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Merge tag 'stable/for-linus-3.20-rc0-tag' of git://git.kernel.org/pub/scm/linux/kerne...
[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
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 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2858 return -ENOENT;
2859
2860 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2861 if (!msg)
2862 return -ENOMEM;
2863
2864 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2865 NL80211_CMD_NEW_KEY);
2866 if (!hdr)
2867 goto nla_put_failure;
2868
2869 cookie.msg = msg;
2870 cookie.idx = key_idx;
2871
2872 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2873 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2874 goto nla_put_failure;
2875 if (mac_addr &&
2876 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2877 goto nla_put_failure;
2878
2879 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2880 get_key_callback);
2881
2882 if (err)
2883 goto free_msg;
2884
2885 if (cookie.error)
2886 goto nla_put_failure;
2887
2888 genlmsg_end(msg, hdr);
2889 return genlmsg_reply(msg, info);
2890
2891 nla_put_failure:
2892 err = -ENOBUFS;
2893 free_msg:
2894 nlmsg_free(msg);
2895 return err;
2896 }
2897
2898 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2899 {
2900 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2901 struct key_parse key;
2902 int err;
2903 struct net_device *dev = info->user_ptr[1];
2904
2905 err = nl80211_parse_key(info, &key);
2906 if (err)
2907 return err;
2908
2909 if (key.idx < 0)
2910 return -EINVAL;
2911
2912 /* only support setting default key */
2913 if (!key.def && !key.defmgmt)
2914 return -EINVAL;
2915
2916 wdev_lock(dev->ieee80211_ptr);
2917
2918 if (key.def) {
2919 if (!rdev->ops->set_default_key) {
2920 err = -EOPNOTSUPP;
2921 goto out;
2922 }
2923
2924 err = nl80211_key_allowed(dev->ieee80211_ptr);
2925 if (err)
2926 goto out;
2927
2928 err = rdev_set_default_key(rdev, dev, key.idx,
2929 key.def_uni, key.def_multi);
2930
2931 if (err)
2932 goto out;
2933
2934 #ifdef CONFIG_CFG80211_WEXT
2935 dev->ieee80211_ptr->wext.default_key = key.idx;
2936 #endif
2937 } else {
2938 if (key.def_uni || !key.def_multi) {
2939 err = -EINVAL;
2940 goto out;
2941 }
2942
2943 if (!rdev->ops->set_default_mgmt_key) {
2944 err = -EOPNOTSUPP;
2945 goto out;
2946 }
2947
2948 err = nl80211_key_allowed(dev->ieee80211_ptr);
2949 if (err)
2950 goto out;
2951
2952 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2953 if (err)
2954 goto out;
2955
2956 #ifdef CONFIG_CFG80211_WEXT
2957 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2958 #endif
2959 }
2960
2961 out:
2962 wdev_unlock(dev->ieee80211_ptr);
2963
2964 return err;
2965 }
2966
2967 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2968 {
2969 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2970 int err;
2971 struct net_device *dev = info->user_ptr[1];
2972 struct key_parse key;
2973 const u8 *mac_addr = NULL;
2974
2975 err = nl80211_parse_key(info, &key);
2976 if (err)
2977 return err;
2978
2979 if (!key.p.key)
2980 return -EINVAL;
2981
2982 if (info->attrs[NL80211_ATTR_MAC])
2983 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2984
2985 if (key.type == -1) {
2986 if (mac_addr)
2987 key.type = NL80211_KEYTYPE_PAIRWISE;
2988 else
2989 key.type = NL80211_KEYTYPE_GROUP;
2990 }
2991
2992 /* for now */
2993 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2994 key.type != NL80211_KEYTYPE_GROUP)
2995 return -EINVAL;
2996
2997 if (!rdev->ops->add_key)
2998 return -EOPNOTSUPP;
2999
3000 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3001 key.type == NL80211_KEYTYPE_PAIRWISE,
3002 mac_addr))
3003 return -EINVAL;
3004
3005 wdev_lock(dev->ieee80211_ptr);
3006 err = nl80211_key_allowed(dev->ieee80211_ptr);
3007 if (!err)
3008 err = rdev_add_key(rdev, dev, key.idx,
3009 key.type == NL80211_KEYTYPE_PAIRWISE,
3010 mac_addr, &key.p);
3011 wdev_unlock(dev->ieee80211_ptr);
3012
3013 return err;
3014 }
3015
3016 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3017 {
3018 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3019 int err;
3020 struct net_device *dev = info->user_ptr[1];
3021 u8 *mac_addr = NULL;
3022 struct key_parse key;
3023
3024 err = nl80211_parse_key(info, &key);
3025 if (err)
3026 return err;
3027
3028 if (info->attrs[NL80211_ATTR_MAC])
3029 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3030
3031 if (key.type == -1) {
3032 if (mac_addr)
3033 key.type = NL80211_KEYTYPE_PAIRWISE;
3034 else
3035 key.type = NL80211_KEYTYPE_GROUP;
3036 }
3037
3038 /* for now */
3039 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3040 key.type != NL80211_KEYTYPE_GROUP)
3041 return -EINVAL;
3042
3043 if (!rdev->ops->del_key)
3044 return -EOPNOTSUPP;
3045
3046 wdev_lock(dev->ieee80211_ptr);
3047 err = nl80211_key_allowed(dev->ieee80211_ptr);
3048
3049 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3050 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3051 err = -ENOENT;
3052
3053 if (!err)
3054 err = rdev_del_key(rdev, dev, key.idx,
3055 key.type == NL80211_KEYTYPE_PAIRWISE,
3056 mac_addr);
3057
3058 #ifdef CONFIG_CFG80211_WEXT
3059 if (!err) {
3060 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3061 dev->ieee80211_ptr->wext.default_key = -1;
3062 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3063 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3064 }
3065 #endif
3066 wdev_unlock(dev->ieee80211_ptr);
3067
3068 return err;
3069 }
3070
3071 /* This function returns an error or the number of nested attributes */
3072 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3073 {
3074 struct nlattr *attr;
3075 int n_entries = 0, tmp;
3076
3077 nla_for_each_nested(attr, nl_attr, tmp) {
3078 if (nla_len(attr) != ETH_ALEN)
3079 return -EINVAL;
3080
3081 n_entries++;
3082 }
3083
3084 return n_entries;
3085 }
3086
3087 /*
3088 * This function parses ACL information and allocates memory for ACL data.
3089 * On successful return, the calling function is responsible to free the
3090 * ACL buffer returned by this function.
3091 */
3092 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3093 struct genl_info *info)
3094 {
3095 enum nl80211_acl_policy acl_policy;
3096 struct nlattr *attr;
3097 struct cfg80211_acl_data *acl;
3098 int i = 0, n_entries, tmp;
3099
3100 if (!wiphy->max_acl_mac_addrs)
3101 return ERR_PTR(-EOPNOTSUPP);
3102
3103 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3104 return ERR_PTR(-EINVAL);
3105
3106 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3107 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3108 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3109 return ERR_PTR(-EINVAL);
3110
3111 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3112 return ERR_PTR(-EINVAL);
3113
3114 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3115 if (n_entries < 0)
3116 return ERR_PTR(n_entries);
3117
3118 if (n_entries > wiphy->max_acl_mac_addrs)
3119 return ERR_PTR(-ENOTSUPP);
3120
3121 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3122 GFP_KERNEL);
3123 if (!acl)
3124 return ERR_PTR(-ENOMEM);
3125
3126 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3127 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3128 i++;
3129 }
3130
3131 acl->n_acl_entries = n_entries;
3132 acl->acl_policy = acl_policy;
3133
3134 return acl;
3135 }
3136
3137 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3138 {
3139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3140 struct net_device *dev = info->user_ptr[1];
3141 struct cfg80211_acl_data *acl;
3142 int err;
3143
3144 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3145 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3146 return -EOPNOTSUPP;
3147
3148 if (!dev->ieee80211_ptr->beacon_interval)
3149 return -EINVAL;
3150
3151 acl = parse_acl_data(&rdev->wiphy, info);
3152 if (IS_ERR(acl))
3153 return PTR_ERR(acl);
3154
3155 err = rdev_set_mac_acl(rdev, dev, acl);
3156
3157 kfree(acl);
3158
3159 return err;
3160 }
3161
3162 static int nl80211_parse_beacon(struct nlattr *attrs[],
3163 struct cfg80211_beacon_data *bcn)
3164 {
3165 bool haveinfo = false;
3166
3167 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3168 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3169 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3170 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3171 return -EINVAL;
3172
3173 memset(bcn, 0, sizeof(*bcn));
3174
3175 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3176 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3177 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3178 if (!bcn->head_len)
3179 return -EINVAL;
3180 haveinfo = true;
3181 }
3182
3183 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3184 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3185 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3186 haveinfo = true;
3187 }
3188
3189 if (!haveinfo)
3190 return -EINVAL;
3191
3192 if (attrs[NL80211_ATTR_IE]) {
3193 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3194 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3195 }
3196
3197 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3198 bcn->proberesp_ies =
3199 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3200 bcn->proberesp_ies_len =
3201 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3202 }
3203
3204 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3205 bcn->assocresp_ies =
3206 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3207 bcn->assocresp_ies_len =
3208 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3209 }
3210
3211 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3212 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3213 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3214 }
3215
3216 return 0;
3217 }
3218
3219 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3220 struct cfg80211_ap_settings *params)
3221 {
3222 struct wireless_dev *wdev;
3223 bool ret = false;
3224
3225 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3226 if (wdev->iftype != NL80211_IFTYPE_AP &&
3227 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3228 continue;
3229
3230 if (!wdev->preset_chandef.chan)
3231 continue;
3232
3233 params->chandef = wdev->preset_chandef;
3234 ret = true;
3235 break;
3236 }
3237
3238 return ret;
3239 }
3240
3241 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3242 enum nl80211_auth_type auth_type,
3243 enum nl80211_commands cmd)
3244 {
3245 if (auth_type > NL80211_AUTHTYPE_MAX)
3246 return false;
3247
3248 switch (cmd) {
3249 case NL80211_CMD_AUTHENTICATE:
3250 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3251 auth_type == NL80211_AUTHTYPE_SAE)
3252 return false;
3253 return true;
3254 case NL80211_CMD_CONNECT:
3255 case NL80211_CMD_START_AP:
3256 /* SAE not supported yet */
3257 if (auth_type == NL80211_AUTHTYPE_SAE)
3258 return false;
3259 return true;
3260 default:
3261 return false;
3262 }
3263 }
3264
3265 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3266 {
3267 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3268 struct net_device *dev = info->user_ptr[1];
3269 struct wireless_dev *wdev = dev->ieee80211_ptr;
3270 struct cfg80211_ap_settings params;
3271 int err;
3272
3273 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3274 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3275 return -EOPNOTSUPP;
3276
3277 if (!rdev->ops->start_ap)
3278 return -EOPNOTSUPP;
3279
3280 if (wdev->beacon_interval)
3281 return -EALREADY;
3282
3283 memset(&params, 0, sizeof(params));
3284
3285 /* these are required for START_AP */
3286 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3287 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3288 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3289 return -EINVAL;
3290
3291 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3292 if (err)
3293 return err;
3294
3295 params.beacon_interval =
3296 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3297 params.dtim_period =
3298 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3299
3300 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3301 if (err)
3302 return err;
3303
3304 /*
3305 * In theory, some of these attributes should be required here
3306 * but since they were not used when the command was originally
3307 * added, keep them optional for old user space programs to let
3308 * them continue to work with drivers that do not need the
3309 * additional information -- drivers must check!
3310 */
3311 if (info->attrs[NL80211_ATTR_SSID]) {
3312 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3313 params.ssid_len =
3314 nla_len(info->attrs[NL80211_ATTR_SSID]);
3315 if (params.ssid_len == 0 ||
3316 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3317 return -EINVAL;
3318 }
3319
3320 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3321 params.hidden_ssid = nla_get_u32(
3322 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3323 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3324 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3325 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3326 return -EINVAL;
3327 }
3328
3329 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3330
3331 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3332 params.auth_type = nla_get_u32(
3333 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3334 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3335 NL80211_CMD_START_AP))
3336 return -EINVAL;
3337 } else
3338 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3339
3340 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3341 NL80211_MAX_NR_CIPHER_SUITES);
3342 if (err)
3343 return err;
3344
3345 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3346 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3347 return -EOPNOTSUPP;
3348 params.inactivity_timeout = nla_get_u16(
3349 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3350 }
3351
3352 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3353 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3354 return -EINVAL;
3355 params.p2p_ctwindow =
3356 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3357 if (params.p2p_ctwindow > 127)
3358 return -EINVAL;
3359 if (params.p2p_ctwindow != 0 &&
3360 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3361 return -EINVAL;
3362 }
3363
3364 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3365 u8 tmp;
3366
3367 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3368 return -EINVAL;
3369 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3370 if (tmp > 1)
3371 return -EINVAL;
3372 params.p2p_opp_ps = tmp;
3373 if (params.p2p_opp_ps != 0 &&
3374 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3375 return -EINVAL;
3376 }
3377
3378 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3379 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3380 if (err)
3381 return err;
3382 } else if (wdev->preset_chandef.chan) {
3383 params.chandef = wdev->preset_chandef;
3384 } else if (!nl80211_get_ap_channel(rdev, &params))
3385 return -EINVAL;
3386
3387 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3388 wdev->iftype))
3389 return -EINVAL;
3390
3391 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3392 params.acl = parse_acl_data(&rdev->wiphy, info);
3393 if (IS_ERR(params.acl))
3394 return PTR_ERR(params.acl);
3395 }
3396
3397 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3398 params.smps_mode =
3399 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3400 switch (params.smps_mode) {
3401 case NL80211_SMPS_OFF:
3402 break;
3403 case NL80211_SMPS_STATIC:
3404 if (!(rdev->wiphy.features &
3405 NL80211_FEATURE_STATIC_SMPS))
3406 return -EINVAL;
3407 break;
3408 case NL80211_SMPS_DYNAMIC:
3409 if (!(rdev->wiphy.features &
3410 NL80211_FEATURE_DYNAMIC_SMPS))
3411 return -EINVAL;
3412 break;
3413 default:
3414 return -EINVAL;
3415 }
3416 } else {
3417 params.smps_mode = NL80211_SMPS_OFF;
3418 }
3419
3420 wdev_lock(wdev);
3421 err = rdev_start_ap(rdev, dev, &params);
3422 if (!err) {
3423 wdev->preset_chandef = params.chandef;
3424 wdev->beacon_interval = params.beacon_interval;
3425 wdev->chandef = params.chandef;
3426 wdev->ssid_len = params.ssid_len;
3427 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3428 }
3429 wdev_unlock(wdev);
3430
3431 kfree(params.acl);
3432
3433 return err;
3434 }
3435
3436 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3437 {
3438 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3439 struct net_device *dev = info->user_ptr[1];
3440 struct wireless_dev *wdev = dev->ieee80211_ptr;
3441 struct cfg80211_beacon_data params;
3442 int err;
3443
3444 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3445 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3446 return -EOPNOTSUPP;
3447
3448 if (!rdev->ops->change_beacon)
3449 return -EOPNOTSUPP;
3450
3451 if (!wdev->beacon_interval)
3452 return -EINVAL;
3453
3454 err = nl80211_parse_beacon(info->attrs, &params);
3455 if (err)
3456 return err;
3457
3458 wdev_lock(wdev);
3459 err = rdev_change_beacon(rdev, dev, &params);
3460 wdev_unlock(wdev);
3461
3462 return err;
3463 }
3464
3465 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3466 {
3467 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3468 struct net_device *dev = info->user_ptr[1];
3469
3470 return cfg80211_stop_ap(rdev, dev, false);
3471 }
3472
3473 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3474 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3475 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3476 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3477 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3478 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3479 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3480 };
3481
3482 static int parse_station_flags(struct genl_info *info,
3483 enum nl80211_iftype iftype,
3484 struct station_parameters *params)
3485 {
3486 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3487 struct nlattr *nla;
3488 int flag;
3489
3490 /*
3491 * Try parsing the new attribute first so userspace
3492 * can specify both for older kernels.
3493 */
3494 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3495 if (nla) {
3496 struct nl80211_sta_flag_update *sta_flags;
3497
3498 sta_flags = nla_data(nla);
3499 params->sta_flags_mask = sta_flags->mask;
3500 params->sta_flags_set = sta_flags->set;
3501 params->sta_flags_set &= params->sta_flags_mask;
3502 if ((params->sta_flags_mask |
3503 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3504 return -EINVAL;
3505 return 0;
3506 }
3507
3508 /* if present, parse the old attribute */
3509
3510 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3511 if (!nla)
3512 return 0;
3513
3514 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3515 nla, sta_flags_policy))
3516 return -EINVAL;
3517
3518 /*
3519 * Only allow certain flags for interface types so that
3520 * other attributes are silently ignored. Remember that
3521 * this is backward compatibility code with old userspace
3522 * and shouldn't be hit in other cases anyway.
3523 */
3524 switch (iftype) {
3525 case NL80211_IFTYPE_AP:
3526 case NL80211_IFTYPE_AP_VLAN:
3527 case NL80211_IFTYPE_P2P_GO:
3528 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3529 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3530 BIT(NL80211_STA_FLAG_WME) |
3531 BIT(NL80211_STA_FLAG_MFP);
3532 break;
3533 case NL80211_IFTYPE_P2P_CLIENT:
3534 case NL80211_IFTYPE_STATION:
3535 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3536 BIT(NL80211_STA_FLAG_TDLS_PEER);
3537 break;
3538 case NL80211_IFTYPE_MESH_POINT:
3539 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3540 BIT(NL80211_STA_FLAG_MFP) |
3541 BIT(NL80211_STA_FLAG_AUTHORIZED);
3542 default:
3543 return -EINVAL;
3544 }
3545
3546 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3547 if (flags[flag]) {
3548 params->sta_flags_set |= (1<<flag);
3549
3550 /* no longer support new API additions in old API */
3551 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3552 return -EINVAL;
3553 }
3554 }
3555
3556 return 0;
3557 }
3558
3559 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3560 int attr)
3561 {
3562 struct nlattr *rate;
3563 u32 bitrate;
3564 u16 bitrate_compat;
3565
3566 rate = nla_nest_start(msg, attr);
3567 if (!rate)
3568 return false;
3569
3570 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3571 bitrate = cfg80211_calculate_bitrate(info);
3572 /* report 16-bit bitrate only if we can */
3573 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3574 if (bitrate > 0 &&
3575 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3576 return false;
3577 if (bitrate_compat > 0 &&
3578 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3579 return false;
3580
3581 if (info->flags & RATE_INFO_FLAGS_MCS) {
3582 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3583 return false;
3584 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3585 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3586 return false;
3587 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3588 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3589 return false;
3590 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3591 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3592 return false;
3593 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3594 return false;
3595 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3596 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3597 return false;
3598 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3599 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3600 return false;
3601 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3602 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3603 return false;
3604 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3605 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3606 return false;
3607 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3608 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3609 return false;
3610 }
3611
3612 nla_nest_end(msg, rate);
3613 return true;
3614 }
3615
3616 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3617 int id)
3618 {
3619 void *attr;
3620 int i = 0;
3621
3622 if (!mask)
3623 return true;
3624
3625 attr = nla_nest_start(msg, id);
3626 if (!attr)
3627 return false;
3628
3629 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3630 if (!(mask & BIT(i)))
3631 continue;
3632
3633 if (nla_put_u8(msg, i, signal[i]))
3634 return false;
3635 }
3636
3637 nla_nest_end(msg, attr);
3638
3639 return true;
3640 }
3641
3642 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3643 int flags,
3644 struct cfg80211_registered_device *rdev,
3645 struct net_device *dev,
3646 const u8 *mac_addr, struct station_info *sinfo)
3647 {
3648 void *hdr;
3649 struct nlattr *sinfoattr, *bss_param;
3650
3651 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3652 if (!hdr)
3653 return -1;
3654
3655 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3656 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3657 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3658 goto nla_put_failure;
3659
3660 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3661 if (!sinfoattr)
3662 goto nla_put_failure;
3663 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3664 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3665 sinfo->connected_time))
3666 goto nla_put_failure;
3667 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3668 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3669 sinfo->inactive_time))
3670 goto nla_put_failure;
3671 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3672 STATION_INFO_RX_BYTES64)) &&
3673 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3674 (u32)sinfo->rx_bytes))
3675 goto nla_put_failure;
3676 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3677 STATION_INFO_TX_BYTES64)) &&
3678 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3679 (u32)sinfo->tx_bytes))
3680 goto nla_put_failure;
3681 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3682 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3683 sinfo->rx_bytes))
3684 goto nla_put_failure;
3685 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3686 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3687 sinfo->tx_bytes))
3688 goto nla_put_failure;
3689 if ((sinfo->filled & STATION_INFO_LLID) &&
3690 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3691 goto nla_put_failure;
3692 if ((sinfo->filled & STATION_INFO_PLID) &&
3693 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3694 goto nla_put_failure;
3695 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3696 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3697 sinfo->plink_state))
3698 goto nla_put_failure;
3699 switch (rdev->wiphy.signal_type) {
3700 case CFG80211_SIGNAL_TYPE_MBM:
3701 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3702 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3703 sinfo->signal))
3704 goto nla_put_failure;
3705 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3706 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3707 sinfo->signal_avg))
3708 goto nla_put_failure;
3709 break;
3710 default:
3711 break;
3712 }
3713 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3714 if (!nl80211_put_signal(msg, sinfo->chains,
3715 sinfo->chain_signal,
3716 NL80211_STA_INFO_CHAIN_SIGNAL))
3717 goto nla_put_failure;
3718 }
3719 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3720 if (!nl80211_put_signal(msg, sinfo->chains,
3721 sinfo->chain_signal_avg,
3722 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3723 goto nla_put_failure;
3724 }
3725 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3726 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3727 NL80211_STA_INFO_TX_BITRATE))
3728 goto nla_put_failure;
3729 }
3730 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3731 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3732 NL80211_STA_INFO_RX_BITRATE))
3733 goto nla_put_failure;
3734 }
3735 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3736 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3737 sinfo->rx_packets))
3738 goto nla_put_failure;
3739 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3740 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3741 sinfo->tx_packets))
3742 goto nla_put_failure;
3743 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3744 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3745 sinfo->tx_retries))
3746 goto nla_put_failure;
3747 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3748 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3749 sinfo->tx_failed))
3750 goto nla_put_failure;
3751 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3752 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3753 sinfo->expected_throughput))
3754 goto nla_put_failure;
3755 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3756 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3757 sinfo->beacon_loss_count))
3758 goto nla_put_failure;
3759 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3760 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3761 sinfo->local_pm))
3762 goto nla_put_failure;
3763 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3764 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3765 sinfo->peer_pm))
3766 goto nla_put_failure;
3767 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3768 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3769 sinfo->nonpeer_pm))
3770 goto nla_put_failure;
3771 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3772 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3773 if (!bss_param)
3774 goto nla_put_failure;
3775
3776 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3777 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3778 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3779 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3780 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3781 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3782 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3783 sinfo->bss_param.dtim_period) ||
3784 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3785 sinfo->bss_param.beacon_interval))
3786 goto nla_put_failure;
3787
3788 nla_nest_end(msg, bss_param);
3789 }
3790 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3791 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3792 sizeof(struct nl80211_sta_flag_update),
3793 &sinfo->sta_flags))
3794 goto nla_put_failure;
3795 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3796 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3797 sinfo->t_offset))
3798 goto nla_put_failure;
3799 nla_nest_end(msg, sinfoattr);
3800
3801 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3802 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3803 sinfo->assoc_req_ies))
3804 goto nla_put_failure;
3805
3806 return genlmsg_end(msg, hdr);
3807
3808 nla_put_failure:
3809 genlmsg_cancel(msg, hdr);
3810 return -EMSGSIZE;
3811 }
3812
3813 static int nl80211_dump_station(struct sk_buff *skb,
3814 struct netlink_callback *cb)
3815 {
3816 struct station_info sinfo;
3817 struct cfg80211_registered_device *rdev;
3818 struct wireless_dev *wdev;
3819 u8 mac_addr[ETH_ALEN];
3820 int sta_idx = cb->args[2];
3821 int err;
3822
3823 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3824 if (err)
3825 return err;
3826
3827 if (!wdev->netdev) {
3828 err = -EINVAL;
3829 goto out_err;
3830 }
3831
3832 if (!rdev->ops->dump_station) {
3833 err = -EOPNOTSUPP;
3834 goto out_err;
3835 }
3836
3837 while (1) {
3838 memset(&sinfo, 0, sizeof(sinfo));
3839 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3840 mac_addr, &sinfo);
3841 if (err == -ENOENT)
3842 break;
3843 if (err)
3844 goto out_err;
3845
3846 if (nl80211_send_station(skb,
3847 NETLINK_CB(cb->skb).portid,
3848 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3849 rdev, wdev->netdev, mac_addr,
3850 &sinfo) < 0)
3851 goto out;
3852
3853 sta_idx++;
3854 }
3855
3856
3857 out:
3858 cb->args[2] = sta_idx;
3859 err = skb->len;
3860 out_err:
3861 nl80211_finish_wdev_dump(rdev);
3862
3863 return err;
3864 }
3865
3866 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3867 {
3868 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3869 struct net_device *dev = info->user_ptr[1];
3870 struct station_info sinfo;
3871 struct sk_buff *msg;
3872 u8 *mac_addr = NULL;
3873 int err;
3874
3875 memset(&sinfo, 0, sizeof(sinfo));
3876
3877 if (!info->attrs[NL80211_ATTR_MAC])
3878 return -EINVAL;
3879
3880 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3881
3882 if (!rdev->ops->get_station)
3883 return -EOPNOTSUPP;
3884
3885 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3886 if (err)
3887 return err;
3888
3889 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3890 if (!msg)
3891 return -ENOMEM;
3892
3893 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3894 rdev, dev, mac_addr, &sinfo) < 0) {
3895 nlmsg_free(msg);
3896 return -ENOBUFS;
3897 }
3898
3899 return genlmsg_reply(msg, info);
3900 }
3901
3902 int cfg80211_check_station_change(struct wiphy *wiphy,
3903 struct station_parameters *params,
3904 enum cfg80211_station_type statype)
3905 {
3906 if (params->listen_interval != -1)
3907 return -EINVAL;
3908 if (params->aid &&
3909 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3910 return -EINVAL;
3911
3912 /* When you run into this, adjust the code below for the new flag */
3913 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3914
3915 switch (statype) {
3916 case CFG80211_STA_MESH_PEER_KERNEL:
3917 case CFG80211_STA_MESH_PEER_USER:
3918 /*
3919 * No ignoring the TDLS flag here -- the userspace mesh
3920 * code doesn't have the bug of including TDLS in the
3921 * mask everywhere.
3922 */
3923 if (params->sta_flags_mask &
3924 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3925 BIT(NL80211_STA_FLAG_MFP) |
3926 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3927 return -EINVAL;
3928 break;
3929 case CFG80211_STA_TDLS_PEER_SETUP:
3930 case CFG80211_STA_TDLS_PEER_ACTIVE:
3931 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3932 return -EINVAL;
3933 /* ignore since it can't change */
3934 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3935 break;
3936 default:
3937 /* disallow mesh-specific things */
3938 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3939 return -EINVAL;
3940 if (params->local_pm)
3941 return -EINVAL;
3942 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3943 return -EINVAL;
3944 }
3945
3946 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3947 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3948 /* TDLS can't be set, ... */
3949 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3950 return -EINVAL;
3951 /*
3952 * ... but don't bother the driver with it. This works around
3953 * a hostapd/wpa_supplicant issue -- it always includes the
3954 * TLDS_PEER flag in the mask even for AP mode.
3955 */
3956 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3957 }
3958
3959 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3960 /* reject other things that can't change */
3961 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3962 return -EINVAL;
3963 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3964 return -EINVAL;
3965 if (params->supported_rates)
3966 return -EINVAL;
3967 if (params->ext_capab || params->ht_capa || params->vht_capa)
3968 return -EINVAL;
3969 }
3970
3971 if (statype != CFG80211_STA_AP_CLIENT) {
3972 if (params->vlan)
3973 return -EINVAL;
3974 }
3975
3976 switch (statype) {
3977 case CFG80211_STA_AP_MLME_CLIENT:
3978 /* Use this only for authorizing/unauthorizing a station */
3979 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3980 return -EOPNOTSUPP;
3981 break;
3982 case CFG80211_STA_AP_CLIENT:
3983 /* accept only the listed bits */
3984 if (params->sta_flags_mask &
3985 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3986 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3987 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3988 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3989 BIT(NL80211_STA_FLAG_WME) |
3990 BIT(NL80211_STA_FLAG_MFP)))
3991 return -EINVAL;
3992
3993 /* but authenticated/associated only if driver handles it */
3994 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3995 params->sta_flags_mask &
3996 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3997 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3998 return -EINVAL;
3999 break;
4000 case CFG80211_STA_IBSS:
4001 case CFG80211_STA_AP_STA:
4002 /* reject any changes other than AUTHORIZED */
4003 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4004 return -EINVAL;
4005 break;
4006 case CFG80211_STA_TDLS_PEER_SETUP:
4007 /* reject any changes other than AUTHORIZED or WME */
4008 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4009 BIT(NL80211_STA_FLAG_WME)))
4010 return -EINVAL;
4011 /* force (at least) rates when authorizing */
4012 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4013 !params->supported_rates)
4014 return -EINVAL;
4015 break;
4016 case CFG80211_STA_TDLS_PEER_ACTIVE:
4017 /* reject any changes */
4018 return -EINVAL;
4019 case CFG80211_STA_MESH_PEER_KERNEL:
4020 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4021 return -EINVAL;
4022 break;
4023 case CFG80211_STA_MESH_PEER_USER:
4024 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4025 return -EINVAL;
4026 break;
4027 }
4028
4029 return 0;
4030 }
4031 EXPORT_SYMBOL(cfg80211_check_station_change);
4032
4033 /*
4034 * Get vlan interface making sure it is running and on the right wiphy.
4035 */
4036 static struct net_device *get_vlan(struct genl_info *info,
4037 struct cfg80211_registered_device *rdev)
4038 {
4039 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4040 struct net_device *v;
4041 int ret;
4042
4043 if (!vlanattr)
4044 return NULL;
4045
4046 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4047 if (!v)
4048 return ERR_PTR(-ENODEV);
4049
4050 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4051 ret = -EINVAL;
4052 goto error;
4053 }
4054
4055 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4056 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4057 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4058 ret = -EINVAL;
4059 goto error;
4060 }
4061
4062 if (!netif_running(v)) {
4063 ret = -ENETDOWN;
4064 goto error;
4065 }
4066
4067 return v;
4068 error:
4069 dev_put(v);
4070 return ERR_PTR(ret);
4071 }
4072
4073 static const struct nla_policy
4074 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4075 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4076 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4077 };
4078
4079 static int nl80211_parse_sta_wme(struct genl_info *info,
4080 struct station_parameters *params)
4081 {
4082 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4083 struct nlattr *nla;
4084 int err;
4085
4086 /* parse WME attributes if present */
4087 if (!info->attrs[NL80211_ATTR_STA_WME])
4088 return 0;
4089
4090 nla = info->attrs[NL80211_ATTR_STA_WME];
4091 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4092 nl80211_sta_wme_policy);
4093 if (err)
4094 return err;
4095
4096 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4097 params->uapsd_queues = nla_get_u8(
4098 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4099 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4100 return -EINVAL;
4101
4102 if (tb[NL80211_STA_WME_MAX_SP])
4103 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4104
4105 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4106 return -EINVAL;
4107
4108 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4109
4110 return 0;
4111 }
4112
4113 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4114 struct station_parameters *params)
4115 {
4116 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4117 params->supported_channels =
4118 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4119 params->supported_channels_len =
4120 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4121 /*
4122 * Need to include at least one (first channel, number of
4123 * channels) tuple for each subband, and must have proper
4124 * tuples for the rest of the data as well.
