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Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac802...
[linux-2.6/btrfs-unstable.git] / net / wireless / nl80211.c
blobefaa23e562b4501045d314bcda149ece0e352a07
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* multicast groups */
51 enum nl80211_multicast_groups {
52 NL80211_MCGRP_CONFIG,
53 NL80211_MCGRP_SCAN,
54 NL80211_MCGRP_REGULATORY,
55 NL80211_MCGRP_MLME,
56 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
57 };
58
59 static const struct genl_multicast_group nl80211_mcgrps[] = {
60 [NL80211_MCGRP_CONFIG] = { .name = "config", },
61 [NL80211_MCGRP_SCAN] = { .name = "scan", },
62 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
63 [NL80211_MCGRP_MLME] = { .name = "mlme", },
64 #ifdef CONFIG_NL80211_TESTMODE
65 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
66 #endif
67 };
68
69 /* returns ERR_PTR values */
70 static struct wireless_dev *
71 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
72 {
73 struct cfg80211_registered_device *rdev;
74 struct wireless_dev *result = NULL;
75 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
76 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
77 u64 wdev_id;
78 int wiphy_idx = -1;
79 int ifidx = -1;
80
81 ASSERT_RTNL();
82
83 if (!have_ifidx && !have_wdev_id)
84 return ERR_PTR(-EINVAL);
85
86 if (have_ifidx)
87 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
88 if (have_wdev_id) {
89 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
90 wiphy_idx = wdev_id >> 32;
91 }
92
93 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
94 struct wireless_dev *wdev;
95
96 if (wiphy_net(&rdev->wiphy) != netns)
97 continue;
98
99 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
100 continue;
101
102 list_for_each_entry(wdev, &rdev->wdev_list, list) {
103 if (have_ifidx && wdev->netdev &&
104 wdev->netdev->ifindex == ifidx) {
105 result = wdev;
106 break;
107 }
108 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
109 result = wdev;
110 break;
111 }
112 }
113
114 if (result)
115 break;
116 }
117
118 if (result)
119 return result;
120 return ERR_PTR(-ENODEV);
121 }
122
123 static struct cfg80211_registered_device *
124 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
125 {
126 struct cfg80211_registered_device *rdev = NULL, *tmp;
127 struct net_device *netdev;
128
129 ASSERT_RTNL();
130
131 if (!attrs[NL80211_ATTR_WIPHY] &&
132 !attrs[NL80211_ATTR_IFINDEX] &&
133 !attrs[NL80211_ATTR_WDEV])
134 return ERR_PTR(-EINVAL);
135
136 if (attrs[NL80211_ATTR_WIPHY])
137 rdev = cfg80211_rdev_by_wiphy_idx(
138 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
139
140 if (attrs[NL80211_ATTR_WDEV]) {
141 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
142 struct wireless_dev *wdev;
143 bool found = false;
144
145 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
146 if (tmp) {
147 /* make sure wdev exists */
148 list_for_each_entry(wdev, &tmp->wdev_list, list) {
149 if (wdev->identifier != (u32)wdev_id)
150 continue;
151 found = true;
152 break;
153 }
154
155 if (!found)
156 tmp = NULL;
157
158 if (rdev && tmp != rdev)
159 return ERR_PTR(-EINVAL);
160 rdev = tmp;
161 }
162 }
163
164 if (attrs[NL80211_ATTR_IFINDEX]) {
165 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
166 netdev = dev_get_by_index(netns, ifindex);
167 if (netdev) {
168 if (netdev->ieee80211_ptr)
169 tmp = wiphy_to_dev(
170 netdev->ieee80211_ptr->wiphy);
171 else
172 tmp = NULL;
173
174 dev_put(netdev);
175
176 /* not wireless device -- return error */
177 if (!tmp)
178 return ERR_PTR(-EINVAL);
179
180 /* mismatch -- return error */
181 if (rdev && tmp != rdev)
182 return ERR_PTR(-EINVAL);
183
184 rdev = tmp;
185 }
186 }
187
188 if (!rdev)
189 return ERR_PTR(-ENODEV);
190
191 if (netns != wiphy_net(&rdev->wiphy))
192 return ERR_PTR(-ENODEV);
193
194 return rdev;
195 }
196
197 /*
198 * This function returns a pointer to the driver
199 * that the genl_info item that is passed refers to.
200 *
201 * The result of this can be a PTR_ERR and hence must
202 * be checked with IS_ERR() for errors.
203 */
204 static struct cfg80211_registered_device *
205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
206 {
207 return __cfg80211_rdev_from_attrs(netns, info->attrs);
208 }
209
210 /* policy for the attributes */
211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
212 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
213 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
214 .len = 20-1 },
215 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
216
217 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
219 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
220 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
222
223 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
224 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
226 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
228
229 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
230 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
231 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
232
233 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
234 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
235
236 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
237 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
238 .len = WLAN_MAX_KEY_LEN },
239 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
240 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
241 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
242 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
243 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
244
245 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
246 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
247 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
248 .len = IEEE80211_MAX_DATA_LEN },
249 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
252 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
253 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
255 .len = NL80211_MAX_SUPP_RATES },
256 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
257 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
258 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
259 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
260 .len = IEEE80211_MAX_MESH_ID_LEN },
261 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
262
263 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
264 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
265
266 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
267 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
268 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
270 .len = NL80211_MAX_SUPP_RATES },
271 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
272
273 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
275
276 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
277
278 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
279 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
280 .len = IEEE80211_MAX_DATA_LEN },
281 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
282 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
283
284 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
285 .len = IEEE80211_MAX_SSID_LEN },
286 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
287 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
288 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
289 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
290 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
291 [NL80211_ATTR_STA_FLAGS2] = {
292 .len = sizeof(struct nl80211_sta_flag_update),
293 },
294 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
295 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
296 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
299 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
300 [NL80211_ATTR_PID] = { .type = NLA_U32 },
301 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
302 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
303 .len = WLAN_PMKID_LEN },
304 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
305 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
306 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
307 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
308 .len = IEEE80211_MAX_DATA_LEN },
309 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
310 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
311 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
312 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
313 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
314 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
315 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
316 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
317 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
319 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
320 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
321 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
322 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
323 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
325 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
326 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
327 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
328 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
329 .len = IEEE80211_MAX_DATA_LEN },
330 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
333 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
334 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
335 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
336 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
337 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
340 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
341 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
342 .len = IEEE80211_MAX_DATA_LEN },
343 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
344 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
345 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
346 .len = NL80211_HT_CAPABILITY_LEN
347 },
348 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
349 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
350 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
351 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
352 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
353 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
354 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
355 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
356 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
357 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
358 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
359 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
360 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
361 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
362 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
363 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
364 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
365 .len = NL80211_VHT_CAPABILITY_LEN,
366 },
367 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
368 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
369 .len = IEEE80211_MAX_DATA_LEN },
370 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
371 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
372 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
373 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
374 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
375 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
376 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
377 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
378 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
379 };
380
381 /* policy for the key attributes */
382 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
383 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
384 [NL80211_KEY_IDX] = { .type = NLA_U8 },
385 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
386 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
387 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
388 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
389 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
390 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
391 };
392
393 /* policy for the key default flags */
394 static const struct nla_policy
395 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
396 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
397 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
398 };
399
400 /* policy for WoWLAN attributes */
401 static const struct nla_policy
402 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
403 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
404 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
405 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
406 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
407 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
408 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
409 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
410 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
411 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
412 };
413
414 static const struct nla_policy
415 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
416 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
417 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
418 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
419 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
420 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
421 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
422 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
423 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
424 },
425 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
426 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
427 },
428 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
429 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
430 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
431 };
432
433 /* policy for coalesce rule attributes */
434 static const struct nla_policy
435 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
436 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
437 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
438 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
439 };
440
441 /* policy for GTK rekey offload attributes */
442 static const struct nla_policy
443 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
444 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
445 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
446 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
447 };
448
449 static const struct nla_policy
450 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
451 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
452 .len = IEEE80211_MAX_SSID_LEN },
453 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
454 };
455
456 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
457 struct netlink_callback *cb,
458 struct cfg80211_registered_device **rdev,
459 struct wireless_dev **wdev)
460 {
461 int err;
462
463 rtnl_lock();
464
465 if (!cb->args[0]) {
466 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
467 nl80211_fam.attrbuf, nl80211_fam.maxattr,
468 nl80211_policy);
469 if (err)
470 goto out_unlock;
471
472 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
473 nl80211_fam.attrbuf);
474 if (IS_ERR(*wdev)) {
475 err = PTR_ERR(*wdev);
476 goto out_unlock;
477 }
478 *rdev = wiphy_to_dev((*wdev)->wiphy);
479 /* 0 is the first index - add 1 to parse only once */
480 cb->args[0] = (*rdev)->wiphy_idx + 1;
481 cb->args[1] = (*wdev)->identifier;
482 } else {
483 /* subtract the 1 again here */
484 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
485 struct wireless_dev *tmp;
486
487 if (!wiphy) {
488 err = -ENODEV;
489 goto out_unlock;
490 }
491 *rdev = wiphy_to_dev(wiphy);
492 *wdev = NULL;
493
494 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
495 if (tmp->identifier == cb->args[1]) {
496 *wdev = tmp;
497 break;
498 }
499 }
500
501 if (!*wdev) {
502 err = -ENODEV;
503 goto out_unlock;
504 }
505 }
506
507 return 0;
508 out_unlock:
509 rtnl_unlock();
510 return err;
511 }
512
513 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
514 {
515 rtnl_unlock();
516 }
517
518 /* IE validation */
519 static bool is_valid_ie_attr(const struct nlattr *attr)
520 {
521 const u8 *pos;
522 int len;
523
524 if (!attr)
525 return true;
526
527 pos = nla_data(attr);
528 len = nla_len(attr);
529
530 while (len) {
531 u8 elemlen;
532
533 if (len < 2)
534 return false;
535 len -= 2;
536
537 elemlen = pos[1];
538 if (elemlen > len)
539 return false;
540
541 len -= elemlen;
542 pos += 2 + elemlen;
543 }
544
545 return true;
546 }
547
548 /* message building helper */
549 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
550 int flags, u8 cmd)
551 {
552 /* since there is no private header just add the generic one */
553 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
554 }
555
556 static int nl80211_msg_put_channel(struct sk_buff *msg,
557 struct ieee80211_channel *chan,
558 bool large)
559 {
560 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
561 chan->center_freq))
562 goto nla_put_failure;
563
564 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
565 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
566 goto nla_put_failure;
567 if (chan->flags & IEEE80211_CHAN_NO_IR) {
568 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
569 goto nla_put_failure;
570 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
571 goto nla_put_failure;
572 }
573 if (chan->flags & IEEE80211_CHAN_RADAR) {
574 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
575 goto nla_put_failure;
576 if (large) {
577 u32 time;
578
579 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
580
581 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
582 chan->dfs_state))
583 goto nla_put_failure;
584 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
585 time))
586 goto nla_put_failure;
587 }
588 }
589
590 if (large) {
591 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
592 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
593 goto nla_put_failure;
594 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
595 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
596 goto nla_put_failure;
597 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
598 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
599 goto nla_put_failure;
600 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
601 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
602 goto nla_put_failure;
603 }
604
605 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
606 DBM_TO_MBM(chan->max_power)))
607 goto nla_put_failure;
608
609 return 0;
610
611 nla_put_failure:
612 return -ENOBUFS;
613 }
614
615 /* netlink command implementations */
616
617 struct key_parse {
618 struct key_params p;
619 int idx;
620 int type;
621 bool def, defmgmt;
622 bool def_uni, def_multi;
623 };
624
625 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
626 {
627 struct nlattr *tb[NL80211_KEY_MAX + 1];
628 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
629 nl80211_key_policy);
630 if (err)
631 return err;
632
633 k->def = !!tb[NL80211_KEY_DEFAULT];
634 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
635
636 if (k->def) {
637 k->def_uni = true;
638 k->def_multi = true;
639 }
640 if (k->defmgmt)
641 k->def_multi = true;
642
643 if (tb[NL80211_KEY_IDX])
644 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
645
646 if (tb[NL80211_KEY_DATA]) {
647 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
648 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
649 }
650
651 if (tb[NL80211_KEY_SEQ]) {
652 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
653 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
654 }
655
656 if (tb[NL80211_KEY_CIPHER])
657 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
658
659 if (tb[NL80211_KEY_TYPE]) {
660 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
661 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
662 return -EINVAL;
663 }
664
665 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
666 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
667 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
668 tb[NL80211_KEY_DEFAULT_TYPES],
669 nl80211_key_default_policy);
670 if (err)
671 return err;
672
673 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
674 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
675 }
676
677 return 0;
678 }
679
680 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
681 {
682 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
683 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
684 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
685 }
686
687 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
688 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
689 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
690 }
691
692 if (info->attrs[NL80211_ATTR_KEY_IDX])
693 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
694
695 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
696 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
697
698 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
699 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
700
701 if (k->def) {
702 k->def_uni = true;
703 k->def_multi = true;
704 }
705 if (k->defmgmt)
706 k->def_multi = true;
707
708 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
709 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
710 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
711 return -EINVAL;
712 }
713
714 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
715 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
716 int err = nla_parse_nested(
717 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
718 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
719 nl80211_key_default_policy);
720 if (err)
721 return err;
722
723 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
724 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
725 }
726
727 return 0;
728 }
729
730 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
731 {
732 int err;
733
734 memset(k, 0, sizeof(*k));
735 k->idx = -1;
736 k->type = -1;
737
738 if (info->attrs[NL80211_ATTR_KEY])
739 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
740 else
741 err = nl80211_parse_key_old(info, k);
742
743 if (err)
744 return err;
745
746 if (k->def && k->defmgmt)
747 return -EINVAL;
748
749 if (k->defmgmt) {
750 if (k->def_uni || !k->def_multi)
751 return -EINVAL;
752 }
753
754 if (k->idx != -1) {
755 if (k->defmgmt) {
756 if (k->idx < 4 || k->idx > 5)
757 return -EINVAL;
758 } else if (k->def) {
759 if (k->idx < 0 || k->idx > 3)
760 return -EINVAL;
761 } else {
762 if (k->idx < 0 || k->idx > 5)
763 return -EINVAL;
764 }
765 }
766
767 return 0;
768 }
769
770 static struct cfg80211_cached_keys *
771 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
772 struct nlattr *keys, bool *no_ht)
773 {
774 struct key_parse parse;
775 struct nlattr *key;
776 struct cfg80211_cached_keys *result;
777 int rem, err, def = 0;
778
779 result = kzalloc(sizeof(*result), GFP_KERNEL);
780 if (!result)
781 return ERR_PTR(-ENOMEM);
782
783 result->def = -1;
784 result->defmgmt = -1;
785
786 nla_for_each_nested(key, keys, rem) {
787 memset(&parse, 0, sizeof(parse));
788 parse.idx = -1;
789
790 err = nl80211_parse_key_new(key, &parse);
791 if (err)
792 goto error;
793 err = -EINVAL;
794 if (!parse.p.key)
795 goto error;
796 if (parse.idx < 0 || parse.idx > 4)
797 goto error;
798 if (parse.def) {
799 if (def)
800 goto error;
801 def = 1;
802 result->def = parse.idx;
803 if (!parse.def_uni || !parse.def_multi)
804 goto error;
805 } else if (parse.defmgmt)
806 goto error;
807 err = cfg80211_validate_key_settings(rdev, &parse.p,
808 parse.idx, false, NULL);
809 if (err)
810 goto error;
811 result->params[parse.idx].cipher = parse.p.cipher;
812 result->params[parse.idx].key_len = parse.p.key_len;
813 result->params[parse.idx].key = result->data[parse.idx];
814 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
815
816 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
817 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
818 if (no_ht)
819 *no_ht = true;
820 }
821 }
822
823 return result;
824 error:
825 kfree(result);
826 return ERR_PTR(err);
827 }
828
829 static int nl80211_key_allowed(struct wireless_dev *wdev)
830 {
831 ASSERT_WDEV_LOCK(wdev);
832
833 switch (wdev->iftype) {
834 case NL80211_IFTYPE_AP:
835 case NL80211_IFTYPE_AP_VLAN:
836 case NL80211_IFTYPE_P2P_GO:
837 case NL80211_IFTYPE_MESH_POINT:
838 break;
839 case NL80211_IFTYPE_ADHOC:
840 case NL80211_IFTYPE_STATION:
841 case NL80211_IFTYPE_P2P_CLIENT:
842 if (!wdev->current_bss)
843 return -ENOLINK;
844 break;
845 default:
846 return -EINVAL;
847 }
848
849 return 0;
850 }
851
852 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
853 {
854 struct nlattr *nl_modes = nla_nest_start(msg, attr);
855 int i;
856
857 if (!nl_modes)
858 goto nla_put_failure;
859
860 i = 0;
861 while (ifmodes) {
862 if ((ifmodes & 1) && nla_put_flag(msg, i))
863 goto nla_put_failure;
864 ifmodes >>= 1;
865 i++;
866 }
867
868 nla_nest_end(msg, nl_modes);
869 return 0;
870
871 nla_put_failure:
872 return -ENOBUFS;
873 }
874
875 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
876 struct sk_buff *msg,
877 bool large)
878 {
879 struct nlattr *nl_combis;
880 int i, j;
881
882 nl_combis = nla_nest_start(msg,
883 NL80211_ATTR_INTERFACE_COMBINATIONS);
884 if (!nl_combis)
885 goto nla_put_failure;
886
887 for (i = 0; i < wiphy->n_iface_combinations; i++) {
888 const struct ieee80211_iface_combination *c;
889 struct nlattr *nl_combi, *nl_limits;
890
891 c = &wiphy->iface_combinations[i];
892
893 nl_combi = nla_nest_start(msg, i + 1);
894 if (!nl_combi)
895 goto nla_put_failure;
896
897 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
898 if (!nl_limits)
899 goto nla_put_failure;
900
901 for (j = 0; j < c->n_limits; j++) {
902 struct nlattr *nl_limit;
903
904 nl_limit = nla_nest_start(msg, j + 1);
905 if (!nl_limit)
906 goto nla_put_failure;
907 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
908 c->limits[j].max))
909 goto nla_put_failure;
910 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
911 c->limits[j].types))
912 goto nla_put_failure;
913 nla_nest_end(msg, nl_limit);
914 }
915
916 nla_nest_end(msg, nl_limits);
917
918 if (c->beacon_int_infra_match &&
919 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
920 goto nla_put_failure;
921 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
922 c->num_different_channels) ||
923 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
924 c->max_interfaces))
925 goto nla_put_failure;
926 if (large &&
927 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
928 c->radar_detect_widths))
929 goto nla_put_failure;
930
931 nla_nest_end(msg, nl_combi);
932 }
933
934 nla_nest_end(msg, nl_combis);
935
936 return 0;
937 nla_put_failure:
938 return -ENOBUFS;
939 }
940
941 #ifdef CONFIG_PM
942 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
943 struct sk_buff *msg)
944 {
945 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
946 struct nlattr *nl_tcp;
947
948 if (!tcp)
949 return 0;
950
951 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
952 if (!nl_tcp)
953 return -ENOBUFS;
954
955 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
956 tcp->data_payload_max))
957 return -ENOBUFS;
958
959 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
960 tcp->data_payload_max))
961 return -ENOBUFS;
962
963 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
964 return -ENOBUFS;
965
966 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
967 sizeof(*tcp->tok), tcp->tok))
968 return -ENOBUFS;
969
970 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
971 tcp->data_interval_max))
972 return -ENOBUFS;
973
974 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
975 tcp->wake_payload_max))
976 return -ENOBUFS;
977
978 nla_nest_end(msg, nl_tcp);
979 return 0;
980 }
981
982 static int nl80211_send_wowlan(struct sk_buff *msg,
983 struct cfg80211_registered_device *dev,
984 bool large)
985 {
986 struct nlattr *nl_wowlan;
987
988 if (!dev->wiphy.wowlan)
989 return 0;
990
991 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
992 if (!nl_wowlan)
993 return -ENOBUFS;
994
995 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
996 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
997 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
998 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
999 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1000 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1001 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1002 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1003 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1004 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1005 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1006 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1007 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1008 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1009 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1010 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1011 return -ENOBUFS;
1012
1013 if (dev->wiphy.wowlan->n_patterns) {
1014 struct nl80211_pattern_support pat = {
1015 .max_patterns = dev->wiphy.wowlan->n_patterns,
1016 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
1017 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
1018 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1019 };
1020
1021 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1022 sizeof(pat), &pat))
1023 return -ENOBUFS;
1024 }
1025
1026 if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1027 return -ENOBUFS;
1028
1029 nla_nest_end(msg, nl_wowlan);
1030
1031 return 0;
1032 }
1033 #endif
1034
1035 static int nl80211_send_coalesce(struct sk_buff *msg,
1036 struct cfg80211_registered_device *dev)
1037 {
1038 struct nl80211_coalesce_rule_support rule;
1039
1040 if (!dev->wiphy.coalesce)
1041 return 0;
1042
1043 rule.max_rules = dev->wiphy.coalesce->n_rules;
1044 rule.max_delay = dev->wiphy.coalesce->max_delay;
1045 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1046 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1047 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1048 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1049
1050 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1051 return -ENOBUFS;
1052
1053 return 0;
1054 }
1055
1056 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1057 struct ieee80211_supported_band *sband)
1058 {
1059 struct nlattr *nl_rates, *nl_rate;
1060 struct ieee80211_rate *rate;
1061 int i;
1062
1063 /* add HT info */
1064 if (sband->ht_cap.ht_supported &&
1065 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1066 sizeof(sband->ht_cap.mcs),
1067 &sband->ht_cap.mcs) ||
1068 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1069 sband->ht_cap.cap) ||
1070 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1071 sband->ht_cap.ampdu_factor) ||
1072 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1073 sband->ht_cap.ampdu_density)))
1074 return -ENOBUFS;
1075
1076 /* add VHT info */
1077 if (sband->vht_cap.vht_supported &&
1078 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1079 sizeof(sband->vht_cap.vht_mcs),
1080 &sband->vht_cap.vht_mcs) ||
1081 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1082 sband->vht_cap.cap)))
1083 return -ENOBUFS;
1084
1085 /* add bitrates */
1086 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1087 if (!nl_rates)
1088 return -ENOBUFS;
1089
1090 for (i = 0; i < sband->n_bitrates; i++) {
1091 nl_rate = nla_nest_start(msg, i);
1092 if (!nl_rate)
1093 return -ENOBUFS;
1094
1095 rate = &sband->bitrates[i];
1096 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1097 rate->bitrate))
1098 return -ENOBUFS;
1099 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1100 nla_put_flag(msg,
1101 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1102 return -ENOBUFS;
1103
1104 nla_nest_end(msg, nl_rate);
1105 }
1106
1107 nla_nest_end(msg, nl_rates);
1108
1109 return 0;
1110 }
1111
1112 static int
1113 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1114 const struct ieee80211_txrx_stypes *mgmt_stypes)
1115 {
1116 u16 stypes;
1117 struct nlattr *nl_ftypes, *nl_ifs;
1118 enum nl80211_iftype ift;
1119 int i;
1120
1121 if (!mgmt_stypes)
1122 return 0;
1123
1124 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1125 if (!nl_ifs)
1126 return -ENOBUFS;
1127
1128 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1129 nl_ftypes = nla_nest_start(msg, ift);
1130 if (!nl_ftypes)
1131 return -ENOBUFS;
1132 i = 0;
1133 stypes = mgmt_stypes[ift].tx;
1134 while (stypes) {
1135 if ((stypes & 1) &&
1136 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1137 (i << 4) | IEEE80211_FTYPE_MGMT))
1138 return -ENOBUFS;
1139 stypes >>= 1;
1140 i++;
1141 }
1142 nla_nest_end(msg, nl_ftypes);
1143 }
1144
1145 nla_nest_end(msg, nl_ifs);
1146
1147 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1148 if (!nl_ifs)
1149 return -ENOBUFS;
1150
1151 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1152 nl_ftypes = nla_nest_start(msg, ift);
1153 if (!nl_ftypes)
1154 return -ENOBUFS;
1155 i = 0;
1156 stypes = mgmt_stypes[ift].rx;
1157 while (stypes) {
1158 if ((stypes & 1) &&
1159 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1160 (i << 4) | IEEE80211_FTYPE_MGMT))
1161 return -ENOBUFS;
1162 stypes >>= 1;
1163 i++;
1164 }
1165 nla_nest_end(msg, nl_ftypes);
1166 }
1167 nla_nest_end(msg, nl_ifs);
1168
1169 return 0;
1170 }
1171
1172 struct nl80211_dump_wiphy_state {
1173 s64 filter_wiphy;
1174 long start;
1175 long split_start, band_start, chan_start;
1176 bool split;
1177 };
1178
1179 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1180 struct sk_buff *msg, u32 portid, u32 seq,
1181 int flags, struct nl80211_dump_wiphy_state *state)
1182 {
1183 void *hdr;
1184 struct nlattr *nl_bands, *nl_band;
1185 struct nlattr *nl_freqs, *nl_freq;
1186 struct nlattr *nl_cmds;
1187 enum ieee80211_band band;
1188 struct ieee80211_channel *chan;
1189 int i;
1190 const struct ieee80211_txrx_stypes *mgmt_stypes =
1191 dev->wiphy.mgmt_stypes;
1192 u32 features;
1193
1194 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1195 if (!hdr)
1196 return -ENOBUFS;
1197
1198 if (WARN_ON(!state))
1199 return -EINVAL;
1200
1201 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1202 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1203 wiphy_name(&dev->wiphy)) ||
1204 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1205 cfg80211_rdev_list_generation))
1206 goto nla_put_failure;
1207
1208 switch (state->split_start) {
1209 case 0:
1210 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1211 dev->wiphy.retry_short) ||
1212 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1213 dev->wiphy.retry_long) ||
1214 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1215 dev->wiphy.frag_threshold) ||
1216 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1217 dev->wiphy.rts_threshold) ||
1218 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1219 dev->wiphy.coverage_class) ||
1220 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1221 dev->wiphy.max_scan_ssids) ||
1222 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1223 dev->wiphy.max_sched_scan_ssids) ||
1224 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1225 dev->wiphy.max_scan_ie_len) ||
1226 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1227 dev->wiphy.max_sched_scan_ie_len) ||
1228 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1229 dev->wiphy.max_match_sets))
1230 goto nla_put_failure;
1231
1232 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1233 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1234 goto nla_put_failure;
1235 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1236 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1237 goto nla_put_failure;
1238 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1239 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1240 goto nla_put_failure;
1241 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1242 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1243 goto nla_put_failure;
1244 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1245 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1246 goto nla_put_failure;
1247 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1248 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1249 goto nla_put_failure;
1250 state->split_start++;
1251 if (state->split)
1252 break;
1253 case 1:
1254 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1255 sizeof(u32) * dev->wiphy.n_cipher_suites,
1256 dev->wiphy.cipher_suites))
1257 goto nla_put_failure;
1258
1259 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1260 dev->wiphy.max_num_pmkids))
1261 goto nla_put_failure;
1262
1263 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1264 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1265 goto nla_put_failure;
1266
1267 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1268 dev->wiphy.available_antennas_tx) ||
1269 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1270 dev->wiphy.available_antennas_rx))
1271 goto nla_put_failure;
1272
1273 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1274 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1275 dev->wiphy.probe_resp_offload))
1276 goto nla_put_failure;
1277
1278 if ((dev->wiphy.available_antennas_tx ||
1279 dev->wiphy.available_antennas_rx) &&
1280 dev->ops->get_antenna) {
1281 u32 tx_ant = 0, rx_ant = 0;
1282 int res;
1283 res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1284 if (!res) {
1285 if (nla_put_u32(msg,
1286 NL80211_ATTR_WIPHY_ANTENNA_TX,
1287 tx_ant) ||
1288 nla_put_u32(msg,
1289 NL80211_ATTR_WIPHY_ANTENNA_RX,
1290 rx_ant))
1291 goto nla_put_failure;
1292 }
1293 }
1294
1295 state->split_start++;
1296 if (state->split)
1297 break;
1298 case 2:
1299 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1300 dev->wiphy.interface_modes))
1301 goto nla_put_failure;
1302 state->split_start++;
1303 if (state->split)
1304 break;
1305 case 3:
1306 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1307 if (!nl_bands)
1308 goto nla_put_failure;
1309
1310 for (band = state->band_start;
1311 band < IEEE80211_NUM_BANDS; band++) {
1312 struct ieee80211_supported_band *sband;
1313
1314 sband = dev->wiphy.bands[band];
1315
1316 if (!sband)
1317 continue;
1318
1319 nl_band = nla_nest_start(msg, band);
1320 if (!nl_band)
1321 goto nla_put_failure;
1322
1323 switch (state->chan_start) {
1324 case 0:
1325 if (nl80211_send_band_rateinfo(msg, sband))
1326 goto nla_put_failure;
1327 state->chan_start++;
1328 if (state->split)
1329 break;
1330 default:
1331 /* add frequencies */
1332 nl_freqs = nla_nest_start(
1333 msg, NL80211_BAND_ATTR_FREQS);
1334 if (!nl_freqs)
1335 goto nla_put_failure;
1336
1337 for (i = state->chan_start - 1;
1338 i < sband->n_channels;
1339 i++) {
1340 nl_freq = nla_nest_start(msg, i);
1341 if (!nl_freq)
1342 goto nla_put_failure;
1343
1344 chan = &sband->channels[i];
1345
1346 if (nl80211_msg_put_channel(
1347 msg, chan,
1348 state->split))
1349 goto nla_put_failure;
1350
1351 nla_nest_end(msg, nl_freq);
1352 if (state->split)
1353 break;
1354 }
1355 if (i < sband->n_channels)
1356 state->chan_start = i + 2;
1357 else
1358 state->chan_start = 0;
1359 nla_nest_end(msg, nl_freqs);
1360 }
1361
1362 nla_nest_end(msg, nl_band);
1363
1364 if (state->split) {
1365 /* start again here */
1366 if (state->chan_start)
1367 band--;
1368 break;
1369 }
1370 }
1371 nla_nest_end(msg, nl_bands);
1372
1373 if (band < IEEE80211_NUM_BANDS)
1374 state->band_start = band + 1;
1375 else
1376 state->band_start = 0;
1377
1378 /* if bands & channels are done, continue outside */
1379 if (state->band_start == 0 && state->chan_start == 0)
1380 state->split_start++;
1381 if (state->split)
1382 break;
1383 case 4:
1384 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1385 if (!nl_cmds)
1386 goto nla_put_failure;
1387
1388 i = 0;
1389 #define CMD(op, n) \
1390 do { \
1391 if (dev->ops->op) { \
1392 i++; \
1393 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1394 goto nla_put_failure; \
1395 } \
1396 } while (0)
1397
1398 CMD(add_virtual_intf, NEW_INTERFACE);
1399 CMD(change_virtual_intf, SET_INTERFACE);
1400 CMD(add_key, NEW_KEY);
1401 CMD(start_ap, START_AP);
1402 CMD(add_station, NEW_STATION);
1403 CMD(add_mpath, NEW_MPATH);
1404 CMD(update_mesh_config, SET_MESH_CONFIG);
1405 CMD(change_bss, SET_BSS);
1406 CMD(auth, AUTHENTICATE);
1407 CMD(assoc, ASSOCIATE);
1408 CMD(deauth, DEAUTHENTICATE);
1409 CMD(disassoc, DISASSOCIATE);
1410 CMD(join_ibss, JOIN_IBSS);
1411 CMD(join_mesh, JOIN_MESH);
1412 CMD(set_pmksa, SET_PMKSA);
1413 CMD(del_pmksa, DEL_PMKSA);
1414 CMD(flush_pmksa, FLUSH_PMKSA);
1415 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1416 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1417 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1418 CMD(mgmt_tx, FRAME);
1419 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1420 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1421 i++;
1422 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1423 goto nla_put_failure;
1424 }
1425 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1426 dev->ops->join_mesh) {
1427 i++;
1428 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1429 goto nla_put_failure;
1430 }
1431 CMD(set_wds_peer, SET_WDS_PEER);
1432 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1433 CMD(tdls_mgmt, TDLS_MGMT);
1434 CMD(tdls_oper, TDLS_OPER);
1435 }
1436 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1437 CMD(sched_scan_start, START_SCHED_SCAN);
1438 CMD(probe_client, PROBE_CLIENT);
1439 CMD(set_noack_map, SET_NOACK_MAP);
1440 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1441 i++;
1442 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1443 goto nla_put_failure;
1444 }
1445 CMD(start_p2p_device, START_P2P_DEVICE);
1446 CMD(set_mcast_rate, SET_MCAST_RATE);
1447 if (state->split) {
1448 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1449 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1450 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1451 CMD(channel_switch, CHANNEL_SWITCH);
1452 }
1453
1454 #ifdef CONFIG_NL80211_TESTMODE
1455 CMD(testmode_cmd, TESTMODE);
1456 #endif
1457
1458 #undef CMD
1459
1460 if (dev->ops->connect || dev->ops->auth) {
1461 i++;
1462 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1463 goto nla_put_failure;
1464 }
1465
1466 if (dev->ops->disconnect || dev->ops->deauth) {
1467 i++;
1468 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1469 goto nla_put_failure;
1470 }
1471
1472 nla_nest_end(msg, nl_cmds);
1473 state->split_start++;
1474 if (state->split)
1475 break;
1476 case 5:
1477 if (dev->ops->remain_on_channel &&
1478 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1479 nla_put_u32(msg,
1480 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1481 dev->wiphy.max_remain_on_channel_duration))
1482 goto nla_put_failure;
1483
1484 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1485 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1486 goto nla_put_failure;
1487
1488 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1489 goto nla_put_failure;
1490 state->split_start++;
1491 if (state->split)
1492 break;
1493 case 6:
1494 #ifdef CONFIG_PM
1495 if (nl80211_send_wowlan(msg, dev, state->split))
1496 goto nla_put_failure;
1497 state->split_start++;
1498 if (state->split)
1499 break;
1500 #else
1501 state->split_start++;
1502 #endif
1503 case 7:
1504 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1505 dev->wiphy.software_iftypes))
1506 goto nla_put_failure;
1507
1508 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1509 state->split))
1510 goto nla_put_failure;
1511
1512 state->split_start++;
1513 if (state->split)
1514 break;
1515 case 8:
1516 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1517 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1518 dev->wiphy.ap_sme_capa))
1519 goto nla_put_failure;
1520
1521 features = dev->wiphy.features;
1522 /*
1523 * We can only add the per-channel limit information if the
1524 * dump is split, otherwise it makes it too big. Therefore
1525 * only advertise it in that case.
1526 */
1527 if (state->split)
1528 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1529 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1530 goto nla_put_failure;
1531
1532 if (dev->wiphy.ht_capa_mod_mask &&
1533 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1534 sizeof(*dev->wiphy.ht_capa_mod_mask),
1535 dev->wiphy.ht_capa_mod_mask))
1536 goto nla_put_failure;
1537
1538 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1539 dev->wiphy.max_acl_mac_addrs &&
1540 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1541 dev->wiphy.max_acl_mac_addrs))
1542 goto nla_put_failure;
1543
1544 /*
1545 * Any information below this point is only available to
1546 * applications that can deal with it being split. This
1547 * helps ensure that newly added capabilities don't break
1548 * older tools by overrunning their buffers.
1549 *
1550 * We still increment split_start so that in the split
1551 * case we'll continue with more data in the next round,
1552 * but break unconditionally so unsplit data stops here.
