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cfg80211: allow usermode to query wiphy specific regdom
[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_put_regdom(const struct ieee80211_regdomain *regdom,
5331 struct sk_buff *msg)
5332 {
5333 struct nlattr *nl_reg_rules;
5334 unsigned int i;
5335
5336 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5337 (regdom->dfs_region &&
5338 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5339 goto nla_put_failure;
5340
5341 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5342 if (!nl_reg_rules)
5343 goto nla_put_failure;
5344
5345 for (i = 0; i < regdom->n_reg_rules; i++) {
5346 struct nlattr *nl_reg_rule;
5347 const struct ieee80211_reg_rule *reg_rule;
5348 const struct ieee80211_freq_range *freq_range;
5349 const struct ieee80211_power_rule *power_rule;
5350 unsigned int max_bandwidth_khz;
5351
5352 reg_rule = &regdom->reg_rules[i];
5353 freq_range = &reg_rule->freq_range;
5354 power_rule = &reg_rule->power_rule;
5355
5356 nl_reg_rule = nla_nest_start(msg, i);
5357 if (!nl_reg_rule)
5358 goto nla_put_failure;
5359
5360 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5361 if (!max_bandwidth_khz)
5362 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5363 reg_rule);
5364
5365 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5366 reg_rule->flags) ||
5367 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5368 freq_range->start_freq_khz) ||
5369 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5370 freq_range->end_freq_khz) ||
5371 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5372 max_bandwidth_khz) ||
5373 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5374 power_rule->max_antenna_gain) ||
5375 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5376 power_rule->max_eirp) ||
5377 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5378 reg_rule->dfs_cac_ms))
5379 goto nla_put_failure;
5380
5381 nla_nest_end(msg, nl_reg_rule);
5382 }
5383
5384 nla_nest_end(msg, nl_reg_rules);
5385 return 0;
5386
5387 nla_put_failure:
5388 return -EMSGSIZE;
5389 }
5390
5391 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5392 {
5393 const struct ieee80211_regdomain *regdom = NULL;
5394 struct cfg80211_registered_device *rdev;
5395 struct wiphy *wiphy = NULL;
5396 struct sk_buff *msg;
5397 void *hdr;
5398
5399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5400 if (!msg)
5401 return -ENOBUFS;
5402
5403 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5404 NL80211_CMD_GET_REG);
5405 if (!hdr)
5406 goto put_failure;
5407
5408 if (info->attrs[NL80211_ATTR_WIPHY]) {
5409 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5410 if (IS_ERR(rdev)) {
5411 nlmsg_free(msg);
5412 return PTR_ERR(rdev);
5413 }
5414
5415 wiphy = &rdev->wiphy;
5416 regdom = get_wiphy_regdom(wiphy);
5417
5418 if (regdom &&
5419 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5420 goto nla_put_failure;
5421 }
5422
5423 if (!wiphy && reg_last_request_cell_base() &&
5424 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5425 NL80211_USER_REG_HINT_CELL_BASE))
5426 goto nla_put_failure;
5427
5428 rcu_read_lock();
5429
5430 if (!regdom)
5431 regdom = rcu_dereference(cfg80211_regdomain);
5432
5433 if (nl80211_put_regdom(regdom, msg))
5434 goto nla_put_failure_rcu;
5435
5436 rcu_read_unlock();
5437
5438 genlmsg_end(msg, hdr);
5439 return genlmsg_reply(msg, info);
5440
5441 nla_put_failure_rcu:
5442 rcu_read_unlock();
5443 nla_put_failure:
5444 genlmsg_cancel(msg, hdr);
5445 put_failure:
5446 nlmsg_free(msg);
5447 return -EMSGSIZE;
5448 }
5449
5450 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5451 u32 seq, int flags, struct wiphy *wiphy,
5452 const struct ieee80211_regdomain *regdom)
5453 {
5454 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5455 NL80211_CMD_GET_REG);
5456
5457 if (!hdr)
5458 return -1;
5459
5460 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5461
5462 if (nl80211_put_regdom(regdom, msg))
5463 goto nla_put_failure;
5464
5465 if (!wiphy && reg_last_request_cell_base() &&
5466 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5467 NL80211_USER_REG_HINT_CELL_BASE))
5468 goto nla_put_failure;
5469
5470 if (wiphy &&
5471 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5472 goto nla_put_failure;
5473
5474 return genlmsg_end(msg, hdr);
5475
5476 nla_put_failure:
5477 genlmsg_cancel(msg, hdr);
5478 return -EMSGSIZE;
5479 }
5480
5481 static int nl80211_get_reg_dump(struct sk_buff *skb,
5482 struct netlink_callback *cb)
5483 {
5484 const struct ieee80211_regdomain *regdom = NULL;
5485 struct cfg80211_registered_device *rdev;
5486 int err, reg_idx, start = cb->args[2];
5487
5488 rtnl_lock();
5489
5490 if (cfg80211_regdomain && start == 0) {
5491 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5492 NLM_F_MULTI, NULL,
5493 rtnl_dereference(cfg80211_regdomain));
5494 if (err < 0)
5495 goto out_err;
5496 }
5497
5498 /* the global regdom is idx 0 */
5499 reg_idx = 1;
5500 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5501 regdom = get_wiphy_regdom(&rdev->wiphy);
5502 if (!regdom)
5503 continue;
5504
5505 if (++reg_idx <= start)
5506 continue;
5507
5508 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5509 NLM_F_MULTI, &rdev->wiphy, regdom);
5510 if (err < 0) {
5511 reg_idx--;
5512 break;
5513 }
5514 }
5515
5516 cb->args[2] = reg_idx;
5517 err = skb->len;
5518 out_err:
5519 rtnl_unlock();
5520 return err;
5521 }
5522
5523 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5524 {
5525 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5526 struct nlattr *nl_reg_rule;
5527 char *alpha2;
5528 int rem_reg_rules, r;
5529 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5530 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5531 struct ieee80211_regdomain *rd;
5532
5533 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5534 return -EINVAL;
5535
5536 if (!info->attrs[NL80211_ATTR_REG_RULES])
5537 return -EINVAL;
5538
5539 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5540
5541 if (info->attrs[NL80211_ATTR_DFS_REGION])
5542 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5543
5544 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5545 rem_reg_rules) {
5546 num_rules++;
5547 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5548 return -EINVAL;
5549 }
5550
5551 if (!reg_is_valid_request(alpha2))
5552 return -EINVAL;
5553
5554 size_of_regd = sizeof(struct ieee80211_regdomain) +
5555 num_rules * sizeof(struct ieee80211_reg_rule);
5556
5557 rd = kzalloc(size_of_regd, GFP_KERNEL);
5558 if (!rd)
5559 return -ENOMEM;
5560
5561 rd->n_reg_rules = num_rules;
5562 rd->alpha2[0] = alpha2[0];
5563 rd->alpha2[1] = alpha2[1];
5564
5565 /*
5566 * Disable DFS master mode if the DFS region was
5567 * not supported or known on this kernel.
5568 */
5569 if (reg_supported_dfs_region(dfs_region))
5570 rd->dfs_region = dfs_region;
5571
5572 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5573 rem_reg_rules) {
5574 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5575 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5576 reg_rule_policy);
5577 if (r)
5578 goto bad_reg;
5579 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5580 if (r)
5581 goto bad_reg;
5582
5583 rule_idx++;
5584
5585 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5586 r = -EINVAL;
5587 goto bad_reg;
5588 }
5589 }
5590
5591 r = set_regdom(rd);
5592 /* set_regdom took ownership */
5593 rd = NULL;
5594
5595 bad_reg:
5596 kfree(rd);
5597 return r;
5598 }
5599
5600 static int validate_scan_freqs(struct nlattr *freqs)
5601 {
5602 struct nlattr *attr1, *attr2;
5603 int n_channels = 0, tmp1, tmp2;
5604
5605 nla_for_each_nested(attr1, freqs, tmp1) {
5606 n_channels++;
5607 /*
5608 * Some hardware has a limited channel list for
5609 * scanning, and it is pretty much nonsensical
5610 * to scan for a channel twice, so disallow that
5611 * and don't require drivers to check that the
5612 * channel list they get isn't longer than what
5613 * they can scan, as long as they can scan all
5614 * the channels they registered at once.
5615 */
5616 nla_for_each_nested(attr2, freqs, tmp2)
5617 if (attr1 != attr2 &&
5618 nla_get_u32(attr1) == nla_get_u32(attr2))
5619 return 0;
5620 }
5621
5622 return n_channels;
5623 }
5624
5625 static int nl80211_parse_random_mac(struct nlattr **attrs,
5626 u8 *mac_addr, u8 *mac_addr_mask)
5627 {
5628 int i;
5629
5630 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5631 memset(mac_addr, 0, ETH_ALEN);
5632 memset(mac_addr_mask, 0, ETH_ALEN);
5633 mac_addr[0] = 0x2;
5634 mac_addr_mask[0] = 0x3;
5635
5636 return 0;
5637 }
5638
5639 /* need both or none */
5640 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5641 return -EINVAL;
5642
5643 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5644 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5645
5646 /* don't allow or configure an mcast address */
5647 if (!is_multicast_ether_addr(mac_addr_mask) ||
5648 is_multicast_ether_addr(mac_addr))
5649 return -EINVAL;
5650
5651 /*
5652 * allow users to pass a MAC address that has bits set outside
5653 * of the mask, but don't bother drivers with having to deal
5654 * with such bits
5655 */
5656 for (i = 0; i < ETH_ALEN; i++)
5657 mac_addr[i] &= mac_addr_mask[i];
5658
5659 return 0;
5660 }
5661
5662 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5663 {
5664 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5665 struct wireless_dev *wdev = info->user_ptr[1];
5666 struct cfg80211_scan_request *request;
5667 struct nlattr *attr;
5668 struct wiphy *wiphy;
5669 int err, tmp, n_ssids = 0, n_channels, i;
5670 size_t ie_len;
5671
5672 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5673 return -EINVAL;
5674
5675 wiphy = &rdev->wiphy;
5676
5677 if (!rdev->ops->scan)
5678 return -EOPNOTSUPP;
5679
5680 if (rdev->scan_req || rdev->scan_msg) {
5681 err = -EBUSY;
5682 goto unlock;
5683 }
5684
5685 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5686 n_channels = validate_scan_freqs(
5687 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5688 if (!n_channels) {
5689 err = -EINVAL;
5690 goto unlock;
5691 }
5692 } else {
5693 n_channels = ieee80211_get_num_supported_channels(wiphy);
5694 }
5695
5696 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5697 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5698 n_ssids++;
5699
5700 if (n_ssids > wiphy->max_scan_ssids) {
5701 err = -EINVAL;
5702 goto unlock;
5703 }
5704
5705 if (info->attrs[NL80211_ATTR_IE])
5706 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5707 else
5708 ie_len = 0;
5709
5710 if (ie_len > wiphy->max_scan_ie_len) {
5711 err = -EINVAL;
5712 goto unlock;
5713 }
5714
5715 request = kzalloc(sizeof(*request)
5716 + sizeof(*request->ssids) * n_ssids
5717 + sizeof(*request->channels) * n_channels
5718 + ie_len, GFP_KERNEL);
5719 if (!request) {
5720 err = -ENOMEM;
5721 goto unlock;
5722 }
5723
5724 if (n_ssids)
5725 request->ssids = (void *)&request->channels[n_channels];
5726 request->n_ssids = n_ssids;
5727 if (ie_len) {
5728 if (request->ssids)
5729 request->ie = (void *)(request->ssids + n_ssids);
5730 else
5731 request->ie = (void *)(request->channels + n_channels);
5732 }
5733
5734 i = 0;
5735 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5736 /* user specified, bail out if channel not found */
5737 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5738 struct ieee80211_channel *chan;
5739
5740 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5741
5742 if (!chan) {
5743 err = -EINVAL;
5744 goto out_free;
5745 }
5746
5747 /* ignore disabled channels */
5748 if (chan->flags & IEEE80211_CHAN_DISABLED)
5749 continue;
5750
5751 request->channels[i] = chan;
5752 i++;
5753 }
5754 } else {
5755 enum ieee80211_band band;
5756
5757 /* all channels */
5758 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5759 int j;
5760 if (!wiphy->bands[band])
5761 continue;
5762 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5763 struct ieee80211_channel *chan;
5764
5765 chan = &wiphy->bands[band]->channels[j];
5766
5767 if (chan->flags & IEEE80211_CHAN_DISABLED)
5768 continue;
5769
5770 request->channels[i] = chan;
5771 i++;
5772 }
5773 }
5774 }
5775
5776 if (!i) {
5777 err = -EINVAL;
5778 goto out_free;
5779 }
5780
5781 request->n_channels = i;
5782
5783 i = 0;
5784 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5785 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5786 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5787 err = -EINVAL;
5788 goto out_free;
5789 }
5790 request->ssids[i].ssid_len = nla_len(attr);
5791 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5792 i++;
5793 }
5794 }
5795
5796 if (info->attrs[NL80211_ATTR_IE]) {
5797 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5798 memcpy((void *)request->ie,
5799 nla_data(info->attrs[NL80211_ATTR_IE]),
5800 request->ie_len);
5801 }
5802
5803 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5804 if (wiphy->bands[i])
5805 request->rates[i] =
5806 (1 << wiphy->bands[i]->n_bitrates) - 1;
5807
5808 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5809 nla_for_each_nested(attr,
5810 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5811 tmp) {
5812 enum ieee80211_band band = nla_type(attr);
5813
5814 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5815 err = -EINVAL;
5816 goto out_free;
5817 }
5818
5819 if (!wiphy->bands[band])
5820 continue;
5821
5822 err = ieee80211_get_ratemask(wiphy->bands[band],
5823 nla_data(attr),
5824 nla_len(attr),
5825 &request->rates[band]);
5826 if (err)
5827 goto out_free;
5828 }
5829 }
5830
5831 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5832 request->flags = nla_get_u32(
5833 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5834 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5835 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5836 err = -EOPNOTSUPP;
5837 goto out_free;
5838 }
5839
5840 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5841 if (!(wiphy->features &
5842 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5843 err = -EOPNOTSUPP;
5844 goto out_free;
5845 }
5846
5847 if (wdev->current_bss) {
5848 err = -EOPNOTSUPP;
5849 goto out_free;
5850 }
5851
5852 err = nl80211_parse_random_mac(info->attrs,
5853 request->mac_addr,
5854 request->mac_addr_mask);
5855 if (err)
5856 goto out_free;
5857 }
5858 }
5859
5860 request->no_cck =
5861 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5862
5863 request->wdev = wdev;
5864 request->wiphy = &rdev->wiphy;
5865 request->scan_start = jiffies;
5866
5867 rdev->scan_req = request;
5868 err = rdev_scan(rdev, request);
5869
5870 if (!err) {
5871 nl80211_send_scan_start(rdev, wdev);
5872 if (wdev->netdev)
5873 dev_hold(wdev->netdev);
5874 } else {
5875 out_free:
5876 rdev->scan_req = NULL;
5877 kfree(request);
5878 }
5879
5880 unlock:
5881 return err;
5882 }
5883
5884 static struct cfg80211_sched_scan_request *
5885 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5886 struct nlattr **attrs)
5887 {
5888 struct cfg80211_sched_scan_request *request;
5889 struct nlattr *attr;
5890 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5891 u32 interval;
5892 enum ieee80211_band band;
5893 size_t ie_len;
5894 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5895 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5896
5897 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5898 return ERR_PTR(-EINVAL);
5899
5900 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5901 return ERR_PTR(-EINVAL);
5902
5903 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5904 if (interval == 0)
5905 return ERR_PTR(-EINVAL);
5906
5907 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5908 n_channels = validate_scan_freqs(
5909 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5910 if (!n_channels)
5911 return ERR_PTR(-EINVAL);
5912 } else {
5913 n_channels = ieee80211_get_num_supported_channels(wiphy);
5914 }
5915
5916 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5917 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5918 tmp)
5919 n_ssids++;
5920
5921 if (n_ssids > wiphy->max_sched_scan_ssids)
5922 return ERR_PTR(-EINVAL);
5923
5924 /*
5925 * First, count the number of 'real' matchsets. Due to an issue with
5926 * the old implementation, matchsets containing only the RSSI attribute
5927 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5928 * RSSI for all matchsets, rather than their own matchset for reporting
5929 * all APs with a strong RSSI. This is needed to be compatible with
5930 * older userspace that treated a matchset with only the RSSI as the
5931 * global RSSI for all other matchsets - if there are other matchsets.
5932 */
5933 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5934 nla_for_each_nested(attr,
5935 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5936 tmp) {
5937 struct nlattr *rssi;
5938
5939 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5940 nla_data(attr), nla_len(attr),
5941 nl80211_match_policy);
5942 if (err)
5943 return ERR_PTR(err);
5944 /* add other standalone attributes here */
5945 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5946 n_match_sets++;
5947 continue;
5948 }
5949 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5950 if (rssi)
5951 default_match_rssi = nla_get_s32(rssi);
5952 }
5953 }
5954
5955 /* However, if there's no other matchset, add the RSSI one */
5956 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5957 n_match_sets = 1;
5958
5959 if (n_match_sets > wiphy->max_match_sets)
5960 return ERR_PTR(-EINVAL);
5961
5962 if (attrs[NL80211_ATTR_IE])
5963 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5964 else
5965 ie_len = 0;
5966
5967 if (ie_len > wiphy->max_sched_scan_ie_len)
5968 return ERR_PTR(-EINVAL);
5969
5970 request = kzalloc(sizeof(*request)
5971 + sizeof(*request->ssids) * n_ssids
5972 + sizeof(*request->match_sets) * n_match_sets
5973 + sizeof(*request->channels) * n_channels
5974 + ie_len, GFP_KERNEL);
5975 if (!request)
5976 return ERR_PTR(-ENOMEM);
5977
5978 if (n_ssids)
5979 request->ssids = (void *)&request->channels[n_channels];
5980 request->n_ssids = n_ssids;
5981 if (ie_len) {
5982 if (request->ssids)
5983 request->ie = (void *)(request->ssids + n_ssids);
5984 else
5985 request->ie = (void *)(request->channels + n_channels);
5986 }
5987
5988 if (n_match_sets) {
5989 if (request->ie)
5990 request->match_sets = (void *)(request->ie + ie_len);
5991 else if (request->ssids)
5992 request->match_sets =
5993 (void *)(request->ssids + n_ssids);
5994 else
5995 request->match_sets =
5996 (void *)(request->channels + n_channels);
5997 }
5998 request->n_match_sets = n_match_sets;
5999
6000 i = 0;
6001 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6002 /* user specified, bail out if channel not found */
6003 nla_for_each_nested(attr,
6004 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6005 tmp) {
6006 struct ieee80211_channel *chan;
6007
6008 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6009
6010 if (!chan) {
6011 err = -EINVAL;
6012 goto out_free;
6013 }
6014
6015 /* ignore disabled channels */
6016 if (chan->flags & IEEE80211_CHAN_DISABLED)
6017 continue;
6018
6019 request->channels[i] = chan;
6020 i++;
6021 }
6022 } else {
6023 /* all channels */
6024 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6025 int j;
6026 if (!wiphy->bands[band])
6027 continue;
6028 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6029 struct ieee80211_channel *chan;
6030
6031 chan = &wiphy->bands[band]->channels[j];
6032
6033 if (chan->flags & IEEE80211_CHAN_DISABLED)
6034 continue;
6035
6036 request->channels[i] = chan;
6037 i++;
6038 }
6039 }
6040 }
6041
6042 if (!i) {
6043 err = -EINVAL;
6044 goto out_free;
6045 }
6046
6047 request->n_channels = i;
6048
6049 i = 0;
6050 if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6051 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6052 tmp) {
6053 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6054 err = -EINVAL;
6055 goto out_free;
6056 }
6057 request->ssids[i].ssid_len = nla_len(attr);
6058 memcpy(request->ssids[i].ssid, nla_data(attr),
6059 nla_len(attr));
6060 i++;
6061 }
6062 }
6063
6064 i = 0;
6065 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6066 nla_for_each_nested(attr,
6067 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6068 tmp) {
6069 struct nlattr *ssid, *rssi;
6070
6071 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6072 nla_data(attr), nla_len(attr),
6073 nl80211_match_policy);
6074 if (err)
6075 goto out_free;
6076 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6077 if (ssid) {
6078 if (WARN_ON(i >= n_match_sets)) {
6079 /* this indicates a programming error,
6080 * the loop above should have verified
6081 * things properly
6082 */
6083 err = -EINVAL;
6084 goto out_free;
6085 }
6086
6087 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6088 err = -EINVAL;
6089 goto out_free;
6090 }
6091 memcpy(request->match_sets[i].ssid.ssid,
6092 nla_data(ssid), nla_len(ssid));
6093 request->match_sets[i].ssid.ssid_len =
6094 nla_len(ssid);
6095 /* special attribute - old implemenation w/a */
6096 request->match_sets[i].rssi_thold =
6097 default_match_rssi;
6098 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6099 if (rssi)
6100 request->match_sets[i].rssi_thold =
6101 nla_get_s32(rssi);
6102 }
6103 i++;
6104 }
6105
6106 /* there was no other matchset, so the RSSI one is alone */
6107 if (i == 0)
6108 request->match_sets[0].rssi_thold = default_match_rssi;
6109
6110 request->min_rssi_thold = INT_MAX;
6111 for (i = 0; i < n_match_sets; i++)
6112 request->min_rssi_thold =
6113 min(request->match_sets[i].rssi_thold,
6114 request->min_rssi_thold);
6115 } else {
6116 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6117 }
6118
6119 if (ie_len) {
6120 request->ie_len = ie_len;
6121 memcpy((void *)request->ie,
6122 nla_data(attrs[NL80211_ATTR_IE]),
6123 request->ie_len);
6124 }
6125
6126 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6127 request->flags = nla_get_u32(
6128 attrs[NL80211_ATTR_SCAN_FLAGS]);
6129 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6130 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6131 err = -EOPNOTSUPP;
6132 goto out_free;
6133 }
6134
6135 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6136 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6137
6138 if (!wdev) /* must be net-detect */
6139 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6140
6141 if (!(wiphy->features & flg)) {
6142 err = -EOPNOTSUPP;
6143 goto out_free;
6144 }
6145
6146 if (wdev && wdev->current_bss) {
6147 err = -EOPNOTSUPP;
6148 goto out_free;
6149 }
6150
6151 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6152 request->mac_addr_mask);
6153 if (err)
6154 goto out_free;
6155 }
6156 }
6157
6158 request->interval = interval;
6159 request->scan_start = jiffies;
6160
6161 return request;
6162
6163 out_free:
6164 kfree(request);
6165 return ERR_PTR(err);
6166 }
6167
6168 static int nl80211_start_sched_scan(struct sk_buff *skb,
6169 struct genl_info *info)
6170 {
6171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6172 struct net_device *dev = info->user_ptr[1];
6173 struct wireless_dev *wdev = dev->ieee80211_ptr;
6174 int err;
6175
6176 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6177 !rdev->ops->sched_scan_start)
6178 return -EOPNOTSUPP;
6179
6180 if (rdev->sched_scan_req)
6181 return -EINPROGRESS;
6182
6183 rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6184 info->attrs);
6185 err = PTR_ERR_OR_ZERO(rdev->sched_scan_req);
6186 if (err)
6187 goto out_err;
6188
6189 err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req);
6190 if (err)
6191 goto out_free;
6192
6193 rdev->sched_scan_req->dev = dev;
6194 rdev->sched_scan_req->wiphy = &rdev->wiphy;
6195
6196 nl80211_send_sched_scan(rdev, dev,
6197 NL80211_CMD_START_SCHED_SCAN);
6198 return 0;
6199
6200 out_free:
6201 kfree(rdev->sched_scan_req);
6202 out_err:
6203 rdev->sched_scan_req = NULL;
6204 return err;
6205 }
6206
6207 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6208 struct genl_info *info)
6209 {
6210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6211
6212 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6213 !rdev->ops->sched_scan_stop)
6214 return -EOPNOTSUPP;
6215
6216 return __cfg80211_stop_sched_scan(rdev, false);
6217 }
6218
6219 static int nl80211_start_radar_detection(struct sk_buff *skb,
6220 struct genl_info *info)
6221 {
6222 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6223 struct net_device *dev = info->user_ptr[1];
6224 struct wireless_dev *wdev = dev->ieee80211_ptr;
6225 struct cfg80211_chan_def chandef;
6226 enum nl80211_dfs_regions dfs_region;
6227 unsigned int cac_time_ms;
6228 int err;
6229
6230 dfs_region = reg_get_dfs_region(wdev->wiphy);
6231 if (dfs_region == NL80211_DFS_UNSET)
6232 return -EINVAL;
6233
6234 err = nl80211_parse_chandef(rdev, info, &chandef);
6235 if (err)
6236 return err;
6237
6238 if (netif_carrier_ok(dev))
6239 return -EBUSY;
6240
6241 if (wdev->cac_started)
6242 return -EBUSY;
6243
6244 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6245 wdev->iftype);
6246 if (err < 0)
6247 return err;
6248
6249 if (err == 0)
6250 return -EINVAL;
6251
6252 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6253 return -EINVAL;
6254
6255 if (!rdev->ops->start_radar_detection)
6256 return -EOPNOTSUPP;
6257
6258 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6259 if (WARN_ON(!cac_time_ms))
6260 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6261
6262 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6263 cac_time_ms);
6264 if (!err) {
6265 wdev->chandef = chandef;
6266 wdev->cac_started = true;
6267 wdev->cac_start_time = jiffies;
6268 wdev->cac_time_ms = cac_time_ms;
6269 }
6270 return err;
6271 }
6272
6273 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6274 {
6275 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6276 struct net_device *dev = info->user_ptr[1];
6277 struct wireless_dev *wdev = dev->ieee80211_ptr;
6278 struct cfg80211_csa_settings params;
6279 /* csa_attrs is defined static to avoid waste of stack size - this
6280 * function is called under RTNL lock, so this should not be a problem.