4125 */
4126 if (params->supported_channels_len < 2)
4127 return -EINVAL;
4128 if (params->supported_channels_len % 2)
4129 return -EINVAL;
4130 }
4131
4132 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4133 params->supported_oper_classes =
4134 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4135 params->supported_oper_classes_len =
4136 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4137 /*
4138 * The value of the Length field of the Supported Operating
4139 * Classes element is between 2 and 253.
4140 */
4141 if (params->supported_oper_classes_len < 2 ||
4142 params->supported_oper_classes_len > 253)
4143 return -EINVAL;
4144 }
4145 return 0;
4146 }
4147
4148 static int nl80211_set_station_tdls(struct genl_info *info,
4149 struct station_parameters *params)
4150 {
4151 int err;
4152 /* Dummy STA entry gets updated once the peer capabilities are known */
4153 if (info->attrs[NL80211_ATTR_PEER_AID])
4154 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4155 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4156 params->ht_capa =
4157 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4158 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4159 params->vht_capa =
4160 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4161
4162 err = nl80211_parse_sta_channel_info(info, params);
4163 if (err)
4164 return err;
4165
4166 return nl80211_parse_sta_wme(info, params);
4167 }
4168
4169 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4170 {
4171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4172 struct net_device *dev = info->user_ptr[1];
4173 struct station_parameters params;
4174 u8 *mac_addr;
4175 int err;
4176
4177 memset(&params, 0, sizeof(params));
4178
4179 params.listen_interval = -1;
4180
4181 if (!rdev->ops->change_station)
4182 return -EOPNOTSUPP;
4183
4184 if (info->attrs[NL80211_ATTR_STA_AID])
4185 return -EINVAL;
4186
4187 if (!info->attrs[NL80211_ATTR_MAC])
4188 return -EINVAL;
4189
4190 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4191
4192 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4193 params.supported_rates =
4194 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4195 params.supported_rates_len =
4196 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4197 }
4198
4199 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4200 params.capability =
4201 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4202 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4203 }
4204
4205 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4206 params.ext_capab =
4207 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4208 params.ext_capab_len =
4209 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4210 }
4211
4212 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4213 return -EINVAL;
4214
4215 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4216 return -EINVAL;
4217
4218 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4219 params.plink_action =
4220 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4221 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4222 return -EINVAL;
4223 }
4224
4225 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4226 params.plink_state =
4227 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4228 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4229 return -EINVAL;
4230 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4231 }
4232
4233 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4234 enum nl80211_mesh_power_mode pm = nla_get_u32(
4235 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4236
4237 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4238 pm > NL80211_MESH_POWER_MAX)
4239 return -EINVAL;
4240
4241 params.local_pm = pm;
4242 }
4243
4244 /* Include parameters for TDLS peer (will check later) */
4245 err = nl80211_set_station_tdls(info, &params);
4246 if (err)
4247 return err;
4248
4249 params.vlan = get_vlan(info, rdev);
4250 if (IS_ERR(params.vlan))
4251 return PTR_ERR(params.vlan);
4252
4253 switch (dev->ieee80211_ptr->iftype) {
4254 case NL80211_IFTYPE_AP:
4255 case NL80211_IFTYPE_AP_VLAN:
4256 case NL80211_IFTYPE_P2P_GO:
4257 case NL80211_IFTYPE_P2P_CLIENT:
4258 case NL80211_IFTYPE_STATION:
4259 case NL80211_IFTYPE_ADHOC:
4260 case NL80211_IFTYPE_MESH_POINT:
4261 break;
4262 default:
4263 err = -EOPNOTSUPP;
4264 goto out_put_vlan;
4265 }
4266
4267 /* driver will call cfg80211_check_station_change() */
4268 err = rdev_change_station(rdev, dev, mac_addr, &params);
4269
4270 out_put_vlan:
4271 if (params.vlan)
4272 dev_put(params.vlan);
4273
4274 return err;
4275 }
4276
4277 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4278 {
4279 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4280 int err;
4281 struct net_device *dev = info->user_ptr[1];
4282 struct station_parameters params;
4283 u8 *mac_addr = NULL;
4284
4285 memset(&params, 0, sizeof(params));
4286
4287 if (!rdev->ops->add_station)
4288 return -EOPNOTSUPP;
4289
4290 if (!info->attrs[NL80211_ATTR_MAC])
4291 return -EINVAL;
4292
4293 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4294 return -EINVAL;
4295
4296 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4297 return -EINVAL;
4298
4299 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4300 !info->attrs[NL80211_ATTR_PEER_AID])
4301 return -EINVAL;
4302
4303 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4304 params.supported_rates =
4305 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4306 params.supported_rates_len =
4307 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4308 params.listen_interval =
4309 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4310
4311 if (info->attrs[NL80211_ATTR_PEER_AID])
4312 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4313 else
4314 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4315 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4316 return -EINVAL;
4317
4318 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4319 params.capability =
4320 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4321 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4322 }
4323
4324 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4325 params.ext_capab =
4326 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4327 params.ext_capab_len =
4328 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4329 }
4330
4331 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4332 params.ht_capa =
4333 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4334
4335 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4336 params.vht_capa =
4337 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4338
4339 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4340 params.opmode_notif_used = true;
4341 params.opmode_notif =
4342 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4343 }
4344
4345 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4346 params.plink_action =
4347 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4348 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4349 return -EINVAL;
4350 }
4351
4352 err = nl80211_parse_sta_channel_info(info, &params);
4353 if (err)
4354 return err;
4355
4356 err = nl80211_parse_sta_wme(info, &params);
4357 if (err)
4358 return err;
4359
4360 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4361 return -EINVAL;
4362
4363 /* When you run into this, adjust the code below for the new flag */
4364 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4365
4366 switch (dev->ieee80211_ptr->iftype) {
4367 case NL80211_IFTYPE_AP:
4368 case NL80211_IFTYPE_AP_VLAN:
4369 case NL80211_IFTYPE_P2P_GO:
4370 /* ignore WME attributes if iface/sta is not capable */
4371 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4372 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4373 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4374
4375 /* TDLS peers cannot be added */
4376 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4377 info->attrs[NL80211_ATTR_PEER_AID])
4378 return -EINVAL;
4379 /* but don't bother the driver with it */
4380 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4381
4382 /* allow authenticated/associated only if driver handles it */
4383 if (!(rdev->wiphy.features &
4384 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4385 params.sta_flags_mask &
4386 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4387 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4388 return -EINVAL;
4389
4390 /* must be last in here for error handling */
4391 params.vlan = get_vlan(info, rdev);
4392 if (IS_ERR(params.vlan))
4393 return PTR_ERR(params.vlan);
4394 break;
4395 case NL80211_IFTYPE_MESH_POINT:
4396 /* ignore uAPSD data */
4397 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4398
4399 /* associated is disallowed */
4400 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4401 return -EINVAL;
4402 /* TDLS peers cannot be added */
4403 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4404 info->attrs[NL80211_ATTR_PEER_AID])
4405 return -EINVAL;
4406 break;
4407 case NL80211_IFTYPE_STATION:
4408 case NL80211_IFTYPE_P2P_CLIENT:
4409 /* ignore uAPSD data */
4410 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4411
4412 /* these are disallowed */
4413 if (params.sta_flags_mask &
4414 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4415 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4416 return -EINVAL;
4417 /* Only TDLS peers can be added */
4418 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4419 return -EINVAL;
4420 /* Can only add if TDLS ... */
4421 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4422 return -EOPNOTSUPP;
4423 /* ... with external setup is supported */
4424 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4425 return -EOPNOTSUPP;
4426 /*
4427 * Older wpa_supplicant versions always mark the TDLS peer
4428 * as authorized, but it shouldn't yet be.
4429 */
4430 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4431 break;
4432 default:
4433 return -EOPNOTSUPP;
4434 }
4435
4436 /* be aware of params.vlan when changing code here */
4437
4438 err = rdev_add_station(rdev, dev, mac_addr, &params);
4439
4440 if (params.vlan)
4441 dev_put(params.vlan);
4442 return err;
4443 }
4444
4445 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4446 {
4447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4448 struct net_device *dev = info->user_ptr[1];
4449 struct station_del_parameters params;
4450
4451 memset(&params, 0, sizeof(params));
4452
4453 if (info->attrs[NL80211_ATTR_MAC])
4454 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4455
4456 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4457 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4458 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4459 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4460 return -EINVAL;
4461
4462 if (!rdev->ops->del_station)
4463 return -EOPNOTSUPP;
4464
4465 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4466 params.subtype =
4467 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4468 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4469 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4470 return -EINVAL;
4471 } else {
4472 /* Default to Deauthentication frame */
4473 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4474 }
4475
4476 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4477 params.reason_code =
4478 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4479 if (params.reason_code == 0)
4480 return -EINVAL; /* 0 is reserved */
4481 } else {
4482 /* Default to reason code 2 */
4483 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4484 }
4485
4486 return rdev_del_station(rdev, dev, &params);
4487 }
4488
4489 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4490 int flags, struct net_device *dev,
4491 u8 *dst, u8 *next_hop,
4492 struct mpath_info *pinfo)
4493 {
4494 void *hdr;
4495 struct nlattr *pinfoattr;
4496
4497 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4498 if (!hdr)
4499 return -1;
4500
4501 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4502 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4503 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4504 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4505 goto nla_put_failure;
4506
4507 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4508 if (!pinfoattr)
4509 goto nla_put_failure;
4510 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4511 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4512 pinfo->frame_qlen))
4513 goto nla_put_failure;
4514 if (((pinfo->filled & MPATH_INFO_SN) &&
4515 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4516 ((pinfo->filled & MPATH_INFO_METRIC) &&
4517 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4518 pinfo->metric)) ||
4519 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4520 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4521 pinfo->exptime)) ||
4522 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4523 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4524 pinfo->flags)) ||
4525 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4526 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4527 pinfo->discovery_timeout)) ||
4528 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4529 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4530 pinfo->discovery_retries)))
4531 goto nla_put_failure;
4532
4533 nla_nest_end(msg, pinfoattr);
4534
4535 return genlmsg_end(msg, hdr);
4536
4537 nla_put_failure:
4538 genlmsg_cancel(msg, hdr);
4539 return -EMSGSIZE;
4540 }
4541
4542 static int nl80211_dump_mpath(struct sk_buff *skb,
4543 struct netlink_callback *cb)
4544 {
4545 struct mpath_info pinfo;
4546 struct cfg80211_registered_device *rdev;
4547 struct wireless_dev *wdev;
4548 u8 dst[ETH_ALEN];
4549 u8 next_hop[ETH_ALEN];
4550 int path_idx = cb->args[2];
4551 int err;
4552
4553 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4554 if (err)
4555 return err;
4556
4557 if (!rdev->ops->dump_mpath) {
4558 err = -EOPNOTSUPP;
4559 goto out_err;
4560 }
4561
4562 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4563 err = -EOPNOTSUPP;
4564 goto out_err;
4565 }
4566
4567 while (1) {
4568 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4569 next_hop, &pinfo);
4570 if (err == -ENOENT)
4571 break;
4572 if (err)
4573 goto out_err;
4574
4575 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4576 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4577 wdev->netdev, dst, next_hop,
4578 &pinfo) < 0)
4579 goto out;
4580
4581 path_idx++;
4582 }
4583
4584
4585 out:
4586 cb->args[2] = path_idx;
4587 err = skb->len;
4588 out_err:
4589 nl80211_finish_wdev_dump(rdev);
4590 return err;
4591 }
4592
4593 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4594 {
4595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4596 int err;
4597 struct net_device *dev = info->user_ptr[1];
4598 struct mpath_info pinfo;
4599 struct sk_buff *msg;
4600 u8 *dst = NULL;
4601 u8 next_hop[ETH_ALEN];
4602
4603 memset(&pinfo, 0, sizeof(pinfo));
4604
4605 if (!info->attrs[NL80211_ATTR_MAC])
4606 return -EINVAL;
4607
4608 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4609
4610 if (!rdev->ops->get_mpath)
4611 return -EOPNOTSUPP;
4612
4613 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4614 return -EOPNOTSUPP;
4615
4616 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4617 if (err)
4618 return err;
4619
4620 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4621 if (!msg)
4622 return -ENOMEM;
4623
4624 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4625 dev, dst, next_hop, &pinfo) < 0) {
4626 nlmsg_free(msg);
4627 return -ENOBUFS;
4628 }
4629
4630 return genlmsg_reply(msg, info);
4631 }
4632
4633 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4634 {
4635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636 struct net_device *dev = info->user_ptr[1];
4637 u8 *dst = NULL;
4638 u8 *next_hop = NULL;
4639
4640 if (!info->attrs[NL80211_ATTR_MAC])
4641 return -EINVAL;
4642
4643 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4644 return -EINVAL;
4645
4646 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4647 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4648
4649 if (!rdev->ops->change_mpath)
4650 return -EOPNOTSUPP;
4651
4652 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4653 return -EOPNOTSUPP;
4654
4655 return rdev_change_mpath(rdev, dev, dst, next_hop);
4656 }
4657
4658 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4659 {
4660 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4661 struct net_device *dev = info->user_ptr[1];
4662 u8 *dst = NULL;
4663 u8 *next_hop = NULL;
4664
4665 if (!info->attrs[NL80211_ATTR_MAC])
4666 return -EINVAL;
4667
4668 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4669 return -EINVAL;
4670
4671 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4672 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4673
4674 if (!rdev->ops->add_mpath)
4675 return -EOPNOTSUPP;
4676
4677 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4678 return -EOPNOTSUPP;
4679
4680 return rdev_add_mpath(rdev, dev, dst, next_hop);
4681 }
4682
4683 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4684 {
4685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4686 struct net_device *dev = info->user_ptr[1];
4687 u8 *dst = NULL;
4688
4689 if (info->attrs[NL80211_ATTR_MAC])
4690 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4691
4692 if (!rdev->ops->del_mpath)
4693 return -EOPNOTSUPP;
4694
4695 return rdev_del_mpath(rdev, dev, dst);
4696 }
4697
4698 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4699 {
4700 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4701 int err;
4702 struct net_device *dev = info->user_ptr[1];
4703 struct mpath_info pinfo;
4704 struct sk_buff *msg;
4705 u8 *dst = NULL;
4706 u8 mpp[ETH_ALEN];
4707
4708 memset(&pinfo, 0, sizeof(pinfo));
4709
4710 if (!info->attrs[NL80211_ATTR_MAC])
4711 return -EINVAL;
4712
4713 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4714
4715 if (!rdev->ops->get_mpp)
4716 return -EOPNOTSUPP;
4717
4718 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4719 return -EOPNOTSUPP;
4720
4721 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4722 if (err)
4723 return err;
4724
4725 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4726 if (!msg)
4727 return -ENOMEM;
4728
4729 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4730 dev, dst, mpp, &pinfo) < 0) {
4731 nlmsg_free(msg);
4732 return -ENOBUFS;
4733 }
4734
4735 return genlmsg_reply(msg, info);
4736 }
4737
4738 static int nl80211_dump_mpp(struct sk_buff *skb,
4739 struct netlink_callback *cb)
4740 {
4741 struct mpath_info pinfo;
4742 struct cfg80211_registered_device *rdev;
4743 struct wireless_dev *wdev;
4744 u8 dst[ETH_ALEN];
4745 u8 mpp[ETH_ALEN];
4746 int path_idx = cb->args[2];
4747 int err;
4748
4749 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4750 if (err)
4751 return err;
4752
4753 if (!rdev->ops->dump_mpp) {
4754 err = -EOPNOTSUPP;
4755 goto out_err;
4756 }
4757
4758 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4759 err = -EOPNOTSUPP;
4760 goto out_err;
4761 }
4762
4763 while (1) {
4764 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4765 mpp, &pinfo);
4766 if (err == -ENOENT)
4767 break;
4768 if (err)
4769 goto out_err;
4770
4771 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4772 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4773 wdev->netdev, dst, mpp,
4774 &pinfo) < 0)
4775 goto out;
4776
4777 path_idx++;
4778 }
4779
4780 out:
4781 cb->args[2] = path_idx;
4782 err = skb->len;
4783 out_err:
4784 nl80211_finish_wdev_dump(rdev);
4785 return err;
4786 }
4787
4788 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4789 {
4790 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4791 struct net_device *dev = info->user_ptr[1];
4792 struct wireless_dev *wdev = dev->ieee80211_ptr;
4793 struct bss_parameters params;
4794 int err;
4795
4796 memset(&params, 0, sizeof(params));
4797 /* default to not changing parameters */
4798 params.use_cts_prot = -1;
4799 params.use_short_preamble = -1;
4800 params.use_short_slot_time = -1;
4801 params.ap_isolate = -1;
4802 params.ht_opmode = -1;
4803 params.p2p_ctwindow = -1;
4804 params.p2p_opp_ps = -1;
4805
4806 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4807 params.use_cts_prot =
4808 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4809 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4810 params.use_short_preamble =
4811 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4812 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4813 params.use_short_slot_time =
4814 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4815 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4816 params.basic_rates =
4817 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4818 params.basic_rates_len =
4819 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4820 }
4821 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4822 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4823 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4824 params.ht_opmode =
4825 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4826
4827 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4828 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4829 return -EINVAL;
4830 params.p2p_ctwindow =
4831 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4832 if (params.p2p_ctwindow < 0)
4833 return -EINVAL;
4834 if (params.p2p_ctwindow != 0 &&
4835 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4836 return -EINVAL;
4837 }
4838
4839 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4840 u8 tmp;
4841
4842 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4843 return -EINVAL;
4844 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4845 if (tmp > 1)
4846 return -EINVAL;
4847 params.p2p_opp_ps = tmp;
4848 if (params.p2p_opp_ps &&
4849 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4850 return -EINVAL;
4851 }
4852
4853 if (!rdev->ops->change_bss)
4854 return -EOPNOTSUPP;
4855
4856 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4857 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4858 return -EOPNOTSUPP;
4859
4860 wdev_lock(wdev);
4861 err = rdev_change_bss(rdev, dev, &params);
4862 wdev_unlock(wdev);
4863
4864 return err;
4865 }
4866
4867 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4868 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4869 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4870 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4871 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4872 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4873 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4874 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4875 };
4876
4877 static int parse_reg_rule(struct nlattr *tb[],
4878 struct ieee80211_reg_rule *reg_rule)
4879 {
4880 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4881 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4882
4883 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4884 return -EINVAL;
4885 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4886 return -EINVAL;
4887 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4888 return -EINVAL;
4889 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4890 return -EINVAL;
4891 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4892 return -EINVAL;
4893
4894 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4895
4896 freq_range->start_freq_khz =
4897 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4898 freq_range->end_freq_khz =
4899 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4900 freq_range->max_bandwidth_khz =
4901 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4902
4903 power_rule->max_eirp =
4904 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4905
4906 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4907 power_rule->max_antenna_gain =
4908 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4909
4910 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4911 reg_rule->dfs_cac_ms =
4912 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4913
4914 return 0;
4915 }
4916
4917 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4918 {
4919 char *data = NULL;
4920 enum nl80211_user_reg_hint_type user_reg_hint_type;
4921
4922 /*
4923 * You should only get this when cfg80211 hasn't yet initialized
4924 * completely when built-in to the kernel right between the time
4925 * window between nl80211_init() and regulatory_init(), if that is
4926 * even possible.
4927 */
4928 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4929 return -EINPROGRESS;
4930
4931 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4932 user_reg_hint_type =
4933 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4934 else
4935 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4936
4937 switch (user_reg_hint_type) {
4938 case NL80211_USER_REG_HINT_USER:
4939 case NL80211_USER_REG_HINT_CELL_BASE:
4940 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4941 return -EINVAL;
4942
4943 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4944 return regulatory_hint_user(data, user_reg_hint_type);
4945 case NL80211_USER_REG_HINT_INDOOR:
4946 return regulatory_hint_indoor_user();
4947 default:
4948 return -EINVAL;
4949 }
4950 }
4951
4952 static int nl80211_get_mesh_config(struct sk_buff *skb,
4953 struct genl_info *info)
4954 {
4955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4956 struct net_device *dev = info->user_ptr[1];
4957 struct wireless_dev *wdev = dev->ieee80211_ptr;
4958 struct mesh_config cur_params;
4959 int err = 0;
4960 void *hdr;
4961 struct nlattr *pinfoattr;
4962 struct sk_buff *msg;
4963
4964 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4965 return -EOPNOTSUPP;
4966
4967 if (!rdev->ops->get_mesh_config)
4968 return -EOPNOTSUPP;
4969
4970 wdev_lock(wdev);
4971 /* If not connected, get default parameters */
4972 if (!wdev->mesh_id_len)
4973 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4974 else
4975 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4976 wdev_unlock(wdev);
4977
4978 if (err)
4979 return err;
4980
4981 /* Draw up a netlink message to send back */
4982 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4983 if (!msg)
4984 return -ENOMEM;
4985 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4986 NL80211_CMD_GET_MESH_CONFIG);
4987 if (!hdr)
4988 goto out;
4989 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4990 if (!pinfoattr)
4991 goto nla_put_failure;
4992 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4993 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4994 cur_params.dot11MeshRetryTimeout) ||
4995 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4996 cur_params.dot11MeshConfirmTimeout) ||
4997 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4998 cur_params.dot11MeshHoldingTimeout) ||
4999 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5000 cur_params.dot11MeshMaxPeerLinks) ||
5001 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5002 cur_params.dot11MeshMaxRetries) ||
5003 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5004 cur_params.dot11MeshTTL) ||
5005 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5006 cur_params.element_ttl) ||
5007 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5008 cur_params.auto_open_plinks) ||
5009 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5010 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5011 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5012 cur_params.dot11MeshHWMPmaxPREQretries) ||
5013 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5014 cur_params.path_refresh_time) ||
5015 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5016 cur_params.min_discovery_timeout) ||
5017 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5018 cur_params.dot11MeshHWMPactivePathTimeout) ||
5019 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5020 cur_params.dot11MeshHWMPpreqMinInterval) ||
5021 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5022 cur_params.dot11MeshHWMPperrMinInterval) ||
5023 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5024 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5025 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5026 cur_params.dot11MeshHWMPRootMode) ||
5027 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5028 cur_params.dot11MeshHWMPRannInterval) ||
5029 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5030 cur_params.dot11MeshGateAnnouncementProtocol) ||
5031 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5032 cur_params.dot11MeshForwarding) ||
5033 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5034 cur_params.rssi_threshold) ||
5035 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5036 cur_params.ht_opmode) ||
5037 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5038 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5039 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5040 cur_params.dot11MeshHWMProotInterval) ||
5041 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5042 cur_params.dot11MeshHWMPconfirmationInterval) ||
5043 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5044 cur_params.power_mode) ||
5045 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5046 cur_params.dot11MeshAwakeWindowDuration) ||
5047 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5048 cur_params.plink_timeout))
5049 goto nla_put_failure;
5050 nla_nest_end(msg, pinfoattr);
5051 genlmsg_end(msg, hdr);
5052 return genlmsg_reply(msg, info);
5053
5054 nla_put_failure:
5055 genlmsg_cancel(msg, hdr);
5056 out:
5057 nlmsg_free(msg);
5058 return -ENOBUFS;
5059 }
5060
5061 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5062 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5063 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5064 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5065 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5066 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5067 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5068 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5069 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5070 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5071 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5072 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5073 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5074 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5075 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5076 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5077 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5078 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5079 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5080 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5081 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5082 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5083 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5084 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5085 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5086 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5087 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5088 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5089 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5090 };
5091
5092 static const struct nla_policy
5093 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5094 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5095 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5096 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5097 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5098 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5099 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5100 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5101 .len = IEEE80211_MAX_DATA_LEN },
5102 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5103 };
5104
5105 static int nl80211_parse_mesh_config(struct genl_info *info,
5106 struct mesh_config *cfg,
5107 u32 *mask_out)
5108 {
5109 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5110 u32 mask = 0;
5111
5112 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5113 do { \
5114 if (tb[attr]) { \
5115 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5116 return -EINVAL; \
5117 cfg->param = fn(tb[attr]); \
5118 mask |= (1 << (attr - 1)); \
5119 } \
5120 } while (0)
5121
5122
5123 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5124 return -EINVAL;
5125 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5126 info->attrs[NL80211_ATTR_MESH_CONFIG],
5127 nl80211_meshconf_params_policy))
5128 return -EINVAL;
5129
5130 /* This makes sure that there aren't more than 32 mesh config
5131 * parameters (otherwise our bitfield scheme would not work.) */
5132 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5133
5134 /* Fill in the params struct */
5135 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5136 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5137 nla_get_u16);
5138 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5139 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5140 nla_get_u16);
5141 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5142 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5143 nla_get_u16);
5144 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5145 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5146 nla_get_u16);
5147 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5148 mask, NL80211_MESHCONF_MAX_RETRIES,
5149 nla_get_u8);
5150 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5151 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5152 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5153 mask, NL80211_MESHCONF_ELEMENT_TTL,
5154 nla_get_u8);
5155 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5156 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5157 nla_get_u8);
5158 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5159 1, 255, mask,
5160 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5161 nla_get_u32);
5162 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5163 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5164 nla_get_u8);
5165 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5166 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5167 nla_get_u32);
5168 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5169 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5170 nla_get_u16);
5171 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5172 1, 65535, mask,
5173 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5174 nla_get_u32);
5175 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5176 1, 65535, mask,
5177 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5178 nla_get_u16);
5179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5180 1, 65535, mask,
5181 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5182 nla_get_u16);
5183 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5184 dot11MeshHWMPnetDiameterTraversalTime,
5185 1, 65535, mask,
5186 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5187 nla_get_u16);
5188 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5189 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5190 nla_get_u8);
5191 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5192 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5193 nla_get_u16);
5194 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5195 dot11MeshGateAnnouncementProtocol, 0, 1,
5196 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5197 nla_get_u8);
5198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5199 mask, NL80211_MESHCONF_FORWARDING,
5200 nla_get_u8);
5201 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5202 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5203 nla_get_s32);
5204 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5205 mask, NL80211_MESHCONF_HT_OPMODE,
5206 nla_get_u16);
5207 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5208 1, 65535, mask,
5209 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5210 nla_get_u32);
5211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5212 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5213 nla_get_u16);
5214 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5215 dot11MeshHWMPconfirmationInterval,
5216 1, 65535, mask,
5217 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5218 nla_get_u16);
5219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5220 NL80211_MESH_POWER_ACTIVE,
5221 NL80211_MESH_POWER_MAX,
5222 mask, NL80211_MESHCONF_POWER_MODE,
5223 nla_get_u32);
5224 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5225 0, 65535, mask,
5226 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5227 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5228 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5229 nla_get_u32);
5230 if (mask_out)
5231 *mask_out = mask;
5232
5233 return 0;
5234
5235 #undef FILL_IN_MESH_PARAM_IF_SET
5236 }
5237
5238 static int nl80211_parse_mesh_setup(struct genl_info *info,
5239 struct mesh_setup *setup)
5240 {
5241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5242 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5243
5244 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5245 return -EINVAL;
5246 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5247 info->attrs[NL80211_ATTR_MESH_SETUP],
5248 nl80211_mesh_setup_params_policy))
5249 return -EINVAL;
5250
5251 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5252 setup->sync_method =
5253 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5254 IEEE80211_SYNC_METHOD_VENDOR :
5255 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5256
5257 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5258 setup->path_sel_proto =
5259 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5260 IEEE80211_PATH_PROTOCOL_VENDOR :
5261 IEEE80211_PATH_PROTOCOL_HWMP;
5262
5263 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5264 setup->path_metric =
5265 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5266 IEEE80211_PATH_METRIC_VENDOR :
5267 IEEE80211_PATH_METRIC_AIRTIME;
5268
5269
5270 if (tb[NL80211_MESH_SETUP_IE]) {
5271 struct nlattr *ieattr =
5272 tb[NL80211_MESH_SETUP_IE];
5273 if (!is_valid_ie_attr(ieattr))
5274 return -EINVAL;
5275 setup->ie = nla_data(ieattr);
5276 setup->ie_len = nla_len(ieattr);
5277 }
5278 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5279 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5280 return -EINVAL;
5281 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5282 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5283 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5284 if (setup->is_secure)
5285 setup->user_mpm = true;
5286
5287 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5288 if (!setup->user_mpm)
5289 return -EINVAL;
5290 setup->auth_id =
5291 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5292 }
5293
5294 return 0;
5295 }
5296
5297 static int nl80211_update_mesh_config(struct sk_buff *skb,
5298 struct genl_info *info)
5299 {
5300 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5301 struct net_device *dev = info->user_ptr[1];
5302 struct wireless_dev *wdev = dev->ieee80211_ptr;
5303 struct mesh_config cfg;
5304 u32 mask;
5305 int err;
5306
5307 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5308 return -EOPNOTSUPP;
5309
5310 if (!rdev->ops->update_mesh_config)
5311 return -EOPNOTSUPP;
5312
5313 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5314 if (err)
5315 return err;
5316
5317 wdev_lock(wdev);
5318 if (!wdev->mesh_id_len)
5319 err = -ENOLINK;
5320
5321 if (!err)
5322 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5323
5324 wdev_unlock(wdev);
5325
5326 return err;
5327 }
5328
5329 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5330 {
5331 const struct ieee80211_regdomain *regdom;
5332 struct sk_buff *msg;
5333 void *hdr = NULL;
5334 struct nlattr *nl_reg_rules;
5335 unsigned int i;
5336
5337 if (!cfg80211_regdomain)
5338 return -EINVAL;
5339
5340 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5341 if (!msg)
5342 return -ENOBUFS;
5343
5344 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5345 NL80211_CMD_GET_REG);
5346 if (!hdr)
5347 goto put_failure;
5348
5349 if (reg_last_request_cell_base() &&
5350 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5351 NL80211_USER_REG_HINT_CELL_BASE))
5352 goto nla_put_failure;
5353
5354 rcu_read_lock();
5355 regdom = rcu_dereference(cfg80211_regdomain);
5356
5357 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5358 (regdom->dfs_region &&
5359 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5360 goto nla_put_failure_rcu;
5361
5362 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5363 if (!nl_reg_rules)
5364 goto nla_put_failure_rcu;
5365
5366 for (i = 0; i < regdom->n_reg_rules; i++) {
5367 struct nlattr *nl_reg_rule;
5368 const struct ieee80211_reg_rule *reg_rule;
5369 const struct ieee80211_freq_range *freq_range;
5370 const struct ieee80211_power_rule *power_rule;
5371 unsigned int max_bandwidth_khz;
5372
5373 reg_rule = &regdom->reg_rules[i];
5374 freq_range = &reg_rule->freq_range;
5375 power_rule = &reg_rule->power_rule;
5376
5377 nl_reg_rule = nla_nest_start(msg, i);
5378 if (!nl_reg_rule)
5379 goto nla_put_failure_rcu;
5380
5381 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5382 if (!max_bandwidth_khz)
5383 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5384 reg_rule);
5385
5386 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5387 reg_rule->flags) ||
5388 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5389 freq_range->start_freq_khz) ||
5390 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5391 freq_range->end_freq_khz) ||
5392 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5393 max_bandwidth_khz) ||
5394 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5395 power_rule->max_antenna_gain) ||
5396 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5397 power_rule->max_eirp) ||
5398 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5399 reg_rule->dfs_cac_ms))
5400 goto nla_put_failure_rcu;
5401
5402 nla_nest_end(msg, nl_reg_rule);
5403 }
5404 rcu_read_unlock();
5405
5406 nla_nest_end(msg, nl_reg_rules);
5407
5408 genlmsg_end(msg, hdr);
5409 return genlmsg_reply(msg, info);
5410
5411 nla_put_failure_rcu:
5412 rcu_read_unlock();
5413 nla_put_failure:
5414 genlmsg_cancel(msg, hdr);
5415 put_failure:
5416 nlmsg_free(msg);
5417 return -EMSGSIZE;
5418 }
5419
5420 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5421 {
5422 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5423 struct nlattr *nl_reg_rule;
5424 char *alpha2;
5425 int rem_reg_rules, r;
5426 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5427 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5428 struct ieee80211_regdomain *rd;
5429
5430 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5431 return -EINVAL;
5432
5433 if (!info->attrs[NL80211_ATTR_REG_RULES])
5434 return -EINVAL;
5435
5436 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5437
5438 if (info->attrs[NL80211_ATTR_DFS_REGION])
5439 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5440
5441 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5442 rem_reg_rules) {
5443 num_rules++;
5444 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5445 return -EINVAL;
5446 }
5447
5448 if (!reg_is_valid_request(alpha2))
5449 return -EINVAL;
5450
5451 size_of_regd = sizeof(struct ieee80211_regdomain) +
5452 num_rules * sizeof(struct ieee80211_reg_rule);
5453
5454 rd = kzalloc(size_of_regd, GFP_KERNEL);
5455 if (!rd)
5456 return -ENOMEM;
5457
5458 rd->n_reg_rules = num_rules;
5459 rd->alpha2[0] = alpha2[0];
5460 rd->alpha2[1] = alpha2[1];
5461
5462 /*
5463 * Disable DFS master mode if the DFS region was
5464 * not supported or known on this kernel.
