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cfg80211: Allow a scan request for a specific BSSID
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2016 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
38 struct genl_info *info);
39
40 /* the netlink family */
41 static struct genl_family nl80211_fam = {
42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
43 .name = NL80211_GENL_NAME, /* have users key off the name instead */
44 .hdrsize = 0, /* no private header */
45 .version = 1, /* no particular meaning now */
46 .maxattr = NL80211_ATTR_MAX,
47 .netnsok = true,
48 .pre_doit = nl80211_pre_doit,
49 .post_doit = nl80211_post_doit,
50 };
51
52 /* multicast groups */
53 enum nl80211_multicast_groups {
54 NL80211_MCGRP_CONFIG,
55 NL80211_MCGRP_SCAN,
56 NL80211_MCGRP_REGULATORY,
57 NL80211_MCGRP_MLME,
58 NL80211_MCGRP_VENDOR,
59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
60 };
61
62 static const struct genl_multicast_group nl80211_mcgrps[] = {
63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
68 #ifdef CONFIG_NL80211_TESTMODE
69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
70 #endif
71 };
72
73 /* returns ERR_PTR values */
74 static struct wireless_dev *
75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
76 {
77 struct cfg80211_registered_device *rdev;
78 struct wireless_dev *result = NULL;
79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
81 u64 wdev_id;
82 int wiphy_idx = -1;
83 int ifidx = -1;
84
85 ASSERT_RTNL();
86
87 if (!have_ifidx && !have_wdev_id)
88 return ERR_PTR(-EINVAL);
89
90 if (have_ifidx)
91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
92 if (have_wdev_id) {
93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
94 wiphy_idx = wdev_id >> 32;
95 }
96
97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
98 struct wireless_dev *wdev;
99
100 if (wiphy_net(&rdev->wiphy) != netns)
101 continue;
102
103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
104 continue;
105
106 list_for_each_entry(wdev, &rdev->wdev_list, list) {
107 if (have_ifidx && wdev->netdev &&
108 wdev->netdev->ifindex == ifidx) {
109 result = wdev;
110 break;
111 }
112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
113 result = wdev;
114 break;
115 }
116 }
117
118 if (result)
119 break;
120 }
121
122 if (result)
123 return result;
124 return ERR_PTR(-ENODEV);
125 }
126
127 static struct cfg80211_registered_device *
128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
129 {
130 struct cfg80211_registered_device *rdev = NULL, *tmp;
131 struct net_device *netdev;
132
133 ASSERT_RTNL();
134
135 if (!attrs[NL80211_ATTR_WIPHY] &&
136 !attrs[NL80211_ATTR_IFINDEX] &&
137 !attrs[NL80211_ATTR_WDEV])
138 return ERR_PTR(-EINVAL);
139
140 if (attrs[NL80211_ATTR_WIPHY])
141 rdev = cfg80211_rdev_by_wiphy_idx(
142 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
143
144 if (attrs[NL80211_ATTR_WDEV]) {
145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
146 struct wireless_dev *wdev;
147 bool found = false;
148
149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
150 if (tmp) {
151 /* make sure wdev exists */
152 list_for_each_entry(wdev, &tmp->wdev_list, list) {
153 if (wdev->identifier != (u32)wdev_id)
154 continue;
155 found = true;
156 break;
157 }
158
159 if (!found)
160 tmp = NULL;
161
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164 rdev = tmp;
165 }
166 }
167
168 if (attrs[NL80211_ATTR_IFINDEX]) {
169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
170 netdev = __dev_get_by_index(netns, ifindex);
171 if (netdev) {
172 if (netdev->ieee80211_ptr)
173 tmp = wiphy_to_rdev(
174 netdev->ieee80211_ptr->wiphy);
175 else
176 tmp = NULL;
177
178 /* not wireless device -- return error */
179 if (!tmp)
180 return ERR_PTR(-EINVAL);
181
182 /* mismatch -- return error */
183 if (rdev && tmp != rdev)
184 return ERR_PTR(-EINVAL);
185
186 rdev = tmp;
187 }
188 }
189
190 if (!rdev)
191 return ERR_PTR(-ENODEV);
192
193 if (netns != wiphy_net(&rdev->wiphy))
194 return ERR_PTR(-ENODEV);
195
196 return rdev;
197 }
198
199 /*
200 * This function returns a pointer to the driver
201 * that the genl_info item that is passed refers to.
202 *
203 * The result of this can be a PTR_ERR and hence must
204 * be checked with IS_ERR() for errors.
205 */
206 static struct cfg80211_registered_device *
207 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
208 {
209 return __cfg80211_rdev_from_attrs(netns, info->attrs);
210 }
211
212 /* policy for the attributes */
213 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
214 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
215 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
216 .len = 20-1 },
217 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
218
219 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
220 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
221 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
223 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
224
225 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
227 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
230 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
231
232 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
234 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
235
236 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
237 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
238
239 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
240 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
241 .len = WLAN_MAX_KEY_LEN },
242 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
243 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
244 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
245 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
246 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
247
248 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
249 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
250 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
251 .len = IEEE80211_MAX_DATA_LEN },
252 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_DATA_LEN },
254 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
255 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
256 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
257 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
258 .len = NL80211_MAX_SUPP_RATES },
259 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
260 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
261 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
262 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
263 .len = IEEE80211_MAX_MESH_ID_LEN },
264 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
265
266 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
267 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
268
269 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
273 .len = NL80211_MAX_SUPP_RATES },
274 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
275
276 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
277 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
278
279 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
280
281 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
282 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
283 .len = IEEE80211_MAX_DATA_LEN },
284 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
285 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
286
287 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
288 .len = IEEE80211_MAX_SSID_LEN },
289 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
290 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
291 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
292 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
293 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
294 [NL80211_ATTR_STA_FLAGS2] = {
295 .len = sizeof(struct nl80211_sta_flag_update),
296 },
297 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
299 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
300 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
301 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
302 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
303 [NL80211_ATTR_PID] = { .type = NLA_U32 },
304 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
305 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
306 .len = WLAN_PMKID_LEN },
307 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
308 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
309 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
310 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
311 .len = IEEE80211_MAX_DATA_LEN },
312 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
313 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
314 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
315 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
316 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
317 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
319 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
320 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
321 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
322 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
323 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
324 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
325 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
326 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
327 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
328 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
329 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
330 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
331 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
332 .len = IEEE80211_MAX_DATA_LEN },
333 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
334 .len = IEEE80211_MAX_DATA_LEN },
335 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
336 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
337 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
338 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
343 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
344 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
345 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
346 .len = IEEE80211_MAX_DATA_LEN },
347 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
348 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
350 .len = NL80211_HT_CAPABILITY_LEN
351 },
352 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
353 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
354 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
355 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
356 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
357 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
358 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
359 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
360 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
361 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
362 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
363 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
364 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
365 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
366 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
367 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
368 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
369 .len = NL80211_VHT_CAPABILITY_LEN,
370 },
371 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
372 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
373 .len = IEEE80211_MAX_DATA_LEN },
374 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
375 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
376 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
377 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
378 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
379 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
381 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
382 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
383 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
384 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
387 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
388 .len = IEEE80211_QOS_MAP_LEN_MAX },
389 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
390 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
391 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
392 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
393 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
394 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
395 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
396 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
397 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
398 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
399 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
400 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
401 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
402 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
403 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
404 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
405 };
406
407 /* policy for the key attributes */
408 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
409 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
410 [NL80211_KEY_IDX] = { .type = NLA_U8 },
411 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
412 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
413 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
414 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
415 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
416 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
417 };
418
419 /* policy for the key default flags */
420 static const struct nla_policy
421 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
422 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
423 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
424 };
425
426 /* policy for WoWLAN attributes */
427 static const struct nla_policy
428 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
429 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
433 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
435 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
436 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
437 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
438 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
439 };
440
441 static const struct nla_policy
442 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
443 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
444 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
445 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
446 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
447 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
448 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
449 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
450 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
451 },
452 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
453 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
454 },
455 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
456 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
457 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
458 };
459
460 /* policy for coalesce rule attributes */
461 static const struct nla_policy
462 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
463 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
464 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
465 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
466 };
467
468 /* policy for GTK rekey offload attributes */
469 static const struct nla_policy
470 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
471 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
472 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
473 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
474 };
475
476 static const struct nla_policy
477 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
478 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
479 .len = IEEE80211_MAX_SSID_LEN },
480 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
481 };
482
483 static const struct nla_policy
484 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
485 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
486 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
487 };
488
489 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
490 struct netlink_callback *cb,
491 struct cfg80211_registered_device **rdev,
492 struct wireless_dev **wdev)
493 {
494 int err;
495
496 rtnl_lock();
497
498 if (!cb->args[0]) {
499 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
500 nl80211_fam.attrbuf, nl80211_fam.maxattr,
501 nl80211_policy);
502 if (err)
503 goto out_unlock;
504
505 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
506 nl80211_fam.attrbuf);
507 if (IS_ERR(*wdev)) {
508 err = PTR_ERR(*wdev);
509 goto out_unlock;
510 }
511 *rdev = wiphy_to_rdev((*wdev)->wiphy);
512 /* 0 is the first index - add 1 to parse only once */
513 cb->args[0] = (*rdev)->wiphy_idx + 1;
514 cb->args[1] = (*wdev)->identifier;
515 } else {
516 /* subtract the 1 again here */
517 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
518 struct wireless_dev *tmp;
519
520 if (!wiphy) {
521 err = -ENODEV;
522 goto out_unlock;
523 }
524 *rdev = wiphy_to_rdev(wiphy);
525 *wdev = NULL;
526
527 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
528 if (tmp->identifier == cb->args[1]) {
529 *wdev = tmp;
530 break;
531 }
532 }
533
534 if (!*wdev) {
535 err = -ENODEV;
536 goto out_unlock;
537 }
538 }
539
540 return 0;
541 out_unlock:
542 rtnl_unlock();
543 return err;
544 }
545
546 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
547 {
548 rtnl_unlock();
549 }
550
551 /* IE validation */
552 static bool is_valid_ie_attr(const struct nlattr *attr)
553 {
554 const u8 *pos;
555 int len;
556
557 if (!attr)
558 return true;
559
560 pos = nla_data(attr);
561 len = nla_len(attr);
562
563 while (len) {
564 u8 elemlen;
565
566 if (len < 2)
567 return false;
568 len -= 2;
569
570 elemlen = pos[1];
571 if (elemlen > len)
572 return false;
573
574 len -= elemlen;
575 pos += 2 + elemlen;
576 }
577
578 return true;
579 }
580
581 /* message building helper */
582 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
583 int flags, u8 cmd)
584 {
585 /* since there is no private header just add the generic one */
586 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
587 }
588
589 static int nl80211_msg_put_channel(struct sk_buff *msg,
590 struct ieee80211_channel *chan,
591 bool large)
592 {
593 /* Some channels must be completely excluded from the
594 * list to protect old user-space tools from breaking
595 */
596 if (!large && chan->flags &
597 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
598 return 0;
599
600 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
601 chan->center_freq))
602 goto nla_put_failure;
603
604 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
605 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
606 goto nla_put_failure;
607 if (chan->flags & IEEE80211_CHAN_NO_IR) {
608 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
609 goto nla_put_failure;
610 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
611 goto nla_put_failure;
612 }
613 if (chan->flags & IEEE80211_CHAN_RADAR) {
614 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
615 goto nla_put_failure;
616 if (large) {
617 u32 time;
618
619 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
620
621 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
622 chan->dfs_state))
623 goto nla_put_failure;
624 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
625 time))
626 goto nla_put_failure;
627 if (nla_put_u32(msg,
628 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
629 chan->dfs_cac_ms))
630 goto nla_put_failure;
631 }
632 }
633
634 if (large) {
635 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
637 goto nla_put_failure;
638 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
640 goto nla_put_failure;
641 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
643 goto nla_put_failure;
644 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
646 goto nla_put_failure;
647 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
648 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
649 goto nla_put_failure;
650 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
651 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
652 goto nla_put_failure;
653 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
654 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
655 goto nla_put_failure;
656 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
657 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
658 goto nla_put_failure;
659 }
660
661 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
662 DBM_TO_MBM(chan->max_power)))
663 goto nla_put_failure;
664
665 return 0;
666
667 nla_put_failure:
668 return -ENOBUFS;
669 }
670
671 /* netlink command implementations */
672
673 struct key_parse {
674 struct key_params p;
675 int idx;
676 int type;
677 bool def, defmgmt;
678 bool def_uni, def_multi;
679 };
680
681 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
682 {
683 struct nlattr *tb[NL80211_KEY_MAX + 1];
684 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
685 nl80211_key_policy);
686 if (err)
687 return err;
688
689 k->def = !!tb[NL80211_KEY_DEFAULT];
690 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
691
692 if (k->def) {
693 k->def_uni = true;
694 k->def_multi = true;
695 }
696 if (k->defmgmt)
697 k->def_multi = true;
698
699 if (tb[NL80211_KEY_IDX])
700 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
701
702 if (tb[NL80211_KEY_DATA]) {
703 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
704 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
705 }
706
707 if (tb[NL80211_KEY_SEQ]) {
708 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
709 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
710 }
711
712 if (tb[NL80211_KEY_CIPHER])
713 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
714
715 if (tb[NL80211_KEY_TYPE]) {
716 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
717 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
718 return -EINVAL;
719 }
720
721 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
722 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
723 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
724 tb[NL80211_KEY_DEFAULT_TYPES],
725 nl80211_key_default_policy);
726 if (err)
727 return err;
728
729 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
730 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
731 }
732
733 return 0;
734 }
735
736 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
737 {
738 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
739 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
740 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
741 }
742
743 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
744 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
745 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
746 }
747
748 if (info->attrs[NL80211_ATTR_KEY_IDX])
749 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
750
751 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
752 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
753
754 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
755 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
756
757 if (k->def) {
758 k->def_uni = true;
759 k->def_multi = true;
760 }
761 if (k->defmgmt)
762 k->def_multi = true;
763
764 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
765 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
766 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
767 return -EINVAL;
768 }
769
770 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
771 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
772 int err = nla_parse_nested(
773 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
774 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
775 nl80211_key_default_policy);
776 if (err)
777 return err;
778
779 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
780 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
781 }
782
783 return 0;
784 }
785
786 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
787 {
788 int err;
789
790 memset(k, 0, sizeof(*k));
791 k->idx = -1;
792 k->type = -1;
793
794 if (info->attrs[NL80211_ATTR_KEY])
795 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
796 else
797 err = nl80211_parse_key_old(info, k);
798
799 if (err)
800 return err;
801
802 if (k->def && k->defmgmt)
803 return -EINVAL;
804
805 if (k->defmgmt) {
806 if (k->def_uni || !k->def_multi)
807 return -EINVAL;
808 }
809
810 if (k->idx != -1) {
811 if (k->defmgmt) {
812 if (k->idx < 4 || k->idx > 5)
813 return -EINVAL;
814 } else if (k->def) {
815 if (k->idx < 0 || k->idx > 3)
816 return -EINVAL;
817 } else {
818 if (k->idx < 0 || k->idx > 5)
819 return -EINVAL;
820 }
821 }
822
823 return 0;
824 }
825
826 static struct cfg80211_cached_keys *
827 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
828 struct nlattr *keys, bool *no_ht)
829 {
830 struct key_parse parse;
831 struct nlattr *key;
832 struct cfg80211_cached_keys *result;
833 int rem, err, def = 0;
834
835 result = kzalloc(sizeof(*result), GFP_KERNEL);
836 if (!result)
837 return ERR_PTR(-ENOMEM);
838
839 result->def = -1;
840 result->defmgmt = -1;
841
842 nla_for_each_nested(key, keys, rem) {
843 memset(&parse, 0, sizeof(parse));
844 parse.idx = -1;
845
846 err = nl80211_parse_key_new(key, &parse);
847 if (err)
848 goto error;
849 err = -EINVAL;
850 if (!parse.p.key)
851 goto error;
852 if (parse.idx < 0 || parse.idx > 4)
853 goto error;
854 if (parse.def) {
855 if (def)
856 goto error;
857 def = 1;
858 result->def = parse.idx;
859 if (!parse.def_uni || !parse.def_multi)
860 goto error;
861 } else if (parse.defmgmt)
862 goto error;
863 err = cfg80211_validate_key_settings(rdev, &parse.p,
864 parse.idx, false, NULL);
865 if (err)
866 goto error;
867 result->params[parse.idx].cipher = parse.p.cipher;
868 result->params[parse.idx].key_len = parse.p.key_len;
869 result->params[parse.idx].key = result->data[parse.idx];
870 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
871
872 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
873 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
874 if (no_ht)
875 *no_ht = true;
876 }
877 }
878
879 return result;
880 error:
881 kfree(result);
882 return ERR_PTR(err);
883 }
884
885 static int nl80211_key_allowed(struct wireless_dev *wdev)
886 {
887 ASSERT_WDEV_LOCK(wdev);
888
889 switch (wdev->iftype) {
890 case NL80211_IFTYPE_AP:
891 case NL80211_IFTYPE_AP_VLAN:
892 case NL80211_IFTYPE_P2P_GO:
893 case NL80211_IFTYPE_MESH_POINT:
894 break;
895 case NL80211_IFTYPE_ADHOC:
896 case NL80211_IFTYPE_STATION:
897 case NL80211_IFTYPE_P2P_CLIENT:
898 if (!wdev->current_bss)
899 return -ENOLINK;
900 break;
901 case NL80211_IFTYPE_UNSPECIFIED:
902 case NL80211_IFTYPE_OCB:
903 case NL80211_IFTYPE_MONITOR:
904 case NL80211_IFTYPE_P2P_DEVICE:
905 case NL80211_IFTYPE_WDS:
906 case NUM_NL80211_IFTYPES:
907 return -EINVAL;
908 }
909
910 return 0;
911 }
912
913 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
914 struct nlattr *tb)
915 {
916 struct ieee80211_channel *chan;
917
918 if (tb == NULL)
919 return NULL;
920 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
921 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
922 return NULL;
923 return chan;
924 }
925
926 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
927 {
928 struct nlattr *nl_modes = nla_nest_start(msg, attr);
929 int i;
930
931 if (!nl_modes)
932 goto nla_put_failure;
933
934 i = 0;
935 while (ifmodes) {
936 if ((ifmodes & 1) && nla_put_flag(msg, i))
937 goto nla_put_failure;
938 ifmodes >>= 1;
939 i++;
940 }
941
942 nla_nest_end(msg, nl_modes);
943 return 0;
944
945 nla_put_failure:
946 return -ENOBUFS;
947 }
948
949 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
950 struct sk_buff *msg,
951 bool large)
952 {
953 struct nlattr *nl_combis;
954 int i, j;
955
956 nl_combis = nla_nest_start(msg,
957 NL80211_ATTR_INTERFACE_COMBINATIONS);
958 if (!nl_combis)
959 goto nla_put_failure;
960
961 for (i = 0; i < wiphy->n_iface_combinations; i++) {
962 const struct ieee80211_iface_combination *c;
963 struct nlattr *nl_combi, *nl_limits;
964
965 c = &wiphy->iface_combinations[i];
966
967 nl_combi = nla_nest_start(msg, i + 1);
968 if (!nl_combi)
969 goto nla_put_failure;
970
971 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
972 if (!nl_limits)
973 goto nla_put_failure;
974
975 for (j = 0; j < c->n_limits; j++) {
976 struct nlattr *nl_limit;
977
978 nl_limit = nla_nest_start(msg, j + 1);
979 if (!nl_limit)
980 goto nla_put_failure;
981 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
982 c->limits[j].max))
983 goto nla_put_failure;
984 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
985 c->limits[j].types))
986 goto nla_put_failure;
987 nla_nest_end(msg, nl_limit);
988 }
989
990 nla_nest_end(msg, nl_limits);
991
992 if (c->beacon_int_infra_match &&
993 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
994 goto nla_put_failure;
995 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
996 c->num_different_channels) ||
997 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
998 c->max_interfaces))
999 goto nla_put_failure;
1000 if (large &&
1001 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1002 c->radar_detect_widths) ||
1003 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1004 c->radar_detect_regions)))
1005 goto nla_put_failure;
1006
1007 nla_nest_end(msg, nl_combi);
1008 }
1009
1010 nla_nest_end(msg, nl_combis);
1011
1012 return 0;
1013 nla_put_failure:
1014 return -ENOBUFS;
1015 }
1016
1017 #ifdef CONFIG_PM
1018 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1019 struct sk_buff *msg)
1020 {
1021 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1022 struct nlattr *nl_tcp;
1023
1024 if (!tcp)
1025 return 0;
1026
1027 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1028 if (!nl_tcp)
1029 return -ENOBUFS;
1030
1031 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1032 tcp->data_payload_max))
1033 return -ENOBUFS;
1034
1035 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1036 tcp->data_payload_max))
1037 return -ENOBUFS;
1038
1039 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1040 return -ENOBUFS;
1041
1042 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1043 sizeof(*tcp->tok), tcp->tok))
1044 return -ENOBUFS;
1045
1046 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1047 tcp->data_interval_max))
1048 return -ENOBUFS;
1049
1050 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1051 tcp->wake_payload_max))
1052 return -ENOBUFS;
1053
1054 nla_nest_end(msg, nl_tcp);
1055 return 0;
1056 }
1057
1058 static int nl80211_send_wowlan(struct sk_buff *msg,
1059 struct cfg80211_registered_device *rdev,
1060 bool large)
1061 {
1062 struct nlattr *nl_wowlan;
1063
1064 if (!rdev->wiphy.wowlan)
1065 return 0;
1066
1067 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1068 if (!nl_wowlan)
1069 return -ENOBUFS;
1070
1071 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1075 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1077 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1079 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1080 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1081 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1082 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1083 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1084 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1085 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1086 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1087 return -ENOBUFS;
1088
1089 if (rdev->wiphy.wowlan->n_patterns) {
1090 struct nl80211_pattern_support pat = {
1091 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1092 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1093 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1094 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1095 };
1096
1097 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1098 sizeof(pat), &pat))
1099 return -ENOBUFS;
1100 }
1101
1102 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1103 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1104 rdev->wiphy.wowlan->max_nd_match_sets))
1105 return -ENOBUFS;
1106
1107 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1108 return -ENOBUFS;
1109
1110 nla_nest_end(msg, nl_wowlan);
1111
1112 return 0;
1113 }
1114 #endif
1115
1116 static int nl80211_send_coalesce(struct sk_buff *msg,
1117 struct cfg80211_registered_device *rdev)
1118 {
1119 struct nl80211_coalesce_rule_support rule;
1120
1121 if (!rdev->wiphy.coalesce)
1122 return 0;
1123
1124 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1125 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1126 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1127 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1128 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1129 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1130
1131 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1132 return -ENOBUFS;
1133
1134 return 0;
1135 }
1136
1137 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1138 struct ieee80211_supported_band *sband)
1139 {
1140 struct nlattr *nl_rates, *nl_rate;
1141 struct ieee80211_rate *rate;
1142 int i;
1143
1144 /* add HT info */
1145 if (sband->ht_cap.ht_supported &&
1146 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1147 sizeof(sband->ht_cap.mcs),
1148 &sband->ht_cap.mcs) ||
1149 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1150 sband->ht_cap.cap) ||
1151 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1152 sband->ht_cap.ampdu_factor) ||
1153 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1154 sband->ht_cap.ampdu_density)))
1155 return -ENOBUFS;
1156
1157 /* add VHT info */
1158 if (sband->vht_cap.vht_supported &&
1159 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1160 sizeof(sband->vht_cap.vht_mcs),
1161 &sband->vht_cap.vht_mcs) ||
1162 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1163 sband->vht_cap.cap)))
1164 return -ENOBUFS;
1165
1166 /* add bitrates */
1167 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1168 if (!nl_rates)
1169 return -ENOBUFS;
1170
1171 for (i = 0; i < sband->n_bitrates; i++) {
1172 nl_rate = nla_nest_start(msg, i);
1173 if (!nl_rate)
1174 return -ENOBUFS;
1175
1176 rate = &sband->bitrates[i];
1177 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1178 rate->bitrate))
1179 return -ENOBUFS;
1180 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1181 nla_put_flag(msg,
1182 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1183 return -ENOBUFS;
1184
1185 nla_nest_end(msg, nl_rate);
1186 }
1187
1188 nla_nest_end(msg, nl_rates);
1189
1190 return 0;
1191 }
1192
1193 static int
1194 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1195 const struct ieee80211_txrx_stypes *mgmt_stypes)
1196 {
1197 u16 stypes;
1198 struct nlattr *nl_ftypes, *nl_ifs;
1199 enum nl80211_iftype ift;
1200 int i;
1201
1202 if (!mgmt_stypes)
1203 return 0;
1204
1205 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1206 if (!nl_ifs)
1207 return -ENOBUFS;
1208
1209 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1210 nl_ftypes = nla_nest_start(msg, ift);
1211 if (!nl_ftypes)
1212 return -ENOBUFS;
1213 i = 0;
1214 stypes = mgmt_stypes[ift].tx;
1215 while (stypes) {
1216 if ((stypes & 1) &&
1217 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1218 (i << 4) | IEEE80211_FTYPE_MGMT))
1219 return -ENOBUFS;
1220 stypes >>= 1;
1221 i++;
1222 }
1223 nla_nest_end(msg, nl_ftypes);
1224 }
1225
1226 nla_nest_end(msg, nl_ifs);
1227
1228 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1229 if (!nl_ifs)
1230 return -ENOBUFS;
1231
1232 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1233 nl_ftypes = nla_nest_start(msg, ift);
1234 if (!nl_ftypes)
1235 return -ENOBUFS;
1236 i = 0;
1237 stypes = mgmt_stypes[ift].rx;
1238 while (stypes) {
1239 if ((stypes & 1) &&
1240 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1241 (i << 4) | IEEE80211_FTYPE_MGMT))
1242 return -ENOBUFS;
1243 stypes >>= 1;
1244 i++;
1245 }
1246 nla_nest_end(msg, nl_ftypes);
1247 }
1248 nla_nest_end(msg, nl_ifs);
1249
1250 return 0;
1251 }
1252
1253 struct nl80211_dump_wiphy_state {
1254 s64 filter_wiphy;
1255 long start;
1256 long split_start, band_start, chan_start;
1257 bool split;
1258 };
1259
1260 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1261 enum nl80211_commands cmd,
1262 struct sk_buff *msg, u32 portid, u32 seq,
1263 int flags, struct nl80211_dump_wiphy_state *state)
1264 {
1265 void *hdr;
1266 struct nlattr *nl_bands, *nl_band;
1267 struct nlattr *nl_freqs, *nl_freq;
1268 struct nlattr *nl_cmds;
1269 enum ieee80211_band band;
1270 struct ieee80211_channel *chan;
1271 int i;
1272 const struct ieee80211_txrx_stypes *mgmt_stypes =
1273 rdev->wiphy.mgmt_stypes;
1274 u32 features;
1275
1276 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1277 if (!hdr)
1278 return -ENOBUFS;
1279
1280 if (WARN_ON(!state))
1281 return -EINVAL;
1282
1283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1284 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1285 wiphy_name(&rdev->wiphy)) ||
1286 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1287 cfg80211_rdev_list_generation))
1288 goto nla_put_failure;
1289
1290 if (cmd != NL80211_CMD_NEW_WIPHY)
1291 goto finish;
1292
1293 switch (state->split_start) {
1294 case 0:
1295 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1296 rdev->wiphy.retry_short) ||
1297 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1298 rdev->wiphy.retry_long) ||
1299 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1300 rdev->wiphy.frag_threshold) ||
1301 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1302 rdev->wiphy.rts_threshold) ||
1303 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1304 rdev->wiphy.coverage_class) ||
1305 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1306 rdev->wiphy.max_scan_ssids) ||
1307 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1308 rdev->wiphy.max_sched_scan_ssids) ||
1309 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1310 rdev->wiphy.max_scan_ie_len) ||
1311 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1312 rdev->wiphy.max_sched_scan_ie_len) ||
1313 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1314 rdev->wiphy.max_match_sets) ||
1315 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1316 rdev->wiphy.max_sched_scan_plans) ||
1317 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1318 rdev->wiphy.max_sched_scan_plan_interval) ||
1319 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1320 rdev->wiphy.max_sched_scan_plan_iterations))
1321 goto nla_put_failure;
1322
1323 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1324 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1325 goto nla_put_failure;
1326 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1327 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1328 goto nla_put_failure;
1329 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1330 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1331 goto nla_put_failure;
1332 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1333 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1334 goto nla_put_failure;
1335 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1336 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1337 goto nla_put_failure;
1338 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1339 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1340 goto nla_put_failure;
1341 state->split_start++;
1342 if (state->split)
1343 break;
1344 case 1:
1345 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1346 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1347 rdev->wiphy.cipher_suites))
1348 goto nla_put_failure;
1349
1350 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1351 rdev->wiphy.max_num_pmkids))
1352 goto nla_put_failure;
1353
1354 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1355 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1356 goto nla_put_failure;
1357
1358 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1359 rdev->wiphy.available_antennas_tx) ||
1360 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1361 rdev->wiphy.available_antennas_rx))
1362 goto nla_put_failure;
1363
1364 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1365 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1366 rdev->wiphy.probe_resp_offload))
1367 goto nla_put_failure;
1368
1369 if ((rdev->wiphy.available_antennas_tx ||
1370 rdev->wiphy.available_antennas_rx) &&
1371 rdev->ops->get_antenna) {
1372 u32 tx_ant = 0, rx_ant = 0;
1373 int res;
1374 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1375 if (!res) {
1376 if (nla_put_u32(msg,
1377 NL80211_ATTR_WIPHY_ANTENNA_TX,
1378 tx_ant) ||
1379 nla_put_u32(msg,
1380 NL80211_ATTR_WIPHY_ANTENNA_RX,
1381 rx_ant))
1382 goto nla_put_failure;
1383 }
1384 }
1385
1386 state->split_start++;
1387 if (state->split)
1388 break;
1389 case 2:
1390 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1391 rdev->wiphy.interface_modes))
1392 goto nla_put_failure;
1393 state->split_start++;
1394 if (state->split)
1395 break;
1396 case 3:
1397 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1398 if (!nl_bands)
1399 goto nla_put_failure;
1400
1401 for (band = state->band_start;
1402 band < IEEE80211_NUM_BANDS; band++) {
1403 struct ieee80211_supported_band *sband;
1404
1405 sband = rdev->wiphy.bands[band];
1406
1407 if (!sband)
1408 continue;
1409
1410 nl_band = nla_nest_start(msg, band);
1411 if (!nl_band)
1412 goto nla_put_failure;
1413
1414 switch (state->chan_start) {
1415 case 0:
1416 if (nl80211_send_band_rateinfo(msg, sband))
1417 goto nla_put_failure;
1418 state->chan_start++;
1419 if (state->split)
1420 break;
1421 default:
1422 /* add frequencies */
1423 nl_freqs = nla_nest_start(
1424 msg, NL80211_BAND_ATTR_FREQS);
1425 if (!nl_freqs)
1426 goto nla_put_failure;
1427
1428 for (i = state->chan_start - 1;
1429 i < sband->n_channels;
1430 i++) {
1431 nl_freq = nla_nest_start(msg, i);
1432 if (!nl_freq)
1433 goto nla_put_failure;
1434
1435 chan = &sband->channels[i];
1436
1437 if (nl80211_msg_put_channel(
1438 msg, chan,
1439 state->split))
1440 goto nla_put_failure;
1441
1442 nla_nest_end(msg, nl_freq);
1443 if (state->split)
1444 break;
1445 }
1446 if (i < sband->n_channels)
1447 state->chan_start = i + 2;
1448 else
1449 state->chan_start = 0;
1450 nla_nest_end(msg, nl_freqs);
1451 }
1452
1453 nla_nest_end(msg, nl_band);
1454
1455 if (state->split) {
1456 /* start again here */
1457 if (state->chan_start)
1458 band--;
1459 break;
1460 }
1461 }
1462 nla_nest_end(msg, nl_bands);
1463
1464 if (band < IEEE80211_NUM_BANDS)
1465 state->band_start = band + 1;
1466 else
1467 state->band_start = 0;
1468
1469 /* if bands & channels are done, continue outside */
1470 if (state->band_start == 0 && state->chan_start == 0)
1471 state->split_start++;
1472 if (state->split)
1473 break;
1474 case 4:
1475 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1476 if (!nl_cmds)
1477 goto nla_put_failure;
1478
1479 i = 0;
1480 #define CMD(op, n) \
1481 do { \
1482 if (rdev->ops->op) { \
1483 i++; \
1484 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1485 goto nla_put_failure; \
1486 } \
1487 } while (0)
1488
1489 CMD(add_virtual_intf, NEW_INTERFACE);
1490 CMD(change_virtual_intf, SET_INTERFACE);
1491 CMD(add_key, NEW_KEY);
1492 CMD(start_ap, START_AP);
1493 CMD(add_station, NEW_STATION);
1494 CMD(add_mpath, NEW_MPATH);
1495 CMD(update_mesh_config, SET_MESH_CONFIG);
1496 CMD(change_bss, SET_BSS);
1497 CMD(auth, AUTHENTICATE);
1498 CMD(assoc, ASSOCIATE);
1499 CMD(deauth, DEAUTHENTICATE);
1500 CMD(disassoc, DISASSOCIATE);
1501 CMD(join_ibss, JOIN_IBSS);
1502 CMD(join_mesh, JOIN_MESH);
1503 CMD(set_pmksa, SET_PMKSA);
1504 CMD(del_pmksa, DEL_PMKSA);
1505 CMD(flush_pmksa, FLUSH_PMKSA);
1506 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1507 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1508 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1509 CMD(mgmt_tx, FRAME);
1510 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1511 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1512 i++;
1513 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1514 goto nla_put_failure;
1515 }
1516 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1517 rdev->ops->join_mesh) {
1518 i++;
1519 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1520 goto nla_put_failure;
1521 }
1522 CMD(set_wds_peer, SET_WDS_PEER);
1523 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1524 CMD(tdls_mgmt, TDLS_MGMT);
1525 CMD(tdls_oper, TDLS_OPER);
1526 }
1527 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1528 CMD(sched_scan_start, START_SCHED_SCAN);
1529 CMD(probe_client, PROBE_CLIENT);
1530 CMD(set_noack_map, SET_NOACK_MAP);
1531 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1532 i++;
1533 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1534 goto nla_put_failure;
1535 }
1536 CMD(start_p2p_device, START_P2P_DEVICE);
1537 CMD(set_mcast_rate, SET_MCAST_RATE);
1538 #ifdef CONFIG_NL80211_TESTMODE
1539 CMD(testmode_cmd, TESTMODE);
1540 #endif
1541 if (state->split) {
1542 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1543 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1544 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1545 CMD(channel_switch, CHANNEL_SWITCH);
1546 CMD(set_qos_map, SET_QOS_MAP);
1547 if (rdev->wiphy.features &
1548 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1549 CMD(add_tx_ts, ADD_TX_TS);
1550 }
1551 /* add into the if now */
1552 #undef CMD
1553
1554 if (rdev->ops->connect || rdev->ops->auth) {
1555 i++;
1556 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1557 goto nla_put_failure;
1558 }
1559
1560 if (rdev->ops->disconnect || rdev->ops->deauth) {
1561 i++;
1562 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1563 goto nla_put_failure;
1564 }
1565
1566 nla_nest_end(msg, nl_cmds);
1567 state->split_start++;
1568 if (state->split)
1569 break;
1570 case 5:
1571 if (rdev->ops->remain_on_channel &&
1572 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1573 nla_put_u32(msg,
1574 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1575 rdev->wiphy.max_remain_on_channel_duration))
1576 goto nla_put_failure;
1577
1578 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1579 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1580 goto nla_put_failure;
1581
1582 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1583 goto nla_put_failure;
1584 state->split_start++;
1585 if (state->split)
1586 break;
1587 case 6:
1588 #ifdef CONFIG_PM
1589 if (nl80211_send_wowlan(msg, rdev, state->split))
1590 goto nla_put_failure;
1591 state->split_start++;
1592 if (state->split)
1593 break;
1594 #else
1595 state->split_start++;
1596 #endif
1597 case 7:
1598 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1599 rdev->wiphy.software_iftypes))
1600 goto nla_put_failure;
1601
1602 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1603 state->split))
1604 goto nla_put_failure;
1605
1606 state->split_start++;
1607 if (state->split)
1608 break;
1609 case 8:
1610 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1611 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1612 rdev->wiphy.ap_sme_capa))
1613 goto nla_put_failure;
1614
1615 features = rdev->wiphy.features;
1616 /*
1617 * We can only add the per-channel limit information if the
1618 * dump is split, otherwise it makes it too big. Therefore
1619 * only advertise it in that case.
1620 */
1621 if (state->split)
1622 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1623 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1624 goto nla_put_failure;
1625
1626 if (rdev->wiphy.ht_capa_mod_mask &&
1627 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1628 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1629 rdev->wiphy.ht_capa_mod_mask))
1630 goto nla_put_failure;
1631
1632 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1633 rdev->wiphy.max_acl_mac_addrs &&
1634 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1635 rdev->wiphy.max_acl_mac_addrs))
1636 goto nla_put_failure;
1637
1638 /*
1639 * Any information below this point is only available to
1640 * applications that can deal with it being split. This
1641 * helps ensure that newly added capabilities don't break
1642 * older tools by overrunning their buffers.
1643 *
1644 * We still increment split_start so that in the split
1645 * case we'll continue with more data in the next round,
1646 * but break unconditionally so unsplit data stops here.
1647 */
1648 state->split_start++;
1649 break;
1650 case 9:
1651 if (rdev->wiphy.extended_capabilities &&
1652 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1653 rdev->wiphy.extended_capabilities_len,
1654 rdev->wiphy.extended_capabilities) ||
1655 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1656 rdev->wiphy.extended_capabilities_len,
1657 rdev->wiphy.extended_capabilities_mask)))
1658 goto nla_put_failure;
1659
1660 if (rdev->wiphy.vht_capa_mod_mask &&
1661 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1662 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1663 rdev->wiphy.vht_capa_mod_mask))
1664 goto nla_put_failure;
1665
1666 state->split_start++;
1667 break;
1668 case 10:
1669 if (nl80211_send_coalesce(msg, rdev))
1670 goto nla_put_failure;
1671
1672 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1673 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1674 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1675 goto nla_put_failure;
1676
1677 if (rdev->wiphy.max_ap_assoc_sta &&
1678 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1679 rdev->wiphy.max_ap_assoc_sta))
1680 goto nla_put_failure;
1681
1682 state->split_start++;
1683 break;
1684 case 11:
1685 if (rdev->wiphy.n_vendor_commands) {
1686 const struct nl80211_vendor_cmd_info *info;
1687 struct nlattr *nested;
1688
1689 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1690 if (!nested)
1691 goto nla_put_failure;
1692
1693 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1694 info = &rdev->wiphy.vendor_commands[i].info;
1695 if (nla_put(msg, i + 1, sizeof(*info), info))
1696 goto nla_put_failure;
1697 }
1698 nla_nest_end(msg, nested);
1699 }
1700
1701 if (rdev->wiphy.n_vendor_events) {
1702 const struct nl80211_vendor_cmd_info *info;
1703 struct nlattr *nested;
1704
1705 nested = nla_nest_start(msg,
1706 NL80211_ATTR_VENDOR_EVENTS);
1707 if (!nested)
1708 goto nla_put_failure;
1709
1710 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1711 info = &rdev->wiphy.vendor_events[i];
1712 if (nla_put(msg, i + 1, sizeof(*info), info))
1713 goto nla_put_failure;
1714 }
1715 nla_nest_end(msg, nested);
1716 }
1717 state->split_start++;
1718 break;
1719 case 12:
1720 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1721 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1722 rdev->wiphy.max_num_csa_counters))
1723 goto nla_put_failure;
1724
1725 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1726 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1727 goto nla_put_failure;
1728
1729 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1730 sizeof(rdev->wiphy.ext_features),
1731 rdev->wiphy.ext_features))
1732 goto nla_put_failure;
1733
1734 /* done */
1735 state->split_start = 0;
1736 break;
1737 }
1738 finish:
1739 genlmsg_end(msg, hdr);
1740 return 0;
1741
1742 nla_put_failure:
1743 genlmsg_cancel(msg, hdr);
1744 return -EMSGSIZE;
1745 }
1746
1747 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1748 struct netlink_callback *cb,
1749 struct nl80211_dump_wiphy_state *state)
1750 {
1751 struct nlattr **tb = nl80211_fam.attrbuf;
1752 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1753 tb, nl80211_fam.maxattr, nl80211_policy);
1754 /* ignore parse errors for backward compatibility */
1755 if (ret)
1756 return 0;
1757
1758 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1759 if (tb[NL80211_ATTR_WIPHY])
1760 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1761 if (tb[NL80211_ATTR_WDEV])
1762 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1763 if (tb[NL80211_ATTR_IFINDEX]) {
1764 struct net_device *netdev;
1765 struct cfg80211_registered_device *rdev;
1766 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1767
1768 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1769 if (!netdev)
1770 return -ENODEV;
1771 if (netdev->ieee80211_ptr) {
1772 rdev = wiphy_to_rdev(
1773 netdev->ieee80211_ptr->wiphy);
1774 state->filter_wiphy = rdev->wiphy_idx;
1775 }
1776 }
1777
1778 return 0;
1779 }
1780
1781 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1782 {
1783 int idx = 0, ret;
1784 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1785 struct cfg80211_registered_device *rdev;
1786
1787 rtnl_lock();
1788 if (!state) {
1789 state = kzalloc(sizeof(*state), GFP_KERNEL);
1790 if (!state) {
1791 rtnl_unlock();
1792 return -ENOMEM;
1793 }
1794 state->filter_wiphy = -1;
1795 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1796 if (ret) {
1797 kfree(state);
1798 rtnl_unlock();
1799 return ret;
1800 }
1801 cb->args[0] = (long)state;
1802 }
1803
1804 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1805 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1806 continue;
1807 if (++idx <= state->start)
1808 continue;
1809 if (state->filter_wiphy != -1 &&
1810 state->filter_wiphy != rdev->wiphy_idx)
1811 continue;
1812 /* attempt to fit multiple wiphy data chunks into the skb */
1813 do {
1814 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1815 skb,
1816 NETLINK_CB(cb->skb).portid,
1817 cb->nlh->nlmsg_seq,
1818 NLM_F_MULTI, state);
1819 if (ret < 0) {
1820 /*
1821 * If sending the wiphy data didn't fit (ENOBUFS
1822 * or EMSGSIZE returned), this SKB is still
1823 * empty (so it's not too big because another
1824 * wiphy dataset is already in the skb) and
1825 * we've not tried to adjust the dump allocation
1826 * yet ... then adjust the alloc size to be
1827 * bigger, and return 1 but with the empty skb.
