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Merge tag 'trace-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux...
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 */
7
8 #include <linux/if.h>
9 #include <linux/module.h>
10 #include <linux/err.h>
11 #include <linux/slab.h>
12 #include <linux/list.h>
13 #include <linux/if_ether.h>
14 #include <linux/ieee80211.h>
15 #include <linux/nl80211.h>
16 #include <linux/rtnetlink.h>
17 #include <linux/netlink.h>
18 #include <linux/etherdevice.h>
19 #include <net/net_namespace.h>
20 #include <net/genetlink.h>
21 #include <net/cfg80211.h>
22 #include <net/sock.h>
23 #include <net/inet_connection_sock.h>
24 #include "core.h"
25 #include "nl80211.h"
26 #include "reg.h"
27 #include "rdev-ops.h"
28
29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
30 struct genl_info *info,
31 struct cfg80211_crypto_settings *settings,
32 int cipher_limit);
33
34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
35 struct genl_info *info);
36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
37 struct genl_info *info);
38
39 /* the netlink family */
40 static struct genl_family nl80211_fam = {
41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
42 .name = NL80211_GENL_NAME, /* have users key off the name instead */
43 .hdrsize = 0, /* no private header */
44 .version = 1, /* no particular meaning now */
45 .maxattr = NL80211_ATTR_MAX,
46 .netnsok = true,
47 .pre_doit = nl80211_pre_doit,
48 .post_doit = nl80211_post_doit,
49 };
50
51 /* multicast groups */
52 enum nl80211_multicast_groups {
53 NL80211_MCGRP_CONFIG,
54 NL80211_MCGRP_SCAN,
55 NL80211_MCGRP_REGULATORY,
56 NL80211_MCGRP_MLME,
57 NL80211_MCGRP_VENDOR,
58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
59 };
60
61 static const struct genl_multicast_group nl80211_mcgrps[] = {
62 [NL80211_MCGRP_CONFIG] = { .name = "config", },
63 [NL80211_MCGRP_SCAN] = { .name = "scan", },
64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
65 [NL80211_MCGRP_MLME] = { .name = "mlme", },
66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
67 #ifdef CONFIG_NL80211_TESTMODE
68 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
69 #endif
70 };
71
72 /* returns ERR_PTR values */
73 static struct wireless_dev *
74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
75 {
76 struct cfg80211_registered_device *rdev;
77 struct wireless_dev *result = NULL;
78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
80 u64 wdev_id;
81 int wiphy_idx = -1;
82 int ifidx = -1;
83
84 ASSERT_RTNL();
85
86 if (!have_ifidx && !have_wdev_id)
87 return ERR_PTR(-EINVAL);
88
89 if (have_ifidx)
90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
91 if (have_wdev_id) {
92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
93 wiphy_idx = wdev_id >> 32;
94 }
95
96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
97 struct wireless_dev *wdev;
98
99 if (wiphy_net(&rdev->wiphy) != netns)
100 continue;
101
102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
103 continue;
104
105 list_for_each_entry(wdev, &rdev->wdev_list, list) {
106 if (have_ifidx && wdev->netdev &&
107 wdev->netdev->ifindex == ifidx) {
108 result = wdev;
109 break;
110 }
111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
112 result = wdev;
113 break;
114 }
115 }
116
117 if (result)
118 break;
119 }
120
121 if (result)
122 return result;
123 return ERR_PTR(-ENODEV);
124 }
125
126 static struct cfg80211_registered_device *
127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
128 {
129 struct cfg80211_registered_device *rdev = NULL, *tmp;
130 struct net_device *netdev;
131
132 ASSERT_RTNL();
133
134 if (!attrs[NL80211_ATTR_WIPHY] &&
135 !attrs[NL80211_ATTR_IFINDEX] &&
136 !attrs[NL80211_ATTR_WDEV])
137 return ERR_PTR(-EINVAL);
138
139 if (attrs[NL80211_ATTR_WIPHY])
140 rdev = cfg80211_rdev_by_wiphy_idx(
141 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
142
143 if (attrs[NL80211_ATTR_WDEV]) {
144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
145 struct wireless_dev *wdev;
146 bool found = false;
147
148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
149 if (tmp) {
150 /* make sure wdev exists */
151 list_for_each_entry(wdev, &tmp->wdev_list, list) {
152 if (wdev->identifier != (u32)wdev_id)
153 continue;
154 found = true;
155 break;
156 }
157
158 if (!found)
159 tmp = NULL;
160
161 if (rdev && tmp != rdev)
162 return ERR_PTR(-EINVAL);
163 rdev = tmp;
164 }
165 }
166
167 if (attrs[NL80211_ATTR_IFINDEX]) {
168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
169 netdev = __dev_get_by_index(netns, ifindex);
170 if (netdev) {
171 if (netdev->ieee80211_ptr)
172 tmp = wiphy_to_rdev(
173 netdev->ieee80211_ptr->wiphy);
174 else
175 tmp = NULL;
176
177 /* not wireless device -- return error */
178 if (!tmp)
179 return ERR_PTR(-EINVAL);
180
181 /* mismatch -- return error */
182 if (rdev && tmp != rdev)
183 return ERR_PTR(-EINVAL);
184
185 rdev = tmp;
186 }
187 }
188
189 if (!rdev)
190 return ERR_PTR(-ENODEV);
191
192 if (netns != wiphy_net(&rdev->wiphy))
193 return ERR_PTR(-ENODEV);
194
195 return rdev;
196 }
197
198 /*
199 * This function returns a pointer to the driver
200 * that the genl_info item that is passed refers to.
201 *
202 * The result of this can be a PTR_ERR and hence must
203 * be checked with IS_ERR() for errors.