1553 */
1554 state->split_start++;
1555 break;
1556 case 9:
1557 if (dev->wiphy.extended_capabilities &&
1558 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1559 dev->wiphy.extended_capabilities_len,
1560 dev->wiphy.extended_capabilities) ||
1561 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1562 dev->wiphy.extended_capabilities_len,
1563 dev->wiphy.extended_capabilities_mask)))
1564 goto nla_put_failure;
1565
1566 if (dev->wiphy.vht_capa_mod_mask &&
1567 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1568 sizeof(*dev->wiphy.vht_capa_mod_mask),
1569 dev->wiphy.vht_capa_mod_mask))
1570 goto nla_put_failure;
1571
1572 state->split_start++;
1573 break;
1574 case 10:
1575 if (nl80211_send_coalesce(msg, dev))
1576 goto nla_put_failure;
1577
1578 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1579 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1580 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1581 goto nla_put_failure;
1582
1583 /* done */
1584 state->split_start = 0;
1585 break;
1586 }
1587 return genlmsg_end(msg, hdr);
1588
1589 nla_put_failure:
1590 genlmsg_cancel(msg, hdr);
1591 return -EMSGSIZE;
1592 }
1593
1594 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1595 struct netlink_callback *cb,
1596 struct nl80211_dump_wiphy_state *state)
1597 {
1598 struct nlattr **tb = nl80211_fam.attrbuf;
1599 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1600 tb, nl80211_fam.maxattr, nl80211_policy);
1601 /* ignore parse errors for backward compatibility */
1602 if (ret)
1603 return 0;
1604
1605 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1606 if (tb[NL80211_ATTR_WIPHY])
1607 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1608 if (tb[NL80211_ATTR_WDEV])
1609 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1610 if (tb[NL80211_ATTR_IFINDEX]) {
1611 struct net_device *netdev;
1612 struct cfg80211_registered_device *rdev;
1613 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1614
1615 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1616 if (!netdev)
1617 return -ENODEV;
1618 if (netdev->ieee80211_ptr) {
1619 rdev = wiphy_to_dev(
1620 netdev->ieee80211_ptr->wiphy);
1621 state->filter_wiphy = rdev->wiphy_idx;
1622 }
1623 dev_put(netdev);
1624 }
1625
1626 return 0;
1627 }
1628
1629 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1630 {
1631 int idx = 0, ret;
1632 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1633 struct cfg80211_registered_device *dev;
1634
1635 rtnl_lock();
1636 if (!state) {
1637 state = kzalloc(sizeof(*state), GFP_KERNEL);
1638 if (!state) {
1639 rtnl_unlock();
1640 return -ENOMEM;
1641 }
1642 state->filter_wiphy = -1;
1643 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1644 if (ret) {
1645 kfree(state);
1646 rtnl_unlock();
1647 return ret;
1648 }
1649 cb->args[0] = (long)state;
1650 }
1651
1652 list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1653 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1654 continue;
1655 if (++idx <= state->start)
1656 continue;
1657 if (state->filter_wiphy != -1 &&
1658 state->filter_wiphy != dev->wiphy_idx)
1659 continue;
1660 /* attempt to fit multiple wiphy data chunks into the skb */
1661 do {
1662 ret = nl80211_send_wiphy(dev, skb,
1663 NETLINK_CB(cb->skb).portid,
1664 cb->nlh->nlmsg_seq,
1665 NLM_F_MULTI, state);
1666 if (ret < 0) {
1667 /*
1668 * If sending the wiphy data didn't fit (ENOBUFS
1669 * or EMSGSIZE returned), this SKB is still
1670 * empty (so it's not too big because another
1671 * wiphy dataset is already in the skb) and
1672 * we've not tried to adjust the dump allocation
1673 * yet ... then adjust the alloc size to be
1674 * bigger, and return 1 but with the empty skb.
1675 * This results in an empty message being RX'ed
1676 * in userspace, but that is ignored.
1677 *
1678 * We can then retry with the larger buffer.
1679 */
1680 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1681 !skb->len &&
1682 cb->min_dump_alloc < 4096) {
1683 cb->min_dump_alloc = 4096;
1684 rtnl_unlock();
1685 return 1;
1686 }
1687 idx--;
1688 break;
1689 }
1690 } while (state->split_start > 0);
1691 break;
1692 }
1693 rtnl_unlock();
1694
1695 state->start = idx;
1696
1697 return skb->len;
1698 }
1699
1700 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1701 {
1702 kfree((void *)cb->args[0]);
1703 return 0;
1704 }
1705
1706 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1707 {
1708 struct sk_buff *msg;
1709 struct cfg80211_registered_device *dev = info->user_ptr[0];
1710 struct nl80211_dump_wiphy_state state = {};
1711
1712 msg = nlmsg_new(4096, GFP_KERNEL);
1713 if (!msg)
1714 return -ENOMEM;
1715
1716 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1717 &state) < 0) {
1718 nlmsg_free(msg);
1719 return -ENOBUFS;
1720 }
1721
1722 return genlmsg_reply(msg, info);
1723 }
1724
1725 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1726 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1727 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1728 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1729 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1730 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1731 };
1732
1733 static int parse_txq_params(struct nlattr *tb[],
1734 struct ieee80211_txq_params *txq_params)
1735 {
1736 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1737 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1738 !tb[NL80211_TXQ_ATTR_AIFS])
1739 return -EINVAL;
1740
1741 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1742 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1743 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1744 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1745 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1746
1747 if (txq_params->ac >= NL80211_NUM_ACS)
1748 return -EINVAL;
1749
1750 return 0;
1751 }
1752
1753 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1754 {
1755 /*
1756 * You can only set the channel explicitly for WDS interfaces,
1757 * all others have their channel managed via their respective
1758 * "establish a connection" command (connect, join, ...)
1759 *
1760 * For AP/GO and mesh mode, the channel can be set with the
1761 * channel userspace API, but is only stored and passed to the
1762 * low-level driver when the AP starts or the mesh is joined.
1763 * This is for backward compatibility, userspace can also give
1764 * the channel in the start-ap or join-mesh commands instead.
1765 *
1766 * Monitors are special as they are normally slaved to
1767 * whatever else is going on, so they have their own special
1768 * operation to set the monitor channel if possible.
1769 */
1770 return !wdev ||
1771 wdev->iftype == NL80211_IFTYPE_AP ||
1772 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1773 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1774 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1775 }
1776
1777 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1778 struct genl_info *info,
1779 struct cfg80211_chan_def *chandef)
1780 {
1781 u32 control_freq;
1782
1783 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1784 return -EINVAL;
1785
1786 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1787
1788 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1789 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1790 chandef->center_freq1 = control_freq;
1791 chandef->center_freq2 = 0;
1792
1793 /* Primary channel not allowed */
1794 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1795 return -EINVAL;
1796
1797 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1798 enum nl80211_channel_type chantype;
1799
1800 chantype = nla_get_u32(
1801 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1802
1803 switch (chantype) {
1804 case NL80211_CHAN_NO_HT:
1805 case NL80211_CHAN_HT20:
1806 case NL80211_CHAN_HT40PLUS:
1807 case NL80211_CHAN_HT40MINUS:
1808 cfg80211_chandef_create(chandef, chandef->chan,
1809 chantype);
1810 break;
1811 default:
1812 return -EINVAL;
1813 }
1814 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1815 chandef->width =
1816 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1817 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1818 chandef->center_freq1 =
1819 nla_get_u32(
1820 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1821 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1822 chandef->center_freq2 =
1823 nla_get_u32(
1824 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1825 }
1826
1827 if (!cfg80211_chandef_valid(chandef))
1828 return -EINVAL;
1829
1830 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1831 IEEE80211_CHAN_DISABLED))
1832 return -EINVAL;
1833
1834 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1835 chandef->width == NL80211_CHAN_WIDTH_10) &&
1836 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1837 return -EINVAL;
1838
1839 return 0;
1840 }
1841
1842 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1843 struct wireless_dev *wdev,
1844 struct genl_info *info)
1845 {
1846 struct cfg80211_chan_def chandef;
1847 int result;
1848 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1849
1850 if (wdev)
1851 iftype = wdev->iftype;
1852
1853 if (!nl80211_can_set_dev_channel(wdev))
1854 return -EOPNOTSUPP;
1855
1856 result = nl80211_parse_chandef(rdev, info, &chandef);
1857 if (result)
1858 return result;
1859
1860 switch (iftype) {
1861 case NL80211_IFTYPE_AP:
1862 case NL80211_IFTYPE_P2P_GO:
1863 if (wdev->beacon_interval) {
1864 result = -EBUSY;
1865 break;
1866 }
1867 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1868 result = -EINVAL;
1869 break;
1870 }
1871 wdev->preset_chandef = chandef;
1872 result = 0;
1873 break;
1874 case NL80211_IFTYPE_MESH_POINT:
1875 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1876 break;
1877 case NL80211_IFTYPE_MONITOR:
1878 result = cfg80211_set_monitor_channel(rdev, &chandef);
1879 break;
1880 default:
1881 result = -EINVAL;
1882 }
1883
1884 return result;
1885 }
1886
1887 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1888 {
1889 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1890 struct net_device *netdev = info->user_ptr[1];
1891
1892 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1893 }
1894
1895 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1896 {
1897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1898 struct net_device *dev = info->user_ptr[1];
1899 struct wireless_dev *wdev = dev->ieee80211_ptr;
1900 const u8 *bssid;
1901
1902 if (!info->attrs[NL80211_ATTR_MAC])
1903 return -EINVAL;
1904
1905 if (netif_running(dev))
1906 return -EBUSY;
1907
1908 if (!rdev->ops->set_wds_peer)
1909 return -EOPNOTSUPP;
1910
1911 if (wdev->iftype != NL80211_IFTYPE_WDS)
1912 return -EOPNOTSUPP;
1913
1914 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1915 return rdev_set_wds_peer(rdev, dev, bssid);
1916 }
1917
1918
1919 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1920 {
1921 struct cfg80211_registered_device *rdev;
1922 struct net_device *netdev = NULL;
1923 struct wireless_dev *wdev;
1924 int result = 0, rem_txq_params = 0;
1925 struct nlattr *nl_txq_params;
1926 u32 changed;
1927 u8 retry_short = 0, retry_long = 0;
1928 u32 frag_threshold = 0, rts_threshold = 0;
1929 u8 coverage_class = 0;
1930
1931 ASSERT_RTNL();
1932
1933 /*
1934 * Try to find the wiphy and netdev. Normally this
1935 * function shouldn't need the netdev, but this is
1936 * done for backward compatibility -- previously
1937 * setting the channel was done per wiphy, but now
1938 * it is per netdev. Previous userland like hostapd
1939 * also passed a netdev to set_wiphy, so that it is
1940 * possible to let that go to the right netdev!
1941 */
1942
1943 if (info->attrs[NL80211_ATTR_IFINDEX]) {
1944 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1945
1946 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1947 if (netdev && netdev->ieee80211_ptr)
1948 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1949 else
1950 netdev = NULL;
1951 }
1952
1953 if (!netdev) {
1954 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1955 info->attrs);
1956 if (IS_ERR(rdev))
1957 return PTR_ERR(rdev);
1958 wdev = NULL;
1959 netdev = NULL;
1960 result = 0;
1961 } else
1962 wdev = netdev->ieee80211_ptr;
1963
1964 /*
1965 * end workaround code, by now the rdev is available
1966 * and locked, and wdev may or may not be NULL.
1967 */
1968
1969 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1970 result = cfg80211_dev_rename(
1971 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1972
1973 if (result)
1974 goto bad_res;
1975
1976 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1977 struct ieee80211_txq_params txq_params;
1978 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1979
1980 if (!rdev->ops->set_txq_params) {
1981 result = -EOPNOTSUPP;
1982 goto bad_res;
1983 }
1984
1985 if (!netdev) {
1986 result = -EINVAL;
1987 goto bad_res;
1988 }
1989
1990 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1991 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1992 result = -EINVAL;
1993 goto bad_res;
1994 }
1995
1996 if (!netif_running(netdev)) {
1997 result = -ENETDOWN;
1998 goto bad_res;
1999 }
2000
2001 nla_for_each_nested(nl_txq_params,
2002 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2003 rem_txq_params) {
2004 nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2005 nla_data(nl_txq_params),
2006 nla_len(nl_txq_params),
2007 txq_params_policy);
2008 result = parse_txq_params(tb, &txq_params);
2009 if (result)
2010 goto bad_res;
2011
2012 result = rdev_set_txq_params(rdev, netdev,
2013 &txq_params);
2014 if (result)
2015 goto bad_res;
2016 }
2017 }
2018
2019 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2020 result = __nl80211_set_channel(rdev,
2021 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2022 info);
2023 if (result)
2024 goto bad_res;
2025 }
2026
2027 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2028 struct wireless_dev *txp_wdev = wdev;
2029 enum nl80211_tx_power_setting type;
2030 int idx, mbm = 0;
2031
2032 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2033 txp_wdev = NULL;
2034
2035 if (!rdev->ops->set_tx_power) {
2036 result = -EOPNOTSUPP;
2037 goto bad_res;
2038 }
2039
2040 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2041 type = nla_get_u32(info->attrs[idx]);
2042
2043 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2044 (type != NL80211_TX_POWER_AUTOMATIC)) {
2045 result = -EINVAL;
2046 goto bad_res;
2047 }
2048
2049 if (type != NL80211_TX_POWER_AUTOMATIC) {
2050 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2051 mbm = nla_get_u32(info->attrs[idx]);
2052 }
2053
2054 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2055 if (result)
2056 goto bad_res;
2057 }
2058
2059 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2060 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2061 u32 tx_ant, rx_ant;
2062 if ((!rdev->wiphy.available_antennas_tx &&
2063 !rdev->wiphy.available_antennas_rx) ||
2064 !rdev->ops->set_antenna) {
2065 result = -EOPNOTSUPP;
2066 goto bad_res;
2067 }
2068
2069 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2070 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2071
2072 /* reject antenna configurations which don't match the
2073 * available antenna masks, except for the "all" mask */
2074 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2075 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2076 result = -EINVAL;
2077 goto bad_res;
2078 }
2079
2080 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2081 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2082
2083 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2084 if (result)
2085 goto bad_res;
2086 }
2087
2088 changed = 0;
2089
2090 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2091 retry_short = nla_get_u8(
2092 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2093 if (retry_short == 0) {
2094 result = -EINVAL;
2095 goto bad_res;
2096 }
2097 changed |= WIPHY_PARAM_RETRY_SHORT;
2098 }
2099
2100 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2101 retry_long = nla_get_u8(
2102 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2103 if (retry_long == 0) {
2104 result = -EINVAL;
2105 goto bad_res;
2106 }
2107 changed |= WIPHY_PARAM_RETRY_LONG;
2108 }
2109
2110 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2111 frag_threshold = nla_get_u32(
2112 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2113 if (frag_threshold < 256) {
2114 result = -EINVAL;
2115 goto bad_res;
2116 }
2117 if (frag_threshold != (u32) -1) {
2118 /*
2119 * Fragments (apart from the last one) are required to
2120 * have even length. Make the fragmentation code
2121 * simpler by stripping LSB should someone try to use
2122 * odd threshold value.
2123 */
2124 frag_threshold &= ~0x1;
2125 }
2126 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2127 }
2128
2129 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2130 rts_threshold = nla_get_u32(
2131 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2132 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2133 }
2134
2135 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2136 coverage_class = nla_get_u8(
2137 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2138 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2139 }
2140
2141 if (changed) {
2142 u8 old_retry_short, old_retry_long;
2143 u32 old_frag_threshold, old_rts_threshold;
2144 u8 old_coverage_class;
2145
2146 if (!rdev->ops->set_wiphy_params) {
2147 result = -EOPNOTSUPP;
2148 goto bad_res;
2149 }
2150
2151 old_retry_short = rdev->wiphy.retry_short;
2152 old_retry_long = rdev->wiphy.retry_long;
2153 old_frag_threshold = rdev->wiphy.frag_threshold;
2154 old_rts_threshold = rdev->wiphy.rts_threshold;
2155 old_coverage_class = rdev->wiphy.coverage_class;
2156
2157 if (changed & WIPHY_PARAM_RETRY_SHORT)
2158 rdev->wiphy.retry_short = retry_short;
2159 if (changed & WIPHY_PARAM_RETRY_LONG)
2160 rdev->wiphy.retry_long = retry_long;
2161 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2162 rdev->wiphy.frag_threshold = frag_threshold;
2163 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2164 rdev->wiphy.rts_threshold = rts_threshold;
2165 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2166 rdev->wiphy.coverage_class = coverage_class;
2167
2168 result = rdev_set_wiphy_params(rdev, changed);
2169 if (result) {
2170 rdev->wiphy.retry_short = old_retry_short;
2171 rdev->wiphy.retry_long = old_retry_long;
2172 rdev->wiphy.frag_threshold = old_frag_threshold;
2173 rdev->wiphy.rts_threshold = old_rts_threshold;
2174 rdev->wiphy.coverage_class = old_coverage_class;
2175 }
2176 }
2177
2178 bad_res:
2179 if (netdev)
2180 dev_put(netdev);
2181 return result;
2182 }
2183
2184 static inline u64 wdev_id(struct wireless_dev *wdev)
2185 {
2186 return (u64)wdev->identifier |
2187 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2188 }
2189
2190 static int nl80211_send_chandef(struct sk_buff *msg,
2191 const struct cfg80211_chan_def *chandef)
2192 {
2193 WARN_ON(!cfg80211_chandef_valid(chandef));
2194
2195 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2196 chandef->chan->center_freq))
2197 return -ENOBUFS;
2198 switch (chandef->width) {
2199 case NL80211_CHAN_WIDTH_20_NOHT:
2200 case NL80211_CHAN_WIDTH_20:
2201 case NL80211_CHAN_WIDTH_40:
2202 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2203 cfg80211_get_chandef_type(chandef)))
2204 return -ENOBUFS;
2205 break;
2206 default:
2207 break;
2208 }
2209 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2210 return -ENOBUFS;
2211 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2212 return -ENOBUFS;
2213 if (chandef->center_freq2 &&
2214 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2215 return -ENOBUFS;
2216 return 0;
2217 }
2218
2219 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2220 struct cfg80211_registered_device *rdev,
2221 struct wireless_dev *wdev)
2222 {
2223 struct net_device *dev = wdev->netdev;
2224 void *hdr;
2225
2226 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2227 if (!hdr)
2228 return -1;
2229
2230 if (dev &&
2231 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2232 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2233 goto nla_put_failure;
2234
2235 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2236 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2237 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2238 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2239 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2240 rdev->devlist_generation ^
2241 (cfg80211_rdev_list_generation << 2)))
2242 goto nla_put_failure;
2243
2244 if (rdev->ops->get_channel) {
2245 int ret;
2246 struct cfg80211_chan_def chandef;
2247
2248 ret = rdev_get_channel(rdev, wdev, &chandef);
2249 if (ret == 0) {
2250 if (nl80211_send_chandef(msg, &chandef))
2251 goto nla_put_failure;
2252 }
2253 }
2254
2255 if (wdev->ssid_len) {
2256 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2257 goto nla_put_failure;
2258 }
2259
2260 return genlmsg_end(msg, hdr);
2261
2262 nla_put_failure:
2263 genlmsg_cancel(msg, hdr);
2264 return -EMSGSIZE;
2265 }
2266
2267 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2268 {
2269 int wp_idx = 0;
2270 int if_idx = 0;
2271 int wp_start = cb->args[0];
2272 int if_start = cb->args[1];
2273 struct cfg80211_registered_device *rdev;
2274 struct wireless_dev *wdev;
2275
2276 rtnl_lock();
2277 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2278 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2279 continue;
2280 if (wp_idx < wp_start) {
2281 wp_idx++;
2282 continue;
2283 }
2284 if_idx = 0;
2285
2286 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2287 if (if_idx < if_start) {
2288 if_idx++;
2289 continue;
2290 }
2291 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2292 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2293 rdev, wdev) < 0) {
2294 goto out;
2295 }
2296 if_idx++;
2297 }
2298
2299 wp_idx++;
2300 }
2301 out:
2302 rtnl_unlock();
2303
2304 cb->args[0] = wp_idx;
2305 cb->args[1] = if_idx;
2306
2307 return skb->len;
2308 }
2309
2310 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2311 {
2312 struct sk_buff *msg;
2313 struct cfg80211_registered_device *dev = info->user_ptr[0];
2314 struct wireless_dev *wdev = info->user_ptr[1];
2315
2316 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2317 if (!msg)
2318 return -ENOMEM;
2319
2320 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2321 dev, wdev) < 0) {
2322 nlmsg_free(msg);
2323 return -ENOBUFS;
2324 }
2325
2326 return genlmsg_reply(msg, info);
2327 }
2328
2329 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2330 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2331 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2332 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2333 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2334 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2335 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2336 };
2337
2338 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2339 {
2340 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2341 int flag;
2342
2343 *mntrflags = 0;
2344
2345 if (!nla)
2346 return -EINVAL;
2347
2348 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2349 nla, mntr_flags_policy))
2350 return -EINVAL;
2351
2352 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2353 if (flags[flag])
2354 *mntrflags |= (1<<flag);
2355
2356 return 0;
2357 }
2358
2359 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2360 struct net_device *netdev, u8 use_4addr,
2361 enum nl80211_iftype iftype)
2362 {
2363 if (!use_4addr) {
2364 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2365 return -EBUSY;
2366 return 0;
2367 }
2368
2369 switch (iftype) {
2370 case NL80211_IFTYPE_AP_VLAN:
2371 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2372 return 0;
2373 break;
2374 case NL80211_IFTYPE_STATION:
2375 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2376 return 0;
2377 break;
2378 default:
2379 break;
2380 }
2381
2382 return -EOPNOTSUPP;
2383 }
2384
2385 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2386 {
2387 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2388 struct vif_params params;
2389 int err;
2390 enum nl80211_iftype otype, ntype;
2391 struct net_device *dev = info->user_ptr[1];
2392 u32 _flags, *flags = NULL;
2393 bool change = false;
2394
2395 memset(&params, 0, sizeof(params));
2396
2397 otype = ntype = dev->ieee80211_ptr->iftype;
2398
2399 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2400 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2401 if (otype != ntype)
2402 change = true;
2403 if (ntype > NL80211_IFTYPE_MAX)
2404 return -EINVAL;
2405 }
2406
2407 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2408 struct wireless_dev *wdev = dev->ieee80211_ptr;
2409
2410 if (ntype != NL80211_IFTYPE_MESH_POINT)
2411 return -EINVAL;
2412 if (netif_running(dev))
2413 return -EBUSY;
2414
2415 wdev_lock(wdev);
2416 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2417 IEEE80211_MAX_MESH_ID_LEN);
2418 wdev->mesh_id_up_len =
2419 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2420 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2421 wdev->mesh_id_up_len);
2422 wdev_unlock(wdev);
2423 }
2424
2425 if (info->attrs[NL80211_ATTR_4ADDR]) {
2426 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2427 change = true;
2428 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2429 if (err)
2430 return err;
2431 } else {
2432 params.use_4addr = -1;
2433 }
2434
2435 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2436 if (ntype != NL80211_IFTYPE_MONITOR)
2437 return -EINVAL;
2438 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2439 &_flags);
2440 if (err)
2441 return err;
2442
2443 flags = &_flags;
2444 change = true;
2445 }
2446
2447 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2448 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2449 return -EOPNOTSUPP;
2450
2451 if (change)
2452 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2453 else
2454 err = 0;
2455
2456 if (!err && params.use_4addr != -1)
2457 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2458
2459 return err;
2460 }
2461
2462 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2463 {
2464 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2465 struct vif_params params;
2466 struct wireless_dev *wdev;
2467 struct sk_buff *msg;
2468 int err;
2469 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2470 u32 flags;
2471
2472 memset(&params, 0, sizeof(params));
2473
2474 if (!info->attrs[NL80211_ATTR_IFNAME])
2475 return -EINVAL;
2476
2477 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2478 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2479 if (type > NL80211_IFTYPE_MAX)
2480 return -EINVAL;
2481 }
2482
2483 if (!rdev->ops->add_virtual_intf ||
2484 !(rdev->wiphy.interface_modes & (1 << type)))
2485 return -EOPNOTSUPP;
2486
2487 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2488 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2489 ETH_ALEN);
2490 if (!is_valid_ether_addr(params.macaddr))
2491 return -EADDRNOTAVAIL;
2492 }
2493
2494 if (info->attrs[NL80211_ATTR_4ADDR]) {
2495 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2496 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2497 if (err)
2498 return err;
2499 }
2500
2501 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2502 if (!msg)
2503 return -ENOMEM;
2504
2505 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2506 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2507 &flags);
2508
2509 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2510 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2511 return -EOPNOTSUPP;
2512
2513 wdev = rdev_add_virtual_intf(rdev,
2514 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2515 type, err ? NULL : &flags, &params);
2516 if (IS_ERR(wdev)) {
2517 nlmsg_free(msg);
2518 return PTR_ERR(wdev);
2519 }
2520
2521 switch (type) {
2522 case NL80211_IFTYPE_MESH_POINT:
2523 if (!info->attrs[NL80211_ATTR_MESH_ID])
2524 break;
2525 wdev_lock(wdev);
2526 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2527 IEEE80211_MAX_MESH_ID_LEN);
2528 wdev->mesh_id_up_len =
2529 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2530 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2531 wdev->mesh_id_up_len);
2532 wdev_unlock(wdev);
2533 break;
2534 case NL80211_IFTYPE_P2P_DEVICE:
2535 /*
2536 * P2P Device doesn't have a netdev, so doesn't go
2537 * through the netdev notifier and must be added here
2538 */
2539 mutex_init(&wdev->mtx);
2540 INIT_LIST_HEAD(&wdev->event_list);
2541 spin_lock_init(&wdev->event_lock);
2542 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2543 spin_lock_init(&wdev->mgmt_registrations_lock);
2544
2545 wdev->identifier = ++rdev->wdev_id;
2546 list_add_rcu(&wdev->list, &rdev->wdev_list);
2547 rdev->devlist_generation++;
2548 break;
2549 default:
2550 break;
2551 }
2552
2553 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2554 rdev, wdev) < 0) {
2555 nlmsg_free(msg);
2556 return -ENOBUFS;
2557 }
2558
2559 return genlmsg_reply(msg, info);
2560 }
2561
2562 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2563 {
2564 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2565 struct wireless_dev *wdev = info->user_ptr[1];
2566
2567 if (!rdev->ops->del_virtual_intf)
2568 return -EOPNOTSUPP;
2569
2570 /*
2571 * If we remove a wireless device without a netdev then clear
2572 * user_ptr[1] so that nl80211_post_doit won't dereference it
2573 * to check if it needs to do dev_put(). Otherwise it crashes
2574 * since the wdev has been freed, unlike with a netdev where
2575 * we need the dev_put() for the netdev to really be freed.
2576 */
2577 if (!wdev->netdev)
2578 info->user_ptr[1] = NULL;
2579
2580 return rdev_del_virtual_intf(rdev, wdev);
2581 }
2582
2583 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2584 {
2585 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2586 struct net_device *dev = info->user_ptr[1];
2587 u16 noack_map;
2588
2589 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2590 return -EINVAL;
2591
2592 if (!rdev->ops->set_noack_map)
2593 return -EOPNOTSUPP;
2594
2595 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2596
2597 return rdev_set_noack_map(rdev, dev, noack_map);
2598 }
2599
2600 struct get_key_cookie {
2601 struct sk_buff *msg;
2602 int error;
2603 int idx;
2604 };
2605
2606 static void get_key_callback(void *c, struct key_params *params)
2607 {
2608 struct nlattr *key;
2609 struct get_key_cookie *cookie = c;
2610
2611 if ((params->key &&
2612 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2613 params->key_len, params->key)) ||
2614 (params->seq &&
2615 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2616 params->seq_len, params->seq)) ||
2617 (params->cipher &&
2618 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2619 params->cipher)))
2620 goto nla_put_failure;
2621
2622 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2623 if (!key)
2624 goto nla_put_failure;
2625
2626 if ((params->key &&
2627 nla_put(cookie->msg, NL80211_KEY_DATA,
2628 params->key_len, params->key)) ||
2629 (params->seq &&
2630 nla_put(cookie->msg, NL80211_KEY_SEQ,
2631 params->seq_len, params->seq)) ||
2632 (params->cipher &&
2633 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2634 params->cipher)))
2635 goto nla_put_failure;
2636
2637 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2638 goto nla_put_failure;
2639
2640 nla_nest_end(cookie->msg, key);
2641
2642 return;
2643 nla_put_failure:
2644 cookie->error = 1;
2645 }
2646
2647 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2648 {
2649 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2650 int err;
2651 struct net_device *dev = info->user_ptr[1];
2652 u8 key_idx = 0;
2653 const u8 *mac_addr = NULL;
2654 bool pairwise;
2655 struct get_key_cookie cookie = {
2656 .error = 0,
2657 };
2658 void *hdr;
2659 struct sk_buff *msg;
2660
2661 if (info->attrs[NL80211_ATTR_KEY_IDX])
2662 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2663
2664 if (key_idx > 5)
2665 return -EINVAL;
2666
2667 if (info->attrs[NL80211_ATTR_MAC])
2668 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2669
2670 pairwise = !!mac_addr;
2671 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2672 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2673 if (kt >= NUM_NL80211_KEYTYPES)
2674 return -EINVAL;
2675 if (kt != NL80211_KEYTYPE_GROUP &&
2676 kt != NL80211_KEYTYPE_PAIRWISE)
2677 return -EINVAL;
2678 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2679 }
2680
2681 if (!rdev->ops->get_key)
2682 return -EOPNOTSUPP;
2683
2684 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2685 if (!msg)
2686 return -ENOMEM;
2687
2688 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2689 NL80211_CMD_NEW_KEY);
2690 if (!hdr)
2691 return -ENOBUFS;
2692
2693 cookie.msg = msg;
2694 cookie.idx = key_idx;
2695
2696 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2697 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2698 goto nla_put_failure;
2699 if (mac_addr &&
2700 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2701 goto nla_put_failure;
2702
2703 if (pairwise && mac_addr &&
2704 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2705 return -ENOENT;
2706
2707 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2708 get_key_callback);
2709
2710 if (err)
2711 goto free_msg;
2712
2713 if (cookie.error)
2714 goto nla_put_failure;
2715
2716 genlmsg_end(msg, hdr);
2717 return genlmsg_reply(msg, info);
2718
2719 nla_put_failure:
2720 err = -ENOBUFS;
2721 free_msg:
2722 nlmsg_free(msg);
2723 return err;
2724 }
2725
2726 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2727 {
2728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2729 struct key_parse key;
2730 int err;
2731 struct net_device *dev = info->user_ptr[1];
2732
2733 err = nl80211_parse_key(info, &key);
2734 if (err)
2735 return err;
2736
2737 if (key.idx < 0)
2738 return -EINVAL;
2739
2740 /* only support setting default key */
2741 if (!key.def && !key.defmgmt)
2742 return -EINVAL;
2743
2744 wdev_lock(dev->ieee80211_ptr);
2745
2746 if (key.def) {
2747 if (!rdev->ops->set_default_key) {
2748 err = -EOPNOTSUPP;
2749 goto out;
2750 }
2751
2752 err = nl80211_key_allowed(dev->ieee80211_ptr);
2753 if (err)
2754 goto out;
2755
2756 err = rdev_set_default_key(rdev, dev, key.idx,
2757 key.def_uni, key.def_multi);
2758
2759 if (err)
2760 goto out;
2761
2762 #ifdef CONFIG_CFG80211_WEXT
2763 dev->ieee80211_ptr->wext.default_key = key.idx;
2764 #endif
2765 } else {
2766 if (key.def_uni || !key.def_multi) {
2767 err = -EINVAL;
2768 goto out;
2769 }
2770
2771 if (!rdev->ops->set_default_mgmt_key) {
2772 err = -EOPNOTSUPP;
2773 goto out;
2774 }
2775
2776 err = nl80211_key_allowed(dev->ieee80211_ptr);
2777 if (err)
2778 goto out;
2779
2780 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2781 if (err)
2782 goto out;
2783
2784 #ifdef CONFIG_CFG80211_WEXT
2785 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2786 #endif
2787 }
2788
2789 out:
2790 wdev_unlock(dev->ieee80211_ptr);
2791
2792 return err;
2793 }
2794
2795 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2796 {
2797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2798 int err;
2799 struct net_device *dev = info->user_ptr[1];
2800 struct key_parse key;
2801 const u8 *mac_addr = NULL;
2802
2803 err = nl80211_parse_key(info, &key);
2804 if (err)
2805 return err;
2806
2807 if (!key.p.key)
2808 return -EINVAL;
2809
2810 if (info->attrs[NL80211_ATTR_MAC])
2811 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2812
2813 if (key.type == -1) {
2814 if (mac_addr)
2815 key.type = NL80211_KEYTYPE_PAIRWISE;
2816 else
2817 key.type = NL80211_KEYTYPE_GROUP;
2818 }
2819
2820 /* for now */
2821 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2822 key.type != NL80211_KEYTYPE_GROUP)
2823 return -EINVAL;
2824
2825 if (!rdev->ops->add_key)
2826 return -EOPNOTSUPP;
2827
2828 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2829 key.type == NL80211_KEYTYPE_PAIRWISE,
2830 mac_addr))
2831 return -EINVAL;
2832
2833 wdev_lock(dev->ieee80211_ptr);
2834 err = nl80211_key_allowed(dev->ieee80211_ptr);
2835 if (!err)
2836 err = rdev_add_key(rdev, dev, key.idx,
2837 key.type == NL80211_KEYTYPE_PAIRWISE,
2838 mac_addr, &key.p);
2839 wdev_unlock(dev->ieee80211_ptr);
2840
2841 return err;
2842 }
2843
2844 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2845 {
2846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2847 int err;
2848 struct net_device *dev = info->user_ptr[1];
2849 u8 *mac_addr = NULL;
2850 struct key_parse key;
2851
2852 err = nl80211_parse_key(info, &key);
2853 if (err)
2854 return err;
2855
2856 if (info->attrs[NL80211_ATTR_MAC])
2857 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2858
2859 if (key.type == -1) {
2860 if (mac_addr)
2861 key.type = NL80211_KEYTYPE_PAIRWISE;
2862 else
2863 key.type = NL80211_KEYTYPE_GROUP;
2864 }
2865
2866 /* for now */
2867 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2868 key.type != NL80211_KEYTYPE_GROUP)
2869 return -EINVAL;
2870
2871 if (!rdev->ops->del_key)
2872 return -EOPNOTSUPP;
2873
2874 wdev_lock(dev->ieee80211_ptr);
2875 err = nl80211_key_allowed(dev->ieee80211_ptr);
2876
2877 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2878 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2879 err = -ENOENT;
2880
2881 if (!err)
2882 err = rdev_del_key(rdev, dev, key.idx,
2883 key.type == NL80211_KEYTYPE_PAIRWISE,
2884 mac_addr);
2885
2886 #ifdef CONFIG_CFG80211_WEXT
2887 if (!err) {
2888 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2889 dev->ieee80211_ptr->wext.default_key = -1;
2890 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2891 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2892 }
2893 #endif
2894 wdev_unlock(dev->ieee80211_ptr);
2895
2896 return err;
2897 }
2898
2899 /* This function returns an error or the number of nested attributes */
2900 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2901 {
2902 struct nlattr *attr;
2903 int n_entries = 0, tmp;
2904
2905 nla_for_each_nested(attr, nl_attr, tmp) {
2906 if (nla_len(attr) != ETH_ALEN)
2907 return -EINVAL;
2908
2909 n_entries++;
2910 }
2911
2912 return n_entries;
2913 }
2914
2915 /*
2916 * This function parses ACL information and allocates memory for ACL data.
2917 * On successful return, the calling function is responsible to free the
2918 * ACL buffer returned by this function.
