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Merge tag 'mac80211-next-for-davem-2015-01-19' of git://git.kernel.org/pub/scm/linux...
[mirror_ubuntu-zesty-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
400 };
401
402 /* policy for the key attributes */
403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
404 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
405 [NL80211_KEY_IDX] = { .type = NLA_U8 },
406 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
407 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
408 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
409 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
410 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
411 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
412 };
413
414 /* policy for the key default flags */
415 static const struct nla_policy
416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
417 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
418 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
419 };
420
421 /* policy for WoWLAN attributes */
422 static const struct nla_policy
423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
424 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
426 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
428 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
433 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
434 };
435
436 static const struct nla_policy
437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
438 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
439 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
440 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
441 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
442 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
443 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
446 },
447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
448 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
449 },
450 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
451 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
452 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
453 };
454
455 /* policy for coalesce rule attributes */
456 static const struct nla_policy
457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
458 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
459 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
460 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
461 };
462
463 /* policy for GTK rekey offload attributes */
464 static const struct nla_policy
465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
466 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
467 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
468 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
469 };
470
471 static const struct nla_policy
472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
473 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
474 .len = IEEE80211_MAX_SSID_LEN },
475 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
476 };
477
478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
479 struct netlink_callback *cb,
480 struct cfg80211_registered_device **rdev,
481 struct wireless_dev **wdev)
482 {
483 int err;
484
485 rtnl_lock();
486
487 if (!cb->args[0]) {
488 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
489 nl80211_fam.attrbuf, nl80211_fam.maxattr,
490 nl80211_policy);
491 if (err)
492 goto out_unlock;
493
494 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
495 nl80211_fam.attrbuf);
496 if (IS_ERR(*wdev)) {
497 err = PTR_ERR(*wdev);
498 goto out_unlock;
499 }
500 *rdev = wiphy_to_rdev((*wdev)->wiphy);
501 /* 0 is the first index - add 1 to parse only once */
502 cb->args[0] = (*rdev)->wiphy_idx + 1;
503 cb->args[1] = (*wdev)->identifier;
504 } else {
505 /* subtract the 1 again here */
506 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
507 struct wireless_dev *tmp;
508
509 if (!wiphy) {
510 err = -ENODEV;
511 goto out_unlock;
512 }
513 *rdev = wiphy_to_rdev(wiphy);
514 *wdev = NULL;
515
516 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
517 if (tmp->identifier == cb->args[1]) {
518 *wdev = tmp;
519 break;
520 }
521 }
522
523 if (!*wdev) {
524 err = -ENODEV;
525 goto out_unlock;
526 }
527 }
528
529 return 0;
530 out_unlock:
531 rtnl_unlock();
532 return err;
533 }
534
535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
536 {
537 rtnl_unlock();
538 }
539
540 /* IE validation */
541 static bool is_valid_ie_attr(const struct nlattr *attr)
542 {
543 const u8 *pos;
544 int len;
545
546 if (!attr)
547 return true;
548
549 pos = nla_data(attr);
550 len = nla_len(attr);
551
552 while (len) {
553 u8 elemlen;
554
555 if (len < 2)
556 return false;
557 len -= 2;
558
559 elemlen = pos[1];
560 if (elemlen > len)
561 return false;
562
563 len -= elemlen;
564 pos += 2 + elemlen;
565 }
566
567 return true;
568 }
569
570 /* message building helper */
571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
572 int flags, u8 cmd)
573 {
574 /* since there is no private header just add the generic one */
575 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
576 }
577
578 static int nl80211_msg_put_channel(struct sk_buff *msg,
579 struct ieee80211_channel *chan,
580 bool large)
581 {
582 /* Some channels must be completely excluded from the
583 * list to protect old user-space tools from breaking
584 */
585 if (!large && chan->flags &
586 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
587 return 0;
588
589 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
590 chan->center_freq))
591 goto nla_put_failure;
592
593 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
594 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
595 goto nla_put_failure;
596 if (chan->flags & IEEE80211_CHAN_NO_IR) {
597 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
598 goto nla_put_failure;
599 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
600 goto nla_put_failure;
601 }
602 if (chan->flags & IEEE80211_CHAN_RADAR) {
603 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
604 goto nla_put_failure;
605 if (large) {
606 u32 time;
607
608 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
609
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
611 chan->dfs_state))
612 goto nla_put_failure;
613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
614 time))
615 goto nla_put_failure;
616 if (nla_put_u32(msg,
617 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
618 chan->dfs_cac_ms))
619 goto nla_put_failure;
620 }
621 }
622
623 if (large) {
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
644 goto nla_put_failure;
645 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
647 goto nla_put_failure;
648 }
649
650 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
651 DBM_TO_MBM(chan->max_power)))
652 goto nla_put_failure;
653
654 return 0;
655
656 nla_put_failure:
657 return -ENOBUFS;
658 }
659
660 /* netlink command implementations */
661
662 struct key_parse {
663 struct key_params p;
664 int idx;
665 int type;
666 bool def, defmgmt;
667 bool def_uni, def_multi;
668 };
669
670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
671 {
672 struct nlattr *tb[NL80211_KEY_MAX + 1];
673 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
674 nl80211_key_policy);
675 if (err)
676 return err;
677
678 k->def = !!tb[NL80211_KEY_DEFAULT];
679 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
680
681 if (k->def) {
682 k->def_uni = true;
683 k->def_multi = true;
684 }
685 if (k->defmgmt)
686 k->def_multi = true;
687
688 if (tb[NL80211_KEY_IDX])
689 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
690
691 if (tb[NL80211_KEY_DATA]) {
692 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
693 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
694 }
695
696 if (tb[NL80211_KEY_SEQ]) {
697 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
698 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
699 }
700
701 if (tb[NL80211_KEY_CIPHER])
702 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
703
704 if (tb[NL80211_KEY_TYPE]) {
705 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
706 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
707 return -EINVAL;
708 }
709
710 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
711 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
712 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
713 tb[NL80211_KEY_DEFAULT_TYPES],
714 nl80211_key_default_policy);
715 if (err)
716 return err;
717
718 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
719 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
720 }
721
722 return 0;
723 }
724
725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
726 {
727 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
728 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
729 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
730 }
731
732 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
733 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
734 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
735 }
736
737 if (info->attrs[NL80211_ATTR_KEY_IDX])
738 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
739
740 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
741 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
742
743 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
744 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
745
746 if (k->def) {
747 k->def_uni = true;
748 k->def_multi = true;
749 }
750 if (k->defmgmt)
751 k->def_multi = true;
752
753 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
754 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
755 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
756 return -EINVAL;
757 }
758
759 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
760 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
761 int err = nla_parse_nested(
762 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
763 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
764 nl80211_key_default_policy);
765 if (err)
766 return err;
767
768 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
769 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
770 }
771
772 return 0;
773 }
774
775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
776 {
777 int err;
778
779 memset(k, 0, sizeof(*k));
780 k->idx = -1;
781 k->type = -1;
782
783 if (info->attrs[NL80211_ATTR_KEY])
784 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
785 else
786 err = nl80211_parse_key_old(info, k);
787
788 if (err)
789 return err;
790
791 if (k->def && k->defmgmt)
792 return -EINVAL;
793
794 if (k->defmgmt) {
795 if (k->def_uni || !k->def_multi)
796 return -EINVAL;
797 }
798
799 if (k->idx != -1) {
800 if (k->defmgmt) {
801 if (k->idx < 4 || k->idx > 5)
802 return -EINVAL;
803 } else if (k->def) {
804 if (k->idx < 0 || k->idx > 3)
805 return -EINVAL;
806 } else {
807 if (k->idx < 0 || k->idx > 5)
808 return -EINVAL;
809 }
810 }
811
812 return 0;
813 }
814
815 static struct cfg80211_cached_keys *
816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
817 struct nlattr *keys, bool *no_ht)
818 {
819 struct key_parse parse;
820 struct nlattr *key;
821 struct cfg80211_cached_keys *result;
822 int rem, err, def = 0;
823
824 result = kzalloc(sizeof(*result), GFP_KERNEL);
825 if (!result)
826 return ERR_PTR(-ENOMEM);
827
828 result->def = -1;
829 result->defmgmt = -1;
830
831 nla_for_each_nested(key, keys, rem) {
832 memset(&parse, 0, sizeof(parse));
833 parse.idx = -1;
834
835 err = nl80211_parse_key_new(key, &parse);
836 if (err)
837 goto error;
838 err = -EINVAL;
839 if (!parse.p.key)
840 goto error;
841 if (parse.idx < 0 || parse.idx > 4)
842 goto error;
843 if (parse.def) {
844 if (def)
845 goto error;
846 def = 1;
847 result->def = parse.idx;
848 if (!parse.def_uni || !parse.def_multi)
849 goto error;
850 } else if (parse.defmgmt)
851 goto error;
852 err = cfg80211_validate_key_settings(rdev, &parse.p,
853 parse.idx, false, NULL);
854 if (err)
855 goto error;
856 result->params[parse.idx].cipher = parse.p.cipher;
857 result->params[parse.idx].key_len = parse.p.key_len;
858 result->params[parse.idx].key = result->data[parse.idx];
859 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
860
861 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
862 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
863 if (no_ht)
864 *no_ht = true;
865 }
866 }
867
868 return result;
869 error:
870 kfree(result);
871 return ERR_PTR(err);
872 }
873
874 static int nl80211_key_allowed(struct wireless_dev *wdev)
875 {
876 ASSERT_WDEV_LOCK(wdev);
877
878 switch (wdev->iftype) {
879 case NL80211_IFTYPE_AP:
880 case NL80211_IFTYPE_AP_VLAN:
881 case NL80211_IFTYPE_P2P_GO:
882 case NL80211_IFTYPE_MESH_POINT:
883 break;
884 case NL80211_IFTYPE_ADHOC:
885 case NL80211_IFTYPE_STATION:
886 case NL80211_IFTYPE_P2P_CLIENT:
887 if (!wdev->current_bss)
888 return -ENOLINK;
889 break;
890 case NL80211_IFTYPE_UNSPECIFIED:
891 case NL80211_IFTYPE_OCB:
892 case NL80211_IFTYPE_MONITOR:
893 case NL80211_IFTYPE_P2P_DEVICE:
894 case NL80211_IFTYPE_WDS:
895 case NUM_NL80211_IFTYPES:
896 return -EINVAL;
897 }
898
899 return 0;
900 }
901
902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
903 struct nlattr *tb)
904 {
905 struct ieee80211_channel *chan;
906
907 if (tb == NULL)
908 return NULL;
909 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
910 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
911 return NULL;
912 return chan;
913 }
914
915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
916 {
917 struct nlattr *nl_modes = nla_nest_start(msg, attr);
918 int i;
919
920 if (!nl_modes)
921 goto nla_put_failure;
922
923 i = 0;
924 while (ifmodes) {
925 if ((ifmodes & 1) && nla_put_flag(msg, i))
926 goto nla_put_failure;
927 ifmodes >>= 1;
928 i++;
929 }
930
931 nla_nest_end(msg, nl_modes);
932 return 0;
933
934 nla_put_failure:
935 return -ENOBUFS;
936 }
937
938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
939 struct sk_buff *msg,
940 bool large)
941 {
942 struct nlattr *nl_combis;
943 int i, j;
944
945 nl_combis = nla_nest_start(msg,
946 NL80211_ATTR_INTERFACE_COMBINATIONS);
947 if (!nl_combis)
948 goto nla_put_failure;
949
950 for (i = 0; i < wiphy->n_iface_combinations; i++) {
951 const struct ieee80211_iface_combination *c;
952 struct nlattr *nl_combi, *nl_limits;
953
954 c = &wiphy->iface_combinations[i];
955
956 nl_combi = nla_nest_start(msg, i + 1);
957 if (!nl_combi)
958 goto nla_put_failure;
959
960 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
961 if (!nl_limits)
962 goto nla_put_failure;
963
964 for (j = 0; j < c->n_limits; j++) {
965 struct nlattr *nl_limit;
966
967 nl_limit = nla_nest_start(msg, j + 1);
968 if (!nl_limit)
969 goto nla_put_failure;
970 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
971 c->limits[j].max))
972 goto nla_put_failure;
973 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
974 c->limits[j].types))
975 goto nla_put_failure;
976 nla_nest_end(msg, nl_limit);
977 }
978
979 nla_nest_end(msg, nl_limits);
980
981 if (c->beacon_int_infra_match &&
982 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
983 goto nla_put_failure;
984 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
985 c->num_different_channels) ||
986 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
987 c->max_interfaces))
988 goto nla_put_failure;
989 if (large &&
990 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
991 c->radar_detect_widths) ||
992 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
993 c->radar_detect_regions)))
994 goto nla_put_failure;
995
996 nla_nest_end(msg, nl_combi);
997 }
998
999 nla_nest_end(msg, nl_combis);
1000
1001 return 0;
1002 nla_put_failure:
1003 return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008 struct sk_buff *msg)
1009 {
1010 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011 struct nlattr *nl_tcp;
1012
1013 if (!tcp)
1014 return 0;
1015
1016 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017 if (!nl_tcp)
1018 return -ENOBUFS;
1019
1020 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021 tcp->data_payload_max))
1022 return -ENOBUFS;
1023
1024 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025 tcp->data_payload_max))
1026 return -ENOBUFS;
1027
1028 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029 return -ENOBUFS;
1030
1031 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032 sizeof(*tcp->tok), tcp->tok))
1033 return -ENOBUFS;
1034
1035 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036 tcp->data_interval_max))
1037 return -ENOBUFS;
1038
1039 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040 tcp->wake_payload_max))
1041 return -ENOBUFS;
1042
1043 nla_nest_end(msg, nl_tcp);
1044 return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048 struct cfg80211_registered_device *rdev,
1049 bool large)
1050 {
1051 struct nlattr *nl_wowlan;
1052
1053 if (!rdev->wiphy.wowlan)
1054 return 0;
1055
1056 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057 if (!nl_wowlan)
1058 return -ENOBUFS;
1059
1060 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076 return -ENOBUFS;
1077
1078 if (rdev->wiphy.wowlan->n_patterns) {
1079 struct nl80211_pattern_support pat = {
1080 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084 };
1085
1086 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087 sizeof(pat), &pat))
1088 return -ENOBUFS;
1089 }
1090
1091 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1092 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1093 rdev->wiphy.wowlan->max_nd_match_sets))
1094 return -ENOBUFS;
1095
1096 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1097 return -ENOBUFS;
1098
1099 /* TODO: send wowlan net detect */
1100
1101 nla_nest_end(msg, nl_wowlan);
1102
1103 return 0;
1104 }
1105 #endif
1106
1107 static int nl80211_send_coalesce(struct sk_buff *msg,
1108 struct cfg80211_registered_device *rdev)
1109 {
1110 struct nl80211_coalesce_rule_support rule;
1111
1112 if (!rdev->wiphy.coalesce)
1113 return 0;
1114
1115 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1116 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1117 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1118 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1119 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1120 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1121
1122 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1123 return -ENOBUFS;
1124
1125 return 0;
1126 }
1127
1128 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1129 struct ieee80211_supported_band *sband)
1130 {
1131 struct nlattr *nl_rates, *nl_rate;
1132 struct ieee80211_rate *rate;
1133 int i;
1134
1135 /* add HT info */
1136 if (sband->ht_cap.ht_supported &&
1137 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1138 sizeof(sband->ht_cap.mcs),
1139 &sband->ht_cap.mcs) ||
1140 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1141 sband->ht_cap.cap) ||
1142 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1143 sband->ht_cap.ampdu_factor) ||
1144 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1145 sband->ht_cap.ampdu_density)))
1146 return -ENOBUFS;
1147
1148 /* add VHT info */
1149 if (sband->vht_cap.vht_supported &&
1150 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1151 sizeof(sband->vht_cap.vht_mcs),
1152 &sband->vht_cap.vht_mcs) ||
1153 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1154 sband->vht_cap.cap)))
1155 return -ENOBUFS;
1156
1157 /* add bitrates */
1158 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1159 if (!nl_rates)
1160 return -ENOBUFS;
1161
1162 for (i = 0; i < sband->n_bitrates; i++) {
1163 nl_rate = nla_nest_start(msg, i);
1164 if (!nl_rate)
1165 return -ENOBUFS;
1166
1167 rate = &sband->bitrates[i];
1168 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1169 rate->bitrate))
1170 return -ENOBUFS;
1171 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1172 nla_put_flag(msg,
1173 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1174 return -ENOBUFS;
1175
1176 nla_nest_end(msg, nl_rate);
1177 }
1178
1179 nla_nest_end(msg, nl_rates);
1180
1181 return 0;
1182 }
1183
1184 static int
1185 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1186 const struct ieee80211_txrx_stypes *mgmt_stypes)
1187 {
1188 u16 stypes;
1189 struct nlattr *nl_ftypes, *nl_ifs;
1190 enum nl80211_iftype ift;
1191 int i;
1192
1193 if (!mgmt_stypes)
1194 return 0;
1195
1196 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1197 if (!nl_ifs)
1198 return -ENOBUFS;
1199
1200 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1201 nl_ftypes = nla_nest_start(msg, ift);
1202 if (!nl_ftypes)
1203 return -ENOBUFS;
1204 i = 0;
1205 stypes = mgmt_stypes[ift].tx;
1206 while (stypes) {
1207 if ((stypes & 1) &&
1208 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1209 (i << 4) | IEEE80211_FTYPE_MGMT))
1210 return -ENOBUFS;
1211 stypes >>= 1;
1212 i++;
1213 }
1214 nla_nest_end(msg, nl_ftypes);
1215 }
1216
1217 nla_nest_end(msg, nl_ifs);
1218
1219 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1220 if (!nl_ifs)
1221 return -ENOBUFS;
1222
1223 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1224 nl_ftypes = nla_nest_start(msg, ift);
1225 if (!nl_ftypes)
1226 return -ENOBUFS;
1227 i = 0;
1228 stypes = mgmt_stypes[ift].rx;
1229 while (stypes) {
1230 if ((stypes & 1) &&
1231 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1232 (i << 4) | IEEE80211_FTYPE_MGMT))
1233 return -ENOBUFS;
1234 stypes >>= 1;
1235 i++;
1236 }
1237 nla_nest_end(msg, nl_ftypes);
1238 }
1239 nla_nest_end(msg, nl_ifs);
1240
1241 return 0;
1242 }
1243
1244 struct nl80211_dump_wiphy_state {
1245 s64 filter_wiphy;
1246 long start;
1247 long split_start, band_start, chan_start;
1248 bool split;
1249 };
1250
1251 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1252 enum nl80211_commands cmd,
1253 struct sk_buff *msg, u32 portid, u32 seq,
1254 int flags, struct nl80211_dump_wiphy_state *state)
1255 {
1256 void *hdr;
1257 struct nlattr *nl_bands, *nl_band;
1258 struct nlattr *nl_freqs, *nl_freq;
1259 struct nlattr *nl_cmds;
1260 enum ieee80211_band band;
1261 struct ieee80211_channel *chan;
1262 int i;
1263 const struct ieee80211_txrx_stypes *mgmt_stypes =
1264 rdev->wiphy.mgmt_stypes;
1265 u32 features;
1266
1267 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1268 if (!hdr)
1269 return -ENOBUFS;
1270
1271 if (WARN_ON(!state))
1272 return -EINVAL;
1273
1274 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1275 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1276 wiphy_name(&rdev->wiphy)) ||
1277 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1278 cfg80211_rdev_list_generation))
1279 goto nla_put_failure;
1280
1281 if (cmd != NL80211_CMD_NEW_WIPHY)
1282 goto finish;
1283
1284 switch (state->split_start) {
1285 case 0:
1286 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1287 rdev->wiphy.retry_short) ||
1288 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1289 rdev->wiphy.retry_long) ||
1290 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1291 rdev->wiphy.frag_threshold) ||
1292 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1293 rdev->wiphy.rts_threshold) ||
1294 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1295 rdev->wiphy.coverage_class) ||
1296 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1297 rdev->wiphy.max_scan_ssids) ||
1298 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1299 rdev->wiphy.max_sched_scan_ssids) ||
1300 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1301 rdev->wiphy.max_scan_ie_len) ||
1302 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1303 rdev->wiphy.max_sched_scan_ie_len) ||
1304 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1305 rdev->wiphy.max_match_sets))
1306 goto nla_put_failure;
1307
1308 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1309 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1310 goto nla_put_failure;
1311 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1312 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1313 goto nla_put_failure;
1314 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1315 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1316 goto nla_put_failure;
1317 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1318 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1319 goto nla_put_failure;
1320 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1321 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1322 goto nla_put_failure;
1323 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1324 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1325 goto nla_put_failure;
1326 state->split_start++;
1327 if (state->split)
1328 break;
1329 case 1:
1330 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1331 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1332 rdev->wiphy.cipher_suites))
1333 goto nla_put_failure;
1334
1335 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1336 rdev->wiphy.max_num_pmkids))
1337 goto nla_put_failure;
1338
1339 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1340 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1341 goto nla_put_failure;
1342
1343 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1344 rdev->wiphy.available_antennas_tx) ||
1345 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1346 rdev->wiphy.available_antennas_rx))
1347 goto nla_put_failure;
1348
1349 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1350 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1351 rdev->wiphy.probe_resp_offload))
1352 goto nla_put_failure;
1353
1354 if ((rdev->wiphy.available_antennas_tx ||
1355 rdev->wiphy.available_antennas_rx) &&
1356 rdev->ops->get_antenna) {
1357 u32 tx_ant = 0, rx_ant = 0;
1358 int res;
1359 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1360 if (!res) {
1361 if (nla_put_u32(msg,
1362 NL80211_ATTR_WIPHY_ANTENNA_TX,
1363 tx_ant) ||
1364 nla_put_u32(msg,
1365 NL80211_ATTR_WIPHY_ANTENNA_RX,
1366 rx_ant))
1367 goto nla_put_failure;
1368 }
1369 }
1370
1371 state->split_start++;
1372 if (state->split)
1373 break;
1374 case 2:
1375 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1376 rdev->wiphy.interface_modes))
1377 goto nla_put_failure;
1378 state->split_start++;
1379 if (state->split)
1380 break;
1381 case 3:
1382 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1383 if (!nl_bands)
1384 goto nla_put_failure;
1385
1386 for (band = state->band_start;
1387 band < IEEE80211_NUM_BANDS; band++) {
1388 struct ieee80211_supported_band *sband;
1389
1390 sband = rdev->wiphy.bands[band];
1391
1392 if (!sband)
1393 continue;
1394
1395 nl_band = nla_nest_start(msg, band);
1396 if (!nl_band)
1397 goto nla_put_failure;
1398
1399 switch (state->chan_start) {
1400 case 0:
1401 if (nl80211_send_band_rateinfo(msg, sband))
1402 goto nla_put_failure;
1403 state->chan_start++;
1404 if (state->split)
1405 break;
1406 default:
1407 /* add frequencies */
1408 nl_freqs = nla_nest_start(
1409 msg, NL80211_BAND_ATTR_FREQS);
1410 if (!nl_freqs)
1411 goto nla_put_failure;
1412
1413 for (i = state->chan_start - 1;
1414 i < sband->n_channels;
1415 i++) {
1416 nl_freq = nla_nest_start(msg, i);
1417 if (!nl_freq)
1418 goto nla_put_failure;
1419
1420 chan = &sband->channels[i];
1421
1422 if (nl80211_msg_put_channel(
1423 msg, chan,
1424 state->split))
1425 goto nla_put_failure;
1426
1427 nla_nest_end(msg, nl_freq);
1428 if (state->split)
1429 break;
1430 }
1431 if (i < sband->n_channels)
1432 state->chan_start = i + 2;
1433 else
1434 state->chan_start = 0;
1435 nla_nest_end(msg, nl_freqs);
1436 }
1437
1438 nla_nest_end(msg, nl_band);
1439
1440 if (state->split) {
1441 /* start again here */
1442 if (state->chan_start)
1443 band--;
1444 break;
1445 }
1446 }
1447 nla_nest_end(msg, nl_bands);
1448
1449 if (band < IEEE80211_NUM_BANDS)
1450 state->band_start = band + 1;
1451 else
1452 state->band_start = 0;
1453
1454 /* if bands & channels are done, continue outside */
1455 if (state->band_start == 0 && state->chan_start == 0)
1456 state->split_start++;
1457 if (state->split)
1458 break;
1459 case 4:
1460 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1461 if (!nl_cmds)
1462 goto nla_put_failure;
1463
1464 i = 0;
1465 #define CMD(op, n) \
1466 do { \
1467 if (rdev->ops->op) { \
1468 i++; \
1469 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1470 goto nla_put_failure; \
1471 } \
1472 } while (0)
1473
1474 CMD(add_virtual_intf, NEW_INTERFACE);
1475 CMD(change_virtual_intf, SET_INTERFACE);
1476 CMD(add_key, NEW_KEY);
1477 CMD(start_ap, START_AP);
1478 CMD(add_station, NEW_STATION);
1479 CMD(add_mpath, NEW_MPATH);
1480 CMD(update_mesh_config, SET_MESH_CONFIG);
1481 CMD(change_bss, SET_BSS);
1482 CMD(auth, AUTHENTICATE);
1483 CMD(assoc, ASSOCIATE);
1484 CMD(deauth, DEAUTHENTICATE);
1485 CMD(disassoc, DISASSOCIATE);
1486 CMD(join_ibss, JOIN_IBSS);
1487 CMD(join_mesh, JOIN_MESH);
1488 CMD(set_pmksa, SET_PMKSA);
1489 CMD(del_pmksa, DEL_PMKSA);
1490 CMD(flush_pmksa, FLUSH_PMKSA);
1491 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1492 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1493 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1494 CMD(mgmt_tx, FRAME);
1495 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1496 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1497 i++;
1498 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1499 goto nla_put_failure;
1500 }
1501 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1502 rdev->ops->join_mesh) {
1503 i++;
1504 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1505 goto nla_put_failure;
1506 }
1507 CMD(set_wds_peer, SET_WDS_PEER);
1508 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1509 CMD(tdls_mgmt, TDLS_MGMT);
1510 CMD(tdls_oper, TDLS_OPER);
1511 }
1512 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1513 CMD(sched_scan_start, START_SCHED_SCAN);
1514 CMD(probe_client, PROBE_CLIENT);
1515 CMD(set_noack_map, SET_NOACK_MAP);
1516 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1517 i++;
1518 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1519 goto nla_put_failure;
1520 }
1521 CMD(start_p2p_device, START_P2P_DEVICE);
1522 CMD(set_mcast_rate, SET_MCAST_RATE);
1523 #ifdef CONFIG_NL80211_TESTMODE
1524 CMD(testmode_cmd, TESTMODE);
1525 #endif
1526 if (state->split) {
1527 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1528 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1529 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1530 CMD(channel_switch, CHANNEL_SWITCH);
1531 CMD(set_qos_map, SET_QOS_MAP);
1532 if (rdev->wiphy.features &
1533 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1534 CMD(add_tx_ts, ADD_TX_TS);
1535 }
1536 /* add into the if now */
1537 #undef CMD
1538
1539 if (rdev->ops->connect || rdev->ops->auth) {
1540 i++;
1541 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1542 goto nla_put_failure;
1543 }
1544
1545 if (rdev->ops->disconnect || rdev->ops->deauth) {
1546 i++;
1547 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1548 goto nla_put_failure;
1549 }
1550
1551 nla_nest_end(msg, nl_cmds);
1552 state->split_start++;
1553 if (state->split)
1554 break;
1555 case 5:
1556 if (rdev->ops->remain_on_channel &&
1557 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1558 nla_put_u32(msg,
1559 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1560 rdev->wiphy.max_remain_on_channel_duration))
1561 goto nla_put_failure;
1562
1563 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1564 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1565 goto nla_put_failure;
1566
1567 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1568 goto nla_put_failure;
1569 state->split_start++;
1570 if (state->split)
1571 break;
1572 case 6:
1573 #ifdef CONFIG_PM
1574 if (nl80211_send_wowlan(msg, rdev, state->split))
1575 goto nla_put_failure;
1576 state->split_start++;
1577 if (state->split)
1578 break;
1579 #else
1580 state->split_start++;
1581 #endif
1582 case 7:
1583 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1584 rdev->wiphy.software_iftypes))
1585 goto nla_put_failure;
1586
1587 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1588 state->split))
1589 goto nla_put_failure;
1590
1591 state->split_start++;
1592 if (state->split)
1593 break;
1594 case 8:
1595 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1596 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1597 rdev->wiphy.ap_sme_capa))
1598 goto nla_put_failure;
1599
1600 features = rdev->wiphy.features;
1601 /*
1602 * We can only add the per-channel limit information if the
1603 * dump is split, otherwise it makes it too big. Therefore
1604 * only advertise it in that case.
1605 */
1606 if (state->split)
1607 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1608 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1609 goto nla_put_failure;
1610
1611 if (rdev->wiphy.ht_capa_mod_mask &&
1612 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1613 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1614 rdev->wiphy.ht_capa_mod_mask))
1615 goto nla_put_failure;
1616
1617 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1618 rdev->wiphy.max_acl_mac_addrs &&
1619 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1620 rdev->wiphy.max_acl_mac_addrs))
1621 goto nla_put_failure;
1622
1623 /*
1624 * Any information below this point is only available to
1625 * applications that can deal with it being split. This
1626 * helps ensure that newly added capabilities don't break
1627 * older tools by overrunning their buffers.
1628 *
1629 * We still increment split_start so that in the split
1630 * case we'll continue with more data in the next round,
1631 * but break unconditionally so unsplit data stops here.
1632 */
1633 state->split_start++;
1634 break;
1635 case 9:
1636 if (rdev->wiphy.extended_capabilities &&
1637 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1638 rdev->wiphy.extended_capabilities_len,
1639 rdev->wiphy.extended_capabilities) ||
1640 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1641 rdev->wiphy.extended_capabilities_len,
1642 rdev->wiphy.extended_capabilities_mask)))
1643 goto nla_put_failure;
1644
1645 if (rdev->wiphy.vht_capa_mod_mask &&
1646 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1647 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1648 rdev->wiphy.vht_capa_mod_mask))
1649 goto nla_put_failure;
1650
1651 state->split_start++;
1652 break;
1653 case 10:
1654 if (nl80211_send_coalesce(msg, rdev))
1655 goto nla_put_failure;
1656
1657 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1658 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1659 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1660 goto nla_put_failure;
1661
1662 if (rdev->wiphy.max_ap_assoc_sta &&
1663 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1664 rdev->wiphy.max_ap_assoc_sta))
1665 goto nla_put_failure;
1666
1667 state->split_start++;
1668 break;
1669 case 11:
1670 if (rdev->wiphy.n_vendor_commands) {
1671 const struct nl80211_vendor_cmd_info *info;
1672 struct nlattr *nested;
1673
1674 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1675 if (!nested)
1676 goto nla_put_failure;
1677
1678 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1679 info = &rdev->wiphy.vendor_commands[i].info;
1680 if (nla_put(msg, i + 1, sizeof(*info), info))
1681 goto nla_put_failure;
1682 }
1683 nla_nest_end(msg, nested);
1684 }
1685
1686 if (rdev->wiphy.n_vendor_events) {
1687 const struct nl80211_vendor_cmd_info *info;
1688 struct nlattr *nested;
1689
1690 nested = nla_nest_start(msg,
1691 NL80211_ATTR_VENDOR_EVENTS);
1692 if (!nested)
1693 goto nla_put_failure;
1694
1695 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1696 info = &rdev->wiphy.vendor_events[i];
1697 if (nla_put(msg, i + 1, sizeof(*info), info))
1698 goto nla_put_failure;
1699 }
1700 nla_nest_end(msg, nested);
1701 }
1702 state->split_start++;
1703 break;
1704 case 12:
1705 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1706 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1707 rdev->wiphy.max_num_csa_counters))
1708 goto nla_put_failure;
1709
1710 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1711 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1712 goto nla_put_failure;
1713
1714 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1715 sizeof(rdev->wiphy.ext_features),
1716 rdev->wiphy.ext_features))
1717 goto nla_put_failure;
1718
1719 /* done */
1720 state->split_start = 0;
1721 break;
1722 }
1723 finish:
1724 genlmsg_end(msg, hdr);
1725 return 0;
1726
1727 nla_put_failure:
1728 genlmsg_cancel(msg, hdr);
1729 return -EMSGSIZE;
1730 }
1731
1732 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1733 struct netlink_callback *cb,
1734 struct nl80211_dump_wiphy_state *state)
1735 {
1736 struct nlattr **tb = nl80211_fam.attrbuf;
1737 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1738 tb, nl80211_fam.maxattr, nl80211_policy);
1739 /* ignore parse errors for backward compatibility */
1740 if (ret)
1741 return 0;
1742
1743 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1744 if (tb[NL80211_ATTR_WIPHY])
1745 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1746 if (tb[NL80211_ATTR_WDEV])
1747 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1748 if (tb[NL80211_ATTR_IFINDEX]) {
1749 struct net_device *netdev;
1750 struct cfg80211_registered_device *rdev;
1751 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1752
1753 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1754 if (!netdev)
1755 return -ENODEV;
1756 if (netdev->ieee80211_ptr) {
1757 rdev = wiphy_to_rdev(
1758 netdev->ieee80211_ptr->wiphy);
1759 state->filter_wiphy = rdev->wiphy_idx;
1760 }
1761 }
1762
1763 return 0;
1764 }
1765
1766 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1767 {
1768 int idx = 0, ret;
1769 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1770 struct cfg80211_registered_device *rdev;
1771
1772 rtnl_lock();
1773 if (!state) {
1774 state = kzalloc(sizeof(*state), GFP_KERNEL);
1775 if (!state) {
1776 rtnl_unlock();
1777 return -ENOMEM;
1778 }
1779 state->filter_wiphy = -1;
1780 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1781 if (ret) {
1782 kfree(state);
1783 rtnl_unlock();
1784 return ret;
1785 }
1786 cb->args[0] = (long)state;
1787 }
1788
1789 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1790 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1791 continue;
1792 if (++idx <= state->start)
1793 continue;
1794 if (state->filter_wiphy != -1 &&
1795 state->filter_wiphy != rdev->wiphy_idx)
1796 continue;
1797 /* attempt to fit multiple wiphy data chunks into the skb */
1798 do {
1799 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1800 skb,
1801 NETLINK_CB(cb->skb).portid,
1802 cb->nlh->nlmsg_seq,
1803 NLM_F_MULTI, state);
1804 if (ret < 0) {
1805 /*
1806 * If sending the wiphy data didn't fit (ENOBUFS
1807 * or EMSGSIZE returned), this SKB is still
1808 * empty (so it's not too big because another
1809 * wiphy dataset is already in the skb) and
1810 * we've not tried to adjust the dump allocation
1811 * yet ... then adjust the alloc size to be
1812 * bigger, and return 1 but with the empty skb.
1813 * This results in an empty message being RX'ed
1814 * in userspace, but that is ignored.
1815 *
1816 * We can then retry with the larger buffer.
1817 */
1818 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1819 !skb->len && !state->split &&
1820 cb->min_dump_alloc < 4096) {
1821 cb->min_dump_alloc = 4096;
1822 state->split_start = 0;
1823 rtnl_unlock();
1824 return 1;
1825 }
1826 idx--;
1827 break;
1828 }
1829 } while (state->split_start > 0);
1830 break;
1831 }
1832 rtnl_unlock();
1833
1834 state->start = idx;
1835
1836 return skb->len;
1837 }
1838
1839 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1840 {
1841 kfree((void *)cb->args[0]);
1842 return 0;
1843 }
1844
1845 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1846 {
1847 struct sk_buff *msg;
1848 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1849 struct nl80211_dump_wiphy_state state = {};
1850
1851 msg = nlmsg_new(4096, GFP_KERNEL);
1852 if (!msg)
1853 return -ENOMEM;
1854
1855 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1856 info->snd_portid, info->snd_seq, 0,
1857 &state) < 0) {
1858 nlmsg_free(msg);
1859 return -ENOBUFS;
1860 }
1861
1862 return genlmsg_reply(msg, info);
1863 }
1864
1865 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1866 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1867 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1868 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1869 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1870 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1871 };
1872
1873 static int parse_txq_params(struct nlattr *tb[],
1874 struct ieee80211_txq_params *txq_params)
1875 {
1876 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1877 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1878 !tb[NL80211_TXQ_ATTR_AIFS])
1879 return -EINVAL;
1880
1881 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1882 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1883 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1884 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1885 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1886
1887 if (txq_params->ac >= NL80211_NUM_ACS)
1888 return -EINVAL;
1889
1890 return 0;
1891 }
1892
1893 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1894 {
1895 /*
1896 * You can only set the channel explicitly for WDS interfaces,
1897 * all others have their channel managed via their respective
1898 * "establish a connection" command (connect, join, ...)
1899 *
1900 * For AP/GO and mesh mode, the channel can be set with the
1901 * channel userspace API, but is only stored and passed to the
1902 * low-level driver when the AP starts or the mesh is joined.
1903 * This is for backward compatibility, userspace can also give
1904 * the channel in the start-ap or join-mesh commands instead.
1905 *
1906 * Monitors are special as they are normally slaved to
1907 * whatever else is going on, so they have their own special
1908 * operation to set the monitor channel if possible.
1909 */
1910 return !wdev ||
1911 wdev->iftype == NL80211_IFTYPE_AP ||
1912 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1913 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1914 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1915 }
1916
1917 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1918 struct genl_info *info,
1919 struct cfg80211_chan_def *chandef)
1920 {
1921 u32 control_freq;
1922
1923 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1924 return -EINVAL;
1925
1926 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1927
1928 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1929 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1930 chandef->center_freq1 = control_freq;
1931 chandef->center_freq2 = 0;
1932
1933 /* Primary channel not allowed */
1934 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1935 return -EINVAL;
1936
1937 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1938 enum nl80211_channel_type chantype;
1939
1940 chantype = nla_get_u32(
1941 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1942
1943 switch (chantype) {
1944 case NL80211_CHAN_NO_HT:
1945 case NL80211_CHAN_HT20:
1946 case NL80211_CHAN_HT40PLUS:
1947 case NL80211_CHAN_HT40MINUS:
1948 cfg80211_chandef_create(chandef, chandef->chan,
1949 chantype);
1950 break;
1951 default:
1952 return -EINVAL;
1953 }
1954 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1955 chandef->width =
1956 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1957 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1958 chandef->center_freq1 =
1959 nla_get_u32(
1960 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1961 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1962 chandef->center_freq2 =
1963 nla_get_u32(
1964 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1965 }
1966
1967 if (!cfg80211_chandef_valid(chandef))
1968 return -EINVAL;
1969
1970 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1971 IEEE80211_CHAN_DISABLED))
1972 return -EINVAL;
1973
1974 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1975 chandef->width == NL80211_CHAN_WIDTH_10) &&
1976 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1977 return -EINVAL;
1978
1979 return 0;
1980 }
1981
1982 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1983 struct net_device *dev,
1984 struct genl_info *info)
1985 {
1986 struct cfg80211_chan_def chandef;
1987 int result;
1988 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1989 struct wireless_dev *wdev = NULL;
1990
1991 if (dev)
1992 wdev = dev->ieee80211_ptr;
1993 if (!nl80211_can_set_dev_channel(wdev))
1994 return -EOPNOTSUPP;
1995 if (wdev)
1996 iftype = wdev->iftype;
1997
1998 result = nl80211_parse_chandef(rdev, info, &chandef);
1999 if (result)
2000 return result;
2001
2002 switch (iftype) {
2003 case NL80211_IFTYPE_AP:
2004 case NL80211_IFTYPE_P2P_GO:
2005 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2006 result = -EINVAL;
2007 break;
2008 }
2009 if (wdev->beacon_interval) {
2010 if (!dev || !rdev->ops->set_ap_chanwidth ||
2011 !(rdev->wiphy.features &
2012 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2013 result = -EBUSY;
2014 break;
2015 }
2016
2017 /* Only allow dynamic channel width changes */
2018 if (chandef.chan != wdev->preset_chandef.chan) {
2019 result = -EBUSY;
2020 break;
2021 }
2022 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2023 if (result)
2024 break;
2025 }
2026 wdev->preset_chandef = chandef;
2027 result = 0;
2028 break;
2029 case NL80211_IFTYPE_MESH_POINT:
2030 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2031 break;
2032 case NL80211_IFTYPE_MONITOR:
2033 result = cfg80211_set_monitor_channel(rdev, &chandef);
2034 break;
2035 default:
2036 result = -EINVAL;
2037 }
2038
2039 return result;
2040 }
2041
2042 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2043 {
2044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2045 struct net_device *netdev = info->user_ptr[1];
2046
2047 return __nl80211_set_channel(rdev, netdev, info);
2048 }
2049
2050 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2051 {
2052 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2053 struct net_device *dev = info->user_ptr[1];
2054 struct wireless_dev *wdev = dev->ieee80211_ptr;
2055 const u8 *bssid;
2056
2057 if (!info->attrs[NL80211_ATTR_MAC])
2058 return -EINVAL;
2059
2060 if (netif_running(dev))
2061 return -EBUSY;
2062
2063 if (!rdev->ops->set_wds_peer)
2064 return -EOPNOTSUPP;
2065
2066 if (wdev->iftype != NL80211_IFTYPE_WDS)
2067 return -EOPNOTSUPP;
2068
2069 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2070 return rdev_set_wds_peer(rdev, dev, bssid);
2071 }
2072
2073
2074 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2075 {
2076 struct cfg80211_registered_device *rdev;
2077 struct net_device *netdev = NULL;
2078 struct wireless_dev *wdev;
2079 int result = 0, rem_txq_params = 0;
2080 struct nlattr *nl_txq_params;
2081 u32 changed;
2082 u8 retry_short = 0, retry_long = 0;
2083 u32 frag_threshold = 0, rts_threshold = 0;
2084 u8 coverage_class = 0;
2085
2086 ASSERT_RTNL();
2087
2088 /*
2089 * Try to find the wiphy and netdev. Normally this
2090 * function shouldn't need the netdev, but this is
2091 * done for backward compatibility -- previously
2092 * setting the channel was done per wiphy, but now
2093 * it is per netdev. Previous userland like hostapd
2094 * also passed a netdev to set_wiphy, so that it is
2095 * possible to let that go to the right netdev!