1828 * This results in an empty message being RX'ed
1829 * in userspace, but that is ignored.
1830 *
1831 * We can then retry with the larger buffer.
1832 */
1833 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1834 !skb->len && !state->split &&
1835 cb->min_dump_alloc < 4096) {
1836 cb->min_dump_alloc = 4096;
1837 state->split_start = 0;
1838 rtnl_unlock();
1839 return 1;
1840 }
1841 idx--;
1842 break;
1843 }
1844 } while (state->split_start > 0);
1845 break;
1846 }
1847 rtnl_unlock();
1848
1849 state->start = idx;
1850
1851 return skb->len;
1852 }
1853
1854 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1855 {
1856 kfree((void *)cb->args[0]);
1857 return 0;
1858 }
1859
1860 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1861 {
1862 struct sk_buff *msg;
1863 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1864 struct nl80211_dump_wiphy_state state = {};
1865
1866 msg = nlmsg_new(4096, GFP_KERNEL);
1867 if (!msg)
1868 return -ENOMEM;
1869
1870 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1871 info->snd_portid, info->snd_seq, 0,
1872 &state) < 0) {
1873 nlmsg_free(msg);
1874 return -ENOBUFS;
1875 }
1876
1877 return genlmsg_reply(msg, info);
1878 }
1879
1880 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1881 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1882 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1883 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1884 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1885 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1886 };
1887
1888 static int parse_txq_params(struct nlattr *tb[],
1889 struct ieee80211_txq_params *txq_params)
1890 {
1891 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1892 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1893 !tb[NL80211_TXQ_ATTR_AIFS])
1894 return -EINVAL;
1895
1896 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1897 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1898 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1899 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1900 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1901
1902 if (txq_params->ac >= NL80211_NUM_ACS)
1903 return -EINVAL;
1904
1905 return 0;
1906 }
1907
1908 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1909 {
1910 /*
1911 * You can only set the channel explicitly for WDS interfaces,
1912 * all others have their channel managed via their respective
1913 * "establish a connection" command (connect, join, ...)
1914 *
1915 * For AP/GO and mesh mode, the channel can be set with the
1916 * channel userspace API, but is only stored and passed to the
1917 * low-level driver when the AP starts or the mesh is joined.
1918 * This is for backward compatibility, userspace can also give
1919 * the channel in the start-ap or join-mesh commands instead.
1920 *
1921 * Monitors are special as they are normally slaved to
1922 * whatever else is going on, so they have their own special
1923 * operation to set the monitor channel if possible.
1924 */
1925 return !wdev ||
1926 wdev->iftype == NL80211_IFTYPE_AP ||
1927 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1928 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1929 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1930 }
1931
1932 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1933 struct genl_info *info,
1934 struct cfg80211_chan_def *chandef)
1935 {
1936 u32 control_freq;
1937
1938 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1939 return -EINVAL;
1940
1941 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1942
1943 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1944 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1945 chandef->center_freq1 = control_freq;
1946 chandef->center_freq2 = 0;
1947
1948 /* Primary channel not allowed */
1949 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1950 return -EINVAL;
1951
1952 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1953 enum nl80211_channel_type chantype;
1954
1955 chantype = nla_get_u32(
1956 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1957
1958 switch (chantype) {
1959 case NL80211_CHAN_NO_HT:
1960 case NL80211_CHAN_HT20:
1961 case NL80211_CHAN_HT40PLUS:
1962 case NL80211_CHAN_HT40MINUS:
1963 cfg80211_chandef_create(chandef, chandef->chan,
1964 chantype);
1965 break;
1966 default:
1967 return -EINVAL;
1968 }
1969 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1970 chandef->width =
1971 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1972 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1973 chandef->center_freq1 =
1974 nla_get_u32(
1975 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1976 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1977 chandef->center_freq2 =
1978 nla_get_u32(
1979 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1980 }
1981
1982 if (!cfg80211_chandef_valid(chandef))
1983 return -EINVAL;
1984
1985 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1986 IEEE80211_CHAN_DISABLED))
1987 return -EINVAL;
1988
1989 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1990 chandef->width == NL80211_CHAN_WIDTH_10) &&
1991 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1992 return -EINVAL;
1993
1994 return 0;
1995 }
1996
1997 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1998 struct net_device *dev,
1999 struct genl_info *info)
2000 {
2001 struct cfg80211_chan_def chandef;
2002 int result;
2003 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2004 struct wireless_dev *wdev = NULL;
2005
2006 if (dev)
2007 wdev = dev->ieee80211_ptr;
2008 if (!nl80211_can_set_dev_channel(wdev))
2009 return -EOPNOTSUPP;
2010 if (wdev)
2011 iftype = wdev->iftype;
2012
2013 result = nl80211_parse_chandef(rdev, info, &chandef);
2014 if (result)
2015 return result;
2016
2017 switch (iftype) {
2018 case NL80211_IFTYPE_AP:
2019 case NL80211_IFTYPE_P2P_GO:
2020 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2021 iftype)) {
2022 result = -EINVAL;
2023 break;
2024 }
2025 if (wdev->beacon_interval) {
2026 if (!dev || !rdev->ops->set_ap_chanwidth ||
2027 !(rdev->wiphy.features &
2028 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2029 result = -EBUSY;
2030 break;
2031 }
2032
2033 /* Only allow dynamic channel width changes */
2034 if (chandef.chan != wdev->preset_chandef.chan) {
2035 result = -EBUSY;
2036 break;
2037 }
2038 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2039 if (result)
2040 break;
2041 }
2042 wdev->preset_chandef = chandef;
2043 result = 0;
2044 break;
2045 case NL80211_IFTYPE_MESH_POINT:
2046 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2047 break;
2048 case NL80211_IFTYPE_MONITOR:
2049 result = cfg80211_set_monitor_channel(rdev, &chandef);
2050 break;
2051 default:
2052 result = -EINVAL;
2053 }
2054
2055 return result;
2056 }
2057
2058 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2059 {
2060 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2061 struct net_device *netdev = info->user_ptr[1];
2062
2063 return __nl80211_set_channel(rdev, netdev, info);
2064 }
2065
2066 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2067 {
2068 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2069 struct net_device *dev = info->user_ptr[1];
2070 struct wireless_dev *wdev = dev->ieee80211_ptr;
2071 const u8 *bssid;
2072
2073 if (!info->attrs[NL80211_ATTR_MAC])
2074 return -EINVAL;
2075
2076 if (netif_running(dev))
2077 return -EBUSY;
2078
2079 if (!rdev->ops->set_wds_peer)
2080 return -EOPNOTSUPP;
2081
2082 if (wdev->iftype != NL80211_IFTYPE_WDS)
2083 return -EOPNOTSUPP;
2084
2085 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2086 return rdev_set_wds_peer(rdev, dev, bssid);
2087 }
2088
2089
2090 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2091 {
2092 struct cfg80211_registered_device *rdev;
2093 struct net_device *netdev = NULL;
2094 struct wireless_dev *wdev;
2095 int result = 0, rem_txq_params = 0;
2096 struct nlattr *nl_txq_params;
2097 u32 changed;
2098 u8 retry_short = 0, retry_long = 0;
2099 u32 frag_threshold = 0, rts_threshold = 0;
2100 u8 coverage_class = 0;
2101
2102 ASSERT_RTNL();
2103
2104 /*
2105 * Try to find the wiphy and netdev. Normally this
2106 * function shouldn't need the netdev, but this is
2107 * done for backward compatibility -- previously
2108 * setting the channel was done per wiphy, but now
2109 * it is per netdev. Previous userland like hostapd
2110 * also passed a netdev to set_wiphy, so that it is
2111 * possible to let that go to the right netdev!
2112 */
2113
2114 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2115 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2116
2117 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2118 if (netdev && netdev->ieee80211_ptr)
2119 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2120 else
2121 netdev = NULL;
2122 }
2123
2124 if (!netdev) {
2125 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2126 info->attrs);
2127 if (IS_ERR(rdev))
2128 return PTR_ERR(rdev);
2129 wdev = NULL;
2130 netdev = NULL;
2131 result = 0;
2132 } else
2133 wdev = netdev->ieee80211_ptr;
2134
2135 /*
2136 * end workaround code, by now the rdev is available
2137 * and locked, and wdev may or may not be NULL.
2138 */
2139
2140 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2141 result = cfg80211_dev_rename(
2142 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2143
2144 if (result)
2145 return result;
2146
2147 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2148 struct ieee80211_txq_params txq_params;
2149 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2150
2151 if (!rdev->ops->set_txq_params)
2152 return -EOPNOTSUPP;
2153
2154 if (!netdev)
2155 return -EINVAL;
2156
2157 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2158 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2159 return -EINVAL;
2160
2161 if (!netif_running(netdev))
2162 return -ENETDOWN;
2163
2164 nla_for_each_nested(nl_txq_params,
2165 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2166 rem_txq_params) {
2167 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2168 nla_data(nl_txq_params),
2169 nla_len(nl_txq_params),
2170 txq_params_policy);
2171 if (result)
2172 return result;
2173 result = parse_txq_params(tb, &txq_params);
2174 if (result)
2175 return result;
2176
2177 result = rdev_set_txq_params(rdev, netdev,
2178 &txq_params);
2179 if (result)
2180 return result;
2181 }
2182 }
2183
2184 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2185 result = __nl80211_set_channel(
2186 rdev,
2187 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2188 info);
2189 if (result)
2190 return result;
2191 }
2192
2193 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2194 struct wireless_dev *txp_wdev = wdev;
2195 enum nl80211_tx_power_setting type;
2196 int idx, mbm = 0;
2197
2198 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2199 txp_wdev = NULL;
2200
2201 if (!rdev->ops->set_tx_power)
2202 return -EOPNOTSUPP;
2203
2204 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2205 type = nla_get_u32(info->attrs[idx]);
2206
2207 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2208 (type != NL80211_TX_POWER_AUTOMATIC))
2209 return -EINVAL;
2210
2211 if (type != NL80211_TX_POWER_AUTOMATIC) {
2212 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2213 mbm = nla_get_u32(info->attrs[idx]);
2214 }
2215
2216 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2217 if (result)
2218 return result;
2219 }
2220
2221 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2222 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2223 u32 tx_ant, rx_ant;
2224 if ((!rdev->wiphy.available_antennas_tx &&
2225 !rdev->wiphy.available_antennas_rx) ||
2226 !rdev->ops->set_antenna)
2227 return -EOPNOTSUPP;
2228
2229 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2230 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2231
2232 /* reject antenna configurations which don't match the
2233 * available antenna masks, except for the "all" mask */
2234 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2235 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2236 return -EINVAL;
2237
2238 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2239 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2240
2241 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2242 if (result)
2243 return result;
2244 }
2245
2246 changed = 0;
2247
2248 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2249 retry_short = nla_get_u8(
2250 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2251 if (retry_short == 0)
2252 return -EINVAL;
2253
2254 changed |= WIPHY_PARAM_RETRY_SHORT;
2255 }
2256
2257 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2258 retry_long = nla_get_u8(
2259 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2260 if (retry_long == 0)
2261 return -EINVAL;
2262
2263 changed |= WIPHY_PARAM_RETRY_LONG;
2264 }
2265
2266 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2267 frag_threshold = nla_get_u32(
2268 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2269 if (frag_threshold < 256)
2270 return -EINVAL;
2271
2272 if (frag_threshold != (u32) -1) {
2273 /*
2274 * Fragments (apart from the last one) are required to
2275 * have even length. Make the fragmentation code
2276 * simpler by stripping LSB should someone try to use
2277 * odd threshold value.
2278 */
2279 frag_threshold &= ~0x1;
2280 }
2281 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2282 }
2283
2284 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2285 rts_threshold = nla_get_u32(
2286 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2287 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2288 }
2289
2290 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2291 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2292 return -EINVAL;
2293
2294 coverage_class = nla_get_u8(
2295 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2296 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2297 }
2298
2299 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2300 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2301 return -EOPNOTSUPP;
2302
2303 changed |= WIPHY_PARAM_DYN_ACK;
2304 }
2305
2306 if (changed) {
2307 u8 old_retry_short, old_retry_long;
2308 u32 old_frag_threshold, old_rts_threshold;
2309 u8 old_coverage_class;
2310
2311 if (!rdev->ops->set_wiphy_params)
2312 return -EOPNOTSUPP;
2313
2314 old_retry_short = rdev->wiphy.retry_short;
2315 old_retry_long = rdev->wiphy.retry_long;
2316 old_frag_threshold = rdev->wiphy.frag_threshold;
2317 old_rts_threshold = rdev->wiphy.rts_threshold;
2318 old_coverage_class = rdev->wiphy.coverage_class;
2319
2320 if (changed & WIPHY_PARAM_RETRY_SHORT)
2321 rdev->wiphy.retry_short = retry_short;
2322 if (changed & WIPHY_PARAM_RETRY_LONG)
2323 rdev->wiphy.retry_long = retry_long;
2324 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2325 rdev->wiphy.frag_threshold = frag_threshold;
2326 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2327 rdev->wiphy.rts_threshold = rts_threshold;
2328 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2329 rdev->wiphy.coverage_class = coverage_class;
2330
2331 result = rdev_set_wiphy_params(rdev, changed);
2332 if (result) {
2333 rdev->wiphy.retry_short = old_retry_short;
2334 rdev->wiphy.retry_long = old_retry_long;
2335 rdev->wiphy.frag_threshold = old_frag_threshold;
2336 rdev->wiphy.rts_threshold = old_rts_threshold;
2337 rdev->wiphy.coverage_class = old_coverage_class;
2338 return result;
2339 }
2340 }
2341 return 0;
2342 }
2343
2344 static inline u64 wdev_id(struct wireless_dev *wdev)
2345 {
2346 return (u64)wdev->identifier |
2347 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2348 }
2349
2350 static int nl80211_send_chandef(struct sk_buff *msg,
2351 const struct cfg80211_chan_def *chandef)
2352 {
2353 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2354 return -EINVAL;
2355
2356 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2357 chandef->chan->center_freq))
2358 return -ENOBUFS;
2359 switch (chandef->width) {
2360 case NL80211_CHAN_WIDTH_20_NOHT:
2361 case NL80211_CHAN_WIDTH_20:
2362 case NL80211_CHAN_WIDTH_40:
2363 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2364 cfg80211_get_chandef_type(chandef)))
2365 return -ENOBUFS;
2366 break;
2367 default:
2368 break;
2369 }
2370 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2371 return -ENOBUFS;
2372 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2373 return -ENOBUFS;
2374 if (chandef->center_freq2 &&
2375 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2376 return -ENOBUFS;
2377 return 0;
2378 }
2379
2380 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2381 struct cfg80211_registered_device *rdev,
2382 struct wireless_dev *wdev, bool removal)
2383 {
2384 struct net_device *dev = wdev->netdev;
2385 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2386 void *hdr;
2387
2388 if (removal)
2389 cmd = NL80211_CMD_DEL_INTERFACE;
2390
2391 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2392 if (!hdr)
2393 return -1;
2394
2395 if (dev &&
2396 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2397 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2398 goto nla_put_failure;
2399
2400 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2401 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2402 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2403 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2404 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2405 rdev->devlist_generation ^
2406 (cfg80211_rdev_list_generation << 2)))
2407 goto nla_put_failure;
2408
2409 if (rdev->ops->get_channel) {
2410 int ret;
2411 struct cfg80211_chan_def chandef;
2412
2413 ret = rdev_get_channel(rdev, wdev, &chandef);
2414 if (ret == 0) {
2415 if (nl80211_send_chandef(msg, &chandef))
2416 goto nla_put_failure;
2417 }
2418 }
2419
2420 if (rdev->ops->get_tx_power) {
2421 int dbm, ret;
2422
2423 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2424 if (ret == 0 &&
2425 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2426 DBM_TO_MBM(dbm)))
2427 goto nla_put_failure;
2428 }
2429
2430 if (wdev->ssid_len) {
2431 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2432 goto nla_put_failure;
2433 }
2434
2435 genlmsg_end(msg, hdr);
2436 return 0;
2437
2438 nla_put_failure:
2439 genlmsg_cancel(msg, hdr);
2440 return -EMSGSIZE;
2441 }
2442
2443 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2444 {
2445 int wp_idx = 0;
2446 int if_idx = 0;
2447 int wp_start = cb->args[0];
2448 int if_start = cb->args[1];
2449 struct cfg80211_registered_device *rdev;
2450 struct wireless_dev *wdev;
2451
2452 rtnl_lock();
2453 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2454 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2455 continue;
2456 if (wp_idx < wp_start) {
2457 wp_idx++;
2458 continue;
2459 }
2460 if_idx = 0;
2461
2462 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2463 if (if_idx < if_start) {
2464 if_idx++;
2465 continue;
2466 }
2467 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2468 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2469 rdev, wdev, false) < 0) {
2470 goto out;
2471 }
2472 if_idx++;
2473 }
2474
2475 wp_idx++;
2476 }
2477 out:
2478 rtnl_unlock();
2479
2480 cb->args[0] = wp_idx;
2481 cb->args[1] = if_idx;
2482
2483 return skb->len;
2484 }
2485
2486 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2487 {
2488 struct sk_buff *msg;
2489 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2490 struct wireless_dev *wdev = info->user_ptr[1];
2491
2492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2493 if (!msg)
2494 return -ENOMEM;
2495
2496 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2497 rdev, wdev, false) < 0) {
2498 nlmsg_free(msg);
2499 return -ENOBUFS;
2500 }
2501
2502 return genlmsg_reply(msg, info);
2503 }
2504
2505 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2506 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2507 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2508 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2509 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2510 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2511 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2512 };
2513
2514 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2515 {
2516 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2517 int flag;
2518
2519 *mntrflags = 0;
2520
2521 if (!nla)
2522 return -EINVAL;
2523
2524 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2525 nla, mntr_flags_policy))
2526 return -EINVAL;
2527
2528 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2529 if (flags[flag])
2530 *mntrflags |= (1<<flag);
2531
2532 return 0;
2533 }
2534
2535 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2536 struct net_device *netdev, u8 use_4addr,
2537 enum nl80211_iftype iftype)
2538 {
2539 if (!use_4addr) {
2540 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2541 return -EBUSY;
2542 return 0;
2543 }
2544
2545 switch (iftype) {
2546 case NL80211_IFTYPE_AP_VLAN:
2547 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2548 return 0;
2549 break;
2550 case NL80211_IFTYPE_STATION:
2551 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2552 return 0;
2553 break;
2554 default:
2555 break;
2556 }
2557
2558 return -EOPNOTSUPP;
2559 }
2560
2561 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2562 {
2563 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2564 struct vif_params params;
2565 int err;
2566 enum nl80211_iftype otype, ntype;
2567 struct net_device *dev = info->user_ptr[1];
2568 u32 _flags, *flags = NULL;
2569 bool change = false;
2570
2571 memset(&params, 0, sizeof(params));
2572
2573 otype = ntype = dev->ieee80211_ptr->iftype;
2574
2575 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2576 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2577 if (otype != ntype)
2578 change = true;
2579 if (ntype > NL80211_IFTYPE_MAX)
2580 return -EINVAL;
2581 }
2582
2583 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2584 struct wireless_dev *wdev = dev->ieee80211_ptr;
2585
2586 if (ntype != NL80211_IFTYPE_MESH_POINT)
2587 return -EINVAL;
2588 if (netif_running(dev))
2589 return -EBUSY;
2590
2591 wdev_lock(wdev);
2592 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2593 IEEE80211_MAX_MESH_ID_LEN);
2594 wdev->mesh_id_up_len =
2595 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2596 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2597 wdev->mesh_id_up_len);
2598 wdev_unlock(wdev);
2599 }
2600
2601 if (info->attrs[NL80211_ATTR_4ADDR]) {
2602 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2603 change = true;
2604 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2605 if (err)
2606 return err;
2607 } else {
2608 params.use_4addr = -1;
2609 }
2610
2611 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2612 if (ntype != NL80211_IFTYPE_MONITOR)
2613 return -EINVAL;
2614 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2615 &_flags);
2616 if (err)
2617 return err;
2618
2619 flags = &_flags;
2620 change = true;
2621 }
2622
2623 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2624 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2625 return -EOPNOTSUPP;
2626
2627 if (change)
2628 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2629 else
2630 err = 0;
2631
2632 if (!err && params.use_4addr != -1)
2633 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2634
2635 return err;
2636 }
2637
2638 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2639 {
2640 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2641 struct vif_params params;
2642 struct wireless_dev *wdev;
2643 struct sk_buff *msg, *event;
2644 int err;
2645 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2646 u32 flags;
2647
2648 /* to avoid failing a new interface creation due to pending removal */
2649 cfg80211_destroy_ifaces(rdev);
2650
2651 memset(&params, 0, sizeof(params));
2652
2653 if (!info->attrs[NL80211_ATTR_IFNAME])
2654 return -EINVAL;
2655
2656 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2657 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2658 if (type > NL80211_IFTYPE_MAX)
2659 return -EINVAL;
2660 }
2661
2662 if (!rdev->ops->add_virtual_intf ||
2663 !(rdev->wiphy.interface_modes & (1 << type)))
2664 return -EOPNOTSUPP;
2665
2666 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2667 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2668 info->attrs[NL80211_ATTR_MAC]) {
2669 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2670 ETH_ALEN);
2671 if (!is_valid_ether_addr(params.macaddr))
2672 return -EADDRNOTAVAIL;
2673 }
2674
2675 if (info->attrs[NL80211_ATTR_4ADDR]) {
2676 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2677 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2678 if (err)
2679 return err;
2680 }
2681
2682 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2683 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2684 &flags);
2685
2686 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2687 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2688 return -EOPNOTSUPP;
2689
2690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2691 if (!msg)
2692 return -ENOMEM;
2693
2694 wdev = rdev_add_virtual_intf(rdev,
2695 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2696 NET_NAME_USER, type, err ? NULL : &flags,
2697 &params);
2698 if (WARN_ON(!wdev)) {
2699 nlmsg_free(msg);
2700 return -EPROTO;
2701 } else if (IS_ERR(wdev)) {
2702 nlmsg_free(msg);
2703 return PTR_ERR(wdev);
2704 }
2705
2706 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2707 wdev->owner_nlportid = info->snd_portid;
2708
2709 switch (type) {
2710 case NL80211_IFTYPE_MESH_POINT:
2711 if (!info->attrs[NL80211_ATTR_MESH_ID])
2712 break;
2713 wdev_lock(wdev);
2714 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2715 IEEE80211_MAX_MESH_ID_LEN);
2716 wdev->mesh_id_up_len =
2717 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2718 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2719 wdev->mesh_id_up_len);
2720 wdev_unlock(wdev);
2721 break;
2722 case NL80211_IFTYPE_P2P_DEVICE:
2723 /*
2724 * P2P Device doesn't have a netdev, so doesn't go
2725 * through the netdev notifier and must be added here
2726 */
2727 mutex_init(&wdev->mtx);
2728 INIT_LIST_HEAD(&wdev->event_list);
2729 spin_lock_init(&wdev->event_lock);
2730 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2731 spin_lock_init(&wdev->mgmt_registrations_lock);
2732
2733 wdev->identifier = ++rdev->wdev_id;
2734 list_add_rcu(&wdev->list, &rdev->wdev_list);
2735 rdev->devlist_generation++;
2736 break;
2737 default:
2738 break;
2739 }
2740
2741 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2742 rdev, wdev, false) < 0) {
2743 nlmsg_free(msg);
2744 return -ENOBUFS;
2745 }
2746
2747 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2748 if (event) {
2749 if (nl80211_send_iface(event, 0, 0, 0,
2750 rdev, wdev, false) < 0) {
2751 nlmsg_free(event);
2752 goto out;
2753 }
2754
2755 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2756 event, 0, NL80211_MCGRP_CONFIG,
2757 GFP_KERNEL);
2758 }
2759
2760 out:
2761 return genlmsg_reply(msg, info);
2762 }
2763
2764 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2765 {
2766 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2767 struct wireless_dev *wdev = info->user_ptr[1];
2768 struct sk_buff *msg;
2769 int status;
2770
2771 if (!rdev->ops->del_virtual_intf)
2772 return -EOPNOTSUPP;
2773
2774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2775 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2776 nlmsg_free(msg);
2777 msg = NULL;
2778 }
2779
2780 /*
2781 * If we remove a wireless device without a netdev then clear
2782 * user_ptr[1] so that nl80211_post_doit won't dereference it
2783 * to check if it needs to do dev_put(). Otherwise it crashes
2784 * since the wdev has been freed, unlike with a netdev where
2785 * we need the dev_put() for the netdev to really be freed.
2786 */
2787 if (!wdev->netdev)
2788 info->user_ptr[1] = NULL;
2789
2790 status = rdev_del_virtual_intf(rdev, wdev);
2791 if (status >= 0 && msg)
2792 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2793 msg, 0, NL80211_MCGRP_CONFIG,
2794 GFP_KERNEL);
2795 else
2796 nlmsg_free(msg);
2797
2798 return status;
2799 }
2800
2801 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2802 {
2803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2804 struct net_device *dev = info->user_ptr[1];
2805 u16 noack_map;
2806
2807 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2808 return -EINVAL;
2809
2810 if (!rdev->ops->set_noack_map)
2811 return -EOPNOTSUPP;
2812
2813 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2814
2815 return rdev_set_noack_map(rdev, dev, noack_map);
2816 }
2817
2818 struct get_key_cookie {
2819 struct sk_buff *msg;
2820 int error;
2821 int idx;
2822 };
2823
2824 static void get_key_callback(void *c, struct key_params *params)
2825 {
2826 struct nlattr *key;
2827 struct get_key_cookie *cookie = c;
2828
2829 if ((params->key &&
2830 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2831 params->key_len, params->key)) ||
2832 (params->seq &&
2833 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2834 params->seq_len, params->seq)) ||
2835 (params->cipher &&
2836 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2837 params->cipher)))
2838 goto nla_put_failure;
2839
2840 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2841 if (!key)
2842 goto nla_put_failure;
2843
2844 if ((params->key &&
2845 nla_put(cookie->msg, NL80211_KEY_DATA,
2846 params->key_len, params->key)) ||
2847 (params->seq &&
2848 nla_put(cookie->msg, NL80211_KEY_SEQ,
2849 params->seq_len, params->seq)) ||
2850 (params->cipher &&
2851 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2852 params->cipher)))
2853 goto nla_put_failure;
2854
2855 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2856 goto nla_put_failure;
2857
2858 nla_nest_end(cookie->msg, key);
2859
2860 return;
2861 nla_put_failure:
2862 cookie->error = 1;
2863 }
2864
2865 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2866 {
2867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2868 int err;
2869 struct net_device *dev = info->user_ptr[1];
2870 u8 key_idx = 0;
2871 const u8 *mac_addr = NULL;
2872 bool pairwise;
2873 struct get_key_cookie cookie = {
2874 .error = 0,
2875 };
2876 void *hdr;
2877 struct sk_buff *msg;
2878
2879 if (info->attrs[NL80211_ATTR_KEY_IDX])
2880 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2881
2882 if (key_idx > 5)
2883 return -EINVAL;
2884
2885 if (info->attrs[NL80211_ATTR_MAC])
2886 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2887
2888 pairwise = !!mac_addr;
2889 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2890 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2891 if (kt >= NUM_NL80211_KEYTYPES)
2892 return -EINVAL;
2893 if (kt != NL80211_KEYTYPE_GROUP &&
2894 kt != NL80211_KEYTYPE_PAIRWISE)
2895 return -EINVAL;
2896 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2897 }
2898
2899 if (!rdev->ops->get_key)
2900 return -EOPNOTSUPP;
2901
2902 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2903 return -ENOENT;
2904
2905 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2906 if (!msg)
2907 return -ENOMEM;
2908
2909 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2910 NL80211_CMD_NEW_KEY);
2911 if (!hdr)
2912 goto nla_put_failure;
2913
2914 cookie.msg = msg;
2915 cookie.idx = key_idx;
2916
2917 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2918 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2919 goto nla_put_failure;
2920 if (mac_addr &&
2921 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2922 goto nla_put_failure;
2923
2924 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2925 get_key_callback);
2926
2927 if (err)
2928 goto free_msg;
2929
2930 if (cookie.error)
2931 goto nla_put_failure;
2932
2933 genlmsg_end(msg, hdr);
2934 return genlmsg_reply(msg, info);
2935
2936 nla_put_failure:
2937 err = -ENOBUFS;
2938 free_msg:
2939 nlmsg_free(msg);
2940 return err;
2941 }
2942
2943 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2944 {
2945 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2946 struct key_parse key;
2947 int err;
2948 struct net_device *dev = info->user_ptr[1];
2949
2950 err = nl80211_parse_key(info, &key);
2951 if (err)
2952 return err;
2953
2954 if (key.idx < 0)
2955 return -EINVAL;
2956
2957 /* only support setting default key */
2958 if (!key.def && !key.defmgmt)
2959 return -EINVAL;
2960
2961 wdev_lock(dev->ieee80211_ptr);
2962
2963 if (key.def) {
2964 if (!rdev->ops->set_default_key) {
2965 err = -EOPNOTSUPP;
2966 goto out;
2967 }
2968
2969 err = nl80211_key_allowed(dev->ieee80211_ptr);
2970 if (err)
2971 goto out;
2972
2973 err = rdev_set_default_key(rdev, dev, key.idx,
2974 key.def_uni, key.def_multi);
2975
2976 if (err)
2977 goto out;
2978
2979 #ifdef CONFIG_CFG80211_WEXT
2980 dev->ieee80211_ptr->wext.default_key = key.idx;
2981 #endif
2982 } else {
2983 if (key.def_uni || !key.def_multi) {
2984 err = -EINVAL;
2985 goto out;
2986 }
2987
2988 if (!rdev->ops->set_default_mgmt_key) {
2989 err = -EOPNOTSUPP;
2990 goto out;
2991 }
2992
2993 err = nl80211_key_allowed(dev->ieee80211_ptr);
2994 if (err)
2995 goto out;
2996
2997 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2998 if (err)
2999 goto out;
3000
3001 #ifdef CONFIG_CFG80211_WEXT
3002 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3003 #endif
3004 }
3005
3006 out:
3007 wdev_unlock(dev->ieee80211_ptr);
3008
3009 return err;
3010 }
3011
3012 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3013 {
3014 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3015 int err;
3016 struct net_device *dev = info->user_ptr[1];
3017 struct key_parse key;
3018 const u8 *mac_addr = NULL;
3019
3020 err = nl80211_parse_key(info, &key);
3021 if (err)
3022 return err;
3023
3024 if (!key.p.key)
3025 return -EINVAL;
3026
3027 if (info->attrs[NL80211_ATTR_MAC])
3028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3029
3030 if (key.type == -1) {
3031 if (mac_addr)
3032 key.type = NL80211_KEYTYPE_PAIRWISE;
3033 else
3034 key.type = NL80211_KEYTYPE_GROUP;
3035 }
3036
3037 /* for now */
3038 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3039 key.type != NL80211_KEYTYPE_GROUP)
3040 return -EINVAL;
3041
3042 if (!rdev->ops->add_key)
3043 return -EOPNOTSUPP;
3044
3045 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3046 key.type == NL80211_KEYTYPE_PAIRWISE,
3047 mac_addr))
3048 return -EINVAL;
3049
3050 wdev_lock(dev->ieee80211_ptr);
3051 err = nl80211_key_allowed(dev->ieee80211_ptr);
3052 if (!err)
3053 err = rdev_add_key(rdev, dev, key.idx,
3054 key.type == NL80211_KEYTYPE_PAIRWISE,
3055 mac_addr, &key.p);
3056 wdev_unlock(dev->ieee80211_ptr);
3057
3058 return err;
3059 }
3060
3061 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3062 {
3063 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3064 int err;
3065 struct net_device *dev = info->user_ptr[1];
3066 u8 *mac_addr = NULL;
3067 struct key_parse key;
3068
3069 err = nl80211_parse_key(info, &key);
3070 if (err)
3071 return err;
3072
3073 if (info->attrs[NL80211_ATTR_MAC])
3074 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3075
3076 if (key.type == -1) {
3077 if (mac_addr)
3078 key.type = NL80211_KEYTYPE_PAIRWISE;
3079 else
3080 key.type = NL80211_KEYTYPE_GROUP;
3081 }
3082
3083 /* for now */
3084 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3085 key.type != NL80211_KEYTYPE_GROUP)
3086 return -EINVAL;
3087
3088 if (!rdev->ops->del_key)
3089 return -EOPNOTSUPP;
3090
3091 wdev_lock(dev->ieee80211_ptr);
3092 err = nl80211_key_allowed(dev->ieee80211_ptr);
3093
3094 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3095 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3096 err = -ENOENT;
3097
3098 if (!err)
3099 err = rdev_del_key(rdev, dev, key.idx,
3100 key.type == NL80211_KEYTYPE_PAIRWISE,
3101 mac_addr);
3102
3103 #ifdef CONFIG_CFG80211_WEXT
3104 if (!err) {
3105 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3106 dev->ieee80211_ptr->wext.default_key = -1;
3107 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3108 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3109 }
3110 #endif
3111 wdev_unlock(dev->ieee80211_ptr);
3112
3113 return err;
3114 }
3115
3116 /* This function returns an error or the number of nested attributes */
3117 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3118 {
3119 struct nlattr *attr;
3120 int n_entries = 0, tmp;
3121
3122 nla_for_each_nested(attr, nl_attr, tmp) {
3123 if (nla_len(attr) != ETH_ALEN)
3124 return -EINVAL;
3125
3126 n_entries++;
3127 }
3128
3129 return n_entries;
3130 }
3131
3132 /*
3133 * This function parses ACL information and allocates memory for ACL data.
3134 * On successful return, the calling function is responsible to free the
3135 * ACL buffer returned by this function.
3136 */
3137 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3138 struct genl_info *info)
3139 {
3140 enum nl80211_acl_policy acl_policy;
3141 struct nlattr *attr;
3142 struct cfg80211_acl_data *acl;
3143 int i = 0, n_entries, tmp;
3144
3145 if (!wiphy->max_acl_mac_addrs)
3146 return ERR_PTR(-EOPNOTSUPP);
3147
3148 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3149 return ERR_PTR(-EINVAL);
3150
3151 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3152 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3153 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3154 return ERR_PTR(-EINVAL);
3155
3156 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3157 return ERR_PTR(-EINVAL);
3158
3159 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3160 if (n_entries < 0)
3161 return ERR_PTR(n_entries);
3162
3163 if (n_entries > wiphy->max_acl_mac_addrs)
3164 return ERR_PTR(-ENOTSUPP);
3165
3166 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3167 GFP_KERNEL);
3168 if (!acl)
3169 return ERR_PTR(-ENOMEM);
3170
3171 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3172 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3173 i++;
3174 }
3175
3176 acl->n_acl_entries = n_entries;
3177 acl->acl_policy = acl_policy;
3178
3179 return acl;
3180 }
3181
3182 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3183 {
3184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3185 struct net_device *dev = info->user_ptr[1];
3186 struct cfg80211_acl_data *acl;
3187 int err;
3188
3189 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3190 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3191 return -EOPNOTSUPP;
3192
3193 if (!dev->ieee80211_ptr->beacon_interval)
3194 return -EINVAL;
3195
3196 acl = parse_acl_data(&rdev->wiphy, info);
3197 if (IS_ERR(acl))
3198 return PTR_ERR(acl);
3199
3200 err = rdev_set_mac_acl(rdev, dev, acl);
3201
3202 kfree(acl);
3203
3204 return err;
3205 }
3206
3207 static int nl80211_parse_beacon(struct nlattr *attrs[],
3208 struct cfg80211_beacon_data *bcn)
3209 {
3210 bool haveinfo = false;
3211
3212 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3213 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3214 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3215 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3216 return -EINVAL;
3217
3218 memset(bcn, 0, sizeof(*bcn));
3219
3220 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3221 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3222 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3223 if (!bcn->head_len)
3224 return -EINVAL;
3225 haveinfo = true;
3226 }
3227
3228 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3229 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3230 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3231 haveinfo = true;
3232 }
3233
3234 if (!haveinfo)
3235 return -EINVAL;
3236
3237 if (attrs[NL80211_ATTR_IE]) {
3238 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3239 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3240 }
3241
3242 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3243 bcn->proberesp_ies =
3244 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3245 bcn->proberesp_ies_len =
3246 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3247 }
3248
3249 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3250 bcn->assocresp_ies =
3251 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3252 bcn->assocresp_ies_len =
3253 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3254 }
3255
3256 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3257 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3258 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3259 }
3260
3261 return 0;
3262 }
3263
3264 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3265 struct cfg80211_ap_settings *params)
3266 {
3267 struct wireless_dev *wdev;
3268 bool ret = false;
3269
3270 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3271 if (wdev->iftype != NL80211_IFTYPE_AP &&
3272 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3273 continue;
3274
3275 if (!wdev->preset_chandef.chan)
3276 continue;
3277
3278 params->chandef = wdev->preset_chandef;
3279 ret = true;
3280 break;
3281 }
3282
3283 return ret;
3284 }
3285
3286 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3287 enum nl80211_auth_type auth_type,
3288 enum nl80211_commands cmd)
3289 {
3290 if (auth_type > NL80211_AUTHTYPE_MAX)
3291 return false;
3292
3293 switch (cmd) {
3294 case NL80211_CMD_AUTHENTICATE:
3295 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3296 auth_type == NL80211_AUTHTYPE_SAE)
3297 return false;
3298 return true;
3299 case NL80211_CMD_CONNECT:
3300 case NL80211_CMD_START_AP:
3301 /* SAE not supported yet */
3302 if (auth_type == NL80211_AUTHTYPE_SAE)
3303 return false;
3304 return true;
3305 default:
3306 return false;
3307 }
3308 }
3309
3310 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3311 {
3312 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3313 struct net_device *dev = info->user_ptr[1];
3314 struct wireless_dev *wdev = dev->ieee80211_ptr;
3315 struct cfg80211_ap_settings params;
3316 int err;
3317
3318 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3319 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3320 return -EOPNOTSUPP;
3321
3322 if (!rdev->ops->start_ap)
3323 return -EOPNOTSUPP;
3324
3325 if (wdev->beacon_interval)
3326 return -EALREADY;
3327
3328 memset(&params, 0, sizeof(params));
3329
3330 /* these are required for START_AP */
3331 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3332 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3333 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3334 return -EINVAL;
3335
3336 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3337 if (err)
3338 return err;
3339
3340 params.beacon_interval =
3341 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3342 params.dtim_period =
3343 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3344
3345 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3346 if (err)
3347 return err;
3348
3349 /*
3350 * In theory, some of these attributes should be required here
3351 * but since they were not used when the command was originally
3352 * added, keep them optional for old user space programs to let
3353 * them continue to work with drivers that do not need the
3354 * additional information -- drivers must check!
3355 */
3356 if (info->attrs[NL80211_ATTR_SSID]) {
3357 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3358 params.ssid_len =
3359 nla_len(info->attrs[NL80211_ATTR_SSID]);
3360 if (params.ssid_len == 0 ||
3361 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3362 return -EINVAL;
3363 }
3364
3365 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3366 params.hidden_ssid = nla_get_u32(
3367 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3368 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3369 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3370 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3371 return -EINVAL;
3372 }
3373
3374 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3375
3376 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3377 params.auth_type = nla_get_u32(
3378 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3379 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3380 NL80211_CMD_START_AP))
3381 return -EINVAL;
3382 } else
3383 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3384
3385 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3386 NL80211_MAX_NR_CIPHER_SUITES);
3387 if (err)
3388 return err;
3389
3390 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3391 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3392 return -EOPNOTSUPP;
3393 params.inactivity_timeout = nla_get_u16(
3394 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3395 }
3396
3397 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3399 return -EINVAL;
3400 params.p2p_ctwindow =
3401 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3402 if (params.p2p_ctwindow > 127)
3403 return -EINVAL;
3404 if (params.p2p_ctwindow != 0 &&
3405 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3406 return -EINVAL;
3407 }
3408
3409 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3410 u8 tmp;
3411
3412 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3413 return -EINVAL;
3414 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3415 if (tmp > 1)
3416 return -EINVAL;
3417 params.p2p_opp_ps = tmp;
3418 if (params.p2p_opp_ps != 0 &&
3419 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3420 return -EINVAL;
3421 }
3422
3423 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3424 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3425 if (err)
3426 return err;
3427 } else if (wdev->preset_chandef.chan) {
3428 params.chandef = wdev->preset_chandef;
3429 } else if (!nl80211_get_ap_channel(rdev, &params))
3430 return -EINVAL;
3431
3432 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3433 wdev->iftype))
3434 return -EINVAL;
3435
3436 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3437 params.smps_mode =
3438 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3439 switch (params.smps_mode) {
3440 case NL80211_SMPS_OFF:
3441 break;
3442 case NL80211_SMPS_STATIC:
3443 if (!(rdev->wiphy.features &
3444 NL80211_FEATURE_STATIC_SMPS))
3445 return -EINVAL;
3446 break;
3447 case NL80211_SMPS_DYNAMIC:
3448 if (!(rdev->wiphy.features &
3449 NL80211_FEATURE_DYNAMIC_SMPS))
3450 return -EINVAL;
3451 break;
3452 default:
3453 return -EINVAL;
3454 }
3455 } else {
3456 params.smps_mode = NL80211_SMPS_OFF;
3457 }
3458
3459 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3460 params.acl = parse_acl_data(&rdev->wiphy, info);
3461 if (IS_ERR(params.acl))
3462 return PTR_ERR(params.acl);
3463 }
3464
3465 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3466 if (params.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ])
3467 return -EOPNOTSUPP;
3468
3469 wdev_lock(wdev);
3470 err = rdev_start_ap(rdev, dev, &params);
3471 if (!err) {
3472 wdev->preset_chandef = params.chandef;
3473 wdev->beacon_interval = params.beacon_interval;
3474 wdev->chandef = params.chandef;
3475 wdev->ssid_len = params.ssid_len;
3476 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3477 }
3478 wdev_unlock(wdev);
3479
3480 kfree(params.acl);
3481
3482 return err;
3483 }
3484
3485 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3486 {
3487 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3488 struct net_device *dev = info->user_ptr[1];
3489 struct wireless_dev *wdev = dev->ieee80211_ptr;
3490 struct cfg80211_beacon_data params;
3491 int err;
3492
3493 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3494 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3495 return -EOPNOTSUPP;
3496
3497 if (!rdev->ops->change_beacon)
3498 return -EOPNOTSUPP;
3499
3500 if (!wdev->beacon_interval)
3501 return -EINVAL;
3502
3503 err = nl80211_parse_beacon(info->attrs, &params);
3504 if (err)
3505 return err;
3506
3507 wdev_lock(wdev);
3508 err = rdev_change_beacon(rdev, dev, &params);
3509 wdev_unlock(wdev);
3510
3511 return err;
3512 }
3513
3514 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3515 {
3516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3517 struct net_device *dev = info->user_ptr[1];
3518
3519 return cfg80211_stop_ap(rdev, dev, false);
3520 }
3521
3522 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3523 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3524 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3525 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3526 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3527 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3528 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3529 };
3530
3531 static int parse_station_flags(struct genl_info *info,
3532 enum nl80211_iftype iftype,
3533 struct station_parameters *params)
3534 {
3535 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3536 struct nlattr *nla;
3537 int flag;
3538
3539 /*
3540 * Try parsing the new attribute first so userspace
3541 * can specify both for older kernels.
