tcp);
9022 return err;
9023 }
9024 #endif
9025
9026 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9027 struct cfg80211_registered_device *rdev)
9028 {
9029 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9030 int i, j, pat_len;
9031 struct cfg80211_coalesce_rules *rule;
9032
9033 if (!rdev->coalesce->n_rules)
9034 return 0;
9035
9036 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9037 if (!nl_rules)
9038 return -ENOBUFS;
9039
9040 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9041 nl_rule = nla_nest_start(msg, i + 1);
9042 if (!nl_rule)
9043 return -ENOBUFS;
9044
9045 rule = &rdev->coalesce->rules[i];
9046 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9047 rule->delay))
9048 return -ENOBUFS;
9049
9050 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9051 rule->condition))
9052 return -ENOBUFS;
9053
9054 nl_pats = nla_nest_start(msg,
9055 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9056 if (!nl_pats)
9057 return -ENOBUFS;
9058
9059 for (j = 0; j < rule->n_patterns; j++) {
9060 nl_pat = nla_nest_start(msg, j + 1);
9061 if (!nl_pat)
9062 return -ENOBUFS;
9063 pat_len = rule->patterns[j].pattern_len;
9064 if (nla_put(msg, NL80211_PKTPAT_MASK,
9065 DIV_ROUND_UP(pat_len, 8),
9066 rule->patterns[j].mask) ||
9067 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9068 rule->patterns[j].pattern) ||
9069 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9070 rule->patterns[j].pkt_offset))
9071 return -ENOBUFS;
9072 nla_nest_end(msg, nl_pat);
9073 }
9074 nla_nest_end(msg, nl_pats);
9075 nla_nest_end(msg, nl_rule);
9076 }
9077 nla_nest_end(msg, nl_rules);
9078
9079 return 0;
9080 }
9081
9082 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9083 {
9084 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9085 struct sk_buff *msg;
9086 void *hdr;
9087
9088 if (!rdev->wiphy.coalesce)
9089 return -EOPNOTSUPP;
9090
9091 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9092 if (!msg)
9093 return -ENOMEM;
9094
9095 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9096 NL80211_CMD_GET_COALESCE);
9097 if (!hdr)
9098 goto nla_put_failure;
9099
9100 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9101 goto nla_put_failure;
9102
9103 genlmsg_end(msg, hdr);
9104 return genlmsg_reply(msg, info);
9105
9106 nla_put_failure:
9107 nlmsg_free(msg);
9108 return -ENOBUFS;
9109 }
9110
9111 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9112 {
9113 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9114 int i, j;
9115 struct cfg80211_coalesce_rules *rule;
9116
9117 if (!coalesce)
9118 return;
9119
9120 for (i = 0; i < coalesce->n_rules; i++) {
9121 rule = &coalesce->rules[i];
9122 for (j = 0; j < rule->n_patterns; j++)
9123 kfree(rule->patterns[j].mask);
9124 kfree(rule->patterns);
9125 }
9126 kfree(coalesce->rules);
9127 kfree(coalesce);
9128 rdev->coalesce = NULL;
9129 }
9130
9131 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9132 struct nlattr *rule,
9133 struct cfg80211_coalesce_rules *new_rule)
9134 {
9135 int err, i;
9136 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9137 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9138 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9139 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9140
9141 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9142 nla_len(rule), nl80211_coalesce_policy);
9143 if (err)
9144 return err;
9145
9146 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9147 new_rule->delay =
9148 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9149 if (new_rule->delay > coalesce->max_delay)
9150 return -EINVAL;
9151
9152 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9153 new_rule->condition =
9154 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9155 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9156 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9157 return -EINVAL;
9158
9159 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9160 return -EINVAL;
9161
9162 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9163 rem)
9164 n_patterns++;
9165 if (n_patterns > coalesce->n_patterns)
9166 return -EINVAL;
9167
9168 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9169 GFP_KERNEL);
9170 if (!new_rule->patterns)
9171 return -ENOMEM;
9172
9173 new_rule->n_patterns = n_patterns;
9174 i = 0;
9175
9176 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9177 rem) {
9178 u8 *mask_pat;
9179
9180 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9181 nla_len(pat), NULL);
9182 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9183 !pat_tb[NL80211_PKTPAT_PATTERN])
9184 return -EINVAL;
9185 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9186 mask_len = DIV_ROUND_UP(pat_len, 8);
9187 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9188 return -EINVAL;
9189 if (pat_len > coalesce->pattern_max_len ||
9190 pat_len < coalesce->pattern_min_len)
9191 return -EINVAL;
9192
9193 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9194 pkt_offset = 0;
9195 else
9196 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9197 if (pkt_offset > coalesce->max_pkt_offset)
9198 return -EINVAL;
9199 new_rule->patterns[i].pkt_offset = pkt_offset;
9200
9201 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9202 if (!mask_pat)
9203 return -ENOMEM;
9204
9205 new_rule->patterns[i].mask = mask_pat;
9206 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9207 mask_len);
9208
9209 mask_pat += mask_len;
9210 new_rule->patterns[i].pattern = mask_pat;
9211 new_rule->patterns[i].pattern_len = pat_len;
9212 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9213 pat_len);
9214 i++;
9215 }
9216
9217 return 0;
9218 }
9219
9220 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9221 {
9222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9223 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9224 struct cfg80211_coalesce new_coalesce = {};
9225 struct cfg80211_coalesce *n_coalesce;
9226 int err, rem_rule, n_rules = 0, i, j;
9227 struct nlattr *rule;
9228 struct cfg80211_coalesce_rules *tmp_rule;
9229
9230 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9231 return -EOPNOTSUPP;
9232
9233 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9234 cfg80211_rdev_free_coalesce(rdev);
9235 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9236 return 0;
9237 }
9238
9239 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9240 rem_rule)
9241 n_rules++;
9242 if (n_rules > coalesce->n_rules)
9243 return -EINVAL;
9244
9245 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9246 GFP_KERNEL);
9247 if (!new_coalesce.rules)
9248 return -ENOMEM;
9249
9250 new_coalesce.n_rules = n_rules;
9251 i = 0;
9252
9253 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9254 rem_rule) {
9255 err = nl80211_parse_coalesce_rule(rdev, rule,
9256 &new_coalesce.rules[i]);
9257 if (err)
9258 goto error;
9259
9260 i++;
9261 }
9262
9263 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9264 if (err)
9265 goto error;
9266
9267 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9268 if (!n_coalesce) {
9269 err = -ENOMEM;
9270 goto error;
9271 }
9272 cfg80211_rdev_free_coalesce(rdev);
9273 rdev->coalesce = n_coalesce;
9274
9275 return 0;
9276 error:
9277 for (i = 0; i < new_coalesce.n_rules; i++) {
9278 tmp_rule = &new_coalesce.rules[i];
9279 for (j = 0; j < tmp_rule->n_patterns; j++)
9280 kfree(tmp_rule->patterns[j].mask);
9281 kfree(tmp_rule->patterns);
9282 }
9283 kfree(new_coalesce.rules);
9284
9285 return err;
9286 }
9287
9288 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9289 {
9290 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9291 struct net_device *dev = info->user_ptr[1];
9292 struct wireless_dev *wdev = dev->ieee80211_ptr;
9293 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9294 struct cfg80211_gtk_rekey_data rekey_data;
9295 int err;
9296
9297 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9298 return -EINVAL;
9299
9300 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9301 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9302 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9303 nl80211_rekey_policy);
9304 if (err)
9305 return err;
9306
9307 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9308 return -ERANGE;
9309 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9310 return -ERANGE;
9311 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9312 return -ERANGE;
9313
9314 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9315 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9316 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9317
9318 wdev_lock(wdev);
9319 if (!wdev->current_bss) {
9320 err = -ENOTCONN;
9321 goto out;
9322 }
9323
9324 if (!rdev->ops->set_rekey_data) {
9325 err = -EOPNOTSUPP;
9326 goto out;
9327 }
9328
9329 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9330 out:
9331 wdev_unlock(wdev);
9332 return err;
9333 }
9334
9335 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9336 struct genl_info *info)
9337 {
9338 struct net_device *dev = info->user_ptr[1];
9339 struct wireless_dev *wdev = dev->ieee80211_ptr;
9340
9341 if (wdev->iftype != NL80211_IFTYPE_AP &&
9342 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9343 return -EINVAL;
9344
9345 if (wdev->ap_unexpected_nlportid)
9346 return -EBUSY;
9347
9348 wdev->ap_unexpected_nlportid = info->snd_portid;
9349 return 0;
9350 }
9351
9352 static int nl80211_probe_client(struct sk_buff *skb,
9353 struct genl_info *info)
9354 {
9355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9356 struct net_device *dev = info->user_ptr[1];
9357 struct wireless_dev *wdev = dev->ieee80211_ptr;
9358 struct sk_buff *msg;
9359 void *hdr;
9360 const u8 *addr;
9361 u64 cookie;
9362 int err;
9363
9364 if (wdev->iftype != NL80211_IFTYPE_AP &&
9365 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9366 return -EOPNOTSUPP;
9367
9368 if (!info->attrs[NL80211_ATTR_MAC])
9369 return -EINVAL;
9370
9371 if (!rdev->ops->probe_client)
9372 return -EOPNOTSUPP;
9373
9374 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9375 if (!msg)
9376 return -ENOMEM;
9377
9378 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9379 NL80211_CMD_PROBE_CLIENT);
9380 if (!hdr) {
9381 err = -ENOBUFS;
9382 goto free_msg;
9383 }
9384
9385 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9386
9387 err = rdev_probe_client(rdev, dev, addr, &cookie);
9388 if (err)
9389 goto free_msg;
9390
9391 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9392 goto nla_put_failure;
9393
9394 genlmsg_end(msg, hdr);
9395
9396 return genlmsg_reply(msg, info);
9397
9398 nla_put_failure:
9399 err = -ENOBUFS;
9400 free_msg:
9401 nlmsg_free(msg);
9402 return err;
9403 }
9404
9405 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9406 {
9407 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9408 struct cfg80211_beacon_registration *reg, *nreg;
9409 int rv;
9410
9411 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9412 return -EOPNOTSUPP;
9413
9414 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9415 if (!nreg)
9416 return -ENOMEM;
9417
9418 /* First, check if already registered. */
9419 spin_lock_bh(&rdev->beacon_registrations_lock);
9420 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9421 if (reg->nlportid == info->snd_portid) {
9422 rv = -EALREADY;
9423 goto out_err;
9424 }
9425 }
9426 /* Add it to the list */
9427 nreg->nlportid = info->snd_portid;
9428 list_add(&nreg->list, &rdev->beacon_registrations);
9429
9430 spin_unlock_bh(&rdev->beacon_registrations_lock);
9431
9432 return 0;
9433 out_err:
9434 spin_unlock_bh(&rdev->beacon_registrations_lock);
9435 kfree(nreg);
9436 return rv;
9437 }
9438
9439 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9440 {
9441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9442 struct wireless_dev *wdev = info->user_ptr[1];
9443 int err;
9444
9445 if (!rdev->ops->start_p2p_device)
9446 return -EOPNOTSUPP;
9447
9448 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9449 return -EOPNOTSUPP;
9450
9451 if (wdev->p2p_started)
9452 return 0;
9453
9454 if (rfkill_blocked(rdev->rfkill))
9455 return -ERFKILL;
9456
9457 err = rdev_start_p2p_device(rdev, wdev);
9458 if (err)
9459 return err;
9460
9461 wdev->p2p_started = true;
9462 rdev->opencount++;
9463
9464 return 0;
9465 }
9466
9467 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9468 {
9469 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9470 struct wireless_dev *wdev = info->user_ptr[1];
9471
9472 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9473 return -EOPNOTSUPP;
9474
9475 if (!rdev->ops->stop_p2p_device)
9476 return -EOPNOTSUPP;
9477
9478 cfg80211_stop_p2p_device(rdev, wdev);
9479
9480 return 0;
9481 }
9482
9483 static int nl80211_get_protocol_features(struct sk_buff *skb,
9484 struct genl_info *info)
9485 {
9486 void *hdr;
9487 struct sk_buff *msg;
9488
9489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9490 if (!msg)
9491 return -ENOMEM;
9492
9493 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9494 NL80211_CMD_GET_PROTOCOL_FEATURES);
9495 if (!hdr)
9496 goto nla_put_failure;
9497
9498 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9499 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9500 goto nla_put_failure;
9501
9502 genlmsg_end(msg, hdr);
9503 return genlmsg_reply(msg, info);
9504
9505 nla_put_failure:
9506 kfree_skb(msg);
9507 return -ENOBUFS;
9508 }
9509
9510 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9511 {
9512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9513 struct cfg80211_update_ft_ies_params ft_params;
9514 struct net_device *dev = info->user_ptr[1];
9515
9516 if (!rdev->ops->update_ft_ies)
9517 return -EOPNOTSUPP;
9518
9519 if (!info->attrs[NL80211_ATTR_MDID] ||
9520 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9521 return -EINVAL;
9522
9523 memset(&ft_params, 0, sizeof(ft_params));
9524 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9525 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9526 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9527
9528 return rdev_update_ft_ies(rdev, dev, &ft_params);