204 */
205 static struct cfg80211_registered_device *
206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
207 {
208 return __cfg80211_rdev_from_attrs(netns, info->attrs);
209 }
210
211 /* policy for the attributes */
212 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
215 .len = 20-1 },
216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
217
218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
223
224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
230
231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
234
235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
237
238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
240 .len = WLAN_MAX_KEY_LEN },
241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
246
247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
257 .len = NL80211_MAX_SUPP_RATES },
258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
262 .len = IEEE80211_MAX_MESH_ID_LEN },
263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
264
265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
267
268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
272 .len = NL80211_MAX_SUPP_RATES },
273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
274
275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
277
278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
279
280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
281 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
282 .len = IEEE80211_MAX_DATA_LEN },
283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
285
286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
287 .len = IEEE80211_MAX_SSID_LEN },
288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
293 [NL80211_ATTR_STA_FLAGS2] = {
294 .len = sizeof(struct nl80211_sta_flag_update),
295 },
296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
302 [NL80211_ATTR_PID] = { .type = NLA_U32 },
303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
305 .len = WLAN_PMKID_LEN },
306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
310 .len = IEEE80211_MAX_DATA_LEN },
311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
345 .len = IEEE80211_MAX_DATA_LEN },
346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
348 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
349 .len = NL80211_HT_CAPABILITY_LEN
350 },
351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
368 .len = NL80211_VHT_CAPABILITY_LEN,
369 },
370 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
372 .len = IEEE80211_MAX_DATA_LEN },
373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
387 .len = IEEE80211_QOS_MAP_LEN_MAX },
388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
391 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
394 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
398 };
399
400 /* policy for the key attributes */
401 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
402 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
403 [NL80211_KEY_IDX] = { .type = NLA_U8 },
404 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
405 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
406 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
407 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
408 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
409 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
410 };
411
412 /* policy for the key default flags */
413 static const struct nla_policy
414 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
415 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
416 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
417 };
418
419 /* policy for WoWLAN attributes */
420 static const struct nla_policy
421 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
422 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
423 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
424 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
425 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
426 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
427 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
428 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
431 };
432
433 static const struct nla_policy
434 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
435 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
436 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
437 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
438 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
439 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
440 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
441 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
442 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
443 },
444 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
445 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
446 },
447 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
448 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
449 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
450 };
451
452 /* policy for coalesce rule attributes */
453 static const struct nla_policy
454 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
455 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
456 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
457 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
458 };
459
460 /* policy for GTK rekey offload attributes */
461 static const struct nla_policy
462 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
463 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
464 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
465 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
466 };
467
468 static const struct nla_policy
469 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
470 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
471 .len = IEEE80211_MAX_SSID_LEN },
472 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
473 };
474
475 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
476 struct netlink_callback *cb,
477 struct cfg80211_registered_device **rdev,
478 struct wireless_dev **wdev)
479 {
480 int err;
481
482 rtnl_lock();
483
484 if (!cb->args[0]) {
485 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
486 nl80211_fam.attrbuf, nl80211_fam.maxattr,
487 nl80211_policy);
488 if (err)
489 goto out_unlock;
490
491 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
492 nl80211_fam.attrbuf);
493 if (IS_ERR(*wdev)) {
494 err = PTR_ERR(*wdev);
495 goto out_unlock;
496 }
497 *rdev = wiphy_to_rdev((*wdev)->wiphy);
498 /* 0 is the first index - add 1 to parse only once */
499 cb->args[0] = (*rdev)->wiphy_idx + 1;
500 cb->args[1] = (*wdev)->identifier;
501 } else {
502 /* subtract the 1 again here */
503 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
504 struct wireless_dev *tmp;
505
506 if (!wiphy) {
507 err = -ENODEV;
508 goto out_unlock;
509 }
510 *rdev = wiphy_to_rdev(wiphy);
511 *wdev = NULL;
512
513 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
514 if (tmp->identifier == cb->args[1]) {
515 *wdev = tmp;
516 break;
517 }
518 }
519
520 if (!*wdev) {
521 err = -ENODEV;
522 goto out_unlock;
523 }
524 }
525
526 return 0;
527 out_unlock:
528 rtnl_unlock();
529 return err;
530 }
531
532 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
533 {
534 rtnl_unlock();
535 }
536
537 /* IE validation */
538 static bool is_valid_ie_attr(const struct nlattr *attr)
539 {
540 const u8 *pos;
541 int len;
542
543 if (!attr)
544 return true;
545
546 pos = nla_data(attr);
547 len = nla_len(attr);
548
549 while (len) {
550 u8 elemlen;
551
552 if (len < 2)
553 return false;
554 len -= 2;
555
556 elemlen = pos[1];
557 if (elemlen > len)
558 return false;
559
560 len -= elemlen;
561 pos += 2 + elemlen;
562 }
563
564 return true;
565 }
566
567 /* message building helper */
568 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
569 int flags, u8 cmd)
570 {
571 /* since there is no private header just add the generic one */
572 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
573 }
574
575 static int nl80211_msg_put_channel(struct sk_buff *msg,
576 struct ieee80211_channel *chan,
577 bool large)
578 {
579 /* Some channels must be completely excluded from the
580 * list to protect old user-space tools from breaking
581 */
582 if (!large && chan->flags &
583 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
584 return 0;
585
586 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
587 chan->center_freq))
588 goto nla_put_failure;
589
590 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
591 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
592 goto nla_put_failure;
593 if (chan->flags & IEEE80211_CHAN_NO_IR) {
594 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
595 goto nla_put_failure;
596 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
597 goto nla_put_failure;
598 }
599 if (chan->flags & IEEE80211_CHAN_RADAR) {
600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
601 goto nla_put_failure;
602 if (large) {
603 u32 time;
604
605 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
606