2096 */
2097
2098 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2099 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2100
2101 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2102 if (netdev && netdev->ieee80211_ptr)
2103 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2104 else
2105 netdev = NULL;
2106 }
2107
2108 if (!netdev) {
2109 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2110 info->attrs);
2111 if (IS_ERR(rdev))
2112 return PTR_ERR(rdev);
2113 wdev = NULL;
2114 netdev = NULL;
2115 result = 0;
2116 } else
2117 wdev = netdev->ieee80211_ptr;
2118
2119 /*
2120 * end workaround code, by now the rdev is available
2121 * and locked, and wdev may or may not be NULL.
2122 */
2123
2124 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2125 result = cfg80211_dev_rename(
2126 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2127
2128 if (result)
2129 return result;
2130
2131 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2132 struct ieee80211_txq_params txq_params;
2133 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2134
2135 if (!rdev->ops->set_txq_params)
2136 return -EOPNOTSUPP;
2137
2138 if (!netdev)
2139 return -EINVAL;
2140
2141 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2142 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2143 return -EINVAL;
2144
2145 if (!netif_running(netdev))
2146 return -ENETDOWN;
2147
2148 nla_for_each_nested(nl_txq_params,
2149 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2150 rem_txq_params) {
2151 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2152 nla_data(nl_txq_params),
2153 nla_len(nl_txq_params),
2154 txq_params_policy);
2155 if (result)
2156 return result;
2157 result = parse_txq_params(tb, &txq_params);
2158 if (result)
2159 return result;
2160
2161 result = rdev_set_txq_params(rdev, netdev,
2162 &txq_params);
2163 if (result)
2164 return result;
2165 }
2166 }
2167
2168 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2169 result = __nl80211_set_channel(
2170 rdev,
2171 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2172 info);
2173 if (result)
2174 return result;
2175 }
2176
2177 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2178 struct wireless_dev *txp_wdev = wdev;
2179 enum nl80211_tx_power_setting type;
2180 int idx, mbm = 0;
2181
2182 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2183 txp_wdev = NULL;
2184
2185 if (!rdev->ops->set_tx_power)
2186 return -EOPNOTSUPP;
2187
2188 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2189 type = nla_get_u32(info->attrs[idx]);
2190
2191 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2192 (type != NL80211_TX_POWER_AUTOMATIC))
2193 return -EINVAL;
2194
2195 if (type != NL80211_TX_POWER_AUTOMATIC) {
2196 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2197 mbm = nla_get_u32(info->attrs[idx]);
2198 }
2199
2200 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2201 if (result)
2202 return result;
2203 }
2204
2205 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2206 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2207 u32 tx_ant, rx_ant;
2208 if ((!rdev->wiphy.available_antennas_tx &&
2209 !rdev->wiphy.available_antennas_rx) ||
2210 !rdev->ops->set_antenna)
2211 return -EOPNOTSUPP;
2212
2213 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2214 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2215
2216 /* reject antenna configurations which don't match the
2217 * available antenna masks, except for the "all" mask */
2218 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2219 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2220 return -EINVAL;
2221
2222 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2223 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2224
2225 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2226 if (result)
2227 return result;
2228 }
2229
2230 changed = 0;
2231
2232 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2233 retry_short = nla_get_u8(
2234 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2235 if (retry_short == 0)
2236 return -EINVAL;
2237
2238 changed |= WIPHY_PARAM_RETRY_SHORT;
2239 }
2240
2241 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2242 retry_long = nla_get_u8(
2243 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2244 if (retry_long == 0)
2245 return -EINVAL;
2246
2247 changed |= WIPHY_PARAM_RETRY_LONG;
2248 }
2249
2250 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2251 frag_threshold = nla_get_u32(
2252 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2253 if (frag_threshold < 256)
2254 return -EINVAL;
2255
2256 if (frag_threshold != (u32) -1) {
2257 /*
2258 * Fragments (apart from the last one) are required to
2259 * have even length. Make the fragmentation code
2260 * simpler by stripping LSB should someone try to use
2261 * odd threshold value.
2262 */
2263 frag_threshold &= ~0x1;
2264 }
2265 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2266 }
2267
2268 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2269 rts_threshold = nla_get_u32(
2270 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2271 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2272 }
2273
2274 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2275 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2276 return -EINVAL;
2277
2278 coverage_class = nla_get_u8(
2279 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2280 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2281 }
2282
2283 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2284 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2285 return -EOPNOTSUPP;
2286
2287 changed |= WIPHY_PARAM_DYN_ACK;
2288 }
2289
2290 if (changed) {
2291 u8 old_retry_short, old_retry_long;
2292 u32 old_frag_threshold, old_rts_threshold;
2293 u8 old_coverage_class;
2294
2295 if (!rdev->ops->set_wiphy_params)
2296 return -EOPNOTSUPP;
2297
2298 old_retry_short = rdev->wiphy.retry_short;
2299 old_retry_long = rdev->wiphy.retry_long;
2300 old_frag_threshold = rdev->wiphy.frag_threshold;
2301 old_rts_threshold = rdev->wiphy.rts_threshold;
2302 old_coverage_class = rdev->wiphy.coverage_class;
2303
2304 if (changed & WIPHY_PARAM_RETRY_SHORT)
2305 rdev->wiphy.retry_short = retry_short;
2306 if (changed & WIPHY_PARAM_RETRY_LONG)
2307 rdev->wiphy.retry_long = retry_long;
2308 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2309 rdev->wiphy.frag_threshold = frag_threshold;
2310 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2311 rdev->wiphy.rts_threshold = rts_threshold;
2312 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2313 rdev->wiphy.coverage_class = coverage_class;
2314
2315 result = rdev_set_wiphy_params(rdev, changed);
2316 if (result) {
2317 rdev->wiphy.retry_short = old_retry_short;
2318 rdev->wiphy.retry_long = old_retry_long;
2319 rdev->wiphy.frag_threshold = old_frag_threshold;
2320 rdev->wiphy.rts_threshold = old_rts_threshold;
2321 rdev->wiphy.coverage_class = old_coverage_class;
2322 }
2323 }
2324 return 0;
2325 }
2326
2327 static inline u64 wdev_id(struct wireless_dev *wdev)
2328 {
2329 return (u64)wdev->identifier |
2330 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2331 }
2332
2333 static int nl80211_send_chandef(struct sk_buff *msg,
2334 const struct cfg80211_chan_def *chandef)
2335 {
2336 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2337 return -EINVAL;
2338
2339 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2340 chandef->chan->center_freq))
2341 return -ENOBUFS;
2342 switch (chandef->width) {
2343 case NL80211_CHAN_WIDTH_20_NOHT:
2344 case NL80211_CHAN_WIDTH_20:
2345 case NL80211_CHAN_WIDTH_40:
2346 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2347 cfg80211_get_chandef_type(chandef)))
2348 return -ENOBUFS;
2349 break;
2350 default:
2351 break;
2352 }
2353 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2354 return -ENOBUFS;
2355 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2356 return -ENOBUFS;
2357 if (chandef->center_freq2 &&
2358 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2359 return -ENOBUFS;
2360 return 0;
2361 }
2362
2363 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2364 struct cfg80211_registered_device *rdev,
2365 struct wireless_dev *wdev, bool removal)
2366 {
2367 struct net_device *dev = wdev->netdev;
2368 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2369 void *hdr;
2370
2371 if (removal)
2372 cmd = NL80211_CMD_DEL_INTERFACE;
2373
2374 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2375 if (!hdr)
2376 return -1;
2377
2378 if (dev &&
2379 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2380 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2381 goto nla_put_failure;
2382
2383 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2384 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2385 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2386 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2387 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2388 rdev->devlist_generation ^
2389 (cfg80211_rdev_list_generation << 2)))
2390 goto nla_put_failure;
2391
2392 if (rdev->ops->get_channel) {
2393 int ret;
2394 struct cfg80211_chan_def chandef;
2395
2396 ret = rdev_get_channel(rdev, wdev, &chandef);
2397 if (ret == 0) {
2398 if (nl80211_send_chandef(msg, &chandef))
2399 goto nla_put_failure;
2400 }
2401 }
2402
2403 if (wdev->ssid_len) {
2404 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2405 goto nla_put_failure;
2406 }
2407
2408 genlmsg_end(msg, hdr);
2409 return 0;
2410
2411 nla_put_failure:
2412 genlmsg_cancel(msg, hdr);
2413 return -EMSGSIZE;
2414 }
2415
2416 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2417 {
2418 int wp_idx = 0;
2419 int if_idx = 0;
2420 int wp_start = cb->args[0];
2421 int if_start = cb->args[1];
2422 struct cfg80211_registered_device *rdev;
2423 struct wireless_dev *wdev;
2424
2425 rtnl_lock();
2426 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2427 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2428 continue;
2429 if (wp_idx < wp_start) {
2430 wp_idx++;
2431 continue;
2432 }
2433 if_idx = 0;
2434
2435 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2436 if (if_idx < if_start) {
2437 if_idx++;
2438 continue;
2439 }
2440 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2441 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2442 rdev, wdev, false) < 0) {
2443 goto out;
2444 }
2445 if_idx++;
2446 }
2447
2448 wp_idx++;
2449 }
2450 out:
2451 rtnl_unlock();
2452
2453 cb->args[0] = wp_idx;
2454 cb->args[1] = if_idx;
2455
2456 return skb->len;
2457 }
2458
2459 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2460 {
2461 struct sk_buff *msg;
2462 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2463 struct wireless_dev *wdev = info->user_ptr[1];
2464
2465 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2466 if (!msg)
2467 return -ENOMEM;
2468
2469 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2470 rdev, wdev, false) < 0) {
2471 nlmsg_free(msg);
2472 return -ENOBUFS;
2473 }
2474
2475 return genlmsg_reply(msg, info);
2476 }
2477
2478 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2479 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2480 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2481 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2482 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2483 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2484 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2485 };
2486
2487 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2488 {
2489 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2490 int flag;
2491
2492 *mntrflags = 0;
2493
2494 if (!nla)
2495 return -EINVAL;
2496
2497 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2498 nla, mntr_flags_policy))
2499 return -EINVAL;
2500
2501 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2502 if (flags[flag])
2503 *mntrflags |= (1<<flag);
2504
2505 return 0;
2506 }
2507
2508 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2509 struct net_device *netdev, u8 use_4addr,
2510 enum nl80211_iftype iftype)
2511 {
2512 if (!use_4addr) {
2513 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2514 return -EBUSY;
2515 return 0;
2516 }
2517
2518 switch (iftype) {
2519 case NL80211_IFTYPE_AP_VLAN:
2520 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2521 return 0;
2522 break;
2523 case NL80211_IFTYPE_STATION:
2524 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2525 return 0;
2526 break;
2527 default:
2528 break;
2529 }
2530
2531 return -EOPNOTSUPP;
2532 }
2533
2534 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2535 {
2536 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2537 struct vif_params params;
2538 int err;
2539 enum nl80211_iftype otype, ntype;
2540 struct net_device *dev = info->user_ptr[1];
2541 u32 _flags, *flags = NULL;
2542 bool change = false;
2543
2544 memset(&params, 0, sizeof(params));
2545
2546 otype = ntype = dev->ieee80211_ptr->iftype;
2547
2548 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2549 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2550 if (otype != ntype)
2551 change = true;
2552 if (ntype > NL80211_IFTYPE_MAX)
2553 return -EINVAL;
2554 }
2555
2556 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2557 struct wireless_dev *wdev = dev->ieee80211_ptr;
2558
2559 if (ntype != NL80211_IFTYPE_MESH_POINT)
2560 return -EINVAL;
2561 if (netif_running(dev))
2562 return -EBUSY;
2563
2564 wdev_lock(wdev);
2565 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2566 IEEE80211_MAX_MESH_ID_LEN);
2567 wdev->mesh_id_up_len =
2568 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2569 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2570 wdev->mesh_id_up_len);
2571 wdev_unlock(wdev);
2572 }
2573
2574 if (info->attrs[NL80211_ATTR_4ADDR]) {
2575 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2576 change = true;
2577 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2578 if (err)
2579 return err;
2580 } else {
2581 params.use_4addr = -1;
2582 }
2583
2584 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2585 if (ntype != NL80211_IFTYPE_MONITOR)
2586 return -EINVAL;
2587 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2588 &_flags);
2589 if (err)
2590 return err;
2591
2592 flags = &_flags;
2593 change = true;
2594 }
2595
2596 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2597 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2598 return -EOPNOTSUPP;
2599
2600 if (change)
2601 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2602 else
2603 err = 0;
2604
2605 if (!err && params.use_4addr != -1)
2606 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2607
2608 return err;
2609 }
2610
2611 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2612 {
2613 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2614 struct vif_params params;
2615 struct wireless_dev *wdev;
2616 struct sk_buff *msg, *event;
2617 int err;
2618 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2619 u32 flags;
2620
2621 /* to avoid failing a new interface creation due to pending removal */
2622 cfg80211_destroy_ifaces(rdev);
2623
2624 memset(&params, 0, sizeof(params));
2625
2626 if (!info->attrs[NL80211_ATTR_IFNAME])
2627 return -EINVAL;
2628
2629 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2630 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2631 if (type > NL80211_IFTYPE_MAX)
2632 return -EINVAL;
2633 }
2634
2635 if (!rdev->ops->add_virtual_intf ||
2636 !(rdev->wiphy.interface_modes & (1 << type)))
2637 return -EOPNOTSUPP;
2638
2639 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2640 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2641 info->attrs[NL80211_ATTR_MAC]) {
2642 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2643 ETH_ALEN);
2644 if (!is_valid_ether_addr(params.macaddr))
2645 return -EADDRNOTAVAIL;
2646 }
2647
2648 if (info->attrs[NL80211_ATTR_4ADDR]) {
2649 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2650 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2651 if (err)
2652 return err;
2653 }
2654
2655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2656 if (!msg)
2657 return -ENOMEM;
2658
2659 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2660 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2661 &flags);
2662
2663 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2664 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2665 return -EOPNOTSUPP;
2666
2667 wdev = rdev_add_virtual_intf(rdev,
2668 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2669 type, err ? NULL : &flags, &params);
2670 if (WARN_ON(!wdev)) {
2671 nlmsg_free(msg);
2672 return -EPROTO;
2673 } else if (IS_ERR(wdev)) {
2674 nlmsg_free(msg);
2675 return PTR_ERR(wdev);
2676 }
2677
2678 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2679 wdev->owner_nlportid = info->snd_portid;
2680
2681 switch (type) {
2682 case NL80211_IFTYPE_MESH_POINT:
2683 if (!info->attrs[NL80211_ATTR_MESH_ID])
2684 break;
2685 wdev_lock(wdev);
2686 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2687 IEEE80211_MAX_MESH_ID_LEN);
2688 wdev->mesh_id_up_len =
2689 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2690 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2691 wdev->mesh_id_up_len);
2692 wdev_unlock(wdev);
2693 break;
2694 case NL80211_IFTYPE_P2P_DEVICE:
2695 /*
2696 * P2P Device doesn't have a netdev, so doesn't go
2697 * through the netdev notifier and must be added here
2698 */
2699 mutex_init(&wdev->mtx);
2700 INIT_LIST_HEAD(&wdev->event_list);
2701 spin_lock_init(&wdev->event_lock);
2702 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2703 spin_lock_init(&wdev->mgmt_registrations_lock);
2704
2705 wdev->identifier = ++rdev->wdev_id;
2706 list_add_rcu(&wdev->list, &rdev->wdev_list);
2707 rdev->devlist_generation++;
2708 break;
2709 default:
2710 break;
2711 }
2712
2713 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2714 rdev, wdev, false) < 0) {
2715 nlmsg_free(msg);
2716 return -ENOBUFS;
2717 }
2718
2719 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2720 if (event) {
2721 if (nl80211_send_iface(event, 0, 0, 0,
2722 rdev, wdev, false) < 0) {
2723 nlmsg_free(event);
2724 goto out;
2725 }
2726
2727 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2728 event, 0, NL80211_MCGRP_CONFIG,
2729 GFP_KERNEL);
2730 }
2731
2732 out:
2733 return genlmsg_reply(msg, info);
2734 }
2735
2736 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2737 {
2738 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2739 struct wireless_dev *wdev = info->user_ptr[1];
2740 struct sk_buff *msg;
2741 int status;
2742
2743 if (!rdev->ops->del_virtual_intf)
2744 return -EOPNOTSUPP;
2745
2746 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2747 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2748 nlmsg_free(msg);
2749 msg = NULL;
2750 }
2751
2752 /*
2753 * If we remove a wireless device without a netdev then clear
2754 * user_ptr[1] so that nl80211_post_doit won't dereference it
2755 * to check if it needs to do dev_put(). Otherwise it crashes
2756 * since the wdev has been freed, unlike with a netdev where
2757 * we need the dev_put() for the netdev to really be freed.
2758 */
2759 if (!wdev->netdev)
2760 info->user_ptr[1] = NULL;
2761
2762 status = rdev_del_virtual_intf(rdev, wdev);
2763 if (status >= 0 && msg)
2764 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2765 msg, 0, NL80211_MCGRP_CONFIG,
2766 GFP_KERNEL);
2767 else
2768 nlmsg_free(msg);
2769
2770 return status;
2771 }
2772
2773 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2774 {
2775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2776 struct net_device *dev = info->user_ptr[1];
2777 u16 noack_map;
2778
2779 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2780 return -EINVAL;
2781
2782 if (!rdev->ops->set_noack_map)
2783 return -EOPNOTSUPP;
2784
2785 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2786
2787 return rdev_set_noack_map(rdev, dev, noack_map);
2788 }
2789
2790 struct get_key_cookie {
2791 struct sk_buff *msg;
2792 int error;
2793 int idx;
2794 };
2795
2796 static void get_key_callback(void *c, struct key_params *params)
2797 {
2798 struct nlattr *key;
2799 struct get_key_cookie *cookie = c;
2800
2801 if ((params->key &&
2802 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2803 params->key_len, params->key)) ||
2804 (params->seq &&
2805 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2806 params->seq_len, params->seq)) ||
2807 (params->cipher &&
2808 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2809 params->cipher)))
2810 goto nla_put_failure;
2811
2812 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2813 if (!key)
2814 goto nla_put_failure;
2815
2816 if ((params->key &&
2817 nla_put(cookie->msg, NL80211_KEY_DATA,
2818 params->key_len, params->key)) ||
2819 (params->seq &&
2820 nla_put(cookie->msg, NL80211_KEY_SEQ,
2821 params->seq_len, params->seq)) ||
2822 (params->cipher &&
2823 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2824 params->cipher)))
2825 goto nla_put_failure;
2826
2827 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2828 goto nla_put_failure;
2829
2830 nla_nest_end(cookie->msg, key);
2831
2832 return;
2833 nla_put_failure:
2834 cookie->error = 1;
2835 }
2836
2837 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2838 {
2839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2840 int err;
2841 struct net_device *dev = info->user_ptr[1];
2842 u8 key_idx = 0;
2843 const u8 *mac_addr = NULL;
2844 bool pairwise;
2845 struct get_key_cookie cookie = {
2846 .error = 0,
2847 };
2848 void *hdr;
2849 struct sk_buff *msg;
2850
2851 if (info->attrs[NL80211_ATTR_KEY_IDX])
2852 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2853
2854 if (key_idx > 5)
2855 return -EINVAL;
2856
2857 if (info->attrs[NL80211_ATTR_MAC])
2858 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2859
2860 pairwise = !!mac_addr;
2861 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2862 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2863 if (kt >= NUM_NL80211_KEYTYPES)
2864 return -EINVAL;
2865 if (kt != NL80211_KEYTYPE_GROUP &&
2866 kt != NL80211_KEYTYPE_PAIRWISE)
2867 return -EINVAL;
2868 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2869 }
2870
2871 if (!rdev->ops->get_key)
2872 return -EOPNOTSUPP;
2873
2874 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2875 if (!msg)
2876 return -ENOMEM;
2877
2878 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2879 NL80211_CMD_NEW_KEY);
2880 if (!hdr)
2881 goto nla_put_failure;
2882
2883 cookie.msg = msg;
2884 cookie.idx = key_idx;
2885
2886 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2887 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2888 goto nla_put_failure;
2889 if (mac_addr &&
2890 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2891 goto nla_put_failure;
2892
2893 if (pairwise && mac_addr &&
2894 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2895 return -ENOENT;
2896
2897 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2898 get_key_callback);
2899
2900 if (err)
2901 goto free_msg;
2902
2903 if (cookie.error)
2904 goto nla_put_failure;
2905
2906 genlmsg_end(msg, hdr);
2907 return genlmsg_reply(msg, info);
2908
2909 nla_put_failure:
2910 err = -ENOBUFS;
2911 free_msg:
2912 nlmsg_free(msg);
2913 return err;
2914 }
2915
2916 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2917 {
2918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2919 struct key_parse key;
2920 int err;
2921 struct net_device *dev = info->user_ptr[1];
2922
2923 err = nl80211_parse_key(info, &key);
2924 if (err)
2925 return err;
2926
2927 if (key.idx < 0)
2928 return -EINVAL;
2929
2930 /* only support setting default key */
2931 if (!key.def && !key.defmgmt)
2932 return -EINVAL;
2933
2934 wdev_lock(dev->ieee80211_ptr);
2935
2936 if (key.def) {
2937 if (!rdev->ops->set_default_key) {
2938 err = -EOPNOTSUPP;
2939 goto out;
2940 }
2941
2942 err = nl80211_key_allowed(dev->ieee80211_ptr);
2943 if (err)
2944 goto out;
2945
2946 err = rdev_set_default_key(rdev, dev, key.idx,
2947 key.def_uni, key.def_multi);
2948
2949 if (err)
2950 goto out;
2951
2952 #ifdef CONFIG_CFG80211_WEXT
2953 dev->ieee80211_ptr->wext.default_key = key.idx;
2954 #endif
2955 } else {
2956 if (key.def_uni || !key.def_multi) {
2957 err = -EINVAL;
2958 goto out;
2959 }
2960
2961 if (!rdev->ops->set_default_mgmt_key) {
2962 err = -EOPNOTSUPP;
2963 goto out;
2964 }
2965
2966 err = nl80211_key_allowed(dev->ieee80211_ptr);
2967 if (err)
2968 goto out;
2969
2970 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2971 if (err)
2972 goto out;
2973
2974 #ifdef CONFIG_CFG80211_WEXT
2975 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2976 #endif
2977 }
2978
2979 out:
2980 wdev_unlock(dev->ieee80211_ptr);
2981
2982 return err;
2983 }
2984
2985 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2986 {
2987 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2988 int err;
2989 struct net_device *dev = info->user_ptr[1];
2990 struct key_parse key;
2991 const u8 *mac_addr = NULL;
2992
2993 err = nl80211_parse_key(info, &key);
2994 if (err)
2995 return err;
2996
2997 if (!key.p.key)
2998 return -EINVAL;
2999
3000 if (info->attrs[NL80211_ATTR_MAC])
3001 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3002
3003 if (key.type == -1) {
3004 if (mac_addr)
3005 key.type = NL80211_KEYTYPE_PAIRWISE;
3006 else
3007 key.type = NL80211_KEYTYPE_GROUP;
3008 }
3009
3010 /* for now */
3011 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3012 key.type != NL80211_KEYTYPE_GROUP)
3013 return -EINVAL;
3014
3015 if (!rdev->ops->add_key)
3016 return -EOPNOTSUPP;
3017
3018 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3019 key.type == NL80211_KEYTYPE_PAIRWISE,
3020 mac_addr))
3021 return -EINVAL;
3022
3023 wdev_lock(dev->ieee80211_ptr);
3024 err = nl80211_key_allowed(dev->ieee80211_ptr);
3025 if (!err)
3026 err = rdev_add_key(rdev, dev, key.idx,
3027 key.type == NL80211_KEYTYPE_PAIRWISE,
3028 mac_addr, &key.p);
3029 wdev_unlock(dev->ieee80211_ptr);
3030
3031 return err;
3032 }
3033
3034 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3035 {
3036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3037 int err;
3038 struct net_device *dev = info->user_ptr[1];
3039 u8 *mac_addr = NULL;
3040 struct key_parse key;
3041
3042 err = nl80211_parse_key(info, &key);
3043 if (err)
3044 return err;
3045
3046 if (info->attrs[NL80211_ATTR_MAC])
3047 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3048
3049 if (key.type == -1) {
3050 if (mac_addr)
3051 key.type = NL80211_KEYTYPE_PAIRWISE;
3052 else
3053 key.type = NL80211_KEYTYPE_GROUP;
3054 }
3055
3056 /* for now */
3057 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3058 key.type != NL80211_KEYTYPE_GROUP)
3059 return -EINVAL;
3060
3061 if (!rdev->ops->del_key)
3062 return -EOPNOTSUPP;
3063
3064 wdev_lock(dev->ieee80211_ptr);
3065 err = nl80211_key_allowed(dev->ieee80211_ptr);
3066
3067 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3068 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3069 err = -ENOENT;
3070
3071 if (!err)
3072 err = rdev_del_key(rdev, dev, key.idx,
3073 key.type == NL80211_KEYTYPE_PAIRWISE,
3074 mac_addr);
3075
3076 #ifdef CONFIG_CFG80211_WEXT
3077 if (!err) {
3078 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3079 dev->ieee80211_ptr->wext.default_key = -1;
3080 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3081 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3082 }
3083 #endif
3084 wdev_unlock(dev->ieee80211_ptr);
3085
3086 return err;
3087 }
3088
3089 /* This function returns an error or the number of nested attributes */
3090 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3091 {
3092 struct nlattr *attr;
3093 int n_entries = 0, tmp;
3094
3095 nla_for_each_nested(attr, nl_attr, tmp) {
3096 if (nla_len(attr) != ETH_ALEN)
3097 return -EINVAL;
3098
3099 n_entries++;
3100 }
3101
3102 return n_entries;
3103 }
3104
3105 /*
3106 * This function parses ACL information and allocates memory for ACL data.
3107 * On successful return, the calling function is responsible to free the
3108 * ACL buffer returned by this function.
3109 */
3110 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3111 struct genl_info *info)
3112 {
3113 enum nl80211_acl_policy acl_policy;
3114 struct nlattr *attr;
3115 struct cfg80211_acl_data *acl;
3116 int i = 0, n_entries, tmp;
3117
3118 if (!wiphy->max_acl_mac_addrs)
3119 return ERR_PTR(-EOPNOTSUPP);
3120
3121 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3122 return ERR_PTR(-EINVAL);
3123
3124 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3125 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3126 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3127 return ERR_PTR(-EINVAL);
3128
3129 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3130 return ERR_PTR(-EINVAL);
3131
3132 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3133 if (n_entries < 0)
3134 return ERR_PTR(n_entries);
3135
3136 if (n_entries > wiphy->max_acl_mac_addrs)
3137 return ERR_PTR(-ENOTSUPP);
3138
3139 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3140 GFP_KERNEL);
3141 if (!acl)
3142 return ERR_PTR(-ENOMEM);
3143
3144 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3145 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3146 i++;
3147 }
3148
3149 acl->n_acl_entries = n_entries;
3150 acl->acl_policy = acl_policy;
3151
3152 return acl;
3153 }
3154
3155 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3156 {
3157 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3158 struct net_device *dev = info->user_ptr[1];
3159 struct cfg80211_acl_data *acl;
3160 int err;
3161
3162 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3163 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3164 return -EOPNOTSUPP;
3165
3166 if (!dev->ieee80211_ptr->beacon_interval)
3167 return -EINVAL;
3168
3169 acl = parse_acl_data(&rdev->wiphy, info);
3170 if (IS_ERR(acl))
3171 return PTR_ERR(acl);
3172
3173 err = rdev_set_mac_acl(rdev, dev, acl);
3174
3175 kfree(acl);
3176
3177 return err;
3178 }
3179
3180 static int nl80211_parse_beacon(struct nlattr *attrs[],
3181 struct cfg80211_beacon_data *bcn)
3182 {
3183 bool haveinfo = false;
3184
3185 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3186 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3187 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3189 return -EINVAL;
3190
3191 memset(bcn, 0, sizeof(*bcn));
3192
3193 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3194 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3195 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3196 if (!bcn->head_len)
3197 return -EINVAL;
3198 haveinfo = true;
3199 }
3200
3201 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3202 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3203 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3204 haveinfo = true;
3205 }
3206
3207 if (!haveinfo)
3208 return -EINVAL;
3209
3210 if (attrs[NL80211_ATTR_IE]) {
3211 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3212 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3213 }
3214
3215 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3216 bcn->proberesp_ies =
3217 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3218 bcn->proberesp_ies_len =
3219 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3220 }
3221
3222 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3223 bcn->assocresp_ies =
3224 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3225 bcn->assocresp_ies_len =
3226 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3227 }
3228
3229 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3230 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3231 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3232 }
3233
3234 return 0;
3235 }
3236
3237 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3238 struct cfg80211_ap_settings *params)
3239 {
3240 struct wireless_dev *wdev;
3241 bool ret = false;
3242
3243 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3244 if (wdev->iftype != NL80211_IFTYPE_AP &&
3245 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3246 continue;
3247
3248 if (!wdev->preset_chandef.chan)
3249 continue;
3250
3251 params->chandef = wdev->preset_chandef;
3252 ret = true;
3253 break;
3254 }
3255
3256 return ret;
3257 }
3258
3259 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3260 enum nl80211_auth_type auth_type,
3261 enum nl80211_commands cmd)
3262 {
3263 if (auth_type > NL80211_AUTHTYPE_MAX)
3264 return false;
3265
3266 switch (cmd) {
3267 case NL80211_CMD_AUTHENTICATE:
3268 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3269 auth_type == NL80211_AUTHTYPE_SAE)
3270 return false;
3271 return true;
3272 case NL80211_CMD_CONNECT:
3273 case NL80211_CMD_START_AP:
3274 /* SAE not supported yet */
3275 if (auth_type == NL80211_AUTHTYPE_SAE)
3276 return false;
3277 return true;
3278 default:
3279 return false;
3280 }
3281 }
3282
3283 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3284 {
3285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3286 struct net_device *dev = info->user_ptr[1];
3287 struct wireless_dev *wdev = dev->ieee80211_ptr;
3288 struct cfg80211_ap_settings params;
3289 int err;
3290
3291 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3292 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3293 return -EOPNOTSUPP;
3294
3295 if (!rdev->ops->start_ap)
3296 return -EOPNOTSUPP;
3297
3298 if (wdev->beacon_interval)
3299 return -EALREADY;
3300
3301 memset(&params, 0, sizeof(params));
3302
3303 /* these are required for START_AP */
3304 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3305 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3306 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3307 return -EINVAL;
3308
3309 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3310 if (err)
3311 return err;
3312
3313 params.beacon_interval =
3314 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3315 params.dtim_period =
3316 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3317
3318 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3319 if (err)
3320 return err;
3321
3322 /*
3323 * In theory, some of these attributes should be required here
3324 * but since they were not used when the command was originally
3325 * added, keep them optional for old user space programs to let
3326 * them continue to work with drivers that do not need the
3327 * additional information -- drivers must check!
3328 */
3329 if (info->attrs[NL80211_ATTR_SSID]) {
3330 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3331 params.ssid_len =
3332 nla_len(info->attrs[NL80211_ATTR_SSID]);
3333 if (params.ssid_len == 0 ||
3334 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3335 return -EINVAL;
3336 }
3337
3338 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3339 params.hidden_ssid = nla_get_u32(
3340 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3341 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3342 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3343 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3344 return -EINVAL;
3345 }
3346
3347 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3348
3349 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3350 params.auth_type = nla_get_u32(
3351 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3352 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3353 NL80211_CMD_START_AP))
3354 return -EINVAL;
3355 } else
3356 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3357
3358 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3359 NL80211_MAX_NR_CIPHER_SUITES);
3360 if (err)
3361 return err;
3362
3363 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3364 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3365 return -EOPNOTSUPP;
3366 params.inactivity_timeout = nla_get_u16(
3367 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3368 }
3369
3370 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3371 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3372 return -EINVAL;
3373 params.p2p_ctwindow =
3374 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3375 if (params.p2p_ctwindow > 127)
3376 return -EINVAL;
3377 if (params.p2p_ctwindow != 0 &&
3378 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3379 return -EINVAL;
3380 }
3381
3382 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3383 u8 tmp;
3384
3385 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3386 return -EINVAL;
3387 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3388 if (tmp > 1)
3389 return -EINVAL;
3390 params.p2p_opp_ps = tmp;
3391 if (params.p2p_opp_ps != 0 &&
3392 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3393 return -EINVAL;
3394 }
3395
3396 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3397 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3398 if (err)
3399 return err;
3400 } else if (wdev->preset_chandef.chan) {
3401 params.chandef = wdev->preset_chandef;
3402 } else if (!nl80211_get_ap_channel(rdev, &params))
3403 return -EINVAL;
3404
3405 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3406 wdev->iftype))
3407 return -EINVAL;
3408
3409 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3410 params.acl = parse_acl_data(&rdev->wiphy, info);
3411 if (IS_ERR(params.acl))
3412 return PTR_ERR(params.acl);
3413 }
3414
3415 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3416 params.smps_mode =
3417 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3418 switch (params.smps_mode) {
3419 case NL80211_SMPS_OFF:
3420 break;
3421 case NL80211_SMPS_STATIC:
3422 if (!(rdev->wiphy.features &
3423 NL80211_FEATURE_STATIC_SMPS))
3424 return -EINVAL;
3425 break;
3426 case NL80211_SMPS_DYNAMIC:
3427 if (!(rdev->wiphy.features &
3428 NL80211_FEATURE_DYNAMIC_SMPS))
3429 return -EINVAL;
3430 break;
3431 default:
3432 return -EINVAL;
3433 }
3434 } else {
3435 params.smps_mode = NL80211_SMPS_OFF;
3436 }
3437
3438 wdev_lock(wdev);
3439 err = rdev_start_ap(rdev, dev, &params);
3440 if (!err) {
3441 wdev->preset_chandef = params.chandef;
3442 wdev->beacon_interval = params.beacon_interval;
3443 wdev->chandef = params.chandef;
3444 wdev->ssid_len = params.ssid_len;
3445 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3446 }
3447 wdev_unlock(wdev);
3448
3449 kfree(params.acl);
3450
3451 return err;
3452 }
3453
3454 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3455 {
3456 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3457 struct net_device *dev = info->user_ptr[1];
3458 struct wireless_dev *wdev = dev->ieee80211_ptr;
3459 struct cfg80211_beacon_data params;
3460 int err;
3461
3462 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3463 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3464 return -EOPNOTSUPP;
3465
3466 if (!rdev->ops->change_beacon)
3467 return -EOPNOTSUPP;
3468
3469 if (!wdev->beacon_interval)
3470 return -EINVAL;
3471
3472 err = nl80211_parse_beacon(info->attrs, &params);
3473 if (err)
3474 return err;
3475
3476 wdev_lock(wdev);
3477 err = rdev_change_beacon(rdev, dev, &params);
3478 wdev_unlock(wdev);
3479
3480 return err;
3481 }
3482
3483 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3484 {
3485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3486 struct net_device *dev = info->user_ptr[1];
3487
3488 return cfg80211_stop_ap(rdev, dev, false);
3489 }
3490
3491 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3492 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3493 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3494 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3495 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3496 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3497 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3498 };
3499
3500 static int parse_station_flags(struct genl_info *info,
3501 enum nl80211_iftype iftype,
3502 struct station_parameters *params)
3503 {
3504 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3505 struct nlattr *nla;
3506 int flag;
3507
3508 /*
3509 * Try parsing the new attribute first so userspace
3510 * can specify both for older kernels.
3511 */
3512 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3513 if (nla) {
3514 struct nl80211_sta_flag_update *sta_flags;
3515
3516 sta_flags = nla_data(nla);
3517 params->sta_flags_mask = sta_flags->mask;
3518 params->sta_flags_set = sta_flags->set;
3519 params->sta_flags_set &= params->sta_flags_mask;
3520 if ((params->sta_flags_mask |
3521 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3522 return -EINVAL;
3523 return 0;
3524 }
3525
3526 /* if present, parse the old attribute */
3527
3528 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3529 if (!nla)
3530 return 0;
3531
3532 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3533 nla, sta_flags_policy))
3534 return -EINVAL;
3535
3536 /*
3537 * Only allow certain flags for interface types so that
3538 * other attributes are silently ignored. Remember that
3539 * this is backward compatibility code with old userspace
3540 * and shouldn't be hit in other cases anyway.