6281 */
6282 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6283 int err;
6284 bool need_new_beacon = false;
6285 int len, i;
6286 u32 cs_count;
6287
6288 if (!rdev->ops->channel_switch ||
6289 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6290 return -EOPNOTSUPP;
6291
6292 switch (dev->ieee80211_ptr->iftype) {
6293 case NL80211_IFTYPE_AP:
6294 case NL80211_IFTYPE_P2P_GO:
6295 need_new_beacon = true;
6296
6297 /* useless if AP is not running */
6298 if (!wdev->beacon_interval)
6299 return -ENOTCONN;
6300 break;
6301 case NL80211_IFTYPE_ADHOC:
6302 if (!wdev->ssid_len)
6303 return -ENOTCONN;
6304 break;
6305 case NL80211_IFTYPE_MESH_POINT:
6306 if (!wdev->mesh_id_len)
6307 return -ENOTCONN;
6308 break;
6309 default:
6310 return -EOPNOTSUPP;
6311 }
6312
6313 memset(&params, 0, sizeof(params));
6314
6315 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6316 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6317 return -EINVAL;
6318
6319 /* only important for AP, IBSS and mesh create IEs internally */
6320 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6321 return -EINVAL;
6322
6323 /* Even though the attribute is u32, the specification says
6324 * u8, so let's make sure we don't overflow.
6325 */
6326 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6327 if (cs_count > 255)
6328 return -EINVAL;
6329
6330 params.count = cs_count;
6331
6332 if (!need_new_beacon)
6333 goto skip_beacons;
6334
6335 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6336 if (err)
6337 return err;
6338
6339 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6340 info->attrs[NL80211_ATTR_CSA_IES],
6341 nl80211_policy);
6342 if (err)
6343 return err;
6344
6345 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6346 if (err)
6347 return err;
6348
6349 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6350 return -EINVAL;
6351
6352 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6353 if (!len || (len % sizeof(u16)))
6354 return -EINVAL;
6355
6356 params.n_counter_offsets_beacon = len / sizeof(u16);
6357 if (rdev->wiphy.max_num_csa_counters &&
6358 (params.n_counter_offsets_beacon >
6359 rdev->wiphy.max_num_csa_counters))
6360 return -EINVAL;
6361
6362 params.counter_offsets_beacon =
6363 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6364
6365 /* sanity checks - counters should fit and be the same */
6366 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6367 u16 offset = params.counter_offsets_beacon[i];
6368
6369 if (offset >= params.beacon_csa.tail_len)
6370 return -EINVAL;
6371
6372 if (params.beacon_csa.tail[offset] != params.count)
6373 return -EINVAL;
6374 }
6375
6376 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6377 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6378 if (!len || (len % sizeof(u16)))
6379 return -EINVAL;
6380
6381 params.n_counter_offsets_presp = len / sizeof(u16);
6382 if (rdev->wiphy.max_num_csa_counters &&
6383 (params.n_counter_offsets_beacon >
6384 rdev->wiphy.max_num_csa_counters))
6385 return -EINVAL;
6386
6387 params.counter_offsets_presp =
6388 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6389
6390 /* sanity checks - counters should fit and be the same */
6391 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6392 u16 offset = params.counter_offsets_presp[i];
6393
6394 if (offset >= params.beacon_csa.probe_resp_len)
6395 return -EINVAL;
6396
6397 if (params.beacon_csa.probe_resp[offset] !=
6398 params.count)
6399 return -EINVAL;
6400 }
6401 }
6402
6403 skip_beacons:
6404 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6405 if (err)
6406 return err;
6407
6408 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6409 wdev->iftype))
6410 return -EINVAL;
6411
6412 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6413 &params.chandef,
6414 wdev->iftype);
6415 if (err < 0)
6416 return err;
6417
6418 if (err > 0)
6419 params.radar_required = true;
6420
6421 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6422 params.block_tx = true;
6423
6424 wdev_lock(wdev);
6425 err = rdev_channel_switch(rdev, dev, &params);
6426 wdev_unlock(wdev);
6427
6428 return err;
6429 }
6430
6431 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6432 u32 seq, int flags,
6433 struct cfg80211_registered_device *rdev,
6434 struct wireless_dev *wdev,
6435 struct cfg80211_internal_bss *intbss)
6436 {
6437 struct cfg80211_bss *res = &intbss->pub;
6438 const struct cfg80211_bss_ies *ies;
6439 void *hdr;
6440 struct nlattr *bss;
6441
6442 ASSERT_WDEV_LOCK(wdev);
6443
6444 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6445 NL80211_CMD_NEW_SCAN_RESULTS);
6446 if (!hdr)
6447 return -1;
6448
6449 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6450
6451 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6452 goto nla_put_failure;
6453 if (wdev->netdev &&
6454 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6455 goto nla_put_failure;
6456 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6457 goto nla_put_failure;
6458
6459 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6460 if (!bss)
6461 goto nla_put_failure;
6462 if ((!is_zero_ether_addr(res->bssid) &&
6463 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6464 goto nla_put_failure;
6465
6466 rcu_read_lock();
6467 /* indicate whether we have probe response data or not */
6468 if (rcu_access_pointer(res->proberesp_ies) &&
6469 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6470 goto fail_unlock_rcu;
6471
6472 /* this pointer prefers to be pointed to probe response data
6473 * but is always valid
6474 */
6475 ies = rcu_dereference(res->ies);
6476 if (ies) {
6477 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6478 goto fail_unlock_rcu;
6479 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6480 ies->len, ies->data))
6481 goto fail_unlock_rcu;
6482 }
6483
6484 /* and this pointer is always (unless driver didn't know) beacon data */
6485 ies = rcu_dereference(res->beacon_ies);
6486 if (ies && ies->from_beacon) {
6487 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6488 goto fail_unlock_rcu;
6489 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6490 ies->len, ies->data))
6491 goto fail_unlock_rcu;
6492 }
6493 rcu_read_unlock();
6494
6495 if (res->beacon_interval &&
6496 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6497 goto nla_put_failure;
6498 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6499 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6500 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6501 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6502 jiffies_to_msecs(jiffies - intbss->ts)))
6503 goto nla_put_failure;
6504
6505 switch (rdev->wiphy.signal_type) {
6506 case CFG80211_SIGNAL_TYPE_MBM:
6507 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6508 goto nla_put_failure;
6509 break;
6510 case CFG80211_SIGNAL_TYPE_UNSPEC:
6511 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6512 goto nla_put_failure;
6513 break;
6514 default:
6515 break;
6516 }
6517
6518 switch (wdev->iftype) {
6519 case NL80211_IFTYPE_P2P_CLIENT:
6520 case NL80211_IFTYPE_STATION:
6521 if (intbss == wdev->current_bss &&
6522 nla_put_u32(msg, NL80211_BSS_STATUS,
6523 NL80211_BSS_STATUS_ASSOCIATED))
6524 goto nla_put_failure;
6525 break;
6526 case NL80211_IFTYPE_ADHOC:
6527 if (intbss == wdev->current_bss &&
6528 nla_put_u32(msg, NL80211_BSS_STATUS,
6529 NL80211_BSS_STATUS_IBSS_JOINED))
6530 goto nla_put_failure;
6531 break;
6532 default:
6533 break;
6534 }
6535
6536 nla_nest_end(msg, bss);
6537
6538 return genlmsg_end(msg, hdr);
6539
6540 fail_unlock_rcu:
6541 rcu_read_unlock();
6542 nla_put_failure:
6543 genlmsg_cancel(msg, hdr);
6544 return -EMSGSIZE;
6545 }
6546
6547 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6548 {
6549 struct cfg80211_registered_device *rdev;
6550 struct cfg80211_internal_bss *scan;
6551 struct wireless_dev *wdev;
6552 int start = cb->args[2], idx = 0;
6553 int err;
6554
6555 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6556 if (err)
6557 return err;
6558
6559 wdev_lock(wdev);
6560 spin_lock_bh(&rdev->bss_lock);
6561 cfg80211_bss_expire(rdev);
6562
6563 cb->seq = rdev->bss_generation;
6564
6565 list_for_each_entry(scan, &rdev->bss_list, list) {
6566 if (++idx <= start)
6567 continue;
6568 if (nl80211_send_bss(skb, cb,
6569 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6570 rdev, wdev, scan) < 0) {
6571 idx--;
6572 break;
6573 }
6574 }
6575
6576 spin_unlock_bh(&rdev->bss_lock);
6577 wdev_unlock(wdev);
6578
6579 cb->args[2] = idx;
6580 nl80211_finish_wdev_dump(rdev);
6581
6582 return skb->len;
6583 }
6584
6585 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6586 int flags, struct net_device *dev,
6587 struct survey_info *survey)
6588 {
6589 void *hdr;
6590 struct nlattr *infoattr;
6591
6592 hdr = nl80211hdr_put(msg, portid, seq, flags,
6593 NL80211_CMD_NEW_SURVEY_RESULTS);
6594 if (!hdr)
6595 return -ENOMEM;
6596
6597 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6598 goto nla_put_failure;
6599
6600 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6601 if (!infoattr)
6602 goto nla_put_failure;
6603
6604 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6605 survey->channel->center_freq))
6606 goto nla_put_failure;
6607
6608 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6609 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6610 goto nla_put_failure;
6611 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6612 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6613 goto nla_put_failure;
6614 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6615 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6616 survey->channel_time))
6617 goto nla_put_failure;
6618 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6619 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6620 survey->channel_time_busy))
6621 goto nla_put_failure;
6622 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6623 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6624 survey->channel_time_ext_busy))
6625 goto nla_put_failure;
6626 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6627 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6628 survey->channel_time_rx))
6629 goto nla_put_failure;
6630 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6631 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6632 survey->channel_time_tx))
6633 goto nla_put_failure;
6634
6635 nla_nest_end(msg, infoattr);
6636
6637 return genlmsg_end(msg, hdr);
6638
6639 nla_put_failure:
6640 genlmsg_cancel(msg, hdr);
6641 return -EMSGSIZE;
6642 }
6643
6644 static int nl80211_dump_survey(struct sk_buff *skb,
6645 struct netlink_callback *cb)
6646 {
6647 struct survey_info survey;
6648 struct cfg80211_registered_device *rdev;
6649 struct wireless_dev *wdev;
6650 int survey_idx = cb->args[2];
6651 int res;
6652
6653 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6654 if (res)
6655 return res;
6656
6657 if (!wdev->netdev) {
6658 res = -EINVAL;
6659 goto out_err;
6660 }
6661
6662 if (!rdev->ops->dump_survey) {
6663 res = -EOPNOTSUPP;
6664 goto out_err;
6665 }
6666
6667 while (1) {
6668 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6669 if (res == -ENOENT)
6670 break;
6671 if (res)
6672 goto out_err;
6673
6674 /* Survey without a channel doesn't make sense */
6675 if (!survey.channel) {
6676 res = -EINVAL;
6677 goto out;
6678 }
6679
6680 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6681 survey_idx++;
6682 continue;
6683 }
6684
6685 if (nl80211_send_survey(skb,
6686 NETLINK_CB(cb->skb).portid,
6687 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6688 wdev->netdev, &survey) < 0)
6689 goto out;
6690 survey_idx++;
6691 }
6692
6693 out:
6694 cb->args[2] = survey_idx;
6695 res = skb->len;
6696 out_err:
6697 nl80211_finish_wdev_dump(rdev);
6698 return res;
6699 }
6700
6701 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6702 {
6703 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6704 NL80211_WPA_VERSION_2));
6705 }
6706
6707 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6708 {
6709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6710 struct net_device *dev = info->user_ptr[1];
6711 struct ieee80211_channel *chan;
6712 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6713 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6714 enum nl80211_auth_type auth_type;
6715 struct key_parse key;
6716 bool local_state_change;
6717
6718 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6719 return -EINVAL;
6720
6721 if (!info->attrs[NL80211_ATTR_MAC])
6722 return -EINVAL;
6723
6724 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6725 return -EINVAL;
6726
6727 if (!info->attrs[NL80211_ATTR_SSID])
6728 return -EINVAL;
6729
6730 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6731 return -EINVAL;
6732
6733 err = nl80211_parse_key(info, &key);
6734 if (err)
6735 return err;
6736
6737 if (key.idx >= 0) {
6738 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6739 return -EINVAL;
6740 if (!key.p.key || !key.p.key_len)
6741 return -EINVAL;
6742 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6743 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6744 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6745 key.p.key_len != WLAN_KEY_LEN_WEP104))
6746 return -EINVAL;
6747 if (key.idx > 4)
6748 return -EINVAL;
6749 } else {
6750 key.p.key_len = 0;
6751 key.p.key = NULL;
6752 }
6753
6754 if (key.idx >= 0) {
6755 int i;
6756 bool ok = false;
6757 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6758 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6759 ok = true;
6760 break;
6761 }
6762 }
6763 if (!ok)
6764 return -EINVAL;
6765 }
6766
6767 if (!rdev->ops->auth)
6768 return -EOPNOTSUPP;
6769
6770 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6771 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6772 return -EOPNOTSUPP;
6773
6774 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6775 chan = nl80211_get_valid_chan(&rdev->wiphy,
6776 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6777 if (!chan)
6778 return -EINVAL;
6779
6780 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6781 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6782
6783 if (info->attrs[NL80211_ATTR_IE]) {
6784 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6785 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6786 }
6787
6788 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6789 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6790 return -EINVAL;
6791
6792 if (auth_type == NL80211_AUTHTYPE_SAE &&
6793 !info->attrs[NL80211_ATTR_SAE_DATA])
6794 return -EINVAL;
6795
6796 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6797 if (auth_type != NL80211_AUTHTYPE_SAE)
6798 return -EINVAL;
6799 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6800 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6801 /* need to include at least Auth Transaction and Status Code */
6802 if (sae_data_len < 4)
6803 return -EINVAL;
6804 }
6805
6806 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6807
6808 /*
6809 * Since we no longer track auth state, ignore
6810 * requests to only change local state.
6811 */
6812 if (local_state_change)
6813 return 0;
6814
6815 wdev_lock(dev->ieee80211_ptr);
6816 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6817 ssid, ssid_len, ie, ie_len,
6818 key.p.key, key.p.key_len, key.idx,
6819 sae_data, sae_data_len);
6820 wdev_unlock(dev->ieee80211_ptr);
6821 return err;
6822 }
6823
6824 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6825 struct genl_info *info,
6826 struct cfg80211_crypto_settings *settings,
6827 int cipher_limit)
6828 {
6829 memset(settings, 0, sizeof(*settings));
6830
6831 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6832
6833 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6834 u16 proto;
6835 proto = nla_get_u16(
6836 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6837 settings->control_port_ethertype = cpu_to_be16(proto);
6838 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6839 proto != ETH_P_PAE)
6840 return -EINVAL;
6841 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6842 settings->control_port_no_encrypt = true;
6843 } else
6844 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6845
6846 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6847 void *data;
6848 int len, i;
6849
6850 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6851 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6852 settings->n_ciphers_pairwise = len / sizeof(u32);
6853
6854 if (len % sizeof(u32))
6855 return -EINVAL;
6856
6857 if (settings->n_ciphers_pairwise > cipher_limit)
6858 return -EINVAL;
6859
6860 memcpy(settings->ciphers_pairwise, data, len);
6861
6862 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6863 if (!cfg80211_supported_cipher_suite(
6864 &rdev->wiphy,
6865 settings->ciphers_pairwise[i]))
6866 return -EINVAL;
6867 }
6868
6869 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6870 settings->cipher_group =
6871 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6872 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6873 settings->cipher_group))
6874 return -EINVAL;
6875 }
6876
6877 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6878 settings->wpa_versions =
6879 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6880 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6881 return -EINVAL;
6882 }
6883
6884 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6885 void *data;
6886 int len;
6887
6888 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6889 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6890 settings->n_akm_suites = len / sizeof(u32);
6891
6892 if (len % sizeof(u32))
6893 return -EINVAL;
6894
6895 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6896 return -EINVAL;
6897
6898 memcpy(settings->akm_suites, data, len);
6899 }
6900
6901 return 0;
6902 }
6903
6904 static int nl80211_associate(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 struct ieee80211_channel *chan;
6909 struct cfg80211_assoc_request req = {};
6910 const u8 *bssid, *ssid;
6911 int err, ssid_len = 0;
6912
6913 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6914 return -EINVAL;
6915
6916 if (!info->attrs[NL80211_ATTR_MAC] ||
6917 !info->attrs[NL80211_ATTR_SSID] ||
6918 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6919 return -EINVAL;
6920
6921 if (!rdev->ops->assoc)
6922 return -EOPNOTSUPP;
6923
6924 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6925 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6926 return -EOPNOTSUPP;
6927
6928 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6929
6930 chan = nl80211_get_valid_chan(&rdev->wiphy,
6931 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6932 if (!chan)
6933 return -EINVAL;
6934
6935 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6936 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6937
6938 if (info->attrs[NL80211_ATTR_IE]) {
6939 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6940 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6941 }
6942
6943 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6944 enum nl80211_mfp mfp =
6945 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6946 if (mfp == NL80211_MFP_REQUIRED)
6947 req.use_mfp = true;
6948 else if (mfp != NL80211_MFP_NO)
6949 return -EINVAL;
6950 }
6951
6952 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6953 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6954
6955 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6956 req.flags |= ASSOC_REQ_DISABLE_HT;
6957
6958 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6959 memcpy(&req.ht_capa_mask,
6960 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6961 sizeof(req.ht_capa_mask));
6962
6963 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6964 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6965 return -EINVAL;
6966 memcpy(&req.ht_capa,
6967 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6968 sizeof(req.ht_capa));
6969 }
6970
6971 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6972 req.flags |= ASSOC_REQ_DISABLE_VHT;
6973
6974 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6975 memcpy(&req.vht_capa_mask,
6976 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6977 sizeof(req.vht_capa_mask));
6978
6979 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6980 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6981 return -EINVAL;
6982 memcpy(&req.vht_capa,
6983 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6984 sizeof(req.vht_capa));
6985 }
6986
6987 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6988 if (!(rdev->wiphy.features &
6989 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6990 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6991 return -EINVAL;
6992 req.flags |= ASSOC_REQ_USE_RRM;
6993 }
6994
6995 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6996 if (!err) {
6997 wdev_lock(dev->ieee80211_ptr);
6998 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6999 ssid, ssid_len, &req);
7000 wdev_unlock(dev->ieee80211_ptr);
7001 }
7002
7003 return err;
7004 }
7005
7006 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7007 {
7008 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7009 struct net_device *dev = info->user_ptr[1];
7010 const u8 *ie = NULL, *bssid;
7011 int ie_len = 0, err;
7012 u16 reason_code;
7013 bool local_state_change;
7014
7015 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7016 return -EINVAL;
7017
7018 if (!info->attrs[NL80211_ATTR_MAC])
7019 return -EINVAL;
7020
7021 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7022 return -EINVAL;
7023
7024 if (!rdev->ops->deauth)
7025 return -EOPNOTSUPP;
7026
7027 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7028 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7029 return -EOPNOTSUPP;
7030
7031 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7032
7033 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7034 if (reason_code == 0) {
7035 /* Reason Code 0 is reserved */
7036 return -EINVAL;
7037 }
7038
7039 if (info->attrs[NL80211_ATTR_IE]) {
7040 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7041 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7042 }
7043
7044 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7045
7046 wdev_lock(dev->ieee80211_ptr);
7047 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7048 local_state_change);
7049 wdev_unlock(dev->ieee80211_ptr);
7050 return err;
7051 }
7052
7053 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7054 {
7055 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7056 struct net_device *dev = info->user_ptr[1];
7057 const u8 *ie = NULL, *bssid;
7058 int ie_len = 0, err;
7059 u16 reason_code;
7060 bool local_state_change;
7061
7062 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7063 return -EINVAL;
7064
7065 if (!info->attrs[NL80211_ATTR_MAC])
7066 return -EINVAL;
7067
7068 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7069 return -EINVAL;
7070
7071 if (!rdev->ops->disassoc)
7072 return -EOPNOTSUPP;
7073
7074 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7075 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7076 return -EOPNOTSUPP;
7077
7078 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7079
7080 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7081 if (reason_code == 0) {
7082 /* Reason Code 0 is reserved */
7083 return -EINVAL;
7084 }
7085
7086 if (info->attrs[NL80211_ATTR_IE]) {
7087 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7088 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7089 }
7090
7091 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7092
7093 wdev_lock(dev->ieee80211_ptr);
7094 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7095 local_state_change);
7096 wdev_unlock(dev->ieee80211_ptr);
7097 return err;
7098 }
7099
7100 static bool
7101 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7102 int mcast_rate[IEEE80211_NUM_BANDS],
7103 int rateval)
7104 {
7105 struct wiphy *wiphy = &rdev->wiphy;
7106 bool found = false;
7107 int band, i;
7108
7109 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7110 struct ieee80211_supported_band *sband;
7111
7112 sband = wiphy->bands[band];
7113 if (!sband)
7114 continue;
7115
7116 for (i = 0; i < sband->n_bitrates; i++) {
7117 if (sband->bitrates[i].bitrate == rateval) {
7118 mcast_rate[band] = i + 1;
7119 found = true;
7120 break;
7121 }
7122 }
7123 }
7124
7125 return found;
7126 }
7127
7128 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7129 {
7130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7131 struct net_device *dev = info->user_ptr[1];
7132 struct cfg80211_ibss_params ibss;
7133 struct wiphy *wiphy;
7134 struct cfg80211_cached_keys *connkeys = NULL;
7135 int err;
7136
7137 memset(&ibss, 0, sizeof(ibss));
7138
7139 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7140 return -EINVAL;
7141
7142 if (!info->attrs[NL80211_ATTR_SSID] ||
7143 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7144 return -EINVAL;
7145
7146 ibss.beacon_interval = 100;
7147
7148 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7149 ibss.beacon_interval =
7150 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7151 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7152 return -EINVAL;
7153 }
7154
7155 if (!rdev->ops->join_ibss)
7156 return -EOPNOTSUPP;
7157
7158 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7159 return -EOPNOTSUPP;
7160
7161 wiphy = &rdev->wiphy;
7162
7163 if (info->attrs[NL80211_ATTR_MAC]) {
7164 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7165
7166 if (!is_valid_ether_addr(ibss.bssid))
7167 return -EINVAL;
7168 }
7169 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7170 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7171
7172 if (info->attrs[NL80211_ATTR_IE]) {
7173 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7174 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7175 }
7176
7177 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7178 if (err)
7179 return err;
7180
7181 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7182 NL80211_IFTYPE_ADHOC))
7183 return -EINVAL;
7184
7185 switch (ibss.chandef.width) {
7186 case NL80211_CHAN_WIDTH_5:
7187 case NL80211_CHAN_WIDTH_10:
7188 case NL80211_CHAN_WIDTH_20_NOHT:
7189 break;
7190 case NL80211_CHAN_WIDTH_20:
7191 case NL80211_CHAN_WIDTH_40:
7192 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7193 break;
7194 default:
7195 return -EINVAL;
7196 }
7197
7198 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7199 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7200