2919 */
2920 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2921 struct genl_info *info)
2922 {
2923 enum nl80211_acl_policy acl_policy;
2924 struct nlattr *attr;
2925 struct cfg80211_acl_data *acl;
2926 int i = 0, n_entries, tmp;
2927
2928 if (!wiphy->max_acl_mac_addrs)
2929 return ERR_PTR(-EOPNOTSUPP);
2930
2931 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2932 return ERR_PTR(-EINVAL);
2933
2934 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2935 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2936 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2937 return ERR_PTR(-EINVAL);
2938
2939 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2940 return ERR_PTR(-EINVAL);
2941
2942 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2943 if (n_entries < 0)
2944 return ERR_PTR(n_entries);
2945
2946 if (n_entries > wiphy->max_acl_mac_addrs)
2947 return ERR_PTR(-ENOTSUPP);
2948
2949 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2950 GFP_KERNEL);
2951 if (!acl)
2952 return ERR_PTR(-ENOMEM);
2953
2954 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2955 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2956 i++;
2957 }
2958
2959 acl->n_acl_entries = n_entries;
2960 acl->acl_policy = acl_policy;
2961
2962 return acl;
2963 }
2964
2965 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2966 {
2967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2968 struct net_device *dev = info->user_ptr[1];
2969 struct cfg80211_acl_data *acl;
2970 int err;
2971
2972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2973 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2974 return -EOPNOTSUPP;
2975
2976 if (!dev->ieee80211_ptr->beacon_interval)
2977 return -EINVAL;
2978
2979 acl = parse_acl_data(&rdev->wiphy, info);
2980 if (IS_ERR(acl))
2981 return PTR_ERR(acl);
2982
2983 err = rdev_set_mac_acl(rdev, dev, acl);
2984
2985 kfree(acl);
2986
2987 return err;
2988 }
2989
2990 static int nl80211_parse_beacon(struct nlattr *attrs[],
2991 struct cfg80211_beacon_data *bcn)
2992 {
2993 bool haveinfo = false;
2994
2995 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2996 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2997 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2998 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2999 return -EINVAL;
3000
3001 memset(bcn, 0, sizeof(*bcn));
3002
3003 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3004 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3005 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3006 if (!bcn->head_len)
3007 return -EINVAL;
3008 haveinfo = true;
3009 }
3010
3011 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3012 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3013 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3014 haveinfo = true;
3015 }
3016
3017 if (!haveinfo)
3018 return -EINVAL;
3019
3020 if (attrs[NL80211_ATTR_IE]) {
3021 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3022 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3023 }
3024
3025 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3026 bcn->proberesp_ies =
3027 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3028 bcn->proberesp_ies_len =
3029 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3030 }
3031
3032 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3033 bcn->assocresp_ies =
3034 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3035 bcn->assocresp_ies_len =
3036 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3037 }
3038
3039 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3040 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3041 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3042 }
3043
3044 return 0;
3045 }
3046
3047 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3048 struct cfg80211_ap_settings *params)
3049 {
3050 struct wireless_dev *wdev;
3051 bool ret = false;
3052
3053 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3054 if (wdev->iftype != NL80211_IFTYPE_AP &&
3055 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3056 continue;
3057
3058 if (!wdev->preset_chandef.chan)
3059 continue;
3060
3061 params->chandef = wdev->preset_chandef;
3062 ret = true;
3063 break;
3064 }
3065
3066 return ret;
3067 }
3068
3069 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3070 enum nl80211_auth_type auth_type,
3071 enum nl80211_commands cmd)
3072 {
3073 if (auth_type > NL80211_AUTHTYPE_MAX)
3074 return false;
3075
3076 switch (cmd) {
3077 case NL80211_CMD_AUTHENTICATE:
3078 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3079 auth_type == NL80211_AUTHTYPE_SAE)
3080 return false;
3081 return true;
3082 case NL80211_CMD_CONNECT:
3083 case NL80211_CMD_START_AP:
3084 /* SAE not supported yet */
3085 if (auth_type == NL80211_AUTHTYPE_SAE)
3086 return false;
3087 return true;
3088 default:
3089 return false;
3090 }
3091 }
3092
3093 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3094 {
3095 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3096 struct net_device *dev = info->user_ptr[1];
3097 struct wireless_dev *wdev = dev->ieee80211_ptr;
3098 struct cfg80211_ap_settings params;
3099 int err;
3100 u8 radar_detect_width = 0;
3101
3102 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3103 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3104 return -EOPNOTSUPP;
3105
3106 if (!rdev->ops->start_ap)
3107 return -EOPNOTSUPP;
3108
3109 if (wdev->beacon_interval)
3110 return -EALREADY;
3111
3112 memset(&params, 0, sizeof(params));
3113
3114 /* these are required for START_AP */
3115 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3116 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3117 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3118 return -EINVAL;
3119
3120 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3121 if (err)
3122 return err;
3123
3124 params.beacon_interval =
3125 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3126 params.dtim_period =
3127 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3128
3129 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3130 if (err)
3131 return err;
3132
3133 /*
3134 * In theory, some of these attributes should be required here
3135 * but since they were not used when the command was originally
3136 * added, keep them optional for old user space programs to let
3137 * them continue to work with drivers that do not need the
3138 * additional information -- drivers must check!
3139 */
3140 if (info->attrs[NL80211_ATTR_SSID]) {
3141 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3142 params.ssid_len =
3143 nla_len(info->attrs[NL80211_ATTR_SSID]);
3144 if (params.ssid_len == 0 ||
3145 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3146 return -EINVAL;
3147 }
3148
3149 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3150 params.hidden_ssid = nla_get_u32(
3151 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3152 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3153 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3154 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3155 return -EINVAL;
3156 }
3157
3158 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3159
3160 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3161 params.auth_type = nla_get_u32(
3162 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3163 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3164 NL80211_CMD_START_AP))
3165 return -EINVAL;
3166 } else
3167 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3168
3169 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3170 NL80211_MAX_NR_CIPHER_SUITES);
3171 if (err)
3172 return err;
3173
3174 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3175 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3176 return -EOPNOTSUPP;
3177 params.inactivity_timeout = nla_get_u16(
3178 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3179 }
3180
3181 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3182 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3183 return -EINVAL;
3184 params.p2p_ctwindow =
3185 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3186 if (params.p2p_ctwindow > 127)
3187 return -EINVAL;
3188 if (params.p2p_ctwindow != 0 &&
3189 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3190 return -EINVAL;
3191 }
3192
3193 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3194 u8 tmp;
3195
3196 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3197 return -EINVAL;
3198 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3199 if (tmp > 1)
3200 return -EINVAL;
3201 params.p2p_opp_ps = tmp;
3202 if (params.p2p_opp_ps != 0 &&
3203 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3204 return -EINVAL;
3205 }
3206
3207 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3208 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3209 if (err)
3210 return err;
3211 } else if (wdev->preset_chandef.chan) {
3212 params.chandef = wdev->preset_chandef;
3213 } else if (!nl80211_get_ap_channel(rdev, &params))
3214 return -EINVAL;
3215
3216 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3217 return -EINVAL;
3218
3219 err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3220 if (err < 0)
3221 return err;
3222 if (err) {
3223 radar_detect_width = BIT(params.chandef.width);
3224 params.radar_required = true;
3225 }
3226
3227 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3228 params.chandef.chan,
3229 CHAN_MODE_SHARED,
3230 radar_detect_width);
3231 if (err)
3232 return err;
3233
3234 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3235 params.acl = parse_acl_data(&rdev->wiphy, info);
3236 if (IS_ERR(params.acl))
3237 return PTR_ERR(params.acl);
3238 }
3239
3240 wdev_lock(wdev);
3241 err = rdev_start_ap(rdev, dev, &params);
3242 if (!err) {
3243 wdev->preset_chandef = params.chandef;
3244 wdev->beacon_interval = params.beacon_interval;
3245 wdev->channel = params.chandef.chan;
3246 wdev->ssid_len = params.ssid_len;
3247 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3248 }
3249 wdev_unlock(wdev);
3250
3251 kfree(params.acl);
3252
3253 return err;
3254 }
3255
3256 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3257 {
3258 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3259 struct net_device *dev = info->user_ptr[1];
3260 struct wireless_dev *wdev = dev->ieee80211_ptr;
3261 struct cfg80211_beacon_data params;
3262 int err;
3263
3264 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3265 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3266 return -EOPNOTSUPP;
3267
3268 if (!rdev->ops->change_beacon)
3269 return -EOPNOTSUPP;
3270
3271 if (!wdev->beacon_interval)
3272 return -EINVAL;
3273
3274 err = nl80211_parse_beacon(info->attrs, &params);
3275 if (err)
3276 return err;
3277
3278 wdev_lock(wdev);
3279 err = rdev_change_beacon(rdev, dev, &params);
3280 wdev_unlock(wdev);
3281
3282 return err;
3283 }
3284
3285 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3286 {
3287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3288 struct net_device *dev = info->user_ptr[1];
3289
3290 return cfg80211_stop_ap(rdev, dev);
3291 }
3292
3293 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3294 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3295 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3296 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3297 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3298 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3299 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3300 };
3301
3302 static int parse_station_flags(struct genl_info *info,
3303 enum nl80211_iftype iftype,
3304 struct station_parameters *params)
3305 {
3306 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3307 struct nlattr *nla;
3308 int flag;
3309
3310 /*
3311 * Try parsing the new attribute first so userspace
3312 * can specify both for older kernels.
3313 */
3314 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3315 if (nla) {
3316 struct nl80211_sta_flag_update *sta_flags;
3317
3318 sta_flags = nla_data(nla);
3319 params->sta_flags_mask = sta_flags->mask;
3320 params->sta_flags_set = sta_flags->set;
3321 params->sta_flags_set &= params->sta_flags_mask;
3322 if ((params->sta_flags_mask |
3323 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3324 return -EINVAL;
3325 return 0;
3326 }
3327
3328 /* if present, parse the old attribute */
3329
3330 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3331 if (!nla)
3332 return 0;
3333
3334 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3335 nla, sta_flags_policy))
3336 return -EINVAL;
3337
3338 /*
3339 * Only allow certain flags for interface types so that
3340 * other attributes are silently ignored. Remember that
3341 * this is backward compatibility code with old userspace
3342 * and shouldn't be hit in other cases anyway.
3343 */
3344 switch (iftype) {
3345 case NL80211_IFTYPE_AP:
3346 case NL80211_IFTYPE_AP_VLAN:
3347 case NL80211_IFTYPE_P2P_GO:
3348 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3349 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3350 BIT(NL80211_STA_FLAG_WME) |
3351 BIT(NL80211_STA_FLAG_MFP);
3352 break;
3353 case NL80211_IFTYPE_P2P_CLIENT:
3354 case NL80211_IFTYPE_STATION:
3355 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3356 BIT(NL80211_STA_FLAG_TDLS_PEER);
3357 break;
3358 case NL80211_IFTYPE_MESH_POINT:
3359 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3360 BIT(NL80211_STA_FLAG_MFP) |
3361 BIT(NL80211_STA_FLAG_AUTHORIZED);
3362 default:
3363 return -EINVAL;
3364 }
3365
3366 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3367 if (flags[flag]) {
3368 params->sta_flags_set |= (1<<flag);
3369
3370 /* no longer support new API additions in old API */
3371 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3372 return -EINVAL;
3373 }
3374 }
3375
3376 return 0;
3377 }
3378
3379 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3380 int attr)
3381 {
3382 struct nlattr *rate;
3383 u32 bitrate;
3384 u16 bitrate_compat;
3385
3386 rate = nla_nest_start(msg, attr);
3387 if (!rate)
3388 return false;
3389
3390 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3391 bitrate = cfg80211_calculate_bitrate(info);
3392 /* report 16-bit bitrate only if we can */
3393 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3394 if (bitrate > 0 &&
3395 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3396 return false;
3397 if (bitrate_compat > 0 &&
3398 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3399 return false;
3400
3401 if (info->flags & RATE_INFO_FLAGS_MCS) {
3402 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3403 return false;
3404 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3405 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3406 return false;
3407 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3408 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3409 return false;
3410 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3411 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3412 return false;
3413 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3414 return false;
3415 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3416 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3417 return false;
3418 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3419 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3420 return false;
3421 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3422 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3423 return false;
3424 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3425 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3426 return false;
3427 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3428 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3429 return false;
3430 }
3431
3432 nla_nest_end(msg, rate);
3433 return true;
3434 }
3435
3436 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3437 int id)
3438 {
3439 void *attr;
3440 int i = 0;
3441
3442 if (!mask)
3443 return true;
3444
3445 attr = nla_nest_start(msg, id);
3446 if (!attr)
3447 return false;
3448
3449 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3450 if (!(mask & BIT(i)))
3451 continue;
3452
3453 if (nla_put_u8(msg, i, signal[i]))
3454 return false;
3455 }
3456
3457 nla_nest_end(msg, attr);
3458
3459 return true;
3460 }
3461
3462 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3463 int flags,
3464 struct cfg80211_registered_device *rdev,
3465 struct net_device *dev,
3466 const u8 *mac_addr, struct station_info *sinfo)
3467 {
3468 void *hdr;
3469 struct nlattr *sinfoattr, *bss_param;
3470
3471 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3472 if (!hdr)
3473 return -1;
3474
3475 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3476 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3477 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3478 goto nla_put_failure;
3479
3480 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3481 if (!sinfoattr)
3482 goto nla_put_failure;
3483 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3484 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3485 sinfo->connected_time))
3486 goto nla_put_failure;
3487 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3488 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3489 sinfo->inactive_time))
3490 goto nla_put_failure;
3491 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3492 STATION_INFO_RX_BYTES64)) &&
3493 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3494 (u32)sinfo->rx_bytes))
3495 goto nla_put_failure;
3496 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3497 STATION_INFO_TX_BYTES64)) &&
3498 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3499 (u32)sinfo->tx_bytes))
3500 goto nla_put_failure;
3501 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3502 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3503 sinfo->rx_bytes))
3504 goto nla_put_failure;
3505 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3506 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3507 sinfo->tx_bytes))
3508 goto nla_put_failure;
3509 if ((sinfo->filled & STATION_INFO_LLID) &&
3510 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3511 goto nla_put_failure;
3512 if ((sinfo->filled & STATION_INFO_PLID) &&
3513 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3514 goto nla_put_failure;
3515 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3516 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3517 sinfo->plink_state))
3518 goto nla_put_failure;
3519 switch (rdev->wiphy.signal_type) {
3520 case CFG80211_SIGNAL_TYPE_MBM:
3521 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3522 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3523 sinfo->signal))
3524 goto nla_put_failure;
3525 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3526 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3527 sinfo->signal_avg))
3528 goto nla_put_failure;
3529 break;
3530 default:
3531 break;
3532 }
3533 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3534 if (!nl80211_put_signal(msg, sinfo->chains,
3535 sinfo->chain_signal,
3536 NL80211_STA_INFO_CHAIN_SIGNAL))
3537 goto nla_put_failure;
3538 }
3539 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3540 if (!nl80211_put_signal(msg, sinfo->chains,
3541 sinfo->chain_signal_avg,
3542 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3543 goto nla_put_failure;
3544 }
3545 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3546 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3547 NL80211_STA_INFO_TX_BITRATE))
3548 goto nla_put_failure;
3549 }
3550 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3551 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3552 NL80211_STA_INFO_RX_BITRATE))
3553 goto nla_put_failure;
3554 }
3555 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3556 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3557 sinfo->rx_packets))
3558 goto nla_put_failure;
3559 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3560 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3561 sinfo->tx_packets))
3562 goto nla_put_failure;
3563 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3564 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3565 sinfo->tx_retries))
3566 goto nla_put_failure;
3567 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3568 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3569 sinfo->tx_failed))
3570 goto nla_put_failure;
3571 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3572 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3573 sinfo->beacon_loss_count))
3574 goto nla_put_failure;
3575 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3576 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3577 sinfo->local_pm))
3578 goto nla_put_failure;
3579 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3580 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3581 sinfo->peer_pm))
3582 goto nla_put_failure;
3583 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3584 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3585 sinfo->nonpeer_pm))
3586 goto nla_put_failure;
3587 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3588 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3589 if (!bss_param)
3590 goto nla_put_failure;
3591
3592 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3593 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3594 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3595 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3596 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3597 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3598 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3599 sinfo->bss_param.dtim_period) ||
3600 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3601 sinfo->bss_param.beacon_interval))
3602 goto nla_put_failure;
3603
3604 nla_nest_end(msg, bss_param);
3605 }
3606 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3607 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3608 sizeof(struct nl80211_sta_flag_update),
3609 &sinfo->sta_flags))
3610 goto nla_put_failure;
3611 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3612 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3613 sinfo->t_offset))
3614 goto nla_put_failure;
3615 nla_nest_end(msg, sinfoattr);
3616
3617 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3618 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3619 sinfo->assoc_req_ies))
3620 goto nla_put_failure;
3621
3622 return genlmsg_end(msg, hdr);
3623
3624 nla_put_failure:
3625 genlmsg_cancel(msg, hdr);
3626 return -EMSGSIZE;
3627 }
3628
3629 static int nl80211_dump_station(struct sk_buff *skb,
3630 struct netlink_callback *cb)
3631 {
3632 struct station_info sinfo;
3633 struct cfg80211_registered_device *dev;
3634 struct wireless_dev *wdev;
3635 u8 mac_addr[ETH_ALEN];
3636 int sta_idx = cb->args[2];
3637 int err;
3638
3639 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3640 if (err)
3641 return err;
3642
3643 if (!wdev->netdev) {
3644 err = -EINVAL;
3645 goto out_err;
3646 }
3647
3648 if (!dev->ops->dump_station) {
3649 err = -EOPNOTSUPP;
3650 goto out_err;
3651 }
3652
3653 while (1) {
3654 memset(&sinfo, 0, sizeof(sinfo));
3655 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3656 mac_addr, &sinfo);
3657 if (err == -ENOENT)
3658 break;
3659 if (err)
3660 goto out_err;
3661
3662 if (nl80211_send_station(skb,
3663 NETLINK_CB(cb->skb).portid,
3664 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3665 dev, wdev->netdev, mac_addr,
3666 &sinfo) < 0)
3667 goto out;
3668
3669 sta_idx++;
3670 }
3671
3672
3673 out:
3674 cb->args[2] = sta_idx;
3675 err = skb->len;
3676 out_err:
3677 nl80211_finish_wdev_dump(dev);
3678
3679 return err;
3680 }
3681
3682 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3683 {
3684 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3685 struct net_device *dev = info->user_ptr[1];
3686 struct station_info sinfo;
3687 struct sk_buff *msg;
3688 u8 *mac_addr = NULL;
3689 int err;
3690
3691 memset(&sinfo, 0, sizeof(sinfo));
3692
3693 if (!info->attrs[NL80211_ATTR_MAC])
3694 return -EINVAL;
3695
3696 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3697
3698 if (!rdev->ops->get_station)
3699 return -EOPNOTSUPP;
3700
3701 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3702 if (err)
3703 return err;
3704
3705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3706 if (!msg)
3707 return -ENOMEM;
3708
3709 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3710 rdev, dev, mac_addr, &sinfo) < 0) {
3711 nlmsg_free(msg);
3712 return -ENOBUFS;
3713 }
3714
3715 return genlmsg_reply(msg, info);
3716 }
3717
3718 int cfg80211_check_station_change(struct wiphy *wiphy,
3719 struct station_parameters *params,
3720 enum cfg80211_station_type statype)
3721 {
3722 if (params->listen_interval != -1)
3723 return -EINVAL;
3724 if (params->aid)
3725 return -EINVAL;
3726
3727 /* When you run into this, adjust the code below for the new flag */
3728 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3729
3730 switch (statype) {
3731 case CFG80211_STA_MESH_PEER_KERNEL:
3732 case CFG80211_STA_MESH_PEER_USER:
3733 /*
3734 * No ignoring the TDLS flag here -- the userspace mesh
3735 * code doesn't have the bug of including TDLS in the
3736 * mask everywhere.
3737 */
3738 if (params->sta_flags_mask &
3739 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3740 BIT(NL80211_STA_FLAG_MFP) |
3741 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3742 return -EINVAL;
3743 break;
3744 case CFG80211_STA_TDLS_PEER_SETUP:
3745 case CFG80211_STA_TDLS_PEER_ACTIVE:
3746 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3747 return -EINVAL;
3748 /* ignore since it can't change */
3749 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3750 break;
3751 default:
3752 /* disallow mesh-specific things */
3753 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3754 return -EINVAL;
3755 if (params->local_pm)
3756 return -EINVAL;
3757 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3758 return -EINVAL;
3759 }
3760
3761 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3762 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3763 /* TDLS can't be set, ... */
3764 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3765 return -EINVAL;
3766 /*
3767 * ... but don't bother the driver with it. This works around
3768 * a hostapd/wpa_supplicant issue -- it always includes the
3769 * TLDS_PEER flag in the mask even for AP mode.
3770 */
3771 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3772 }
3773
3774 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3775 /* reject other things that can't change */
3776 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3777 return -EINVAL;
3778 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3779 return -EINVAL;
3780 if (params->supported_rates)
3781 return -EINVAL;
3782 if (params->ext_capab || params->ht_capa || params->vht_capa)
3783 return -EINVAL;
3784 }
3785
3786 if (statype != CFG80211_STA_AP_CLIENT) {
3787 if (params->vlan)
3788 return -EINVAL;
3789 }
3790
3791 switch (statype) {
3792 case CFG80211_STA_AP_MLME_CLIENT:
3793 /* Use this only for authorizing/unauthorizing a station */
3794 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3795 return -EOPNOTSUPP;
3796 break;
3797 case CFG80211_STA_AP_CLIENT:
3798 /* accept only the listed bits */
3799 if (params->sta_flags_mask &
3800 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3801 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3802 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3803 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3804 BIT(NL80211_STA_FLAG_WME) |
3805 BIT(NL80211_STA_FLAG_MFP)))
3806 return -EINVAL;
3807
3808 /* but authenticated/associated only if driver handles it */
3809 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3810 params->sta_flags_mask &
3811 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3812 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3813 return -EINVAL;
3814 break;
3815 case CFG80211_STA_IBSS:
3816 case CFG80211_STA_AP_STA:
3817 /* reject any changes other than AUTHORIZED */
3818 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3819 return -EINVAL;
3820 break;
3821 case CFG80211_STA_TDLS_PEER_SETUP:
3822 /* reject any changes other than AUTHORIZED or WME */
3823 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3824 BIT(NL80211_STA_FLAG_WME)))
3825 return -EINVAL;
3826 /* force (at least) rates when authorizing */
3827 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3828 !params->supported_rates)
3829 return -EINVAL;
3830 break;
3831 case CFG80211_STA_TDLS_PEER_ACTIVE:
3832 /* reject any changes */
3833 return -EINVAL;
3834 case CFG80211_STA_MESH_PEER_KERNEL:
3835 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3836 return -EINVAL;
3837 break;
3838 case CFG80211_STA_MESH_PEER_USER:
3839 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3840 return -EINVAL;
3841 break;
3842 }
3843
3844 return 0;
3845 }
3846 EXPORT_SYMBOL(cfg80211_check_station_change);
3847
3848 /*
3849 * Get vlan interface making sure it is running and on the right wiphy.
3850 */
3851 static struct net_device *get_vlan(struct genl_info *info,
3852 struct cfg80211_registered_device *rdev)
3853 {
3854 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3855 struct net_device *v;
3856 int ret;
3857
3858 if (!vlanattr)
3859 return NULL;
3860
3861 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3862 if (!v)
3863 return ERR_PTR(-ENODEV);
3864
3865 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3866 ret = -EINVAL;
3867 goto error;
3868 }
3869
3870 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3871 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3872 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3873 ret = -EINVAL;
3874 goto error;
3875 }
3876
3877 if (!netif_running(v)) {
3878 ret = -ENETDOWN;
3879 goto error;
3880 }
3881
3882 return v;
3883 error:
3884 dev_put(v);
3885 return ERR_PTR(ret);
3886 }
3887
3888 static struct nla_policy
3889 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3890 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3891 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3892 };
3893
3894 static int nl80211_parse_sta_wme(struct genl_info *info,
3895 struct station_parameters *params)
3896 {
3897 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3898 struct nlattr *nla;
3899 int err;
3900
3901 /* parse WME attributes if present */
3902 if (!info->attrs[NL80211_ATTR_STA_WME])
3903 return 0;
3904
3905 nla = info->attrs[NL80211_ATTR_STA_WME];
3906 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3907 nl80211_sta_wme_policy);
3908 if (err)
3909 return err;
3910
3911 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3912 params->uapsd_queues = nla_get_u8(
3913 tb[NL80211_STA_WME_UAPSD_QUEUES]);
3914 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3915 return -EINVAL;
3916
3917 if (tb[NL80211_STA_WME_MAX_SP])
3918 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3919
3920 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3921 return -EINVAL;
3922
3923 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3924
3925 return 0;
3926 }
3927
3928 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3929 struct station_parameters *params)
3930 {
3931 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3932 params->supported_channels =
3933 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3934 params->supported_channels_len =
3935 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3936 /*
3937 * Need to include at least one (first channel, number of
3938 * channels) tuple for each subband, and must have proper
3939 * tuples for the rest of the data as well.
3940 */
3941 if (params->supported_channels_len < 2)
3942 return -EINVAL;
3943 if (params->supported_channels_len % 2)
3944 return -EINVAL;
3945 }
3946
3947 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3948 params->supported_oper_classes =
3949 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3950 params->supported_oper_classes_len =
3951 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3952 /*
3953 * The value of the Length field of the Supported Operating
3954 * Classes element is between 2 and 253.
3955 */
3956 if (params->supported_oper_classes_len < 2 ||
3957 params->supported_oper_classes_len > 253)
3958 return -EINVAL;
3959 }
3960 return 0;
3961 }
3962
3963 static int nl80211_set_station_tdls(struct genl_info *info,
3964 struct station_parameters *params)
3965 {
3966 int err;
3967 /* Dummy STA entry gets updated once the peer capabilities are known */
3968 if (info->attrs[NL80211_ATTR_PEER_AID])
3969 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3970 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3971 params->ht_capa =
3972 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3973 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3974 params->vht_capa =
3975 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3976
3977 err = nl80211_parse_sta_channel_info(info, params);
3978 if (err)
3979 return err;
3980
3981 return nl80211_parse_sta_wme(info, params);
3982 }
3983
3984 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3985 {
3986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3987 struct net_device *dev = info->user_ptr[1];
3988 struct station_parameters params;
3989 u8 *mac_addr;
3990 int err;
3991
3992 memset(&params, 0, sizeof(params));
3993
3994 params.listen_interval = -1;
3995
3996 if (!rdev->ops->change_station)
3997 return -EOPNOTSUPP;
3998
3999 if (info->attrs[NL80211_ATTR_STA_AID])
4000 return -EINVAL;
4001
4002 if (!info->attrs[NL80211_ATTR_MAC])
4003 return -EINVAL;
4004
4005 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4006
4007 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4008 params.supported_rates =
4009 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4010 params.supported_rates_len =
4011 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4012 }
4013
4014 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4015 params.capability =
4016 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4017 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4018 }
4019
4020 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4021 params.ext_capab =
4022 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4023 params.ext_capab_len =
4024 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4025 }
4026
4027 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4028 return -EINVAL;
4029
4030 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4031 return -EINVAL;
4032
4033 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4034 params.plink_action =
4035 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4036 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4037 return -EINVAL;
4038 }
4039
4040 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4041 params.plink_state =
4042 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4043 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4044 return -EINVAL;
4045 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4046 }
4047
4048 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4049 enum nl80211_mesh_power_mode pm = nla_get_u32(
4050 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4051
4052 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4053 pm > NL80211_MESH_POWER_MAX)
4054 return -EINVAL;
4055
4056 params.local_pm = pm;
4057 }
4058
4059 /* Include parameters for TDLS peer (will check later) */
4060 err = nl80211_set_station_tdls(info, &params);
4061 if (err)
4062 return err;
4063
4064 params.vlan = get_vlan(info, rdev);
4065 if (IS_ERR(params.vlan))
4066 return PTR_ERR(params.vlan);
4067
4068 switch (dev->ieee80211_ptr->iftype) {
4069 case NL80211_IFTYPE_AP:
4070 case NL80211_IFTYPE_AP_VLAN:
4071 case NL80211_IFTYPE_P2P_GO:
4072 case NL80211_IFTYPE_P2P_CLIENT:
4073 case NL80211_IFTYPE_STATION:
4074 case NL80211_IFTYPE_ADHOC:
4075 case NL80211_IFTYPE_MESH_POINT:
4076 break;
4077 default:
4078 err = -EOPNOTSUPP;
4079 goto out_put_vlan;
4080 }
4081
4082 /* driver will call cfg80211_check_station_change() */
4083 err = rdev_change_station(rdev, dev, mac_addr, &params);
4084
4085 out_put_vlan:
4086 if (params.vlan)
4087 dev_put(params.vlan);
4088
4089 return err;
4090 }
4091
4092 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4093 {
4094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4095 int err;
4096 struct net_device *dev = info->user_ptr[1];
4097 struct station_parameters params;
4098 u8 *mac_addr = NULL;
4099
4100 memset(&params, 0, sizeof(params));
4101
4102 if (!rdev->ops->add_station)
4103 return -EOPNOTSUPP;
4104
4105 if (!info->attrs[NL80211_ATTR_MAC])
4106 return -EINVAL;
4107
4108 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4109 return -EINVAL;
4110
4111 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4112 return -EINVAL;
4113
4114 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4115 !info->attrs[NL80211_ATTR_PEER_AID])
4116 return -EINVAL;
4117
4118 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4119 params.supported_rates =
4120 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4121 params.supported_rates_len =
4122 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4123 params.listen_interval =
4124 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4125
4126 if (info->attrs[NL80211_ATTR_PEER_AID])
4127 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4128 else
4129 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4130 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4131 return -EINVAL;
4132
4133 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4134 params.capability =
4135 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4136 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4137 }
4138
4139 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4140 params.ext_capab =
4141 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4142 params.ext_capab_len =
4143 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4144 }
4145
4146 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4147 params.ht_capa =
4148 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4149
4150 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4151 params.vht_capa =
4152 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4153
4154 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4155 params.plink_action =
4156 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4157 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4158 return -EINVAL;
4159 }
4160
4161 err = nl80211_parse_sta_channel_info(info, &params);
4162 if (err)
4163 return err;
4164
4165 err = nl80211_parse_sta_wme(info, &params);
4166 if (err)
4167 return err;
4168
4169 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4170 return -EINVAL;
4171
4172 /* When you run into this, adjust the code below for the new flag */
4173 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4174
4175 switch (dev->ieee80211_ptr->iftype) {
4176 case NL80211_IFTYPE_AP:
4177 case NL80211_IFTYPE_AP_VLAN:
4178 case NL80211_IFTYPE_P2P_GO:
4179 /* ignore WME attributes if iface/sta is not capable */
4180 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4181 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4182 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4183
4184 /* TDLS peers cannot be added */
4185 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4186 info->attrs[NL80211_ATTR_PEER_AID])
4187 return -EINVAL;
4188 /* but don't bother the driver with it */
4189 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4190
4191 /* allow authenticated/associated only if driver handles it */
4192 if (!(rdev->wiphy.features &
4193 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4194 params.sta_flags_mask &
4195 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4196 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4197 return -EINVAL;
4198
4199 /* must be last in here for error handling */
4200 params.vlan = get_vlan(info, rdev);
4201 if (IS_ERR(params.vlan))
4202 return PTR_ERR(params.vlan);
4203 break;
4204 case NL80211_IFTYPE_MESH_POINT:
4205 /* ignore uAPSD data */
4206 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4207
4208 /* associated is disallowed */
4209 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4210 return -EINVAL;
4211 /* TDLS peers cannot be added */
4212 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4213 info->attrs[NL80211_ATTR_PEER_AID])
4214 return -EINVAL;
4215 break;
4216 case NL80211_IFTYPE_STATION:
4217 case NL80211_IFTYPE_P2P_CLIENT:
4218 /* ignore uAPSD data */
4219 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4220
4221 /* these are disallowed */
4222 if (params.sta_flags_mask &
4223 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4224 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4225 return -EINVAL;
4226 /* Only TDLS peers can be added */
4227 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4228 return -EINVAL;
4229 /* Can only add if TDLS ... */
4230 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4231 return -EOPNOTSUPP;
4232 /* ... with external setup is supported */
4233 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4234 return -EOPNOTSUPP;
4235 /*
4236 * Older wpa_supplicant versions always mark the TDLS peer
4237 * as authorized, but it shouldn't yet be.