3542 */
3543 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3544 if (nla) {
3545 struct nl80211_sta_flag_update *sta_flags;
3546
3547 sta_flags = nla_data(nla);
3548 params->sta_flags_mask = sta_flags->mask;
3549 params->sta_flags_set = sta_flags->set;
3550 params->sta_flags_set &= params->sta_flags_mask;
3551 if ((params->sta_flags_mask |
3552 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3553 return -EINVAL;
3554 return 0;
3555 }
3556
3557 /* if present, parse the old attribute */
3558
3559 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3560 if (!nla)
3561 return 0;
3562
3563 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3564 nla, sta_flags_policy))
3565 return -EINVAL;
3566
3567 /*
3568 * Only allow certain flags for interface types so that
3569 * other attributes are silently ignored. Remember that
3570 * this is backward compatibility code with old userspace
3571 * and shouldn't be hit in other cases anyway.
3572 */
3573 switch (iftype) {
3574 case NL80211_IFTYPE_AP:
3575 case NL80211_IFTYPE_AP_VLAN:
3576 case NL80211_IFTYPE_P2P_GO:
3577 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3578 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3579 BIT(NL80211_STA_FLAG_WME) |
3580 BIT(NL80211_STA_FLAG_MFP);
3581 break;
3582 case NL80211_IFTYPE_P2P_CLIENT:
3583 case NL80211_IFTYPE_STATION:
3584 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3585 BIT(NL80211_STA_FLAG_TDLS_PEER);
3586 break;
3587 case NL80211_IFTYPE_MESH_POINT:
3588 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3589 BIT(NL80211_STA_FLAG_MFP) |
3590 BIT(NL80211_STA_FLAG_AUTHORIZED);
3591 default:
3592 return -EINVAL;
3593 }
3594
3595 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3596 if (flags[flag]) {
3597 params->sta_flags_set |= (1<<flag);
3598
3599 /* no longer support new API additions in old API */
3600 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3601 return -EINVAL;
3602 }
3603 }
3604
3605 return 0;
3606 }
3607
3608 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3609 int attr)
3610 {
3611 struct nlattr *rate;
3612 u32 bitrate;
3613 u16 bitrate_compat;
3614 enum nl80211_attrs rate_flg;
3615
3616 rate = nla_nest_start(msg, attr);
3617 if (!rate)
3618 return false;
3619
3620 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3621 bitrate = cfg80211_calculate_bitrate(info);
3622 /* report 16-bit bitrate only if we can */
3623 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3624 if (bitrate > 0 &&
3625 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3626 return false;
3627 if (bitrate_compat > 0 &&
3628 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3629 return false;
3630
3631 switch (info->bw) {
3632 case RATE_INFO_BW_5:
3633 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3634 break;
3635 case RATE_INFO_BW_10:
3636 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3637 break;
3638 default:
3639 WARN_ON(1);
3640 /* fall through */
3641 case RATE_INFO_BW_20:
3642 rate_flg = 0;
3643 break;
3644 case RATE_INFO_BW_40:
3645 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3646 break;
3647 case RATE_INFO_BW_80:
3648 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3649 break;
3650 case RATE_INFO_BW_160:
3651 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3652 break;
3653 }
3654
3655 if (rate_flg && nla_put_flag(msg, rate_flg))
3656 return false;
3657
3658 if (info->flags & RATE_INFO_FLAGS_MCS) {
3659 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3660 return false;
3661 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3662 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3663 return false;
3664 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3665 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3666 return false;
3667 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3668 return false;
3669 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3670 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3671 return false;
3672 }
3673
3674 nla_nest_end(msg, rate);
3675 return true;
3676 }
3677
3678 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3679 int id)
3680 {
3681 void *attr;
3682 int i = 0;
3683
3684 if (!mask)
3685 return true;
3686
3687 attr = nla_nest_start(msg, id);
3688 if (!attr)
3689 return false;
3690
3691 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3692 if (!(mask & BIT(i)))
3693 continue;
3694
3695 if (nla_put_u8(msg, i, signal[i]))
3696 return false;
3697 }
3698
3699 nla_nest_end(msg, attr);
3700
3701 return true;
3702 }
3703
3704 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3705 u32 seq, int flags,
3706 struct cfg80211_registered_device *rdev,
3707 struct net_device *dev,
3708 const u8 *mac_addr, struct station_info *sinfo)
3709 {
3710 void *hdr;
3711 struct nlattr *sinfoattr, *bss_param;
3712
3713 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3714 if (!hdr)
3715 return -1;
3716
3717 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3718 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3719 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3720 goto nla_put_failure;
3721
3722 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3723 if (!sinfoattr)
3724 goto nla_put_failure;
3725
3726 #define PUT_SINFO(attr, memb, type) do { \
3727 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3728 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3729 sinfo->memb)) \
3730 goto nla_put_failure; \
3731 } while (0)
3732
3733 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3734 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3735
3736 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3737 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3738 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3739 (u32)sinfo->rx_bytes))
3740 goto nla_put_failure;
3741
3742 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3743 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3744 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3745 (u32)sinfo->tx_bytes))
3746 goto nla_put_failure;
3747
3748 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3749 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3750 PUT_SINFO(LLID, llid, u16);
3751 PUT_SINFO(PLID, plid, u16);
3752 PUT_SINFO(PLINK_STATE, plink_state, u8);
3753
3754 switch (rdev->wiphy.signal_type) {
3755 case CFG80211_SIGNAL_TYPE_MBM:
3756 PUT_SINFO(SIGNAL, signal, u8);
3757 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3758 break;
3759 default:
3760 break;
3761 }
3762 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3763 if (!nl80211_put_signal(msg, sinfo->chains,
3764 sinfo->chain_signal,
3765 NL80211_STA_INFO_CHAIN_SIGNAL))
3766 goto nla_put_failure;
3767 }
3768 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3769 if (!nl80211_put_signal(msg, sinfo->chains,
3770 sinfo->chain_signal_avg,
3771 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3772 goto nla_put_failure;
3773 }
3774 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3775 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3776 NL80211_STA_INFO_TX_BITRATE))
3777 goto nla_put_failure;
3778 }
3779 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3780 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3781 NL80211_STA_INFO_RX_BITRATE))
3782 goto nla_put_failure;
3783 }
3784
3785 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3786 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3787 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3788 PUT_SINFO(TX_FAILED, tx_failed, u32);
3789 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3790 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3791 PUT_SINFO(LOCAL_PM, local_pm, u32);
3792 PUT_SINFO(PEER_PM, peer_pm, u32);
3793 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3794
3795 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3796 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3797 if (!bss_param)
3798 goto nla_put_failure;
3799
3800 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3801 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3802 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3803 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3804 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3805 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3806 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3807 sinfo->bss_param.dtim_period) ||
3808 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3809 sinfo->bss_param.beacon_interval))
3810 goto nla_put_failure;
3811
3812 nla_nest_end(msg, bss_param);
3813 }
3814 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3815 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3816 sizeof(struct nl80211_sta_flag_update),
3817 &sinfo->sta_flags))
3818 goto nla_put_failure;
3819
3820 PUT_SINFO(T_OFFSET, t_offset, u64);
3821 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3822 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3823 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3824
3825 #undef PUT_SINFO
3826
3827 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3828 struct nlattr *tidsattr;
3829 int tid;
3830
3831 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3832 if (!tidsattr)
3833 goto nla_put_failure;
3834
3835 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3836 struct cfg80211_tid_stats *tidstats;
3837 struct nlattr *tidattr;
3838
3839 tidstats = &sinfo->pertid[tid];
3840
3841 if (!tidstats->filled)
3842 continue;
3843
3844 tidattr = nla_nest_start(msg, tid + 1);
3845 if (!tidattr)
3846 goto nla_put_failure;
3847
3848 #define PUT_TIDVAL(attr, memb, type) do { \
3849 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3850 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3851 tidstats->memb)) \
3852 goto nla_put_failure; \
3853 } while (0)
3854
3855 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3856 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3857 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3858 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3859
3860 #undef PUT_TIDVAL
3861 nla_nest_end(msg, tidattr);
3862 }
3863
3864 nla_nest_end(msg, tidsattr);
3865 }
3866
3867 nla_nest_end(msg, sinfoattr);
3868
3869 if (sinfo->assoc_req_ies_len &&
3870 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3871 sinfo->assoc_req_ies))
3872 goto nla_put_failure;
3873
3874 genlmsg_end(msg, hdr);
3875 return 0;
3876
3877 nla_put_failure:
3878 genlmsg_cancel(msg, hdr);
3879 return -EMSGSIZE;
3880 }
3881
3882 static int nl80211_dump_station(struct sk_buff *skb,
3883 struct netlink_callback *cb)
3884 {
3885 struct station_info sinfo;
3886 struct cfg80211_registered_device *rdev;
3887 struct wireless_dev *wdev;
3888 u8 mac_addr[ETH_ALEN];
3889 int sta_idx = cb->args[2];
3890 int err;
3891
3892 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3893 if (err)
3894 return err;
3895
3896 if (!wdev->netdev) {
3897 err = -EINVAL;
3898 goto out_err;
3899 }
3900
3901 if (!rdev->ops->dump_station) {
3902 err = -EOPNOTSUPP;
3903 goto out_err;
3904 }
3905
3906 while (1) {
3907 memset(&sinfo, 0, sizeof(sinfo));
3908 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3909 mac_addr, &sinfo);
3910 if (err == -ENOENT)
3911 break;
3912 if (err)
3913 goto out_err;
3914
3915 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3916 NETLINK_CB(cb->skb).portid,
3917 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3918 rdev, wdev->netdev, mac_addr,
3919 &sinfo) < 0)
3920 goto out;
3921
3922 sta_idx++;
3923 }
3924
3925
3926 out:
3927 cb->args[2] = sta_idx;
3928 err = skb->len;
3929 out_err:
3930 nl80211_finish_wdev_dump(rdev);
3931
3932 return err;
3933 }
3934
3935 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3936 {
3937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3938 struct net_device *dev = info->user_ptr[1];
3939 struct station_info sinfo;
3940 struct sk_buff *msg;
3941 u8 *mac_addr = NULL;
3942 int err;
3943
3944 memset(&sinfo, 0, sizeof(sinfo));
3945
3946 if (!info->attrs[NL80211_ATTR_MAC])
3947 return -EINVAL;
3948
3949 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3950
3951 if (!rdev->ops->get_station)
3952 return -EOPNOTSUPP;
3953
3954 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3955 if (err)
3956 return err;
3957
3958 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3959 if (!msg)
3960 return -ENOMEM;
3961
3962 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3963 info->snd_portid, info->snd_seq, 0,
3964 rdev, dev, mac_addr, &sinfo) < 0) {
3965 nlmsg_free(msg);
3966 return -ENOBUFS;
3967 }
3968
3969 return genlmsg_reply(msg, info);
3970 }
3971
3972 int cfg80211_check_station_change(struct wiphy *wiphy,
3973 struct station_parameters *params,
3974 enum cfg80211_station_type statype)
3975 {
3976 if (params->listen_interval != -1 &&
3977 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
3978 return -EINVAL;
3979
3980 if (params->aid &&
3981 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
3982 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
3983 return -EINVAL;
3984
3985 /* When you run into this, adjust the code below for the new flag */
3986 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3987
3988 switch (statype) {
3989 case CFG80211_STA_MESH_PEER_KERNEL:
3990 case CFG80211_STA_MESH_PEER_USER:
3991 /*
3992 * No ignoring the TDLS flag here -- the userspace mesh
3993 * code doesn't have the bug of including TDLS in the
3994 * mask everywhere.
3995 */
3996 if (params->sta_flags_mask &
3997 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3998 BIT(NL80211_STA_FLAG_MFP) |
3999 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4000 return -EINVAL;
4001 break;
4002 case CFG80211_STA_TDLS_PEER_SETUP:
4003 case CFG80211_STA_TDLS_PEER_ACTIVE:
4004 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4005 return -EINVAL;
4006 /* ignore since it can't change */
4007 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4008 break;
4009 default:
4010 /* disallow mesh-specific things */
4011 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4012 return -EINVAL;
4013 if (params->local_pm)
4014 return -EINVAL;
4015 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4016 return -EINVAL;
4017 }
4018
4019 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4020 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4021 /* TDLS can't be set, ... */
4022 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4023 return -EINVAL;
4024 /*
4025 * ... but don't bother the driver with it. This works around
4026 * a hostapd/wpa_supplicant issue -- it always includes the
4027 * TLDS_PEER flag in the mask even for AP mode.
4028 */
4029 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4030 }
4031
4032 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4033 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4034 /* reject other things that can't change */
4035 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4036 return -EINVAL;
4037 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4038 return -EINVAL;
4039 if (params->supported_rates)
4040 return -EINVAL;
4041 if (params->ext_capab || params->ht_capa || params->vht_capa)
4042 return -EINVAL;
4043 }
4044
4045 if (statype != CFG80211_STA_AP_CLIENT &&
4046 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4047 if (params->vlan)
4048 return -EINVAL;
4049 }
4050
4051 switch (statype) {
4052 case CFG80211_STA_AP_MLME_CLIENT:
4053 /* Use this only for authorizing/unauthorizing a station */
4054 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4055 return -EOPNOTSUPP;
4056 break;
4057 case CFG80211_STA_AP_CLIENT:
4058 case CFG80211_STA_AP_CLIENT_UNASSOC:
4059 /* accept only the listed bits */
4060 if (params->sta_flags_mask &
4061 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4062 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4063 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4064 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4065 BIT(NL80211_STA_FLAG_WME) |
4066 BIT(NL80211_STA_FLAG_MFP)))
4067 return -EINVAL;
4068
4069 /* but authenticated/associated only if driver handles it */
4070 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4071 params->sta_flags_mask &
4072 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4073 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4074 return -EINVAL;
4075 break;
4076 case CFG80211_STA_IBSS:
4077 case CFG80211_STA_AP_STA:
4078 /* reject any changes other than AUTHORIZED */
4079 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4080 return -EINVAL;
4081 break;
4082 case CFG80211_STA_TDLS_PEER_SETUP:
4083 /* reject any changes other than AUTHORIZED or WME */
4084 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4085 BIT(NL80211_STA_FLAG_WME)))
4086 return -EINVAL;
4087 /* force (at least) rates when authorizing */
4088 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4089 !params->supported_rates)
4090 return -EINVAL;
4091 break;
4092 case CFG80211_STA_TDLS_PEER_ACTIVE:
4093 /* reject any changes */
4094 return -EINVAL;
4095 case CFG80211_STA_MESH_PEER_KERNEL:
4096 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4097 return -EINVAL;
4098 break;
4099 case CFG80211_STA_MESH_PEER_USER:
4100 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4101 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4102 return -EINVAL;
4103 break;
4104 }
4105
4106 return 0;
4107 }
4108 EXPORT_SYMBOL(cfg80211_check_station_change);
4109
4110 /*
4111 * Get vlan interface making sure it is running and on the right wiphy.
4112 */
4113 static struct net_device *get_vlan(struct genl_info *info,
4114 struct cfg80211_registered_device *rdev)
4115 {
4116 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4117 struct net_device *v;
4118 int ret;
4119
4120 if (!vlanattr)
4121 return NULL;
4122
4123 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4124 if (!v)
4125 return ERR_PTR(-ENODEV);
4126
4127 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4128 ret = -EINVAL;
4129 goto error;
4130 }
4131
4132 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4133 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4134 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4135 ret = -EINVAL;
4136 goto error;
4137 }
4138
4139 if (!netif_running(v)) {
4140 ret = -ENETDOWN;
4141 goto error;
4142 }
4143
4144 return v;
4145 error:
4146 dev_put(v);
4147 return ERR_PTR(ret);
4148 }
4149
4150 static const struct nla_policy
4151 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4152 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4153 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4154 };
4155
4156 static int nl80211_parse_sta_wme(struct genl_info *info,
4157 struct station_parameters *params)
4158 {
4159 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4160 struct nlattr *nla;
4161 int err;
4162
4163 /* parse WME attributes if present */
4164 if (!info->attrs[NL80211_ATTR_STA_WME])
4165 return 0;
4166
4167 nla = info->attrs[NL80211_ATTR_STA_WME];
4168 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4169 nl80211_sta_wme_policy);
4170 if (err)
4171 return err;
4172
4173 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4174 params->uapsd_queues = nla_get_u8(
4175 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4176 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4177 return -EINVAL;
4178
4179 if (tb[NL80211_STA_WME_MAX_SP])
4180 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4181
4182 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4183 return -EINVAL;
4184
4185 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4186
4187 return 0;
4188 }
4189
4190 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4191 struct station_parameters *params)
4192 {
4193 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4194 params->supported_channels =
4195 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4196 params->supported_channels_len =
4197 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4198 /*
4199 * Need to include at least one (first channel, number of
4200 * channels) tuple for each subband, and must have proper
4201 * tuples for the rest of the data as well.
4202 */
4203 if (params->supported_channels_len < 2)
4204 return -EINVAL;
4205 if (params->supported_channels_len % 2)
4206 return -EINVAL;
4207 }
4208
4209 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4210 params->supported_oper_classes =
4211 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4212 params->supported_oper_classes_len =
4213 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4214 /*
4215 * The value of the Length field of the Supported Operating
4216 * Classes element is between 2 and 253.
4217 */
4218 if (params->supported_oper_classes_len < 2 ||
4219 params->supported_oper_classes_len > 253)
4220 return -EINVAL;
4221 }
4222 return 0;
4223 }
4224
4225 static int nl80211_set_station_tdls(struct genl_info *info,
4226 struct station_parameters *params)
4227 {
4228 int err;
4229 /* Dummy STA entry gets updated once the peer capabilities are known */
4230 if (info->attrs[NL80211_ATTR_PEER_AID])
4231 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4232 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4233 params->ht_capa =
4234 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4235 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4236 params->vht_capa =
4237 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4238
4239 err = nl80211_parse_sta_channel_info(info, params);
4240 if (err)
4241 return err;
4242
4243 return nl80211_parse_sta_wme(info, params);
4244 }
4245
4246 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4247 {
4248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4249 struct net_device *dev = info->user_ptr[1];
4250 struct station_parameters params;
4251 u8 *mac_addr;
4252 int err;
4253
4254 memset(&params, 0, sizeof(params));
4255
4256 if (!rdev->ops->change_station)
4257 return -EOPNOTSUPP;
4258
4259 /*
4260 * AID and listen_interval properties can be set only for unassociated
4261 * station. Include these parameters here and will check them in
4262 * cfg80211_check_station_change().
4263 */
4264 if (info->attrs[NL80211_ATTR_STA_AID])
4265 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4266
4267 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4268 params.listen_interval =
4269 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4270 else
4271 params.listen_interval = -1;
4272
4273 if (!info->attrs[NL80211_ATTR_MAC])
4274 return -EINVAL;
4275
4276 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4277
4278 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4279 params.supported_rates =
4280 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4281 params.supported_rates_len =
4282 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4283 }
4284
4285 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4286 params.capability =
4287 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4288 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4289 }
4290
4291 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4292 params.ext_capab =
4293 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4294 params.ext_capab_len =
4295 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4296 }
4297
4298 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4299 return -EINVAL;
4300
4301 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4302 params.plink_action =
4303 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4304 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4305 return -EINVAL;
4306 }
4307
4308 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4309 params.plink_state =
4310 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4311 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4312 return -EINVAL;
4313 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4314 }
4315
4316 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4317 enum nl80211_mesh_power_mode pm = nla_get_u32(
4318 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4319
4320 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4321 pm > NL80211_MESH_POWER_MAX)
4322 return -EINVAL;
4323
4324 params.local_pm = pm;
4325 }
4326
4327 /* Include parameters for TDLS peer (will check later) */
4328 err = nl80211_set_station_tdls(info, &params);
4329 if (err)
4330 return err;
4331
4332 params.vlan = get_vlan(info, rdev);
4333 if (IS_ERR(params.vlan))
4334 return PTR_ERR(params.vlan);
4335
4336 switch (dev->ieee80211_ptr->iftype) {
4337 case NL80211_IFTYPE_AP:
4338 case NL80211_IFTYPE_AP_VLAN:
4339 case NL80211_IFTYPE_P2P_GO:
4340 case NL80211_IFTYPE_P2P_CLIENT:
4341 case NL80211_IFTYPE_STATION:
4342 case NL80211_IFTYPE_ADHOC:
4343 case NL80211_IFTYPE_MESH_POINT:
4344 break;
4345 default:
4346 err = -EOPNOTSUPP;
4347 goto out_put_vlan;
4348 }
4349
4350 /* driver will call cfg80211_check_station_change() */
4351 err = rdev_change_station(rdev, dev, mac_addr, &params);
4352
4353 out_put_vlan:
4354 if (params.vlan)
4355 dev_put(params.vlan);
4356
4357 return err;
4358 }
4359
4360 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4361 {
4362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4363 int err;
4364 struct net_device *dev = info->user_ptr[1];
4365 struct station_parameters params;
4366 u8 *mac_addr = NULL;
4367 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4368 BIT(NL80211_STA_FLAG_ASSOCIATED);
4369
4370 memset(&params, 0, sizeof(params));
4371
4372 if (!rdev->ops->add_station)
4373 return -EOPNOTSUPP;
4374
4375 if (!info->attrs[NL80211_ATTR_MAC])
4376 return -EINVAL;
4377
4378 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4379 return -EINVAL;
4380
4381 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4382 return -EINVAL;
4383
4384 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4385 !info->attrs[NL80211_ATTR_PEER_AID])
4386 return -EINVAL;
4387
4388 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4389 params.supported_rates =
4390 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4391 params.supported_rates_len =
4392 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4393 params.listen_interval =
4394 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4395
4396 if (info->attrs[NL80211_ATTR_PEER_AID])
4397 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4398 else
4399 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4400 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4401 return -EINVAL;
4402
4403 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4404 params.capability =
4405 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4406 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4407 }
4408
4409 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4410 params.ext_capab =
4411 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4412 params.ext_capab_len =
4413 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4414 }
4415
4416 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4417 params.ht_capa =
4418 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4419
4420 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4421 params.vht_capa =
4422 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4423
4424 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4425 params.opmode_notif_used = true;
4426 params.opmode_notif =
4427 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4428 }
4429
4430 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4431 params.plink_action =
4432 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4433 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4434 return -EINVAL;
4435 }
4436
4437 err = nl80211_parse_sta_channel_info(info, &params);
4438 if (err)
4439 return err;
4440
4441 err = nl80211_parse_sta_wme(info, &params);
4442 if (err)
4443 return err;
4444
4445 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4446 return -EINVAL;
4447
4448 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4449 * as userspace might just pass through the capabilities from the IEs
4450 * directly, rather than enforcing this restriction and returning an
4451 * error in this case.
4452 */
4453 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4454 params.ht_capa = NULL;
4455 params.vht_capa = NULL;
4456 }
4457
4458 /* When you run into this, adjust the code below for the new flag */
4459 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4460
4461 switch (dev->ieee80211_ptr->iftype) {
4462 case NL80211_IFTYPE_AP:
4463 case NL80211_IFTYPE_AP_VLAN:
4464 case NL80211_IFTYPE_P2P_GO:
4465 /* ignore WME attributes if iface/sta is not capable */
4466 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4467 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4468 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4469
4470 /* TDLS peers cannot be added */
4471 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4472 info->attrs[NL80211_ATTR_PEER_AID])
4473 return -EINVAL;
4474 /* but don't bother the driver with it */
4475 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4476
4477 /* allow authenticated/associated only if driver handles it */
4478 if (!(rdev->wiphy.features &
4479 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4480 params.sta_flags_mask & auth_assoc)
4481 return -EINVAL;
4482
4483 /* Older userspace, or userspace wanting to be compatible with
4484 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4485 * and assoc flags in the mask, but assumes the station will be
4486 * added as associated anyway since this was the required driver
4487 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4488 * introduced.
4489 * In order to not bother drivers with this quirk in the API
4490 * set the flags in both the mask and set for new stations in
4491 * this case.
4492 */
4493 if (!(params.sta_flags_mask & auth_assoc)) {
4494 params.sta_flags_mask |= auth_assoc;
4495 params.sta_flags_set |= auth_assoc;
4496 }
4497
4498 /* must be last in here for error handling */
4499 params.vlan = get_vlan(info, rdev);
4500 if (IS_ERR(params.vlan))
4501 return PTR_ERR(params.vlan);
4502 break;
4503 case NL80211_IFTYPE_MESH_POINT:
4504 /* ignore uAPSD data */
4505 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4506
4507 /* associated is disallowed */
4508 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4509 return -EINVAL;
4510 /* TDLS peers cannot be added */
4511 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4512 info->attrs[NL80211_ATTR_PEER_AID])
4513 return -EINVAL;
4514 break;
4515 case NL80211_IFTYPE_STATION:
4516 case NL80211_IFTYPE_P2P_CLIENT:
4517 /* ignore uAPSD data */
4518 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4519
4520 /* these are disallowed */
4521 if (params.sta_flags_mask &
4522 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4523 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4524 return -EINVAL;
4525 /* Only TDLS peers can be added */
4526 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4527 return -EINVAL;
4528 /* Can only add if TDLS ... */
4529 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4530 return -EOPNOTSUPP;
4531 /* ... with external setup is supported */
4532 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4533 return -EOPNOTSUPP;
4534 /*
4535 * Older wpa_supplicant versions always mark the TDLS peer
4536 * as authorized, but it shouldn't yet be.
4537 */
4538 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4539 break;
4540 default:
4541 return -EOPNOTSUPP;
4542 }
4543
4544 /* be aware of params.vlan when changing code here */
4545
4546 err = rdev_add_station(rdev, dev, mac_addr, &params);
4547
4548 if (params.vlan)
4549 dev_put(params.vlan);
4550 return err;
4551 }
4552
4553 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4554 {
4555 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4556 struct net_device *dev = info->user_ptr[1];
4557 struct station_del_parameters params;
4558
4559 memset(&params, 0, sizeof(params));
4560
4561 if (info->attrs[NL80211_ATTR_MAC])
4562 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4563
4564 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4565 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4566 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4568 return -EINVAL;
4569
4570 if (!rdev->ops->del_station)
4571 return -EOPNOTSUPP;
4572
4573 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4574 params.subtype =
4575 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4576 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4577 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4578 return -EINVAL;
4579 } else {
4580 /* Default to Deauthentication frame */
4581 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4582 }
4583
4584 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4585 params.reason_code =
4586 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4587 if (params.reason_code == 0)
4588 return -EINVAL; /* 0 is reserved */
4589 } else {
4590 /* Default to reason code 2 */
4591 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4592 }
4593
4594 return rdev_del_station(rdev, dev, &params);
4595 }
4596
4597 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4598 int flags, struct net_device *dev,
4599 u8 *dst, u8 *next_hop,
4600 struct mpath_info *pinfo)
4601 {
4602 void *hdr;
4603 struct nlattr *pinfoattr;
4604
4605 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4606 if (!hdr)
4607 return -1;
4608
4609 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4610 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4611 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4612 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4613 goto nla_put_failure;
4614
4615 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4616 if (!pinfoattr)
4617 goto nla_put_failure;
4618 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4619 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4620 pinfo->frame_qlen))
4621 goto nla_put_failure;
4622 if (((pinfo->filled & MPATH_INFO_SN) &&
4623 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4624 ((pinfo->filled & MPATH_INFO_METRIC) &&
4625 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4626 pinfo->metric)) ||
4627 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4628 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4629 pinfo->exptime)) ||
4630 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4631 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4632 pinfo->flags)) ||
4633 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4634 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4635 pinfo->discovery_timeout)) ||
4636 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4637 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4638 pinfo->discovery_retries)))
4639 goto nla_put_failure;
4640
4641 nla_nest_end(msg, pinfoattr);
4642
4643 genlmsg_end(msg, hdr);
4644 return 0;
4645
4646 nla_put_failure:
4647 genlmsg_cancel(msg, hdr);
4648 return -EMSGSIZE;
4649 }
4650
4651 static int nl80211_dump_mpath(struct sk_buff *skb,
4652 struct netlink_callback *cb)
4653 {
4654 struct mpath_info pinfo;
4655 struct cfg80211_registered_device *rdev;
4656 struct wireless_dev *wdev;
4657 u8 dst[ETH_ALEN];
4658 u8 next_hop[ETH_ALEN];
4659 int path_idx = cb->args[2];
4660 int err;
4661
4662 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4663 if (err)
4664 return err;
4665
4666 if (!rdev->ops->dump_mpath) {
4667 err = -EOPNOTSUPP;
4668 goto out_err;
4669 }
4670
4671 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4672 err = -EOPNOTSUPP;
4673 goto out_err;
4674 }
4675
4676 while (1) {
4677 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4678 next_hop, &pinfo);
4679 if (err == -ENOENT)
4680 break;
4681 if (err)
4682 goto out_err;
4683
4684 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4685 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4686 wdev->netdev, dst, next_hop,
4687 &pinfo) < 0)
4688 goto out;
4689
4690 path_idx++;
4691 }
4692
4693
4694 out:
4695 cb->args[2] = path_idx;
4696 err = skb->len;
4697 out_err:
4698 nl80211_finish_wdev_dump(rdev);
4699 return err;
4700 }
4701
4702 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4703 {
4704 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4705 int err;
4706 struct net_device *dev = info->user_ptr[1];
4707 struct mpath_info pinfo;
4708 struct sk_buff *msg;
4709 u8 *dst = NULL;
4710 u8 next_hop[ETH_ALEN];
4711
4712 memset(&pinfo, 0, sizeof(pinfo));
4713
4714 if (!info->attrs[NL80211_ATTR_MAC])
4715 return -EINVAL;
4716
4717 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4718
4719 if (!rdev->ops->get_mpath)
4720 return -EOPNOTSUPP;
4721
4722 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4723 return -EOPNOTSUPP;
4724
4725 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4726 if (err)
4727 return err;
4728
4729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4730 if (!msg)
4731 return -ENOMEM;
4732
4733 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4734 dev, dst, next_hop, &pinfo) < 0) {
4735 nlmsg_free(msg);
4736 return -ENOBUFS;
4737 }
4738
4739 return genlmsg_reply(msg, info);
4740 }
4741
4742 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4743 {
4744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4745 struct net_device *dev = info->user_ptr[1];
4746 u8 *dst = NULL;
4747 u8 *next_hop = NULL;
4748
4749 if (!info->attrs[NL80211_ATTR_MAC])
4750 return -EINVAL;
4751
4752 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4753 return -EINVAL;
4754
4755 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4756 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4757
4758 if (!rdev->ops->change_mpath)
4759 return -EOPNOTSUPP;
4760
4761 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4762 return -EOPNOTSUPP;
4763
4764 return rdev_change_mpath(rdev, dev, dst, next_hop);
4765 }
4766
4767 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4768 {
4769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4770 struct net_device *dev = info->user_ptr[1];
4771 u8 *dst = NULL;
4772 u8 *next_hop = NULL;
4773
4774 if (!info->attrs[NL80211_ATTR_MAC])
4775 return -EINVAL;
4776
4777 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4778 return -EINVAL;
4779
4780 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4781 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4782
4783 if (!rdev->ops->add_mpath)
4784 return -EOPNOTSUPP;
4785
4786 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4787 return -EOPNOTSUPP;
4788
4789 return rdev_add_mpath(rdev, dev, dst, next_hop);
4790 }
4791
4792 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4793 {
4794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4795 struct net_device *dev = info->user_ptr[1];
4796 u8 *dst = NULL;
4797
4798 if (info->attrs[NL80211_ATTR_MAC])
4799 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4800
4801 if (!rdev->ops->del_mpath)
4802 return -EOPNOTSUPP;
4803
4804 return rdev_del_mpath(rdev, dev, dst);
4805 }
4806
4807 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4808 {
4809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4810 int err;
4811 struct net_device *dev = info->user_ptr[1];
4812 struct mpath_info pinfo;
4813 struct sk_buff *msg;
4814 u8 *dst = NULL;
4815 u8 mpp[ETH_ALEN];
4816
4817 memset(&pinfo, 0, sizeof(pinfo));
4818
4819 if (!info->attrs[NL80211_ATTR_MAC])
4820 return -EINVAL;
4821
4822 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4823
4824 if (!rdev->ops->get_mpp)
4825 return -EOPNOTSUPP;
4826
4827 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4828 return -EOPNOTSUPP;
4829
4830 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4831 if (err)
4832 return err;
4833
4834 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4835 if (!msg)
4836 return -ENOMEM;
4837
4838 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4839 dev, dst, mpp, &pinfo) < 0) {
4840 nlmsg_free(msg);
4841 return -ENOBUFS;
4842 }
4843
4844 return genlmsg_reply(msg, info);
4845 }
4846
4847 static int nl80211_dump_mpp(struct sk_buff *skb,
4848 struct netlink_callback *cb)
4849 {
4850 struct mpath_info pinfo;
4851 struct cfg80211_registered_device *rdev;
4852 struct wireless_dev *wdev;
4853 u8 dst[ETH_ALEN];
4854 u8 mpp[ETH_ALEN];
4855 int path_idx = cb->args[2];
4856 int err;
4857
4858 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4859 if (err)
4860 return err;
4861
4862 if (!rdev->ops->dump_mpp) {
4863 err = -EOPNOTSUPP;
4864 goto out_err;
4865 }
4866
4867 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4868 err = -EOPNOTSUPP;
4869 goto out_err;
4870 }
4871
4872 while (1) {
4873 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4874 mpp, &pinfo);
4875 if (err == -ENOENT)
4876 break;
4877 if (err)
4878 goto out_err;
4879
4880 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4881 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4882 wdev->netdev, dst, mpp,
4883 &pinfo) < 0)
4884 goto out;
4885
4886 path_idx++;
4887 }
4888
4889 out:
4890 cb->args[2] = path_idx;
4891 err = skb->len;
4892 out_err:
4893 nl80211_finish_wdev_dump(rdev);
4894 return err;
4895 }
4896
4897 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4898 {
4899 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4900 struct net_device *dev = info->user_ptr[1];
4901 struct wireless_dev *wdev = dev->ieee80211_ptr;
4902 struct bss_parameters params;
4903 int err;
4904
4905 memset(&params, 0, sizeof(params));
4906 /* default to not changing parameters */
4907 params.use_cts_prot = -1;
4908 params.use_short_preamble = -1;
4909 params.use_short_slot_time = -1;
4910 params.ap_isolate = -1;
4911 params.ht_opmode = -1;
4912 params.p2p_ctwindow = -1;
4913 params.p2p_opp_ps = -1;
4914
4915 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4916 params.use_cts_prot =
4917 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4918 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4919 params.use_short_preamble =
4920 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4921 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4922 params.use_short_slot_time =
4923 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4924 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4925 params.basic_rates =
4926 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4927 params.basic_rates_len =
4928 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4929 }
4930 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4931 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4932 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4933 params.ht_opmode =
4934 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4935
4936 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4937 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4938 return -EINVAL;
4939 params.p2p_ctwindow =
4940 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4941 if (params.p2p_ctwindow < 0)
4942 return -EINVAL;
4943 if (params.p2p_ctwindow != 0 &&
4944 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4945 return -EINVAL;
4946 }
4947
4948 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4949 u8 tmp;
4950
4951 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4952 return -EINVAL;
4953 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4954 if (tmp > 1)
4955 return -EINVAL;
4956 params.p2p_opp_ps = tmp;
4957 if (params.p2p_opp_ps &&
4958 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4959 return -EINVAL;
4960 }
4961
4962 if (!rdev->ops->change_bss)
4963 return -EOPNOTSUPP;
4964
4965 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4966 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4967 return -EOPNOTSUPP;
4968
4969 wdev_lock(wdev);
4970 err = rdev_change_bss(rdev, dev, &params);
4971 wdev_unlock(wdev);
4972
4973 return err;
4974 }
4975
4976 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4977 {
4978 char *data = NULL;
4979 bool is_indoor;
4980 enum nl80211_user_reg_hint_type user_reg_hint_type;
4981 u32 owner_nlportid;
4982
4983
4984 /*
4985 * You should only get this when cfg80211 hasn't yet initialized
4986 * completely when built-in to the kernel right between the time
4987 * window between nl80211_init() and regulatory_init(), if that is
4988 * even possible.