7201 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7202 u8 *rates =
7203 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7204 int n_rates =
7205 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7206 struct ieee80211_supported_band *sband =
7207 wiphy->bands[ibss.chandef.chan->band];
7208
7209 err = ieee80211_get_ratemask(sband, rates, n_rates,
7210 &ibss.basic_rates);
7211 if (err)
7212 return err;
7213 }
7214
7215 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7216 memcpy(&ibss.ht_capa_mask,
7217 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7218 sizeof(ibss.ht_capa_mask));
7219
7220 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7221 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7222 return -EINVAL;
7223 memcpy(&ibss.ht_capa,
7224 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7225 sizeof(ibss.ht_capa));
7226 }
7227
7228 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7229 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7230 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7231 return -EINVAL;
7232
7233 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7234 bool no_ht = false;
7235
7236 connkeys = nl80211_parse_connkeys(rdev,
7237 info->attrs[NL80211_ATTR_KEYS],
7238 &no_ht);
7239 if (IS_ERR(connkeys))
7240 return PTR_ERR(connkeys);
7241
7242 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7243 no_ht) {
7244 kfree(connkeys);
7245 return -EINVAL;
7246 }
7247 }
7248
7249 ibss.control_port =
7250 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7251
7252 ibss.userspace_handles_dfs =
7253 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7254
7255 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7256 if (err)
7257 kzfree(connkeys);
7258 return err;
7259 }
7260
7261 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7262 {
7263 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7264 struct net_device *dev = info->user_ptr[1];
7265
7266 if (!rdev->ops->leave_ibss)
7267 return -EOPNOTSUPP;
7268
7269 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7270 return -EOPNOTSUPP;
7271
7272 return cfg80211_leave_ibss(rdev, dev, false);
7273 }
7274
7275 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7276 {
7277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7278 struct net_device *dev = info->user_ptr[1];
7279 int mcast_rate[IEEE80211_NUM_BANDS];
7280 u32 nla_rate;
7281 int err;
7282
7283 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7284 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7285 return -EOPNOTSUPP;
7286
7287 if (!rdev->ops->set_mcast_rate)
7288 return -EOPNOTSUPP;
7289
7290 memset(mcast_rate, 0, sizeof(mcast_rate));
7291
7292 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7293 return -EINVAL;
7294
7295 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7296 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7297 return -EINVAL;
7298
7299 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7300
7301 return err;
7302 }
7303
7304 static struct sk_buff *
7305 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7306 int approxlen, u32 portid, u32 seq,
7307 enum nl80211_commands cmd,
7308 enum nl80211_attrs attr,
7309 const struct nl80211_vendor_cmd_info *info,
7310 gfp_t gfp)
7311 {
7312 struct sk_buff *skb;
7313 void *hdr;
7314 struct nlattr *data;
7315
7316 skb = nlmsg_new(approxlen + 100, gfp);
7317 if (!skb)
7318 return NULL;
7319
7320 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7321 if (!hdr) {
7322 kfree_skb(skb);
7323 return NULL;
7324 }
7325
7326 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7327 goto nla_put_failure;
7328
7329 if (info) {
7330 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7331 info->vendor_id))
7332 goto nla_put_failure;
7333 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7334 info->subcmd))
7335 goto nla_put_failure;
7336 }
7337
7338 data = nla_nest_start(skb, attr);
7339
7340 ((void **)skb->cb)[0] = rdev;
7341 ((void **)skb->cb)[1] = hdr;
7342 ((void **)skb->cb)[2] = data;
7343
7344 return skb;
7345
7346 nla_put_failure:
7347 kfree_skb(skb);
7348 return NULL;
7349 }
7350
7351 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7352 enum nl80211_commands cmd,
7353 enum nl80211_attrs attr,
7354 int vendor_event_idx,
7355 int approxlen, gfp_t gfp)
7356 {
7357 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7358 const struct nl80211_vendor_cmd_info *info;
7359
7360 switch (cmd) {
7361 case NL80211_CMD_TESTMODE:
7362 if (WARN_ON(vendor_event_idx != -1))
7363 return NULL;
7364 info = NULL;
7365 break;
7366 case NL80211_CMD_VENDOR:
7367 if (WARN_ON(vendor_event_idx < 0 ||
7368 vendor_event_idx >= wiphy->n_vendor_events))
7369 return NULL;
7370 info = &wiphy->vendor_events[vendor_event_idx];
7371 break;
7372 default:
7373 WARN_ON(1);
7374 return NULL;
7375 }
7376
7377 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7378 cmd, attr, info, gfp);
7379 }
7380 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7381
7382 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7383 {
7384 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7385 void *hdr = ((void **)skb->cb)[1];
7386 struct nlattr *data = ((void **)skb->cb)[2];
7387 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7388
7389 /* clear CB data for netlink core to own from now on */
7390 memset(skb->cb, 0, sizeof(skb->cb));
7391
7392 nla_nest_end(skb, data);
7393 genlmsg_end(skb, hdr);
7394
7395 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7396 mcgrp = NL80211_MCGRP_VENDOR;
7397
7398 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7399 mcgrp, gfp);
7400 }
7401 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7402
7403 #ifdef CONFIG_NL80211_TESTMODE
7404 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7405 {
7406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7407 struct wireless_dev *wdev =
7408 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7409 int err;
7410
7411 if (!rdev->ops->testmode_cmd)
7412 return -EOPNOTSUPP;
7413
7414 if (IS_ERR(wdev)) {
7415 err = PTR_ERR(wdev);
7416 if (err != -EINVAL)
7417 return err;
7418 wdev = NULL;
7419 } else if (wdev->wiphy != &rdev->wiphy) {
7420 return -EINVAL;
7421 }
7422
7423 if (!info->attrs[NL80211_ATTR_TESTDATA])
7424 return -EINVAL;
7425
7426 rdev->cur_cmd_info = info;
7427 err = rdev_testmode_cmd(rdev, wdev,
7428 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7429 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7430 rdev->cur_cmd_info = NULL;
7431
7432 return err;
7433 }
7434
7435 static int nl80211_testmode_dump(struct sk_buff *skb,
7436 struct netlink_callback *cb)
7437 {
7438 struct cfg80211_registered_device *rdev;
7439 int err;
7440 long phy_idx;
7441 void *data = NULL;
7442 int data_len = 0;
7443
7444 rtnl_lock();
7445
7446 if (cb->args[0]) {
7447 /*
7448 * 0 is a valid index, but not valid for args[0],
7449 * so we need to offset by 1.
7450 */
7451 phy_idx = cb->args[0] - 1;
7452 } else {
7453 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7454 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7455 nl80211_policy);
7456 if (err)
7457 goto out_err;
7458
7459 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7460 nl80211_fam.attrbuf);
7461 if (IS_ERR(rdev)) {
7462 err = PTR_ERR(rdev);
7463 goto out_err;
7464 }
7465 phy_idx = rdev->wiphy_idx;
7466 rdev = NULL;
7467
7468 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7469 cb->args[1] =
7470 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7471 }
7472
7473 if (cb->args[1]) {
7474 data = nla_data((void *)cb->args[1]);
7475 data_len = nla_len((void *)cb->args[1]);
7476 }
7477
7478 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7479 if (!rdev) {
7480 err = -ENOENT;
7481 goto out_err;
7482 }
7483
7484 if (!rdev->ops->testmode_dump) {
7485 err = -EOPNOTSUPP;
7486 goto out_err;
7487 }
7488
7489 while (1) {
7490 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7491 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7492 NL80211_CMD_TESTMODE);
7493 struct nlattr *tmdata;
7494
7495 if (!hdr)
7496 break;
7497
7498 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7499 genlmsg_cancel(skb, hdr);
7500 break;
7501 }
7502
7503 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7504 if (!tmdata) {
7505 genlmsg_cancel(skb, hdr);
7506 break;
7507 }
7508 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7509 nla_nest_end(skb, tmdata);
7510
7511 if (err == -ENOBUFS || err == -ENOENT) {
7512 genlmsg_cancel(skb, hdr);
7513 break;
7514 } else if (err) {
7515 genlmsg_cancel(skb, hdr);
7516 goto out_err;
7517 }
7518
7519 genlmsg_end(skb, hdr);
7520 }
7521
7522 err = skb->len;
7523 /* see above */
7524 cb->args[0] = phy_idx + 1;
7525 out_err:
7526 rtnl_unlock();
7527 return err;
7528 }
7529 #endif
7530
7531 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7532 {
7533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7534 struct net_device *dev = info->user_ptr[1];
7535 struct cfg80211_connect_params connect;
7536 struct wiphy *wiphy;
7537 struct cfg80211_cached_keys *connkeys = NULL;
7538 int err;
7539
7540 memset(&connect, 0, sizeof(connect));
7541
7542 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7543 return -EINVAL;
7544
7545 if (!info->attrs[NL80211_ATTR_SSID] ||
7546 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7547 return -EINVAL;
7548
7549 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7550 connect.auth_type =
7551 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7552 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7553 NL80211_CMD_CONNECT))
7554 return -EINVAL;
7555 } else
7556 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7557
7558 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7559
7560 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7561 NL80211_MAX_NR_CIPHER_SUITES);
7562 if (err)
7563 return err;
7564
7565 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7566 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7567 return -EOPNOTSUPP;
7568
7569 wiphy = &rdev->wiphy;
7570
7571 connect.bg_scan_period = -1;
7572 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7573 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7574 connect.bg_scan_period =
7575 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7576 }
7577
7578 if (info->attrs[NL80211_ATTR_MAC])
7579 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7580 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7581 connect.bssid_hint =
7582 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7583 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7584 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7585
7586 if (info->attrs[NL80211_ATTR_IE]) {
7587 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7588 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7589 }
7590
7591 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7592 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7593 if (connect.mfp != NL80211_MFP_REQUIRED &&
7594 connect.mfp != NL80211_MFP_NO)
7595 return -EINVAL;
7596 } else {
7597 connect.mfp = NL80211_MFP_NO;
7598 }
7599
7600 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7601 connect.channel = nl80211_get_valid_chan(
7602 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7603 if (!connect.channel)
7604 return -EINVAL;
7605 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7606 connect.channel_hint = nl80211_get_valid_chan(
7607 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7608 if (!connect.channel_hint)
7609 return -EINVAL;
7610 }
7611
7612 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7613 connkeys = nl80211_parse_connkeys(rdev,
7614 info->attrs[NL80211_ATTR_KEYS], NULL);
7615 if (IS_ERR(connkeys))
7616 return PTR_ERR(connkeys);
7617 }
7618
7619 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7620 connect.flags |= ASSOC_REQ_DISABLE_HT;
7621
7622 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7623 memcpy(&connect.ht_capa_mask,
7624 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7625 sizeof(connect.ht_capa_mask));
7626
7627 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7628 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7629 kzfree(connkeys);
7630 return -EINVAL;
7631 }
7632 memcpy(&connect.ht_capa,
7633 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7634 sizeof(connect.ht_capa));
7635 }
7636
7637 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7638 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7639
7640 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7641 memcpy(&connect.vht_capa_mask,
7642 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7643 sizeof(connect.vht_capa_mask));
7644
7645 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7646 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7647 kzfree(connkeys);
7648 return -EINVAL;
7649 }
7650 memcpy(&connect.vht_capa,
7651 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7652 sizeof(connect.vht_capa));
7653 }
7654
7655 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7656 if (!(rdev->wiphy.features &
7657 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7658 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7659 return -EINVAL;
7660 connect.flags |= ASSOC_REQ_USE_RRM;
7661 }
7662
7663 wdev_lock(dev->ieee80211_ptr);
7664 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7665 wdev_unlock(dev->ieee80211_ptr);
7666 if (err)
7667 kzfree(connkeys);
7668 return err;
7669 }
7670
7671 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7672 {
7673 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7674 struct net_device *dev = info->user_ptr[1];
7675 u16 reason;
7676 int ret;
7677
7678 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7679 reason = WLAN_REASON_DEAUTH_LEAVING;
7680 else
7681 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7682
7683 if (reason == 0)
7684 return -EINVAL;
7685
7686 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7687 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7688 return -EOPNOTSUPP;
7689
7690 wdev_lock(dev->ieee80211_ptr);
7691 ret = cfg80211_disconnect(rdev, dev, reason, true);
7692 wdev_unlock(dev->ieee80211_ptr);
7693 return ret;
7694 }
7695
7696 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7697 {
7698 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7699 struct net *net;
7700 int err;
7701 u32 pid;
7702
7703 if (!info->attrs[NL80211_ATTR_PID])
7704 return -EINVAL;
7705
7706 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7707
7708 net = get_net_ns_by_pid(pid);
7709 if (IS_ERR(net))
7710 return PTR_ERR(net);
7711
7712 err = 0;
7713
7714 /* check if anything to do */
7715 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7716 err = cfg80211_switch_netns(rdev, net);
7717
7718 put_net(net);
7719 return err;
7720 }
7721
7722 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7723 {
7724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7725 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7726 struct cfg80211_pmksa *pmksa) = NULL;
7727 struct net_device *dev = info->user_ptr[1];
7728 struct cfg80211_pmksa pmksa;
7729
7730 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7731
7732 if (!info->attrs[NL80211_ATTR_MAC])
7733 return -EINVAL;
7734
7735 if (!info->attrs[NL80211_ATTR_PMKID])
7736 return -EINVAL;
7737
7738 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7739 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7740
7741 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7742 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7743 return -EOPNOTSUPP;
7744
7745 switch (info->genlhdr->cmd) {
7746 case NL80211_CMD_SET_PMKSA:
7747 rdev_ops = rdev->ops->set_pmksa;
7748 break;
7749 case NL80211_CMD_DEL_PMKSA:
7750 rdev_ops = rdev->ops->del_pmksa;
7751 break;
7752 default:
7753 WARN_ON(1);
7754 break;
7755 }
7756
7757 if (!rdev_ops)
7758 return -EOPNOTSUPP;
7759
7760 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7761 }
7762
7763 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7764 {
7765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7766 struct net_device *dev = info->user_ptr[1];
7767
7768 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7769 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7770 return -EOPNOTSUPP;
7771
7772 if (!rdev->ops->flush_pmksa)
7773 return -EOPNOTSUPP;
7774
7775 return rdev_flush_pmksa(rdev, dev);
7776 }
7777
7778 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7779 {
7780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7781 struct net_device *dev = info->user_ptr[1];
7782 u8 action_code, dialog_token;
7783 u32 peer_capability = 0;
7784 u16 status_code;
7785 u8 *peer;
7786 bool initiator;
7787
7788 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7789 !rdev->ops->tdls_mgmt)
7790 return -EOPNOTSUPP;
7791
7792 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7793 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7794 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7795 !info->attrs[NL80211_ATTR_IE] ||
7796 !info->attrs[NL80211_ATTR_MAC])
7797 return -EINVAL;
7798
7799 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7800 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7801 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7802 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7803 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7804 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7805 peer_capability =
7806 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7807
7808 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7809 dialog_token, status_code, peer_capability,
7810 initiator,
7811 nla_data(info->attrs[NL80211_ATTR_IE]),
7812 nla_len(info->attrs[NL80211_ATTR_IE]));
7813 }
7814
7815 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7816 {
7817 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7818 struct net_device *dev = info->user_ptr[1];
7819 enum nl80211_tdls_operation operation;
7820 u8 *peer;
7821
7822 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7823 !rdev->ops->tdls_oper)
7824 return -EOPNOTSUPP;
7825
7826 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7827 !info->attrs[NL80211_ATTR_MAC])
7828 return -EINVAL;
7829
7830 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7831 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7832
7833 return rdev_tdls_oper(rdev, dev, peer, operation);
7834 }
7835
7836 static int nl80211_remain_on_channel(struct sk_buff *skb,
7837 struct genl_info *info)
7838 {
7839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7840 struct wireless_dev *wdev = info->user_ptr[1];
7841 struct cfg80211_chan_def chandef;
7842 struct sk_buff *msg;
7843 void *hdr;
7844 u64 cookie;
7845 u32 duration;
7846 int err;
7847
7848 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7849 !info->attrs[NL80211_ATTR_DURATION])
7850 return -EINVAL;
7851
7852 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7853
7854 if (!rdev->ops->remain_on_channel ||
7855 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7856 return -EOPNOTSUPP;
7857
7858 /*
7859 * We should be on that channel for at least a minimum amount of
7860 * time (10ms) but no longer than the driver supports.
7861 */
7862 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7863 duration > rdev->wiphy.max_remain_on_channel_duration)
7864 return -EINVAL;
7865
7866 err = nl80211_parse_chandef(rdev, info, &chandef);
7867 if (err)
7868 return err;
7869
7870 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7871 if (!msg)
7872 return -ENOMEM;
7873
7874 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7875 NL80211_CMD_REMAIN_ON_CHANNEL);
7876 if (!hdr) {
7877 err = -ENOBUFS;
7878 goto free_msg;
7879 }
7880
7881 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7882 duration, &cookie);
7883
7884 if (err)
7885 goto free_msg;
7886
7887 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7888 goto nla_put_failure;
7889
7890 genlmsg_end(msg, hdr);
7891
7892 return genlmsg_reply(msg, info);
7893
7894 nla_put_failure:
7895 err = -ENOBUFS;
7896 free_msg:
7897 nlmsg_free(msg);
7898 return err;
7899 }
7900
7901 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7902 struct genl_info *info)
7903 {
7904 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7905 struct wireless_dev *wdev = info->user_ptr[1];
7906 u64 cookie;
7907
7908 if (!info->attrs[NL80211_ATTR_COOKIE])
7909 return -EINVAL;
7910
7911 if (!rdev->ops->cancel_remain_on_channel)
7912 return -EOPNOTSUPP;
7913
7914 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7915
7916 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7917 }
7918
7919 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7920 u8 *rates, u8 rates_len)
7921 {
7922 u8 i;
7923 u32 mask = 0;
7924
7925 for (i = 0; i < rates_len; i++) {
7926 int rate = (rates[i] & 0x7f) * 5;
7927 int ridx;
7928 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7929 struct ieee80211_rate *srate =
7930 &sband->bitrates[ridx];
7931 if (rate == srate->bitrate) {
7932 mask |= 1 << ridx;
7933 break;
7934 }
7935 }
7936 if (ridx == sband->n_bitrates)
7937 return 0; /* rate not found */
7938 }
7939
7940 return mask;
7941 }
7942
7943 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7944 u8 *rates, u8 rates_len,
7945 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7946 {
7947 u8 i;
7948
7949 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7950
7951 for (i = 0; i < rates_len; i++) {
7952 int ridx, rbit;
7953
7954 ridx = rates[i] / 8;
7955 rbit = BIT(rates[i] % 8);
7956
7957 /* check validity */
7958 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7959 return false;
7960
7961 /* check availability */
7962 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7963 mcs[ridx] |= rbit;
7964 else
7965 return false;
7966 }
7967
7968 return true;
7969 }
7970
7971 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7972 {
7973 u16 mcs_mask = 0;
7974
7975 switch (vht_mcs_map) {
7976 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7977 break;
7978 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7979 mcs_mask = 0x00FF;
7980 break;
7981 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7982 mcs_mask = 0x01FF;
7983 break;
7984 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7985 mcs_mask = 0x03FF;
7986 break;
7987 default:
7988 break;
7989 }
7990
7991 return mcs_mask;
7992 }
7993
7994 static void vht_build_mcs_mask(u16 vht_mcs_map,
7995 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7996 {
7997 u8 nss;
7998
7999 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8000 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8001 vht_mcs_map >>= 2;
8002 }
8003 }
8004
8005 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8006 struct nl80211_txrate_vht *txrate,
8007 u16 mcs[NL80211_VHT_NSS_MAX])
8008 {
8009 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8010 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8011 u8 i;
8012
8013 if (!sband->vht_cap.vht_supported)
8014 return false;
8015
8016 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8017
8018 /* Build vht_mcs_mask from VHT capabilities */
8019 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8020
8021 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8022 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8023 mcs[i] = txrate->mcs[i];
8024 else
8025 return false;
8026 }
8027
8028 return true;
8029 }
8030
8031 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8032 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8033 .len = NL80211_MAX_SUPP_RATES },
8034 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8035 .len = NL80211_MAX_SUPP_HT_RATES },
8036 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8037 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8038 };
8039
8040 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8041 struct genl_info *info)
8042 {
8043 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8045 struct cfg80211_bitrate_mask mask;
8046 int rem, i;
8047 struct net_device *dev = info->user_ptr[1];
8048 struct nlattr *tx_rates;
8049 struct ieee80211_supported_band *sband;
8050 u16 vht_tx_mcs_map;
8051
8052 if (!rdev->ops->set_bitrate_mask)
8053 return -EOPNOTSUPP;
8054
8055 memset(&mask, 0, sizeof(mask));
8056 /* Default to all rates enabled */
8057 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8058 sband = rdev->wiphy.bands[i];
8059
8060 if (!sband)
8061 continue;
8062
8063 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8064 memcpy(mask.control[i].ht_mcs,
8065 sband->ht_cap.mcs.rx_mask,
8066 sizeof(mask.control[i].ht_mcs));
8067
8068 if (!sband->vht_cap.vht_supported)
8069 continue;
8070
8071 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8072 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8073 }
8074
8075 /* if no rates are given set it back to the defaults */
8076 if (!info->attrs[NL80211_ATTR_TX_RATES])
8077 goto out;
8078
8079 /*
8080 * The nested attribute uses enum nl80211_band as the index. This maps
8081 * directly to the enum ieee80211_band values used in cfg80211.
8082 */
8083 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8084 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8085 enum ieee80211_band band = nla_type(tx_rates);
8086 int err;
8087
8088 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8089 return -EINVAL;
8090 sband = rdev->wiphy.bands[band];
8091 if (sband == NULL)
8092 return -EINVAL;
8093 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8094 nla_len(tx_rates), nl80211_txattr_policy);
8095 if (err)
8096 return err;
8097 if (tb[NL80211_TXRATE_LEGACY]) {
8098 mask.control[band].legacy = rateset_to_mask(
8099 sband,
8100 nla_data(tb[NL80211_TXRATE_LEGACY]),
8101 nla_len(tb[NL80211_TXRATE_LEGACY]));
8102 if ((mask.control[band].legacy == 0) &&
8103 nla_len(tb[NL80211_TXRATE_LEGACY]))
8104 return -EINVAL;
8105 }
8106 if (tb[NL80211_TXRATE_HT]) {
8107 if (!ht_rateset_to_mask(
8108 sband,
8109 nla_data(tb[NL80211_TXRATE_HT]),
8110 nla_len(tb[NL80211_TXRATE_HT]),
8111 mask.control[band].ht_mcs))
8112 return -EINVAL;
8113 }
8114 if (tb[NL80211_TXRATE_VHT]) {
8115 if (!vht_set_mcs_mask(
8116 sband,
8117 nla_data(tb[NL80211_TXRATE_VHT]),
8118 mask.control[band].vht_mcs))
8119 return -EINVAL;
8120 }
8121 if (tb[NL80211_TXRATE_GI]) {
8122 mask.control[band].gi =
8123 nla_get_u8(tb[NL80211_TXRATE_GI]);
8124 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8125 return -EINVAL;
8126 }
8127
8128 if (mask.control[band].legacy == 0) {
8129 /* don't allow empty legacy rates if HT or VHT
8130 * are not even supported.