607 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
608 chan->dfs_state))
609 goto nla_put_failure;
610 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
611 time))
612 goto nla_put_failure;
613 if (nla_put_u32(msg,
614 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
615 chan->dfs_cac_ms))
616 goto nla_put_failure;
617 }
618 }
619
620 if (large) {
621 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
622 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
623 goto nla_put_failure;
624 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
625 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
626 goto nla_put_failure;
627 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
629 goto nla_put_failure;
630 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
632 goto nla_put_failure;
633 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
635 goto nla_put_failure;
636 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
638 goto nla_put_failure;
639 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
641 goto nla_put_failure;
642 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
644 goto nla_put_failure;
645 }
646
647 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
648 DBM_TO_MBM(chan->max_power)))
649 goto nla_put_failure;
650
651 return 0;
652
653 nla_put_failure:
654 return -ENOBUFS;
655 }
656
657 /* netlink command implementations */
658
659 struct key_parse {
660 struct key_params p;
661 int idx;
662 int type;
663 bool def, defmgmt;
664 bool def_uni, def_multi;
665 };
666
667 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
668 {
669 struct nlattr *tb[NL80211_KEY_MAX + 1];
670 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
671 nl80211_key_policy);
672 if (err)
673 return err;
674
675 k->def = !!tb[NL80211_KEY_DEFAULT];
676 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
677
678 if (k->def) {
679 k->def_uni = true;
680 k->def_multi = true;
681 }
682 if (k->defmgmt)
683 k->def_multi = true;
684
685 if (tb[NL80211_KEY_IDX])
686 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
687
688 if (tb[NL80211_KEY_DATA]) {
689 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
690 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
691 }
692
693 if (tb[NL80211_KEY_SEQ]) {
694 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
695 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
696 }
697
698 if (tb[NL80211_KEY_CIPHER])
699 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
700
701 if (tb[NL80211_KEY_TYPE]) {
702 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
703 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
704 return -EINVAL;
705 }
706
707 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
708 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
709 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
710 tb[NL80211_KEY_DEFAULT_TYPES],
711 nl80211_key_default_policy);
712 if (err)
713 return err;
714
715 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
716 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
717 }
718
719 return 0;
720 }
721
722 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
723 {
724 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
725 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
726 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
727 }
728
729 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
730 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
731 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
732 }
733
734 if (info->attrs[NL80211_ATTR_KEY_IDX])
735 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
736
737 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
738 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
739
740 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
741 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
742
743 if (k->def) {
744 k->def_uni = true;
745 k->def_multi = true;
746 }
747 if (k->defmgmt)
748 k->def_multi = true;
749
750 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
751 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
752 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
753 return -EINVAL;
754 }
755
756 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
757 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
758 int err = nla_parse_nested(
759 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
760 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
761 nl80211_key_default_policy);
762 if (err)
763 return err;
764
765 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
766 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
767 }
768
769 return 0;
770 }
771
772 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
773 {
774 int err;
775
776 memset(k, 0, sizeof(*k));
777 k->idx = -1;
778 k->type = -1;
779
780 if (info->attrs[NL80211_ATTR_KEY])
781 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
782 else
783 err = nl80211_parse_key_old(info, k);
784
785 if (err)
786 return err;
787
788 if (k->def && k->defmgmt)
789 return -EINVAL;
790
791 if (k->defmgmt) {
792 if (k->def_uni || !k->def_multi)
793 return -EINVAL;
794 }
795
796 if (k->idx != -1) {
797 if (k->defmgmt) {
798 if (k->idx < 4 || k->idx > 5)
799 return -EINVAL;
800 } else if (k->def) {
801 if (k->idx < 0 || k->idx > 3)
802 return -EINVAL;
803 } else {
804 if (k->idx < 0 || k->idx > 5)
805 return -EINVAL;
806 }
807 }
808
809 return 0;
810 }
811
812 static struct cfg80211_cached_keys *
813 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
814 struct nlattr *keys, bool *no_ht)
815 {
816 struct key_parse parse;
817 struct nlattr *key;
818 struct cfg80211_cached_keys *result;
819 int rem, err, def = 0;
820
821 result = kzalloc(sizeof(*result), GFP_KERNEL);
822 if (!result)
823 return ERR_PTR(-ENOMEM);
824
825 result->def = -1;
826 result->defmgmt = -1;
827
828 nla_for_each_nested(key, keys, rem) {
829 memset(&parse, 0, sizeof(parse));
830 parse.idx = -1;
831
832 err = nl80211_parse_key_new(key, &parse);
833 if (err)
834 goto error;
835 err = -EINVAL;
836 if (!parse.p.key)
837 goto error;
838 if (parse.idx < 0 || parse.idx > 4)
839 goto error;
840 if (parse.def) {
841 if (def)
842 goto error;
843 def = 1;
844 result->def = parse.idx;
845 if (!parse.def_uni || !parse.def_multi)
846 goto error;
847 } else if (parse.defmgmt)
848 goto error;
849 err = cfg80211_validate_key_settings(rdev, &parse.p,
850 parse.idx, false, NULL);
851 if (err)
852 goto error;
853 result->params[parse.idx].cipher = parse.p.cipher;
854 result->params[parse.idx].key_len = parse.p.key_len;
855 result->params[parse.idx].key = result->data[parse.idx];
856 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
857
858 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
859 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
860 if (no_ht)
861 *no_ht = true;
862 }
863 }
864
865 return result;
866 error:
867 kfree(result);
868 return ERR_PTR(err);
869 }
870
871 static int nl80211_key_allowed(struct wireless_dev *wdev)
872 {
873 ASSERT_WDEV_LOCK(wdev);
874
875 switch (wdev->iftype) {
876 case NL80211_IFTYPE_AP:
877 case NL80211_IFTYPE_AP_VLAN:
878 case NL80211_IFTYPE_P2P_GO:
879 case NL80211_IFTYPE_MESH_POINT:
880 break;
881 case NL80211_IFTYPE_ADHOC:
882 case NL80211_IFTYPE_STATION:
883 case NL80211_IFTYPE_P2P_CLIENT:
884 if (!wdev->current_bss)
885 return -ENOLINK;
886 break;
887 default:
888 return -EINVAL;
889 }
890
891 return 0;
892 }
893
894 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
895 struct nlattr *tb)
896 {
897 struct ieee80211_channel *chan;
898
899 if (tb == NULL)
900 return NULL;
901 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
902 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
903 return NULL;
904 return chan;
905 }
906
907 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
908 {
909 struct nlattr *nl_modes = nla_nest_start(msg, attr);
910 int i;
911
912 if (!nl_modes)
913 goto nla_put_failure;
914
915 i = 0;
916 while (ifmodes) {
917 if ((ifmodes & 1) && nla_put_flag(msg, i))
918 goto nla_put_failure;
919 ifmodes >>= 1;
920 i++;
921 }
922
923 nla_nest_end(msg, nl_modes);
924 return 0;
925
926 nla_put_failure:
927 return -ENOBUFS;
928 }
929
930 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
931 struct sk_buff *msg,
932 bool large)
933 {
934 struct nlattr *nl_combis;
935 int i, j;
936
937 nl_combis = nla_nest_start(msg,
938 NL80211_ATTR_INTERFACE_COMBINATIONS);
939 if (!nl_combis)
940 goto nla_put_failure;
941
942 for (i = 0; i < wiphy->n_iface_combinations; i++) {
943 const struct ieee80211_iface_combination *c;
944 struct nlattr *nl_combi, *nl_limits;
945
946 c = &wiphy->iface_combinations[i];
947
948 nl_combi = nla_nest_start(msg, i + 1);
949 if (!nl_combi)
950 goto nla_put_failure;
951
952 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
953 if (!nl_limits)
954 goto nla_put_failure;
955
956 for (j = 0; j < c->n_limits; j++) {
957 struct nlattr *nl_limit;
958
959 nl_limit = nla_nest_start(msg, j + 1);
960 if (!nl_limit)
961 goto nla_put_failure;
962 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
963 c->limits[j].max))
964 goto nla_put_failure;