3541 */
3542 switch (iftype) {
3543 case NL80211_IFTYPE_AP:
3544 case NL80211_IFTYPE_AP_VLAN:
3545 case NL80211_IFTYPE_P2P_GO:
3546 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3547 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3548 BIT(NL80211_STA_FLAG_WME) |
3549 BIT(NL80211_STA_FLAG_MFP);
3550 break;
3551 case NL80211_IFTYPE_P2P_CLIENT:
3552 case NL80211_IFTYPE_STATION:
3553 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3554 BIT(NL80211_STA_FLAG_TDLS_PEER);
3555 break;
3556 case NL80211_IFTYPE_MESH_POINT:
3557 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3558 BIT(NL80211_STA_FLAG_MFP) |
3559 BIT(NL80211_STA_FLAG_AUTHORIZED);
3560 default:
3561 return -EINVAL;
3562 }
3563
3564 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3565 if (flags[flag]) {
3566 params->sta_flags_set |= (1<<flag);
3567
3568 /* no longer support new API additions in old API */
3569 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3570 return -EINVAL;
3571 }
3572 }
3573
3574 return 0;
3575 }
3576
3577 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3578 int attr)
3579 {
3580 struct nlattr *rate;
3581 u32 bitrate;
3582 u16 bitrate_compat;
3583 enum nl80211_attrs rate_flg;
3584
3585 rate = nla_nest_start(msg, attr);
3586 if (!rate)
3587 return false;
3588
3589 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3590 bitrate = cfg80211_calculate_bitrate(info);
3591 /* report 16-bit bitrate only if we can */
3592 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3593 if (bitrate > 0 &&
3594 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3595 return false;
3596 if (bitrate_compat > 0 &&
3597 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3598 return false;
3599
3600 switch (info->bw) {
3601 case RATE_INFO_BW_5:
3602 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3603 break;
3604 case RATE_INFO_BW_10:
3605 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3606 break;
3607 default:
3608 WARN_ON(1);
3609 /* fall through */
3610 case RATE_INFO_BW_20:
3611 rate_flg = 0;
3612 break;
3613 case RATE_INFO_BW_40:
3614 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3615 break;
3616 case RATE_INFO_BW_80:
3617 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3618 break;
3619 case RATE_INFO_BW_160:
3620 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3621 break;
3622 }
3623
3624 if (rate_flg && nla_put_flag(msg, rate_flg))
3625 return false;
3626
3627 if (info->flags & RATE_INFO_FLAGS_MCS) {
3628 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3629 return false;
3630 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3631 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3632 return false;
3633 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3634 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3635 return false;
3636 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3637 return false;
3638 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3639 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3640 return false;
3641 }
3642
3643 nla_nest_end(msg, rate);
3644 return true;
3645 }
3646
3647 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3648 int id)
3649 {
3650 void *attr;
3651 int i = 0;
3652
3653 if (!mask)
3654 return true;
3655
3656 attr = nla_nest_start(msg, id);
3657 if (!attr)
3658 return false;
3659
3660 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3661 if (!(mask & BIT(i)))
3662 continue;
3663
3664 if (nla_put_u8(msg, i, signal[i]))
3665 return false;
3666 }
3667
3668 nla_nest_end(msg, attr);
3669
3670 return true;
3671 }
3672
3673 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3674 u32 seq, int flags,
3675 struct cfg80211_registered_device *rdev,
3676 struct net_device *dev,
3677 const u8 *mac_addr, struct station_info *sinfo)
3678 {
3679 void *hdr;
3680 struct nlattr *sinfoattr, *bss_param;
3681
3682 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3683 if (!hdr)
3684 return -1;
3685
3686 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3687 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3688 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3689 goto nla_put_failure;
3690
3691 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3692 if (!sinfoattr)
3693 goto nla_put_failure;
3694
3695 #define PUT_SINFO(attr, memb, type) do { \
3696 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3697 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3698 sinfo->memb)) \
3699 goto nla_put_failure; \
3700 } while (0)
3701
3702 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3703 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3704
3705 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3706 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3707 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3708 (u32)sinfo->rx_bytes))
3709 goto nla_put_failure;
3710
3711 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3712 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3713 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3714 (u32)sinfo->tx_bytes))
3715 goto nla_put_failure;
3716
3717 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3718 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3719 PUT_SINFO(LLID, llid, u16);
3720 PUT_SINFO(PLID, plid, u16);
3721 PUT_SINFO(PLINK_STATE, plink_state, u8);
3722
3723 switch (rdev->wiphy.signal_type) {
3724 case CFG80211_SIGNAL_TYPE_MBM:
3725 PUT_SINFO(SIGNAL, signal, u8);
3726 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3727 break;
3728 default:
3729 break;
3730 }
3731 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3732 if (!nl80211_put_signal(msg, sinfo->chains,
3733 sinfo->chain_signal,
3734 NL80211_STA_INFO_CHAIN_SIGNAL))
3735 goto nla_put_failure;
3736 }
3737 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3738 if (!nl80211_put_signal(msg, sinfo->chains,
3739 sinfo->chain_signal_avg,
3740 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3741 goto nla_put_failure;
3742 }
3743 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3744 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3745 NL80211_STA_INFO_TX_BITRATE))
3746 goto nla_put_failure;
3747 }
3748 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3749 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3750 NL80211_STA_INFO_RX_BITRATE))
3751 goto nla_put_failure;
3752 }
3753
3754 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3755 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3756 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3757 PUT_SINFO(TX_FAILED, tx_failed, u32);
3758 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3759 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3760 PUT_SINFO(LOCAL_PM, local_pm, u32);
3761 PUT_SINFO(PEER_PM, peer_pm, u32);
3762 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3763
3764 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3765 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3766 if (!bss_param)
3767 goto nla_put_failure;
3768
3769 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3770 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3771 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3772 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3773 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3774 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3775 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3776 sinfo->bss_param.dtim_period) ||
3777 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3778 sinfo->bss_param.beacon_interval))
3779 goto nla_put_failure;
3780
3781 nla_nest_end(msg, bss_param);
3782 }
3783 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3784 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3785 sizeof(struct nl80211_sta_flag_update),
3786 &sinfo->sta_flags))
3787 goto nla_put_failure;
3788
3789 PUT_SINFO(T_OFFSET, t_offset, u64);
3790 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3791 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3792 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3793
3794 #undef PUT_SINFO
3795
3796 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3797 struct nlattr *tidsattr;
3798 int tid;
3799
3800 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3801 if (!tidsattr)
3802 goto nla_put_failure;
3803
3804 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3805 struct cfg80211_tid_stats *tidstats;
3806 struct nlattr *tidattr;
3807
3808 tidstats = &sinfo->pertid[tid];
3809
3810 if (!tidstats->filled)
3811 continue;
3812
3813 tidattr = nla_nest_start(msg, tid + 1);
3814 if (!tidattr)
3815 goto nla_put_failure;
3816
3817 #define PUT_TIDVAL(attr, memb, type) do { \
3818 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3819 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3820 tidstats->memb)) \
3821 goto nla_put_failure; \
3822 } while (0)
3823
3824 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3825 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3826 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3827 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3828
3829 #undef PUT_TIDVAL
3830 nla_nest_end(msg, tidattr);
3831 }
3832
3833 nla_nest_end(msg, tidsattr);
3834 }
3835
3836 nla_nest_end(msg, sinfoattr);
3837
3838 if (sinfo->assoc_req_ies_len &&
3839 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3840 sinfo->assoc_req_ies))
3841 goto nla_put_failure;
3842
3843 genlmsg_end(msg, hdr);
3844 return 0;
3845
3846 nla_put_failure:
3847 genlmsg_cancel(msg, hdr);
3848 return -EMSGSIZE;
3849 }
3850
3851 static int nl80211_dump_station(struct sk_buff *skb,
3852 struct netlink_callback *cb)
3853 {
3854 struct station_info sinfo;
3855 struct cfg80211_registered_device *rdev;
3856 struct wireless_dev *wdev;
3857 u8 mac_addr[ETH_ALEN];
3858 int sta_idx = cb->args[2];
3859 int err;
3860
3861 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3862 if (err)
3863 return err;
3864
3865 if (!wdev->netdev) {
3866 err = -EINVAL;
3867 goto out_err;
3868 }
3869
3870 if (!rdev->ops->dump_station) {
3871 err = -EOPNOTSUPP;
3872 goto out_err;
3873 }
3874
3875 while (1) {
3876 memset(&sinfo, 0, sizeof(sinfo));
3877 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3878 mac_addr, &sinfo);
3879 if (err == -ENOENT)
3880 break;
3881 if (err)
3882 goto out_err;
3883
3884 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3885 NETLINK_CB(cb->skb).portid,
3886 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3887 rdev, wdev->netdev, mac_addr,
3888 &sinfo) < 0)
3889 goto out;
3890
3891 sta_idx++;
3892 }
3893
3894
3895 out:
3896 cb->args[2] = sta_idx;
3897 err = skb->len;
3898 out_err:
3899 nl80211_finish_wdev_dump(rdev);
3900
3901 return err;
3902 }
3903
3904 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3905 {
3906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3907 struct net_device *dev = info->user_ptr[1];
3908 struct station_info sinfo;
3909 struct sk_buff *msg;
3910 u8 *mac_addr = NULL;
3911 int err;
3912
3913 memset(&sinfo, 0, sizeof(sinfo));
3914
3915 if (!info->attrs[NL80211_ATTR_MAC])
3916 return -EINVAL;
3917
3918 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3919
3920 if (!rdev->ops->get_station)
3921 return -EOPNOTSUPP;
3922
3923 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3924 if (err)
3925 return err;
3926
3927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3928 if (!msg)
3929 return -ENOMEM;
3930
3931 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3932 info->snd_portid, info->snd_seq, 0,
3933 rdev, dev, mac_addr, &sinfo) < 0) {
3934 nlmsg_free(msg);
3935 return -ENOBUFS;
3936 }
3937
3938 return genlmsg_reply(msg, info);
3939 }
3940
3941 int cfg80211_check_station_change(struct wiphy *wiphy,
3942 struct station_parameters *params,
3943 enum cfg80211_station_type statype)
3944 {
3945 if (params->listen_interval != -1)
3946 return -EINVAL;
3947 if (params->aid &&
3948 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3949 return -EINVAL;
3950
3951 /* When you run into this, adjust the code below for the new flag */
3952 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3953
3954 switch (statype) {
3955 case CFG80211_STA_MESH_PEER_KERNEL:
3956 case CFG80211_STA_MESH_PEER_USER:
3957 /*
3958 * No ignoring the TDLS flag here -- the userspace mesh
3959 * code doesn't have the bug of including TDLS in the
3960 * mask everywhere.
3961 */
3962 if (params->sta_flags_mask &
3963 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3964 BIT(NL80211_STA_FLAG_MFP) |
3965 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3966 return -EINVAL;
3967 break;
3968 case CFG80211_STA_TDLS_PEER_SETUP:
3969 case CFG80211_STA_TDLS_PEER_ACTIVE:
3970 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3971 return -EINVAL;
3972 /* ignore since it can't change */
3973 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3974 break;
3975 default:
3976 /* disallow mesh-specific things */
3977 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3978 return -EINVAL;
3979 if (params->local_pm)
3980 return -EINVAL;
3981 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3982 return -EINVAL;
3983 }
3984
3985 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3986 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3987 /* TDLS can't be set, ... */
3988 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3989 return -EINVAL;
3990 /*
3991 * ... but don't bother the driver with it. This works around
3992 * a hostapd/wpa_supplicant issue -- it always includes the
3993 * TLDS_PEER flag in the mask even for AP mode.
3994 */
3995 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3996 }
3997
3998 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3999 /* reject other things that can't change */
4000 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4001 return -EINVAL;
4002 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4003 return -EINVAL;
4004 if (params->supported_rates)
4005 return -EINVAL;
4006 if (params->ext_capab || params->ht_capa || params->vht_capa)
4007 return -EINVAL;
4008 }
4009
4010 if (statype != CFG80211_STA_AP_CLIENT) {
4011 if (params->vlan)
4012 return -EINVAL;
4013 }
4014
4015 switch (statype) {
4016 case CFG80211_STA_AP_MLME_CLIENT:
4017 /* Use this only for authorizing/unauthorizing a station */
4018 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4019 return -EOPNOTSUPP;
4020 break;
4021 case CFG80211_STA_AP_CLIENT:
4022 /* accept only the listed bits */
4023 if (params->sta_flags_mask &
4024 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4025 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4026 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4027 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4028 BIT(NL80211_STA_FLAG_WME) |
4029 BIT(NL80211_STA_FLAG_MFP)))
4030 return -EINVAL;
4031
4032 /* but authenticated/associated only if driver handles it */
4033 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4034 params->sta_flags_mask &
4035 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4036 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4037 return -EINVAL;
4038 break;
4039 case CFG80211_STA_IBSS:
4040 case CFG80211_STA_AP_STA:
4041 /* reject any changes other than AUTHORIZED */
4042 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4043 return -EINVAL;
4044 break;
4045 case CFG80211_STA_TDLS_PEER_SETUP:
4046 /* reject any changes other than AUTHORIZED or WME */
4047 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4048 BIT(NL80211_STA_FLAG_WME)))
4049 return -EINVAL;
4050 /* force (at least) rates when authorizing */
4051 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4052 !params->supported_rates)
4053 return -EINVAL;
4054 break;
4055 case CFG80211_STA_TDLS_PEER_ACTIVE:
4056 /* reject any changes */
4057 return -EINVAL;
4058 case CFG80211_STA_MESH_PEER_KERNEL:
4059 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4060 return -EINVAL;
4061 break;
4062 case CFG80211_STA_MESH_PEER_USER:
4063 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4064 return -EINVAL;
4065 break;
4066 }
4067
4068 return 0;
4069 }
4070 EXPORT_SYMBOL(cfg80211_check_station_change);
4071
4072 /*
4073 * Get vlan interface making sure it is running and on the right wiphy.
4074 */
4075 static struct net_device *get_vlan(struct genl_info *info,
4076 struct cfg80211_registered_device *rdev)
4077 {
4078 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4079 struct net_device *v;
4080 int ret;
4081
4082 if (!vlanattr)
4083 return NULL;
4084
4085 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4086 if (!v)
4087 return ERR_PTR(-ENODEV);
4088
4089 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4090 ret = -EINVAL;
4091 goto error;
4092 }
4093
4094 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4095 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4096 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4097 ret = -EINVAL;
4098 goto error;
4099 }
4100
4101 if (!netif_running(v)) {
4102 ret = -ENETDOWN;
4103 goto error;
4104 }
4105
4106 return v;
4107 error:
4108 dev_put(v);
4109 return ERR_PTR(ret);
4110 }
4111
4112 static const struct nla_policy
4113 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4114 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4115 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4116 };
4117
4118 static int nl80211_parse_sta_wme(struct genl_info *info,
4119 struct station_parameters *params)
4120 {
4121 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4122 struct nlattr *nla;
4123 int err;
4124
4125 /* parse WME attributes if present */
4126 if (!info->attrs[NL80211_ATTR_STA_WME])
4127 return 0;
4128
4129 nla = info->attrs[NL80211_ATTR_STA_WME];
4130 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4131 nl80211_sta_wme_policy);
4132 if (err)
4133 return err;
4134
4135 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4136 params->uapsd_queues = nla_get_u8(
4137 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4138 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4139 return -EINVAL;
4140
4141 if (tb[NL80211_STA_WME_MAX_SP])
4142 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4143
4144 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4145 return -EINVAL;
4146
4147 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4148
4149 return 0;
4150 }
4151
4152 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4153 struct station_parameters *params)
4154 {
4155 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4156 params->supported_channels =
4157 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4158 params->supported_channels_len =
4159 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4160 /*
4161 * Need to include at least one (first channel, number of
4162 * channels) tuple for each subband, and must have proper
4163 * tuples for the rest of the data as well.
4164 */
4165 if (params->supported_channels_len < 2)
4166 return -EINVAL;
4167 if (params->supported_channels_len % 2)
4168 return -EINVAL;
4169 }
4170
4171 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4172 params->supported_oper_classes =
4173 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4174 params->supported_oper_classes_len =
4175 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4176 /*
4177 * The value of the Length field of the Supported Operating
4178 * Classes element is between 2 and 253.
4179 */
4180 if (params->supported_oper_classes_len < 2 ||
4181 params->supported_oper_classes_len > 253)
4182 return -EINVAL;
4183 }
4184 return 0;
4185 }
4186
4187 static int nl80211_set_station_tdls(struct genl_info *info,
4188 struct station_parameters *params)
4189 {
4190 int err;
4191 /* Dummy STA entry gets updated once the peer capabilities are known */
4192 if (info->attrs[NL80211_ATTR_PEER_AID])
4193 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4194 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4195 params->ht_capa =
4196 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4197 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4198 params->vht_capa =
4199 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4200
4201 err = nl80211_parse_sta_channel_info(info, params);
4202 if (err)
4203 return err;
4204
4205 return nl80211_parse_sta_wme(info, params);
4206 }
4207
4208 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4209 {
4210 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4211 struct net_device *dev = info->user_ptr[1];
4212 struct station_parameters params;
4213 u8 *mac_addr;
4214 int err;
4215
4216 memset(&params, 0, sizeof(params));
4217
4218 params.listen_interval = -1;
4219
4220 if (!rdev->ops->change_station)
4221 return -EOPNOTSUPP;
4222
4223 if (info->attrs[NL80211_ATTR_STA_AID])
4224 return -EINVAL;
4225
4226 if (!info->attrs[NL80211_ATTR_MAC])
4227 return -EINVAL;
4228
4229 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4230
4231 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4232 params.supported_rates =
4233 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4234 params.supported_rates_len =
4235 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4236 }
4237
4238 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4239 params.capability =
4240 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4241 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4242 }
4243
4244 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4245 params.ext_capab =
4246 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4247 params.ext_capab_len =
4248 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4249 }
4250
4251 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4252 return -EINVAL;
4253
4254 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4255 return -EINVAL;
4256
4257 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4258 params.plink_action =
4259 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4260 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4261 return -EINVAL;
4262 }
4263
4264 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4265 params.plink_state =
4266 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4267 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4268 return -EINVAL;
4269 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4270 }
4271
4272 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4273 enum nl80211_mesh_power_mode pm = nla_get_u32(
4274 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4275
4276 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4277 pm > NL80211_MESH_POWER_MAX)
4278 return -EINVAL;
4279
4280 params.local_pm = pm;
4281 }
4282
4283 /* Include parameters for TDLS peer (will check later) */
4284 err = nl80211_set_station_tdls(info, &params);
4285 if (err)
4286 return err;
4287
4288 params.vlan = get_vlan(info, rdev);
4289 if (IS_ERR(params.vlan))
4290 return PTR_ERR(params.vlan);
4291
4292 switch (dev->ieee80211_ptr->iftype) {
4293 case NL80211_IFTYPE_AP:
4294 case NL80211_IFTYPE_AP_VLAN:
4295 case NL80211_IFTYPE_P2P_GO:
4296 case NL80211_IFTYPE_P2P_CLIENT:
4297 case NL80211_IFTYPE_STATION:
4298 case NL80211_IFTYPE_ADHOC:
4299 case NL80211_IFTYPE_MESH_POINT:
4300 break;
4301 default:
4302 err = -EOPNOTSUPP;
4303 goto out_put_vlan;
4304 }
4305
4306 /* driver will call cfg80211_check_station_change() */
4307 err = rdev_change_station(rdev, dev, mac_addr, &params);
4308
4309 out_put_vlan:
4310 if (params.vlan)
4311 dev_put(params.vlan);
4312
4313 return err;
4314 }
4315
4316 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4317 {
4318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4319 int err;
4320 struct net_device *dev = info->user_ptr[1];
4321 struct station_parameters params;
4322 u8 *mac_addr = NULL;
4323
4324 memset(&params, 0, sizeof(params));
4325
4326 if (!rdev->ops->add_station)
4327 return -EOPNOTSUPP;
4328
4329 if (!info->attrs[NL80211_ATTR_MAC])
4330 return -EINVAL;
4331
4332 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4333 return -EINVAL;
4334
4335 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4336 return -EINVAL;
4337
4338 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4339 !info->attrs[NL80211_ATTR_PEER_AID])
4340 return -EINVAL;
4341
4342 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4343 params.supported_rates =
4344 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4345 params.supported_rates_len =
4346 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4347 params.listen_interval =
4348 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4349
4350 if (info->attrs[NL80211_ATTR_PEER_AID])
4351 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4352 else
4353 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4354 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4355 return -EINVAL;
4356
4357 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4358 params.capability =
4359 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4360 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4361 }
4362
4363 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4364 params.ext_capab =
4365 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4366 params.ext_capab_len =
4367 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4368 }
4369
4370 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4371 params.ht_capa =
4372 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4373
4374 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4375 params.vht_capa =
4376 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4377
4378 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4379 params.opmode_notif_used = true;
4380 params.opmode_notif =
4381 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4382 }
4383
4384 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4385 params.plink_action =
4386 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4387 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4388 return -EINVAL;
4389 }
4390
4391 err = nl80211_parse_sta_channel_info(info, &params);
4392 if (err)
4393 return err;
4394
4395 err = nl80211_parse_sta_wme(info, &params);
4396 if (err)
4397 return err;
4398
4399 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4400 return -EINVAL;
4401
4402 /* When you run into this, adjust the code below for the new flag */
4403 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4404
4405 switch (dev->ieee80211_ptr->iftype) {
4406 case NL80211_IFTYPE_AP:
4407 case NL80211_IFTYPE_AP_VLAN:
4408 case NL80211_IFTYPE_P2P_GO:
4409 /* ignore WME attributes if iface/sta is not capable */
4410 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4411 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4412 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4413
4414 /* TDLS peers cannot be added */
4415 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4416 info->attrs[NL80211_ATTR_PEER_AID])
4417 return -EINVAL;
4418 /* but don't bother the driver with it */
4419 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4420
4421 /* allow authenticated/associated only if driver handles it */
4422 if (!(rdev->wiphy.features &
4423 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4424 params.sta_flags_mask &
4425 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4426 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4427 return -EINVAL;
4428
4429 /* must be last in here for error handling */
4430 params.vlan = get_vlan(info, rdev);
4431 if (IS_ERR(params.vlan))
4432 return PTR_ERR(params.vlan);
4433 break;
4434 case NL80211_IFTYPE_MESH_POINT:
4435 /* ignore uAPSD data */
4436 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4437
4438 /* associated is disallowed */
4439 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4440 return -EINVAL;
4441 /* TDLS peers cannot be added */
4442 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4443 info->attrs[NL80211_ATTR_PEER_AID])
4444 return -EINVAL;
4445 break;
4446 case NL80211_IFTYPE_STATION:
4447 case NL80211_IFTYPE_P2P_CLIENT:
4448 /* ignore uAPSD data */
4449 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4450
4451 /* these are disallowed */
4452 if (params.sta_flags_mask &
4453 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4454 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4455 return -EINVAL;
4456 /* Only TDLS peers can be added */
4457 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4458 return -EINVAL;
4459 /* Can only add if TDLS ... */
4460 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4461 return -EOPNOTSUPP;
4462 /* ... with external setup is supported */
4463 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4464 return -EOPNOTSUPP;
4465 /*
4466 * Older wpa_supplicant versions always mark the TDLS peer
4467 * as authorized, but it shouldn't yet be.
4468 */
4469 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4470 break;
4471 default:
4472 return -EOPNOTSUPP;
4473 }
4474
4475 /* be aware of params.vlan when changing code here */
4476
4477 err = rdev_add_station(rdev, dev, mac_addr, &params);
4478
4479 if (params.vlan)
4480 dev_put(params.vlan);
4481 return err;
4482 }
4483
4484 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4485 {
4486 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4487 struct net_device *dev = info->user_ptr[1];
4488 struct station_del_parameters params;
4489
4490 memset(&params, 0, sizeof(params));
4491
4492 if (info->attrs[NL80211_ATTR_MAC])
4493 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4494
4495 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4496 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4497 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4498 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4499 return -EINVAL;
4500
4501 if (!rdev->ops->del_station)
4502 return -EOPNOTSUPP;
4503
4504 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4505 params.subtype =
4506 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4507 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4508 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4509 return -EINVAL;
4510 } else {
4511 /* Default to Deauthentication frame */
4512 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4513 }
4514
4515 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4516 params.reason_code =
4517 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4518 if (params.reason_code == 0)
4519 return -EINVAL; /* 0 is reserved */
4520 } else {
4521 /* Default to reason code 2 */
4522 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4523 }
4524
4525 return rdev_del_station(rdev, dev, &params);
4526 }
4527
4528 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4529 int flags, struct net_device *dev,
4530 u8 *dst, u8 *next_hop,
4531 struct mpath_info *pinfo)
4532 {
4533 void *hdr;
4534 struct nlattr *pinfoattr;
4535
4536 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4537 if (!hdr)
4538 return -1;
4539
4540 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4541 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4542 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4543 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4544 goto nla_put_failure;
4545
4546 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4547 if (!pinfoattr)
4548 goto nla_put_failure;
4549 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4550 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4551 pinfo->frame_qlen))
4552 goto nla_put_failure;
4553 if (((pinfo->filled & MPATH_INFO_SN) &&
4554 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4555 ((pinfo->filled & MPATH_INFO_METRIC) &&
4556 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4557 pinfo->metric)) ||
4558 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4559 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4560 pinfo->exptime)) ||
4561 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4562 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4563 pinfo->flags)) ||
4564 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4565 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4566 pinfo->discovery_timeout)) ||
4567 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4568 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4569 pinfo->discovery_retries)))
4570 goto nla_put_failure;
4571
4572 nla_nest_end(msg, pinfoattr);
4573
4574 genlmsg_end(msg, hdr);
4575 return 0;
4576
4577 nla_put_failure:
4578 genlmsg_cancel(msg, hdr);
4579 return -EMSGSIZE;
4580 }
4581
4582 static int nl80211_dump_mpath(struct sk_buff *skb,
4583 struct netlink_callback *cb)
4584 {
4585 struct mpath_info pinfo;
4586 struct cfg80211_registered_device *rdev;
4587 struct wireless_dev *wdev;
4588 u8 dst[ETH_ALEN];
4589 u8 next_hop[ETH_ALEN];
4590 int path_idx = cb->args[2];
4591 int err;
4592
4593 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4594 if (err)
4595 return err;
4596
4597 if (!rdev->ops->dump_mpath) {
4598 err = -EOPNOTSUPP;
4599 goto out_err;
4600 }
4601
4602 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4603 err = -EOPNOTSUPP;
4604 goto out_err;
4605 }
4606
4607 while (1) {
4608 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4609 next_hop, &pinfo);
4610 if (err == -ENOENT)
4611 break;
4612 if (err)
4613 goto out_err;
4614
4615 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4616 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4617 wdev->netdev, dst, next_hop,
4618 &pinfo) < 0)
4619 goto out;
4620
4621 path_idx++;
4622 }
4623
4624
4625 out:
4626 cb->args[2] = path_idx;
4627 err = skb->len;
4628 out_err:
4629 nl80211_finish_wdev_dump(rdev);
4630 return err;
4631 }
4632
4633 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4634 {
4635 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636 int err;
4637 struct net_device *dev = info->user_ptr[1];
4638 struct mpath_info pinfo;
4639 struct sk_buff *msg;
4640 u8 *dst = NULL;
4641 u8 next_hop[ETH_ALEN];
4642
4643 memset(&pinfo, 0, sizeof(pinfo));
4644
4645 if (!info->attrs[NL80211_ATTR_MAC])
4646 return -EINVAL;
4647
4648 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4649
4650 if (!rdev->ops->get_mpath)
4651 return -EOPNOTSUPP;
4652
4653 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4654 return -EOPNOTSUPP;
4655
4656 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4657 if (err)
4658 return err;
4659
4660 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4661 if (!msg)
4662 return -ENOMEM;
4663
4664 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4665 dev, dst, next_hop, &pinfo) < 0) {
4666 nlmsg_free(msg);
4667 return -ENOBUFS;
4668 }
4669
4670 return genlmsg_reply(msg, info);
4671 }
4672
4673 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4674 {
4675 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4676 struct net_device *dev = info->user_ptr[1];
4677 u8 *dst = NULL;
4678 u8 *next_hop = NULL;
4679
4680 if (!info->attrs[NL80211_ATTR_MAC])
4681 return -EINVAL;
4682
4683 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4684 return -EINVAL;
4685
4686 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4687 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4688
4689 if (!rdev->ops->change_mpath)
4690 return -EOPNOTSUPP;
4691
4692 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4693 return -EOPNOTSUPP;
4694
4695 return rdev_change_mpath(rdev, dev, dst, next_hop);
4696 }
4697
4698 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4699 {
4700 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4701 struct net_device *dev = info->user_ptr[1];
4702 u8 *dst = NULL;
4703 u8 *next_hop = NULL;
4704
4705 if (!info->attrs[NL80211_ATTR_MAC])
4706 return -EINVAL;
4707
4708 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4709 return -EINVAL;
4710
4711 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4712 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4713
4714 if (!rdev->ops->add_mpath)
4715 return -EOPNOTSUPP;
4716
4717 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4718 return -EOPNOTSUPP;
4719
4720 return rdev_add_mpath(rdev, dev, dst, next_hop);
4721 }
4722
4723 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4724 {
4725 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4726 struct net_device *dev = info->user_ptr[1];
4727 u8 *dst = NULL;
4728
4729 if (info->attrs[NL80211_ATTR_MAC])
4730 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4731
4732 if (!rdev->ops->del_mpath)
4733 return -EOPNOTSUPP;
4734
4735 return rdev_del_mpath(rdev, dev, dst);
4736 }
4737
4738 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4739 {
4740 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4741 int err;
4742 struct net_device *dev = info->user_ptr[1];
4743 struct mpath_info pinfo;
4744 struct sk_buff *msg;
4745 u8 *dst = NULL;
4746 u8 mpp[ETH_ALEN];
4747
4748 memset(&pinfo, 0, sizeof(pinfo));
4749
4750 if (!info->attrs[NL80211_ATTR_MAC])
4751 return -EINVAL;
4752
4753 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4754
4755 if (!rdev->ops->get_mpp)
4756 return -EOPNOTSUPP;
4757
4758 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4759 return -EOPNOTSUPP;
4760
4761 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4762 if (err)
4763 return err;
4764
4765 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4766 if (!msg)
4767 return -ENOMEM;
4768
4769 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4770 dev, dst, mpp, &pinfo) < 0) {
4771 nlmsg_free(msg);
4772 return -ENOBUFS;
4773 }
4774
4775 return genlmsg_reply(msg, info);
4776 }
4777
4778 static int nl80211_dump_mpp(struct sk_buff *skb,
4779 struct netlink_callback *cb)
4780 {
4781 struct mpath_info pinfo;
4782 struct cfg80211_registered_device *rdev;
4783 struct wireless_dev *wdev;
4784 u8 dst[ETH_ALEN];
4785 u8 mpp[ETH_ALEN];
4786 int path_idx = cb->args[2];
4787 int err;
4788
4789 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4790 if (err)
4791 return err;
4792
4793 if (!rdev->ops->dump_mpp) {
4794 err = -EOPNOTSUPP;
4795 goto out_err;
4796 }
4797
4798 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4799 err = -EOPNOTSUPP;
4800 goto out_err;
4801 }
4802
4803 while (1) {
4804 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4805 mpp, &pinfo);
4806 if (err == -ENOENT)
4807 break;
4808 if (err)
4809 goto out_err;
4810
4811 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4812 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4813 wdev->netdev, dst, mpp,
4814 &pinfo) < 0)
4815 goto out;
4816
4817 path_idx++;
4818 }
4819
4820 out:
4821 cb->args[2] = path_idx;
4822 err = skb->len;
4823 out_err:
4824 nl80211_finish_wdev_dump(rdev);
4825 return err;
4826 }
4827
4828 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4829 {
4830 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4831 struct net_device *dev = info->user_ptr[1];
4832 struct wireless_dev *wdev = dev->ieee80211_ptr;
4833 struct bss_parameters params;
4834 int err;
4835
4836 memset(&params, 0, sizeof(params));
4837 /* default to not changing parameters */
4838 params.use_cts_prot = -1;
4839 params.use_short_preamble = -1;
4840 params.use_short_slot_time = -1;
4841 params.ap_isolate = -1;
4842 params.ht_opmode = -1;
4843 params.p2p_ctwindow = -1;
4844 params.p2p_opp_ps = -1;
4845
4846 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4847 params.use_cts_prot =
4848 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4849 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4850 params.use_short_preamble =
4851 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4852 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4853 params.use_short_slot_time =
4854 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4855 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4856 params.basic_rates =
4857 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4858 params.basic_rates_len =
4859 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4860 }
4861 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4862 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4863 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4864 params.ht_opmode =
4865 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4866
4867 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4868 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4869 return -EINVAL;
4870 params.p2p_ctwindow =
4871 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4872 if (params.p2p_ctwindow < 0)
4873 return -EINVAL;
4874 if (params.p2p_ctwindow != 0 &&
4875 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4876 return -EINVAL;
4877 }
4878
4879 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4880 u8 tmp;
4881
4882 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4883 return -EINVAL;
4884 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4885 if (tmp > 1)
4886 return -EINVAL;
4887 params.p2p_opp_ps = tmp;
4888 if (params.p2p_opp_ps &&
4889 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4890 return -EINVAL;
4891 }
4892
4893 if (!rdev->ops->change_bss)
4894 return -EOPNOTSUPP;
4895
4896 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4897 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4898 return -EOPNOTSUPP;
4899
4900 wdev_lock(wdev);
4901 err = rdev_change_bss(rdev, dev, &params);
4902 wdev_unlock(wdev);
4903
4904 return err;
4905 }
4906
4907 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4908 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4909 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4910 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4911 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4912 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4913 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4914 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4915 };
4916
4917 static int parse_reg_rule(struct nlattr *tb[],
4918 struct ieee80211_reg_rule *reg_rule)
4919 {
4920 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4921 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4922
4923 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4924 return -EINVAL;
4925 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4926 return -EINVAL;
4927 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4928 return -EINVAL;
4929 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4930 return -EINVAL;
4931 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4932 return -EINVAL;
4933
4934 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4935
4936 freq_range->start_freq_khz =
4937 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4938 freq_range->end_freq_khz =
4939 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4940 freq_range->max_bandwidth_khz =
4941 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4942
4943 power_rule->max_eirp =
4944 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4945
4946 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4947 power_rule->max_antenna_gain =
4948 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4949
4950 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4951 reg_rule->dfs_cac_ms =
4952 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4953
4954 return 0;
4955 }
4956
4957 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4958 {
4959 char *data = NULL;
4960 enum nl80211_user_reg_hint_type user_reg_hint_type;
4961
4962 /*
4963 * You should only get this when cfg80211 hasn't yet initialized
4964 * completely when built-in to the kernel right between the time
4965 * window between nl80211_init() and regulatory_init(), if that is
4966 * even possible.