8131 */
8132 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8133 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8134 return -EINVAL;
8135
8136 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8137 if (mask.control[band].ht_mcs[i])
8138 goto out;
8139
8140 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8141 if (mask.control[band].vht_mcs[i])
8142 goto out;
8143
8144 /* legacy and mcs rates may not be both empty */
8145 return -EINVAL;
8146 }
8147 }
8148
8149 out:
8150 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8151 }
8152
8153 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8154 {
8155 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8156 struct wireless_dev *wdev = info->user_ptr[1];
8157 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8158
8159 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8160 return -EINVAL;
8161
8162 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8163 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8164
8165 switch (wdev->iftype) {
8166 case NL80211_IFTYPE_STATION:
8167 case NL80211_IFTYPE_ADHOC:
8168 case NL80211_IFTYPE_P2P_CLIENT:
8169 case NL80211_IFTYPE_AP:
8170 case NL80211_IFTYPE_AP_VLAN:
8171 case NL80211_IFTYPE_MESH_POINT:
8172 case NL80211_IFTYPE_P2P_GO:
8173 case NL80211_IFTYPE_P2P_DEVICE:
8174 break;
8175 default:
8176 return -EOPNOTSUPP;
8177 }
8178
8179 /* not much point in registering if we can't reply */
8180 if (!rdev->ops->mgmt_tx)
8181 return -EOPNOTSUPP;
8182
8183 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8184 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8185 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8186 }
8187
8188 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8189 {
8190 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8191 struct wireless_dev *wdev = info->user_ptr[1];
8192 struct cfg80211_chan_def chandef;
8193 int err;
8194 void *hdr = NULL;
8195 u64 cookie;
8196 struct sk_buff *msg = NULL;
8197 struct cfg80211_mgmt_tx_params params = {
8198 .dont_wait_for_ack =
8199 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8200 };
8201
8202 if (!info->attrs[NL80211_ATTR_FRAME])
8203 return -EINVAL;
8204
8205 if (!rdev->ops->mgmt_tx)
8206 return -EOPNOTSUPP;
8207
8208 switch (wdev->iftype) {
8209 case NL80211_IFTYPE_P2P_DEVICE:
8210 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8211 return -EINVAL;
8212 case NL80211_IFTYPE_STATION:
8213 case NL80211_IFTYPE_ADHOC:
8214 case NL80211_IFTYPE_P2P_CLIENT:
8215 case NL80211_IFTYPE_AP:
8216 case NL80211_IFTYPE_AP_VLAN:
8217 case NL80211_IFTYPE_MESH_POINT:
8218 case NL80211_IFTYPE_P2P_GO:
8219 break;
8220 default:
8221 return -EOPNOTSUPP;
8222 }
8223
8224 if (info->attrs[NL80211_ATTR_DURATION]) {
8225 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8226 return -EINVAL;
8227 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8228
8229 /*
8230 * We should wait on the channel for at least a minimum amount
8231 * of time (10ms) but no longer than the driver supports.
8232 */
8233 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8234 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8235 return -EINVAL;
8236
8237 }
8238
8239 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8240
8241 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8242 return -EINVAL;
8243
8244 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8245
8246 /* get the channel if any has been specified, otherwise pass NULL to
8247 * the driver. The latter will use the current one
8248 */
8249 chandef.chan = NULL;
8250 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8251 err = nl80211_parse_chandef(rdev, info, &chandef);
8252 if (err)
8253 return err;
8254 }
8255
8256 if (!chandef.chan && params.offchan)
8257 return -EINVAL;
8258
8259 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8260 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8261
8262 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8263 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8264 int i;
8265
8266 if (len % sizeof(u16))
8267 return -EINVAL;
8268
8269 params.n_csa_offsets = len / sizeof(u16);
8270 params.csa_offsets =
8271 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8272
8273 /* check that all the offsets fit the frame */
8274 for (i = 0; i < params.n_csa_offsets; i++) {
8275 if (params.csa_offsets[i] >= params.len)
8276 return -EINVAL;
8277 }
8278 }
8279
8280 if (!params.dont_wait_for_ack) {
8281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8282 if (!msg)
8283 return -ENOMEM;
8284
8285 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8286 NL80211_CMD_FRAME);
8287 if (!hdr) {
8288 err = -ENOBUFS;
8289 goto free_msg;
8290 }
8291 }
8292
8293 params.chan = chandef.chan;
8294 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8295 if (err)
8296 goto free_msg;
8297
8298 if (msg) {
8299 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8300 goto nla_put_failure;
8301
8302 genlmsg_end(msg, hdr);
8303 return genlmsg_reply(msg, info);
8304 }
8305
8306 return 0;
8307
8308 nla_put_failure:
8309 err = -ENOBUFS;
8310 free_msg:
8311 nlmsg_free(msg);
8312 return err;
8313 }
8314
8315 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8316 {
8317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8318 struct wireless_dev *wdev = info->user_ptr[1];
8319 u64 cookie;
8320
8321 if (!info->attrs[NL80211_ATTR_COOKIE])
8322 return -EINVAL;
8323
8324 if (!rdev->ops->mgmt_tx_cancel_wait)
8325 return -EOPNOTSUPP;
8326
8327 switch (wdev->iftype) {
8328 case NL80211_IFTYPE_STATION:
8329 case NL80211_IFTYPE_ADHOC:
8330 case NL80211_IFTYPE_P2P_CLIENT:
8331 case NL80211_IFTYPE_AP:
8332 case NL80211_IFTYPE_AP_VLAN:
8333 case NL80211_IFTYPE_P2P_GO:
8334 case NL80211_IFTYPE_P2P_DEVICE:
8335 break;
8336 default:
8337 return -EOPNOTSUPP;
8338 }
8339
8340 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8341
8342 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8343 }
8344
8345 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8346 {
8347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8348 struct wireless_dev *wdev;
8349 struct net_device *dev = info->user_ptr[1];
8350 u8 ps_state;
8351 bool state;
8352 int err;
8353
8354 if (!info->attrs[NL80211_ATTR_PS_STATE])
8355 return -EINVAL;
8356
8357 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8358
8359 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8360 return -EINVAL;
8361
8362 wdev = dev->ieee80211_ptr;
8363
8364 if (!rdev->ops->set_power_mgmt)
8365 return -EOPNOTSUPP;
8366
8367 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8368
8369 if (state == wdev->ps)
8370 return 0;
8371
8372 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8373 if (!err)
8374 wdev->ps = state;
8375 return err;
8376 }
8377
8378 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8379 {
8380 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8381 enum nl80211_ps_state ps_state;
8382 struct wireless_dev *wdev;
8383 struct net_device *dev = info->user_ptr[1];
8384 struct sk_buff *msg;
8385 void *hdr;
8386 int err;
8387
8388 wdev = dev->ieee80211_ptr;
8389
8390 if (!rdev->ops->set_power_mgmt)
8391 return -EOPNOTSUPP;
8392
8393 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8394 if (!msg)
8395 return -ENOMEM;
8396
8397 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8398 NL80211_CMD_GET_POWER_SAVE);
8399 if (!hdr) {
8400 err = -ENOBUFS;
8401 goto free_msg;
8402 }
8403
8404 if (wdev->ps)
8405 ps_state = NL80211_PS_ENABLED;
8406 else
8407 ps_state = NL80211_PS_DISABLED;
8408
8409 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8410 goto nla_put_failure;
8411
8412 genlmsg_end(msg, hdr);
8413 return genlmsg_reply(msg, info);
8414
8415 nla_put_failure:
8416 err = -ENOBUFS;
8417 free_msg:
8418 nlmsg_free(msg);
8419 return err;
8420 }
8421
8422 static const struct nla_policy
8423 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8424 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8425 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8426 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8427 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8428 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8429 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8430 };
8431
8432 static int nl80211_set_cqm_txe(struct genl_info *info,
8433 u32 rate, u32 pkts, u32 intvl)
8434 {
8435 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8436 struct net_device *dev = info->user_ptr[1];
8437 struct wireless_dev *wdev = dev->ieee80211_ptr;
8438
8439 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8440 return -EINVAL;
8441
8442 if (!rdev->ops->set_cqm_txe_config)
8443 return -EOPNOTSUPP;
8444
8445 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8446 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8447 return -EOPNOTSUPP;
8448
8449 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8450 }
8451
8452 static int nl80211_set_cqm_rssi(struct genl_info *info,
8453 s32 threshold, u32 hysteresis)
8454 {
8455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8456 struct net_device *dev = info->user_ptr[1];
8457 struct wireless_dev *wdev = dev->ieee80211_ptr;
8458
8459 if (threshold > 0)
8460 return -EINVAL;
8461
8462 /* disabling - hysteresis should also be zero then */
8463 if (threshold == 0)
8464 hysteresis = 0;
8465
8466 if (!rdev->ops->set_cqm_rssi_config)
8467 return -EOPNOTSUPP;
8468
8469 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8470 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8471 return -EOPNOTSUPP;
8472
8473 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8474 }
8475
8476 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8477 {
8478 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8479 struct nlattr *cqm;
8480 int err;
8481
8482 cqm = info->attrs[NL80211_ATTR_CQM];
8483 if (!cqm)
8484 return -EINVAL;
8485
8486 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8487 nl80211_attr_cqm_policy);
8488 if (err)
8489 return err;
8490
8491 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8492 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8493 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8494 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8495
8496 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8497 }
8498
8499 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8500 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8501 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8502 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8503 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8504 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8505
8506 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8507 }
8508
8509 return -EINVAL;
8510 }
8511
8512 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8513 {
8514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8515 struct net_device *dev = info->user_ptr[1];
8516 struct ocb_setup setup = {};
8517 int err;
8518
8519 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8520 if (err)
8521 return err;
8522
8523 return cfg80211_join_ocb(rdev, dev, &setup);
8524 }
8525
8526 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8527 {
8528 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8529 struct net_device *dev = info->user_ptr[1];
8530
8531 return cfg80211_leave_ocb(rdev, dev);
8532 }
8533
8534 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8535 {
8536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8537 struct net_device *dev = info->user_ptr[1];
8538 struct mesh_config cfg;
8539 struct mesh_setup setup;
8540 int err;
8541
8542 /* start with default */
8543 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8544 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8545
8546 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8547 /* and parse parameters if given */
8548 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8549 if (err)
8550 return err;
8551 }
8552
8553 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8554 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8555 return -EINVAL;
8556
8557 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8558 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8559
8560 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8561 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8562 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8563 return -EINVAL;
8564
8565 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8566 setup.beacon_interval =
8567 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8568 if (setup.beacon_interval < 10 ||
8569 setup.beacon_interval > 10000)
8570 return -EINVAL;
8571 }
8572
8573 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8574 setup.dtim_period =
8575 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8576 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8577 return -EINVAL;
8578 }
8579
8580 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8581 /* parse additional setup parameters if given */
8582 err = nl80211_parse_mesh_setup(info, &setup);
8583 if (err)
8584 return err;
8585 }
8586
8587 if (setup.user_mpm)
8588 cfg.auto_open_plinks = false;
8589
8590 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8591 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8592 if (err)
8593 return err;
8594 } else {
8595 /* cfg80211_join_mesh() will sort it out */
8596 setup.chandef.chan = NULL;
8597 }
8598
8599 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8600 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8601 int n_rates =
8602 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8603 struct ieee80211_supported_band *sband;
8604
8605 if (!setup.chandef.chan)
8606 return -EINVAL;
8607
8608 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8609
8610 err = ieee80211_get_ratemask(sband, rates, n_rates,
8611 &setup.basic_rates);
8612 if (err)
8613 return err;
8614 }
8615
8616 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8617 }
8618
8619 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8620 {
8621 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8622 struct net_device *dev = info->user_ptr[1];
8623
8624 return cfg80211_leave_mesh(rdev, dev);
8625 }
8626
8627 #ifdef CONFIG_PM
8628 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8629 struct cfg80211_registered_device *rdev)
8630 {
8631 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8632 struct nlattr *nl_pats, *nl_pat;
8633 int i, pat_len;
8634
8635 if (!wowlan->n_patterns)
8636 return 0;
8637
8638 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8639 if (!nl_pats)
8640 return -ENOBUFS;
8641
8642 for (i = 0; i < wowlan->n_patterns; i++) {
8643 nl_pat = nla_nest_start(msg, i + 1);
8644 if (!nl_pat)
8645 return -ENOBUFS;
8646 pat_len = wowlan->patterns[i].pattern_len;
8647 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8648 wowlan->patterns[i].mask) ||
8649 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8650 wowlan->patterns[i].pattern) ||
8651 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8652 wowlan->patterns[i].pkt_offset))
8653 return -ENOBUFS;
8654 nla_nest_end(msg, nl_pat);
8655 }
8656 nla_nest_end(msg, nl_pats);
8657
8658 return 0;
8659 }
8660
8661 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8662 struct cfg80211_wowlan_tcp *tcp)
8663 {
8664 struct nlattr *nl_tcp;
8665
8666 if (!tcp)
8667 return 0;
8668
8669 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8670 if (!nl_tcp)
8671 return -ENOBUFS;
8672
8673 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8674 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8675 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8676 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8677 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8678 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8679 tcp->payload_len, tcp->payload) ||
8680 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8681 tcp->data_interval) ||
8682 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8683 tcp->wake_len, tcp->wake_data) ||
8684 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8685 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8686 return -ENOBUFS;
8687
8688 if (tcp->payload_seq.len &&
8689 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8690 sizeof(tcp->payload_seq), &tcp->payload_seq))
8691 return -ENOBUFS;
8692
8693 if (tcp->payload_tok.len &&
8694 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8695 sizeof(tcp->payload_tok) + tcp->tokens_size,
8696 &tcp->payload_tok))
8697 return -ENOBUFS;
8698
8699 nla_nest_end(msg, nl_tcp);
8700
8701 return 0;
8702 }
8703
8704 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8705 {
8706 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8707 struct sk_buff *msg;
8708 void *hdr;
8709 u32 size = NLMSG_DEFAULT_SIZE;
8710
8711 if (!rdev->wiphy.wowlan)
8712 return -EOPNOTSUPP;
8713
8714 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8715 /* adjust size to have room for all the data */
8716 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8717 rdev->wiphy.wowlan_config->tcp->payload_len +
8718 rdev->wiphy.wowlan_config->tcp->wake_len +
8719 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8720 }
8721
8722 msg = nlmsg_new(size, GFP_KERNEL);
8723 if (!msg)
8724 return -ENOMEM;
8725
8726 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8727 NL80211_CMD_GET_WOWLAN);
8728 if (!hdr)
8729 goto nla_put_failure;
8730
8731 if (rdev->wiphy.wowlan_config) {
8732 struct nlattr *nl_wowlan;
8733
8734 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8735 if (!nl_wowlan)
8736 goto nla_put_failure;
8737
8738 if ((rdev->wiphy.wowlan_config->any &&
8739 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8740 (rdev->wiphy.wowlan_config->disconnect &&
8741 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8742 (rdev->wiphy.wowlan_config->magic_pkt &&
8743 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8744 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8745 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8746 (rdev->wiphy.wowlan_config->eap_identity_req &&
8747 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8748 (rdev->wiphy.wowlan_config->four_way_handshake &&
8749 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8750 (rdev->wiphy.wowlan_config->rfkill_release &&
8751 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8752 goto nla_put_failure;
8753
8754 if (nl80211_send_wowlan_patterns(msg, rdev))
8755 goto nla_put_failure;
8756
8757 if (nl80211_send_wowlan_tcp(msg,
8758 rdev->wiphy.wowlan_config->tcp))
8759 goto nla_put_failure;
8760
8761 nla_nest_end(msg, nl_wowlan);
8762 }
8763
8764 genlmsg_end(msg, hdr);
8765 return genlmsg_reply(msg, info);
8766
8767 nla_put_failure:
8768 nlmsg_free(msg);
8769 return -ENOBUFS;
8770 }
8771
8772 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8773 struct nlattr *attr,
8774 struct cfg80211_wowlan *trig)
8775 {
8776 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8777 struct cfg80211_wowlan_tcp *cfg;
8778 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8779 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8780 u32 size;
8781 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8782 int err, port;
8783
8784 if (!rdev->wiphy.wowlan->tcp)
8785 return -EINVAL;
8786
8787 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8788 nla_data(attr), nla_len(attr),
8789 nl80211_wowlan_tcp_policy);
8790 if (err)
8791 return err;
8792
8793 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8794 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8795 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8796 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8797 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8798 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8799 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8800 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8801 return -EINVAL;
8802
8803 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8804 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8805 return -EINVAL;
8806
8807 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8808 rdev->wiphy.wowlan->tcp->data_interval_max ||
8809 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8810 return -EINVAL;
8811
8812 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8813 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8814 return -EINVAL;
8815
8816 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8817 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8818 return -EINVAL;
8819
8820 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8821 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8822
8823 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8824 tokens_size = tokln - sizeof(*tok);
8825
8826 if (!tok->len || tokens_size % tok->len)
8827 return -EINVAL;
8828 if (!rdev->wiphy.wowlan->tcp->tok)
8829 return -EINVAL;
8830 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8831 return -EINVAL;
8832 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8833 return -EINVAL;
8834 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8835 return -EINVAL;
8836 if (tok->offset + tok->len > data_size)
8837 return -EINVAL;
8838 }
8839
8840 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8841 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8842 if (!rdev->wiphy.wowlan->tcp->seq)
8843 return -EINVAL;
8844 if (seq->len == 0 || seq->len > 4)
8845 return -EINVAL;
8846 if (seq->len + seq->offset > data_size)
8847 return -EINVAL;
8848 }
8849
8850 size = sizeof(*cfg);
8851 size += data_size;
8852 size += wake_size + wake_mask_size;
8853 size += tokens_size;
8854
8855 cfg = kzalloc(size, GFP_KERNEL);
8856 if (!cfg)
8857 return -ENOMEM;
8858 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8859 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8860 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8861 ETH_ALEN);
8862 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8863 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8864 else
8865 port = 0;
8866 #ifdef CONFIG_INET
8867 /* allocate a socket and port for it and use it */
8868 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8869 IPPROTO_TCP, &cfg->sock, 1);
8870 if (err) {
8871 kfree(cfg);
8872 return err;
8873 }
8874 if (inet_csk_get_port(cfg->sock->sk, port)) {
8875 sock_release(cfg->sock);
8876 kfree(cfg);
8877 return -EADDRINUSE;
8878 }
8879 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8880 #else
8881 if (!port) {
8882 kfree(cfg);
8883 return -EINVAL;
8884 }
8885 cfg->src_port = port;
8886 #endif
8887
8888 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8889 cfg->payload_len = data_size;
8890 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8891 memcpy((void *)cfg->payload,
8892 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8893 data_size);
8894 if (seq)
8895 cfg->payload_seq = *seq;
8896 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8897 cfg->wake_len = wake_size;
8898 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8899 memcpy((void *)cfg->wake_data,
8900 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8901 wake_size);
8902 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8903 data_size + wake_size;
8904 memcpy((void *)cfg->wake_mask,
8905 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8906 wake_mask_size);
8907 if (tok) {
8908 cfg->tokens_size = tokens_size;
8909 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8910 }
8911
8912 trig->tcp = cfg;
8913
8914 return 0;
8915 }
8916
8917 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8918 const struct wiphy_wowlan_support *wowlan,
8919 struct nlattr *attr,
8920 struct cfg80211_wowlan *trig)
8921 {
8922 struct nlattr **tb;
8923 int err;
8924
8925 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8926 if (!tb)
8927 return -ENOMEM;
8928
8929 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8930 err = -EOPNOTSUPP;
8931 goto out;
8932 }
8933
8934 err = nla_parse(tb, NL80211_ATTR_MAX,
8935 nla_data(attr), nla_len(attr),
8936 nl80211_policy);
8937 if (err)
8938 goto out;
8939
8940 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8941 err = PTR_ERR_OR_ZERO(trig->nd_config);
8942 if (err)
8943 trig->nd_config = NULL;
8944
8945 out:
8946 kfree(tb);
8947 return err;
8948 }
8949
8950 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8951 {
8952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8953 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8954 struct cfg80211_wowlan new_triggers = {};
8955 struct cfg80211_wowlan *ntrig;
8956 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8957 int err, i;
8958 bool prev_enabled = rdev->wiphy.wowlan_config;
8959
8960 if (!wowlan)
8961 return -EOPNOTSUPP;
8962
8963 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8964 cfg80211_rdev_free_wowlan(rdev);
8965 rdev->wiphy.wowlan_config = NULL;
8966 goto set_wakeup;
8967 }
8968
8969 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8970 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8971 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8972 nl80211_wowlan_policy);
8973 if (err)
8974 return err;
8975
8976 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8977 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8978 return -EINVAL;
8979 new_triggers.any = true;
8980 }
8981
8982 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8983 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8984 return -EINVAL;
8985 new_triggers.disconnect = true;
8986 }
8987
8988 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8989 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8990 return -EINVAL;
8991 new_triggers.magic_pkt = true;
8992 }
8993
8994 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8995 return -EINVAL;
8996
8997 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8998 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8999 return -EINVAL;
9000 new_triggers.gtk_rekey_failure = true;
9001 }
9002
9003 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9004 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9005 return -EINVAL;
9006 new_triggers.eap_identity_req = true;
9007 }
9008
9009 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9010 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9011 return -EINVAL;
9012 new_triggers.four_way_handshake = true;
9013 }
9014
9015 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9016 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9017 return -EINVAL;
9018 new_triggers.rfkill_release = true;
9019 }
9020
9021 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9022 struct nlattr *pat;