4989 */
4990 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4991 return -EINPROGRESS;
4992
4993 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4994 user_reg_hint_type =
4995 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4996 else
4997 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4998
4999 switch (user_reg_hint_type) {
5000 case NL80211_USER_REG_HINT_USER:
5001 case NL80211_USER_REG_HINT_CELL_BASE:
5002 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5003 return -EINVAL;
5004
5005 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5006 return regulatory_hint_user(data, user_reg_hint_type);
5007 case NL80211_USER_REG_HINT_INDOOR:
5008 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5009 owner_nlportid = info->snd_portid;
5010 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5011 } else {
5012 owner_nlportid = 0;
5013 is_indoor = true;
5014 }
5015
5016 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5017 default:
5018 return -EINVAL;
5019 }
5020 }
5021
5022 static int nl80211_get_mesh_config(struct sk_buff *skb,
5023 struct genl_info *info)
5024 {
5025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5026 struct net_device *dev = info->user_ptr[1];
5027 struct wireless_dev *wdev = dev->ieee80211_ptr;
5028 struct mesh_config cur_params;
5029 int err = 0;
5030 void *hdr;
5031 struct nlattr *pinfoattr;
5032 struct sk_buff *msg;
5033
5034 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5035 return -EOPNOTSUPP;
5036
5037 if (!rdev->ops->get_mesh_config)
5038 return -EOPNOTSUPP;
5039
5040 wdev_lock(wdev);
5041 /* If not connected, get default parameters */
5042 if (!wdev->mesh_id_len)
5043 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5044 else
5045 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5046 wdev_unlock(wdev);
5047
5048 if (err)
5049 return err;
5050
5051 /* Draw up a netlink message to send back */
5052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5053 if (!msg)
5054 return -ENOMEM;
5055 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5056 NL80211_CMD_GET_MESH_CONFIG);
5057 if (!hdr)
5058 goto out;
5059 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5060 if (!pinfoattr)
5061 goto nla_put_failure;
5062 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5063 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5064 cur_params.dot11MeshRetryTimeout) ||
5065 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5066 cur_params.dot11MeshConfirmTimeout) ||
5067 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5068 cur_params.dot11MeshHoldingTimeout) ||
5069 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5070 cur_params.dot11MeshMaxPeerLinks) ||
5071 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5072 cur_params.dot11MeshMaxRetries) ||
5073 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5074 cur_params.dot11MeshTTL) ||
5075 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5076 cur_params.element_ttl) ||
5077 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5078 cur_params.auto_open_plinks) ||
5079 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5080 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5081 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5082 cur_params.dot11MeshHWMPmaxPREQretries) ||
5083 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5084 cur_params.path_refresh_time) ||
5085 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5086 cur_params.min_discovery_timeout) ||
5087 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5088 cur_params.dot11MeshHWMPactivePathTimeout) ||
5089 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5090 cur_params.dot11MeshHWMPpreqMinInterval) ||
5091 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5092 cur_params.dot11MeshHWMPperrMinInterval) ||
5093 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5094 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5095 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5096 cur_params.dot11MeshHWMPRootMode) ||
5097 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5098 cur_params.dot11MeshHWMPRannInterval) ||
5099 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5100 cur_params.dot11MeshGateAnnouncementProtocol) ||
5101 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5102 cur_params.dot11MeshForwarding) ||
5103 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5104 cur_params.rssi_threshold) ||
5105 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5106 cur_params.ht_opmode) ||
5107 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5108 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5109 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5110 cur_params.dot11MeshHWMProotInterval) ||
5111 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5112 cur_params.dot11MeshHWMPconfirmationInterval) ||
5113 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5114 cur_params.power_mode) ||
5115 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5116 cur_params.dot11MeshAwakeWindowDuration) ||
5117 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5118 cur_params.plink_timeout))
5119 goto nla_put_failure;
5120 nla_nest_end(msg, pinfoattr);
5121 genlmsg_end(msg, hdr);
5122 return genlmsg_reply(msg, info);
5123
5124 nla_put_failure:
5125 genlmsg_cancel(msg, hdr);
5126 out:
5127 nlmsg_free(msg);
5128 return -ENOBUFS;
5129 }
5130
5131 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5132 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5133 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5134 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5135 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5136 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5137 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5138 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5139 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5140 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5141 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5142 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5143 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5144 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5145 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5146 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5147 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5148 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5149 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5150 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5151 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5152 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5153 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5154 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5155 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5156 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5157 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5158 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5159 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5160 };
5161
5162 static const struct nla_policy
5163 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5164 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5165 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5166 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5167 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5168 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5169 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5170 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5171 .len = IEEE80211_MAX_DATA_LEN },
5172 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5173 };
5174
5175 static int nl80211_parse_mesh_config(struct genl_info *info,
5176 struct mesh_config *cfg,
5177 u32 *mask_out)
5178 {
5179 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5180 u32 mask = 0;
5181
5182 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5183 do { \
5184 if (tb[attr]) { \
5185 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5186 return -EINVAL; \
5187 cfg->param = fn(tb[attr]); \
5188 mask |= (1 << (attr - 1)); \
5189 } \
5190 } while (0)
5191
5192
5193 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5194 return -EINVAL;
5195 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5196 info->attrs[NL80211_ATTR_MESH_CONFIG],
5197 nl80211_meshconf_params_policy))
5198 return -EINVAL;
5199
5200 /* This makes sure that there aren't more than 32 mesh config
5201 * parameters (otherwise our bitfield scheme would not work.) */
5202 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5203
5204 /* Fill in the params struct */
5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5206 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5207 nla_get_u16);
5208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5209 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5210 nla_get_u16);
5211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5212 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5213 nla_get_u16);
5214 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5215 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5216 nla_get_u16);
5217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5218 mask, NL80211_MESHCONF_MAX_RETRIES,
5219 nla_get_u8);
5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5221 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5223 mask, NL80211_MESHCONF_ELEMENT_TTL,
5224 nla_get_u8);
5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5226 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5227 nla_get_u8);
5228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5229 1, 255, mask,
5230 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5231 nla_get_u32);
5232 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5233 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5234 nla_get_u8);
5235 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5236 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5237 nla_get_u32);
5238 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5239 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5240 nla_get_u16);
5241 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5242 1, 65535, mask,
5243 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5244 nla_get_u32);
5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5246 1, 65535, mask,
5247 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5248 nla_get_u16);
5249 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5250 1, 65535, mask,
5251 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5252 nla_get_u16);
5253 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5254 dot11MeshHWMPnetDiameterTraversalTime,
5255 1, 65535, mask,
5256 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5257 nla_get_u16);
5258 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5259 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5260 nla_get_u8);
5261 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5262 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5263 nla_get_u16);
5264 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5265 dot11MeshGateAnnouncementProtocol, 0, 1,
5266 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5267 nla_get_u8);
5268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5269 mask, NL80211_MESHCONF_FORWARDING,
5270 nla_get_u8);
5271 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5272 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5273 nla_get_s32);
5274 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5275 mask, NL80211_MESHCONF_HT_OPMODE,
5276 nla_get_u16);
5277 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5278 1, 65535, mask,
5279 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5280 nla_get_u32);
5281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5282 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5283 nla_get_u16);
5284 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5285 dot11MeshHWMPconfirmationInterval,
5286 1, 65535, mask,
5287 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5288 nla_get_u16);
5289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5290 NL80211_MESH_POWER_ACTIVE,
5291 NL80211_MESH_POWER_MAX,
5292 mask, NL80211_MESHCONF_POWER_MODE,
5293 nla_get_u32);
5294 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5295 0, 65535, mask,
5296 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5297 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5298 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5299 nla_get_u32);
5300 if (mask_out)
5301 *mask_out = mask;
5302
5303 return 0;
5304
5305 #undef FILL_IN_MESH_PARAM_IF_SET
5306 }
5307
5308 static int nl80211_parse_mesh_setup(struct genl_info *info,
5309 struct mesh_setup *setup)
5310 {
5311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5312 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5313
5314 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5315 return -EINVAL;
5316 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5317 info->attrs[NL80211_ATTR_MESH_SETUP],
5318 nl80211_mesh_setup_params_policy))
5319 return -EINVAL;
5320
5321 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5322 setup->sync_method =
5323 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5324 IEEE80211_SYNC_METHOD_VENDOR :
5325 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5326
5327 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5328 setup->path_sel_proto =
5329 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5330 IEEE80211_PATH_PROTOCOL_VENDOR :
5331 IEEE80211_PATH_PROTOCOL_HWMP;
5332
5333 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5334 setup->path_metric =
5335 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5336 IEEE80211_PATH_METRIC_VENDOR :
5337 IEEE80211_PATH_METRIC_AIRTIME;
5338
5339
5340 if (tb[NL80211_MESH_SETUP_IE]) {
5341 struct nlattr *ieattr =
5342 tb[NL80211_MESH_SETUP_IE];
5343 if (!is_valid_ie_attr(ieattr))
5344 return -EINVAL;
5345 setup->ie = nla_data(ieattr);
5346 setup->ie_len = nla_len(ieattr);
5347 }
5348 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5349 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5350 return -EINVAL;
5351 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5352 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5353 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5354 if (setup->is_secure)
5355 setup->user_mpm = true;
5356
5357 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5358 if (!setup->user_mpm)
5359 return -EINVAL;
5360 setup->auth_id =
5361 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5362 }
5363
5364 return 0;
5365 }
5366
5367 static int nl80211_update_mesh_config(struct sk_buff *skb,
5368 struct genl_info *info)
5369 {
5370 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5371 struct net_device *dev = info->user_ptr[1];
5372 struct wireless_dev *wdev = dev->ieee80211_ptr;
5373 struct mesh_config cfg;
5374 u32 mask;
5375 int err;
5376
5377 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5378 return -EOPNOTSUPP;
5379
5380 if (!rdev->ops->update_mesh_config)
5381 return -EOPNOTSUPP;
5382
5383 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5384 if (err)
5385 return err;
5386
5387 wdev_lock(wdev);
5388 if (!wdev->mesh_id_len)
5389 err = -ENOLINK;
5390
5391 if (!err)
5392 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5393
5394 wdev_unlock(wdev);
5395
5396 return err;
5397 }
5398
5399 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5400 struct sk_buff *msg)
5401 {
5402 struct nlattr *nl_reg_rules;
5403 unsigned int i;
5404
5405 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5406 (regdom->dfs_region &&
5407 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5408 goto nla_put_failure;
5409
5410 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5411 if (!nl_reg_rules)
5412 goto nla_put_failure;
5413
5414 for (i = 0; i < regdom->n_reg_rules; i++) {
5415 struct nlattr *nl_reg_rule;
5416 const struct ieee80211_reg_rule *reg_rule;
5417 const struct ieee80211_freq_range *freq_range;
5418 const struct ieee80211_power_rule *power_rule;
5419 unsigned int max_bandwidth_khz;
5420
5421 reg_rule = &regdom->reg_rules[i];
5422 freq_range = &reg_rule->freq_range;
5423 power_rule = &reg_rule->power_rule;
5424
5425 nl_reg_rule = nla_nest_start(msg, i);
5426 if (!nl_reg_rule)
5427 goto nla_put_failure;
5428
5429 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5430 if (!max_bandwidth_khz)
5431 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5432 reg_rule);
5433
5434 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5435 reg_rule->flags) ||
5436 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5437 freq_range->start_freq_khz) ||
5438 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5439 freq_range->end_freq_khz) ||
5440 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5441 max_bandwidth_khz) ||
5442 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5443 power_rule->max_antenna_gain) ||
5444 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5445 power_rule->max_eirp) ||
5446 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5447 reg_rule->dfs_cac_ms))
5448 goto nla_put_failure;
5449
5450 nla_nest_end(msg, nl_reg_rule);
5451 }
5452
5453 nla_nest_end(msg, nl_reg_rules);
5454 return 0;
5455
5456 nla_put_failure:
5457 return -EMSGSIZE;
5458 }
5459
5460 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5461 {
5462 const struct ieee80211_regdomain *regdom = NULL;
5463 struct cfg80211_registered_device *rdev;
5464 struct wiphy *wiphy = NULL;
5465 struct sk_buff *msg;
5466 void *hdr;
5467
5468 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5469 if (!msg)
5470 return -ENOBUFS;
5471
5472 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5473 NL80211_CMD_GET_REG);
5474 if (!hdr)
5475 goto put_failure;
5476
5477 if (info->attrs[NL80211_ATTR_WIPHY]) {
5478 bool self_managed;
5479
5480 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5481 if (IS_ERR(rdev)) {
5482 nlmsg_free(msg);
5483 return PTR_ERR(rdev);
5484 }
5485
5486 wiphy = &rdev->wiphy;
5487 self_managed = wiphy->regulatory_flags &
5488 REGULATORY_WIPHY_SELF_MANAGED;
5489 regdom = get_wiphy_regdom(wiphy);
5490
5491 /* a self-managed-reg device must have a private regdom */
5492 if (WARN_ON(!regdom && self_managed)) {
5493 nlmsg_free(msg);
5494 return -EINVAL;
5495 }
5496
5497 if (regdom &&
5498 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5499 goto nla_put_failure;
5500 }
5501
5502 if (!wiphy && reg_last_request_cell_base() &&
5503 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5504 NL80211_USER_REG_HINT_CELL_BASE))
5505 goto nla_put_failure;
5506
5507 rcu_read_lock();
5508
5509 if (!regdom)
5510 regdom = rcu_dereference(cfg80211_regdomain);
5511
5512 if (nl80211_put_regdom(regdom, msg))
5513 goto nla_put_failure_rcu;
5514
5515 rcu_read_unlock();
5516
5517 genlmsg_end(msg, hdr);
5518 return genlmsg_reply(msg, info);
5519
5520 nla_put_failure_rcu:
5521 rcu_read_unlock();
5522 nla_put_failure:
5523 genlmsg_cancel(msg, hdr);
5524 put_failure:
5525 nlmsg_free(msg);
5526 return -EMSGSIZE;
5527 }
5528
5529 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5530 u32 seq, int flags, struct wiphy *wiphy,
5531 const struct ieee80211_regdomain *regdom)
5532 {
5533 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5534 NL80211_CMD_GET_REG);
5535
5536 if (!hdr)
5537 return -1;
5538
5539 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5540
5541 if (nl80211_put_regdom(regdom, msg))
5542 goto nla_put_failure;
5543
5544 if (!wiphy && reg_last_request_cell_base() &&
5545 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5546 NL80211_USER_REG_HINT_CELL_BASE))
5547 goto nla_put_failure;
5548
5549 if (wiphy &&
5550 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5551 goto nla_put_failure;
5552
5553 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5554 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5555 goto nla_put_failure;
5556
5557 genlmsg_end(msg, hdr);
5558 return 0;
5559
5560 nla_put_failure:
5561 genlmsg_cancel(msg, hdr);
5562 return -EMSGSIZE;
5563 }
5564
5565 static int nl80211_get_reg_dump(struct sk_buff *skb,
5566 struct netlink_callback *cb)
5567 {
5568 const struct ieee80211_regdomain *regdom = NULL;
5569 struct cfg80211_registered_device *rdev;
5570 int err, reg_idx, start = cb->args[2];
5571
5572 rtnl_lock();
5573
5574 if (cfg80211_regdomain && start == 0) {
5575 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5576 NLM_F_MULTI, NULL,
5577 rtnl_dereference(cfg80211_regdomain));
5578 if (err < 0)
5579 goto out_err;
5580 }
5581
5582 /* the global regdom is idx 0 */
5583 reg_idx = 1;
5584 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5585 regdom = get_wiphy_regdom(&rdev->wiphy);
5586 if (!regdom)
5587 continue;
5588
5589 if (++reg_idx <= start)
5590 continue;
5591
5592 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5593 NLM_F_MULTI, &rdev->wiphy, regdom);
5594 if (err < 0) {
5595 reg_idx--;
5596 break;
5597 }
5598 }
5599
5600 cb->args[2] = reg_idx;
5601 err = skb->len;
5602 out_err:
5603 rtnl_unlock();
5604 return err;
5605 }
5606
5607 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5608 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5609 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5610 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5611 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5612 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5613 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5614 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5615 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5616 };
5617
5618 static int parse_reg_rule(struct nlattr *tb[],
5619 struct ieee80211_reg_rule *reg_rule)
5620 {
5621 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5622 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5623
5624 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5625 return -EINVAL;
5626 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5627 return -EINVAL;
5628 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5629 return -EINVAL;
5630 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5631 return -EINVAL;
5632 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5633 return -EINVAL;
5634
5635 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5636
5637 freq_range->start_freq_khz =
5638 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5639 freq_range->end_freq_khz =
5640 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5641 freq_range->max_bandwidth_khz =
5642 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5643
5644 power_rule->max_eirp =
5645 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5646
5647 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5648 power_rule->max_antenna_gain =
5649 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5650
5651 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5652 reg_rule->dfs_cac_ms =
5653 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5654
5655 return 0;
5656 }
5657
5658 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5659 {
5660 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5661 struct nlattr *nl_reg_rule;
5662 char *alpha2;
5663 int rem_reg_rules, r;
5664 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5665 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5666 struct ieee80211_regdomain *rd;
5667
5668 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5669 return -EINVAL;
5670
5671 if (!info->attrs[NL80211_ATTR_REG_RULES])
5672 return -EINVAL;
5673
5674 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5675
5676 if (info->attrs[NL80211_ATTR_DFS_REGION])
5677 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5678
5679 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5680 rem_reg_rules) {
5681 num_rules++;
5682 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5683 return -EINVAL;
5684 }
5685
5686 if (!reg_is_valid_request(alpha2))
5687 return -EINVAL;
5688
5689 size_of_regd = sizeof(struct ieee80211_regdomain) +
5690 num_rules * sizeof(struct ieee80211_reg_rule);
5691
5692 rd = kzalloc(size_of_regd, GFP_KERNEL);
5693 if (!rd)
5694 return -ENOMEM;
5695
5696 rd->n_reg_rules = num_rules;
5697 rd->alpha2[0] = alpha2[0];
5698 rd->alpha2[1] = alpha2[1];
5699
5700 /*
5701 * Disable DFS master mode if the DFS region was
5702 * not supported or known on this kernel.
5703 */
5704 if (reg_supported_dfs_region(dfs_region))
5705 rd->dfs_region = dfs_region;
5706
5707 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5708 rem_reg_rules) {
5709 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5710 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5711 reg_rule_policy);
5712 if (r)
5713 goto bad_reg;
5714 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5715 if (r)
5716 goto bad_reg;
5717
5718 rule_idx++;
5719
5720 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5721 r = -EINVAL;
5722 goto bad_reg;
5723 }
5724 }
5725
5726 r = set_regdom(rd, REGD_SOURCE_CRDA);
5727 /* set_regdom took ownership */
5728 rd = NULL;
5729
5730 bad_reg:
5731 kfree(rd);
5732 return r;
5733 }
5734 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5735
5736 static int validate_scan_freqs(struct nlattr *freqs)
5737 {
5738 struct nlattr *attr1, *attr2;
5739 int n_channels = 0, tmp1, tmp2;
5740
5741 nla_for_each_nested(attr1, freqs, tmp1) {
5742 n_channels++;
5743 /*
5744 * Some hardware has a limited channel list for
5745 * scanning, and it is pretty much nonsensical
5746 * to scan for a channel twice, so disallow that
5747 * and don't require drivers to check that the
5748 * channel list they get isn't longer than what
5749 * they can scan, as long as they can scan all
5750 * the channels they registered at once.
5751 */
5752 nla_for_each_nested(attr2, freqs, tmp2)
5753 if (attr1 != attr2 &&
5754 nla_get_u32(attr1) == nla_get_u32(attr2))
5755 return 0;
5756 }
5757
5758 return n_channels;
5759 }
5760
5761 static int nl80211_parse_random_mac(struct nlattr **attrs,
5762 u8 *mac_addr, u8 *mac_addr_mask)
5763 {
5764 int i;
5765
5766 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5767 eth_zero_addr(mac_addr);
5768 eth_zero_addr(mac_addr_mask);
5769 mac_addr[0] = 0x2;
5770 mac_addr_mask[0] = 0x3;
5771
5772 return 0;
5773 }
5774
5775 /* need both or none */
5776 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5777 return -EINVAL;
5778
5779 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5780 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5781
5782 /* don't allow or configure an mcast address */
5783 if (!is_multicast_ether_addr(mac_addr_mask) ||
5784 is_multicast_ether_addr(mac_addr))
5785 return -EINVAL;
5786
5787 /*
5788 * allow users to pass a MAC address that has bits set outside
5789 * of the mask, but don't bother drivers with having to deal
5790 * with such bits
5791 */
5792 for (i = 0; i < ETH_ALEN; i++)
5793 mac_addr[i] &= mac_addr_mask[i];
5794
5795 return 0;
5796 }
5797
5798 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5799 {
5800 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5801 struct wireless_dev *wdev = info->user_ptr[1];
5802 struct cfg80211_scan_request *request;
5803 struct nlattr *attr;
5804 struct wiphy *wiphy;
5805 int err, tmp, n_ssids = 0, n_channels, i;
5806 size_t ie_len;
5807
5808 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5809 return -EINVAL;
5810
5811 wiphy = &rdev->wiphy;
5812
5813 if (!rdev->ops->scan)
5814 return -EOPNOTSUPP;
5815
5816 if (rdev->scan_req || rdev->scan_msg) {
5817 err = -EBUSY;
5818 goto unlock;
5819 }
5820
5821 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5822 n_channels = validate_scan_freqs(
5823 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5824 if (!n_channels) {
5825 err = -EINVAL;
5826 goto unlock;
5827 }
5828 } else {
5829 n_channels = ieee80211_get_num_supported_channels(wiphy);
5830 }
5831
5832 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5833 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5834 n_ssids++;
5835
5836 if (n_ssids > wiphy->max_scan_ssids) {
5837 err = -EINVAL;
5838 goto unlock;
5839 }
5840
5841 if (info->attrs[NL80211_ATTR_IE])
5842 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5843 else
5844 ie_len = 0;
5845
5846 if (ie_len > wiphy->max_scan_ie_len) {
5847 err = -EINVAL;
5848 goto unlock;
5849 }
5850
5851 request = kzalloc(sizeof(*request)
5852 + sizeof(*request->ssids) * n_ssids
5853 + sizeof(*request->channels) * n_channels
5854 + ie_len, GFP_KERNEL);
5855 if (!request) {
5856 err = -ENOMEM;
5857 goto unlock;
5858 }
5859
5860 if (n_ssids)
5861 request->ssids = (void *)&request->channels[n_channels];
5862 request->n_ssids = n_ssids;
5863 if (ie_len) {
5864 if (n_ssids)
5865 request->ie = (void *)(request->ssids + n_ssids);
5866 else
5867 request->ie = (void *)(request->channels + n_channels);
5868 }
5869
5870 i = 0;
5871 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5872 /* user specified, bail out if channel not found */
5873 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5874 struct ieee80211_channel *chan;
5875
5876 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5877
5878 if (!chan) {
5879 err = -EINVAL;
5880 goto out_free;
5881 }
5882
5883 /* ignore disabled channels */
5884 if (chan->flags & IEEE80211_CHAN_DISABLED)
5885 continue;
5886
5887 request->channels[i] = chan;
5888 i++;
5889 }
5890 } else {
5891 enum ieee80211_band band;
5892
5893 /* all channels */
5894 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5895 int j;
5896 if (!wiphy->bands[band])
5897 continue;
5898 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5899 struct ieee80211_channel *chan;
5900
5901 chan = &wiphy->bands[band]->channels[j];
5902
5903 if (chan->flags & IEEE80211_CHAN_DISABLED)
5904 continue;
5905
5906 request->channels[i] = chan;
5907 i++;
5908 }
5909 }
5910 }
5911
5912 if (!i) {
5913 err = -EINVAL;
5914 goto out_free;
5915 }
5916
5917 request->n_channels = i;
5918
5919 i = 0;
5920 if (n_ssids) {
5921 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5922 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5923 err = -EINVAL;
5924 goto out_free;
5925 }
5926 request->ssids[i].ssid_len = nla_len(attr);
5927 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5928 i++;
5929 }
5930 }
5931
5932 if (info->attrs[NL80211_ATTR_IE]) {
5933 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5934 memcpy((void *)request->ie,
5935 nla_data(info->attrs[NL80211_ATTR_IE]),
5936 request->ie_len);
5937 }
5938
5939 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5940 if (wiphy->bands[i])
5941 request->rates[i] =
5942 (1 << wiphy->bands[i]->n_bitrates) - 1;
5943
5944 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5945 nla_for_each_nested(attr,
5946 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5947 tmp) {
5948 enum ieee80211_band band = nla_type(attr);
5949
5950 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5951 err = -EINVAL;
5952 goto out_free;
5953 }
5954
5955 if (!wiphy->bands[band])
5956 continue;
5957
5958 err = ieee80211_get_ratemask(wiphy->bands[band],
5959 nla_data(attr),
5960 nla_len(attr),
5961 &request->rates[band]);
5962 if (err)
5963 goto out_free;
5964 }
5965 }
5966
5967 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5968 request->flags = nla_get_u32(
5969 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5970 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5971 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5972 err = -EOPNOTSUPP;
5973 goto out_free;
5974 }
5975
5976 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5977 if (!(wiphy->features &
5978 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5979 err = -EOPNOTSUPP;
5980 goto out_free;
5981 }
5982
5983 if (wdev->current_bss) {
5984 err = -EOPNOTSUPP;
5985 goto out_free;
5986 }
5987
5988 err = nl80211_parse_random_mac(info->attrs,
5989 request->mac_addr,
5990 request->mac_addr_mask);
5991 if (err)
5992 goto out_free;
5993 }
5994 }
5995
5996 request->no_cck =
5997 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5998
5999 if (info->attrs[NL80211_ATTR_MAC])
6000 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6001 ETH_ALEN);
6002 else
6003 eth_broadcast_addr(request->bssid);
6004
6005 request->wdev = wdev;
6006 request->wiphy = &rdev->wiphy;
6007 request->scan_start = jiffies;
6008
6009 rdev->scan_req = request;
6010 err = rdev_scan(rdev, request);
6011
6012 if (!err) {
6013 nl80211_send_scan_start(rdev, wdev);
6014 if (wdev->netdev)
6015 dev_hold(wdev->netdev);
6016 } else {
6017 out_free:
6018 rdev->scan_req = NULL;
6019 kfree(request);
6020 }
6021
6022 unlock:
6023 return err;
6024 }
6025
6026 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6027 {
6028 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6029 struct wireless_dev *wdev = info->user_ptr[1];
6030
6031 if (!rdev->ops->abort_scan)
6032 return -EOPNOTSUPP;
6033
6034 if (rdev->scan_msg)
6035 return 0;
6036
6037 if (!rdev->scan_req)
6038 return -ENOENT;
6039
6040 rdev_abort_scan(rdev, wdev);
6041 return 0;
6042 }
6043
6044 static int
6045 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6046 struct cfg80211_sched_scan_request *request,
6047 struct nlattr **attrs)
6048 {
6049 int tmp, err, i = 0;
6050 struct nlattr *attr;
6051
6052 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6053 u32 interval;
6054
6055 /*
6056 * If scan plans are not specified,
6057 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6058 * case one scan plan will be set with the specified scan
6059 * interval and infinite number of iterations.
6060 */
6061 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6062 return -EINVAL;
6063
6064 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6065 if (!interval)
6066 return -EINVAL;
6067
6068 request->scan_plans[0].interval =
6069 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6070 if (!request->scan_plans[0].interval)
6071 return -EINVAL;
6072
6073 if (request->scan_plans[0].interval >
6074 wiphy->max_sched_scan_plan_interval)
6075 request->scan_plans[0].interval =
6076 wiphy->max_sched_scan_plan_interval;
6077
6078 return 0;
6079 }
6080
6081 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6082 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6083
6084 if (WARN_ON(i >= n_plans))
6085 return -EINVAL;
6086
6087 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6088 nla_data(attr), nla_len(attr),
6089 nl80211_plan_policy);
6090 if (err)
6091 return err;
6092
6093 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6094 return -EINVAL;
6095
6096 request->scan_plans[i].interval =
6097 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6098 if (!request->scan_plans[i].interval ||
6099 request->scan_plans[i].interval >
6100 wiphy->max_sched_scan_plan_interval)
6101 return -EINVAL;
6102
6103 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6104 request->scan_plans[i].iterations =
6105 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6106 if (!request->scan_plans[i].iterations ||
6107 (request->scan_plans[i].iterations >
6108 wiphy->max_sched_scan_plan_iterations))
6109 return -EINVAL;
6110 } else if (i < n_plans - 1) {
6111 /*
6112 * All scan plans but the last one must specify
6113 * a finite number of iterations
6114 */
6115 return -EINVAL;
6116 }
6117
6118 i++;
6119 }
6120
6121 /*
6122 * The last scan plan must not specify the number of
6123 * iterations, it is supposed to run infinitely
6124 */
6125 if (request->scan_plans[n_plans - 1].iterations)
6126 return -EINVAL;
6127
6128 return 0;
6129 }
6130
6131 static struct cfg80211_sched_scan_request *
6132 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6133 struct nlattr **attrs)
6134 {
6135 struct cfg80211_sched_scan_request *request;
6136 struct nlattr *attr;
6137 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6138 enum ieee80211_band band;
6139 size_t ie_len;
6140 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6141 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6142
6143 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6144 return ERR_PTR(-EINVAL);
6145
6146 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6147 n_channels = validate_scan_freqs(
6148 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6149 if (!n_channels)
6150 return ERR_PTR(-EINVAL);
6151 } else {
6152 n_channels = ieee80211_get_num_supported_channels(wiphy);
6153 }
6154
6155 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6156 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6157 tmp)
6158 n_ssids++;
6159
6160 if (n_ssids > wiphy->max_sched_scan_ssids)
6161 return ERR_PTR(-EINVAL);
6162
6163 /*
6164 * First, count the number of 'real' matchsets. Due to an issue with
6165 * the old implementation, matchsets containing only the RSSI attribute
6166 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6167 * RSSI for all matchsets, rather than their own matchset for reporting
6168 * all APs with a strong RSSI. This is needed to be compatible with
6169 * older userspace that treated a matchset with only the RSSI as the
6170 * global RSSI for all other matchsets - if there are other matchsets.
6171 */
6172 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6173 nla_for_each_nested(attr,
6174 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6175 tmp) {
6176 struct nlattr *rssi;
6177
6178 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6179 nla_data(attr), nla_len(attr),
6180 nl80211_match_policy);
6181 if (err)
6182 return ERR_PTR(err);
6183 /* add other standalone attributes here */
6184 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6185 n_match_sets++;
6186 continue;
6187 }
6188 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6189 if (rssi)
6190 default_match_rssi = nla_get_s32(rssi);
6191 }
6192 }
6193
6194 /* However, if there's no other matchset, add the RSSI one */
6195 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6196 n_match_sets = 1;
6197
6198 if (n_match_sets > wiphy->max_match_sets)
6199 return ERR_PTR(-EINVAL);
6200
6201 if (attrs[NL80211_ATTR_IE])
6202 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6203 else
6204 ie_len = 0;
6205
6206 if (ie_len > wiphy->max_sched_scan_ie_len)
6207 return ERR_PTR(-EINVAL);
6208
6209 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6210 /*
6211 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6212 * each scan plan already specifies its own interval
6213 */
6214 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6215 return ERR_PTR(-EINVAL);
6216
6217 nla_for_each_nested(attr,
6218 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6219 n_plans++;
6220 } else {
6221 /*
6222 * The scan interval attribute is kept for backward
6223 * compatibility. If no scan plans are specified and sched scan
6224 * interval is specified, one scan plan will be set with this
6225 * scan interval and infinite number of iterations.
6226 */
6227 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6228 return ERR_PTR(-EINVAL);
6229
6230 n_plans = 1;
6231 }
6232
6233 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6234 return ERR_PTR(-EINVAL);
6235
6236 request = kzalloc(sizeof(*request)
6237 + sizeof(*request->ssids) * n_ssids
6238 + sizeof(*request->match_sets) * n_match_sets
6239 + sizeof(*request->scan_plans) * n_plans
6240 + sizeof(*request->channels) * n_channels
6241 + ie_len, GFP_KERNEL);
6242 if (!request)
6243 return ERR_PTR(-ENOMEM);
6244
6245 if (n_ssids)
6246 request->ssids = (void *)&request->channels[n_channels];
6247 request->n_ssids = n_ssids;
6248 if (ie_len) {
6249 if (n_ssids)
6250 request->ie = (void *)(request->ssids + n_ssids);
6251 else
6252 request->ie = (void *)(request->channels + n_channels);
6253 }
6254
6255 if (n_match_sets) {
6256 if (request->ie)
6257 request->match_sets = (void *)(request->ie + ie_len);
6258 else if (n_ssids)
6259 request->match_sets =
6260 (void *)(request->ssids + n_ssids);
6261 else
6262 request->match_sets =
6263 (void *)(request->channels + n_channels);
6264 }
6265 request->n_match_sets = n_match_sets;
6266
6267 if (n_match_sets)
6268 request->scan_plans = (void *)(request->match_sets +
6269 n_match_sets);
6270 else if (request->ie)
6271 request->scan_plans = (void *)(request->ie + ie_len);
6272 else if (n_ssids)
6273 request->scan_plans = (void *)(request->ssids + n_ssids);
6274 else
6275 request->scan_plans = (void *)(request->channels + n_channels);
6276
6277 request->n_scan_plans = n_plans;
6278
6279 i = 0;
6280 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6281 /* user specified, bail out if channel not found */
6282 nla_for_each_nested(attr,
6283 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6284 tmp) {
6285 struct ieee80211_channel *chan;
6286
6287 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6288
6289 if (!chan) {
6290 err = -EINVAL;
6291 goto out_free;
6292 }
6293
6294 /* ignore disabled channels */
6295 if (chan->flags & IEEE80211_CHAN_DISABLED)
6296 continue;
6297
6298 request->channels[i] = chan;
6299 i++;
6300 }
6301 } else {
6302 /* all channels */
6303 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6304 int j;
6305 if (!wiphy->bands[band])
6306 continue;
6307 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6308 struct ieee80211_channel *chan;
6309
6310 chan = &wiphy->bands[band]->channels[j];
6311
6312 if (chan->flags & IEEE80211_CHAN_DISABLED)
6313 continue;
6314
6315 request->channels[i] = chan;
6316 i++;
6317 }
6318 }
6319 }
6320
6321 if (!i) {
6322 err = -EINVAL;
6323 goto out_free;
6324 }
6325
6326 request->n_channels = i;
6327
6328 i = 0;
6329 if (n_ssids) {
6330 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6331 tmp) {
6332 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6333 err = -EINVAL;
6334 goto out_free;
6335 }
6336 request->ssids[i].ssid_len = nla_len(attr);
6337 memcpy(request->ssids[i].ssid, nla_data(attr),
6338 nla_len(attr));
6339 i++;
6340 }
6341 }
6342
6343 i = 0;
6344 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6345 nla_for_each_nested(attr,
6346 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6347 tmp) {
6348 struct nlattr *ssid, *rssi;
6349
6350 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6351 nla_data(attr), nla_len(attr),
6352 nl80211_match_policy);
6353 if (err)
6354 goto out_free;
6355 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6356 if (ssid) {
6357 if (WARN_ON(i >= n_match_sets)) {
6358 /* this indicates a programming error,
6359 * the loop above should have verified
6360 * things properly
6361 */
6362 err = -EINVAL;
6363 goto out_free;
6364 }
6365
6366 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6367 err = -EINVAL;
6368 goto out_free;
6369 }
6370 memcpy(request->match_sets[i].ssid.ssid,
6371 nla_data(ssid), nla_len(ssid));
6372 request->match_sets[i].ssid.ssid_len =
6373 nla_len(ssid);
6374 /* special attribute - old implemenation w/a */
6375 request->match_sets[i].rssi_thold =
6376 default_match_rssi;
6377 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6378 if (rssi)
6379 request->match_sets[i].rssi_thold =
6380 nla_get_s32(rssi);
6381 }
6382 i++;
6383 }
6384
6385 /* there was no other matchset, so the RSSI one is alone */
6386 if (i == 0 && n_match_sets)
6387 request->match_sets[0].rssi_thold = default_match_rssi;
6388
6389 request->min_rssi_thold = INT_MAX;
6390 for (i = 0; i < n_match_sets; i++)
6391 request->min_rssi_thold =
6392 min(request->match_sets[i].rssi_thold,
6393 request->min_rssi_thold);
6394 } else {
6395 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6396 }
6397
6398 if (ie_len) {
6399 request->ie_len = ie_len;
6400 memcpy((void *)request->ie,
6401 nla_data(attrs[NL80211_ATTR_IE]),
6402 request->ie_len);
6403 }
6404
6405 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6406 request->flags = nla_get_u32(
6407 attrs[NL80211_ATTR_SCAN_FLAGS]);
6408 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6409 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6410 err = -EOPNOTSUPP;
6411 goto out_free;
6412 }
6413
6414 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6415 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6416
6417 if (!wdev) /* must be net-detect */
6418 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6419
6420 if (!(wiphy->features & flg)) {
6421 err = -EOPNOTSUPP;
6422 goto out_free;
6423 }
6424
6425 if (wdev && wdev->current_bss) {
6426 err = -EOPNOTSUPP;
6427 goto out_free;
6428 }
6429
6430 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6431 request->mac_addr_mask);
6432 if (err)
6433 goto out_free;
6434 }
6435 }
6436
6437 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6438 request->delay =
6439 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6440
6441 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6442 if (err)
6443 goto out_free;
6444
6445 request->scan_start = jiffies;
6446
6447 return request;
6448
6449 out_free:
6450 kfree(request);
6451 return ERR_PTR(err);
6452 }
6453
6454 static int nl80211_start_sched_scan(struct sk_buff *skb,
6455 struct genl_info *info)
6456 {
6457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6458 struct net_device *dev = info->user_ptr[1];
6459 struct wireless_dev *wdev = dev->ieee80211_ptr;
6460 struct cfg80211_sched_scan_request *sched_scan_req;
6461 int err;
6462
6463 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6464 !rdev->ops->sched_scan_start)
6465 return -EOPNOTSUPP;
6466
6467 if (rdev->sched_scan_req)
6468 return -EINPROGRESS;
6469
6470 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6471 info->attrs);
6472
6473 err = PTR_ERR_OR_ZERO(sched_scan_req);
6474 if (err)
6475 goto out_err;
6476
6477 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6478 if (err)
6479 goto out_free;
6480
6481 sched_scan_req->dev = dev;
6482 sched_scan_req->wiphy = &rdev->wiphy;
6483
6484 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6485 sched_scan_req->owner_nlportid = info->snd_portid;
6486
6487 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6488
6489 nl80211_send_sched_scan(rdev, dev,
6490 NL80211_CMD_START_SCHED_SCAN);
6491 return 0;
6492
6493 out_free:
6494 kfree(sched_scan_req);
6495 out_err:
6496 return err;
6497 }
6498
6499 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6500 struct genl_info *info)
6501 {
6502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6503
6504 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6505 !rdev->ops->sched_scan_stop)
6506 return -EOPNOTSUPP;
6507
6508 return __cfg80211_stop_sched_scan(rdev, false);
6509 }
6510
6511 static int nl80211_start_radar_detection(struct sk_buff *skb,
6512 struct genl_info *info)
6513 {
6514 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6515 struct net_device *dev = info->user_ptr[1];
6516 struct wireless_dev *wdev = dev->ieee80211_ptr;
6517 struct cfg80211_chan_def chandef;
6518 enum nl80211_dfs_regions dfs_region;
6519 unsigned int cac_time_ms;
6520 int err;
6521
6522 dfs_region = reg_get_dfs_region(wdev->wiphy);
6523 if (dfs_region == NL80211_DFS_UNSET)
6524 return -EINVAL;
6525
6526 err = nl80211_parse_chandef(rdev, info, &chandef);
6527 if (err)
6528 return err;
6529
6530 if (netif_carrier_ok(dev))
6531 return -EBUSY;
6532
6533 if (wdev->cac_started)
6534 return -EBUSY;
6535
6536 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6537 wdev->iftype);
6538 if (err < 0)
6539 return err;
6540
6541 if (err == 0)
6542 return -EINVAL;
6543
6544 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6545 return -EINVAL;
6546
6547 if (!rdev->ops->start_radar_detection)
6548 return -EOPNOTSUPP;
6549
6550 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6551 if (WARN_ON(!cac_time_ms))
6552 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6553
6554 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6555 if (!err) {
6556 wdev->chandef = chandef;
6557 wdev->cac_started = true;
6558 wdev->cac_start_time = jiffies;
6559 wdev->cac_time_ms = cac_time_ms;
6560 }
6561 return err;
6562 }
6563
6564 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6565 {
6566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6567 struct net_device *dev = info->user_ptr[1];
6568 struct wireless_dev *wdev = dev->ieee80211_ptr;
6569 struct cfg80211_csa_settings params;
6570 /* csa_attrs is defined static to avoid waste of stack size - this
6571 * function is called under RTNL lock, so this should not be a problem.
6572 */
6573 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6574 int err;
6575 bool need_new_beacon = false;
6576 int len, i;
6577 u32 cs_count;
6578
6579 if (!rdev->ops->channel_switch ||
6580 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6581 return -EOPNOTSUPP;
6582
6583 switch (dev->ieee80211_ptr->iftype) {
6584 case NL80211_IFTYPE_AP:
6585 case NL80211_IFTYPE_P2P_GO:
6586 need_new_beacon = true;
6587
6588 /* useless if AP is not running */
6589 if (!wdev->beacon_interval)
6590 return -ENOTCONN;
6591 break;
6592 case NL80211_IFTYPE_ADHOC:
6593 if (!wdev->ssid_len)
6594 return -ENOTCONN;
6595 break;
6596 case NL80211_IFTYPE_MESH_POINT:
6597 if (!wdev->mesh_id_len)
6598 return -ENOTCONN;
6599 break;
6600 default:
6601 return -EOPNOTSUPP;
6602 }
6603
6604 memset(&params, 0, sizeof(params));
6605
6606 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6607 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6608 return -EINVAL;
6609
6610 /* only important for AP, IBSS and mesh create IEs internally */
6611 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6612 return -EINVAL;
6613
6614 /* Even though the attribute is u32, the specification says
6615 * u8, so let's make sure we don't overflow.