5465 */
5466 if (reg_supported_dfs_region(dfs_region))
5467 rd->dfs_region = dfs_region;
5468
5469 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5470 rem_reg_rules) {
5471 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5472 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5473 reg_rule_policy);
5474 if (r)
5475 goto bad_reg;
5476 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5477 if (r)
5478 goto bad_reg;
5479
5480 rule_idx++;
5481
5482 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5483 r = -EINVAL;
5484 goto bad_reg;
5485 }
5486 }
5487
5488 r = set_regdom(rd);
5489 /* set_regdom took ownership */
5490 rd = NULL;
5491
5492 bad_reg:
5493 kfree(rd);
5494 return r;
5495 }
5496
5497 static int validate_scan_freqs(struct nlattr *freqs)
5498 {
5499 struct nlattr *attr1, *attr2;
5500 int n_channels = 0, tmp1, tmp2;
5501
5502 nla_for_each_nested(attr1, freqs, tmp1) {
5503 n_channels++;
5504 /*
5505 * Some hardware has a limited channel list for
5506 * scanning, and it is pretty much nonsensical
5507 * to scan for a channel twice, so disallow that
5508 * and don't require drivers to check that the
5509 * channel list they get isn't longer than what
5510 * they can scan, as long as they can scan all
5511 * the channels they registered at once.
5512 */
5513 nla_for_each_nested(attr2, freqs, tmp2)
5514 if (attr1 != attr2 &&
5515 nla_get_u32(attr1) == nla_get_u32(attr2))
5516 return 0;
5517 }
5518
5519 return n_channels;
5520 }
5521
5522 static int nl80211_parse_random_mac(struct nlattr **attrs,
5523 u8 *mac_addr, u8 *mac_addr_mask)
5524 {
5525 int i;
5526
5527 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5528 memset(mac_addr, 0, ETH_ALEN);
5529 memset(mac_addr_mask, 0, ETH_ALEN);
5530 mac_addr[0] = 0x2;
5531 mac_addr_mask[0] = 0x3;
5532
5533 return 0;
5534 }
5535
5536 /* need both or none */
5537 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5538 return -EINVAL;
5539
5540 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5541 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5542
5543 /* don't allow or configure an mcast address */
5544 if (!is_multicast_ether_addr(mac_addr_mask) ||
5545 is_multicast_ether_addr(mac_addr))
5546 return -EINVAL;
5547
5548 /*
5549 * allow users to pass a MAC address that has bits set outside
5550 * of the mask, but don't bother drivers with having to deal
5551 * with such bits
5552 */
5553 for (i = 0; i < ETH_ALEN; i++)
5554 mac_addr[i] &= mac_addr_mask[i];
5555
5556 return 0;
5557 }
5558
5559 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5560 {
5561 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5562 struct wireless_dev *wdev = info->user_ptr[1];
5563 struct cfg80211_scan_request *request;
5564 struct nlattr *attr;
5565 struct wiphy *wiphy;
5566 int err, tmp, n_ssids = 0, n_channels, i;
5567 size_t ie_len;
5568
5569 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5570 return -EINVAL;
5571
5572 wiphy = &rdev->wiphy;
5573
5574 if (!rdev->ops->scan)
5575 return -EOPNOTSUPP;
5576
5577 if (rdev->scan_req || rdev->scan_msg) {
5578 err = -EBUSY;
5579 goto unlock;
5580 }
5581
5582 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5583 n_channels = validate_scan_freqs(
5584 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5585 if (!n_channels) {
5586 err = -EINVAL;
5587 goto unlock;
5588 }
5589 } else {
5590 n_channels = ieee80211_get_num_supported_channels(wiphy);
5591 }
5592
5593 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5594 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5595 n_ssids++;
5596
5597 if (n_ssids > wiphy->max_scan_ssids) {
5598 err = -EINVAL;
5599 goto unlock;
5600 }
5601
5602 if (info->attrs[NL80211_ATTR_IE])
5603 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5604 else
5605 ie_len = 0;
5606
5607 if (ie_len > wiphy->max_scan_ie_len) {
5608 err = -EINVAL;
5609 goto unlock;
5610 }
5611
5612 request = kzalloc(sizeof(*request)
5613 + sizeof(*request->ssids) * n_ssids
5614 + sizeof(*request->channels) * n_channels
5615 + ie_len, GFP_KERNEL);
5616 if (!request) {
5617 err = -ENOMEM;
5618 goto unlock;
5619 }
5620
5621 if (n_ssids)
5622 request->ssids = (void *)&request->channels[n_channels];
5623 request->n_ssids = n_ssids;
5624 if (ie_len) {
5625 if (request->ssids)
5626 request->ie = (void *)(request->ssids + n_ssids);
5627 else
5628 request->ie = (void *)(request->channels + n_channels);
5629 }
5630
5631 i = 0;
5632 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5633 /* user specified, bail out if channel not found */
5634 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5635 struct ieee80211_channel *chan;
5636
5637 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5638
5639 if (!chan) {
5640 err = -EINVAL;
5641 goto out_free;
5642 }
5643
5644 /* ignore disabled channels */
5645 if (chan->flags & IEEE80211_CHAN_DISABLED)
5646 continue;
5647
5648 request->channels[i] = chan;
5649 i++;
5650 }
5651 } else {
5652 enum ieee80211_band band;
5653
5654 /* all channels */
5655 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5656 int j;
5657 if (!wiphy->bands[band])
5658 continue;
5659 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5660 struct ieee80211_channel *chan;
5661
5662 chan = &wiphy->bands[band]->channels[j];
5663
5664 if (chan->flags & IEEE80211_CHAN_DISABLED)
5665 continue;
5666
5667 request->channels[i] = chan;
5668 i++;
5669 }
5670 }
5671 }
5672
5673 if (!i) {
5674 err = -EINVAL;
5675 goto out_free;
5676 }
5677
5678 request->n_channels = i;
5679
5680 i = 0;
5681 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5682 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5683 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5684 err = -EINVAL;
5685 goto out_free;
5686 }
5687 request->ssids[i].ssid_len = nla_len(attr);
5688 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5689 i++;
5690 }
5691 }
5692
5693 if (info->attrs[NL80211_ATTR_IE]) {
5694 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5695 memcpy((void *)request->ie,
5696 nla_data(info->attrs[NL80211_ATTR_IE]),
5697 request->ie_len);
5698 }
5699
5700 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5701 if (wiphy->bands[i])
5702 request->rates[i] =
5703 (1 << wiphy->bands[i]->n_bitrates) - 1;
5704
5705 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5706 nla_for_each_nested(attr,
5707 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5708 tmp) {
5709 enum ieee80211_band band = nla_type(attr);
5710
5711 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5712 err = -EINVAL;
5713 goto out_free;
5714 }
5715
5716 if (!wiphy->bands[band])
5717 continue;
5718
5719 err = ieee80211_get_ratemask(wiphy->bands[band],
5720 nla_data(attr),
5721 nla_len(attr),
5722 &request->rates[band]);
5723 if (err)
5724 goto out_free;
5725 }
5726 }
5727
5728 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5729 request->flags = nla_get_u32(
5730 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5731 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5732 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5733 err = -EOPNOTSUPP;
5734 goto out_free;
5735 }
5736
5737 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5738 if (!(wiphy->features &
5739 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5740 err = -EOPNOTSUPP;
5741 goto out_free;
5742 }
5743
5744 if (wdev->current_bss) {
5745 err = -EOPNOTSUPP;
5746 goto out_free;
5747 }
5748
5749 err = nl80211_parse_random_mac(info->attrs,
5750 request->mac_addr,
5751 request->mac_addr_mask);
5752 if (err)
5753 goto out_free;
5754 }
5755 }
5756
5757 request->no_cck =
5758 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5759
5760 request->wdev = wdev;
5761 request->wiphy = &rdev->wiphy;
5762 request->scan_start = jiffies;
5763
5764 rdev->scan_req = request;
5765 err = rdev_scan(rdev, request);
5766
5767 if (!err) {
5768 nl80211_send_scan_start(rdev, wdev);
5769 if (wdev->netdev)
5770 dev_hold(wdev->netdev);
5771 } else {
5772 out_free:
5773 rdev->scan_req = NULL;
5774 kfree(request);
5775 }
5776
5777 unlock:
5778 return err;
5779 }
5780
5781 static struct cfg80211_sched_scan_request *
5782 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5783 struct nlattr **attrs)
5784 {
5785 struct cfg80211_sched_scan_request *request;
5786 struct nlattr *attr;
5787 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5788 u32 interval;
5789 enum ieee80211_band band;
5790 size_t ie_len;
5791 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5792 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5793
5794 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5795 return ERR_PTR(-EINVAL);
5796
5797 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5798 return ERR_PTR(-EINVAL);
5799
5800 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5801 if (interval == 0)
5802 return ERR_PTR(-EINVAL);
5803
5804 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5805 n_channels = validate_scan_freqs(
5806 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5807 if (!n_channels)
5808 return ERR_PTR(-EINVAL);
5809 } else {
5810 n_channels = ieee80211_get_num_supported_channels(wiphy);
5811 }
5812
5813 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5814 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5815 tmp)
5816 n_ssids++;
5817
5818 if (n_ssids > wiphy->max_sched_scan_ssids)
5819 return ERR_PTR(-EINVAL);
5820
5821 /*
5822 * First, count the number of 'real' matchsets. Due to an issue with
5823 * the old implementation, matchsets containing only the RSSI attribute
5824 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5825 * RSSI for all matchsets, rather than their own matchset for reporting
5826 * all APs with a strong RSSI. This is needed to be compatible with
5827 * older userspace that treated a matchset with only the RSSI as the
5828 * global RSSI for all other matchsets - if there are other matchsets.
5829 */
5830 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5831 nla_for_each_nested(attr,
5832 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5833 tmp) {
5834 struct nlattr *rssi;
5835
5836 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5837 nla_data(attr), nla_len(attr),
5838 nl80211_match_policy);
5839 if (err)
5840 return ERR_PTR(err);
5841 /* add other standalone attributes here */
5842 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5843 n_match_sets++;
5844 continue;
5845 }
5846 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5847 if (rssi)
5848 default_match_rssi = nla_get_s32(rssi);
5849 }
5850 }
5851
5852 /* However, if there's no other matchset, add the RSSI one */
5853 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5854 n_match_sets = 1;
5855
5856 if (n_match_sets > wiphy->max_match_sets)
5857 return ERR_PTR(-EINVAL);
5858
5859 if (attrs[NL80211_ATTR_IE])
5860 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5861 else
5862 ie_len = 0;
5863
5864 if (ie_len > wiphy->max_sched_scan_ie_len)
5865 return ERR_PTR(-EINVAL);
5866
5867 request = kzalloc(sizeof(*request)
5868 + sizeof(*request->ssids) * n_ssids
5869 + sizeof(*request->match_sets) * n_match_sets
5870 + sizeof(*request->channels) * n_channels
5871 + ie_len, GFP_KERNEL);
5872 if (!request)
5873 return ERR_PTR(-ENOMEM);
5874
5875 if (n_ssids)
5876 request->ssids = (void *)&request->channels[n_channels];
5877 request->n_ssids = n_ssids;
5878 if (ie_len) {
5879 if (request->ssids)
5880 request->ie = (void *)(request->ssids + n_ssids);
5881 else
5882 request->ie = (void *)(request->channels + n_channels);
5883 }
5884
5885 if (n_match_sets) {
5886 if (request->ie)
5887 request->match_sets = (void *)(request->ie + ie_len);
5888 else if (request->ssids)
5889 request->match_sets =
5890 (void *)(request->ssids + n_ssids);
5891 else
5892 request->match_sets =
5893 (void *)(request->channels + n_channels);
5894 }
5895 request->n_match_sets = n_match_sets;
5896
5897 i = 0;
5898 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5899 /* user specified, bail out if channel not found */
5900 nla_for_each_nested(attr,
5901 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5902 tmp) {
5903 struct ieee80211_channel *chan;
5904
5905 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5906
5907 if (!chan) {
5908 err = -EINVAL;
5909 goto out_free;
5910 }
5911
5912 /* ignore disabled channels */
5913 if (chan->flags & IEEE80211_CHAN_DISABLED)
5914 continue;
5915
5916 request->channels[i] = chan;
5917 i++;
5918 }
5919 } else {
5920 /* all channels */
5921 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5922 int j;
5923 if (!wiphy->bands[band])
5924 continue;
5925 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5926 struct ieee80211_channel *chan;
5927
5928 chan = &wiphy->bands[band]->channels[j];
5929
5930 if (chan->flags & IEEE80211_CHAN_DISABLED)
5931 continue;
5932
5933 request->channels[i] = chan;
5934 i++;
5935 }
5936 }
5937 }
5938
5939 if (!i) {
5940 err = -EINVAL;
5941 goto out_free;
5942 }
5943
5944 request->n_channels = i;
5945
5946 i = 0;
5947 if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
5948 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5949 tmp) {
5950 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5951 err = -EINVAL;
5952 goto out_free;
5953 }
5954 request->ssids[i].ssid_len = nla_len(attr);
5955 memcpy(request->ssids[i].ssid, nla_data(attr),
5956 nla_len(attr));
5957 i++;
5958 }
5959 }
5960
5961 i = 0;
5962 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5963 nla_for_each_nested(attr,
5964 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5965 tmp) {
5966 struct nlattr *ssid, *rssi;
5967
5968 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5969 nla_data(attr), nla_len(attr),
5970 nl80211_match_policy);
5971 if (err)
5972 goto out_free;
5973 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5974 if (ssid) {
5975 if (WARN_ON(i >= n_match_sets)) {
5976 /* this indicates a programming error,
5977 * the loop above should have verified
5978 * things properly
5979 */
5980 err = -EINVAL;
5981 goto out_free;
5982 }
5983
5984 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5985 err = -EINVAL;
5986 goto out_free;
5987 }
5988 memcpy(request->match_sets[i].ssid.ssid,
5989 nla_data(ssid), nla_len(ssid));
5990 request->match_sets[i].ssid.ssid_len =
5991 nla_len(ssid);
5992 /* special attribute - old implemenation w/a */
5993 request->match_sets[i].rssi_thold =
5994 default_match_rssi;
5995 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5996 if (rssi)
5997 request->match_sets[i].rssi_thold =
5998 nla_get_s32(rssi);
5999 }
6000 i++;
6001 }
6002
6003 /* there was no other matchset, so the RSSI one is alone */
6004 if (i == 0 && n_match_sets)
6005 request->match_sets[0].rssi_thold = default_match_rssi;
6006
6007 request->min_rssi_thold = INT_MAX;
6008 for (i = 0; i < n_match_sets; i++)
6009 request->min_rssi_thold =
6010 min(request->match_sets[i].rssi_thold,
6011 request->min_rssi_thold);
6012 } else {
6013 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6014 }
6015
6016 if (ie_len) {
6017 request->ie_len = ie_len;
6018 memcpy((void *)request->ie,
6019 nla_data(attrs[NL80211_ATTR_IE]),
6020 request->ie_len);
6021 }
6022
6023 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6024 request->flags = nla_get_u32(
6025 attrs[NL80211_ATTR_SCAN_FLAGS]);
6026 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6027 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6028 err = -EOPNOTSUPP;
6029 goto out_free;
6030 }
6031
6032 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6033 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6034
6035 if (!wdev) /* must be net-detect */
6036 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6037
6038 if (!(wiphy->features & flg)) {
6039 err = -EOPNOTSUPP;
6040 goto out_free;
6041 }
6042
6043 if (wdev && wdev->current_bss) {
6044 err = -EOPNOTSUPP;
6045 goto out_free;
6046 }
6047
6048 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6049 request->mac_addr_mask);
6050 if (err)
6051 goto out_free;
6052 }
6053 }
6054
6055 request->interval = interval;
6056 request->scan_start = jiffies;
6057
6058 return request;
6059
6060 out_free:
6061 kfree(request);
6062 return ERR_PTR(err);
6063 }
6064
6065 static int nl80211_start_sched_scan(struct sk_buff *skb,
6066 struct genl_info *info)
6067 {
6068 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6069 struct net_device *dev = info->user_ptr[1];
6070 struct wireless_dev *wdev = dev->ieee80211_ptr;
6071 int err;
6072
6073 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6074 !rdev->ops->sched_scan_start)
6075 return -EOPNOTSUPP;
6076
6077 if (rdev->sched_scan_req)
6078 return -EINPROGRESS;
6079
6080 rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6081 info->attrs);
6082 err = PTR_ERR_OR_ZERO(rdev->sched_scan_req);
6083 if (err)
6084 goto out_err;
6085
6086 err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req);
6087 if (err)
6088 goto out_free;
6089
6090 rdev->sched_scan_req->dev = dev;
6091 rdev->sched_scan_req->wiphy = &rdev->wiphy;
6092
6093 nl80211_send_sched_scan(rdev, dev,
6094 NL80211_CMD_START_SCHED_SCAN);
6095 return 0;
6096
6097 out_free:
6098 kfree(rdev->sched_scan_req);
6099 out_err:
6100 rdev->sched_scan_req = NULL;
6101 return err;
6102 }
6103
6104 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6105 struct genl_info *info)
6106 {
6107 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6108
6109 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6110 !rdev->ops->sched_scan_stop)
6111 return -EOPNOTSUPP;
6112
6113 return __cfg80211_stop_sched_scan(rdev, false);
6114 }
6115
6116 static int nl80211_start_radar_detection(struct sk_buff *skb,
6117 struct genl_info *info)
6118 {
6119 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6120 struct net_device *dev = info->user_ptr[1];
6121 struct wireless_dev *wdev = dev->ieee80211_ptr;
6122 struct cfg80211_chan_def chandef;
6123 enum nl80211_dfs_regions dfs_region;
6124 unsigned int cac_time_ms;
6125 int err;
6126
6127 dfs_region = reg_get_dfs_region(wdev->wiphy);
6128 if (dfs_region == NL80211_DFS_UNSET)
6129 return -EINVAL;
6130
6131 err = nl80211_parse_chandef(rdev, info, &chandef);
6132 if (err)
6133 return err;
6134
6135 if (netif_carrier_ok(dev))
6136 return -EBUSY;
6137
6138 if (wdev->cac_started)
6139 return -EBUSY;
6140
6141 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6142 wdev->iftype);
6143 if (err < 0)
6144 return err;
6145
6146 if (err == 0)
6147 return -EINVAL;
6148
6149 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6150 return -EINVAL;
6151
6152 if (!rdev->ops->start_radar_detection)
6153 return -EOPNOTSUPP;
6154
6155 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6156 if (WARN_ON(!cac_time_ms))
6157 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6158
6159 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6160 cac_time_ms);
6161 if (!err) {
6162 wdev->chandef = chandef;
6163 wdev->cac_started = true;
6164 wdev->cac_start_time = jiffies;
6165 wdev->cac_time_ms = cac_time_ms;
6166 }
6167 return err;
6168 }
6169
6170 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6171 {
6172 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6173 struct net_device *dev = info->user_ptr[1];
6174 struct wireless_dev *wdev = dev->ieee80211_ptr;
6175 struct cfg80211_csa_settings params;
6176 /* csa_attrs is defined static to avoid waste of stack size - this
6177 * function is called under RTNL lock, so this should not be a problem.
6178 */
6179 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6180 int err;
6181 bool need_new_beacon = false;
6182 int len, i;
6183 u32 cs_count;
6184
6185 if (!rdev->ops->channel_switch ||
6186 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6187 return -EOPNOTSUPP;
6188
6189 switch (dev->ieee80211_ptr->iftype) {
6190 case NL80211_IFTYPE_AP:
6191 case NL80211_IFTYPE_P2P_GO:
6192 need_new_beacon = true;
6193
6194 /* useless if AP is not running */
6195 if (!wdev->beacon_interval)
6196 return -ENOTCONN;
6197 break;
6198 case NL80211_IFTYPE_ADHOC:
6199 if (!wdev->ssid_len)
6200 return -ENOTCONN;
6201 break;
6202 case NL80211_IFTYPE_MESH_POINT:
6203 if (!wdev->mesh_id_len)
6204 return -ENOTCONN;
6205 break;
6206 default:
6207 return -EOPNOTSUPP;
6208 }
6209
6210 memset(&params, 0, sizeof(params));
6211
6212 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6213 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6214 return -EINVAL;
6215
6216 /* only important for AP, IBSS and mesh create IEs internally */
6217 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6218 return -EINVAL;
6219
6220 /* Even though the attribute is u32, the specification says
6221 * u8, so let's make sure we don't overflow.
6222 */
6223 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6224 if (cs_count > 255)
6225 return -EINVAL;
6226
6227 params.count = cs_count;
6228
6229 if (!need_new_beacon)
6230 goto skip_beacons;
6231
6232 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6233 if (err)
6234 return err;
6235
6236 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6237 info->attrs[NL80211_ATTR_CSA_IES],
6238 nl80211_policy);
6239 if (err)
6240 return err;
6241
6242 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6243 if (err)
6244 return err;
6245
6246 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6247 return -EINVAL;
6248
6249 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6250 if (!len || (len % sizeof(u16)))
6251 return -EINVAL;
6252
6253 params.n_counter_offsets_beacon = len / sizeof(u16);
6254 if (rdev->wiphy.max_num_csa_counters &&
6255 (params.n_counter_offsets_beacon >
6256 rdev->wiphy.max_num_csa_counters))
6257 return -EINVAL;
6258
6259 params.counter_offsets_beacon =
6260 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6261
6262 /* sanity checks - counters should fit and be the same */
6263 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6264 u16 offset = params.counter_offsets_beacon[i];
6265
6266 if (offset >= params.beacon_csa.tail_len)
6267 return -EINVAL;
6268
6269 if (params.beacon_csa.tail[offset] != params.count)
6270 return -EINVAL;
6271 }
6272
6273 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6274 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6275 if (!len || (len % sizeof(u16)))
6276 return -EINVAL;
6277
6278 params.n_counter_offsets_presp = len / sizeof(u16);
6279 if (rdev->wiphy.max_num_csa_counters &&
6280 (params.n_counter_offsets_beacon >
6281 rdev->wiphy.max_num_csa_counters))
6282 return -EINVAL;
6283
6284 params.counter_offsets_presp =
6285 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6286
6287 /* sanity checks - counters should fit and be the same */
6288 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6289 u16 offset = params.counter_offsets_presp[i];
6290
6291 if (offset >= params.beacon_csa.probe_resp_len)
6292 return -EINVAL;
6293
6294 if (params.beacon_csa.probe_resp[offset] !=
6295 params.count)
6296 return -EINVAL;
6297 }
6298 }
6299
6300 skip_beacons:
6301 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6302 if (err)
6303 return err;
6304
6305 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6306 wdev->iftype))
6307 return -EINVAL;
6308
6309 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6310 &params.chandef,
6311 wdev->iftype);
6312 if (err < 0)
6313 return err;
6314
6315 if (err > 0)
6316 params.radar_required = true;
6317
6318 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6319 params.block_tx = true;
6320
6321 wdev_lock(wdev);
6322 err = rdev_channel_switch(rdev, dev, &params);
6323 wdev_unlock(wdev);
6324
6325 return err;
6326 }
6327
6328 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6329 u32 seq, int flags,
6330 struct cfg80211_registered_device *rdev,
6331 struct wireless_dev *wdev,
6332 struct cfg80211_internal_bss *intbss)
6333 {
6334 struct cfg80211_bss *res = &intbss->pub;
6335 const struct cfg80211_bss_ies *ies;
6336 void *hdr;
6337 struct nlattr *bss;
6338
6339 ASSERT_WDEV_LOCK(wdev);
6340
6341 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6342 NL80211_CMD_NEW_SCAN_RESULTS);
6343 if (!hdr)
6344 return -1;
6345
6346 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6347
6348 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6349 goto nla_put_failure;
6350 if (wdev->netdev &&
6351 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6352 goto nla_put_failure;
6353 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6354 goto nla_put_failure;
6355
6356 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6357 if (!bss)
6358 goto nla_put_failure;
6359 if ((!is_zero_ether_addr(res->bssid) &&
6360 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6361 goto nla_put_failure;
6362
6363 rcu_read_lock();
6364 /* indicate whether we have probe response data or not */
6365 if (rcu_access_pointer(res->proberesp_ies) &&
6366 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6367 goto fail_unlock_rcu;
6368
6369 /* this pointer prefers to be pointed to probe response data
6370 * but is always valid
6371 */
6372 ies = rcu_dereference(res->ies);
6373 if (ies) {
6374 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6375 goto fail_unlock_rcu;
6376 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6377 ies->len, ies->data))
6378 goto fail_unlock_rcu;
6379 }
6380
6381 /* and this pointer is always (unless driver didn't know) beacon data */
6382 ies = rcu_dereference(res->beacon_ies);
6383 if (ies && ies->from_beacon) {
6384 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6385 goto fail_unlock_rcu;
6386 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6387 ies->len, ies->data))
6388 goto fail_unlock_rcu;
6389 }
6390 rcu_read_unlock();
6391
6392 if (res->beacon_interval &&
6393 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6394 goto nla_put_failure;
6395 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6396 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6397 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6398 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6399 jiffies_to_msecs(jiffies - intbss->ts)))
6400 goto nla_put_failure;
6401
6402 switch (rdev->wiphy.signal_type) {
6403 case CFG80211_SIGNAL_TYPE_MBM:
6404 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6405 goto nla_put_failure;
6406 break;
6407 case CFG80211_SIGNAL_TYPE_UNSPEC:
6408 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6409 goto nla_put_failure;
6410 break;
6411 default:
6412 break;
6413 }
6414
6415 switch (wdev->iftype) {
6416 case NL80211_IFTYPE_P2P_CLIENT:
6417 case NL80211_IFTYPE_STATION:
6418 if (intbss == wdev->current_bss &&
6419 nla_put_u32(msg, NL80211_BSS_STATUS,
6420 NL80211_BSS_STATUS_ASSOCIATED))
6421 goto nla_put_failure;
6422 break;
6423 case NL80211_IFTYPE_ADHOC:
6424 if (intbss == wdev->current_bss &&
6425 nla_put_u32(msg, NL80211_BSS_STATUS,
6426 NL80211_BSS_STATUS_IBSS_JOINED))
6427 goto nla_put_failure;
6428 break;
6429 default:
6430 break;
6431 }
6432
6433 nla_nest_end(msg, bss);
6434
6435 return genlmsg_end(msg, hdr);
6436
6437 fail_unlock_rcu:
6438 rcu_read_unlock();
6439 nla_put_failure:
6440 genlmsg_cancel(msg, hdr);
6441 return -EMSGSIZE;
6442 }
6443
6444 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6445 {
6446 struct cfg80211_registered_device *rdev;
6447 struct cfg80211_internal_bss *scan;
6448 struct wireless_dev *wdev;
6449 int start = cb->args[2], idx = 0;
6450 int err;
6451
6452 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6453 if (err)
6454 return err;
6455
6456 wdev_lock(wdev);
6457 spin_lock_bh(&rdev->bss_lock);
6458 cfg80211_bss_expire(rdev);
6459
6460 cb->seq = rdev->bss_generation;
6461
6462 list_for_each_entry(scan, &rdev->bss_list, list) {
6463 if (++idx <= start)
6464 continue;
6465 if (nl80211_send_bss(skb, cb,
6466 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6467 rdev, wdev, scan) < 0) {
6468 idx--;
6469 break;
6470 }
6471 }
6472
6473 spin_unlock_bh(&rdev->bss_lock);
6474 wdev_unlock(wdev);
6475
6476 cb->args[2] = idx;
6477 nl80211_finish_wdev_dump(rdev);
6478
6479 return skb->len;
6480 }
6481
6482 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6483 int flags, struct net_device *dev,
6484 struct survey_info *survey)
6485 {
6486 void *hdr;
6487 struct nlattr *infoattr;
6488
6489 hdr = nl80211hdr_put(msg, portid, seq, flags,
6490 NL80211_CMD_NEW_SURVEY_RESULTS);
6491 if (!hdr)
6492 return -ENOMEM;
6493
6494 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6495 goto nla_put_failure;
6496
6497 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6498 if (!infoattr)
6499 goto nla_put_failure;
6500
6501 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6502 survey->channel->center_freq))
6503 goto nla_put_failure;
6504
6505 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6506 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6507 goto nla_put_failure;
6508 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6509 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6510 goto nla_put_failure;
6511 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6512 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6513 survey->channel_time))
6514 goto nla_put_failure;
6515 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6516 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6517 survey->channel_time_busy))
6518 goto nla_put_failure;
6519 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6520 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6521 survey->channel_time_ext_busy))
6522 goto nla_put_failure;
6523 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6524 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6525 survey->channel_time_rx))
6526 goto nla_put_failure;
6527 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6528 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6529 survey->channel_time_tx))
6530 goto nla_put_failure;
6531
6532 nla_nest_end(msg, infoattr);
6533
6534 return genlmsg_end(msg, hdr);
6535
6536 nla_put_failure:
6537 genlmsg_cancel(msg, hdr);
6538 return -EMSGSIZE;
6539 }
6540
6541 static int nl80211_dump_survey(struct sk_buff *skb,
6542 struct netlink_callback *cb)
6543 {
6544 struct survey_info survey;
6545 struct cfg80211_registered_device *rdev;
6546 struct wireless_dev *wdev;
6547 int survey_idx = cb->args[2];
6548 int res;
6549
6550 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6551 if (res)
6552 return res;
6553
6554 if (!wdev->netdev) {
6555 res = -EINVAL;
6556 goto out_err;
6557 }
6558
6559 if (!rdev->ops->dump_survey) {
6560 res = -EOPNOTSUPP;
6561 goto out_err;
6562 }
6563
6564 while (1) {
6565 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6566 if (res == -ENOENT)
6567 break;
6568 if (res)
6569 goto out_err;
6570
6571 /* Survey without a channel doesn't make sense */
6572 if (!survey.channel) {
6573 res = -EINVAL;
6574 goto out;
6575 }
6576
6577 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6578 survey_idx++;
6579 continue;
6580 }
6581
6582 if (nl80211_send_survey(skb,
6583 NETLINK_CB(cb->skb).portid,
6584 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6585 wdev->netdev, &survey) < 0)
6586 goto out;
6587 survey_idx++;
6588 }
6589
6590 out:
6591 cb->args[2] = survey_idx;
6592 res = skb->len;
6593 out_err:
6594 nl80211_finish_wdev_dump(rdev);
6595 return res;
6596 }
6597
6598 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6599 {
6600 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6601 NL80211_WPA_VERSION_2));
6602 }
6603
6604 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6605 {
6606 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6607 struct net_device *dev = info->user_ptr[1];
6608 struct ieee80211_channel *chan;
6609 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6610 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6611 enum nl80211_auth_type auth_type;
6612 struct key_parse key;
6613 bool local_state_change;
6614
6615 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6616 return -EINVAL;
6617
6618 if (!info->attrs[NL80211_ATTR_MAC])
6619 return -EINVAL;
6620
6621 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6622 return -EINVAL;
6623
6624 if (!info->attrs[NL80211_ATTR_SSID])
6625 return -EINVAL;
6626
6627 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6628 return -EINVAL;
6629
6630 err = nl80211_parse_key(info, &key);
6631 if (err)
6632 return err;
6633
6634 if (key.idx >= 0) {
6635 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6636 return -EINVAL;
6637 if (!key.p.key || !key.p.key_len)
6638 return -EINVAL;
6639 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6640 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6641 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6642 key.p.key_len != WLAN_KEY_LEN_WEP104))
6643 return -EINVAL;
6644 if (key.idx > 4)
6645 return -EINVAL;
6646 } else {
6647 key.p.key_len = 0;
6648 key.p.key = NULL;
6649 }
6650
6651 if (key.idx >= 0) {
6652 int i;
6653 bool ok = false;
6654 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6655 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6656 ok = true;
6657 break;
6658 }
6659 }
6660 if (!ok)
6661 return -EINVAL;
6662 }
6663
6664 if (!rdev->ops->auth)
6665 return -EOPNOTSUPP;
6666
6667 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6668 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6669 return -EOPNOTSUPP;
6670
6671 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6672 chan = nl80211_get_valid_chan(&rdev->wiphy,
6673 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6674 if (!chan)
6675 return -EINVAL;
6676
6677 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6678 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6679
6680 if (info->attrs[NL80211_ATTR_IE]) {
6681 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6682 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6683 }
6684
6685 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6686 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6687 return -EINVAL;
6688
6689 if (auth_type == NL80211_AUTHTYPE_SAE &&
6690 !info->attrs[NL80211_ATTR_SAE_DATA])
6691 return -EINVAL;
6692
6693 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6694 if (auth_type != NL80211_AUTHTYPE_SAE)
6695 return -EINVAL;
6696 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6697 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6698 /* need to include at least Auth Transaction and Status Code */
6699 if (sae_data_len < 4)
6700 return -EINVAL;
6701 }
6702
6703 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6704
6705 /*
6706 * Since we no longer track auth state, ignore
6707 * requests to only change local state.