4238 */
4239 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4240 break;
4241 default:
4242 return -EOPNOTSUPP;
4243 }
4244
4245 /* be aware of params.vlan when changing code here */
4246
4247 err = rdev_add_station(rdev, dev, mac_addr, &params);
4248
4249 if (params.vlan)
4250 dev_put(params.vlan);
4251 return err;
4252 }
4253
4254 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4255 {
4256 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4257 struct net_device *dev = info->user_ptr[1];
4258 u8 *mac_addr = NULL;
4259
4260 if (info->attrs[NL80211_ATTR_MAC])
4261 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4262
4263 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4265 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4266 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4267 return -EINVAL;
4268
4269 if (!rdev->ops->del_station)
4270 return -EOPNOTSUPP;
4271
4272 return rdev_del_station(rdev, dev, mac_addr);
4273 }
4274
4275 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4276 int flags, struct net_device *dev,
4277 u8 *dst, u8 *next_hop,
4278 struct mpath_info *pinfo)
4279 {
4280 void *hdr;
4281 struct nlattr *pinfoattr;
4282
4283 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4284 if (!hdr)
4285 return -1;
4286
4287 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4288 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4289 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4290 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4291 goto nla_put_failure;
4292
4293 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4294 if (!pinfoattr)
4295 goto nla_put_failure;
4296 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4297 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4298 pinfo->frame_qlen))
4299 goto nla_put_failure;
4300 if (((pinfo->filled & MPATH_INFO_SN) &&
4301 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4302 ((pinfo->filled & MPATH_INFO_METRIC) &&
4303 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4304 pinfo->metric)) ||
4305 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4306 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4307 pinfo->exptime)) ||
4308 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4309 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4310 pinfo->flags)) ||
4311 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4312 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4313 pinfo->discovery_timeout)) ||
4314 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4315 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4316 pinfo->discovery_retries)))
4317 goto nla_put_failure;
4318
4319 nla_nest_end(msg, pinfoattr);
4320
4321 return genlmsg_end(msg, hdr);
4322
4323 nla_put_failure:
4324 genlmsg_cancel(msg, hdr);
4325 return -EMSGSIZE;
4326 }
4327
4328 static int nl80211_dump_mpath(struct sk_buff *skb,
4329 struct netlink_callback *cb)
4330 {
4331 struct mpath_info pinfo;
4332 struct cfg80211_registered_device *dev;
4333 struct wireless_dev *wdev;
4334 u8 dst[ETH_ALEN];
4335 u8 next_hop[ETH_ALEN];
4336 int path_idx = cb->args[2];
4337 int err;
4338
4339 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4340 if (err)
4341 return err;
4342
4343 if (!dev->ops->dump_mpath) {
4344 err = -EOPNOTSUPP;
4345 goto out_err;
4346 }
4347
4348 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4349 err = -EOPNOTSUPP;
4350 goto out_err;
4351 }
4352
4353 while (1) {
4354 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4355 next_hop, &pinfo);
4356 if (err == -ENOENT)
4357 break;
4358 if (err)
4359 goto out_err;
4360
4361 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4362 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4363 wdev->netdev, dst, next_hop,
4364 &pinfo) < 0)
4365 goto out;
4366
4367 path_idx++;
4368 }
4369
4370
4371 out:
4372 cb->args[2] = path_idx;
4373 err = skb->len;
4374 out_err:
4375 nl80211_finish_wdev_dump(dev);
4376 return err;
4377 }
4378
4379 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4380 {
4381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4382 int err;
4383 struct net_device *dev = info->user_ptr[1];
4384 struct mpath_info pinfo;
4385 struct sk_buff *msg;
4386 u8 *dst = NULL;
4387 u8 next_hop[ETH_ALEN];
4388
4389 memset(&pinfo, 0, sizeof(pinfo));
4390
4391 if (!info->attrs[NL80211_ATTR_MAC])
4392 return -EINVAL;
4393
4394 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4395
4396 if (!rdev->ops->get_mpath)
4397 return -EOPNOTSUPP;
4398
4399 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4400 return -EOPNOTSUPP;
4401
4402 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4403 if (err)
4404 return err;
4405
4406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4407 if (!msg)
4408 return -ENOMEM;
4409
4410 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4411 dev, dst, next_hop, &pinfo) < 0) {
4412 nlmsg_free(msg);
4413 return -ENOBUFS;
4414 }
4415
4416 return genlmsg_reply(msg, info);
4417 }
4418
4419 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4420 {
4421 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4422 struct net_device *dev = info->user_ptr[1];
4423 u8 *dst = NULL;
4424 u8 *next_hop = NULL;
4425
4426 if (!info->attrs[NL80211_ATTR_MAC])
4427 return -EINVAL;
4428
4429 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4430 return -EINVAL;
4431
4432 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4433 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4434
4435 if (!rdev->ops->change_mpath)
4436 return -EOPNOTSUPP;
4437
4438 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4439 return -EOPNOTSUPP;
4440
4441 return rdev_change_mpath(rdev, dev, dst, next_hop);
4442 }
4443
4444 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4445 {
4446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4447 struct net_device *dev = info->user_ptr[1];
4448 u8 *dst = NULL;
4449 u8 *next_hop = NULL;
4450
4451 if (!info->attrs[NL80211_ATTR_MAC])
4452 return -EINVAL;
4453
4454 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4455 return -EINVAL;
4456
4457 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4458 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4459
4460 if (!rdev->ops->add_mpath)
4461 return -EOPNOTSUPP;
4462
4463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4464 return -EOPNOTSUPP;
4465
4466 return rdev_add_mpath(rdev, dev, dst, next_hop);
4467 }
4468
4469 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4470 {
4471 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4472 struct net_device *dev = info->user_ptr[1];
4473 u8 *dst = NULL;
4474
4475 if (info->attrs[NL80211_ATTR_MAC])
4476 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4477
4478 if (!rdev->ops->del_mpath)
4479 return -EOPNOTSUPP;
4480
4481 return rdev_del_mpath(rdev, dev, dst);
4482 }
4483
4484 static int nl80211_set_bss(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 wireless_dev *wdev = dev->ieee80211_ptr;
4489 struct bss_parameters params;
4490 int err;
4491
4492 memset(&params, 0, sizeof(params));
4493 /* default to not changing parameters */
4494 params.use_cts_prot = -1;
4495 params.use_short_preamble = -1;
4496 params.use_short_slot_time = -1;
4497 params.ap_isolate = -1;
4498 params.ht_opmode = -1;
4499 params.p2p_ctwindow = -1;
4500 params.p2p_opp_ps = -1;
4501
4502 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4503 params.use_cts_prot =
4504 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4505 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4506 params.use_short_preamble =
4507 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4508 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4509 params.use_short_slot_time =
4510 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4511 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4512 params.basic_rates =
4513 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4514 params.basic_rates_len =
4515 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4516 }
4517 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4518 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4519 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4520 params.ht_opmode =
4521 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4522
4523 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4525 return -EINVAL;
4526 params.p2p_ctwindow =
4527 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4528 if (params.p2p_ctwindow < 0)
4529 return -EINVAL;
4530 if (params.p2p_ctwindow != 0 &&
4531 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4532 return -EINVAL;
4533 }
4534
4535 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4536 u8 tmp;
4537
4538 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4539 return -EINVAL;
4540 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4541 if (tmp > 1)
4542 return -EINVAL;
4543 params.p2p_opp_ps = tmp;
4544 if (params.p2p_opp_ps &&
4545 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4546 return -EINVAL;
4547 }
4548
4549 if (!rdev->ops->change_bss)
4550 return -EOPNOTSUPP;
4551
4552 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4553 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4554 return -EOPNOTSUPP;
4555
4556 wdev_lock(wdev);
4557 err = rdev_change_bss(rdev, dev, &params);
4558 wdev_unlock(wdev);
4559
4560 return err;
4561 }
4562
4563 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4564 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4565 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4566 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4567 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4568 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4569 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4570 };
4571
4572 static int parse_reg_rule(struct nlattr *tb[],
4573 struct ieee80211_reg_rule *reg_rule)
4574 {
4575 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4576 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4577
4578 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4579 return -EINVAL;
4580 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4581 return -EINVAL;
4582 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4583 return -EINVAL;
4584 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4585 return -EINVAL;
4586 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4587 return -EINVAL;
4588
4589 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4590
4591 freq_range->start_freq_khz =
4592 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4593 freq_range->end_freq_khz =
4594 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4595 freq_range->max_bandwidth_khz =
4596 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4597
4598 power_rule->max_eirp =
4599 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4600
4601 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4602 power_rule->max_antenna_gain =
4603 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4604
4605 return 0;
4606 }
4607
4608 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4609 {
4610 int r;
4611 char *data = NULL;
4612 enum nl80211_user_reg_hint_type user_reg_hint_type;
4613
4614 /*
4615 * You should only get this when cfg80211 hasn't yet initialized
4616 * completely when built-in to the kernel right between the time
4617 * window between nl80211_init() and regulatory_init(), if that is
4618 * even possible.
4619 */
4620 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4621 return -EINPROGRESS;
4622
4623 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4624 return -EINVAL;
4625
4626 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4627
4628 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4629 user_reg_hint_type =
4630 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4631 else
4632 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4633
4634 switch (user_reg_hint_type) {
4635 case NL80211_USER_REG_HINT_USER:
4636 case NL80211_USER_REG_HINT_CELL_BASE:
4637 break;
4638 default:
4639 return -EINVAL;
4640 }
4641
4642 r = regulatory_hint_user(data, user_reg_hint_type);
4643
4644 return r;
4645 }
4646
4647 static int nl80211_get_mesh_config(struct sk_buff *skb,
4648 struct genl_info *info)
4649 {
4650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4651 struct net_device *dev = info->user_ptr[1];
4652 struct wireless_dev *wdev = dev->ieee80211_ptr;
4653 struct mesh_config cur_params;
4654 int err = 0;
4655 void *hdr;
4656 struct nlattr *pinfoattr;
4657 struct sk_buff *msg;
4658
4659 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4660 return -EOPNOTSUPP;
4661
4662 if (!rdev->ops->get_mesh_config)
4663 return -EOPNOTSUPP;
4664
4665 wdev_lock(wdev);
4666 /* If not connected, get default parameters */
4667 if (!wdev->mesh_id_len)
4668 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4669 else
4670 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4671 wdev_unlock(wdev);
4672
4673 if (err)
4674 return err;
4675
4676 /* Draw up a netlink message to send back */
4677 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4678 if (!msg)
4679 return -ENOMEM;
4680 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4681 NL80211_CMD_GET_MESH_CONFIG);
4682 if (!hdr)
4683 goto out;
4684 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4685 if (!pinfoattr)
4686 goto nla_put_failure;
4687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4688 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4689 cur_params.dot11MeshRetryTimeout) ||
4690 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4691 cur_params.dot11MeshConfirmTimeout) ||
4692 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4693 cur_params.dot11MeshHoldingTimeout) ||
4694 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4695 cur_params.dot11MeshMaxPeerLinks) ||
4696 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4697 cur_params.dot11MeshMaxRetries) ||
4698 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4699 cur_params.dot11MeshTTL) ||
4700 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4701 cur_params.element_ttl) ||
4702 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4703 cur_params.auto_open_plinks) ||
4704 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4705 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4706 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4707 cur_params.dot11MeshHWMPmaxPREQretries) ||
4708 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4709 cur_params.path_refresh_time) ||
4710 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4711 cur_params.min_discovery_timeout) ||
4712 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4713 cur_params.dot11MeshHWMPactivePathTimeout) ||
4714 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4715 cur_params.dot11MeshHWMPpreqMinInterval) ||
4716 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4717 cur_params.dot11MeshHWMPperrMinInterval) ||
4718 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4719 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4720 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4721 cur_params.dot11MeshHWMPRootMode) ||
4722 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4723 cur_params.dot11MeshHWMPRannInterval) ||
4724 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4725 cur_params.dot11MeshGateAnnouncementProtocol) ||
4726 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4727 cur_params.dot11MeshForwarding) ||
4728 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4729 cur_params.rssi_threshold) ||
4730 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4731 cur_params.ht_opmode) ||
4732 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4733 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4734 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4735 cur_params.dot11MeshHWMProotInterval) ||
4736 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4737 cur_params.dot11MeshHWMPconfirmationInterval) ||
4738 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4739 cur_params.power_mode) ||
4740 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4741 cur_params.dot11MeshAwakeWindowDuration) ||
4742 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4743 cur_params.plink_timeout))
4744 goto nla_put_failure;
4745 nla_nest_end(msg, pinfoattr);
4746 genlmsg_end(msg, hdr);
4747 return genlmsg_reply(msg, info);
4748
4749 nla_put_failure:
4750 genlmsg_cancel(msg, hdr);
4751 out:
4752 nlmsg_free(msg);
4753 return -ENOBUFS;
4754 }
4755
4756 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4757 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4758 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4759 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4760 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4761 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4762 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4763 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4764 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4765 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4766 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4767 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4768 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4769 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4770 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4771 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4772 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4773 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4774 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4775 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4776 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4777 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4778 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4779 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4780 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4781 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4782 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4783 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4784 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4785 };
4786
4787 static const struct nla_policy
4788 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4789 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4790 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4791 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4792 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4793 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4794 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4795 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4796 .len = IEEE80211_MAX_DATA_LEN },
4797 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4798 };
4799
4800 static int nl80211_parse_mesh_config(struct genl_info *info,
4801 struct mesh_config *cfg,
4802 u32 *mask_out)
4803 {
4804 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4805 u32 mask = 0;
4806
4807 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4808 do { \
4809 if (tb[attr]) { \
4810 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4811 return -EINVAL; \
4812 cfg->param = fn(tb[attr]); \
4813 mask |= (1 << (attr - 1)); \
4814 } \
4815 } while (0)
4816
4817
4818 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4819 return -EINVAL;
4820 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4821 info->attrs[NL80211_ATTR_MESH_CONFIG],
4822 nl80211_meshconf_params_policy))
4823 return -EINVAL;
4824
4825 /* This makes sure that there aren't more than 32 mesh config
4826 * parameters (otherwise our bitfield scheme would not work.) */
4827 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4828
4829 /* Fill in the params struct */
4830 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4831 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4832 nla_get_u16);
4833 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4834 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4835 nla_get_u16);
4836 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4837 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4838 nla_get_u16);
4839 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4840 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4841 nla_get_u16);
4842 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4843 mask, NL80211_MESHCONF_MAX_RETRIES,
4844 nla_get_u8);
4845 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4846 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4847 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4848 mask, NL80211_MESHCONF_ELEMENT_TTL,
4849 nla_get_u8);
4850 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4851 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4852 nla_get_u8);
4853 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4854 1, 255, mask,
4855 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4856 nla_get_u32);
4857 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4858 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4859 nla_get_u8);
4860 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4861 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4862 nla_get_u32);
4863 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4864 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4865 nla_get_u16);
4866 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4867 1, 65535, mask,
4868 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4869 nla_get_u32);
4870 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4871 1, 65535, mask,
4872 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4873 nla_get_u16);
4874 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4875 1, 65535, mask,
4876 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4877 nla_get_u16);
4878 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4879 dot11MeshHWMPnetDiameterTraversalTime,
4880 1, 65535, mask,
4881 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4882 nla_get_u16);
4883 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4884 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4885 nla_get_u8);
4886 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4887 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4888 nla_get_u16);
4889 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4890 dot11MeshGateAnnouncementProtocol, 0, 1,
4891 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4892 nla_get_u8);
4893 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4894 mask, NL80211_MESHCONF_FORWARDING,
4895 nla_get_u8);
4896 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4897 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4898 nla_get_s32);
4899 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4900 mask, NL80211_MESHCONF_HT_OPMODE,
4901 nla_get_u16);
4902 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4903 1, 65535, mask,
4904 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4905 nla_get_u32);
4906 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4907 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4908 nla_get_u16);
4909 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4910 dot11MeshHWMPconfirmationInterval,
4911 1, 65535, mask,
4912 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4913 nla_get_u16);
4914 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4915 NL80211_MESH_POWER_ACTIVE,
4916 NL80211_MESH_POWER_MAX,
4917 mask, NL80211_MESHCONF_POWER_MODE,
4918 nla_get_u32);
4919 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4920 0, 65535, mask,
4921 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4922 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4923 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4924 nla_get_u32);
4925 if (mask_out)
4926 *mask_out = mask;
4927
4928 return 0;
4929
4930 #undef FILL_IN_MESH_PARAM_IF_SET
4931 }
4932
4933 static int nl80211_parse_mesh_setup(struct genl_info *info,
4934 struct mesh_setup *setup)
4935 {
4936 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4937 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4938
4939 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4940 return -EINVAL;
4941 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4942 info->attrs[NL80211_ATTR_MESH_SETUP],
4943 nl80211_mesh_setup_params_policy))
4944 return -EINVAL;
4945
4946 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4947 setup->sync_method =
4948 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4949 IEEE80211_SYNC_METHOD_VENDOR :
4950 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4951
4952 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4953 setup->path_sel_proto =
4954 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4955 IEEE80211_PATH_PROTOCOL_VENDOR :
4956 IEEE80211_PATH_PROTOCOL_HWMP;
4957
4958 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4959 setup->path_metric =
4960 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4961 IEEE80211_PATH_METRIC_VENDOR :
4962 IEEE80211_PATH_METRIC_AIRTIME;
4963
4964
4965 if (tb[NL80211_MESH_SETUP_IE]) {
4966 struct nlattr *ieattr =
4967 tb[NL80211_MESH_SETUP_IE];
4968 if (!is_valid_ie_attr(ieattr))
4969 return -EINVAL;
4970 setup->ie = nla_data(ieattr);
4971 setup->ie_len = nla_len(ieattr);
4972 }
4973 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4974 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4975 return -EINVAL;
4976 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4977 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4978 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4979 if (setup->is_secure)
4980 setup->user_mpm = true;
4981
4982 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4983 if (!setup->user_mpm)
4984 return -EINVAL;
4985 setup->auth_id =
4986 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4987 }
4988
4989 return 0;
4990 }
4991
4992 static int nl80211_update_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 cfg;
4999 u32 mask;
5000 int err;
5001
5002 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5003 return -EOPNOTSUPP;
5004
5005 if (!rdev->ops->update_mesh_config)
5006 return -EOPNOTSUPP;
5007
5008 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5009 if (err)
5010 return err;
5011
5012 wdev_lock(wdev);
5013 if (!wdev->mesh_id_len)
5014 err = -ENOLINK;
5015
5016 if (!err)
5017 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5018
5019 wdev_unlock(wdev);
5020
5021 return err;
5022 }
5023
5024 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5025 {
5026 const struct ieee80211_regdomain *regdom;
5027 struct sk_buff *msg;
5028 void *hdr = NULL;
5029 struct nlattr *nl_reg_rules;
5030 unsigned int i;
5031
5032 if (!cfg80211_regdomain)
5033 return -EINVAL;
5034
5035 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5036 if (!msg)
5037 return -ENOBUFS;
5038
5039 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5040 NL80211_CMD_GET_REG);
5041 if (!hdr)
5042 goto put_failure;
5043
5044 if (reg_last_request_cell_base() &&
5045 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5046 NL80211_USER_REG_HINT_CELL_BASE))
5047 goto nla_put_failure;
5048
5049 rcu_read_lock();
5050 regdom = rcu_dereference(cfg80211_regdomain);
5051
5052 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5053 (regdom->dfs_region &&
5054 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5055 goto nla_put_failure_rcu;
5056
5057 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5058 if (!nl_reg_rules)
5059 goto nla_put_failure_rcu;
5060
5061 for (i = 0; i < regdom->n_reg_rules; i++) {
5062 struct nlattr *nl_reg_rule;
5063 const struct ieee80211_reg_rule *reg_rule;
5064 const struct ieee80211_freq_range *freq_range;
5065 const struct ieee80211_power_rule *power_rule;
5066
5067 reg_rule = &regdom->reg_rules[i];
5068 freq_range = &reg_rule->freq_range;
5069 power_rule = &reg_rule->power_rule;
5070
5071 nl_reg_rule = nla_nest_start(msg, i);
5072 if (!nl_reg_rule)
5073 goto nla_put_failure_rcu;
5074
5075 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5076 reg_rule->flags) ||
5077 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5078 freq_range->start_freq_khz) ||
5079 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5080 freq_range->end_freq_khz) ||
5081 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5082 freq_range->max_bandwidth_khz) ||
5083 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5084 power_rule->max_antenna_gain) ||
5085 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5086 power_rule->max_eirp))
5087 goto nla_put_failure_rcu;
5088
5089 nla_nest_end(msg, nl_reg_rule);
5090 }
5091 rcu_read_unlock();
5092
5093 nla_nest_end(msg, nl_reg_rules);
5094
5095 genlmsg_end(msg, hdr);
5096 return genlmsg_reply(msg, info);
5097
5098 nla_put_failure_rcu:
5099 rcu_read_unlock();
5100 nla_put_failure:
5101 genlmsg_cancel(msg, hdr);
5102 put_failure:
5103 nlmsg_free(msg);
5104 return -EMSGSIZE;
5105 }
5106
5107 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5108 {
5109 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5110 struct nlattr *nl_reg_rule;
5111 char *alpha2 = NULL;
5112 int rem_reg_rules = 0, r = 0;
5113 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5114 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5115 struct ieee80211_regdomain *rd = NULL;
5116
5117 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5118 return -EINVAL;
5119
5120 if (!info->attrs[NL80211_ATTR_REG_RULES])
5121 return -EINVAL;
5122
5123 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5124
5125 if (info->attrs[NL80211_ATTR_DFS_REGION])
5126 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5127
5128 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5129 rem_reg_rules) {
5130 num_rules++;
5131 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5132 return -EINVAL;
5133 }
5134
5135 if (!reg_is_valid_request(alpha2))
5136 return -EINVAL;
5137
5138 size_of_regd = sizeof(struct ieee80211_regdomain) +
5139 num_rules * sizeof(struct ieee80211_reg_rule);
5140
5141 rd = kzalloc(size_of_regd, GFP_KERNEL);
5142 if (!rd)
5143 return -ENOMEM;
5144
5145 rd->n_reg_rules = num_rules;
5146 rd->alpha2[0] = alpha2[0];
5147 rd->alpha2[1] = alpha2[1];
5148
5149 /*
5150 * Disable DFS master mode if the DFS region was
5151 * not supported or known on this kernel.
5152 */
5153 if (reg_supported_dfs_region(dfs_region))
5154 rd->dfs_region = dfs_region;
5155
5156 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5157 rem_reg_rules) {
5158 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5159 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5160 reg_rule_policy);
5161 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5162 if (r)
5163 goto bad_reg;
5164
5165 rule_idx++;
5166
5167 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5168 r = -EINVAL;
5169 goto bad_reg;
5170 }
5171 }
5172
5173 r = set_regdom(rd);
5174 /* set_regdom took ownership */
5175 rd = NULL;
5176
5177 bad_reg:
5178 kfree(rd);
5179 return r;
5180 }
5181
5182 static int validate_scan_freqs(struct nlattr *freqs)
5183 {
5184 struct nlattr *attr1, *attr2;
5185 int n_channels = 0, tmp1, tmp2;
5186
5187 nla_for_each_nested(attr1, freqs, tmp1) {
5188 n_channels++;
5189 /*
5190 * Some hardware has a limited channel list for
5191 * scanning, and it is pretty much nonsensical
5192 * to scan for a channel twice, so disallow that
5193 * and don't require drivers to check that the
5194 * channel list they get isn't longer than what
5195 * they can scan, as long as they can scan all
5196 * the channels they registered at once.
5197 */
5198 nla_for_each_nested(attr2, freqs, tmp2)
5199 if (attr1 != attr2 &&
5200 nla_get_u32(attr1) == nla_get_u32(attr2))
5201 return 0;
5202 }
5203
5204 return n_channels;
5205 }
5206
5207 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5208 {
5209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5210 struct wireless_dev *wdev = info->user_ptr[1];
5211 struct cfg80211_scan_request *request;
5212 struct nlattr *attr;
5213 struct wiphy *wiphy;
5214 int err, tmp, n_ssids = 0, n_channels, i;
5215 size_t ie_len;
5216
5217 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5218 return -EINVAL;
5219
5220 wiphy = &rdev->wiphy;
5221
5222 if (!rdev->ops->scan)
5223 return -EOPNOTSUPP;
5224
5225 if (rdev->scan_req) {
5226 err = -EBUSY;
5227 goto unlock;
5228 }
5229
5230 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5231 n_channels = validate_scan_freqs(
5232 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5233 if (!n_channels) {
5234 err = -EINVAL;
5235 goto unlock;
5236 }
5237 } else {
5238 enum ieee80211_band band;
5239 n_channels = 0;
5240
5241 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5242 if (wiphy->bands[band])
5243 n_channels += wiphy->bands[band]->n_channels;
5244 }
5245
5246 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5247 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5248 n_ssids++;
5249
5250 if (n_ssids > wiphy->max_scan_ssids) {
5251 err = -EINVAL;
5252 goto unlock;
5253 }
5254
5255 if (info->attrs[NL80211_ATTR_IE])
5256 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5257 else
5258 ie_len = 0;
5259
5260 if (ie_len > wiphy->max_scan_ie_len) {
5261 err = -EINVAL;
5262 goto unlock;
5263 }
5264
5265 request = kzalloc(sizeof(*request)
5266 + sizeof(*request->ssids) * n_ssids
5267 + sizeof(*request->channels) * n_channels
5268 + ie_len, GFP_KERNEL);
5269 if (!request) {
5270 err = -ENOMEM;
5271 goto unlock;
5272 }
5273
5274 if (n_ssids)
5275 request->ssids = (void *)&request->channels[n_channels];
5276 request->n_ssids = n_ssids;
5277 if (ie_len) {
5278 if (request->ssids)
5279 request->ie = (void *)(request->ssids + n_ssids);
5280 else
5281 request->ie = (void *)(request->channels + n_channels);
5282 }
5283
5284 i = 0;
5285 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5286 /* user specified, bail out if channel not found */
5287 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5288 struct ieee80211_channel *chan;
5289
5290 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5291
5292 if (!chan) {
5293 err = -EINVAL;
5294 goto out_free;
5295 }
5296
5297 /* ignore disabled channels */
5298 if (chan->flags & IEEE80211_CHAN_DISABLED)
5299 continue;
5300
5301 request->channels[i] = chan;
5302 i++;
5303 }
5304 } else {
5305 enum ieee80211_band band;
5306
5307 /* all channels */
5308 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5309 int j;
5310 if (!wiphy->bands[band])
5311 continue;
5312 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5313 struct ieee80211_channel *chan;
5314
5315 chan = &wiphy->bands[band]->channels[j];
5316
5317 if (chan->flags & IEEE80211_CHAN_DISABLED)
5318 continue;
5319
5320 request->channels[i] = chan;
5321 i++;
5322 }
5323 }
5324 }
5325
5326 if (!i) {
5327 err = -EINVAL;
5328 goto out_free;
5329 }
5330
5331 request->n_channels = i;
5332
5333 i = 0;
5334 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5335 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5336 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5337 err = -EINVAL;
5338 goto out_free;
5339 }
5340 request->ssids[i].ssid_len = nla_len(attr);
5341 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5342 i++;
5343 }
5344 }
5345
5346 if (info->attrs[NL80211_ATTR_IE]) {
5347 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5348 memcpy((void *)request->ie,
5349 nla_data(info->attrs[NL80211_ATTR_IE]),
5350 request->ie_len);
5351 }
5352
5353 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5354 if (wiphy->bands[i])
5355 request->rates[i] =
5356 (1 << wiphy->bands[i]->n_bitrates) - 1;
5357
5358 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5359 nla_for_each_nested(attr,
5360 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5361 tmp) {
5362 enum ieee80211_band band = nla_type(attr);
5363
5364 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5365 err = -EINVAL;
5366 goto out_free;
5367 }
5368 err = ieee80211_get_ratemask(wiphy->bands[band],
5369 nla_data(attr),
5370 nla_len(attr),
5371 &request->rates[band]);
5372 if (err)
5373 goto out_free;
5374 }
5375 }
5376
5377 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5378 request->flags = nla_get_u32(
5379 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5380 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5381 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5382 err = -EOPNOTSUPP;
5383 goto out_free;
5384 }
5385 }
5386
5387 request->no_cck =
5388 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5389
5390 request->wdev = wdev;
5391 request->wiphy = &rdev->wiphy;
5392 request->scan_start = jiffies;
5393
5394 rdev->scan_req = request;
5395 err = rdev_scan(rdev, request);
5396
5397 if (!err) {
5398 nl80211_send_scan_start(rdev, wdev);
5399 if (wdev->netdev)
5400 dev_hold(wdev->netdev);
5401 } else {
5402 out_free:
5403 rdev->scan_req = NULL;
5404 kfree(request);
5405 }
5406
5407 unlock:
5408 return err;
5409 }
5410
5411 static int nl80211_start_sched_scan(struct sk_buff *skb,
5412 struct genl_info *info)
5413 {
5414 struct cfg80211_sched_scan_request *request;
5415 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5416 struct net_device *dev = info->user_ptr[1];
5417 struct nlattr *attr;
5418 struct wiphy *wiphy;
5419 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5420 u32 interval;
5421 enum ieee80211_band band;
5422 size_t ie_len;
5423 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5424
5425 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5426 !rdev->ops->sched_scan_start)
5427 return -EOPNOTSUPP;
5428
5429 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5430 return -EINVAL;
5431
5432 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5433 return -EINVAL;
5434
5435 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5436 if (interval == 0)
5437 return -EINVAL;
5438
5439 wiphy = &rdev->wiphy;
5440
5441 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5442 n_channels = validate_scan_freqs(
5443 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5444 if (!n_channels)
5445 return -EINVAL;
5446 } else {
5447 n_channels = 0;
5448
5449 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5450 if (wiphy->bands[band])
5451 n_channels += wiphy->bands[band]->n_channels;
5452 }
5453
5454 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5455 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5456 tmp)
5457 n_ssids++;
5458
5459 if (n_ssids > wiphy->max_sched_scan_ssids)
5460 return -EINVAL;
5461
5462 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5463 nla_for_each_nested(attr,
5464 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5465 tmp)
5466 n_match_sets++;
5467
5468 if (n_match_sets > wiphy->max_match_sets)
5469 return -EINVAL;
5470
5471 if (info->attrs[NL80211_ATTR_IE])
5472 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5473 else
5474 ie_len = 0;
5475
5476 if (ie_len > wiphy->max_sched_scan_ie_len)
5477 return -EINVAL;
5478
5479 if (rdev->sched_scan_req) {
5480 err = -EINPROGRESS;
5481 goto out;
5482 }
5483
5484 request = kzalloc(sizeof(*request)
5485 + sizeof(*request->ssids) * n_ssids
5486 + sizeof(*request->match_sets) * n_match_sets
5487 + sizeof(*request->channels) * n_channels
5488 + ie_len, GFP_KERNEL);
5489 if (!request) {
5490 err = -ENOMEM;
5491 goto out;
5492 }
5493
5494 if (n_ssids)
5495 request->ssids = (void *)&request->channels[n_channels];
5496 request->n_ssids = n_ssids;
5497 if (ie_len) {
5498 if (request->ssids)
5499 request->ie = (void *)(request->ssids + n_ssids);
5500 else
5501 request->ie = (void *)(request->channels + n_channels);
5502 }
5503
5504 if (n_match_sets) {
5505 if (request->ie)
5506 request->match_sets = (void *)(request->ie + ie_len);
5507 else if (request->ssids)
5508 request->match_sets =
5509 (void *)(request->ssids + n_ssids);
5510 else
5511 request->match_sets =
5512 (void *)(request->channels + n_channels);
5513 }
5514 request->n_match_sets = n_match_sets;
5515
5516 i = 0;
5517 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5518 /* user specified, bail out if channel not found */
5519 nla_for_each_nested(attr,
5520 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5521 tmp) {
5522 struct ieee80211_channel *chan;
5523
5524 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5525
5526 if (!chan) {
5527 err = -EINVAL;
5528 goto out_free;
5529 }
5530
5531 /* ignore disabled channels */
5532 if (chan->flags & IEEE80211_CHAN_DISABLED)
5533 continue;
5534
5535 request->channels[i] = chan;
5536 i++;
5537 }
5538 } else {
5539 /* all channels */
5540 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5541 int j;
5542 if (!wiphy->bands[band])
5543 continue;
5544 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5545 struct ieee80211_channel *chan;
5546
5547 chan = &wiphy->bands[band]->channels[j];
5548
5549 if (chan->flags & IEEE80211_CHAN_DISABLED)
5550 continue;
5551
5552 request->channels[i] = chan;
5553 i++;
5554 }
5555 }
5556 }
5557
5558 if (!i) {
5559 err = -EINVAL;
5560 goto out_free;
5561 }
5562
5563 request->n_channels = i;
5564
5565 i = 0;
5566 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5567 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5568 tmp) {
5569 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5570 err = -EINVAL;
5571 goto out_free;
5572 }
5573 request->ssids[i].ssid_len = nla_len(attr);
5574 memcpy(request->ssids[i].ssid, nla_data(attr),
5575 nla_len(attr));
5576 i++;
5577 }
5578 }
5579
5580 i = 0;
5581 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5582 nla_for_each_nested(attr,
5583 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5584 tmp) {
5585 struct nlattr *ssid, *rssi;
5586
5587 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5588 nla_data(attr), nla_len(attr),
5589 nl80211_match_policy);
5590 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5591 if (ssid) {
5592 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5593 err = -EINVAL;
5594 goto out_free;
5595 }
5596 memcpy(request->match_sets[i].ssid.ssid,
5597 nla_data(ssid), nla_len(ssid));
5598 request->match_sets[i].ssid.ssid_len =
5599 nla_len(ssid);
5600 }
5601 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5602 if (rssi)
5603 request->rssi_thold = nla_get_u32(rssi);
5604 else
5605 request->rssi_thold =
5606 NL80211_SCAN_RSSI_THOLD_OFF;
5607 i++;
5608 }
5609 }
5610
5611 if (info->attrs[NL80211_ATTR_IE]) {
5612 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5613 memcpy((void *)request->ie,
5614 nla_data(info->attrs[NL80211_ATTR_IE]),
5615 request->ie_len);
5616 }
5617
5618 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5619 request->flags = nla_get_u32(
5620 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5621 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5622 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5623 err = -EOPNOTSUPP;
5624 goto out_free;
5625 }
5626 }
5627
5628 request->dev = dev;
5629 request->wiphy = &rdev->wiphy;
5630 request->interval = interval;
5631 request->scan_start = jiffies;
5632
5633 err = rdev_sched_scan_start(rdev, dev, request);
5634 if (!err) {
5635 rdev->sched_scan_req = request;
5636 nl80211_send_sched_scan(rdev, dev,
5637 NL80211_CMD_START_SCHED_SCAN);
5638 goto out;
5639 }
5640
5641 out_free:
5642 kfree(request);
5643 out:
5644 return err;
5645 }
5646
5647 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5648 struct genl_info *info)
5649 {
5650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5651
5652 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5653 !rdev->ops->sched_scan_stop)
5654 return -EOPNOTSUPP;
5655
5656 return __cfg80211_stop_sched_scan(rdev, false);
5657 }
5658
5659 static int nl80211_start_radar_detection(struct sk_buff *skb,
5660 struct genl_info *info)
5661 {
5662 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5663 struct net_device *dev = info->user_ptr[1];
5664 struct wireless_dev *wdev = dev->ieee80211_ptr;
5665 struct cfg80211_chan_def chandef;
5666 int err;
5667
5668 err = nl80211_parse_chandef(rdev, info, &chandef);
5669 if (err)
5670 return err;
5671
5672 if (netif_carrier_ok(dev))
5673 return -EBUSY;
5674
5675 if (wdev->cac_started)
5676 return -EBUSY;
5677
5678 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5679 if (err < 0)
5680 return err;
5681
5682 if (err == 0)
5683 return -EINVAL;
5684
5685 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5686 return -EINVAL;
5687
5688 if (!rdev->ops->start_radar_detection)
5689 return -EOPNOTSUPP;
5690
5691 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5692 chandef.chan, CHAN_MODE_SHARED,
5693 BIT(chandef.width));
5694 if (err)
5695 return err;
5696
5697 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5698 if (!err) {
5699 wdev->channel = chandef.chan;
5700 wdev->cac_started = true;
5701 wdev->cac_start_time = jiffies;
5702 }
5703 return err;
5704 }
5705
5706 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5707 {
5708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5709 struct net_device *dev = info->user_ptr[1];
5710 struct wireless_dev *wdev = dev->ieee80211_ptr;
5711 struct cfg80211_csa_settings params;
5712 /* csa_attrs is defined static to avoid waste of stack size - this
5713 * function is called under RTNL lock, so this should not be a problem.