6616 */
6617 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6618 if (cs_count > 255)
6619 return -EINVAL;
6620
6621 params.count = cs_count;
6622
6623 if (!need_new_beacon)
6624 goto skip_beacons;
6625
6626 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6627 if (err)
6628 return err;
6629
6630 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6631 info->attrs[NL80211_ATTR_CSA_IES],
6632 nl80211_policy);
6633 if (err)
6634 return err;
6635
6636 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6637 if (err)
6638 return err;
6639
6640 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6641 return -EINVAL;
6642
6643 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6644 if (!len || (len % sizeof(u16)))
6645 return -EINVAL;
6646
6647 params.n_counter_offsets_beacon = len / sizeof(u16);
6648 if (rdev->wiphy.max_num_csa_counters &&
6649 (params.n_counter_offsets_beacon >
6650 rdev->wiphy.max_num_csa_counters))
6651 return -EINVAL;
6652
6653 params.counter_offsets_beacon =
6654 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6655
6656 /* sanity checks - counters should fit and be the same */
6657 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6658 u16 offset = params.counter_offsets_beacon[i];
6659
6660 if (offset >= params.beacon_csa.tail_len)
6661 return -EINVAL;
6662
6663 if (params.beacon_csa.tail[offset] != params.count)
6664 return -EINVAL;
6665 }
6666
6667 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6668 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6669 if (!len || (len % sizeof(u16)))
6670 return -EINVAL;
6671
6672 params.n_counter_offsets_presp = len / sizeof(u16);
6673 if (rdev->wiphy.max_num_csa_counters &&
6674 (params.n_counter_offsets_beacon >
6675 rdev->wiphy.max_num_csa_counters))
6676 return -EINVAL;
6677
6678 params.counter_offsets_presp =
6679 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6680
6681 /* sanity checks - counters should fit and be the same */
6682 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6683 u16 offset = params.counter_offsets_presp[i];
6684
6685 if (offset >= params.beacon_csa.probe_resp_len)
6686 return -EINVAL;
6687
6688 if (params.beacon_csa.probe_resp[offset] !=
6689 params.count)
6690 return -EINVAL;
6691 }
6692 }
6693
6694 skip_beacons:
6695 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6696 if (err)
6697 return err;
6698
6699 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6700 wdev->iftype))
6701 return -EINVAL;
6702
6703 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6704 &params.chandef,
6705 wdev->iftype);
6706 if (err < 0)
6707 return err;
6708
6709 if (err > 0)
6710 params.radar_required = true;
6711
6712 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6713 params.block_tx = true;
6714
6715 wdev_lock(wdev);
6716 err = rdev_channel_switch(rdev, dev, &params);
6717 wdev_unlock(wdev);
6718
6719 return err;
6720 }
6721
6722 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6723 u32 seq, int flags,
6724 struct cfg80211_registered_device *rdev,
6725 struct wireless_dev *wdev,
6726 struct cfg80211_internal_bss *intbss)
6727 {
6728 struct cfg80211_bss *res = &intbss->pub;
6729 const struct cfg80211_bss_ies *ies;
6730 void *hdr;
6731 struct nlattr *bss;
6732
6733 ASSERT_WDEV_LOCK(wdev);
6734
6735 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6736 NL80211_CMD_NEW_SCAN_RESULTS);
6737 if (!hdr)
6738 return -1;
6739
6740 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6741
6742 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6743 goto nla_put_failure;
6744 if (wdev->netdev &&
6745 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6746 goto nla_put_failure;
6747 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6748 goto nla_put_failure;
6749
6750 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6751 if (!bss)
6752 goto nla_put_failure;
6753 if ((!is_zero_ether_addr(res->bssid) &&
6754 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6755 goto nla_put_failure;
6756
6757 rcu_read_lock();
6758 /* indicate whether we have probe response data or not */
6759 if (rcu_access_pointer(res->proberesp_ies) &&
6760 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6761 goto fail_unlock_rcu;
6762
6763 /* this pointer prefers to be pointed to probe response data
6764 * but is always valid
6765 */
6766 ies = rcu_dereference(res->ies);
6767 if (ies) {
6768 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6769 goto fail_unlock_rcu;
6770 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6771 ies->len, ies->data))
6772 goto fail_unlock_rcu;
6773 }
6774
6775 /* and this pointer is always (unless driver didn't know) beacon data */
6776 ies = rcu_dereference(res->beacon_ies);
6777 if (ies && ies->from_beacon) {
6778 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6779 goto fail_unlock_rcu;
6780 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6781 ies->len, ies->data))
6782 goto fail_unlock_rcu;
6783 }
6784 rcu_read_unlock();
6785
6786 if (res->beacon_interval &&
6787 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6788 goto nla_put_failure;
6789 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6790 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6791 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6792 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6793 jiffies_to_msecs(jiffies - intbss->ts)))
6794 goto nla_put_failure;
6795
6796 if (intbss->ts_boottime &&
6797 nla_put_u64(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
6798 intbss->ts_boottime))
6799 goto nla_put_failure;
6800
6801 switch (rdev->wiphy.signal_type) {
6802 case CFG80211_SIGNAL_TYPE_MBM:
6803 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6804 goto nla_put_failure;
6805 break;
6806 case CFG80211_SIGNAL_TYPE_UNSPEC:
6807 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6808 goto nla_put_failure;
6809 break;
6810 default:
6811 break;
6812 }
6813
6814 switch (wdev->iftype) {
6815 case NL80211_IFTYPE_P2P_CLIENT:
6816 case NL80211_IFTYPE_STATION:
6817 if (intbss == wdev->current_bss &&
6818 nla_put_u32(msg, NL80211_BSS_STATUS,
6819 NL80211_BSS_STATUS_ASSOCIATED))
6820 goto nla_put_failure;
6821 break;
6822 case NL80211_IFTYPE_ADHOC:
6823 if (intbss == wdev->current_bss &&
6824 nla_put_u32(msg, NL80211_BSS_STATUS,
6825 NL80211_BSS_STATUS_IBSS_JOINED))
6826 goto nla_put_failure;
6827 break;
6828 default:
6829 break;
6830 }
6831
6832 nla_nest_end(msg, bss);
6833
6834 genlmsg_end(msg, hdr);
6835 return 0;
6836
6837 fail_unlock_rcu:
6838 rcu_read_unlock();
6839 nla_put_failure:
6840 genlmsg_cancel(msg, hdr);
6841 return -EMSGSIZE;
6842 }
6843
6844 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6845 {
6846 struct cfg80211_registered_device *rdev;
6847 struct cfg80211_internal_bss *scan;
6848 struct wireless_dev *wdev;
6849 int start = cb->args[2], idx = 0;
6850 int err;
6851
6852 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6853 if (err)
6854 return err;
6855
6856 wdev_lock(wdev);
6857 spin_lock_bh(&rdev->bss_lock);
6858 cfg80211_bss_expire(rdev);
6859
6860 cb->seq = rdev->bss_generation;
6861
6862 list_for_each_entry(scan, &rdev->bss_list, list) {
6863 if (++idx <= start)
6864 continue;
6865 if (nl80211_send_bss(skb, cb,
6866 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6867 rdev, wdev, scan) < 0) {
6868 idx--;
6869 break;
6870 }
6871 }
6872
6873 spin_unlock_bh(&rdev->bss_lock);
6874 wdev_unlock(wdev);
6875
6876 cb->args[2] = idx;
6877 nl80211_finish_wdev_dump(rdev);
6878
6879 return skb->len;
6880 }
6881
6882 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6883 int flags, struct net_device *dev,
6884 bool allow_radio_stats,
6885 struct survey_info *survey)
6886 {
6887 void *hdr;
6888 struct nlattr *infoattr;
6889
6890 /* skip radio stats if userspace didn't request them */
6891 if (!survey->channel && !allow_radio_stats)
6892 return 0;
6893
6894 hdr = nl80211hdr_put(msg, portid, seq, flags,
6895 NL80211_CMD_NEW_SURVEY_RESULTS);
6896 if (!hdr)
6897 return -ENOMEM;
6898
6899 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6900 goto nla_put_failure;
6901
6902 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6903 if (!infoattr)
6904 goto nla_put_failure;
6905
6906 if (survey->channel &&
6907 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6908 survey->channel->center_freq))
6909 goto nla_put_failure;
6910
6911 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6912 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6913 goto nla_put_failure;
6914 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6915 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6916 goto nla_put_failure;
6917 if ((survey->filled & SURVEY_INFO_TIME) &&
6918 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6919 survey->time))
6920 goto nla_put_failure;
6921 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6922 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6923 survey->time_busy))
6924 goto nla_put_failure;
6925 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6926 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6927 survey->time_ext_busy))
6928 goto nla_put_failure;
6929 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6930 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6931 survey->time_rx))
6932 goto nla_put_failure;
6933 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6934 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6935 survey->time_tx))
6936 goto nla_put_failure;
6937 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6938 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6939 survey->time_scan))
6940 goto nla_put_failure;
6941
6942 nla_nest_end(msg, infoattr);
6943
6944 genlmsg_end(msg, hdr);
6945 return 0;
6946
6947 nla_put_failure:
6948 genlmsg_cancel(msg, hdr);
6949 return -EMSGSIZE;
6950 }
6951
6952 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6953 {
6954 struct survey_info survey;
6955 struct cfg80211_registered_device *rdev;
6956 struct wireless_dev *wdev;
6957 int survey_idx = cb->args[2];
6958 int res;
6959 bool radio_stats;
6960
6961 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6962 if (res)
6963 return res;
6964
6965 /* prepare_wdev_dump parsed the attributes */
6966 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6967
6968 if (!wdev->netdev) {
6969 res = -EINVAL;
6970 goto out_err;
6971 }
6972
6973 if (!rdev->ops->dump_survey) {
6974 res = -EOPNOTSUPP;
6975 goto out_err;
6976 }
6977
6978 while (1) {
6979 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6980 if (res == -ENOENT)
6981 break;
6982 if (res)
6983 goto out_err;
6984
6985 /* don't send disabled channels, but do send non-channel data */
6986 if (survey.channel &&
6987 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6988 survey_idx++;
6989 continue;
6990 }
6991
6992 if (nl80211_send_survey(skb,
6993 NETLINK_CB(cb->skb).portid,
6994 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6995 wdev->netdev, radio_stats, &survey) < 0)
6996 goto out;
6997 survey_idx++;
6998 }
6999
7000 out:
7001 cb->args[2] = survey_idx;
7002 res = skb->len;
7003 out_err:
7004 nl80211_finish_wdev_dump(rdev);
7005 return res;
7006 }
7007
7008 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7009 {
7010 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7011 NL80211_WPA_VERSION_2));
7012 }
7013
7014 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7015 {
7016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7017 struct net_device *dev = info->user_ptr[1];
7018 struct ieee80211_channel *chan;
7019 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7020 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7021 enum nl80211_auth_type auth_type;
7022 struct key_parse key;
7023 bool local_state_change;
7024
7025 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7026 return -EINVAL;
7027
7028 if (!info->attrs[NL80211_ATTR_MAC])
7029 return -EINVAL;
7030
7031 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7032 return -EINVAL;
7033
7034 if (!info->attrs[NL80211_ATTR_SSID])
7035 return -EINVAL;
7036
7037 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7038 return -EINVAL;
7039
7040 err = nl80211_parse_key(info, &key);
7041 if (err)
7042 return err;
7043
7044 if (key.idx >= 0) {
7045 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7046 return -EINVAL;
7047 if (!key.p.key || !key.p.key_len)
7048 return -EINVAL;
7049 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7050 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7051 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7052 key.p.key_len != WLAN_KEY_LEN_WEP104))
7053 return -EINVAL;
7054 if (key.idx > 4)
7055 return -EINVAL;
7056 } else {
7057 key.p.key_len = 0;
7058 key.p.key = NULL;
7059 }
7060
7061 if (key.idx >= 0) {
7062 int i;
7063 bool ok = false;
7064 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7065 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7066 ok = true;
7067 break;
7068 }
7069 }
7070 if (!ok)
7071 return -EINVAL;
7072 }
7073
7074 if (!rdev->ops->auth)
7075 return -EOPNOTSUPP;
7076
7077 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7078 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7079 return -EOPNOTSUPP;
7080
7081 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7082 chan = nl80211_get_valid_chan(&rdev->wiphy,
7083 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7084 if (!chan)
7085 return -EINVAL;
7086
7087 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7088 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7089
7090 if (info->attrs[NL80211_ATTR_IE]) {
7091 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7092 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7093 }
7094
7095 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7096 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7097 return -EINVAL;
7098
7099 if (auth_type == NL80211_AUTHTYPE_SAE &&
7100 !info->attrs[NL80211_ATTR_SAE_DATA])
7101 return -EINVAL;
7102
7103 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7104 if (auth_type != NL80211_AUTHTYPE_SAE)
7105 return -EINVAL;
7106 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7107 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7108 /* need to include at least Auth Transaction and Status Code */
7109 if (sae_data_len < 4)
7110 return -EINVAL;
7111 }
7112
7113 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7114
7115 /*
7116 * Since we no longer track auth state, ignore
7117 * requests to only change local state.
7118 */
7119 if (local_state_change)
7120 return 0;
7121
7122 wdev_lock(dev->ieee80211_ptr);
7123 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7124 ssid, ssid_len, ie, ie_len,
7125 key.p.key, key.p.key_len, key.idx,
7126 sae_data, sae_data_len);
7127 wdev_unlock(dev->ieee80211_ptr);
7128 return err;
7129 }
7130
7131 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7132 struct genl_info *info,
7133 struct cfg80211_crypto_settings *settings,
7134 int cipher_limit)
7135 {
7136 memset(settings, 0, sizeof(*settings));
7137
7138 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7139
7140 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7141 u16 proto;
7142 proto = nla_get_u16(
7143 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7144 settings->control_port_ethertype = cpu_to_be16(proto);
7145 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7146 proto != ETH_P_PAE)
7147 return -EINVAL;
7148 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7149 settings->control_port_no_encrypt = true;
7150 } else
7151 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7152
7153 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7154 void *data;
7155 int len, i;
7156
7157 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7158 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7159 settings->n_ciphers_pairwise = len / sizeof(u32);
7160
7161 if (len % sizeof(u32))
7162 return -EINVAL;
7163
7164 if (settings->n_ciphers_pairwise > cipher_limit)
7165 return -EINVAL;
7166
7167 memcpy(settings->ciphers_pairwise, data, len);
7168
7169 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7170 if (!cfg80211_supported_cipher_suite(
7171 &rdev->wiphy,
7172 settings->ciphers_pairwise[i]))
7173 return -EINVAL;
7174 }
7175
7176 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7177 settings->cipher_group =
7178 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7179 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7180 settings->cipher_group))
7181 return -EINVAL;
7182 }
7183
7184 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7185 settings->wpa_versions =
7186 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7187 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7188 return -EINVAL;
7189 }
7190
7191 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7192 void *data;
7193 int len;
7194
7195 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7196 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7197 settings->n_akm_suites = len / sizeof(u32);
7198
7199 if (len % sizeof(u32))
7200 return -EINVAL;
7201
7202 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7203 return -EINVAL;
7204
7205 memcpy(settings->akm_suites, data, len);
7206 }
7207
7208 return 0;
7209 }
7210
7211 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7212 {
7213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7214 struct net_device *dev = info->user_ptr[1];
7215 struct ieee80211_channel *chan;
7216 struct cfg80211_assoc_request req = {};
7217 const u8 *bssid, *ssid;
7218 int err, ssid_len = 0;
7219
7220 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7221 return -EINVAL;
7222
7223 if (!info->attrs[NL80211_ATTR_MAC] ||
7224 !info->attrs[NL80211_ATTR_SSID] ||
7225 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7226 return -EINVAL;
7227
7228 if (!rdev->ops->assoc)
7229 return -EOPNOTSUPP;
7230
7231 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7232 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7233 return -EOPNOTSUPP;
7234
7235 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7236
7237 chan = nl80211_get_valid_chan(&rdev->wiphy,
7238 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7239 if (!chan)
7240 return -EINVAL;
7241
7242 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7243 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7244
7245 if (info->attrs[NL80211_ATTR_IE]) {
7246 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7247 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7248 }
7249
7250 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7251 enum nl80211_mfp mfp =
7252 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7253 if (mfp == NL80211_MFP_REQUIRED)
7254 req.use_mfp = true;
7255 else if (mfp != NL80211_MFP_NO)
7256 return -EINVAL;
7257 }
7258
7259 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7260 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7261
7262 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7263 req.flags |= ASSOC_REQ_DISABLE_HT;
7264
7265 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7266 memcpy(&req.ht_capa_mask,
7267 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7268 sizeof(req.ht_capa_mask));
7269
7270 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7271 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7272 return -EINVAL;
7273 memcpy(&req.ht_capa,
7274 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7275 sizeof(req.ht_capa));
7276 }
7277
7278 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7279 req.flags |= ASSOC_REQ_DISABLE_VHT;
7280
7281 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7282 memcpy(&req.vht_capa_mask,
7283 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7284 sizeof(req.vht_capa_mask));
7285
7286 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7287 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7288 return -EINVAL;
7289 memcpy(&req.vht_capa,
7290 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7291 sizeof(req.vht_capa));
7292 }
7293
7294 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7295 if (!((rdev->wiphy.features &
7296 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7297 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7298 !wiphy_ext_feature_isset(&rdev->wiphy,
7299 NL80211_EXT_FEATURE_RRM))
7300 return -EINVAL;
7301 req.flags |= ASSOC_REQ_USE_RRM;
7302 }
7303
7304 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7305 if (!err) {
7306 wdev_lock(dev->ieee80211_ptr);
7307 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7308 ssid, ssid_len, &req);
7309 wdev_unlock(dev->ieee80211_ptr);
7310 }
7311
7312 return err;
7313 }
7314
7315 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7316 {
7317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7318 struct net_device *dev = info->user_ptr[1];
7319 const u8 *ie = NULL, *bssid;
7320 int ie_len = 0, err;
7321 u16 reason_code;
7322 bool local_state_change;
7323
7324 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7325 return -EINVAL;
7326
7327 if (!info->attrs[NL80211_ATTR_MAC])
7328 return -EINVAL;
7329
7330 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7331 return -EINVAL;
7332
7333 if (!rdev->ops->deauth)
7334 return -EOPNOTSUPP;
7335
7336 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7337 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7338 return -EOPNOTSUPP;
7339
7340 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7341
7342 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7343 if (reason_code == 0) {
7344 /* Reason Code 0 is reserved */
7345 return -EINVAL;
7346 }
7347
7348 if (info->attrs[NL80211_ATTR_IE]) {
7349 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7350 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7351 }
7352
7353 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7354
7355 wdev_lock(dev->ieee80211_ptr);
7356 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7357 local_state_change);
7358 wdev_unlock(dev->ieee80211_ptr);
7359 return err;
7360 }
7361
7362 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7363 {
7364 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7365 struct net_device *dev = info->user_ptr[1];
7366 const u8 *ie = NULL, *bssid;
7367 int ie_len = 0, err;
7368 u16 reason_code;
7369 bool local_state_change;
7370
7371 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7372 return -EINVAL;
7373
7374 if (!info->attrs[NL80211_ATTR_MAC])
7375 return -EINVAL;
7376
7377 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7378 return -EINVAL;
7379
7380 if (!rdev->ops->disassoc)
7381 return -EOPNOTSUPP;
7382
7383 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7384 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7385 return -EOPNOTSUPP;
7386
7387 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7388
7389 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7390 if (reason_code == 0) {
7391 /* Reason Code 0 is reserved */
7392 return -EINVAL;
7393 }
7394
7395 if (info->attrs[NL80211_ATTR_IE]) {
7396 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7397 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7398 }
7399
7400 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7401
7402 wdev_lock(dev->ieee80211_ptr);
7403 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7404 local_state_change);
7405 wdev_unlock(dev->ieee80211_ptr);
7406 return err;
7407 }
7408
7409 static bool
7410 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7411 int mcast_rate[IEEE80211_NUM_BANDS],
7412 int rateval)
7413 {
7414 struct wiphy *wiphy = &rdev->wiphy;
7415 bool found = false;
7416 int band, i;
7417
7418 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7419 struct ieee80211_supported_band *sband;
7420
7421 sband = wiphy->bands[band];
7422 if (!sband)
7423 continue;
7424
7425 for (i = 0; i < sband->n_bitrates; i++) {
7426 if (sband->bitrates[i].bitrate == rateval) {
7427 mcast_rate[band] = i + 1;
7428 found = true;
7429 break;
7430 }
7431 }
7432 }
7433
7434 return found;
7435 }
7436
7437 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7438 {
7439 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7440 struct net_device *dev = info->user_ptr[1];
7441 struct cfg80211_ibss_params ibss;
7442 struct wiphy *wiphy;
7443 struct cfg80211_cached_keys *connkeys = NULL;
7444 int err;
7445
7446 memset(&ibss, 0, sizeof(ibss));
7447
7448 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7449 return -EINVAL;
7450
7451 if (!info->attrs[NL80211_ATTR_SSID] ||
7452 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7453 return -EINVAL;
7454
7455 ibss.beacon_interval = 100;
7456
7457 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7458 ibss.beacon_interval =
7459 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7460 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7461 return -EINVAL;
7462 }
7463
7464 if (!rdev->ops->join_ibss)
7465 return -EOPNOTSUPP;
7466
7467 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7468 return -EOPNOTSUPP;
7469
7470 wiphy = &rdev->wiphy;
7471
7472 if (info->attrs[NL80211_ATTR_MAC]) {
7473 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7474
7475 if (!is_valid_ether_addr(ibss.bssid))
7476 return -EINVAL;
7477 }
7478 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7479 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7480
7481 if (info->attrs[NL80211_ATTR_IE]) {
7482 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7483 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7484 }
7485
7486 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7487 if (err)
7488 return err;
7489
7490 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7491 NL80211_IFTYPE_ADHOC))
7492 return -EINVAL;
7493
7494 switch (ibss.chandef.width) {
7495 case NL80211_CHAN_WIDTH_5:
7496 case NL80211_CHAN_WIDTH_10:
7497 case NL80211_CHAN_WIDTH_20_NOHT:
7498 break;
7499 case NL80211_CHAN_WIDTH_20:
7500 case NL80211_CHAN_WIDTH_40:
7501 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7502 return -EINVAL;
7503 break;
7504 case NL80211_CHAN_WIDTH_80:
7505 case NL80211_CHAN_WIDTH_80P80:
7506 case NL80211_CHAN_WIDTH_160:
7507 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7508 return -EINVAL;
7509 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7510 NL80211_EXT_FEATURE_VHT_IBSS))
7511 return -EINVAL;
7512 break;
7513 default:
7514 return -EINVAL;
7515 }
7516
7517 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7518 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7519
7520 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7521 u8 *rates =
7522 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7523 int n_rates =
7524 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7525 struct ieee80211_supported_band *sband =
7526 wiphy->bands[ibss.chandef.chan->band];
7527
7528 err = ieee80211_get_ratemask(sband, rates, n_rates,
7529 &ibss.basic_rates);
7530 if (err)
7531 return err;
7532 }
7533
7534 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7535 memcpy(&ibss.ht_capa_mask,
7536 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7537 sizeof(ibss.ht_capa_mask));
7538
7539 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7540 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7541 return -EINVAL;
7542 memcpy(&ibss.ht_capa,
7543 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7544 sizeof(ibss.ht_capa));
7545 }
7546
7547 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7548 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7549 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7550 return -EINVAL;
7551
7552 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7553 bool no_ht = false;
7554
7555 connkeys = nl80211_parse_connkeys(rdev,
7556 info->attrs[NL80211_ATTR_KEYS],
7557 &no_ht);
7558 if (IS_ERR(connkeys))
7559 return PTR_ERR(connkeys);
7560
7561 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7562 no_ht) {
7563 kzfree(connkeys);
7564 return -EINVAL;
7565 }
7566 }
7567
7568 ibss.control_port =
7569 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7570
7571 ibss.userspace_handles_dfs =
7572 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7573
7574 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7575 if (err)
7576 kzfree(connkeys);
7577 return err;
7578 }
7579
7580 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7581 {
7582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7583 struct net_device *dev = info->user_ptr[1];
7584
7585 if (!rdev->ops->leave_ibss)
7586 return -EOPNOTSUPP;
7587
7588 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7589 return -EOPNOTSUPP;
7590
7591 return cfg80211_leave_ibss(rdev, dev, false);
7592 }
7593
7594 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7595 {
7596 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7597 struct net_device *dev = info->user_ptr[1];
7598 int mcast_rate[IEEE80211_NUM_BANDS];
7599 u32 nla_rate;
7600 int err;
7601
7602 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7603 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7604 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7605 return -EOPNOTSUPP;
7606
7607 if (!rdev->ops->set_mcast_rate)
7608 return -EOPNOTSUPP;
7609
7610 memset(mcast_rate, 0, sizeof(mcast_rate));
7611
7612 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7613 return -EINVAL;
7614
7615 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7616 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7617 return -EINVAL;
7618
7619 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7620
7621 return err;
7622 }
7623
7624 static struct sk_buff *
7625 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7626 struct wireless_dev *wdev, int approxlen,
7627 u32 portid, u32 seq, enum nl80211_commands cmd,
7628 enum nl80211_attrs attr,
7629 const struct nl80211_vendor_cmd_info *info,
7630 gfp_t gfp)
7631 {
7632 struct sk_buff *skb;
7633 void *hdr;
7634 struct nlattr *data;
7635
7636 skb = nlmsg_new(approxlen + 100, gfp);
7637 if (!skb)
7638 return NULL;
7639
7640 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7641 if (!hdr) {
7642 kfree_skb(skb);
7643 return NULL;
7644 }
7645
7646 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7647 goto nla_put_failure;
7648
7649 if (info) {
7650 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7651 info->vendor_id))
7652 goto nla_put_failure;
7653 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7654 info->subcmd))
7655 goto nla_put_failure;
7656 }
7657
7658 if (wdev) {
7659 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7660 wdev_id(wdev)))
7661 goto nla_put_failure;
7662 if (wdev->netdev &&
7663 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7664 wdev->netdev->ifindex))
7665 goto nla_put_failure;
7666 }
7667
7668 data = nla_nest_start(skb, attr);
7669
7670 ((void **)skb->cb)[0] = rdev;
7671 ((void **)skb->cb)[1] = hdr;
7672 ((void **)skb->cb)[2] = data;
7673
7674 return skb;
7675
7676 nla_put_failure:
7677 kfree_skb(skb);
7678 return NULL;
7679 }
7680
7681 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7682 struct wireless_dev *wdev,
7683 enum nl80211_commands cmd,
7684 enum nl80211_attrs attr,
7685 int vendor_event_idx,
7686 int approxlen, gfp_t gfp)
7687 {
7688 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7689 const struct nl80211_vendor_cmd_info *info;
7690
7691 switch (cmd) {
7692 case NL80211_CMD_TESTMODE:
7693 if (WARN_ON(vendor_event_idx != -1))
7694 return NULL;
7695 info = NULL;
7696 break;
7697 case NL80211_CMD_VENDOR:
7698 if (WARN_ON(vendor_event_idx < 0 ||
7699 vendor_event_idx >= wiphy->n_vendor_events))
7700 return NULL;
7701 info = &wiphy->vendor_events[vendor_event_idx];
7702 break;
7703 default:
7704 WARN_ON(1);
7705 return NULL;
7706 }
7707
7708 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7709 cmd, attr, info, gfp);
7710 }
7711 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7712
7713 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7714 {
7715 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7716 void *hdr = ((void **)skb->cb)[1];
7717 struct nlattr *data = ((void **)skb->cb)[2];
7718 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7719
7720 /* clear CB data for netlink core to own from now on */
7721 memset(skb->cb, 0, sizeof(skb->cb));
7722
7723 nla_nest_end(skb, data);
7724 genlmsg_end(skb, hdr);
7725
7726 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7727 mcgrp = NL80211_MCGRP_VENDOR;
7728
7729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7730 mcgrp, gfp);
7731 }
7732 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7733
7734 #ifdef CONFIG_NL80211_TESTMODE
7735 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7736 {
7737 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7738 struct wireless_dev *wdev =
7739 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7740 int err;
7741
7742 if (!rdev->ops->testmode_cmd)
7743 return -EOPNOTSUPP;
7744
7745 if (IS_ERR(wdev)) {
7746 err = PTR_ERR(wdev);
7747 if (err != -EINVAL)
7748 return err;
7749 wdev = NULL;
7750 } else if (wdev->wiphy != &rdev->wiphy) {
7751 return -EINVAL;
7752 }
7753
7754 if (!info->attrs[NL80211_ATTR_TESTDATA])
7755 return -EINVAL;
7756
7757 rdev->cur_cmd_info = info;
7758 err = rdev_testmode_cmd(rdev, wdev,
7759 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7760 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7761 rdev->cur_cmd_info = NULL;
7762
7763 return err;
7764 }
7765
7766 static int nl80211_testmode_dump(struct sk_buff *skb,
7767 struct netlink_callback *cb)
7768 {
7769 struct cfg80211_registered_device *rdev;
7770 int err;
7771 long phy_idx;
7772 void *data = NULL;
7773 int data_len = 0;
7774
7775 rtnl_lock();
7776
7777 if (cb->args[0]) {
7778 /*
7779 * 0 is a valid index, but not valid for args[0],
7780 * so we need to offset by 1.
7781 */
7782 phy_idx = cb->args[0] - 1;
7783 } else {
7784 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7785 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7786 nl80211_policy);
7787 if (err)
7788 goto out_err;
7789
7790 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7791 nl80211_fam.attrbuf);
7792 if (IS_ERR(rdev)) {
7793 err = PTR_ERR(rdev);
7794 goto out_err;
7795 }
7796 phy_idx = rdev->wiphy_idx;
7797 rdev = NULL;
7798
7799 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7800 cb->args[1] =
7801 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7802 }
7803
7804 if (cb->args[1]) {
7805 data = nla_data((void *)cb->args[1]);
7806 data_len = nla_len((void *)cb->args[1]);
7807 }
7808
7809 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7810 if (!rdev) {
7811 err = -ENOENT;
7812 goto out_err;
7813 }
7814
7815 if (!rdev->ops->testmode_dump) {
7816 err = -EOPNOTSUPP;
7817 goto out_err;
7818 }
7819
7820 while (1) {
7821 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7822 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7823 NL80211_CMD_TESTMODE);
7824 struct nlattr *tmdata;
7825
7826 if (!hdr)
7827 break;
7828
7829 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7830 genlmsg_cancel(skb, hdr);
7831 break;
7832 }
7833
7834 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7835 if (!tmdata) {
7836 genlmsg_cancel(skb, hdr);
7837 break;
7838 }
7839 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7840 nla_nest_end(skb, tmdata);
7841
7842 if (err == -ENOBUFS || err == -ENOENT) {
7843 genlmsg_cancel(skb, hdr);
7844 break;
7845 } else if (err) {
7846 genlmsg_cancel(skb, hdr);
7847 goto out_err;
7848 }
7849
7850 genlmsg_end(skb, hdr);
7851 }
7852
7853 err = skb->len;
7854 /* see above */
7855 cb->args[0] = phy_idx + 1;
7856 out_err:
7857 rtnl_unlock();
7858 return err;
7859 }
7860 #endif
7861
7862 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7863 {
7864 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7865 struct net_device *dev = info->user_ptr[1];
7866 struct cfg80211_connect_params connect;
7867 struct wiphy *wiphy;
7868 struct cfg80211_cached_keys *connkeys = NULL;
7869 int err;
7870
7871 memset(&connect, 0, sizeof(connect));
7872
7873 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7874 return -EINVAL;
7875
7876 if (!info->attrs[NL80211_ATTR_SSID] ||
7877 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7878 return -EINVAL;
7879
7880 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7881 connect.auth_type =
7882 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7883 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7884 NL80211_CMD_CONNECT))
7885 return -EINVAL;
7886 } else
7887 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7888
7889 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7890
7891 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7892 NL80211_MAX_NR_CIPHER_SUITES);
7893 if (err)
7894 return err;
7895
7896 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7897 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7898 return -EOPNOTSUPP;
7899
7900 wiphy = &rdev->wiphy;
7901
7902 connect.bg_scan_period = -1;
7903 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7904 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7905 connect.bg_scan_period =
7906 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7907 }
7908
7909 if (info->attrs[NL80211_ATTR_MAC])
7910 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7911 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7912 connect.bssid_hint =
7913 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7914 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7915 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7916
7917 if (info->attrs[NL80211_ATTR_IE]) {
7918 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7919 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7920 }
7921
7922 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7923 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7924 if (connect.mfp != NL80211_MFP_REQUIRED &&
7925 connect.mfp != NL80211_MFP_NO)
7926 return -EINVAL;
7927 } else {
7928 connect.mfp = NL80211_MFP_NO;
7929 }
7930
7931 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7932 connect.channel = nl80211_get_valid_chan(
7933 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7934 if (!connect.channel)
7935 return -EINVAL;
7936 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7937 connect.channel_hint = nl80211_get_valid_chan(
7938 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7939 if (!connect.channel_hint)
7940 return -EINVAL;
7941 }
7942
7943 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7944 connkeys = nl80211_parse_connkeys(rdev,
7945 info->attrs[NL80211_ATTR_KEYS], NULL);
7946 if (IS_ERR(connkeys))
7947 return PTR_ERR(connkeys);
7948 }
7949
7950 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7951 connect.flags |= ASSOC_REQ_DISABLE_HT;
7952
7953 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7954 memcpy(&connect.ht_capa_mask,
7955 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7956 sizeof(connect.ht_capa_mask));
7957
7958 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7959 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7960 kzfree(connkeys);
7961 return -EINVAL;
7962 }
7963 memcpy(&connect.ht_capa,
7964 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7965 sizeof(connect.ht_capa));
7966 }
7967
7968 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7969 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7970
7971 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7972 memcpy(&connect.vht_capa_mask,
7973 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7974 sizeof(connect.vht_capa_mask));
7975
7976 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7977 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7978 kzfree(connkeys);
7979 return -EINVAL;
7980 }
7981 memcpy(&connect.vht_capa,
7982 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7983 sizeof(connect.vht_capa));
7984 }
7985
7986 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7987 if (!((rdev->wiphy.features &
7988 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7989 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7990 !wiphy_ext_feature_isset(&rdev->wiphy,
7991 NL80211_EXT_FEATURE_RRM)) {
7992 kzfree(connkeys);
7993 return -EINVAL;
7994 }
7995 connect.flags |= ASSOC_REQ_USE_RRM;
7996 }
7997
7998 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
7999 if (connect.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ]) {
8000 kzfree(connkeys);
8001 return -EOPNOTSUPP;
8002 }
8003
8004 wdev_lock(dev->ieee80211_ptr);
8005 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
8006 wdev_unlock(dev->ieee80211_ptr);
8007 if (err)
8008 kzfree(connkeys);
8009 return err;
8010 }
8011
8012 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8013 {
8014 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8015 struct net_device *dev = info->user_ptr[1];
8016 u16 reason;
8017 int ret;
8018
8019 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8020 reason = WLAN_REASON_DEAUTH_LEAVING;
8021 else
8022 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8023
8024 if (reason == 0)
8025 return -EINVAL;
8026
8027 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8028 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8029 return -EOPNOTSUPP;
8030
8031 wdev_lock(dev->ieee80211_ptr);
8032 ret = cfg80211_disconnect(rdev, dev, reason, true);
8033 wdev_unlock(dev->ieee80211_ptr);
8034 return ret;
8035 }
8036
8037 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8038 {
8039 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8040 struct net *net;
8041 int err;
8042
8043 if (info->attrs[NL80211_ATTR_PID]) {
8044 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8045
8046 net = get_net_ns_by_pid(pid);
8047 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8048 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8049
8050 net = get_net_ns_by_fd(fd);
8051 } else {
8052 return -EINVAL;
8053 }
8054
8055 if (IS_ERR(net))
8056 return PTR_ERR(net);
8057
8058 err = 0;
8059
8060 /* check if anything to do */
8061 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8062 err = cfg80211_switch_netns(rdev, net);
8063
8064 put_net(net);
8065 return err;
8066 }
8067
8068 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8069 {
8070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8071 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8072 struct cfg80211_pmksa *pmksa) = NULL;
8073 struct net_device *dev = info->user_ptr[1];
8074 struct cfg80211_pmksa pmksa;
8075
8076 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8077
8078 if (!info->attrs[NL80211_ATTR_MAC])
8079 return -EINVAL;
8080
8081 if (!info->attrs[NL80211_ATTR_PMKID])
8082 return -EINVAL;
8083
8084 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8085 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8086
8087 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8088 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8089 return -EOPNOTSUPP;
8090
8091 switch (info->genlhdr->cmd) {
8092 case NL80211_CMD_SET_PMKSA:
8093 rdev_ops = rdev->ops->set_pmksa;
8094 break;
8095 case NL80211_CMD_DEL_PMKSA:
8096 rdev_ops = rdev->ops->del_pmksa;
8097 break;
8098 default:
8099 WARN_ON(1);
8100 break;
8101 }
8102
8103 if (!rdev_ops)
8104 return -EOPNOTSUPP;
8105
8106 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8107 }
8108
8109 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8110 {
8111 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8112 struct net_device *dev = info->user_ptr[1];
8113
8114 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8115 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8116 return -EOPNOTSUPP;
8117
8118 if (!rdev->ops->flush_pmksa)
8119 return -EOPNOTSUPP;
8120
8121 return rdev_flush_pmksa(rdev, dev);
8122 }
8123
8124 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8125 {
8126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8127 struct net_device *dev = info->user_ptr[1];
8128 u8 action_code, dialog_token;
8129 u32 peer_capability = 0;
8130 u16 status_code;
8131 u8 *peer;
8132 bool initiator;
8133
8134 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8135 !rdev->ops->tdls_mgmt)
8136 return -EOPNOTSUPP;
8137
8138 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8139 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8140 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8141 !info->attrs[NL80211_ATTR_IE] ||
8142 !info->attrs[NL80211_ATTR_MAC])
8143 return -EINVAL;
8144
8145 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8146 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8147 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8148 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8149 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8150 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8151 peer_capability =
8152 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8153
8154 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8155 dialog_token, status_code, peer_capability,
8156 initiator,
8157 nla_data(info->attrs[NL80211_ATTR_IE]),
8158 nla_len(info->attrs[NL80211_ATTR_IE]));
8159 }
8160
8161 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8162 {
8163 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8164 struct net_device *dev = info->user_ptr[1];
8165 enum nl80211_tdls_operation operation;
8166 u8 *peer;
8167
8168 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8169 !rdev->ops->tdls_oper)
8170 return -EOPNOTSUPP;
8171
8172 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8173 !info->attrs[NL80211_ATTR_MAC])
8174 return -EINVAL;
8175
8176 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8177 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8178
8179 return rdev_tdls_oper(rdev, dev, peer, operation);
8180 }
8181
8182 static int nl80211_remain_on_channel(struct sk_buff *skb,
8183 struct genl_info *info)
8184 {
8185 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8186 struct wireless_dev *wdev = info->user_ptr[1];
8187 struct cfg80211_chan_def chandef;
8188 struct sk_buff *msg;
8189 void *hdr;
8190 u64 cookie;
8191 u32 duration;
8192 int err;
8193
8194 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8195 !info->attrs[NL80211_ATTR_DURATION])
8196 return -EINVAL;
8197
8198 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8199
8200 if (!rdev->ops->remain_on_channel ||
8201 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8202 return -EOPNOTSUPP;
8203
8204 /*
8205 * We should be on that channel for at least a minimum amount of
8206 * time (10ms) but no longer than the driver supports.
8207 */
8208 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8209 duration > rdev->wiphy.max_remain_on_channel_duration)
8210 return -EINVAL;
8211
8212 err = nl80211_parse_chandef(rdev, info, &chandef);
8213 if (err)
8214 return err;
8215
8216 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8217 if (!msg)
8218 return -ENOMEM;
8219
8220 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8221 NL80211_CMD_REMAIN_ON_CHANNEL);
8222 if (!hdr) {
8223 err = -ENOBUFS;
8224 goto free_msg;
8225 }
8226
8227 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8228 duration, &cookie);
8229
8230 if (err)
8231 goto free_msg;
8232
8233 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8234 goto nla_put_failure;
8235
8236 genlmsg_end(msg, hdr);
8237
8238 return genlmsg_reply(msg, info);
8239
8240 nla_put_failure:
8241 err = -ENOBUFS;
8242 free_msg:
8243 nlmsg_free(msg);
8244 return err;
8245 }
8246
8247 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8248 struct genl_info *info)
8249 {
8250 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8251 struct wireless_dev *wdev = info->user_ptr[1];
8252 u64 cookie;
8253
8254 if (!info->attrs[NL80211_ATTR_COOKIE])
8255 return -EINVAL;
8256
8257 if (!rdev->ops->cancel_remain_on_channel)
8258 return -EOPNOTSUPP;
8259
8260 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8261
8262 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8263 }
8264
8265 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8266 u8 *rates, u8 rates_len)
8267 {
8268 u8 i;
8269 u32 mask = 0;
8270
8271 for (i = 0; i < rates_len; i++) {
8272 int rate = (rates[i] & 0x7f) * 5;
8273 int ridx;
8274 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8275 struct ieee80211_rate *srate =
8276 &sband->bitrates[ridx];
8277 if (rate == srate->bitrate) {
8278 mask |= 1 << ridx;
8279 break;
8280 }
8281 }
8282 if (ridx == sband->n_bitrates)
8283 return 0; /* rate not found */
8284 }
8285
8286 return mask;
8287 }
8288
8289 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8290 u8 *rates, u8 rates_len,
8291 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8292 {
8293 u8 i;
8294
8295 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8296
8297 for (i = 0; i < rates_len; i++) {
8298 int ridx, rbit;
8299
8300 ridx = rates[i] / 8;
8301 rbit = BIT(rates[i] % 8);
8302
8303 /* check validity */
8304 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8305 return false;
8306
8307 /* check availability */
8308 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8309 mcs[ridx] |= rbit;
8310 else
8311 return false;
8312 }
8313
8314 return true;
8315 }
8316
8317 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8318 {
8319 u16 mcs_mask = 0;
8320
8321 switch (vht_mcs_map) {
8322 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8323 break;
8324 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8325 mcs_mask = 0x00FF;
8326 break;
8327 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8328 mcs_mask = 0x01FF;
8329 break;
8330 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8331 mcs_mask = 0x03FF;
8332 break;
8333 default:
8334 break;
8335 }
8336
8337 return mcs_mask;
8338 }
8339
8340 static void vht_build_mcs_mask(u16 vht_mcs_map,
8341 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8342 {
8343 u8 nss;
8344
8345 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8346 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8347 vht_mcs_map >>= 2;
8348 }
8349 }
8350
8351 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8352 struct nl80211_txrate_vht *txrate,
8353 u16 mcs[NL80211_VHT_NSS_MAX])
8354 {
8355 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8356 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8357 u8 i;
8358
8359 if (!sband->vht_cap.vht_supported)
8360 return false;
8361
8362 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8363
8364 /* Build vht_mcs_mask from VHT capabilities */
8365 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8366
8367 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8368 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8369 mcs[i] = txrate->mcs[i];
8370 else
8371 return false;
8372 }
8373
8374 return true;
8375 }
8376
8377 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8378 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8379 .len = NL80211_MAX_SUPP_RATES },
8380 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8381 .len = NL80211_MAX_SUPP_HT_RATES },
8382 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8383 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8384 };
8385
8386 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8387 struct genl_info *info)
8388 {
8389 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8390 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8391 struct cfg80211_bitrate_mask mask;
8392 int rem, i;
8393 struct net_device *dev = info->user_ptr[1];
8394 struct nlattr *tx_rates;
8395 struct ieee80211_supported_band *sband;
8396 u16 vht_tx_mcs_map;
8397
8398 if (!rdev->ops->set_bitrate_mask)
8399 return -EOPNOTSUPP;
8400
8401 memset(&mask, 0, sizeof(mask));
8402 /* Default to all rates enabled */
8403 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8404 sband = rdev->wiphy.bands[i];
8405
8406 if (!sband)
8407 continue;
8408
8409 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8410 memcpy(mask.control[i].ht_mcs,
8411 sband->ht_cap.mcs.rx_mask,
8412 sizeof(mask.control[i].ht_mcs));
8413
8414 if (!sband->vht_cap.vht_supported)
8415 continue;
8416
8417 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8418 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8419 }
8420
8421 /* if no rates are given set it back to the defaults */
8422 if (!info->attrs[NL80211_ATTR_TX_RATES])
8423 goto out;
8424
8425 /*
8426 * The nested attribute uses enum nl80211_band as the index. This maps
8427 * directly to the enum ieee80211_band values used in cfg80211.
8428 */
8429 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8430 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8431 enum ieee80211_band band = nla_type(tx_rates);
8432 int err;
8433
8434 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8435 return -EINVAL;
8436 sband = rdev->wiphy.bands[band];
8437 if (sband == NULL)
8438 return -EINVAL;
8439 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8440 nla_len(tx_rates), nl80211_txattr_policy);
8441 if (err)
8442 return err;
8443 if (tb[NL80211_TXRATE_LEGACY]) {
8444 mask.control[band].legacy = rateset_to_mask(
8445 sband,
8446 nla_data(tb[NL80211_TXRATE_LEGACY]),
8447 nla_len(tb[NL80211_TXRATE_LEGACY]));
8448 if ((mask.control[band].legacy == 0) &&
8449 nla_len(tb[NL80211_TXRATE_LEGACY]))
8450 return -EINVAL;
8451 }
8452 if (tb[NL80211_TXRATE_HT]) {
8453 if (!ht_rateset_to_mask(
8454 sband,
8455 nla_data(tb[NL80211_TXRATE_HT]),
8456 nla_len(tb[NL80211_TXRATE_HT]),
8457 mask.control[band].ht_mcs))
8458 return -EINVAL;
8459 }
8460 if (tb[NL80211_TXRATE_VHT]) {
8461 if (!vht_set_mcs_mask(
8462 sband,
8463 nla_data(tb[NL80211_TXRATE_VHT]),
8464 mask.control[band].vht_mcs))
8465 return -EINVAL;
8466 }
8467 if (tb[NL80211_TXRATE_GI]) {
8468 mask.control[band].gi =
8469 nla_get_u8(tb[NL80211_TXRATE_GI]);
8470 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8471 return -EINVAL;
8472 }
8473
8474 if (mask.control[band].legacy == 0) {
8475 /* don't allow empty legacy rates if HT or VHT
8476 * are not even supported.