9529 }
9530
9531 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9532 struct genl_info *info)
9533 {
9534 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9535 struct wireless_dev *wdev = info->user_ptr[1];
9536 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9537 u16 duration;
9538 int ret;
9539
9540 if (!rdev->ops->crit_proto_start)
9541 return -EOPNOTSUPP;
9542
9543 if (WARN_ON(!rdev->ops->crit_proto_stop))
9544 return -EINVAL;
9545
9546 if (rdev->crit_proto_nlportid)
9547 return -EBUSY;
9548
9549 /* determine protocol if provided */
9550 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9551 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9552
9553 if (proto >= NUM_NL80211_CRIT_PROTO)
9554 return -EINVAL;
9555
9556 /* timeout must be provided */
9557 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9558 return -EINVAL;
9559
9560 duration =
9561 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9562
9563 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9564 return -ERANGE;
9565
9566 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9567 if (!ret)
9568 rdev->crit_proto_nlportid = info->snd_portid;
9569
9570 return ret;
9571 }
9572
9573 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9574 struct genl_info *info)
9575 {
9576 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9577 struct wireless_dev *wdev = info->user_ptr[1];
9578
9579 if (!rdev->ops->crit_proto_stop)
9580 return -EOPNOTSUPP;
9581
9582 if (rdev->crit_proto_nlportid) {
9583 rdev->crit_proto_nlportid = 0;
9584 rdev_crit_proto_stop(rdev, wdev);
9585 }
9586 return 0;
9587 }
9588
9589 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9590 {
9591 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9592 struct wireless_dev *wdev =
9593 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9594 int i, err;
9595 u32 vid, subcmd;
9596
9597 if (!rdev->wiphy.vendor_commands)
9598 return -EOPNOTSUPP;
9599
9600 if (IS_ERR(wdev)) {
9601 err = PTR_ERR(wdev);
9602 if (err != -EINVAL)
9603 return err;
9604 wdev = NULL;
9605 } else if (wdev->wiphy != &rdev->wiphy) {
9606 return -EINVAL;
9607 }
9608
9609 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9610 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9611 return -EINVAL;
9612
9613 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9614 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9615 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9616 const struct wiphy_vendor_command *vcmd;
9617 void *data = NULL;
9618 int len = 0;
9619
9620 vcmd = &rdev->wiphy.vendor_commands[i];
9621
9622 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9623 continue;
9624
9625 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9626 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9627 if (!wdev)
9628 return -EINVAL;
9629 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9630 !wdev->netdev)
9631 return -EINVAL;
9632
9633 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9634 if (wdev->netdev &&
9635 !netif_running(wdev->netdev))
9636 return -ENETDOWN;
9637 if (!wdev->netdev && !wdev->p2p_started)
9638 return -ENETDOWN;
9639 }
9640 } else {
9641 wdev = NULL;
9642 }
9643
9644 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9645 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9646 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9647 }
9648
9649 rdev->cur_cmd_info = info;
9650 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9651 data, len);
9652 rdev->cur_cmd_info = NULL;
9653 return err;
9654 }
9655
9656 return -EOPNOTSUPP;
9657 }
9658
9659 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9660 enum nl80211_commands cmd,
9661 enum nl80211_attrs attr,
9662 int approxlen)
9663 {
9664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9665
9666 if (WARN_ON(!rdev->cur_cmd_info))
9667 return NULL;
9668
9669 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9670 rdev->cur_cmd_info->snd_portid,
9671 rdev->cur_cmd_info->snd_seq,
9672 cmd, attr, NULL, GFP_KERNEL);
9673 }
9674 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9675
9676 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9677 {
9678 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9679 void *hdr = ((void **)skb->cb)[1];
9680 struct nlattr *data = ((void **)skb->cb)[2];
9681
9682 /* clear CB data for netlink core to own from now on */
9683 memset(skb->cb, 0, sizeof(skb->cb));
9684
9685 if (WARN_ON(!rdev->cur_cmd_info)) {
9686 kfree_skb(skb);
9687 return -EINVAL;
9688 }
9689
9690 nla_nest_end(skb, data);
9691 genlmsg_end(skb, hdr);
9692 return genlmsg_reply(skb, rdev->cur_cmd_info);
9693 }
9694 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9695
9696
9697 static int nl80211_set_qos_map(struct sk_buff *skb,
9698 struct genl_info *info)
9699 {
9700 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9701 struct cfg80211_qos_map *qos_map = NULL;
9702 struct net_device *dev = info->user_ptr[1];
9703 u8 *pos, len, num_des, des_len, des;
9704 int ret;
9705
9706 if (!rdev->ops->set_qos_map)
9707 return -EOPNOTSUPP;
9708
9709 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9710 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9711 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9712
9713 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9714 len > IEEE80211_QOS_MAP_LEN_MAX)
9715 return -EINVAL;
9716
9717 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9718 if (!qos_map)
9719 return -ENOMEM;
9720
9721 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9722 if (num_des) {
9723 des_len = num_des *
9724 sizeof(struct cfg80211_dscp_exception);
9725 memcpy(qos_map->dscp_exception, pos, des_len);
9726 qos_map->num_des = num_des;
9727 for (des = 0; des < num_des; des++) {
9728 if (qos_map->dscp_exception[des].up > 7) {
9729 kfree(qos_map);
9730 return -EINVAL;
9731 }
9732 }
9733 pos += des_len;
9734 }
9735 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9736 }
9737
9738 wdev_lock(dev->ieee80211_ptr);
9739 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9740 if (!ret)
9741 ret = rdev_set_qos_map(rdev, dev, qos_map);
9742 wdev_unlock(dev->ieee80211_ptr);
9743
9744 kfree(qos_map);
9745 return ret;
9746 }
9747
9748 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9749 {
9750 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9751 struct net_device *dev = info->user_ptr[1];
9752 struct wireless_dev *wdev = dev->ieee80211_ptr;
9753 const u8 *peer;
9754 u8 tsid, up;
9755 u16 admitted_time = 0;
9756 int err;
9757
9758 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9759 return -EOPNOTSUPP;
9760
9761 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9762 !info->attrs[NL80211_ATTR_USER_PRIO])
9763 return -EINVAL;
9764
9765 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9766 if (tsid >= IEEE80211_NUM_TIDS)
9767 return -EINVAL;
9768
9769 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9770 if (up >= IEEE80211_NUM_UPS)
9771 return -EINVAL;
9772
9773 /* WMM uses TIDs 0-7 even for TSPEC */
9774 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9775 /* TODO: handle 802.11 TSPEC/admission control
9776 * need more attributes for that (e.g. BA session requirement);
9777 * change the WMM adminssion test above to allow both then
9778 */
9779 return -EINVAL;
9780 }
9781
9782 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9783
9784 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9785 admitted_time =
9786 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9787 if (!admitted_time)
9788 return -EINVAL;
9789 }
9790
9791 wdev_lock(wdev);
9792 switch (wdev->iftype) {
9793 case NL80211_IFTYPE_STATION:
9794 case NL80211_IFTYPE_P2P_CLIENT:
9795 if (wdev->current_bss)
9796 break;
9797 err = -ENOTCONN;
9798 goto out;
9799 default:
9800 err = -EOPNOTSUPP;
9801 goto out;
9802 }
9803
9804 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9805
9806 out:
9807 wdev_unlock(wdev);
9808 return err;
9809 }
9810
9811 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9812 {
9813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9814 struct net_device *dev = info->user_ptr[1];
9815 struct wireless_dev *wdev = dev->ieee80211_ptr;
9816 const u8 *peer;
9817 u8 tsid;
9818 int err;
9819
9820 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9821 return -EINVAL;
9822
9823 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9824 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9825
9826 wdev_lock(wdev);
9827 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9828 wdev_unlock(wdev);
9829
9830 return err;
9831 }
9832
9833 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9834 struct genl_info *info)
9835 {
9836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9837 struct net_device *dev = info->user_ptr[1];
9838 struct wireless_dev *wdev = dev->ieee80211_ptr;
9839 struct cfg80211_chan_def chandef = {};
9840 const u8 *addr;
9841 u8 oper_class;
9842 int err;
9843
9844 if (!rdev->ops->tdls_channel_switch ||
9845 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9846 return -EOPNOTSUPP;
9847
9848 switch (dev->ieee80211_ptr->iftype) {
9849 case NL80211_IFTYPE_STATION:
9850 case NL80211_IFTYPE_P2P_CLIENT:
9851 break;
9852 default:
9853 return -EOPNOTSUPP;
9854 }
9855
9856 if (!info->attrs[NL80211_ATTR_MAC] ||
9857 !info->attrs[NL80211_ATTR_OPER_CLASS])
9858 return -EINVAL;
9859
9860 err = nl80211_parse_chandef(rdev, info, &chandef);
9861 if (err)
9862 return err;
9863
9864 /*
9865 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9866 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9867 * specification is not defined for them.
9868 */
9869 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9870 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9871 chandef.width != NL80211_CHAN_WIDTH_20)
9872 return -EINVAL;
9873
9874 /* we will be active on the TDLS link */
9875 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
9876 return -EINVAL;
9877
9878 /* don't allow switching to DFS channels */
9879 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
9880 return -EINVAL;
9881
9882 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9883 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
9884
9885 wdev_lock(wdev);
9886 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
9887 wdev_unlock(wdev);
9888
9889 return err;
9890 }
9891
9892 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
9893 struct genl_info *info)
9894 {
9895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9896 struct net_device *dev = info->user_ptr[1];
9897 struct wireless_dev *wdev = dev->ieee80211_ptr;
9898 const u8 *addr;
9899
9900 if (!rdev->ops->tdls_channel_switch ||
9901 !rdev->ops->tdls_cancel_channel_switch ||
9902 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9903 return -EOPNOTSUPP;
9904
9905 switch (dev->ieee80211_ptr->iftype) {
9906 case NL80211_IFTYPE_STATION:
9907 case NL80211_IFTYPE_P2P_CLIENT:
9908 break;
9909 default:
9910 return -EOPNOTSUPP;
9911 }
9912
9913 if (!info->attrs[NL80211_ATTR_MAC])
9914 return -EINVAL;
9915
9916 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9917
9918 wdev_lock(wdev);
9919 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
9920 wdev_unlock(wdev);
9921
9922 return 0;
9923 }
9924
9925 #define NL80211_FLAG_NEED_WIPHY 0x01
9926 #define NL80211_FLAG_NEED_NETDEV 0x02
9927 #define NL80211_FLAG_NEED_RTNL 0x04
9928 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9929 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9930 NL80211_FLAG_CHECK_NETDEV_UP)
9931 #define NL80211_FLAG_NEED_WDEV 0x10
9932 /* If a netdev is associated, it must be UP, P2P must be started */
9933 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9934 NL80211_FLAG_CHECK_NETDEV_UP)
9935 #define NL80211_FLAG_CLEAR_SKB 0x20
9936
9937 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9938 struct genl_info *info)
9939 {
9940 struct cfg80211_registered_device *rdev;
9941 struct wireless_dev *wdev;
9942 struct net_device *dev;
9943 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9944
9945 if (rtnl)
9946 rtnl_lock();
9947
9948 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9949 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9950 if (IS_ERR(rdev)) {
9951 if (rtnl)
9952 rtnl_unlock();
9953 return PTR_ERR(rdev);
9954 }
9955 info->user_ptr[0] = rdev;
9956 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9957 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9958 ASSERT_RTNL();
9959
9960 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9961 info->attrs);
9962 if (IS_ERR(wdev)) {
9963 if (rtnl)
9964 rtnl_unlock();
9965 return PTR_ERR(wdev);
9966 }
9967
9968 dev = wdev->netdev;
9969 rdev = wiphy_to_rdev(wdev->wiphy);
9970
9971 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9972 if (!dev) {
9973 if (rtnl)
9974 rtnl_unlock();
9975 return -EINVAL;
9976 }
9977
9978 info->user_ptr[1] = dev;
9979 } else {
9980 info->user_ptr[1] = wdev;
9981 }
9982
9983 if (dev) {
9984 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9985 !netif_running(dev)) {
9986 if (rtnl)
9987 rtnl_unlock();
9988 return -ENETDOWN;
9989 }
9990
9991 dev_hold(dev);
9992 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9993 if (!wdev->p2p_started) {
9994 if (rtnl)
9995 rtnl_unlock();
9996 return -ENETDOWN;
9997 }
9998 }
9999
10000 info->user_ptr[0] = rdev;
10001 }
10002
10003 return 0;
10004 }
10005
10006 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10007 struct genl_info *info)
10008 {
10009 if (info->user_ptr[1]) {
10010 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10011 struct wireless_dev *wdev = info->user_ptr[1];
10012
10013 if (wdev->netdev)
10014 dev_put(wdev->netdev);
10015 } else {
10016 dev_put(info->user_ptr[1]);
10017 }
10018 }
10019
10020 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10021 rtnl_unlock();
10022
10023 /* If needed, clear the netlink message payload from the SKB
10024 * as it might contain key data that shouldn't stick around on
10025 * the heap after the SKB is freed. The netlink message header
10026 * is still needed for further processing, so leave it intact.