965 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
966 c->limits[j].types))
967 goto nla_put_failure;
968 nla_nest_end(msg, nl_limit);
969 }
970
971 nla_nest_end(msg, nl_limits);
972
973 if (c->beacon_int_infra_match &&
974 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
975 goto nla_put_failure;
976 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
977 c->num_different_channels) ||
978 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
979 c->max_interfaces))
980 goto nla_put_failure;
981 if (large &&
982 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
983 c->radar_detect_widths) ||
984 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
985 c->radar_detect_regions)))
986 goto nla_put_failure;
987
988 nla_nest_end(msg, nl_combi);
989 }
990
991 nla_nest_end(msg, nl_combis);
992
993 return 0;
994 nla_put_failure:
995 return -ENOBUFS;
996 }
997
998 #ifdef CONFIG_PM
999 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1000 struct sk_buff *msg)
1001 {
1002 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1003 struct nlattr *nl_tcp;
1004
1005 if (!tcp)
1006 return 0;
1007
1008 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1009 if (!nl_tcp)
1010 return -ENOBUFS;
1011
1012 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1013 tcp->data_payload_max))
1014 return -ENOBUFS;
1015
1016 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1017 tcp->data_payload_max))
1018 return -ENOBUFS;
1019
1020 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1021 return -ENOBUFS;
1022
1023 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1024 sizeof(*tcp->tok), tcp->tok))
1025 return -ENOBUFS;
1026
1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1028 tcp->data_interval_max))
1029 return -ENOBUFS;
1030
1031 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1032 tcp->wake_payload_max))
1033 return -ENOBUFS;
1034
1035 nla_nest_end(msg, nl_tcp);
1036 return 0;
1037 }
1038
1039 static int nl80211_send_wowlan(struct sk_buff *msg,
1040 struct cfg80211_registered_device *rdev,
1041 bool large)
1042 {
1043 struct nlattr *nl_wowlan;
1044
1045 if (!rdev->wiphy.wowlan)
1046 return 0;
1047
1048 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1049 if (!nl_wowlan)
1050 return -ENOBUFS;
1051
1052 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1053 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1054 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1055 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1056 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1058 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1059 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1060 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1061 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1062 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1068 return -ENOBUFS;
1069
1070 if (rdev->wiphy.wowlan->n_patterns) {
1071 struct nl80211_pattern_support pat = {
1072 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1073 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1074 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1075 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1076 };
1077
1078 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1079 sizeof(pat), &pat))
1080 return -ENOBUFS;
1081 }
1082
1083 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1084 return -ENOBUFS;
1085
1086 nla_nest_end(msg, nl_wowlan);
1087
1088 return 0;
1089 }
1090 #endif
1091
1092 static int nl80211_send_coalesce(struct sk_buff *msg,
1093 struct cfg80211_registered_device *rdev)
1094 {
1095 struct nl80211_coalesce_rule_support rule;
1096
1097 if (!rdev->wiphy.coalesce)
1098 return 0;
1099
1100 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1101 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1102 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1103 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1104 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1105 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1106
1107 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1108 return -ENOBUFS;
1109
1110 return 0;
1111 }
1112
1113 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1114 struct ieee80211_supported_band *sband)
1115 {
1116 struct nlattr *nl_rates, *nl_rate;
1117 struct ieee80211_rate *rate;
1118 int i;
1119
1120 /* add HT info */
1121 if (sband->ht_cap.ht_supported &&
1122 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1123 sizeof(sband->ht_cap.mcs),
1124 &sband->ht_cap.mcs) ||
1125 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1126 sband->ht_cap.cap) ||
1127 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1128 sband->ht_cap.ampdu_factor) ||
1129 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1130 sband->ht_cap.ampdu_density)))
1131 return -ENOBUFS;
1132
1133 /* add VHT info */
1134 if (sband->vht_cap.vht_supported &&
1135 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1136 sizeof(sband->vht_cap.vht_mcs),
1137 &sband->vht_cap.vht_mcs) ||
1138 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1139 sband->vht_cap.cap)))
1140 return -ENOBUFS;
1141
1142 /* add bitrates */
1143 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1144 if (!nl_rates)
1145 return -ENOBUFS;
1146
1147 for (i = 0; i < sband->n_bitrates; i++) {
1148 nl_rate = nla_nest_start(msg, i);
1149 if (!nl_rate)
1150 return -ENOBUFS;
1151
1152 rate = &sband->bitrates[i];
1153 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1154 rate->bitrate))
1155 return -ENOBUFS;
1156 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1157 nla_put_flag(msg,
1158 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1159 return -ENOBUFS;
1160
1161 nla_nest_end(msg, nl_rate);
1162 }
1163
1164 nla_nest_end(msg, nl_rates);
1165
1166 return 0;
1167 }
1168
1169 static int
1170 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1171 const struct ieee80211_txrx_stypes *mgmt_stypes)
1172 {
1173 u16 stypes;
1174 struct nlattr *nl_ftypes, *nl_ifs;
1175 enum nl80211_iftype ift;
1176 int i;
1177
1178 if (!mgmt_stypes)
1179 return 0;
1180
1181 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1182 if (!nl_ifs)
1183 return -ENOBUFS;
1184
1185 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1186 nl_ftypes = nla_nest_start(msg, ift);
1187 if (!nl_ftypes)
1188 return -ENOBUFS;
1189 i = 0;
1190 stypes = mgmt_stypes[ift].tx;
1191 while (stypes) {
1192 if ((stypes & 1) &&
1193 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1194 (i << 4) | IEEE80211_FTYPE_MGMT))
1195 return -ENOBUFS;
1196 stypes >>= 1;
1197 i++;
1198 }
1199 nla_nest_end(msg, nl_ftypes);
1200 }
1201
1202 nla_nest_end(msg, nl_ifs);
1203
1204 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1205 if (!nl_ifs)
1206 return -ENOBUFS;
1207
1208 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1209 nl_ftypes = nla_nest_start(msg, ift);
1210 if (!nl_ftypes)
1211 return -ENOBUFS;
1212 i = 0;
1213 stypes = mgmt_stypes[ift].rx;
1214 while (stypes) {
1215 if ((stypes & 1) &&
1216 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1217 (i << 4) | IEEE80211_FTYPE_MGMT))
1218 return -ENOBUFS;
1219 stypes >>= 1;
1220 i++;
1221 }
1222 nla_nest_end(msg, nl_ftypes);
1223 }
1224 nla_nest_end(msg, nl_ifs);
1225
1226 return 0;
1227 }
1228
1229 struct nl80211_dump_wiphy_state {
1230 s64 filter_wiphy;
1231 long start;
1232 long split_start, band_start, chan_start;
1233 bool split;
1234 };
1235
1236 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1237 enum nl80211_commands cmd,
1238 struct sk_buff *msg, u32 portid, u32 seq,
1239 int flags, struct nl80211_dump_wiphy_state *state)
1240 {
1241 void *hdr;
1242 struct nlattr *nl_bands, *nl_band;
1243 struct nlattr *nl_freqs, *nl_freq;
1244 struct nlattr *nl_cmds;
1245 enum ieee80211_band band;
1246 struct ieee80211_channel *chan;
1247 int i;
1248 const struct ieee80211_txrx_stypes *mgmt_stypes =
1249 rdev->wiphy.mgmt_stypes;
1250 u32 features;
1251
1252 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1253 if (!hdr)
1254 return -ENOBUFS;
1255
1256 if (WARN_ON(!state))
1257 return -EINVAL;
1258
1259 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1260 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1261 wiphy_name(&rdev->wiphy)) ||
1262 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1263 cfg80211_rdev_list_generation))
1264 goto nla_put_failure;
1265
1266 if (cmd != NL80211_CMD_NEW_WIPHY)
1267 goto finish;
1268
1269 switch (state->split_start) {
1270 case 0:
1271 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1272 rdev->wiphy.retry_short) ||
1273 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1274 rdev->wiphy.retry_long) ||
1275 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1276 rdev->wiphy.frag_threshold) ||
1277 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1278 rdev->wiphy.rts_threshold) ||
1279 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1280 rdev->wiphy.coverage_class) ||
1281 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1282 rdev->wiphy.max_scan_ssids) ||
1283 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1284 rdev->wiphy.max_sched_scan_ssids) ||