6708 */
6709 if (local_state_change)
6710 return 0;
6711
6712 wdev_lock(dev->ieee80211_ptr);
6713 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6714 ssid, ssid_len, ie, ie_len,
6715 key.p.key, key.p.key_len, key.idx,
6716 sae_data, sae_data_len);
6717 wdev_unlock(dev->ieee80211_ptr);
6718 return err;
6719 }
6720
6721 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6722 struct genl_info *info,
6723 struct cfg80211_crypto_settings *settings,
6724 int cipher_limit)
6725 {
6726 memset(settings, 0, sizeof(*settings));
6727
6728 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6729
6730 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6731 u16 proto;
6732 proto = nla_get_u16(
6733 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6734 settings->control_port_ethertype = cpu_to_be16(proto);
6735 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6736 proto != ETH_P_PAE)
6737 return -EINVAL;
6738 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6739 settings->control_port_no_encrypt = true;
6740 } else
6741 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6742
6743 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6744 void *data;
6745 int len, i;
6746
6747 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6748 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6749 settings->n_ciphers_pairwise = len / sizeof(u32);
6750
6751 if (len % sizeof(u32))
6752 return -EINVAL;
6753
6754 if (settings->n_ciphers_pairwise > cipher_limit)
6755 return -EINVAL;
6756
6757 memcpy(settings->ciphers_pairwise, data, len);
6758
6759 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6760 if (!cfg80211_supported_cipher_suite(
6761 &rdev->wiphy,
6762 settings->ciphers_pairwise[i]))
6763 return -EINVAL;
6764 }
6765
6766 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6767 settings->cipher_group =
6768 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6769 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6770 settings->cipher_group))
6771 return -EINVAL;
6772 }
6773
6774 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6775 settings->wpa_versions =
6776 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6777 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6778 return -EINVAL;
6779 }
6780
6781 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6782 void *data;
6783 int len;
6784
6785 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6786 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6787 settings->n_akm_suites = len / sizeof(u32);
6788
6789 if (len % sizeof(u32))
6790 return -EINVAL;
6791
6792 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6793 return -EINVAL;
6794
6795 memcpy(settings->akm_suites, data, len);
6796 }
6797
6798 return 0;
6799 }
6800
6801 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6802 {
6803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6804 struct net_device *dev = info->user_ptr[1];
6805 struct ieee80211_channel *chan;
6806 struct cfg80211_assoc_request req = {};
6807 const u8 *bssid, *ssid;
6808 int err, ssid_len = 0;
6809
6810 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6811 return -EINVAL;
6812
6813 if (!info->attrs[NL80211_ATTR_MAC] ||
6814 !info->attrs[NL80211_ATTR_SSID] ||
6815 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6816 return -EINVAL;
6817
6818 if (!rdev->ops->assoc)
6819 return -EOPNOTSUPP;
6820
6821 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6822 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6823 return -EOPNOTSUPP;
6824
6825 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6826
6827 chan = nl80211_get_valid_chan(&rdev->wiphy,
6828 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6829 if (!chan)
6830 return -EINVAL;
6831
6832 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6833 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6834
6835 if (info->attrs[NL80211_ATTR_IE]) {
6836 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6837 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6838 }
6839
6840 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6841 enum nl80211_mfp mfp =
6842 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6843 if (mfp == NL80211_MFP_REQUIRED)
6844 req.use_mfp = true;
6845 else if (mfp != NL80211_MFP_NO)
6846 return -EINVAL;
6847 }
6848
6849 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6850 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6851
6852 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6853 req.flags |= ASSOC_REQ_DISABLE_HT;
6854
6855 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6856 memcpy(&req.ht_capa_mask,
6857 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6858 sizeof(req.ht_capa_mask));
6859
6860 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6861 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6862 return -EINVAL;
6863 memcpy(&req.ht_capa,
6864 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6865 sizeof(req.ht_capa));
6866 }
6867
6868 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6869 req.flags |= ASSOC_REQ_DISABLE_VHT;
6870
6871 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6872 memcpy(&req.vht_capa_mask,
6873 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6874 sizeof(req.vht_capa_mask));
6875
6876 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6877 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6878 return -EINVAL;
6879 memcpy(&req.vht_capa,
6880 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6881 sizeof(req.vht_capa));
6882 }
6883
6884 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6885 if (!(rdev->wiphy.features &
6886 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6887 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6888 return -EINVAL;
6889 req.flags |= ASSOC_REQ_USE_RRM;
6890 }
6891
6892 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6893 if (!err) {
6894 wdev_lock(dev->ieee80211_ptr);
6895 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6896 ssid, ssid_len, &req);
6897 wdev_unlock(dev->ieee80211_ptr);
6898 }
6899
6900 return err;
6901 }
6902
6903 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6904 {
6905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6906 struct net_device *dev = info->user_ptr[1];
6907 const u8 *ie = NULL, *bssid;
6908 int ie_len = 0, err;
6909 u16 reason_code;
6910 bool local_state_change;
6911
6912 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6913 return -EINVAL;
6914
6915 if (!info->attrs[NL80211_ATTR_MAC])
6916 return -EINVAL;
6917
6918 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6919 return -EINVAL;
6920
6921 if (!rdev->ops->deauth)
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 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6931 if (reason_code == 0) {
6932 /* Reason Code 0 is reserved */
6933 return -EINVAL;
6934 }
6935
6936 if (info->attrs[NL80211_ATTR_IE]) {
6937 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6938 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6939 }
6940
6941 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6942
6943 wdev_lock(dev->ieee80211_ptr);
6944 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6945 local_state_change);
6946 wdev_unlock(dev->ieee80211_ptr);
6947 return err;
6948 }
6949
6950 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6951 {
6952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6953 struct net_device *dev = info->user_ptr[1];
6954 const u8 *ie = NULL, *bssid;
6955 int ie_len = 0, err;
6956 u16 reason_code;
6957 bool local_state_change;
6958
6959 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6960 return -EINVAL;
6961
6962 if (!info->attrs[NL80211_ATTR_MAC])
6963 return -EINVAL;
6964
6965 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6966 return -EINVAL;
6967
6968 if (!rdev->ops->disassoc)
6969 return -EOPNOTSUPP;
6970
6971 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6972 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6973 return -EOPNOTSUPP;
6974
6975 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6976
6977 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6978 if (reason_code == 0) {
6979 /* Reason Code 0 is reserved */
6980 return -EINVAL;
6981 }
6982
6983 if (info->attrs[NL80211_ATTR_IE]) {
6984 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6985 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6986 }
6987
6988 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6989
6990 wdev_lock(dev->ieee80211_ptr);
6991 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6992 local_state_change);
6993 wdev_unlock(dev->ieee80211_ptr);
6994 return err;
6995 }
6996
6997 static bool
6998 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6999 int mcast_rate[IEEE80211_NUM_BANDS],
7000 int rateval)
7001 {
7002 struct wiphy *wiphy = &rdev->wiphy;
7003 bool found = false;
7004 int band, i;
7005
7006 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7007 struct ieee80211_supported_band *sband;
7008
7009 sband = wiphy->bands[band];
7010 if (!sband)
7011 continue;
7012
7013 for (i = 0; i < sband->n_bitrates; i++) {
7014 if (sband->bitrates[i].bitrate == rateval) {
7015 mcast_rate[band] = i + 1;
7016 found = true;
7017 break;
7018 }
7019 }
7020 }
7021
7022 return found;
7023 }
7024
7025 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7026 {
7027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028 struct net_device *dev = info->user_ptr[1];
7029 struct cfg80211_ibss_params ibss;
7030 struct wiphy *wiphy;
7031 struct cfg80211_cached_keys *connkeys = NULL;
7032 int err;
7033
7034 memset(&ibss, 0, sizeof(ibss));
7035
7036 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7037 return -EINVAL;
7038
7039 if (!info->attrs[NL80211_ATTR_SSID] ||
7040 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7041 return -EINVAL;
7042
7043 ibss.beacon_interval = 100;
7044
7045 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7046 ibss.beacon_interval =
7047 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7048 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7049 return -EINVAL;
7050 }
7051
7052 if (!rdev->ops->join_ibss)
7053 return -EOPNOTSUPP;
7054
7055 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7056 return -EOPNOTSUPP;
7057
7058 wiphy = &rdev->wiphy;
7059
7060 if (info->attrs[NL80211_ATTR_MAC]) {
7061 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7062
7063 if (!is_valid_ether_addr(ibss.bssid))
7064 return -EINVAL;
7065 }
7066 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7067 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7068
7069 if (info->attrs[NL80211_ATTR_IE]) {
7070 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7071 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7072 }
7073
7074 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7075 if (err)
7076 return err;
7077
7078 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7079 NL80211_IFTYPE_ADHOC))
7080 return -EINVAL;
7081
7082 switch (ibss.chandef.width) {
7083 case NL80211_CHAN_WIDTH_5:
7084 case NL80211_CHAN_WIDTH_10:
7085 case NL80211_CHAN_WIDTH_20_NOHT:
7086 break;
7087 case NL80211_CHAN_WIDTH_20:
7088 case NL80211_CHAN_WIDTH_40:
7089 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7090 break;
7091 default:
7092 return -EINVAL;
7093 }
7094
7095 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7096 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7097
7098 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7099 u8 *rates =
7100 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7101 int n_rates =
7102 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7103 struct ieee80211_supported_band *sband =
7104 wiphy->bands[ibss.chandef.chan->band];
7105
7106 err = ieee80211_get_ratemask(sband, rates, n_rates,
7107 &ibss.basic_rates);
7108 if (err)
7109 return err;
7110 }
7111
7112 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7113 memcpy(&ibss.ht_capa_mask,
7114 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7115 sizeof(ibss.ht_capa_mask));
7116
7117 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7118 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7119 return -EINVAL;
7120 memcpy(&ibss.ht_capa,
7121 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7122 sizeof(ibss.ht_capa));
7123 }
7124
7125 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7126 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7127 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7128 return -EINVAL;
7129
7130 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7131 bool no_ht = false;
7132
7133 connkeys = nl80211_parse_connkeys(rdev,
7134 info->attrs[NL80211_ATTR_KEYS],
7135 &no_ht);
7136 if (IS_ERR(connkeys))
7137 return PTR_ERR(connkeys);
7138
7139 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7140 no_ht) {
7141 kfree(connkeys);
7142 return -EINVAL;
7143 }
7144 }
7145
7146 ibss.control_port =
7147 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7148
7149 ibss.userspace_handles_dfs =
7150 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7151
7152 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7153 if (err)
7154 kzfree(connkeys);
7155 return err;
7156 }
7157
7158 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7159 {
7160 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7161 struct net_device *dev = info->user_ptr[1];
7162
7163 if (!rdev->ops->leave_ibss)
7164 return -EOPNOTSUPP;
7165
7166 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7167 return -EOPNOTSUPP;
7168
7169 return cfg80211_leave_ibss(rdev, dev, false);
7170 }
7171
7172 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7173 {
7174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7175 struct net_device *dev = info->user_ptr[1];
7176 int mcast_rate[IEEE80211_NUM_BANDS];
7177 u32 nla_rate;
7178 int err;
7179
7180 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7181 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7182 return -EOPNOTSUPP;
7183
7184 if (!rdev->ops->set_mcast_rate)
7185 return -EOPNOTSUPP;
7186
7187 memset(mcast_rate, 0, sizeof(mcast_rate));
7188
7189 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7190 return -EINVAL;
7191
7192 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7193 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7194 return -EINVAL;
7195
7196 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7197
7198 return err;
7199 }
7200
7201 static struct sk_buff *
7202 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7203 int approxlen, u32 portid, u32 seq,
7204 enum nl80211_commands cmd,
7205 enum nl80211_attrs attr,
7206 const struct nl80211_vendor_cmd_info *info,
7207 gfp_t gfp)
7208 {
7209 struct sk_buff *skb;
7210 void *hdr;
7211 struct nlattr *data;
7212
7213 skb = nlmsg_new(approxlen + 100, gfp);
7214 if (!skb)
7215 return NULL;
7216
7217 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7218 if (!hdr) {
7219 kfree_skb(skb);
7220 return NULL;
7221 }
7222
7223 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7224 goto nla_put_failure;
7225
7226 if (info) {
7227 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7228 info->vendor_id))
7229 goto nla_put_failure;
7230 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7231 info->subcmd))
7232 goto nla_put_failure;
7233 }
7234
7235 data = nla_nest_start(skb, attr);
7236
7237 ((void **)skb->cb)[0] = rdev;
7238 ((void **)skb->cb)[1] = hdr;
7239 ((void **)skb->cb)[2] = data;
7240
7241 return skb;
7242
7243 nla_put_failure:
7244 kfree_skb(skb);
7245 return NULL;
7246 }
7247
7248 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7249 enum nl80211_commands cmd,
7250 enum nl80211_attrs attr,
7251 int vendor_event_idx,
7252 int approxlen, gfp_t gfp)
7253 {
7254 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7255 const struct nl80211_vendor_cmd_info *info;
7256
7257 switch (cmd) {
7258 case NL80211_CMD_TESTMODE:
7259 if (WARN_ON(vendor_event_idx != -1))
7260 return NULL;
7261 info = NULL;
7262 break;
7263 case NL80211_CMD_VENDOR:
7264 if (WARN_ON(vendor_event_idx < 0 ||
7265 vendor_event_idx >= wiphy->n_vendor_events))
7266 return NULL;
7267 info = &wiphy->vendor_events[vendor_event_idx];
7268 break;
7269 default:
7270 WARN_ON(1);
7271 return NULL;
7272 }
7273
7274 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7275 cmd, attr, info, gfp);
7276 }
7277 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7278
7279 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7280 {
7281 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7282 void *hdr = ((void **)skb->cb)[1];
7283 struct nlattr *data = ((void **)skb->cb)[2];
7284 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7285
7286 /* clear CB data for netlink core to own from now on */
7287 memset(skb->cb, 0, sizeof(skb->cb));
7288
7289 nla_nest_end(skb, data);
7290 genlmsg_end(skb, hdr);
7291
7292 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7293 mcgrp = NL80211_MCGRP_VENDOR;
7294
7295 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7296 mcgrp, gfp);
7297 }
7298 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7299
7300 #ifdef CONFIG_NL80211_TESTMODE
7301 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7302 {
7303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7304 struct wireless_dev *wdev =
7305 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7306 int err;
7307
7308 if (!rdev->ops->testmode_cmd)
7309 return -EOPNOTSUPP;
7310
7311 if (IS_ERR(wdev)) {
7312 err = PTR_ERR(wdev);
7313 if (err != -EINVAL)
7314 return err;
7315 wdev = NULL;
7316 } else if (wdev->wiphy != &rdev->wiphy) {
7317 return -EINVAL;
7318 }
7319
7320 if (!info->attrs[NL80211_ATTR_TESTDATA])
7321 return -EINVAL;
7322
7323 rdev->cur_cmd_info = info;
7324 err = rdev_testmode_cmd(rdev, wdev,
7325 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7326 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7327 rdev->cur_cmd_info = NULL;
7328
7329 return err;
7330 }
7331
7332 static int nl80211_testmode_dump(struct sk_buff *skb,
7333 struct netlink_callback *cb)
7334 {
7335 struct cfg80211_registered_device *rdev;
7336 int err;
7337 long phy_idx;
7338 void *data = NULL;
7339 int data_len = 0;
7340
7341 rtnl_lock();
7342
7343 if (cb->args[0]) {
7344 /*
7345 * 0 is a valid index, but not valid for args[0],
7346 * so we need to offset by 1.
7347 */
7348 phy_idx = cb->args[0] - 1;
7349 } else {
7350 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7351 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7352 nl80211_policy);
7353 if (err)
7354 goto out_err;
7355
7356 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7357 nl80211_fam.attrbuf);
7358 if (IS_ERR(rdev)) {
7359 err = PTR_ERR(rdev);
7360 goto out_err;
7361 }
7362 phy_idx = rdev->wiphy_idx;
7363 rdev = NULL;
7364
7365 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7366 cb->args[1] =
7367 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7368 }
7369
7370 if (cb->args[1]) {
7371 data = nla_data((void *)cb->args[1]);
7372 data_len = nla_len((void *)cb->args[1]);
7373 }
7374
7375 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7376 if (!rdev) {
7377 err = -ENOENT;
7378 goto out_err;
7379 }
7380
7381 if (!rdev->ops->testmode_dump) {
7382 err = -EOPNOTSUPP;
7383 goto out_err;
7384 }
7385
7386 while (1) {
7387 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7388 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7389 NL80211_CMD_TESTMODE);
7390 struct nlattr *tmdata;
7391
7392 if (!hdr)
7393 break;
7394
7395 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7396 genlmsg_cancel(skb, hdr);
7397 break;
7398 }
7399
7400 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7401 if (!tmdata) {
7402 genlmsg_cancel(skb, hdr);
7403 break;
7404 }
7405 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7406 nla_nest_end(skb, tmdata);
7407
7408 if (err == -ENOBUFS || err == -ENOENT) {
7409 genlmsg_cancel(skb, hdr);
7410 break;
7411 } else if (err) {
7412 genlmsg_cancel(skb, hdr);
7413 goto out_err;
7414 }
7415
7416 genlmsg_end(skb, hdr);
7417 }
7418
7419 err = skb->len;
7420 /* see above */
7421 cb->args[0] = phy_idx + 1;
7422 out_err:
7423 rtnl_unlock();
7424 return err;
7425 }
7426 #endif
7427
7428 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7429 {
7430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7431 struct net_device *dev = info->user_ptr[1];
7432 struct cfg80211_connect_params connect;
7433 struct wiphy *wiphy;
7434 struct cfg80211_cached_keys *connkeys = NULL;
7435 int err;
7436
7437 memset(&connect, 0, sizeof(connect));
7438
7439 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7440 return -EINVAL;
7441
7442 if (!info->attrs[NL80211_ATTR_SSID] ||
7443 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7444 return -EINVAL;
7445
7446 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7447 connect.auth_type =
7448 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7449 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7450 NL80211_CMD_CONNECT))
7451 return -EINVAL;
7452 } else
7453 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7454
7455 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7456
7457 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7458 NL80211_MAX_NR_CIPHER_SUITES);
7459 if (err)
7460 return err;
7461
7462 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7463 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7464 return -EOPNOTSUPP;
7465
7466 wiphy = &rdev->wiphy;
7467
7468 connect.bg_scan_period = -1;
7469 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7470 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7471 connect.bg_scan_period =
7472 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7473 }
7474
7475 if (info->attrs[NL80211_ATTR_MAC])
7476 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7477 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7478 connect.bssid_hint =
7479 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7480 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7481 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7482
7483 if (info->attrs[NL80211_ATTR_IE]) {
7484 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7485 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7486 }
7487
7488 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7489 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7490 if (connect.mfp != NL80211_MFP_REQUIRED &&
7491 connect.mfp != NL80211_MFP_NO)
7492 return -EINVAL;
7493 } else {
7494 connect.mfp = NL80211_MFP_NO;
7495 }
7496
7497 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7498 connect.channel = nl80211_get_valid_chan(
7499 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7500 if (!connect.channel)
7501 return -EINVAL;
7502 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7503 connect.channel_hint = nl80211_get_valid_chan(
7504 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7505 if (!connect.channel_hint)
7506 return -EINVAL;
7507 }
7508
7509 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7510 connkeys = nl80211_parse_connkeys(rdev,
7511 info->attrs[NL80211_ATTR_KEYS], NULL);
7512 if (IS_ERR(connkeys))
7513 return PTR_ERR(connkeys);
7514 }
7515
7516 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7517 connect.flags |= ASSOC_REQ_DISABLE_HT;
7518
7519 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7520 memcpy(&connect.ht_capa_mask,
7521 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7522 sizeof(connect.ht_capa_mask));
7523
7524 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7525 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7526 kzfree(connkeys);
7527 return -EINVAL;
7528 }
7529 memcpy(&connect.ht_capa,
7530 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7531 sizeof(connect.ht_capa));
7532 }
7533
7534 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7535 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7536
7537 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7538 memcpy(&connect.vht_capa_mask,
7539 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7540 sizeof(connect.vht_capa_mask));
7541
7542 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7543 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7544 kzfree(connkeys);
7545 return -EINVAL;
7546 }
7547 memcpy(&connect.vht_capa,
7548 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7549 sizeof(connect.vht_capa));
7550 }
7551
7552 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7553 if (!(rdev->wiphy.features &
7554 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7555 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7556 return -EINVAL;
7557 connect.flags |= ASSOC_REQ_USE_RRM;
7558 }
7559
7560 wdev_lock(dev->ieee80211_ptr);
7561 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7562 wdev_unlock(dev->ieee80211_ptr);
7563 if (err)
7564 kzfree(connkeys);
7565 return err;
7566 }
7567
7568 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7569 {
7570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7571 struct net_device *dev = info->user_ptr[1];
7572 u16 reason;
7573 int ret;
7574
7575 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7576 reason = WLAN_REASON_DEAUTH_LEAVING;
7577 else
7578 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7579
7580 if (reason == 0)
7581 return -EINVAL;
7582
7583 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7584 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7585 return -EOPNOTSUPP;
7586
7587 wdev_lock(dev->ieee80211_ptr);
7588 ret = cfg80211_disconnect(rdev, dev, reason, true);
7589 wdev_unlock(dev->ieee80211_ptr);
7590 return ret;
7591 }
7592
7593 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7594 {
7595 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7596 struct net *net;
7597 int err;
7598 u32 pid;
7599
7600 if (!info->attrs[NL80211_ATTR_PID])
7601 return -EINVAL;
7602
7603 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7604
7605 net = get_net_ns_by_pid(pid);
7606 if (IS_ERR(net))
7607 return PTR_ERR(net);
7608
7609 err = 0;
7610
7611 /* check if anything to do */
7612 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7613 err = cfg80211_switch_netns(rdev, net);
7614
7615 put_net(net);
7616 return err;
7617 }
7618
7619 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7620 {
7621 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7622 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7623 struct cfg80211_pmksa *pmksa) = NULL;
7624 struct net_device *dev = info->user_ptr[1];
7625 struct cfg80211_pmksa pmksa;
7626
7627 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7628
7629 if (!info->attrs[NL80211_ATTR_MAC])
7630 return -EINVAL;
7631
7632 if (!info->attrs[NL80211_ATTR_PMKID])
7633 return -EINVAL;
7634
7635 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7636 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7637
7638 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7639 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7640 return -EOPNOTSUPP;
7641
7642 switch (info->genlhdr->cmd) {
7643 case NL80211_CMD_SET_PMKSA:
7644 rdev_ops = rdev->ops->set_pmksa;
7645 break;
7646 case NL80211_CMD_DEL_PMKSA:
7647 rdev_ops = rdev->ops->del_pmksa;
7648 break;
7649 default:
7650 WARN_ON(1);
7651 break;
7652 }
7653
7654 if (!rdev_ops)
7655 return -EOPNOTSUPP;
7656
7657 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7658 }
7659
7660 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7661 {
7662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7663 struct net_device *dev = info->user_ptr[1];
7664
7665 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7666 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7667 return -EOPNOTSUPP;
7668
7669 if (!rdev->ops->flush_pmksa)
7670 return -EOPNOTSUPP;
7671
7672 return rdev_flush_pmksa(rdev, dev);
7673 }
7674
7675 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7676 {
7677 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7678 struct net_device *dev = info->user_ptr[1];
7679 u8 action_code, dialog_token;
7680 u32 peer_capability = 0;
7681 u16 status_code;
7682 u8 *peer;
7683 bool initiator;
7684
7685 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7686 !rdev->ops->tdls_mgmt)
7687 return -EOPNOTSUPP;
7688
7689 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7690 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7691 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7692 !info->attrs[NL80211_ATTR_IE] ||
7693 !info->attrs[NL80211_ATTR_MAC])
7694 return -EINVAL;
7695
7696 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7697 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7698 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7699 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7700 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7701 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7702 peer_capability =
7703 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7704
7705 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7706 dialog_token, status_code, peer_capability,
7707 initiator,
7708 nla_data(info->attrs[NL80211_ATTR_IE]),
7709 nla_len(info->attrs[NL80211_ATTR_IE]));
7710 }
7711
7712 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7713 {
7714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7715 struct net_device *dev = info->user_ptr[1];
7716 enum nl80211_tdls_operation operation;
7717 u8 *peer;
7718
7719 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7720 !rdev->ops->tdls_oper)
7721 return -EOPNOTSUPP;
7722
7723 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7724 !info->attrs[NL80211_ATTR_MAC])
7725 return -EINVAL;
7726
7727 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7728 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7729
7730 return rdev_tdls_oper(rdev, dev, peer, operation);
7731 }
7732
7733 static int nl80211_remain_on_channel(struct sk_buff *skb,
7734 struct genl_info *info)
7735 {
7736 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7737 struct wireless_dev *wdev = info->user_ptr[1];
7738 struct cfg80211_chan_def chandef;
7739 struct sk_buff *msg;
7740 void *hdr;
7741 u64 cookie;
7742 u32 duration;
7743 int err;
7744
7745 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7746 !info->attrs[NL80211_ATTR_DURATION])
7747 return -EINVAL;
7748
7749 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7750
7751 if (!rdev->ops->remain_on_channel ||
7752 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7753 return -EOPNOTSUPP;
7754
7755 /*
7756 * We should be on that channel for at least a minimum amount of
7757 * time (10ms) but no longer than the driver supports.