10027 */
10028 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10029 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10030
10031 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10032 }
10033 }
10034
10035 static const struct genl_ops nl80211_ops[] = {
10036 {
10037 .cmd = NL80211_CMD_GET_WIPHY,
10038 .doit = nl80211_get_wiphy,
10039 .dumpit = nl80211_dump_wiphy,
10040 .done = nl80211_dump_wiphy_done,
10041 .policy = nl80211_policy,
10042 /* can be retrieved by unprivileged users */
10043 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10044 NL80211_FLAG_NEED_RTNL,
10045 },
10046 {
10047 .cmd = NL80211_CMD_SET_WIPHY,
10048 .doit = nl80211_set_wiphy,
10049 .policy = nl80211_policy,
10050 .flags = GENL_ADMIN_PERM,
10051 .internal_flags = NL80211_FLAG_NEED_RTNL,
10052 },
10053 {
10054 .cmd = NL80211_CMD_GET_INTERFACE,
10055 .doit = nl80211_get_interface,
10056 .dumpit = nl80211_dump_interface,
10057 .policy = nl80211_policy,
10058 /* can be retrieved by unprivileged users */
10059 .internal_flags = NL80211_FLAG_NEED_WDEV |
10060 NL80211_FLAG_NEED_RTNL,
10061 },
10062 {
10063 .cmd = NL80211_CMD_SET_INTERFACE,
10064 .doit = nl80211_set_interface,
10065 .policy = nl80211_policy,
10066 .flags = GENL_ADMIN_PERM,
10067 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10068 NL80211_FLAG_NEED_RTNL,
10069 },
10070 {
10071 .cmd = NL80211_CMD_NEW_INTERFACE,
10072 .doit = nl80211_new_interface,
10073 .policy = nl80211_policy,
10074 .flags = GENL_ADMIN_PERM,
10075 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10076 NL80211_FLAG_NEED_RTNL,
10077 },
10078 {
10079 .cmd = NL80211_CMD_DEL_INTERFACE,
10080 .doit = nl80211_del_interface,
10081 .policy = nl80211_policy,
10082 .flags = GENL_ADMIN_PERM,
10083 .internal_flags = NL80211_FLAG_NEED_WDEV |
10084 NL80211_FLAG_NEED_RTNL,
10085 },
10086 {
10087 .cmd = NL80211_CMD_GET_KEY,
10088 .doit = nl80211_get_key,
10089 .policy = nl80211_policy,
10090 .flags = GENL_ADMIN_PERM,
10091 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10092 NL80211_FLAG_NEED_RTNL,
10093 },
10094 {
10095 .cmd = NL80211_CMD_SET_KEY,
10096 .doit = nl80211_set_key,
10097 .policy = nl80211_policy,
10098 .flags = GENL_ADMIN_PERM,
10099 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10100 NL80211_FLAG_NEED_RTNL |
10101 NL80211_FLAG_CLEAR_SKB,
10102 },
10103 {
10104 .cmd = NL80211_CMD_NEW_KEY,
10105 .doit = nl80211_new_key,
10106 .policy = nl80211_policy,
10107 .flags = GENL_ADMIN_PERM,
10108 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10109 NL80211_FLAG_NEED_RTNL |
10110 NL80211_FLAG_CLEAR_SKB,
10111 },
10112 {
10113 .cmd = NL80211_CMD_DEL_KEY,
10114 .doit = nl80211_del_key,
10115 .policy = nl80211_policy,
10116 .flags = GENL_ADMIN_PERM,
10117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10118 NL80211_FLAG_NEED_RTNL,
10119 },
10120 {
10121 .cmd = NL80211_CMD_SET_BEACON,
10122 .policy = nl80211_policy,
10123 .flags = GENL_ADMIN_PERM,
10124 .doit = nl80211_set_beacon,
10125 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10126 NL80211_FLAG_NEED_RTNL,
10127 },
10128 {
10129 .cmd = NL80211_CMD_START_AP,
10130 .policy = nl80211_policy,
10131 .flags = GENL_ADMIN_PERM,
10132 .doit = nl80211_start_ap,
10133 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10134 NL80211_FLAG_NEED_RTNL,
10135 },
10136 {
10137 .cmd = NL80211_CMD_STOP_AP,
10138 .policy = nl80211_policy,
10139 .flags = GENL_ADMIN_PERM,
10140 .doit = nl80211_stop_ap,
10141 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10142 NL80211_FLAG_NEED_RTNL,
10143 },
10144 {
10145 .cmd = NL80211_CMD_GET_STATION,
10146 .doit = nl80211_get_station,
10147 .dumpit = nl80211_dump_station,
10148 .policy = nl80211_policy,
10149 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10150 NL80211_FLAG_NEED_RTNL,
10151 },
10152 {
10153 .cmd = NL80211_CMD_SET_STATION,
10154 .doit = nl80211_set_station,
10155 .policy = nl80211_policy,
10156 .flags = GENL_ADMIN_PERM,
10157 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10158 NL80211_FLAG_NEED_RTNL,
10159 },
10160 {
10161 .cmd = NL80211_CMD_NEW_STATION,
10162 .doit = nl80211_new_station,
10163 .policy = nl80211_policy,
10164 .flags = GENL_ADMIN_PERM,
10165 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10166 NL80211_FLAG_NEED_RTNL,
10167 },
10168 {
10169 .cmd = NL80211_CMD_DEL_STATION,
10170 .doit = nl80211_del_station,
10171 .policy = nl80211_policy,
10172 .flags = GENL_ADMIN_PERM,
10173 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10174 NL80211_FLAG_NEED_RTNL,
10175 },
10176 {
10177 .cmd = NL80211_CMD_GET_MPATH,
10178 .doit = nl80211_get_mpath,
10179 .dumpit = nl80211_dump_mpath,
10180 .policy = nl80211_policy,
10181 .flags = GENL_ADMIN_PERM,
10182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10183 NL80211_FLAG_NEED_RTNL,
10184 },
10185 {
10186 .cmd = NL80211_CMD_GET_MPP,
10187 .doit = nl80211_get_mpp,
10188 .dumpit = nl80211_dump_mpp,
10189 .policy = nl80211_policy,
10190 .flags = GENL_ADMIN_PERM,
10191 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10192 NL80211_FLAG_NEED_RTNL,
10193 },
10194 {
10195 .cmd = NL80211_CMD_SET_MPATH,
10196 .doit = nl80211_set_mpath,
10197 .policy = nl80211_policy,
10198 .flags = GENL_ADMIN_PERM,
10199 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10200 NL80211_FLAG_NEED_RTNL,
10201 },
10202 {
10203 .cmd = NL80211_CMD_NEW_MPATH,
10204 .doit = nl80211_new_mpath,
10205 .policy = nl80211_policy,
10206 .flags = GENL_ADMIN_PERM,
10207 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10208 NL80211_FLAG_NEED_RTNL,
10209 },
10210 {
10211 .cmd = NL80211_CMD_DEL_MPATH,
10212 .doit = nl80211_del_mpath,
10213 .policy = nl80211_policy,
10214 .flags = GENL_ADMIN_PERM,
10215 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10216 NL80211_FLAG_NEED_RTNL,
10217 },
10218 {
10219 .cmd = NL80211_CMD_SET_BSS,
10220 .doit = nl80211_set_bss,
10221 .policy = nl80211_policy,
10222 .flags = GENL_ADMIN_PERM,
10223 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10224 NL80211_FLAG_NEED_RTNL,
10225 },
10226 {
10227 .cmd = NL80211_CMD_GET_REG,
10228 .doit = nl80211_get_reg,
10229 .policy = nl80211_policy,
10230 .internal_flags = NL80211_FLAG_NEED_RTNL,
10231 /* can be retrieved by unprivileged users */
10232 },
10233 {
10234 .cmd = NL80211_CMD_SET_REG,
10235 .doit = nl80211_set_reg,
10236 .policy = nl80211_policy,
10237 .flags = GENL_ADMIN_PERM,
10238 .internal_flags = NL80211_FLAG_NEED_RTNL,
10239 },
10240 {
10241 .cmd = NL80211_CMD_REQ_SET_REG,
10242 .doit = nl80211_req_set_reg,
10243 .policy = nl80211_policy,
10244 .flags = GENL_ADMIN_PERM,
10245 },
10246 {
10247 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10248 .doit = nl80211_get_mesh_config,
10249 .policy = nl80211_policy,
10250 /* can be retrieved by unprivileged users */
10251 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10252 NL80211_FLAG_NEED_RTNL,
10253 },
10254 {
10255 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10256 .doit = nl80211_update_mesh_config,
10257 .policy = nl80211_policy,
10258 .flags = GENL_ADMIN_PERM,
10259 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10260 NL80211_FLAG_NEED_RTNL,
10261 },
10262 {
10263 .cmd = NL80211_CMD_TRIGGER_SCAN,
10264 .doit = nl80211_trigger_scan,
10265 .policy = nl80211_policy,
10266 .flags = GENL_ADMIN_PERM,
10267 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10268 NL80211_FLAG_NEED_RTNL,
10269 },
10270 {
10271 .cmd = NL80211_CMD_GET_SCAN,
10272 .policy = nl80211_policy,
10273 .dumpit = nl80211_dump_scan,
10274 },
10275 {
10276 .cmd = NL80211_CMD_START_SCHED_SCAN,
10277 .doit = nl80211_start_sched_scan,
10278 .policy = nl80211_policy,
10279 .flags = GENL_ADMIN_PERM,
10280 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10281 NL80211_FLAG_NEED_RTNL,
10282 },
10283 {
10284 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10285 .doit = nl80211_stop_sched_scan,
10286 .policy = nl80211_policy,
10287 .flags = GENL_ADMIN_PERM,
10288 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10289 NL80211_FLAG_NEED_RTNL,
10290 },
10291 {
10292 .cmd = NL80211_CMD_AUTHENTICATE,
10293 .doit = nl80211_authenticate,
10294 .policy = nl80211_policy,
10295 .flags = GENL_ADMIN_PERM,
10296 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10297 NL80211_FLAG_NEED_RTNL |
10298 NL80211_FLAG_CLEAR_SKB,
10299 },
10300 {
10301 .cmd = NL80211_CMD_ASSOCIATE,
10302 .doit = nl80211_associate,
10303 .policy = nl80211_policy,
10304 .flags = GENL_ADMIN_PERM,
10305 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10306 NL80211_FLAG_NEED_RTNL,
10307 },
10308 {
10309 .cmd = NL80211_CMD_DEAUTHENTICATE,
10310 .doit = nl80211_deauthenticate,
10311 .policy = nl80211_policy,
10312 .flags = GENL_ADMIN_PERM,
10313 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10314 NL80211_FLAG_NEED_RTNL,
10315 },
10316 {
10317 .cmd = NL80211_CMD_DISASSOCIATE,
10318 .doit = nl80211_disassociate,
10319 .policy = nl80211_policy,
10320 .flags = GENL_ADMIN_PERM,
10321 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10322 NL80211_FLAG_NEED_RTNL,
10323 },
10324 {
10325 .cmd = NL80211_CMD_JOIN_IBSS,
10326 .doit = nl80211_join_ibss,
10327 .policy = nl80211_policy,
10328 .flags = GENL_ADMIN_PERM,