9023 int n_patterns = 0;
9024 int rem, pat_len, mask_len, pkt_offset;
9025 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9026
9027 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9028 rem)
9029 n_patterns++;
9030 if (n_patterns > wowlan->n_patterns)
9031 return -EINVAL;
9032
9033 new_triggers.patterns = kcalloc(n_patterns,
9034 sizeof(new_triggers.patterns[0]),
9035 GFP_KERNEL);
9036 if (!new_triggers.patterns)
9037 return -ENOMEM;
9038
9039 new_triggers.n_patterns = n_patterns;
9040 i = 0;
9041
9042 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9043 rem) {
9044 u8 *mask_pat;
9045
9046 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9047 nla_len(pat), NULL);
9048 err = -EINVAL;
9049 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9050 !pat_tb[NL80211_PKTPAT_PATTERN])
9051 goto error;
9052 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9053 mask_len = DIV_ROUND_UP(pat_len, 8);
9054 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9055 goto error;
9056 if (pat_len > wowlan->pattern_max_len ||
9057 pat_len < wowlan->pattern_min_len)
9058 goto error;
9059
9060 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9061 pkt_offset = 0;
9062 else
9063 pkt_offset = nla_get_u32(
9064 pat_tb[NL80211_PKTPAT_OFFSET]);
9065 if (pkt_offset > wowlan->max_pkt_offset)
9066 goto error;
9067 new_triggers.patterns[i].pkt_offset = pkt_offset;
9068
9069 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9070 if (!mask_pat) {
9071 err = -ENOMEM;
9072 goto error;
9073 }
9074 new_triggers.patterns[i].mask = mask_pat;
9075 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9076 mask_len);
9077 mask_pat += mask_len;
9078 new_triggers.patterns[i].pattern = mask_pat;
9079 new_triggers.patterns[i].pattern_len = pat_len;
9080 memcpy(mask_pat,
9081 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9082 pat_len);
9083 i++;
9084 }
9085 }
9086
9087 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9088 err = nl80211_parse_wowlan_tcp(
9089 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9090 &new_triggers);
9091 if (err)
9092 goto error;
9093 }
9094
9095 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9096 err = nl80211_parse_wowlan_nd(
9097 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9098 &new_triggers);
9099 if (err)
9100 goto error;
9101 }
9102
9103 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9104 if (!ntrig) {
9105 err = -ENOMEM;
9106 goto error;
9107 }
9108 cfg80211_rdev_free_wowlan(rdev);
9109 rdev->wiphy.wowlan_config = ntrig;
9110
9111 set_wakeup:
9112 if (rdev->ops->set_wakeup &&
9113 prev_enabled != !!rdev->wiphy.wowlan_config)
9114 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9115
9116 return 0;
9117 error:
9118 for (i = 0; i < new_triggers.n_patterns; i++)
9119 kfree(new_triggers.patterns[i].mask);
9120 kfree(new_triggers.patterns);
9121 if (new_triggers.tcp && new_triggers.tcp->sock)
9122 sock_release(new_triggers.tcp->sock);
9123 kfree(new_triggers.tcp);
9124 return err;
9125 }
9126 #endif
9127
9128 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9129 struct cfg80211_registered_device *rdev)
9130 {
9131 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9132 int i, j, pat_len;
9133 struct cfg80211_coalesce_rules *rule;
9134
9135 if (!rdev->coalesce->n_rules)
9136 return 0;
9137
9138 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9139 if (!nl_rules)
9140 return -ENOBUFS;
9141
9142 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9143 nl_rule = nla_nest_start(msg, i + 1);
9144 if (!nl_rule)
9145 return -ENOBUFS;
9146
9147 rule = &rdev->coalesce->rules[i];
9148 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9149 rule->delay))
9150 return -ENOBUFS;
9151
9152 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9153 rule->condition))
9154 return -ENOBUFS;
9155
9156 nl_pats = nla_nest_start(msg,
9157 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9158 if (!nl_pats)
9159 return -ENOBUFS;
9160
9161 for (j = 0; j < rule->n_patterns; j++) {
9162 nl_pat = nla_nest_start(msg, j + 1);
9163 if (!nl_pat)
9164 return -ENOBUFS;
9165 pat_len = rule->patterns[j].pattern_len;
9166 if (nla_put(msg, NL80211_PKTPAT_MASK,
9167 DIV_ROUND_UP(pat_len, 8),
9168 rule->patterns[j].mask) ||
9169 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9170 rule->patterns[j].pattern) ||
9171 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9172 rule->patterns[j].pkt_offset))
9173 return -ENOBUFS;
9174 nla_nest_end(msg, nl_pat);
9175 }
9176 nla_nest_end(msg, nl_pats);
9177 nla_nest_end(msg, nl_rule);
9178 }
9179 nla_nest_end(msg, nl_rules);
9180
9181 return 0;
9182 }
9183
9184 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9185 {
9186 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9187 struct sk_buff *msg;
9188 void *hdr;
9189
9190 if (!rdev->wiphy.coalesce)
9191 return -EOPNOTSUPP;
9192
9193 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9194 if (!msg)
9195 return -ENOMEM;
9196
9197 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9198 NL80211_CMD_GET_COALESCE);
9199 if (!hdr)
9200 goto nla_put_failure;
9201
9202 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9203 goto nla_put_failure;
9204
9205 genlmsg_end(msg, hdr);
9206 return genlmsg_reply(msg, info);
9207
9208 nla_put_failure:
9209 nlmsg_free(msg);
9210 return -ENOBUFS;
9211 }
9212
9213 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9214 {
9215 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9216 int i, j;
9217 struct cfg80211_coalesce_rules *rule;
9218
9219 if (!coalesce)
9220 return;
9221
9222 for (i = 0; i < coalesce->n_rules; i++) {
9223 rule = &coalesce->rules[i];
9224 for (j = 0; j < rule->n_patterns; j++)
9225 kfree(rule->patterns[j].mask);
9226 kfree(rule->patterns);
9227 }
9228 kfree(coalesce->rules);
9229 kfree(coalesce);
9230 rdev->coalesce = NULL;
9231 }
9232
9233 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9234 struct nlattr *rule,
9235 struct cfg80211_coalesce_rules *new_rule)
9236 {
9237 int err, i;
9238 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9239 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9240 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9241 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9242
9243 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9244 nla_len(rule), nl80211_coalesce_policy);
9245 if (err)
9246 return err;
9247
9248 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9249 new_rule->delay =
9250 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9251 if (new_rule->delay > coalesce->max_delay)
9252 return -EINVAL;
9253
9254 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9255 new_rule->condition =
9256 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9257 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9258 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9259 return -EINVAL;
9260
9261 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9262 return -EINVAL;
9263
9264 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9265 rem)
9266 n_patterns++;
9267 if (n_patterns > coalesce->n_patterns)
9268 return -EINVAL;
9269
9270 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9271 GFP_KERNEL);
9272 if (!new_rule->patterns)
9273 return -ENOMEM;
9274
9275 new_rule->n_patterns = n_patterns;
9276 i = 0;
9277
9278 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9279 rem) {
9280 u8 *mask_pat;
9281
9282 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9283 nla_len(pat), NULL);
9284 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9285 !pat_tb[NL80211_PKTPAT_PATTERN])
9286 return -EINVAL;
9287 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9288 mask_len = DIV_ROUND_UP(pat_len, 8);
9289 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9290 return -EINVAL;
9291 if (pat_len > coalesce->pattern_max_len ||
9292 pat_len < coalesce->pattern_min_len)
9293 return -EINVAL;
9294
9295 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9296 pkt_offset = 0;
9297 else
9298 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9299 if (pkt_offset > coalesce->max_pkt_offset)
9300 return -EINVAL;
9301 new_rule->patterns[i].pkt_offset = pkt_offset;
9302
9303 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9304 if (!mask_pat)
9305 return -ENOMEM;
9306
9307 new_rule->patterns[i].mask = mask_pat;
9308 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9309 mask_len);
9310
9311 mask_pat += mask_len;
9312 new_rule->patterns[i].pattern = mask_pat;
9313 new_rule->patterns[i].pattern_len = pat_len;
9314 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9315 pat_len);
9316 i++;
9317 }
9318
9319 return 0;
9320 }
9321
9322 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9323 {
9324 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9325 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9326 struct cfg80211_coalesce new_coalesce = {};
9327 struct cfg80211_coalesce *n_coalesce;
9328 int err, rem_rule, n_rules = 0, i, j;
9329 struct nlattr *rule;
9330 struct cfg80211_coalesce_rules *tmp_rule;
9331
9332 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9333 return -EOPNOTSUPP;
9334
9335 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9336 cfg80211_rdev_free_coalesce(rdev);
9337 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9338 return 0;
9339 }
9340
9341 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9342 rem_rule)
9343 n_rules++;
9344 if (n_rules > coalesce->n_rules)
9345 return -EINVAL;
9346
9347 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9348 GFP_KERNEL);
9349 if (!new_coalesce.rules)
9350 return -ENOMEM;
9351
9352 new_coalesce.n_rules = n_rules;
9353 i = 0;
9354
9355 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9356 rem_rule) {
9357 err = nl80211_parse_coalesce_rule(rdev, rule,
9358 &new_coalesce.rules[i]);
9359 if (err)
9360 goto error;
9361
9362 i++;
9363 }
9364
9365 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9366 if (err)
9367 goto error;
9368
9369 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9370 if (!n_coalesce) {
9371 err = -ENOMEM;
9372 goto error;
9373 }
9374 cfg80211_rdev_free_coalesce(rdev);
9375 rdev->coalesce = n_coalesce;
9376
9377 return 0;
9378 error:
9379 for (i = 0; i < new_coalesce.n_rules; i++) {
9380 tmp_rule = &new_coalesce.rules[i];
9381 for (j = 0; j < tmp_rule->n_patterns; j++)
9382 kfree(tmp_rule->patterns[j].mask);
9383 kfree(tmp_rule->patterns);
9384 }
9385 kfree(new_coalesce.rules);
9386
9387 return err;
9388 }
9389
9390 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9391 {
9392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9393 struct net_device *dev = info->user_ptr[1];
9394 struct wireless_dev *wdev = dev->ieee80211_ptr;
9395 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9396 struct cfg80211_gtk_rekey_data rekey_data;
9397 int err;
9398
9399 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9400 return -EINVAL;
9401
9402 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9403 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9404 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9405 nl80211_rekey_policy);
9406 if (err)
9407 return err;
9408
9409 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9410 return -ERANGE;
9411 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9412 return -ERANGE;
9413 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9414 return -ERANGE;
9415
9416 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9417 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9418 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9419
9420 wdev_lock(wdev);
9421 if (!wdev->current_bss) {
9422 err = -ENOTCONN;
9423 goto out;
9424 }
9425
9426 if (!rdev->ops->set_rekey_data) {
9427 err = -EOPNOTSUPP;
9428 goto out;
9429 }
9430
9431 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9432 out:
9433 wdev_unlock(wdev);
9434 return err;
9435 }
9436
9437 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9438 struct genl_info *info)
9439 {
9440 struct net_device *dev = info->user_ptr[1];
9441 struct wireless_dev *wdev = dev->ieee80211_ptr;
9442
9443 if (wdev->iftype != NL80211_IFTYPE_AP &&
9444 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9445 return -EINVAL;
9446
9447 if (wdev->ap_unexpected_nlportid)
9448 return -EBUSY;
9449
9450 wdev->ap_unexpected_nlportid = info->snd_portid;
9451 return 0;
9452 }
9453
9454 static int nl80211_probe_client(struct sk_buff *skb,
9455 struct genl_info *info)
9456 {
9457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9458 struct net_device *dev = info->user_ptr[1];
9459 struct wireless_dev *wdev = dev->ieee80211_ptr;
9460 struct sk_buff *msg;
9461 void *hdr;
9462 const u8 *addr;
9463 u64 cookie;
9464 int err;
9465
9466 if (wdev->iftype != NL80211_IFTYPE_AP &&
9467 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9468 return -EOPNOTSUPP;
9469
9470 if (!info->attrs[NL80211_ATTR_MAC])
9471 return -EINVAL;
9472
9473 if (!rdev->ops->probe_client)
9474 return -EOPNOTSUPP;
9475
9476 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9477 if (!msg)
9478 return -ENOMEM;
9479
9480 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9481 NL80211_CMD_PROBE_CLIENT);
9482 if (!hdr) {
9483 err = -ENOBUFS;
9484 goto free_msg;
9485 }
9486
9487 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9488
9489 err = rdev_probe_client(rdev, dev, addr, &cookie);
9490 if (err)
9491 goto free_msg;
9492
9493 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9494 goto nla_put_failure;
9495
9496 genlmsg_end(msg, hdr);
9497
9498 return genlmsg_reply(msg, info);
9499
9500 nla_put_failure:
9501 err = -ENOBUFS;
9502 free_msg:
9503 nlmsg_free(msg);
9504 return err;
9505 }
9506
9507 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9508 {
9509 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9510 struct cfg80211_beacon_registration *reg, *nreg;
9511 int rv;
9512
9513 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9514 return -EOPNOTSUPP;
9515
9516 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9517 if (!nreg)
9518 return -ENOMEM;
9519
9520 /* First, check if already registered. */
9521 spin_lock_bh(&rdev->beacon_registrations_lock);
9522 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9523 if (reg->nlportid == info->snd_portid) {
9524 rv = -EALREADY;
9525 goto out_err;
9526 }
9527 }
9528 /* Add it to the list */
9529 nreg->nlportid = info->snd_portid;
9530 list_add(&nreg->list, &rdev->beacon_registrations);
9531
9532 spin_unlock_bh(&rdev->beacon_registrations_lock);
9533
9534 return 0;
9535 out_err:
9536 spin_unlock_bh(&rdev->beacon_registrations_lock);
9537 kfree(nreg);
9538 return rv;
9539 }
9540
9541 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9542 {
9543 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9544 struct wireless_dev *wdev = info->user_ptr[1];
9545 int err;
9546
9547 if (!rdev->ops->start_p2p_device)
9548 return -EOPNOTSUPP;
9549
9550 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9551 return -EOPNOTSUPP;
9552
9553 if (wdev->p2p_started)
9554 return 0;
9555
9556 if (rfkill_blocked(rdev->rfkill))
9557 return -ERFKILL;
9558
9559 err = rdev_start_p2p_device(rdev, wdev);
9560 if (err)
9561 return err;
9562
9563 wdev->p2p_started = true;
9564 rdev->opencount++;
9565
9566 return 0;
9567 }
9568
9569 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9570 {
9571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9572 struct wireless_dev *wdev = info->user_ptr[1];
9573
9574 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9575 return -EOPNOTSUPP;
9576
9577 if (!rdev->ops->stop_p2p_device)
9578 return -EOPNOTSUPP;
9579
9580 cfg80211_stop_p2p_device(rdev, wdev);
9581
9582 return 0;
9583 }
9584
9585 static int nl80211_get_protocol_features(struct sk_buff *skb,
9586 struct genl_info *info)
9587 {
9588 void *hdr;
9589 struct sk_buff *msg;
9590
9591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9592 if (!msg)
9593 return -ENOMEM;
9594
9595 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9596 NL80211_CMD_GET_PROTOCOL_FEATURES);
9597 if (!hdr)
9598 goto nla_put_failure;
9599
9600 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9601 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9602 goto nla_put_failure;
9603
9604 genlmsg_end(msg, hdr);
9605 return genlmsg_reply(msg, info);
9606
9607 nla_put_failure:
9608 kfree_skb(msg);
9609 return -ENOBUFS;
9610 }
9611
9612 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9613 {
9614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9615 struct cfg80211_update_ft_ies_params ft_params;
9616 struct net_device *dev = info->user_ptr[1];
9617
9618 if (!rdev->ops->update_ft_ies)
9619 return -EOPNOTSUPP;
9620
9621 if (!info->attrs[NL80211_ATTR_MDID] ||
9622 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9623 return -EINVAL;
9624
9625 memset(&ft_params, 0, sizeof(ft_params));
9626 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9627 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9628 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9629
9630 return rdev_update_ft_ies(rdev, dev, &ft_params);
9631 }
9632
9633 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9634 struct genl_info *info)
9635 {
9636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9637 struct wireless_dev *wdev = info->user_ptr[1];
9638 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9639 u16 duration;
9640 int ret;
9641
9642 if (!rdev->ops->crit_proto_start)
9643 return -EOPNOTSUPP;
9644
9645 if (WARN_ON(!rdev->ops->crit_proto_stop))
9646 return -EINVAL;
9647
9648 if (rdev->crit_proto_nlportid)
9649 return -EBUSY;
9650
9651 /* determine protocol if provided */
9652 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9653 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9654
9655 if (proto >= NUM_NL80211_CRIT_PROTO)
9656 return -EINVAL;
9657
9658 /* timeout must be provided */
9659 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9660 return -EINVAL;
9661
9662 duration =
9663 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9664
9665 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9666 return -ERANGE;
9667
9668 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9669 if (!ret)
9670 rdev->crit_proto_nlportid = info->snd_portid;
9671
9672 return ret;
9673 }
9674
9675 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9676 struct genl_info *info)
9677 {
9678 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9679 struct wireless_dev *wdev = info->user_ptr[1];
9680
9681 if (!rdev->ops->crit_proto_stop)
9682 return -EOPNOTSUPP;
9683
9684 if (rdev->crit_proto_nlportid) {
9685 rdev->crit_proto_nlportid = 0;
9686 rdev_crit_proto_stop(rdev, wdev);
9687 }
9688 return 0;
9689 }
9690
9691 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9692 {
9693 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9694 struct wireless_dev *wdev =
9695 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9696 int i, err;
9697 u32 vid, subcmd;
9698
9699 if (!rdev->wiphy.vendor_commands)
9700 return -EOPNOTSUPP;
9701
9702 if (IS_ERR(wdev)) {
9703 err = PTR_ERR(wdev);
9704 if (err != -EINVAL)
9705 return err;
9706 wdev = NULL;
9707 } else if (wdev->wiphy != &rdev->wiphy) {
9708 return -EINVAL;
9709 }
9710
9711 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9712 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9713 return -EINVAL;
9714
9715 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9716 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9717 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9718 const struct wiphy_vendor_command *vcmd;
9719 void *data = NULL;
9720 int len = 0;
9721
9722 vcmd = &rdev->wiphy.vendor_commands[i];
9723
9724 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9725 continue;
9726
9727 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9728 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9729 if (!wdev)
9730 return -EINVAL;
9731 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9732 !wdev->netdev)
9733 return -EINVAL;
9734
9735 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9736 if (wdev->netdev &&
9737 !netif_running(wdev->netdev))
9738 return -ENETDOWN;
9739 if (!wdev->netdev && !wdev->p2p_started)
9740 return -ENETDOWN;
9741 }
9742 } else {
9743 wdev = NULL;
9744 }
9745
9746 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9747 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9748 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9749 }
9750
9751 rdev->cur_cmd_info = info;
9752 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9753 data, len);
9754 rdev->cur_cmd_info = NULL;
9755 return err;
9756 }
9757
9758 return -EOPNOTSUPP;
9759 }
9760
9761 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9762 enum nl80211_commands cmd,
9763 enum nl80211_attrs attr,
9764 int approxlen)
9765 {
9766 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9767
9768 if (WARN_ON(!rdev->cur_cmd_info))
9769 return NULL;
9770
9771 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9772 rdev->cur_cmd_info->snd_portid,
9773 rdev->cur_cmd_info->snd_seq,
9774 cmd, attr, NULL, GFP_KERNEL);
9775 }
9776 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9777
9778 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9779 {
9780 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9781 void *hdr = ((void **)skb->cb)[1];
9782 struct nlattr *data = ((void **)skb->cb)[2];
9783
9784 /* clear CB data for netlink core to own from now on */
9785 memset(skb->cb, 0, sizeof(skb->cb));
9786
9787 if (WARN_ON(!rdev->cur_cmd_info)) {
9788 kfree_skb(skb);
9789 return -EINVAL;
9790 }
9791
9792 nla_nest_end(skb, data);
9793 genlmsg_end(skb, hdr);
9794 return genlmsg_reply(skb, rdev->cur_cmd_info);
9795 }
9796 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9797
9798
9799 static int nl80211_set_qos_map(struct sk_buff *skb,
9800 struct genl_info *info)
9801 {
9802 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9803 struct cfg80211_qos_map *qos_map = NULL;
9804 struct net_device *dev = info->user_ptr[1];
9805 u8 *pos, len, num_des, des_len, des;
9806 int ret;
9807
9808 if (!rdev->ops->set_qos_map)
9809 return -EOPNOTSUPP;
9810
9811 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9812 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9813 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9814
9815 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9816 len > IEEE80211_QOS_MAP_LEN_MAX)
9817 return -EINVAL;
9818
9819 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9820 if (!qos_map)
9821 return -ENOMEM;
9822
9823 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9824 if (num_des) {
9825 des_len = num_des *
9826 sizeof(struct cfg80211_dscp_exception);
9827 memcpy(qos_map->dscp_exception, pos, des_len);
9828 qos_map->num_des = num_des;
9829 for (des = 0; des < num_des; des++) {
9830 if (qos_map->dscp_exception[des].up > 7) {
9831 kfree(qos_map);
9832 return -EINVAL;
9833 }
9834 }
9835 pos += des_len;
9836 }
9837 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9838 }
9839
9840 wdev_lock(dev->ieee80211_ptr);
9841 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9842 if (!ret)
9843 ret = rdev_set_qos_map(rdev, dev, qos_map);
9844 wdev_unlock(dev->ieee80211_ptr);
9845
9846 kfree(qos_map);
9847 return ret;
9848 }
9849
9850 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9851 {
9852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9853 struct net_device *dev = info->user_ptr[1];
9854 struct wireless_dev *wdev = dev->ieee80211_ptr;
9855 const u8 *peer;
9856 u8 tsid, up;
9857 u16 admitted_time = 0;
9858 int err;
9859
9860 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9861 return -EOPNOTSUPP;
9862
9863 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9864 !info->attrs[NL80211_ATTR_USER_PRIO])
9865 return -EINVAL;
9866
9867 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9868 if (tsid >= IEEE80211_NUM_TIDS)
9869 return -EINVAL;
9870
9871 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9872 if (up >= IEEE80211_NUM_UPS)
9873 return -EINVAL;
9874
9875 /* WMM uses TIDs 0-7 even for TSPEC */
9876 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9877 /* TODO: handle 802.11 TSPEC/admission control
9878 * need more attributes for that (e.g. BA session requirement);
9879 * change the WMM adminssion test above to allow both then
9880 */
9881 return -EINVAL;
9882 }
9883
9884 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9885
9886 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9887 admitted_time =
9888 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9889 if (!admitted_time)
9890 return -EINVAL;
9891 }
9892
9893 wdev_lock(wdev);
9894 switch (wdev->iftype) {
9895 case NL80211_IFTYPE_STATION:
9896 case NL80211_IFTYPE_P2P_CLIENT:
9897 if (wdev->current_bss)
9898 break;
9899 err = -ENOTCONN;
9900 goto out;
9901 default:
9902 err = -EOPNOTSUPP;
9903 goto out;
9904 }
9905
9906 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9907
9908 out:
9909 wdev_unlock(wdev);
9910 return err;
9911 }
9912
9913 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9914 {
9915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9916 struct net_device *dev = info->user_ptr[1];
9917 struct wireless_dev *wdev = dev->ieee80211_ptr;
9918 const u8 *peer;
9919 u8 tsid;
9920 int err;
9921
9922 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9923 return -EINVAL;
9924
9925 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9926 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9927
9928 wdev_lock(wdev);
9929 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9930 wdev_unlock(wdev);
9931
9932 return err;
9933 }
9934
9935 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9936 struct genl_info *info)
9937 {
9938 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9939 struct net_device *dev = info->user_ptr[1];
9940 struct wireless_dev *wdev = dev->ieee80211_ptr;
9941 struct cfg80211_chan_def chandef = {};
9942 const u8 *addr;
9943 u8 oper_class;
9944 int err;
9945
9946 if (!rdev->ops->tdls_channel_switch ||
9947 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9948 return -EOPNOTSUPP;
9949
9950 switch (dev->ieee80211_ptr->iftype) {
9951 case NL80211_IFTYPE_STATION:
9952 case NL80211_IFTYPE_P2P_CLIENT:
9953 break;
9954 default:
9955 return -EOPNOTSUPP;
9956 }
9957
9958 if (!info->attrs[NL80211_ATTR_MAC] ||
9959 !info->attrs[NL80211_ATTR_OPER_CLASS])
9960 return -EINVAL;
9961
9962 err = nl80211_parse_chandef(rdev, info, &chandef);
9963 if (err)
9964 return err;
9965
9966 /*
9967 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9968 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9969 * specification is not defined for them.