8477 */
8478 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8479 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8480 return -EINVAL;
8481
8482 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8483 if (mask.control[band].ht_mcs[i])
8484 goto out;
8485
8486 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8487 if (mask.control[band].vht_mcs[i])
8488 goto out;
8489
8490 /* legacy and mcs rates may not be both empty */
8491 return -EINVAL;
8492 }
8493 }
8494
8495 out:
8496 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8497 }
8498
8499 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8500 {
8501 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8502 struct wireless_dev *wdev = info->user_ptr[1];
8503 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8504
8505 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8506 return -EINVAL;
8507
8508 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8509 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8510
8511 switch (wdev->iftype) {
8512 case NL80211_IFTYPE_STATION:
8513 case NL80211_IFTYPE_ADHOC:
8514 case NL80211_IFTYPE_P2P_CLIENT:
8515 case NL80211_IFTYPE_AP:
8516 case NL80211_IFTYPE_AP_VLAN:
8517 case NL80211_IFTYPE_MESH_POINT:
8518 case NL80211_IFTYPE_P2P_GO:
8519 case NL80211_IFTYPE_P2P_DEVICE:
8520 break;
8521 default:
8522 return -EOPNOTSUPP;
8523 }
8524
8525 /* not much point in registering if we can't reply */
8526 if (!rdev->ops->mgmt_tx)
8527 return -EOPNOTSUPP;
8528
8529 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8530 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8531 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8532 }
8533
8534 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8535 {
8536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8537 struct wireless_dev *wdev = info->user_ptr[1];
8538 struct cfg80211_chan_def chandef;
8539 int err;
8540 void *hdr = NULL;
8541 u64 cookie;
8542 struct sk_buff *msg = NULL;
8543 struct cfg80211_mgmt_tx_params params = {
8544 .dont_wait_for_ack =
8545 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8546 };
8547
8548 if (!info->attrs[NL80211_ATTR_FRAME])
8549 return -EINVAL;
8550
8551 if (!rdev->ops->mgmt_tx)
8552 return -EOPNOTSUPP;
8553
8554 switch (wdev->iftype) {
8555 case NL80211_IFTYPE_P2P_DEVICE:
8556 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8557 return -EINVAL;
8558 case NL80211_IFTYPE_STATION:
8559 case NL80211_IFTYPE_ADHOC:
8560 case NL80211_IFTYPE_P2P_CLIENT:
8561 case NL80211_IFTYPE_AP:
8562 case NL80211_IFTYPE_AP_VLAN:
8563 case NL80211_IFTYPE_MESH_POINT:
8564 case NL80211_IFTYPE_P2P_GO:
8565 break;
8566 default:
8567 return -EOPNOTSUPP;
8568 }
8569
8570 if (info->attrs[NL80211_ATTR_DURATION]) {
8571 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8572 return -EINVAL;
8573 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8574
8575 /*
8576 * We should wait on the channel for at least a minimum amount
8577 * of time (10ms) but no longer than the driver supports.
8578 */
8579 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8580 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8581 return -EINVAL;
8582
8583 }
8584
8585 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8586
8587 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8588 return -EINVAL;
8589
8590 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8591
8592 /* get the channel if any has been specified, otherwise pass NULL to
8593 * the driver. The latter will use the current one
8594 */
8595 chandef.chan = NULL;
8596 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8597 err = nl80211_parse_chandef(rdev, info, &chandef);
8598 if (err)
8599 return err;
8600 }
8601
8602 if (!chandef.chan && params.offchan)
8603 return -EINVAL;
8604
8605 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8606 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8607
8608 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8609 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8610 int i;
8611
8612 if (len % sizeof(u16))
8613 return -EINVAL;
8614
8615 params.n_csa_offsets = len / sizeof(u16);
8616 params.csa_offsets =
8617 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8618
8619 /* check that all the offsets fit the frame */
8620 for (i = 0; i < params.n_csa_offsets; i++) {
8621 if (params.csa_offsets[i] >= params.len)
8622 return -EINVAL;
8623 }
8624 }
8625
8626 if (!params.dont_wait_for_ack) {
8627 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8628 if (!msg)
8629 return -ENOMEM;
8630
8631 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8632 NL80211_CMD_FRAME);
8633 if (!hdr) {
8634 err = -ENOBUFS;
8635 goto free_msg;
8636 }
8637 }
8638
8639 params.chan = chandef.chan;
8640 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8641 if (err)
8642 goto free_msg;
8643
8644 if (msg) {
8645 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8646 goto nla_put_failure;
8647
8648 genlmsg_end(msg, hdr);
8649 return genlmsg_reply(msg, info);
8650 }
8651
8652 return 0;
8653
8654 nla_put_failure:
8655 err = -ENOBUFS;
8656 free_msg:
8657 nlmsg_free(msg);
8658 return err;
8659 }
8660
8661 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8662 {
8663 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8664 struct wireless_dev *wdev = info->user_ptr[1];
8665 u64 cookie;
8666
8667 if (!info->attrs[NL80211_ATTR_COOKIE])
8668 return -EINVAL;
8669
8670 if (!rdev->ops->mgmt_tx_cancel_wait)
8671 return -EOPNOTSUPP;
8672
8673 switch (wdev->iftype) {
8674 case NL80211_IFTYPE_STATION:
8675 case NL80211_IFTYPE_ADHOC:
8676 case NL80211_IFTYPE_P2P_CLIENT:
8677 case NL80211_IFTYPE_AP:
8678 case NL80211_IFTYPE_AP_VLAN:
8679 case NL80211_IFTYPE_P2P_GO:
8680 case NL80211_IFTYPE_P2P_DEVICE:
8681 break;
8682 default:
8683 return -EOPNOTSUPP;
8684 }
8685
8686 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8687
8688 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8689 }
8690
8691 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8692 {
8693 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8694 struct wireless_dev *wdev;
8695 struct net_device *dev = info->user_ptr[1];
8696 u8 ps_state;
8697 bool state;
8698 int err;
8699
8700 if (!info->attrs[NL80211_ATTR_PS_STATE])
8701 return -EINVAL;
8702
8703 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8704
8705 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8706 return -EINVAL;
8707
8708 wdev = dev->ieee80211_ptr;
8709
8710 if (!rdev->ops->set_power_mgmt)
8711 return -EOPNOTSUPP;
8712
8713 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8714
8715 if (state == wdev->ps)
8716 return 0;
8717
8718 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8719 if (!err)
8720 wdev->ps = state;
8721 return err;
8722 }
8723
8724 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8725 {
8726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8727 enum nl80211_ps_state ps_state;
8728 struct wireless_dev *wdev;
8729 struct net_device *dev = info->user_ptr[1];
8730 struct sk_buff *msg;
8731 void *hdr;
8732 int err;
8733
8734 wdev = dev->ieee80211_ptr;
8735
8736 if (!rdev->ops->set_power_mgmt)
8737 return -EOPNOTSUPP;
8738
8739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8740 if (!msg)
8741 return -ENOMEM;
8742
8743 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8744 NL80211_CMD_GET_POWER_SAVE);
8745 if (!hdr) {
8746 err = -ENOBUFS;
8747 goto free_msg;
8748 }
8749
8750 if (wdev->ps)
8751 ps_state = NL80211_PS_ENABLED;
8752 else
8753 ps_state = NL80211_PS_DISABLED;
8754
8755 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8756 goto nla_put_failure;
8757
8758 genlmsg_end(msg, hdr);
8759 return genlmsg_reply(msg, info);
8760
8761 nla_put_failure:
8762 err = -ENOBUFS;
8763 free_msg:
8764 nlmsg_free(msg);
8765 return err;
8766 }
8767
8768 static const struct nla_policy
8769 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8770 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8771 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8772 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8773 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8774 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8775 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8776 };
8777
8778 static int nl80211_set_cqm_txe(struct genl_info *info,
8779 u32 rate, u32 pkts, u32 intvl)
8780 {
8781 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8782 struct net_device *dev = info->user_ptr[1];
8783 struct wireless_dev *wdev = dev->ieee80211_ptr;
8784
8785 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8786 return -EINVAL;
8787
8788 if (!rdev->ops->set_cqm_txe_config)
8789 return -EOPNOTSUPP;
8790
8791 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8792 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8793 return -EOPNOTSUPP;
8794
8795 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8796 }
8797
8798 static int nl80211_set_cqm_rssi(struct genl_info *info,
8799 s32 threshold, u32 hysteresis)
8800 {
8801 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8802 struct net_device *dev = info->user_ptr[1];
8803 struct wireless_dev *wdev = dev->ieee80211_ptr;
8804
8805 if (threshold > 0)
8806 return -EINVAL;
8807
8808 /* disabling - hysteresis should also be zero then */
8809 if (threshold == 0)
8810 hysteresis = 0;
8811
8812 if (!rdev->ops->set_cqm_rssi_config)
8813 return -EOPNOTSUPP;
8814
8815 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8816 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8817 return -EOPNOTSUPP;
8818
8819 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8820 }
8821
8822 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8823 {
8824 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8825 struct nlattr *cqm;
8826 int err;
8827
8828 cqm = info->attrs[NL80211_ATTR_CQM];
8829 if (!cqm)
8830 return -EINVAL;
8831
8832 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8833 nl80211_attr_cqm_policy);
8834 if (err)
8835 return err;
8836
8837 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8838 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8839 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8840 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8841
8842 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8843 }
8844
8845 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8846 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8847 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8848 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8849 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8850 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8851
8852 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8853 }
8854
8855 return -EINVAL;
8856 }
8857
8858 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8859 {
8860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8861 struct net_device *dev = info->user_ptr[1];
8862 struct ocb_setup setup = {};
8863 int err;
8864
8865 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8866 if (err)
8867 return err;
8868
8869 return cfg80211_join_ocb(rdev, dev, &setup);
8870 }
8871
8872 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8873 {
8874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8875 struct net_device *dev = info->user_ptr[1];
8876
8877 return cfg80211_leave_ocb(rdev, dev);
8878 }
8879
8880 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8881 {
8882 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8883 struct net_device *dev = info->user_ptr[1];
8884 struct mesh_config cfg;
8885 struct mesh_setup setup;
8886 int err;
8887
8888 /* start with default */
8889 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8890 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8891
8892 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8893 /* and parse parameters if given */
8894 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8895 if (err)
8896 return err;
8897 }
8898
8899 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8900 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8901 return -EINVAL;
8902
8903 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8904 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8905
8906 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8907 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8908 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8909 return -EINVAL;
8910
8911 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8912 setup.beacon_interval =
8913 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8914 if (setup.beacon_interval < 10 ||
8915 setup.beacon_interval > 10000)
8916 return -EINVAL;
8917 }
8918
8919 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8920 setup.dtim_period =
8921 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8922 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8923 return -EINVAL;
8924 }
8925
8926 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8927 /* parse additional setup parameters if given */
8928 err = nl80211_parse_mesh_setup(info, &setup);
8929 if (err)
8930 return err;
8931 }
8932
8933 if (setup.user_mpm)
8934 cfg.auto_open_plinks = false;
8935
8936 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8937 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8938 if (err)
8939 return err;
8940 } else {
8941 /* cfg80211_join_mesh() will sort it out */
8942 setup.chandef.chan = NULL;
8943 }
8944
8945 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8946 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8947 int n_rates =
8948 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8949 struct ieee80211_supported_band *sband;
8950
8951 if (!setup.chandef.chan)
8952 return -EINVAL;
8953
8954 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8955
8956 err = ieee80211_get_ratemask(sband, rates, n_rates,
8957 &setup.basic_rates);
8958 if (err)
8959 return err;
8960 }
8961
8962 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8963 }
8964
8965 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8966 {
8967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8968 struct net_device *dev = info->user_ptr[1];
8969
8970 return cfg80211_leave_mesh(rdev, dev);
8971 }
8972
8973 #ifdef CONFIG_PM
8974 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8975 struct cfg80211_registered_device *rdev)
8976 {
8977 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8978 struct nlattr *nl_pats, *nl_pat;
8979 int i, pat_len;
8980
8981 if (!wowlan->n_patterns)
8982 return 0;
8983
8984 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8985 if (!nl_pats)
8986 return -ENOBUFS;
8987
8988 for (i = 0; i < wowlan->n_patterns; i++) {
8989 nl_pat = nla_nest_start(msg, i + 1);
8990 if (!nl_pat)
8991 return -ENOBUFS;
8992 pat_len = wowlan->patterns[i].pattern_len;
8993 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8994 wowlan->patterns[i].mask) ||
8995 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8996 wowlan->patterns[i].pattern) ||
8997 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8998 wowlan->patterns[i].pkt_offset))
8999 return -ENOBUFS;
9000 nla_nest_end(msg, nl_pat);
9001 }
9002 nla_nest_end(msg, nl_pats);
9003
9004 return 0;
9005 }
9006
9007 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9008 struct cfg80211_wowlan_tcp *tcp)
9009 {
9010 struct nlattr *nl_tcp;
9011
9012 if (!tcp)
9013 return 0;
9014
9015 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9016 if (!nl_tcp)
9017 return -ENOBUFS;
9018
9019 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9020 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9021 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9022 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9023 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9024 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9025 tcp->payload_len, tcp->payload) ||
9026 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9027 tcp->data_interval) ||
9028 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9029 tcp->wake_len, tcp->wake_data) ||
9030 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9031 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9032 return -ENOBUFS;
9033
9034 if (tcp->payload_seq.len &&
9035 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9036 sizeof(tcp->payload_seq), &tcp->payload_seq))
9037 return -ENOBUFS;
9038
9039 if (tcp->payload_tok.len &&
9040 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9041 sizeof(tcp->payload_tok) + tcp->tokens_size,
9042 &tcp->payload_tok))
9043 return -ENOBUFS;
9044
9045 nla_nest_end(msg, nl_tcp);
9046
9047 return 0;
9048 }
9049
9050 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9051 struct cfg80211_sched_scan_request *req)
9052 {
9053 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9054 int i;
9055
9056 if (!req)
9057 return 0;
9058
9059 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9060 if (!nd)
9061 return -ENOBUFS;
9062
9063 if (req->n_scan_plans == 1 &&
9064 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9065 req->scan_plans[0].interval * 1000))
9066 return -ENOBUFS;
9067
9068 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9069 return -ENOBUFS;
9070
9071 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9072 if (!freqs)
9073 return -ENOBUFS;
9074
9075 for (i = 0; i < req->n_channels; i++)
9076 nla_put_u32(msg, i, req->channels[i]->center_freq);
9077
9078 nla_nest_end(msg, freqs);
9079
9080 if (req->n_match_sets) {
9081 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9082 for (i = 0; i < req->n_match_sets; i++) {
9083 match = nla_nest_start(msg, i);
9084 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9085 req->match_sets[i].ssid.ssid_len,
9086 req->match_sets[i].ssid.ssid);
9087 nla_nest_end(msg, match);
9088 }
9089 nla_nest_end(msg, matches);
9090 }
9091
9092 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9093 if (!scan_plans)
9094 return -ENOBUFS;
9095
9096 for (i = 0; i < req->n_scan_plans; i++) {
9097 scan_plan = nla_nest_start(msg, i + 1);
9098 if (!scan_plan ||
9099 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9100 req->scan_plans[i].interval) ||
9101 (req->scan_plans[i].iterations &&
9102 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9103 req->scan_plans[i].iterations)))
9104 return -ENOBUFS;
9105 nla_nest_end(msg, scan_plan);
9106 }
9107 nla_nest_end(msg, scan_plans);
9108
9109 nla_nest_end(msg, nd);
9110
9111 return 0;
9112 }
9113
9114 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9115 {
9116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9117 struct sk_buff *msg;
9118 void *hdr;
9119 u32 size = NLMSG_DEFAULT_SIZE;
9120
9121 if (!rdev->wiphy.wowlan)
9122 return -EOPNOTSUPP;
9123
9124 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9125 /* adjust size to have room for all the data */
9126 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9127 rdev->wiphy.wowlan_config->tcp->payload_len +
9128 rdev->wiphy.wowlan_config->tcp->wake_len +
9129 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9130 }
9131
9132 msg = nlmsg_new(size, GFP_KERNEL);
9133 if (!msg)
9134 return -ENOMEM;
9135
9136 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9137 NL80211_CMD_GET_WOWLAN);
9138 if (!hdr)
9139 goto nla_put_failure;
9140
9141 if (rdev->wiphy.wowlan_config) {
9142 struct nlattr *nl_wowlan;
9143
9144 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9145 if (!nl_wowlan)
9146 goto nla_put_failure;
9147
9148 if ((rdev->wiphy.wowlan_config->any &&
9149 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9150 (rdev->wiphy.wowlan_config->disconnect &&
9151 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9152 (rdev->wiphy.wowlan_config->magic_pkt &&
9153 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9154 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9155 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9156 (rdev->wiphy.wowlan_config->eap_identity_req &&
9157 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9158 (rdev->wiphy.wowlan_config->four_way_handshake &&
9159 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9160 (rdev->wiphy.wowlan_config->rfkill_release &&
9161 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9162 goto nla_put_failure;
9163
9164 if (nl80211_send_wowlan_patterns(msg, rdev))
9165 goto nla_put_failure;
9166
9167 if (nl80211_send_wowlan_tcp(msg,
9168 rdev->wiphy.wowlan_config->tcp))
9169 goto nla_put_failure;
9170
9171 if (nl80211_send_wowlan_nd(
9172 msg,
9173 rdev->wiphy.wowlan_config->nd_config))
9174 goto nla_put_failure;
9175
9176 nla_nest_end(msg, nl_wowlan);
9177 }
9178
9179 genlmsg_end(msg, hdr);
9180 return genlmsg_reply(msg, info);
9181
9182 nla_put_failure:
9183 nlmsg_free(msg);
9184 return -ENOBUFS;
9185 }
9186
9187 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9188 struct nlattr *attr,
9189 struct cfg80211_wowlan *trig)
9190 {
9191 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9192 struct cfg80211_wowlan_tcp *cfg;
9193 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9194 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9195 u32 size;
9196 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9197 int err, port;
9198
9199 if (!rdev->wiphy.wowlan->tcp)
9200 return -EINVAL;
9201
9202 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9203 nla_data(attr), nla_len(attr),
9204 nl80211_wowlan_tcp_policy);
9205 if (err)
9206 return err;
9207
9208 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9209 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9210 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9211 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9212 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9213 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9214 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9215 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9216 return -EINVAL;
9217
9218 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9219 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9220 return -EINVAL;
9221
9222 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9223 rdev->wiphy.wowlan->tcp->data_interval_max ||
9224 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9225 return -EINVAL;
9226
9227 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9228 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9229 return -EINVAL;
9230
9231 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9232 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9233 return -EINVAL;
9234
9235 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9236 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9237
9238 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9239 tokens_size = tokln - sizeof(*tok);
9240
9241 if (!tok->len || tokens_size % tok->len)
9242 return -EINVAL;
9243 if (!rdev->wiphy.wowlan->tcp->tok)
9244 return -EINVAL;
9245 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9246 return -EINVAL;
9247 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9248 return -EINVAL;
9249 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9250 return -EINVAL;
9251 if (tok->offset + tok->len > data_size)
9252 return -EINVAL;
9253 }
9254
9255 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9256 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9257 if (!rdev->wiphy.wowlan->tcp->seq)
9258 return -EINVAL;
9259 if (seq->len == 0 || seq->len > 4)
9260 return -EINVAL;
9261 if (seq->len + seq->offset > data_size)
9262 return -EINVAL;
9263 }
9264
9265 size = sizeof(*cfg);
9266 size += data_size;
9267 size += wake_size + wake_mask_size;
9268 size += tokens_size;
9269
9270 cfg = kzalloc(size, GFP_KERNEL);
9271 if (!cfg)
9272 return -ENOMEM;
9273 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9274 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9275 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9276 ETH_ALEN);
9277 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9278 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9279 else
9280 port = 0;
9281 #ifdef CONFIG_INET
9282 /* allocate a socket and port for it and use it */
9283 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9284 IPPROTO_TCP, &cfg->sock, 1);
9285 if (err) {
9286 kfree(cfg);
9287 return err;
9288 }
9289 if (inet_csk_get_port(cfg->sock->sk, port)) {
9290 sock_release(cfg->sock);
9291 kfree(cfg);
9292 return -EADDRINUSE;
9293 }
9294 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9295 #else
9296 if (!port) {
9297 kfree(cfg);
9298 return -EINVAL;
9299 }
9300 cfg->src_port = port;
9301 #endif
9302
9303 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9304 cfg->payload_len = data_size;
9305 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9306 memcpy((void *)cfg->payload,
9307 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9308 data_size);
9309 if (seq)
9310 cfg->payload_seq = *seq;
9311 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9312 cfg->wake_len = wake_size;
9313 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9314 memcpy((void *)cfg->wake_data,
9315 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9316 wake_size);
9317 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9318 data_size + wake_size;
9319 memcpy((void *)cfg->wake_mask,
9320 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9321 wake_mask_size);
9322 if (tok) {
9323 cfg->tokens_size = tokens_size;
9324 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9325 }
9326
9327 trig->tcp = cfg;
9328
9329 return 0;
9330 }
9331
9332 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9333 const struct wiphy_wowlan_support *wowlan,
9334 struct nlattr *attr,
9335 struct cfg80211_wowlan *trig)
9336 {
9337 struct nlattr **tb;
9338 int err;
9339
9340 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9341 if (!tb)
9342 return -ENOMEM;
9343
9344 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9345 err = -EOPNOTSUPP;
9346 goto out;
9347 }
9348
9349 err = nla_parse(tb, NL80211_ATTR_MAX,
9350 nla_data(attr), nla_len(attr),
9351 nl80211_policy);
9352 if (err)
9353 goto out;
9354
9355 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9356 err = PTR_ERR_OR_ZERO(trig->nd_config);
9357 if (err)
9358 trig->nd_config = NULL;
9359
9360 out:
9361 kfree(tb);
9362 return err;
9363 }
9364
9365 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9366 {
9367 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9368 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9369 struct cfg80211_wowlan new_triggers = {};
9370 struct cfg80211_wowlan *ntrig;
9371 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9372 int err, i;
9373 bool prev_enabled = rdev->wiphy.wowlan_config;
9374 bool regular = false;
9375
9376 if (!wowlan)
9377 return -EOPNOTSUPP;
9378
9379 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9380 cfg80211_rdev_free_wowlan(rdev);
9381 rdev->wiphy.wowlan_config = NULL;
9382 goto set_wakeup;
9383 }
9384
9385 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9386 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9387 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9388 nl80211_wowlan_policy);
9389 if (err)
9390 return err;
9391
9392 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9393 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9394 return -EINVAL;
9395 new_triggers.any = true;
9396 }
9397
9398 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9399 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9400 return -EINVAL;
9401 new_triggers.disconnect = true;
9402 regular = true;
9403 }
9404
9405 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9406 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9407 return -EINVAL;
9408 new_triggers.magic_pkt = true;
9409 regular = true;
9410 }
9411
9412 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9413 return -EINVAL;
9414
9415 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9416 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9417 return -EINVAL;
9418 new_triggers.gtk_rekey_failure = true;
9419 regular = true;
9420 }
9421
9422 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9423 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9424 return -EINVAL;
9425 new_triggers.eap_identity_req = true;
9426 regular = true;
9427 }
9428
9429 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9430 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9431 return -EINVAL;
9432 new_triggers.four_way_handshake = true;
9433 regular = true;
9434 }
9435
9436 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9437 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9438 return -EINVAL;
9439 new_triggers.rfkill_release = true;
9440 regular = true;
9441 }
9442
9443 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9444 struct nlattr *pat;
9445 int n_patterns = 0;
9446 int rem, pat_len, mask_len, pkt_offset;
9447 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9448
9449 regular = true;
9450
9451 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9452 rem)
9453 n_patterns++;
9454 if (n_patterns > wowlan->n_patterns)
9455 return -EINVAL;
9456
9457 new_triggers.patterns = kcalloc(n_patterns,
9458 sizeof(new_triggers.patterns[0]),
9459 GFP_KERNEL);
9460 if (!new_triggers.patterns)
9461 return -ENOMEM;
9462
9463 new_triggers.n_patterns = n_patterns;
9464 i = 0;
9465
9466 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9467 rem) {
9468 u8 *mask_pat;
9469
9470 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9471 nla_len(pat), NULL);
9472 err = -EINVAL;
9473 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9474 !pat_tb[NL80211_PKTPAT_PATTERN])
9475 goto error;
9476 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9477 mask_len = DIV_ROUND_UP(pat_len, 8);
9478 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9479 goto error;
9480 if (pat_len > wowlan->pattern_max_len ||
9481 pat_len < wowlan->pattern_min_len)
9482 goto error;
9483
9484 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9485 pkt_offset = 0;
9486 else
9487 pkt_offset = nla_get_u32(
9488 pat_tb[NL80211_PKTPAT_OFFSET]);
9489 if (pkt_offset > wowlan->max_pkt_offset)
9490 goto error;
9491 new_triggers.patterns[i].pkt_offset = pkt_offset;
9492
9493 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9494 if (!mask_pat) {
9495 err = -ENOMEM;
9496 goto error;
9497 }
9498 new_triggers.patterns[i].mask = mask_pat;
9499 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9500 mask_len);
9501 mask_pat += mask_len;
9502 new_triggers.patterns[i].pattern = mask_pat;
9503 new_triggers.patterns[i].pattern_len = pat_len;
9504 memcpy(mask_pat,
9505 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9506 pat_len);
9507 i++;
9508 }
9509 }
9510
9511 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9512 regular = true;
9513 err = nl80211_parse_wowlan_tcp(
9514 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9515 &new_triggers);
9516 if (err)
9517 goto error;
9518 }
9519
9520 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9521 regular = true;
9522 err = nl80211_parse_wowlan_nd(
9523 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9524 &new_triggers);
9525 if (err)
9526 goto error;
9527 }
9528
9529 /* The 'any' trigger means the device continues operating more or less
9530 * as in its normal operation mode and wakes up the host on most of the
9531 * normal interrupts (like packet RX, ...)
9532 * It therefore makes little sense to combine with the more constrained
9533 * wakeup trigger modes.
9534 */
9535 if (new_triggers.any && regular) {
9536 err = -EINVAL;
9537 goto error;
9538 }
9539
9540 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9541 if (!ntrig) {
9542 err = -ENOMEM;
9543 goto error;
9544 }
9545 cfg80211_rdev_free_wowlan(rdev);
9546 rdev->wiphy.wowlan_config = ntrig;
9547
9548 set_wakeup:
9549 if (rdev->ops->set_wakeup &&
9550 prev_enabled != !!rdev->wiphy.wowlan_config)
9551 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9552
9553 return 0;
9554 error:
9555 for (i = 0; i < new_triggers.n_patterns; i++)
9556 kfree(new_triggers.patterns[i].mask);
9557 kfree(new_triggers.patterns);
9558 if (new_triggers.tcp && new_triggers.tcp->sock)
9559 sock_release(new_triggers.tcp->sock);
9560 kfree(new_triggers.tcp);
9561 kfree(new_triggers.nd_config);
9562 return err;
9563 }
9564 #endif
9565
9566 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9567 struct cfg80211_registered_device *rdev)
9568 {
9569 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9570 int i, j, pat_len;
9571 struct cfg80211_coalesce_rules *rule;
9572
9573 if (!rdev->coalesce->n_rules)
9574 return 0;
9575
9576 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9577 if (!nl_rules)
9578 return -ENOBUFS;
9579
9580 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9581 nl_rule = nla_nest_start(msg, i + 1);
9582 if (!nl_rule)
9583 return -ENOBUFS;
9584
9585 rule = &rdev->coalesce->rules[i];
9586 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9587 rule->delay))
9588 return -ENOBUFS;
9589
9590 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9591 rule->condition))
9592 return -ENOBUFS;
9593
9594 nl_pats = nla_nest_start(msg,
9595 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9596 if (!nl_pats)
9597 return -ENOBUFS;
9598
9599 for (j = 0; j < rule->n_patterns; j++) {
9600 nl_pat = nla_nest_start(msg, j + 1);
9601 if (!nl_pat)
9602 return -ENOBUFS;
9603 pat_len = rule->patterns[j].pattern_len;
9604 if (nla_put(msg, NL80211_PKTPAT_MASK,
9605 DIV_ROUND_UP(pat_len, 8),
9606 rule->patterns[j].mask) ||
9607 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9608 rule->patterns[j].pattern) ||
9609 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9610 rule->patterns[j].pkt_offset))
9611 return -ENOBUFS;
9612 nla_nest_end(msg, nl_pat);
9613 }
9614 nla_nest_end(msg, nl_pats);
9615 nla_nest_end(msg, nl_rule);
9616 }
9617 nla_nest_end(msg, nl_rules);
9618
9619 return 0;
9620 }
9621
9622 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9623 {
9624 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9625 struct sk_buff *msg;
9626 void *hdr;
9627
9628 if (!rdev->wiphy.coalesce)
9629 return -EOPNOTSUPP;
9630
9631 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9632 if (!msg)
9633 return -ENOMEM;
9634
9635 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9636 NL80211_CMD_GET_COALESCE);
9637 if (!hdr)
9638 goto nla_put_failure;
9639
9640 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9641 goto nla_put_failure;
9642
9643 genlmsg_end(msg, hdr);
9644 return genlmsg_reply(msg, info);
9645
9646 nla_put_failure:
9647 nlmsg_free(msg);
9648 return -ENOBUFS;
9649 }
9650
9651 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9652 {
9653 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9654 int i, j;
9655 struct cfg80211_coalesce_rules *rule;
9656
9657 if (!coalesce)
9658 return;
9659
9660 for (i = 0; i < coalesce->n_rules; i++) {
9661 rule = &coalesce->rules[i];
9662 for (j = 0; j < rule->n_patterns; j++)
9663 kfree(rule->patterns[j].mask);
9664 kfree(rule->patterns);
9665 }
9666 kfree(coalesce->rules);
9667 kfree(coalesce);
9668 rdev->coalesce = NULL;
9669 }
9670
9671 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9672 struct nlattr *rule,
9673 struct cfg80211_coalesce_rules *new_rule)
9674 {
9675 int err, i;
9676 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9677 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9678 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9679 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9680
9681 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9682 nla_len(rule), nl80211_coalesce_policy);
9683 if (err)
9684 return err;
9685
9686 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9687 new_rule->delay =
9688 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9689 if (new_rule->delay > coalesce->max_delay)
9690 return -EINVAL;
9691
9692 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9693 new_rule->condition =
9694 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9695 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9696 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9697 return -EINVAL;
9698
9699 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9700 return -EINVAL;
9701
9702 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9703 rem)
9704 n_patterns++;
9705 if (n_patterns > coalesce->n_patterns)
9706 return -EINVAL;
9707
9708 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9709 GFP_KERNEL);
9710 if (!new_rule->patterns)
9711 return -ENOMEM;
9712
9713 new_rule->n_patterns = n_patterns;
9714 i = 0;
9715
9716 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9717 rem) {
9718 u8 *mask_pat;
9719
9720 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9721 nla_len(pat), NULL);
9722 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9723 !pat_tb[NL80211_PKTPAT_PATTERN])
9724 return -EINVAL;
9725 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9726 mask_len = DIV_ROUND_UP(pat_len, 8);
9727 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9728 return -EINVAL;
9729 if (pat_len > coalesce->pattern_max_len ||
9730 pat_len < coalesce->pattern_min_len)
9731 return -EINVAL;
9732
9733 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9734 pkt_offset = 0;
9735 else
9736 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9737 if (pkt_offset > coalesce->max_pkt_offset)
9738 return -EINVAL;
9739 new_rule->patterns[i].pkt_offset = pkt_offset;
9740
9741 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9742 if (!mask_pat)
9743 return -ENOMEM;
9744
9745 new_rule->patterns[i].mask = mask_pat;
9746 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9747 mask_len);
9748
9749 mask_pat += mask_len;
9750 new_rule->patterns[i].pattern = mask_pat;
9751 new_rule->patterns[i].pattern_len = pat_len;
9752 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9753 pat_len);
9754 i++;
9755 }
9756
9757 return 0;
9758 }
9759
9760 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9761 {
9762 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9763 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9764 struct cfg80211_coalesce new_coalesce = {};
9765 struct cfg80211_coalesce *n_coalesce;
9766 int err, rem_rule, n_rules = 0, i, j;
9767 struct nlattr *rule;
9768 struct cfg80211_coalesce_rules *tmp_rule;
9769
9770 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9771 return -EOPNOTSUPP;
9772
9773 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9774 cfg80211_rdev_free_coalesce(rdev);
9775 rdev_set_coalesce(rdev, NULL);
9776 return 0;
9777 }
9778
9779 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9780 rem_rule)
9781 n_rules++;
9782 if (n_rules > coalesce->n_rules)
9783 return -EINVAL;
9784
9785 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9786 GFP_KERNEL);
9787 if (!new_coalesce.rules)
9788 return -ENOMEM;
9789
9790 new_coalesce.n_rules = n_rules;
9791 i = 0;
9792
9793 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9794 rem_rule) {
9795 err = nl80211_parse_coalesce_rule(rdev, rule,
9796 &new_coalesce.rules[i]);
9797 if (err)
9798 goto error;
9799
9800 i++;
9801 }
9802
9803 err = rdev_set_coalesce(rdev, &new_coalesce);
9804 if (err)
9805 goto error;
9806
9807 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9808 if (!n_coalesce) {
9809 err = -ENOMEM;
9810 goto error;
9811 }
9812 cfg80211_rdev_free_coalesce(rdev);
9813 rdev->coalesce = n_coalesce;
9814
9815 return 0;
9816 error:
9817 for (i = 0; i < new_coalesce.n_rules; i++) {
9818 tmp_rule = &new_coalesce.rules[i];
9819 for (j = 0; j < tmp_rule->n_patterns; j++)
9820 kfree(tmp_rule->patterns[j].mask);
9821 kfree(tmp_rule->patterns);
9822 }
9823 kfree(new_coalesce.rules);
9824
9825 return err;
9826 }
9827
9828 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9829 {
9830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9831 struct net_device *dev = info->user_ptr[1];
9832 struct wireless_dev *wdev = dev->ieee80211_ptr;
9833 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9834 struct cfg80211_gtk_rekey_data rekey_data;
9835 int err;
9836
9837 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9838 return -EINVAL;
9839
9840 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9841 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9842 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9843 nl80211_rekey_policy);
9844 if (err)
9845 return err;
9846
9847 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9848 return -ERANGE;
9849 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9850 return -ERANGE;
9851 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9852 return -ERANGE;
9853
9854 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9855 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9856 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9857
9858 wdev_lock(wdev);
9859 if (!wdev->current_bss) {
9860 err = -ENOTCONN;
9861 goto out;
9862 }
9863
9864 if (!rdev->ops->set_rekey_data) {
9865 err = -EOPNOTSUPP;
9866 goto out;
9867 }
9868
9869 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9870 out:
9871 wdev_unlock(wdev);
9872 return err;
9873 }
9874
9875 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9876 struct genl_info *info)
9877 {
9878 struct net_device *dev = info->user_ptr[1];
9879 struct wireless_dev *wdev = dev->ieee80211_ptr;
9880
9881 if (wdev->iftype != NL80211_IFTYPE_AP &&
9882 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9883 return -EINVAL;
9884
9885 if (wdev->ap_unexpected_nlportid)
9886 return -EBUSY;
9887
9888 wdev->ap_unexpected_nlportid = info->snd_portid;
9889 return 0;
9890 }
9891
9892 static int nl80211_probe_client(struct sk_buff *skb,
9893 struct genl_info *info)
9894 {
9895 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9896 struct net_device *dev = info->user_ptr[1];
9897 struct wireless_dev *wdev = dev->ieee80211_ptr;
9898 struct sk_buff *msg;
9899 void *hdr;
9900 const u8 *addr;
9901 u64 cookie;
9902 int err;
9903
9904 if (wdev->iftype != NL80211_IFTYPE_AP &&
9905 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9906 return -EOPNOTSUPP;
9907
9908 if (!info->attrs[NL80211_ATTR_MAC])
9909 return -EINVAL;
9910
9911 if (!rdev->ops->probe_client)
9912 return -EOPNOTSUPP;
9913
9914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9915 if (!msg)
9916 return -ENOMEM;
9917
9918 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9919 NL80211_CMD_PROBE_CLIENT);
9920 if (!hdr) {
9921 err = -ENOBUFS;
9922 goto free_msg;
9923 }
9924
9925 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9926
9927 err = rdev_probe_client(rdev, dev, addr, &cookie);
9928 if (err)
9929 goto free_msg;
9930
9931 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9932 goto nla_put_failure;
9933
9934 genlmsg_end(msg, hdr);
9935
9936 return genlmsg_reply(msg, info);
9937
9938 nla_put_failure:
9939 err = -ENOBUFS;
9940 free_msg:
9941 nlmsg_free(msg);
9942 return err;
9943 }
9944
9945 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9946 {
9947 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9948 struct cfg80211_beacon_registration *reg, *nreg;
9949 int rv;
9950
9951 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9952 return -EOPNOTSUPP;
9953
9954 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9955 if (!nreg)
9956 return -ENOMEM;
9957
9958 /* First, check if already registered. */
9959 spin_lock_bh(&rdev->beacon_registrations_lock);
9960 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9961 if (reg->nlportid == info->snd_portid) {
9962 rv = -EALREADY;
9963 goto out_err;
9964 }
9965 }
9966 /* Add it to the list */
9967 nreg->nlportid = info->snd_portid;
9968 list_add(&nreg->list, &rdev->beacon_registrations);
9969
9970 spin_unlock_bh(&rdev->beacon_registrations_lock);
9971
9972 return 0;
9973 out_err:
9974 spin_unlock_bh(&rdev->beacon_registrations_lock);
9975 kfree(nreg);
9976 return rv;
9977 }
9978
9979 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9980 {
9981 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9982 struct wireless_dev *wdev = info->user_ptr[1];
9983 int err;
9984
9985 if (!rdev->ops->start_p2p_device)
9986 return -EOPNOTSUPP;
9987
9988 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9989 return -EOPNOTSUPP;
9990
9991 if (wdev->p2p_started)
9992 return 0;
9993
9994 if (rfkill_blocked(rdev->rfkill))
9995 return -ERFKILL;
9996
9997 err = rdev_start_p2p_device(rdev, wdev);
9998 if (err)
9999 return err;
10000
10001 wdev->p2p_started = true;
10002 rdev->opencount++;
10003
10004 return 0;
10005 }
10006
10007 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10008 {
10009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10010 struct wireless_dev *wdev = info->user_ptr[1];
10011
10012 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10013 return -EOPNOTSUPP;
10014
10015 if (!rdev->ops->stop_p2p_device)
10016 return -EOPNOTSUPP;
10017
10018 cfg80211_stop_p2p_device(rdev, wdev);
10019
10020 return 0;
10021 }
10022
10023 static int nl80211_get_protocol_features(struct sk_buff *skb,
10024 struct genl_info *info)
10025 {
10026 void *hdr;
10027 struct sk_buff *msg;
10028
10029 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10030 if (!msg)
10031 return -ENOMEM;
10032
10033 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10034 NL80211_CMD_GET_PROTOCOL_FEATURES);
10035 if (!hdr)
10036 goto nla_put_failure;
10037
10038 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10039 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10040 goto nla_put_failure;
10041
10042 genlmsg_end(msg, hdr);
10043 return genlmsg_reply(msg, info);
10044
10045 nla_put_failure:
10046 kfree_skb(msg);
10047 return -ENOBUFS;
10048 }
10049
10050 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10051 {
10052 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10053 struct cfg80211_update_ft_ies_params ft_params;
10054 struct net_device *dev = info->user_ptr[1];
10055
10056 if (!rdev->ops->update_ft_ies)
10057 return -EOPNOTSUPP;
10058
10059 if (!info->attrs[NL80211_ATTR_MDID] ||
10060 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10061 return -EINVAL;
10062
10063 memset(&ft_params, 0, sizeof(ft_params));
10064 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10065 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10066 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10067
10068 return rdev_update_ft_ies(rdev, dev, &ft_params);
10069 }
10070
10071 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10072 struct genl_info *info)
10073 {
10074 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10075 struct wireless_dev *wdev = info->user_ptr[1];
10076 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10077 u16 duration;
10078 int ret;
10079
10080 if (!rdev->ops->crit_proto_start)
10081 return -EOPNOTSUPP;
10082
10083 if (WARN_ON(!rdev->ops->crit_proto_stop))
10084 return -EINVAL;
10085
10086 if (rdev->crit_proto_nlportid)
10087 return -EBUSY;
10088
10089 /* determine protocol if provided */
10090 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10091 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10092
10093 if (proto >= NUM_NL80211_CRIT_PROTO)
10094 return -EINVAL;
10095
10096 /* timeout must be provided */
10097 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10098 return -EINVAL;
10099
10100 duration =
10101 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10102
10103 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10104 return -ERANGE;
10105
10106 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10107 if (!ret)
10108 rdev->crit_proto_nlportid = info->snd_portid;
10109
10110 return ret;
10111 }
10112
10113 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10114 struct genl_info *info)
10115 {
10116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10117 struct wireless_dev *wdev = info->user_ptr[1];
10118
10119 if (!rdev->ops->crit_proto_stop)
10120 return -EOPNOTSUPP;
10121
10122 if (rdev->crit_proto_nlportid) {
10123 rdev->crit_proto_nlportid = 0;
10124 rdev_crit_proto_stop(rdev, wdev);
10125 }
10126 return 0;
10127 }
10128
10129 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10130 {
10131 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10132 struct wireless_dev *wdev =
10133 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10134 int i, err;
10135 u32 vid, subcmd;
10136
10137 if (!rdev->wiphy.vendor_commands)
10138 return -EOPNOTSUPP;
10139
10140 if (IS_ERR(wdev)) {
10141 err = PTR_ERR(wdev);
10142 if (err != -EINVAL)
10143 return err;
10144 wdev = NULL;
10145 } else if (wdev->wiphy != &rdev->wiphy) {
10146 return -EINVAL;
10147 }
10148
10149 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10150 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10151 return -EINVAL;
10152
10153 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10154 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10155 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10156 const struct wiphy_vendor_command *vcmd;
10157 void *data = NULL;
10158 int len = 0;
10159
10160 vcmd = &rdev->wiphy.vendor_commands[i];
10161
10162 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10163 continue;
10164
10165 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10166 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10167 if (!wdev)
10168 return -EINVAL;
10169 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10170 !wdev->netdev)
10171 return -EINVAL;
10172
10173 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10174 if (wdev->netdev &&
10175 !netif_running(wdev->netdev))
10176 return -ENETDOWN;
10177 if (!wdev->netdev && !wdev->p2p_started)
10178 return -ENETDOWN;
10179 }
10180
10181 if (!vcmd->doit)
10182 return -EOPNOTSUPP;
10183 } else {
10184 wdev = NULL;
10185 }
10186
10187 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10188 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10189 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10190 }
10191
10192 rdev->cur_cmd_info = info;
10193 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10194 data, len);
10195 rdev->cur_cmd_info = NULL;
10196 return err;
10197 }
10198
10199 return -EOPNOTSUPP;
10200 }
10201
10202 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10203 struct netlink_callback *cb,
10204 struct cfg80211_registered_device **rdev,
10205 struct wireless_dev **wdev)
10206 {
10207 u32 vid, subcmd;
10208 unsigned int i;
10209 int vcmd_idx = -1;
10210 int err;
10211 void *data = NULL;
10212 unsigned int data_len = 0;
10213
10214 rtnl_lock();
10215
10216 if (cb->args[0]) {
10217 /* subtract the 1 again here */
10218 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10219 struct wireless_dev *tmp;
10220
10221 if (!wiphy) {
10222 err = -ENODEV;
10223 goto out_unlock;
10224 }
10225 *rdev = wiphy_to_rdev(wiphy);
10226 *wdev = NULL;
10227
10228 if (cb->args[1]) {
10229 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
10230 if (tmp->identifier == cb->args[1] - 1) {
10231 *wdev = tmp;
10232 break;
10233 }
10234 }
10235 }
10236
10237 /* keep rtnl locked in successful case */
10238 return 0;
10239 }
10240
10241 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10242 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10243 nl80211_policy);
10244 if (err)
10245 goto out_unlock;
10246
10247 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10248 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10249 err = -EINVAL;
10250 goto out_unlock;
10251 }
10252
10253 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10254 nl80211_fam.attrbuf);
10255 if (IS_ERR(*wdev))
10256 *wdev = NULL;
10257
10258 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10259 nl80211_fam.attrbuf);
10260 if (IS_ERR(*rdev)) {
10261 err = PTR_ERR(*rdev);
10262 goto out_unlock;
10263 }
10264
10265 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10266 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10267
10268 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10269 const struct wiphy_vendor_command *vcmd;
10270
10271 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10272
10273 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10274 continue;
10275
10276 if (!vcmd->dumpit) {
10277 err = -EOPNOTSUPP;
10278 goto out_unlock;
10279 }
10280
10281 vcmd_idx = i;
10282 break;
10283 }
10284
10285 if (vcmd_idx < 0) {
10286 err = -EOPNOTSUPP;
10287 goto out_unlock;
10288 }
10289
10290 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10291 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10292 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10293 }
10294
10295 /* 0 is the first index - add 1 to parse only once */
10296 cb->args[0] = (*rdev)->wiphy_idx + 1;
10297 /* add 1 to know if it was NULL */
10298 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10299 cb->args[2] = vcmd_idx;
10300 cb->args[3] = (unsigned long)data;
10301 cb->args[4] = data_len;
10302
10303 /* keep rtnl locked in successful case */
10304 return 0;
10305 out_unlock:
10306 rtnl_unlock();
10307 return err;
10308 }
10309
10310 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10311 struct netlink_callback *cb)
10312 {
10313 struct cfg80211_registered_device *rdev;
10314 struct wireless_dev *wdev;
10315 unsigned int vcmd_idx;
10316 const struct wiphy_vendor_command *vcmd;
10317 void *data;
10318 int data_len;
10319 int err;
10320 struct nlattr *vendor_data;
10321
10322 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10323 if (err)
10324 return err;
10325
10326 vcmd_idx = cb->args[2];
10327 data = (void *)cb->args[3];
10328 data_len = cb->args[4];
10329 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10330
10331 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10332 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10333 if (!wdev)
10334 return -EINVAL;
10335 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10336 !wdev->netdev)
10337 return -EINVAL;
10338
10339 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10340 if (wdev->netdev &&
10341 !netif_running(wdev->netdev))
10342 return -ENETDOWN;
10343 if (!wdev->netdev && !wdev->p2p_started)
10344 return -ENETDOWN;
10345 }
10346 }
10347
10348 while (1) {
10349 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10350 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10351 NL80211_CMD_VENDOR);
10352 if (!hdr)
10353 break;
10354
10355 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10356 (wdev && nla_put_u64(skb, NL80211_ATTR_WDEV,
10357 wdev_id(wdev)))) {
10358 genlmsg_cancel(skb, hdr);
10359 break;
10360 }
10361
10362 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10363 if (!vendor_data) {
10364 genlmsg_cancel(skb, hdr);
10365 break;
10366 }
10367
10368 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10369 (unsigned long *)&cb->args[5]);
10370 nla_nest_end(skb, vendor_data);
10371
10372 if (err == -ENOBUFS || err == -ENOENT) {
10373 genlmsg_cancel(skb, hdr);
10374 break;
10375 } else if (err) {
10376 genlmsg_cancel(skb, hdr);
10377 goto out;
10378 }
10379
10380 genlmsg_end(skb, hdr);
10381 }
10382
10383 err = skb->len;
10384 out:
10385 rtnl_unlock();
10386 return err;
10387 }
10388
10389 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10390 enum nl80211_commands cmd,
10391 enum nl80211_attrs attr,
10392 int approxlen)
10393 {
10394 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10395
10396 if (WARN_ON(!rdev->cur_cmd_info))
10397 return NULL;
10398
10399 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10400 rdev->cur_cmd_info->snd_portid,
10401 rdev->cur_cmd_info->snd_seq,
10402 cmd, attr, NULL, GFP_KERNEL);
10403 }
10404 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10405
10406 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10407 {
10408 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10409 void *hdr = ((void **)skb->cb)[1];
10410 struct nlattr *data = ((void **)skb->cb)[2];
10411
10412 /* clear CB data for netlink core to own from now on */
10413 memset(skb->cb, 0, sizeof(skb->cb));
10414
10415 if (WARN_ON(!rdev->cur_cmd_info)) {
10416 kfree_skb(skb);
10417 return -EINVAL;
10418 }
10419
10420 nla_nest_end(skb, data);
10421 genlmsg_end(skb, hdr);
10422 return genlmsg_reply(skb, rdev->cur_cmd_info);
10423 }
10424 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10425
10426
10427 static int nl80211_set_qos_map(struct sk_buff *skb,
10428 struct genl_info *info)
10429 {
10430 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10431 struct cfg80211_qos_map *qos_map = NULL;
10432 struct net_device *dev = info->user_ptr[1];
10433 u8 *pos, len, num_des, des_len, des;
10434 int ret;
10435
10436 if (!rdev->ops->set_qos_map)
10437 return -EOPNOTSUPP;
10438
10439 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10440 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10441 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10442
10443 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10444 len > IEEE80211_QOS_MAP_LEN_MAX)
10445 return -EINVAL;
10446
10447 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10448 if (!qos_map)
10449 return -ENOMEM;
10450
10451 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10452 if (num_des) {
10453 des_len = num_des *
10454 sizeof(struct cfg80211_dscp_exception);
10455 memcpy(qos_map->dscp_exception, pos, des_len);
10456 qos_map->num_des = num_des;
10457 for (des = 0; des < num_des; des++) {
10458 if (qos_map->dscp_exception[des].up > 7) {
10459 kfree(qos_map);
10460 return -EINVAL;
10461 }
10462 }
10463 pos += des_len;
10464 }
10465 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10466 }
10467
10468 wdev_lock(dev->ieee80211_ptr);
10469 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10470 if (!ret)
10471 ret = rdev_set_qos_map(rdev, dev, qos_map);
10472 wdev_unlock(dev->ieee80211_ptr);
10473
10474 kfree(qos_map);
10475 return ret;
10476 }
10477
10478 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10479 {
10480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10481 struct net_device *dev = info->user_ptr[1];
10482 struct wireless_dev *wdev = dev->ieee80211_ptr;
10483 const u8 *peer;
10484 u8 tsid, up;
10485 u16 admitted_time = 0;
10486 int err;
10487
10488 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10489 return -EOPNOTSUPP;
10490
10491 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10492 !info->attrs[NL80211_ATTR_USER_PRIO])
10493 return -EINVAL;
10494
10495 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10496 if (tsid >= IEEE80211_NUM_TIDS)
10497 return -EINVAL;
10498
10499 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10500 if (up >= IEEE80211_NUM_UPS)
10501 return -EINVAL;
10502
10503 /* WMM uses TIDs 0-7 even for TSPEC */
10504 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10505 /* TODO: handle 802.11 TSPEC/admission control
10506 * need more attributes for that (e.g. BA session requirement);
10507 * change the WMM adminssion test above to allow both then
10508 */
10509 return -EINVAL;
10510 }
10511
10512 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10513
10514 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10515 admitted_time =
10516 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10517 if (!admitted_time)
10518 return -EINVAL;
10519 }
10520
10521 wdev_lock(wdev);
10522 switch (wdev->iftype) {
10523 case NL80211_IFTYPE_STATION:
10524 case NL80211_IFTYPE_P2P_CLIENT:
10525 if (wdev->current_bss)
10526 break;
10527 err = -ENOTCONN;
10528 goto out;
10529 default:
10530 err = -EOPNOTSUPP;
10531 goto out;
10532 }
10533
10534 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10535
10536 out:
10537 wdev_unlock(wdev);
10538 return err;
10539 }
10540
10541 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10542 {
10543 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10544 struct net_device *dev = info->user_ptr[1];
10545 struct wireless_dev *wdev = dev->ieee80211_ptr;
10546 const u8 *peer;
10547 u8 tsid;
10548 int err;
10549
10550 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10551 return -EINVAL;
10552
10553 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10554 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10555
10556 wdev_lock(wdev);
10557 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10558 wdev_unlock(wdev);
10559
10560 return err;
10561 }
10562
10563 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10564 struct genl_info *info)
10565 {
10566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10567 struct net_device *dev = info->user_ptr[1];
10568 struct wireless_dev *wdev = dev->ieee80211_ptr;
10569 struct cfg80211_chan_def chandef = {};
10570 const u8 *addr;
10571 u8 oper_class;
10572 int err;
10573
10574 if (!rdev->ops->tdls_channel_switch ||
10575 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10576 return -EOPNOTSUPP;
10577
10578 switch (dev->ieee80211_ptr->iftype) {
10579 case NL80211_IFTYPE_STATION:
10580 case NL80211_IFTYPE_P2P_CLIENT:
10581 break;
10582 default:
10583 return -EOPNOTSUPP;
10584 }
10585
10586 if (!info->attrs[NL80211_ATTR_MAC] ||
10587 !info->attrs[NL80211_ATTR_OPER_CLASS])
10588 return -EINVAL;
10589
10590 err = nl80211_parse_chandef(rdev, info, &chandef);
10591 if (err)
10592 return err;
10593
10594 /*
10595 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10596 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10597 * specification is not defined for them.