4967 */
4968 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4969 return -EINPROGRESS;
4970
4971 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4972 user_reg_hint_type =
4973 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4974 else
4975 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4976
4977 switch (user_reg_hint_type) {
4978 case NL80211_USER_REG_HINT_USER:
4979 case NL80211_USER_REG_HINT_CELL_BASE:
4980 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4981 return -EINVAL;
4982
4983 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4984 return regulatory_hint_user(data, user_reg_hint_type);
4985 case NL80211_USER_REG_HINT_INDOOR:
4986 return regulatory_hint_indoor_user();
4987 default:
4988 return -EINVAL;
4989 }
4990 }
4991
4992 static int nl80211_get_mesh_config(struct sk_buff *skb,
4993 struct genl_info *info)
4994 {
4995 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4996 struct net_device *dev = info->user_ptr[1];
4997 struct wireless_dev *wdev = dev->ieee80211_ptr;
4998 struct mesh_config cur_params;
4999 int err = 0;
5000 void *hdr;
5001 struct nlattr *pinfoattr;
5002 struct sk_buff *msg;
5003
5004 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5005 return -EOPNOTSUPP;
5006
5007 if (!rdev->ops->get_mesh_config)
5008 return -EOPNOTSUPP;
5009
5010 wdev_lock(wdev);
5011 /* If not connected, get default parameters */
5012 if (!wdev->mesh_id_len)
5013 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5014 else
5015 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5016 wdev_unlock(wdev);
5017
5018 if (err)
5019 return err;
5020
5021 /* Draw up a netlink message to send back */
5022 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5023 if (!msg)
5024 return -ENOMEM;
5025 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5026 NL80211_CMD_GET_MESH_CONFIG);
5027 if (!hdr)
5028 goto out;
5029 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5030 if (!pinfoattr)
5031 goto nla_put_failure;
5032 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5033 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5034 cur_params.dot11MeshRetryTimeout) ||
5035 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5036 cur_params.dot11MeshConfirmTimeout) ||
5037 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5038 cur_params.dot11MeshHoldingTimeout) ||
5039 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5040 cur_params.dot11MeshMaxPeerLinks) ||
5041 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5042 cur_params.dot11MeshMaxRetries) ||
5043 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5044 cur_params.dot11MeshTTL) ||
5045 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5046 cur_params.element_ttl) ||
5047 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5048 cur_params.auto_open_plinks) ||
5049 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5050 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5051 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5052 cur_params.dot11MeshHWMPmaxPREQretries) ||
5053 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5054 cur_params.path_refresh_time) ||
5055 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5056 cur_params.min_discovery_timeout) ||
5057 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5058 cur_params.dot11MeshHWMPactivePathTimeout) ||
5059 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5060 cur_params.dot11MeshHWMPpreqMinInterval) ||
5061 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5062 cur_params.dot11MeshHWMPperrMinInterval) ||
5063 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5064 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5065 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5066 cur_params.dot11MeshHWMPRootMode) ||
5067 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5068 cur_params.dot11MeshHWMPRannInterval) ||
5069 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5070 cur_params.dot11MeshGateAnnouncementProtocol) ||
5071 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5072 cur_params.dot11MeshForwarding) ||
5073 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5074 cur_params.rssi_threshold) ||
5075 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5076 cur_params.ht_opmode) ||
5077 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5078 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5079 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5080 cur_params.dot11MeshHWMProotInterval) ||
5081 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5082 cur_params.dot11MeshHWMPconfirmationInterval) ||
5083 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5084 cur_params.power_mode) ||
5085 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5086 cur_params.dot11MeshAwakeWindowDuration) ||
5087 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5088 cur_params.plink_timeout))
5089 goto nla_put_failure;
5090 nla_nest_end(msg, pinfoattr);
5091 genlmsg_end(msg, hdr);
5092 return genlmsg_reply(msg, info);
5093
5094 nla_put_failure:
5095 genlmsg_cancel(msg, hdr);
5096 out:
5097 nlmsg_free(msg);
5098 return -ENOBUFS;
5099 }
5100
5101 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5102 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5103 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5104 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5105 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5106 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5107 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5108 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5109 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5110 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5111 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5112 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5113 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5114 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5115 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5116 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5117 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5118 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5119 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5120 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5121 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5122 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5123 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5124 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5125 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5126 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5127 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5128 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5129 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5130 };
5131
5132 static const struct nla_policy
5133 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5134 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5135 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5136 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5137 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5138 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5139 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5140 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5141 .len = IEEE80211_MAX_DATA_LEN },
5142 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5143 };
5144
5145 static int nl80211_parse_mesh_config(struct genl_info *info,
5146 struct mesh_config *cfg,
5147 u32 *mask_out)
5148 {
5149 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5150 u32 mask = 0;
5151
5152 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5153 do { \
5154 if (tb[attr]) { \
5155 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5156 return -EINVAL; \
5157 cfg->param = fn(tb[attr]); \
5158 mask |= (1 << (attr - 1)); \
5159 } \
5160 } while (0)
5161
5162
5163 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5164 return -EINVAL;
5165 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5166 info->attrs[NL80211_ATTR_MESH_CONFIG],
5167 nl80211_meshconf_params_policy))
5168 return -EINVAL;
5169
5170 /* This makes sure that there aren't more than 32 mesh config
5171 * parameters (otherwise our bitfield scheme would not work.) */
5172 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5173
5174 /* Fill in the params struct */
5175 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5176 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5177 nla_get_u16);
5178 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5179 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5180 nla_get_u16);
5181 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5182 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5183 nla_get_u16);
5184 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5185 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5186 nla_get_u16);
5187 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5188 mask, NL80211_MESHCONF_MAX_RETRIES,
5189 nla_get_u8);
5190 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5191 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5192 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5193 mask, NL80211_MESHCONF_ELEMENT_TTL,
5194 nla_get_u8);
5195 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5196 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5197 nla_get_u8);
5198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5199 1, 255, mask,
5200 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5201 nla_get_u32);
5202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5203 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5204 nla_get_u8);
5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5206 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5207 nla_get_u32);
5208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5209 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5210 nla_get_u16);
5211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5212 1, 65535, mask,
5213 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5214 nla_get_u32);
5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5216 1, 65535, mask,
5217 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5218 nla_get_u16);
5219 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5220 1, 65535, mask,
5221 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5222 nla_get_u16);
5223 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5224 dot11MeshHWMPnetDiameterTraversalTime,
5225 1, 65535, mask,
5226 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5227 nla_get_u16);
5228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5229 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5230 nla_get_u8);
5231 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5232 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5233 nla_get_u16);
5234 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5235 dot11MeshGateAnnouncementProtocol, 0, 1,
5236 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5237 nla_get_u8);
5238 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5239 mask, NL80211_MESHCONF_FORWARDING,
5240 nla_get_u8);
5241 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5242 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5243 nla_get_s32);
5244 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5245 mask, NL80211_MESHCONF_HT_OPMODE,
5246 nla_get_u16);
5247 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5248 1, 65535, mask,
5249 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5250 nla_get_u32);
5251 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5252 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5253 nla_get_u16);
5254 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5255 dot11MeshHWMPconfirmationInterval,
5256 1, 65535, mask,
5257 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5258 nla_get_u16);
5259 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5260 NL80211_MESH_POWER_ACTIVE,
5261 NL80211_MESH_POWER_MAX,
5262 mask, NL80211_MESHCONF_POWER_MODE,
5263 nla_get_u32);
5264 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5265 0, 65535, mask,
5266 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5267 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5268 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5269 nla_get_u32);
5270 if (mask_out)
5271 *mask_out = mask;
5272
5273 return 0;
5274
5275 #undef FILL_IN_MESH_PARAM_IF_SET
5276 }
5277
5278 static int nl80211_parse_mesh_setup(struct genl_info *info,
5279 struct mesh_setup *setup)
5280 {
5281 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5282 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5283
5284 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5285 return -EINVAL;
5286 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5287 info->attrs[NL80211_ATTR_MESH_SETUP],
5288 nl80211_mesh_setup_params_policy))
5289 return -EINVAL;
5290
5291 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5292 setup->sync_method =
5293 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5294 IEEE80211_SYNC_METHOD_VENDOR :
5295 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5296
5297 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5298 setup->path_sel_proto =
5299 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5300 IEEE80211_PATH_PROTOCOL_VENDOR :
5301 IEEE80211_PATH_PROTOCOL_HWMP;
5302
5303 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5304 setup->path_metric =
5305 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5306 IEEE80211_PATH_METRIC_VENDOR :
5307 IEEE80211_PATH_METRIC_AIRTIME;
5308
5309
5310 if (tb[NL80211_MESH_SETUP_IE]) {
5311 struct nlattr *ieattr =
5312 tb[NL80211_MESH_SETUP_IE];
5313 if (!is_valid_ie_attr(ieattr))
5314 return -EINVAL;
5315 setup->ie = nla_data(ieattr);
5316 setup->ie_len = nla_len(ieattr);
5317 }
5318 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5319 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5320 return -EINVAL;
5321 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5322 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5323 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5324 if (setup->is_secure)
5325 setup->user_mpm = true;
5326
5327 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5328 if (!setup->user_mpm)
5329 return -EINVAL;
5330 setup->auth_id =
5331 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5332 }
5333
5334 return 0;
5335 }
5336
5337 static int nl80211_update_mesh_config(struct sk_buff *skb,
5338 struct genl_info *info)
5339 {
5340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5341 struct net_device *dev = info->user_ptr[1];
5342 struct wireless_dev *wdev = dev->ieee80211_ptr;
5343 struct mesh_config cfg;
5344 u32 mask;
5345 int err;
5346
5347 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5348 return -EOPNOTSUPP;
5349
5350 if (!rdev->ops->update_mesh_config)
5351 return -EOPNOTSUPP;
5352
5353 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5354 if (err)
5355 return err;
5356
5357 wdev_lock(wdev);
5358 if (!wdev->mesh_id_len)
5359 err = -ENOLINK;
5360
5361 if (!err)
5362 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5363
5364 wdev_unlock(wdev);
5365
5366 return err;
5367 }
5368
5369 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5370 struct sk_buff *msg)
5371 {
5372 struct nlattr *nl_reg_rules;
5373 unsigned int i;
5374
5375 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5376 (regdom->dfs_region &&
5377 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5378 goto nla_put_failure;
5379
5380 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5381 if (!nl_reg_rules)
5382 goto nla_put_failure;
5383
5384 for (i = 0; i < regdom->n_reg_rules; i++) {
5385 struct nlattr *nl_reg_rule;
5386 const struct ieee80211_reg_rule *reg_rule;
5387 const struct ieee80211_freq_range *freq_range;
5388 const struct ieee80211_power_rule *power_rule;
5389 unsigned int max_bandwidth_khz;
5390
5391 reg_rule = &regdom->reg_rules[i];
5392 freq_range = &reg_rule->freq_range;
5393 power_rule = &reg_rule->power_rule;
5394
5395 nl_reg_rule = nla_nest_start(msg, i);
5396 if (!nl_reg_rule)
5397 goto nla_put_failure;
5398
5399 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5400 if (!max_bandwidth_khz)
5401 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5402 reg_rule);
5403
5404 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5405 reg_rule->flags) ||
5406 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5407 freq_range->start_freq_khz) ||
5408 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5409 freq_range->end_freq_khz) ||
5410 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5411 max_bandwidth_khz) ||
5412 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5413 power_rule->max_antenna_gain) ||
5414 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5415 power_rule->max_eirp) ||
5416 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5417 reg_rule->dfs_cac_ms))
5418 goto nla_put_failure;
5419
5420 nla_nest_end(msg, nl_reg_rule);
5421 }
5422
5423 nla_nest_end(msg, nl_reg_rules);
5424 return 0;
5425
5426 nla_put_failure:
5427 return -EMSGSIZE;
5428 }
5429
5430 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5431 {
5432 const struct ieee80211_regdomain *regdom = NULL;
5433 struct cfg80211_registered_device *rdev;
5434 struct wiphy *wiphy = NULL;
5435 struct sk_buff *msg;
5436 void *hdr;
5437
5438 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5439 if (!msg)
5440 return -ENOBUFS;
5441
5442 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5443 NL80211_CMD_GET_REG);
5444 if (!hdr)
5445 goto put_failure;
5446
5447 if (info->attrs[NL80211_ATTR_WIPHY]) {
5448 bool self_managed;
5449
5450 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5451 if (IS_ERR(rdev)) {
5452 nlmsg_free(msg);
5453 return PTR_ERR(rdev);
5454 }
5455
5456 wiphy = &rdev->wiphy;
5457 self_managed = wiphy->regulatory_flags &
5458 REGULATORY_WIPHY_SELF_MANAGED;
5459 regdom = get_wiphy_regdom(wiphy);
5460
5461 /* a self-managed-reg device must have a private regdom */
5462 if (WARN_ON(!regdom && self_managed)) {
5463 nlmsg_free(msg);
5464 return -EINVAL;
5465 }
5466
5467 if (regdom &&
5468 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5469 goto nla_put_failure;
5470 }
5471
5472 if (!wiphy && reg_last_request_cell_base() &&
5473 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5474 NL80211_USER_REG_HINT_CELL_BASE))
5475 goto nla_put_failure;
5476
5477 rcu_read_lock();
5478
5479 if (!regdom)
5480 regdom = rcu_dereference(cfg80211_regdomain);
5481
5482 if (nl80211_put_regdom(regdom, msg))
5483 goto nla_put_failure_rcu;
5484
5485 rcu_read_unlock();
5486
5487 genlmsg_end(msg, hdr);
5488 return genlmsg_reply(msg, info);
5489
5490 nla_put_failure_rcu:
5491 rcu_read_unlock();
5492 nla_put_failure:
5493 genlmsg_cancel(msg, hdr);
5494 put_failure:
5495 nlmsg_free(msg);
5496 return -EMSGSIZE;
5497 }
5498
5499 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5500 u32 seq, int flags, struct wiphy *wiphy,
5501 const struct ieee80211_regdomain *regdom)
5502 {
5503 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5504 NL80211_CMD_GET_REG);
5505
5506 if (!hdr)
5507 return -1;
5508
5509 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5510
5511 if (nl80211_put_regdom(regdom, msg))
5512 goto nla_put_failure;
5513
5514 if (!wiphy && reg_last_request_cell_base() &&
5515 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5516 NL80211_USER_REG_HINT_CELL_BASE))
5517 goto nla_put_failure;
5518
5519 if (wiphy &&
5520 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5521 goto nla_put_failure;
5522
5523 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5524 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5525 goto nla_put_failure;
5526
5527 genlmsg_end(msg, hdr);
5528 return 0;
5529
5530 nla_put_failure:
5531 genlmsg_cancel(msg, hdr);
5532 return -EMSGSIZE;
5533 }
5534
5535 static int nl80211_get_reg_dump(struct sk_buff *skb,
5536 struct netlink_callback *cb)
5537 {
5538 const struct ieee80211_regdomain *regdom = NULL;
5539 struct cfg80211_registered_device *rdev;
5540 int err, reg_idx, start = cb->args[2];
5541
5542 rtnl_lock();
5543
5544 if (cfg80211_regdomain && start == 0) {
5545 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5546 NLM_F_MULTI, NULL,
5547 rtnl_dereference(cfg80211_regdomain));
5548 if (err < 0)
5549 goto out_err;
5550 }
5551
5552 /* the global regdom is idx 0 */
5553 reg_idx = 1;
5554 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5555 regdom = get_wiphy_regdom(&rdev->wiphy);
5556 if (!regdom)
5557 continue;
5558
5559 if (++reg_idx <= start)
5560 continue;
5561
5562 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5563 NLM_F_MULTI, &rdev->wiphy, regdom);
5564 if (err < 0) {
5565 reg_idx--;
5566 break;
5567 }
5568 }
5569
5570 cb->args[2] = reg_idx;
5571 err = skb->len;
5572 out_err:
5573 rtnl_unlock();
5574 return err;
5575 }
5576
5577 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5578 {
5579 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5580 struct nlattr *nl_reg_rule;
5581 char *alpha2;
5582 int rem_reg_rules, r;
5583 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5584 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5585 struct ieee80211_regdomain *rd;
5586
5587 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5588 return -EINVAL;
5589
5590 if (!info->attrs[NL80211_ATTR_REG_RULES])
5591 return -EINVAL;
5592
5593 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5594
5595 if (info->attrs[NL80211_ATTR_DFS_REGION])
5596 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5597
5598 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5599 rem_reg_rules) {
5600 num_rules++;
5601 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5602 return -EINVAL;
5603 }
5604
5605 if (!reg_is_valid_request(alpha2))
5606 return -EINVAL;
5607
5608 size_of_regd = sizeof(struct ieee80211_regdomain) +
5609 num_rules * sizeof(struct ieee80211_reg_rule);
5610
5611 rd = kzalloc(size_of_regd, GFP_KERNEL);
5612 if (!rd)
5613 return -ENOMEM;
5614
5615 rd->n_reg_rules = num_rules;
5616 rd->alpha2[0] = alpha2[0];
5617 rd->alpha2[1] = alpha2[1];
5618
5619 /*
5620 * Disable DFS master mode if the DFS region was
5621 * not supported or known on this kernel.
5622 */
5623 if (reg_supported_dfs_region(dfs_region))
5624 rd->dfs_region = dfs_region;
5625
5626 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5627 rem_reg_rules) {
5628 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5629 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5630 reg_rule_policy);
5631 if (r)
5632 goto bad_reg;
5633 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5634 if (r)
5635 goto bad_reg;
5636
5637 rule_idx++;
5638
5639 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5640 r = -EINVAL;
5641 goto bad_reg;
5642 }
5643 }
5644
5645 r = set_regdom(rd);
5646 /* set_regdom took ownership */
5647 rd = NULL;
5648
5649 bad_reg:
5650 kfree(rd);
5651 return r;
5652 }
5653
5654 static int validate_scan_freqs(struct nlattr *freqs)
5655 {
5656 struct nlattr *attr1, *attr2;
5657 int n_channels = 0, tmp1, tmp2;
5658
5659 nla_for_each_nested(attr1, freqs, tmp1) {
5660 n_channels++;
5661 /*
5662 * Some hardware has a limited channel list for
5663 * scanning, and it is pretty much nonsensical
5664 * to scan for a channel twice, so disallow that
5665 * and don't require drivers to check that the
5666 * channel list they get isn't longer than what
5667 * they can scan, as long as they can scan all
5668 * the channels they registered at once.
5669 */
5670 nla_for_each_nested(attr2, freqs, tmp2)
5671 if (attr1 != attr2 &&
5672 nla_get_u32(attr1) == nla_get_u32(attr2))
5673 return 0;
5674 }
5675
5676 return n_channels;
5677 }
5678
5679 static int nl80211_parse_random_mac(struct nlattr **attrs,
5680 u8 *mac_addr, u8 *mac_addr_mask)
5681 {
5682 int i;
5683
5684 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5685 memset(mac_addr, 0, ETH_ALEN);
5686 memset(mac_addr_mask, 0, ETH_ALEN);
5687 mac_addr[0] = 0x2;
5688 mac_addr_mask[0] = 0x3;
5689
5690 return 0;
5691 }
5692
5693 /* need both or none */
5694 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5695 return -EINVAL;
5696
5697 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5698 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5699
5700 /* don't allow or configure an mcast address */
5701 if (!is_multicast_ether_addr(mac_addr_mask) ||
5702 is_multicast_ether_addr(mac_addr))
5703 return -EINVAL;
5704
5705 /*
5706 * allow users to pass a MAC address that has bits set outside
5707 * of the mask, but don't bother drivers with having to deal
5708 * with such bits
5709 */
5710 for (i = 0; i < ETH_ALEN; i++)
5711 mac_addr[i] &= mac_addr_mask[i];
5712
5713 return 0;
5714 }
5715
5716 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5717 {
5718 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5719 struct wireless_dev *wdev = info->user_ptr[1];
5720 struct cfg80211_scan_request *request;
5721 struct nlattr *attr;
5722 struct wiphy *wiphy;
5723 int err, tmp, n_ssids = 0, n_channels, i;
5724 size_t ie_len;
5725
5726 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5727 return -EINVAL;
5728
5729 wiphy = &rdev->wiphy;
5730
5731 if (!rdev->ops->scan)
5732 return -EOPNOTSUPP;
5733
5734 if (rdev->scan_req || rdev->scan_msg) {
5735 err = -EBUSY;
5736 goto unlock;
5737 }
5738
5739 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5740 n_channels = validate_scan_freqs(
5741 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5742 if (!n_channels) {
5743 err = -EINVAL;
5744 goto unlock;
5745 }
5746 } else {
5747 n_channels = ieee80211_get_num_supported_channels(wiphy);
5748 }
5749
5750 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5751 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5752 n_ssids++;
5753
5754 if (n_ssids > wiphy->max_scan_ssids) {
5755 err = -EINVAL;
5756 goto unlock;
5757 }
5758
5759 if (info->attrs[NL80211_ATTR_IE])
5760 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5761 else
5762 ie_len = 0;
5763
5764 if (ie_len > wiphy->max_scan_ie_len) {
5765 err = -EINVAL;
5766 goto unlock;
5767 }
5768
5769 request = kzalloc(sizeof(*request)
5770 + sizeof(*request->ssids) * n_ssids
5771 + sizeof(*request->channels) * n_channels
5772 + ie_len, GFP_KERNEL);
5773 if (!request) {
5774 err = -ENOMEM;
5775 goto unlock;
5776 }
5777
5778 if (n_ssids)
5779 request->ssids = (void *)&request->channels[n_channels];
5780 request->n_ssids = n_ssids;
5781 if (ie_len) {
5782 if (request->ssids)
5783 request->ie = (void *)(request->ssids + n_ssids);
5784 else
5785 request->ie = (void *)(request->channels + n_channels);
5786 }
5787
5788 i = 0;
5789 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5790 /* user specified, bail out if channel not found */
5791 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5792 struct ieee80211_channel *chan;
5793
5794 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5795
5796 if (!chan) {
5797 err = -EINVAL;
5798 goto out_free;
5799 }
5800
5801 /* ignore disabled channels */
5802 if (chan->flags & IEEE80211_CHAN_DISABLED)
5803 continue;
5804
5805 request->channels[i] = chan;
5806 i++;
5807 }
5808 } else {
5809 enum ieee80211_band band;
5810
5811 /* all channels */
5812 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5813 int j;
5814 if (!wiphy->bands[band])
5815 continue;
5816 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5817 struct ieee80211_channel *chan;
5818
5819 chan = &wiphy->bands[band]->channels[j];
5820
5821 if (chan->flags & IEEE80211_CHAN_DISABLED)
5822 continue;
5823
5824 request->channels[i] = chan;
5825 i++;
5826 }
5827 }
5828 }
5829
5830 if (!i) {
5831 err = -EINVAL;
5832 goto out_free;
5833 }
5834
5835 request->n_channels = i;
5836
5837 i = 0;
5838 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5839 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5840 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5841 err = -EINVAL;
5842 goto out_free;
5843 }
5844 request->ssids[i].ssid_len = nla_len(attr);
5845 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5846 i++;
5847 }
5848 }
5849
5850 if (info->attrs[NL80211_ATTR_IE]) {
5851 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5852 memcpy((void *)request->ie,
5853 nla_data(info->attrs[NL80211_ATTR_IE]),
5854 request->ie_len);
5855 }
5856
5857 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5858 if (wiphy->bands[i])
5859 request->rates[i] =
5860 (1 << wiphy->bands[i]->n_bitrates) - 1;
5861
5862 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5863 nla_for_each_nested(attr,
5864 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5865 tmp) {
5866 enum ieee80211_band band = nla_type(attr);
5867
5868 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5869 err = -EINVAL;
5870 goto out_free;
5871 }
5872
5873 if (!wiphy->bands[band])
5874 continue;
5875
5876 err = ieee80211_get_ratemask(wiphy->bands[band],
5877 nla_data(attr),
5878 nla_len(attr),
5879 &request->rates[band]);
5880 if (err)
5881 goto out_free;
5882 }
5883 }
5884
5885 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5886 request->flags = nla_get_u32(
5887 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5888 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5889 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5890 err = -EOPNOTSUPP;
5891 goto out_free;
5892 }
5893
5894 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5895 if (!(wiphy->features &
5896 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5897 err = -EOPNOTSUPP;
5898 goto out_free;
5899 }
5900
5901 if (wdev->current_bss) {
5902 err = -EOPNOTSUPP;
5903 goto out_free;
5904 }
5905
5906 err = nl80211_parse_random_mac(info->attrs,
5907 request->mac_addr,
5908 request->mac_addr_mask);
5909 if (err)
5910 goto out_free;
5911 }
5912 }
5913
5914 request->no_cck =
5915 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5916
5917 request->wdev = wdev;
5918 request->wiphy = &rdev->wiphy;
5919 request->scan_start = jiffies;
5920
5921 rdev->scan_req = request;
5922 err = rdev_scan(rdev, request);
5923
5924 if (!err) {
5925 nl80211_send_scan_start(rdev, wdev);
5926 if (wdev->netdev)
5927 dev_hold(wdev->netdev);
5928 } else {
5929 out_free:
5930 rdev->scan_req = NULL;
5931 kfree(request);
5932 }
5933
5934 unlock:
5935 return err;
5936 }
5937
5938 static struct cfg80211_sched_scan_request *
5939 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5940 struct nlattr **attrs)
5941 {
5942 struct cfg80211_sched_scan_request *request;
5943 struct nlattr *attr;
5944 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5945 u32 interval;
5946 enum ieee80211_band band;
5947 size_t ie_len;
5948 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5949 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5950
5951 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5952 return ERR_PTR(-EINVAL);
5953
5954 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5955 return ERR_PTR(-EINVAL);
5956
5957 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5958 if (interval == 0)
5959 return ERR_PTR(-EINVAL);
5960
5961 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5962 n_channels = validate_scan_freqs(
5963 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5964 if (!n_channels)
5965 return ERR_PTR(-EINVAL);
5966 } else {
5967 n_channels = ieee80211_get_num_supported_channels(wiphy);
5968 }
5969
5970 if (attrs[NL80211_ATTR_SCAN_SSIDS])
5971 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5972 tmp)
5973 n_ssids++;
5974
5975 if (n_ssids > wiphy->max_sched_scan_ssids)
5976 return ERR_PTR(-EINVAL);
5977
5978 /*
5979 * First, count the number of 'real' matchsets. Due to an issue with
5980 * the old implementation, matchsets containing only the RSSI attribute
5981 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5982 * RSSI for all matchsets, rather than their own matchset for reporting
5983 * all APs with a strong RSSI. This is needed to be compatible with
5984 * older userspace that treated a matchset with only the RSSI as the
5985 * global RSSI for all other matchsets - if there are other matchsets.
5986 */
5987 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5988 nla_for_each_nested(attr,
5989 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5990 tmp) {
5991 struct nlattr *rssi;
5992
5993 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5994 nla_data(attr), nla_len(attr),
5995 nl80211_match_policy);
5996 if (err)
5997 return ERR_PTR(err);
5998 /* add other standalone attributes here */
5999 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6000 n_match_sets++;
6001 continue;
6002 }
6003 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6004 if (rssi)
6005 default_match_rssi = nla_get_s32(rssi);
6006 }
6007 }
6008
6009 /* However, if there's no other matchset, add the RSSI one */
6010 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6011 n_match_sets = 1;
6012
6013 if (n_match_sets > wiphy->max_match_sets)
6014 return ERR_PTR(-EINVAL);
6015
6016 if (attrs[NL80211_ATTR_IE])
6017 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6018 else
6019 ie_len = 0;
6020
6021 if (ie_len > wiphy->max_sched_scan_ie_len)
6022 return ERR_PTR(-EINVAL);
6023
6024 request = kzalloc(sizeof(*request)
6025 + sizeof(*request->ssids) * n_ssids
6026 + sizeof(*request->match_sets) * n_match_sets
6027 + sizeof(*request->channels) * n_channels
6028 + ie_len, GFP_KERNEL);
6029 if (!request)
6030 return ERR_PTR(-ENOMEM);
6031
6032 if (n_ssids)
6033 request->ssids = (void *)&request->channels[n_channels];
6034 request->n_ssids = n_ssids;
6035 if (ie_len) {
6036 if (request->ssids)
6037 request->ie = (void *)(request->ssids + n_ssids);
6038 else
6039 request->ie = (void *)(request->channels + n_channels);
6040 }
6041
6042 if (n_match_sets) {
6043 if (request->ie)
6044 request->match_sets = (void *)(request->ie + ie_len);
6045 else if (request->ssids)
6046 request->match_sets =
6047 (void *)(request->ssids + n_ssids);
6048 else
6049 request->match_sets =
6050 (void *)(request->channels + n_channels);
6051 }
6052 request->n_match_sets = n_match_sets;
6053
6054 i = 0;
6055 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6056 /* user specified, bail out if channel not found */
6057 nla_for_each_nested(attr,
6058 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6059 tmp) {
6060 struct ieee80211_channel *chan;
6061
6062 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6063
6064 if (!chan) {
6065 err = -EINVAL;
6066 goto out_free;
6067 }
6068
6069 /* ignore disabled channels */
6070 if (chan->flags & IEEE80211_CHAN_DISABLED)
6071 continue;
6072
6073 request->channels[i] = chan;
6074 i++;
6075 }
6076 } else {
6077 /* all channels */
6078 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6079 int j;
6080 if (!wiphy->bands[band])
6081 continue;
6082 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6083 struct ieee80211_channel *chan;
6084
6085 chan = &wiphy->bands[band]->channels[j];
6086
6087 if (chan->flags & IEEE80211_CHAN_DISABLED)
6088 continue;
6089
6090 request->channels[i] = chan;
6091 i++;
6092 }
6093 }
6094 }
6095
6096 if (!i) {
6097 err = -EINVAL;
6098 goto out_free;
6099 }
6100
6101 request->n_channels = i;
6102
6103 i = 0;
6104 if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6105 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6106 tmp) {
6107 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6108 err = -EINVAL;
6109 goto out_free;
6110 }
6111 request->ssids[i].ssid_len = nla_len(attr);
6112 memcpy(request->ssids[i].ssid, nla_data(attr),
6113 nla_len(attr));
6114 i++;
6115 }
6116 }
6117
6118 i = 0;
6119 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6120 nla_for_each_nested(attr,
6121 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6122 tmp) {
6123 struct nlattr *ssid, *rssi;
6124
6125 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6126 nla_data(attr), nla_len(attr),
6127 nl80211_match_policy);
6128 if (err)
6129 goto out_free;
6130 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6131 if (ssid) {
6132 if (WARN_ON(i >= n_match_sets)) {
6133 /* this indicates a programming error,
6134 * the loop above should have verified
6135 * things properly
6136 */
6137 err = -EINVAL;
6138 goto out_free;
6139 }
6140
6141 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6142 err = -EINVAL;
6143 goto out_free;
6144 }
6145 memcpy(request->match_sets[i].ssid.ssid,
6146 nla_data(ssid), nla_len(ssid));
6147 request->match_sets[i].ssid.ssid_len =
6148 nla_len(ssid);
6149 /* special attribute - old implemenation w/a */
6150 request->match_sets[i].rssi_thold =
6151 default_match_rssi;
6152 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6153 if (rssi)
6154 request->match_sets[i].rssi_thold =
6155 nla_get_s32(rssi);
6156 }
6157 i++;
6158 }
6159
6160 /* there was no other matchset, so the RSSI one is alone */
6161 if (i == 0 && n_match_sets)
6162 request->match_sets[0].rssi_thold = default_match_rssi;
6163
6164 request->min_rssi_thold = INT_MAX;
6165 for (i = 0; i < n_match_sets; i++)
6166 request->min_rssi_thold =
6167 min(request->match_sets[i].rssi_thold,
6168 request->min_rssi_thold);
6169 } else {
6170 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6171 }
6172
6173 if (ie_len) {
6174 request->ie_len = ie_len;
6175 memcpy((void *)request->ie,
6176 nla_data(attrs[NL80211_ATTR_IE]),
6177 request->ie_len);
6178 }
6179
6180 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6181 request->flags = nla_get_u32(
6182 attrs[NL80211_ATTR_SCAN_FLAGS]);
6183 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6184 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6185 err = -EOPNOTSUPP;
6186 goto out_free;
6187 }
6188
6189 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6190 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6191
6192 if (!wdev) /* must be net-detect */
6193 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6194
6195 if (!(wiphy->features & flg)) {
6196 err = -EOPNOTSUPP;
6197 goto out_free;
6198 }
6199
6200 if (wdev && wdev->current_bss) {
6201 err = -EOPNOTSUPP;
6202 goto out_free;
6203 }
6204
6205 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6206 request->mac_addr_mask);
6207 if (err)
6208 goto out_free;
6209 }
6210 }
6211
6212 request->interval = interval;
6213 request->scan_start = jiffies;
6214
6215 return request;
6216
6217 out_free:
6218 kfree(request);
6219 return ERR_PTR(err);
6220 }
6221
6222 static int nl80211_start_sched_scan(struct sk_buff *skb,
6223 struct genl_info *info)
6224 {
6225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6226 struct net_device *dev = info->user_ptr[1];
6227 struct wireless_dev *wdev = dev->ieee80211_ptr;
6228 struct cfg80211_sched_scan_request *sched_scan_req;
6229 int err;
6230
6231 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6232 !rdev->ops->sched_scan_start)
6233 return -EOPNOTSUPP;
6234
6235 if (rdev->sched_scan_req)
6236 return -EINPROGRESS;
6237
6238 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6239 info->attrs);
6240
6241 err = PTR_ERR_OR_ZERO(sched_scan_req);
6242 if (err)
6243 goto out_err;
6244
6245 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6246 if (err)
6247 goto out_free;
6248
6249 sched_scan_req->dev = dev;
6250 sched_scan_req->wiphy = &rdev->wiphy;
6251
6252 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6253 sched_scan_req->owner_nlportid = info->snd_portid;
6254
6255 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6256
6257 nl80211_send_sched_scan(rdev, dev,
6258 NL80211_CMD_START_SCHED_SCAN);
6259 return 0;
6260
6261 out_free:
6262 kfree(sched_scan_req);
6263 out_err:
6264 return err;
6265 }
6266
6267 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6268 struct genl_info *info)
6269 {
6270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6271
6272 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6273 !rdev->ops->sched_scan_stop)
6274 return -EOPNOTSUPP;
6275
6276 return __cfg80211_stop_sched_scan(rdev, false);
6277 }
6278
6279 static int nl80211_start_radar_detection(struct sk_buff *skb,
6280 struct genl_info *info)
6281 {
6282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6283 struct net_device *dev = info->user_ptr[1];
6284 struct wireless_dev *wdev = dev->ieee80211_ptr;
6285 struct cfg80211_chan_def chandef;
6286 enum nl80211_dfs_regions dfs_region;
6287 unsigned int cac_time_ms;
6288 int err;
6289
6290 dfs_region = reg_get_dfs_region(wdev->wiphy);
6291 if (dfs_region == NL80211_DFS_UNSET)
6292 return -EINVAL;
6293
6294 err = nl80211_parse_chandef(rdev, info, &chandef);
6295 if (err)
6296 return err;
6297
6298 if (netif_carrier_ok(dev))
6299 return -EBUSY;
6300
6301 if (wdev->cac_started)
6302 return -EBUSY;
6303
6304 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6305 wdev->iftype);
6306 if (err < 0)
6307 return err;
6308
6309 if (err == 0)
6310 return -EINVAL;
6311
6312 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6313 return -EINVAL;
6314
6315 if (!rdev->ops->start_radar_detection)
6316 return -EOPNOTSUPP;
6317
6318 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6319 if (WARN_ON(!cac_time_ms))
6320 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6321
6322 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6323 cac_time_ms);
6324 if (!err) {
6325 wdev->chandef = chandef;
6326 wdev->cac_started = true;
6327 wdev->cac_start_time = jiffies;
6328 wdev->cac_time_ms = cac_time_ms;
6329 }
6330 return err;
6331 }
6332
6333 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6334 {
6335 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6336 struct net_device *dev = info->user_ptr[1];
6337 struct wireless_dev *wdev = dev->ieee80211_ptr;
6338 struct cfg80211_csa_settings params;
6339 /* csa_attrs is defined static to avoid waste of stack size - this
6340 * function is called under RTNL lock, so this should not be a problem.
6341 */
6342 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6343 int err;
6344 bool need_new_beacon = false;
6345 int len, i;
6346 u32 cs_count;
6347
6348 if (!rdev->ops->channel_switch ||
6349 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6350 return -EOPNOTSUPP;
6351
6352 switch (dev->ieee80211_ptr->iftype) {
6353 case NL80211_IFTYPE_AP:
6354 case NL80211_IFTYPE_P2P_GO:
6355 need_new_beacon = true;
6356
6357 /* useless if AP is not running */
6358 if (!wdev->beacon_interval)
6359 return -ENOTCONN;
6360 break;
6361 case NL80211_IFTYPE_ADHOC:
6362 if (!wdev->ssid_len)
6363 return -ENOTCONN;
6364 break;
6365 case NL80211_IFTYPE_MESH_POINT:
6366 if (!wdev->mesh_id_len)
6367 return -ENOTCONN;
6368 break;
6369 default:
6370 return -EOPNOTSUPP;
6371 }
6372
6373 memset(&params, 0, sizeof(params));
6374
6375 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6376 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6377 return -EINVAL;
6378
6379 /* only important for AP, IBSS and mesh create IEs internally */
6380 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6381 return -EINVAL;
6382
6383 /* Even though the attribute is u32, the specification says
6384 * u8, so let's make sure we don't overflow.
6385 */
6386 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6387 if (cs_count > 255)
6388 return -EINVAL;
6389
6390 params.count = cs_count;
6391
6392 if (!need_new_beacon)
6393 goto skip_beacons;
6394
6395 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6396 if (err)
6397 return err;
6398
6399 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6400 info->attrs[NL80211_ATTR_CSA_IES],
6401 nl80211_policy);
6402 if (err)
6403 return err;
6404
6405 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6406 if (err)
6407 return err;
6408
6409 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6410 return -EINVAL;
6411
6412 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6413 if (!len || (len % sizeof(u16)))
6414 return -EINVAL;
6415
6416 params.n_counter_offsets_beacon = len / sizeof(u16);
6417 if (rdev->wiphy.max_num_csa_counters &&
6418 (params.n_counter_offsets_beacon >
6419 rdev->wiphy.max_num_csa_counters))
6420 return -EINVAL;
6421
6422 params.counter_offsets_beacon =
6423 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6424
6425 /* sanity checks - counters should fit and be the same */
6426 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6427 u16 offset = params.counter_offsets_beacon[i];
6428
6429 if (offset >= params.beacon_csa.tail_len)
6430 return -EINVAL;
6431
6432 if (params.beacon_csa.tail[offset] != params.count)
6433 return -EINVAL;
6434 }
6435
6436 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6437 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6438 if (!len || (len % sizeof(u16)))
6439 return -EINVAL;
6440
6441 params.n_counter_offsets_presp = len / sizeof(u16);
6442 if (rdev->wiphy.max_num_csa_counters &&
6443 (params.n_counter_offsets_beacon >
6444 rdev->wiphy.max_num_csa_counters))
6445 return -EINVAL;
6446
6447 params.counter_offsets_presp =
6448 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6449
6450 /* sanity checks - counters should fit and be the same */
6451 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6452 u16 offset = params.counter_offsets_presp[i];
6453
6454 if (offset >= params.beacon_csa.probe_resp_len)
6455 return -EINVAL;
6456
6457 if (params.beacon_csa.probe_resp[offset] !=
6458 params.count)
6459 return -EINVAL;
6460 }
6461 }
6462
6463 skip_beacons:
6464 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6465 if (err)
6466 return err;
6467
6468 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6469 wdev->iftype))
6470 return -EINVAL;
6471
6472 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6473 &params.chandef,
6474 wdev->iftype);
6475 if (err < 0)
6476 return err;
6477
6478 if (err > 0)
6479 params.radar_required = true;
6480
6481 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6482 params.block_tx = true;
6483
6484 wdev_lock(wdev);
6485 err = rdev_channel_switch(rdev, dev, &params);
6486 wdev_unlock(wdev);
6487
6488 return err;
6489 }
6490
6491 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6492 u32 seq, int flags,
6493 struct cfg80211_registered_device *rdev,
6494 struct wireless_dev *wdev,
6495 struct cfg80211_internal_bss *intbss)
6496 {
6497 struct cfg80211_bss *res = &intbss->pub;
6498 const struct cfg80211_bss_ies *ies;
6499 void *hdr;
6500 struct nlattr *bss;
6501
6502 ASSERT_WDEV_LOCK(wdev);
6503
6504 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6505 NL80211_CMD_NEW_SCAN_RESULTS);
6506 if (!hdr)
6507 return -1;
6508
6509 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6510
6511 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6512 goto nla_put_failure;
6513 if (wdev->netdev &&
6514 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6515 goto nla_put_failure;
6516 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6517 goto nla_put_failure;
6518
6519 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6520 if (!bss)
6521 goto nla_put_failure;
6522 if ((!is_zero_ether_addr(res->bssid) &&
6523 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6524 goto nla_put_failure;
6525
6526 rcu_read_lock();
6527 /* indicate whether we have probe response data or not */
6528 if (rcu_access_pointer(res->proberesp_ies) &&
6529 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6530 goto fail_unlock_rcu;
6531
6532 /* this pointer prefers to be pointed to probe response data
6533 * but is always valid
6534 */
6535 ies = rcu_dereference(res->ies);
6536 if (ies) {
6537 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6538 goto fail_unlock_rcu;
6539 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6540 ies->len, ies->data))
6541 goto fail_unlock_rcu;
6542 }
6543
6544 /* and this pointer is always (unless driver didn't know) beacon data */
6545 ies = rcu_dereference(res->beacon_ies);
6546 if (ies && ies->from_beacon) {
6547 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6548 goto fail_unlock_rcu;
6549 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6550 ies->len, ies->data))
6551 goto fail_unlock_rcu;
6552 }
6553 rcu_read_unlock();
6554
6555 if (res->beacon_interval &&
6556 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6557 goto nla_put_failure;
6558 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6559 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6560 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6561 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6562 jiffies_to_msecs(jiffies - intbss->ts)))
6563 goto nla_put_failure;
6564
6565 switch (rdev->wiphy.signal_type) {
6566 case CFG80211_SIGNAL_TYPE_MBM:
6567 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6568 goto nla_put_failure;
6569 break;
6570 case CFG80211_SIGNAL_TYPE_UNSPEC:
6571 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6572 goto nla_put_failure;
6573 break;
6574 default:
6575 break;
6576 }
6577
6578 switch (wdev->iftype) {
6579 case NL80211_IFTYPE_P2P_CLIENT:
6580 case NL80211_IFTYPE_STATION:
6581 if (intbss == wdev->current_bss &&
6582 nla_put_u32(msg, NL80211_BSS_STATUS,
6583 NL80211_BSS_STATUS_ASSOCIATED))
6584 goto nla_put_failure;
6585 break;
6586 case NL80211_IFTYPE_ADHOC:
6587 if (intbss == wdev->current_bss &&
6588 nla_put_u32(msg, NL80211_BSS_STATUS,
6589 NL80211_BSS_STATUS_IBSS_JOINED))
6590 goto nla_put_failure;
6591 break;
6592 default:
6593 break;
6594 }
6595
6596 nla_nest_end(msg, bss);
6597
6598 genlmsg_end(msg, hdr);
6599 return 0;
6600
6601 fail_unlock_rcu:
6602 rcu_read_unlock();
6603 nla_put_failure:
6604 genlmsg_cancel(msg, hdr);
6605 return -EMSGSIZE;
6606 }
6607
6608 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6609 {
6610 struct cfg80211_registered_device *rdev;
6611 struct cfg80211_internal_bss *scan;
6612 struct wireless_dev *wdev;
6613 int start = cb->args[2], idx = 0;
6614 int err;
6615
6616 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6617 if (err)
6618 return err;
6619
6620 wdev_lock(wdev);
6621 spin_lock_bh(&rdev->bss_lock);
6622 cfg80211_bss_expire(rdev);
6623
6624 cb->seq = rdev->bss_generation;
6625
6626 list_for_each_entry(scan, &rdev->bss_list, list) {
6627 if (++idx <= start)
6628 continue;
6629 if (nl80211_send_bss(skb, cb,
6630 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6631 rdev, wdev, scan) < 0) {
6632 idx--;
6633 break;
6634 }
6635 }
6636
6637 spin_unlock_bh(&rdev->bss_lock);
6638 wdev_unlock(wdev);
6639
6640 cb->args[2] = idx;
6641 nl80211_finish_wdev_dump(rdev);
6642
6643 return skb->len;
6644 }
6645
6646 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6647 int flags, struct net_device *dev,
6648 bool allow_radio_stats,
6649 struct survey_info *survey)
6650 {
6651 void *hdr;
6652 struct nlattr *infoattr;
6653
6654 /* skip radio stats if userspace didn't request them */
6655 if (!survey->channel && !allow_radio_stats)
6656 return 0;
6657
6658 hdr = nl80211hdr_put(msg, portid, seq, flags,
6659 NL80211_CMD_NEW_SURVEY_RESULTS);
6660 if (!hdr)
6661 return -ENOMEM;
6662
6663 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6664 goto nla_put_failure;
6665
6666 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6667 if (!infoattr)
6668 goto nla_put_failure;
6669
6670 if (survey->channel &&
6671 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6672 survey->channel->center_freq))
6673 goto nla_put_failure;
6674
6675 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6676 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6677 goto nla_put_failure;
6678 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6679 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6680 goto nla_put_failure;
6681 if ((survey->filled & SURVEY_INFO_TIME) &&
6682 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6683 survey->time))
6684 goto nla_put_failure;
6685 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6686 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6687 survey->time_busy))
6688 goto nla_put_failure;
6689 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6690 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6691 survey->time_ext_busy))
6692 goto nla_put_failure;
6693 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6694 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6695 survey->time_rx))
6696 goto nla_put_failure;
6697 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6698 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6699 survey->time_tx))
6700 goto nla_put_failure;
6701 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6702 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6703 survey->time_scan))
6704 goto nla_put_failure;
6705
6706 nla_nest_end(msg, infoattr);
6707
6708 genlmsg_end(msg, hdr);
6709 return 0;
6710
6711 nla_put_failure:
6712 genlmsg_cancel(msg, hdr);
6713 return -EMSGSIZE;
6714 }
6715
6716 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6717 {
6718 struct survey_info survey;
6719 struct cfg80211_registered_device *rdev;
6720 struct wireless_dev *wdev;
6721 int survey_idx = cb->args[2];
6722 int res;
6723 bool radio_stats;
6724
6725 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6726 if (res)
6727 return res;
6728
6729 /* prepare_wdev_dump parsed the attributes */
6730 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6731
6732 if (!wdev->netdev) {
6733 res = -EINVAL;
6734 goto out_err;
6735 }
6736
6737 if (!rdev->ops->dump_survey) {
6738 res = -EOPNOTSUPP;
6739 goto out_err;
6740 }
6741
6742 while (1) {
6743 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6744 if (res == -ENOENT)
6745 break;
6746 if (res)
6747 goto out_err;
6748
6749 /* don't send disabled channels, but do send non-channel data */
6750 if (survey.channel &&
6751 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6752 survey_idx++;
6753 continue;
6754 }
6755
6756 if (nl80211_send_survey(skb,
6757 NETLINK_CB(cb->skb).portid,
6758 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6759 wdev->netdev, radio_stats, &survey) < 0)
6760 goto out;
6761 survey_idx++;
6762 }
6763
6764 out:
6765 cb->args[2] = survey_idx;
6766 res = skb->len;
6767 out_err:
6768 nl80211_finish_wdev_dump(rdev);
6769 return res;
6770 }
6771
6772 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6773 {
6774 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6775 NL80211_WPA_VERSION_2));
6776 }
6777
6778 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6779 {
6780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6781 struct net_device *dev = info->user_ptr[1];
6782 struct ieee80211_channel *chan;
6783 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6784 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6785 enum nl80211_auth_type auth_type;
6786 struct key_parse key;
6787 bool local_state_change;
6788
6789 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6790 return -EINVAL;
6791
6792 if (!info->attrs[NL80211_ATTR_MAC])
6793 return -EINVAL;
6794
6795 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6796 return -EINVAL;
6797
6798 if (!info->attrs[NL80211_ATTR_SSID])
6799 return -EINVAL;
6800
6801 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6802 return -EINVAL;
6803
6804 err = nl80211_parse_key(info, &key);
6805 if (err)
6806 return err;
6807
6808 if (key.idx >= 0) {
6809 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6810 return -EINVAL;
6811 if (!key.p.key || !key.p.key_len)
6812 return -EINVAL;
6813 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6814 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6815 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6816 key.p.key_len != WLAN_KEY_LEN_WEP104))
6817 return -EINVAL;
6818 if (key.idx > 4)
6819 return -EINVAL;
6820 } else {
6821 key.p.key_len = 0;
6822 key.p.key = NULL;
6823 }
6824
6825 if (key.idx >= 0) {
6826 int i;
6827 bool ok = false;
6828 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6829 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6830 ok = true;
6831 break;
6832 }
6833 }
6834 if (!ok)
6835 return -EINVAL;
6836 }
6837
6838 if (!rdev->ops->auth)
6839 return -EOPNOTSUPP;
6840
6841 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6842 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6843 return -EOPNOTSUPP;
6844
6845 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6846 chan = nl80211_get_valid_chan(&rdev->wiphy,
6847 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6848 if (!chan)
6849 return -EINVAL;
6850
6851 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6852 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6853
6854 if (info->attrs[NL80211_ATTR_IE]) {
6855 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6856 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6857 }
6858
6859 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6860 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6861 return -EINVAL;
6862
6863 if (auth_type == NL80211_AUTHTYPE_SAE &&
6864 !info->attrs[NL80211_ATTR_SAE_DATA])
6865 return -EINVAL;
6866
6867 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6868 if (auth_type != NL80211_AUTHTYPE_SAE)
6869 return -EINVAL;
6870 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6871 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6872 /* need to include at least Auth Transaction and Status Code */
6873 if (sae_data_len < 4)
6874 return -EINVAL;
6875 }
6876
6877 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6878
6879 /*
6880 * Since we no longer track auth state, ignore
6881 * requests to only change local state.