9970 */
9971 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9972 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9973 chandef.width != NL80211_CHAN_WIDTH_20)
9974 return -EINVAL;
9975
9976 /* we will be active on the TDLS link */
9977 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
9978 return -EINVAL;
9979
9980 /* don't allow switching to DFS channels */
9981 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
9982 return -EINVAL;
9983
9984 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9985 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
9986
9987 wdev_lock(wdev);
9988 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
9989 wdev_unlock(wdev);
9990
9991 return err;
9992 }
9993
9994 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
9995 struct genl_info *info)
9996 {
9997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9998 struct net_device *dev = info->user_ptr[1];
9999 struct wireless_dev *wdev = dev->ieee80211_ptr;
10000 const u8 *addr;
10001
10002 if (!rdev->ops->tdls_channel_switch ||
10003 !rdev->ops->tdls_cancel_channel_switch ||
10004 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10005 return -EOPNOTSUPP;
10006
10007 switch (dev->ieee80211_ptr->iftype) {
10008 case NL80211_IFTYPE_STATION:
10009 case NL80211_IFTYPE_P2P_CLIENT:
10010 break;
10011 default:
10012 return -EOPNOTSUPP;
10013 }
10014
10015 if (!info->attrs[NL80211_ATTR_MAC])
10016 return -EINVAL;
10017
10018 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10019
10020 wdev_lock(wdev);
10021 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10022 wdev_unlock(wdev);
10023
10024 return 0;
10025 }
10026
10027 #define NL80211_FLAG_NEED_WIPHY 0x01
10028 #define NL80211_FLAG_NEED_NETDEV 0x02
10029 #define NL80211_FLAG_NEED_RTNL 0x04
10030 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10031 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10032 NL80211_FLAG_CHECK_NETDEV_UP)
10033 #define NL80211_FLAG_NEED_WDEV 0x10
10034 /* If a netdev is associated, it must be UP, P2P must be started */
10035 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10036 NL80211_FLAG_CHECK_NETDEV_UP)
10037 #define NL80211_FLAG_CLEAR_SKB 0x20
10038
10039 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10040 struct genl_info *info)
10041 {
10042 struct cfg80211_registered_device *rdev;
10043 struct wireless_dev *wdev;
10044 struct net_device *dev;
10045 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10046
10047 if (rtnl)
10048 rtnl_lock();
10049
10050 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10051 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10052 if (IS_ERR(rdev)) {
10053 if (rtnl)
10054 rtnl_unlock();
10055 return PTR_ERR(rdev);
10056 }
10057 info->user_ptr[0] = rdev;
10058 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10059 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10060 ASSERT_RTNL();
10061
10062 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10063 info->attrs);
10064 if (IS_ERR(wdev)) {
10065 if (rtnl)
10066 rtnl_unlock();
10067 return PTR_ERR(wdev);
10068 }
10069
10070 dev = wdev->netdev;
10071 rdev = wiphy_to_rdev(wdev->wiphy);
10072
10073 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10074 if (!dev) {
10075 if (rtnl)
10076 rtnl_unlock();
10077 return -EINVAL;
10078 }
10079
10080 info->user_ptr[1] = dev;
10081 } else {
10082 info->user_ptr[1] = wdev;
10083 }
10084
10085 if (dev) {
10086 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10087 !netif_running(dev)) {
10088 if (rtnl)
10089 rtnl_unlock();
10090 return -ENETDOWN;
10091 }
10092
10093 dev_hold(dev);
10094 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10095 if (!wdev->p2p_started) {
10096 if (rtnl)
10097 rtnl_unlock();
10098 return -ENETDOWN;
10099 }
10100 }
10101
10102 info->user_ptr[0] = rdev;
10103 }
10104
10105 return 0;
10106 }
10107
10108 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10109 struct genl_info *info)
10110 {
10111 if (info->user_ptr[1]) {
10112 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10113 struct wireless_dev *wdev = info->user_ptr[1];
10114
10115 if (wdev->netdev)
10116 dev_put(wdev->netdev);
10117 } else {
10118 dev_put(info->user_ptr[1]);
10119 }
10120 }
10121
10122 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10123 rtnl_unlock();
10124
10125 /* If needed, clear the netlink message payload from the SKB
10126 * as it might contain key data that shouldn't stick around on
10127 * the heap after the SKB is freed. The netlink message header
10128 * is still needed for further processing, so leave it intact.
10129 */
10130 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10131 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10132
10133 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10134 }
10135 }
10136
10137 static const struct genl_ops nl80211_ops[] = {
10138 {
10139 .cmd = NL80211_CMD_GET_WIPHY,
10140 .doit = nl80211_get_wiphy,
10141 .dumpit = nl80211_dump_wiphy,
10142 .done = nl80211_dump_wiphy_done,
10143 .policy = nl80211_policy,
10144 /* can be retrieved by unprivileged users */
10145 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10146 NL80211_FLAG_NEED_RTNL,
10147 },
10148 {
10149 .cmd = NL80211_CMD_SET_WIPHY,
10150 .doit = nl80211_set_wiphy,
10151 .policy = nl80211_policy,
10152 .flags = GENL_ADMIN_PERM,
10153 .internal_flags = NL80211_FLAG_NEED_RTNL,
10154 },
10155 {
10156 .cmd = NL80211_CMD_GET_INTERFACE,
10157 .doit = nl80211_get_interface,
10158 .dumpit = nl80211_dump_interface,
10159 .policy = nl80211_policy,
10160 /* can be retrieved by unprivileged users */
10161 .internal_flags = NL80211_FLAG_NEED_WDEV |
10162 NL80211_FLAG_NEED_RTNL,
10163 },
10164 {
10165 .cmd = NL80211_CMD_SET_INTERFACE,
10166 .doit = nl80211_set_interface,
10167 .policy = nl80211_policy,
10168 .flags = GENL_ADMIN_PERM,
10169 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10170 NL80211_FLAG_NEED_RTNL,
10171 },
10172 {
10173 .cmd = NL80211_CMD_NEW_INTERFACE,
10174 .doit = nl80211_new_interface,
10175 .policy = nl80211_policy,
10176 .flags = GENL_ADMIN_PERM,
10177 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10178 NL80211_FLAG_NEED_RTNL,
10179 },
10180 {
10181 .cmd = NL80211_CMD_DEL_INTERFACE,
10182 .doit = nl80211_del_interface,
10183 .policy = nl80211_policy,
10184 .flags = GENL_ADMIN_PERM,
10185 .internal_flags = NL80211_FLAG_NEED_WDEV |
10186 NL80211_FLAG_NEED_RTNL,
10187 },
10188 {
10189 .cmd = NL80211_CMD_GET_KEY,
10190 .doit = nl80211_get_key,
10191 .policy = nl80211_policy,
10192 .flags = GENL_ADMIN_PERM,
10193 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10194 NL80211_FLAG_NEED_RTNL,
10195 },
10196 {
10197 .cmd = NL80211_CMD_SET_KEY,
10198 .doit = nl80211_set_key,
10199 .policy = nl80211_policy,
10200 .flags = GENL_ADMIN_PERM,
10201 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10202 NL80211_FLAG_NEED_RTNL |
10203 NL80211_FLAG_CLEAR_SKB,
10204 },
10205 {
10206 .cmd = NL80211_CMD_NEW_KEY,
10207 .doit = nl80211_new_key,
10208 .policy = nl80211_policy,
10209 .flags = GENL_ADMIN_PERM,
10210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10211 NL80211_FLAG_NEED_RTNL |
10212 NL80211_FLAG_CLEAR_SKB,
10213 },
10214 {
10215 .cmd = NL80211_CMD_DEL_KEY,
10216 .doit = nl80211_del_key,
10217 .policy = nl80211_policy,
10218 .flags = GENL_ADMIN_PERM,
10219 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10220 NL80211_FLAG_NEED_RTNL,
10221 },
10222 {
10223 .cmd = NL80211_CMD_SET_BEACON,
10224 .policy = nl80211_policy,
10225 .flags = GENL_ADMIN_PERM,
10226 .doit = nl80211_set_beacon,
10227 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10228 NL80211_FLAG_NEED_RTNL,
10229 },
10230 {
10231 .cmd = NL80211_CMD_START_AP,
10232 .policy = nl80211_policy,
10233 .flags = GENL_ADMIN_PERM,
10234 .doit = nl80211_start_ap,
10235 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10236 NL80211_FLAG_NEED_RTNL,
10237 },
10238 {
10239 .cmd = NL80211_CMD_STOP_AP,
10240 .policy = nl80211_policy,
10241 .flags = GENL_ADMIN_PERM,
10242 .doit = nl80211_stop_ap,
10243 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10244 NL80211_FLAG_NEED_RTNL,
10245 },
10246 {
10247 .cmd = NL80211_CMD_GET_STATION,
10248 .doit = nl80211_get_station,
10249 .dumpit = nl80211_dump_station,
10250 .policy = nl80211_policy,
10251 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10252 NL80211_FLAG_NEED_RTNL,
10253 },
10254 {
10255 .cmd = NL80211_CMD_SET_STATION,
10256 .doit = nl80211_set_station,
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_NEW_STATION,
10264 .doit = nl80211_new_station,
10265 .policy = nl80211_policy,
10266 .flags = GENL_ADMIN_PERM,
10267 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10268 NL80211_FLAG_NEED_RTNL,
10269 },
10270 {
10271 .cmd = NL80211_CMD_DEL_STATION,
10272 .doit = nl80211_del_station,
10273 .policy = nl80211_policy,
10274 .flags = GENL_ADMIN_PERM,
10275 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10276 NL80211_FLAG_NEED_RTNL,
10277 },
10278 {
10279 .cmd = NL80211_CMD_GET_MPATH,
10280 .doit = nl80211_get_mpath,
10281 .dumpit = nl80211_dump_mpath,
10282 .policy = nl80211_policy,
10283 .flags = GENL_ADMIN_PERM,
10284 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10285 NL80211_FLAG_NEED_RTNL,
10286 },
10287 {
10288 .cmd = NL80211_CMD_GET_MPP,
10289 .doit = nl80211_get_mpp,
10290 .dumpit = nl80211_dump_mpp,
10291 .policy = nl80211_policy,
10292 .flags = GENL_ADMIN_PERM,
10293 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10294 NL80211_FLAG_NEED_RTNL,
10295 },
10296 {
10297 .cmd = NL80211_CMD_SET_MPATH,
10298 .doit = nl80211_set_mpath,
10299 .policy = nl80211_policy,
10300 .flags = GENL_ADMIN_PERM,
10301 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10302 NL80211_FLAG_NEED_RTNL,
10303 },
10304 {
10305 .cmd = NL80211_CMD_NEW_MPATH,
10306 .doit = nl80211_new_mpath,
10307 .policy = nl80211_policy,
10308 .flags = GENL_ADMIN_PERM,
10309 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10310 NL80211_FLAG_NEED_RTNL,
10311 },
10312 {
10313 .cmd = NL80211_CMD_DEL_MPATH,
10314 .doit = nl80211_del_mpath,
10315 .policy = nl80211_policy,
10316 .flags = GENL_ADMIN_PERM,
10317 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10318 NL80211_FLAG_NEED_RTNL,
10319 },
10320 {
10321 .cmd = NL80211_CMD_SET_BSS,
10322 .doit = nl80211_set_bss,
10323 .policy = nl80211_policy,
10324 .flags = GENL_ADMIN_PERM,
10325 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10326 NL80211_FLAG_NEED_RTNL,
10327 },
10328 {
10329 .cmd = NL80211_CMD_GET_REG,
10330 .doit = nl80211_get_reg_do,
10331 .dumpit = nl80211_get_reg_dump,
10332 .policy = nl80211_policy,
10333 .internal_flags = NL80211_FLAG_NEED_RTNL,
10334 /* can be retrieved by unprivileged users */
10335 },
10336 {
10337 .cmd = NL80211_CMD_SET_REG,
10338 .doit = nl80211_set_reg,
10339 .policy = nl80211_policy,
10340 .flags = GENL_ADMIN_PERM,
10341 .internal_flags = NL80211_FLAG_NEED_RTNL,
10342 },
10343 {
10344 .cmd = NL80211_CMD_REQ_SET_REG,
10345 .doit = nl80211_req_set_reg,
10346 .policy = nl80211_policy,
10347 .flags = GENL_ADMIN_PERM,
10348 },
10349 {
10350 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10351 .doit = nl80211_get_mesh_config,
10352 .policy = nl80211_policy,
10353 /* can be retrieved by unprivileged users */
10354 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10355 NL80211_FLAG_NEED_RTNL,
10356 },
10357 {
10358 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10359 .doit = nl80211_update_mesh_config,
10360 .policy = nl80211_policy,
10361 .flags = GENL_ADMIN_PERM,
10362 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10363 NL80211_FLAG_NEED_RTNL,
10364 },
10365 {
10366 .cmd = NL80211_CMD_TRIGGER_SCAN,
10367 .doit = nl80211_trigger_scan,
10368 .policy = nl80211_policy,
10369 .flags = GENL_ADMIN_PERM,
10370 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10371 NL80211_FLAG_NEED_RTNL,
10372 },
10373 {
10374 .cmd = NL80211_CMD_GET_SCAN,
10375 .policy = nl80211_policy,
10376 .dumpit = nl80211_dump_scan,
10377 },
10378 {
10379 .cmd = NL80211_CMD_START_SCHED_SCAN,
10380 .doit = nl80211_start_sched_scan,
10381 .policy = nl80211_policy,
10382 .flags = GENL_ADMIN_PERM,
10383 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10384 NL80211_FLAG_NEED_RTNL,
10385 },
10386 {
10387 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10388 .doit = nl80211_stop_sched_scan,
10389 .policy = nl80211_policy,
10390 .flags = GENL_ADMIN_PERM,
10391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10392 NL80211_FLAG_NEED_RTNL,
10393 },
10394 {
10395 .cmd = NL80211_CMD_AUTHENTICATE,
10396 .doit = nl80211_authenticate,
10397 .policy = nl80211_policy,
10398 .flags = GENL_ADMIN_PERM,
10399 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10400 NL80211_FLAG_NEED_RTNL |
10401 NL80211_FLAG_CLEAR_SKB,
10402 },
10403 {
10404 .cmd = NL80211_CMD_ASSOCIATE,
10405 .doit = nl80211_associate,
10406 .policy = nl80211_policy,
10407 .flags = GENL_ADMIN_PERM,
10408 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10409 NL80211_FLAG_NEED_RTNL,
10410 },
10411 {
10412 .cmd = NL80211_CMD_DEAUTHENTICATE,
10413 .doit = nl80211_deauthenticate,
10414 .policy = nl80211_policy,
10415 .flags = GENL_ADMIN_PERM,
10416 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10417 NL80211_FLAG_NEED_RTNL,
10418 },
10419 {
10420 .cmd = NL80211_CMD_DISASSOCIATE,
10421 .doit = nl80211_disassociate,
10422 .policy = nl80211_policy,
10423 .flags = GENL_ADMIN_PERM,
10424 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10425 NL80211_FLAG_NEED_RTNL,
10426 },
10427 {
10428 .cmd = NL80211_CMD_JOIN_IBSS,
10429 .doit = nl80211_join_ibss,
10430 .policy = nl80211_policy,
10431 .flags = GENL_ADMIN_PERM,
10432 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10433 NL80211_FLAG_NEED_RTNL,
10434 },
10435 {
10436 .cmd = NL80211_CMD_LEAVE_IBSS,
10437 .doit = nl80211_leave_ibss,
10438 .policy = nl80211_policy,
10439 .flags = GENL_ADMIN_PERM,
10440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10441 NL80211_FLAG_NEED_RTNL,
10442 },
10443 #ifdef CONFIG_NL80211_TESTMODE
10444 {
10445 .cmd = NL80211_CMD_TESTMODE,
10446 .doit = nl80211_testmode_do,
10447 .dumpit = nl80211_testmode_dump,
10448 .policy = nl80211_policy,
10449 .flags = GENL_ADMIN_PERM,
10450 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10451 NL80211_FLAG_NEED_RTNL,
10452 },
10453 #endif
10454 {
10455 .cmd = NL80211_CMD_CONNECT,
10456 .doit = nl80211_connect,
10457 .policy = nl80211_policy,
10458 .flags = GENL_ADMIN_PERM,
10459 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10460 NL80211_FLAG_NEED_RTNL,
10461 },
10462 {
10463 .cmd = NL80211_CMD_DISCONNECT,
10464 .doit = nl80211_disconnect,
10465 .policy = nl80211_policy,
10466 .flags = GENL_ADMIN_PERM,
10467 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10468 NL80211_FLAG_NEED_RTNL,
10469 },
10470 {
10471 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10472 .doit = nl80211_wiphy_netns,
10473 .policy = nl80211_policy,
10474 .flags = GENL_ADMIN_PERM,
10475 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10476 NL80211_FLAG_NEED_RTNL,
10477 },
10478 {
10479 .cmd = NL80211_CMD_GET_SURVEY,
10480 .policy = nl80211_policy,
10481 .dumpit = nl80211_dump_survey,
10482 },
10483 {
10484 .cmd = NL80211_CMD_SET_PMKSA,
10485 .doit = nl80211_setdel_pmksa,
10486 .policy = nl80211_policy,
10487 .flags = GENL_ADMIN_PERM,
10488 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10489 NL80211_FLAG_NEED_RTNL,
10490 },
10491 {
10492 .cmd = NL80211_CMD_DEL_PMKSA,
10493 .doit = nl80211_setdel_pmksa,
10494 .policy = nl80211_policy,
10495 .flags = GENL_ADMIN_PERM,
10496 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10497 NL80211_FLAG_NEED_RTNL,
10498 },
10499 {
10500 .cmd = NL80211_CMD_FLUSH_PMKSA,
10501 .doit = nl80211_flush_pmksa,
10502 .policy = nl80211_policy,
10503 .flags = GENL_ADMIN_PERM,
10504 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10505 NL80211_FLAG_NEED_RTNL,
10506 },
10507 {
10508 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10509 .doit = nl80211_remain_on_channel,
10510 .policy = nl80211_policy,
10511 .flags = GENL_ADMIN_PERM,
10512 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10513 NL80211_FLAG_NEED_RTNL,
10514 },
10515 {
10516 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10517 .doit = nl80211_cancel_remain_on_channel,
10518 .policy = nl80211_policy,
10519 .flags = GENL_ADMIN_PERM,
10520 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10521 NL80211_FLAG_NEED_RTNL,
10522 },
10523 {
10524 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10525 .doit = nl80211_set_tx_bitrate_mask,
10526 .policy = nl80211_policy,
10527 .flags = GENL_ADMIN_PERM,
10528 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10529 NL80211_FLAG_NEED_RTNL,
10530 },
10531 {
10532 .cmd = NL80211_CMD_REGISTER_FRAME,
10533 .doit = nl80211_register_mgmt,
10534 .policy = nl80211_policy,
10535 .flags = GENL_ADMIN_PERM,
10536 .internal_flags = NL80211_FLAG_NEED_WDEV |
10537 NL80211_FLAG_NEED_RTNL,
10538 },
10539 {
10540 .cmd = NL80211_CMD_FRAME,
10541 .doit = nl80211_tx_mgmt,
10542 .policy = nl80211_policy,
10543 .flags = GENL_ADMIN_PERM,
10544 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10545 NL80211_FLAG_NEED_RTNL,
10546 },
10547 {
10548 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10549 .doit = nl80211_tx_mgmt_cancel_wait,
10550 .policy = nl80211_policy,
10551 .flags = GENL_ADMIN_PERM,
10552 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10553 NL80211_FLAG_NEED_RTNL,
10554 },
10555 {
10556 .cmd = NL80211_CMD_SET_POWER_SAVE,
10557 .doit = nl80211_set_power_save,
10558 .policy = nl80211_policy,
10559 .flags = GENL_ADMIN_PERM,
10560 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10561 NL80211_FLAG_NEED_RTNL,
10562 },
10563 {
10564 .cmd = NL80211_CMD_GET_POWER_SAVE,
10565 .doit = nl80211_get_power_save,
10566 .policy = nl80211_policy,
10567 /* can be retrieved by unprivileged users */
10568 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10569 NL80211_FLAG_NEED_RTNL,
10570 },
10571 {
10572 .cmd = NL80211_CMD_SET_CQM,
10573 .doit = nl80211_set_cqm,
10574 .policy = nl80211_policy,
10575 .flags = GENL_ADMIN_PERM,
10576 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10577 NL80211_FLAG_NEED_RTNL,
10578 },
10579 {
10580 .cmd = NL80211_CMD_SET_CHANNEL,
10581 .doit = nl80211_set_channel,
10582 .policy = nl80211_policy,
10583 .flags = GENL_ADMIN_PERM,
10584 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10585 NL80211_FLAG_NEED_RTNL,
10586 },
10587 {
10588 .cmd = NL80211_CMD_SET_WDS_PEER,
10589 .doit = nl80211_set_wds_peer,
10590 .policy = nl80211_policy,
10591 .flags = GENL_ADMIN_PERM,
10592 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10593 NL80211_FLAG_NEED_RTNL,
10594 },
10595 {
10596 .cmd = NL80211_CMD_JOIN_MESH,
10597 .doit = nl80211_join_mesh,
10598 .policy = nl80211_policy,
10599 .flags = GENL_ADMIN_PERM,
10600 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10601 NL80211_FLAG_NEED_RTNL,
10602 },
10603 {
10604 .cmd = NL80211_CMD_LEAVE_MESH,
10605 .doit = nl80211_leave_mesh,
10606 .policy = nl80211_policy,
10607 .flags = GENL_ADMIN_PERM,
10608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10609 NL80211_FLAG_NEED_RTNL,
10610 },
10611 {
10612 .cmd = NL80211_CMD_JOIN_OCB,
10613 .doit = nl80211_join_ocb,
10614 .policy = nl80211_policy,
10615 .flags = GENL_ADMIN_PERM,
10616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10617 NL80211_FLAG_NEED_RTNL,
10618 },
10619 {
10620 .cmd = NL80211_CMD_LEAVE_OCB,
10621 .doit = nl80211_leave_ocb,
10622 .policy = nl80211_policy,
10623 .flags = GENL_ADMIN_PERM,
10624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10625 NL80211_FLAG_NEED_RTNL,
10626 },
10627 #ifdef CONFIG_PM
10628 {
10629 .cmd = NL80211_CMD_GET_WOWLAN,
10630 .doit = nl80211_get_wowlan,
10631 .policy = nl80211_policy,
10632 /* can be retrieved by unprivileged users */
10633 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10634 NL80211_FLAG_NEED_RTNL,
10635 },
10636 {
10637 .cmd = NL80211_CMD_SET_WOWLAN,
10638 .doit = nl80211_set_wowlan,
10639 .policy = nl80211_policy,
10640 .flags = GENL_ADMIN_PERM,
10641 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10642 NL80211_FLAG_NEED_RTNL,
10643 },
10644 #endif
10645 {
10646 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10647 .doit = nl80211_set_rekey_data,
10648 .policy = nl80211_policy,
10649 .flags = GENL_ADMIN_PERM,
10650 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10651 NL80211_FLAG_NEED_RTNL |
10652 NL80211_FLAG_CLEAR_SKB,
10653 },
10654 {
10655 .cmd = NL80211_CMD_TDLS_MGMT,
10656 .doit = nl80211_tdls_mgmt,
10657 .policy = nl80211_policy,
10658 .flags = GENL_ADMIN_PERM,
10659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10660 NL80211_FLAG_NEED_RTNL,
10661 },
10662 {
10663 .cmd = NL80211_CMD_TDLS_OPER,
10664 .doit = nl80211_tdls_oper,
10665 .policy = nl80211_policy,
10666 .flags = GENL_ADMIN_PERM,
10667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10668 NL80211_FLAG_NEED_RTNL,
10669 },
10670 {
10671 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10672 .doit = nl80211_register_unexpected_frame,
10673 .policy = nl80211_policy,
10674 .flags = GENL_ADMIN_PERM,
10675 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10676 NL80211_FLAG_NEED_RTNL,
10677 },
10678 {
10679 .cmd = NL80211_CMD_PROBE_CLIENT,
10680 .doit = nl80211_probe_client,
10681 .policy = nl80211_policy,
10682 .flags = GENL_ADMIN_PERM,
10683 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10684 NL80211_FLAG_NEED_RTNL,
10685 },
10686 {
10687 .cmd = NL80211_CMD_REGISTER_BEACONS,
10688 .doit = nl80211_register_beacons,
10689 .policy = nl80211_policy,
10690 .flags = GENL_ADMIN_PERM,
10691 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10692 NL80211_FLAG_NEED_RTNL,
10693 },
10694 {
10695 .cmd = NL80211_CMD_SET_NOACK_MAP,
10696 .doit = nl80211_set_noack_map,
10697 .policy = nl80211_policy,
10698 .flags = GENL_ADMIN_PERM,
10699 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10700 NL80211_FLAG_NEED_RTNL,
10701 },
10702 {
10703 .cmd = NL80211_CMD_START_P2P_DEVICE,
10704 .doit = nl80211_start_p2p_device,
10705 .policy = nl80211_policy,
10706 .flags = GENL_ADMIN_PERM,
10707 .internal_flags = NL80211_FLAG_NEED_WDEV |
10708 NL80211_FLAG_NEED_RTNL,
10709 },
10710 {
10711 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10712 .doit = nl80211_stop_p2p_device,
10713 .policy = nl80211_policy,
10714 .flags = GENL_ADMIN_PERM,
10715 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10716 NL80211_FLAG_NEED_RTNL,
10717 },
10718 {
10719 .cmd = NL80211_CMD_SET_MCAST_RATE,
10720 .doit = nl80211_set_mcast_rate,
10721 .policy = nl80211_policy,
10722 .flags = GENL_ADMIN_PERM,
10723 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10724 NL80211_FLAG_NEED_RTNL,
10725 },
10726 {
10727 .cmd = NL80211_CMD_SET_MAC_ACL,
10728 .doit = nl80211_set_mac_acl,
10729 .policy = nl80211_policy,
10730 .flags = GENL_ADMIN_PERM,
10731 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10732 NL80211_FLAG_NEED_RTNL,
10733 },
10734 {
10735 .cmd = NL80211_CMD_RADAR_DETECT,
10736 .doit = nl80211_start_radar_detection,
10737 .policy = nl80211_policy,
10738 .flags = GENL_ADMIN_PERM,
10739 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10740 NL80211_FLAG_NEED_RTNL,
10741 },
10742 {
10743 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10744 .doit = nl80211_get_protocol_features,
10745 .policy = nl80211_policy,
10746 },
10747 {
10748 .cmd = NL80211_CMD_UPDATE_FT_IES,
10749 .doit = nl80211_update_ft_ies,
10750 .policy = nl80211_policy,
10751 .flags = GENL_ADMIN_PERM,
10752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10753 NL80211_FLAG_NEED_RTNL,
10754 },
10755 {
10756 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10757 .doit = nl80211_crit_protocol_start,
10758 .policy = nl80211_policy,
10759 .flags = GENL_ADMIN_PERM,
10760 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10761 NL80211_FLAG_NEED_RTNL,
10762 },
10763 {
10764 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10765 .doit = nl80211_crit_protocol_stop,
10766 .policy = nl80211_policy,
10767 .flags = GENL_ADMIN_PERM,
10768 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10769 NL80211_FLAG_NEED_RTNL,
10770 },
10771 {
10772 .cmd = NL80211_CMD_GET_COALESCE,
10773 .doit = nl80211_get_coalesce,
10774 .policy = nl80211_policy,
10775 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10776 NL80211_FLAG_NEED_RTNL,
10777 },
10778 {
10779 .cmd = NL80211_CMD_SET_COALESCE,
10780 .doit = nl80211_set_coalesce,
10781 .policy = nl80211_policy,
10782 .flags = GENL_ADMIN_PERM,
10783 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10784 NL80211_FLAG_NEED_RTNL,
10785 },
10786 {
10787 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10788 .doit = nl80211_channel_switch,
10789 .policy = nl80211_policy,
10790 .flags = GENL_ADMIN_PERM,
10791 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10792 NL80211_FLAG_NEED_RTNL,
10793 },
10794 {
10795 .cmd = NL80211_CMD_VENDOR,
10796 .doit = nl80211_vendor_cmd,
10797 .policy = nl80211_policy,
10798 .flags = GENL_ADMIN_PERM,
10799 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10800 NL80211_FLAG_NEED_RTNL,
10801 },
10802 {
10803 .cmd = NL80211_CMD_SET_QOS_MAP,
10804 .doit = nl80211_set_qos_map,
10805 .policy = nl80211_policy,
10806 .flags = GENL_ADMIN_PERM,
10807 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10808 NL80211_FLAG_NEED_RTNL,
10809 },
10810 {
10811 .cmd = NL80211_CMD_ADD_TX_TS,
10812 .doit = nl80211_add_tx_ts,
10813 .policy = nl80211_policy,
10814 .flags = GENL_ADMIN_PERM,
10815 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10816 NL80211_FLAG_NEED_RTNL,
10817 },
10818 {
10819 .cmd = NL80211_CMD_DEL_TX_TS,
10820 .doit = nl80211_del_tx_ts,
10821 .policy = nl80211_policy,
10822 .flags = GENL_ADMIN_PERM,
10823 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10824 NL80211_FLAG_NEED_RTNL,
10825 },
10826 {
10827 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10828 .doit = nl80211_tdls_channel_switch,
10829 .policy = nl80211_policy,
10830 .flags = GENL_ADMIN_PERM,
10831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10832 NL80211_FLAG_NEED_RTNL,
10833 },
10834 {
10835 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10836 .doit = nl80211_tdls_cancel_channel_switch,
10837 .policy = nl80211_policy,
10838 .flags = GENL_ADMIN_PERM,
10839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10840 NL80211_FLAG_NEED_RTNL,
10841 },
10842 };
10843
10844 /* notification functions */
10845
10846 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10847 enum nl80211_commands cmd)
10848 {
10849 struct sk_buff *msg;
10850 struct nl80211_dump_wiphy_state state = {};
10851
10852 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10853 cmd != NL80211_CMD_DEL_WIPHY);
10854
10855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10856 if (!msg)
10857 return;
10858
10859 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10860 nlmsg_free(msg);
10861 return;
10862 }
10863
10864 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10865 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10866 }
10867