10329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10330 NL80211_FLAG_NEED_RTNL,
10331 },
10332 {
10333 .cmd = NL80211_CMD_LEAVE_IBSS,
10334 .doit = nl80211_leave_ibss,
10335 .policy = nl80211_policy,
10336 .flags = GENL_ADMIN_PERM,
10337 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10338 NL80211_FLAG_NEED_RTNL,
10339 },
10340 #ifdef CONFIG_NL80211_TESTMODE
10341 {
10342 .cmd = NL80211_CMD_TESTMODE,
10343 .doit = nl80211_testmode_do,
10344 .dumpit = nl80211_testmode_dump,
10345 .policy = nl80211_policy,
10346 .flags = GENL_ADMIN_PERM,
10347 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10348 NL80211_FLAG_NEED_RTNL,
10349 },
10350 #endif
10351 {
10352 .cmd = NL80211_CMD_CONNECT,
10353 .doit = nl80211_connect,
10354 .policy = nl80211_policy,
10355 .flags = GENL_ADMIN_PERM,
10356 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10357 NL80211_FLAG_NEED_RTNL,
10358 },
10359 {
10360 .cmd = NL80211_CMD_DISCONNECT,
10361 .doit = nl80211_disconnect,
10362 .policy = nl80211_policy,
10363 .flags = GENL_ADMIN_PERM,
10364 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10365 NL80211_FLAG_NEED_RTNL,
10366 },
10367 {
10368 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10369 .doit = nl80211_wiphy_netns,
10370 .policy = nl80211_policy,
10371 .flags = GENL_ADMIN_PERM,
10372 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10373 NL80211_FLAG_NEED_RTNL,
10374 },
10375 {
10376 .cmd = NL80211_CMD_GET_SURVEY,
10377 .policy = nl80211_policy,
10378 .dumpit = nl80211_dump_survey,
10379 },
10380 {
10381 .cmd = NL80211_CMD_SET_PMKSA,
10382 .doit = nl80211_setdel_pmksa,
10383 .policy = nl80211_policy,
10384 .flags = GENL_ADMIN_PERM,
10385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10386 NL80211_FLAG_NEED_RTNL,
10387 },
10388 {
10389 .cmd = NL80211_CMD_DEL_PMKSA,
10390 .doit = nl80211_setdel_pmksa,
10391 .policy = nl80211_policy,
10392 .flags = GENL_ADMIN_PERM,
10393 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10394 NL80211_FLAG_NEED_RTNL,
10395 },
10396 {
10397 .cmd = NL80211_CMD_FLUSH_PMKSA,
10398 .doit = nl80211_flush_pmksa,
10399 .policy = nl80211_policy,
10400 .flags = GENL_ADMIN_PERM,
10401 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10402 NL80211_FLAG_NEED_RTNL,
10403 },
10404 {
10405 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10406 .doit = nl80211_remain_on_channel,
10407 .policy = nl80211_policy,
10408 .flags = GENL_ADMIN_PERM,
10409 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10410 NL80211_FLAG_NEED_RTNL,
10411 },
10412 {
10413 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10414 .doit = nl80211_cancel_remain_on_channel,
10415 .policy = nl80211_policy,
10416 .flags = GENL_ADMIN_PERM,
10417 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10418 NL80211_FLAG_NEED_RTNL,
10419 },
10420 {
10421 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10422 .doit = nl80211_set_tx_bitrate_mask,
10423 .policy = nl80211_policy,
10424 .flags = GENL_ADMIN_PERM,
10425 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10426 NL80211_FLAG_NEED_RTNL,
10427 },
10428 {
10429 .cmd = NL80211_CMD_REGISTER_FRAME,
10430 .doit = nl80211_register_mgmt,
10431 .policy = nl80211_policy,
10432 .flags = GENL_ADMIN_PERM,
10433 .internal_flags = NL80211_FLAG_NEED_WDEV |
10434 NL80211_FLAG_NEED_RTNL,
10435 },
10436 {
10437 .cmd = NL80211_CMD_FRAME,
10438 .doit = nl80211_tx_mgmt,
10439 .policy = nl80211_policy,
10440 .flags = GENL_ADMIN_PERM,
10441 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10442 NL80211_FLAG_NEED_RTNL,
10443 },
10444 {
10445 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10446 .doit = nl80211_tx_mgmt_cancel_wait,
10447 .policy = nl80211_policy,
10448 .flags = GENL_ADMIN_PERM,
10449 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10450 NL80211_FLAG_NEED_RTNL,
10451 },
10452 {
10453 .cmd = NL80211_CMD_SET_POWER_SAVE,
10454 .doit = nl80211_set_power_save,
10455 .policy = nl80211_policy,
10456 .flags = GENL_ADMIN_PERM,
10457 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10458 NL80211_FLAG_NEED_RTNL,
10459 },
10460 {
10461 .cmd = NL80211_CMD_GET_POWER_SAVE,
10462 .doit = nl80211_get_power_save,
10463 .policy = nl80211_policy,
10464 /* can be retrieved by unprivileged users */
10465 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10466 NL80211_FLAG_NEED_RTNL,
10467 },
10468 {
10469 .cmd = NL80211_CMD_SET_CQM,
10470 .doit = nl80211_set_cqm,
10471 .policy = nl80211_policy,
10472 .flags = GENL_ADMIN_PERM,
10473 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10474 NL80211_FLAG_NEED_RTNL,
10475 },
10476 {
10477 .cmd = NL80211_CMD_SET_CHANNEL,
10478 .doit = nl80211_set_channel,
10479 .policy = nl80211_policy,
10480 .flags = GENL_ADMIN_PERM,
10481 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10482 NL80211_FLAG_NEED_RTNL,
10483 },
10484 {
10485 .cmd = NL80211_CMD_SET_WDS_PEER,
10486 .doit = nl80211_set_wds_peer,
10487 .policy = nl80211_policy,
10488 .flags = GENL_ADMIN_PERM,
10489 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10490 NL80211_FLAG_NEED_RTNL,
10491 },
10492 {
10493 .cmd = NL80211_CMD_JOIN_MESH,
10494 .doit = nl80211_join_mesh,
10495 .policy = nl80211_policy,
10496 .flags = GENL_ADMIN_PERM,
10497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10498 NL80211_FLAG_NEED_RTNL,
10499 },
10500 {
10501 .cmd = NL80211_CMD_LEAVE_MESH,
10502 .doit = nl80211_leave_mesh,
10503 .policy = nl80211_policy,
10504 .flags = GENL_ADMIN_PERM,
10505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10506 NL80211_FLAG_NEED_RTNL,
10507 },
10508 {
10509 .cmd = NL80211_CMD_JOIN_OCB,
10510 .doit = nl80211_join_ocb,
10511 .policy = nl80211_policy,
10512 .flags = GENL_ADMIN_PERM,
10513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10514 NL80211_FLAG_NEED_RTNL,
10515 },
10516 {
10517 .cmd = NL80211_CMD_LEAVE_OCB,
10518 .doit = nl80211_leave_ocb,
10519 .policy = nl80211_policy,
10520 .flags = GENL_ADMIN_PERM,
10521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10522 NL80211_FLAG_NEED_RTNL,
10523 },
10524 #ifdef CONFIG_PM
10525 {
10526 .cmd = NL80211_CMD_GET_WOWLAN,
10527 .doit = nl80211_get_wowlan,
10528 .policy = nl80211_policy,
10529 /* can be retrieved by unprivileged users */
10530 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10531 NL80211_FLAG_NEED_RTNL,
10532 },
10533 {
10534 .cmd = NL80211_CMD_SET_WOWLAN,
10535 .doit = nl80211_set_wowlan,
10536 .policy = nl80211_policy,
10537 .flags = GENL_ADMIN_PERM,
10538 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10539 NL80211_FLAG_NEED_RTNL,
10540 },
10541 #endif
10542 {
10543 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10544 .doit = nl80211_set_rekey_data,
10545 .policy = nl80211_policy,
10546 .flags = GENL_ADMIN_PERM,
10547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10548 NL80211_FLAG_NEED_RTNL |
10549 NL80211_FLAG_CLEAR_SKB,
10550 },
10551 {
10552 .cmd = NL80211_CMD_TDLS_MGMT,
10553 .doit = nl80211_tdls_mgmt,
10554 .policy = nl80211_policy,
10555 .flags = GENL_ADMIN_PERM,
10556 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10557 NL80211_FLAG_NEED_RTNL,
10558 },
10559 {
10560 .cmd = NL80211_CMD_TDLS_OPER,
10561 .doit = nl80211_tdls_oper,
10562 .policy = nl80211_policy,
10563 .flags = GENL_ADMIN_PERM,
10564 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10565 NL80211_FLAG_NEED_RTNL,
10566 },
10567 {
10568 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10569 .doit = nl80211_register_unexpected_frame,
10570 .policy = nl80211_policy,
10571 .flags = GENL_ADMIN_PERM,
10572 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10573 NL80211_FLAG_NEED_RTNL,
10574 },
10575 {
10576 .cmd = NL80211_CMD_PROBE_CLIENT,
10577 .doit = nl80211_probe_client,
10578 .policy = nl80211_policy,
10579 .flags = GENL_ADMIN_PERM,
10580 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10581 NL80211_FLAG_NEED_RTNL,
10582 },
10583 {
10584 .cmd = NL80211_CMD_REGISTER_BEACONS,
10585 .doit = nl80211_register_beacons,
10586 .policy = nl80211_policy,
10587 .flags = GENL_ADMIN_PERM,
10588 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10589 NL80211_FLAG_NEED_RTNL,
10590 },
10591 {
10592 .cmd = NL80211_CMD_SET_NOACK_MAP,
10593 .doit = nl80211_set_noack_map,
10594 .policy = nl80211_policy,
10595 .flags = GENL_ADMIN_PERM,
10596 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10597 NL80211_FLAG_NEED_RTNL,
10598 },
10599 {
10600 .cmd = NL80211_CMD_START_P2P_DEVICE,
10601 .doit = nl80211_start_p2p_device,
10602 .policy = nl80211_policy,
10603 .flags = GENL_ADMIN_PERM,
10604 .internal_flags = NL80211_FLAG_NEED_WDEV |
10605 NL80211_FLAG_NEED_RTNL,
10606 },
10607 {
10608 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10609 .doit = nl80211_stop_p2p_device,
10610 .policy = nl80211_policy,
10611 .flags = GENL_ADMIN_PERM,
10612 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10613 NL80211_FLAG_NEED_RTNL,
10614 },
10615 {
10616 .cmd = NL80211_CMD_SET_MCAST_RATE,
10617 .doit = nl80211_set_mcast_rate,
10618 .policy = nl80211_policy,
10619 .flags = GENL_ADMIN_PERM,
10620 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10621 NL80211_FLAG_NEED_RTNL,
10622 },
10623 {
10624 .cmd = NL80211_CMD_SET_MAC_ACL,
10625 .doit = nl80211_set_mac_acl,