6882 */
6883 if (local_state_change)
6884 return 0;
6885
6886 wdev_lock(dev->ieee80211_ptr);
6887 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6888 ssid, ssid_len, ie, ie_len,
6889 key.p.key, key.p.key_len, key.idx,
6890 sae_data, sae_data_len);
6891 wdev_unlock(dev->ieee80211_ptr);
6892 return err;
6893 }
6894
6895 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6896 struct genl_info *info,
6897 struct cfg80211_crypto_settings *settings,
6898 int cipher_limit)
6899 {
6900 memset(settings, 0, sizeof(*settings));
6901
6902 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6903
6904 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6905 u16 proto;
6906 proto = nla_get_u16(
6907 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6908 settings->control_port_ethertype = cpu_to_be16(proto);
6909 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6910 proto != ETH_P_PAE)
6911 return -EINVAL;
6912 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6913 settings->control_port_no_encrypt = true;
6914 } else
6915 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6916
6917 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6918 void *data;
6919 int len, i;
6920
6921 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6922 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6923 settings->n_ciphers_pairwise = len / sizeof(u32);
6924
6925 if (len % sizeof(u32))
6926 return -EINVAL;
6927
6928 if (settings->n_ciphers_pairwise > cipher_limit)
6929 return -EINVAL;
6930
6931 memcpy(settings->ciphers_pairwise, data, len);
6932
6933 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6934 if (!cfg80211_supported_cipher_suite(
6935 &rdev->wiphy,
6936 settings->ciphers_pairwise[i]))
6937 return -EINVAL;
6938 }
6939
6940 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6941 settings->cipher_group =
6942 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6943 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6944 settings->cipher_group))
6945 return -EINVAL;
6946 }
6947
6948 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6949 settings->wpa_versions =
6950 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6951 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6952 return -EINVAL;
6953 }
6954
6955 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6956 void *data;
6957 int len;
6958
6959 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6960 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6961 settings->n_akm_suites = len / sizeof(u32);
6962
6963 if (len % sizeof(u32))
6964 return -EINVAL;
6965
6966 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6967 return -EINVAL;
6968
6969 memcpy(settings->akm_suites, data, len);
6970 }
6971
6972 return 0;
6973 }
6974
6975 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6976 {
6977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6978 struct net_device *dev = info->user_ptr[1];
6979 struct ieee80211_channel *chan;
6980 struct cfg80211_assoc_request req = {};
6981 const u8 *bssid, *ssid;
6982 int err, ssid_len = 0;
6983
6984 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6985 return -EINVAL;
6986
6987 if (!info->attrs[NL80211_ATTR_MAC] ||
6988 !info->attrs[NL80211_ATTR_SSID] ||
6989 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6990 return -EINVAL;
6991
6992 if (!rdev->ops->assoc)
6993 return -EOPNOTSUPP;
6994
6995 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6996 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6997 return -EOPNOTSUPP;
6998
6999 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7000
7001 chan = nl80211_get_valid_chan(&rdev->wiphy,
7002 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7003 if (!chan)
7004 return -EINVAL;
7005
7006 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7007 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7008
7009 if (info->attrs[NL80211_ATTR_IE]) {
7010 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7011 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7012 }
7013
7014 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7015 enum nl80211_mfp mfp =
7016 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7017 if (mfp == NL80211_MFP_REQUIRED)
7018 req.use_mfp = true;
7019 else if (mfp != NL80211_MFP_NO)
7020 return -EINVAL;
7021 }
7022
7023 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7024 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7025
7026 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7027 req.flags |= ASSOC_REQ_DISABLE_HT;
7028
7029 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7030 memcpy(&req.ht_capa_mask,
7031 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7032 sizeof(req.ht_capa_mask));
7033
7034 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7035 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7036 return -EINVAL;
7037 memcpy(&req.ht_capa,
7038 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7039 sizeof(req.ht_capa));
7040 }
7041
7042 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7043 req.flags |= ASSOC_REQ_DISABLE_VHT;
7044
7045 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7046 memcpy(&req.vht_capa_mask,
7047 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7048 sizeof(req.vht_capa_mask));
7049
7050 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7051 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7052 return -EINVAL;
7053 memcpy(&req.vht_capa,
7054 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7055 sizeof(req.vht_capa));
7056 }
7057
7058 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7059 if (!(rdev->wiphy.features &
7060 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7061 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7062 return -EINVAL;
7063 req.flags |= ASSOC_REQ_USE_RRM;
7064 }
7065
7066 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7067 if (!err) {
7068 wdev_lock(dev->ieee80211_ptr);
7069 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7070 ssid, ssid_len, &req);
7071 wdev_unlock(dev->ieee80211_ptr);
7072 }
7073
7074 return err;
7075 }
7076
7077 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7078 {
7079 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7080 struct net_device *dev = info->user_ptr[1];
7081 const u8 *ie = NULL, *bssid;
7082 int ie_len = 0, err;
7083 u16 reason_code;
7084 bool local_state_change;
7085
7086 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7087 return -EINVAL;
7088
7089 if (!info->attrs[NL80211_ATTR_MAC])
7090 return -EINVAL;
7091
7092 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7093 return -EINVAL;
7094
7095 if (!rdev->ops->deauth)
7096 return -EOPNOTSUPP;
7097
7098 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7099 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7100 return -EOPNOTSUPP;
7101
7102 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7103
7104 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7105 if (reason_code == 0) {
7106 /* Reason Code 0 is reserved */
7107 return -EINVAL;
7108 }
7109
7110 if (info->attrs[NL80211_ATTR_IE]) {
7111 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7112 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7113 }
7114
7115 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7116
7117 wdev_lock(dev->ieee80211_ptr);
7118 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7119 local_state_change);
7120 wdev_unlock(dev->ieee80211_ptr);
7121 return err;
7122 }
7123
7124 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7125 {
7126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7127 struct net_device *dev = info->user_ptr[1];
7128 const u8 *ie = NULL, *bssid;
7129 int ie_len = 0, err;
7130 u16 reason_code;
7131 bool local_state_change;
7132
7133 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7134 return -EINVAL;
7135
7136 if (!info->attrs[NL80211_ATTR_MAC])
7137 return -EINVAL;
7138
7139 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7140 return -EINVAL;
7141
7142 if (!rdev->ops->disassoc)
7143 return -EOPNOTSUPP;
7144
7145 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7146 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7147 return -EOPNOTSUPP;
7148
7149 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7150
7151 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7152 if (reason_code == 0) {
7153 /* Reason Code 0 is reserved */
7154 return -EINVAL;
7155 }
7156
7157 if (info->attrs[NL80211_ATTR_IE]) {
7158 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7159 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7160 }
7161
7162 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7163
7164 wdev_lock(dev->ieee80211_ptr);
7165 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7166 local_state_change);
7167 wdev_unlock(dev->ieee80211_ptr);
7168 return err;
7169 }
7170
7171 static bool
7172 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7173 int mcast_rate[IEEE80211_NUM_BANDS],
7174 int rateval)
7175 {
7176 struct wiphy *wiphy = &rdev->wiphy;
7177 bool found = false;
7178 int band, i;
7179
7180 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7181 struct ieee80211_supported_band *sband;
7182
7183 sband = wiphy->bands[band];
7184 if (!sband)
7185 continue;
7186
7187 for (i = 0; i < sband->n_bitrates; i++) {
7188 if (sband->bitrates[i].bitrate == rateval) {
7189 mcast_rate[band] = i + 1;
7190 found = true;
7191 break;
7192 }
7193 }
7194 }
7195
7196 return found;
7197 }
7198
7199 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7200 {
7201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7202 struct net_device *dev = info->user_ptr[1];
7203 struct cfg80211_ibss_params ibss;
7204 struct wiphy *wiphy;
7205 struct cfg80211_cached_keys *connkeys = NULL;
7206 int err;
7207
7208 memset(&ibss, 0, sizeof(ibss));
7209
7210 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7211 return -EINVAL;
7212
7213 if (!info->attrs[NL80211_ATTR_SSID] ||
7214 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7215 return -EINVAL;
7216
7217 ibss.beacon_interval = 100;
7218
7219 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7220 ibss.beacon_interval =
7221 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7222 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7223 return -EINVAL;
7224 }
7225
7226 if (!rdev->ops->join_ibss)
7227 return -EOPNOTSUPP;
7228
7229 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7230 return -EOPNOTSUPP;
7231
7232 wiphy = &rdev->wiphy;
7233
7234 if (info->attrs[NL80211_ATTR_MAC]) {
7235 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7236
7237 if (!is_valid_ether_addr(ibss.bssid))
7238 return -EINVAL;
7239 }
7240 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7241 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7242
7243 if (info->attrs[NL80211_ATTR_IE]) {
7244 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7245 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7246 }
7247
7248 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7249 if (err)
7250 return err;
7251
7252 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7253 NL80211_IFTYPE_ADHOC))
7254 return -EINVAL;
7255
7256 switch (ibss.chandef.width) {
7257 case NL80211_CHAN_WIDTH_5:
7258 case NL80211_CHAN_WIDTH_10:
7259 case NL80211_CHAN_WIDTH_20_NOHT:
7260 break;
7261 case NL80211_CHAN_WIDTH_20:
7262 case NL80211_CHAN_WIDTH_40:
7263 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7264 break;
7265 default:
7266 return -EINVAL;
7267 }
7268
7269 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7270 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7271
7272 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7273 u8 *rates =
7274 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7275 int n_rates =
7276 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7277 struct ieee80211_supported_band *sband =
7278 wiphy->bands[ibss.chandef.chan->band];
7279
7280 err = ieee80211_get_ratemask(sband, rates, n_rates,
7281 &ibss.basic_rates);
7282 if (err)
7283 return err;
7284 }
7285
7286 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7287 memcpy(&ibss.ht_capa_mask,
7288 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7289 sizeof(ibss.ht_capa_mask));
7290
7291 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7292 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7293 return -EINVAL;
7294 memcpy(&ibss.ht_capa,
7295 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7296 sizeof(ibss.ht_capa));
7297 }
7298
7299 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7300 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7301 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7302 return -EINVAL;
7303
7304 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7305 bool no_ht = false;
7306
7307 connkeys = nl80211_parse_connkeys(rdev,
7308 info->attrs[NL80211_ATTR_KEYS],
7309 &no_ht);
7310 if (IS_ERR(connkeys))
7311 return PTR_ERR(connkeys);
7312
7313 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7314 no_ht) {
7315 kfree(connkeys);
7316 return -EINVAL;
7317 }
7318 }
7319
7320 ibss.control_port =
7321 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7322
7323 ibss.userspace_handles_dfs =
7324 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7325
7326 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7327 if (err)
7328 kzfree(connkeys);
7329 return err;
7330 }
7331
7332 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7333 {
7334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7335 struct net_device *dev = info->user_ptr[1];
7336
7337 if (!rdev->ops->leave_ibss)
7338 return -EOPNOTSUPP;
7339
7340 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7341 return -EOPNOTSUPP;
7342
7343 return cfg80211_leave_ibss(rdev, dev, false);
7344 }
7345
7346 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7347 {
7348 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7349 struct net_device *dev = info->user_ptr[1];
7350 int mcast_rate[IEEE80211_NUM_BANDS];
7351 u32 nla_rate;
7352 int err;
7353
7354 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7355 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7356 return -EOPNOTSUPP;
7357
7358 if (!rdev->ops->set_mcast_rate)
7359 return -EOPNOTSUPP;
7360
7361 memset(mcast_rate, 0, sizeof(mcast_rate));
7362
7363 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7364 return -EINVAL;
7365
7366 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7367 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7368 return -EINVAL;
7369
7370 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7371
7372 return err;
7373 }
7374
7375 static struct sk_buff *
7376 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7377 int approxlen, u32 portid, u32 seq,
7378 enum nl80211_commands cmd,
7379 enum nl80211_attrs attr,
7380 const struct nl80211_vendor_cmd_info *info,
7381 gfp_t gfp)
7382 {
7383 struct sk_buff *skb;
7384 void *hdr;
7385 struct nlattr *data;
7386
7387 skb = nlmsg_new(approxlen + 100, gfp);
7388 if (!skb)
7389 return NULL;
7390
7391 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7392 if (!hdr) {
7393 kfree_skb(skb);
7394 return NULL;
7395 }
7396
7397 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7398 goto nla_put_failure;
7399
7400 if (info) {
7401 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7402 info->vendor_id))
7403 goto nla_put_failure;
7404 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7405 info->subcmd))
7406 goto nla_put_failure;
7407 }
7408
7409 data = nla_nest_start(skb, attr);
7410
7411 ((void **)skb->cb)[0] = rdev;
7412 ((void **)skb->cb)[1] = hdr;
7413 ((void **)skb->cb)[2] = data;
7414
7415 return skb;
7416
7417 nla_put_failure:
7418 kfree_skb(skb);
7419 return NULL;
7420 }
7421
7422 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7423 enum nl80211_commands cmd,
7424 enum nl80211_attrs attr,
7425 int vendor_event_idx,
7426 int approxlen, gfp_t gfp)
7427 {
7428 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7429 const struct nl80211_vendor_cmd_info *info;
7430
7431 switch (cmd) {
7432 case NL80211_CMD_TESTMODE:
7433 if (WARN_ON(vendor_event_idx != -1))
7434 return NULL;
7435 info = NULL;
7436 break;
7437 case NL80211_CMD_VENDOR:
7438 if (WARN_ON(vendor_event_idx < 0 ||
7439 vendor_event_idx >= wiphy->n_vendor_events))
7440 return NULL;
7441 info = &wiphy->vendor_events[vendor_event_idx];
7442 break;
7443 default:
7444 WARN_ON(1);
7445 return NULL;
7446 }
7447
7448 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7449 cmd, attr, info, gfp);
7450 }
7451 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7452
7453 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7454 {
7455 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7456 void *hdr = ((void **)skb->cb)[1];
7457 struct nlattr *data = ((void **)skb->cb)[2];
7458 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7459
7460 /* clear CB data for netlink core to own from now on */
7461 memset(skb->cb, 0, sizeof(skb->cb));
7462
7463 nla_nest_end(skb, data);
7464 genlmsg_end(skb, hdr);
7465
7466 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7467 mcgrp = NL80211_MCGRP_VENDOR;
7468
7469 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7470 mcgrp, gfp);
7471 }
7472 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7473
7474 #ifdef CONFIG_NL80211_TESTMODE
7475 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7476 {
7477 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7478 struct wireless_dev *wdev =
7479 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7480 int err;
7481
7482 if (!rdev->ops->testmode_cmd)
7483 return -EOPNOTSUPP;
7484
7485 if (IS_ERR(wdev)) {
7486 err = PTR_ERR(wdev);
7487 if (err != -EINVAL)
7488 return err;
7489 wdev = NULL;
7490 } else if (wdev->wiphy != &rdev->wiphy) {
7491 return -EINVAL;
7492 }
7493
7494 if (!info->attrs[NL80211_ATTR_TESTDATA])
7495 return -EINVAL;
7496
7497 rdev->cur_cmd_info = info;
7498 err = rdev_testmode_cmd(rdev, wdev,
7499 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7500 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7501 rdev->cur_cmd_info = NULL;
7502
7503 return err;
7504 }
7505
7506 static int nl80211_testmode_dump(struct sk_buff *skb,
7507 struct netlink_callback *cb)
7508 {
7509 struct cfg80211_registered_device *rdev;
7510 int err;
7511 long phy_idx;
7512 void *data = NULL;
7513 int data_len = 0;
7514
7515 rtnl_lock();
7516
7517 if (cb->args[0]) {
7518 /*
7519 * 0 is a valid index, but not valid for args[0],
7520 * so we need to offset by 1.
7521 */
7522 phy_idx = cb->args[0] - 1;
7523 } else {
7524 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7525 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7526 nl80211_policy);
7527 if (err)
7528 goto out_err;
7529
7530 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7531 nl80211_fam.attrbuf);
7532 if (IS_ERR(rdev)) {
7533 err = PTR_ERR(rdev);
7534 goto out_err;
7535 }
7536 phy_idx = rdev->wiphy_idx;
7537 rdev = NULL;
7538
7539 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7540 cb->args[1] =
7541 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7542 }
7543
7544 if (cb->args[1]) {
7545 data = nla_data((void *)cb->args[1]);
7546 data_len = nla_len((void *)cb->args[1]);
7547 }
7548
7549 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7550 if (!rdev) {
7551 err = -ENOENT;
7552 goto out_err;
7553 }
7554
7555 if (!rdev->ops->testmode_dump) {
7556 err = -EOPNOTSUPP;
7557 goto out_err;
7558 }
7559
7560 while (1) {
7561 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7562 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7563 NL80211_CMD_TESTMODE);
7564 struct nlattr *tmdata;
7565
7566 if (!hdr)
7567 break;
7568
7569 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7570 genlmsg_cancel(skb, hdr);
7571 break;
7572 }
7573
7574 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7575 if (!tmdata) {
7576 genlmsg_cancel(skb, hdr);
7577 break;
7578 }
7579 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7580 nla_nest_end(skb, tmdata);
7581
7582 if (err == -ENOBUFS || err == -ENOENT) {
7583 genlmsg_cancel(skb, hdr);
7584 break;
7585 } else if (err) {
7586 genlmsg_cancel(skb, hdr);
7587 goto out_err;
7588 }
7589
7590 genlmsg_end(skb, hdr);
7591 }
7592
7593 err = skb->len;
7594 /* see above */
7595 cb->args[0] = phy_idx + 1;
7596 out_err:
7597 rtnl_unlock();
7598 return err;
7599 }
7600 #endif
7601
7602 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7603 {
7604 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7605 struct net_device *dev = info->user_ptr[1];
7606 struct cfg80211_connect_params connect;
7607 struct wiphy *wiphy;
7608 struct cfg80211_cached_keys *connkeys = NULL;
7609 int err;
7610
7611 memset(&connect, 0, sizeof(connect));
7612
7613 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7614 return -EINVAL;
7615
7616 if (!info->attrs[NL80211_ATTR_SSID] ||
7617 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7618 return -EINVAL;
7619
7620 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7621 connect.auth_type =
7622 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7623 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7624 NL80211_CMD_CONNECT))
7625 return -EINVAL;
7626 } else
7627 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7628
7629 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7630
7631 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7632 NL80211_MAX_NR_CIPHER_SUITES);
7633 if (err)
7634 return err;
7635
7636 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7637 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7638 return -EOPNOTSUPP;
7639
7640 wiphy = &rdev->wiphy;
7641
7642 connect.bg_scan_period = -1;
7643 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7644 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7645 connect.bg_scan_period =
7646 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7647 }
7648
7649 if (info->attrs[NL80211_ATTR_MAC])
7650 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7651 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7652 connect.bssid_hint =
7653 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7654 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7655 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7656
7657 if (info->attrs[NL80211_ATTR_IE]) {
7658 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7659 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7660 }
7661
7662 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7663 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7664 if (connect.mfp != NL80211_MFP_REQUIRED &&
7665 connect.mfp != NL80211_MFP_NO)
7666 return -EINVAL;
7667 } else {
7668 connect.mfp = NL80211_MFP_NO;
7669 }
7670
7671 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7672 connect.channel = nl80211_get_valid_chan(
7673 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7674 if (!connect.channel)
7675 return -EINVAL;
7676 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7677 connect.channel_hint = nl80211_get_valid_chan(
7678 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7679 if (!connect.channel_hint)
7680 return -EINVAL;
7681 }
7682
7683 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7684 connkeys = nl80211_parse_connkeys(rdev,
7685 info->attrs[NL80211_ATTR_KEYS], NULL);
7686 if (IS_ERR(connkeys))
7687 return PTR_ERR(connkeys);
7688 }
7689
7690 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7691 connect.flags |= ASSOC_REQ_DISABLE_HT;
7692
7693 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7694 memcpy(&connect.ht_capa_mask,
7695 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7696 sizeof(connect.ht_capa_mask));
7697
7698 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7699 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7700 kzfree(connkeys);
7701 return -EINVAL;
7702 }
7703 memcpy(&connect.ht_capa,
7704 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7705 sizeof(connect.ht_capa));
7706 }
7707
7708 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7709 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7710
7711 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7712 memcpy(&connect.vht_capa_mask,
7713 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7714 sizeof(connect.vht_capa_mask));
7715
7716 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7717 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7718 kzfree(connkeys);
7719 return -EINVAL;
7720 }
7721 memcpy(&connect.vht_capa,
7722 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7723 sizeof(connect.vht_capa));
7724 }
7725
7726 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7727 if (!(rdev->wiphy.features &
7728 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7729 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7730 return -EINVAL;
7731 connect.flags |= ASSOC_REQ_USE_RRM;
7732 }
7733
7734 wdev_lock(dev->ieee80211_ptr);
7735 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7736 wdev_unlock(dev->ieee80211_ptr);
7737 if (err)
7738 kzfree(connkeys);
7739 return err;
7740 }
7741
7742 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7743 {
7744 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7745 struct net_device *dev = info->user_ptr[1];
7746 u16 reason;
7747 int ret;
7748
7749 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7750 reason = WLAN_REASON_DEAUTH_LEAVING;
7751 else
7752 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7753
7754 if (reason == 0)
7755 return -EINVAL;
7756
7757 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7758 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7759 return -EOPNOTSUPP;
7760
7761 wdev_lock(dev->ieee80211_ptr);
7762 ret = cfg80211_disconnect(rdev, dev, reason, true);
7763 wdev_unlock(dev->ieee80211_ptr);
7764 return ret;
7765 }
7766
7767 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7768 {
7769 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7770 struct net *net;
7771 int err;
7772 u32 pid;
7773
7774 if (!info->attrs[NL80211_ATTR_PID])
7775 return -EINVAL;
7776
7777 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7778
7779 net = get_net_ns_by_pid(pid);
7780 if (IS_ERR(net))
7781 return PTR_ERR(net);
7782
7783 err = 0;
7784
7785 /* check if anything to do */
7786 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7787 err = cfg80211_switch_netns(rdev, net);
7788
7789 put_net(net);
7790 return err;
7791 }
7792
7793 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7794 {
7795 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7796 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7797 struct cfg80211_pmksa *pmksa) = NULL;
7798 struct net_device *dev = info->user_ptr[1];
7799 struct cfg80211_pmksa pmksa;
7800
7801 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7802
7803 if (!info->attrs[NL80211_ATTR_MAC])
7804 return -EINVAL;
7805
7806 if (!info->attrs[NL80211_ATTR_PMKID])
7807 return -EINVAL;
7808
7809 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7810 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7811
7812 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7813 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7814 return -EOPNOTSUPP;
7815
7816 switch (info->genlhdr->cmd) {
7817 case NL80211_CMD_SET_PMKSA:
7818 rdev_ops = rdev->ops->set_pmksa;
7819 break;
7820 case NL80211_CMD_DEL_PMKSA:
7821 rdev_ops = rdev->ops->del_pmksa;
7822 break;
7823 default:
7824 WARN_ON(1);
7825 break;
7826 }
7827
7828 if (!rdev_ops)
7829 return -EOPNOTSUPP;
7830
7831 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7832 }
7833
7834 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7835 {
7836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7837 struct net_device *dev = info->user_ptr[1];
7838
7839 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7840 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7841 return -EOPNOTSUPP;
7842
7843 if (!rdev->ops->flush_pmksa)
7844 return -EOPNOTSUPP;
7845
7846 return rdev_flush_pmksa(rdev, dev);
7847 }
7848
7849 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7850 {
7851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7852 struct net_device *dev = info->user_ptr[1];
7853 u8 action_code, dialog_token;
7854 u32 peer_capability = 0;
7855 u16 status_code;
7856 u8 *peer;
7857 bool initiator;
7858
7859 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7860 !rdev->ops->tdls_mgmt)
7861 return -EOPNOTSUPP;
7862
7863 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7864 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7865 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7866 !info->attrs[NL80211_ATTR_IE] ||
7867 !info->attrs[NL80211_ATTR_MAC])
7868 return -EINVAL;
7869
7870 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7871 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7872 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7873 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7874 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7875 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7876 peer_capability =
7877 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7878
7879 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7880 dialog_token, status_code, peer_capability,
7881 initiator,
7882 nla_data(info->attrs[NL80211_ATTR_IE]),
7883 nla_len(info->attrs[NL80211_ATTR_IE]));
7884 }
7885
7886 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7887 {
7888 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7889 struct net_device *dev = info->user_ptr[1];
7890 enum nl80211_tdls_operation operation;
7891 u8 *peer;
7892
7893 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7894 !rdev->ops->tdls_oper)
7895 return -EOPNOTSUPP;
7896
7897 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7898 !info->attrs[NL80211_ATTR_MAC])
7899 return -EINVAL;
7900
7901 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7902 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7903
7904 return rdev_tdls_oper(rdev, dev, peer, operation);
7905 }
7906
7907 static int nl80211_remain_on_channel(struct sk_buff *skb,
7908 struct genl_info *info)
7909 {
7910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7911 struct wireless_dev *wdev = info->user_ptr[1];
7912 struct cfg80211_chan_def chandef;
7913 struct sk_buff *msg;
7914 void *hdr;
7915 u64 cookie;
7916 u32 duration;
7917 int err;
7918
7919 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7920 !info->attrs[NL80211_ATTR_DURATION])
7921 return -EINVAL;
7922
7923 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7924
7925 if (!rdev->ops->remain_on_channel ||
7926 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7927 return -EOPNOTSUPP;
7928
7929 /*
7930 * We should be on that channel for at least a minimum amount of
7931 * time (10ms) but no longer than the driver supports.
7932 */
7933 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7934 duration > rdev->wiphy.max_remain_on_channel_duration)
7935 return -EINVAL;
7936
7937 err = nl80211_parse_chandef(rdev, info, &chandef);
7938 if (err)
7939 return err;
7940
7941 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7942 if (!msg)
7943 return -ENOMEM;
7944
7945 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7946 NL80211_CMD_REMAIN_ON_CHANNEL);
7947 if (!hdr) {
7948 err = -ENOBUFS;
7949 goto free_msg;
7950 }
7951
7952 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7953 duration, &cookie);
7954
7955 if (err)
7956 goto free_msg;
7957
7958 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7959 goto nla_put_failure;
7960
7961 genlmsg_end(msg, hdr);
7962
7963 return genlmsg_reply(msg, info);
7964
7965 nla_put_failure:
7966 err = -ENOBUFS;
7967 free_msg:
7968 nlmsg_free(msg);
7969 return err;
7970 }
7971
7972 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7973 struct genl_info *info)
7974 {
7975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7976 struct wireless_dev *wdev = info->user_ptr[1];
7977 u64 cookie;
7978
7979 if (!info->attrs[NL80211_ATTR_COOKIE])
7980 return -EINVAL;
7981
7982 if (!rdev->ops->cancel_remain_on_channel)
7983 return -EOPNOTSUPP;
7984
7985 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7986
7987 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7988 }
7989
7990 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7991 u8 *rates, u8 rates_len)
7992 {
7993 u8 i;
7994 u32 mask = 0;
7995
7996 for (i = 0; i < rates_len; i++) {
7997 int rate = (rates[i] & 0x7f) * 5;
7998 int ridx;
7999 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8000 struct ieee80211_rate *srate =
8001 &sband->bitrates[ridx];
8002 if (rate == srate->bitrate) {
8003 mask |= 1 << ridx;
8004 break;
8005 }
8006 }
8007 if (ridx == sband->n_bitrates)
8008 return 0; /* rate not found */
8009 }
8010
8011 return mask;
8012 }
8013
8014 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8015 u8 *rates, u8 rates_len,
8016 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8017 {
8018 u8 i;
8019
8020 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8021
8022 for (i = 0; i < rates_len; i++) {
8023 int ridx, rbit;
8024
8025 ridx = rates[i] / 8;
8026 rbit = BIT(rates[i] % 8);
8027
8028 /* check validity */
8029 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8030 return false;
8031
8032 /* check availability */
8033 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8034 mcs[ridx] |= rbit;
8035 else
8036 return false;
8037 }
8038
8039 return true;
8040 }
8041
8042 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8043 {
8044 u16 mcs_mask = 0;
8045
8046 switch (vht_mcs_map) {
8047 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8048 break;
8049 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8050 mcs_mask = 0x00FF;
8051 break;
8052 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8053 mcs_mask = 0x01FF;
8054 break;
8055 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8056 mcs_mask = 0x03FF;
8057 break;
8058 default:
8059 break;
8060 }
8061
8062 return mcs_mask;
8063 }
8064
8065 static void vht_build_mcs_mask(u16 vht_mcs_map,
8066 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8067 {
8068 u8 nss;
8069
8070 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8071 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8072 vht_mcs_map >>= 2;
8073 }
8074 }
8075
8076 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8077 struct nl80211_txrate_vht *txrate,
8078 u16 mcs[NL80211_VHT_NSS_MAX])
8079 {
8080 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8081 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8082 u8 i;
8083
8084 if (!sband->vht_cap.vht_supported)
8085 return false;
8086
8087 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8088
8089 /* Build vht_mcs_mask from VHT capabilities */
8090 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8091
8092 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8093 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8094 mcs[i] = txrate->mcs[i];
8095 else
8096 return false;
8097 }
8098
8099 return true;
8100 }
8101
8102 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8103 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8104 .len = NL80211_MAX_SUPP_RATES },
8105 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8106 .len = NL80211_MAX_SUPP_HT_RATES },
8107 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8108 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8109 };
8110
8111 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8112 struct genl_info *info)
8113 {
8114 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8115 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8116 struct cfg80211_bitrate_mask mask;
8117 int rem, i;
8118 struct net_device *dev = info->user_ptr[1];
8119 struct nlattr *tx_rates;
8120 struct ieee80211_supported_band *sband;
8121 u16 vht_tx_mcs_map;
8122
8123 if (!rdev->ops->set_bitrate_mask)
8124 return -EOPNOTSUPP;
8125
8126 memset(&mask, 0, sizeof(mask));
8127 /* Default to all rates enabled */
8128 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8129 sband = rdev->wiphy.bands[i];
8130
8131 if (!sband)
8132 continue;
8133
8134 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8135 memcpy(mask.control[i].ht_mcs,
8136 sband->ht_cap.mcs.rx_mask,
8137 sizeof(mask.control[i].ht_mcs));
8138
8139 if (!sband->vht_cap.vht_supported)
8140 continue;
8141
8142 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8143 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8144 }
8145
8146 /* if no rates are given set it back to the defaults */
8147 if (!info->attrs[NL80211_ATTR_TX_RATES])
8148 goto out;
8149
8150 /*
8151 * The nested attribute uses enum nl80211_band as the index. This maps
8152 * directly to the enum ieee80211_band values used in cfg80211.
8153 */
8154 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8155 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8156 enum ieee80211_band band = nla_type(tx_rates);
8157 int err;
8158
8159 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8160 return -EINVAL;
8161 sband = rdev->wiphy.bands[band];
8162 if (sband == NULL)
8163 return -EINVAL;
8164 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8165 nla_len(tx_rates), nl80211_txattr_policy);
8166 if (err)
8167 return err;
8168 if (tb[NL80211_TXRATE_LEGACY]) {
8169 mask.control[band].legacy = rateset_to_mask(
8170 sband,
8171 nla_data(tb[NL80211_TXRATE_LEGACY]),
8172 nla_len(tb[NL80211_TXRATE_LEGACY]));
8173 if ((mask.control[band].legacy == 0) &&
8174 nla_len(tb[NL80211_TXRATE_LEGACY]))
8175 return -EINVAL;
8176 }
8177 if (tb[NL80211_TXRATE_HT]) {
8178 if (!ht_rateset_to_mask(
8179 sband,
8180 nla_data(tb[NL80211_TXRATE_HT]),
8181 nla_len(tb[NL80211_TXRATE_HT]),
8182 mask.control[band].ht_mcs))
8183 return -EINVAL;
8184 }
8185 if (tb[NL80211_TXRATE_VHT]) {
8186 if (!vht_set_mcs_mask(
8187 sband,
8188 nla_data(tb[NL80211_TXRATE_VHT]),
8189 mask.control[band].vht_mcs))
8190 return -EINVAL;
8191 }
8192 if (tb[NL80211_TXRATE_GI]) {
8193 mask.control[band].gi =
8194 nla_get_u8(tb[NL80211_TXRATE_GI]);
8195 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8196 return -EINVAL;
8197 }
8198
8199 if (mask.control[band].legacy == 0) {
8200 /* don't allow empty legacy rates if HT or VHT
8201 * are not even supported.
8202 */
8203 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8204 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8205 return -EINVAL;
8206
8207 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8208 if (mask.control[band].ht_mcs[i])
8209 goto out;
8210
8211 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8212 if (mask.control[band].vht_mcs[i])
8213 goto out;
8214
8215 /* legacy and mcs rates may not be both empty */
8216 return -EINVAL;
8217 }
8218 }
8219
8220 out:
8221 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8222 }
8223
8224 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8225 {
8226 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8227 struct wireless_dev *wdev = info->user_ptr[1];
8228 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8229
8230 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8231 return -EINVAL;
8232
8233 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8234 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8235
8236 switch (wdev->iftype) {
8237 case NL80211_IFTYPE_STATION:
8238 case NL80211_IFTYPE_ADHOC:
8239 case NL80211_IFTYPE_P2P_CLIENT:
8240 case NL80211_IFTYPE_AP:
8241 case NL80211_IFTYPE_AP_VLAN:
8242 case NL80211_IFTYPE_MESH_POINT:
8243 case NL80211_IFTYPE_P2P_GO:
8244 case NL80211_IFTYPE_P2P_DEVICE:
8245 break;
8246 default:
8247 return -EOPNOTSUPP;
8248 }
8249
8250 /* not much point in registering if we can't reply */
8251 if (!rdev->ops->mgmt_tx)
8252 return -EOPNOTSUPP;
8253
8254 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8255 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8256 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8257 }
8258
8259 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8260 {
8261 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8262 struct wireless_dev *wdev = info->user_ptr[1];
8263 struct cfg80211_chan_def chandef;
8264 int err;
8265 void *hdr = NULL;
8266 u64 cookie;
8267 struct sk_buff *msg = NULL;
8268 struct cfg80211_mgmt_tx_params params = {
8269 .dont_wait_for_ack =
8270 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8271 };
8272
8273 if (!info->attrs[NL80211_ATTR_FRAME])
8274 return -EINVAL;
8275
8276 if (!rdev->ops->mgmt_tx)
8277 return -EOPNOTSUPP;
8278
8279 switch (wdev->iftype) {
8280 case NL80211_IFTYPE_P2P_DEVICE:
8281 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8282 return -EINVAL;
8283 case NL80211_IFTYPE_STATION:
8284 case NL80211_IFTYPE_ADHOC:
8285 case NL80211_IFTYPE_P2P_CLIENT:
8286 case NL80211_IFTYPE_AP:
8287 case NL80211_IFTYPE_AP_VLAN:
8288 case NL80211_IFTYPE_MESH_POINT:
8289 case NL80211_IFTYPE_P2P_GO:
8290 break;
8291 default:
8292 return -EOPNOTSUPP;
8293 }
8294
8295 if (info->attrs[NL80211_ATTR_DURATION]) {
8296 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8297 return -EINVAL;
8298 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8299
8300 /*
8301 * We should wait on the channel for at least a minimum amount
8302 * of time (10ms) but no longer than the driver supports.