10598 */
10599 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10600 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10601 chandef.width != NL80211_CHAN_WIDTH_20)
10602 return -EINVAL;
10603
10604 /* we will be active on the TDLS link */
10605 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10606 wdev->iftype))
10607 return -EINVAL;
10608
10609 /* don't allow switching to DFS channels */
10610 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10611 return -EINVAL;
10612
10613 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10614 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10615
10616 wdev_lock(wdev);
10617 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10618 wdev_unlock(wdev);
10619
10620 return err;
10621 }
10622
10623 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10624 struct genl_info *info)
10625 {
10626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10627 struct net_device *dev = info->user_ptr[1];
10628 struct wireless_dev *wdev = dev->ieee80211_ptr;
10629 const u8 *addr;
10630
10631 if (!rdev->ops->tdls_channel_switch ||
10632 !rdev->ops->tdls_cancel_channel_switch ||
10633 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10634 return -EOPNOTSUPP;
10635
10636 switch (dev->ieee80211_ptr->iftype) {
10637 case NL80211_IFTYPE_STATION:
10638 case NL80211_IFTYPE_P2P_CLIENT:
10639 break;
10640 default:
10641 return -EOPNOTSUPP;
10642 }
10643
10644 if (!info->attrs[NL80211_ATTR_MAC])
10645 return -EINVAL;
10646
10647 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10648
10649 wdev_lock(wdev);
10650 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10651 wdev_unlock(wdev);
10652
10653 return 0;
10654 }
10655
10656 #define NL80211_FLAG_NEED_WIPHY 0x01
10657 #define NL80211_FLAG_NEED_NETDEV 0x02
10658 #define NL80211_FLAG_NEED_RTNL 0x04
10659 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10660 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10661 NL80211_FLAG_CHECK_NETDEV_UP)
10662 #define NL80211_FLAG_NEED_WDEV 0x10
10663 /* If a netdev is associated, it must be UP, P2P must be started */
10664 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10665 NL80211_FLAG_CHECK_NETDEV_UP)
10666 #define NL80211_FLAG_CLEAR_SKB 0x20
10667
10668 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10669 struct genl_info *info)
10670 {
10671 struct cfg80211_registered_device *rdev;
10672 struct wireless_dev *wdev;
10673 struct net_device *dev;
10674 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10675
10676 if (rtnl)
10677 rtnl_lock();
10678
10679 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10680 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10681 if (IS_ERR(rdev)) {
10682 if (rtnl)
10683 rtnl_unlock();
10684 return PTR_ERR(rdev);
10685 }
10686 info->user_ptr[0] = rdev;
10687 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10688 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10689 ASSERT_RTNL();
10690
10691 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10692 info->attrs);
10693 if (IS_ERR(wdev)) {
10694 if (rtnl)
10695 rtnl_unlock();
10696 return PTR_ERR(wdev);
10697 }
10698
10699 dev = wdev->netdev;
10700 rdev = wiphy_to_rdev(wdev->wiphy);
10701
10702 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10703 if (!dev) {
10704 if (rtnl)
10705 rtnl_unlock();
10706 return -EINVAL;
10707 }
10708
10709 info->user_ptr[1] = dev;
10710 } else {
10711 info->user_ptr[1] = wdev;
10712 }
10713
10714 if (dev) {
10715 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10716 !netif_running(dev)) {
10717 if (rtnl)
10718 rtnl_unlock();
10719 return -ENETDOWN;
10720 }
10721
10722 dev_hold(dev);
10723 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10724 if (!wdev->p2p_started) {
10725 if (rtnl)
10726 rtnl_unlock();
10727 return -ENETDOWN;
10728 }
10729 }
10730
10731 info->user_ptr[0] = rdev;
10732 }
10733
10734 return 0;
10735 }
10736
10737 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10738 struct genl_info *info)
10739 {
10740 if (info->user_ptr[1]) {
10741 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10742 struct wireless_dev *wdev = info->user_ptr[1];
10743
10744 if (wdev->netdev)
10745 dev_put(wdev->netdev);
10746 } else {
10747 dev_put(info->user_ptr[1]);
10748 }
10749 }
10750
10751 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10752 rtnl_unlock();
10753
10754 /* If needed, clear the netlink message payload from the SKB
10755 * as it might contain key data that shouldn't stick around on
10756 * the heap after the SKB is freed. The netlink message header
10757 * is still needed for further processing, so leave it intact.
10758 */
10759 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10760 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10761
10762 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10763 }
10764 }
10765
10766 static const struct genl_ops nl80211_ops[] = {
10767 {
10768 .cmd = NL80211_CMD_GET_WIPHY,
10769 .doit = nl80211_get_wiphy,
10770 .dumpit = nl80211_dump_wiphy,
10771 .done = nl80211_dump_wiphy_done,
10772 .policy = nl80211_policy,
10773 /* can be retrieved by unprivileged users */
10774 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10775 NL80211_FLAG_NEED_RTNL,
10776 },
10777 {
10778 .cmd = NL80211_CMD_SET_WIPHY,
10779 .doit = nl80211_set_wiphy,
10780 .policy = nl80211_policy,
10781 .flags = GENL_ADMIN_PERM,
10782 .internal_flags = NL80211_FLAG_NEED_RTNL,
10783 },
10784 {
10785 .cmd = NL80211_CMD_GET_INTERFACE,
10786 .doit = nl80211_get_interface,
10787 .dumpit = nl80211_dump_interface,
10788 .policy = nl80211_policy,
10789 /* can be retrieved by unprivileged users */
10790 .internal_flags = NL80211_FLAG_NEED_WDEV |
10791 NL80211_FLAG_NEED_RTNL,
10792 },
10793 {
10794 .cmd = NL80211_CMD_SET_INTERFACE,
10795 .doit = nl80211_set_interface,
10796 .policy = nl80211_policy,
10797 .flags = GENL_ADMIN_PERM,
10798 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10799 NL80211_FLAG_NEED_RTNL,
10800 },
10801 {
10802 .cmd = NL80211_CMD_NEW_INTERFACE,
10803 .doit = nl80211_new_interface,
10804 .policy = nl80211_policy,
10805 .flags = GENL_ADMIN_PERM,
10806 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10807 NL80211_FLAG_NEED_RTNL,
10808 },
10809 {
10810 .cmd = NL80211_CMD_DEL_INTERFACE,
10811 .doit = nl80211_del_interface,
10812 .policy = nl80211_policy,
10813 .flags = GENL_ADMIN_PERM,
10814 .internal_flags = NL80211_FLAG_NEED_WDEV |
10815 NL80211_FLAG_NEED_RTNL,
10816 },
10817 {
10818 .cmd = NL80211_CMD_GET_KEY,
10819 .doit = nl80211_get_key,
10820 .policy = nl80211_policy,
10821 .flags = GENL_ADMIN_PERM,
10822 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10823 NL80211_FLAG_NEED_RTNL,
10824 },
10825 {
10826 .cmd = NL80211_CMD_SET_KEY,
10827 .doit = nl80211_set_key,
10828 .policy = nl80211_policy,
10829 .flags = GENL_ADMIN_PERM,
10830 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10831 NL80211_FLAG_NEED_RTNL |
10832 NL80211_FLAG_CLEAR_SKB,
10833 },
10834 {
10835 .cmd = NL80211_CMD_NEW_KEY,
10836 .doit = nl80211_new_key,
10837 .policy = nl80211_policy,
10838 .flags = GENL_ADMIN_PERM,
10839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10840 NL80211_FLAG_NEED_RTNL |
10841 NL80211_FLAG_CLEAR_SKB,
10842 },
10843 {
10844 .cmd = NL80211_CMD_DEL_KEY,
10845 .doit = nl80211_del_key,
10846 .policy = nl80211_policy,
10847 .flags = GENL_ADMIN_PERM,
10848 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10849 NL80211_FLAG_NEED_RTNL,
10850 },
10851 {
10852 .cmd = NL80211_CMD_SET_BEACON,
10853 .policy = nl80211_policy,
10854 .flags = GENL_ADMIN_PERM,
10855 .doit = nl80211_set_beacon,
10856 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10857 NL80211_FLAG_NEED_RTNL,
10858 },
10859 {
10860 .cmd = NL80211_CMD_START_AP,
10861 .policy = nl80211_policy,
10862 .flags = GENL_ADMIN_PERM,
10863 .doit = nl80211_start_ap,
10864 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10865 NL80211_FLAG_NEED_RTNL,
10866 },
10867 {
10868 .cmd = NL80211_CMD_STOP_AP,
10869 .policy = nl80211_policy,
10870 .flags = GENL_ADMIN_PERM,
10871 .doit = nl80211_stop_ap,
10872 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10873 NL80211_FLAG_NEED_RTNL,
10874 },
10875 {
10876 .cmd = NL80211_CMD_GET_STATION,
10877 .doit = nl80211_get_station,
10878 .dumpit = nl80211_dump_station,
10879 .policy = nl80211_policy,
10880 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10881 NL80211_FLAG_NEED_RTNL,
10882 },
10883 {
10884 .cmd = NL80211_CMD_SET_STATION,
10885 .doit = nl80211_set_station,
10886 .policy = nl80211_policy,
10887 .flags = GENL_ADMIN_PERM,
10888 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10889 NL80211_FLAG_NEED_RTNL,
10890 },
10891 {
10892 .cmd = NL80211_CMD_NEW_STATION,
10893 .doit = nl80211_new_station,
10894 .policy = nl80211_policy,
10895 .flags = GENL_ADMIN_PERM,
10896 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10897 NL80211_FLAG_NEED_RTNL,
10898 },
10899 {
10900 .cmd = NL80211_CMD_DEL_STATION,
10901 .doit = nl80211_del_station,
10902 .policy = nl80211_policy,
10903 .flags = GENL_ADMIN_PERM,
10904 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10905 NL80211_FLAG_NEED_RTNL,
10906 },
10907 {
10908 .cmd = NL80211_CMD_GET_MPATH,
10909 .doit = nl80211_get_mpath,
10910 .dumpit = nl80211_dump_mpath,
10911 .policy = nl80211_policy,
10912 .flags = GENL_ADMIN_PERM,
10913 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10914 NL80211_FLAG_NEED_RTNL,
10915 },
10916 {
10917 .cmd = NL80211_CMD_GET_MPP,
10918 .doit = nl80211_get_mpp,
10919 .dumpit = nl80211_dump_mpp,
10920 .policy = nl80211_policy,
10921 .flags = GENL_ADMIN_PERM,
10922 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10923 NL80211_FLAG_NEED_RTNL,
10924 },
10925 {
10926 .cmd = NL80211_CMD_SET_MPATH,
10927 .doit = nl80211_set_mpath,
10928 .policy = nl80211_policy,
10929 .flags = GENL_ADMIN_PERM,
10930 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10931 NL80211_FLAG_NEED_RTNL,
10932 },
10933 {
10934 .cmd = NL80211_CMD_NEW_MPATH,
10935 .doit = nl80211_new_mpath,
10936 .policy = nl80211_policy,
10937 .flags = GENL_ADMIN_PERM,
10938 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10939 NL80211_FLAG_NEED_RTNL,
10940 },
10941 {
10942 .cmd = NL80211_CMD_DEL_MPATH,
10943 .doit = nl80211_del_mpath,
10944 .policy = nl80211_policy,
10945 .flags = GENL_ADMIN_PERM,
10946 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10947 NL80211_FLAG_NEED_RTNL,
10948 },
10949 {
10950 .cmd = NL80211_CMD_SET_BSS,
10951 .doit = nl80211_set_bss,
10952 .policy = nl80211_policy,
10953 .flags = GENL_ADMIN_PERM,
10954 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10955 NL80211_FLAG_NEED_RTNL,
10956 },
10957 {
10958 .cmd = NL80211_CMD_GET_REG,
10959 .doit = nl80211_get_reg_do,
10960 .dumpit = nl80211_get_reg_dump,
10961 .policy = nl80211_policy,
10962 .internal_flags = NL80211_FLAG_NEED_RTNL,
10963 /* can be retrieved by unprivileged users */
10964 },
10965 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
10966 {
10967 .cmd = NL80211_CMD_SET_REG,
10968 .doit = nl80211_set_reg,
10969 .policy = nl80211_policy,
10970 .flags = GENL_ADMIN_PERM,
10971 .internal_flags = NL80211_FLAG_NEED_RTNL,
10972 },
10973 #endif
10974 {
10975 .cmd = NL80211_CMD_REQ_SET_REG,
10976 .doit = nl80211_req_set_reg,
10977 .policy = nl80211_policy,
10978 .flags = GENL_ADMIN_PERM,
10979 },
10980 {
10981 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10982 .doit = nl80211_get_mesh_config,
10983 .policy = nl80211_policy,
10984 /* can be retrieved by unprivileged users */
10985 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10986 NL80211_FLAG_NEED_RTNL,
10987 },
10988 {
10989 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10990 .doit = nl80211_update_mesh_config,
10991 .policy = nl80211_policy,
10992 .flags = GENL_ADMIN_PERM,
10993 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10994 NL80211_FLAG_NEED_RTNL,
10995 },
10996 {
10997 .cmd = NL80211_CMD_TRIGGER_SCAN,
10998 .doit = nl80211_trigger_scan,
10999 .policy = nl80211_policy,
11000 .flags = GENL_ADMIN_PERM,
11001 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11002 NL80211_FLAG_NEED_RTNL,
11003 },
11004 {
11005 .cmd = NL80211_CMD_ABORT_SCAN,
11006 .doit = nl80211_abort_scan,
11007 .policy = nl80211_policy,
11008 .flags = GENL_ADMIN_PERM,
11009 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11010 NL80211_FLAG_NEED_RTNL,
11011 },
11012 {
11013 .cmd = NL80211_CMD_GET_SCAN,
11014 .policy = nl80211_policy,
11015 .dumpit = nl80211_dump_scan,
11016 },
11017 {
11018 .cmd = NL80211_CMD_START_SCHED_SCAN,
11019 .doit = nl80211_start_sched_scan,
11020 .policy = nl80211_policy,
11021 .flags = GENL_ADMIN_PERM,
11022 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11023 NL80211_FLAG_NEED_RTNL,
11024 },
11025 {
11026 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11027 .doit = nl80211_stop_sched_scan,
11028 .policy = nl80211_policy,
11029 .flags = GENL_ADMIN_PERM,
11030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11031 NL80211_FLAG_NEED_RTNL,
11032 },
11033 {
11034 .cmd = NL80211_CMD_AUTHENTICATE,
11035 .doit = nl80211_authenticate,
11036 .policy = nl80211_policy,
11037 .flags = GENL_ADMIN_PERM,
11038 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11039 NL80211_FLAG_NEED_RTNL |
11040 NL80211_FLAG_CLEAR_SKB,
11041 },
11042 {
11043 .cmd = NL80211_CMD_ASSOCIATE,
11044 .doit = nl80211_associate,
11045 .policy = nl80211_policy,
11046 .flags = GENL_ADMIN_PERM,
11047 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11048 NL80211_FLAG_NEED_RTNL,
11049 },
11050 {
11051 .cmd = NL80211_CMD_DEAUTHENTICATE,
11052 .doit = nl80211_deauthenticate,
11053 .policy = nl80211_policy,
11054 .flags = GENL_ADMIN_PERM,
11055 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11056 NL80211_FLAG_NEED_RTNL,
11057 },
11058 {
11059 .cmd = NL80211_CMD_DISASSOCIATE,
11060 .doit = nl80211_disassociate,
11061 .policy = nl80211_policy,
11062 .flags = GENL_ADMIN_PERM,
11063 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11064 NL80211_FLAG_NEED_RTNL,
11065 },
11066 {
11067 .cmd = NL80211_CMD_JOIN_IBSS,
11068 .doit = nl80211_join_ibss,
11069 .policy = nl80211_policy,
11070 .flags = GENL_ADMIN_PERM,
11071 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11072 NL80211_FLAG_NEED_RTNL,
11073 },
11074 {
11075 .cmd = NL80211_CMD_LEAVE_IBSS,
11076 .doit = nl80211_leave_ibss,
11077 .policy = nl80211_policy,
11078 .flags = GENL_ADMIN_PERM,
11079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11080 NL80211_FLAG_NEED_RTNL,
11081 },
11082 #ifdef CONFIG_NL80211_TESTMODE
11083 {
11084 .cmd = NL80211_CMD_TESTMODE,
11085 .doit = nl80211_testmode_do,
11086 .dumpit = nl80211_testmode_dump,
11087 .policy = nl80211_policy,
11088 .flags = GENL_ADMIN_PERM,
11089 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11090 NL80211_FLAG_NEED_RTNL,
11091 },
11092 #endif
11093 {
11094 .cmd = NL80211_CMD_CONNECT,
11095 .doit = nl80211_connect,
11096 .policy = nl80211_policy,
11097 .flags = GENL_ADMIN_PERM,
11098 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11099 NL80211_FLAG_NEED_RTNL,
11100 },
11101 {
11102 .cmd = NL80211_CMD_DISCONNECT,
11103 .doit = nl80211_disconnect,
11104 .policy = nl80211_policy,
11105 .flags = GENL_ADMIN_PERM,
11106 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11107 NL80211_FLAG_NEED_RTNL,
11108 },
11109 {
11110 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11111 .doit = nl80211_wiphy_netns,
11112 .policy = nl80211_policy,
11113 .flags = GENL_ADMIN_PERM,
11114 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11115 NL80211_FLAG_NEED_RTNL,
11116 },
11117 {
11118 .cmd = NL80211_CMD_GET_SURVEY,
11119 .policy = nl80211_policy,
11120 .dumpit = nl80211_dump_survey,
11121 },
11122 {
11123 .cmd = NL80211_CMD_SET_PMKSA,
11124 .doit = nl80211_setdel_pmksa,
11125 .policy = nl80211_policy,
11126 .flags = GENL_ADMIN_PERM,
11127 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11128 NL80211_FLAG_NEED_RTNL,
11129 },
11130 {
11131 .cmd = NL80211_CMD_DEL_PMKSA,
11132 .doit = nl80211_setdel_pmksa,
11133 .policy = nl80211_policy,
11134 .flags = GENL_ADMIN_PERM,
11135 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11136 NL80211_FLAG_NEED_RTNL,
11137 },
11138 {
11139 .cmd = NL80211_CMD_FLUSH_PMKSA,
11140 .doit = nl80211_flush_pmksa,
11141 .policy = nl80211_policy,
11142 .flags = GENL_ADMIN_PERM,
11143 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11144 NL80211_FLAG_NEED_RTNL,
11145 },
11146 {
11147 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11148 .doit = nl80211_remain_on_channel,
11149 .policy = nl80211_policy,
11150 .flags = GENL_ADMIN_PERM,
11151 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11152 NL80211_FLAG_NEED_RTNL,
11153 },
11154 {
11155 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11156 .doit = nl80211_cancel_remain_on_channel,
11157 .policy = nl80211_policy,
11158 .flags = GENL_ADMIN_PERM,
11159 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11160 NL80211_FLAG_NEED_RTNL,
11161 },
11162 {
11163 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11164 .doit = nl80211_set_tx_bitrate_mask,
11165 .policy = nl80211_policy,
11166 .flags = GENL_ADMIN_PERM,
11167 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11168 NL80211_FLAG_NEED_RTNL,
11169 },
11170 {
11171 .cmd = NL80211_CMD_REGISTER_FRAME,
11172 .doit = nl80211_register_mgmt,
11173 .policy = nl80211_policy,
11174 .flags = GENL_ADMIN_PERM,
11175 .internal_flags = NL80211_FLAG_NEED_WDEV |
11176 NL80211_FLAG_NEED_RTNL,
11177 },
11178 {
11179 .cmd = NL80211_CMD_FRAME,
11180 .doit = nl80211_tx_mgmt,
11181 .policy = nl80211_policy,
11182 .flags = GENL_ADMIN_PERM,
11183 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11184 NL80211_FLAG_NEED_RTNL,
11185 },
11186 {
11187 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11188 .doit = nl80211_tx_mgmt_cancel_wait,
11189 .policy = nl80211_policy,
11190 .flags = GENL_ADMIN_PERM,
11191 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11192 NL80211_FLAG_NEED_RTNL,
11193 },
11194 {
11195 .cmd = NL80211_CMD_SET_POWER_SAVE,
11196 .doit = nl80211_set_power_save,
11197 .policy = nl80211_policy,
11198 .flags = GENL_ADMIN_PERM,
11199 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11200 NL80211_FLAG_NEED_RTNL,
11201 },
11202 {
11203 .cmd = NL80211_CMD_GET_POWER_SAVE,
11204 .doit = nl80211_get_power_save,
11205 .policy = nl80211_policy,
11206 /* can be retrieved by unprivileged users */
11207 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11208 NL80211_FLAG_NEED_RTNL,
11209 },
11210 {
11211 .cmd = NL80211_CMD_SET_CQM,
11212 .doit = nl80211_set_cqm,
11213 .policy = nl80211_policy,
11214 .flags = GENL_ADMIN_PERM,
11215 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11216 NL80211_FLAG_NEED_RTNL,
11217 },
11218 {
11219 .cmd = NL80211_CMD_SET_CHANNEL,
11220 .doit = nl80211_set_channel,
11221 .policy = nl80211_policy,
11222 .flags = GENL_ADMIN_PERM,
11223 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11224 NL80211_FLAG_NEED_RTNL,
11225 },
11226 {
11227 .cmd = NL80211_CMD_SET_WDS_PEER,
11228 .doit = nl80211_set_wds_peer,
11229 .policy = nl80211_policy,
11230 .flags = GENL_ADMIN_PERM,
11231 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11232 NL80211_FLAG_NEED_RTNL,
11233 },
11234 {
11235 .cmd = NL80211_CMD_JOIN_MESH,
11236 .doit = nl80211_join_mesh,
11237 .policy = nl80211_policy,
11238 .flags = GENL_ADMIN_PERM,
11239 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11240 NL80211_FLAG_NEED_RTNL,
11241 },
11242 {
11243 .cmd = NL80211_CMD_LEAVE_MESH,
11244 .doit = nl80211_leave_mesh,
11245 .policy = nl80211_policy,
11246 .flags = GENL_ADMIN_PERM,
11247 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11248 NL80211_FLAG_NEED_RTNL,
11249 },
11250 {
11251 .cmd = NL80211_CMD_JOIN_OCB,
11252 .doit = nl80211_join_ocb,
11253 .policy = nl80211_policy,
11254 .flags = GENL_ADMIN_PERM,
11255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11256 NL80211_FLAG_NEED_RTNL,
11257 },
11258 {
11259 .cmd = NL80211_CMD_LEAVE_OCB,
11260 .doit = nl80211_leave_ocb,
11261 .policy = nl80211_policy,
11262 .flags = GENL_ADMIN_PERM,
11263 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11264 NL80211_FLAG_NEED_RTNL,
11265 },
11266 #ifdef CONFIG_PM
11267 {
11268 .cmd = NL80211_CMD_GET_WOWLAN,
11269 .doit = nl80211_get_wowlan,
11270 .policy = nl80211_policy,
11271 /* can be retrieved by unprivileged users */
11272 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11273 NL80211_FLAG_NEED_RTNL,
11274 },
11275 {
11276 .cmd = NL80211_CMD_SET_WOWLAN,
11277 .doit = nl80211_set_wowlan,
11278 .policy = nl80211_policy,
11279 .flags = GENL_ADMIN_PERM,
11280 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11281 NL80211_FLAG_NEED_RTNL,
11282 },
11283 #endif
11284 {
11285 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11286 .doit = nl80211_set_rekey_data,
11287 .policy = nl80211_policy,
11288 .flags = GENL_ADMIN_PERM,
11289 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11290 NL80211_FLAG_NEED_RTNL |
11291 NL80211_FLAG_CLEAR_SKB,
11292 },
11293 {
11294 .cmd = NL80211_CMD_TDLS_MGMT,
11295 .doit = nl80211_tdls_mgmt,
11296 .policy = nl80211_policy,
11297 .flags = GENL_ADMIN_PERM,
11298 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11299 NL80211_FLAG_NEED_RTNL,
11300 },
11301 {
11302 .cmd = NL80211_CMD_TDLS_OPER,
11303 .doit = nl80211_tdls_oper,
11304 .policy = nl80211_policy,
11305 .flags = GENL_ADMIN_PERM,
11306 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11307 NL80211_FLAG_NEED_RTNL,
11308 },
11309 {
11310 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11311 .doit = nl80211_register_unexpected_frame,
11312 .policy = nl80211_policy,
11313 .flags = GENL_ADMIN_PERM,
11314 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11315 NL80211_FLAG_NEED_RTNL,
11316 },
11317 {
11318 .cmd = NL80211_CMD_PROBE_CLIENT,
11319 .doit = nl80211_probe_client,
11320 .policy = nl80211_policy,
11321 .flags = GENL_ADMIN_PERM,
11322 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11323 NL80211_FLAG_NEED_RTNL,
11324 },
11325 {
11326 .cmd = NL80211_CMD_REGISTER_BEACONS,
11327 .doit = nl80211_register_beacons,
11328 .policy = nl80211_policy,
11329 .flags = GENL_ADMIN_PERM,
11330 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11331 NL80211_FLAG_NEED_RTNL,
11332 },
11333 {
11334 .cmd = NL80211_CMD_SET_NOACK_MAP,
11335 .doit = nl80211_set_noack_map,
11336 .policy = nl80211_policy,
11337 .flags = GENL_ADMIN_PERM,
11338 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11339 NL80211_FLAG_NEED_RTNL,
11340 },
11341 {
11342 .cmd = NL80211_CMD_START_P2P_DEVICE,
11343 .doit = nl80211_start_p2p_device,
11344 .policy = nl80211_policy,
11345 .flags = GENL_ADMIN_PERM,
11346 .internal_flags = NL80211_FLAG_NEED_WDEV |
11347 NL80211_FLAG_NEED_RTNL,
11348 },
11349 {
11350 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11351 .doit = nl80211_stop_p2p_device,
11352 .policy = nl80211_policy,
11353 .flags = GENL_ADMIN_PERM,
11354 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11355 NL80211_FLAG_NEED_RTNL,
11356 },
11357 {
11358 .cmd = NL80211_CMD_SET_MCAST_RATE,
11359 .doit = nl80211_set_mcast_rate,
11360 .policy = nl80211_policy,
11361 .flags = GENL_ADMIN_PERM,
11362 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11363 NL80211_FLAG_NEED_RTNL,
11364 },
11365 {
11366 .cmd = NL80211_CMD_SET_MAC_ACL,
11367 .doit = nl80211_set_mac_acl,
11368 .policy = nl80211_policy,
11369 .flags = GENL_ADMIN_PERM,
11370 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11371 NL80211_FLAG_NEED_RTNL,
11372 },
11373 {
11374 .cmd = NL80211_CMD_RADAR_DETECT,
11375 .doit = nl80211_start_radar_detection,
11376 .policy = nl80211_policy,
11377 .flags = GENL_ADMIN_PERM,
11378 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11379 NL80211_FLAG_NEED_RTNL,
11380 },
11381 {
11382 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11383 .doit = nl80211_get_protocol_features,
11384 .policy = nl80211_policy,
11385 },
11386 {
11387 .cmd = NL80211_CMD_UPDATE_FT_IES,
11388 .doit = nl80211_update_ft_ies,
11389 .policy = nl80211_policy,
11390 .flags = GENL_ADMIN_PERM,
11391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11392 NL80211_FLAG_NEED_RTNL,
11393 },
11394 {
11395 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11396 .doit = nl80211_crit_protocol_start,
11397 .policy = nl80211_policy,
11398 .flags = GENL_ADMIN_PERM,
11399 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11400 NL80211_FLAG_NEED_RTNL,
11401 },
11402 {
11403 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11404 .doit = nl80211_crit_protocol_stop,
11405 .policy = nl80211_policy,
11406 .flags = GENL_ADMIN_PERM,
11407 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11408 NL80211_FLAG_NEED_RTNL,
11409 },
11410 {
11411 .cmd = NL80211_CMD_GET_COALESCE,
11412 .doit = nl80211_get_coalesce,
11413 .policy = nl80211_policy,
11414 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11415 NL80211_FLAG_NEED_RTNL,
11416 },
11417 {
11418 .cmd = NL80211_CMD_SET_COALESCE,
11419 .doit = nl80211_set_coalesce,
11420 .policy = nl80211_policy,
11421 .flags = GENL_ADMIN_PERM,
11422 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11423 NL80211_FLAG_NEED_RTNL,
11424 },
11425 {
11426 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11427 .doit = nl80211_channel_switch,
11428 .policy = nl80211_policy,
11429 .flags = GENL_ADMIN_PERM,
11430 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11431 NL80211_FLAG_NEED_RTNL,
11432 },
11433 {
11434 .cmd = NL80211_CMD_VENDOR,
11435 .doit = nl80211_vendor_cmd,
11436 .dumpit = nl80211_vendor_cmd_dump,
11437 .policy = nl80211_policy,
11438 .flags = GENL_ADMIN_PERM,
11439 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11440 NL80211_FLAG_NEED_RTNL,
11441 },
11442 {
11443 .cmd = NL80211_CMD_SET_QOS_MAP,
11444 .doit = nl80211_set_qos_map,
11445 .policy = nl80211_policy,
11446 .flags = GENL_ADMIN_PERM,
11447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11448 NL80211_FLAG_NEED_RTNL,
11449 },
11450 {
11451 .cmd = NL80211_CMD_ADD_TX_TS,
11452 .doit = nl80211_add_tx_ts,
11453 .policy = nl80211_policy,
11454 .flags = GENL_ADMIN_PERM,
11455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11456 NL80211_FLAG_NEED_RTNL,
11457 },
11458 {
11459 .cmd = NL80211_CMD_DEL_TX_TS,
11460 .doit = nl80211_del_tx_ts,
11461 .policy = nl80211_policy,
11462 .flags = GENL_ADMIN_PERM,
11463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11464 NL80211_FLAG_NEED_RTNL,
11465 },
11466 {
11467 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11468 .doit = nl80211_tdls_channel_switch,
11469 .policy = nl80211_policy,
11470 .flags = GENL_ADMIN_PERM,
11471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11472 NL80211_FLAG_NEED_RTNL,
11473 },
11474 {
11475 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11476 .doit = nl80211_tdls_cancel_channel_switch,
11477 .policy = nl80211_policy,
11478 .flags = GENL_ADMIN_PERM,
11479 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11480 NL80211_FLAG_NEED_RTNL,
11481 },
11482 };
11483
11484 /* notification functions */
11485
11486 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11487 enum nl80211_commands cmd)
11488 {
11489 struct sk_buff *msg;
11490 struct nl80211_dump_wiphy_state state = {};
11491
11492 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11493 cmd != NL80211_CMD_DEL_WIPHY);
11494
11495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11496 if (!msg)
11497 return;
11498
11499 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11500 nlmsg_free(msg);
11501 return;
11502 }
11503
11504 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11505 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11506 }
11507
11508 static int nl80211_add_scan_req(struct sk_buff *msg,
11509 struct cfg80211_registered_device *rdev)
11510 {
11511 struct cfg80211_scan_request *req = rdev->scan_req;
11512 struct nlattr *nest;
11513 int i;
11514
11515 if (WARN_ON(!req))
11516 return 0;
11517
11518 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11519 if (!nest)
11520 goto nla_put_failure;
11521 for (i = 0; i < req->n_ssids; i++) {
11522 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11523 goto nla_put_failure;
11524 }
11525 nla_nest_end(msg, nest);
11526
11527 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11528 if (!nest)
11529 goto nla_put_failure;
11530 for (i = 0; i < req->n_channels; i++) {
11531 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11532 goto nla_put_failure;
11533 }
11534 nla_nest_end(msg, nest);
11535
11536 if (req->ie &&
11537 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11538 goto nla_put_failure;
11539
11540 if (req->flags &&
11541 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11542 goto nla_put_failure;
11543
11544 return 0;
11545 nla_put_failure:
11546 return -ENOBUFS;
11547 }
11548
11549 static int nl80211_send_scan_msg(struct sk_buff *msg,
11550 struct cfg80211_registered_device *rdev,
11551 struct wireless_dev *wdev,
11552 u32 portid, u32 seq, int flags,
11553 u32 cmd)
11554 {
11555 void *hdr;
11556
11557 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11558 if (!hdr)
11559 return -1;
11560
11561 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11562 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11563 wdev->netdev->ifindex)) ||
11564 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11565 goto nla_put_failure;
11566
11567 /* ignore errors and send incomplete event anyway */
11568 nl80211_add_scan_req(msg, rdev);
11569
11570 genlmsg_end(msg, hdr);
11571 return 0;
11572
11573 nla_put_failure:
11574 genlmsg_cancel(msg, hdr);
11575 return -EMSGSIZE;
11576 }
11577
11578 static int
11579 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11580 struct cfg80211_registered_device *rdev,
11581 struct net_device *netdev,
11582 u32 portid, u32 seq, int flags, u32 cmd)
11583 {
11584 void *hdr;
11585
11586 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11587 if (!hdr)
11588 return -1;
11589
11590 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11591 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11592 goto nla_put_failure;
11593
11594 genlmsg_end(msg, hdr);
11595 return 0;
11596
11597 nla_put_failure:
11598 genlmsg_cancel(msg, hdr);
11599 return -EMSGSIZE;
11600 }
11601
11602 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11603 struct wireless_dev *wdev)
11604 {
11605 struct sk_buff *msg;
11606
11607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11608 if (!msg)
11609 return;
11610
11611 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11612 NL80211_CMD_TRIGGER_SCAN) < 0) {
11613 nlmsg_free(msg);
11614 return;
11615 }
11616
11617 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11618 NL80211_MCGRP_SCAN, GFP_KERNEL);
11619 }
11620
11621 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11622 struct wireless_dev *wdev, bool aborted)
11623 {
11624 struct sk_buff *msg;
11625
11626 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11627 if (!msg)
11628 return NULL;
11629
11630 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11631 aborted ? NL80211_CMD_SCAN_ABORTED :
11632 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11633 nlmsg_free(msg);
11634 return NULL;
11635 }
11636
11637 return msg;
11638 }
11639
11640 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11641 struct sk_buff *msg)
11642 {
11643 if (!msg)
11644 return;
11645
11646 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11647 NL80211_MCGRP_SCAN, GFP_KERNEL);
11648 }
11649
11650 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11651 struct net_device *netdev)
11652 {
11653 struct sk_buff *msg;
11654
11655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11656 if (!msg)
11657 return;
11658
11659 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11660 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11661 nlmsg_free(msg);
11662 return;
11663 }
11664
11665 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11666 NL80211_MCGRP_SCAN, GFP_KERNEL);
11667 }
11668
11669 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11670 struct net_device *netdev, u32 cmd)
11671 {
11672 struct sk_buff *msg;
11673
11674 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11675 if (!msg)
11676 return;
11677
11678 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11679 nlmsg_free(msg);
11680 return;
11681 }
11682
11683 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11684 NL80211_MCGRP_SCAN, GFP_KERNEL);
11685 }
11686
11687 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11688 struct regulatory_request *request)
11689 {
11690 /* Userspace can always count this one always being set */
11691 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11692 goto nla_put_failure;
11693
11694 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11695 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11696 NL80211_REGDOM_TYPE_WORLD))
11697 goto nla_put_failure;
11698 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11699 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11700 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11701 goto nla_put_failure;
11702 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11703 request->intersect) {
11704 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11705 NL80211_REGDOM_TYPE_INTERSECTION))
11706 goto nla_put_failure;
11707 } else {
11708 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11709 NL80211_REGDOM_TYPE_COUNTRY) ||
11710 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11711 request->alpha2))
11712 goto nla_put_failure;
11713 }
11714
11715 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11716 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11717
11718 if (wiphy &&
11719 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11720 goto nla_put_failure;
11721
11722 if (wiphy &&
11723 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11724 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11725 goto nla_put_failure;
11726 }
11727
11728 return true;
11729
11730 nla_put_failure:
11731 return false;
11732 }
11733
11734 /*
11735 * This can happen on global regulatory changes or device specific settings
11736 * based on custom regulatory domains.