10626 .policy = nl80211_policy,
10627 .flags = GENL_ADMIN_PERM,
10628 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10629 NL80211_FLAG_NEED_RTNL,
10630 },
10631 {
10632 .cmd = NL80211_CMD_RADAR_DETECT,
10633 .doit = nl80211_start_radar_detection,
10634 .policy = nl80211_policy,
10635 .flags = GENL_ADMIN_PERM,
10636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10637 NL80211_FLAG_NEED_RTNL,
10638 },
10639 {
10640 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10641 .doit = nl80211_get_protocol_features,
10642 .policy = nl80211_policy,
10643 },
10644 {
10645 .cmd = NL80211_CMD_UPDATE_FT_IES,
10646 .doit = nl80211_update_ft_ies,
10647 .policy = nl80211_policy,
10648 .flags = GENL_ADMIN_PERM,
10649 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10650 NL80211_FLAG_NEED_RTNL,
10651 },
10652 {
10653 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10654 .doit = nl80211_crit_protocol_start,
10655 .policy = nl80211_policy,
10656 .flags = GENL_ADMIN_PERM,
10657 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10658 NL80211_FLAG_NEED_RTNL,
10659 },
10660 {
10661 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10662 .doit = nl80211_crit_protocol_stop,
10663 .policy = nl80211_policy,
10664 .flags = GENL_ADMIN_PERM,
10665 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10666 NL80211_FLAG_NEED_RTNL,
10667 },
10668 {
10669 .cmd = NL80211_CMD_GET_COALESCE,
10670 .doit = nl80211_get_coalesce,
10671 .policy = nl80211_policy,
10672 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10673 NL80211_FLAG_NEED_RTNL,
10674 },
10675 {
10676 .cmd = NL80211_CMD_SET_COALESCE,
10677 .doit = nl80211_set_coalesce,
10678 .policy = nl80211_policy,
10679 .flags = GENL_ADMIN_PERM,
10680 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10681 NL80211_FLAG_NEED_RTNL,
10682 },
10683 {
10684 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10685 .doit = nl80211_channel_switch,
10686 .policy = nl80211_policy,
10687 .flags = GENL_ADMIN_PERM,
10688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10689 NL80211_FLAG_NEED_RTNL,
10690 },
10691 {
10692 .cmd = NL80211_CMD_VENDOR,
10693 .doit = nl80211_vendor_cmd,
10694 .policy = nl80211_policy,
10695 .flags = GENL_ADMIN_PERM,
10696 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10697 NL80211_FLAG_NEED_RTNL,
10698 },
10699 {
10700 .cmd = NL80211_CMD_SET_QOS_MAP,
10701 .doit = nl80211_set_qos_map,
10702 .policy = nl80211_policy,
10703 .flags = GENL_ADMIN_PERM,
10704 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10705 NL80211_FLAG_NEED_RTNL,
10706 },
10707 {
10708 .cmd = NL80211_CMD_ADD_TX_TS,
10709 .doit = nl80211_add_tx_ts,
10710 .policy = nl80211_policy,
10711 .flags = GENL_ADMIN_PERM,
10712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10713 NL80211_FLAG_NEED_RTNL,
10714 },
10715 {
10716 .cmd = NL80211_CMD_DEL_TX_TS,
10717 .doit = nl80211_del_tx_ts,
10718 .policy = nl80211_policy,
10719 .flags = GENL_ADMIN_PERM,
10720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10721 NL80211_FLAG_NEED_RTNL,
10722 },
10723 {
10724 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10725 .doit = nl80211_tdls_channel_switch,
10726 .policy = nl80211_policy,
10727 .flags = GENL_ADMIN_PERM,
10728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10729 NL80211_FLAG_NEED_RTNL,
10730 },
10731 {
10732 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10733 .doit = nl80211_tdls_cancel_channel_switch,
10734 .policy = nl80211_policy,
10735 .flags = GENL_ADMIN_PERM,
10736 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10737 NL80211_FLAG_NEED_RTNL,
10738 },
10739 };
10740
10741 /* notification functions */
10742
10743 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10744 enum nl80211_commands cmd)
10745 {
10746 struct sk_buff *msg;
10747 struct nl80211_dump_wiphy_state state = {};
10748
10749 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10750 cmd != NL80211_CMD_DEL_WIPHY);
10751
10752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10753 if (!msg)
10754 return;
10755
10756 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10757 nlmsg_free(msg);
10758 return;
10759 }
10760
10761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10762 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10763 }
10764
10765 static int nl80211_add_scan_req(struct sk_buff *msg,
10766 struct cfg80211_registered_device *rdev)
10767 {
10768 struct cfg80211_scan_request *req = rdev->scan_req;
10769 struct nlattr *nest;
10770 int i;
10771
10772 if (WARN_ON(!req))
10773 return 0;
10774
10775 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10776 if (!nest)
10777 goto nla_put_failure;
10778 for (i = 0; i < req->n_ssids; i++) {
10779 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10780 goto nla_put_failure;
10781 }
10782 nla_nest_end(msg, nest);
10783
10784 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10785 if (!nest)
10786 goto nla_put_failure;
10787 for (i = 0; i < req->n_channels; i++) {
10788 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10789 goto nla_put_failure;
10790 }
10791 nla_nest_end(msg, nest);
10792
10793 if (req->ie &&
10794 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10795 goto nla_put_failure;
10796
10797 if (req->flags &&
10798 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10799 goto nla_put_failure;
10800
10801 return 0;
10802 nla_put_failure:
10803 return -ENOBUFS;
10804 }
10805
10806 static int nl80211_send_scan_msg(struct sk_buff *msg,
10807 struct cfg80211_registered_device *rdev,
10808 struct wireless_dev *wdev,
10809 u32 portid, u32 seq, int flags,
10810 u32 cmd)
10811 {
10812 void *hdr;
10813
10814 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10815 if (!hdr)
10816 return -1;
10817
10818 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10819 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10820 wdev->netdev->ifindex)) ||
10821 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10822 goto nla_put_failure;
10823
10824 /* ignore errors and send incomplete event anyway */
10825 nl80211_add_scan_req(msg, rdev);
10826
10827 return genlmsg_end(msg, hdr);
10828
10829 nla_put_failure:
10830 genlmsg_cancel(msg, hdr);
10831 return -EMSGSIZE;
10832 }
10833
10834 static int
10835 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10836 struct cfg80211_registered_device *rdev,
10837 struct net_device *netdev,
10838 u32 portid, u32 seq, int flags, u32 cmd)
10839 {
10840 void *hdr;
10841
10842 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10843 if (!hdr)
10844 return -1;
10845
10846 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10847 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10848 goto nla_put_failure;
10849
10850 return genlmsg_end(msg, hdr);
10851
10852 nla_put_failure:
10853 genlmsg_cancel(msg, hdr);
10854 return -EMSGSIZE;
10855 }
10856
10857 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10858 struct wireless_dev *wdev)
10859 {
10860 struct sk_buff *msg;
10861
10862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10863 if (!msg)
10864 return;
10865
10866 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10867 NL80211_CMD_TRIGGER_SCAN) < 0) {
10868 nlmsg_free(msg);
10869 return;
10870 }
10871
10872 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10873 NL80211_MCGRP_SCAN, GFP_KERNEL);
10874 }
10875
10876 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10877 struct wireless_dev *wdev, bool aborted)
10878 {
10879 struct sk_buff *msg;
10880
10881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10882 if (!msg)
10883 return NULL;
10884
10885 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10886 aborted ? NL80211_CMD_SCAN_ABORTED :
10887 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10888 nlmsg_free(msg);
10889 return NULL;
10890 }
10891
10892 return msg;
10893 }
10894
10895 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10896 struct sk_buff *msg)
10897 {
10898 if (!msg)
10899 return;
10900
10901 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10902 NL80211_MCGRP_SCAN, GFP_KERNEL);
10903 }
10904
10905 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10906 struct net_device *netdev)
10907 {
10908 struct sk_buff *msg;
10909
10910 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10911 if (!msg)
10912 return;
10913
10914 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10915 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10916 nlmsg_free(msg);
10917 return;
10918 }
10919
10920 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10921 NL80211_MCGRP_SCAN, GFP_KERNEL);
10922 }
10923
10924 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10925 struct net_device *netdev, u32 cmd)
10926 {
10927 struct sk_buff *msg;
10928
10929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10930 if (!msg)
10931 return;
10932
10933 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10934 nlmsg_free(msg);
10935 return;
10936 }
10937
10938 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10939 NL80211_MCGRP_SCAN, GFP_KERNEL);
10940 }
10941
10942 /*
10943 * This can happen on global regulatory changes or device specific settings
10944 * based on custom world regulatory domains.