5714 */
5715 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5716 u8 radar_detect_width = 0;
5717 int err;
5718 bool need_new_beacon = false;
5719
5720 if (!rdev->ops->channel_switch ||
5721 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5722 return -EOPNOTSUPP;
5723
5724 switch (dev->ieee80211_ptr->iftype) {
5725 case NL80211_IFTYPE_AP:
5726 case NL80211_IFTYPE_P2P_GO:
5727 need_new_beacon = true;
5728
5729 /* useless if AP is not running */
5730 if (!wdev->beacon_interval)
5731 return -EINVAL;
5732 break;
5733 case NL80211_IFTYPE_ADHOC:
5734 case NL80211_IFTYPE_MESH_POINT:
5735 break;
5736 default:
5737 return -EOPNOTSUPP;
5738 }
5739
5740 memset(&params, 0, sizeof(params));
5741
5742 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5743 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5744 return -EINVAL;
5745
5746 /* only important for AP, IBSS and mesh create IEs internally */
5747 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5748 return -EINVAL;
5749
5750 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5751
5752 if (!need_new_beacon)
5753 goto skip_beacons;
5754
5755 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5756 if (err)
5757 return err;
5758
5759 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5760 info->attrs[NL80211_ATTR_CSA_IES],
5761 nl80211_policy);
5762 if (err)
5763 return err;
5764
5765 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5766 if (err)
5767 return err;
5768
5769 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5770 return -EINVAL;
5771
5772 params.counter_offset_beacon =
5773 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5774 if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5775 return -EINVAL;
5776
5777 /* sanity check - counters should be the same */
5778 if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5779 params.count)
5780 return -EINVAL;
5781
5782 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5783 params.counter_offset_presp =
5784 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5785 if (params.counter_offset_presp >=
5786 params.beacon_csa.probe_resp_len)
5787 return -EINVAL;
5788
5789 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5790 params.count)
5791 return -EINVAL;
5792 }
5793
5794 skip_beacons:
5795 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5796 if (err)
5797 return err;
5798
5799 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5800 return -EINVAL;
5801
5802 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5803 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5804 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5805 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5806 &params.chandef);
5807 if (err < 0) {
5808 return err;
5809 } else if (err) {
5810 radar_detect_width = BIT(params.chandef.width);
5811 params.radar_required = true;
5812 }
5813 }
5814
5815 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5816 params.chandef.chan,
5817 CHAN_MODE_SHARED,
5818 radar_detect_width);
5819 if (err)
5820 return err;
5821
5822 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5823 params.block_tx = true;
5824
5825 wdev_lock(wdev);
5826 err = rdev_channel_switch(rdev, dev, &params);
5827 wdev_unlock(wdev);
5828
5829 return err;
5830 }
5831
5832 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5833 u32 seq, int flags,
5834 struct cfg80211_registered_device *rdev,
5835 struct wireless_dev *wdev,
5836 struct cfg80211_internal_bss *intbss)
5837 {
5838 struct cfg80211_bss *res = &intbss->pub;
5839 const struct cfg80211_bss_ies *ies;
5840 void *hdr;
5841 struct nlattr *bss;
5842 bool tsf = false;
5843
5844 ASSERT_WDEV_LOCK(wdev);
5845
5846 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5847 NL80211_CMD_NEW_SCAN_RESULTS);
5848 if (!hdr)
5849 return -1;
5850
5851 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5852
5853 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5854 goto nla_put_failure;
5855 if (wdev->netdev &&
5856 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5857 goto nla_put_failure;
5858 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5859 goto nla_put_failure;
5860
5861 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5862 if (!bss)
5863 goto nla_put_failure;
5864 if ((!is_zero_ether_addr(res->bssid) &&
5865 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5866 goto nla_put_failure;
5867
5868 rcu_read_lock();
5869 ies = rcu_dereference(res->ies);
5870 if (ies) {
5871 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5872 goto fail_unlock_rcu;
5873 tsf = true;
5874 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5875 ies->len, ies->data))
5876 goto fail_unlock_rcu;
5877 }
5878 ies = rcu_dereference(res->beacon_ies);
5879 if (ies) {
5880 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5881 goto fail_unlock_rcu;
5882 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5883 ies->len, ies->data))
5884 goto fail_unlock_rcu;
5885 }
5886 rcu_read_unlock();
5887
5888 if (res->beacon_interval &&
5889 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5890 goto nla_put_failure;
5891 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5892 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5893 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5894 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5895 jiffies_to_msecs(jiffies - intbss->ts)))
5896 goto nla_put_failure;
5897
5898 switch (rdev->wiphy.signal_type) {
5899 case CFG80211_SIGNAL_TYPE_MBM:
5900 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5901 goto nla_put_failure;
5902 break;
5903 case CFG80211_SIGNAL_TYPE_UNSPEC:
5904 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5905 goto nla_put_failure;
5906 break;
5907 default:
5908 break;
5909 }
5910
5911 switch (wdev->iftype) {
5912 case NL80211_IFTYPE_P2P_CLIENT:
5913 case NL80211_IFTYPE_STATION:
5914 if (intbss == wdev->current_bss &&
5915 nla_put_u32(msg, NL80211_BSS_STATUS,
5916 NL80211_BSS_STATUS_ASSOCIATED))
5917 goto nla_put_failure;
5918 break;
5919 case NL80211_IFTYPE_ADHOC:
5920 if (intbss == wdev->current_bss &&
5921 nla_put_u32(msg, NL80211_BSS_STATUS,
5922 NL80211_BSS_STATUS_IBSS_JOINED))
5923 goto nla_put_failure;
5924 break;
5925 default:
5926 break;
5927 }
5928
5929 nla_nest_end(msg, bss);
5930
5931 return genlmsg_end(msg, hdr);
5932
5933 fail_unlock_rcu:
5934 rcu_read_unlock();
5935 nla_put_failure:
5936 genlmsg_cancel(msg, hdr);
5937 return -EMSGSIZE;
5938 }
5939
5940 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5941 {
5942 struct cfg80211_registered_device *rdev;
5943 struct cfg80211_internal_bss *scan;
5944 struct wireless_dev *wdev;
5945 int start = cb->args[2], idx = 0;
5946 int err;
5947
5948 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5949 if (err)
5950 return err;
5951
5952 wdev_lock(wdev);
5953 spin_lock_bh(&rdev->bss_lock);
5954 cfg80211_bss_expire(rdev);
5955
5956 cb->seq = rdev->bss_generation;
5957
5958 list_for_each_entry(scan, &rdev->bss_list, list) {
5959 if (++idx <= start)
5960 continue;
5961 if (nl80211_send_bss(skb, cb,
5962 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5963 rdev, wdev, scan) < 0) {
5964 idx--;
5965 break;
5966 }
5967 }
5968
5969 spin_unlock_bh(&rdev->bss_lock);
5970 wdev_unlock(wdev);
5971
5972 cb->args[2] = idx;
5973 nl80211_finish_wdev_dump(rdev);
5974
5975 return skb->len;
5976 }
5977
5978 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5979 int flags, struct net_device *dev,
5980 struct survey_info *survey)
5981 {
5982 void *hdr;
5983 struct nlattr *infoattr;
5984
5985 hdr = nl80211hdr_put(msg, portid, seq, flags,
5986 NL80211_CMD_NEW_SURVEY_RESULTS);
5987 if (!hdr)
5988 return -ENOMEM;
5989
5990 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5991 goto nla_put_failure;
5992
5993 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5994 if (!infoattr)
5995 goto nla_put_failure;
5996
5997 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5998 survey->channel->center_freq))
5999 goto nla_put_failure;
6000
6001 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6002 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6003 goto nla_put_failure;
6004 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6005 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6006 goto nla_put_failure;
6007 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6008 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6009 survey->channel_time))
6010 goto nla_put_failure;
6011 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6012 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6013 survey->channel_time_busy))
6014 goto nla_put_failure;
6015 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6016 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6017 survey->channel_time_ext_busy))
6018 goto nla_put_failure;
6019 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6020 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6021 survey->channel_time_rx))
6022 goto nla_put_failure;
6023 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6024 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6025 survey->channel_time_tx))
6026 goto nla_put_failure;
6027
6028 nla_nest_end(msg, infoattr);
6029
6030 return genlmsg_end(msg, hdr);
6031
6032 nla_put_failure:
6033 genlmsg_cancel(msg, hdr);
6034 return -EMSGSIZE;
6035 }
6036
6037 static int nl80211_dump_survey(struct sk_buff *skb,
6038 struct netlink_callback *cb)
6039 {
6040 struct survey_info survey;
6041 struct cfg80211_registered_device *dev;
6042 struct wireless_dev *wdev;
6043 int survey_idx = cb->args[2];
6044 int res;
6045
6046 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6047 if (res)
6048 return res;
6049
6050 if (!wdev->netdev) {
6051 res = -EINVAL;
6052 goto out_err;
6053 }
6054
6055 if (!dev->ops->dump_survey) {
6056 res = -EOPNOTSUPP;
6057 goto out_err;
6058 }
6059
6060 while (1) {
6061 struct ieee80211_channel *chan;
6062
6063 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6064 if (res == -ENOENT)
6065 break;
6066 if (res)
6067 goto out_err;
6068
6069 /* Survey without a channel doesn't make sense */
6070 if (!survey.channel) {
6071 res = -EINVAL;
6072 goto out;
6073 }
6074
6075 chan = ieee80211_get_channel(&dev->wiphy,
6076 survey.channel->center_freq);
6077 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6078 survey_idx++;
6079 continue;
6080 }
6081
6082 if (nl80211_send_survey(skb,
6083 NETLINK_CB(cb->skb).portid,
6084 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6085 wdev->netdev, &survey) < 0)
6086 goto out;
6087 survey_idx++;
6088 }
6089
6090 out:
6091 cb->args[2] = survey_idx;
6092 res = skb->len;
6093 out_err:
6094 nl80211_finish_wdev_dump(dev);
6095 return res;
6096 }
6097
6098 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6099 {
6100 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6101 NL80211_WPA_VERSION_2));
6102 }
6103
6104 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6105 {
6106 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6107 struct net_device *dev = info->user_ptr[1];
6108 struct ieee80211_channel *chan;
6109 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6110 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6111 enum nl80211_auth_type auth_type;
6112 struct key_parse key;
6113 bool local_state_change;
6114
6115 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6116 return -EINVAL;
6117
6118 if (!info->attrs[NL80211_ATTR_MAC])
6119 return -EINVAL;
6120
6121 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6122 return -EINVAL;
6123
6124 if (!info->attrs[NL80211_ATTR_SSID])
6125 return -EINVAL;
6126
6127 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6128 return -EINVAL;
6129
6130 err = nl80211_parse_key(info, &key);
6131 if (err)
6132 return err;
6133
6134 if (key.idx >= 0) {
6135 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6136 return -EINVAL;
6137 if (!key.p.key || !key.p.key_len)
6138 return -EINVAL;
6139 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6140 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6141 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6142 key.p.key_len != WLAN_KEY_LEN_WEP104))
6143 return -EINVAL;
6144 if (key.idx > 4)
6145 return -EINVAL;
6146 } else {
6147 key.p.key_len = 0;
6148 key.p.key = NULL;
6149 }
6150
6151 if (key.idx >= 0) {
6152 int i;
6153 bool ok = false;
6154 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6155 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6156 ok = true;
6157 break;
6158 }
6159 }
6160 if (!ok)
6161 return -EINVAL;
6162 }
6163
6164 if (!rdev->ops->auth)
6165 return -EOPNOTSUPP;
6166
6167 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6168 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6169 return -EOPNOTSUPP;
6170
6171 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6172 chan = ieee80211_get_channel(&rdev->wiphy,
6173 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6174 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6175 return -EINVAL;
6176
6177 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6178 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6179
6180 if (info->attrs[NL80211_ATTR_IE]) {
6181 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6182 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6183 }
6184
6185 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6186 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6187 return -EINVAL;
6188
6189 if (auth_type == NL80211_AUTHTYPE_SAE &&
6190 !info->attrs[NL80211_ATTR_SAE_DATA])
6191 return -EINVAL;
6192
6193 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6194 if (auth_type != NL80211_AUTHTYPE_SAE)
6195 return -EINVAL;
6196 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6197 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6198 /* need to include at least Auth Transaction and Status Code */
6199 if (sae_data_len < 4)
6200 return -EINVAL;
6201 }
6202
6203 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6204
6205 /*
6206 * Since we no longer track auth state, ignore
6207 * requests to only change local state.
6208 */
6209 if (local_state_change)
6210 return 0;
6211
6212 wdev_lock(dev->ieee80211_ptr);
6213 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6214 ssid, ssid_len, ie, ie_len,
6215 key.p.key, key.p.key_len, key.idx,
6216 sae_data, sae_data_len);
6217 wdev_unlock(dev->ieee80211_ptr);
6218 return err;
6219 }
6220
6221 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6222 struct genl_info *info,
6223 struct cfg80211_crypto_settings *settings,
6224 int cipher_limit)
6225 {
6226 memset(settings, 0, sizeof(*settings));
6227
6228 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6229
6230 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6231 u16 proto;
6232 proto = nla_get_u16(
6233 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6234 settings->control_port_ethertype = cpu_to_be16(proto);
6235 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6236 proto != ETH_P_PAE)
6237 return -EINVAL;
6238 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6239 settings->control_port_no_encrypt = true;
6240 } else
6241 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6242
6243 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6244 void *data;
6245 int len, i;
6246
6247 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6248 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6249 settings->n_ciphers_pairwise = len / sizeof(u32);
6250
6251 if (len % sizeof(u32))
6252 return -EINVAL;
6253
6254 if (settings->n_ciphers_pairwise > cipher_limit)
6255 return -EINVAL;
6256
6257 memcpy(settings->ciphers_pairwise, data, len);
6258
6259 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6260 if (!cfg80211_supported_cipher_suite(
6261 &rdev->wiphy,
6262 settings->ciphers_pairwise[i]))
6263 return -EINVAL;
6264 }
6265
6266 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6267 settings->cipher_group =
6268 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6269 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6270 settings->cipher_group))
6271 return -EINVAL;
6272 }
6273
6274 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6275 settings->wpa_versions =
6276 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6277 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6278 return -EINVAL;
6279 }
6280
6281 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6282 void *data;
6283 int len;
6284
6285 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6286 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6287 settings->n_akm_suites = len / sizeof(u32);
6288
6289 if (len % sizeof(u32))
6290 return -EINVAL;
6291
6292 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6293 return -EINVAL;
6294
6295 memcpy(settings->akm_suites, data, len);
6296 }
6297
6298 return 0;
6299 }
6300
6301 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6302 {
6303 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6304 struct net_device *dev = info->user_ptr[1];
6305 struct ieee80211_channel *chan;
6306 struct cfg80211_assoc_request req = {};
6307 const u8 *bssid, *ssid;
6308 int err, ssid_len = 0;
6309
6310 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6311 return -EINVAL;
6312
6313 if (!info->attrs[NL80211_ATTR_MAC] ||
6314 !info->attrs[NL80211_ATTR_SSID] ||
6315 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6316 return -EINVAL;
6317
6318 if (!rdev->ops->assoc)
6319 return -EOPNOTSUPP;
6320
6321 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6322 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6323 return -EOPNOTSUPP;
6324
6325 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6326
6327 chan = ieee80211_get_channel(&rdev->wiphy,
6328 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6329 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6330 return -EINVAL;
6331
6332 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6333 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6334
6335 if (info->attrs[NL80211_ATTR_IE]) {
6336 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6337 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6338 }
6339
6340 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6341 enum nl80211_mfp mfp =
6342 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6343 if (mfp == NL80211_MFP_REQUIRED)
6344 req.use_mfp = true;
6345 else if (mfp != NL80211_MFP_NO)
6346 return -EINVAL;
6347 }
6348
6349 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6350 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6351
6352 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6353 req.flags |= ASSOC_REQ_DISABLE_HT;
6354
6355 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6356 memcpy(&req.ht_capa_mask,
6357 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6358 sizeof(req.ht_capa_mask));
6359
6360 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6361 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6362 return -EINVAL;
6363 memcpy(&req.ht_capa,
6364 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6365 sizeof(req.ht_capa));
6366 }
6367
6368 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6369 req.flags |= ASSOC_REQ_DISABLE_VHT;
6370
6371 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6372 memcpy(&req.vht_capa_mask,
6373 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6374 sizeof(req.vht_capa_mask));
6375
6376 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6377 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6378 return -EINVAL;
6379 memcpy(&req.vht_capa,
6380 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6381 sizeof(req.vht_capa));
6382 }
6383
6384 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6385 if (!err) {
6386 wdev_lock(dev->ieee80211_ptr);
6387 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6388 ssid, ssid_len, &req);
6389 wdev_unlock(dev->ieee80211_ptr);
6390 }
6391
6392 return err;
6393 }
6394
6395 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6396 {
6397 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6398 struct net_device *dev = info->user_ptr[1];
6399 const u8 *ie = NULL, *bssid;
6400 int ie_len = 0, err;
6401 u16 reason_code;
6402 bool local_state_change;
6403
6404 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6405 return -EINVAL;
6406
6407 if (!info->attrs[NL80211_ATTR_MAC])
6408 return -EINVAL;
6409
6410 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6411 return -EINVAL;
6412
6413 if (!rdev->ops->deauth)
6414 return -EOPNOTSUPP;
6415
6416 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6417 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6418 return -EOPNOTSUPP;
6419
6420 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6421
6422 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6423 if (reason_code == 0) {
6424 /* Reason Code 0 is reserved */
6425 return -EINVAL;
6426 }
6427
6428 if (info->attrs[NL80211_ATTR_IE]) {
6429 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6430 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6431 }
6432
6433 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6434
6435 wdev_lock(dev->ieee80211_ptr);
6436 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6437 local_state_change);
6438 wdev_unlock(dev->ieee80211_ptr);
6439 return err;
6440 }
6441
6442 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6443 {
6444 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6445 struct net_device *dev = info->user_ptr[1];
6446 const u8 *ie = NULL, *bssid;
6447 int ie_len = 0, err;
6448 u16 reason_code;
6449 bool local_state_change;
6450
6451 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6452 return -EINVAL;
6453
6454 if (!info->attrs[NL80211_ATTR_MAC])
6455 return -EINVAL;
6456
6457 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6458 return -EINVAL;
6459
6460 if (!rdev->ops->disassoc)
6461 return -EOPNOTSUPP;
6462
6463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6465 return -EOPNOTSUPP;
6466
6467 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6468
6469 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6470 if (reason_code == 0) {
6471 /* Reason Code 0 is reserved */
6472 return -EINVAL;
6473 }
6474
6475 if (info->attrs[NL80211_ATTR_IE]) {
6476 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6477 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6478 }
6479
6480 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6481
6482 wdev_lock(dev->ieee80211_ptr);
6483 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6484 local_state_change);
6485 wdev_unlock(dev->ieee80211_ptr);
6486 return err;
6487 }
6488
6489 static bool
6490 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6491 int mcast_rate[IEEE80211_NUM_BANDS],
6492 int rateval)
6493 {
6494 struct wiphy *wiphy = &rdev->wiphy;
6495 bool found = false;
6496 int band, i;
6497
6498 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6499 struct ieee80211_supported_band *sband;
6500
6501 sband = wiphy->bands[band];
6502 if (!sband)
6503 continue;
6504
6505 for (i = 0; i < sband->n_bitrates; i++) {
6506 if (sband->bitrates[i].bitrate == rateval) {
6507 mcast_rate[band] = i + 1;
6508 found = true;
6509 break;
6510 }
6511 }
6512 }
6513
6514 return found;
6515 }
6516
6517 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6518 {
6519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6520 struct net_device *dev = info->user_ptr[1];
6521 struct cfg80211_ibss_params ibss;
6522 struct wiphy *wiphy;
6523 struct cfg80211_cached_keys *connkeys = NULL;
6524 int err;
6525
6526 memset(&ibss, 0, sizeof(ibss));
6527
6528 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6529 return -EINVAL;
6530
6531 if (!info->attrs[NL80211_ATTR_SSID] ||
6532 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6533 return -EINVAL;
6534
6535 ibss.beacon_interval = 100;
6536
6537 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6538 ibss.beacon_interval =
6539 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6540 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6541 return -EINVAL;
6542 }
6543
6544 if (!rdev->ops->join_ibss)
6545 return -EOPNOTSUPP;
6546
6547 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6548 return -EOPNOTSUPP;
6549
6550 wiphy = &rdev->wiphy;
6551
6552 if (info->attrs[NL80211_ATTR_MAC]) {
6553 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6554
6555 if (!is_valid_ether_addr(ibss.bssid))
6556 return -EINVAL;
6557 }
6558 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6559 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6560
6561 if (info->attrs[NL80211_ATTR_IE]) {
6562 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6563 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6564 }
6565
6566 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6567 if (err)
6568 return err;
6569
6570 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6571 return -EINVAL;
6572
6573 switch (ibss.chandef.width) {
6574 case NL80211_CHAN_WIDTH_5:
6575 case NL80211_CHAN_WIDTH_10:
6576 case NL80211_CHAN_WIDTH_20_NOHT:
6577 break;
6578 case NL80211_CHAN_WIDTH_20:
6579 case NL80211_CHAN_WIDTH_40:
6580 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6581 break;
6582 default:
6583 return -EINVAL;
6584 }
6585
6586 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6587 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6588
6589 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6590 u8 *rates =
6591 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6592 int n_rates =
6593 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6594 struct ieee80211_supported_band *sband =
6595 wiphy->bands[ibss.chandef.chan->band];
6596
6597 err = ieee80211_get_ratemask(sband, rates, n_rates,
6598 &ibss.basic_rates);
6599 if (err)
6600 return err;
6601 }
6602
6603 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6604 memcpy(&ibss.ht_capa_mask,
6605 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6606 sizeof(ibss.ht_capa_mask));
6607
6608 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6609 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6610 return -EINVAL;
6611 memcpy(&ibss.ht_capa,
6612 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6613 sizeof(ibss.ht_capa));
6614 }
6615
6616 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6617 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6618 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6619 return -EINVAL;
6620
6621 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6622 bool no_ht = false;
6623
6624 connkeys = nl80211_parse_connkeys(rdev,
6625 info->attrs[NL80211_ATTR_KEYS],
6626 &no_ht);
6627 if (IS_ERR(connkeys))
6628 return PTR_ERR(connkeys);
6629
6630 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6631 no_ht) {
6632 kfree(connkeys);
6633 return -EINVAL;
6634 }
6635 }
6636
6637 ibss.control_port =
6638 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6639
6640 ibss.userspace_handles_dfs =
6641 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6642
6643 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6644 if (err)
6645 kfree(connkeys);
6646 return err;
6647 }
6648
6649 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6650 {
6651 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6652 struct net_device *dev = info->user_ptr[1];
6653
6654 if (!rdev->ops->leave_ibss)
6655 return -EOPNOTSUPP;
6656
6657 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6658 return -EOPNOTSUPP;
6659
6660 return cfg80211_leave_ibss(rdev, dev, false);
6661 }
6662
6663 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6664 {
6665 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6666 struct net_device *dev = info->user_ptr[1];
6667 int mcast_rate[IEEE80211_NUM_BANDS];
6668 u32 nla_rate;
6669 int err;
6670
6671 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6672 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6673 return -EOPNOTSUPP;
6674
6675 if (!rdev->ops->set_mcast_rate)
6676 return -EOPNOTSUPP;
6677
6678 memset(mcast_rate, 0, sizeof(mcast_rate));
6679
6680 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6681 return -EINVAL;
6682
6683 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6684 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6685 return -EINVAL;
6686
6687 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6688
6689 return err;
6690 }
6691
6692
6693 #ifdef CONFIG_NL80211_TESTMODE
6694 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6695 {
6696 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6697 struct wireless_dev *wdev =
6698 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6699 int err;
6700
6701 if (!rdev->ops->testmode_cmd)
6702 return -EOPNOTSUPP;
6703
6704 if (IS_ERR(wdev)) {
6705 err = PTR_ERR(wdev);
6706 if (err != -EINVAL)
6707 return err;
6708 wdev = NULL;
6709 } else if (wdev->wiphy != &rdev->wiphy) {
6710 return -EINVAL;
6711 }
6712
6713 if (!info->attrs[NL80211_ATTR_TESTDATA])
6714 return -EINVAL;
6715
6716 rdev->testmode_info = info;
6717 err = rdev_testmode_cmd(rdev, wdev,
6718 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6719 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6720 rdev->testmode_info = NULL;
6721
6722 return err;
6723 }
6724
6725 static int nl80211_testmode_dump(struct sk_buff *skb,
6726 struct netlink_callback *cb)
6727 {
6728 struct cfg80211_registered_device *rdev;
6729 int err;
6730 long phy_idx;
6731 void *data = NULL;
6732 int data_len = 0;
6733
6734 rtnl_lock();
6735
6736 if (cb->args[0]) {
6737 /*
6738 * 0 is a valid index, but not valid for args[0],
6739 * so we need to offset by 1.
6740 */
6741 phy_idx = cb->args[0] - 1;
6742 } else {
6743 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6744 nl80211_fam.attrbuf, nl80211_fam.maxattr,
6745 nl80211_policy);
6746 if (err)
6747 goto out_err;
6748
6749 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6750 nl80211_fam.attrbuf);
6751 if (IS_ERR(rdev)) {
6752 err = PTR_ERR(rdev);
6753 goto out_err;
6754 }
6755 phy_idx = rdev->wiphy_idx;
6756 rdev = NULL;
6757
6758 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6759 cb->args[1] =
6760 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6761 }
6762
6763 if (cb->args[1]) {
6764 data = nla_data((void *)cb->args[1]);
6765 data_len = nla_len((void *)cb->args[1]);
6766 }
6767
6768 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6769 if (!rdev) {
6770 err = -ENOENT;
6771 goto out_err;
6772 }
6773
6774 if (!rdev->ops->testmode_dump) {
6775 err = -EOPNOTSUPP;
6776 goto out_err;
6777 }
6778
6779 while (1) {
6780 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6781 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6782 NL80211_CMD_TESTMODE);
6783 struct nlattr *tmdata;
6784
6785 if (!hdr)
6786 break;
6787
6788 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6789 genlmsg_cancel(skb, hdr);
6790 break;
6791 }
6792
6793 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6794 if (!tmdata) {
6795 genlmsg_cancel(skb, hdr);
6796 break;
6797 }
6798 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6799 nla_nest_end(skb, tmdata);
6800
6801 if (err == -ENOBUFS || err == -ENOENT) {
6802 genlmsg_cancel(skb, hdr);
6803 break;
6804 } else if (err) {
6805 genlmsg_cancel(skb, hdr);
6806 goto out_err;
6807 }
6808
6809 genlmsg_end(skb, hdr);
6810 }
6811
6812 err = skb->len;
6813 /* see above */
6814 cb->args[0] = phy_idx + 1;
6815 out_err:
6816 rtnl_unlock();
6817 return err;
6818 }
6819
6820 static struct sk_buff *
6821 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6822 int approxlen, u32 portid, u32 seq, gfp_t gfp)
6823 {
6824 struct sk_buff *skb;
6825 void *hdr;
6826 struct nlattr *data;
6827
6828 skb = nlmsg_new(approxlen + 100, gfp);
6829 if (!skb)
6830 return NULL;
6831
6832 hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6833 if (!hdr) {
6834 kfree_skb(skb);
6835 return NULL;
6836 }
6837
6838 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6839 goto nla_put_failure;
6840 data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6841
6842 ((void **)skb->cb)[0] = rdev;
6843 ((void **)skb->cb)[1] = hdr;
6844 ((void **)skb->cb)[2] = data;
6845
6846 return skb;
6847
6848 nla_put_failure:
6849 kfree_skb(skb);
6850 return NULL;
6851 }
6852
6853 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6854 int approxlen)
6855 {
6856 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6857
6858 if (WARN_ON(!rdev->testmode_info))
6859 return NULL;
6860
6861 return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6862 rdev->testmode_info->snd_portid,
6863 rdev->testmode_info->snd_seq,
6864 GFP_KERNEL);
6865 }
6866 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6867
6868 int cfg80211_testmode_reply(struct sk_buff *skb)
6869 {
6870 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6871 void *hdr = ((void **)skb->cb)[1];
6872 struct nlattr *data = ((void **)skb->cb)[2];
6873
6874 if (WARN_ON(!rdev->testmode_info)) {
6875 kfree_skb(skb);
6876 return -EINVAL;
6877 }
6878
6879 nla_nest_end(skb, data);
6880 genlmsg_end(skb, hdr);
6881 return genlmsg_reply(skb, rdev->testmode_info);
6882 }
6883 EXPORT_SYMBOL(cfg80211_testmode_reply);
6884
6885 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6886 int approxlen, gfp_t gfp)
6887 {
6888 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6889
6890 return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6891 }
6892 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6893
6894 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6895 {
6896 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6897 void *hdr = ((void **)skb->cb)[1];
6898 struct nlattr *data = ((void **)skb->cb)[2];
6899
6900 nla_nest_end(skb, data);
6901 genlmsg_end(skb, hdr);
6902 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6903 NL80211_MCGRP_TESTMODE, gfp);
6904 }
6905 EXPORT_SYMBOL(cfg80211_testmode_event);
6906 #endif
6907
6908 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6909 {
6910 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6911 struct net_device *dev = info->user_ptr[1];
6912 struct cfg80211_connect_params connect;
6913 struct wiphy *wiphy;
6914 struct cfg80211_cached_keys *connkeys = NULL;
6915 int err;
6916
6917 memset(&connect, 0, sizeof(connect));
6918
6919 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6920 return -EINVAL;
6921
6922 if (!info->attrs[NL80211_ATTR_SSID] ||
6923 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6924 return -EINVAL;
6925
6926 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6927 connect.auth_type =
6928 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6929 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6930 NL80211_CMD_CONNECT))
6931 return -EINVAL;
6932 } else
6933 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6934
6935 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6936
6937 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6938 NL80211_MAX_NR_CIPHER_SUITES);
6939 if (err)
6940 return err;
6941
6942 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6943 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6944 return -EOPNOTSUPP;
6945
6946 wiphy = &rdev->wiphy;
6947
6948 connect.bg_scan_period = -1;
6949 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6950 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6951 connect.bg_scan_period =
6952 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6953 }
6954
6955 if (info->attrs[NL80211_ATTR_MAC])
6956 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6957 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6958 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6959
6960 if (info->attrs[NL80211_ATTR_IE]) {
6961 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6962 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6963 }
6964
6965 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6966 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6967 if (connect.mfp != NL80211_MFP_REQUIRED &&
6968 connect.mfp != NL80211_MFP_NO)
6969 return -EINVAL;
6970 } else {
6971 connect.mfp = NL80211_MFP_NO;
6972 }
6973
6974 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6975 connect.channel =
6976 ieee80211_get_channel(wiphy,
6977 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6978 if (!connect.channel ||
6979 connect.channel->flags & IEEE80211_CHAN_DISABLED)
6980 return -EINVAL;
6981 }
6982
6983 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6984 connkeys = nl80211_parse_connkeys(rdev,
6985 info->attrs[NL80211_ATTR_KEYS], NULL);
6986 if (IS_ERR(connkeys))
6987 return PTR_ERR(connkeys);
6988 }
6989
6990 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6991 connect.flags |= ASSOC_REQ_DISABLE_HT;
6992
6993 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6994 memcpy(&connect.ht_capa_mask,
6995 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6996 sizeof(connect.ht_capa_mask));
6997
6998 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6999 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7000 kfree(connkeys);
7001 return -EINVAL;
7002 }
7003 memcpy(&connect.ht_capa,
7004 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7005 sizeof(connect.ht_capa));
7006 }
7007
7008 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7009 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7010
7011 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7012 memcpy(&connect.vht_capa_mask,
7013 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7014 sizeof(connect.vht_capa_mask));
7015
7016 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7017 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7018 kfree(connkeys);
7019 return -EINVAL;
7020 }
7021 memcpy(&connect.vht_capa,
7022 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7023 sizeof(connect.vht_capa));
7024 }
7025
7026 wdev_lock(dev->ieee80211_ptr);
7027 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7028 wdev_unlock(dev->ieee80211_ptr);
7029 if (err)
7030 kfree(connkeys);
7031 return err;
7032 }
7033
7034 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7035 {
7036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7037 struct net_device *dev = info->user_ptr[1];
7038 u16 reason;
7039 int ret;
7040
7041 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7042 reason = WLAN_REASON_DEAUTH_LEAVING;
7043 else
7044 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7045
7046 if (reason == 0)
7047 return -EINVAL;
7048
7049 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7050 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7051 return -EOPNOTSUPP;
7052
7053 wdev_lock(dev->ieee80211_ptr);
7054 ret = cfg80211_disconnect(rdev, dev, reason, true);
7055 wdev_unlock(dev->ieee80211_ptr);
7056 return ret;
7057 }
7058
7059 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7060 {
7061 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7062 struct net *net;
7063 int err;
7064 u32 pid;
7065
7066 if (!info->attrs[NL80211_ATTR_PID])
7067 return -EINVAL;
7068
7069 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7070
7071 net = get_net_ns_by_pid(pid);
7072 if (IS_ERR(net))
7073 return PTR_ERR(net);
7074
7075 err = 0;
7076
7077 /* check if anything to do */
7078 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7079 err = cfg80211_switch_netns(rdev, net);
7080
7081 put_net(net);
7082 return err;
7083 }
7084
7085 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7086 {
7087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7088 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7089 struct cfg80211_pmksa *pmksa) = NULL;
7090 struct net_device *dev = info->user_ptr[1];
7091 struct cfg80211_pmksa pmksa;
7092
7093 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7094
7095 if (!info->attrs[NL80211_ATTR_MAC])
7096 return -EINVAL;
7097
7098 if (!info->attrs[NL80211_ATTR_PMKID])
7099 return -EINVAL;
7100
7101 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7102 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7103
7104 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7105 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7106 return -EOPNOTSUPP;
7107
7108 switch (info->genlhdr->cmd) {
7109 case NL80211_CMD_SET_PMKSA:
7110 rdev_ops = rdev->ops->set_pmksa;
7111 break;
7112 case NL80211_CMD_DEL_PMKSA:
7113 rdev_ops = rdev->ops->del_pmksa;
7114 break;
7115 default:
7116 WARN_ON(1);
7117 break;
7118 }
7119
7120 if (!rdev_ops)
7121 return -EOPNOTSUPP;
7122
7123 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7124 }
7125
7126 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7127 {
7128 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7129 struct net_device *dev = info->user_ptr[1];
7130
7131 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7132 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7133 return -EOPNOTSUPP;
7134
7135 if (!rdev->ops->flush_pmksa)
7136 return -EOPNOTSUPP;
7137
7138 return rdev_flush_pmksa(rdev, dev);
7139 }
7140
7141 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7142 {
7143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7144 struct net_device *dev = info->user_ptr[1];
7145 u8 action_code, dialog_token;
7146 u16 status_code;
7147 u8 *peer;
7148
7149 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7150 !rdev->ops->tdls_mgmt)
7151 return -EOPNOTSUPP;
7152
7153 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7154 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7155 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7156 !info->attrs[NL80211_ATTR_IE] ||
7157 !info->attrs[NL80211_ATTR_MAC])
7158 return -EINVAL;
7159
7160 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7161 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7162 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7163 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7164
7165 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7166 dialog_token, status_code,
7167 nla_data(info->attrs[NL80211_ATTR_IE]),
7168 nla_len(info->attrs[NL80211_ATTR_IE]));
7169 }
7170
7171 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7172 {
7173 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7174 struct net_device *dev = info->user_ptr[1];
7175 enum nl80211_tdls_operation operation;
7176 u8 *peer;
7177
7178 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7179 !rdev->ops->tdls_oper)
7180 return -EOPNOTSUPP;
7181
7182 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7183 !info->attrs[NL80211_ATTR_MAC])
7184 return -EINVAL;
7185
7186 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7187 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7188
7189 return rdev_tdls_oper(rdev, dev, peer, operation);
7190 }
7191
7192 static int nl80211_remain_on_channel(struct sk_buff *skb,
7193 struct genl_info *info)
7194 {
7195 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7196 struct wireless_dev *wdev = info->user_ptr[1];
7197 struct cfg80211_chan_def chandef;
7198 struct sk_buff *msg;
7199 void *hdr;
7200 u64 cookie;
7201 u32 duration;
7202 int err;
7203
7204 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7205 !info->attrs[NL80211_ATTR_DURATION])
7206 return -EINVAL;
7207
7208 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7209
7210 if (!rdev->ops->remain_on_channel ||
7211 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7212 return -EOPNOTSUPP;
7213
7214 /*
7215 * We should be on that channel for at least a minimum amount of
7216 * time (10ms) but no longer than the driver supports.