10868 static int nl80211_add_scan_req(struct sk_buff *msg,
10869 struct cfg80211_registered_device *rdev)
10870 {
10871 struct cfg80211_scan_request *req = rdev->scan_req;
10872 struct nlattr *nest;
10873 int i;
10874
10875 if (WARN_ON(!req))
10876 return 0;
10877
10878 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10879 if (!nest)
10880 goto nla_put_failure;
10881 for (i = 0; i < req->n_ssids; i++) {
10882 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10883 goto nla_put_failure;
10884 }
10885 nla_nest_end(msg, nest);
10886
10887 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10888 if (!nest)
10889 goto nla_put_failure;
10890 for (i = 0; i < req->n_channels; i++) {
10891 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10892 goto nla_put_failure;
10893 }
10894 nla_nest_end(msg, nest);
10895
10896 if (req->ie &&
10897 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10898 goto nla_put_failure;
10899
10900 if (req->flags &&
10901 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10902 goto nla_put_failure;
10903
10904 return 0;
10905 nla_put_failure:
10906 return -ENOBUFS;
10907 }
10908
10909 static int nl80211_send_scan_msg(struct sk_buff *msg,
10910 struct cfg80211_registered_device *rdev,
10911 struct wireless_dev *wdev,
10912 u32 portid, u32 seq, int flags,
10913 u32 cmd)
10914 {
10915 void *hdr;
10916
10917 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10918 if (!hdr)
10919 return -1;
10920
10921 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10922 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10923 wdev->netdev->ifindex)) ||
10924 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10925 goto nla_put_failure;
10926
10927 /* ignore errors and send incomplete event anyway */
10928 nl80211_add_scan_req(msg, rdev);
10929
10930 return genlmsg_end(msg, hdr);
10931
10932 nla_put_failure:
10933 genlmsg_cancel(msg, hdr);
10934 return -EMSGSIZE;
10935 }
10936
10937 static int
10938 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10939 struct cfg80211_registered_device *rdev,
10940 struct net_device *netdev,
10941 u32 portid, u32 seq, int flags, u32 cmd)
10942 {
10943 void *hdr;
10944
10945 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10946 if (!hdr)
10947 return -1;
10948
10949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10951 goto nla_put_failure;
10952
10953 return genlmsg_end(msg, hdr);
10954
10955 nla_put_failure:
10956 genlmsg_cancel(msg, hdr);
10957 return -EMSGSIZE;
10958 }
10959
10960 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10961 struct wireless_dev *wdev)
10962 {
10963 struct sk_buff *msg;
10964
10965 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10966 if (!msg)
10967 return;
10968
10969 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10970 NL80211_CMD_TRIGGER_SCAN) < 0) {
10971 nlmsg_free(msg);
10972 return;
10973 }
10974
10975 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10976 NL80211_MCGRP_SCAN, GFP_KERNEL);
10977 }
10978
10979 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10980 struct wireless_dev *wdev, bool aborted)
10981 {
10982 struct sk_buff *msg;
10983
10984 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10985 if (!msg)
10986 return NULL;
10987
10988 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10989 aborted ? NL80211_CMD_SCAN_ABORTED :
10990 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10991 nlmsg_free(msg);
10992 return NULL;
10993 }
10994
10995 return msg;
10996 }
10997
10998 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10999 struct sk_buff *msg)
11000 {
11001 if (!msg)
11002 return;
11003
11004 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11005 NL80211_MCGRP_SCAN, GFP_KERNEL);
11006 }
11007
11008 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11009 struct net_device *netdev)
11010 {
11011 struct sk_buff *msg;
11012
11013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11014 if (!msg)
11015 return;
11016
11017 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11018 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11019 nlmsg_free(msg);
11020 return;
11021 }
11022
11023 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11024 NL80211_MCGRP_SCAN, GFP_KERNEL);
11025 }
11026
11027 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11028 struct net_device *netdev, u32 cmd)
11029 {
11030 struct sk_buff *msg;
11031
11032 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11033 if (!msg)
11034 return;
11035
11036 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11037 nlmsg_free(msg);
11038 return;
11039 }
11040
11041 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11042 NL80211_MCGRP_SCAN, GFP_KERNEL);
11043 }
11044
11045 /*
11046 * This can happen on global regulatory changes or device specific settings
11047 * based on custom world regulatory domains.
11048 */
11049 void nl80211_send_reg_change_event(struct regulatory_request *request)
11050 {
11051 struct sk_buff *msg;
11052 void *hdr;
11053
11054 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11055 if (!msg)
11056 return;
11057
11058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
11059 if (!hdr) {
11060 nlmsg_free(msg);
11061 return;
11062 }
11063
11064 /* Userspace can always count this one always being set */
11065 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11066 goto nla_put_failure;
11067
11068 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11069 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11070 NL80211_REGDOM_TYPE_WORLD))
11071 goto nla_put_failure;
11072 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11073 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11074 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11075 goto nla_put_failure;
11076 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11077 request->intersect) {
11078 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11079 NL80211_REGDOM_TYPE_INTERSECTION))
11080 goto nla_put_failure;
11081 } else {
11082 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11083 NL80211_REGDOM_TYPE_COUNTRY) ||
11084 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11085 request->alpha2))
11086 goto nla_put_failure;
11087 }
11088
11089 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11090 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11091
11092 if (wiphy &&
11093 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11094 goto nla_put_failure;
11095 }
11096
11097 genlmsg_end(msg, hdr);
11098
11099 rcu_read_lock();
11100 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11101 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11102 rcu_read_unlock();
11103
11104 return;
11105
11106 nla_put_failure:
11107 genlmsg_cancel(msg, hdr);
11108 nlmsg_free(msg);
11109 }
11110
11111 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11112 struct net_device *netdev,
11113 const u8 *buf, size_t len,
11114 enum nl80211_commands cmd, gfp_t gfp,
11115 int uapsd_queues)
11116 {
11117 struct sk_buff *msg;
11118 void *hdr;
11119
11120 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11121 if (!msg)
11122 return;
11123
11124 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11125 if (!hdr) {
11126 nlmsg_free(msg);
11127 return;
11128 }
11129
11130 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11131 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11132 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11133 goto nla_put_failure;
11134
11135 if (uapsd_queues >= 0) {
11136 struct nlattr *nla_wmm =
11137 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11138 if (!nla_wmm)
11139 goto nla_put_failure;
11140
11141 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11142 uapsd_queues))
11143 goto nla_put_failure;
11144
11145 nla_nest_end(msg, nla_wmm);
11146 }
11147
11148 genlmsg_end(msg, hdr);
11149
11150 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11151 NL80211_MCGRP_MLME, gfp);
11152 return;
11153
11154 nla_put_failure:
11155 genlmsg_cancel(msg, hdr);
11156 nlmsg_free(msg);
11157 }
11158
11159 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11160 struct net_device *netdev, const u8 *buf,
11161 size_t len, gfp_t gfp)
11162 {
11163 nl80211_send_mlme_event(rdev, netdev, buf, len,
11164 NL80211_CMD_AUTHENTICATE, gfp, -1);
11165 }
11166
11167 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11168 struct net_device *netdev, const u8 *buf,
11169 size_t len, gfp_t gfp, int uapsd_queues)
11170 {
11171 nl80211_send_mlme_event(rdev, netdev, buf, len,
11172 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11173 }
11174
11175 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11176 struct net_device *netdev, const u8 *buf,
11177 size_t len, gfp_t gfp)
11178 {
11179 nl80211_send_mlme_event(rdev, netdev, buf, len,
11180 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11181 }
11182
11183 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11184 struct net_device *netdev, const u8 *buf,
11185 size_t len, gfp_t gfp)
11186 {
11187 nl80211_send_mlme_event(rdev, netdev, buf, len,
11188 NL80211_CMD_DISASSOCIATE, gfp, -1);
11189 }
11190
11191 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11192 size_t len)
11193 {
11194 struct wireless_dev *wdev = dev->ieee80211_ptr;
11195 struct wiphy *wiphy = wdev->wiphy;
11196 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11197 const struct ieee80211_mgmt *mgmt = (void *)buf;
11198 u32 cmd;
11199
11200 if (WARN_ON(len < 2))
11201 return;
11202
11203 if (ieee80211_is_deauth(mgmt->frame_control))
11204 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11205 else
11206 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11207
11208 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11209 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11210 }
11211 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11212
11213 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11214 struct net_device *netdev, int cmd,
11215 const u8 *addr, gfp_t gfp)
11216 {
11217 struct sk_buff *msg;
11218 void *hdr;
11219
11220 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11221 if (!msg)
11222 return;
11223
11224 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11225 if (!hdr) {
11226 nlmsg_free(msg);
11227 return;
11228 }
11229
11230 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11231 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11232 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11233 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11234 goto nla_put_failure;
11235
11236 genlmsg_end(msg, hdr);
11237
11238 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11239 NL80211_MCGRP_MLME, gfp);
11240 return;
11241
11242 nla_put_failure:
11243 genlmsg_cancel(msg, hdr);
11244 nlmsg_free(msg);
11245 }
11246
11247 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11248 struct net_device *netdev, const u8 *addr,
11249 gfp_t gfp)
11250 {
11251 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11252 addr, gfp);
11253 }
11254
11255 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11256 struct net_device *netdev, const u8 *addr,
11257 gfp_t gfp)
11258 {
11259 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11260 addr, gfp);
11261 }
11262
11263 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11264 struct net_device *netdev, const u8 *bssid,
11265 const u8 *req_ie, size_t req_ie_len,
11266 const u8 *resp_ie, size_t resp_ie_len,
11267 u16 status, gfp_t gfp)
11268 {
11269 struct sk_buff *msg;
11270 void *hdr;
11271
11272 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11273 if (!msg)
11274 return;
11275
11276 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11277 if (!hdr) {
11278 nlmsg_free(msg);
11279 return;
11280 }
11281
11282 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11283 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11284 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11285 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11286 (req_ie &&
11287 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11288 (resp_ie &&
11289 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11290 goto nla_put_failure;
11291
11292 genlmsg_end(msg, hdr);
11293
11294 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11295 NL80211_MCGRP_MLME, gfp);
11296 return;
11297
11298 nla_put_failure:
11299 genlmsg_cancel(msg, hdr);
11300 nlmsg_free(msg);
11301
11302 }
11303
11304 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11305 struct net_device *netdev, const u8 *bssid,
11306 const u8 *req_ie, size_t req_ie_len,
11307 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11308 {
11309 struct sk_buff *msg;
11310 void *hdr;
11311
11312 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11313 if (!msg)
11314 return;
11315
11316 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11317 if (!hdr) {
11318 nlmsg_free(msg);
11319 return;
11320 }
11321
11322 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11323 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11324 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11325 (req_ie &&
11326 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11327 (resp_ie &&
11328 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11329 goto nla_put_failure;
11330
11331 genlmsg_end(msg, hdr);
11332
11333 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11334 NL80211_MCGRP_MLME, gfp);
11335 return;
11336
11337 nla_put_failure:
11338 genlmsg_cancel(msg, hdr);
11339 nlmsg_free(msg);
11340
11341 }
11342
11343 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11344 struct net_device *netdev, u16 reason,
11345 const u8 *ie, size_t ie_len, bool from_ap)
11346 {
11347 struct sk_buff *msg;
11348 void *hdr;
11349
11350 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11351 if (!msg)
11352 return;
11353
11354 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11355 if (!hdr) {
11356 nlmsg_free(msg);
11357 return;
11358 }
11359
11360 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11361 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11362 (from_ap && reason &&
11363 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11364 (from_ap &&
11365 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11366 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11367 goto nla_put_failure;
11368
11369 genlmsg_end(msg, hdr);
11370
11371 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11372 NL80211_MCGRP_MLME, GFP_KERNEL);
11373 return;
11374
11375 nla_put_failure:
11376 genlmsg_cancel(msg, hdr);
11377 nlmsg_free(msg);
11378
11379 }
11380
11381 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11382 struct net_device *netdev, const u8 *bssid,
11383 gfp_t gfp)
11384 {
11385 struct sk_buff *msg;
11386 void *hdr;
11387
11388 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11389 if (!msg)
11390 return;
11391
11392 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11393 if (!hdr) {
11394 nlmsg_free(msg);
11395 return;
11396 }
11397
11398 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11399 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11400 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11401 goto nla_put_failure;
11402
11403 genlmsg_end(msg, hdr);
11404
11405 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11406 NL80211_MCGRP_MLME, gfp);
11407 return;
11408
11409 nla_put_failure:
11410 genlmsg_cancel(msg, hdr);
11411 nlmsg_free(msg);
11412 }
11413
11414 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11415 const u8* ie, u8 ie_len, gfp_t gfp)
11416 {
11417 struct wireless_dev *wdev = dev->ieee80211_ptr;
11418 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11419 struct sk_buff *msg;
11420 void *hdr;
11421
11422 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11423 return;
11424
11425 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11426
11427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11428 if (!msg)
11429 return;
11430
11431 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11432 if (!hdr) {
11433 nlmsg_free(msg);
11434 return;
11435 }
11436
11437 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11438 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11439 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11440 (ie_len && ie &&
11441 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11442 goto nla_put_failure;
11443
11444 genlmsg_end(msg, hdr);
11445
11446 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11447 NL80211_MCGRP_MLME, gfp);
11448 return;
11449
11450 nla_put_failure:
11451 genlmsg_cancel(msg, hdr);
11452 nlmsg_free(msg);
11453 }
11454 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11455
11456 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11457 struct net_device *netdev, const u8 *addr,
11458 enum nl80211_key_type key_type, int key_id,
11459 const u8 *tsc, gfp_t gfp)
11460 {
11461 struct sk_buff *msg;
11462 void *hdr;
11463
11464 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11465 if (!msg)
11466 return;
11467
11468 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11469 if (!hdr) {
11470 nlmsg_free(msg);
11471 return;
11472 }
11473
11474 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11475 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11476 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11477 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11478 (key_id != -1 &&
11479 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11480 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11481 goto nla_put_failure;
11482
11483 genlmsg_end(msg, hdr);
11484
11485 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11486 NL80211_MCGRP_MLME, gfp);
11487 return;
11488
11489 nla_put_failure:
11490 genlmsg_cancel(msg, hdr);
11491 nlmsg_free(msg);
11492 }
11493
11494 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11495 struct ieee80211_channel *channel_before,
11496 struct ieee80211_channel *channel_after)
11497 {
11498 struct sk_buff *msg;
11499 void *hdr;
11500 struct nlattr *nl_freq;
11501
11502 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11503 if (!msg)
11504 return;
11505
11506 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11507 if (!hdr) {
11508 nlmsg_free(msg);
11509 return;
11510 }
11511
11512 /*
11513 * Since we are applying the beacon hint to a wiphy we know its
11514 * wiphy_idx is valid
11515 */
11516 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11517 goto nla_put_failure;
11518
11519 /* Before */
11520 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11521 if (!nl_freq)
11522 goto nla_put_failure;
11523 if (nl80211_msg_put_channel(msg, channel_before, false))
11524 goto nla_put_failure;
11525 nla_nest_end(msg, nl_freq);
11526
11527 /* After */
11528 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11529 if (!nl_freq)
11530 goto nla_put_failure;
11531 if (nl80211_msg_put_channel(msg, channel_after, false))
11532 goto nla_put_failure;
11533 nla_nest_end(msg, nl_freq);
11534
11535 genlmsg_end(msg, hdr);
11536
11537 rcu_read_lock();
11538 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11539 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11540 rcu_read_unlock();
11541
11542 return;
11543
11544 nla_put_failure:
11545 genlmsg_cancel(msg, hdr);
11546 nlmsg_free(msg);
11547 }
11548
11549 static void nl80211_send_remain_on_chan_event(
11550 int cmd, struct cfg80211_registered_device *rdev,
11551 struct wireless_dev *wdev, u64 cookie,
11552 struct ieee80211_channel *chan,
11553 unsigned int duration, gfp_t gfp)
11554 {
11555 struct sk_buff *msg;
11556 void *hdr;
11557
11558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11559 if (!msg)
11560 return;
11561
11562 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11563 if (!hdr) {
11564 nlmsg_free(msg);
11565 return;
11566 }
11567
11568 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11569 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11570 wdev->netdev->ifindex)) ||
11571 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11572 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11573 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11574 NL80211_CHAN_NO_HT) ||
11575 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11576 goto nla_put_failure;
11577
11578 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11579 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11580 goto nla_put_failure;
11581
11582 genlmsg_end(msg, hdr);
11583
11584 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11585 NL80211_MCGRP_MLME, gfp);
11586 return;
11587
11588 nla_put_failure:
11589 genlmsg_cancel(msg, hdr);
11590 nlmsg_free(msg);
11591 }
11592
11593 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11594 struct ieee80211_channel *chan,
11595 unsigned int duration, gfp_t gfp)
11596 {
11597 struct wiphy *wiphy = wdev->wiphy;
11598 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11599
11600 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11601 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11602 rdev, wdev, cookie, chan,
11603 duration, gfp);
11604 }
11605 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11606
11607 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11608 struct ieee80211_channel *chan,
11609 gfp_t gfp)
11610 {
11611 struct wiphy *wiphy = wdev->wiphy;
11612 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11613
11614 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11615 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11616 rdev, wdev, cookie, chan, 0, gfp);
11617 }
11618 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11619
11620 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11621 struct station_info *sinfo, gfp_t gfp)
11622 {
11623 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11624 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11625 struct sk_buff *msg;
11626
11627 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11628
11629 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11630 if (!msg)
11631 return;
11632
11633 if (nl80211_send_station(msg, 0, 0, 0,
11634 rdev, dev, mac_addr, sinfo) < 0) {
11635 nlmsg_free(msg);
11636 return;
11637 }
11638
11639 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11640 NL80211_MCGRP_MLME, gfp);
11641 }
11642 EXPORT_SYMBOL(cfg80211_new_sta);
11643
11644 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11645 {
11646 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11647 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11648 struct sk_buff *msg;
11649 void *hdr;
11650
11651 trace_cfg80211_del_sta(dev, mac_addr);
11652
11653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11654 if (!msg)
11655 return;
11656
11657 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11658 if (!hdr) {
11659 nlmsg_free(msg);
11660 return;
11661 }
11662
11663 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11664 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11665 goto nla_put_failure;
11666
11667 genlmsg_end(msg, hdr);
11668
11669 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11670 NL80211_MCGRP_MLME, gfp);
11671 return;
11672
11673 nla_put_failure:
11674 genlmsg_cancel(msg, hdr);
11675 nlmsg_free(msg);
11676 }
11677 EXPORT_SYMBOL(cfg80211_del_sta);
11678
11679 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11680 enum nl80211_connect_failed_reason reason,
11681 gfp_t gfp)
11682 {
11683 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11684 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11685 struct sk_buff *msg;
11686 void *hdr;
11687
11688 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11689 if (!msg)
11690 return;
11691
11692 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11693 if (!hdr) {
11694 nlmsg_free(msg);
11695 return;
11696 }
11697
11698 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11699 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11700 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11701 goto nla_put_failure;
11702
11703 genlmsg_end(msg, hdr);
11704
11705 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11706 NL80211_MCGRP_MLME, gfp);
11707 return;
11708
11709 nla_put_failure:
11710 genlmsg_cancel(msg, hdr);
11711 nlmsg_free(msg);
11712 }
11713 EXPORT_SYMBOL(cfg80211_conn_failed);
11714
11715 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11716 const u8 *addr, gfp_t gfp)
11717 {
11718 struct wireless_dev *wdev = dev->ieee80211_ptr;
11719 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11720 struct sk_buff *msg;
11721 void *hdr;
11722 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11723
11724 if (!nlportid)
11725 return false;
11726
11727 msg = nlmsg_new(100, gfp);
11728 if (!msg)
11729 return true;
11730
11731 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11732 if (!hdr) {
11733 nlmsg_free(msg);
11734 return true;
11735 }
11736
11737 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11738 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11739 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11740 goto nla_put_failure;
11741
11742 genlmsg_end(msg, hdr);
11743 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11744 return true;
11745
11746 nla_put_failure:
11747 genlmsg_cancel(msg, hdr);
11748 nlmsg_free(msg);
11749 return true;
11750 }
11751
11752 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11753 const u8 *addr, gfp_t gfp)
11754 {
11755 struct wireless_dev *wdev = dev->ieee80211_ptr;
11756 bool ret;
11757
11758 trace_cfg80211_rx_spurious_frame(dev, addr);
11759
11760 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11761 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11762 trace_cfg80211_return_bool(false);
11763 return false;
11764 }
11765 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11766 addr, gfp);
11767 trace_cfg80211_return_bool(ret);
11768 return ret;
11769 }
11770 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11771
11772 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11773 const u8 *addr, gfp_t gfp)
11774 {
11775 struct wireless_dev *wdev = dev->ieee80211_ptr;
11776 bool ret;
11777
11778 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11779
11780 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11781 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11782 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11783 trace_cfg80211_return_bool(false);
11784 return false;
11785 }
11786 ret = __nl80211_unexpected_frame(dev,
11787 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11788 addr, gfp);
11789 trace_cfg80211_return_bool(ret);
11790 return ret;
11791 }
11792 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11793
11794 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11795 struct wireless_dev *wdev, u32 nlportid,
11796 int freq, int sig_dbm,
11797 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11798 {
11799 struct net_device *netdev = wdev->netdev;
11800 struct sk_buff *msg;
11801 void *hdr;
11802
11803 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11804 if (!msg)
11805 return -ENOMEM;
11806
11807 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11808 if (!hdr) {
11809 nlmsg_free(msg);