8303 */
8304 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8305 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8306 return -EINVAL;
8307
8308 }
8309
8310 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8311
8312 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8313 return -EINVAL;
8314
8315 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8316
8317 /* get the channel if any has been specified, otherwise pass NULL to
8318 * the driver. The latter will use the current one
8319 */
8320 chandef.chan = NULL;
8321 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8322 err = nl80211_parse_chandef(rdev, info, &chandef);
8323 if (err)
8324 return err;
8325 }
8326
8327 if (!chandef.chan && params.offchan)
8328 return -EINVAL;
8329
8330 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8331 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8332
8333 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8334 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8335 int i;
8336
8337 if (len % sizeof(u16))
8338 return -EINVAL;
8339
8340 params.n_csa_offsets = len / sizeof(u16);
8341 params.csa_offsets =
8342 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8343
8344 /* check that all the offsets fit the frame */
8345 for (i = 0; i < params.n_csa_offsets; i++) {
8346 if (params.csa_offsets[i] >= params.len)
8347 return -EINVAL;
8348 }
8349 }
8350
8351 if (!params.dont_wait_for_ack) {
8352 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8353 if (!msg)
8354 return -ENOMEM;
8355
8356 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8357 NL80211_CMD_FRAME);
8358 if (!hdr) {
8359 err = -ENOBUFS;
8360 goto free_msg;
8361 }
8362 }
8363
8364 params.chan = chandef.chan;
8365 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8366 if (err)
8367 goto free_msg;
8368
8369 if (msg) {
8370 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8371 goto nla_put_failure;
8372
8373 genlmsg_end(msg, hdr);
8374 return genlmsg_reply(msg, info);
8375 }
8376
8377 return 0;
8378
8379 nla_put_failure:
8380 err = -ENOBUFS;
8381 free_msg:
8382 nlmsg_free(msg);
8383 return err;
8384 }
8385
8386 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8387 {
8388 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8389 struct wireless_dev *wdev = info->user_ptr[1];
8390 u64 cookie;
8391
8392 if (!info->attrs[NL80211_ATTR_COOKIE])
8393 return -EINVAL;
8394
8395 if (!rdev->ops->mgmt_tx_cancel_wait)
8396 return -EOPNOTSUPP;
8397
8398 switch (wdev->iftype) {
8399 case NL80211_IFTYPE_STATION:
8400 case NL80211_IFTYPE_ADHOC:
8401 case NL80211_IFTYPE_P2P_CLIENT:
8402 case NL80211_IFTYPE_AP:
8403 case NL80211_IFTYPE_AP_VLAN:
8404 case NL80211_IFTYPE_P2P_GO:
8405 case NL80211_IFTYPE_P2P_DEVICE:
8406 break;
8407 default:
8408 return -EOPNOTSUPP;
8409 }
8410
8411 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8412
8413 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8414 }
8415
8416 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8417 {
8418 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8419 struct wireless_dev *wdev;
8420 struct net_device *dev = info->user_ptr[1];
8421 u8 ps_state;
8422 bool state;
8423 int err;
8424
8425 if (!info->attrs[NL80211_ATTR_PS_STATE])
8426 return -EINVAL;
8427
8428 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8429
8430 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8431 return -EINVAL;
8432
8433 wdev = dev->ieee80211_ptr;
8434
8435 if (!rdev->ops->set_power_mgmt)
8436 return -EOPNOTSUPP;
8437
8438 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8439
8440 if (state == wdev->ps)
8441 return 0;
8442
8443 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8444 if (!err)
8445 wdev->ps = state;
8446 return err;
8447 }
8448
8449 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8450 {
8451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8452 enum nl80211_ps_state ps_state;
8453 struct wireless_dev *wdev;
8454 struct net_device *dev = info->user_ptr[1];
8455 struct sk_buff *msg;
8456 void *hdr;
8457 int err;
8458
8459 wdev = dev->ieee80211_ptr;
8460
8461 if (!rdev->ops->set_power_mgmt)
8462 return -EOPNOTSUPP;
8463
8464 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8465 if (!msg)
8466 return -ENOMEM;
8467
8468 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8469 NL80211_CMD_GET_POWER_SAVE);
8470 if (!hdr) {
8471 err = -ENOBUFS;
8472 goto free_msg;
8473 }
8474
8475 if (wdev->ps)
8476 ps_state = NL80211_PS_ENABLED;
8477 else
8478 ps_state = NL80211_PS_DISABLED;
8479
8480 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8481 goto nla_put_failure;
8482
8483 genlmsg_end(msg, hdr);
8484 return genlmsg_reply(msg, info);
8485
8486 nla_put_failure:
8487 err = -ENOBUFS;
8488 free_msg:
8489 nlmsg_free(msg);
8490 return err;
8491 }
8492
8493 static const struct nla_policy
8494 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8495 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8496 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8497 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8498 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8499 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8500 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8501 };
8502
8503 static int nl80211_set_cqm_txe(struct genl_info *info,
8504 u32 rate, u32 pkts, u32 intvl)
8505 {
8506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8507 struct net_device *dev = info->user_ptr[1];
8508 struct wireless_dev *wdev = dev->ieee80211_ptr;
8509
8510 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8511 return -EINVAL;
8512
8513 if (!rdev->ops->set_cqm_txe_config)
8514 return -EOPNOTSUPP;
8515
8516 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8517 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8518 return -EOPNOTSUPP;
8519
8520 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8521 }
8522
8523 static int nl80211_set_cqm_rssi(struct genl_info *info,
8524 s32 threshold, u32 hysteresis)
8525 {
8526 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8527 struct net_device *dev = info->user_ptr[1];
8528 struct wireless_dev *wdev = dev->ieee80211_ptr;
8529
8530 if (threshold > 0)
8531 return -EINVAL;
8532
8533 /* disabling - hysteresis should also be zero then */
8534 if (threshold == 0)
8535 hysteresis = 0;
8536
8537 if (!rdev->ops->set_cqm_rssi_config)
8538 return -EOPNOTSUPP;
8539
8540 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8541 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8542 return -EOPNOTSUPP;
8543
8544 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8545 }
8546
8547 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8548 {
8549 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8550 struct nlattr *cqm;
8551 int err;
8552
8553 cqm = info->attrs[NL80211_ATTR_CQM];
8554 if (!cqm)
8555 return -EINVAL;
8556
8557 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8558 nl80211_attr_cqm_policy);
8559 if (err)
8560 return err;
8561
8562 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8563 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8564 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8565 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8566
8567 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8568 }
8569
8570 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8571 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8572 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8573 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8574 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8575 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8576
8577 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8578 }
8579
8580 return -EINVAL;
8581 }
8582
8583 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8584 {
8585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8586 struct net_device *dev = info->user_ptr[1];
8587 struct ocb_setup setup = {};
8588 int err;
8589
8590 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8591 if (err)
8592 return err;
8593
8594 return cfg80211_join_ocb(rdev, dev, &setup);
8595 }
8596
8597 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8598 {
8599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8600 struct net_device *dev = info->user_ptr[1];
8601
8602 return cfg80211_leave_ocb(rdev, dev);
8603 }
8604
8605 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8606 {
8607 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8608 struct net_device *dev = info->user_ptr[1];
8609 struct mesh_config cfg;
8610 struct mesh_setup setup;
8611 int err;
8612
8613 /* start with default */
8614 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8615 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8616
8617 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8618 /* and parse parameters if given */
8619 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8620 if (err)
8621 return err;
8622 }
8623
8624 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8625 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8626 return -EINVAL;
8627
8628 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8629 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8630
8631 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8632 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8633 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8634 return -EINVAL;
8635
8636 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8637 setup.beacon_interval =
8638 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8639 if (setup.beacon_interval < 10 ||
8640 setup.beacon_interval > 10000)
8641 return -EINVAL;
8642 }
8643
8644 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8645 setup.dtim_period =
8646 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8647 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8648 return -EINVAL;
8649 }
8650
8651 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8652 /* parse additional setup parameters if given */
8653 err = nl80211_parse_mesh_setup(info, &setup);
8654 if (err)
8655 return err;
8656 }
8657
8658 if (setup.user_mpm)
8659 cfg.auto_open_plinks = false;
8660
8661 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8662 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8663 if (err)
8664 return err;
8665 } else {
8666 /* cfg80211_join_mesh() will sort it out */
8667 setup.chandef.chan = NULL;
8668 }
8669
8670 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8671 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8672 int n_rates =
8673 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8674 struct ieee80211_supported_band *sband;
8675
8676 if (!setup.chandef.chan)
8677 return -EINVAL;
8678
8679 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8680
8681 err = ieee80211_get_ratemask(sband, rates, n_rates,
8682 &setup.basic_rates);
8683 if (err)
8684 return err;
8685 }
8686
8687 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8688 }
8689
8690 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8691 {
8692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8693 struct net_device *dev = info->user_ptr[1];
8694
8695 return cfg80211_leave_mesh(rdev, dev);
8696 }
8697
8698 #ifdef CONFIG_PM
8699 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8700 struct cfg80211_registered_device *rdev)
8701 {
8702 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8703 struct nlattr *nl_pats, *nl_pat;
8704 int i, pat_len;
8705
8706 if (!wowlan->n_patterns)
8707 return 0;
8708
8709 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8710 if (!nl_pats)
8711 return -ENOBUFS;
8712
8713 for (i = 0; i < wowlan->n_patterns; i++) {
8714 nl_pat = nla_nest_start(msg, i + 1);
8715 if (!nl_pat)
8716 return -ENOBUFS;
8717 pat_len = wowlan->patterns[i].pattern_len;
8718 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8719 wowlan->patterns[i].mask) ||
8720 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8721 wowlan->patterns[i].pattern) ||
8722 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8723 wowlan->patterns[i].pkt_offset))
8724 return -ENOBUFS;
8725 nla_nest_end(msg, nl_pat);
8726 }
8727 nla_nest_end(msg, nl_pats);
8728
8729 return 0;
8730 }
8731
8732 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8733 struct cfg80211_wowlan_tcp *tcp)
8734 {
8735 struct nlattr *nl_tcp;
8736
8737 if (!tcp)
8738 return 0;
8739
8740 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8741 if (!nl_tcp)
8742 return -ENOBUFS;
8743
8744 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8745 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8746 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8747 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8748 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8749 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8750 tcp->payload_len, tcp->payload) ||
8751 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8752 tcp->data_interval) ||
8753 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8754 tcp->wake_len, tcp->wake_data) ||
8755 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8756 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8757 return -ENOBUFS;
8758
8759 if (tcp->payload_seq.len &&
8760 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8761 sizeof(tcp->payload_seq), &tcp->payload_seq))
8762 return -ENOBUFS;
8763
8764 if (tcp->payload_tok.len &&
8765 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8766 sizeof(tcp->payload_tok) + tcp->tokens_size,
8767 &tcp->payload_tok))
8768 return -ENOBUFS;
8769
8770 nla_nest_end(msg, nl_tcp);
8771
8772 return 0;
8773 }
8774
8775 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8776 struct cfg80211_sched_scan_request *req)
8777 {
8778 struct nlattr *nd, *freqs, *matches, *match;
8779 int i;
8780
8781 if (!req)
8782 return 0;
8783
8784 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8785 if (!nd)
8786 return -ENOBUFS;
8787
8788 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8789 return -ENOBUFS;
8790
8791 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8792 if (!freqs)
8793 return -ENOBUFS;
8794
8795 for (i = 0; i < req->n_channels; i++)
8796 nla_put_u32(msg, i, req->channels[i]->center_freq);
8797
8798 nla_nest_end(msg, freqs);
8799
8800 if (req->n_match_sets) {
8801 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8802 for (i = 0; i < req->n_match_sets; i++) {
8803 match = nla_nest_start(msg, i);
8804 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8805 req->match_sets[i].ssid.ssid_len,
8806 req->match_sets[i].ssid.ssid);
8807 nla_nest_end(msg, match);
8808 }
8809 nla_nest_end(msg, matches);
8810 }
8811
8812 nla_nest_end(msg, nd);
8813
8814 return 0;
8815 }
8816
8817 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8818 {
8819 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8820 struct sk_buff *msg;
8821 void *hdr;
8822 u32 size = NLMSG_DEFAULT_SIZE;
8823
8824 if (!rdev->wiphy.wowlan)
8825 return -EOPNOTSUPP;
8826
8827 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8828 /* adjust size to have room for all the data */
8829 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8830 rdev->wiphy.wowlan_config->tcp->payload_len +
8831 rdev->wiphy.wowlan_config->tcp->wake_len +
8832 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8833 }
8834
8835 msg = nlmsg_new(size, GFP_KERNEL);
8836 if (!msg)
8837 return -ENOMEM;
8838
8839 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8840 NL80211_CMD_GET_WOWLAN);
8841 if (!hdr)
8842 goto nla_put_failure;
8843
8844 if (rdev->wiphy.wowlan_config) {
8845 struct nlattr *nl_wowlan;
8846
8847 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8848 if (!nl_wowlan)
8849 goto nla_put_failure;
8850
8851 if ((rdev->wiphy.wowlan_config->any &&
8852 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8853 (rdev->wiphy.wowlan_config->disconnect &&
8854 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8855 (rdev->wiphy.wowlan_config->magic_pkt &&
8856 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8857 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8858 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8859 (rdev->wiphy.wowlan_config->eap_identity_req &&
8860 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8861 (rdev->wiphy.wowlan_config->four_way_handshake &&
8862 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8863 (rdev->wiphy.wowlan_config->rfkill_release &&
8864 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8865 goto nla_put_failure;
8866
8867 if (nl80211_send_wowlan_patterns(msg, rdev))
8868 goto nla_put_failure;
8869
8870 if (nl80211_send_wowlan_tcp(msg,
8871 rdev->wiphy.wowlan_config->tcp))
8872 goto nla_put_failure;
8873
8874 if (nl80211_send_wowlan_nd(
8875 msg,
8876 rdev->wiphy.wowlan_config->nd_config))
8877 goto nla_put_failure;
8878
8879 nla_nest_end(msg, nl_wowlan);
8880 }
8881
8882 genlmsg_end(msg, hdr);
8883 return genlmsg_reply(msg, info);
8884
8885 nla_put_failure:
8886 nlmsg_free(msg);
8887 return -ENOBUFS;
8888 }
8889
8890 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8891 struct nlattr *attr,
8892 struct cfg80211_wowlan *trig)
8893 {
8894 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8895 struct cfg80211_wowlan_tcp *cfg;
8896 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8897 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8898 u32 size;
8899 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8900 int err, port;
8901
8902 if (!rdev->wiphy.wowlan->tcp)
8903 return -EINVAL;
8904
8905 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8906 nla_data(attr), nla_len(attr),
8907 nl80211_wowlan_tcp_policy);
8908 if (err)
8909 return err;
8910
8911 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8912 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8913 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8914 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8915 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8916 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8917 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8918 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8919 return -EINVAL;
8920
8921 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8922 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8923 return -EINVAL;
8924
8925 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8926 rdev->wiphy.wowlan->tcp->data_interval_max ||
8927 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8928 return -EINVAL;
8929
8930 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8931 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8932 return -EINVAL;
8933
8934 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8935 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8936 return -EINVAL;
8937
8938 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8939 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8940
8941 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8942 tokens_size = tokln - sizeof(*tok);
8943
8944 if (!tok->len || tokens_size % tok->len)
8945 return -EINVAL;
8946 if (!rdev->wiphy.wowlan->tcp->tok)
8947 return -EINVAL;
8948 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8949 return -EINVAL;
8950 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8951 return -EINVAL;
8952 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8953 return -EINVAL;
8954 if (tok->offset + tok->len > data_size)
8955 return -EINVAL;
8956 }
8957
8958 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8959 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8960 if (!rdev->wiphy.wowlan->tcp->seq)
8961 return -EINVAL;
8962 if (seq->len == 0 || seq->len > 4)
8963 return -EINVAL;
8964 if (seq->len + seq->offset > data_size)
8965 return -EINVAL;
8966 }
8967
8968 size = sizeof(*cfg);
8969 size += data_size;
8970 size += wake_size + wake_mask_size;
8971 size += tokens_size;
8972
8973 cfg = kzalloc(size, GFP_KERNEL);
8974 if (!cfg)
8975 return -ENOMEM;
8976 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8977 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8978 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8979 ETH_ALEN);
8980 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8981 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8982 else
8983 port = 0;
8984 #ifdef CONFIG_INET
8985 /* allocate a socket and port for it and use it */
8986 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8987 IPPROTO_TCP, &cfg->sock, 1);
8988 if (err) {
8989 kfree(cfg);
8990 return err;
8991 }
8992 if (inet_csk_get_port(cfg->sock->sk, port)) {
8993 sock_release(cfg->sock);
8994 kfree(cfg);
8995 return -EADDRINUSE;
8996 }
8997 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8998 #else
8999 if (!port) {
9000 kfree(cfg);
9001 return -EINVAL;
9002 }
9003 cfg->src_port = port;
9004 #endif
9005
9006 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9007 cfg->payload_len = data_size;
9008 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9009 memcpy((void *)cfg->payload,
9010 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9011 data_size);
9012 if (seq)
9013 cfg->payload_seq = *seq;
9014 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9015 cfg->wake_len = wake_size;
9016 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9017 memcpy((void *)cfg->wake_data,
9018 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9019 wake_size);
9020 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9021 data_size + wake_size;
9022 memcpy((void *)cfg->wake_mask,
9023 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9024 wake_mask_size);
9025 if (tok) {
9026 cfg->tokens_size = tokens_size;
9027 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9028 }
9029
9030 trig->tcp = cfg;
9031
9032 return 0;
9033 }
9034
9035 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9036 const struct wiphy_wowlan_support *wowlan,
9037 struct nlattr *attr,
9038 struct cfg80211_wowlan *trig)
9039 {
9040 struct nlattr **tb;
9041 int err;
9042
9043 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9044 if (!tb)
9045 return -ENOMEM;
9046
9047 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9048 err = -EOPNOTSUPP;
9049 goto out;
9050 }
9051
9052 err = nla_parse(tb, NL80211_ATTR_MAX,
9053 nla_data(attr), nla_len(attr),
9054 nl80211_policy);
9055 if (err)
9056 goto out;
9057
9058 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9059 err = PTR_ERR_OR_ZERO(trig->nd_config);
9060 if (err)
9061 trig->nd_config = NULL;
9062
9063 out:
9064 kfree(tb);
9065 return err;
9066 }
9067
9068 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9069 {
9070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9071 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9072 struct cfg80211_wowlan new_triggers = {};
9073 struct cfg80211_wowlan *ntrig;
9074 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9075 int err, i;
9076 bool prev_enabled = rdev->wiphy.wowlan_config;
9077
9078 if (!wowlan)
9079 return -EOPNOTSUPP;
9080
9081 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9082 cfg80211_rdev_free_wowlan(rdev);
9083 rdev->wiphy.wowlan_config = NULL;
9084 goto set_wakeup;
9085 }
9086
9087 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9088 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9089 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9090 nl80211_wowlan_policy);
9091 if (err)
9092 return err;
9093
9094 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9095 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9096 return -EINVAL;
9097 new_triggers.any = true;
9098 }
9099
9100 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9101 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9102 return -EINVAL;
9103 new_triggers.disconnect = true;
9104 }
9105
9106 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9107 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9108 return -EINVAL;
9109 new_triggers.magic_pkt = true;
9110 }
9111
9112 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9113 return -EINVAL;
9114
9115 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9116 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9117 return -EINVAL;
9118 new_triggers.gtk_rekey_failure = true;
9119 }
9120
9121 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9122 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9123 return -EINVAL;
9124 new_triggers.eap_identity_req = true;
9125 }
9126
9127 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9128 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9129 return -EINVAL;
9130 new_triggers.four_way_handshake = true;
9131 }
9132
9133 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9134 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9135 return -EINVAL;
9136 new_triggers.rfkill_release = true;
9137 }
9138
9139 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9140 struct nlattr *pat;
9141 int n_patterns = 0;
9142 int rem, pat_len, mask_len, pkt_offset;
9143 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9144
9145 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9146 rem)
9147 n_patterns++;
9148 if (n_patterns > wowlan->n_patterns)
9149 return -EINVAL;
9150
9151 new_triggers.patterns = kcalloc(n_patterns,
9152 sizeof(new_triggers.patterns[0]),
9153 GFP_KERNEL);
9154 if (!new_triggers.patterns)
9155 return -ENOMEM;
9156
9157 new_triggers.n_patterns = n_patterns;
9158 i = 0;
9159
9160 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9161 rem) {
9162 u8 *mask_pat;
9163
9164 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9165 nla_len(pat), NULL);
9166 err = -EINVAL;
9167 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9168 !pat_tb[NL80211_PKTPAT_PATTERN])
9169 goto error;
9170 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9171 mask_len = DIV_ROUND_UP(pat_len, 8);
9172 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9173 goto error;
9174 if (pat_len > wowlan->pattern_max_len ||
9175 pat_len < wowlan->pattern_min_len)
9176 goto error;
9177
9178 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9179 pkt_offset = 0;
9180 else
9181 pkt_offset = nla_get_u32(
9182 pat_tb[NL80211_PKTPAT_OFFSET]);
9183 if (pkt_offset > wowlan->max_pkt_offset)
9184 goto error;
9185 new_triggers.patterns[i].pkt_offset = pkt_offset;
9186
9187 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9188 if (!mask_pat) {
9189 err = -ENOMEM;
9190 goto error;
9191 }
9192 new_triggers.patterns[i].mask = mask_pat;
9193 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9194 mask_len);
9195 mask_pat += mask_len;
9196 new_triggers.patterns[i].pattern = mask_pat;
9197 new_triggers.patterns[i].pattern_len = pat_len;
9198 memcpy(mask_pat,
9199 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9200 pat_len);
9201 i++;
9202 }
9203 }
9204
9205 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9206 err = nl80211_parse_wowlan_tcp(
9207 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9208 &new_triggers);
9209 if (err)
9210 goto error;
9211 }
9212
9213 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9214 err = nl80211_parse_wowlan_nd(
9215 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9216 &new_triggers);
9217 if (err)
9218 goto error;
9219 }
9220
9221 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9222 if (!ntrig) {
9223 err = -ENOMEM;
9224 goto error;
9225 }
9226 cfg80211_rdev_free_wowlan(rdev);
9227 rdev->wiphy.wowlan_config = ntrig;
9228
9229 set_wakeup:
9230 if (rdev->ops->set_wakeup &&
9231 prev_enabled != !!rdev->wiphy.wowlan_config)
9232 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9233
9234 return 0;
9235 error:
9236 for (i = 0; i < new_triggers.n_patterns; i++)
9237 kfree(new_triggers.patterns[i].mask);
9238 kfree(new_triggers.patterns);
9239 if (new_triggers.tcp && new_triggers.tcp->sock)
9240 sock_release(new_triggers.tcp->sock);
9241 kfree(new_triggers.tcp);
9242 return err;
9243 }
9244 #endif
9245
9246 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9247 struct cfg80211_registered_device *rdev)
9248 {
9249 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9250 int i, j, pat_len;
9251 struct cfg80211_coalesce_rules *rule;
9252
9253 if (!rdev->coalesce->n_rules)
9254 return 0;
9255
9256 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9257 if (!nl_rules)
9258 return -ENOBUFS;
9259
9260 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9261 nl_rule = nla_nest_start(msg, i + 1);
9262 if (!nl_rule)
9263 return -ENOBUFS;
9264
9265 rule = &rdev->coalesce->rules[i];
9266 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9267 rule->delay))
9268 return -ENOBUFS;
9269
9270 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9271 rule->condition))
9272 return -ENOBUFS;
9273
9274 nl_pats = nla_nest_start(msg,
9275 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9276 if (!nl_pats)
9277 return -ENOBUFS;
9278
9279 for (j = 0; j < rule->n_patterns; j++) {
9280 nl_pat = nla_nest_start(msg, j + 1);
9281 if (!nl_pat)
9282 return -ENOBUFS;
9283 pat_len = rule->patterns[j].pattern_len;
9284 if (nla_put(msg, NL80211_PKTPAT_MASK,
9285 DIV_ROUND_UP(pat_len, 8),
9286 rule->patterns[j].mask) ||
9287 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9288 rule->patterns[j].pattern) ||
9289 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9290 rule->patterns[j].pkt_offset))
9291 return -ENOBUFS;
9292 nla_nest_end(msg, nl_pat);
9293 }
9294 nla_nest_end(msg, nl_pats);
9295 nla_nest_end(msg, nl_rule);
9296 }
9297 nla_nest_end(msg, nl_rules);
9298
9299 return 0;
9300 }
9301
9302 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9303 {
9304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9305 struct sk_buff *msg;
9306 void *hdr;
9307
9308 if (!rdev->wiphy.coalesce)
9309 return -EOPNOTSUPP;
9310
9311 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9312 if (!msg)
9313 return -ENOMEM;
9314
9315 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9316 NL80211_CMD_GET_COALESCE);
9317 if (!hdr)
9318 goto nla_put_failure;
9319
9320 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9321 goto nla_put_failure;
9322
9323 genlmsg_end(msg, hdr);
9324 return genlmsg_reply(msg, info);
9325
9326 nla_put_failure:
9327 nlmsg_free(msg);
9328 return -ENOBUFS;
9329 }
9330
9331 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9332 {
9333 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9334 int i, j;
9335 struct cfg80211_coalesce_rules *rule;
9336
9337 if (!coalesce)
9338 return;
9339
9340 for (i = 0; i < coalesce->n_rules; i++) {
9341 rule = &coalesce->rules[i];
9342 for (j = 0; j < rule->n_patterns; j++)
9343 kfree(rule->patterns[j].mask);
9344 kfree(rule->patterns);
9345 }
9346 kfree(coalesce->rules);
9347 kfree(coalesce);
9348 rdev->coalesce = NULL;
9349 }
9350
9351 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9352 struct nlattr *rule,
9353 struct cfg80211_coalesce_rules *new_rule)
9354 {
9355 int err, i;
9356 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9357 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9358 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9359 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9360
9361 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9362 nla_len(rule), nl80211_coalesce_policy);
9363 if (err)
9364 return err;
9365
9366 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9367 new_rule->delay =
9368 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9369 if (new_rule->delay > coalesce->max_delay)
9370 return -EINVAL;
9371
9372 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9373 new_rule->condition =
9374 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9375 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9376 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9377 return -EINVAL;
9378
9379 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9380 return -EINVAL;
9381
9382 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9383 rem)
9384 n_patterns++;
9385 if (n_patterns > coalesce->n_patterns)
9386 return -EINVAL;
9387
9388 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9389 GFP_KERNEL);
9390 if (!new_rule->patterns)
9391 return -ENOMEM;
9392
9393 new_rule->n_patterns = n_patterns;
9394 i = 0;
9395
9396 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9397 rem) {
9398 u8 *mask_pat;
9399
9400 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9401 nla_len(pat), NULL);
9402 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9403 !pat_tb[NL80211_PKTPAT_PATTERN])
9404 return -EINVAL;
9405 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9406 mask_len = DIV_ROUND_UP(pat_len, 8);
9407 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9408 return -EINVAL;
9409 if (pat_len > coalesce->pattern_max_len ||
9410 pat_len < coalesce->pattern_min_len)
9411 return -EINVAL;
9412
9413 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9414 pkt_offset = 0;
9415 else
9416 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9417 if (pkt_offset > coalesce->max_pkt_offset)
9418 return -EINVAL;
9419 new_rule->patterns[i].pkt_offset = pkt_offset;
9420
9421 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9422 if (!mask_pat)
9423 return -ENOMEM;
9424
9425 new_rule->patterns[i].mask = mask_pat;
9426 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9427 mask_len);
9428
9429 mask_pat += mask_len;
9430 new_rule->patterns[i].pattern = mask_pat;
9431 new_rule->patterns[i].pattern_len = pat_len;
9432 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9433 pat_len);
9434 i++;
9435 }
9436
9437 return 0;
9438 }
9439
9440 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9441 {
9442 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9443 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9444 struct cfg80211_coalesce new_coalesce = {};
9445 struct cfg80211_coalesce *n_coalesce;
9446 int err, rem_rule, n_rules = 0, i, j;
9447 struct nlattr *rule;
9448 struct cfg80211_coalesce_rules *tmp_rule;
9449
9450 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9451 return -EOPNOTSUPP;
9452
9453 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9454 cfg80211_rdev_free_coalesce(rdev);
9455 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9456 return 0;
9457 }
9458
9459 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9460 rem_rule)
9461 n_rules++;
9462 if (n_rules > coalesce->n_rules)
9463 return -EINVAL;
9464
9465 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9466 GFP_KERNEL);
9467 if (!new_coalesce.rules)
9468 return -ENOMEM;
9469
9470 new_coalesce.n_rules = n_rules;
9471 i = 0;
9472
9473 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9474 rem_rule) {
9475 err = nl80211_parse_coalesce_rule(rdev, rule,
9476 &new_coalesce.rules[i]);
9477 if (err)
9478 goto error;
9479
9480 i++;
9481 }
9482
9483 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9484 if (err)
9485 goto error;
9486
9487 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9488 if (!n_coalesce) {
9489 err = -ENOMEM;
9490 goto error;
9491 }
9492 cfg80211_rdev_free_coalesce(rdev);
9493 rdev->coalesce = n_coalesce;
9494
9495 return 0;
9496 error:
9497 for (i = 0; i < new_coalesce.n_rules; i++) {
9498 tmp_rule = &new_coalesce.rules[i];
9499 for (j = 0; j < tmp_rule->n_patterns; j++)
9500 kfree(tmp_rule->patterns[j].mask);
9501 kfree(tmp_rule->patterns);
9502 }
9503 kfree(new_coalesce.rules);
9504
9505 return err;
9506 }
9507
9508 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9509 {
9510 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9511 struct net_device *dev = info->user_ptr[1];
9512 struct wireless_dev *wdev = dev->ieee80211_ptr;
9513 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9514 struct cfg80211_gtk_rekey_data rekey_data;
9515 int err;
9516
9517 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9518 return -EINVAL;
9519
9520 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9521 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9522 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9523 nl80211_rekey_policy);
9524 if (err)
9525 return err;
9526
9527 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9528 return -ERANGE;
9529 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9530 return -ERANGE;
9531 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9532 return -ERANGE;
9533
9534 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9535 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9536 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9537
9538 wdev_lock(wdev);
9539 if (!wdev->current_bss) {
9540 err = -ENOTCONN;
9541 goto out;
9542 }
9543
9544 if (!rdev->ops->set_rekey_data) {
9545 err = -EOPNOTSUPP;
9546 goto out;
9547 }
9548
9549 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9550 out:
9551 wdev_unlock(wdev);
9552 return err;
9553 }
9554
9555 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9556 struct genl_info *info)
9557 {
9558 struct net_device *dev = info->user_ptr[1];
9559 struct wireless_dev *wdev = dev->ieee80211_ptr;
9560
9561 if (wdev->iftype != NL80211_IFTYPE_AP &&
9562 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9563 return -EINVAL;
9564
9565 if (wdev->ap_unexpected_nlportid)
9566 return -EBUSY;
9567
9568 wdev->ap_unexpected_nlportid = info->snd_portid;
9569 return 0;
9570 }
9571
9572 static int nl80211_probe_client(struct sk_buff *skb,
9573 struct genl_info *info)
9574 {
9575 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9576 struct net_device *dev = info->user_ptr[1];
9577 struct wireless_dev *wdev = dev->ieee80211_ptr;
9578 struct sk_buff *msg;
9579 void *hdr;
9580 const u8 *addr;
9581 u64 cookie;
9582 int err;
9583
9584 if (wdev->iftype != NL80211_IFTYPE_AP &&
9585 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9586 return -EOPNOTSUPP;
9587
9588 if (!info->attrs[NL80211_ATTR_MAC])
9589 return -EINVAL;
9590
9591 if (!rdev->ops->probe_client)
9592 return -EOPNOTSUPP;
9593
9594 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9595 if (!msg)
9596 return -ENOMEM;
9597
9598 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9599 NL80211_CMD_PROBE_CLIENT);
9600 if (!hdr) {
9601 err = -ENOBUFS;
9602 goto free_msg;
9603 }
9604
9605 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9606
9607 err = rdev_probe_client(rdev, dev, addr, &cookie);
9608 if (err)
9609 goto free_msg;
9610
9611 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9612 goto nla_put_failure;
9613
9614 genlmsg_end(msg, hdr);
9615
9616 return genlmsg_reply(msg, info);
9617
9618 nla_put_failure:
9619 err = -ENOBUFS;
9620 free_msg:
9621 nlmsg_free(msg);
9622 return err;
9623 }
9624
9625 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9626 {
9627 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9628 struct cfg80211_beacon_registration *reg, *nreg;
9629 int rv;
9630
9631 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9632 return -EOPNOTSUPP;
9633
9634 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9635 if (!nreg)
9636 return -ENOMEM;
9637
9638 /* First, check if already registered. */
9639 spin_lock_bh(&rdev->beacon_registrations_lock);
9640 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9641 if (reg->nlportid == info->snd_portid) {
9642 rv = -EALREADY;
9643 goto out_err;
9644 }
9645 }
9646 /* Add it to the list */
9647 nreg->nlportid = info->snd_portid;
9648 list_add(&nreg->list, &rdev->beacon_registrations);
9649
9650 spin_unlock_bh(&rdev->beacon_registrations_lock);
9651
9652 return 0;
9653 out_err:
9654 spin_unlock_bh(&rdev->beacon_registrations_lock);
9655 kfree(nreg);
9656 return rv;
9657 }
9658
9659 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9660 {
9661 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9662 struct wireless_dev *wdev = info->user_ptr[1];
9663 int err;
9664
9665 if (!rdev->ops->start_p2p_device)
9666 return -EOPNOTSUPP;
9667
9668 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9669 return -EOPNOTSUPP;
9670
9671 if (wdev->p2p_started)
9672 return 0;
9673
9674 if (rfkill_blocked(rdev->rfkill))
9675 return -ERFKILL;
9676
9677 err = rdev_start_p2p_device(rdev, wdev);
9678 if (err)
9679 return err;
9680
9681 wdev->p2p_started = true;
9682 rdev->opencount++;
9683
9684 return 0;
9685 }
9686
9687 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9688 {
9689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9690 struct wireless_dev *wdev = info->user_ptr[1];
9691
9692 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9693 return -EOPNOTSUPP;
9694
9695 if (!rdev->ops->stop_p2p_device)
9696 return -EOPNOTSUPP;
9697
9698 cfg80211_stop_p2p_device(rdev, wdev);
9699
9700 return 0;
9701 }
9702
9703 static int nl80211_get_protocol_features(struct sk_buff *skb,
9704 struct genl_info *info)
9705 {
9706 void *hdr;
9707 struct sk_buff *msg;
9708
9709 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9710 if (!msg)
9711 return -ENOMEM;
9712
9713 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9714 NL80211_CMD_GET_PROTOCOL_FEATURES);
9715 if (!hdr)
9716 goto nla_put_failure;
9717
9718 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9719 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9720 goto nla_put_failure;
9721
9722 genlmsg_end(msg, hdr);
9723 return genlmsg_reply(msg, info);
9724
9725 nla_put_failure:
9726 kfree_skb(msg);
9727 return -ENOBUFS;
9728 }
9729
9730 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9731 {
9732 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9733 struct cfg80211_update_ft_ies_params ft_params;
9734 struct net_device *dev = info->user_ptr[1];
9735
9736 if (!rdev->ops->update_ft_ies)
9737 return -EOPNOTSUPP;
9738
9739 if (!info->attrs[NL80211_ATTR_MDID] ||
9740 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9741 return -EINVAL;
9742
9743 memset(&ft_params, 0, sizeof(ft_params));
9744 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9745 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9746 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9747
9748 return rdev_update_ft_ies(rdev, dev, &ft_params);
9749 }
9750
9751 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9752 struct genl_info *info)
9753 {
9754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9755 struct wireless_dev *wdev = info->user_ptr[1];
9756 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9757 u16 duration;
9758 int ret;
9759
9760 if (!rdev->ops->crit_proto_start)
9761 return -EOPNOTSUPP;
9762
9763 if (WARN_ON(!rdev->ops->crit_proto_stop))
9764 return -EINVAL;
9765
9766 if (rdev->crit_proto_nlportid)
9767 return -EBUSY;
9768
9769 /* determine protocol if provided */
9770 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9771 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9772
9773 if (proto >= NUM_NL80211_CRIT_PROTO)
9774 return -EINVAL;
9775
9776 /* timeout must be provided */
9777 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9778 return -EINVAL;
9779
9780 duration =
9781 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9782
9783 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9784 return -ERANGE;
9785
9786 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9787 if (!ret)
9788 rdev->crit_proto_nlportid = info->snd_portid;
9789
9790 return ret;
9791 }
9792
9793 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9794 struct genl_info *info)
9795 {
9796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9797 struct wireless_dev *wdev = info->user_ptr[1];
9798
9799 if (!rdev->ops->crit_proto_stop)
9800 return -EOPNOTSUPP;
9801
9802 if (rdev->crit_proto_nlportid) {
9803 rdev->crit_proto_nlportid = 0;
9804 rdev_crit_proto_stop(rdev, wdev);
9805 }
9806 return 0;
9807 }
9808
9809 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9810 {
9811 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9812 struct wireless_dev *wdev =
9813 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9814 int i, err;
9815 u32 vid, subcmd;
9816
9817 if (!rdev->wiphy.vendor_commands)
9818 return -EOPNOTSUPP;
9819
9820 if (IS_ERR(wdev)) {
9821 err = PTR_ERR(wdev);
9822 if (err != -EINVAL)
9823 return err;
9824 wdev = NULL;
9825 } else if (wdev->wiphy != &rdev->wiphy) {
9826 return -EINVAL;
9827 }
9828
9829 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9830 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9831 return -EINVAL;
9832
9833 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9834 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9835 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9836 const struct wiphy_vendor_command *vcmd;
9837 void *data = NULL;
9838 int len = 0;
9839
9840 vcmd = &rdev->wiphy.vendor_commands[i];
9841
9842 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9843 continue;
9844
9845 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9846 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9847 if (!wdev)
9848 return -EINVAL;
9849 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9850 !wdev->netdev)
9851 return -EINVAL;
9852
9853 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9854 if (wdev->netdev &&
9855 !netif_running(wdev->netdev))
9856 return -ENETDOWN;
9857 if (!wdev->netdev && !wdev->p2p_started)
9858 return -ENETDOWN;
9859 }
9860 } else {
9861 wdev = NULL;
9862 }
9863
9864 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9865 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9866 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9867 }
9868
9869 rdev->cur_cmd_info = info;
9870 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9871 data, len);
9872 rdev->cur_cmd_info = NULL;
9873 return err;
9874 }
9875
9876 return -EOPNOTSUPP;
9877 }
9878
9879 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9880 enum nl80211_commands cmd,
9881 enum nl80211_attrs attr,
9882 int approxlen)
9883 {
9884 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9885
9886 if (WARN_ON(!rdev->cur_cmd_info))
9887 return NULL;
9888
9889 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9890 rdev->cur_cmd_info->snd_portid,
9891 rdev->cur_cmd_info->snd_seq,
9892 cmd, attr, NULL, GFP_KERNEL);
9893 }
9894 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9895
9896 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9897 {
9898 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9899 void *hdr = ((void **)skb->cb)[1];
9900 struct nlattr *data = ((void **)skb->cb)[2];
9901
9902 /* clear CB data for netlink core to own from now on */
9903 memset(skb->cb, 0, sizeof(skb->cb));
9904
9905 if (WARN_ON(!rdev->cur_cmd_info)) {
9906 kfree_skb(skb);
9907 return -EINVAL;
9908 }
9909
9910 nla_nest_end(skb, data);
9911 genlmsg_end(skb, hdr);
9912 return genlmsg_reply(skb, rdev->cur_cmd_info);
9913 }
9914 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9915
9916
9917 static int nl80211_set_qos_map(struct sk_buff *skb,
9918 struct genl_info *info)
9919 {
9920 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9921 struct cfg80211_qos_map *qos_map = NULL;
9922 struct net_device *dev = info->user_ptr[1];
9923 u8 *pos, len, num_des, des_len, des;
9924 int ret;
9925
9926 if (!rdev->ops->set_qos_map)
9927 return -EOPNOTSUPP;
9928
9929 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9930 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9931 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9932
9933 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9934 len > IEEE80211_QOS_MAP_LEN_MAX)
9935 return -EINVAL;
9936
9937 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9938 if (!qos_map)
9939 return -ENOMEM;
9940
9941 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9942 if (num_des) {
9943 des_len = num_des *
9944 sizeof(struct cfg80211_dscp_exception);
9945 memcpy(qos_map->dscp_exception, pos, des_len);
9946 qos_map->num_des = num_des;
9947 for (des = 0; des < num_des; des++) {
9948 if (qos_map->dscp_exception[des].up > 7) {
9949 kfree(qos_map);
9950 return -EINVAL;
9951 }
9952 }
9953 pos += des_len;
9954 }
9955 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9956 }
9957
9958 wdev_lock(dev->ieee80211_ptr);
9959 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9960 if (!ret)
9961 ret = rdev_set_qos_map(rdev, dev, qos_map);
9962 wdev_unlock(dev->ieee80211_ptr);
9963
9964 kfree(qos_map);
9965 return ret;
9966 }
9967
9968 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9969 {
9970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9971 struct net_device *dev = info->user_ptr[1];
9972 struct wireless_dev *wdev = dev->ieee80211_ptr;
9973 const u8 *peer;
9974 u8 tsid, up;
9975 u16 admitted_time = 0;
9976 int err;
9977
9978 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9979 return -EOPNOTSUPP;
9980
9981 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9982 !info->attrs[NL80211_ATTR_USER_PRIO])
9983 return -EINVAL;
9984
9985 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9986 if (tsid >= IEEE80211_NUM_TIDS)
9987 return -EINVAL;
9988
9989 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9990 if (up >= IEEE80211_NUM_UPS)
9991 return -EINVAL;
9992
9993 /* WMM uses TIDs 0-7 even for TSPEC */
9994 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9995 /* TODO: handle 802.11 TSPEC/admission control
9996 * need more attributes for that (e.g. BA session requirement);
9997 * change the WMM adminssion test above to allow both then
9998 */
9999 return -EINVAL;
10000 }
10001
10002 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10003
10004 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10005 admitted_time =
10006 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10007 if (!admitted_time)
10008 return -EINVAL;
10009 }
10010
10011 wdev_lock(wdev);
10012 switch (wdev->iftype) {
10013 case NL80211_IFTYPE_STATION:
10014 case NL80211_IFTYPE_P2P_CLIENT:
10015 if (wdev->current_bss)
10016 break;
10017 err = -ENOTCONN;
10018 goto out;
10019 default:
10020 err = -EOPNOTSUPP;
10021 goto out;
10022 }
10023
10024 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10025
10026 out:
10027 wdev_unlock(wdev);
10028 return err;
10029 }
10030
10031 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10032 {
10033 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10034 struct net_device *dev = info->user_ptr[1];
10035 struct wireless_dev *wdev = dev->ieee80211_ptr;
10036 const u8 *peer;
10037 u8 tsid;
10038 int err;
10039
10040 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10041 return -EINVAL;
10042
10043 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10044 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10045
10046 wdev_lock(wdev);
10047 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10048 wdev_unlock(wdev);
10049
10050 return err;
10051 }
10052
10053 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10054 struct genl_info *info)
10055 {
10056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10057 struct net_device *dev = info->user_ptr[1];
10058 struct wireless_dev *wdev = dev->ieee80211_ptr;
10059 struct cfg80211_chan_def chandef = {};
10060 const u8 *addr;
10061 u8 oper_class;
10062 int err;
10063
10064 if (!rdev->ops->tdls_channel_switch ||
10065 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10066 return -EOPNOTSUPP;
10067
10068 switch (dev->ieee80211_ptr->iftype) {
10069 case NL80211_IFTYPE_STATION:
10070 case NL80211_IFTYPE_P2P_CLIENT:
10071 break;
10072 default:
10073 return -EOPNOTSUPP;
10074 }
10075
10076 if (!info->attrs[NL80211_ATTR_MAC] ||
10077 !info->attrs[NL80211_ATTR_OPER_CLASS])
10078 return -EINVAL;
10079
10080 err = nl80211_parse_chandef(rdev, info, &chandef);
10081 if (err)
10082 return err;
10083
10084 /*
10085 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10086 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10087 * specification is not defined for them.