7758 */
7759 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7760 duration > rdev->wiphy.max_remain_on_channel_duration)
7761 return -EINVAL;
7762
7763 err = nl80211_parse_chandef(rdev, info, &chandef);
7764 if (err)
7765 return err;
7766
7767 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7768 if (!msg)
7769 return -ENOMEM;
7770
7771 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7772 NL80211_CMD_REMAIN_ON_CHANNEL);
7773 if (!hdr) {
7774 err = -ENOBUFS;
7775 goto free_msg;
7776 }
7777
7778 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7779 duration, &cookie);
7780
7781 if (err)
7782 goto free_msg;
7783
7784 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7785 goto nla_put_failure;
7786
7787 genlmsg_end(msg, hdr);
7788
7789 return genlmsg_reply(msg, info);
7790
7791 nla_put_failure:
7792 err = -ENOBUFS;
7793 free_msg:
7794 nlmsg_free(msg);
7795 return err;
7796 }
7797
7798 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7799 struct genl_info *info)
7800 {
7801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7802 struct wireless_dev *wdev = info->user_ptr[1];
7803 u64 cookie;
7804
7805 if (!info->attrs[NL80211_ATTR_COOKIE])
7806 return -EINVAL;
7807
7808 if (!rdev->ops->cancel_remain_on_channel)
7809 return -EOPNOTSUPP;
7810
7811 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7812
7813 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7814 }
7815
7816 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7817 u8 *rates, u8 rates_len)
7818 {
7819 u8 i;
7820 u32 mask = 0;
7821
7822 for (i = 0; i < rates_len; i++) {
7823 int rate = (rates[i] & 0x7f) * 5;
7824 int ridx;
7825 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7826 struct ieee80211_rate *srate =
7827 &sband->bitrates[ridx];
7828 if (rate == srate->bitrate) {
7829 mask |= 1 << ridx;
7830 break;
7831 }
7832 }
7833 if (ridx == sband->n_bitrates)
7834 return 0; /* rate not found */
7835 }
7836
7837 return mask;
7838 }
7839
7840 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7841 u8 *rates, u8 rates_len,
7842 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7843 {
7844 u8 i;
7845
7846 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7847
7848 for (i = 0; i < rates_len; i++) {
7849 int ridx, rbit;
7850
7851 ridx = rates[i] / 8;
7852 rbit = BIT(rates[i] % 8);
7853
7854 /* check validity */
7855 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7856 return false;
7857
7858 /* check availability */
7859 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7860 mcs[ridx] |= rbit;
7861 else
7862 return false;
7863 }
7864
7865 return true;
7866 }
7867
7868 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7869 {
7870 u16 mcs_mask = 0;
7871
7872 switch (vht_mcs_map) {
7873 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7874 break;
7875 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7876 mcs_mask = 0x00FF;
7877 break;
7878 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7879 mcs_mask = 0x01FF;
7880 break;
7881 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7882 mcs_mask = 0x03FF;
7883 break;
7884 default:
7885 break;
7886 }
7887
7888 return mcs_mask;
7889 }
7890
7891 static void vht_build_mcs_mask(u16 vht_mcs_map,
7892 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7893 {
7894 u8 nss;
7895
7896 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7897 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7898 vht_mcs_map >>= 2;
7899 }
7900 }
7901
7902 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7903 struct nl80211_txrate_vht *txrate,
7904 u16 mcs[NL80211_VHT_NSS_MAX])
7905 {
7906 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7907 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7908 u8 i;
7909
7910 if (!sband->vht_cap.vht_supported)
7911 return false;
7912
7913 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7914
7915 /* Build vht_mcs_mask from VHT capabilities */
7916 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7917
7918 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7919 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7920 mcs[i] = txrate->mcs[i];
7921 else
7922 return false;
7923 }
7924
7925 return true;
7926 }
7927
7928 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7929 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7930 .len = NL80211_MAX_SUPP_RATES },
7931 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7932 .len = NL80211_MAX_SUPP_HT_RATES },
7933 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7934 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7935 };
7936
7937 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7938 struct genl_info *info)
7939 {
7940 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7942 struct cfg80211_bitrate_mask mask;
7943 int rem, i;
7944 struct net_device *dev = info->user_ptr[1];
7945 struct nlattr *tx_rates;
7946 struct ieee80211_supported_band *sband;
7947 u16 vht_tx_mcs_map;
7948
7949 if (!rdev->ops->set_bitrate_mask)
7950 return -EOPNOTSUPP;
7951
7952 memset(&mask, 0, sizeof(mask));
7953 /* Default to all rates enabled */
7954 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7955 sband = rdev->wiphy.bands[i];
7956
7957 if (!sband)
7958 continue;
7959
7960 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7961 memcpy(mask.control[i].ht_mcs,
7962 sband->ht_cap.mcs.rx_mask,
7963 sizeof(mask.control[i].ht_mcs));
7964
7965 if (!sband->vht_cap.vht_supported)
7966 continue;
7967
7968 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7969 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7970 }
7971
7972 /* if no rates are given set it back to the defaults */
7973 if (!info->attrs[NL80211_ATTR_TX_RATES])
7974 goto out;
7975
7976 /*
7977 * The nested attribute uses enum nl80211_band as the index. This maps
7978 * directly to the enum ieee80211_band values used in cfg80211.
7979 */
7980 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7981 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7982 enum ieee80211_band band = nla_type(tx_rates);
7983 int err;
7984
7985 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7986 return -EINVAL;
7987 sband = rdev->wiphy.bands[band];
7988 if (sband == NULL)
7989 return -EINVAL;
7990 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7991 nla_len(tx_rates), nl80211_txattr_policy);
7992 if (err)
7993 return err;
7994 if (tb[NL80211_TXRATE_LEGACY]) {
7995 mask.control[band].legacy = rateset_to_mask(
7996 sband,
7997 nla_data(tb[NL80211_TXRATE_LEGACY]),
7998 nla_len(tb[NL80211_TXRATE_LEGACY]));
7999 if ((mask.control[band].legacy == 0) &&
8000 nla_len(tb[NL80211_TXRATE_LEGACY]))
8001 return -EINVAL;
8002 }
8003 if (tb[NL80211_TXRATE_HT]) {
8004 if (!ht_rateset_to_mask(
8005 sband,
8006 nla_data(tb[NL80211_TXRATE_HT]),
8007 nla_len(tb[NL80211_TXRATE_HT]),
8008 mask.control[band].ht_mcs))
8009 return -EINVAL;
8010 }
8011 if (tb[NL80211_TXRATE_VHT]) {
8012 if (!vht_set_mcs_mask(
8013 sband,
8014 nla_data(tb[NL80211_TXRATE_VHT]),
8015 mask.control[band].vht_mcs))
8016 return -EINVAL;
8017 }
8018 if (tb[NL80211_TXRATE_GI]) {
8019 mask.control[band].gi =
8020 nla_get_u8(tb[NL80211_TXRATE_GI]);
8021 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8022 return -EINVAL;
8023 }
8024
8025 if (mask.control[band].legacy == 0) {
8026 /* don't allow empty legacy rates if HT or VHT
8027 * are not even supported.
8028 */
8029 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8030 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8031 return -EINVAL;
8032
8033 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8034 if (mask.control[band].ht_mcs[i])
8035 goto out;
8036
8037 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8038 if (mask.control[band].vht_mcs[i])
8039 goto out;
8040
8041 /* legacy and mcs rates may not be both empty */
8042 return -EINVAL;
8043 }
8044 }
8045
8046 out:
8047 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8048 }
8049
8050 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8051 {
8052 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8053 struct wireless_dev *wdev = info->user_ptr[1];
8054 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8055
8056 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8057 return -EINVAL;
8058
8059 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8060 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8061
8062 switch (wdev->iftype) {
8063 case NL80211_IFTYPE_STATION:
8064 case NL80211_IFTYPE_ADHOC:
8065 case NL80211_IFTYPE_P2P_CLIENT:
8066 case NL80211_IFTYPE_AP:
8067 case NL80211_IFTYPE_AP_VLAN:
8068 case NL80211_IFTYPE_MESH_POINT:
8069 case NL80211_IFTYPE_P2P_GO:
8070 case NL80211_IFTYPE_P2P_DEVICE:
8071 break;
8072 default:
8073 return -EOPNOTSUPP;
8074 }
8075
8076 /* not much point in registering if we can't reply */
8077 if (!rdev->ops->mgmt_tx)
8078 return -EOPNOTSUPP;
8079
8080 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8081 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8082 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8083 }
8084
8085 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8086 {
8087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8088 struct wireless_dev *wdev = info->user_ptr[1];
8089 struct cfg80211_chan_def chandef;
8090 int err;
8091 void *hdr = NULL;
8092 u64 cookie;
8093 struct sk_buff *msg = NULL;
8094 struct cfg80211_mgmt_tx_params params = {
8095 .dont_wait_for_ack =
8096 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8097 };
8098
8099 if (!info->attrs[NL80211_ATTR_FRAME])
8100 return -EINVAL;
8101
8102 if (!rdev->ops->mgmt_tx)
8103 return -EOPNOTSUPP;
8104
8105 switch (wdev->iftype) {
8106 case NL80211_IFTYPE_P2P_DEVICE:
8107 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8108 return -EINVAL;
8109 case NL80211_IFTYPE_STATION:
8110 case NL80211_IFTYPE_ADHOC:
8111 case NL80211_IFTYPE_P2P_CLIENT:
8112 case NL80211_IFTYPE_AP:
8113 case NL80211_IFTYPE_AP_VLAN:
8114 case NL80211_IFTYPE_MESH_POINT:
8115 case NL80211_IFTYPE_P2P_GO:
8116 break;
8117 default:
8118 return -EOPNOTSUPP;
8119 }
8120
8121 if (info->attrs[NL80211_ATTR_DURATION]) {
8122 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8123 return -EINVAL;
8124 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8125
8126 /*
8127 * We should wait on the channel for at least a minimum amount
8128 * of time (10ms) but no longer than the driver supports.
8129 */
8130 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8131 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8132 return -EINVAL;
8133
8134 }
8135
8136 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8137
8138 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8139 return -EINVAL;
8140
8141 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8142
8143 /* get the channel if any has been specified, otherwise pass NULL to
8144 * the driver. The latter will use the current one
8145 */
8146 chandef.chan = NULL;
8147 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8148 err = nl80211_parse_chandef(rdev, info, &chandef);
8149 if (err)
8150 return err;
8151 }
8152
8153 if (!chandef.chan && params.offchan)
8154 return -EINVAL;
8155
8156 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8157 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8158
8159 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8160 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8161 int i;
8162
8163 if (len % sizeof(u16))
8164 return -EINVAL;
8165
8166 params.n_csa_offsets = len / sizeof(u16);
8167 params.csa_offsets =
8168 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8169
8170 /* check that all the offsets fit the frame */
8171 for (i = 0; i < params.n_csa_offsets; i++) {
8172 if (params.csa_offsets[i] >= params.len)
8173 return -EINVAL;
8174 }
8175 }
8176
8177 if (!params.dont_wait_for_ack) {
8178 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8179 if (!msg)
8180 return -ENOMEM;
8181
8182 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8183 NL80211_CMD_FRAME);
8184 if (!hdr) {
8185 err = -ENOBUFS;
8186 goto free_msg;
8187 }
8188 }
8189
8190 params.chan = chandef.chan;
8191 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8192 if (err)
8193 goto free_msg;
8194
8195 if (msg) {
8196 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8197 goto nla_put_failure;
8198
8199 genlmsg_end(msg, hdr);
8200 return genlmsg_reply(msg, info);
8201 }
8202
8203 return 0;
8204
8205 nla_put_failure:
8206 err = -ENOBUFS;
8207 free_msg:
8208 nlmsg_free(msg);
8209 return err;
8210 }
8211
8212 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8213 {
8214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8215 struct wireless_dev *wdev = info->user_ptr[1];
8216 u64 cookie;
8217
8218 if (!info->attrs[NL80211_ATTR_COOKIE])
8219 return -EINVAL;
8220
8221 if (!rdev->ops->mgmt_tx_cancel_wait)
8222 return -EOPNOTSUPP;
8223
8224 switch (wdev->iftype) {
8225 case NL80211_IFTYPE_STATION:
8226 case NL80211_IFTYPE_ADHOC:
8227 case NL80211_IFTYPE_P2P_CLIENT:
8228 case NL80211_IFTYPE_AP:
8229 case NL80211_IFTYPE_AP_VLAN:
8230 case NL80211_IFTYPE_P2P_GO:
8231 case NL80211_IFTYPE_P2P_DEVICE:
8232 break;
8233 default:
8234 return -EOPNOTSUPP;
8235 }
8236
8237 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8238
8239 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8240 }
8241
8242 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8243 {
8244 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8245 struct wireless_dev *wdev;
8246 struct net_device *dev = info->user_ptr[1];
8247 u8 ps_state;
8248 bool state;
8249 int err;
8250
8251 if (!info->attrs[NL80211_ATTR_PS_STATE])
8252 return -EINVAL;
8253
8254 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8255
8256 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8257 return -EINVAL;
8258
8259 wdev = dev->ieee80211_ptr;
8260
8261 if (!rdev->ops->set_power_mgmt)
8262 return -EOPNOTSUPP;
8263
8264 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8265
8266 if (state == wdev->ps)
8267 return 0;
8268
8269 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8270 if (!err)
8271 wdev->ps = state;
8272 return err;
8273 }
8274
8275 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8276 {
8277 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8278 enum nl80211_ps_state ps_state;
8279 struct wireless_dev *wdev;
8280 struct net_device *dev = info->user_ptr[1];
8281 struct sk_buff *msg;
8282 void *hdr;
8283 int err;
8284
8285 wdev = dev->ieee80211_ptr;
8286
8287 if (!rdev->ops->set_power_mgmt)
8288 return -EOPNOTSUPP;
8289
8290 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8291 if (!msg)
8292 return -ENOMEM;
8293
8294 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8295 NL80211_CMD_GET_POWER_SAVE);
8296 if (!hdr) {
8297 err = -ENOBUFS;
8298 goto free_msg;
8299 }
8300
8301 if (wdev->ps)
8302 ps_state = NL80211_PS_ENABLED;
8303 else
8304 ps_state = NL80211_PS_DISABLED;
8305
8306 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8307 goto nla_put_failure;
8308
8309 genlmsg_end(msg, hdr);
8310 return genlmsg_reply(msg, info);
8311
8312 nla_put_failure:
8313 err = -ENOBUFS;
8314 free_msg:
8315 nlmsg_free(msg);
8316 return err;
8317 }
8318
8319 static const struct nla_policy
8320 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8321 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8322 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8323 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8324 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8325 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8326 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8327 };
8328
8329 static int nl80211_set_cqm_txe(struct genl_info *info,
8330 u32 rate, u32 pkts, u32 intvl)
8331 {
8332 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8333 struct net_device *dev = info->user_ptr[1];
8334 struct wireless_dev *wdev = dev->ieee80211_ptr;
8335
8336 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8337 return -EINVAL;
8338
8339 if (!rdev->ops->set_cqm_txe_config)
8340 return -EOPNOTSUPP;
8341
8342 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8343 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8344 return -EOPNOTSUPP;
8345
8346 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8347 }
8348
8349 static int nl80211_set_cqm_rssi(struct genl_info *info,
8350 s32 threshold, u32 hysteresis)
8351 {
8352 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8353 struct net_device *dev = info->user_ptr[1];
8354 struct wireless_dev *wdev = dev->ieee80211_ptr;
8355
8356 if (threshold > 0)
8357 return -EINVAL;
8358
8359 /* disabling - hysteresis should also be zero then */
8360 if (threshold == 0)
8361 hysteresis = 0;
8362
8363 if (!rdev->ops->set_cqm_rssi_config)
8364 return -EOPNOTSUPP;
8365
8366 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8367 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8368 return -EOPNOTSUPP;
8369
8370 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8371 }
8372
8373 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8374 {
8375 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8376 struct nlattr *cqm;
8377 int err;
8378
8379 cqm = info->attrs[NL80211_ATTR_CQM];
8380 if (!cqm)
8381 return -EINVAL;
8382
8383 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8384 nl80211_attr_cqm_policy);
8385 if (err)
8386 return err;
8387
8388 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8389 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8390 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8391 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8392
8393 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8394 }
8395
8396 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8397 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8398 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8399 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8400 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8401 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8402
8403 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8404 }
8405
8406 return -EINVAL;
8407 }
8408
8409 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8410 {
8411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8412 struct net_device *dev = info->user_ptr[1];
8413 struct ocb_setup setup = {};
8414 int err;
8415
8416 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8417 if (err)
8418 return err;
8419
8420 return cfg80211_join_ocb(rdev, dev, &setup);
8421 }
8422
8423 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8424 {
8425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8426 struct net_device *dev = info->user_ptr[1];
8427
8428 return cfg80211_leave_ocb(rdev, dev);
8429 }
8430
8431 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8432 {
8433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8434 struct net_device *dev = info->user_ptr[1];
8435 struct mesh_config cfg;
8436 struct mesh_setup setup;
8437 int err;
8438
8439 /* start with default */
8440 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8441 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8442
8443 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8444 /* and parse parameters if given */
8445 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8446 if (err)
8447 return err;
8448 }
8449
8450 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8451 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8452 return -EINVAL;
8453
8454 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8455 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8456
8457 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8458 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8459 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8460 return -EINVAL;
8461
8462 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8463 setup.beacon_interval =
8464 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8465 if (setup.beacon_interval < 10 ||
8466 setup.beacon_interval > 10000)
8467 return -EINVAL;
8468 }
8469
8470 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8471 setup.dtim_period =
8472 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8473 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8474 return -EINVAL;
8475 }
8476
8477 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8478 /* parse additional setup parameters if given */
8479 err = nl80211_parse_mesh_setup(info, &setup);
8480 if (err)
8481 return err;
8482 }
8483
8484 if (setup.user_mpm)
8485 cfg.auto_open_plinks = false;
8486
8487 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8488 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8489 if (err)
8490 return err;
8491 } else {
8492 /* cfg80211_join_mesh() will sort it out */
8493 setup.chandef.chan = NULL;
8494 }
8495
8496 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8497 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8498 int n_rates =
8499 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8500 struct ieee80211_supported_band *sband;
8501
8502 if (!setup.chandef.chan)
8503 return -EINVAL;
8504
8505 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8506
8507 err = ieee80211_get_ratemask(sband, rates, n_rates,
8508 &setup.basic_rates);
8509 if (err)
8510 return err;
8511 }
8512
8513 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8514 }
8515
8516 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8517 {
8518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8519 struct net_device *dev = info->user_ptr[1];
8520
8521 return cfg80211_leave_mesh(rdev, dev);
8522 }
8523
8524 #ifdef CONFIG_PM
8525 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8526 struct cfg80211_registered_device *rdev)
8527 {
8528 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8529 struct nlattr *nl_pats, *nl_pat;
8530 int i, pat_len;
8531
8532 if (!wowlan->n_patterns)
8533 return 0;
8534
8535 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8536 if (!nl_pats)
8537 return -ENOBUFS;
8538
8539 for (i = 0; i < wowlan->n_patterns; i++) {
8540 nl_pat = nla_nest_start(msg, i + 1);
8541 if (!nl_pat)
8542 return -ENOBUFS;
8543 pat_len = wowlan->patterns[i].pattern_len;
8544 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8545 wowlan->patterns[i].mask) ||
8546 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8547 wowlan->patterns[i].pattern) ||
8548 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8549 wowlan->patterns[i].pkt_offset))
8550 return -ENOBUFS;
8551 nla_nest_end(msg, nl_pat);
8552 }
8553 nla_nest_end(msg, nl_pats);
8554
8555 return 0;
8556 }
8557
8558 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8559 struct cfg80211_wowlan_tcp *tcp)
8560 {
8561 struct nlattr *nl_tcp;
8562
8563 if (!tcp)
8564 return 0;
8565
8566 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8567 if (!nl_tcp)
8568 return -ENOBUFS;
8569
8570 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8571 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8572 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8573 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8574 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8575 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8576 tcp->payload_len, tcp->payload) ||
8577 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8578 tcp->data_interval) ||
8579 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8580 tcp->wake_len, tcp->wake_data) ||
8581 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8582 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8583 return -ENOBUFS;
8584
8585 if (tcp->payload_seq.len &&
8586 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8587 sizeof(tcp->payload_seq), &tcp->payload_seq))
8588 return -ENOBUFS;
8589
8590 if (tcp->payload_tok.len &&
8591 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8592 sizeof(tcp->payload_tok) + tcp->tokens_size,
8593 &tcp->payload_tok))
8594 return -ENOBUFS;
8595
8596 nla_nest_end(msg, nl_tcp);
8597
8598 return 0;
8599 }
8600
8601 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8602 {
8603 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8604 struct sk_buff *msg;
8605 void *hdr;
8606 u32 size = NLMSG_DEFAULT_SIZE;
8607
8608 if (!rdev->wiphy.wowlan)
8609 return -EOPNOTSUPP;
8610
8611 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8612 /* adjust size to have room for all the data */
8613 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8614 rdev->wiphy.wowlan_config->tcp->payload_len +
8615 rdev->wiphy.wowlan_config->tcp->wake_len +
8616 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8617 }
8618
8619 msg = nlmsg_new(size, GFP_KERNEL);
8620 if (!msg)
8621 return -ENOMEM;
8622
8623 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8624 NL80211_CMD_GET_WOWLAN);
8625 if (!hdr)
8626 goto nla_put_failure;
8627
8628 if (rdev->wiphy.wowlan_config) {
8629 struct nlattr *nl_wowlan;
8630
8631 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8632 if (!nl_wowlan)
8633 goto nla_put_failure;
8634
8635 if ((rdev->wiphy.wowlan_config->any &&
8636 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8637 (rdev->wiphy.wowlan_config->disconnect &&
8638 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8639 (rdev->wiphy.wowlan_config->magic_pkt &&
8640 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8641 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8642 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8643 (rdev->wiphy.wowlan_config->eap_identity_req &&
8644 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8645 (rdev->wiphy.wowlan_config->four_way_handshake &&
8646 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8647 (rdev->wiphy.wowlan_config->rfkill_release &&
8648 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8649 goto nla_put_failure;
8650
8651 if (nl80211_send_wowlan_patterns(msg, rdev))
8652 goto nla_put_failure;
8653
8654 if (nl80211_send_wowlan_tcp(msg,
8655 rdev->wiphy.wowlan_config->tcp))
8656 goto nla_put_failure;
8657
8658 nla_nest_end(msg, nl_wowlan);
8659 }
8660
8661 genlmsg_end(msg, hdr);
8662 return genlmsg_reply(msg, info);
8663
8664 nla_put_failure:
8665 nlmsg_free(msg);
8666 return -ENOBUFS;
8667 }
8668
8669 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8670 struct nlattr *attr,
8671 struct cfg80211_wowlan *trig)
8672 {
8673 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8674 struct cfg80211_wowlan_tcp *cfg;
8675 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8676 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8677 u32 size;
8678 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8679 int err, port;
8680
8681 if (!rdev->wiphy.wowlan->tcp)
8682 return -EINVAL;
8683
8684 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8685 nla_data(attr), nla_len(attr),
8686 nl80211_wowlan_tcp_policy);
8687 if (err)
8688 return err;
8689
8690 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8691 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8692 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8693 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8694 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8695 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8696 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8697 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8698 return -EINVAL;
8699
8700 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8701 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8702 return -EINVAL;
8703
8704 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8705 rdev->wiphy.wowlan->tcp->data_interval_max ||
8706 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8707 return -EINVAL;
8708
8709 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8710 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8711 return -EINVAL;
8712
8713 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8714 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8715 return -EINVAL;
8716
8717 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8718 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8719
8720 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8721 tokens_size = tokln - sizeof(*tok);
8722
8723 if (!tok->len || tokens_size % tok->len)
8724 return -EINVAL;
8725 if (!rdev->wiphy.wowlan->tcp->tok)
8726 return -EINVAL;
8727 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8728 return -EINVAL;
8729 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8730 return -EINVAL;
8731 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8732 return -EINVAL;
8733 if (tok->offset + tok->len > data_size)
8734 return -EINVAL;
8735 }
8736
8737 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8738 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8739 if (!rdev->wiphy.wowlan->tcp->seq)
8740 return -EINVAL;
8741 if (seq->len == 0 || seq->len > 4)
8742 return -EINVAL;
8743 if (seq->len + seq->offset > data_size)
8744 return -EINVAL;
8745 }
8746
8747 size = sizeof(*cfg);
8748 size += data_size;
8749 size += wake_size + wake_mask_size;
8750 size += tokens_size;
8751
8752 cfg = kzalloc(size, GFP_KERNEL);
8753 if (!cfg)
8754 return -ENOMEM;
8755 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8756 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8757 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8758 ETH_ALEN);
8759 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8760 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8761 else
8762 port = 0;
8763 #ifdef CONFIG_INET
8764 /* allocate a socket and port for it and use it */
8765 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8766 IPPROTO_TCP, &cfg->sock, 1);
8767 if (err) {
8768 kfree(cfg);
8769 return err;
8770 }
8771 if (inet_csk_get_port(cfg->sock->sk, port)) {
8772 sock_release(cfg->sock);
8773 kfree(cfg);
8774 return -EADDRINUSE;
8775 }
8776 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8777 #else
8778 if (!port) {
8779 kfree(cfg);
8780 return -EINVAL;
8781 }
8782 cfg->src_port = port;
8783 #endif
8784
8785 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8786 cfg->payload_len = data_size;
8787 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8788 memcpy((void *)cfg->payload,
8789 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8790 data_size);
8791 if (seq)
8792 cfg->payload_seq = *seq;
8793 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8794 cfg->wake_len = wake_size;
8795 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8796 memcpy((void *)cfg->wake_data,
8797 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8798 wake_size);
8799 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8800 data_size + wake_size;
8801 memcpy((void *)cfg->wake_mask,
8802 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8803 wake_mask_size);
8804 if (tok) {
8805 cfg->tokens_size = tokens_size;
8806 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8807 }
8808
8809 trig->tcp = cfg;
8810
8811 return 0;
8812 }
8813
8814 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8815 const struct wiphy_wowlan_support *wowlan,
8816 struct nlattr *attr,
8817 struct cfg80211_wowlan *trig)
8818 {
8819 struct nlattr **tb;
8820 int err;
8821
8822 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8823 if (!tb)
8824 return -ENOMEM;
8825
8826 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8827 err = -EOPNOTSUPP;
8828 goto out;
8829 }
8830
8831 err = nla_parse(tb, NL80211_ATTR_MAX,
8832 nla_data(attr), nla_len(attr),
8833 nl80211_policy);
8834 if (err)
8835 goto out;
8836
8837 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8838 err = PTR_ERR_OR_ZERO(trig->nd_config);
8839 if (err)
8840 trig->nd_config = NULL;
8841
8842 out:
8843 kfree(tb);
8844 return err;
8845 }
8846
8847 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8848 {
8849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8850 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8851 struct cfg80211_wowlan new_triggers = {};
8852 struct cfg80211_wowlan *ntrig;
8853 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8854 int err, i;
8855 bool prev_enabled = rdev->wiphy.wowlan_config;
8856
8857 if (!wowlan)
8858 return -EOPNOTSUPP;
8859
8860 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8861 cfg80211_rdev_free_wowlan(rdev);
8862 rdev->wiphy.wowlan_config = NULL;
8863 goto set_wakeup;
8864 }
8865
8866 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8867 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8868 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8869 nl80211_wowlan_policy);
8870 if (err)
8871 return err;
8872