11810 return -ENOMEM;
11811 }
11812
11813 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11814 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11815 netdev->ifindex)) ||
11816 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11817 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11818 (sig_dbm &&
11819 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11820 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11821 (flags &&
11822 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11823 goto nla_put_failure;
11824
11825 genlmsg_end(msg, hdr);
11826
11827 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11828
11829 nla_put_failure:
11830 genlmsg_cancel(msg, hdr);
11831 nlmsg_free(msg);
11832 return -ENOBUFS;
11833 }
11834
11835 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11836 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11837 {
11838 struct wiphy *wiphy = wdev->wiphy;
11839 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11840 struct net_device *netdev = wdev->netdev;
11841 struct sk_buff *msg;
11842 void *hdr;
11843
11844 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11845
11846 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11847 if (!msg)
11848 return;
11849
11850 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11851 if (!hdr) {
11852 nlmsg_free(msg);
11853 return;
11854 }
11855
11856 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11857 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11858 netdev->ifindex)) ||
11859 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11860 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11861 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11862 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11863 goto nla_put_failure;
11864
11865 genlmsg_end(msg, hdr);
11866
11867 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11868 NL80211_MCGRP_MLME, gfp);
11869 return;
11870
11871 nla_put_failure:
11872 genlmsg_cancel(msg, hdr);
11873 nlmsg_free(msg);
11874 }
11875 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11876
11877 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11878 const char *mac, gfp_t gfp)
11879 {
11880 struct wireless_dev *wdev = dev->ieee80211_ptr;
11881 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11882 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11883 void **cb;
11884
11885 if (!msg)
11886 return NULL;
11887
11888 cb = (void **)msg->cb;
11889
11890 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11891 if (!cb[0]) {
11892 nlmsg_free(msg);
11893 return NULL;
11894 }
11895
11896 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11897 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11898 goto nla_put_failure;
11899
11900 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11901 goto nla_put_failure;
11902
11903 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11904 if (!cb[1])
11905 goto nla_put_failure;
11906
11907 cb[2] = rdev;
11908
11909 return msg;
11910 nla_put_failure:
11911 nlmsg_free(msg);
11912 return NULL;
11913 }
11914
11915 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11916 {
11917 void **cb = (void **)msg->cb;
11918 struct cfg80211_registered_device *rdev = cb[2];
11919
11920 nla_nest_end(msg, cb[1]);
11921 genlmsg_end(msg, cb[0]);
11922
11923 memset(msg->cb, 0, sizeof(msg->cb));
11924
11925 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11926 NL80211_MCGRP_MLME, gfp);
11927 }
11928
11929 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11930 enum nl80211_cqm_rssi_threshold_event rssi_event,
11931 gfp_t gfp)
11932 {
11933 struct sk_buff *msg;
11934
11935 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11936
11937 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11938 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11939 return;
11940
11941 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11942 if (!msg)
11943 return;
11944
11945 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11946 rssi_event))
11947 goto nla_put_failure;
11948
11949 cfg80211_send_cqm(msg, gfp);
11950
11951 return;
11952
11953 nla_put_failure:
11954 nlmsg_free(msg);
11955 }
11956 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11957
11958 void cfg80211_cqm_txe_notify(struct net_device *dev,
11959 const u8 *peer, u32 num_packets,
11960 u32 rate, u32 intvl, gfp_t gfp)
11961 {
11962 struct sk_buff *msg;
11963
11964 msg = cfg80211_prepare_cqm(dev, peer, gfp);
11965 if (!msg)
11966 return;
11967
11968 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11969 goto nla_put_failure;
11970
11971 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11972 goto nla_put_failure;
11973
11974 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11975 goto nla_put_failure;
11976
11977 cfg80211_send_cqm(msg, gfp);
11978 return;
11979
11980 nla_put_failure:
11981 nlmsg_free(msg);
11982 }
11983 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11984
11985 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11986 const u8 *peer, u32 num_packets, gfp_t gfp)
11987 {
11988 struct sk_buff *msg;
11989
11990 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11991
11992 msg = cfg80211_prepare_cqm(dev, peer, gfp);
11993 if (!msg)
11994 return;
11995
11996 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11997 goto nla_put_failure;
11998
11999 cfg80211_send_cqm(msg, gfp);
12000 return;
12001
12002 nla_put_failure:
12003 nlmsg_free(msg);
12004 }
12005 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12006
12007 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12008 {
12009 struct sk_buff *msg;
12010
12011 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12012 if (!msg)
12013 return;
12014
12015 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12016 goto nla_put_failure;
12017
12018 cfg80211_send_cqm(msg, gfp);
12019 return;
12020
12021 nla_put_failure:
12022 nlmsg_free(msg);
12023 }
12024 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12025
12026 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12027 struct net_device *netdev, const u8 *bssid,
12028 const u8 *replay_ctr, gfp_t gfp)
12029 {
12030 struct sk_buff *msg;
12031 struct nlattr *rekey_attr;
12032 void *hdr;
12033
12034 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12035 if (!msg)
12036 return;
12037
12038 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12039 if (!hdr) {
12040 nlmsg_free(msg);
12041 return;
12042 }
12043
12044 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12045 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12046 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12047 goto nla_put_failure;
12048
12049 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12050 if (!rekey_attr)
12051 goto nla_put_failure;
12052
12053 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12054 NL80211_REPLAY_CTR_LEN, replay_ctr))
12055 goto nla_put_failure;
12056
12057 nla_nest_end(msg, rekey_attr);
12058
12059 genlmsg_end(msg, hdr);
12060
12061 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12062 NL80211_MCGRP_MLME, gfp);
12063 return;
12064
12065 nla_put_failure:
12066 genlmsg_cancel(msg, hdr);
12067 nlmsg_free(msg);
12068 }
12069
12070 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12071 const u8 *replay_ctr, gfp_t gfp)
12072 {
12073 struct wireless_dev *wdev = dev->ieee80211_ptr;
12074 struct wiphy *wiphy = wdev->wiphy;
12075 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12076
12077 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12078 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12079 }
12080 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12081
12082 static void
12083 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12084 struct net_device *netdev, int index,
12085 const u8 *bssid, bool preauth, gfp_t gfp)
12086 {
12087 struct sk_buff *msg;
12088 struct nlattr *attr;
12089 void *hdr;
12090
12091 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12092 if (!msg)
12093 return;
12094
12095 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12096 if (!hdr) {
12097 nlmsg_free(msg);
12098 return;
12099 }
12100
12101 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12102 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12103 goto nla_put_failure;
12104
12105 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12106 if (!attr)
12107 goto nla_put_failure;
12108
12109 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12110 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12111 (preauth &&
12112 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12113 goto nla_put_failure;
12114
12115 nla_nest_end(msg, attr);
12116
12117 genlmsg_end(msg, hdr);
12118
12119 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12120 NL80211_MCGRP_MLME, gfp);
12121 return;
12122
12123 nla_put_failure:
12124 genlmsg_cancel(msg, hdr);
12125 nlmsg_free(msg);
12126 }
12127
12128 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12129 const u8 *bssid, bool preauth, gfp_t gfp)
12130 {
12131 struct wireless_dev *wdev = dev->ieee80211_ptr;
12132 struct wiphy *wiphy = wdev->wiphy;
12133 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12134
12135 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12136 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12137 }
12138 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12139
12140 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12141 struct net_device *netdev,
12142 struct cfg80211_chan_def *chandef,
12143 gfp_t gfp,
12144 enum nl80211_commands notif,
12145 u8 count)
12146 {
12147 struct sk_buff *msg;
12148 void *hdr;
12149
12150 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12151 if (!msg)
12152 return;
12153
12154 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12155 if (!hdr) {
12156 nlmsg_free(msg);
12157 return;
12158 }
12159
12160 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12161 goto nla_put_failure;
12162
12163 if (nl80211_send_chandef(msg, chandef))
12164 goto nla_put_failure;
12165
12166 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12167 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12168 goto nla_put_failure;
12169
12170 genlmsg_end(msg, hdr);
12171
12172 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12173 NL80211_MCGRP_MLME, gfp);
12174 return;
12175
12176 nla_put_failure:
12177 genlmsg_cancel(msg, hdr);
12178 nlmsg_free(msg);
12179 }
12180
12181 void cfg80211_ch_switch_notify(struct net_device *dev,
12182 struct cfg80211_chan_def *chandef)
12183 {
12184 struct wireless_dev *wdev = dev->ieee80211_ptr;
12185 struct wiphy *wiphy = wdev->wiphy;
12186 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12187
12188 ASSERT_WDEV_LOCK(wdev);
12189
12190 trace_cfg80211_ch_switch_notify(dev, chandef);
12191
12192 wdev->chandef = *chandef;
12193 wdev->preset_chandef = *chandef;
12194 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12195 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12196 }
12197 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12198
12199 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12200 struct cfg80211_chan_def *chandef,
12201 u8 count)
12202 {
12203 struct wireless_dev *wdev = dev->ieee80211_ptr;
12204 struct wiphy *wiphy = wdev->wiphy;
12205 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12206
12207 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12208
12209 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12210 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12211 }
12212 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12213
12214 void
12215 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12216 const struct cfg80211_chan_def *chandef,
12217 enum nl80211_radar_event event,
12218 struct net_device *netdev, gfp_t gfp)
12219 {
12220 struct sk_buff *msg;
12221 void *hdr;
12222
12223 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12224 if (!msg)
12225 return;
12226
12227 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12228 if (!hdr) {
12229 nlmsg_free(msg);
12230 return;
12231 }
12232
12233 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12234 goto nla_put_failure;
12235
12236 /* NOP and radar events don't need a netdev parameter */
12237 if (netdev) {
12238 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12239
12240 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12241 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12242 goto nla_put_failure;
12243 }
12244
12245 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12246 goto nla_put_failure;
12247
12248 if (nl80211_send_chandef(msg, chandef))
12249 goto nla_put_failure;
12250
12251 genlmsg_end(msg, hdr);
12252
12253 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12254 NL80211_MCGRP_MLME, gfp);
12255 return;
12256
12257 nla_put_failure:
12258 genlmsg_cancel(msg, hdr);
12259 nlmsg_free(msg);
12260 }
12261
12262 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12263 u64 cookie, bool acked, gfp_t gfp)
12264 {
12265 struct wireless_dev *wdev = dev->ieee80211_ptr;
12266 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12267 struct sk_buff *msg;
12268 void *hdr;
12269
12270 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12271
12272 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12273
12274 if (!msg)
12275 return;
12276
12277 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12278 if (!hdr) {
12279 nlmsg_free(msg);
12280 return;
12281 }
12282
12283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12284 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12285 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12286 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12287 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12288 goto nla_put_failure;
12289
12290 genlmsg_end(msg, hdr);
12291
12292 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12293 NL80211_MCGRP_MLME, gfp);
12294 return;
12295
12296 nla_put_failure:
12297 genlmsg_cancel(msg, hdr);
12298 nlmsg_free(msg);
12299 }
12300 EXPORT_SYMBOL(cfg80211_probe_status);
12301
12302 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12303 const u8 *frame, size_t len,
12304 int freq, int sig_dbm)
12305 {
12306 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12307 struct sk_buff *msg;
12308 void *hdr;
12309 struct cfg80211_beacon_registration *reg;
12310
12311 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12312
12313 spin_lock_bh(&rdev->beacon_registrations_lock);
12314 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12315 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12316 if (!msg) {
12317 spin_unlock_bh(&rdev->beacon_registrations_lock);
12318 return;
12319 }
12320
12321 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12322 if (!hdr)
12323 goto nla_put_failure;
12324
12325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12326 (freq &&
12327 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12328 (sig_dbm &&
12329 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12330 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12331 goto nla_put_failure;
12332
12333 genlmsg_end(msg, hdr);
12334
12335 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12336 }
12337 spin_unlock_bh(&rdev->beacon_registrations_lock);
12338 return;
12339
12340 nla_put_failure:
12341 spin_unlock_bh(&rdev->beacon_registrations_lock);
12342 if (hdr)
12343 genlmsg_cancel(msg, hdr);
12344 nlmsg_free(msg);
12345 }
12346 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12347
12348 #ifdef CONFIG_PM
12349 static int cfg80211_net_detect_results(struct sk_buff *msg,
12350 struct cfg80211_wowlan_wakeup *wakeup)
12351 {
12352 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12353 struct nlattr *nl_results, *nl_match, *nl_freqs;
12354 int i, j;
12355
12356 nl_results = nla_nest_start(
12357 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12358 if (!nl_results)
12359 return -EMSGSIZE;
12360
12361 for (i = 0; i < nd->n_matches; i++) {
12362 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12363
12364 nl_match = nla_nest_start(msg, i);
12365 if (!nl_match)
12366 break;
12367
12368 /* The SSID attribute is optional in nl80211, but for
12369 * simplicity reasons it's always present in the
12370 * cfg80211 structure. If a driver can't pass the
12371 * SSID, that needs to be changed. A zero length SSID
12372 * is still a valid SSID (wildcard), so it cannot be
12373 * used for this purpose.
12374 */
12375 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12376 match->ssid.ssid)) {
12377 nla_nest_cancel(msg, nl_match);
12378 goto out;
12379 }
12380
12381 if (match->n_channels) {
12382 nl_freqs = nla_nest_start(
12383 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12384 if (!nl_freqs) {
12385 nla_nest_cancel(msg, nl_match);
12386 goto out;
12387 }
12388
12389 for (j = 0; j < match->n_channels; j++) {
12390 if (nla_put_u32(msg,
12391 NL80211_ATTR_WIPHY_FREQ,
12392 match->channels[j])) {
12393 nla_nest_cancel(msg, nl_freqs);
12394 nla_nest_cancel(msg, nl_match);
12395 goto out;
12396 }
12397 }
12398
12399 nla_nest_end(msg, nl_freqs);
12400 }
12401
12402 nla_nest_end(msg, nl_match);
12403 }
12404
12405 out:
12406 nla_nest_end(msg, nl_results);
12407 return 0;
12408 }
12409
12410 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12411 struct cfg80211_wowlan_wakeup *wakeup,
12412 gfp_t gfp)
12413 {
12414 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12415 struct sk_buff *msg;
12416 void *hdr;
12417 int size = 200;
12418
12419 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12420
12421 if (wakeup)
12422 size += wakeup->packet_present_len;
12423
12424 msg = nlmsg_new(size, gfp);
12425 if (!msg)
12426 return;
12427
12428 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12429 if (!hdr)
12430 goto free_msg;
12431
12432 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12433 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12434 goto free_msg;
12435
12436 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12437 wdev->netdev->ifindex))
12438 goto free_msg;
12439
12440 if (wakeup) {
12441 struct nlattr *reasons;
12442
12443 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12444 if (!reasons)
12445 goto free_msg;
12446
12447 if (wakeup->disconnect &&
12448 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12449 goto free_msg;
12450 if (wakeup->magic_pkt &&
12451 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12452 goto free_msg;
12453 if (wakeup->gtk_rekey_failure &&
12454 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12455 goto free_msg;
12456 if (wakeup->eap_identity_req &&
12457 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12458 goto free_msg;
12459 if (wakeup->four_way_handshake &&
12460 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12461 goto free_msg;
12462 if (wakeup->rfkill_release &&
12463 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12464 goto free_msg;
12465
12466 if (wakeup->pattern_idx >= 0 &&
12467 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12468 wakeup->pattern_idx))
12469 goto free_msg;
12470
12471 if (wakeup->tcp_match &&
12472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12473 goto free_msg;
12474
12475 if (wakeup->tcp_connlost &&
12476 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12477 goto free_msg;
12478
12479 if (wakeup->tcp_nomoretokens &&
12480 nla_put_flag(msg,
12481 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12482 goto free_msg;
12483
12484 if (wakeup->packet) {
12485 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12486 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12487
12488 if (!wakeup->packet_80211) {
12489 pkt_attr =
12490 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12491 len_attr =
12492 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12493 }
12494
12495 if (wakeup->packet_len &&
12496 nla_put_u32(msg, len_attr, wakeup->packet_len))
12497 goto free_msg;
12498
12499 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12500 wakeup->packet))
12501 goto free_msg;
12502 }
12503
12504 if (wakeup->net_detect &&
12505 cfg80211_net_detect_results(msg, wakeup))
12506 goto free_msg;
12507
12508 nla_nest_end(msg, reasons);
12509 }
12510
12511 genlmsg_end(msg, hdr);
12512
12513 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12514 NL80211_MCGRP_MLME, gfp);
12515 return;
12516
12517 free_msg:
12518 nlmsg_free(msg);
12519 }
12520 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12521 #endif
12522
12523 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12524 enum nl80211_tdls_operation oper,
12525 u16 reason_code, gfp_t gfp)
12526 {
12527 struct wireless_dev *wdev = dev->ieee80211_ptr;
12528 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12529 struct sk_buff *msg;
12530 void *hdr;
12531
12532 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12533 reason_code);
12534
12535 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12536 if (!msg)
12537 return;
12538
12539 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12540 if (!hdr) {
12541 nlmsg_free(msg);
12542 return;
12543 }
12544
12545 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12546 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12547 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12548 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12549 (reason_code > 0 &&
12550 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12551 goto nla_put_failure;
12552
12553 genlmsg_end(msg, hdr);
12554
12555 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12556 NL80211_MCGRP_MLME, gfp);
12557 return;
12558
12559 nla_put_failure:
12560 genlmsg_cancel(msg, hdr);
12561 nlmsg_free(msg);
12562 }
12563 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12564
12565 static int nl80211_netlink_notify(struct notifier_block * nb,
12566 unsigned long state,
12567 void *_notify)
12568 {
12569 struct netlink_notify *notify = _notify;
12570 struct cfg80211_registered_device *rdev;
12571 struct wireless_dev *wdev;
12572 struct cfg80211_beacon_registration *reg, *tmp;
12573
12574 if (state != NETLINK_URELEASE)
12575 return NOTIFY_DONE;
12576
12577 rcu_read_lock();
12578
12579 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12580 bool schedule_destroy_work = false;
12581
12582 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12583 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12584
12585 if (wdev->owner_nlportid == notify->portid)
12586 schedule_destroy_work = true;
12587 }
12588
12589 spin_lock_bh(&rdev->beacon_registrations_lock);
12590 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12591 list) {
12592 if (reg->nlportid == notify->portid) {
12593 list_del(&reg->list);
12594 kfree(reg);
12595 break;
12596 }
12597 }
12598 spin_unlock_bh(&rdev->beacon_registrations_lock);
12599
12600 if (schedule_destroy_work) {
12601 struct cfg80211_iface_destroy *destroy;
12602
12603 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12604 if (destroy) {
12605 destroy->nlportid = notify->portid;
12606 spin_lock(&rdev->destroy_list_lock);
12607 list_add(&destroy->list, &rdev->destroy_list);
12608 spin_unlock(&rdev->destroy_list_lock);
12609 schedule_work(&rdev->destroy_work);
12610 }
12611 }
12612 }
12613
12614 rcu_read_unlock();
12615
12616 return NOTIFY_OK;
12617 }
12618
12619 static struct notifier_block nl80211_netlink_notifier = {
12620 .notifier_call = nl80211_netlink_notify,
12621 };
12622
12623 void cfg80211_ft_event(struct net_device *netdev,
12624 struct cfg80211_ft_event_params *ft_event)
12625 {
12626 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12627 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12628 struct sk_buff *msg;
12629 void *hdr;
12630
12631 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12632
12633 if (!ft_event->target_ap)
12634 return;
12635
12636 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12637 if (!msg)
12638 return;
12639
12640 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12641 if (!hdr)
12642 goto out;
12643
12644 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12645 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12646 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12647 goto out;
12648
12649 if (ft_event->ies &&
12650 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12651 goto out;
12652 if (ft_event->ric_ies &&
12653 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12654 ft_event->ric_ies))
12655 goto out;
12656
12657 genlmsg_end(msg, hdr);
12658
12659 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12660 NL80211_MCGRP_MLME, GFP_KERNEL);
12661 return;
12662 out:
12663 nlmsg_free(msg);
12664 }
12665 EXPORT_SYMBOL(cfg80211_ft_event);
12666
12667 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12668 {
12669 struct cfg80211_registered_device *rdev;
12670 struct sk_buff *msg;
12671 void *hdr;
12672 u32 nlportid;
12673
12674 rdev = wiphy_to_rdev(wdev->wiphy);
12675 if (!rdev->crit_proto_nlportid)
12676 return;
12677
12678 nlportid = rdev->crit_proto_nlportid;
12679 rdev->crit_proto_nlportid = 0;
12680
12681 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12682 if (!msg)
12683 return;
12684
12685 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12686 if (!hdr)
12687 goto nla_put_failure;
12688
12689 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12690 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12691 goto nla_put_failure;
12692
12693 genlmsg_end(msg, hdr);
12694
12695 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12696 return;
12697
12698 nla_put_failure:
12699 if (hdr)
12700 genlmsg_cancel(msg, hdr);
12701 nlmsg_free(msg);
12702
12703 }
12704 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12705
12706 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12707 {
12708 struct wiphy *wiphy = wdev->wiphy;
12709 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12710 struct sk_buff *msg;
12711 void *hdr;
12712
12713 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12714 if (!msg)
12715 return;
12716
12717 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12718 if (!hdr)
12719 goto out;
12720
12721 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12722 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12723 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12724 goto out;
12725
12726 genlmsg_end(msg, hdr);
12727
12728 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12729 NL80211_MCGRP_MLME, GFP_KERNEL);
12730 return;
12731 out:
12732 nlmsg_free(msg);
12733 }
12734
12735 /* initialisation/exit functions */
12736
12737 int nl80211_init(void)
12738 {
12739 int err;
12740
12741 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12742 nl80211_mcgrps);
12743 if (err)
12744 return err;
12745
12746 err = netlink_register_notifier(&nl80211_netlink_notifier);
12747 if (err)
12748 goto err_out;
12749
12750 return 0;
12751 err_out:
12752 genl_unregister_family(&nl80211_fam);
12753 return err;
12754 }
12755
12756 void nl80211_exit(void)
12757 {
12758 netlink_unregister_notifier(&nl80211_netlink_notifier);
12759 genl_unregister_family(&nl80211_fam);
12760 }
Linux kernel - Deliverables
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