7217 */
7218 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7219 duration > rdev->wiphy.max_remain_on_channel_duration)
7220 return -EINVAL;
7221
7222 err = nl80211_parse_chandef(rdev, info, &chandef);
7223 if (err)
7224 return err;
7225
7226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7227 if (!msg)
7228 return -ENOMEM;
7229
7230 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7231 NL80211_CMD_REMAIN_ON_CHANNEL);
7232 if (!hdr) {
7233 err = -ENOBUFS;
7234 goto free_msg;
7235 }
7236
7237 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7238 duration, &cookie);
7239
7240 if (err)
7241 goto free_msg;
7242
7243 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7244 goto nla_put_failure;
7245
7246 genlmsg_end(msg, hdr);
7247
7248 return genlmsg_reply(msg, info);
7249
7250 nla_put_failure:
7251 err = -ENOBUFS;
7252 free_msg:
7253 nlmsg_free(msg);
7254 return err;
7255 }
7256
7257 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7258 struct genl_info *info)
7259 {
7260 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7261 struct wireless_dev *wdev = info->user_ptr[1];
7262 u64 cookie;
7263
7264 if (!info->attrs[NL80211_ATTR_COOKIE])
7265 return -EINVAL;
7266
7267 if (!rdev->ops->cancel_remain_on_channel)
7268 return -EOPNOTSUPP;
7269
7270 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7271
7272 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7273 }
7274
7275 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7276 u8 *rates, u8 rates_len)
7277 {
7278 u8 i;
7279 u32 mask = 0;
7280
7281 for (i = 0; i < rates_len; i++) {
7282 int rate = (rates[i] & 0x7f) * 5;
7283 int ridx;
7284 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7285 struct ieee80211_rate *srate =
7286 &sband->bitrates[ridx];
7287 if (rate == srate->bitrate) {
7288 mask |= 1 << ridx;
7289 break;
7290 }
7291 }
7292 if (ridx == sband->n_bitrates)
7293 return 0; /* rate not found */
7294 }
7295
7296 return mask;
7297 }
7298
7299 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7300 u8 *rates, u8 rates_len,
7301 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7302 {
7303 u8 i;
7304
7305 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7306
7307 for (i = 0; i < rates_len; i++) {
7308 int ridx, rbit;
7309
7310 ridx = rates[i] / 8;
7311 rbit = BIT(rates[i] % 8);
7312
7313 /* check validity */
7314 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7315 return false;
7316
7317 /* check availability */
7318 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7319 mcs[ridx] |= rbit;
7320 else
7321 return false;
7322 }
7323
7324 return true;
7325 }
7326
7327 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7328 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7329 .len = NL80211_MAX_SUPP_RATES },
7330 [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7331 .len = NL80211_MAX_SUPP_HT_RATES },
7332 };
7333
7334 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7335 struct genl_info *info)
7336 {
7337 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7338 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7339 struct cfg80211_bitrate_mask mask;
7340 int rem, i;
7341 struct net_device *dev = info->user_ptr[1];
7342 struct nlattr *tx_rates;
7343 struct ieee80211_supported_band *sband;
7344
7345 if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7346 return -EINVAL;
7347
7348 if (!rdev->ops->set_bitrate_mask)
7349 return -EOPNOTSUPP;
7350
7351 memset(&mask, 0, sizeof(mask));
7352 /* Default to all rates enabled */
7353 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7354 sband = rdev->wiphy.bands[i];
7355 mask.control[i].legacy =
7356 sband ? (1 << sband->n_bitrates) - 1 : 0;
7357 if (sband)
7358 memcpy(mask.control[i].mcs,
7359 sband->ht_cap.mcs.rx_mask,
7360 sizeof(mask.control[i].mcs));
7361 else
7362 memset(mask.control[i].mcs, 0,
7363 sizeof(mask.control[i].mcs));
7364 }
7365
7366 /*
7367 * The nested attribute uses enum nl80211_band as the index. This maps
7368 * directly to the enum ieee80211_band values used in cfg80211.
7369 */
7370 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7371 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7372 {
7373 enum ieee80211_band band = nla_type(tx_rates);
7374 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7375 return -EINVAL;
7376 sband = rdev->wiphy.bands[band];
7377 if (sband == NULL)
7378 return -EINVAL;
7379 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7380 nla_len(tx_rates), nl80211_txattr_policy);
7381 if (tb[NL80211_TXRATE_LEGACY]) {
7382 mask.control[band].legacy = rateset_to_mask(
7383 sband,
7384 nla_data(tb[NL80211_TXRATE_LEGACY]),
7385 nla_len(tb[NL80211_TXRATE_LEGACY]));
7386 if ((mask.control[band].legacy == 0) &&
7387 nla_len(tb[NL80211_TXRATE_LEGACY]))
7388 return -EINVAL;
7389 }
7390 if (tb[NL80211_TXRATE_MCS]) {
7391 if (!ht_rateset_to_mask(
7392 sband,
7393 nla_data(tb[NL80211_TXRATE_MCS]),
7394 nla_len(tb[NL80211_TXRATE_MCS]),
7395 mask.control[band].mcs))
7396 return -EINVAL;
7397 }
7398
7399 if (mask.control[band].legacy == 0) {
7400 /* don't allow empty legacy rates if HT
7401 * is not even supported. */
7402 if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7403 return -EINVAL;
7404
7405 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7406 if (mask.control[band].mcs[i])
7407 break;
7408
7409 /* legacy and mcs rates may not be both empty */
7410 if (i == IEEE80211_HT_MCS_MASK_LEN)
7411 return -EINVAL;
7412 }
7413 }
7414
7415 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7416 }
7417
7418 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7419 {
7420 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7421 struct wireless_dev *wdev = info->user_ptr[1];
7422 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7423
7424 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7425 return -EINVAL;
7426
7427 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7428 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7429
7430 switch (wdev->iftype) {
7431 case NL80211_IFTYPE_STATION:
7432 case NL80211_IFTYPE_ADHOC:
7433 case NL80211_IFTYPE_P2P_CLIENT:
7434 case NL80211_IFTYPE_AP:
7435 case NL80211_IFTYPE_AP_VLAN:
7436 case NL80211_IFTYPE_MESH_POINT:
7437 case NL80211_IFTYPE_P2P_GO:
7438 case NL80211_IFTYPE_P2P_DEVICE:
7439 break;
7440 default:
7441 return -EOPNOTSUPP;
7442 }
7443
7444 /* not much point in registering if we can't reply */
7445 if (!rdev->ops->mgmt_tx)
7446 return -EOPNOTSUPP;
7447
7448 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7449 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7450 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7451 }
7452
7453 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7454 {
7455 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7456 struct wireless_dev *wdev = info->user_ptr[1];
7457 struct cfg80211_chan_def chandef;
7458 int err;
7459 void *hdr = NULL;
7460 u64 cookie;
7461 struct sk_buff *msg = NULL;
7462 struct cfg80211_mgmt_tx_params params = {
7463 .dont_wait_for_ack =
7464 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7465 };
7466
7467 if (!info->attrs[NL80211_ATTR_FRAME])
7468 return -EINVAL;
7469
7470 if (!rdev->ops->mgmt_tx)
7471 return -EOPNOTSUPP;
7472
7473 switch (wdev->iftype) {
7474 case NL80211_IFTYPE_P2P_DEVICE:
7475 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7476 return -EINVAL;
7477 case NL80211_IFTYPE_STATION:
7478 case NL80211_IFTYPE_ADHOC:
7479 case NL80211_IFTYPE_P2P_CLIENT:
7480 case NL80211_IFTYPE_AP:
7481 case NL80211_IFTYPE_AP_VLAN:
7482 case NL80211_IFTYPE_MESH_POINT:
7483 case NL80211_IFTYPE_P2P_GO:
7484 break;
7485 default:
7486 return -EOPNOTSUPP;
7487 }
7488
7489 if (info->attrs[NL80211_ATTR_DURATION]) {
7490 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7491 return -EINVAL;
7492 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7493
7494 /*
7495 * We should wait on the channel for at least a minimum amount
7496 * of time (10ms) but no longer than the driver supports.
7497 */
7498 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7499 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7500 return -EINVAL;
7501
7502 }
7503
7504 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7505
7506 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7507 return -EINVAL;
7508
7509 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7510
7511 /* get the channel if any has been specified, otherwise pass NULL to
7512 * the driver. The latter will use the current one
7513 */
7514 chandef.chan = NULL;
7515 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7516 err = nl80211_parse_chandef(rdev, info, &chandef);
7517 if (err)
7518 return err;
7519 }
7520
7521 if (!chandef.chan && params.offchan)
7522 return -EINVAL;
7523
7524 if (!params.dont_wait_for_ack) {
7525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7526 if (!msg)
7527 return -ENOMEM;
7528
7529 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7530 NL80211_CMD_FRAME);
7531 if (!hdr) {
7532 err = -ENOBUFS;
7533 goto free_msg;
7534 }
7535 }
7536
7537 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7538 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7539 params.chan = chandef.chan;
7540 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7541 if (err)
7542 goto free_msg;
7543
7544 if (msg) {
7545 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7546 goto nla_put_failure;
7547
7548 genlmsg_end(msg, hdr);
7549 return genlmsg_reply(msg, info);
7550 }
7551
7552 return 0;
7553
7554 nla_put_failure:
7555 err = -ENOBUFS;
7556 free_msg:
7557 nlmsg_free(msg);
7558 return err;
7559 }
7560
7561 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7562 {
7563 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7564 struct wireless_dev *wdev = info->user_ptr[1];
7565 u64 cookie;
7566
7567 if (!info->attrs[NL80211_ATTR_COOKIE])
7568 return -EINVAL;
7569
7570 if (!rdev->ops->mgmt_tx_cancel_wait)
7571 return -EOPNOTSUPP;
7572
7573 switch (wdev->iftype) {
7574 case NL80211_IFTYPE_STATION:
7575 case NL80211_IFTYPE_ADHOC:
7576 case NL80211_IFTYPE_P2P_CLIENT:
7577 case NL80211_IFTYPE_AP:
7578 case NL80211_IFTYPE_AP_VLAN:
7579 case NL80211_IFTYPE_P2P_GO:
7580 case NL80211_IFTYPE_P2P_DEVICE:
7581 break;
7582 default:
7583 return -EOPNOTSUPP;
7584 }
7585
7586 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7587
7588 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7589 }
7590
7591 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7592 {
7593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7594 struct wireless_dev *wdev;
7595 struct net_device *dev = info->user_ptr[1];
7596 u8 ps_state;
7597 bool state;
7598 int err;
7599
7600 if (!info->attrs[NL80211_ATTR_PS_STATE])
7601 return -EINVAL;
7602
7603 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7604
7605 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7606 return -EINVAL;
7607
7608 wdev = dev->ieee80211_ptr;
7609
7610 if (!rdev->ops->set_power_mgmt)
7611 return -EOPNOTSUPP;
7612
7613 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7614
7615 if (state == wdev->ps)
7616 return 0;
7617
7618 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7619 if (!err)
7620 wdev->ps = state;
7621 return err;
7622 }
7623
7624 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7625 {
7626 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7627 enum nl80211_ps_state ps_state;
7628 struct wireless_dev *wdev;
7629 struct net_device *dev = info->user_ptr[1];
7630 struct sk_buff *msg;
7631 void *hdr;
7632 int err;
7633
7634 wdev = dev->ieee80211_ptr;
7635
7636 if (!rdev->ops->set_power_mgmt)
7637 return -EOPNOTSUPP;
7638
7639 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7640 if (!msg)
7641 return -ENOMEM;
7642
7643 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7644 NL80211_CMD_GET_POWER_SAVE);
7645 if (!hdr) {
7646 err = -ENOBUFS;
7647 goto free_msg;
7648 }
7649
7650 if (wdev->ps)
7651 ps_state = NL80211_PS_ENABLED;
7652 else
7653 ps_state = NL80211_PS_DISABLED;
7654
7655 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7656 goto nla_put_failure;
7657
7658 genlmsg_end(msg, hdr);
7659 return genlmsg_reply(msg, info);
7660
7661 nla_put_failure:
7662 err = -ENOBUFS;
7663 free_msg:
7664 nlmsg_free(msg);
7665 return err;
7666 }
7667
7668 static struct nla_policy
7669 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7670 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7671 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7672 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7673 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7674 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7675 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7676 };
7677
7678 static int nl80211_set_cqm_txe(struct genl_info *info,
7679 u32 rate, u32 pkts, u32 intvl)
7680 {
7681 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7682 struct net_device *dev = info->user_ptr[1];
7683 struct wireless_dev *wdev = dev->ieee80211_ptr;
7684
7685 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7686 return -EINVAL;
7687
7688 if (!rdev->ops->set_cqm_txe_config)
7689 return -EOPNOTSUPP;
7690
7691 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7692 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7693 return -EOPNOTSUPP;
7694
7695 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7696 }
7697
7698 static int nl80211_set_cqm_rssi(struct genl_info *info,
7699 s32 threshold, u32 hysteresis)
7700 {
7701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7702 struct net_device *dev = info->user_ptr[1];
7703 struct wireless_dev *wdev = dev->ieee80211_ptr;
7704
7705 if (threshold > 0)
7706 return -EINVAL;
7707
7708 /* disabling - hysteresis should also be zero then */
7709 if (threshold == 0)
7710 hysteresis = 0;
7711
7712 if (!rdev->ops->set_cqm_rssi_config)
7713 return -EOPNOTSUPP;
7714
7715 if (wdev->iftype != NL80211_IFTYPE_STATION &&
7716 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7717 return -EOPNOTSUPP;
7718
7719 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7720 }
7721
7722 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7723 {
7724 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7725 struct nlattr *cqm;
7726 int err;
7727
7728 cqm = info->attrs[NL80211_ATTR_CQM];
7729 if (!cqm)
7730 return -EINVAL;
7731
7732 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7733 nl80211_attr_cqm_policy);
7734 if (err)
7735 return err;
7736
7737 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7738 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7739 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7740 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7741
7742 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7743 }
7744
7745 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7746 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7747 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7748 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7749 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7750 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7751
7752 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7753 }
7754
7755 return -EINVAL;
7756 }
7757
7758 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7759 {
7760 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7761 struct net_device *dev = info->user_ptr[1];
7762 struct mesh_config cfg;
7763 struct mesh_setup setup;
7764 int err;
7765
7766 /* start with default */
7767 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7768 memcpy(&setup, &default_mesh_setup, sizeof(setup));
7769
7770 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7771 /* and parse parameters if given */
7772 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7773 if (err)
7774 return err;
7775 }
7776
7777 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7778 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7779 return -EINVAL;
7780
7781 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7782 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7783
7784 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7785 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7786 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7787 return -EINVAL;
7788
7789 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7790 setup.beacon_interval =
7791 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7792 if (setup.beacon_interval < 10 ||
7793 setup.beacon_interval > 10000)
7794 return -EINVAL;
7795 }
7796
7797 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7798 setup.dtim_period =
7799 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7800 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7801 return -EINVAL;
7802 }
7803
7804 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7805 /* parse additional setup parameters if given */
7806 err = nl80211_parse_mesh_setup(info, &setup);
7807 if (err)
7808 return err;
7809 }
7810
7811 if (setup.user_mpm)
7812 cfg.auto_open_plinks = false;
7813
7814 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7815 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7816 if (err)
7817 return err;
7818 } else {
7819 /* cfg80211_join_mesh() will sort it out */
7820 setup.chandef.chan = NULL;
7821 }
7822
7823 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7824 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7825 int n_rates =
7826 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7827 struct ieee80211_supported_band *sband;
7828
7829 if (!setup.chandef.chan)
7830 return -EINVAL;
7831
7832 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7833
7834 err = ieee80211_get_ratemask(sband, rates, n_rates,
7835 &setup.basic_rates);
7836 if (err)
7837 return err;
7838 }
7839
7840 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7841 }
7842
7843 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7844 {
7845 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7846 struct net_device *dev = info->user_ptr[1];
7847
7848 return cfg80211_leave_mesh(rdev, dev);
7849 }
7850
7851 #ifdef CONFIG_PM
7852 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7853 struct cfg80211_registered_device *rdev)
7854 {
7855 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7856 struct nlattr *nl_pats, *nl_pat;
7857 int i, pat_len;
7858
7859 if (!wowlan->n_patterns)
7860 return 0;
7861
7862 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7863 if (!nl_pats)
7864 return -ENOBUFS;
7865
7866 for (i = 0; i < wowlan->n_patterns; i++) {
7867 nl_pat = nla_nest_start(msg, i + 1);
7868 if (!nl_pat)
7869 return -ENOBUFS;
7870 pat_len = wowlan->patterns[i].pattern_len;
7871 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7872 wowlan->patterns[i].mask) ||
7873 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7874 wowlan->patterns[i].pattern) ||
7875 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7876 wowlan->patterns[i].pkt_offset))
7877 return -ENOBUFS;
7878 nla_nest_end(msg, nl_pat);
7879 }
7880 nla_nest_end(msg, nl_pats);
7881
7882 return 0;
7883 }
7884
7885 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7886 struct cfg80211_wowlan_tcp *tcp)
7887 {
7888 struct nlattr *nl_tcp;
7889
7890 if (!tcp)
7891 return 0;
7892
7893 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7894 if (!nl_tcp)
7895 return -ENOBUFS;
7896
7897 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7898 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7899 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7900 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7901 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7902 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7903 tcp->payload_len, tcp->payload) ||
7904 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7905 tcp->data_interval) ||
7906 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7907 tcp->wake_len, tcp->wake_data) ||
7908 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7909 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7910 return -ENOBUFS;
7911
7912 if (tcp->payload_seq.len &&
7913 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7914 sizeof(tcp->payload_seq), &tcp->payload_seq))
7915 return -ENOBUFS;
7916
7917 if (tcp->payload_tok.len &&
7918 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7919 sizeof(tcp->payload_tok) + tcp->tokens_size,
7920 &tcp->payload_tok))
7921 return -ENOBUFS;
7922
7923 nla_nest_end(msg, nl_tcp);
7924
7925 return 0;
7926 }
7927
7928 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7929 {
7930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7931 struct sk_buff *msg;
7932 void *hdr;
7933 u32 size = NLMSG_DEFAULT_SIZE;
7934
7935 if (!rdev->wiphy.wowlan)
7936 return -EOPNOTSUPP;
7937
7938 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7939 /* adjust size to have room for all the data */
7940 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7941 rdev->wiphy.wowlan_config->tcp->payload_len +
7942 rdev->wiphy.wowlan_config->tcp->wake_len +
7943 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7944 }
7945
7946 msg = nlmsg_new(size, GFP_KERNEL);
7947 if (!msg)
7948 return -ENOMEM;
7949
7950 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7951 NL80211_CMD_GET_WOWLAN);
7952 if (!hdr)
7953 goto nla_put_failure;
7954
7955 if (rdev->wiphy.wowlan_config) {
7956 struct nlattr *nl_wowlan;
7957
7958 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7959 if (!nl_wowlan)
7960 goto nla_put_failure;
7961
7962 if ((rdev->wiphy.wowlan_config->any &&
7963 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7964 (rdev->wiphy.wowlan_config->disconnect &&
7965 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7966 (rdev->wiphy.wowlan_config->magic_pkt &&
7967 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7968 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7969 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7970 (rdev->wiphy.wowlan_config->eap_identity_req &&
7971 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7972 (rdev->wiphy.wowlan_config->four_way_handshake &&
7973 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7974 (rdev->wiphy.wowlan_config->rfkill_release &&
7975 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7976 goto nla_put_failure;
7977
7978 if (nl80211_send_wowlan_patterns(msg, rdev))
7979 goto nla_put_failure;
7980
7981 if (nl80211_send_wowlan_tcp(msg,
7982 rdev->wiphy.wowlan_config->tcp))
7983 goto nla_put_failure;
7984
7985 nla_nest_end(msg, nl_wowlan);
7986 }
7987
7988 genlmsg_end(msg, hdr);
7989 return genlmsg_reply(msg, info);
7990
7991 nla_put_failure:
7992 nlmsg_free(msg);
7993 return -ENOBUFS;
7994 }
7995
7996 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7997 struct nlattr *attr,
7998 struct cfg80211_wowlan *trig)
7999 {
8000 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8001 struct cfg80211_wowlan_tcp *cfg;
8002 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8003 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8004 u32 size;
8005 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8006 int err, port;
8007
8008 if (!rdev->wiphy.wowlan->tcp)
8009 return -EINVAL;
8010
8011 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8012 nla_data(attr), nla_len(attr),
8013 nl80211_wowlan_tcp_policy);
8014 if (err)
8015 return err;
8016
8017 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8018 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8019 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8020 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8021 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8022 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8023 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8024 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8025 return -EINVAL;
8026
8027 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8028 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8029 return -EINVAL;
8030
8031 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8032 rdev->wiphy.wowlan->tcp->data_interval_max ||
8033 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8034 return -EINVAL;
8035
8036 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8037 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8038 return -EINVAL;
8039
8040 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8041 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8042 return -EINVAL;
8043
8044 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8045 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8046
8047 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8048 tokens_size = tokln - sizeof(*tok);
8049
8050 if (!tok->len || tokens_size % tok->len)
8051 return -EINVAL;
8052 if (!rdev->wiphy.wowlan->tcp->tok)
8053 return -EINVAL;
8054 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8055 return -EINVAL;
8056 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8057 return -EINVAL;
8058 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8059 return -EINVAL;
8060 if (tok->offset + tok->len > data_size)
8061 return -EINVAL;
8062 }
8063
8064 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8065 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8066 if (!rdev->wiphy.wowlan->tcp->seq)
8067 return -EINVAL;
8068 if (seq->len == 0 || seq->len > 4)
8069 return -EINVAL;
8070 if (seq->len + seq->offset > data_size)
8071 return -EINVAL;
8072 }
8073
8074 size = sizeof(*cfg);
8075 size += data_size;
8076 size += wake_size + wake_mask_size;
8077 size += tokens_size;
8078
8079 cfg = kzalloc(size, GFP_KERNEL);
8080 if (!cfg)
8081 return -ENOMEM;
8082 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8083 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8084 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8085 ETH_ALEN);
8086 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8087 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8088 else
8089 port = 0;
8090 #ifdef CONFIG_INET
8091 /* allocate a socket and port for it and use it */
8092 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8093 IPPROTO_TCP, &cfg->sock, 1);
8094 if (err) {
8095 kfree(cfg);
8096 return err;
8097 }
8098 if (inet_csk_get_port(cfg->sock->sk, port)) {
8099 sock_release(cfg->sock);
8100 kfree(cfg);
8101 return -EADDRINUSE;
8102 }
8103 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8104 #else
8105 if (!port) {
8106 kfree(cfg);
8107 return -EINVAL;
8108 }
8109 cfg->src_port = port;
8110 #endif
8111
8112 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8113 cfg->payload_len = data_size;
8114 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8115 memcpy((void *)cfg->payload,
8116 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8117 data_size);
8118 if (seq)
8119 cfg->payload_seq = *seq;
8120 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8121 cfg->wake_len = wake_size;
8122 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8123 memcpy((void *)cfg->wake_data,
8124 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8125 wake_size);
8126 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8127 data_size + wake_size;
8128 memcpy((void *)cfg->wake_mask,
8129 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8130 wake_mask_size);
8131 if (tok) {
8132 cfg->tokens_size = tokens_size;
8133 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8134 }
8135
8136 trig->tcp = cfg;
8137
8138 return 0;
8139 }
8140
8141 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8142 {
8143 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8144 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8145 struct cfg80211_wowlan new_triggers = {};
8146 struct cfg80211_wowlan *ntrig;
8147 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8148 int err, i;
8149 bool prev_enabled = rdev->wiphy.wowlan_config;
8150
8151 if (!wowlan)
8152 return -EOPNOTSUPP;
8153
8154 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8155 cfg80211_rdev_free_wowlan(rdev);
8156 rdev->wiphy.wowlan_config = NULL;
8157 goto set_wakeup;
8158 }
8159
8160 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8161 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8162 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8163 nl80211_wowlan_policy);
8164 if (err)
8165 return err;
8166
8167 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8168 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8169 return -EINVAL;
8170 new_triggers.any = true;
8171 }
8172
8173 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8174 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8175 return -EINVAL;
8176 new_triggers.disconnect = true;
8177 }
8178
8179 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8180 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8181 return -EINVAL;
8182 new_triggers.magic_pkt = true;
8183 }
8184
8185 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8186 return -EINVAL;
8187
8188 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8189 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8190 return -EINVAL;
8191 new_triggers.gtk_rekey_failure = true;
8192 }
8193
8194 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8195 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8196 return -EINVAL;
8197 new_triggers.eap_identity_req = true;
8198 }
8199
8200 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8201 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8202 return -EINVAL;
8203 new_triggers.four_way_handshake = true;
8204 }
8205
8206 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8207 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8208 return -EINVAL;
8209 new_triggers.rfkill_release = true;
8210 }
8211
8212 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8213 struct nlattr *pat;
8214 int n_patterns = 0;
8215 int rem, pat_len, mask_len, pkt_offset;
8216 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8217
8218 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8219 rem)
8220 n_patterns++;
8221 if (n_patterns > wowlan->n_patterns)
8222 return -EINVAL;
8223
8224 new_triggers.patterns = kcalloc(n_patterns,
8225 sizeof(new_triggers.patterns[0]),
8226 GFP_KERNEL);
8227 if (!new_triggers.patterns)
8228 return -ENOMEM;
8229
8230 new_triggers.n_patterns = n_patterns;
8231 i = 0;
8232
8233 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8234 rem) {
8235 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8236 nla_len(pat), NULL);
8237 err = -EINVAL;
8238 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8239 !pat_tb[NL80211_PKTPAT_PATTERN])
8240 goto error;
8241 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8242 mask_len = DIV_ROUND_UP(pat_len, 8);
8243 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8244 goto error;
8245 if (pat_len > wowlan->pattern_max_len ||
8246 pat_len < wowlan->pattern_min_len)
8247 goto error;
8248
8249 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8250 pkt_offset = 0;
8251 else
8252 pkt_offset = nla_get_u32(
8253 pat_tb[NL80211_PKTPAT_OFFSET]);
8254 if (pkt_offset > wowlan->max_pkt_offset)
8255 goto error;
8256 new_triggers.patterns[i].pkt_offset = pkt_offset;
8257
8258 new_triggers.patterns[i].mask =
8259 kmalloc(mask_len + pat_len, GFP_KERNEL);
8260 if (!new_triggers.patterns[i].mask) {
8261 err = -ENOMEM;
8262 goto error;
8263 }
8264 new_triggers.patterns[i].pattern =
8265 new_triggers.patterns[i].mask + mask_len;
8266 memcpy(new_triggers.patterns[i].mask,
8267 nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8268 mask_len);
8269 new_triggers.patterns[i].pattern_len = pat_len;
8270 memcpy(new_triggers.patterns[i].pattern,
8271 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8272 pat_len);
8273 i++;
8274 }
8275 }
8276
8277 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8278 err = nl80211_parse_wowlan_tcp(
8279 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8280 &new_triggers);
8281 if (err)
8282 goto error;
8283 }
8284
8285 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8286 if (!ntrig) {
8287 err = -ENOMEM;
8288 goto error;
8289 }
8290 cfg80211_rdev_free_wowlan(rdev);
8291 rdev->wiphy.wowlan_config = ntrig;
8292
8293 set_wakeup:
8294 if (rdev->ops->set_wakeup &&
8295 prev_enabled != !!rdev->wiphy.wowlan_config)
8296 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8297
8298 return 0;
8299 error:
8300 for (i = 0; i < new_triggers.n_patterns; i++)
8301 kfree(new_triggers.patterns[i].mask);
8302 kfree(new_triggers.patterns);
8303 if (new_triggers.tcp && new_triggers.tcp->sock)
8304 sock_release(new_triggers.tcp->sock);
8305 kfree(new_triggers.tcp);
8306 return err;
8307 }
8308 #endif
8309
8310 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8311 struct cfg80211_registered_device *rdev)
8312 {
8313 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8314 int i, j, pat_len;
8315 struct cfg80211_coalesce_rules *rule;
8316
8317 if (!rdev->coalesce->n_rules)
8318 return 0;
8319
8320 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8321 if (!nl_rules)
8322 return -ENOBUFS;
8323
8324 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8325 nl_rule = nla_nest_start(msg, i + 1);
8326 if (!nl_rule)
8327 return -ENOBUFS;
8328
8329 rule = &rdev->coalesce->rules[i];
8330 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8331 rule->delay))
8332 return -ENOBUFS;
8333
8334 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8335 rule->condition))
8336 return -ENOBUFS;
8337
8338 nl_pats = nla_nest_start(msg,
8339 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8340 if (!nl_pats)
8341 return -ENOBUFS;
8342
8343 for (j = 0; j < rule->n_patterns; j++) {
8344 nl_pat = nla_nest_start(msg, j + 1);
8345 if (!nl_pat)
8346 return -ENOBUFS;
8347 pat_len = rule->patterns[j].pattern_len;
8348 if (nla_put(msg, NL80211_PKTPAT_MASK,
8349 DIV_ROUND_UP(pat_len, 8),
8350 rule->patterns[j].mask) ||
8351 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8352 rule->patterns[j].pattern) ||
8353 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8354 rule->patterns[j].pkt_offset))
8355 return -ENOBUFS;
8356 nla_nest_end(msg, nl_pat);
8357 }
8358 nla_nest_end(msg, nl_pats);
8359 nla_nest_end(msg, nl_rule);
8360 }
8361 nla_nest_end(msg, nl_rules);
8362
8363 return 0;
8364 }
8365
8366 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8367 {
8368 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8369 struct sk_buff *msg;
8370 void *hdr;
8371
8372 if (!rdev->wiphy.coalesce)
8373 return -EOPNOTSUPP;
8374
8375 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8376 if (!msg)
8377 return -ENOMEM;
8378
8379 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8380 NL80211_CMD_GET_COALESCE);
8381 if (!hdr)
8382 goto nla_put_failure;
8383
8384 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8385 goto nla_put_failure;
8386
8387 genlmsg_end(msg, hdr);
8388 return genlmsg_reply(msg, info);
8389
8390 nla_put_failure:
8391 nlmsg_free(msg);
8392 return -ENOBUFS;
8393 }
8394
8395 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8396 {
8397 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8398 int i, j;
8399 struct cfg80211_coalesce_rules *rule;
8400
8401 if (!coalesce)
8402 return;
8403
8404 for (i = 0; i < coalesce->n_rules; i++) {
8405 rule = &coalesce->rules[i];
8406 for (j = 0; j < rule->n_patterns; j++)
8407 kfree(rule->patterns[j].mask);
8408 kfree(rule->patterns);
8409 }
8410 kfree(coalesce->rules);
8411 kfree(coalesce);
8412 rdev->coalesce = NULL;
8413 }
8414
8415 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8416 struct nlattr *rule,
8417 struct cfg80211_coalesce_rules *new_rule)
8418 {
8419 int err, i;
8420 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8421 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8422 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8423 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8424
8425 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8426 nla_len(rule), nl80211_coalesce_policy);
8427 if (err)
8428 return err;
8429
8430 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8431 new_rule->delay =
8432 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8433 if (new_rule->delay > coalesce->max_delay)
8434 return -EINVAL;
8435
8436 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8437 new_rule->condition =
8438 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8439 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8440 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8441 return -EINVAL;
8442
8443 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8444 return -EINVAL;
8445
8446 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8447 rem)
8448 n_patterns++;
8449 if (n_patterns > coalesce->n_patterns)
8450 return -EINVAL;
8451
8452 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8453 GFP_KERNEL);
8454 if (!new_rule->patterns)
8455 return -ENOMEM;
8456
8457 new_rule->n_patterns = n_patterns;
8458 i = 0;
8459
8460 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8461 rem) {
8462 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8463 nla_len(pat), NULL);
8464 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8465 !pat_tb[NL80211_PKTPAT_PATTERN])
8466 return -EINVAL;
8467 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8468 mask_len = DIV_ROUND_UP(pat_len, 8);
8469 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8470 return -EINVAL;
8471 if (pat_len > coalesce->pattern_max_len ||
8472 pat_len < coalesce->pattern_min_len)
8473 return -EINVAL;
8474
8475 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8476 pkt_offset = 0;
8477 else