10088 */
10089 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10090 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10091 chandef.width != NL80211_CHAN_WIDTH_20)
10092 return -EINVAL;
10093
10094 /* we will be active on the TDLS link */
10095 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10096 return -EINVAL;
10097
10098 /* don't allow switching to DFS channels */
10099 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10100 return -EINVAL;
10101
10102 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10103 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10104
10105 wdev_lock(wdev);
10106 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10107 wdev_unlock(wdev);
10108
10109 return err;
10110 }
10111
10112 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10113 struct genl_info *info)
10114 {
10115 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10116 struct net_device *dev = info->user_ptr[1];
10117 struct wireless_dev *wdev = dev->ieee80211_ptr;
10118 const u8 *addr;
10119
10120 if (!rdev->ops->tdls_channel_switch ||
10121 !rdev->ops->tdls_cancel_channel_switch ||
10122 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10123 return -EOPNOTSUPP;
10124
10125 switch (dev->ieee80211_ptr->iftype) {
10126 case NL80211_IFTYPE_STATION:
10127 case NL80211_IFTYPE_P2P_CLIENT:
10128 break;
10129 default:
10130 return -EOPNOTSUPP;
10131 }
10132
10133 if (!info->attrs[NL80211_ATTR_MAC])
10134 return -EINVAL;
10135
10136 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10137
10138 wdev_lock(wdev);
10139 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10140 wdev_unlock(wdev);
10141
10142 return 0;
10143 }
10144
10145 #define NL80211_FLAG_NEED_WIPHY 0x01
10146 #define NL80211_FLAG_NEED_NETDEV 0x02
10147 #define NL80211_FLAG_NEED_RTNL 0x04
10148 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10149 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10150 NL80211_FLAG_CHECK_NETDEV_UP)
10151 #define NL80211_FLAG_NEED_WDEV 0x10
10152 /* If a netdev is associated, it must be UP, P2P must be started */
10153 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10154 NL80211_FLAG_CHECK_NETDEV_UP)
10155 #define NL80211_FLAG_CLEAR_SKB 0x20
10156
10157 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10158 struct genl_info *info)
10159 {
10160 struct cfg80211_registered_device *rdev;
10161 struct wireless_dev *wdev;
10162 struct net_device *dev;
10163 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10164
10165 if (rtnl)
10166 rtnl_lock();
10167
10168 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10169 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10170 if (IS_ERR(rdev)) {
10171 if (rtnl)
10172 rtnl_unlock();
10173 return PTR_ERR(rdev);
10174 }
10175 info->user_ptr[0] = rdev;
10176 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10177 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10178 ASSERT_RTNL();
10179
10180 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10181 info->attrs);
10182 if (IS_ERR(wdev)) {
10183 if (rtnl)
10184 rtnl_unlock();
10185 return PTR_ERR(wdev);
10186 }
10187
10188 dev = wdev->netdev;
10189 rdev = wiphy_to_rdev(wdev->wiphy);
10190
10191 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10192 if (!dev) {
10193 if (rtnl)
10194 rtnl_unlock();
10195 return -EINVAL;
10196 }
10197
10198 info->user_ptr[1] = dev;
10199 } else {
10200 info->user_ptr[1] = wdev;
10201 }
10202
10203 if (dev) {
10204 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10205 !netif_running(dev)) {
10206 if (rtnl)
10207 rtnl_unlock();
10208 return -ENETDOWN;
10209 }
10210
10211 dev_hold(dev);
10212 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10213 if (!wdev->p2p_started) {
10214 if (rtnl)
10215 rtnl_unlock();
10216 return -ENETDOWN;
10217 }
10218 }
10219
10220 info->user_ptr[0] = rdev;
10221 }
10222
10223 return 0;
10224 }
10225
10226 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10227 struct genl_info *info)
10228 {
10229 if (info->user_ptr[1]) {
10230 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10231 struct wireless_dev *wdev = info->user_ptr[1];
10232
10233 if (wdev->netdev)
10234 dev_put(wdev->netdev);
10235 } else {
10236 dev_put(info->user_ptr[1]);
10237 }
10238 }
10239
10240 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10241 rtnl_unlock();
10242
10243 /* If needed, clear the netlink message payload from the SKB
10244 * as it might contain key data that shouldn't stick around on
10245 * the heap after the SKB is freed. The netlink message header
10246 * is still needed for further processing, so leave it intact.
10247 */
10248 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10249 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10250
10251 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10252 }
10253 }
10254
10255 static const struct genl_ops nl80211_ops[] = {
10256 {
10257 .cmd = NL80211_CMD_GET_WIPHY,
10258 .doit = nl80211_get_wiphy,
10259 .dumpit = nl80211_dump_wiphy,
10260 .done = nl80211_dump_wiphy_done,
10261 .policy = nl80211_policy,
10262 /* can be retrieved by unprivileged users */
10263 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10264 NL80211_FLAG_NEED_RTNL,
10265 },
10266 {
10267 .cmd = NL80211_CMD_SET_WIPHY,
10268 .doit = nl80211_set_wiphy,
10269 .policy = nl80211_policy,
10270 .flags = GENL_ADMIN_PERM,
10271 .internal_flags = NL80211_FLAG_NEED_RTNL,
10272 },
10273 {
10274 .cmd = NL80211_CMD_GET_INTERFACE,
10275 .doit = nl80211_get_interface,
10276 .dumpit = nl80211_dump_interface,
10277 .policy = nl80211_policy,
10278 /* can be retrieved by unprivileged users */
10279 .internal_flags = NL80211_FLAG_NEED_WDEV |
10280 NL80211_FLAG_NEED_RTNL,
10281 },
10282 {
10283 .cmd = NL80211_CMD_SET_INTERFACE,
10284 .doit = nl80211_set_interface,
10285 .policy = nl80211_policy,
10286 .flags = GENL_ADMIN_PERM,
10287 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10288 NL80211_FLAG_NEED_RTNL,
10289 },
10290 {
10291 .cmd = NL80211_CMD_NEW_INTERFACE,
10292 .doit = nl80211_new_interface,
10293 .policy = nl80211_policy,
10294 .flags = GENL_ADMIN_PERM,
10295 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10296 NL80211_FLAG_NEED_RTNL,
10297 },
10298 {
10299 .cmd = NL80211_CMD_DEL_INTERFACE,
10300 .doit = nl80211_del_interface,
10301 .policy = nl80211_policy,
10302 .flags = GENL_ADMIN_PERM,
10303 .internal_flags = NL80211_FLAG_NEED_WDEV |
10304 NL80211_FLAG_NEED_RTNL,
10305 },
10306 {
10307 .cmd = NL80211_CMD_GET_KEY,
10308 .doit = nl80211_get_key,
10309 .policy = nl80211_policy,
10310 .flags = GENL_ADMIN_PERM,
10311 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10312 NL80211_FLAG_NEED_RTNL,
10313 },
10314 {
10315 .cmd = NL80211_CMD_SET_KEY,
10316 .doit = nl80211_set_key,
10317 .policy = nl80211_policy,
10318 .flags = GENL_ADMIN_PERM,
10319 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10320 NL80211_FLAG_NEED_RTNL |
10321 NL80211_FLAG_CLEAR_SKB,
10322 },
10323 {
10324 .cmd = NL80211_CMD_NEW_KEY,
10325 .doit = nl80211_new_key,
10326 .policy = nl80211_policy,
10327 .flags = GENL_ADMIN_PERM,
10328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329 NL80211_FLAG_NEED_RTNL |
10330 NL80211_FLAG_CLEAR_SKB,
10331 },
10332 {
10333 .cmd = NL80211_CMD_DEL_KEY,
10334 .doit = nl80211_del_key,
10335 .policy = nl80211_policy,
10336 .flags = GENL_ADMIN_PERM,
10337 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10338 NL80211_FLAG_NEED_RTNL,
10339 },
10340 {
10341 .cmd = NL80211_CMD_SET_BEACON,
10342 .policy = nl80211_policy,
10343 .flags = GENL_ADMIN_PERM,
10344 .doit = nl80211_set_beacon,
10345 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10346 NL80211_FLAG_NEED_RTNL,
10347 },
10348 {
10349 .cmd = NL80211_CMD_START_AP,
10350 .policy = nl80211_policy,
10351 .flags = GENL_ADMIN_PERM,
10352 .doit = nl80211_start_ap,
10353 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10354 NL80211_FLAG_NEED_RTNL,
10355 },
10356 {
10357 .cmd = NL80211_CMD_STOP_AP,
10358 .policy = nl80211_policy,
10359 .flags = GENL_ADMIN_PERM,
10360 .doit = nl80211_stop_ap,
10361 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10362 NL80211_FLAG_NEED_RTNL,
10363 },
10364 {
10365 .cmd = NL80211_CMD_GET_STATION,
10366 .doit = nl80211_get_station,
10367 .dumpit = nl80211_dump_station,
10368 .policy = nl80211_policy,
10369 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10370 NL80211_FLAG_NEED_RTNL,
10371 },
10372 {
10373 .cmd = NL80211_CMD_SET_STATION,
10374 .doit = nl80211_set_station,
10375 .policy = nl80211_policy,
10376 .flags = GENL_ADMIN_PERM,
10377 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10378 NL80211_FLAG_NEED_RTNL,
10379 },
10380 {
10381 .cmd = NL80211_CMD_NEW_STATION,
10382 .doit = nl80211_new_station,
10383 .policy = nl80211_policy,
10384 .flags = GENL_ADMIN_PERM,
10385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10386 NL80211_FLAG_NEED_RTNL,
10387 },
10388 {
10389 .cmd = NL80211_CMD_DEL_STATION,
10390 .doit = nl80211_del_station,
10391 .policy = nl80211_policy,
10392 .flags = GENL_ADMIN_PERM,
10393 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10394 NL80211_FLAG_NEED_RTNL,
10395 },
10396 {
10397 .cmd = NL80211_CMD_GET_MPATH,
10398 .doit = nl80211_get_mpath,
10399 .dumpit = nl80211_dump_mpath,
10400 .policy = nl80211_policy,
10401 .flags = GENL_ADMIN_PERM,
10402 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10403 NL80211_FLAG_NEED_RTNL,
10404 },
10405 {
10406 .cmd = NL80211_CMD_GET_MPP,
10407 .doit = nl80211_get_mpp,
10408 .dumpit = nl80211_dump_mpp,
10409 .policy = nl80211_policy,
10410 .flags = GENL_ADMIN_PERM,
10411 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10412 NL80211_FLAG_NEED_RTNL,
10413 },
10414 {
10415 .cmd = NL80211_CMD_SET_MPATH,
10416 .doit = nl80211_set_mpath,
10417 .policy = nl80211_policy,
10418 .flags = GENL_ADMIN_PERM,
10419 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10420 NL80211_FLAG_NEED_RTNL,
10421 },
10422 {
10423 .cmd = NL80211_CMD_NEW_MPATH,
10424 .doit = nl80211_new_mpath,
10425 .policy = nl80211_policy,
10426 .flags = GENL_ADMIN_PERM,
10427 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10428 NL80211_FLAG_NEED_RTNL,
10429 },
10430 {
10431 .cmd = NL80211_CMD_DEL_MPATH,
10432 .doit = nl80211_del_mpath,
10433 .policy = nl80211_policy,
10434 .flags = GENL_ADMIN_PERM,
10435 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10436 NL80211_FLAG_NEED_RTNL,
10437 },
10438 {
10439 .cmd = NL80211_CMD_SET_BSS,
10440 .doit = nl80211_set_bss,
10441 .policy = nl80211_policy,
10442 .flags = GENL_ADMIN_PERM,
10443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444 NL80211_FLAG_NEED_RTNL,
10445 },
10446 {
10447 .cmd = NL80211_CMD_GET_REG,
10448 .doit = nl80211_get_reg_do,
10449 .dumpit = nl80211_get_reg_dump,
10450 .policy = nl80211_policy,
10451 .internal_flags = NL80211_FLAG_NEED_RTNL,
10452 /* can be retrieved by unprivileged users */
10453 },
10454 {
10455 .cmd = NL80211_CMD_SET_REG,
10456 .doit = nl80211_set_reg,
10457 .policy = nl80211_policy,
10458 .flags = GENL_ADMIN_PERM,
10459 .internal_flags = NL80211_FLAG_NEED_RTNL,
10460 },
10461 {
10462 .cmd = NL80211_CMD_REQ_SET_REG,
10463 .doit = nl80211_req_set_reg,
10464 .policy = nl80211_policy,
10465 .flags = GENL_ADMIN_PERM,
10466 },
10467 {
10468 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10469 .doit = nl80211_get_mesh_config,
10470 .policy = nl80211_policy,
10471 /* can be retrieved by unprivileged users */
10472 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10473 NL80211_FLAG_NEED_RTNL,
10474 },
10475 {
10476 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10477 .doit = nl80211_update_mesh_config,
10478 .policy = nl80211_policy,
10479 .flags = GENL_ADMIN_PERM,
10480 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10481 NL80211_FLAG_NEED_RTNL,
10482 },
10483 {
10484 .cmd = NL80211_CMD_TRIGGER_SCAN,
10485 .doit = nl80211_trigger_scan,
10486 .policy = nl80211_policy,
10487 .flags = GENL_ADMIN_PERM,
10488 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10489 NL80211_FLAG_NEED_RTNL,
10490 },
10491 {
10492 .cmd = NL80211_CMD_GET_SCAN,
10493 .policy = nl80211_policy,
10494 .dumpit = nl80211_dump_scan,
10495 },
10496 {
10497 .cmd = NL80211_CMD_START_SCHED_SCAN,
10498 .doit = nl80211_start_sched_scan,
10499 .policy = nl80211_policy,
10500 .flags = GENL_ADMIN_PERM,
10501 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10502 NL80211_FLAG_NEED_RTNL,
10503 },
10504 {
10505 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10506 .doit = nl80211_stop_sched_scan,
10507 .policy = nl80211_policy,
10508 .flags = GENL_ADMIN_PERM,
10509 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10510 NL80211_FLAG_NEED_RTNL,
10511 },
10512 {
10513 .cmd = NL80211_CMD_AUTHENTICATE,
10514 .doit = nl80211_authenticate,
10515 .policy = nl80211_policy,
10516 .flags = GENL_ADMIN_PERM,
10517 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10518 NL80211_FLAG_NEED_RTNL |
10519 NL80211_FLAG_CLEAR_SKB,
10520 },
10521 {
10522 .cmd = NL80211_CMD_ASSOCIATE,
10523 .doit = nl80211_associate,
10524 .policy = nl80211_policy,
10525 .flags = GENL_ADMIN_PERM,
10526 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10527 NL80211_FLAG_NEED_RTNL,
10528 },
10529 {
10530 .cmd = NL80211_CMD_DEAUTHENTICATE,
10531 .doit = nl80211_deauthenticate,
10532 .policy = nl80211_policy,
10533 .flags = GENL_ADMIN_PERM,
10534 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10535 NL80211_FLAG_NEED_RTNL,
10536 },
10537 {
10538 .cmd = NL80211_CMD_DISASSOCIATE,
10539 .doit = nl80211_disassociate,
10540 .policy = nl80211_policy,
10541 .flags = GENL_ADMIN_PERM,
10542 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10543 NL80211_FLAG_NEED_RTNL,
10544 },
10545 {
10546 .cmd = NL80211_CMD_JOIN_IBSS,
10547 .doit = nl80211_join_ibss,
10548 .policy = nl80211_policy,
10549 .flags = GENL_ADMIN_PERM,
10550 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10551 NL80211_FLAG_NEED_RTNL,
10552 },
10553 {
10554 .cmd = NL80211_CMD_LEAVE_IBSS,
10555 .doit = nl80211_leave_ibss,
10556 .policy = nl80211_policy,
10557 .flags = GENL_ADMIN_PERM,
10558 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10559 NL80211_FLAG_NEED_RTNL,
10560 },
10561 #ifdef CONFIG_NL80211_TESTMODE
10562 {
10563 .cmd = NL80211_CMD_TESTMODE,
10564 .doit = nl80211_testmode_do,
10565 .dumpit = nl80211_testmode_dump,
10566 .policy = nl80211_policy,
10567 .flags = GENL_ADMIN_PERM,
10568 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10569 NL80211_FLAG_NEED_RTNL,
10570 },
10571 #endif
10572 {
10573 .cmd = NL80211_CMD_CONNECT,
10574 .doit = nl80211_connect,
10575 .policy = nl80211_policy,
10576 .flags = GENL_ADMIN_PERM,
10577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10578 NL80211_FLAG_NEED_RTNL,
10579 },
10580 {
10581 .cmd = NL80211_CMD_DISCONNECT,
10582 .doit = nl80211_disconnect,
10583 .policy = nl80211_policy,
10584 .flags = GENL_ADMIN_PERM,
10585 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10586 NL80211_FLAG_NEED_RTNL,
10587 },
10588 {
10589 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10590 .doit = nl80211_wiphy_netns,
10591 .policy = nl80211_policy,
10592 .flags = GENL_ADMIN_PERM,
10593 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10594 NL80211_FLAG_NEED_RTNL,
10595 },
10596 {
10597 .cmd = NL80211_CMD_GET_SURVEY,
10598 .policy = nl80211_policy,
10599 .dumpit = nl80211_dump_survey,
10600 },
10601 {
10602 .cmd = NL80211_CMD_SET_PMKSA,
10603 .doit = nl80211_setdel_pmksa,
10604 .policy = nl80211_policy,
10605 .flags = GENL_ADMIN_PERM,
10606 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10607 NL80211_FLAG_NEED_RTNL,
10608 },
10609 {
10610 .cmd = NL80211_CMD_DEL_PMKSA,
10611 .doit = nl80211_setdel_pmksa,
10612 .policy = nl80211_policy,
10613 .flags = GENL_ADMIN_PERM,
10614 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10615 NL80211_FLAG_NEED_RTNL,
10616 },
10617 {
10618 .cmd = NL80211_CMD_FLUSH_PMKSA,
10619 .doit = nl80211_flush_pmksa,
10620 .policy = nl80211_policy,
10621 .flags = GENL_ADMIN_PERM,
10622 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10623 NL80211_FLAG_NEED_RTNL,
10624 },
10625 {
10626 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10627 .doit = nl80211_remain_on_channel,
10628 .policy = nl80211_policy,
10629 .flags = GENL_ADMIN_PERM,
10630 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10631 NL80211_FLAG_NEED_RTNL,
10632 },
10633 {
10634 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10635 .doit = nl80211_cancel_remain_on_channel,
10636 .policy = nl80211_policy,
10637 .flags = GENL_ADMIN_PERM,
10638 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10639 NL80211_FLAG_NEED_RTNL,
10640 },
10641 {
10642 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10643 .doit = nl80211_set_tx_bitrate_mask,
10644 .policy = nl80211_policy,
10645 .flags = GENL_ADMIN_PERM,
10646 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10647 NL80211_FLAG_NEED_RTNL,
10648 },
10649 {
10650 .cmd = NL80211_CMD_REGISTER_FRAME,
10651 .doit = nl80211_register_mgmt,
10652 .policy = nl80211_policy,
10653 .flags = GENL_ADMIN_PERM,
10654 .internal_flags = NL80211_FLAG_NEED_WDEV |
10655 NL80211_FLAG_NEED_RTNL,
10656 },
10657 {
10658 .cmd = NL80211_CMD_FRAME,
10659 .doit = nl80211_tx_mgmt,
10660 .policy = nl80211_policy,
10661 .flags = GENL_ADMIN_PERM,
10662 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10663 NL80211_FLAG_NEED_RTNL,
10664 },
10665 {
10666 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10667 .doit = nl80211_tx_mgmt_cancel_wait,
10668 .policy = nl80211_policy,
10669 .flags = GENL_ADMIN_PERM,
10670 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10671 NL80211_FLAG_NEED_RTNL,
10672 },
10673 {
10674 .cmd = NL80211_CMD_SET_POWER_SAVE,
10675 .doit = nl80211_set_power_save,
10676 .policy = nl80211_policy,
10677 .flags = GENL_ADMIN_PERM,
10678 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10679 NL80211_FLAG_NEED_RTNL,
10680 },
10681 {
10682 .cmd = NL80211_CMD_GET_POWER_SAVE,
10683 .doit = nl80211_get_power_save,
10684 .policy = nl80211_policy,
10685 /* can be retrieved by unprivileged users */
10686 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10687 NL80211_FLAG_NEED_RTNL,
10688 },
10689 {
10690 .cmd = NL80211_CMD_SET_CQM,
10691 .doit = nl80211_set_cqm,
10692 .policy = nl80211_policy,
10693 .flags = GENL_ADMIN_PERM,
10694 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10695 NL80211_FLAG_NEED_RTNL,
10696 },
10697 {
10698 .cmd = NL80211_CMD_SET_CHANNEL,
10699 .doit = nl80211_set_channel,
10700 .policy = nl80211_policy,
10701 .flags = GENL_ADMIN_PERM,
10702 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10703 NL80211_FLAG_NEED_RTNL,
10704 },
10705 {
10706 .cmd = NL80211_CMD_SET_WDS_PEER,
10707 .doit = nl80211_set_wds_peer,
10708 .policy = nl80211_policy,
10709 .flags = GENL_ADMIN_PERM,
10710 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10711 NL80211_FLAG_NEED_RTNL,
10712 },
10713 {
10714 .cmd = NL80211_CMD_JOIN_MESH,
10715 .doit = nl80211_join_mesh,
10716 .policy = nl80211_policy,
10717 .flags = GENL_ADMIN_PERM,
10718 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10719 NL80211_FLAG_NEED_RTNL,
10720 },
10721 {
10722 .cmd = NL80211_CMD_LEAVE_MESH,
10723 .doit = nl80211_leave_mesh,
10724 .policy = nl80211_policy,
10725 .flags = GENL_ADMIN_PERM,
10726 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10727 NL80211_FLAG_NEED_RTNL,
10728 },
10729 {
10730 .cmd = NL80211_CMD_JOIN_OCB,
10731 .doit = nl80211_join_ocb,
10732 .policy = nl80211_policy,
10733 .flags = GENL_ADMIN_PERM,
10734 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10735 NL80211_FLAG_NEED_RTNL,
10736 },
10737 {
10738 .cmd = NL80211_CMD_LEAVE_OCB,
10739 .doit = nl80211_leave_ocb,
10740 .policy = nl80211_policy,
10741 .flags = GENL_ADMIN_PERM,
10742 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10743 NL80211_FLAG_NEED_RTNL,
10744 },
10745 #ifdef CONFIG_PM
10746 {
10747 .cmd = NL80211_CMD_GET_WOWLAN,
10748 .doit = nl80211_get_wowlan,
10749 .policy = nl80211_policy,
10750 /* can be retrieved by unprivileged users */
10751 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10752 NL80211_FLAG_NEED_RTNL,
10753 },
10754 {
10755 .cmd = NL80211_CMD_SET_WOWLAN,
10756 .doit = nl80211_set_wowlan,
10757 .policy = nl80211_policy,
10758 .flags = GENL_ADMIN_PERM,
10759 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10760 NL80211_FLAG_NEED_RTNL,
10761 },
10762 #endif
10763 {
10764 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10765 .doit = nl80211_set_rekey_data,
10766 .policy = nl80211_policy,
10767 .flags = GENL_ADMIN_PERM,
10768 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10769 NL80211_FLAG_NEED_RTNL |
10770 NL80211_FLAG_CLEAR_SKB,
10771 },
10772 {
10773 .cmd = NL80211_CMD_TDLS_MGMT,
10774 .doit = nl80211_tdls_mgmt,
10775 .policy = nl80211_policy,
10776 .flags = GENL_ADMIN_PERM,
10777 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10778 NL80211_FLAG_NEED_RTNL,
10779 },
10780 {
10781 .cmd = NL80211_CMD_TDLS_OPER,
10782 .doit = nl80211_tdls_oper,
10783 .policy = nl80211_policy,
10784 .flags = GENL_ADMIN_PERM,
10785 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10786 NL80211_FLAG_NEED_RTNL,
10787 },
10788 {
10789 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10790 .doit = nl80211_register_unexpected_frame,
10791 .policy = nl80211_policy,
10792 .flags = GENL_ADMIN_PERM,
10793 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10794 NL80211_FLAG_NEED_RTNL,
10795 },
10796 {
10797 .cmd = NL80211_CMD_PROBE_CLIENT,
10798 .doit = nl80211_probe_client,
10799 .policy = nl80211_policy,
10800 .flags = GENL_ADMIN_PERM,
10801 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10802 NL80211_FLAG_NEED_RTNL,
10803 },
10804 {
10805 .cmd = NL80211_CMD_REGISTER_BEACONS,
10806 .doit = nl80211_register_beacons,
10807 .policy = nl80211_policy,
10808 .flags = GENL_ADMIN_PERM,
10809 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10810 NL80211_FLAG_NEED_RTNL,
10811 },
10812 {
10813 .cmd = NL80211_CMD_SET_NOACK_MAP,
10814 .doit = nl80211_set_noack_map,
10815 .policy = nl80211_policy,
10816 .flags = GENL_ADMIN_PERM,
10817 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10818 NL80211_FLAG_NEED_RTNL,
10819 },
10820 {
10821 .cmd = NL80211_CMD_START_P2P_DEVICE,
10822 .doit = nl80211_start_p2p_device,
10823 .policy = nl80211_policy,
10824 .flags = GENL_ADMIN_PERM,
10825 .internal_flags = NL80211_FLAG_NEED_WDEV |
10826 NL80211_FLAG_NEED_RTNL,
10827 },
10828 {
10829 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10830 .doit = nl80211_stop_p2p_device,
10831 .policy = nl80211_policy,
10832 .flags = GENL_ADMIN_PERM,
10833 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10834 NL80211_FLAG_NEED_RTNL,
10835 },
10836 {
10837 .cmd = NL80211_CMD_SET_MCAST_RATE,
10838 .doit = nl80211_set_mcast_rate,
10839 .policy = nl80211_policy,
10840 .flags = GENL_ADMIN_PERM,
10841 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10842 NL80211_FLAG_NEED_RTNL,
10843 },
10844 {
10845 .cmd = NL80211_CMD_SET_MAC_ACL,
10846 .doit = nl80211_set_mac_acl,
10847 .policy = nl80211_policy,
10848 .flags = GENL_ADMIN_PERM,
10849 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10850 NL80211_FLAG_NEED_RTNL,
10851 },
10852 {
10853 .cmd = NL80211_CMD_RADAR_DETECT,
10854 .doit = nl80211_start_radar_detection,
10855 .policy = nl80211_policy,
10856 .flags = GENL_ADMIN_PERM,
10857 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10858 NL80211_FLAG_NEED_RTNL,
10859 },
10860 {
10861 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10862 .doit = nl80211_get_protocol_features,
10863 .policy = nl80211_policy,
10864 },
10865 {
10866 .cmd = NL80211_CMD_UPDATE_FT_IES,
10867 .doit = nl80211_update_ft_ies,
10868 .policy = nl80211_policy,
10869 .flags = GENL_ADMIN_PERM,
10870 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10871 NL80211_FLAG_NEED_RTNL,
10872 },
10873 {
10874 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10875 .doit = nl80211_crit_protocol_start,
10876 .policy = nl80211_policy,
10877 .flags = GENL_ADMIN_PERM,
10878 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10879 NL80211_FLAG_NEED_RTNL,
10880 },
10881 {
10882 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10883 .doit = nl80211_crit_protocol_stop,
10884 .policy = nl80211_policy,
10885 .flags = GENL_ADMIN_PERM,
10886 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10887 NL80211_FLAG_NEED_RTNL,
10888 },
10889 {
10890 .cmd = NL80211_CMD_GET_COALESCE,
10891 .doit = nl80211_get_coalesce,
10892 .policy = nl80211_policy,
10893 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10894 NL80211_FLAG_NEED_RTNL,
10895 },
10896 {
10897 .cmd = NL80211_CMD_SET_COALESCE,
10898 .doit = nl80211_set_coalesce,
10899 .policy = nl80211_policy,
10900 .flags = GENL_ADMIN_PERM,
10901 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10902 NL80211_FLAG_NEED_RTNL,
10903 },
10904 {
10905 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10906 .doit = nl80211_channel_switch,
10907 .policy = nl80211_policy,
10908 .flags = GENL_ADMIN_PERM,
10909 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10910 NL80211_FLAG_NEED_RTNL,
10911 },
10912 {
10913 .cmd = NL80211_CMD_VENDOR,
10914 .doit = nl80211_vendor_cmd,
10915 .policy = nl80211_policy,
10916 .flags = GENL_ADMIN_PERM,
10917 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10918 NL80211_FLAG_NEED_RTNL,
10919 },
10920 {
10921 .cmd = NL80211_CMD_SET_QOS_MAP,
10922 .doit = nl80211_set_qos_map,
10923 .policy = nl80211_policy,
10924 .flags = GENL_ADMIN_PERM,
10925 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10926 NL80211_FLAG_NEED_RTNL,
10927 },
10928 {
10929 .cmd = NL80211_CMD_ADD_TX_TS,
10930 .doit = nl80211_add_tx_ts,
10931 .policy = nl80211_policy,
10932 .flags = GENL_ADMIN_PERM,
10933 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10934 NL80211_FLAG_NEED_RTNL,
10935 },
10936 {
10937 .cmd = NL80211_CMD_DEL_TX_TS,
10938 .doit = nl80211_del_tx_ts,
10939 .policy = nl80211_policy,
10940 .flags = GENL_ADMIN_PERM,
10941 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10942 NL80211_FLAG_NEED_RTNL,
10943 },
10944 {
10945 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10946 .doit = nl80211_tdls_channel_switch,
10947 .policy = nl80211_policy,
10948 .flags = GENL_ADMIN_PERM,
10949 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10950 NL80211_FLAG_NEED_RTNL,
10951 },
10952 {
10953 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10954 .doit = nl80211_tdls_cancel_channel_switch,
10955 .policy = nl80211_policy,
10956 .flags = GENL_ADMIN_PERM,
10957 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10958 NL80211_FLAG_NEED_RTNL,
10959 },
10960 };
10961
10962 /* notification functions */
10963
10964 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10965 enum nl80211_commands cmd)
10966 {
10967 struct sk_buff *msg;
10968 struct nl80211_dump_wiphy_state state = {};
10969
10970 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10971 cmd != NL80211_CMD_DEL_WIPHY);
10972
10973 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10974 if (!msg)
10975 return;
10976
10977 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10978 nlmsg_free(msg);
10979 return;
10980 }
10981
10982 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10983 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10984 }
10985
10986 static int nl80211_add_scan_req(struct sk_buff *msg,
10987 struct cfg80211_registered_device *rdev)
10988 {
10989 struct cfg80211_scan_request *req = rdev->scan_req;
10990 struct nlattr *nest;
10991 int i;
10992
10993 if (WARN_ON(!req))
10994 return 0;
10995
10996 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10997 if (!nest)
10998 goto nla_put_failure;
10999 for (i = 0; i < req->n_ssids; i++) {
11000 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11001 goto nla_put_failure;
11002 }
11003 nla_nest_end(msg, nest);
11004
11005 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11006 if (!nest)
11007 goto nla_put_failure;
11008 for (i = 0; i < req->n_channels; i++) {
11009 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11010 goto nla_put_failure;
11011 }
11012 nla_nest_end(msg, nest);
11013
11014 if (req->ie &&
11015 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11016 goto nla_put_failure;
11017
11018 if (req->flags &&
11019 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11020 goto nla_put_failure;
11021
11022 return 0;
11023 nla_put_failure:
11024 return -ENOBUFS;
11025 }
11026
11027 static int nl80211_send_scan_msg(struct sk_buff *msg,
11028 struct cfg80211_registered_device *rdev,
11029 struct wireless_dev *wdev,
11030 u32 portid, u32 seq, int flags,
11031 u32 cmd)
11032 {
11033 void *hdr;
11034
11035 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11036 if (!hdr)
11037 return -1;
11038
11039 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11040 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11041 wdev->netdev->ifindex)) ||
11042 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11043 goto nla_put_failure;
11044
11045 /* ignore errors and send incomplete event anyway */
11046 nl80211_add_scan_req(msg, rdev);
11047
11048 genlmsg_end(msg, hdr);
11049 return 0;
11050
11051 nla_put_failure:
11052 genlmsg_cancel(msg, hdr);
11053 return -EMSGSIZE;
11054 }
11055
11056 static int
11057 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11058 struct cfg80211_registered_device *rdev,
11059 struct net_device *netdev,
11060 u32 portid, u32 seq, int flags, u32 cmd)
11061 {
11062 void *hdr;
11063
11064 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11065 if (!hdr)
11066 return -1;
11067
11068 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11069 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11070 goto nla_put_failure;
11071
11072 genlmsg_end(msg, hdr);
11073 return 0;
11074
11075 nla_put_failure:
11076 genlmsg_cancel(msg, hdr);
11077 return -EMSGSIZE;
11078 }
11079
11080 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11081 struct wireless_dev *wdev)
11082 {
11083 struct sk_buff *msg;
11084
11085 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11086 if (!msg)
11087 return;
11088
11089 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11090 NL80211_CMD_TRIGGER_SCAN) < 0) {
11091 nlmsg_free(msg);
11092 return;
11093 }
11094
11095 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11096 NL80211_MCGRP_SCAN, GFP_KERNEL);
11097 }
11098
11099 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11100 struct wireless_dev *wdev, bool aborted)
11101 {
11102 struct sk_buff *msg;
11103
11104 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11105 if (!msg)
11106 return NULL;
11107
11108 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11109 aborted ? NL80211_CMD_SCAN_ABORTED :
11110 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11111 nlmsg_free(msg);
11112 return NULL;
11113 }
11114
11115 return msg;
11116 }
11117
11118 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11119 struct sk_buff *msg)
11120 {
11121 if (!msg)
11122 return;
11123
11124 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11125 NL80211_MCGRP_SCAN, GFP_KERNEL);
11126 }
11127
11128 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11129 struct net_device *netdev)
11130 {
11131 struct sk_buff *msg;
11132
11133 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11134 if (!msg)
11135 return;
11136
11137 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11138 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11139 nlmsg_free(msg);
11140 return;
11141 }
11142
11143 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11144 NL80211_MCGRP_SCAN, GFP_KERNEL);
11145 }
11146
11147 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11148 struct net_device *netdev, u32 cmd)
11149 {
11150 struct sk_buff *msg;
11151
11152 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11153 if (!msg)
11154 return;
11155
11156 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11157 nlmsg_free(msg);
11158 return;
11159 }
11160
11161 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11162 NL80211_MCGRP_SCAN, GFP_KERNEL);
11163 }
11164
11165 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11166 struct regulatory_request *request)
11167 {
11168 /* Userspace can always count this one always being set */
11169 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11170 goto nla_put_failure;
11171
11172 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11173 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11174 NL80211_REGDOM_TYPE_WORLD))
11175 goto nla_put_failure;
11176 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11177 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11178 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11179 goto nla_put_failure;
11180 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11181 request->intersect) {
11182 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11183 NL80211_REGDOM_TYPE_INTERSECTION))
11184 goto nla_put_failure;
11185 } else {
11186 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11187 NL80211_REGDOM_TYPE_COUNTRY) ||
11188 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11189 request->alpha2))
11190 goto nla_put_failure;
11191 }
11192
11193 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11194 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11195
11196 if (wiphy &&
11197 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11198 goto nla_put_failure;
11199
11200 if (wiphy &&
11201 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11202 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11203 goto nla_put_failure;
11204 }
11205
11206 return true;
11207
11208 nla_put_failure:
11209 return false;
11210 }
11211
11212 /*
11213 * This can happen on global regulatory changes or device specific settings
11214 * based on custom regulatory domains.