8873 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8874 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8875 return -EINVAL;
8876 new_triggers.any = true;
8877 }
8878
8879 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8880 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8881 return -EINVAL;
8882 new_triggers.disconnect = true;
8883 }
8884
8885 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8886 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8887 return -EINVAL;
8888 new_triggers.magic_pkt = true;
8889 }
8890
8891 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8892 return -EINVAL;
8893
8894 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8895 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8896 return -EINVAL;
8897 new_triggers.gtk_rekey_failure = true;
8898 }
8899
8900 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8901 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8902 return -EINVAL;
8903 new_triggers.eap_identity_req = true;
8904 }
8905
8906 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8907 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8908 return -EINVAL;
8909 new_triggers.four_way_handshake = true;
8910 }
8911
8912 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8913 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8914 return -EINVAL;
8915 new_triggers.rfkill_release = true;
8916 }
8917
8918 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8919 struct nlattr *pat;
8920 int n_patterns = 0;
8921 int rem, pat_len, mask_len, pkt_offset;
8922 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8923
8924 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8925 rem)
8926 n_patterns++;
8927 if (n_patterns > wowlan->n_patterns)
8928 return -EINVAL;
8929
8930 new_triggers.patterns = kcalloc(n_patterns,
8931 sizeof(new_triggers.patterns[0]),
8932 GFP_KERNEL);
8933 if (!new_triggers.patterns)
8934 return -ENOMEM;
8935
8936 new_triggers.n_patterns = n_patterns;
8937 i = 0;
8938
8939 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8940 rem) {
8941 u8 *mask_pat;
8942
8943 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8944 nla_len(pat), NULL);
8945 err = -EINVAL;
8946 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8947 !pat_tb[NL80211_PKTPAT_PATTERN])
8948 goto error;
8949 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8950 mask_len = DIV_ROUND_UP(pat_len, 8);
8951 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8952 goto error;
8953 if (pat_len > wowlan->pattern_max_len ||
8954 pat_len < wowlan->pattern_min_len)
8955 goto error;
8956
8957 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8958 pkt_offset = 0;
8959 else
8960 pkt_offset = nla_get_u32(
8961 pat_tb[NL80211_PKTPAT_OFFSET]);
8962 if (pkt_offset > wowlan->max_pkt_offset)
8963 goto error;
8964 new_triggers.patterns[i].pkt_offset = pkt_offset;
8965
8966 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8967 if (!mask_pat) {
8968 err = -ENOMEM;
8969 goto error;
8970 }
8971 new_triggers.patterns[i].mask = mask_pat;
8972 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8973 mask_len);
8974 mask_pat += mask_len;
8975 new_triggers.patterns[i].pattern = mask_pat;
8976 new_triggers.patterns[i].pattern_len = pat_len;
8977 memcpy(mask_pat,
8978 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8979 pat_len);
8980 i++;
8981 }
8982 }
8983
8984 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8985 err = nl80211_parse_wowlan_tcp(
8986 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8987 &new_triggers);
8988 if (err)
8989 goto error;
8990 }
8991
8992 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
8993 err = nl80211_parse_wowlan_nd(
8994 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
8995 &new_triggers);
8996 if (err)
8997 goto error;
8998 }
8999
9000 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9001 if (!ntrig) {
9002 err = -ENOMEM;
9003 goto error;
9004 }
9005 cfg80211_rdev_free_wowlan(rdev);
9006 rdev->wiphy.wowlan_config = ntrig;
9007
9008 set_wakeup:
9009 if (rdev->ops->set_wakeup &&
9010 prev_enabled != !!rdev->wiphy.wowlan_config)
9011 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9012
9013 return 0;
9014 error:
9015 for (i = 0; i < new_triggers.n_patterns; i++)
9016 kfree(new_triggers.patterns[i].mask);
9017 kfree(new_triggers.patterns);
9018 if (new_triggers.tcp && new_triggers.tcp->sock)
9019 sock_release(new_triggers.tcp->sock);
9020 kfree(new_triggers.tcp);
9021 return err;
9022 }
9023 #endif
9024
9025 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9026 struct cfg80211_registered_device *rdev)
9027 {
9028 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9029 int i, j, pat_len;
9030 struct cfg80211_coalesce_rules *rule;
9031
9032 if (!rdev->coalesce->n_rules)
9033 return 0;
9034
9035 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9036 if (!nl_rules)
9037 return -ENOBUFS;
9038
9039 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9040 nl_rule = nla_nest_start(msg, i + 1);
9041 if (!nl_rule)
9042 return -ENOBUFS;
9043
9044 rule = &rdev->coalesce->rules[i];
9045 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9046 rule->delay))
9047 return -ENOBUFS;
9048
9049 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9050 rule->condition))
9051 return -ENOBUFS;
9052
9053 nl_pats = nla_nest_start(msg,
9054 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9055 if (!nl_pats)
9056 return -ENOBUFS;
9057
9058 for (j = 0; j < rule->n_patterns; j++) {
9059 nl_pat = nla_nest_start(msg, j + 1);
9060 if (!nl_pat)
9061 return -ENOBUFS;
9062 pat_len = rule->patterns[j].pattern_len;
9063 if (nla_put(msg, NL80211_PKTPAT_MASK,
9064 DIV_ROUND_UP(pat_len, 8),
9065 rule->patterns[j].mask) ||
9066 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9067 rule->patterns[j].pattern) ||
9068 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9069 rule->patterns[j].pkt_offset))
9070 return -ENOBUFS;
9071 nla_nest_end(msg, nl_pat);
9072 }
9073 nla_nest_end(msg, nl_pats);
9074 nla_nest_end(msg, nl_rule);
9075 }
9076 nla_nest_end(msg, nl_rules);
9077
9078 return 0;
9079 }
9080
9081 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9082 {
9083 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9084 struct sk_buff *msg;
9085 void *hdr;
9086
9087 if (!rdev->wiphy.coalesce)
9088 return -EOPNOTSUPP;
9089
9090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9091 if (!msg)
9092 return -ENOMEM;
9093
9094 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9095 NL80211_CMD_GET_COALESCE);
9096 if (!hdr)
9097 goto nla_put_failure;
9098
9099 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9100 goto nla_put_failure;
9101
9102 genlmsg_end(msg, hdr);
9103 return genlmsg_reply(msg, info);
9104
9105 nla_put_failure:
9106 nlmsg_free(msg);
9107 return -ENOBUFS;
9108 }
9109
9110 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9111 {
9112 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9113 int i, j;
9114 struct cfg80211_coalesce_rules *rule;
9115
9116 if (!coalesce)
9117 return;
9118
9119 for (i = 0; i < coalesce->n_rules; i++) {
9120 rule = &coalesce->rules[i];
9121 for (j = 0; j < rule->n_patterns; j++)
9122 kfree(rule->patterns[j].mask);
9123 kfree(rule->patterns);
9124 }
9125 kfree(coalesce->rules);
9126 kfree(coalesce);
9127 rdev->coalesce = NULL;
9128 }
9129
9130 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9131 struct nlattr *rule,
9132 struct cfg80211_coalesce_rules *new_rule)
9133 {
9134 int err, i;
9135 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9136 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9137 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9138 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9139
9140 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9141 nla_len(rule), nl80211_coalesce_policy);
9142 if (err)
9143 return err;
9144
9145 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9146 new_rule->delay =
9147 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9148 if (new_rule->delay > coalesce->max_delay)
9149 return -EINVAL;
9150
9151 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9152 new_rule->condition =
9153 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9154 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9155 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9156 return -EINVAL;
9157
9158 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9159 return -EINVAL;
9160
9161 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9162 rem)
9163 n_patterns++;
9164 if (n_patterns > coalesce->n_patterns)
9165 return -EINVAL;
9166
9167 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9168 GFP_KERNEL);
9169 if (!new_rule->patterns)
9170 return -ENOMEM;
9171
9172 new_rule->n_patterns = n_patterns;
9173 i = 0;
9174
9175 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9176 rem) {
9177 u8 *mask_pat;
9178
9179 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9180 nla_len(pat), NULL);
9181 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9182 !pat_tb[NL80211_PKTPAT_PATTERN])
9183 return -EINVAL;
9184 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9185 mask_len = DIV_ROUND_UP(pat_len, 8);
9186 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9187 return -EINVAL;
9188 if (pat_len > coalesce->pattern_max_len ||
9189 pat_len < coalesce->pattern_min_len)
9190 return -EINVAL;
9191
9192 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9193 pkt_offset = 0;
9194 else
9195 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9196 if (pkt_offset > coalesce->max_pkt_offset)
9197 return -EINVAL;
9198 new_rule->patterns[i].pkt_offset = pkt_offset;
9199
9200 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9201 if (!mask_pat)
9202 return -ENOMEM;
9203
9204 new_rule->patterns[i].mask = mask_pat;
9205 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9206 mask_len);
9207
9208 mask_pat += mask_len;
9209 new_rule->patterns[i].pattern = mask_pat;
9210 new_rule->patterns[i].pattern_len = pat_len;
9211 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9212 pat_len);
9213 i++;
9214 }
9215
9216 return 0;
9217 }
9218
9219 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9220 {
9221 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9222 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9223 struct cfg80211_coalesce new_coalesce = {};
9224 struct cfg80211_coalesce *n_coalesce;
9225 int err, rem_rule, n_rules = 0, i, j;
9226 struct nlattr *rule;
9227 struct cfg80211_coalesce_rules *tmp_rule;
9228
9229 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9230 return -EOPNOTSUPP;
9231
9232 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9233 cfg80211_rdev_free_coalesce(rdev);
9234 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9235 return 0;
9236 }
9237
9238 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9239 rem_rule)
9240 n_rules++;
9241 if (n_rules > coalesce->n_rules)
9242 return -EINVAL;
9243
9244 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9245 GFP_KERNEL);
9246 if (!new_coalesce.rules)
9247 return -ENOMEM;
9248
9249 new_coalesce.n_rules = n_rules;
9250 i = 0;
9251
9252 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9253 rem_rule) {
9254 err = nl80211_parse_coalesce_rule(rdev, rule,
9255 &new_coalesce.rules[i]);
9256 if (err)
9257 goto error;
9258
9259 i++;
9260 }
9261
9262 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9263 if (err)
9264 goto error;
9265
9266 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9267 if (!n_coalesce) {
9268 err = -ENOMEM;
9269 goto error;
9270 }
9271 cfg80211_rdev_free_coalesce(rdev);
9272 rdev->coalesce = n_coalesce;
9273
9274 return 0;
9275 error:
9276 for (i = 0; i < new_coalesce.n_rules; i++) {
9277 tmp_rule = &new_coalesce.rules[i];
9278 for (j = 0; j < tmp_rule->n_patterns; j++)
9279 kfree(tmp_rule->patterns[j].mask);
9280 kfree(tmp_rule->patterns);
9281 }
9282 kfree(new_coalesce.rules);
9283
9284 return err;
9285 }
9286
9287 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9288 {
9289 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9290 struct net_device *dev = info->user_ptr[1];
9291 struct wireless_dev *wdev = dev->ieee80211_ptr;
9292 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9293 struct cfg80211_gtk_rekey_data rekey_data;
9294 int err;
9295
9296 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9297 return -EINVAL;
9298
9299 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9300 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9301 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9302 nl80211_rekey_policy);
9303 if (err)
9304 return err;
9305
9306 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9307 return -ERANGE;
9308 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9309 return -ERANGE;
9310 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9311 return -ERANGE;
9312
9313 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9314 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9315 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9316
9317 wdev_lock(wdev);
9318 if (!wdev->current_bss) {
9319 err = -ENOTCONN;
9320 goto out;
9321 }
9322
9323 if (!rdev->ops->set_rekey_data) {
9324 err = -EOPNOTSUPP;
9325 goto out;
9326 }
9327
9328 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9329 out:
9330 wdev_unlock(wdev);
9331 return err;
9332 }
9333
9334 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9335 struct genl_info *info)
9336 {
9337 struct net_device *dev = info->user_ptr[1];
9338 struct wireless_dev *wdev = dev->ieee80211_ptr;
9339
9340 if (wdev->iftype != NL80211_IFTYPE_AP &&
9341 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9342 return -EINVAL;
9343
9344 if (wdev->ap_unexpected_nlportid)
9345 return -EBUSY;
9346
9347 wdev->ap_unexpected_nlportid = info->snd_portid;
9348 return 0;
9349 }
9350
9351 static int nl80211_probe_client(struct sk_buff *skb,
9352 struct genl_info *info)
9353 {
9354 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9355 struct net_device *dev = info->user_ptr[1];
9356 struct wireless_dev *wdev = dev->ieee80211_ptr;
9357 struct sk_buff *msg;
9358 void *hdr;
9359 const u8 *addr;
9360 u64 cookie;
9361 int err;
9362
9363 if (wdev->iftype != NL80211_IFTYPE_AP &&
9364 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9365 return -EOPNOTSUPP;
9366
9367 if (!info->attrs[NL80211_ATTR_MAC])
9368 return -EINVAL;
9369
9370 if (!rdev->ops->probe_client)
9371 return -EOPNOTSUPP;
9372
9373 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9374 if (!msg)
9375 return -ENOMEM;
9376
9377 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9378 NL80211_CMD_PROBE_CLIENT);
9379 if (!hdr) {
9380 err = -ENOBUFS;
9381 goto free_msg;
9382 }
9383
9384 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9385
9386 err = rdev_probe_client(rdev, dev, addr, &cookie);
9387 if (err)
9388 goto free_msg;
9389
9390 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9391 goto nla_put_failure;
9392
9393 genlmsg_end(msg, hdr);
9394
9395 return genlmsg_reply(msg, info);
9396
9397 nla_put_failure:
9398 err = -ENOBUFS;
9399 free_msg:
9400 nlmsg_free(msg);
9401 return err;
9402 }
9403
9404 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9405 {
9406 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9407 struct cfg80211_beacon_registration *reg, *nreg;
9408 int rv;
9409
9410 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9411 return -EOPNOTSUPP;
9412
9413 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9414 if (!nreg)
9415 return -ENOMEM;
9416
9417 /* First, check if already registered. */
9418 spin_lock_bh(&rdev->beacon_registrations_lock);
9419 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9420 if (reg->nlportid == info->snd_portid) {
9421 rv = -EALREADY;
9422 goto out_err;
9423 }
9424 }
9425 /* Add it to the list */
9426 nreg->nlportid = info->snd_portid;
9427 list_add(&nreg->list, &rdev->beacon_registrations);
9428
9429 spin_unlock_bh(&rdev->beacon_registrations_lock);
9430
9431 return 0;
9432 out_err:
9433 spin_unlock_bh(&rdev->beacon_registrations_lock);
9434 kfree(nreg);
9435 return rv;
9436 }
9437
9438 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9439 {
9440 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9441 struct wireless_dev *wdev = info->user_ptr[1];
9442 int err;
9443
9444 if (!rdev->ops->start_p2p_device)
9445 return -EOPNOTSUPP;
9446
9447 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9448 return -EOPNOTSUPP;
9449
9450 if (wdev->p2p_started)
9451 return 0;
9452
9453 if (rfkill_blocked(rdev->rfkill))
9454 return -ERFKILL;
9455
9456 err = rdev_start_p2p_device(rdev, wdev);
9457 if (err)
9458 return err;
9459
9460 wdev->p2p_started = true;
9461 rdev->opencount++;
9462
9463 return 0;
9464 }
9465
9466 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9467 {
9468 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9469 struct wireless_dev *wdev = info->user_ptr[1];
9470
9471 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9472 return -EOPNOTSUPP;
9473
9474 if (!rdev->ops->stop_p2p_device)
9475 return -EOPNOTSUPP;
9476
9477 cfg80211_stop_p2p_device(rdev, wdev);
9478
9479 return 0;
9480 }
9481
9482 static int nl80211_get_protocol_features(struct sk_buff *skb,
9483 struct genl_info *info)
9484 {
9485 void *hdr;
9486 struct sk_buff *msg;
9487
9488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9489 if (!msg)
9490 return -ENOMEM;
9491
9492 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9493 NL80211_CMD_GET_PROTOCOL_FEATURES);
9494 if (!hdr)
9495 goto nla_put_failure;
9496
9497 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9498 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9499 goto nla_put_failure;
9500
9501 genlmsg_end(msg, hdr);
9502 return genlmsg_reply(msg, info);
9503
9504 nla_put_failure:
9505 kfree_skb(msg);
9506 return -ENOBUFS;
9507 }
9508
9509 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9510 {
9511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9512 struct cfg80211_update_ft_ies_params ft_params;
9513 struct net_device *dev = info->user_ptr[1];
9514
9515 if (!rdev->ops->update_ft_ies)
9516 return -EOPNOTSUPP;
9517
9518 if (!info->attrs[NL80211_ATTR_MDID] ||
9519 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9520 return -EINVAL;
9521
9522 memset(&ft_params, 0, sizeof(ft_params));
9523 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9524 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9525 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9526
9527 return rdev_update_ft_ies(rdev, dev, &ft_params);
9528 }
9529
9530 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9531 struct genl_info *info)
9532 {
9533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9534 struct wireless_dev *wdev = info->user_ptr[1];
9535 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9536 u16 duration;
9537 int ret;
9538
9539 if (!rdev->ops->crit_proto_start)
9540 return -EOPNOTSUPP;
9541
9542 if (WARN_ON(!rdev->ops->crit_proto_stop))
9543 return -EINVAL;
9544
9545 if (rdev->crit_proto_nlportid)
9546 return -EBUSY;
9547
9548 /* determine protocol if provided */
9549 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9550 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9551
9552 if (proto >= NUM_NL80211_CRIT_PROTO)
9553 return -EINVAL;
9554
9555 /* timeout must be provided */
9556 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9557 return -EINVAL;
9558
9559 duration =
9560 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9561
9562 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9563 return -ERANGE;
9564
9565 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9566 if (!ret)
9567 rdev->crit_proto_nlportid = info->snd_portid;
9568
9569 return ret;
9570 }
9571
9572 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9573 struct genl_info *info)
9574 {
9575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9576 struct wireless_dev *wdev = info->user_ptr[1];
9577
9578 if (!rdev->ops->crit_proto_stop)
9579 return -EOPNOTSUPP;
9580
9581 if (rdev->crit_proto_nlportid) {
9582 rdev->crit_proto_nlportid = 0;
9583 rdev_crit_proto_stop(rdev, wdev);
9584 }
9585 return 0;
9586 }
9587
9588 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9589 {
9590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9591 struct wireless_dev *wdev =
9592 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9593 int i, err;
9594 u32 vid, subcmd;
9595
9596 if (!rdev->wiphy.vendor_commands)
9597 return -EOPNOTSUPP;
9598
9599 if (IS_ERR(wdev)) {
9600 err = PTR_ERR(wdev);
9601 if (err != -EINVAL)
9602 return err;
9603 wdev = NULL;
9604 } else if (wdev->wiphy != &rdev->wiphy) {
9605 return -EINVAL;
9606 }
9607
9608 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9609 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9610 return -EINVAL;
9611
9612 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9613 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9614 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9615 const struct wiphy_vendor_command *vcmd;
9616 void *data = NULL;
9617 int len = 0;
9618
9619 vcmd = &rdev->wiphy.vendor_commands[i];
9620
9621 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9622 continue;
9623
9624 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9625 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9626 if (!wdev)
9627 return -EINVAL;
9628 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9629 !wdev->netdev)
9630 return -EINVAL;
9631
9632 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9633 if (wdev->netdev &&
9634 !netif_running(wdev->netdev))
9635 return -ENETDOWN;
9636 if (!wdev->netdev && !wdev->p2p_started)
9637 return -ENETDOWN;
9638 }
9639 } else {
9640 wdev = NULL;
9641 }
9642
9643 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9644 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9645 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9646 }
9647
9648 rdev->cur_cmd_info = info;
9649 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9650 data, len);
9651 rdev->cur_cmd_info = NULL;
9652 return err;
9653 }
9654
9655 return -EOPNOTSUPP;
9656 }
9657
9658 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9659 enum nl80211_commands cmd,
9660 enum nl80211_attrs attr,
9661 int approxlen)
9662 {
9663 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9664
9665 if (WARN_ON(!rdev->cur_cmd_info))
9666 return NULL;
9667
9668 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9669 rdev->cur_cmd_info->snd_portid,
9670 rdev->cur_cmd_info->snd_seq,
9671 cmd, attr, NULL, GFP_KERNEL);
9672 }
9673 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9674
9675 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9676 {
9677 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9678 void *hdr = ((void **)skb->cb)[1];
9679 struct nlattr *data = ((void **)skb->cb)[2];
9680
9681 /* clear CB data for netlink core to own from now on */
9682 memset(skb->cb, 0, sizeof(skb->cb));
9683
9684 if (WARN_ON(!rdev->cur_cmd_info)) {
9685 kfree_skb(skb);
9686 return -EINVAL;
9687 }
9688
9689 nla_nest_end(skb, data);
9690 genlmsg_end(skb, hdr);
9691 return genlmsg_reply(skb, rdev->cur_cmd_info);
9692 }
9693 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9694
9695
9696 static int nl80211_set_qos_map(struct sk_buff *skb,
9697 struct genl_info *info)
9698 {
9699 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9700 struct cfg80211_qos_map *qos_map = NULL;
9701 struct net_device *dev = info->user_ptr[1];
9702 u8 *pos, len, num_des, des_len, des;
9703 int ret;
9704
9705 if (!rdev->ops->set_qos_map)
9706 return -EOPNOTSUPP;
9707
9708 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9709 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9710 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9711
9712 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9713 len > IEEE80211_QOS_MAP_LEN_MAX)
9714 return -EINVAL;
9715
9716 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9717 if (!qos_map)
9718 return -ENOMEM;
9719
9720 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9721 if (num_des) {
9722 des_len = num_des *
9723 sizeof(struct cfg80211_dscp_exception);
9724 memcpy(qos_map->dscp_exception, pos, des_len);
9725 qos_map->num_des = num_des;
9726 for (des = 0; des < num_des; des++) {
9727 if (qos_map->dscp_exception[des].up > 7) {
9728 kfree(qos_map);
9729 return -EINVAL;
9730 }
9731 }
9732 pos += des_len;
9733 }
9734 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9735 }
9736
9737 wdev_lock(dev->ieee80211_ptr);
9738 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9739 if (!ret)
9740 ret = rdev_set_qos_map(rdev, dev, qos_map);
9741 wdev_unlock(dev->ieee80211_ptr);
9742
9743 kfree(qos_map);
9744 return ret;
9745 }
9746
9747 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9748 {
9749 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9750 struct net_device *dev = info->user_ptr[1];
9751 struct wireless_dev *wdev = dev->ieee80211_ptr;
9752 const u8 *peer;
9753 u8 tsid, up;
9754 u16 admitted_time = 0;
9755 int err;
9756
9757 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9758 return -EOPNOTSUPP;
9759
9760 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9761 !info->attrs[NL80211_ATTR_USER_PRIO])
9762 return -EINVAL;
9763
9764 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9765 if (tsid >= IEEE80211_NUM_TIDS)
9766 return -EINVAL;
9767
9768 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9769 if (up >= IEEE80211_NUM_UPS)
9770 return -EINVAL;
9771
9772 /* WMM uses TIDs 0-7 even for TSPEC */
9773 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9774 /* TODO: handle 802.11 TSPEC/admission control
9775 * need more attributes for that (e.g. BA session requirement);
9776 * change the WMM adminssion test above to allow both then
9777 */
9778 return -EINVAL;
9779 }
9780
9781 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9782
9783 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9784 admitted_time =
9785 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9786 if (!admitted_time)
9787 return -EINVAL;
9788 }
9789
9790 wdev_lock(wdev);
9791 switch (wdev->iftype) {
9792 case NL80211_IFTYPE_STATION:
9793 case NL80211_IFTYPE_P2P_CLIENT:
9794 if (wdev->current_bss)
9795 break;
9796 err = -ENOTCONN;
9797 goto out;
9798 default:
9799 err = -EOPNOTSUPP;
9800 goto out;
9801 }
9802
9803 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9804
9805 out:
9806 wdev_unlock(wdev);
9807 return err;
9808 }
9809
9810 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9811 {
9812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9813 struct net_device *dev = info->user_ptr[1];
9814 struct wireless_dev *wdev = dev->ieee80211_ptr;
9815 const u8 *peer;
9816 u8 tsid;
9817 int err;
9818
9819 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9820 return -EINVAL;
9821
9822 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9823 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9824
9825 wdev_lock(wdev);
9826 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9827 wdev_unlock(wdev);
9828
9829 return err;
9830 }
9831
9832 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9833 struct genl_info *info)
9834 {
9835 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9836 struct net_device *dev = info->user_ptr[1];
9837 struct wireless_dev *wdev = dev->ieee80211_ptr;
9838 struct cfg80211_chan_def chandef = {};
9839 const u8 *addr;
9840 u8 oper_class;
9841 int err;
9842
9843 if (!rdev->ops->tdls_channel_switch ||
9844 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9845 return -EOPNOTSUPP;
9846
9847 switch (dev->ieee80211_ptr->iftype) {
9848 case NL80211_IFTYPE_STATION:
9849 case NL80211_IFTYPE_P2P_CLIENT:
9850 break;
9851 default:
9852 return -EOPNOTSUPP;
9853 }
9854
9855 if (!info->attrs[NL80211_ATTR_MAC] ||
9856 !info->attrs[NL80211_ATTR_OPER_CLASS])
9857 return -EINVAL;
9858
9859 err = nl80211_parse_chandef(rdev, info, &chandef);
9860 if (err)
9861 return err;
9862
9863 /*
9864 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9865 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9866 * specification is not defined for them.
9867 */
9868 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9869 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9870 chandef.width != NL80211_CHAN_WIDTH_20)
9871 return -EINVAL;
9872
9873 /* we will be active on the TDLS link */
9874 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
9875 return -EINVAL;
9876
9877 /* don't allow switching to DFS channels */
9878 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
9879 return -EINVAL;
9880
9881 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9882 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
9883
9884 wdev_lock(wdev);
9885 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
9886 wdev_unlock(wdev);
9887
9888 return err;
9889 }
9890
9891 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
9892 struct genl_info *info)
9893 {
9894 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9895 struct net_device *dev = info->user_ptr[1];
9896 struct wireless_dev *wdev = dev->ieee80211_ptr;
9897 const u8 *addr;
9898
9899 if (!rdev->ops->tdls_channel_switch ||
9900 !rdev->ops->tdls_cancel_channel_switch ||
9901 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9902 return -EOPNOTSUPP;
9903
9904 switch (dev->ieee80211_ptr->iftype) {
9905 case NL80211_IFTYPE_STATION:
9906 case NL80211_IFTYPE_P2P_CLIENT:
9907 break;
9908 default:
9909 return -EOPNOTSUPP;
9910 }
9911
9912 if (!info->attrs[NL80211_ATTR_MAC])
9913 return -EINVAL;
9914
9915 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9916
9917 wdev_lock(wdev);
9918 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
9919 wdev_unlock(wdev);
9920
9921 return 0;
9922 }
9923
9924 #define NL80211_FLAG_NEED_WIPHY 0x01
9925 #define NL80211_FLAG_NEED_NETDEV 0x02
9926 #define NL80211_FLAG_NEED_RTNL 0x04
9927 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9928 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9929 NL80211_FLAG_CHECK_NETDEV_UP)
9930 #define NL80211_FLAG_NEED_WDEV 0x10
9931 /* If a netdev is associated, it must be UP, P2P must be started */
9932 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9933 NL80211_FLAG_CHECK_NETDEV_UP)
9934 #define NL80211_FLAG_CLEAR_SKB 0x20
9935
9936 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9937 struct genl_info *info)
9938 {
9939 struct cfg80211_registered_device *rdev;
9940 struct wireless_dev *wdev;
9941 struct net_device *dev;
9942 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9943
9944 if (rtnl)
9945 rtnl_lock();
9946
9947 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9948 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9949 if (IS_ERR(rdev)) {
9950 if (rtnl)
9951 rtnl_unlock();
9952 return PTR_ERR(rdev);
9953 }
9954 info->user_ptr[0] = rdev;
9955 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9956 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9957 ASSERT_RTNL();
9958
9959 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9960 info->attrs);
9961 if (IS_ERR(wdev)) {
9962 if (rtnl)
9963 rtnl_unlock();
9964 return PTR_ERR(wdev);
9965 }
9966
9967 dev = wdev->netdev;
9968 rdev = wiphy_to_rdev(wdev->wiphy);
9969
9970 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9971 if (!dev) {
9972 if (rtnl)
9973 rtnl_unlock();
9974 return -EINVAL;
9975 }
9976
9977 info->user_ptr[1] = dev;
9978 } else {
9979 info->user_ptr[1] = wdev;
9980 }
9981
9982 if (dev) {
9983 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9984 !netif_running(dev)) {
9985 if (rtnl)
9986 rtnl_unlock();
9987 return -ENETDOWN;
9988 }
9989
9990 dev_hold(dev);
9991 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9992 if (!wdev->p2p_started) {
9993 if (rtnl)
9994 rtnl_unlock();
9995 return -ENETDOWN;
9996 }
9997 }
9998
9999 info->user_ptr[0] = rdev;
10000 }
10001
10002 return 0;
10003 }
10004
10005 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10006 struct genl_info *info)
10007 {
10008 if (info->user_ptr[1]) {
10009 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10010 struct wireless_dev *wdev = info->user_ptr[1];
10011
10012 if (wdev->netdev)
10013 dev_put(wdev->netdev);
10014 } else {
10015 dev_put(info->user_ptr[1]);
10016 }
10017 }
10018
10019 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10020 rtnl_unlock();
10021
10022 /* If needed, clear the netlink message payload from the SKB
10023 * as it might contain key data that shouldn't stick around on
10024 * the heap after the SKB is freed. The netlink message header
10025 * is still needed for further processing, so leave it intact.