1285 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1286 rdev->wiphy.max_scan_ie_len) ||
1287 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1288 rdev->wiphy.max_sched_scan_ie_len) ||
1289 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1290 rdev->wiphy.max_match_sets))
1291 goto nla_put_failure;
1292
1293 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1294 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1295 goto nla_put_failure;
1296 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1297 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1298 goto nla_put_failure;
1299 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1300 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1301 goto nla_put_failure;
1302 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1303 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1304 goto nla_put_failure;
1305 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1306 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1307 goto nla_put_failure;
1308 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1309 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1310 goto nla_put_failure;
1311 state->split_start++;
1312 if (state->split)
1313 break;
1314 case 1:
1315 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1316 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1317 rdev->wiphy.cipher_suites))
1318 goto nla_put_failure;
1319
1320 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1321 rdev->wiphy.max_num_pmkids))
1322 goto nla_put_failure;
1323
1324 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1325 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1326 goto nla_put_failure;
1327
1328 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1329 rdev->wiphy.available_antennas_tx) ||
1330 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1331 rdev->wiphy.available_antennas_rx))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1335 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1336 rdev->wiphy.probe_resp_offload))
1337 goto nla_put_failure;
1338
1339 if ((rdev->wiphy.available_antennas_tx ||
1340 rdev->wiphy.available_antennas_rx) &&
1341 rdev->ops->get_antenna) {
1342 u32 tx_ant = 0, rx_ant = 0;
1343 int res;
1344 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1345 if (!res) {
1346 if (nla_put_u32(msg,
1347 NL80211_ATTR_WIPHY_ANTENNA_TX,
1348 tx_ant) ||
1349 nla_put_u32(msg,
1350 NL80211_ATTR_WIPHY_ANTENNA_RX,
1351 rx_ant))
1352 goto nla_put_failure;
1353 }
1354 }
1355
1356 state->split_start++;
1357 if (state->split)
1358 break;
1359 case 2:
1360 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1361 rdev->wiphy.interface_modes))
1362 goto nla_put_failure;
1363 state->split_start++;
1364 if (state->split)
1365 break;
1366 case 3:
1367 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1368 if (!nl_bands)
1369 goto nla_put_failure;
1370
1371 for (band = state->band_start;
1372 band < IEEE80211_NUM_BANDS; band++) {
1373 struct ieee80211_supported_band *sband;
1374
1375 sband = rdev->wiphy.bands[band];
1376
1377 if (!sband)
1378 continue;
1379
1380 nl_band = nla_nest_start(msg, band);
1381 if (!nl_band)
1382 goto nla_put_failure;
1383
1384 switch (state->chan_start) {
1385 case 0:
1386 if (nl80211_send_band_rateinfo(msg, sband))
1387 goto nla_put_failure;
1388 state->chan_start++;
1389 if (state->split)
1390 break;
1391 default:
1392 /* add frequencies */
1393 nl_freqs = nla_nest_start(
1394 msg, NL80211_BAND_ATTR_FREQS);
1395 if (!nl_freqs)
1396 goto nla_put_failure;
1397
1398 for (i = state->chan_start - 1;
1399 i < sband->n_channels;
1400 i++) {
1401 nl_freq = nla_nest_start(msg, i);
1402 if (!nl_freq)
1403 goto nla_put_failure;
1404
1405 chan = &sband->channels[i];
1406
1407 if (nl80211_msg_put_channel(
1408 msg, chan,
1409 state->split))
1410 goto nla_put_failure;
1411
1412 nla_nest_end(msg, nl_freq);
1413 if (state->split)
1414 break;
1415 }
1416 if (i < sband->n_channels)
1417 state->chan_start = i + 2;
1418 else
1419 state->chan_start = 0;
1420 nla_nest_end(msg, nl_freqs);
1421 }
1422
1423 nla_nest_end(msg, nl_band);
1424
1425 if (state->split) {
1426 /* start again here */
1427 if (state->chan_start)
1428 band--;
1429 break;
1430 }
1431 }
1432 nla_nest_end(msg, nl_bands);
1433
1434 if (band < IEEE80211_NUM_BANDS)
1435 state->band_start = band + 1;
1436 else
1437 state->band_start = 0;
1438
1439 /* if bands & channels are done, continue outside */
1440 if (state->band_start == 0 && state->chan_start == 0)
1441 state->split_start++;
1442 if (state->split)
1443 break;
1444 case 4:
1445 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1446 if (!nl_cmds)
1447 goto nla_put_failure;
1448
1449 i = 0;
1450 #define CMD(op, n) \
1451 do { \
1452 if (rdev->ops->op) { \
1453 i++; \
1454 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1455 goto nla_put_failure; \
1456 } \
1457 } while (0)
1458
1459 CMD(add_virtual_intf, NEW_INTERFACE);
1460 CMD(change_virtual_intf, SET_INTERFACE);
1461 CMD(add_key, NEW_KEY);
1462 CMD(start_ap, START_AP);
1463 CMD(add_station, NEW_STATION);
1464 CMD(add_mpath, NEW_MPATH);
1465 CMD(update_mesh_config, SET_MESH_CONFIG);
1466 CMD(change_bss, SET_BSS);
1467 CMD(auth, AUTHENTICATE);
1468 CMD(assoc, ASSOCIATE);
1469 CMD(deauth, DEAUTHENTICATE);
1470 CMD(disassoc, DISASSOCIATE);
1471 CMD(join_ibss, JOIN_IBSS);
1472 CMD(join_mesh, JOIN_MESH);
1473 CMD(set_pmksa, SET_PMKSA);
1474 CMD(del_pmksa, DEL_PMKSA);
1475 CMD(flush_pmksa, FLUSH_PMKSA);
1476 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1477 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1478 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1479 CMD(mgmt_tx, FRAME);
1480 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1481 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1482 i++;
1483 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1484 goto nla_put_failure;
1485 }
1486 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1487 rdev->ops->join_mesh) {
1488 i++;
1489 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1490 goto nla_put_failure;
1491 }
1492 CMD(set_wds_peer, SET_WDS_PEER);
1493 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1494 CMD(tdls_mgmt, TDLS_MGMT);
1495 CMD(tdls_oper, TDLS_OPER);
1496 }
1497 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1498 CMD(sched_scan_start, START_SCHED_SCAN);
1499 CMD(probe_client, PROBE_CLIENT);
1500 CMD(set_noack_map, SET_NOACK_MAP);
1501 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1502 i++;
1503 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1504 goto nla_put_failure;
1505 }
1506 CMD(start_p2p_device, START_P2P_DEVICE);
1507 CMD(set_mcast_rate, SET_MCAST_RATE);
1508 #ifdef CONFIG_NL80211_TESTMODE
1509 CMD(testmode_cmd, TESTMODE);
1510 #endif
1511 if (state->split) {
1512 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1513 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1514 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1515 CMD(channel_switch, CHANNEL_SWITCH);
1516 CMD(set_qos_map, SET_QOS_MAP);
1517 if (rdev->wiphy.flags &
1518 WIPHY_FLAG_SUPPORTS_WMM_ADMISSION)
1519 CMD(add_tx_ts, ADD_TX_TS);
1520 }
1521 /* add into the if now */
1522 #undef CMD
1523
1524 if (rdev->ops->connect || rdev->ops->auth) {
1525 i++;
1526 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1527 goto nla_put_failure;
1528 }
1529
1530 if (rdev->ops->disconnect || rdev->ops->deauth) {
1531 i++;
1532 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1533 goto nla_put_failure;
1534 }
1535
1536 nla_nest_end(msg, nl_cmds);
1537 state->split_start++;
1538 if (state->split)
1539 break;
1540 case 5:
1541 if (rdev->ops->remain_on_channel &&
1542 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1543 nla_put_u32(msg,
1544 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1545 rdev->wiphy.max_remain_on_channel_duration))
1546 goto nla_put_failure;
1547
1548 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1549 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1550 goto nla_put_failure;
1551
1552 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1553 goto nla_put_failure;
1554 state->split_start++;
1555 if (state->split)
1556 break;
1557 case 6:
1558 #ifdef CONFIG_PM
1559 if (nl80211_send_wowlan(msg, rdev, state->split))
1560 goto nla_put_failure;
1561 state->split_start++;
1562 if (state->split)
1563 break;
1564 #else
1565 state->split_start++;
1566 #endif
1567 case 7:
1568 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1569 rdev->wiphy.software_iftypes))
1570 goto nla_put_failure;
1571
1572 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1573 state->split))
1574 goto nla_put_failure;
1575
1576 state->split_start++;
1577 if (state->split)
1578 break;
1579 case 8:
1580 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1581 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1582 rdev->wiphy.ap_sme_capa))
1583 goto nla_put_failure;
1584
1585 features = rdev->wiphy.features;
1586 /*
1587 * We can only add the per-channel limit information if the
1588 * dump is split, otherwise it makes it too big. Therefore
1589 * only advertise it in that case.