10945 */
10946 void nl80211_send_reg_change_event(struct regulatory_request *request)
10947 {
10948 struct sk_buff *msg;
10949 void *hdr;
10950
10951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10952 if (!msg)
10953 return;
10954
10955 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10956 if (!hdr) {
10957 nlmsg_free(msg);
10958 return;
10959 }
10960
10961 /* Userspace can always count this one always being set */
10962 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10963 goto nla_put_failure;
10964
10965 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10966 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10967 NL80211_REGDOM_TYPE_WORLD))
10968 goto nla_put_failure;
10969 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10970 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10971 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10972 goto nla_put_failure;
10973 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10974 request->intersect) {
10975 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10976 NL80211_REGDOM_TYPE_INTERSECTION))
10977 goto nla_put_failure;
10978 } else {
10979 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10980 NL80211_REGDOM_TYPE_COUNTRY) ||
10981 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10982 request->alpha2))
10983 goto nla_put_failure;
10984 }
10985
10986 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10987 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10988 goto nla_put_failure;
10989
10990 genlmsg_end(msg, hdr);
10991
10992 rcu_read_lock();
10993 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10994 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10995 rcu_read_unlock();
10996
10997 return;
10998
10999 nla_put_failure:
11000 genlmsg_cancel(msg, hdr);
11001 nlmsg_free(msg);
11002 }
11003
11004 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11005 struct net_device *netdev,
11006 const u8 *buf, size_t len,
11007 enum nl80211_commands cmd, gfp_t gfp,
11008 int uapsd_queues)
11009 {
11010 struct sk_buff *msg;
11011 void *hdr;
11012
11013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11014 if (!msg)
11015 return;
11016
11017 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11018 if (!hdr) {
11019 nlmsg_free(msg);
11020 return;
11021 }
11022
11023 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11024 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11025 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11026 goto nla_put_failure;
11027
11028 if (uapsd_queues >= 0) {
11029 struct nlattr *nla_wmm =
11030 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11031 if (!nla_wmm)
11032 goto nla_put_failure;
11033
11034 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11035 uapsd_queues))
11036 goto nla_put_failure;
11037
11038 nla_nest_end(msg, nla_wmm);
11039 }
11040
11041 genlmsg_end(msg, hdr);
11042
11043 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11044 NL80211_MCGRP_MLME, gfp);
11045 return;
11046
11047 nla_put_failure:
11048 genlmsg_cancel(msg, hdr);
11049 nlmsg_free(msg);
11050 }
11051
11052 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11053 struct net_device *netdev, const u8 *buf,
11054 size_t len, gfp_t gfp)
11055 {
11056 nl80211_send_mlme_event(rdev, netdev, buf, len,
11057 NL80211_CMD_AUTHENTICATE, gfp, -1);
11058 }
11059
11060 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11061 struct net_device *netdev, const u8 *buf,
11062 size_t len, gfp_t gfp, int uapsd_queues)
11063 {
11064 nl80211_send_mlme_event(rdev, netdev, buf, len,
11065 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11066 }
11067
11068 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11069 struct net_device *netdev, const u8 *buf,
11070 size_t len, gfp_t gfp)
11071 {
11072 nl80211_send_mlme_event(rdev, netdev, buf, len,
11073 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11074 }
11075
11076 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11077 struct net_device *netdev, const u8 *buf,
11078 size_t len, gfp_t gfp)
11079 {
11080 nl80211_send_mlme_event(rdev, netdev, buf, len,
11081 NL80211_CMD_DISASSOCIATE, gfp, -1);
11082 }
11083
11084 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11085 size_t len)
11086 {
11087 struct wireless_dev *wdev = dev->ieee80211_ptr;
11088 struct wiphy *wiphy = wdev->wiphy;
11089 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11090 const struct ieee80211_mgmt *mgmt = (void *)buf;
11091 u32 cmd;
11092
11093 if (WARN_ON(len < 2))
11094 return;
11095
11096 if (ieee80211_is_deauth(mgmt->frame_control))
11097 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11098 else
11099 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11100
11101 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11102 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11103 }
11104 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11105
11106 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11107 struct net_device *netdev, int cmd,
11108 const u8 *addr, gfp_t gfp)
11109 {
11110 struct sk_buff *msg;
11111 void *hdr;
11112
11113 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11114 if (!msg)
11115 return;
11116
11117 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11118 if (!hdr) {
11119 nlmsg_free(msg);
11120 return;
11121 }
11122
11123 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11124 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11125 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11126 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11127 goto nla_put_failure;
11128
11129 genlmsg_end(msg, hdr);
11130
11131 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11132 NL80211_MCGRP_MLME, gfp);
11133 return;
11134
11135 nla_put_failure:
11136 genlmsg_cancel(msg, hdr);
11137 nlmsg_free(msg);
11138 }
11139
11140 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11141 struct net_device *netdev, const u8 *addr,
11142 gfp_t gfp)
11143 {
11144 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11145 addr, gfp);
11146 }
11147
11148 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11149 struct net_device *netdev, const u8 *addr,
11150 gfp_t gfp)
11151 {
11152 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11153 addr, gfp);
11154 }
11155
11156 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11157 struct net_device *netdev, const u8 *bssid,
11158 const u8 *req_ie, size_t req_ie_len,
11159 const u8 *resp_ie, size_t resp_ie_len,
11160 u16 status, gfp_t gfp)
11161 {
11162 struct sk_buff *msg;
11163 void *hdr;
11164
11165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11166 if (!msg)
11167 return;
11168
11169 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11170 if (!hdr) {
11171 nlmsg_free(msg);
11172 return;
11173 }
11174
11175 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11176 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11177 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11178 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11179 (req_ie &&
11180 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11181 (resp_ie &&
11182 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11183 goto nla_put_failure;
11184
11185 genlmsg_end(msg, hdr);
11186
11187 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11188 NL80211_MCGRP_MLME, gfp);
11189 return;
11190
11191 nla_put_failure:
11192 genlmsg_cancel(msg, hdr);
11193 nlmsg_free(msg);
11194
11195 }
11196
11197 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11198 struct net_device *netdev, const u8 *bssid,
11199 const u8 *req_ie, size_t req_ie_len,
11200 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11201 {
11202 struct sk_buff *msg;
11203 void *hdr;
11204
11205 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11206 if (!msg)
11207 return;
11208
11209 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11210 if (!hdr) {
11211 nlmsg_free(msg);
11212 return;
11213 }
11214
11215 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11216 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11217 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11218 (req_ie &&
11219 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11220 (resp_ie &&
11221 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11222 goto nla_put_failure;
11223
11224 genlmsg_end(msg, hdr);
11225
11226 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11227 NL80211_MCGRP_MLME, gfp);
11228 return;
11229
11230 nla_put_failure:
11231 genlmsg_cancel(msg, hdr);
11232 nlmsg_free(msg);
11233
11234 }
11235
11236 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11237 struct net_device *netdev, u16 reason,
11238 const u8 *ie, size_t ie_len, bool from_ap)
11239 {
11240 struct sk_buff *msg;
11241 void *hdr;
11242
11243 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11244 if (!msg)
11245 return;
11246
11247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11248 if (!hdr) {
11249 nlmsg_free(msg);
11250 return;
11251 }
11252
11253 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11254 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11255 (from_ap && reason &&
11256 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11257 (from_ap &&
11258 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11259 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11260 goto nla_put_failure;
11261
11262 genlmsg_end(msg, hdr);
11263
11264 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11265 NL80211_MCGRP_MLME, GFP_KERNEL);
11266 return;
11267
11268 nla_put_failure:
11269 genlmsg_cancel(msg, hdr);
11270 nlmsg_free(msg);
11271
11272 }
11273
11274 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11275 struct net_device *netdev, const u8 *bssid,
11276 gfp_t gfp)
11277 {
11278 struct sk_buff *msg;
11279 void *hdr;
11280
11281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11282 if (!msg)
11283 return;
11284
11285 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11286 if (!hdr) {
11287 nlmsg_free(msg);
11288 return;
11289 }
11290
11291 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11292 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11293 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11294 goto nla_put_failure;
11295
11296 genlmsg_end(msg, hdr);
11297
11298 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11299 NL80211_MCGRP_MLME, gfp);
11300 return;
11301
11302 nla_put_failure:
11303 genlmsg_cancel(msg, hdr);
11304 nlmsg_free(msg);
11305 }
11306
11307 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11308 const u8* ie, u8 ie_len, gfp_t gfp)
11309 {
11310 struct wireless_dev *wdev = dev->ieee80211_ptr;
11311 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11312 struct sk_buff *msg;
11313 void *hdr;
11314
11315 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11316 return;
11317
11318 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11319
11320 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11321 if (!msg)
11322 return;
11323
11324 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11325 if (!hdr) {
11326 nlmsg_free(msg);
11327 return;
11328 }
11329
11330 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11331 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11332 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11333 (ie_len && ie &&
11334 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11335 goto nla_put_failure;
11336
11337 genlmsg_end(msg, hdr);
11338
11339 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11340 NL80211_MCGRP_MLME, gfp);
11341 return;
11342
11343 nla_put_failure:
11344 genlmsg_cancel(msg, hdr);
11345 nlmsg_free(msg);
11346 }
11347 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11348
11349 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11350 struct net_device *netdev, const u8 *addr,
11351 enum nl80211_key_type key_type, int key_id,
11352 const u8 *tsc, gfp_t gfp)
11353 {
11354 struct sk_buff *msg;
11355 void *hdr;
11356
11357 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11358 if (!msg)
11359 return;
11360
11361 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11362 if (!hdr) {
11363 nlmsg_free(msg);
11364 return;
11365 }
11366
11367 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11368 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11369 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11370 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11371 (key_id != -1 &&
11372 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11373 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11374 goto nla_put_failure;
11375
11376 genlmsg_end(msg, hdr);
11377
11378 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11379 NL80211_MCGRP_MLME, gfp);
11380 return;
11381
11382 nla_put_failure:
11383 genlmsg_cancel(msg, hdr);
11384 nlmsg_free(msg);
11385 }
11386
11387 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11388 struct ieee80211_channel *channel_before,
11389 struct ieee80211_channel *channel_after)
11390 {
11391 struct sk_buff *msg;
11392 void *hdr;
11393 struct nlattr *nl_freq;
11394
11395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11396 if (!msg)
11397 return;
11398
11399 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11400 if (!hdr) {
11401 nlmsg_free(msg);
11402 return;
11403 }
11404
11405 /*
11406 * Since we are applying the beacon hint to a wiphy we know its
11407 * wiphy_idx is valid
11408 */
11409 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11410 goto nla_put_failure;
11411
11412 /* Before */
11413 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11414 if (!nl_freq)
11415 goto nla_put_failure;
11416 if (nl80211_msg_put_channel(msg, channel_before, false))
11417 goto nla_put_failure;
11418 nla_nest_end(msg, nl_freq);
11419
11420 /* After */
11421 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11422 if (!nl_freq)
11423 goto nla_put_failure;
11424 if (nl80211_msg_put_channel(msg, channel_after, false))
11425 goto nla_put_failure;
11426 nla_nest_end(msg, nl_freq);
11427
11428 genlmsg_end(msg, hdr);
11429
11430 rcu_read_lock();
11431 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11432 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11433 rcu_read_unlock();
11434
11435 return;
11436
11437 nla_put_failure:
11438 genlmsg_cancel(msg, hdr);
11439 nlmsg_free(msg);
11440 }
11441
11442 static void nl80211_send_remain_on_chan_event(
11443 int cmd, struct cfg80211_registered_device *rdev,
11444 struct wireless_dev *wdev, u64 cookie,
11445 struct ieee80211_channel *chan,
11446 unsigned int duration, gfp_t gfp)
11447 {
11448 struct sk_buff *msg;
11449 void *hdr;
11450
11451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11452 if (!msg)
11453 return;
11454
11455 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11456 if (!hdr) {
11457 nlmsg_free(msg);
11458 return;
11459 }
11460
11461 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11462 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11463 wdev->netdev->ifindex)) ||
11464 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11465 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11466 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11467 NL80211_CHAN_NO_HT) ||
11468 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11469 goto nla_put_failure;
11470
11471 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11472 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11473 goto nla_put_failure;
11474
11475 genlmsg_end(msg, hdr);
11476
11477 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11478 NL80211_MCGRP_MLME, gfp);
11479 return;
11480
11481 nla_put_failure:
11482 genlmsg_cancel(msg, hdr);
11483 nlmsg_free(msg);
11484 }
11485
11486 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11487 struct ieee80211_channel *chan,
11488 unsigned int duration, gfp_t gfp)
11489 {
11490 struct wiphy *wiphy = wdev->wiphy;
11491 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11492
11493 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11494 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11495 rdev, wdev, cookie, chan,
11496 duration, gfp);
11497 }
11498 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11499
11500 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11501 struct ieee80211_channel *chan,
11502 gfp_t gfp)
11503 {
11504 struct wiphy *wiphy = wdev->wiphy;
11505 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11506
11507 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11508 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11509 rdev, wdev, cookie, chan, 0, gfp);
11510 }
11511 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11512
11513 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11514 struct station_info *sinfo, gfp_t gfp)
11515 {
11516 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11518 struct sk_buff *msg;
11519
11520 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11521
11522 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11523 if (!msg)
11524 return;
11525
11526 if (nl80211_send_station(msg, 0, 0, 0,
11527 rdev, dev, mac_addr, sinfo) < 0) {
11528 nlmsg_free(msg);
11529 return;
11530 }
11531
11532 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11533 NL80211_MCGRP_MLME, gfp);
11534 }
11535 EXPORT_SYMBOL(cfg80211_new_sta);
11536
11537 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11538 {
11539 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11540 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11541 struct sk_buff *msg;
11542 void *hdr;
11543
11544 trace_cfg80211_del_sta(dev, mac_addr);
11545
11546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11547 if (!msg)
11548 return;
11549
11550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11551 if (!hdr) {
11552 nlmsg_free(msg);
11553 return;
11554 }
11555
11556 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11557 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11558 goto nla_put_failure;
11559
11560 genlmsg_end(msg, hdr);
11561
11562 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11563 NL80211_MCGRP_MLME, gfp);
11564 return;
11565
11566 nla_put_failure:
11567 genlmsg_cancel(msg, hdr);
11568 nlmsg_free(msg);
11569 }
11570 EXPORT_SYMBOL(cfg80211_del_sta);
11571
11572 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11573 enum nl80211_connect_failed_reason reason,
11574 gfp_t gfp)
11575 {
11576 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11577 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11578 struct sk_buff *msg;
11579 void *hdr;
11580
11581 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11582 if (!msg)
11583 return;
11584
11585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11586 if (!hdr) {
11587 nlmsg_free(msg);
11588 return;
11589 }
11590
11591 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11592 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11593 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11594 goto nla_put_failure;
11595
11596 genlmsg_end(msg, hdr);
11597
11598 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11599 NL80211_MCGRP_MLME, gfp);
11600 return;
11601
11602 nla_put_failure:
11603 genlmsg_cancel(msg, hdr);
11604 nlmsg_free(msg);
11605 }
11606 EXPORT_SYMBOL(cfg80211_conn_failed);
11607