10026 */
10027 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10028 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10029
10030 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10031 }
10032 }
10033
10034 static const struct genl_ops nl80211_ops[] = {
10035 {
10036 .cmd = NL80211_CMD_GET_WIPHY,
10037 .doit = nl80211_get_wiphy,
10038 .dumpit = nl80211_dump_wiphy,
10039 .done = nl80211_dump_wiphy_done,
10040 .policy = nl80211_policy,
10041 /* can be retrieved by unprivileged users */
10042 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10043 NL80211_FLAG_NEED_RTNL,
10044 },
10045 {
10046 .cmd = NL80211_CMD_SET_WIPHY,
10047 .doit = nl80211_set_wiphy,
10048 .policy = nl80211_policy,
10049 .flags = GENL_ADMIN_PERM,
10050 .internal_flags = NL80211_FLAG_NEED_RTNL,
10051 },
10052 {
10053 .cmd = NL80211_CMD_GET_INTERFACE,
10054 .doit = nl80211_get_interface,
10055 .dumpit = nl80211_dump_interface,
10056 .policy = nl80211_policy,
10057 /* can be retrieved by unprivileged users */
10058 .internal_flags = NL80211_FLAG_NEED_WDEV |
10059 NL80211_FLAG_NEED_RTNL,
10060 },
10061 {
10062 .cmd = NL80211_CMD_SET_INTERFACE,
10063 .doit = nl80211_set_interface,
10064 .policy = nl80211_policy,
10065 .flags = GENL_ADMIN_PERM,
10066 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10067 NL80211_FLAG_NEED_RTNL,
10068 },
10069 {
10070 .cmd = NL80211_CMD_NEW_INTERFACE,
10071 .doit = nl80211_new_interface,
10072 .policy = nl80211_policy,
10073 .flags = GENL_ADMIN_PERM,
10074 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10075 NL80211_FLAG_NEED_RTNL,
10076 },
10077 {
10078 .cmd = NL80211_CMD_DEL_INTERFACE,
10079 .doit = nl80211_del_interface,
10080 .policy = nl80211_policy,
10081 .flags = GENL_ADMIN_PERM,
10082 .internal_flags = NL80211_FLAG_NEED_WDEV |
10083 NL80211_FLAG_NEED_RTNL,
10084 },
10085 {
10086 .cmd = NL80211_CMD_GET_KEY,
10087 .doit = nl80211_get_key,
10088 .policy = nl80211_policy,
10089 .flags = GENL_ADMIN_PERM,
10090 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10091 NL80211_FLAG_NEED_RTNL,
10092 },
10093 {
10094 .cmd = NL80211_CMD_SET_KEY,
10095 .doit = nl80211_set_key,
10096 .policy = nl80211_policy,
10097 .flags = GENL_ADMIN_PERM,
10098 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10099 NL80211_FLAG_NEED_RTNL |
10100 NL80211_FLAG_CLEAR_SKB,
10101 },
10102 {
10103 .cmd = NL80211_CMD_NEW_KEY,
10104 .doit = nl80211_new_key,
10105 .policy = nl80211_policy,
10106 .flags = GENL_ADMIN_PERM,
10107 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10108 NL80211_FLAG_NEED_RTNL |
10109 NL80211_FLAG_CLEAR_SKB,
10110 },
10111 {
10112 .cmd = NL80211_CMD_DEL_KEY,
10113 .doit = nl80211_del_key,
10114 .policy = nl80211_policy,
10115 .flags = GENL_ADMIN_PERM,
10116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10117 NL80211_FLAG_NEED_RTNL,
10118 },
10119 {
10120 .cmd = NL80211_CMD_SET_BEACON,
10121 .policy = nl80211_policy,
10122 .flags = GENL_ADMIN_PERM,
10123 .doit = nl80211_set_beacon,
10124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10125 NL80211_FLAG_NEED_RTNL,
10126 },
10127 {
10128 .cmd = NL80211_CMD_START_AP,
10129 .policy = nl80211_policy,
10130 .flags = GENL_ADMIN_PERM,
10131 .doit = nl80211_start_ap,
10132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10133 NL80211_FLAG_NEED_RTNL,
10134 },
10135 {
10136 .cmd = NL80211_CMD_STOP_AP,
10137 .policy = nl80211_policy,
10138 .flags = GENL_ADMIN_PERM,
10139 .doit = nl80211_stop_ap,
10140 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10141 NL80211_FLAG_NEED_RTNL,
10142 },
10143 {
10144 .cmd = NL80211_CMD_GET_STATION,
10145 .doit = nl80211_get_station,
10146 .dumpit = nl80211_dump_station,
10147 .policy = nl80211_policy,
10148 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10149 NL80211_FLAG_NEED_RTNL,
10150 },
10151 {
10152 .cmd = NL80211_CMD_SET_STATION,
10153 .doit = nl80211_set_station,
10154 .policy = nl80211_policy,
10155 .flags = GENL_ADMIN_PERM,
10156 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10157 NL80211_FLAG_NEED_RTNL,
10158 },
10159 {
10160 .cmd = NL80211_CMD_NEW_STATION,
10161 .doit = nl80211_new_station,
10162 .policy = nl80211_policy,
10163 .flags = GENL_ADMIN_PERM,
10164 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10165 NL80211_FLAG_NEED_RTNL,
10166 },
10167 {
10168 .cmd = NL80211_CMD_DEL_STATION,
10169 .doit = nl80211_del_station,
10170 .policy = nl80211_policy,
10171 .flags = GENL_ADMIN_PERM,
10172 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10173 NL80211_FLAG_NEED_RTNL,
10174 },
10175 {
10176 .cmd = NL80211_CMD_GET_MPATH,
10177 .doit = nl80211_get_mpath,
10178 .dumpit = nl80211_dump_mpath,
10179 .policy = nl80211_policy,
10180 .flags = GENL_ADMIN_PERM,
10181 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10182 NL80211_FLAG_NEED_RTNL,
10183 },
10184 {
10185 .cmd = NL80211_CMD_GET_MPP,
10186 .doit = nl80211_get_mpp,
10187 .dumpit = nl80211_dump_mpp,
10188 .policy = nl80211_policy,
10189 .flags = GENL_ADMIN_PERM,
10190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10191 NL80211_FLAG_NEED_RTNL,
10192 },
10193 {
10194 .cmd = NL80211_CMD_SET_MPATH,
10195 .doit = nl80211_set_mpath,
10196 .policy = nl80211_policy,
10197 .flags = GENL_ADMIN_PERM,
10198 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10199 NL80211_FLAG_NEED_RTNL,
10200 },
10201 {
10202 .cmd = NL80211_CMD_NEW_MPATH,
10203 .doit = nl80211_new_mpath,
10204 .policy = nl80211_policy,
10205 .flags = GENL_ADMIN_PERM,
10206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10207 NL80211_FLAG_NEED_RTNL,
10208 },
10209 {
10210 .cmd = NL80211_CMD_DEL_MPATH,
10211 .doit = nl80211_del_mpath,
10212 .policy = nl80211_policy,
10213 .flags = GENL_ADMIN_PERM,
10214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10215 NL80211_FLAG_NEED_RTNL,
10216 },
10217 {
10218 .cmd = NL80211_CMD_SET_BSS,
10219 .doit = nl80211_set_bss,
10220 .policy = nl80211_policy,
10221 .flags = GENL_ADMIN_PERM,
10222 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10223 NL80211_FLAG_NEED_RTNL,
10224 },
10225 {
10226 .cmd = NL80211_CMD_GET_REG,
10227 .doit = nl80211_get_reg,
10228 .policy = nl80211_policy,
10229 .internal_flags = NL80211_FLAG_NEED_RTNL,
10230 /* can be retrieved by unprivileged users */
10231 },
10232 {
10233 .cmd = NL80211_CMD_SET_REG,
10234 .doit = nl80211_set_reg,
10235 .policy = nl80211_policy,
10236 .flags = GENL_ADMIN_PERM,
10237 .internal_flags = NL80211_FLAG_NEED_RTNL,
10238 },
10239 {
10240 .cmd = NL80211_CMD_REQ_SET_REG,
10241 .doit = nl80211_req_set_reg,
10242 .policy = nl80211_policy,
10243 .flags = GENL_ADMIN_PERM,
10244 },
10245 {
10246 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10247 .doit = nl80211_get_mesh_config,
10248 .policy = nl80211_policy,
10249 /* can be retrieved by unprivileged users */
10250 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10251 NL80211_FLAG_NEED_RTNL,
10252 },
10253 {
10254 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10255 .doit = nl80211_update_mesh_config,
10256 .policy = nl80211_policy,
10257 .flags = GENL_ADMIN_PERM,
10258 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10259 NL80211_FLAG_NEED_RTNL,
10260 },
10261 {
10262 .cmd = NL80211_CMD_TRIGGER_SCAN,
10263 .doit = nl80211_trigger_scan,
10264 .policy = nl80211_policy,
10265 .flags = GENL_ADMIN_PERM,
10266 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10267 NL80211_FLAG_NEED_RTNL,
10268 },
10269 {
10270 .cmd = NL80211_CMD_GET_SCAN,
10271 .policy = nl80211_policy,
10272 .dumpit = nl80211_dump_scan,
10273 },
10274 {
10275 .cmd = NL80211_CMD_START_SCHED_SCAN,
10276 .doit = nl80211_start_sched_scan,
10277 .policy = nl80211_policy,
10278 .flags = GENL_ADMIN_PERM,
10279 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10280 NL80211_FLAG_NEED_RTNL,
10281 },
10282 {
10283 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10284 .doit = nl80211_stop_sched_scan,
10285 .policy = nl80211_policy,
10286 .flags = GENL_ADMIN_PERM,
10287 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10288 NL80211_FLAG_NEED_RTNL,
10289 },
10290 {
10291 .cmd = NL80211_CMD_AUTHENTICATE,
10292 .doit = nl80211_authenticate,
10293 .policy = nl80211_policy,
10294 .flags = GENL_ADMIN_PERM,
10295 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10296 NL80211_FLAG_NEED_RTNL |
10297 NL80211_FLAG_CLEAR_SKB,
10298 },
10299 {
10300 .cmd = NL80211_CMD_ASSOCIATE,
10301 .doit = nl80211_associate,
10302 .policy = nl80211_policy,
10303 .flags = GENL_ADMIN_PERM,
10304 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10305 NL80211_FLAG_NEED_RTNL,
10306 },
10307 {
10308 .cmd = NL80211_CMD_DEAUTHENTICATE,
10309 .doit = nl80211_deauthenticate,
10310 .policy = nl80211_policy,
10311 .flags = GENL_ADMIN_PERM,
10312 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10313 NL80211_FLAG_NEED_RTNL,
10314 },
10315 {
10316 .cmd = NL80211_CMD_DISASSOCIATE,
10317 .doit = nl80211_disassociate,
10318 .policy = nl80211_policy,
10319 .flags = GENL_ADMIN_PERM,
10320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10321 NL80211_FLAG_NEED_RTNL,
10322 },
10323 {
10324 .cmd = NL80211_CMD_JOIN_IBSS,
10325 .doit = nl80211_join_ibss,
10326 .policy = nl80211_policy,
10327 .flags = GENL_ADMIN_PERM,
10328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329 NL80211_FLAG_NEED_RTNL,
10330 },
10331 {
10332 .cmd = NL80211_CMD_LEAVE_IBSS,
10333 .doit = nl80211_leave_ibss,
10334 .policy = nl80211_policy,
10335 .flags = GENL_ADMIN_PERM,
10336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10337 NL80211_FLAG_NEED_RTNL,
10338 },
10339 #ifdef CONFIG_NL80211_TESTMODE
10340 {
10341 .cmd = NL80211_CMD_TESTMODE,
10342 .doit = nl80211_testmode_do,
10343 .dumpit = nl80211_testmode_dump,
10344 .policy = nl80211_policy,
10345 .flags = GENL_ADMIN_PERM,
10346 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10347 NL80211_FLAG_NEED_RTNL,
10348 },
10349 #endif
10350 {
10351 .cmd = NL80211_CMD_CONNECT,
10352 .doit = nl80211_connect,
10353 .policy = nl80211_policy,
10354 .flags = GENL_ADMIN_PERM,
10355 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10356 NL80211_FLAG_NEED_RTNL,
10357 },
10358 {
10359 .cmd = NL80211_CMD_DISCONNECT,
10360 .doit = nl80211_disconnect,
10361 .policy = nl80211_policy,
10362 .flags = GENL_ADMIN_PERM,
10363 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10364 NL80211_FLAG_NEED_RTNL,
10365 },
10366 {
10367 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10368 .doit = nl80211_wiphy_netns,
10369 .policy = nl80211_policy,
10370 .flags = GENL_ADMIN_PERM,
10371 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10372 NL80211_FLAG_NEED_RTNL,
10373 },
10374 {
10375 .cmd = NL80211_CMD_GET_SURVEY,
10376 .policy = nl80211_policy,
10377 .dumpit = nl80211_dump_survey,
10378 },
10379 {
10380 .cmd = NL80211_CMD_SET_PMKSA,
10381 .doit = nl80211_setdel_pmksa,
10382 .policy = nl80211_policy,
10383 .flags = GENL_ADMIN_PERM,
10384 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10385 NL80211_FLAG_NEED_RTNL,
10386 },
10387 {
10388 .cmd = NL80211_CMD_DEL_PMKSA,
10389 .doit = nl80211_setdel_pmksa,
10390 .policy = nl80211_policy,
10391 .flags = GENL_ADMIN_PERM,
10392 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10393 NL80211_FLAG_NEED_RTNL,
10394 },
10395 {
10396 .cmd = NL80211_CMD_FLUSH_PMKSA,
10397 .doit = nl80211_flush_pmksa,
10398 .policy = nl80211_policy,
10399 .flags = GENL_ADMIN_PERM,
10400 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10401 NL80211_FLAG_NEED_RTNL,
10402 },
10403 {
10404 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10405 .doit = nl80211_remain_on_channel,
10406 .policy = nl80211_policy,
10407 .flags = GENL_ADMIN_PERM,
10408 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10409 NL80211_FLAG_NEED_RTNL,
10410 },
10411 {
10412 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10413 .doit = nl80211_cancel_remain_on_channel,
10414 .policy = nl80211_policy,
10415 .flags = GENL_ADMIN_PERM,
10416 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10417 NL80211_FLAG_NEED_RTNL,
10418 },
10419 {
10420 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10421 .doit = nl80211_set_tx_bitrate_mask,
10422 .policy = nl80211_policy,
10423 .flags = GENL_ADMIN_PERM,
10424 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10425 NL80211_FLAG_NEED_RTNL,
10426 },
10427 {
10428 .cmd = NL80211_CMD_REGISTER_FRAME,
10429 .doit = nl80211_register_mgmt,
10430 .policy = nl80211_policy,
10431 .flags = GENL_ADMIN_PERM,
10432 .internal_flags = NL80211_FLAG_NEED_WDEV |
10433 NL80211_FLAG_NEED_RTNL,
10434 },
10435 {
10436 .cmd = NL80211_CMD_FRAME,
10437 .doit = nl80211_tx_mgmt,
10438 .policy = nl80211_policy,
10439 .flags = GENL_ADMIN_PERM,
10440 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10441 NL80211_FLAG_NEED_RTNL,
10442 },
10443 {
10444 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10445 .doit = nl80211_tx_mgmt_cancel_wait,
10446 .policy = nl80211_policy,
10447 .flags = GENL_ADMIN_PERM,
10448 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10449 NL80211_FLAG_NEED_RTNL,
10450 },
10451 {
10452 .cmd = NL80211_CMD_SET_POWER_SAVE,
10453 .doit = nl80211_set_power_save,
10454 .policy = nl80211_policy,
10455 .flags = GENL_ADMIN_PERM,
10456 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10457 NL80211_FLAG_NEED_RTNL,
10458 },
10459 {
10460 .cmd = NL80211_CMD_GET_POWER_SAVE,
10461 .doit = nl80211_get_power_save,
10462 .policy = nl80211_policy,
10463 /* can be retrieved by unprivileged users */
10464 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10465 NL80211_FLAG_NEED_RTNL,
10466 },
10467 {
10468 .cmd = NL80211_CMD_SET_CQM,
10469 .doit = nl80211_set_cqm,
10470 .policy = nl80211_policy,
10471 .flags = GENL_ADMIN_PERM,
10472 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10473 NL80211_FLAG_NEED_RTNL,
10474 },
10475 {
10476 .cmd = NL80211_CMD_SET_CHANNEL,
10477 .doit = nl80211_set_channel,
10478 .policy = nl80211_policy,
10479 .flags = GENL_ADMIN_PERM,
10480 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10481 NL80211_FLAG_NEED_RTNL,
10482 },
10483 {
10484 .cmd = NL80211_CMD_SET_WDS_PEER,
10485 .doit = nl80211_set_wds_peer,
10486 .policy = nl80211_policy,
10487 .flags = GENL_ADMIN_PERM,
10488 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10489 NL80211_FLAG_NEED_RTNL,
10490 },
10491 {
10492 .cmd = NL80211_CMD_JOIN_MESH,
10493 .doit = nl80211_join_mesh,
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_LEAVE_MESH,
10501 .doit = nl80211_leave_mesh,
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_JOIN_OCB,
10509 .doit = nl80211_join_ocb,
10510 .policy = nl80211_policy,
10511 .flags = GENL_ADMIN_PERM,
10512 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10513 NL80211_FLAG_NEED_RTNL,
10514 },
10515 {
10516 .cmd = NL80211_CMD_LEAVE_OCB,
10517 .doit = nl80211_leave_ocb,
10518 .policy = nl80211_policy,
10519 .flags = GENL_ADMIN_PERM,
10520 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10521 NL80211_FLAG_NEED_RTNL,
10522 },
10523 #ifdef CONFIG_PM
10524 {
10525 .cmd = NL80211_CMD_GET_WOWLAN,
10526 .doit = nl80211_get_wowlan,
10527 .policy = nl80211_policy,
10528 /* can be retrieved by unprivileged users */
10529 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10530 NL80211_FLAG_NEED_RTNL,
10531 },
10532 {
10533 .cmd = NL80211_CMD_SET_WOWLAN,
10534 .doit = nl80211_set_wowlan,
10535 .policy = nl80211_policy,
10536 .flags = GENL_ADMIN_PERM,
10537 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10538 NL80211_FLAG_NEED_RTNL,
10539 },
10540 #endif
10541 {
10542 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10543 .doit = nl80211_set_rekey_data,
10544 .policy = nl80211_policy,
10545 .flags = GENL_ADMIN_PERM,
10546 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10547 NL80211_FLAG_NEED_RTNL |
10548 NL80211_FLAG_CLEAR_SKB,
10549 },
10550 {
10551 .cmd = NL80211_CMD_TDLS_MGMT,
10552 .doit = nl80211_tdls_mgmt,
10553 .policy = nl80211_policy,
10554 .flags = GENL_ADMIN_PERM,
10555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10556 NL80211_FLAG_NEED_RTNL,
10557 },
10558 {
10559 .cmd = NL80211_CMD_TDLS_OPER,
10560 .doit = nl80211_tdls_oper,
10561 .policy = nl80211_policy,
10562 .flags = GENL_ADMIN_PERM,
10563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10564 NL80211_FLAG_NEED_RTNL,
10565 },
10566 {
10567 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10568 .doit = nl80211_register_unexpected_frame,
10569 .policy = nl80211_policy,
10570 .flags = GENL_ADMIN_PERM,
10571 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10572 NL80211_FLAG_NEED_RTNL,
10573 },
10574 {
10575 .cmd = NL80211_CMD_PROBE_CLIENT,
10576 .doit = nl80211_probe_client,
10577 .policy = nl80211_policy,
10578 .flags = GENL_ADMIN_PERM,
10579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10580 NL80211_FLAG_NEED_RTNL,
10581 },
10582 {
10583 .cmd = NL80211_CMD_REGISTER_BEACONS,
10584 .doit = nl80211_register_beacons,
10585 .policy = nl80211_policy,
10586 .flags = GENL_ADMIN_PERM,
10587 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10588 NL80211_FLAG_NEED_RTNL,
10589 },
10590 {
10591 .cmd = NL80211_CMD_SET_NOACK_MAP,
10592 .doit = nl80211_set_noack_map,
10593 .policy = nl80211_policy,
10594 .flags = GENL_ADMIN_PERM,
10595 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10596 NL80211_FLAG_NEED_RTNL,
10597 },
10598 {
10599 .cmd = NL80211_CMD_START_P2P_DEVICE,
10600 .doit = nl80211_start_p2p_device,
10601 .policy = nl80211_policy,
10602 .flags = GENL_ADMIN_PERM,
10603 .internal_flags = NL80211_FLAG_NEED_WDEV |
10604 NL80211_FLAG_NEED_RTNL,
10605 },
10606 {
10607 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10608 .doit = nl80211_stop_p2p_device,
10609 .policy = nl80211_policy,
10610 .flags = GENL_ADMIN_PERM,
10611 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10612 NL80211_FLAG_NEED_RTNL,
10613 },
10614 {
10615 .cmd = NL80211_CMD_SET_MCAST_RATE,
10616 .doit = nl80211_set_mcast_rate,
10617 .policy = nl80211_policy,
10618 .flags = GENL_ADMIN_PERM,
10619 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10620 NL80211_FLAG_NEED_RTNL,
10621 },
10622 {
10623 .cmd = NL80211_CMD_SET_MAC_ACL,
10624 .doit = nl80211_set_mac_acl,
10625 .policy = nl80211_policy,
10626 .flags = GENL_ADMIN_PERM,
10627 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10628 NL80211_FLAG_NEED_RTNL,
10629 },
10630 {
10631 .cmd = NL80211_CMD_RADAR_DETECT,
10632 .doit = nl80211_start_radar_detection,
10633 .policy = nl80211_policy,
10634 .flags = GENL_ADMIN_PERM,
10635 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10636 NL80211_FLAG_NEED_RTNL,
10637 },
10638 {
10639 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10640 .doit = nl80211_get_protocol_features,
10641 .policy = nl80211_policy,
10642 },
10643 {
10644 .cmd = NL80211_CMD_UPDATE_FT_IES,
10645 .doit = nl80211_update_ft_ies,
10646 .policy = nl80211_policy,
10647 .flags = GENL_ADMIN_PERM,
10648 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10649 NL80211_FLAG_NEED_RTNL,
10650 },
10651 {
10652 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10653 .doit = nl80211_crit_protocol_start,
10654 .policy = nl80211_policy,
10655 .flags = GENL_ADMIN_PERM,
10656 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10657 NL80211_FLAG_NEED_RTNL,
10658 },
10659 {
10660 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10661 .doit = nl80211_crit_protocol_stop,
10662 .policy = nl80211_policy,
10663 .flags = GENL_ADMIN_PERM,
10664 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10665 NL80211_FLAG_NEED_RTNL,
10666 },
10667 {
10668 .cmd = NL80211_CMD_GET_COALESCE,
10669 .doit = nl80211_get_coalesce,
10670 .policy = nl80211_policy,
10671 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10672 NL80211_FLAG_NEED_RTNL,
10673 },
10674 {
10675 .cmd = NL80211_CMD_SET_COALESCE,
10676 .doit = nl80211_set_coalesce,
10677 .policy = nl80211_policy,
10678 .flags = GENL_ADMIN_PERM,
10679 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10680 NL80211_FLAG_NEED_RTNL,
10681 },
10682 {
10683 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10684 .doit = nl80211_channel_switch,
10685 .policy = nl80211_policy,
10686 .flags = GENL_ADMIN_PERM,
10687 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10688 NL80211_FLAG_NEED_RTNL,
10689 },
10690 {
10691 .cmd = NL80211_CMD_VENDOR,
10692 .doit = nl80211_vendor_cmd,
10693 .policy = nl80211_policy,
10694 .flags = GENL_ADMIN_PERM,
10695 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10696 NL80211_FLAG_NEED_RTNL,
10697 },
10698 {
10699 .cmd = NL80211_CMD_SET_QOS_MAP,
10700 .doit = nl80211_set_qos_map,
10701 .policy = nl80211_policy,
10702 .flags = GENL_ADMIN_PERM,
10703 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10704 NL80211_FLAG_NEED_RTNL,
10705 },
10706 {
10707 .cmd = NL80211_CMD_ADD_TX_TS,
10708 .doit = nl80211_add_tx_ts,
10709 .policy = nl80211_policy,
10710 .flags = GENL_ADMIN_PERM,
10711 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10712 NL80211_FLAG_NEED_RTNL,
10713 },
10714 {
10715 .cmd = NL80211_CMD_DEL_TX_TS,
10716 .doit = nl80211_del_tx_ts,
10717 .policy = nl80211_policy,
10718 .flags = GENL_ADMIN_PERM,
10719 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10720 NL80211_FLAG_NEED_RTNL,
10721 },
10722 {
10723 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10724 .doit = nl80211_tdls_channel_switch,
10725 .policy = nl80211_policy,
10726 .flags = GENL_ADMIN_PERM,
10727 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10728 NL80211_FLAG_NEED_RTNL,
10729 },
10730 {
10731 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10732 .doit = nl80211_tdls_cancel_channel_switch,
10733 .policy = nl80211_policy,
10734 .flags = GENL_ADMIN_PERM,
10735 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10736 NL80211_FLAG_NEED_RTNL,
10737 },
10738 };
10739
10740 /* notification functions */
10741
10742 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10743 enum nl80211_commands cmd)
10744 {
10745 struct sk_buff *msg;
10746 struct nl80211_dump_wiphy_state state = {};
10747
10748 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10749 cmd != NL80211_CMD_DEL_WIPHY);
10750
10751 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10752 if (!msg)
10753 return;
10754
10755 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10756 nlmsg_free(msg);
10757 return;
10758 }
10759
10760 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10761 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10762 }
10763
10764 static int nl80211_add_scan_req(struct sk_buff *msg,
10765 struct cfg80211_registered_device *rdev)
10766 {
10767 struct cfg80211_scan_request *req = rdev->scan_req;
10768 struct nlattr *nest;
10769 int i;
10770
10771 if (WARN_ON(!req))
10772 return 0;
10773
10774 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10775 if (!nest)
10776 goto nla_put_failure;
10777 for (i = 0; i < req->n_ssids; i++) {
10778 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10779 goto nla_put_failure;
10780 }
10781 nla_nest_end(msg, nest);
10782
10783 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10784 if (!nest)
10785 goto nla_put_failure;
10786 for (i = 0; i < req->n_channels; i++) {
10787 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10788 goto nla_put_failure;
10789 }
10790 nla_nest_end(msg, nest);
10791
10792 if (req->ie &&
10793 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10794 goto nla_put_failure;
10795
10796 if (req->flags &&
10797 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10798 goto nla_put_failure;
10799
10800 return 0;
10801 nla_put_failure:
10802 return -ENOBUFS;
10803 }
10804
10805 static int nl80211_send_scan_msg(struct sk_buff *msg,
10806 struct cfg80211_registered_device *rdev,
10807 struct wireless_dev *wdev,
10808 u32 portid, u32 seq, int flags,
10809 u32 cmd)
10810 {
10811 void *hdr;
10812
10813 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10814 if (!hdr)
10815 return -1;
10816
10817 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10818 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10819 wdev->netdev->ifindex)) ||
10820 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10821 goto nla_put_failure;
10822
10823 /* ignore errors and send incomplete event anyway */
10824 nl80211_add_scan_req(msg, rdev);
10825
10826 return genlmsg_end(msg, hdr);
10827
10828 nla_put_failure:
10829 genlmsg_cancel(msg, hdr);
10830 return -EMSGSIZE;
10831 }
10832
10833 static int
10834 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10835 struct cfg80211_registered_device *rdev,
10836 struct net_device *netdev,
10837 u32 portid, u32 seq, int flags, u32 cmd)
10838 {
10839 void *hdr;
10840
10841 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10842 if (!hdr)
10843 return -1;
10844
10845 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10846 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10847 goto nla_put_failure;
10848
10849 return genlmsg_end(msg, hdr);
10850
10851 nla_put_failure:
10852 genlmsg_cancel(msg, hdr);
10853 return -EMSGSIZE;
10854 }
10855
10856 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10857 struct wireless_dev *wdev)
10858 {
10859 struct sk_buff *msg;
10860
10861 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10862 if (!msg)
10863 return;
10864
10865 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10866 NL80211_CMD_TRIGGER_SCAN) < 0) {
10867 nlmsg_free(msg);
10868 return;
10869 }
10870
10871 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10872 NL80211_MCGRP_SCAN, GFP_KERNEL);
10873 }
10874
10875 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10876 struct wireless_dev *wdev, bool aborted)
10877 {
10878 struct sk_buff *msg;
10879
10880 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10881 if (!msg)
10882 return NULL;
10883
10884 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10885 aborted ? NL80211_CMD_SCAN_ABORTED :
10886 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10887 nlmsg_free(msg);
10888 return NULL;
10889 }
10890
10891 return msg;
10892 }
10893
10894 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10895 struct sk_buff *msg)
10896 {
10897 if (!msg)
10898 return;
10899
10900 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10901 NL80211_MCGRP_SCAN, GFP_KERNEL);
10902 }
10903
10904 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10905 struct net_device *netdev)
10906 {
10907 struct sk_buff *msg;
10908
10909 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10910 if (!msg)
10911 return;
10912
10913 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10914 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10915 nlmsg_free(msg);
10916 return;
10917 }
10918
10919 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10920 NL80211_MCGRP_SCAN, GFP_KERNEL);
10921 }
10922
10923 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10924 struct net_device *netdev, u32 cmd)
10925 {
10926 struct sk_buff *msg;
10927
10928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10929 if (!msg)
10930 return;
10931
10932 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10933 nlmsg_free(msg);
10934 return;
10935 }
10936
10937 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10938 NL80211_MCGRP_SCAN, GFP_KERNEL);
10939 }
10940
10941 /*
10942 * This can happen on global regulatory changes or device specific settings
10943 * based on custom world regulatory domains.