8478 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8479 if (pkt_offset > coalesce->max_pkt_offset)
8480 return -EINVAL;
8481 new_rule->patterns[i].pkt_offset = pkt_offset;
8482
8483 new_rule->patterns[i].mask =
8484 kmalloc(mask_len + pat_len, GFP_KERNEL);
8485 if (!new_rule->patterns[i].mask)
8486 return -ENOMEM;
8487 new_rule->patterns[i].pattern =
8488 new_rule->patterns[i].mask + mask_len;
8489 memcpy(new_rule->patterns[i].mask,
8490 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8491 new_rule->patterns[i].pattern_len = pat_len;
8492 memcpy(new_rule->patterns[i].pattern,
8493 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8494 i++;
8495 }
8496
8497 return 0;
8498 }
8499
8500 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8501 {
8502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8503 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8504 struct cfg80211_coalesce new_coalesce = {};
8505 struct cfg80211_coalesce *n_coalesce;
8506 int err, rem_rule, n_rules = 0, i, j;
8507 struct nlattr *rule;
8508 struct cfg80211_coalesce_rules *tmp_rule;
8509
8510 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8511 return -EOPNOTSUPP;
8512
8513 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8514 cfg80211_rdev_free_coalesce(rdev);
8515 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8516 return 0;
8517 }
8518
8519 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8520 rem_rule)
8521 n_rules++;
8522 if (n_rules > coalesce->n_rules)
8523 return -EINVAL;
8524
8525 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8526 GFP_KERNEL);
8527 if (!new_coalesce.rules)
8528 return -ENOMEM;
8529
8530 new_coalesce.n_rules = n_rules;
8531 i = 0;
8532
8533 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8534 rem_rule) {
8535 err = nl80211_parse_coalesce_rule(rdev, rule,
8536 &new_coalesce.rules[i]);
8537 if (err)
8538 goto error;
8539
8540 i++;
8541 }
8542
8543 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8544 if (err)
8545 goto error;
8546
8547 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8548 if (!n_coalesce) {
8549 err = -ENOMEM;
8550 goto error;
8551 }
8552 cfg80211_rdev_free_coalesce(rdev);
8553 rdev->coalesce = n_coalesce;
8554
8555 return 0;
8556 error:
8557 for (i = 0; i < new_coalesce.n_rules; i++) {
8558 tmp_rule = &new_coalesce.rules[i];
8559 for (j = 0; j < tmp_rule->n_patterns; j++)
8560 kfree(tmp_rule->patterns[j].mask);
8561 kfree(tmp_rule->patterns);
8562 }
8563 kfree(new_coalesce.rules);
8564
8565 return err;
8566 }
8567
8568 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8569 {
8570 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8571 struct net_device *dev = info->user_ptr[1];
8572 struct wireless_dev *wdev = dev->ieee80211_ptr;
8573 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8574 struct cfg80211_gtk_rekey_data rekey_data;
8575 int err;
8576
8577 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8578 return -EINVAL;
8579
8580 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8581 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8582 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8583 nl80211_rekey_policy);
8584 if (err)
8585 return err;
8586
8587 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8588 return -ERANGE;
8589 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8590 return -ERANGE;
8591 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8592 return -ERANGE;
8593
8594 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8595 NL80211_KEK_LEN);
8596 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8597 NL80211_KCK_LEN);
8598 memcpy(rekey_data.replay_ctr,
8599 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8600 NL80211_REPLAY_CTR_LEN);
8601
8602 wdev_lock(wdev);
8603 if (!wdev->current_bss) {
8604 err = -ENOTCONN;
8605 goto out;
8606 }
8607
8608 if (!rdev->ops->set_rekey_data) {
8609 err = -EOPNOTSUPP;
8610 goto out;
8611 }
8612
8613 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8614 out:
8615 wdev_unlock(wdev);
8616 return err;
8617 }
8618
8619 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8620 struct genl_info *info)
8621 {
8622 struct net_device *dev = info->user_ptr[1];
8623 struct wireless_dev *wdev = dev->ieee80211_ptr;
8624
8625 if (wdev->iftype != NL80211_IFTYPE_AP &&
8626 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8627 return -EINVAL;
8628
8629 if (wdev->ap_unexpected_nlportid)
8630 return -EBUSY;
8631
8632 wdev->ap_unexpected_nlportid = info->snd_portid;
8633 return 0;
8634 }
8635
8636 static int nl80211_probe_client(struct sk_buff *skb,
8637 struct genl_info *info)
8638 {
8639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8640 struct net_device *dev = info->user_ptr[1];
8641 struct wireless_dev *wdev = dev->ieee80211_ptr;
8642 struct sk_buff *msg;
8643 void *hdr;
8644 const u8 *addr;
8645 u64 cookie;
8646 int err;
8647
8648 if (wdev->iftype != NL80211_IFTYPE_AP &&
8649 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8650 return -EOPNOTSUPP;
8651
8652 if (!info->attrs[NL80211_ATTR_MAC])
8653 return -EINVAL;
8654
8655 if (!rdev->ops->probe_client)
8656 return -EOPNOTSUPP;
8657
8658 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8659 if (!msg)
8660 return -ENOMEM;
8661
8662 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8663 NL80211_CMD_PROBE_CLIENT);
8664 if (!hdr) {
8665 err = -ENOBUFS;
8666 goto free_msg;
8667 }
8668
8669 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8670
8671 err = rdev_probe_client(rdev, dev, addr, &cookie);
8672 if (err)
8673 goto free_msg;
8674
8675 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8676 goto nla_put_failure;
8677
8678 genlmsg_end(msg, hdr);
8679
8680 return genlmsg_reply(msg, info);
8681
8682 nla_put_failure:
8683 err = -ENOBUFS;
8684 free_msg:
8685 nlmsg_free(msg);
8686 return err;
8687 }
8688
8689 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8690 {
8691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8692 struct cfg80211_beacon_registration *reg, *nreg;
8693 int rv;
8694
8695 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8696 return -EOPNOTSUPP;
8697
8698 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8699 if (!nreg)
8700 return -ENOMEM;
8701
8702 /* First, check if already registered. */
8703 spin_lock_bh(&rdev->beacon_registrations_lock);
8704 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8705 if (reg->nlportid == info->snd_portid) {
8706 rv = -EALREADY;
8707 goto out_err;
8708 }
8709 }
8710 /* Add it to the list */
8711 nreg->nlportid = info->snd_portid;
8712 list_add(&nreg->list, &rdev->beacon_registrations);
8713
8714 spin_unlock_bh(&rdev->beacon_registrations_lock);
8715
8716 return 0;
8717 out_err:
8718 spin_unlock_bh(&rdev->beacon_registrations_lock);
8719 kfree(nreg);
8720 return rv;
8721 }
8722
8723 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8724 {
8725 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8726 struct wireless_dev *wdev = info->user_ptr[1];
8727 int err;
8728
8729 if (!rdev->ops->start_p2p_device)
8730 return -EOPNOTSUPP;
8731
8732 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8733 return -EOPNOTSUPP;
8734
8735 if (wdev->p2p_started)
8736 return 0;
8737
8738 err = cfg80211_can_add_interface(rdev, wdev->iftype);
8739 if (err)
8740 return err;
8741
8742 err = rdev_start_p2p_device(rdev, wdev);
8743 if (err)
8744 return err;
8745
8746 wdev->p2p_started = true;
8747 rdev->opencount++;
8748
8749 return 0;
8750 }
8751
8752 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8753 {
8754 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8755 struct wireless_dev *wdev = info->user_ptr[1];
8756
8757 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8758 return -EOPNOTSUPP;
8759
8760 if (!rdev->ops->stop_p2p_device)
8761 return -EOPNOTSUPP;
8762
8763 cfg80211_stop_p2p_device(rdev, wdev);
8764
8765 return 0;
8766 }
8767
8768 static int nl80211_get_protocol_features(struct sk_buff *skb,
8769 struct genl_info *info)
8770 {
8771 void *hdr;
8772 struct sk_buff *msg;
8773
8774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8775 if (!msg)
8776 return -ENOMEM;
8777
8778 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8779 NL80211_CMD_GET_PROTOCOL_FEATURES);
8780 if (!hdr)
8781 goto nla_put_failure;
8782
8783 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8784 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8785 goto nla_put_failure;
8786
8787 genlmsg_end(msg, hdr);
8788 return genlmsg_reply(msg, info);
8789
8790 nla_put_failure:
8791 kfree_skb(msg);
8792 return -ENOBUFS;
8793 }
8794
8795 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8796 {
8797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8798 struct cfg80211_update_ft_ies_params ft_params;
8799 struct net_device *dev = info->user_ptr[1];
8800
8801 if (!rdev->ops->update_ft_ies)
8802 return -EOPNOTSUPP;
8803
8804 if (!info->attrs[NL80211_ATTR_MDID] ||
8805 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8806 return -EINVAL;
8807
8808 memset(&ft_params, 0, sizeof(ft_params));
8809 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8810 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8811 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8812
8813 return rdev_update_ft_ies(rdev, dev, &ft_params);
8814 }
8815
8816 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8817 struct genl_info *info)
8818 {
8819 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8820 struct wireless_dev *wdev = info->user_ptr[1];
8821 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8822 u16 duration;
8823 int ret;
8824
8825 if (!rdev->ops->crit_proto_start)
8826 return -EOPNOTSUPP;
8827
8828 if (WARN_ON(!rdev->ops->crit_proto_stop))
8829 return -EINVAL;
8830
8831 if (rdev->crit_proto_nlportid)
8832 return -EBUSY;
8833
8834 /* determine protocol if provided */
8835 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8836 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8837
8838 if (proto >= NUM_NL80211_CRIT_PROTO)
8839 return -EINVAL;
8840
8841 /* timeout must be provided */
8842 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8843 return -EINVAL;
8844
8845 duration =
8846 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8847
8848 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8849 return -ERANGE;
8850
8851 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8852 if (!ret)
8853 rdev->crit_proto_nlportid = info->snd_portid;
8854
8855 return ret;
8856 }
8857
8858 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8859 struct genl_info *info)
8860 {
8861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8862 struct wireless_dev *wdev = info->user_ptr[1];
8863
8864 if (!rdev->ops->crit_proto_stop)
8865 return -EOPNOTSUPP;
8866
8867 if (rdev->crit_proto_nlportid) {
8868 rdev->crit_proto_nlportid = 0;
8869 rdev_crit_proto_stop(rdev, wdev);
8870 }
8871 return 0;
8872 }
8873
8874 #define NL80211_FLAG_NEED_WIPHY 0x01
8875 #define NL80211_FLAG_NEED_NETDEV 0x02
8876 #define NL80211_FLAG_NEED_RTNL 0x04
8877 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
8878 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
8879 NL80211_FLAG_CHECK_NETDEV_UP)
8880 #define NL80211_FLAG_NEED_WDEV 0x10
8881 /* If a netdev is associated, it must be UP, P2P must be started */
8882 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
8883 NL80211_FLAG_CHECK_NETDEV_UP)
8884
8885 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
8886 struct genl_info *info)
8887 {
8888 struct cfg80211_registered_device *rdev;
8889 struct wireless_dev *wdev;
8890 struct net_device *dev;
8891 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8892
8893 if (rtnl)
8894 rtnl_lock();
8895
8896 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8897 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8898 if (IS_ERR(rdev)) {
8899 if (rtnl)
8900 rtnl_unlock();
8901 return PTR_ERR(rdev);
8902 }
8903 info->user_ptr[0] = rdev;
8904 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8905 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8906 ASSERT_RTNL();
8907
8908 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8909 info->attrs);
8910 if (IS_ERR(wdev)) {
8911 if (rtnl)
8912 rtnl_unlock();
8913 return PTR_ERR(wdev);
8914 }
8915
8916 dev = wdev->netdev;
8917 rdev = wiphy_to_dev(wdev->wiphy);
8918
8919 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8920 if (!dev) {
8921 if (rtnl)
8922 rtnl_unlock();
8923 return -EINVAL;
8924 }
8925
8926 info->user_ptr[1] = dev;
8927 } else {
8928 info->user_ptr[1] = wdev;
8929 }
8930
8931 if (dev) {
8932 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8933 !netif_running(dev)) {
8934 if (rtnl)
8935 rtnl_unlock();
8936 return -ENETDOWN;
8937 }
8938
8939 dev_hold(dev);
8940 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8941 if (!wdev->p2p_started) {
8942 if (rtnl)
8943 rtnl_unlock();
8944 return -ENETDOWN;
8945 }
8946 }
8947
8948 info->user_ptr[0] = rdev;
8949 }
8950
8951 return 0;
8952 }
8953
8954 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
8955 struct genl_info *info)
8956 {
8957 if (info->user_ptr[1]) {
8958 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8959 struct wireless_dev *wdev = info->user_ptr[1];
8960
8961 if (wdev->netdev)
8962 dev_put(wdev->netdev);
8963 } else {
8964 dev_put(info->user_ptr[1]);
8965 }
8966 }
8967 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8968 rtnl_unlock();
8969 }
8970
8971 static const struct genl_ops nl80211_ops[] = {
8972 {
8973 .cmd = NL80211_CMD_GET_WIPHY,
8974 .doit = nl80211_get_wiphy,
8975 .dumpit = nl80211_dump_wiphy,
8976 .done = nl80211_dump_wiphy_done,
8977 .policy = nl80211_policy,
8978 /* can be retrieved by unprivileged users */
8979 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8980 NL80211_FLAG_NEED_RTNL,
8981 },
8982 {
8983 .cmd = NL80211_CMD_SET_WIPHY,
8984 .doit = nl80211_set_wiphy,
8985 .policy = nl80211_policy,
8986 .flags = GENL_ADMIN_PERM,
8987 .internal_flags = NL80211_FLAG_NEED_RTNL,
8988 },
8989 {
8990 .cmd = NL80211_CMD_GET_INTERFACE,
8991 .doit = nl80211_get_interface,
8992 .dumpit = nl80211_dump_interface,
8993 .policy = nl80211_policy,
8994 /* can be retrieved by unprivileged users */
8995 .internal_flags = NL80211_FLAG_NEED_WDEV |
8996 NL80211_FLAG_NEED_RTNL,
8997 },
8998 {
8999 .cmd = NL80211_CMD_SET_INTERFACE,
9000 .doit = nl80211_set_interface,
9001 .policy = nl80211_policy,
9002 .flags = GENL_ADMIN_PERM,
9003 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9004 NL80211_FLAG_NEED_RTNL,
9005 },
9006 {
9007 .cmd = NL80211_CMD_NEW_INTERFACE,
9008 .doit = nl80211_new_interface,
9009 .policy = nl80211_policy,
9010 .flags = GENL_ADMIN_PERM,
9011 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9012 NL80211_FLAG_NEED_RTNL,
9013 },
9014 {
9015 .cmd = NL80211_CMD_DEL_INTERFACE,
9016 .doit = nl80211_del_interface,
9017 .policy = nl80211_policy,
9018 .flags = GENL_ADMIN_PERM,
9019 .internal_flags = NL80211_FLAG_NEED_WDEV |
9020 NL80211_FLAG_NEED_RTNL,
9021 },
9022 {
9023 .cmd = NL80211_CMD_GET_KEY,
9024 .doit = nl80211_get_key,
9025 .policy = nl80211_policy,
9026 .flags = GENL_ADMIN_PERM,
9027 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9028 NL80211_FLAG_NEED_RTNL,
9029 },
9030 {
9031 .cmd = NL80211_CMD_SET_KEY,
9032 .doit = nl80211_set_key,
9033 .policy = nl80211_policy,
9034 .flags = GENL_ADMIN_PERM,
9035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9036 NL80211_FLAG_NEED_RTNL,
9037 },
9038 {
9039 .cmd = NL80211_CMD_NEW_KEY,
9040 .doit = nl80211_new_key,
9041 .policy = nl80211_policy,
9042 .flags = GENL_ADMIN_PERM,
9043 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9044 NL80211_FLAG_NEED_RTNL,
9045 },
9046 {
9047 .cmd = NL80211_CMD_DEL_KEY,
9048 .doit = nl80211_del_key,
9049 .policy = nl80211_policy,
9050 .flags = GENL_ADMIN_PERM,
9051 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9052 NL80211_FLAG_NEED_RTNL,
9053 },
9054 {
9055 .cmd = NL80211_CMD_SET_BEACON,
9056 .policy = nl80211_policy,
9057 .flags = GENL_ADMIN_PERM,
9058 .doit = nl80211_set_beacon,
9059 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9060 NL80211_FLAG_NEED_RTNL,
9061 },
9062 {
9063 .cmd = NL80211_CMD_START_AP,
9064 .policy = nl80211_policy,
9065 .flags = GENL_ADMIN_PERM,
9066 .doit = nl80211_start_ap,
9067 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9068 NL80211_FLAG_NEED_RTNL,
9069 },
9070 {
9071 .cmd = NL80211_CMD_STOP_AP,
9072 .policy = nl80211_policy,
9073 .flags = GENL_ADMIN_PERM,
9074 .doit = nl80211_stop_ap,
9075 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9076 NL80211_FLAG_NEED_RTNL,
9077 },
9078 {
9079 .cmd = NL80211_CMD_GET_STATION,
9080 .doit = nl80211_get_station,
9081 .dumpit = nl80211_dump_station,
9082 .policy = nl80211_policy,
9083 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9084 NL80211_FLAG_NEED_RTNL,
9085 },
9086 {
9087 .cmd = NL80211_CMD_SET_STATION,
9088 .doit = nl80211_set_station,
9089 .policy = nl80211_policy,
9090 .flags = GENL_ADMIN_PERM,
9091 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9092 NL80211_FLAG_NEED_RTNL,
9093 },
9094 {
9095 .cmd = NL80211_CMD_NEW_STATION,
9096 .doit = nl80211_new_station,
9097 .policy = nl80211_policy,
9098 .flags = GENL_ADMIN_PERM,
9099 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9100 NL80211_FLAG_NEED_RTNL,
9101 },
9102 {
9103 .cmd = NL80211_CMD_DEL_STATION,
9104 .doit = nl80211_del_station,
9105 .policy = nl80211_policy,
9106 .flags = GENL_ADMIN_PERM,
9107 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9108 NL80211_FLAG_NEED_RTNL,
9109 },
9110 {
9111 .cmd = NL80211_CMD_GET_MPATH,
9112 .doit = nl80211_get_mpath,
9113 .dumpit = nl80211_dump_mpath,
9114 .policy = nl80211_policy,
9115 .flags = GENL_ADMIN_PERM,
9116 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9117 NL80211_FLAG_NEED_RTNL,
9118 },
9119 {
9120 .cmd = NL80211_CMD_SET_MPATH,
9121 .doit = nl80211_set_mpath,
9122 .policy = nl80211_policy,
9123 .flags = GENL_ADMIN_PERM,
9124 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9125 NL80211_FLAG_NEED_RTNL,
9126 },
9127 {
9128 .cmd = NL80211_CMD_NEW_MPATH,
9129 .doit = nl80211_new_mpath,
9130 .policy = nl80211_policy,
9131 .flags = GENL_ADMIN_PERM,
9132 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9133 NL80211_FLAG_NEED_RTNL,
9134 },
9135 {
9136 .cmd = NL80211_CMD_DEL_MPATH,
9137 .doit = nl80211_del_mpath,
9138 .policy = nl80211_policy,
9139 .flags = GENL_ADMIN_PERM,
9140 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9141 NL80211_FLAG_NEED_RTNL,
9142 },
9143 {
9144 .cmd = NL80211_CMD_SET_BSS,
9145 .doit = nl80211_set_bss,
9146 .policy = nl80211_policy,
9147 .flags = GENL_ADMIN_PERM,
9148 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9149 NL80211_FLAG_NEED_RTNL,
9150 },
9151 {
9152 .cmd = NL80211_CMD_GET_REG,
9153 .doit = nl80211_get_reg,
9154 .policy = nl80211_policy,
9155 .internal_flags = NL80211_FLAG_NEED_RTNL,
9156 /* can be retrieved by unprivileged users */
9157 },
9158 {
9159 .cmd = NL80211_CMD_SET_REG,
9160 .doit = nl80211_set_reg,
9161 .policy = nl80211_policy,
9162 .flags = GENL_ADMIN_PERM,
9163 .internal_flags = NL80211_FLAG_NEED_RTNL,
9164 },
9165 {
9166 .cmd = NL80211_CMD_REQ_SET_REG,
9167 .doit = nl80211_req_set_reg,
9168 .policy = nl80211_policy,
9169 .flags = GENL_ADMIN_PERM,
9170 },
9171 {
9172 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9173 .doit = nl80211_get_mesh_config,
9174 .policy = nl80211_policy,
9175 /* can be retrieved by unprivileged users */
9176 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9177 NL80211_FLAG_NEED_RTNL,
9178 },
9179 {
9180 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9181 .doit = nl80211_update_mesh_config,
9182 .policy = nl80211_policy,
9183 .flags = GENL_ADMIN_PERM,
9184 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9185 NL80211_FLAG_NEED_RTNL,
9186 },
9187 {
9188 .cmd = NL80211_CMD_TRIGGER_SCAN,
9189 .doit = nl80211_trigger_scan,
9190 .policy = nl80211_policy,
9191 .flags = GENL_ADMIN_PERM,
9192 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9193 NL80211_FLAG_NEED_RTNL,
9194 },
9195 {
9196 .cmd = NL80211_CMD_GET_SCAN,
9197 .policy = nl80211_policy,
9198 .dumpit = nl80211_dump_scan,
9199 },
9200 {
9201 .cmd = NL80211_CMD_START_SCHED_SCAN,
9202 .doit = nl80211_start_sched_scan,
9203 .policy = nl80211_policy,
9204 .flags = GENL_ADMIN_PERM,
9205 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9206 NL80211_FLAG_NEED_RTNL,
9207 },
9208 {
9209 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9210 .doit = nl80211_stop_sched_scan,
9211 .policy = nl80211_policy,
9212 .flags = GENL_ADMIN_PERM,
9213 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9214 NL80211_FLAG_NEED_RTNL,
9215 },
9216 {
9217 .cmd = NL80211_CMD_AUTHENTICATE,
9218 .doit = nl80211_authenticate,
9219 .policy = nl80211_policy,
9220 .flags = GENL_ADMIN_PERM,
9221 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9222 NL80211_FLAG_NEED_RTNL,
9223 },
9224 {
9225 .cmd = NL80211_CMD_ASSOCIATE,
9226 .doit = nl80211_associate,
9227 .policy = nl80211_policy,
9228 .flags = GENL_ADMIN_PERM,
9229 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9230 NL80211_FLAG_NEED_RTNL,
9231 },
9232 {
9233 .cmd = NL80211_CMD_DEAUTHENTICATE,
9234 .doit = nl80211_deauthenticate,
9235 .policy = nl80211_policy,
9236 .flags = GENL_ADMIN_PERM,
9237 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9238 NL80211_FLAG_NEED_RTNL,
9239 },
9240 {
9241 .cmd = NL80211_CMD_DISASSOCIATE,
9242 .doit = nl80211_disassociate,
9243 .policy = nl80211_policy,
9244 .flags = GENL_ADMIN_PERM,
9245 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9246 NL80211_FLAG_NEED_RTNL,
9247 },
9248 {
9249 .cmd = NL80211_CMD_JOIN_IBSS,
9250 .doit = nl80211_join_ibss,
9251 .policy = nl80211_policy,
9252 .flags = GENL_ADMIN_PERM,
9253 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9254 NL80211_FLAG_NEED_RTNL,
9255 },
9256 {
9257 .cmd = NL80211_CMD_LEAVE_IBSS,
9258 .doit = nl80211_leave_ibss,
9259 .policy = nl80211_policy,
9260 .flags = GENL_ADMIN_PERM,
9261 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9262 NL80211_FLAG_NEED_RTNL,
9263 },
9264 #ifdef CONFIG_NL80211_TESTMODE
9265 {
9266 .cmd = NL80211_CMD_TESTMODE,
9267 .doit = nl80211_testmode_do,
9268 .dumpit = nl80211_testmode_dump,
9269 .policy = nl80211_policy,
9270 .flags = GENL_ADMIN_PERM,
9271 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9272 NL80211_FLAG_NEED_RTNL,
9273 },
9274 #endif
9275 {
9276 .cmd = NL80211_CMD_CONNECT,
9277 .doit = nl80211_connect,
9278 .policy = nl80211_policy,
9279 .flags = GENL_ADMIN_PERM,
9280 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9281 NL80211_FLAG_NEED_RTNL,
9282 },
9283 {
9284 .cmd = NL80211_CMD_DISCONNECT,
9285 .doit = nl80211_disconnect,
9286 .policy = nl80211_policy,
9287 .flags = GENL_ADMIN_PERM,
9288 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9289 NL80211_FLAG_NEED_RTNL,
9290 },
9291 {
9292 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9293 .doit = nl80211_wiphy_netns,
9294 .policy = nl80211_policy,
9295 .flags = GENL_ADMIN_PERM,
9296 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9297 NL80211_FLAG_NEED_RTNL,
9298 },
9299 {
9300 .cmd = NL80211_CMD_GET_SURVEY,
9301 .policy = nl80211_policy,
9302 .dumpit = nl80211_dump_survey,
9303 },
9304 {
9305 .cmd = NL80211_CMD_SET_PMKSA,
9306 .doit = nl80211_setdel_pmksa,
9307 .policy = nl80211_policy,
9308 .flags = GENL_ADMIN_PERM,
9309 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9310 NL80211_FLAG_NEED_RTNL,
9311 },
9312 {
9313 .cmd = NL80211_CMD_DEL_PMKSA,
9314 .doit = nl80211_setdel_pmksa,
9315 .policy = nl80211_policy,
9316 .flags = GENL_ADMIN_PERM,
9317 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9318 NL80211_FLAG_NEED_RTNL,
9319 },
9320 {
9321 .cmd = NL80211_CMD_FLUSH_PMKSA,
9322 .doit = nl80211_flush_pmksa,
9323 .policy = nl80211_policy,
9324 .flags = GENL_ADMIN_PERM,
9325 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9326 NL80211_FLAG_NEED_RTNL,
9327 },
9328 {
9329 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9330 .doit = nl80211_remain_on_channel,
9331 .policy = nl80211_policy,
9332 .flags = GENL_ADMIN_PERM,
9333 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9334 NL80211_FLAG_NEED_RTNL,
9335 },
9336 {
9337 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9338 .doit = nl80211_cancel_remain_on_channel,
9339 .policy = nl80211_policy,
9340 .flags = GENL_ADMIN_PERM,
9341 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9342 NL80211_FLAG_NEED_RTNL,
9343 },
9344 {
9345 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9346 .doit = nl80211_set_tx_bitrate_mask,
9347 .policy = nl80211_policy,
9348 .flags = GENL_ADMIN_PERM,
9349 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9350 NL80211_FLAG_NEED_RTNL,
9351 },
9352 {
9353 .cmd = NL80211_CMD_REGISTER_FRAME,
9354 .doit = nl80211_register_mgmt,
9355 .policy = nl80211_policy,
9356 .flags = GENL_ADMIN_PERM,
9357 .internal_flags = NL80211_FLAG_NEED_WDEV |
9358 NL80211_FLAG_NEED_RTNL,
9359 },
9360 {
9361 .cmd = NL80211_CMD_FRAME,
9362 .doit = nl80211_tx_mgmt,
9363 .policy = nl80211_policy,
9364 .flags = GENL_ADMIN_PERM,
9365 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9366 NL80211_FLAG_NEED_RTNL,
9367 },
9368 {
9369 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9370 .doit = nl80211_tx_mgmt_cancel_wait,
9371 .policy = nl80211_policy,
9372 .flags = GENL_ADMIN_PERM,
9373 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9374 NL80211_FLAG_NEED_RTNL,
9375 },
9376 {
9377 .cmd = NL80211_CMD_SET_POWER_SAVE,
9378 .doit = nl80211_set_power_save,
9379 .policy = nl80211_policy,
9380 .flags = GENL_ADMIN_PERM,
9381 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9382 NL80211_FLAG_NEED_RTNL,
9383 },
9384 {
9385 .cmd = NL80211_CMD_GET_POWER_SAVE,
9386 .doit = nl80211_get_power_save,
9387 .policy = nl80211_policy,
9388 /* can be retrieved by unprivileged users */
9389 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9390 NL80211_FLAG_NEED_RTNL,
9391 },
9392 {
9393 .cmd = NL80211_CMD_SET_CQM,
9394 .doit = nl80211_set_cqm,
9395 .policy = nl80211_policy,
9396 .flags = GENL_ADMIN_PERM,
9397 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9398 NL80211_FLAG_NEED_RTNL,
9399 },
9400 {
9401 .cmd = NL80211_CMD_SET_CHANNEL,
9402 .doit = nl80211_set_channel,
9403 .policy = nl80211_policy,
9404 .flags = GENL_ADMIN_PERM,
9405 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9406 NL80211_FLAG_NEED_RTNL,
9407 },
9408 {
9409 .cmd = NL80211_CMD_SET_WDS_PEER,
9410 .doit = nl80211_set_wds_peer,
9411 .policy = nl80211_policy,
9412 .flags = GENL_ADMIN_PERM,
9413 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9414 NL80211_FLAG_NEED_RTNL,
9415 },
9416 {
9417 .cmd = NL80211_CMD_JOIN_MESH,
9418 .doit = nl80211_join_mesh,
9419 .policy = nl80211_policy,
9420 .flags = GENL_ADMIN_PERM,
9421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9422 NL80211_FLAG_NEED_RTNL,
9423 },
9424 {
9425 .cmd = NL80211_CMD_LEAVE_MESH,
9426 .doit = nl80211_leave_mesh,
9427 .policy = nl80211_policy,
9428 .flags = GENL_ADMIN_PERM,
9429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9430 NL80211_FLAG_NEED_RTNL,
9431 },
9432 #ifdef CONFIG_PM
9433 {
9434 .cmd = NL80211_CMD_GET_WOWLAN,
9435 .doit = nl80211_get_wowlan,
9436 .policy = nl80211_policy,
9437 /* can be retrieved by unprivileged users */
9438 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9439 NL80211_FLAG_NEED_RTNL,
9440 },
9441 {
9442 .cmd = NL80211_CMD_SET_WOWLAN,
9443 .doit = nl80211_set_wowlan,
9444 .policy = nl80211_policy,
9445 .flags = GENL_ADMIN_PERM,
9446 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9447 NL80211_FLAG_NEED_RTNL,
9448 },
9449 #endif
9450 {
9451 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9452 .doit = nl80211_set_rekey_data,
9453 .policy = nl80211_policy,
9454 .flags = GENL_ADMIN_PERM,
9455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9456 NL80211_FLAG_NEED_RTNL,
9457 },
9458 {
9459 .cmd = NL80211_CMD_TDLS_MGMT,
9460 .doit = nl80211_tdls_mgmt,
9461 .policy = nl80211_policy,
9462 .flags = GENL_ADMIN_PERM,
9463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9464 NL80211_FLAG_NEED_RTNL,
9465 },
9466 {
9467 .cmd = NL80211_CMD_TDLS_OPER,
9468 .doit = nl80211_tdls_oper,
9469 .policy = nl80211_policy,
9470 .flags = GENL_ADMIN_PERM,
9471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9472 NL80211_FLAG_NEED_RTNL,
9473 },
9474 {
9475 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9476 .doit = nl80211_register_unexpected_frame,
9477 .policy = nl80211_policy,
9478 .flags = GENL_ADMIN_PERM,
9479 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9480 NL80211_FLAG_NEED_RTNL,
9481 },
9482 {
9483 .cmd = NL80211_CMD_PROBE_CLIENT,
9484 .doit = nl80211_probe_client,
9485 .policy = nl80211_policy,
9486 .flags = GENL_ADMIN_PERM,
9487 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9488 NL80211_FLAG_NEED_RTNL,
9489 },
9490 {
9491 .cmd = NL80211_CMD_REGISTER_BEACONS,
9492 .doit = nl80211_register_beacons,
9493 .policy = nl80211_policy,
9494 .flags = GENL_ADMIN_PERM,
9495 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9496 NL80211_FLAG_NEED_RTNL,
9497 },
9498 {
9499 .cmd = NL80211_CMD_SET_NOACK_MAP,
9500 .doit = nl80211_set_noack_map,
9501 .policy = nl80211_policy,
9502 .flags = GENL_ADMIN_PERM,
9503 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9504 NL80211_FLAG_NEED_RTNL,
9505 },
9506 {
9507 .cmd = NL80211_CMD_START_P2P_DEVICE,
9508 .doit = nl80211_start_p2p_device,
9509 .policy = nl80211_policy,
9510 .flags = GENL_ADMIN_PERM,
9511 .internal_flags = NL80211_FLAG_NEED_WDEV |
9512 NL80211_FLAG_NEED_RTNL,
9513 },
9514 {
9515 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9516 .doit = nl80211_stop_p2p_device,
9517 .policy = nl80211_policy,
9518 .flags = GENL_ADMIN_PERM,
9519 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9520 NL80211_FLAG_NEED_RTNL,
9521 },
9522 {
9523 .cmd = NL80211_CMD_SET_MCAST_RATE,
9524 .doit = nl80211_set_mcast_rate,
9525 .policy = nl80211_policy,
9526 .flags = GENL_ADMIN_PERM,
9527 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9528 NL80211_FLAG_NEED_RTNL,
9529 },
9530 {
9531 .cmd = NL80211_CMD_SET_MAC_ACL,
9532 .doit = nl80211_set_mac_acl,
9533 .policy = nl80211_policy,
9534 .flags = GENL_ADMIN_PERM,
9535 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9536 NL80211_FLAG_NEED_RTNL,
9537 },
9538 {
9539 .cmd = NL80211_CMD_RADAR_DETECT,
9540 .doit = nl80211_start_radar_detection,
9541 .policy = nl80211_policy,
9542 .flags = GENL_ADMIN_PERM,
9543 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9544 NL80211_FLAG_NEED_RTNL,
9545 },
9546 {
9547 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9548 .doit = nl80211_get_protocol_features,
9549 .policy = nl80211_policy,
9550 },
9551 {
9552 .cmd = NL80211_CMD_UPDATE_FT_IES,
9553 .doit = nl80211_update_ft_ies,
9554 .policy = nl80211_policy,
9555 .flags = GENL_ADMIN_PERM,
9556 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9557 NL80211_FLAG_NEED_RTNL,
9558 },
9559 {
9560 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9561 .doit = nl80211_crit_protocol_start,
9562 .policy = nl80211_policy,
9563 .flags = GENL_ADMIN_PERM,
9564 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9565 NL80211_FLAG_NEED_RTNL,
9566 },
9567 {
9568 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9569 .doit = nl80211_crit_protocol_stop,
9570 .policy = nl80211_policy,
9571 .flags = GENL_ADMIN_PERM,
9572 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9573 NL80211_FLAG_NEED_RTNL,
9574 },
9575 {
9576 .cmd = NL80211_CMD_GET_COALESCE,
9577 .doit = nl80211_get_coalesce,
9578 .policy = nl80211_policy,
9579 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9580 NL80211_FLAG_NEED_RTNL,
9581 },
9582 {
9583 .cmd = NL80211_CMD_SET_COALESCE,
9584 .doit = nl80211_set_coalesce,
9585 .policy = nl80211_policy,
9586 .flags = GENL_ADMIN_PERM,
9587 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9588 NL80211_FLAG_NEED_RTNL,
9589 },
9590 {
9591 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9592 .doit = nl80211_channel_switch,
9593 .policy = nl80211_policy,
9594 .flags = GENL_ADMIN_PERM,
9595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9596 NL80211_FLAG_NEED_RTNL,
9597 },
9598 };
9599
9600 /* notification functions */
9601
9602 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9603 {
9604 struct sk_buff *msg;
9605 struct nl80211_dump_wiphy_state state = {};
9606
9607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9608 if (!msg)
9609 return;
9610
9611 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9612 nlmsg_free(msg);
9613 return;
9614 }
9615
9616 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9617 NL80211_MCGRP_CONFIG, GFP_KERNEL);
9618 }
9619
9620 static int nl80211_add_scan_req(struct sk_buff *msg,
9621 struct cfg80211_registered_device *rdev)
9622 {
9623 struct cfg80211_scan_request *req = rdev->scan_req;
9624 struct nlattr *nest;
9625 int i;
9626
9627 if (WARN_ON(!req))
9628 return 0;
9629
9630 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9631 if (!nest)
9632 goto nla_put_failure;
9633 for (i = 0; i < req->n_ssids; i++) {
9634 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9635 goto nla_put_failure;
9636 }
9637 nla_nest_end(msg, nest);
9638
9639 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9640 if (!nest)
9641 goto nla_put_failure;
9642 for (i = 0; i < req->n_channels; i++) {
9643 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9644 goto nla_put_failure;
9645 }
9646 nla_nest_end(msg, nest);
9647
9648 if (req->ie &&
9649 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9650 goto nla_put_failure;
9651
9652 if (req->flags)
9653 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9654
9655 return 0;
9656 nla_put_failure:
9657 return -ENOBUFS;
9658 }
9659
9660 static int nl80211_send_scan_msg(struct sk_buff *msg,
9661 struct cfg80211_registered_device *rdev,
9662 struct wireless_dev *wdev,
9663 u32 portid, u32 seq, int flags,
9664 u32 cmd)
9665 {
9666 void *hdr;
9667
9668 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9669 if (!hdr)
9670 return -1;
9671
9672 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9673 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9674 wdev->netdev->ifindex)) ||
9675 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9676 goto nla_put_failure;
9677
9678 /* ignore errors and send incomplete event anyway */
9679 nl80211_add_scan_req(msg, rdev);
9680
9681 return genlmsg_end(msg, hdr);
9682
9683 nla_put_failure:
9684 genlmsg_cancel(msg, hdr);
9685 return -EMSGSIZE;
9686 }
9687
9688 static int
9689 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9690 struct cfg80211_registered_device *rdev,
9691 struct net_device *netdev,
9692 u32 portid, u32 seq, int flags, u32 cmd)
9693 {
9694 void *hdr;
9695
9696 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9697 if (!hdr)
9698 return -1;
9699
9700 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9701 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9702 goto nla_put_failure;
9703
9704 return genlmsg_end(msg, hdr);
9705
9706 nla_put_failure:
9707 genlmsg_cancel(msg, hdr);
9708 return -EMSGSIZE;
9709 }
9710
9711 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9712 struct wireless_dev *wdev)
9713 {
9714 struct sk_buff *msg;
9715
9716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9717 if (!msg)
9718 return;
9719
9720 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9721 NL80211_CMD_TRIGGER_SCAN) < 0) {
9722 nlmsg_free(msg);
9723 return;
9724 }
9725
9726 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9727 NL80211_MCGRP_SCAN, GFP_KERNEL);
9728 }
9729
9730 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9731 struct wireless_dev *wdev)
9732 {
9733 struct sk_buff *msg;
9734
9735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9736 if (!msg)
9737 return;
9738
9739 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9740 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9741 nlmsg_free(msg);
9742 return;
9743 }
9744
9745 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9746 NL80211_MCGRP_SCAN, GFP_KERNEL);
9747 }
9748
9749 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9750 struct wireless_dev *wdev)
9751 {
9752 struct sk_buff *msg;
9753
9754 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9755 if (!msg)
9756 return;
9757
9758 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9759 NL80211_CMD_SCAN_ABORTED) < 0) {
9760 nlmsg_free(msg);
9761 return;
9762 }
9763
9764 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9765 NL80211_MCGRP_SCAN, GFP_KERNEL);
9766 }
9767
9768 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9769 struct net_device *netdev)
9770 {
9771 struct sk_buff *msg;
9772
9773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9774 if (!msg)
9775 return;
9776
9777 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9778 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9779 nlmsg_free(msg);
9780 return;
9781 }
9782
9783 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9784 NL80211_MCGRP_SCAN, GFP_KERNEL);
9785 }
9786
9787 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9788 struct net_device *netdev, u32 cmd)
9789 {
9790 struct sk_buff *msg;
9791
9792 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9793 if (!msg)
9794 return;
9795
9796 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9797 nlmsg_free(msg);
9798 return;
9799 }
9800
9801 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9802 NL80211_MCGRP_SCAN, GFP_KERNEL);
9803 }
9804
9805 /*
9806 * This can happen on global regulatory changes or device specific settings
9807 * based on custom world regulatory domains.