11608 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11609 const u8 *addr, gfp_t gfp)
11610 {
11611 struct wireless_dev *wdev = dev->ieee80211_ptr;
11612 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11613 struct sk_buff *msg;
11614 void *hdr;
11615 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11616
11617 if (!nlportid)
11618 return false;
11619
11620 msg = nlmsg_new(100, gfp);
11621 if (!msg)
11622 return true;
11623
11624 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11625 if (!hdr) {
11626 nlmsg_free(msg);
11627 return true;
11628 }
11629
11630 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11631 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11632 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11633 goto nla_put_failure;
11634
11635 genlmsg_end(msg, hdr);
11636 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11637 return true;
11638
11639 nla_put_failure:
11640 genlmsg_cancel(msg, hdr);
11641 nlmsg_free(msg);
11642 return true;
11643 }
11644
11645 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11646 const u8 *addr, gfp_t gfp)
11647 {
11648 struct wireless_dev *wdev = dev->ieee80211_ptr;
11649 bool ret;
11650
11651 trace_cfg80211_rx_spurious_frame(dev, addr);
11652
11653 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11654 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11655 trace_cfg80211_return_bool(false);
11656 return false;
11657 }
11658 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11659 addr, gfp);
11660 trace_cfg80211_return_bool(ret);
11661 return ret;
11662 }
11663 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11664
11665 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11666 const u8 *addr, gfp_t gfp)
11667 {
11668 struct wireless_dev *wdev = dev->ieee80211_ptr;
11669 bool ret;
11670
11671 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11672
11673 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11674 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11675 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11676 trace_cfg80211_return_bool(false);
11677 return false;
11678 }
11679 ret = __nl80211_unexpected_frame(dev,
11680 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11681 addr, gfp);
11682 trace_cfg80211_return_bool(ret);
11683 return ret;
11684 }
11685 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11686
11687 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11688 struct wireless_dev *wdev, u32 nlportid,
11689 int freq, int sig_dbm,
11690 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11691 {
11692 struct net_device *netdev = wdev->netdev;
11693 struct sk_buff *msg;
11694 void *hdr;
11695
11696 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11697 if (!msg)
11698 return -ENOMEM;
11699
11700 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11701 if (!hdr) {
11702 nlmsg_free(msg);
11703 return -ENOMEM;
11704 }
11705
11706 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11707 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11708 netdev->ifindex)) ||
11709 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11710 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11711 (sig_dbm &&
11712 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11713 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11714 (flags &&
11715 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11716 goto nla_put_failure;
11717
11718 genlmsg_end(msg, hdr);
11719
11720 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11721
11722 nla_put_failure:
11723 genlmsg_cancel(msg, hdr);
11724 nlmsg_free(msg);
11725 return -ENOBUFS;
11726 }
11727
11728 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11729 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11730 {
11731 struct wiphy *wiphy = wdev->wiphy;
11732 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11733 struct net_device *netdev = wdev->netdev;
11734 struct sk_buff *msg;
11735 void *hdr;
11736
11737 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11738
11739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11740 if (!msg)
11741 return;
11742
11743 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11744 if (!hdr) {
11745 nlmsg_free(msg);
11746 return;
11747 }
11748
11749 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11750 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11751 netdev->ifindex)) ||
11752 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11753 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11754 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11755 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11756 goto nla_put_failure;
11757
11758 genlmsg_end(msg, hdr);
11759
11760 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11761 NL80211_MCGRP_MLME, gfp);
11762 return;
11763
11764 nla_put_failure:
11765 genlmsg_cancel(msg, hdr);
11766 nlmsg_free(msg);
11767 }
11768 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11769
11770 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11771 const char *mac, gfp_t gfp)
11772 {
11773 struct wireless_dev *wdev = dev->ieee80211_ptr;
11774 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11775 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11776 void **cb;
11777
11778 if (!msg)
11779 return NULL;
11780
11781 cb = (void **)msg->cb;
11782
11783 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11784 if (!cb[0]) {
11785 nlmsg_free(msg);
11786 return NULL;
11787 }
11788
11789 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11790 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11791 goto nla_put_failure;
11792
11793 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11794 goto nla_put_failure;
11795
11796 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11797 if (!cb[1])
11798 goto nla_put_failure;
11799
11800 cb[2] = rdev;
11801
11802 return msg;
11803 nla_put_failure:
11804 nlmsg_free(msg);
11805 return NULL;
11806 }
11807
11808 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11809 {
11810 void **cb = (void **)msg->cb;
11811 struct cfg80211_registered_device *rdev = cb[2];
11812
11813 nla_nest_end(msg, cb[1]);
11814 genlmsg_end(msg, cb[0]);
11815
11816 memset(msg->cb, 0, sizeof(msg->cb));
11817
11818 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11819 NL80211_MCGRP_MLME, gfp);
11820 }
11821
11822 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11823 enum nl80211_cqm_rssi_threshold_event rssi_event,
11824 gfp_t gfp)
11825 {
11826 struct sk_buff *msg;
11827
11828 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11829
11830 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11831 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11832 return;
11833
11834 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11835 if (!msg)
11836 return;
11837
11838 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11839 rssi_event))
11840 goto nla_put_failure;
11841
11842 cfg80211_send_cqm(msg, gfp);
11843
11844 return;
11845
11846 nla_put_failure:
11847 nlmsg_free(msg);
11848 }
11849 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11850
11851 void cfg80211_cqm_txe_notify(struct net_device *dev,
11852 const u8 *peer, u32 num_packets,
11853 u32 rate, u32 intvl, gfp_t gfp)
11854 {
11855 struct sk_buff *msg;
11856
11857 msg = cfg80211_prepare_cqm(dev, peer, gfp);
11858 if (!msg)
11859 return;
11860
11861 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11862 goto nla_put_failure;
11863
11864 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11865 goto nla_put_failure;
11866
11867 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11868 goto nla_put_failure;
11869
11870 cfg80211_send_cqm(msg, gfp);
11871 return;
11872
11873 nla_put_failure:
11874 nlmsg_free(msg);
11875 }
11876 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11877
11878 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11879 const u8 *peer, u32 num_packets, gfp_t gfp)
11880 {
11881 struct sk_buff *msg;
11882
11883 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11884
11885 msg = cfg80211_prepare_cqm(dev, peer, gfp);
11886 if (!msg)
11887 return;
11888
11889 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11890 goto nla_put_failure;
11891
11892 cfg80211_send_cqm(msg, gfp);
11893 return;
11894
11895 nla_put_failure:
11896 nlmsg_free(msg);
11897 }
11898 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11899
11900 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
11901 {
11902 struct sk_buff *msg;
11903
11904 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11905 if (!msg)
11906 return;
11907
11908 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
11909 goto nla_put_failure;
11910
11911 cfg80211_send_cqm(msg, gfp);
11912 return;
11913
11914 nla_put_failure:
11915 nlmsg_free(msg);
11916 }
11917 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
11918
11919 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11920 struct net_device *netdev, const u8 *bssid,
11921 const u8 *replay_ctr, gfp_t gfp)
11922 {
11923 struct sk_buff *msg;
11924 struct nlattr *rekey_attr;
11925 void *hdr;
11926
11927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11928 if (!msg)
11929 return;
11930
11931 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11932 if (!hdr) {
11933 nlmsg_free(msg);
11934 return;
11935 }
11936
11937 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11938 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11939 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11940 goto nla_put_failure;
11941
11942 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11943 if (!rekey_attr)
11944 goto nla_put_failure;
11945
11946 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11947 NL80211_REPLAY_CTR_LEN, replay_ctr))
11948 goto nla_put_failure;
11949
11950 nla_nest_end(msg, rekey_attr);
11951
11952 genlmsg_end(msg, hdr);
11953
11954 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11955 NL80211_MCGRP_MLME, gfp);
11956 return;
11957
11958 nla_put_failure:
11959 genlmsg_cancel(msg, hdr);
11960 nlmsg_free(msg);
11961 }
11962
11963 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11964 const u8 *replay_ctr, gfp_t gfp)
11965 {
11966 struct wireless_dev *wdev = dev->ieee80211_ptr;
11967 struct wiphy *wiphy = wdev->wiphy;
11968 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11969
11970 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11971 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11972 }
11973 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11974
11975 static void
11976 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11977 struct net_device *netdev, int index,
11978 const u8 *bssid, bool preauth, gfp_t gfp)
11979 {
11980 struct sk_buff *msg;
11981 struct nlattr *attr;
11982 void *hdr;
11983
11984 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11985 if (!msg)
11986 return;
11987
11988 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11989 if (!hdr) {
11990 nlmsg_free(msg);
11991 return;
11992 }
11993
11994 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11995 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11996 goto nla_put_failure;
11997
11998 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11999 if (!attr)
12000 goto nla_put_failure;
12001
12002 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12003 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12004 (preauth &&
12005 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12006 goto nla_put_failure;
12007
12008 nla_nest_end(msg, attr);
12009
12010 genlmsg_end(msg, hdr);
12011
12012 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12013 NL80211_MCGRP_MLME, gfp);
12014 return;
12015
12016 nla_put_failure:
12017 genlmsg_cancel(msg, hdr);
12018 nlmsg_free(msg);
12019 }
12020
12021 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12022 const u8 *bssid, bool preauth, gfp_t gfp)
12023 {
12024 struct wireless_dev *wdev = dev->ieee80211_ptr;
12025 struct wiphy *wiphy = wdev->wiphy;
12026 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12027
12028 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12029 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12030 }
12031 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12032
12033 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12034 struct net_device *netdev,
12035 struct cfg80211_chan_def *chandef,
12036 gfp_t gfp,
12037 enum nl80211_commands notif,
12038 u8 count)
12039 {
12040 struct sk_buff *msg;
12041 void *hdr;
12042
12043 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12044 if (!msg)
12045 return;
12046
12047 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12048 if (!hdr) {
12049 nlmsg_free(msg);
12050 return;
12051 }
12052
12053 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12054 goto nla_put_failure;
12055
12056 if (nl80211_send_chandef(msg, chandef))
12057 goto nla_put_failure;
12058
12059 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12060 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12061 goto nla_put_failure;
12062
12063 genlmsg_end(msg, hdr);
12064
12065 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12066 NL80211_MCGRP_MLME, gfp);
12067 return;
12068
12069 nla_put_failure:
12070 genlmsg_cancel(msg, hdr);
12071 nlmsg_free(msg);
12072 }
12073
12074 void cfg80211_ch_switch_notify(struct net_device *dev,
12075 struct cfg80211_chan_def *chandef)
12076 {
12077 struct wireless_dev *wdev = dev->ieee80211_ptr;
12078 struct wiphy *wiphy = wdev->wiphy;
12079 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12080
12081 ASSERT_WDEV_LOCK(wdev);
12082
12083 trace_cfg80211_ch_switch_notify(dev, chandef);
12084
12085 wdev->chandef = *chandef;
12086 wdev->preset_chandef = *chandef;
12087 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12088 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12089 }
12090 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12091
12092 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12093 struct cfg80211_chan_def *chandef,
12094 u8 count)
12095 {
12096 struct wireless_dev *wdev = dev->ieee80211_ptr;
12097 struct wiphy *wiphy = wdev->wiphy;
12098 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12099
12100 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12101
12102 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12103 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12104 }
12105 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12106
12107 void
12108 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12109 const struct cfg80211_chan_def *chandef,
12110 enum nl80211_radar_event event,
12111 struct net_device *netdev, gfp_t gfp)
12112 {
12113 struct sk_buff *msg;
12114 void *hdr;
12115
12116 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12117 if (!msg)
12118 return;
12119
12120 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12121 if (!hdr) {
12122 nlmsg_free(msg);
12123 return;
12124 }
12125
12126 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12127 goto nla_put_failure;
12128
12129 /* NOP and radar events don't need a netdev parameter */
12130 if (netdev) {
12131 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12132
12133 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12134 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12135 goto nla_put_failure;
12136 }
12137
12138 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12139 goto nla_put_failure;
12140
12141 if (nl80211_send_chandef(msg, chandef))
12142 goto nla_put_failure;
12143
12144 genlmsg_end(msg, hdr);
12145
12146 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12147 NL80211_MCGRP_MLME, gfp);
12148 return;
12149
12150 nla_put_failure:
12151 genlmsg_cancel(msg, hdr);
12152 nlmsg_free(msg);
12153 }
12154
12155 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12156 u64 cookie, bool acked, gfp_t gfp)
12157 {
12158 struct wireless_dev *wdev = dev->ieee80211_ptr;
12159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12160 struct sk_buff *msg;
12161 void *hdr;
12162
12163 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12164
12165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12166
12167 if (!msg)
12168 return;
12169
12170 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12171 if (!hdr) {
12172 nlmsg_free(msg);
12173 return;
12174 }
12175
12176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12177 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12178 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12179 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12180 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12181 goto nla_put_failure;
12182
12183 genlmsg_end(msg, hdr);
12184
12185 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12186 NL80211_MCGRP_MLME, gfp);
12187 return;
12188
12189 nla_put_failure:
12190 genlmsg_cancel(msg, hdr);
12191 nlmsg_free(msg);
12192 }
12193 EXPORT_SYMBOL(cfg80211_probe_status);
12194
12195 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12196 const u8 *frame, size_t len,
12197 int freq, int sig_dbm)
12198 {
12199 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12200 struct sk_buff *msg;
12201 void *hdr;
12202 struct cfg80211_beacon_registration *reg;
12203
12204 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12205
12206 spin_lock_bh(&rdev->beacon_registrations_lock);
12207 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12208 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12209 if (!msg) {
12210 spin_unlock_bh(&rdev->beacon_registrations_lock);
12211 return;
12212 }
12213
12214 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12215 if (!hdr)
12216 goto nla_put_failure;
12217
12218 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12219 (freq &&
12220 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12221 (sig_dbm &&
12222 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12223 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12224 goto nla_put_failure;
12225
12226 genlmsg_end(msg, hdr);
12227
12228 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12229 }
12230 spin_unlock_bh(&rdev->beacon_registrations_lock);
12231 return;
12232
12233 nla_put_failure:
12234 spin_unlock_bh(&rdev->beacon_registrations_lock);
12235 if (hdr)
12236 genlmsg_cancel(msg, hdr);
12237 nlmsg_free(msg);
12238 }
12239 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12240
12241 #ifdef CONFIG_PM
12242 static int cfg80211_net_detect_results(struct sk_buff *msg,
12243 struct cfg80211_wowlan_wakeup *wakeup)
12244 {
12245 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12246 struct nlattr *nl_results, *nl_match, *nl_freqs;
12247 int i, j;
12248
12249 nl_results = nla_nest_start(
12250 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12251 if (!nl_results)
12252 return -EMSGSIZE;
12253
12254 for (i = 0; i < nd->n_matches; i++) {
12255 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12256
12257 nl_match = nla_nest_start(msg, i);
12258 if (!nl_match)
12259 break;
12260
12261 /* The SSID attribute is optional in nl80211, but for
12262 * simplicity reasons it's always present in the
12263 * cfg80211 structure. If a driver can't pass the
12264 * SSID, that needs to be changed. A zero length SSID
12265 * is still a valid SSID (wildcard), so it cannot be
12266 * used for this purpose.