10944 */
10945 void nl80211_send_reg_change_event(struct regulatory_request *request)
10946 {
10947 struct sk_buff *msg;
10948 void *hdr;
10949
10950 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10951 if (!msg)
10952 return;
10953
10954 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10955 if (!hdr) {
10956 nlmsg_free(msg);
10957 return;
10958 }
10959
10960 /* Userspace can always count this one always being set */
10961 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10962 goto nla_put_failure;
10963
10964 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10965 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10966 NL80211_REGDOM_TYPE_WORLD))
10967 goto nla_put_failure;
10968 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10969 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10970 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10971 goto nla_put_failure;
10972 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10973 request->intersect) {
10974 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10975 NL80211_REGDOM_TYPE_INTERSECTION))
10976 goto nla_put_failure;
10977 } else {
10978 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10979 NL80211_REGDOM_TYPE_COUNTRY) ||
10980 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10981 request->alpha2))
10982 goto nla_put_failure;
10983 }
10984
10985 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10986 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10987 goto nla_put_failure;
10988
10989 genlmsg_end(msg, hdr);
10990
10991 rcu_read_lock();
10992 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10993 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10994 rcu_read_unlock();
10995
10996 return;
10997
10998 nla_put_failure:
10999 genlmsg_cancel(msg, hdr);
11000 nlmsg_free(msg);
11001 }
11002
11003 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11004 struct net_device *netdev,
11005 const u8 *buf, size_t len,
11006 enum nl80211_commands cmd, gfp_t gfp,
11007 int uapsd_queues)
11008 {
11009 struct sk_buff *msg;
11010 void *hdr;
11011
11012 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11013 if (!msg)
11014 return;
11015
11016 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11017 if (!hdr) {
11018 nlmsg_free(msg);
11019 return;
11020 }
11021
11022 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11023 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11024 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11025 goto nla_put_failure;
11026
11027 if (uapsd_queues >= 0) {
11028 struct nlattr *nla_wmm =
11029 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11030 if (!nla_wmm)
11031 goto nla_put_failure;
11032
11033 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11034 uapsd_queues))
11035 goto nla_put_failure;
11036
11037 nla_nest_end(msg, nla_wmm);
11038 }
11039
11040 genlmsg_end(msg, hdr);
11041
11042 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11043 NL80211_MCGRP_MLME, gfp);
11044 return;
11045
11046 nla_put_failure:
11047 genlmsg_cancel(msg, hdr);
11048 nlmsg_free(msg);
11049 }
11050
11051 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11052 struct net_device *netdev, const u8 *buf,
11053 size_t len, gfp_t gfp)
11054 {
11055 nl80211_send_mlme_event(rdev, netdev, buf, len,
11056 NL80211_CMD_AUTHENTICATE, gfp, -1);
11057 }
11058
11059 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11060 struct net_device *netdev, const u8 *buf,
11061 size_t len, gfp_t gfp, int uapsd_queues)
11062 {
11063 nl80211_send_mlme_event(rdev, netdev, buf, len,
11064 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11065 }
11066
11067 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11068 struct net_device *netdev, const u8 *buf,
11069 size_t len, gfp_t gfp)
11070 {
11071 nl80211_send_mlme_event(rdev, netdev, buf, len,
11072 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11073 }
11074
11075 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11076 struct net_device *netdev, const u8 *buf,
11077 size_t len, gfp_t gfp)
11078 {
11079 nl80211_send_mlme_event(rdev, netdev, buf, len,
11080 NL80211_CMD_DISASSOCIATE, gfp, -1);
11081 }
11082
11083 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11084 size_t len)
11085 {
11086 struct wireless_dev *wdev = dev->ieee80211_ptr;
11087 struct wiphy *wiphy = wdev->wiphy;
11088 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11089 const struct ieee80211_mgmt *mgmt = (void *)buf;
11090 u32 cmd;
11091
11092 if (WARN_ON(len < 2))
11093 return;
11094
11095 if (ieee80211_is_deauth(mgmt->frame_control))
11096 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11097 else
11098 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11099
11100 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11101 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11102 }
11103 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11104
11105 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11106 struct net_device *netdev, int cmd,
11107 const u8 *addr, gfp_t gfp)
11108 {
11109 struct sk_buff *msg;
11110 void *hdr;
11111
11112 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11113 if (!msg)
11114 return;
11115
11116 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11117 if (!hdr) {
11118 nlmsg_free(msg);
11119 return;
11120 }
11121
11122 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11123 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11124 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11125 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11126 goto nla_put_failure;
11127
11128 genlmsg_end(msg, hdr);
11129
11130 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11131 NL80211_MCGRP_MLME, gfp);
11132 return;
11133
11134 nla_put_failure:
11135 genlmsg_cancel(msg, hdr);
11136 nlmsg_free(msg);
11137 }
11138
11139 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11140 struct net_device *netdev, const u8 *addr,
11141 gfp_t gfp)
11142 {
11143 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11144 addr, gfp);
11145 }
11146
11147 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11148 struct net_device *netdev, const u8 *addr,
11149 gfp_t gfp)
11150 {
11151 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11152 addr, gfp);
11153 }
11154
11155 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11156 struct net_device *netdev, const u8 *bssid,
11157 const u8 *req_ie, size_t req_ie_len,
11158 const u8 *resp_ie, size_t resp_ie_len,
11159 u16 status, gfp_t gfp)
11160 {
11161 struct sk_buff *msg;
11162 void *hdr;
11163
11164 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11165 if (!msg)
11166 return;
11167
11168 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11169 if (!hdr) {
11170 nlmsg_free(msg);
11171 return;
11172 }
11173
11174 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11175 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11176 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11177 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11178 (req_ie &&
11179 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11180 (resp_ie &&
11181 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11182 goto nla_put_failure;
11183
11184 genlmsg_end(msg, hdr);
11185
11186 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11187 NL80211_MCGRP_MLME, gfp);
11188 return;
11189
11190 nla_put_failure:
11191 genlmsg_cancel(msg, hdr);
11192 nlmsg_free(msg);
11193
11194 }
11195
11196 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11197 struct net_device *netdev, const u8 *bssid,
11198 const u8 *req_ie, size_t req_ie_len,
11199 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11200 {
11201 struct sk_buff *msg;
11202 void *hdr;
11203
11204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11205 if (!msg)
11206 return;
11207
11208 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11209 if (!hdr) {
11210 nlmsg_free(msg);
11211 return;
11212 }
11213
11214 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11215 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11216 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11217 (req_ie &&
11218 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11219 (resp_ie &&
11220 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11221 goto nla_put_failure;
11222
11223 genlmsg_end(msg, hdr);
11224
11225 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11226 NL80211_MCGRP_MLME, gfp);
11227 return;
11228
11229 nla_put_failure:
11230 genlmsg_cancel(msg, hdr);
11231 nlmsg_free(msg);
11232
11233 }
11234
11235 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11236 struct net_device *netdev, u16 reason,
11237 const u8 *ie, size_t ie_len, bool from_ap)
11238 {
11239 struct sk_buff *msg;
11240 void *hdr;
11241
11242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11243 if (!msg)
11244 return;
11245
11246 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11247 if (!hdr) {
11248 nlmsg_free(msg);
11249 return;
11250 }
11251
11252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11253 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11254 (from_ap && reason &&
11255 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11256 (from_ap &&
11257 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11258 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11259 goto nla_put_failure;
11260
11261 genlmsg_end(msg, hdr);
11262
11263 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11264 NL80211_MCGRP_MLME, GFP_KERNEL);
11265 return;
11266
11267 nla_put_failure:
11268 genlmsg_cancel(msg, hdr);
11269 nlmsg_free(msg);
11270
11271 }
11272
11273 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11274 struct net_device *netdev, const u8 *bssid,
11275 gfp_t gfp)
11276 {
11277 struct sk_buff *msg;
11278 void *hdr;
11279
11280 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11281 if (!msg)
11282 return;
11283
11284 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11285 if (!hdr) {
11286 nlmsg_free(msg);
11287 return;
11288 }
11289
11290 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11291 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11292 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11293 goto nla_put_failure;
11294
11295 genlmsg_end(msg, hdr);
11296
11297 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11298 NL80211_MCGRP_MLME, gfp);
11299 return;
11300
11301 nla_put_failure:
11302 genlmsg_cancel(msg, hdr);
11303 nlmsg_free(msg);
11304 }
11305
11306 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11307 const u8* ie, u8 ie_len, gfp_t gfp)
11308 {
11309 struct wireless_dev *wdev = dev->ieee80211_ptr;
11310 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11311 struct sk_buff *msg;
11312 void *hdr;
11313
11314 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11315 return;
11316
11317 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11318
11319 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11320 if (!msg)
11321 return;
11322
11323 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11324 if (!hdr) {
11325 nlmsg_free(msg);
11326 return;
11327 }
11328
11329 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11330 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11331 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11332 (ie_len && ie &&
11333 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11334 goto nla_put_failure;
11335
11336 genlmsg_end(msg, hdr);
11337
11338 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11339 NL80211_MCGRP_MLME, gfp);
11340 return;
11341
11342 nla_put_failure:
11343 genlmsg_cancel(msg, hdr);
11344 nlmsg_free(msg);
11345 }
11346 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11347
11348 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11349 struct net_device *netdev, const u8 *addr,
11350 enum nl80211_key_type key_type, int key_id,
11351 const u8 *tsc, gfp_t gfp)
11352 {
11353 struct sk_buff *msg;
11354 void *hdr;
11355
11356 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11357 if (!msg)
11358 return;
11359
11360 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11361 if (!hdr) {
11362 nlmsg_free(msg);
11363 return;
11364 }
11365
11366 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11367 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11368 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11369 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11370 (key_id != -1 &&
11371 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11372 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11373 goto nla_put_failure;
11374
11375 genlmsg_end(msg, hdr);
11376
11377 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11378 NL80211_MCGRP_MLME, gfp);
11379 return;
11380
11381 nla_put_failure:
11382 genlmsg_cancel(msg, hdr);
11383 nlmsg_free(msg);
11384 }
11385
11386 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11387 struct ieee80211_channel *channel_before,
11388 struct ieee80211_channel *channel_after)
11389 {
11390 struct sk_buff *msg;
11391 void *hdr;
11392 struct nlattr *nl_freq;
11393
11394 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11395 if (!msg)
11396 return;
11397
11398 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11399 if (!hdr) {
11400 nlmsg_free(msg);
11401 return;
11402 }
11403
11404 /*
11405 * Since we are applying the beacon hint to a wiphy we know its
11406 * wiphy_idx is valid
11407 */
11408 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11409 goto nla_put_failure;
11410
11411 /* Before */
11412 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11413 if (!nl_freq)
11414 goto nla_put_failure;
11415 if (nl80211_msg_put_channel(msg, channel_before, false))
11416 goto nla_put_failure;
11417 nla_nest_end(msg, nl_freq);
11418
11419 /* After */
11420 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11421 if (!nl_freq)
11422 goto nla_put_failure;
11423 if (nl80211_msg_put_channel(msg, channel_after, false))
11424 goto nla_put_failure;
11425 nla_nest_end(msg, nl_freq);
11426
11427 genlmsg_end(msg, hdr);
11428
11429 rcu_read_lock();
11430 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11431 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11432 rcu_read_unlock();
11433
11434 return;
11435
11436 nla_put_failure:
11437 genlmsg_cancel(msg, hdr);
11438 nlmsg_free(msg);
11439 }
11440
11441 static void nl80211_send_remain_on_chan_event(
11442 int cmd, struct cfg80211_registered_device *rdev,
11443 struct wireless_dev *wdev, u64 cookie,
11444 struct ieee80211_channel *chan,
11445 unsigned int duration, gfp_t gfp)
11446 {
11447 struct sk_buff *msg;
11448 void *hdr;
11449
11450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11451 if (!msg)
11452 return;
11453
11454 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11455 if (!hdr) {
11456 nlmsg_free(msg);
11457 return;
11458 }
11459
11460 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11461 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11462 wdev->netdev->ifindex)) ||
11463 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11464 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11465 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11466 NL80211_CHAN_NO_HT) ||
11467 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11468 goto nla_put_failure;
11469
11470 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11471 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11472 goto nla_put_failure;
11473
11474 genlmsg_end(msg, hdr);
11475
11476 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11477 NL80211_MCGRP_MLME, gfp);
11478 return;
11479
11480 nla_put_failure:
11481 genlmsg_cancel(msg, hdr);
11482 nlmsg_free(msg);
11483 }
11484
11485 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11486 struct ieee80211_channel *chan,
11487 unsigned int duration, gfp_t gfp)
11488 {
11489 struct wiphy *wiphy = wdev->wiphy;
11490 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11491
11492 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11493 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11494 rdev, wdev, cookie, chan,
11495 duration, gfp);
11496 }
11497 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11498
11499 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11500 struct ieee80211_channel *chan,
11501 gfp_t gfp)
11502 {
11503 struct wiphy *wiphy = wdev->wiphy;
11504 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11505
11506 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11507 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11508 rdev, wdev, cookie, chan, 0, gfp);
11509 }
11510 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11511
11512 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11513 struct station_info *sinfo, gfp_t gfp)
11514 {
11515 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11516 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11517 struct sk_buff *msg;
11518
11519 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11520
11521 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11522 if (!msg)
11523 return;
11524
11525 if (nl80211_send_station(msg, 0, 0, 0,
11526 rdev, dev, mac_addr, sinfo) < 0) {
11527 nlmsg_free(msg);
11528 return;
11529 }
11530
11531 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11532 NL80211_MCGRP_MLME, gfp);
11533 }
11534 EXPORT_SYMBOL(cfg80211_new_sta);
11535
11536 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11537 {
11538 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11539 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11540 struct sk_buff *msg;
11541 void *hdr;
11542
11543 trace_cfg80211_del_sta(dev, mac_addr);
11544
11545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11546 if (!msg)
11547 return;
11548
11549 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11550 if (!hdr) {
11551 nlmsg_free(msg);
11552 return;
11553 }
11554
11555 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11556 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11557 goto nla_put_failure;
11558
11559 genlmsg_end(msg, hdr);
11560
11561 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11562 NL80211_MCGRP_MLME, gfp);
11563 return;
11564
11565 nla_put_failure:
11566 genlmsg_cancel(msg, hdr);
11567 nlmsg_free(msg);
11568 }
11569 EXPORT_SYMBOL(cfg80211_del_sta);
11570
11571 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11572 enum nl80211_connect_failed_reason reason,
11573 gfp_t gfp)
11574 {
11575 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11576 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11577 struct sk_buff *msg;
11578 void *hdr;
11579
11580 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11581 if (!msg)
11582 return;
11583
11584 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11585 if (!hdr) {
11586 nlmsg_free(msg);
11587 return;
11588 }
11589
11590 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11591 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11592 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11593 goto nla_put_failure;
11594
11595 genlmsg_end(msg, hdr);
11596
11597 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11598 NL80211_MCGRP_MLME, gfp);
11599 return;
11600
11601 nla_put_failure:
11602 genlmsg_cancel(msg, hdr);
11603 nlmsg_free(msg);
11604 }
11605 EXPORT_SYMBOL(cfg80211_conn_failed);
11606
11607 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11608 const u8 *addr, gfp_t gfp)
11609 {
11610 struct wireless_dev *wdev = dev->ieee80211_ptr;
11611 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11612 struct sk_buff *msg;
11613 void *hdr;
11614 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11615
11616 if (!nlportid)
11617 return false;
11618
11619 msg = nlmsg_new(100, gfp);
11620 if (!msg)
11621 return true;
11622
11623 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11624 if (!hdr) {
11625 nlmsg_free(msg);
11626 return true;
11627 }
11628
11629 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11630 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11631 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11632 goto nla_put_failure;
11633
11634 genlmsg_end(msg, hdr);
11635 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11636 return true;
11637
11638 nla_put_failure:
11639 genlmsg_cancel(msg, hdr);
11640 nlmsg_free(msg);
11641 return true;
11642 }
11643
11644 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11645 const u8 *addr, gfp_t gfp)
11646 {
11647 struct wireless_dev *wdev = dev->ieee80211_ptr;
11648 bool ret;
11649
11650 trace_cfg80211_rx_spurious_frame(dev, addr);
11651
11652 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11653 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11654 trace_cfg80211_return_bool(false);
11655 return false;
11656 }
11657 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11658 addr, gfp);
11659 trace_cfg80211_return_bool(ret);
11660 return ret;
11661 }
11662 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11663
11664 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11665 const u8 *addr, gfp_t gfp)
11666 {
11667 struct wireless_dev *wdev = dev->ieee80211_ptr;
11668 bool ret;
11669
11670 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11671
11672 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11673 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11674 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11675 trace_cfg80211_return_bool(false);
11676 return false;
11677 }
11678 ret = __nl80211_unexpected_frame(dev,
11679 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11680 addr, gfp);
11681 trace_cfg80211_return_bool(ret);
11682 return ret;
11683 }
11684 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11685
11686 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11687 struct wireless_dev *wdev, u32 nlportid,
11688 int freq, int sig_dbm,
11689 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11690 {
11691 struct net_device *netdev = wdev->netdev;
11692 struct sk_buff *msg;
11693 void *hdr;
11694
11695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11696 if (!msg)
11697 return -ENOMEM;
11698
11699 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11700 if (!hdr) {
11701 nlmsg_free(msg);
11702 return -ENOMEM;
11703 }
11704
11705 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11706 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11707 netdev->ifindex)) ||
11708 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11709 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11710 (sig_dbm &&
11711 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11712 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11713 (flags &&
11714 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11715 goto nla_put_failure;
11716
11717 genlmsg_end(msg, hdr);
11718
11719 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11720
11721 nla_put_failure:
11722 genlmsg_cancel(msg, hdr);
11723 nlmsg_free(msg);
11724 return -ENOBUFS;
11725 }
11726
11727 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11728 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11729 {
11730 struct wiphy *wiphy = wdev->wiphy;
11731 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11732 struct net_device *netdev = wdev->netdev;
11733 struct sk_buff *msg;
11734 void *hdr;
11735
11736 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11737
11738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11739 if (!msg)
11740 return;
11741
11742 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11743 if (!hdr) {
11744 nlmsg_free(msg);
11745 return;
11746 }
11747
11748 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11749 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11750 netdev->ifindex)) ||
11751 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11752 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11753 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11754 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11755 goto nla_put_failure;
11756
11757 genlmsg_end(msg, hdr);
11758
11759 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11760 NL80211_MCGRP_MLME, gfp);
11761 return;
11762
11763 nla_put_failure:
11764 genlmsg_cancel(msg, hdr);
11765 nlmsg_free(msg);
11766 }
11767 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11768
11769 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11770 const char *mac, gfp_t gfp)
11771 {
11772 struct wireless_dev *wdev = dev->ieee80211_ptr;
11773 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11774 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11775 void **cb;
11776
11777 if (!msg)
11778 return NULL;
11779
11780 cb = (void **)msg->cb;
11781
11782 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11783 if (!cb[0]) {
11784 nlmsg_free(msg);
11785 return NULL;
11786 }
11787
11788 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11789 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11790 goto nla_put_failure;
11791
11792 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11793 goto nla_put_failure;
11794
11795 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11796 if (!cb[1])
11797 goto nla_put_failure;
11798
11799 cb[2] = rdev;
11800
11801 return msg;
11802 nla_put_failure:
11803 nlmsg_free(msg);
11804 return NULL;
11805 }
11806
11807 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11808 {
11809 void **cb = (void **)msg->cb;
11810 struct cfg80211_registered_device *rdev = cb[2];
11811
11812 nla_nest_end(msg, cb[1]);
11813 genlmsg_end(msg, cb[0]);
11814
11815 memset(msg->cb, 0, sizeof(msg->cb));
11816
11817 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11818 NL80211_MCGRP_MLME, gfp);
11819 }
11820
11821 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11822 enum nl80211_cqm_rssi_threshold_event rssi_event,
11823 gfp_t gfp)
11824 {
11825 struct sk_buff *msg;
11826
11827 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11828
11829 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11830 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11831 return;
11832
11833 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11834 if (!msg)
11835 return;
11836
11837 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11838 rssi_event))
11839 goto nla_put_failure;
11840
11841 cfg80211_send_cqm(msg, gfp);
11842
11843 return;
11844
11845 nla_put_failure:
11846 nlmsg_free(msg);
11847 }
11848 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11849
11850 void cfg80211_cqm_txe_notify(struct net_device *dev,
11851 const u8 *peer, u32 num_packets,
11852 u32 rate, u32 intvl, gfp_t gfp)
11853 {
11854 struct sk_buff *msg;
11855
11856 msg = cfg80211_prepare_cqm(dev, peer, gfp);
11857 if (!msg)
11858 return;
11859
11860 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11861 goto nla_put_failure;
11862
11863 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11864 goto nla_put_failure;
11865
11866 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11867 goto nla_put_failure;
11868
11869 cfg80211_send_cqm(msg, gfp);
11870 return;
11871
11872 nla_put_failure:
11873 nlmsg_free(msg);
11874 }
11875 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11876
11877 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11878 const u8 *peer, u32 num_packets, gfp_t gfp)
11879 {
11880 struct sk_buff *msg;
11881
11882 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11883
11884 msg = cfg80211_prepare_cqm(dev, peer, gfp);
11885 if (!msg)
11886 return;
11887
11888 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11889 goto nla_put_failure;
11890
11891 cfg80211_send_cqm(msg, gfp);
11892 return;
11893
11894 nla_put_failure:
11895 nlmsg_free(msg);
11896 }
11897 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11898
11899 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
11900 {
11901 struct sk_buff *msg;
11902
11903 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11904 if (!msg)
11905 return;
11906
11907 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
11908 goto nla_put_failure;
11909
11910 cfg80211_send_cqm(msg, gfp);
11911 return;
11912
11913 nla_put_failure:
11914 nlmsg_free(msg);
11915 }
11916 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
11917
11918 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11919 struct net_device *netdev, const u8 *bssid,
11920 const u8 *replay_ctr, gfp_t gfp)
11921 {
11922 struct sk_buff *msg;
11923 struct nlattr *rekey_attr;
11924 void *hdr;
11925
11926 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11927 if (!msg)
11928 return;
11929
11930 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11931 if (!hdr) {
11932 nlmsg_free(msg);
11933 return;
11934 }
11935
11936 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11937 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11938 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11939 goto nla_put_failure;
11940
11941 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11942 if (!rekey_attr)
11943 goto nla_put_failure;
11944
11945 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11946 NL80211_REPLAY_CTR_LEN, replay_ctr))
11947 goto nla_put_failure;
11948
11949 nla_nest_end(msg, rekey_attr);
11950
11951 genlmsg_end(msg, hdr);
11952
11953 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11954 NL80211_MCGRP_MLME, gfp);
11955 return;
11956
11957 nla_put_failure:
11958 genlmsg_cancel(msg, hdr);
11959 nlmsg_free(msg);
11960 }
11961
11962 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11963 const u8 *replay_ctr, gfp_t gfp)
11964 {
11965 struct wireless_dev *wdev = dev->ieee80211_ptr;
11966 struct wiphy *wiphy = wdev->wiphy;
11967 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11968
11969 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11970 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11971 }
11972 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11973
11974 static void
11975 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11976 struct net_device *netdev, int index,
11977 const u8 *bssid, bool preauth, gfp_t gfp)
11978 {
11979 struct sk_buff *msg;
11980 struct nlattr *attr;
11981 void *hdr;
11982
11983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11984 if (!msg)
11985 return;
11986
11987 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11988 if (!hdr) {
11989 nlmsg_free(msg);
11990 return;
11991 }
11992
11993 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11994 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11995 goto nla_put_failure;
11996
11997 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11998 if (!attr)
11999 goto nla_put_failure;
12000
12001 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12002 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12003 (preauth &&
12004 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12005 goto nla_put_failure;
12006
12007 nla_nest_end(msg, attr);
12008
12009 genlmsg_end(msg, hdr);
12010
12011 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12012 NL80211_MCGRP_MLME, gfp);
12013 return;
12014
12015 nla_put_failure:
12016 genlmsg_cancel(msg, hdr);
12017 nlmsg_free(msg);
12018 }
12019
12020 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12021 const u8 *bssid, bool preauth, gfp_t gfp)
12022 {
12023 struct wireless_dev *wdev = dev->ieee80211_ptr;
12024 struct wiphy *wiphy = wdev->wiphy;
12025 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12026
12027 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12028 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12029 }
12030 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12031
12032 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12033 struct net_device *netdev,
12034 struct cfg80211_chan_def *chandef,
12035 gfp_t gfp,
12036 enum nl80211_commands notif,
12037 u8 count)
12038 {
12039 struct sk_buff *msg;
12040 void *hdr;
12041
12042 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12043 if (!msg)
12044 return;
12045
12046 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12047 if (!hdr) {
12048 nlmsg_free(msg);
12049 return;
12050 }
12051
12052 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12053 goto nla_put_failure;
12054
12055 if (nl80211_send_chandef(msg, chandef))
12056 goto nla_put_failure;
12057
12058 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12059 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12060 goto nla_put_failure;
12061
12062 genlmsg_end(msg, hdr);
12063
12064 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12065 NL80211_MCGRP_MLME, gfp);
12066 return;
12067
12068 nla_put_failure:
12069 genlmsg_cancel(msg, hdr);
12070 nlmsg_free(msg);
12071 }
12072
12073 void cfg80211_ch_switch_notify(struct net_device *dev,
12074 struct cfg80211_chan_def *chandef)
12075 {
12076 struct wireless_dev *wdev = dev->ieee80211_ptr;
12077 struct wiphy *wiphy = wdev->wiphy;
12078 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12079
12080 ASSERT_WDEV_LOCK(wdev);
12081
12082 trace_cfg80211_ch_switch_notify(dev, chandef);
12083
12084 wdev->chandef = *chandef;
12085 wdev->preset_chandef = *chandef;
12086 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12087 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12088 }
12089 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12090
12091 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12092 struct cfg80211_chan_def *chandef,
12093 u8 count)
12094 {
12095 struct wireless_dev *wdev = dev->ieee80211_ptr;
12096 struct wiphy *wiphy = wdev->wiphy;
12097 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12098
12099 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12100
12101 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12102 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12103 }
12104 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12105
12106 void
12107 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12108 const struct cfg80211_chan_def *chandef,
12109 enum nl80211_radar_event event,
12110 struct net_device *netdev, gfp_t gfp)
12111 {
12112 struct sk_buff *msg;
12113 void *hdr;
12114
12115 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12116 if (!msg)
12117 return;
12118
12119 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12120 if (!hdr) {
12121 nlmsg_free(msg);
12122 return;
12123 }
12124
12125 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12126 goto nla_put_failure;
12127
12128 /* NOP and radar events don't need a netdev parameter */
12129 if (netdev) {
12130 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12131
12132 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12133 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12134 goto nla_put_failure;
12135 }
12136
12137 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12138 goto nla_put_failure;
12139
12140 if (nl80211_send_chandef(msg, chandef))
12141 goto nla_put_failure;
12142
12143 genlmsg_end(msg, hdr);
12144
12145 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12146 NL80211_MCGRP_MLME, gfp);
12147 return;
12148
12149 nla_put_failure:
12150 genlmsg_cancel(msg, hdr);
12151 nlmsg_free(msg);
12152 }
12153
12154 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12155 u64 cookie, bool acked, gfp_t gfp)
12156 {
12157 struct wireless_dev *wdev = dev->ieee80211_ptr;
12158 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12159 struct sk_buff *msg;
12160 void *hdr;
12161
12162 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12163
12164 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12165
12166 if (!msg)
12167 return;
12168
12169 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12170 if (!hdr) {
12171 nlmsg_free(msg);
12172 return;
12173 }
12174
12175 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12176 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12177 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12178 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12179 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12180 goto nla_put_failure;
12181
12182 genlmsg_end(msg, hdr);
12183
12184 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12185 NL80211_MCGRP_MLME, gfp);
12186 return;
12187
12188 nla_put_failure:
12189 genlmsg_cancel(msg, hdr);
12190 nlmsg_free(msg);
12191 }
12192 EXPORT_SYMBOL(cfg80211_probe_status);
12193
12194 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12195 const u8 *frame, size_t len,
12196 int freq, int sig_dbm)
12197 {
12198 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12199 struct sk_buff *msg;
12200 void *hdr;
12201 struct cfg80211_beacon_registration *reg;
12202
12203 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12204
12205 spin_lock_bh(&rdev->beacon_registrations_lock);
12206 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12207 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12208 if (!msg) {
12209 spin_unlock_bh(&rdev->beacon_registrations_lock);
12210 return;
12211 }
12212
12213 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12214 if (!hdr)
12215 goto nla_put_failure;
12216
12217 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12218 (freq &&
12219 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12220 (sig_dbm &&
12221 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12222 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12223 goto nla_put_failure;
12224
12225 genlmsg_end(msg, hdr);
12226
12227 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12228 }
12229 spin_unlock_bh(&rdev->beacon_registrations_lock);
12230 return;
12231
12232 nla_put_failure:
12233 spin_unlock_bh(&rdev->beacon_registrations_lock);
12234 if (hdr)
12235 genlmsg_cancel(msg, hdr);
12236 nlmsg_free(msg);
12237 }
12238 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12239
12240 #ifdef CONFIG_PM
12241 static int cfg80211_net_detect_results(struct sk_buff *msg,
12242 struct cfg80211_wowlan_wakeup *wakeup)
12243 {
12244 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12245 struct nlattr *nl_results, *nl_match, *nl_freqs;
12246 int i, j;
12247
12248 nl_results = nla_nest_start(
12249 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12250 if (!nl_results)
12251 return -EMSGSIZE;
12252
12253 for (i = 0; i < nd->n_matches; i++) {
12254 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12255
12256 nl_match = nla_nest_start(msg, i);
12257 if (!nl_match)
12258 break;
12259
12260 /* The SSID attribute is optional in nl80211, but for
12261 * simplicity reasons it's always present in the
12262 * cfg80211 structure. If a driver can't pass the
12263 * SSID, that needs to be changed. A zero length SSID
12264 * is still a valid SSID (wildcard), so it cannot be
12265 * used for this purpose.
12266 */
12267 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12268 match->ssid.ssid)) {
12269 nla_nest_cancel(msg, nl_match);
12270 goto out;
12271 }
12272
12273 if (match->n_channels) {
12274 nl_freqs = nla_nest_start(
12275 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12276 if (!nl_freqs) {
12277 nla_nest_cancel(msg, nl_match);
12278 goto out;
12279 }
12280
12281 for (j = 0; j < match->n_channels; j++) {
12282 if (nla_put_u32(msg,
12283 NL80211_ATTR_WIPHY_FREQ,
12284 match->channels[j])) {
12285 nla_nest_cancel(msg, nl_freqs);
12286 nla_nest_cancel(msg, nl_match);
12287 goto out;
12288 }
12289 }
12290
12291 nla_nest_end(msg, nl_freqs);
12292 }
12293
12294 nla_nest_end(msg, nl_match);
12295 }
12296
12297 out:
12298 nla_nest_end(msg, nl_results);
12299 return 0;
12300 }
12301
12302 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12303 struct cfg80211_wowlan_wakeup *wakeup,
12304 gfp_t gfp)
12305 {
12306 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12307 struct sk_buff *msg;
12308 void *hdr;
12309 int size = 200;
12310
12311 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12312
12313 if (wakeup)
12314 size += wakeup->packet_present_len;
12315
12316 msg = nlmsg_new(size, gfp);
12317 if (!msg)
12318 return;
12319
12320 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12321 if (!hdr)
12322 goto free_msg;
12323
12324 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12325 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12326 goto free_msg;
12327
12328 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12329 wdev->netdev->ifindex))
12330 goto free_msg;
12331
12332 if (wakeup) {
12333 struct nlattr *reasons;
12334
12335 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12336 if (!reasons)
12337 goto free_msg;
12338
12339 if (wakeup->disconnect &&
12340 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12341 goto free_msg;
12342 if (wakeup->magic_pkt &&
12343 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12344 goto free_msg;
12345 if (wakeup->gtk_rekey_failure &&
12346 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12347 goto free_msg;
12348 if (wakeup->eap_identity_req &&
12349 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12350 goto free_msg;
12351 if (wakeup->four_way_handshake &&
12352 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12353 goto free_msg;
12354 if (wakeup->rfkill_release &&
12355 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12356 goto free_msg;
12357
12358 if (wakeup->pattern_idx >= 0 &&
12359 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12360 wakeup->pattern_idx))
12361 goto free_msg;
12362
12363 if (wakeup->tcp_match &&
12364 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12365 goto free_msg;
12366
12367 if (wakeup->tcp_connlost &&
12368 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12369 goto free_msg;
12370
12371 if (wakeup->tcp_nomoretokens &&
12372 nla_put_flag(msg,
12373 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12374 goto free_msg;
12375
12376 if (wakeup->packet) {
12377 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12378 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12379
12380 if (!wakeup->packet_80211) {
12381 pkt_attr =
12382 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12383 len_attr =
12384 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12385 }
12386
12387 if (wakeup->packet_len &&
12388 nla_put_u32(msg, len_attr, wakeup->packet_len))
12389 goto free_msg;
12390
12391 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12392 wakeup->packet))
12393 goto free_msg;
12394 }
12395
12396 if (wakeup->net_detect &&
12397 cfg80211_net_detect_results(msg, wakeup))
12398 goto free_msg;
12399
12400 nla_nest_end(msg, reasons);
12401 }
12402
12403 genlmsg_end(msg, hdr);
12404
12405 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12406 NL80211_MCGRP_MLME, gfp);
12407 return;
12408
12409 free_msg:
12410 nlmsg_free(msg);
12411 }
12412 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12413 #endif
12414
12415 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12416 enum nl80211_tdls_operation oper,
12417 u16 reason_code, gfp_t gfp)
12418 {
12419 struct wireless_dev *wdev = dev->ieee80211_ptr;
12420 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12421 struct sk_buff *msg;
12422 void *hdr;
12423
12424 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12425 reason_code);
12426
12427 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12428 if (!msg)
12429 return;
12430
12431 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12432 if (!hdr) {
12433 nlmsg_free(msg);
12434 return;
12435 }
12436
12437 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12438 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12439 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12440 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12441 (reason_code > 0 &&
12442 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12443 goto nla_put_failure;
12444
12445 genlmsg_end(msg, hdr);
12446
12447 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12448 NL80211_MCGRP_MLME, gfp);
12449 return;
12450
12451 nla_put_failure:
12452 genlmsg_cancel(msg, hdr);
12453 nlmsg_free(msg);
12454 }
12455 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12456
12457 static int nl80211_netlink_notify(struct notifier_block * nb,
12458 unsigned long state,
12459 void *_notify)
12460 {
12461 struct netlink_notify *notify = _notify;
12462 struct cfg80211_registered_device *rdev;
12463 struct wireless_dev *wdev;
12464 struct cfg80211_beacon_registration *reg, *tmp;
12465
12466 if (state != NETLINK_URELEASE)
12467 return NOTIFY_DONE;
12468
12469 rcu_read_lock();
12470
12471 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12472 bool schedule_destroy_work = false;
12473
12474 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12475 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12476
12477 if (wdev->owner_nlportid == notify->portid)
12478 schedule_destroy_work = true;
12479 }
12480
12481 spin_lock_bh(&rdev->beacon_registrations_lock);
12482 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12483 list) {
12484 if (reg->nlportid == notify->portid) {
12485 list_del(&reg->list);
12486 kfree(reg);
12487 break;
12488 }
12489 }
12490 spin_unlock_bh(&rdev->beacon_registrations_lock);
12491
12492 if (schedule_destroy_work) {
12493 struct cfg80211_iface_destroy *destroy;
12494
12495 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12496 if (destroy) {
12497 destroy->nlportid = notify->portid;
12498 spin_lock(&rdev->destroy_list_lock);
12499 list_add(&destroy->list, &rdev->destroy_list);
12500 spin_unlock(&rdev->destroy_list_lock);
12501 schedule_work(&rdev->destroy_work);
12502 }
12503 }
12504 }
12505
12506 rcu_read_unlock();
12507
12508 return NOTIFY_OK;
12509 }
12510
12511 static struct notifier_block nl80211_netlink_notifier = {
12512 .notifier_call = nl80211_netlink_notify,
12513 };
12514
12515 void cfg80211_ft_event(struct net_device *netdev,
12516 struct cfg80211_ft_event_params *ft_event)
12517 {
12518 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12519 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12520 struct sk_buff *msg;
12521 void *hdr;
12522
12523 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12524
12525 if (!ft_event->target_ap)
12526 return;
12527
12528 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12529 if (!msg)
12530 return;
12531
12532 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12533 if (!hdr)
12534 goto out;
12535
12536 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12537 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12538 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12539 goto out;
12540
12541 if (ft_event->ies &&
12542 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12543 goto out;
12544 if (ft_event->ric_ies &&
12545 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12546 ft_event->ric_ies))
12547 goto out;
12548
12549 genlmsg_end(msg, hdr);
12550
12551 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12552 NL80211_MCGRP_MLME, GFP_KERNEL);
12553 return;
12554 out:
12555 nlmsg_free(msg);
12556 }
12557 EXPORT_SYMBOL(cfg80211_ft_event);
12558
12559 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12560 {
12561 struct cfg80211_registered_device *rdev;
12562 struct sk_buff *msg;
12563 void *hdr;
12564 u32 nlportid;
12565
12566 rdev = wiphy_to_rdev(wdev->wiphy);
12567 if (!rdev->crit_proto_nlportid)
12568 return;
12569
12570 nlportid = rdev->crit_proto_nlportid;
12571 rdev->crit_proto_nlportid = 0;
12572
12573 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12574 if (!msg)
12575 return;
12576
12577 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12578 if (!hdr)
12579 goto nla_put_failure;
12580
12581 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12582 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12583 goto nla_put_failure;
12584
12585 genlmsg_end(msg, hdr);
12586
12587 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12588 return;
12589
12590 nla_put_failure:
12591 if (hdr)
12592 genlmsg_cancel(msg, hdr);
12593 nlmsg_free(msg);
12594
12595 }
12596 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12597
12598 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12599 {
12600 struct wiphy *wiphy = wdev->wiphy;
12601 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12602 struct sk_buff *msg;
12603 void *hdr;
12604
12605 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12606 if (!msg)
12607 return;
12608
12609 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12610 if (!hdr)
12611 goto out;
12612
12613 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12614 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12615 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12616 goto out;
12617
12618 genlmsg_end(msg, hdr);
12619
12620 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12621 NL80211_MCGRP_MLME, GFP_KERNEL);
12622 return;
12623 out:
12624 nlmsg_free(msg);
12625 }
12626
12627 /* initialisation/exit functions */
12628
12629 int nl80211_init(void)
12630 {
12631 int err;
12632
12633 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12634 nl80211_mcgrps);
12635 if (err)
12636 return err;
12637
12638 err = netlink_register_notifier(&nl80211_netlink_notifier);
12639 if (err)
12640 goto err_out;
12641
12642 return 0;
12643 err_out:
12644 genl_unregister_family(&nl80211_fam);
12645 return err;
12646 }
12647
12648 void nl80211_exit(void)
12649 {
12650 netlink_unregister_notifier(&nl80211_netlink_notifier);
12651 genl_unregister_family(&nl80211_fam);
12652 }
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