1590 */
1591 if (state->split)
1592 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1593 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1594 goto nla_put_failure;
1595
1596 if (rdev->wiphy.ht_capa_mod_mask &&
1597 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1598 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1599 rdev->wiphy.ht_capa_mod_mask))
1600 goto nla_put_failure;
1601
1602 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1603 rdev->wiphy.max_acl_mac_addrs &&
1604 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1605 rdev->wiphy.max_acl_mac_addrs))
1606 goto nla_put_failure;
1607
1608 /*
1609 * Any information below this point is only available to
1610 * applications that can deal with it being split. This
1611 * helps ensure that newly added capabilities don't break
1612 * older tools by overrunning their buffers.
1613 *
1614 * We still increment split_start so that in the split
1615 * case we'll continue with more data in the next round,
1616 * but break unconditionally so unsplit data stops here.
1617 */
1618 state->split_start++;
1619 break;
1620 case 9:
1621 if (rdev->wiphy.extended_capabilities &&
1622 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1623 rdev->wiphy.extended_capabilities_len,
1624 rdev->wiphy.extended_capabilities) ||
1625 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1626 rdev->wiphy.extended_capabilities_len,
1627 rdev->wiphy.extended_capabilities_mask)))
1628 goto nla_put_failure;
1629
1630 if (rdev->wiphy.vht_capa_mod_mask &&
1631 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1632 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1633 rdev->wiphy.vht_capa_mod_mask))
1634 goto nla_put_failure;
1635
1636 state->split_start++;
1637 break;
1638 case 10:
1639 if (nl80211_send_coalesce(msg, rdev))
1640 goto nla_put_failure;
1641
1642 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1643 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1644 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1645 goto nla_put_failure;
1646
1647 if (rdev->wiphy.max_ap_assoc_sta &&
1648 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1649 rdev->wiphy.max_ap_assoc_sta))
1650 goto nla_put_failure;
1651
1652 state->split_start++;
1653 break;
1654 case 11:
1655 if (rdev->wiphy.n_vendor_commands) {
1656 const struct nl80211_vendor_cmd_info *info;
1657 struct nlattr *nested;
1658
1659 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1660 if (!nested)
1661 goto nla_put_failure;
1662
1663 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1664 info = &rdev->wiphy.vendor_commands[i].info;
1665 if (nla_put(msg, i + 1, sizeof(*info), info))
1666 goto nla_put_failure;
1667 }
1668 nla_nest_end(msg, nested);
1669 }
1670
1671 if (rdev->wiphy.n_vendor_events) {
1672 const struct nl80211_vendor_cmd_info *info;
1673 struct nlattr *nested;
1674
1675 nested = nla_nest_start(msg,
1676 NL80211_ATTR_VENDOR_EVENTS);
1677 if (!nested)
1678 goto nla_put_failure;
1679
1680 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1681 info = &rdev->wiphy.vendor_events[i];
1682 if (nla_put(msg, i + 1, sizeof(*info), info))
1683 goto nla_put_failure;
1684 }
1685 nla_nest_end(msg, nested);
1686 }
1687 state->split_start++;
1688 break;
1689 case 12:
1690 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1691 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1692 rdev->wiphy.max_num_csa_counters))
1693 goto nla_put_failure;
1694
1695 /* done */
1696 state->split_start = 0;
1697 break;
1698 }
1699 finish:
1700 return genlmsg_end(msg, hdr);
1701
1702 nla_put_failure:
1703 genlmsg_cancel(msg, hdr);
1704 return -EMSGSIZE;
1705 }
1706
1707 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1708 struct netlink_callback *cb,
1709 struct nl80211_dump_wiphy_state *state)
1710 {
1711 struct nlattr **tb = nl80211_fam.attrbuf;
1712 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1713 tb, nl80211_fam.maxattr, nl80211_policy);
1714 /* ignore parse errors for backward compatibility */
1715 if (ret)
1716 return 0;
1717
1718 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1719 if (tb[NL80211_ATTR_WIPHY])
1720 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1721 if (tb[NL80211_ATTR_WDEV])
1722 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1723 if (tb[NL80211_ATTR_IFINDEX]) {
1724 struct net_device *netdev;
1725 struct cfg80211_registered_device *rdev;
1726 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1727
1728 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1729 if (!netdev)
1730 return -ENODEV;
1731 if (netdev->ieee80211_ptr) {
1732 rdev = wiphy_to_rdev(
1733 netdev->ieee80211_ptr->wiphy);
1734 state->filter_wiphy = rdev->wiphy_idx;
1735 }
1736 }
1737
1738 return 0;
1739 }
1740
1741 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1742 {
1743 int idx = 0, ret;
1744 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1745 struct cfg80211_registered_device *rdev;
1746
1747 rtnl_lock();
1748 if (!state) {
1749 state = kzalloc(sizeof(*state), GFP_KERNEL);
1750 if (!state) {
1751 rtnl_unlock();
1752 return -ENOMEM;
1753 }
1754 state->filter_wiphy = -1;
1755 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1756 if (ret) {
1757 kfree(state);
1758 rtnl_unlock();
1759 return ret;
1760 }
1761 cb->args[0] = (long)state;
1762 }
1763
1764 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1765 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1766 continue;
1767 if (++idx <= state->start)
1768 continue;
1769 if (state->filter_wiphy != -1 &&
1770 state->filter_wiphy != rdev->wiphy_idx)
1771 continue;
1772 /* attempt to fit multiple wiphy data chunks into the skb */
1773 do {
1774 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1775 skb,
1776 NETLINK_CB(cb->skb).portid,
1777 cb->nlh->nlmsg_seq,
1778 NLM_F_MULTI, state);
1779 if (ret < 0) {
1780 /*
1781 * If sending the wiphy data didn't fit (ENOBUFS
1782 * or EMSGSIZE returned), this SKB is still
1783 * empty (so it's not too big because another
1784 * wiphy dataset is already in the skb) and
1785 * we've not tried to adjust the dump allocation
1786 * yet ... then adjust the alloc size to be
1787 * bigger, and return 1 but with the empty skb.