12267 */
12268 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12269 match->ssid.ssid)) {
12270 nla_nest_cancel(msg, nl_match);
12271 goto out;
12272 }
12273
12274 if (match->n_channels) {
12275 nl_freqs = nla_nest_start(
12276 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12277 if (!nl_freqs) {
12278 nla_nest_cancel(msg, nl_match);
12279 goto out;
12280 }
12281
12282 for (j = 0; j < match->n_channels; j++) {
12283 if (nla_put_u32(msg,
12284 NL80211_ATTR_WIPHY_FREQ,
12285 match->channels[j])) {
12286 nla_nest_cancel(msg, nl_freqs);
12287 nla_nest_cancel(msg, nl_match);
12288 goto out;
12289 }
12290 }
12291
12292 nla_nest_end(msg, nl_freqs);
12293 }
12294
12295 nla_nest_end(msg, nl_match);
12296 }
12297
12298 out:
12299 nla_nest_end(msg, nl_results);
12300 return 0;
12301 }
12302
12303 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12304 struct cfg80211_wowlan_wakeup *wakeup,
12305 gfp_t gfp)
12306 {
12307 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12308 struct sk_buff *msg;
12309 void *hdr;
12310 int size = 200;
12311
12312 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12313
12314 if (wakeup)
12315 size += wakeup->packet_present_len;
12316
12317 msg = nlmsg_new(size, gfp);
12318 if (!msg)
12319 return;
12320
12321 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12322 if (!hdr)
12323 goto free_msg;
12324
12325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12326 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12327 goto free_msg;
12328
12329 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12330 wdev->netdev->ifindex))
12331 goto free_msg;
12332
12333 if (wakeup) {
12334 struct nlattr *reasons;
12335
12336 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12337 if (!reasons)
12338 goto free_msg;
12339
12340 if (wakeup->disconnect &&
12341 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12342 goto free_msg;
12343 if (wakeup->magic_pkt &&
12344 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12345 goto free_msg;
12346 if (wakeup->gtk_rekey_failure &&
12347 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12348 goto free_msg;
12349 if (wakeup->eap_identity_req &&
12350 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12351 goto free_msg;
12352 if (wakeup->four_way_handshake &&
12353 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12354 goto free_msg;
12355 if (wakeup->rfkill_release &&
12356 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12357 goto free_msg;
12358
12359 if (wakeup->pattern_idx >= 0 &&
12360 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12361 wakeup->pattern_idx))
12362 goto free_msg;
12363
12364 if (wakeup->tcp_match &&
12365 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12366 goto free_msg;
12367
12368 if (wakeup->tcp_connlost &&
12369 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12370 goto free_msg;
12371
12372 if (wakeup->tcp_nomoretokens &&
12373 nla_put_flag(msg,
12374 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12375 goto free_msg;
12376
12377 if (wakeup->packet) {
12378 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12379 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12380
12381 if (!wakeup->packet_80211) {
12382 pkt_attr =
12383 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12384 len_attr =
12385 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12386 }
12387
12388 if (wakeup->packet_len &&
12389 nla_put_u32(msg, len_attr, wakeup->packet_len))
12390 goto free_msg;
12391
12392 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12393 wakeup->packet))
12394 goto free_msg;
12395 }
12396
12397 if (wakeup->net_detect &&
12398 cfg80211_net_detect_results(msg, wakeup))
12399 goto free_msg;
12400
12401 nla_nest_end(msg, reasons);
12402 }
12403
12404 genlmsg_end(msg, hdr);
12405
12406 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12407 NL80211_MCGRP_MLME, gfp);
12408 return;
12409
12410 free_msg:
12411 nlmsg_free(msg);
12412 }
12413 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12414 #endif
12415
12416 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12417 enum nl80211_tdls_operation oper,
12418 u16 reason_code, gfp_t gfp)
12419 {
12420 struct wireless_dev *wdev = dev->ieee80211_ptr;
12421 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12422 struct sk_buff *msg;
12423 void *hdr;
12424
12425 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12426 reason_code);
12427
12428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12429 if (!msg)
12430 return;
12431
12432 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12433 if (!hdr) {
12434 nlmsg_free(msg);
12435 return;
12436 }
12437
12438 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12439 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12440 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12441 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12442 (reason_code > 0 &&
12443 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12444 goto nla_put_failure;
12445
12446 genlmsg_end(msg, hdr);
12447
12448 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12449 NL80211_MCGRP_MLME, gfp);
12450 return;
12451
12452 nla_put_failure:
12453 genlmsg_cancel(msg, hdr);
12454 nlmsg_free(msg);
12455 }
12456 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12457
12458 static int nl80211_netlink_notify(struct notifier_block * nb,
12459 unsigned long state,
12460 void *_notify)
12461 {
12462 struct netlink_notify *notify = _notify;
12463 struct cfg80211_registered_device *rdev;
12464 struct wireless_dev *wdev;
12465 struct cfg80211_beacon_registration *reg, *tmp;
12466
12467 if (state != NETLINK_URELEASE)
12468 return NOTIFY_DONE;
12469
12470 rcu_read_lock();
12471
12472 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12473 bool schedule_destroy_work = false;
12474
12475 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12476 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12477
12478 if (wdev->owner_nlportid == notify->portid)
12479 schedule_destroy_work = true;
12480 }
12481
12482 spin_lock_bh(&rdev->beacon_registrations_lock);
12483 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12484 list) {
12485 if (reg->nlportid == notify->portid) {
12486 list_del(&reg->list);
12487 kfree(reg);
12488 break;
12489 }
12490 }
12491 spin_unlock_bh(&rdev->beacon_registrations_lock);
12492
12493 if (schedule_destroy_work) {
12494 struct cfg80211_iface_destroy *destroy;
12495
12496 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12497 if (destroy) {
12498 destroy->nlportid = notify->portid;
12499 spin_lock(&rdev->destroy_list_lock);
12500 list_add(&destroy->list, &rdev->destroy_list);
12501 spin_unlock(&rdev->destroy_list_lock);
12502 schedule_work(&rdev->destroy_work);
12503 }
12504 }
12505 }
12506
12507 rcu_read_unlock();
12508
12509 return NOTIFY_OK;
12510 }
12511
12512 static struct notifier_block nl80211_netlink_notifier = {
12513 .notifier_call = nl80211_netlink_notify,
12514 };
12515
12516 void cfg80211_ft_event(struct net_device *netdev,
12517 struct cfg80211_ft_event_params *ft_event)
12518 {
12519 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12520 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12521 struct sk_buff *msg;
12522 void *hdr;
12523
12524 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12525
12526 if (!ft_event->target_ap)
12527 return;
12528
12529 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12530 if (!msg)
12531 return;
12532
12533 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12534 if (!hdr)
12535 goto out;
12536
12537 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12538 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12539 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12540 goto out;
12541
12542 if (ft_event->ies &&
12543 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12544 goto out;
12545 if (ft_event->ric_ies &&
12546 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12547 ft_event->ric_ies))
12548 goto out;
12549
12550 genlmsg_end(msg, hdr);
12551
12552 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12553 NL80211_MCGRP_MLME, GFP_KERNEL);
12554 return;
12555 out:
12556 nlmsg_free(msg);
12557 }
12558 EXPORT_SYMBOL(cfg80211_ft_event);
12559
12560 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12561 {
12562 struct cfg80211_registered_device *rdev;
12563 struct sk_buff *msg;
12564 void *hdr;
12565 u32 nlportid;
12566
12567 rdev = wiphy_to_rdev(wdev->wiphy);
12568 if (!rdev->crit_proto_nlportid)
12569 return;
12570
12571 nlportid = rdev->crit_proto_nlportid;
12572 rdev->crit_proto_nlportid = 0;
12573
12574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12575 if (!msg)
12576 return;
12577
12578 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12579 if (!hdr)
12580 goto nla_put_failure;
12581
12582 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12583 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12584 goto nla_put_failure;
12585
12586 genlmsg_end(msg, hdr);
12587
12588 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12589 return;
12590
12591 nla_put_failure:
12592 if (hdr)
12593 genlmsg_cancel(msg, hdr);
12594 nlmsg_free(msg);
12595
12596 }
12597 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12598
12599 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12600 {
12601 struct wiphy *wiphy = wdev->wiphy;
12602 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12603 struct sk_buff *msg;
12604 void *hdr;
12605
12606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12607 if (!msg)
12608 return;
12609
12610 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12611 if (!hdr)
12612 goto out;
12613
12614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12615 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12616 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12617 goto out;
12618
12619 genlmsg_end(msg, hdr);
12620
12621 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12622 NL80211_MCGRP_MLME, GFP_KERNEL);
12623 return;
12624 out:
12625 nlmsg_free(msg);
12626 }
12627
12628 /* initialisation/exit functions */
12629
12630 int nl80211_init(void)
12631 {
12632 int err;
12633
12634 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12635 nl80211_mcgrps);
12636 if (err)
12637 return err;
12638
12639 err = netlink_register_notifier(&nl80211_netlink_notifier);
12640 if (err)
12641 goto err_out;
12642
12643 return 0;
12644 err_out:
12645 genl_unregister_family(&nl80211_fam);
12646 return err;
12647 }
12648
12649 void nl80211_exit(void)
12650 {
12651 netlink_unregister_notifier(&nl80211_netlink_notifier);
12652 genl_unregister_family(&nl80211_fam);
12653 }
Linux kernel - Deliverables
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