11215 */
11216 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11217 struct regulatory_request *request)
11218 {
11219 struct sk_buff *msg;
11220 void *hdr;
11221
11222 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11223 if (!msg)
11224 return;
11225
11226 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11227 if (!hdr) {
11228 nlmsg_free(msg);
11229 return;
11230 }
11231
11232 if (nl80211_reg_change_event_fill(msg, request) == false)
11233 goto nla_put_failure;
11234
11235 genlmsg_end(msg, hdr);
11236
11237 rcu_read_lock();
11238 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11239 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11240 rcu_read_unlock();
11241
11242 return;
11243
11244 nla_put_failure:
11245 genlmsg_cancel(msg, hdr);
11246 nlmsg_free(msg);
11247 }
11248
11249 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11250 struct net_device *netdev,
11251 const u8 *buf, size_t len,
11252 enum nl80211_commands cmd, gfp_t gfp,
11253 int uapsd_queues)
11254 {
11255 struct sk_buff *msg;
11256 void *hdr;
11257
11258 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11259 if (!msg)
11260 return;
11261
11262 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11263 if (!hdr) {
11264 nlmsg_free(msg);
11265 return;
11266 }
11267
11268 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11269 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11270 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11271 goto nla_put_failure;
11272
11273 if (uapsd_queues >= 0) {
11274 struct nlattr *nla_wmm =
11275 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11276 if (!nla_wmm)
11277 goto nla_put_failure;
11278
11279 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11280 uapsd_queues))
11281 goto nla_put_failure;
11282
11283 nla_nest_end(msg, nla_wmm);
11284 }
11285
11286 genlmsg_end(msg, hdr);
11287
11288 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11289 NL80211_MCGRP_MLME, gfp);
11290 return;
11291
11292 nla_put_failure:
11293 genlmsg_cancel(msg, hdr);
11294 nlmsg_free(msg);
11295 }
11296
11297 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11298 struct net_device *netdev, const u8 *buf,
11299 size_t len, gfp_t gfp)
11300 {
11301 nl80211_send_mlme_event(rdev, netdev, buf, len,
11302 NL80211_CMD_AUTHENTICATE, gfp, -1);
11303 }
11304
11305 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11306 struct net_device *netdev, const u8 *buf,
11307 size_t len, gfp_t gfp, int uapsd_queues)
11308 {
11309 nl80211_send_mlme_event(rdev, netdev, buf, len,
11310 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11311 }
11312
11313 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11314 struct net_device *netdev, const u8 *buf,
11315 size_t len, gfp_t gfp)
11316 {
11317 nl80211_send_mlme_event(rdev, netdev, buf, len,
11318 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11319 }
11320
11321 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11322 struct net_device *netdev, const u8 *buf,
11323 size_t len, gfp_t gfp)
11324 {
11325 nl80211_send_mlme_event(rdev, netdev, buf, len,
11326 NL80211_CMD_DISASSOCIATE, gfp, -1);
11327 }
11328
11329 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11330 size_t len)
11331 {
11332 struct wireless_dev *wdev = dev->ieee80211_ptr;
11333 struct wiphy *wiphy = wdev->wiphy;
11334 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11335 const struct ieee80211_mgmt *mgmt = (void *)buf;
11336 u32 cmd;
11337
11338 if (WARN_ON(len < 2))
11339 return;
11340
11341 if (ieee80211_is_deauth(mgmt->frame_control))
11342 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11343 else
11344 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11345
11346 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11347 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11348 }
11349 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11350
11351 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11352 struct net_device *netdev, int cmd,
11353 const u8 *addr, gfp_t gfp)
11354 {
11355 struct sk_buff *msg;
11356 void *hdr;
11357
11358 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11359 if (!msg)
11360 return;
11361
11362 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11363 if (!hdr) {
11364 nlmsg_free(msg);
11365 return;
11366 }
11367
11368 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11369 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11370 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11371 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11372 goto nla_put_failure;
11373
11374 genlmsg_end(msg, hdr);
11375
11376 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11377 NL80211_MCGRP_MLME, gfp);
11378 return;
11379
11380 nla_put_failure:
11381 genlmsg_cancel(msg, hdr);
11382 nlmsg_free(msg);
11383 }
11384
11385 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11386 struct net_device *netdev, const u8 *addr,
11387 gfp_t gfp)
11388 {
11389 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11390 addr, gfp);
11391 }
11392
11393 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11394 struct net_device *netdev, const u8 *addr,
11395 gfp_t gfp)
11396 {
11397 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11398 addr, gfp);
11399 }
11400
11401 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11402 struct net_device *netdev, const u8 *bssid,
11403 const u8 *req_ie, size_t req_ie_len,
11404 const u8 *resp_ie, size_t resp_ie_len,
11405 u16 status, gfp_t gfp)
11406 {
11407 struct sk_buff *msg;
11408 void *hdr;
11409
11410 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11411 if (!msg)
11412 return;
11413
11414 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11415 if (!hdr) {
11416 nlmsg_free(msg);
11417 return;
11418 }
11419
11420 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11421 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11422 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11423 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11424 (req_ie &&
11425 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11426 (resp_ie &&
11427 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11428 goto nla_put_failure;
11429
11430 genlmsg_end(msg, hdr);
11431
11432 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11433 NL80211_MCGRP_MLME, gfp);
11434 return;
11435
11436 nla_put_failure:
11437 genlmsg_cancel(msg, hdr);
11438 nlmsg_free(msg);
11439
11440 }
11441
11442 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11443 struct net_device *netdev, const u8 *bssid,
11444 const u8 *req_ie, size_t req_ie_len,
11445 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11446 {
11447 struct sk_buff *msg;
11448 void *hdr;
11449
11450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11451 if (!msg)
11452 return;
11453
11454 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11455 if (!hdr) {
11456 nlmsg_free(msg);
11457 return;
11458 }
11459
11460 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11461 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11462 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11463 (req_ie &&
11464 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11465 (resp_ie &&
11466 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11467 goto nla_put_failure;
11468
11469 genlmsg_end(msg, hdr);
11470
11471 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11472 NL80211_MCGRP_MLME, gfp);
11473 return;
11474
11475 nla_put_failure:
11476 genlmsg_cancel(msg, hdr);
11477 nlmsg_free(msg);
11478
11479 }
11480
11481 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11482 struct net_device *netdev, u16 reason,
11483 const u8 *ie, size_t ie_len, bool from_ap)
11484 {
11485 struct sk_buff *msg;
11486 void *hdr;
11487
11488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11489 if (!msg)
11490 return;
11491
11492 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11493 if (!hdr) {
11494 nlmsg_free(msg);
11495 return;
11496 }
11497
11498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11499 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11500 (from_ap && reason &&
11501 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11502 (from_ap &&
11503 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11504 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11505 goto nla_put_failure;
11506
11507 genlmsg_end(msg, hdr);
11508
11509 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11510 NL80211_MCGRP_MLME, GFP_KERNEL);
11511 return;
11512
11513 nla_put_failure:
11514 genlmsg_cancel(msg, hdr);
11515 nlmsg_free(msg);
11516
11517 }
11518
11519 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11520 struct net_device *netdev, const u8 *bssid,
11521 gfp_t gfp)
11522 {
11523 struct sk_buff *msg;
11524 void *hdr;
11525
11526 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11527 if (!msg)
11528 return;
11529
11530 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11531 if (!hdr) {
11532 nlmsg_free(msg);
11533 return;
11534 }
11535
11536 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11537 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11538 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11539 goto nla_put_failure;
11540
11541 genlmsg_end(msg, hdr);
11542
11543 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11544 NL80211_MCGRP_MLME, gfp);
11545 return;
11546
11547 nla_put_failure:
11548 genlmsg_cancel(msg, hdr);
11549 nlmsg_free(msg);
11550 }
11551
11552 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11553 const u8* ie, u8 ie_len, gfp_t gfp)
11554 {
11555 struct wireless_dev *wdev = dev->ieee80211_ptr;
11556 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11557 struct sk_buff *msg;
11558 void *hdr;
11559
11560 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11561 return;
11562
11563 trace_cfg80211_notify_new_peer_candidate(dev, addr);
11564
11565 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11566 if (!msg)
11567 return;
11568
11569 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11570 if (!hdr) {
11571 nlmsg_free(msg);
11572 return;
11573 }
11574
11575 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11576 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11577 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11578 (ie_len && ie &&
11579 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11580 goto nla_put_failure;
11581
11582 genlmsg_end(msg, hdr);
11583
11584 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11585 NL80211_MCGRP_MLME, gfp);
11586 return;
11587
11588 nla_put_failure:
11589 genlmsg_cancel(msg, hdr);
11590 nlmsg_free(msg);
11591 }
11592 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11593
11594 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11595 struct net_device *netdev, const u8 *addr,
11596 enum nl80211_key_type key_type, int key_id,
11597 const u8 *tsc, gfp_t gfp)
11598 {
11599 struct sk_buff *msg;
11600 void *hdr;
11601
11602 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11603 if (!msg)
11604 return;
11605
11606 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11607 if (!hdr) {
11608 nlmsg_free(msg);
11609 return;
11610 }
11611
11612 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11613 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11614 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11615 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11616 (key_id != -1 &&
11617 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11618 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11619 goto nla_put_failure;
11620
11621 genlmsg_end(msg, hdr);
11622
11623 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11624 NL80211_MCGRP_MLME, gfp);
11625 return;
11626
11627 nla_put_failure:
11628 genlmsg_cancel(msg, hdr);
11629 nlmsg_free(msg);
11630 }
11631
11632 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11633 struct ieee80211_channel *channel_before,
11634 struct ieee80211_channel *channel_after)
11635 {
11636 struct sk_buff *msg;
11637 void *hdr;
11638 struct nlattr *nl_freq;
11639
11640 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11641 if (!msg)
11642 return;
11643
11644 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11645 if (!hdr) {
11646 nlmsg_free(msg);
11647 return;
11648 }
11649
11650 /*
11651 * Since we are applying the beacon hint to a wiphy we know its
11652 * wiphy_idx is valid
11653 */
11654 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11655 goto nla_put_failure;
11656
11657 /* Before */
11658 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11659 if (!nl_freq)
11660 goto nla_put_failure;
11661 if (nl80211_msg_put_channel(msg, channel_before, false))
11662 goto nla_put_failure;
11663 nla_nest_end(msg, nl_freq);
11664
11665 /* After */
11666 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11667 if (!nl_freq)
11668 goto nla_put_failure;
11669 if (nl80211_msg_put_channel(msg, channel_after, false))
11670 goto nla_put_failure;
11671 nla_nest_end(msg, nl_freq);
11672
11673 genlmsg_end(msg, hdr);
11674
11675 rcu_read_lock();
11676 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11677 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11678 rcu_read_unlock();
11679
11680 return;
11681
11682 nla_put_failure:
11683 genlmsg_cancel(msg, hdr);
11684 nlmsg_free(msg);
11685 }
11686
11687 static void nl80211_send_remain_on_chan_event(
11688 int cmd, struct cfg80211_registered_device *rdev,
11689 struct wireless_dev *wdev, u64 cookie,
11690 struct ieee80211_channel *chan,
11691 unsigned int duration, gfp_t gfp)
11692 {
11693 struct sk_buff *msg;
11694 void *hdr;
11695
11696 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11697 if (!msg)
11698 return;
11699
11700 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11701 if (!hdr) {
11702 nlmsg_free(msg);
11703 return;
11704 }
11705
11706 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11707 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11708 wdev->netdev->ifindex)) ||
11709 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11710 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11711 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11712 NL80211_CHAN_NO_HT) ||
11713 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11714 goto nla_put_failure;
11715
11716 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11717 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11718 goto nla_put_failure;
11719
11720 genlmsg_end(msg, hdr);
11721
11722 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11723 NL80211_MCGRP_MLME, gfp);
11724 return;
11725
11726 nla_put_failure:
11727 genlmsg_cancel(msg, hdr);
11728 nlmsg_free(msg);
11729 }
11730
11731 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11732 struct ieee80211_channel *chan,
11733 unsigned int duration, gfp_t gfp)
11734 {
11735 struct wiphy *wiphy = wdev->wiphy;
11736 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11737
11738 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11739 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11740 rdev, wdev, cookie, chan,
11741 duration, gfp);
11742 }
11743 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11744
11745 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11746 struct ieee80211_channel *chan,
11747 gfp_t gfp)
11748 {
11749 struct wiphy *wiphy = wdev->wiphy;
11750 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11751
11752 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11753 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11754 rdev, wdev, cookie, chan, 0, gfp);
11755 }
11756 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11757
11758 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11759 struct station_info *sinfo, gfp_t gfp)
11760 {
11761 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11762 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11763 struct sk_buff *msg;
11764
11765 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11766
11767 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11768 if (!msg)
11769 return;
11770
11771 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11772 rdev, dev, mac_addr, sinfo) < 0) {
11773 nlmsg_free(msg);
11774 return;
11775 }
11776
11777 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11778 NL80211_MCGRP_MLME, gfp);
11779 }
11780 EXPORT_SYMBOL(cfg80211_new_sta);
11781
11782 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11783 struct station_info *sinfo, gfp_t gfp)
11784 {
11785 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11786 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11787 struct sk_buff *msg;
11788 struct station_info empty_sinfo = {};
11789
11790 if (!sinfo)
11791 sinfo = &empty_sinfo;
11792
11793 trace_cfg80211_del_sta(dev, mac_addr);
11794
11795 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11796 if (!msg)
11797 return;
11798
11799 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11800 rdev, dev, mac_addr, sinfo) < 0) {
11801 nlmsg_free(msg);
11802 return;
11803 }
11804
11805 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11806 NL80211_MCGRP_MLME, gfp);
11807 }
11808 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11809
11810 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11811 enum nl80211_connect_failed_reason reason,
11812 gfp_t gfp)
11813 {
11814 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11815 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11816 struct sk_buff *msg;
11817 void *hdr;
11818
11819 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11820 if (!msg)
11821 return;
11822
11823 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11824 if (!hdr) {
11825 nlmsg_free(msg);
11826 return;
11827 }
11828
11829 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11830 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11831 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11832 goto nla_put_failure;
11833
11834 genlmsg_end(msg, hdr);
11835
11836 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11837 NL80211_MCGRP_MLME, gfp);
11838 return;
11839
11840 nla_put_failure:
11841 genlmsg_cancel(msg, hdr);
11842 nlmsg_free(msg);
11843 }
11844 EXPORT_SYMBOL(cfg80211_conn_failed);
11845
11846 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11847 const u8 *addr, gfp_t gfp)
11848 {
11849 struct wireless_dev *wdev = dev->ieee80211_ptr;
11850 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11851 struct sk_buff *msg;
11852 void *hdr;
11853 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11854
11855 if (!nlportid)
11856 return false;
11857
11858 msg = nlmsg_new(100, gfp);
11859 if (!msg)
11860 return true;
11861
11862 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11863 if (!hdr) {
11864 nlmsg_free(msg);
11865 return true;
11866 }
11867
11868 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11869 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11870 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11871 goto nla_put_failure;
11872
11873 genlmsg_end(msg, hdr);
11874 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11875 return true;
11876
11877 nla_put_failure:
11878 genlmsg_cancel(msg, hdr);
11879 nlmsg_free(msg);
11880 return true;
11881 }
11882
11883 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11884 const u8 *addr, gfp_t gfp)
11885 {
11886 struct wireless_dev *wdev = dev->ieee80211_ptr;
11887 bool ret;
11888
11889 trace_cfg80211_rx_spurious_frame(dev, addr);
11890
11891 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11892 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11893 trace_cfg80211_return_bool(false);
11894 return false;
11895 }
11896 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11897 addr, gfp);
11898 trace_cfg80211_return_bool(ret);
11899 return ret;
11900 }
11901 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11902
11903 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11904 const u8 *addr, gfp_t gfp)
11905 {
11906 struct wireless_dev *wdev = dev->ieee80211_ptr;
11907 bool ret;
11908
11909 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11910
11911 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11912 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11913 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11914 trace_cfg80211_return_bool(false);
11915 return false;
11916 }
11917 ret = __nl80211_unexpected_frame(dev,
11918 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11919 addr, gfp);
11920 trace_cfg80211_return_bool(ret);
11921 return ret;
11922 }
11923 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11924
11925 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11926 struct wireless_dev *wdev, u32 nlportid,
11927 int freq, int sig_dbm,
11928 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11929 {
11930 struct net_device *netdev = wdev->netdev;
11931 struct sk_buff *msg;
11932 void *hdr;
11933
11934 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11935 if (!msg)
11936 return -ENOMEM;
11937
11938 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11939 if (!hdr) {
11940 nlmsg_free(msg);
11941 return -ENOMEM;
11942 }
11943
11944 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11945 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11946 netdev->ifindex)) ||
11947 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11948 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11949 (sig_dbm &&
11950 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11951 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11952 (flags &&
11953 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11954 goto nla_put_failure;
11955
11956 genlmsg_end(msg, hdr);
11957
11958 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11959
11960 nla_put_failure:
11961 genlmsg_cancel(msg, hdr);
11962 nlmsg_free(msg);
11963 return -ENOBUFS;
11964 }
11965
11966 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11967 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11968 {
11969 struct wiphy *wiphy = wdev->wiphy;
11970 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11971 struct net_device *netdev = wdev->netdev;
11972 struct sk_buff *msg;
11973 void *hdr;
11974
11975 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11976
11977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11978 if (!msg)
11979 return;
11980
11981 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11982 if (!hdr) {
11983 nlmsg_free(msg);
11984 return;
11985 }
11986
11987 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11988 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11989 netdev->ifindex)) ||
11990 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11991 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11992 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11993 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11994 goto nla_put_failure;
11995
11996 genlmsg_end(msg, hdr);
11997
11998 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11999 NL80211_MCGRP_MLME, gfp);
12000 return;
12001
12002 nla_put_failure:
12003 genlmsg_cancel(msg, hdr);
12004 nlmsg_free(msg);
12005 }
12006 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12007
12008 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12009 const char *mac, gfp_t gfp)
12010 {
12011 struct wireless_dev *wdev = dev->ieee80211_ptr;
12012 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12013 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12014 void **cb;
12015
12016 if (!msg)
12017 return NULL;
12018
12019 cb = (void **)msg->cb;
12020
12021 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12022 if (!cb[0]) {
12023 nlmsg_free(msg);
12024 return NULL;
12025 }
12026
12027 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12028 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12029 goto nla_put_failure;
12030
12031 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12032 goto nla_put_failure;
12033
12034 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12035 if (!cb[1])
12036 goto nla_put_failure;
12037
12038 cb[2] = rdev;
12039
12040 return msg;
12041 nla_put_failure:
12042 nlmsg_free(msg);
12043 return NULL;
12044 }
12045
12046 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12047 {
12048 void **cb = (void **)msg->cb;
12049 struct cfg80211_registered_device *rdev = cb[2];
12050
12051 nla_nest_end(msg, cb[1]);
12052 genlmsg_end(msg, cb[0]);
12053
12054 memset(msg->cb, 0, sizeof(msg->cb));
12055
12056 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12057 NL80211_MCGRP_MLME, gfp);
12058 }
12059
12060 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12061 enum nl80211_cqm_rssi_threshold_event rssi_event,
12062 gfp_t gfp)
12063 {
12064 struct sk_buff *msg;
12065
12066 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12067
12068 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12069 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12070 return;
12071
12072 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12073 if (!msg)
12074 return;
12075
12076 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12077 rssi_event))
12078 goto nla_put_failure;
12079
12080 cfg80211_send_cqm(msg, gfp);
12081
12082 return;
12083
12084 nla_put_failure:
12085 nlmsg_free(msg);
12086 }
12087 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12088
12089 void cfg80211_cqm_txe_notify(struct net_device *dev,
12090 const u8 *peer, u32 num_packets,
12091 u32 rate, u32 intvl, gfp_t gfp)
12092 {
12093 struct sk_buff *msg;
12094
12095 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12096 if (!msg)
12097 return;
12098
12099 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12100 goto nla_put_failure;
12101
12102 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12103 goto nla_put_failure;
12104
12105 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12106 goto nla_put_failure;
12107
12108 cfg80211_send_cqm(msg, gfp);
12109 return;
12110
12111 nla_put_failure:
12112 nlmsg_free(msg);
12113 }
12114 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12115
12116 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12117 const u8 *peer, u32 num_packets, gfp_t gfp)
12118 {
12119 struct sk_buff *msg;
12120
12121 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12122
12123 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12124 if (!msg)
12125 return;
12126
12127 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12128 goto nla_put_failure;
12129
12130 cfg80211_send_cqm(msg, gfp);
12131 return;
12132
12133 nla_put_failure:
12134 nlmsg_free(msg);
12135 }
12136 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12137
12138 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12139 {
12140 struct sk_buff *msg;
12141
12142 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12143 if (!msg)
12144 return;
12145
12146 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12147 goto nla_put_failure;
12148
12149 cfg80211_send_cqm(msg, gfp);
12150 return;
12151
12152 nla_put_failure:
12153 nlmsg_free(msg);
12154 }
12155 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12156
12157 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12158 struct net_device *netdev, const u8 *bssid,
12159 const u8 *replay_ctr, gfp_t gfp)
12160 {
12161 struct sk_buff *msg;
12162 struct nlattr *rekey_attr;
12163 void *hdr;
12164
12165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12166 if (!msg)
12167 return;
12168
12169 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12170 if (!hdr) {
12171 nlmsg_free(msg);
12172 return;
12173 }
12174
12175 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12176 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12177 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12178 goto nla_put_failure;
12179
12180 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12181 if (!rekey_attr)
12182 goto nla_put_failure;
12183
12184 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12185 NL80211_REPLAY_CTR_LEN, replay_ctr))
12186 goto nla_put_failure;
12187
12188 nla_nest_end(msg, rekey_attr);
12189
12190 genlmsg_end(msg, hdr);
12191
12192 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12193 NL80211_MCGRP_MLME, gfp);
12194 return;
12195
12196 nla_put_failure:
12197 genlmsg_cancel(msg, hdr);
12198 nlmsg_free(msg);
12199 }
12200
12201 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12202 const u8 *replay_ctr, gfp_t gfp)
12203 {
12204 struct wireless_dev *wdev = dev->ieee80211_ptr;
12205 struct wiphy *wiphy = wdev->wiphy;
12206 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12207
12208 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12209 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12210 }
12211 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12212
12213 static void
12214 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12215 struct net_device *netdev, int index,
12216 const u8 *bssid, bool preauth, gfp_t gfp)
12217 {
12218 struct sk_buff *msg;
12219 struct nlattr *attr;
12220 void *hdr;
12221
12222 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12223 if (!msg)
12224 return;
12225
12226 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12227 if (!hdr) {
12228 nlmsg_free(msg);
12229 return;
12230 }
12231
12232 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12233 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12234 goto nla_put_failure;
12235
12236 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12237 if (!attr)
12238 goto nla_put_failure;
12239
12240 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12241 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12242 (preauth &&
12243 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12244 goto nla_put_failure;
12245
12246 nla_nest_end(msg, attr);
12247
12248 genlmsg_end(msg, hdr);
12249
12250 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12251 NL80211_MCGRP_MLME, gfp);
12252 return;
12253
12254 nla_put_failure:
12255 genlmsg_cancel(msg, hdr);
12256 nlmsg_free(msg);
12257 }
12258
12259 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12260 const u8 *bssid, bool preauth, gfp_t gfp)
12261 {
12262 struct wireless_dev *wdev = dev->ieee80211_ptr;
12263 struct wiphy *wiphy = wdev->wiphy;
12264 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12265
12266 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12267 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12268 }
12269 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12270
12271 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12272 struct net_device *netdev,
12273 struct cfg80211_chan_def *chandef,
12274 gfp_t gfp,
12275 enum nl80211_commands notif,
12276 u8 count)
12277 {
12278 struct sk_buff *msg;
12279 void *hdr;
12280
12281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12282 if (!msg)
12283 return;
12284
12285 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12286 if (!hdr) {
12287 nlmsg_free(msg);
12288 return;
12289 }
12290
12291 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12292 goto nla_put_failure;
12293
12294 if (nl80211_send_chandef(msg, chandef))
12295 goto nla_put_failure;
12296
12297 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12298 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12299 goto nla_put_failure;
12300
12301 genlmsg_end(msg, hdr);
12302
12303 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12304 NL80211_MCGRP_MLME, gfp);
12305 return;
12306
12307 nla_put_failure:
12308 genlmsg_cancel(msg, hdr);
12309 nlmsg_free(msg);
12310 }
12311
12312 void cfg80211_ch_switch_notify(struct net_device *dev,
12313 struct cfg80211_chan_def *chandef)
12314 {
12315 struct wireless_dev *wdev = dev->ieee80211_ptr;
12316 struct wiphy *wiphy = wdev->wiphy;
12317 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12318
12319 ASSERT_WDEV_LOCK(wdev);
12320
12321 trace_cfg80211_ch_switch_notify(dev, chandef);
12322
12323 wdev->chandef = *chandef;
12324 wdev->preset_chandef = *chandef;
12325 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12326 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12327 }
12328 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12329
12330 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12331 struct cfg80211_chan_def *chandef,
12332 u8 count)
12333 {
12334 struct wireless_dev *wdev = dev->ieee80211_ptr;
12335 struct wiphy *wiphy = wdev->wiphy;
12336 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12337
12338 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12339
12340 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12341 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12342 }
12343 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12344
12345 void
12346 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12347 const struct cfg80211_chan_def *chandef,
12348 enum nl80211_radar_event event,
12349 struct net_device *netdev, gfp_t gfp)
12350 {
12351 struct sk_buff *msg;
12352 void *hdr;
12353
12354 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12355 if (!msg)
12356 return;
12357
12358 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12359 if (!hdr) {
12360 nlmsg_free(msg);
12361 return;
12362 }
12363
12364 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12365 goto nla_put_failure;
12366
12367 /* NOP and radar events don't need a netdev parameter */
12368 if (netdev) {
12369 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12370
12371 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12372 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12373 goto nla_put_failure;
12374 }
12375
12376 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12377 goto nla_put_failure;
12378
12379 if (nl80211_send_chandef(msg, chandef))
12380 goto nla_put_failure;
12381
12382 genlmsg_end(msg, hdr);
12383
12384 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12385 NL80211_MCGRP_MLME, gfp);
12386 return;
12387
12388 nla_put_failure:
12389 genlmsg_cancel(msg, hdr);
12390 nlmsg_free(msg);
12391 }
12392
12393 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12394 u64 cookie, bool acked, gfp_t gfp)
12395 {
12396 struct wireless_dev *wdev = dev->ieee80211_ptr;
12397 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12398 struct sk_buff *msg;
12399 void *hdr;
12400
12401 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12402
12403 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12404
12405 if (!msg)
12406 return;
12407
12408 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12409 if (!hdr) {
12410 nlmsg_free(msg);
12411 return;
12412 }
12413
12414 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12415 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12416 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12417 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12418 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12419 goto nla_put_failure;
12420
12421 genlmsg_end(msg, hdr);
12422
12423 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12424 NL80211_MCGRP_MLME, gfp);
12425 return;
12426
12427 nla_put_failure:
12428 genlmsg_cancel(msg, hdr);
12429 nlmsg_free(msg);
12430 }
12431 EXPORT_SYMBOL(cfg80211_probe_status);
12432
12433 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12434 const u8 *frame, size_t len,
12435 int freq, int sig_dbm)
12436 {
12437 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12438 struct sk_buff *msg;
12439 void *hdr;
12440 struct cfg80211_beacon_registration *reg;
12441
12442 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12443
12444 spin_lock_bh(&rdev->beacon_registrations_lock);
12445 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12446 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12447 if (!msg) {
12448 spin_unlock_bh(&rdev->beacon_registrations_lock);
12449 return;
12450 }
12451
12452 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12453 if (!hdr)
12454 goto nla_put_failure;
12455
12456 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12457 (freq &&
12458 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12459 (sig_dbm &&
12460 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12461 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12462 goto nla_put_failure;
12463
12464 genlmsg_end(msg, hdr);
12465
12466 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12467 }
12468 spin_unlock_bh(&rdev->beacon_registrations_lock);
12469 return;
12470
12471 nla_put_failure:
12472 spin_unlock_bh(&rdev->beacon_registrations_lock);
12473 if (hdr)
12474 genlmsg_cancel(msg, hdr);
12475 nlmsg_free(msg);
12476 }
12477 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12478
12479 #ifdef CONFIG_PM
12480 static int cfg80211_net_detect_results(struct sk_buff *msg,
12481 struct cfg80211_wowlan_wakeup *wakeup)
12482 {
12483 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12484 struct nlattr *nl_results, *nl_match, *nl_freqs;
12485 int i, j;
12486
12487 nl_results = nla_nest_start(
12488 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12489 if (!nl_results)
12490 return -EMSGSIZE;
12491
12492 for (i = 0; i < nd->n_matches; i++) {
12493 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12494
12495 nl_match = nla_nest_start(msg, i);
12496 if (!nl_match)
12497 break;
12498
12499 /* The SSID attribute is optional in nl80211, but for
12500 * simplicity reasons it's always present in the
12501 * cfg80211 structure. If a driver can't pass the
12502 * SSID, that needs to be changed. A zero length SSID
12503 * is still a valid SSID (wildcard), so it cannot be
12504 * used for this purpose.
12505 */
12506 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12507 match->ssid.ssid)) {
12508 nla_nest_cancel(msg, nl_match);
12509 goto out;
12510 }
12511
12512 if (match->n_channels) {
12513 nl_freqs = nla_nest_start(
12514 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12515 if (!nl_freqs) {
12516 nla_nest_cancel(msg, nl_match);
12517 goto out;
12518 }
12519
12520 for (j = 0; j < match->n_channels; j++) {
12521 if (nla_put_u32(msg,
12522 NL80211_ATTR_WIPHY_FREQ,
12523 match->channels[j])) {
12524 nla_nest_cancel(msg, nl_freqs);
12525 nla_nest_cancel(msg, nl_match);
12526 goto out;
12527 }
12528 }
12529
12530 nla_nest_end(msg, nl_freqs);
12531 }
12532
12533 nla_nest_end(msg, nl_match);
12534 }
12535
12536 out:
12537 nla_nest_end(msg, nl_results);
12538 return 0;
12539 }
12540
12541 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12542 struct cfg80211_wowlan_wakeup *wakeup,
12543 gfp_t gfp)
12544 {
12545 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12546 struct sk_buff *msg;
12547 void *hdr;
12548 int size = 200;
12549
12550 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12551
12552 if (wakeup)
12553 size += wakeup->packet_present_len;
12554
12555 msg = nlmsg_new(size, gfp);
12556 if (!msg)
12557 return;
12558
12559 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12560 if (!hdr)
12561 goto free_msg;
12562
12563 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12564 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12565 goto free_msg;
12566
12567 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12568 wdev->netdev->ifindex))
12569 goto free_msg;
12570
12571 if (wakeup) {
12572 struct nlattr *reasons;
12573
12574 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12575 if (!reasons)
12576 goto free_msg;
12577
12578 if (wakeup->disconnect &&
12579 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12580 goto free_msg;
12581 if (wakeup->magic_pkt &&
12582 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12583 goto free_msg;
12584 if (wakeup->gtk_rekey_failure &&
12585 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12586 goto free_msg;
12587 if (wakeup->eap_identity_req &&
12588 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12589 goto free_msg;
12590 if (wakeup->four_way_handshake &&
12591 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12592 goto free_msg;
12593 if (wakeup->rfkill_release &&
12594 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12595 goto free_msg;
12596
12597 if (wakeup->pattern_idx >= 0 &&
12598 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12599 wakeup->pattern_idx))
12600 goto free_msg;
12601
12602 if (wakeup->tcp_match &&
12603 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12604 goto free_msg;
12605
12606 if (wakeup->tcp_connlost &&
12607 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12608 goto free_msg;
12609
12610 if (wakeup->tcp_nomoretokens &&
12611 nla_put_flag(msg,
12612 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12613 goto free_msg;
12614
12615 if (wakeup->packet) {
12616 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12617 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12618
12619 if (!wakeup->packet_80211) {
12620 pkt_attr =
12621 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12622 len_attr =
12623 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12624 }
12625
12626 if (wakeup->packet_len &&
12627 nla_put_u32(msg, len_attr, wakeup->packet_len))
12628 goto free_msg;
12629
12630 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12631 wakeup->packet))
12632 goto free_msg;
12633 }
12634
12635 if (wakeup->net_detect &&
12636 cfg80211_net_detect_results(msg, wakeup))
12637 goto free_msg;
12638
12639 nla_nest_end(msg, reasons);
12640 }
12641
12642 genlmsg_end(msg, hdr);
12643
12644 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12645 NL80211_MCGRP_MLME, gfp);
12646 return;
12647
12648 free_msg:
12649 nlmsg_free(msg);
12650 }
12651 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12652 #endif
12653
12654 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12655 enum nl80211_tdls_operation oper,
12656 u16 reason_code, gfp_t gfp)
12657 {
12658 struct wireless_dev *wdev = dev->ieee80211_ptr;
12659 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12660 struct sk_buff *msg;
12661 void *hdr;
12662
12663 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12664 reason_code);
12665
12666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12667 if (!msg)
12668 return;
12669
12670 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12671 if (!hdr) {
12672 nlmsg_free(msg);
12673 return;
12674 }
12675
12676 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12677 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12678 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12679 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12680 (reason_code > 0 &&
12681 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12682 goto nla_put_failure;
12683
12684 genlmsg_end(msg, hdr);
12685
12686 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12687 NL80211_MCGRP_MLME, gfp);
12688 return;
12689
12690 nla_put_failure:
12691 genlmsg_cancel(msg, hdr);
12692 nlmsg_free(msg);
12693 }
12694 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12695
12696 static int nl80211_netlink_notify(struct notifier_block * nb,
12697 unsigned long state,
12698 void *_notify)
12699 {
12700 struct netlink_notify *notify = _notify;
12701 struct cfg80211_registered_device *rdev;
12702 struct wireless_dev *wdev;
12703 struct cfg80211_beacon_registration *reg, *tmp;
12704
12705 if (state != NETLINK_URELEASE)
12706 return NOTIFY_DONE;
12707
12708 rcu_read_lock();
12709
12710 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12711 bool schedule_destroy_work = false;
12712 bool schedule_scan_stop = false;
12713 struct cfg80211_sched_scan_request *sched_scan_req =
12714 rcu_dereference(rdev->sched_scan_req);
12715
12716 if (sched_scan_req && notify->portid &&
12717 sched_scan_req->owner_nlportid == notify->portid)
12718 schedule_scan_stop = true;
12719
12720 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12721 cfg80211_mlme_unregister_socket(wdev, notify->portid);
12722
12723 if (wdev->owner_nlportid == notify->portid)
12724 schedule_destroy_work = true;
12725 }
12726
12727 spin_lock_bh(&rdev->beacon_registrations_lock);
12728 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12729 list) {
12730 if (reg->nlportid == notify->portid) {
12731 list_del(&reg->list);
12732 kfree(reg);
12733 break;
12734 }
12735 }
12736 spin_unlock_bh(&rdev->beacon_registrations_lock);
12737
12738 if (schedule_destroy_work) {
12739 struct cfg80211_iface_destroy *destroy;
12740
12741 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12742 if (destroy) {
12743 destroy->nlportid = notify->portid;
12744 spin_lock(&rdev->destroy_list_lock);
12745 list_add(&destroy->list, &rdev->destroy_list);
12746 spin_unlock(&rdev->destroy_list_lock);
12747 schedule_work(&rdev->destroy_work);
12748 }
12749 } else if (schedule_scan_stop) {
12750 sched_scan_req->owner_nlportid = 0;
12751
12752 if (rdev->ops->sched_scan_stop &&
12753 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12754 schedule_work(&rdev->sched_scan_stop_wk);
12755 }
12756 }
12757
12758 rcu_read_unlock();
12759
12760 return NOTIFY_OK;
12761 }
12762
12763 static struct notifier_block nl80211_netlink_notifier = {
12764 .notifier_call = nl80211_netlink_notify,
12765 };
12766
12767 void cfg80211_ft_event(struct net_device *netdev,
12768 struct cfg80211_ft_event_params *ft_event)
12769 {
12770 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12771 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12772 struct sk_buff *msg;
12773 void *hdr;
12774
12775 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12776
12777 if (!ft_event->target_ap)
12778 return;
12779
12780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12781 if (!msg)
12782 return;
12783
12784 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12785 if (!hdr)
12786 goto out;
12787
12788 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12789 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12790 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12791 goto out;
12792
12793 if (ft_event->ies &&
12794 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12795 goto out;
12796 if (ft_event->ric_ies &&
12797 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12798 ft_event->ric_ies))
12799 goto out;
12800
12801 genlmsg_end(msg, hdr);
12802
12803 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12804 NL80211_MCGRP_MLME, GFP_KERNEL);
12805 return;
12806 out:
12807 nlmsg_free(msg);
12808 }
12809 EXPORT_SYMBOL(cfg80211_ft_event);
12810
12811 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12812 {
12813 struct cfg80211_registered_device *rdev;
12814 struct sk_buff *msg;
12815 void *hdr;
12816 u32 nlportid;
12817
12818 rdev = wiphy_to_rdev(wdev->wiphy);
12819 if (!rdev->crit_proto_nlportid)
12820 return;
12821
12822 nlportid = rdev->crit_proto_nlportid;
12823 rdev->crit_proto_nlportid = 0;
12824
12825 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12826 if (!msg)
12827 return;
12828
12829 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12830 if (!hdr)
12831 goto nla_put_failure;
12832
12833 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12834 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12835 goto nla_put_failure;
12836
12837 genlmsg_end(msg, hdr);
12838
12839 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12840 return;
12841
12842 nla_put_failure:
12843 if (hdr)
12844 genlmsg_cancel(msg, hdr);
12845 nlmsg_free(msg);
12846
12847 }
12848 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12849
12850 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12851 {
12852 struct wiphy *wiphy = wdev->wiphy;
12853 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12854 struct sk_buff *msg;
12855 void *hdr;
12856
12857 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12858 if (!msg)
12859 return;
12860
12861 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12862 if (!hdr)
12863 goto out;
12864
12865 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12866 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12867 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12868 goto out;
12869
12870 genlmsg_end(msg, hdr);
12871
12872 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12873 NL80211_MCGRP_MLME, GFP_KERNEL);
12874 return;
12875 out:
12876 nlmsg_free(msg);
12877 }
12878
12879 /* initialisation/exit functions */
12880
12881 int nl80211_init(void)
12882 {
12883 int err;
12884
12885 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12886 nl80211_mcgrps);
12887 if (err)
12888 return err;
12889
12890 err = netlink_register_notifier(&nl80211_netlink_notifier);
12891 if (err)
12892 goto err_out;
12893
12894 return 0;
12895 err_out:
12896 genl_unregister_family(&nl80211_fam);
12897 return err;
12898 }
12899
12900 void nl80211_exit(void)
12901 {
12902 netlink_unregister_notifier(&nl80211_netlink_notifier);
12903 genl_unregister_family(&nl80211_fam);
12904 }
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