1788 * This results in an empty message being RX'ed
1789 * in userspace, but that is ignored.
1790 *
1791 * We can then retry with the larger buffer.
1792 */
1793 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1794 !skb->len && !state->split &&
1795 cb->min_dump_alloc < 4096) {
1796 cb->min_dump_alloc = 4096;
1797 state->split_start = 0;
1798 rtnl_unlock();
1799 return 1;
1800 }
1801 idx--;
1802 break;
1803 }
1804 } while (state->split_start > 0);
1805 break;
1806 }
1807 rtnl_unlock();
1808
1809 state->start = idx;
1810
1811 return skb->len;
1812 }
1813
1814 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1815 {
1816 kfree((void *)cb->args[0]);
1817 return 0;
1818 }
1819
1820 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1821 {
1822 struct sk_buff *msg;
1823 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1824 struct nl80211_dump_wiphy_state state = {};
1825
1826 msg = nlmsg_new(4096, GFP_KERNEL);
1827 if (!msg)
1828 return -ENOMEM;
1829
1830 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1831 info->snd_portid, info->snd_seq, 0,
1832 &state) < 0) {
1833 nlmsg_free(msg);
1834 return -ENOBUFS;
1835 }
1836
1837 return genlmsg_reply(msg, info);
1838 }
1839
1840 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1841 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1842 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1843 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1844 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1845 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1846 };
1847
1848 static int parse_txq_params(struct nlattr *tb[],
1849 struct ieee80211_txq_params *txq_params)
1850 {
1851 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1852 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1853 !tb[NL80211_TXQ_ATTR_AIFS])
1854 return -EINVAL;
1855
1856 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1857 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1858 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1859 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1860 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1861
1862 if (txq_params->ac >= NL80211_NUM_ACS)
1863 return -EINVAL;
1864
1865 return 0;
1866 }
1867
1868 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1869 {
1870 /*
1871 * You can only set the channel explicitly for WDS interfaces,
1872 * all others have their channel managed via their respective
1873 * "establish a connection" command (connect, join, ...)
1874 *
1875 * For AP/GO and mesh mode, the channel can be set with the
1876 * channel userspace API, but is only stored and passed to the
1877 * low-level driver when the AP starts or the mesh is joined.
1878 * This is for backward compatibility, userspace can also give
1879 * the channel in the start-ap or join-mesh commands instead.
1880 *
1881 * Monitors are special as they are normally slaved to
1882 * whatever else is going on, so they have their own special
1883 * operation to set the monitor channel if possible.
1884 */
1885 return !wdev ||
1886 wdev->iftype == NL80211_IFTYPE_AP ||
1887 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1888 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1889 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1890 }
1891
1892 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1893 struct genl_info *info,
1894 struct cfg80211_chan_def *chandef)
1895 {
1896 u32 control_freq;
1897
1898 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1899 return -EINVAL;
1900
1901 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1902
1903 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1904 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1905 chandef->center_freq1 = control_freq;
1906 chandef->center_freq2 = 0;
1907
1908 /* Primary channel not allowed */
1909 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1910 return -EINVAL;
1911
1912 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1913 enum nl80211_channel_type chantype;
1914
1915 chantype = nla_get_u32(
1916 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1917
1918 switch (chantype) {
1919 case NL80211_CHAN_NO_HT:
1920 case NL80211_CHAN_HT20:
1921 case NL80211_CHAN_HT40PLUS:
1922 case NL80211_CHAN_HT40MINUS:
1923 cfg80211_chandef_create(chandef, chandef->chan,
1924 chantype);
1925 break;
1926 default:
1927 return -EINVAL;
1928 }
1929 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1930 chandef->width =
1931 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1932 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1933 chandef->center_freq1 =
1934 nla_get_u32(
1935 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1936 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1937 chandef->center_freq2 =
1938 nla_get_u32(
1939 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1940 }
1941
1942 if (!cfg80211_chandef_valid(chandef))
1943 return -EINVAL;
1944
1945 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1946 IEEE80211_CHAN_DISABLED))
1947 return -EINVAL;
1948
1949 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1950 chandef->width == NL80211_CHAN_WIDTH_10) &&
1951 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1952 return -EINVAL;
1953
1954 return 0;
1955 }
1956
1957 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1958 struct net_device *dev,
1959 struct genl_info *info)
1960 {
1961 struct cfg80211_chan_def chandef;
1962 int result;
1963 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1964 struct wireless_dev *wdev = NULL;
1965
1966 if (dev)
1967 wdev = dev->ieee80211_ptr;
1968 if (!nl80211_can_set_dev_channel(wdev))
1969 return -EOPNOTSUPP;
1970 if (wdev)
1971 iftype = wdev->iftype;
1972
1973 result = nl80211_parse_chandef(rdev, info, &chandef);
1974 if (result)
1975 return result;
1976
1977 switch (iftype) {
1978 case NL80211_IFTYPE_AP:
1979 case NL80211_IFTYPE_P2P_GO:
1980 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1981 result = -EINVAL;
1982 break;
1983 }
1984 if (wdev->beacon_interval) {
1985 if (!dev || !rdev->ops->set_ap_chanwidth ||
1986 !(rdev->wiphy.features &
1987 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1988 result = -EBUSY;
1989 break;
1990 }
1991
1992 /* Only allow dynamic channel width changes */
1993 if (chandef.chan != wdev->preset_chandef.chan) {
1994 result = -EBUSY;
1995 break;
1996 }
1997 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
1998 if (result)
1999 break;
2000 }
2001 wdev->preset_chandef = chandef;
2002 result = 0;
2003 break;
2004 case NL80211_IFTYPE_MESH_POINT:
2005 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2006 break;
2007 case NL80211_IFTYPE_MONITOR:
2008 result = cfg80211_set_monitor_channel(rdev, &chandef);
2009 break;
2010 default:
2011 result = -EINVAL;
2012 }
2013
2014 return result;
2015 }
2016
2017 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2018 {
2019 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2020 struct net_device *netdev = info->user_ptr[1];
2021
2022 return __nl80211_set_channel(rdev, netdev, info);
2023 }
2024
2025 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2026 {
2027 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2028 struct net_device *dev = info->user_ptr[1];
2029 struct wireless_dev *wdev = dev->ieee80211_ptr;
2030 const u8 *bssid;
2031
2032 if (!info->attrs[NL80211_ATTR_MAC])
2033 return -EINVAL;
2034
2035 if (netif_running(dev))
2036 return -EBUSY;
2037
2038 if (!rdev->ops->set_wds_peer)
2039 return -EOPNOTSUPP;
2040
2041 if (wdev->iftype != NL80211_IFTYPE_WDS)
2042 return -EOPNOTSUPP;
2043
2044 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2045 return rdev_set_wds_peer(rdev, dev, bssid);
2046 }
2047
2048
2049 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2050 {
2051 struct cfg80211_registered_device *rdev;
2052 struct net_device *netdev = NULL;
2053 struct wireless_dev *wdev;
2054 int result = 0, rem_txq_params = 0;
2055 struct nlattr *nl_txq_params;
2056 u32 changed;
2057 u8 retry_short = 0, retry_long = 0;
2058 u32 frag_threshold = 0, rts_threshold = 0;
2059 u8 coverage_class = 0;
2060
2061 ASSERT_RTNL();
2062
2063 /*
2064 * Try to find the wiphy and netdev. Normally this
2065 * function shouldn't need the netdev, but this is
2066 * done for backward compatibility -- previously
2067 * setting the channel was done per wiphy, but now
2068 * it is per netdev. Previous userland like hostapd
2069 * also passed a netdev to set_wiphy, so that it is
2070 * possible to let that go to the right netdev!