9808 */
9809 void nl80211_send_reg_change_event(struct regulatory_request *request)
9810 {
9811 struct sk_buff *msg;
9812 void *hdr;
9813
9814 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9815 if (!msg)
9816 return;
9817
9818 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9819 if (!hdr) {
9820 nlmsg_free(msg);
9821 return;
9822 }
9823
9824 /* Userspace can always count this one always being set */
9825 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9826 goto nla_put_failure;
9827
9828 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9829 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9830 NL80211_REGDOM_TYPE_WORLD))
9831 goto nla_put_failure;
9832 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9833 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9834 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9835 goto nla_put_failure;
9836 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9837 request->intersect) {
9838 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9839 NL80211_REGDOM_TYPE_INTERSECTION))
9840 goto nla_put_failure;
9841 } else {
9842 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9843 NL80211_REGDOM_TYPE_COUNTRY) ||
9844 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9845 request->alpha2))
9846 goto nla_put_failure;
9847 }
9848
9849 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9850 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9851 goto nla_put_failure;
9852
9853 genlmsg_end(msg, hdr);
9854
9855 rcu_read_lock();
9856 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
9857 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
9858 rcu_read_unlock();
9859
9860 return;
9861
9862 nla_put_failure:
9863 genlmsg_cancel(msg, hdr);
9864 nlmsg_free(msg);
9865 }
9866
9867 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9868 struct net_device *netdev,
9869 const u8 *buf, size_t len,
9870 enum nl80211_commands cmd, gfp_t gfp)
9871 {
9872 struct sk_buff *msg;
9873 void *hdr;
9874
9875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9876 if (!msg)
9877 return;
9878
9879 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9880 if (!hdr) {
9881 nlmsg_free(msg);
9882 return;
9883 }
9884
9885 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9886 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9887 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9888 goto nla_put_failure;
9889
9890 genlmsg_end(msg, hdr);
9891
9892 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9893 NL80211_MCGRP_MLME, gfp);
9894 return;
9895
9896 nla_put_failure:
9897 genlmsg_cancel(msg, hdr);
9898 nlmsg_free(msg);
9899 }
9900
9901 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9902 struct net_device *netdev, const u8 *buf,
9903 size_t len, gfp_t gfp)
9904 {
9905 nl80211_send_mlme_event(rdev, netdev, buf, len,
9906 NL80211_CMD_AUTHENTICATE, gfp);
9907 }
9908
9909 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9910 struct net_device *netdev, const u8 *buf,
9911 size_t len, gfp_t gfp)
9912 {
9913 nl80211_send_mlme_event(rdev, netdev, buf, len,
9914 NL80211_CMD_ASSOCIATE, gfp);
9915 }
9916
9917 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9918 struct net_device *netdev, const u8 *buf,
9919 size_t len, gfp_t gfp)
9920 {
9921 nl80211_send_mlme_event(rdev, netdev, buf, len,
9922 NL80211_CMD_DEAUTHENTICATE, gfp);
9923 }
9924
9925 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9926 struct net_device *netdev, const u8 *buf,
9927 size_t len, gfp_t gfp)
9928 {
9929 nl80211_send_mlme_event(rdev, netdev, buf, len,
9930 NL80211_CMD_DISASSOCIATE, gfp);
9931 }
9932
9933 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9934 size_t len)
9935 {
9936 struct wireless_dev *wdev = dev->ieee80211_ptr;
9937 struct wiphy *wiphy = wdev->wiphy;
9938 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9939 const struct ieee80211_mgmt *mgmt = (void *)buf;
9940 u32 cmd;
9941
9942 if (WARN_ON(len < 2))
9943 return;
9944
9945 if (ieee80211_is_deauth(mgmt->frame_control))
9946 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9947 else
9948 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9949
9950 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9951 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9952 }
9953 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9954
9955 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9956 struct net_device *netdev, int cmd,
9957 const u8 *addr, gfp_t gfp)
9958 {
9959 struct sk_buff *msg;
9960 void *hdr;
9961
9962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9963 if (!msg)
9964 return;
9965
9966 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9967 if (!hdr) {
9968 nlmsg_free(msg);
9969 return;
9970 }
9971
9972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9973 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9974 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9975 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9976 goto nla_put_failure;
9977
9978 genlmsg_end(msg, hdr);
9979
9980 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9981 NL80211_MCGRP_MLME, gfp);
9982 return;
9983
9984 nla_put_failure:
9985 genlmsg_cancel(msg, hdr);
9986 nlmsg_free(msg);
9987 }
9988
9989 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9990 struct net_device *netdev, const u8 *addr,
9991 gfp_t gfp)
9992 {
9993 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9994 addr, gfp);
9995 }
9996
9997 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9998 struct net_device *netdev, const u8 *addr,
9999 gfp_t gfp)
10000 {
10001 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10002 addr, gfp);
10003 }
10004
10005 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10006 struct net_device *netdev, const u8 *bssid,
10007 const u8 *req_ie, size_t req_ie_len,
10008 const u8 *resp_ie, size_t resp_ie_len,
10009 u16 status, gfp_t gfp)
10010 {
10011 struct sk_buff *msg;
10012 void *hdr;
10013
10014 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10015 if (!msg)
10016 return;
10017
10018 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10019 if (!hdr) {
10020 nlmsg_free(msg);
10021 return;
10022 }
10023
10024 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10025 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10026 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10027 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10028 (req_ie &&
10029 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10030 (resp_ie &&
10031 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10032 goto nla_put_failure;
10033
10034 genlmsg_end(msg, hdr);
10035
10036 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10037 NL80211_MCGRP_MLME, gfp);
10038 return;
10039
10040 nla_put_failure:
10041 genlmsg_cancel(msg, hdr);
10042 nlmsg_free(msg);
10043
10044 }
10045
10046 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10047 struct net_device *netdev, const u8 *bssid,
10048 const u8 *req_ie, size_t req_ie_len,
10049 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10050 {
10051 struct sk_buff *msg;
10052 void *hdr;
10053
10054 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10055 if (!msg)
10056 return;
10057
10058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10059 if (!hdr) {
10060 nlmsg_free(msg);
10061 return;
10062 }
10063
10064 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10065 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10066 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10067 (req_ie &&
10068 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10069 (resp_ie &&
10070 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10071 goto nla_put_failure;
10072
10073 genlmsg_end(msg, hdr);
10074
10075 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10076 NL80211_MCGRP_MLME, gfp);
10077 return;
10078
10079 nla_put_failure:
10080 genlmsg_cancel(msg, hdr);
10081 nlmsg_free(msg);
10082
10083 }
10084
10085 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10086 struct net_device *netdev, u16 reason,
10087 const u8 *ie, size_t ie_len, bool from_ap)
10088 {
10089 struct sk_buff *msg;
10090 void *hdr;
10091
10092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10093 if (!msg)
10094 return;
10095
10096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10097 if (!hdr) {
10098 nlmsg_free(msg);
10099 return;
10100 }
10101
10102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10103 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10104 (from_ap && reason &&
10105 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10106 (from_ap &&
10107 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10108 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10109 goto nla_put_failure;
10110
10111 genlmsg_end(msg, hdr);
10112
10113 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10114 NL80211_MCGRP_MLME, GFP_KERNEL);
10115 return;
10116
10117 nla_put_failure:
10118 genlmsg_cancel(msg, hdr);
10119 nlmsg_free(msg);
10120
10121 }
10122
10123 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10124 struct net_device *netdev, const u8 *bssid,
10125 gfp_t gfp)
10126 {
10127 struct sk_buff *msg;
10128 void *hdr;
10129
10130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10131 if (!msg)
10132 return;
10133
10134 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10135 if (!hdr) {
10136 nlmsg_free(msg);
10137 return;
10138 }
10139
10140 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10141 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10142 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10143 goto nla_put_failure;
10144
10145 genlmsg_end(msg, hdr);
10146
10147 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10148 NL80211_MCGRP_MLME, gfp);
10149 return;
10150
10151 nla_put_failure:
10152 genlmsg_cancel(msg, hdr);
10153 nlmsg_free(msg);
10154 }
10155
10156 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10157 const u8* ie, u8 ie_len, gfp_t gfp)
10158 {
10159 struct wireless_dev *wdev = dev->ieee80211_ptr;
10160 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10161 struct sk_buff *msg;
10162 void *hdr;
10163
10164 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10165 return;
10166
10167 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10168
10169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10170 if (!msg)
10171 return;
10172
10173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10174 if (!hdr) {
10175 nlmsg_free(msg);
10176 return;
10177 }
10178
10179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10180 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10181 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10182 (ie_len && ie &&
10183 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10184 goto nla_put_failure;
10185
10186 genlmsg_end(msg, hdr);
10187
10188 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10189 NL80211_MCGRP_MLME, gfp);
10190 return;
10191
10192 nla_put_failure:
10193 genlmsg_cancel(msg, hdr);
10194 nlmsg_free(msg);
10195 }
10196 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10197
10198 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10199 struct net_device *netdev, const u8 *addr,
10200 enum nl80211_key_type key_type, int key_id,
10201 const u8 *tsc, gfp_t gfp)
10202 {
10203 struct sk_buff *msg;
10204 void *hdr;
10205
10206 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10207 if (!msg)
10208 return;
10209
10210 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10211 if (!hdr) {
10212 nlmsg_free(msg);
10213 return;
10214 }
10215
10216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10217 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10218 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10219 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10220 (key_id != -1 &&
10221 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10222 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10223 goto nla_put_failure;
10224
10225 genlmsg_end(msg, hdr);
10226
10227 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10228 NL80211_MCGRP_MLME, gfp);
10229 return;
10230
10231 nla_put_failure:
10232 genlmsg_cancel(msg, hdr);
10233 nlmsg_free(msg);
10234 }
10235
10236 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10237 struct ieee80211_channel *channel_before,
10238 struct ieee80211_channel *channel_after)
10239 {
10240 struct sk_buff *msg;
10241 void *hdr;
10242 struct nlattr *nl_freq;
10243
10244 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10245 if (!msg)
10246 return;
10247
10248 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10249 if (!hdr) {
10250 nlmsg_free(msg);
10251 return;
10252 }
10253
10254 /*
10255 * Since we are applying the beacon hint to a wiphy we know its
10256 * wiphy_idx is valid
10257 */
10258 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10259 goto nla_put_failure;
10260
10261 /* Before */
10262 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10263 if (!nl_freq)
10264 goto nla_put_failure;
10265 if (nl80211_msg_put_channel(msg, channel_before, false))
10266 goto nla_put_failure;
10267 nla_nest_end(msg, nl_freq);
10268
10269 /* After */
10270 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10271 if (!nl_freq)
10272 goto nla_put_failure;
10273 if (nl80211_msg_put_channel(msg, channel_after, false))
10274 goto nla_put_failure;
10275 nla_nest_end(msg, nl_freq);
10276
10277 genlmsg_end(msg, hdr);
10278
10279 rcu_read_lock();
10280 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10281 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10282 rcu_read_unlock();
10283
10284 return;
10285
10286 nla_put_failure:
10287 genlmsg_cancel(msg, hdr);
10288 nlmsg_free(msg);
10289 }
10290
10291 static void nl80211_send_remain_on_chan_event(
10292 int cmd, struct cfg80211_registered_device *rdev,
10293 struct wireless_dev *wdev, u64 cookie,
10294 struct ieee80211_channel *chan,
10295 unsigned int duration, gfp_t gfp)
10296 {
10297 struct sk_buff *msg;
10298 void *hdr;
10299
10300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10301 if (!msg)
10302 return;
10303
10304 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10305 if (!hdr) {
10306 nlmsg_free(msg);
10307 return;
10308 }
10309
10310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10311 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10312 wdev->netdev->ifindex)) ||
10313 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10314 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10315 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10316 NL80211_CHAN_NO_HT) ||
10317 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10318 goto nla_put_failure;
10319
10320 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10321 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10322 goto nla_put_failure;
10323
10324 genlmsg_end(msg, hdr);
10325
10326 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10327 NL80211_MCGRP_MLME, gfp);
10328 return;
10329
10330 nla_put_failure:
10331 genlmsg_cancel(msg, hdr);
10332 nlmsg_free(msg);
10333 }
10334
10335 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10336 struct ieee80211_channel *chan,
10337 unsigned int duration, gfp_t gfp)
10338 {
10339 struct wiphy *wiphy = wdev->wiphy;
10340 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10341
10342 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10343 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10344 rdev, wdev, cookie, chan,
10345 duration, gfp);
10346 }
10347 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10348
10349 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10350 struct ieee80211_channel *chan,
10351 gfp_t gfp)
10352 {
10353 struct wiphy *wiphy = wdev->wiphy;
10354 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10355
10356 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10357 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10358 rdev, wdev, cookie, chan, 0, gfp);
10359 }
10360 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10361
10362 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10363 struct station_info *sinfo, gfp_t gfp)
10364 {
10365 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10366 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10367 struct sk_buff *msg;
10368
10369 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10370
10371 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10372 if (!msg)
10373 return;
10374
10375 if (nl80211_send_station(msg, 0, 0, 0,
10376 rdev, dev, mac_addr, sinfo) < 0) {
10377 nlmsg_free(msg);
10378 return;
10379 }
10380
10381 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10382 NL80211_MCGRP_MLME, gfp);
10383 }
10384 EXPORT_SYMBOL(cfg80211_new_sta);
10385
10386 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10387 {
10388 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10389 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10390 struct sk_buff *msg;
10391 void *hdr;
10392
10393 trace_cfg80211_del_sta(dev, mac_addr);
10394
10395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10396 if (!msg)
10397 return;
10398
10399 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10400 if (!hdr) {
10401 nlmsg_free(msg);
10402 return;
10403 }
10404
10405 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10406 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10407 goto nla_put_failure;
10408
10409 genlmsg_end(msg, hdr);
10410
10411 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10412 NL80211_MCGRP_MLME, gfp);
10413 return;
10414
10415 nla_put_failure:
10416 genlmsg_cancel(msg, hdr);
10417 nlmsg_free(msg);
10418 }
10419 EXPORT_SYMBOL(cfg80211_del_sta);
10420
10421 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10422 enum nl80211_connect_failed_reason reason,
10423 gfp_t gfp)
10424 {
10425 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10426 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10427 struct sk_buff *msg;
10428 void *hdr;
10429
10430 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10431 if (!msg)
10432 return;
10433
10434 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10435 if (!hdr) {
10436 nlmsg_free(msg);
10437 return;
10438 }
10439
10440 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10441 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10442 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10443 goto nla_put_failure;
10444
10445 genlmsg_end(msg, hdr);
10446
10447 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10448 NL80211_MCGRP_MLME, gfp);
10449 return;
10450
10451 nla_put_failure:
10452 genlmsg_cancel(msg, hdr);
10453 nlmsg_free(msg);
10454 }
10455 EXPORT_SYMBOL(cfg80211_conn_failed);
10456
10457 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10458 const u8 *addr, gfp_t gfp)
10459 {
10460 struct wireless_dev *wdev = dev->ieee80211_ptr;
10461 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10462 struct sk_buff *msg;
10463 void *hdr;
10464 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10465
10466 if (!nlportid)
10467 return false;
10468
10469 msg = nlmsg_new(100, gfp);
10470 if (!msg)
10471 return true;
10472
10473 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10474 if (!hdr) {
10475 nlmsg_free(msg);
10476 return true;
10477 }
10478
10479 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10480 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10481 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10482 goto nla_put_failure;
10483
10484 genlmsg_end(msg, hdr);
10485 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10486 return true;
10487
10488 nla_put_failure:
10489 genlmsg_cancel(msg, hdr);
10490 nlmsg_free(msg);
10491 return true;
10492 }
10493
10494 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10495 const u8 *addr, gfp_t gfp)
10496 {
10497 struct wireless_dev *wdev = dev->ieee80211_ptr;
10498 bool ret;
10499
10500 trace_cfg80211_rx_spurious_frame(dev, addr);
10501
10502 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10503 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10504 trace_cfg80211_return_bool(false);
10505 return false;
10506 }
10507 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10508 addr, gfp);
10509 trace_cfg80211_return_bool(ret);
10510 return ret;
10511 }
10512 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10513
10514 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10515 const u8 *addr, gfp_t gfp)
10516 {
10517 struct wireless_dev *wdev = dev->ieee80211_ptr;
10518 bool ret;
10519
10520 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10521
10522 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10523 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10524 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10525 trace_cfg80211_return_bool(false);
10526 return false;
10527 }
10528 ret = __nl80211_unexpected_frame(dev,
10529 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10530 addr, gfp);
10531 trace_cfg80211_return_bool(ret);
10532 return ret;
10533 }
10534 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10535
10536 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10537 struct wireless_dev *wdev, u32 nlportid,
10538 int freq, int sig_dbm,
10539 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10540 {
10541 struct net_device *netdev = wdev->netdev;
10542 struct sk_buff *msg;
10543 void *hdr;
10544
10545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10546 if (!msg)
10547 return -ENOMEM;
10548
10549 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10550 if (!hdr) {
10551 nlmsg_free(msg);
10552 return -ENOMEM;
10553 }
10554
10555 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10556 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10557 netdev->ifindex)) ||
10558 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10559 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10560 (sig_dbm &&
10561 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10562 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10563 (flags &&
10564 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10565 goto nla_put_failure;
10566
10567 genlmsg_end(msg, hdr);
10568
10569 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10570
10571 nla_put_failure:
10572 genlmsg_cancel(msg, hdr);
10573 nlmsg_free(msg);
10574 return -ENOBUFS;
10575 }
10576
10577 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10578 const u8 *buf, size_t len, bool ack, gfp_t gfp)
10579 {
10580 struct wiphy *wiphy = wdev->wiphy;
10581 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10582 struct net_device *netdev = wdev->netdev;
10583 struct sk_buff *msg;
10584 void *hdr;
10585
10586 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10587
10588 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10589 if (!msg)
10590 return;
10591
10592 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10593 if (!hdr) {
10594 nlmsg_free(msg);
10595 return;
10596 }
10597
10598 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10599 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10600 netdev->ifindex)) ||
10601 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10602 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10603 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10604 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10605 goto nla_put_failure;
10606
10607 genlmsg_end(msg, hdr);
10608
10609 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10610 NL80211_MCGRP_MLME, gfp);
10611 return;
10612
10613 nla_put_failure:
10614 genlmsg_cancel(msg, hdr);
10615 nlmsg_free(msg);
10616 }
10617 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10618
10619 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10620 enum nl80211_cqm_rssi_threshold_event rssi_event,
10621 gfp_t gfp)
10622 {
10623 struct wireless_dev *wdev = dev->ieee80211_ptr;
10624 struct wiphy *wiphy = wdev->wiphy;
10625 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10626 struct sk_buff *msg;
10627 struct nlattr *pinfoattr;
10628 void *hdr;
10629
10630 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10631
10632 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10633 if (!msg)
10634 return;
10635
10636 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10637 if (!hdr) {
10638 nlmsg_free(msg);
10639 return;
10640 }
10641
10642 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10643 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10644 goto nla_put_failure;
10645
10646 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10647 if (!pinfoattr)
10648 goto nla_put_failure;
10649
10650 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10651 rssi_event))
10652 goto nla_put_failure;
10653
10654 nla_nest_end(msg, pinfoattr);
10655
10656 genlmsg_end(msg, hdr);
10657
10658 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10659 NL80211_MCGRP_MLME, gfp);
10660 return;
10661
10662 nla_put_failure:
10663 genlmsg_cancel(msg, hdr);
10664 nlmsg_free(msg);
10665 }
10666 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10667
10668 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10669 struct net_device *netdev, const u8 *bssid,
10670 const u8 *replay_ctr, gfp_t gfp)
10671 {
10672 struct sk_buff *msg;
10673 struct nlattr *rekey_attr;
10674 void *hdr;
10675
10676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10677 if (!msg)
10678 return;
10679
10680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10681 if (!hdr) {
10682 nlmsg_free(msg);
10683 return;
10684 }
10685
10686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10687 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10689 goto nla_put_failure;
10690
10691 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10692 if (!rekey_attr)
10693 goto nla_put_failure;
10694
10695 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10696 NL80211_REPLAY_CTR_LEN, replay_ctr))
10697 goto nla_put_failure;
10698
10699 nla_nest_end(msg, rekey_attr);
10700
10701 genlmsg_end(msg, hdr);
10702
10703 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10704 NL80211_MCGRP_MLME, gfp);
10705 return;
10706
10707 nla_put_failure:
10708 genlmsg_cancel(msg, hdr);
10709 nlmsg_free(msg);
10710 }
10711
10712 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10713 const u8 *replay_ctr, gfp_t gfp)
10714 {
10715 struct wireless_dev *wdev = dev->ieee80211_ptr;
10716 struct wiphy *wiphy = wdev->wiphy;
10717 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10718
10719 trace_cfg80211_gtk_rekey_notify(dev, bssid);
10720 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10721 }
10722 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10723
10724 static void
10725 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10726 struct net_device *netdev, int index,
10727 const u8 *bssid, bool preauth, gfp_t gfp)
10728 {
10729 struct sk_buff *msg;
10730 struct nlattr *attr;
10731 void *hdr;
10732
10733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10734 if (!msg)
10735 return;
10736
10737 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10738 if (!hdr) {
10739 nlmsg_free(msg);
10740 return;
10741 }
10742
10743 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10744 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10745 goto nla_put_failure;
10746
10747 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10748 if (!attr)
10749 goto nla_put_failure;
10750
10751 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10752 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10753 (preauth &&
10754 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10755 goto nla_put_failure;
10756
10757 nla_nest_end(msg, attr);
10758
10759 genlmsg_end(msg, hdr);
10760
10761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10762 NL80211_MCGRP_MLME, gfp);
10763 return;
10764
10765 nla_put_failure:
10766 genlmsg_cancel(msg, hdr);
10767 nlmsg_free(msg);
10768 }
10769
10770 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10771 const u8 *bssid, bool preauth, gfp_t gfp)
10772 {
10773 struct wireless_dev *wdev = dev->ieee80211_ptr;
10774 struct wiphy *wiphy = wdev->wiphy;
10775 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10776
10777 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10778 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10779 }
10780 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10781
10782 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10783 struct net_device *netdev,
10784 struct cfg80211_chan_def *chandef,
10785 gfp_t gfp)
10786 {
10787 struct sk_buff *msg;
10788 void *hdr;
10789
10790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10791 if (!msg)
10792 return;
10793
10794 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10795 if (!hdr) {
10796 nlmsg_free(msg);
10797 return;
10798 }
10799
10800 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10801 goto nla_put_failure;
10802
10803 if (nl80211_send_chandef(msg, chandef))
10804 goto nla_put_failure;
10805
10806 genlmsg_end(msg, hdr);
10807
10808 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10809 NL80211_MCGRP_MLME, gfp);
10810 return;
10811
10812 nla_put_failure:
10813 genlmsg_cancel(msg, hdr);
10814 nlmsg_free(msg);
10815 }
10816
10817 void cfg80211_ch_switch_notify(struct net_device *dev,
10818 struct cfg80211_chan_def *chandef)
10819 {
10820 struct wireless_dev *wdev = dev->ieee80211_ptr;
10821 struct wiphy *wiphy = wdev->wiphy;
10822 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10823
10824 ASSERT_WDEV_LOCK(wdev);
10825
10826 trace_cfg80211_ch_switch_notify(dev, chandef);
10827
10828 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10829 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10830 wdev->iftype != NL80211_IFTYPE_ADHOC &&
10831 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10832 return;
10833
10834 wdev->channel = chandef->chan;
10835 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10836 }
10837 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10838
10839 void cfg80211_cqm_txe_notify(struct net_device *dev,
10840 const u8 *peer, u32 num_packets,
10841 u32 rate, u32 intvl, gfp_t gfp)
10842 {
10843 struct wireless_dev *wdev = dev->ieee80211_ptr;
10844 struct wiphy *wiphy = wdev->wiphy;
10845 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10846 struct sk_buff *msg;
10847 struct nlattr *pinfoattr;
10848 void *hdr;
10849
10850 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10851 if (!msg)
10852 return;
10853
10854 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10855 if (!hdr) {
10856 nlmsg_free(msg);
10857 return;
10858 }
10859
10860 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10861 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10862 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10863 goto nla_put_failure;
10864
10865 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10866 if (!pinfoattr)
10867 goto nla_put_failure;
10868
10869 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10870 goto nla_put_failure;
10871
10872 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10873 goto nla_put_failure;
10874
10875 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10876 goto nla_put_failure;
10877
10878 nla_nest_end(msg, pinfoattr);
10879
10880 genlmsg_end(msg, hdr);
10881
10882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10883 NL80211_MCGRP_MLME, gfp);
10884 return;
10885
10886 nla_put_failure:
10887 genlmsg_cancel(msg, hdr);
10888 nlmsg_free(msg);
10889 }
10890 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10891
10892 void
10893 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10894 const struct cfg80211_chan_def *chandef,
10895 enum nl80211_radar_event event,
10896 struct net_device *netdev, gfp_t gfp)
10897 {
10898 struct sk_buff *msg;
10899 void *hdr;
10900
10901 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10902 if (!msg)
10903 return;
10904
10905 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10906 if (!hdr) {
10907 nlmsg_free(msg);
10908 return;
10909 }
10910
10911 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10912 goto nla_put_failure;
10913
10914 /* NOP and radar events don't need a netdev parameter */
10915 if (netdev) {
10916 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10917
10918 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10919 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10920 goto nla_put_failure;
10921 }
10922
10923 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10924 goto nla_put_failure;
10925
10926 if (nl80211_send_chandef(msg, chandef))
10927 goto nla_put_failure;
10928
10929 genlmsg_end(msg, hdr);
10930
10931 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10932 NL80211_MCGRP_MLME, gfp);
10933 return;
10934
10935 nla_put_failure:
10936 genlmsg_cancel(msg, hdr);
10937 nlmsg_free(msg);
10938 }
10939
10940 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10941 const u8 *peer, u32 num_packets, gfp_t gfp)
10942 {
10943 struct wireless_dev *wdev = dev->ieee80211_ptr;
10944 struct wiphy *wiphy = wdev->wiphy;
10945 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10946 struct sk_buff *msg;
10947 struct nlattr *pinfoattr;
10948 void *hdr;
10949
10950 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10951
10952 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10953 if (!msg)
10954 return;
10955
10956 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10957 if (!hdr) {
10958 nlmsg_free(msg);
10959 return;
10960 }
10961
10962 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10963 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10964 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10965 goto nla_put_failure;
10966
10967 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10968 if (!pinfoattr)
10969 goto nla_put_failure;
10970
10971 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10972 goto nla_put_failure;
10973
10974 nla_nest_end(msg, pinfoattr);
10975
10976 genlmsg_end(msg, hdr);
10977
10978 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10979 NL80211_MCGRP_MLME, gfp);
10980 return;
10981
10982 nla_put_failure:
10983 genlmsg_cancel(msg, hdr);
10984 nlmsg_free(msg);
10985 }
10986 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10987
10988 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10989 u64 cookie, bool acked, gfp_t gfp)
10990 {
10991 struct wireless_dev *wdev = dev->ieee80211_ptr;
10992 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10993 struct sk_buff *msg;
10994 void *hdr;
10995
10996 trace_cfg80211_probe_status(dev, addr, cookie, acked);
10997
10998 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10999
11000 if (!msg)
11001 return;
11002
11003 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11004 if (!hdr) {
11005 nlmsg_free(msg);
11006 return;
11007 }
11008
11009 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11010 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11011 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11012 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11013 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11014 goto nla_put_failure;
11015
11016 genlmsg_end(msg, hdr);
11017
11018 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11019 NL80211_MCGRP_MLME, gfp);
11020 return;
11021
11022 nla_put_failure:
11023 genlmsg_cancel(msg, hdr);
11024 nlmsg_free(msg);
11025 }
11026 EXPORT_SYMBOL(cfg80211_probe_status);
11027
11028 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11029 const u8 *frame, size_t len,
11030 int freq, int sig_dbm)
11031 {
11032 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11033 struct sk_buff *msg;
11034 void *hdr;
11035 struct cfg80211_beacon_registration *reg;
11036
11037 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11038
11039 spin_lock_bh(&rdev->beacon_registrations_lock);
11040 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11041 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11042 if (!msg) {
11043 spin_unlock_bh(&rdev->beacon_registrations_lock);
11044 return;
11045 }
11046
11047 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11048 if (!hdr)
11049 goto nla_put_failure;
11050
11051 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11052 (freq &&
11053 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11054 (sig_dbm &&
11055 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11056 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11057 goto nla_put_failure;
11058
11059 genlmsg_end(msg, hdr);
11060
11061 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11062 }
11063 spin_unlock_bh(&rdev->beacon_registrations_lock);
11064 return;
11065
11066 nla_put_failure:
11067 spin_unlock_bh(&rdev->beacon_registrations_lock);
11068 if (hdr)
11069 genlmsg_cancel(msg, hdr);
11070 nlmsg_free(msg);
11071 }
11072 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11073
11074 #ifdef CONFIG_PM
11075 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11076 struct cfg80211_wowlan_wakeup *wakeup,
11077 gfp_t gfp)
11078 {
11079 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11080 struct sk_buff *msg;
11081 void *hdr;
11082 int size = 200;
11083
11084 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11085
11086 if (wakeup)
11087 size += wakeup->packet_present_len;
11088
11089 msg = nlmsg_new(size, gfp);
11090 if (!msg)
11091 return;
11092
11093 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11094 if (!hdr)
11095 goto free_msg;
11096
11097 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11098 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11099 goto free_msg;
11100
11101 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11102 wdev->netdev->ifindex))
11103 goto free_msg;
11104
11105 if (wakeup) {
11106 struct nlattr *reasons;
11107
11108 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11109
11110 if (wakeup->disconnect &&
11111 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11112 goto free_msg;
11113 if (wakeup->magic_pkt &&
11114 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11115 goto free_msg;
11116 if (wakeup->gtk_rekey_failure &&
11117 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11118 goto free_msg;
11119 if (wakeup->eap_identity_req &&
11120 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11121 goto free_msg;
11122 if (wakeup->four_way_handshake &&
11123 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11124 goto free_msg;
11125 if (wakeup->rfkill_release &&
11126 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11127 goto free_msg;
11128
11129 if (wakeup->pattern_idx >= 0 &&
11130 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11131 wakeup->pattern_idx))
11132 goto free_msg;
11133
11134 if (wakeup->tcp_match)
11135 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11136
11137 if (wakeup->tcp_connlost)
11138 nla_put_flag(msg,
11139 NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11140
11141 if (wakeup->tcp_nomoretokens)
11142 nla_put_flag(msg,
11143 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11144
11145 if (wakeup->packet) {
11146 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11147 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11148
11149 if (!wakeup->packet_80211) {
11150 pkt_attr =
11151 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11152 len_attr =
11153 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11154 }
11155
11156 if (wakeup->packet_len &&
11157 nla_put_u32(msg, len_attr, wakeup->packet_len))
11158 goto free_msg;
11159
11160 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11161 wakeup->packet))
11162 goto free_msg;
11163 }
11164
11165 nla_nest_end(msg, reasons);
11166 }
11167
11168 genlmsg_end(msg, hdr);
11169
11170 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11171 NL80211_MCGRP_MLME, gfp);
11172 return;
11173
11174 free_msg:
11175 nlmsg_free(msg);
11176 }
11177 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11178 #endif
11179
11180 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11181 enum nl80211_tdls_operation oper,
11182 u16 reason_code, gfp_t gfp)
11183 {
11184 struct wireless_dev *wdev = dev->ieee80211_ptr;
11185 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11186 struct sk_buff *msg;
11187 void *hdr;
11188
11189 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11190 reason_code);
11191
11192 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11193 if (!msg)
11194 return;
11195
11196 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11197 if (!hdr) {
11198 nlmsg_free(msg);
11199 return;
11200 }
11201
11202 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11203 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11204 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11205 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11206 (reason_code > 0 &&
11207 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11208 goto nla_put_failure;
11209
11210 genlmsg_end(msg, hdr);
11211
11212 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11213 NL80211_MCGRP_MLME, gfp);
11214 return;
11215
11216 nla_put_failure:
11217 genlmsg_cancel(msg, hdr);
11218 nlmsg_free(msg);
11219 }
11220 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11221
11222 static int nl80211_netlink_notify(struct notifier_block * nb,
11223 unsigned long state,
11224 void *_notify)
11225 {
11226 struct netlink_notify *notify = _notify;
11227 struct cfg80211_registered_device *rdev;
11228 struct wireless_dev *wdev;
11229 struct cfg80211_beacon_registration *reg, *tmp;
11230
11231 if (state != NETLINK_URELEASE)
11232 return NOTIFY_DONE;
11233
11234 rcu_read_lock();
11235
11236 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11237 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11238 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11239
11240 spin_lock_bh(&rdev->beacon_registrations_lock);
11241 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11242 list) {
11243 if (reg->nlportid == notify->portid) {
11244 list_del(&reg->list);
11245 kfree(reg);
11246 break;
11247 }
11248 }
11249 spin_unlock_bh(&rdev->beacon_registrations_lock);
11250 }
11251
11252 rcu_read_unlock();
11253
11254 return NOTIFY_DONE;
11255 }
11256
11257 static struct notifier_block nl80211_netlink_notifier = {
11258 .notifier_call = nl80211_netlink_notify,
11259 };
11260
11261 void cfg80211_ft_event(struct net_device *netdev,
11262 struct cfg80211_ft_event_params *ft_event)
11263 {
11264 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11265 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11266 struct sk_buff *msg;
11267 void *hdr;
11268
11269 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11270
11271 if (!ft_event->target_ap)
11272 return;
11273
11274 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11275 if (!msg)
11276 return;
11277
11278 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11279 if (!hdr) {
11280 nlmsg_free(msg);
11281 return;
11282 }
11283
11284 nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11285 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11286 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11287 if (ft_event->ies)
11288 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11289 if (ft_event->ric_ies)
11290 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11291 ft_event->ric_ies);
11292
11293 genlmsg_end(msg, hdr);
11294
11295 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11296 NL80211_MCGRP_MLME, GFP_KERNEL);
11297 }
11298 EXPORT_SYMBOL(cfg80211_ft_event);
11299
11300 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11301 {
11302 struct cfg80211_registered_device *rdev;
11303 struct sk_buff *msg;
11304 void *hdr;
11305 u32 nlportid;
11306
11307 rdev = wiphy_to_dev(wdev->wiphy);
11308 if (!rdev->crit_proto_nlportid)
11309 return;
11310
11311 nlportid = rdev->crit_proto_nlportid;
11312 rdev->crit_proto_nlportid = 0;
11313
11314 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11315 if (!msg)
11316 return;
11317
11318 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11319 if (!hdr)
11320 goto nla_put_failure;
11321
11322 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11323 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11324 goto nla_put_failure;
11325
11326 genlmsg_end(msg, hdr);
11327
11328 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11329 return;
11330
11331 nla_put_failure:
11332 if (hdr)
11333 genlmsg_cancel(msg, hdr);
11334 nlmsg_free(msg);
11335
11336 }
11337 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11338
11339 /* initialisation/exit functions */
11340
11341 int nl80211_init(void)
11342 {
11343 int err;
11344
11345 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11346 nl80211_mcgrps);
11347 if (err)
11348 return err;
11349
11350 err = netlink_register_notifier(&nl80211_netlink_notifier);
11351 if (err)
11352 goto err_out;
11353
11354 return 0;
11355 err_out:
11356 genl_unregister_family(&nl80211_fam);
11357 return err;
11358 }
11359
11360 void nl80211_exit(void)
11361 {
11362 netlink_unregister_notifier(&nl80211_netlink_notifier);
11363 genl_unregister_family(&nl80211_fam);
11364 }
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