11737 */
11738 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11739 struct regulatory_request *request)
11740 {
11741 struct sk_buff *msg;
11742 void *hdr;
11743
11744 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11745 if (!msg)
11746 return;
11747
11748 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11749 if (!hdr) {
11750 nlmsg_free(msg);
11751 return;
11752 }
11753
11754 if (nl80211_reg_change_event_fill(msg, request) == false)
11755 goto nla_put_failure;
11756
11757 genlmsg_end(msg, hdr);
11758
11759 rcu_read_lock();
11760 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11761 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11762 rcu_read_unlock();
11763
11764 return;
11765
11766 nla_put_failure:
11767 genlmsg_cancel(msg, hdr);
11768 nlmsg_free(msg);
11769 }
11770
11771 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11772 struct net_device *netdev,
11773 const u8 *buf, size_t len,
11774 enum nl80211_commands cmd, gfp_t gfp,
11775 int uapsd_queues)
11776 {
11777 struct sk_buff *msg;
11778 void *hdr;
11779
11780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11781 if (!msg)
11782 return;
11783
11784 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11785 if (!hdr) {
11786 nlmsg_free(msg);
11787 return;
11788 }
11789
11790 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11791 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11792 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11793 goto nla_put_failure;
11794
11795 if (uapsd_queues >= 0) {
11796 struct nlattr *nla_wmm =
11797 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11798 if (!nla_wmm)
11799 goto nla_put_failure;
11800
11801 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11802 uapsd_queues))
11803 goto nla_put_failure;
11804
11805 nla_nest_end(msg, nla_wmm);
11806 }
11807
11808 genlmsg_end(msg, hdr);
11809
11810 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11811 NL80211_MCGRP_MLME, gfp);
11812 return;
11813
11814 nla_put_failure:
11815 genlmsg_cancel(msg, hdr);
11816 nlmsg_free(msg);
11817 }
11818
11819 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11820 struct net_device *netdev, const u8 *buf,
11821 size_t len, gfp_t gfp)
11822 {
11823 nl80211_send_mlme_event(rdev, netdev, buf, len,
11824 NL80211_CMD_AUTHENTICATE, gfp, -1);
11825 }
11826
11827 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11828 struct net_device *netdev, const u8 *buf,
11829 size_t len, gfp_t gfp, int uapsd_queues)
11830 {
11831 nl80211_send_mlme_event(rdev, netdev, buf, len,
11832 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11833 }
11834
11835 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11836 struct net_device *netdev, const u8 *buf,
11837 size_t len, gfp_t gfp)
11838 {
11839 nl80211_send_mlme_event(rdev, netdev, buf, len,
11840 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11841 }
11842
11843 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11844 struct net_device *netdev, const u8 *buf,
11845 size_t len, gfp_t gfp)
11846 {
11847 nl80211_send_mlme_event(rdev, netdev, buf, len,
11848 NL80211_CMD_DISASSOCIATE, gfp, -1);
11849 }
11850
11851 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11852 size_t len)
11853 {
11854 struct wireless_dev *wdev = dev->ieee80211_ptr;
11855 struct wiphy *wiphy = wdev->wiphy;
11856 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11857 const struct ieee80211_mgmt *mgmt = (void *)buf;
11858 u32 cmd;
11859
11860 if (WARN_ON(len < 2))
11861 return;
11862
11863 if (ieee80211_is_deauth(mgmt->frame_control))
11864 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11865 else
11866 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11867
11868 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11869 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11870 }
11871 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11872
11873 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11874 struct net_device *netdev, int cmd,
11875 const u8 *addr, gfp_t gfp)
11876 {
11877 struct sk_buff *msg;
11878 void *hdr;
11879
11880 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11881 if (!msg)
11882 return;
11883
11884 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11885 if (!hdr) {
11886 nlmsg_free(msg);
11887 return;
11888 }
11889
11890 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11891 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11892 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11893 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11894 goto nla_put_failure;
11895
11896 genlmsg_end(msg, hdr);
11897
11898 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11899 NL80211_MCGRP_MLME, gfp);
11900 return;
11901
11902 nla_put_failure:
11903 genlmsg_cancel(msg, hdr);
11904 nlmsg_free(msg);
11905 }
11906
11907 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11908 struct net_device *netdev, const u8 *addr,
11909 gfp_t gfp)
11910 {
11911 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11912 addr, gfp);
11913 }
11914
11915 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11916 struct net_device *netdev, const u8 *addr,
11917 gfp_t gfp)
11918 {
11919 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11920 addr, gfp);
11921 }
11922
11923 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11924 struct net_device *netdev, const u8 *bssid,
11925 const u8 *req_ie, size_t req_ie_len,
11926 const u8 *resp_ie, size_t resp_ie_len,
11927 u16 status, gfp_t gfp)
11928 {
11929 struct sk_buff *msg;
11930 void *hdr;
11931
11932 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11933 if (!msg)
11934 return;
11935
11936 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11937 if (!hdr) {
11938 nlmsg_free(msg);
11939 return;
11940 }
11941
11942 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11943 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11944 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11945 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11946 (req_ie &&
11947 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11948 (resp_ie &&
11949 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11950 goto nla_put_failure;
11951
11952 genlmsg_end(msg, hdr);
11953
11954 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11955 NL80211_MCGRP_MLME, gfp);
11956 return;
11957
11958 nla_put_failure:
11959 genlmsg_cancel(msg, hdr);
11960 nlmsg_free(msg);
11961
11962 }
11963
11964 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11965 struct net_device *netdev, const u8 *bssid,
11966 const u8 *req_ie, size_t req_ie_len,
11967 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11968 {
11969 struct sk_buff *msg;
11970 void *hdr;
11971
11972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11973 if (!msg)
11974 return;
11975
11976 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11977 if (!hdr) {
11978 nlmsg_free(msg);
11979 return;
11980 }
11981
11982 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11983 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11984 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11985 (req_ie &&
11986 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11987 (resp_ie &&
11988 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11989 goto nla_put_failure;
11990
11991 genlmsg_end(msg, hdr);
11992
11993 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11994 NL80211_MCGRP_MLME, gfp);
11995 return;
11996
11997 nla_put_failure:
11998 genlmsg_cancel(msg, hdr);
11999 nlmsg_free(msg);
12000
12001 }
12002
12003 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12004 struct net_device *netdev, u16 reason,
12005 const u8 *ie, size_t ie_len, bool from_ap)
12006 {
12007 struct sk_buff *msg;
12008 void *hdr;
12009
12010 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12011 if (!msg)
12012 return;
12013
12014 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12015 if (!hdr) {
12016 nlmsg_free(msg);
12017 return;
12018 }
12019
12020 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12021 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12022 (from_ap && reason &&
12023 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12024 (from_ap &&
12025 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12026 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12027 goto nla_put_failure;
12028
12029 genlmsg_end(msg, hdr);
12030
12031 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12032 NL80211_MCGRP_MLME, GFP_KERNEL);
12033 return;
12034
12035 nla_put_failure:
12036 genlmsg_cancel(msg, hdr);
12037 nlmsg_free(msg);
12038
12039 }
12040
12041 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12042 struct net_device *netdev, const u8 *bssid,
12043 gfp_t gfp)
12044 {
12045 struct sk_buff *msg;
12046 void *hdr;
12047
12048 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12049 if (!msg)
12050 return;
12051
12052 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12053 if (!hdr) {
12054 nlmsg_free(msg);
12055 return;
12056 }
12057
12058 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12059 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12060 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12061 goto nla_put_failure;
12062
12063 genlmsg_end(msg, hdr);
12064
12065 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12066 NL80211_MCGRP_MLME, gfp);
12067 return;
12068
12069 nla_put_failure:
12070 genlmsg_cancel(msg, hdr);
12071 nlmsg_free(msg);
12072 }
12073
12074 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12075 const u8* ie, u8 ie_len, gfp_t gfp)
12076 {
12077 struct wireless_dev *wdev = dev->ieee80211_ptr;
12078 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12079 struct sk_buff *msg;
12080 void *hdr;
12081
12082 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12083 return;
12084
12085 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12086
12087 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12088 if (!msg)
12089 return;
12090
12091 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12092 if (!hdr) {
12093 nlmsg_free(msg);
12094 return;
12095 }
12096
12097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12098 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12099 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12100 (ie_len && ie &&
12101 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12102 goto nla_put_failure;
12103
12104 genlmsg_end(msg, hdr);
12105
12106 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12107 NL80211_MCGRP_MLME, gfp);
12108 return;
12109
12110 nla_put_failure:
12111 genlmsg_cancel(msg, hdr);
12112 nlmsg_free(msg);
12113 }
12114 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12115
12116 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12117 struct net_device *netdev, const u8 *addr,
12118 enum nl80211_key_type key_type, int key_id,
12119 const u8 *tsc, gfp_t gfp)
12120 {
12121 struct sk_buff *msg;
12122 void *hdr;
12123
12124 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12125 if (!msg)
12126 return;
12127
12128 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12129 if (!hdr) {
12130 nlmsg_free(msg);
12131 return;
12132 }
12133
12134 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12135 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12136 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12137 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12138 (key_id != -1 &&
12139 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12140 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
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 nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12155 struct ieee80211_channel *channel_before,
12156 struct ieee80211_channel *channel_after)
12157 {
12158 struct sk_buff *msg;
12159 void *hdr;
12160 struct nlattr *nl_freq;
12161
12162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12163 if (!msg)
12164 return;
12165
12166 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12167 if (!hdr) {
12168 nlmsg_free(msg);
12169 return;
12170 }
12171
12172 /*
12173 * Since we are applying the beacon hint to a wiphy we know its
12174 * wiphy_idx is valid
12175 */
12176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12177 goto nla_put_failure;
12178
12179 /* Before */
12180 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12181 if (!nl_freq)
12182 goto nla_put_failure;
12183 if (nl80211_msg_put_channel(msg, channel_before, false))
12184 goto nla_put_failure;
12185 nla_nest_end(msg, nl_freq);
12186
12187 /* After */
12188 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12189 if (!nl_freq)
12190 goto nla_put_failure;
12191 if (nl80211_msg_put_channel(msg, channel_after, false))
12192 goto nla_put_failure;
12193 nla_nest_end(msg, nl_freq);
12194
12195 genlmsg_end(msg, hdr);
12196
12197 rcu_read_lock();
12198 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12199 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12200 rcu_read_unlock();
12201
12202 return;
12203
12204 nla_put_failure:
12205 genlmsg_cancel(msg, hdr);
12206 nlmsg_free(msg);
12207 }
12208
12209 static void nl80211_send_remain_on_chan_event(
12210 int cmd, struct cfg80211_registered_device *rdev,
12211 struct wireless_dev *wdev, u64 cookie,
12212 struct ieee80211_channel *chan,
12213 unsigned int duration, gfp_t gfp)
12214 {
12215 struct sk_buff *msg;
12216 void *hdr;
12217
12218 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12219 if (!msg)
12220 return;
12221
12222 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12223 if (!hdr) {
12224 nlmsg_free(msg);
12225 return;
12226 }
12227
12228 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12229 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12230 wdev->netdev->ifindex)) ||
12231 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12232 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12233 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12234 NL80211_CHAN_NO_HT) ||
12235 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
12236 goto nla_put_failure;
12237
12238 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12239 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12240 goto nla_put_failure;
12241
12242 genlmsg_end(msg, hdr);
12243
12244 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12245 NL80211_MCGRP_MLME, gfp);
12246 return;
12247
12248 nla_put_failure:
12249 genlmsg_cancel(msg, hdr);
12250 nlmsg_free(msg);
12251 }
12252
12253 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12254 struct ieee80211_channel *chan,
12255 unsigned int duration, gfp_t gfp)
12256 {
12257 struct wiphy *wiphy = wdev->wiphy;
12258 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12259
12260 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12261 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12262 rdev, wdev, cookie, chan,
12263 duration, gfp);
12264 }
12265 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12266
12267 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12268 struct ieee80211_channel *chan,
12269 gfp_t gfp)
12270 {
12271 struct wiphy *wiphy = wdev->wiphy;
12272 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12273
12274 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12275 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12276 rdev, wdev, cookie, chan, 0, gfp);
12277 }
12278 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12279
12280 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12281 struct station_info *sinfo, gfp_t gfp)
12282 {
12283 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12285 struct sk_buff *msg;
12286
12287 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12288
12289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12290 if (!msg)
12291 return;
12292
12293 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12294 rdev, dev, mac_addr, sinfo) < 0) {
12295 nlmsg_free(msg);
12296 return;
12297 }
12298
12299 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12300 NL80211_MCGRP_MLME, gfp);
12301 }
12302 EXPORT_SYMBOL(cfg80211_new_sta);
12303
12304 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12305 struct station_info *sinfo, gfp_t gfp)
12306 {
12307 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12308 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12309 struct sk_buff *msg;
12310 struct station_info empty_sinfo = {};
12311
12312 if (!sinfo)
12313 sinfo = &empty_sinfo;
12314
12315 trace_cfg80211_del_sta(dev, mac_addr);
12316
12317 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12318 if (!msg)
12319 return;
12320
12321 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12322 rdev, dev, mac_addr, sinfo) < 0) {
12323 nlmsg_free(msg);
12324 return;
12325 }
12326
12327 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12328 NL80211_MCGRP_MLME, gfp);
12329 }
12330 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12331
12332 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12333 enum nl80211_connect_failed_reason reason,
12334 gfp_t gfp)
12335 {
12336 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12337 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12338 struct sk_buff *msg;
12339 void *hdr;
12340
12341 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12342 if (!msg)
12343 return;
12344
12345 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12346 if (!hdr) {
12347 nlmsg_free(msg);
12348 return;
12349 }
12350
12351 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12352 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12353 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12354 goto nla_put_failure;
12355
12356 genlmsg_end(msg, hdr);
12357
12358 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12359 NL80211_MCGRP_MLME, gfp);
12360 return;
12361
12362 nla_put_failure:
12363 genlmsg_cancel(msg, hdr);
12364 nlmsg_free(msg);
12365 }
12366 EXPORT_SYMBOL(cfg80211_conn_failed);
12367
12368 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12369 const u8 *addr, gfp_t gfp)
12370 {
12371 struct wireless_dev *wdev = dev->ieee80211_ptr;
12372 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12373 struct sk_buff *msg;
12374 void *hdr;
12375 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12376
12377 if (!nlportid)
12378 return false;
12379
12380 msg = nlmsg_new(100, gfp);
12381 if (!msg)
12382 return true;
12383
12384 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12385 if (!hdr) {
12386 nlmsg_free(msg);
12387 return true;
12388 }
12389
12390 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12391 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12392 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12393 goto nla_put_failure;
12394
12395 genlmsg_end(msg, hdr);
12396 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12397 return true;
12398
12399 nla_put_failure:
12400 genlmsg_cancel(msg, hdr);
12401 nlmsg_free(msg);
12402 return true;
12403 }
12404
12405 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12406 const u8 *addr, gfp_t gfp)
12407 {
12408 struct wireless_dev *wdev = dev->ieee80211_ptr;
12409 bool ret;
12410
12411 trace_cfg80211_rx_spurious_frame(dev, addr);
12412
12413 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12414 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12415 trace_cfg80211_return_bool(false);
12416 return false;
12417 }
12418 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12419 addr, gfp);
12420 trace_cfg80211_return_bool(ret);
12421 return ret;
12422 }
12423 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12424
12425 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12426 const u8 *addr, gfp_t gfp)
12427 {
12428 struct wireless_dev *wdev = dev->ieee80211_ptr;
12429 bool ret;
12430
12431 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12432
12433 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12434 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12435 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12436 trace_cfg80211_return_bool(false);
12437 return false;
12438 }
12439 ret = __nl80211_unexpected_frame(dev,
12440 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12441 addr, gfp);
12442 trace_cfg80211_return_bool(ret);
12443 return ret;
12444 }
12445 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12446
12447 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12448 struct wireless_dev *wdev, u32 nlportid,
12449 int freq, int sig_dbm,
12450 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12451 {
12452 struct net_device *netdev = wdev->netdev;
12453 struct sk_buff *msg;
12454 void *hdr;
12455
12456 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12457 if (!msg)
12458 return -ENOMEM;
12459
12460 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12461 if (!hdr) {
12462 nlmsg_free(msg);
12463 return -ENOMEM;
12464 }
12465
12466 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12467 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12468 netdev->ifindex)) ||
12469 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12470 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12471 (sig_dbm &&
12472 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12473 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12474 (flags &&
12475 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12476 goto nla_put_failure;
12477
12478 genlmsg_end(msg, hdr);
12479
12480 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12481
12482 nla_put_failure:
12483 genlmsg_cancel(msg, hdr);
12484 nlmsg_free(msg);
12485 return -ENOBUFS;
12486 }
12487
12488 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12489 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12490 {
12491 struct wiphy *wiphy = wdev->wiphy;
12492 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12493 struct net_device *netdev = wdev->netdev;
12494 struct sk_buff *msg;
12495 void *hdr;
12496
12497 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12498
12499 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12500 if (!msg)
12501 return;
12502
12503 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12504 if (!hdr) {
12505 nlmsg_free(msg);
12506 return;
12507 }
12508
12509 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12510 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12511 netdev->ifindex)) ||
12512 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12513 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12514 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12515 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12516 goto nla_put_failure;
12517
12518 genlmsg_end(msg, hdr);
12519
12520 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12521 NL80211_MCGRP_MLME, gfp);
12522 return;
12523
12524 nla_put_failure:
12525 genlmsg_cancel(msg, hdr);
12526 nlmsg_free(msg);
12527 }
12528 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12529
12530 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12531 const char *mac, gfp_t gfp)
12532 {
12533 struct wireless_dev *wdev = dev->ieee80211_ptr;
12534 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12535 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12536 void **cb;
12537
12538 if (!msg)
12539 return NULL;
12540
12541 cb = (void **)msg->cb;
12542
12543 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12544 if (!cb[0]) {
12545 nlmsg_free(msg);
12546 return NULL;
12547 }
12548
12549 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12550 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12551 goto nla_put_failure;
12552
12553 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12554 goto nla_put_failure;
12555
12556 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12557 if (!cb[1])
12558 goto nla_put_failure;
12559
12560 cb[2] = rdev;
12561
12562 return msg;
12563 nla_put_failure:
12564 nlmsg_free(msg);
12565 return NULL;
12566 }
12567
12568 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12569 {
12570 void **cb = (void **)msg->cb;
12571 struct cfg80211_registered_device *rdev = cb[2];
12572
12573 nla_nest_end(msg, cb[1]);
12574 genlmsg_end(msg, cb[0]);
12575
12576 memset(msg->cb, 0, sizeof(msg->cb));
12577
12578 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12579 NL80211_MCGRP_MLME, gfp);
12580 }
12581
12582 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12583 enum nl80211_cqm_rssi_threshold_event rssi_event,
12584 gfp_t gfp)
12585 {
12586 struct sk_buff *msg;
12587
12588 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12589
12590 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12591 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12592 return;
12593
12594 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12595 if (!msg)
12596 return;
12597
12598 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12599 rssi_event))
12600 goto nla_put_failure;
12601
12602 cfg80211_send_cqm(msg, gfp);
12603
12604 return;
12605
12606 nla_put_failure:
12607 nlmsg_free(msg);
12608 }
12609 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12610
12611 void cfg80211_cqm_txe_notify(struct net_device *dev,
12612 const u8 *peer, u32 num_packets,
12613 u32 rate, u32 intvl, gfp_t gfp)
12614 {
12615 struct sk_buff *msg;
12616
12617 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12618 if (!msg)
12619 return;
12620
12621 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12622 goto nla_put_failure;
12623
12624 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12625 goto nla_put_failure;
12626
12627 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12628 goto nla_put_failure;
12629
12630 cfg80211_send_cqm(msg, gfp);
12631 return;
12632
12633 nla_put_failure:
12634 nlmsg_free(msg);
12635 }
12636 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12637
12638 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12639 const u8 *peer, u32 num_packets, gfp_t gfp)
12640 {
12641 struct sk_buff *msg;
12642
12643 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12644
12645 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12646 if (!msg)
12647 return;
12648
12649 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12650 goto nla_put_failure;
12651
12652 cfg80211_send_cqm(msg, gfp);
12653 return;
12654
12655 nla_put_failure:
12656 nlmsg_free(msg);
12657 }
12658 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12659
12660 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12661 {
12662 struct sk_buff *msg;
12663
12664 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12665 if (!msg)
12666 return;
12667
12668 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12669 goto nla_put_failure;
12670
12671 cfg80211_send_cqm(msg, gfp);
12672 return;
12673
12674 nla_put_failure:
12675 nlmsg_free(msg);
12676 }
12677 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12678
12679 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12680 struct net_device *netdev, const u8 *bssid,
12681 const u8 *replay_ctr, gfp_t gfp)
12682 {
12683 struct sk_buff *msg;
12684 struct nlattr *rekey_attr;
12685 void *hdr;
12686
12687 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12688 if (!msg)
12689 return;
12690
12691 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12692 if (!hdr) {
12693 nlmsg_free(msg);
12694 return;
12695 }
12696
12697 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12698 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12699 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12700 goto nla_put_failure;
12701
12702 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12703 if (!rekey_attr)
12704 goto nla_put_failure;
12705
12706 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12707 NL80211_REPLAY_CTR_LEN, replay_ctr))
12708 goto nla_put_failure;
12709
12710 nla_nest_end(msg, rekey_attr);
12711
12712 genlmsg_end(msg, hdr);
12713
12714 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12715 NL80211_MCGRP_MLME, gfp);
12716 return;
12717
12718 nla_put_failure:
12719 genlmsg_cancel(msg, hdr);
12720 nlmsg_free(msg);
12721 }
12722
12723 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12724 const u8 *replay_ctr, gfp_t gfp)
12725 {
12726 struct wireless_dev *wdev = dev->ieee80211_ptr;
12727 struct wiphy *wiphy = wdev->wiphy;
12728 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12729
12730 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12731 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12732 }
12733 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12734
12735 static void
12736 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12737 struct net_device *netdev, int index,
12738 const u8 *bssid, bool preauth, gfp_t gfp)
12739 {
12740 struct sk_buff *msg;
12741 struct nlattr *attr;
12742 void *hdr;
12743
12744 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12745 if (!msg)
12746 return;
12747
12748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12749 if (!hdr) {
12750 nlmsg_free(msg);
12751 return;
12752 }
12753
12754 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12755 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12756 goto nla_put_failure;
12757
12758 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12759 if (!attr)
12760 goto nla_put_failure;
12761
12762 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12763 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12764 (preauth &&
12765 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12766 goto nla_put_failure;
12767
12768 nla_nest_end(msg, attr);
12769
12770 genlmsg_end(msg, hdr);
12771
12772 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12773 NL80211_MCGRP_MLME, gfp);
12774 return;
12775
12776 nla_put_failure:
12777 genlmsg_cancel(msg, hdr);
12778 nlmsg_free(msg);
12779 }
12780
12781 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12782 const u8 *bssid, bool preauth, gfp_t gfp)
12783 {
12784 struct wireless_dev *wdev = dev->ieee80211_ptr;
12785 struct wiphy *wiphy = wdev->wiphy;
12786 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12787
12788 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12789 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12790 }
12791 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12792
12793 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12794 struct net_device *netdev,
12795 struct cfg80211_chan_def *chandef,
12796 gfp_t gfp,
12797 enum nl80211_commands notif,
12798 u8 count)
12799 {
12800 struct sk_buff *msg;
12801 void *hdr;
12802
12803 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12804 if (!msg)
12805 return;
12806
12807 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12808 if (!hdr) {
12809 nlmsg_free(msg);
12810 return;
12811 }
12812
12813 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12814 goto nla_put_failure;
12815
12816 if (nl80211_send_chandef(msg, chandef))
12817 goto nla_put_failure;
12818
12819 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12820 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12821 goto nla_put_failure;
12822
12823 genlmsg_end(msg, hdr);
12824
12825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12826 NL80211_MCGRP_MLME, gfp);
12827 return;
12828
12829 nla_put_failure:
12830 genlmsg_cancel(msg, hdr);
12831 nlmsg_free(msg);
12832 }
12833
12834 void cfg80211_ch_switch_notify(struct net_device *dev,
12835 struct cfg80211_chan_def *chandef)
12836 {
12837 struct wireless_dev *wdev = dev->ieee80211_ptr;
12838 struct wiphy *wiphy = wdev->wiphy;
12839 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12840
12841 ASSERT_WDEV_LOCK(wdev);
12842
12843 trace_cfg80211_ch_switch_notify(dev, chandef);
12844
12845 wdev->chandef = *chandef;
12846 wdev->preset_chandef = *chandef;
12847 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12848 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12849 }
12850 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12851
12852 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12853 struct cfg80211_chan_def *chandef,
12854 u8 count)
12855 {
12856 struct wireless_dev *wdev = dev->ieee80211_ptr;
12857 struct wiphy *wiphy = wdev->wiphy;
12858 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12859
12860 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12861
12862 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12863 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12864 }
12865 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12866
12867 void
12868 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12869 const struct cfg80211_chan_def *chandef,
12870 enum nl80211_radar_event event,
12871 struct net_device *netdev, gfp_t gfp)
12872 {
12873 struct sk_buff *msg;
12874 void *hdr;
12875
12876 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12877 if (!msg)
12878 return;
12879
12880 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12881 if (!hdr) {
12882 nlmsg_free(msg);
12883 return;
12884 }
12885
12886 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12887 goto nla_put_failure;
12888
12889 /* NOP and radar events don't need a netdev parameter */
12890 if (netdev) {
12891 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12892
12893 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12894 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12895 goto nla_put_failure;
12896 }
12897
12898 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12899 goto nla_put_failure;
12900
12901 if (nl80211_send_chandef(msg, chandef))
12902 goto nla_put_failure;
12903
12904 genlmsg_end(msg, hdr);
12905
12906 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12907 NL80211_MCGRP_MLME, gfp);
12908 return;
12909
12910 nla_put_failure:
12911 genlmsg_cancel(msg, hdr);
12912 nlmsg_free(msg);
12913 }
12914
12915 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12916 u64 cookie, bool acked, gfp_t gfp)
12917 {
12918 struct wireless_dev *wdev = dev->ieee80211_ptr;
12919 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12920 struct sk_buff *msg;
12921 void *hdr;
12922
12923 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12924
12925 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12926
12927 if (!msg)
12928 return;
12929
12930 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12931 if (!hdr) {
12932 nlmsg_free(msg);
12933 return;
12934 }
12935
12936 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12937 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12938 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12939 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12940 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12941 goto nla_put_failure;
12942
12943 genlmsg_end(msg, hdr);
12944
12945 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12946 NL80211_MCGRP_MLME, gfp);
12947 return;
12948
12949 nla_put_failure:
12950 genlmsg_cancel(msg, hdr);
12951 nlmsg_free(msg);
12952 }
12953 EXPORT_SYMBOL(cfg80211_probe_status);
12954
12955 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12956 const u8 *frame, size_t len,
12957 int freq, int sig_dbm)
12958 {
12959 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12960 struct sk_buff *msg;
12961 void *hdr;
12962 struct cfg80211_beacon_registration *reg;
12963
12964 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12965
12966 spin_lock_bh(&rdev->beacon_registrations_lock);
12967 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12968 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12969 if (!msg) {
12970 spin_unlock_bh(&rdev->beacon_registrations_lock);
12971 return;
12972 }
12973
12974 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12975 if (!hdr)
12976 goto nla_put_failure;
12977
12978 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12979 (freq &&
12980 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12981 (sig_dbm &&
12982 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12983 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12984 goto nla_put_failure;
12985
12986 genlmsg_end(msg, hdr);
12987
12988 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12989 }
12990 spin_unlock_bh(&rdev->beacon_registrations_lock);
12991 return;
12992
12993 nla_put_failure:
12994 spin_unlock_bh(&rdev->beacon_registrations_lock);
12995 if (hdr)
12996 genlmsg_cancel(msg, hdr);
12997 nlmsg_free(msg);
12998 }
12999 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13000
13001 #ifdef CONFIG_PM
13002 static int cfg80211_net_detect_results(struct sk_buff *msg,
13003 struct cfg80211_wowlan_wakeup *wakeup)
13004 {
13005 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13006 struct nlattr *nl_results, *nl_match, *nl_freqs;
13007 int i, j;
13008
13009 nl_results = nla_nest_start(
13010 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13011 if (!nl_results)
13012 return -EMSGSIZE;
13013
13014 for (i = 0; i < nd->n_matches; i++) {
13015 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13016
13017 nl_match = nla_nest_start(msg, i);
13018 if (!nl_match)
13019 break;
13020
13021 /* The SSID attribute is optional in nl80211, but for
13022 * simplicity reasons it's always present in the
13023 * cfg80211 structure. If a driver can't pass the
13024 * SSID, that needs to be changed. A zero length SSID
13025 * is still a valid SSID (wildcard), so it cannot be
13026 * used for this purpose.
13027 */
13028 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13029 match->ssid.ssid)) {
13030 nla_nest_cancel(msg, nl_match);
13031 goto out;
13032 }
13033
13034 if (match->n_channels) {
13035 nl_freqs = nla_nest_start(
13036 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13037 if (!nl_freqs) {
13038 nla_nest_cancel(msg, nl_match);
13039 goto out;
13040 }
13041
13042 for (j = 0; j < match->n_channels; j++) {
13043 if (nla_put_u32(msg, j, match->channels[j])) {
13044 nla_nest_cancel(msg, nl_freqs);
13045 nla_nest_cancel(msg, nl_match);
13046 goto out;
13047 }
13048 }
13049
13050 nla_nest_end(msg, nl_freqs);
13051 }
13052
13053 nla_nest_end(msg, nl_match);
13054 }
13055
13056 out:
13057 nla_nest_end(msg, nl_results);
13058 return 0;
13059 }
13060
13061 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13062 struct cfg80211_wowlan_wakeup *wakeup,
13063 gfp_t gfp)
13064 {
13065 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13066 struct sk_buff *msg;
13067 void *hdr;
13068 int size = 200;
13069
13070 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13071
13072 if (wakeup)
13073 size += wakeup->packet_present_len;
13074
13075 msg = nlmsg_new(size, gfp);
13076 if (!msg)
13077 return;
13078
13079 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13080 if (!hdr)
13081 goto free_msg;
13082
13083 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13084 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13085 goto free_msg;
13086
13087 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13088 wdev->netdev->ifindex))
13089 goto free_msg;
13090
13091 if (wakeup) {
13092 struct nlattr *reasons;
13093
13094 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13095 if (!reasons)
13096 goto free_msg;
13097
13098 if (wakeup->disconnect &&
13099 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13100 goto free_msg;
13101 if (wakeup->magic_pkt &&
13102 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13103 goto free_msg;
13104 if (wakeup->gtk_rekey_failure &&
13105 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13106 goto free_msg;
13107 if (wakeup->eap_identity_req &&
13108 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13109 goto free_msg;
13110 if (wakeup->four_way_handshake &&
13111 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13112 goto free_msg;
13113 if (wakeup->rfkill_release &&
13114 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13115 goto free_msg;
13116
13117 if (wakeup->pattern_idx >= 0 &&
13118 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13119 wakeup->pattern_idx))
13120 goto free_msg;
13121
13122 if (wakeup->tcp_match &&
13123 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13124 goto free_msg;
13125
13126 if (wakeup->tcp_connlost &&
13127 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13128 goto free_msg;
13129
13130 if (wakeup->tcp_nomoretokens &&
13131 nla_put_flag(msg,
13132 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13133 goto free_msg;
13134
13135 if (wakeup->packet) {
13136 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13137 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13138
13139 if (!wakeup->packet_80211) {
13140 pkt_attr =
13141 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13142 len_attr =
13143 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13144 }
13145
13146 if (wakeup->packet_len &&
13147 nla_put_u32(msg, len_attr, wakeup->packet_len))
13148 goto free_msg;
13149
13150 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13151 wakeup->packet))
13152 goto free_msg;
13153 }
13154
13155 if (wakeup->net_detect &&
13156 cfg80211_net_detect_results(msg, wakeup))
13157 goto free_msg;
13158
13159 nla_nest_end(msg, reasons);
13160 }
13161
13162 genlmsg_end(msg, hdr);
13163
13164 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13165 NL80211_MCGRP_MLME, gfp);
13166 return;
13167
13168 free_msg:
13169 nlmsg_free(msg);
13170 }
13171 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13172 #endif
13173
13174 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13175 enum nl80211_tdls_operation oper,
13176 u16 reason_code, gfp_t gfp)
13177 {
13178 struct wireless_dev *wdev = dev->ieee80211_ptr;
13179 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13180 struct sk_buff *msg;
13181 void *hdr;
13182
13183 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13184 reason_code);
13185
13186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13187 if (!msg)
13188 return;
13189
13190 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13191 if (!hdr) {
13192 nlmsg_free(msg);
13193 return;
13194 }
13195
13196 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13197 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13198 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13199 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13200 (reason_code > 0 &&
13201 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13202 goto nla_put_failure;
13203
13204 genlmsg_end(msg, hdr);
13205
13206 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13207 NL80211_MCGRP_MLME, gfp);
13208 return;
13209
13210 nla_put_failure:
13211 genlmsg_cancel(msg, hdr);
13212 nlmsg_free(msg);
13213 }
13214 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13215
13216 static int nl80211_netlink_notify(struct notifier_block * nb,
13217 unsigned long state,
13218 void *_notify)
13219 {
13220 struct netlink_notify *notify = _notify;
13221 struct cfg80211_registered_device *rdev;
13222 struct wireless_dev *wdev;
13223 struct cfg80211_beacon_registration *reg, *tmp;
13224
13225 if (state != NETLINK_URELEASE)
13226 return NOTIFY_DONE;
13227
13228 rcu_read_lock();
13229
13230 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13231 bool schedule_destroy_work = false;
13232 bool schedule_scan_stop = false;
13233 struct cfg80211_sched_scan_request *sched_scan_req =
13234 rcu_dereference(rdev->sched_scan_req);
13235
13236 if (sched_scan_req && notify->portid &&
13237 sched_scan_req->owner_nlportid == notify->portid)
13238 schedule_scan_stop = true;
13239
13240 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
13241 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13242
13243 if (wdev->owner_nlportid == notify->portid)
13244 schedule_destroy_work = true;
13245 }
13246
13247 spin_lock_bh(&rdev->beacon_registrations_lock);
13248 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13249 list) {
13250 if (reg->nlportid == notify->portid) {
13251 list_del(&reg->list);
13252 kfree(reg);
13253 break;
13254 }
13255 }
13256 spin_unlock_bh(&rdev->beacon_registrations_lock);
13257
13258 if (schedule_destroy_work) {
13259 struct cfg80211_iface_destroy *destroy;
13260
13261 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13262 if (destroy) {
13263 destroy->nlportid = notify->portid;
13264 spin_lock(&rdev->destroy_list_lock);
13265 list_add(&destroy->list, &rdev->destroy_list);
13266 spin_unlock(&rdev->destroy_list_lock);
13267 schedule_work(&rdev->destroy_work);
13268 }
13269 } else if (schedule_scan_stop) {
13270 sched_scan_req->owner_nlportid = 0;
13271
13272 if (rdev->ops->sched_scan_stop &&
13273 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13274 schedule_work(&rdev->sched_scan_stop_wk);
13275 }
13276 }
13277
13278 rcu_read_unlock();
13279
13280 /*
13281 * It is possible that the user space process that is controlling the
13282 * indoor setting disappeared, so notify the regulatory core.
13283 */
13284 regulatory_netlink_notify(notify->portid);
13285 return NOTIFY_OK;
13286 }
13287
13288 static struct notifier_block nl80211_netlink_notifier = {
13289 .notifier_call = nl80211_netlink_notify,
13290 };
13291
13292 void cfg80211_ft_event(struct net_device *netdev,
13293 struct cfg80211_ft_event_params *ft_event)
13294 {
13295 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13296 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13297 struct sk_buff *msg;
13298 void *hdr;
13299
13300 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13301
13302 if (!ft_event->target_ap)
13303 return;
13304
13305 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13306 if (!msg)
13307 return;
13308
13309 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13310 if (!hdr)
13311 goto out;
13312
13313 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13314 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13315 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13316 goto out;
13317
13318 if (ft_event->ies &&
13319 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13320 goto out;
13321 if (ft_event->ric_ies &&
13322 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13323 ft_event->ric_ies))
13324 goto out;
13325
13326 genlmsg_end(msg, hdr);
13327
13328 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13329 NL80211_MCGRP_MLME, GFP_KERNEL);
13330 return;
13331 out:
13332 nlmsg_free(msg);
13333 }
13334 EXPORT_SYMBOL(cfg80211_ft_event);
13335
13336 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13337 {
13338 struct cfg80211_registered_device *rdev;
13339 struct sk_buff *msg;
13340 void *hdr;
13341 u32 nlportid;
13342
13343 rdev = wiphy_to_rdev(wdev->wiphy);
13344 if (!rdev->crit_proto_nlportid)
13345 return;
13346
13347 nlportid = rdev->crit_proto_nlportid;
13348 rdev->crit_proto_nlportid = 0;
13349
13350 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13351 if (!msg)
13352 return;
13353
13354 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13355 if (!hdr)
13356 goto nla_put_failure;
13357
13358 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13359 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13360 goto nla_put_failure;
13361
13362 genlmsg_end(msg, hdr);
13363
13364 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13365 return;
13366
13367 nla_put_failure:
13368 if (hdr)
13369 genlmsg_cancel(msg, hdr);
13370 nlmsg_free(msg);
13371
13372 }
13373 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13374
13375 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13376 {
13377 struct wiphy *wiphy = wdev->wiphy;
13378 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13379 struct sk_buff *msg;
13380 void *hdr;
13381
13382 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13383 if (!msg)
13384 return;
13385
13386 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13387 if (!hdr)
13388 goto out;
13389
13390 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13391 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13392 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13393 goto out;
13394
13395 genlmsg_end(msg, hdr);
13396
13397 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13398 NL80211_MCGRP_MLME, GFP_KERNEL);
13399 return;
13400 out:
13401 nlmsg_free(msg);
13402 }
13403
13404 /* initialisation/exit functions */
13405
13406 int nl80211_init(void)
13407 {
13408 int err;
13409
13410 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13411 nl80211_mcgrps);
13412 if (err)
13413 return err;
13414
13415 err = netlink_register_notifier(&nl80211_netlink_notifier);
13416 if (err)
13417 goto err_out;
13418
13419 return 0;
13420 err_out:
13421 genl_unregister_family(&nl80211_fam);
13422 return err;
13423 }
13424
13425 void nl80211_exit(void)
13426 {
13427 netlink_unregister_notifier(&nl80211_netlink_notifier);
13428 genl_unregister_family(&nl80211_fam);
13429 }
Linux kernel - Deliverables
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