2071 */
2072
2073 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2074 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2075
2076 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2077 if (netdev && netdev->ieee80211_ptr)
2078 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2079 else
2080 netdev = NULL;
2081 }
2082
2083 if (!netdev) {
2084 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2085 info->attrs);
2086 if (IS_ERR(rdev))
2087 return PTR_ERR(rdev);
2088 wdev = NULL;
2089 netdev = NULL;
2090 result = 0;
2091 } else
2092 wdev = netdev->ieee80211_ptr;
2093
2094 /*
2095 * end workaround code, by now the rdev is available
2096 * and locked, and wdev may or may not be NULL.
2097 */
2098
2099 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2100 result = cfg80211_dev_rename(
2101 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2102
2103 if (result)
2104 return result;
2105
2106 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2107 struct ieee80211_txq_params txq_params;
2108 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2109
2110 if (!rdev->ops->set_txq_params)
2111 return -EOPNOTSUPP;
2112
2113 if (!netdev)
2114 return -EINVAL;
2115
2116 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2117 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2118 return -EINVAL;
2119
2120 if (!netif_running(netdev))
2121 return -ENETDOWN;
2122
2123 nla_for_each_nested(nl_txq_params,
2124 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2125 rem_txq_params) {
2126 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2127 nla_data(nl_txq_params),
2128 nla_len(nl_txq_params),
2129 txq_params_policy);
2130 if (result)
2131 return result;
2132 result = parse_txq_params(tb, &txq_params);
2133 if (result)
2134 return result;
2135
2136 result = rdev_set_txq_params(rdev, netdev,
2137 &txq_params);
2138 if (result)
2139 return result;
2140 }
2141 }
2142
2143 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2144 result = __nl80211_set_channel(
2145 rdev,
2146 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2147 info);
2148 if (result)
2149 return result;
2150 }
2151
2152 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2153 struct wireless_dev *txp_wdev = wdev;
2154 enum nl80211_tx_power_setting type;
2155 int idx, mbm = 0;
2156
2157 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2158 txp_wdev = NULL;
2159
2160 if (!rdev->ops->set_tx_power)
2161 return -EOPNOTSUPP;
2162
2163 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2164 type = nla_get_u32(info->attrs[idx]);
2165
2166 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2167 (type != NL80211_TX_POWER_AUTOMATIC))
2168 return -EINVAL;
2169
2170 if (type != NL80211_TX_POWER_AUTOMATIC) {
2171 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2172 mbm = nla_get_u32(info->attrs[idx]);
2173 }
2174
2175 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2176 if (result)
2177 return result;
2178 }
2179
2180 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2181 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2182 u32 tx_ant, rx_ant;
2183 if ((!rdev->wiphy.available_antennas_tx &&
2184 !rdev->wiphy.available_antennas_rx) ||
2185 !rdev->ops->set_antenna)
2186 return -EOPNOTSUPP;
2187
2188 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2189 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2190
2191 /* reject antenna configurations which don't match the
2192 * available antenna masks, except for the "all" mask */
2193 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2194 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2195 return -EINVAL;
2196
2197 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2198 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2199
2200 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2201 if (result)
2202 return result;
2203 }
2204
2205 changed = 0;
2206
2207 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2208 retry_short = nla_get_u8(
2209 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2210 if (retry_short == 0)
2211 return -EINVAL;
2212
2213 changed |= WIPHY_PARAM_RETRY_SHORT;
2214 }
2215
2216 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2217 retry_long = nla_get_u8(
2218 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2219 if (retry_long == 0)
2220 return -EINVAL;
2221
2222 changed |= WIPHY_PARAM_RETRY_LONG;
2223 }
2224
2225 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2226 frag_threshold = nla_get_u32(
2227 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2228 if (frag_threshold < 256)
2229 return -EINVAL;
2230
2231 if (frag_threshold != (u32) -1) {
2232 /*
2233 * Fragments (apart from the last one) are required to
2234 * have even length. Make the fragmentation code
2235 * simpler by stripping LSB should someone try to use
2236 * odd threshold value.
2237 */
2238 frag_threshold &= ~0x1;
2239 }
2240 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2241 }
2242
2243 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2244 rts_threshold = nla_get_u32(
2245 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2246 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2247 }
2248
2249 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2250 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2251 return -EINVAL;
2252
2253 coverage_class = nla_get_u8(
2254 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2255 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2256 }
2257
2258 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2259 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2260 return -EOPNOTSUPP;
2261
2262 changed |= WIPHY_PARAM_DYN_ACK;
2263 }
2264
2265 if (changed) {
2266 u8 old_retry_short, old_retry_long;
2267 u32 old_frag_threshold, old_rts_threshold;
2268 u8 old_coverage_class;
2269
2270 if (!rdev->ops->set_wiphy_params)
2271 return -EOPNOTSUPP;
2272
2273 old_retry_short = rdev->wiphy.retry_short;
2274 old_retry_long = rdev->wiphy.retry_long;
2275 old_frag_threshold = rdev->wiphy.frag_threshold;
2276 old_rts_threshold = rdev->wiphy.rts_threshold;
2277 old_coverage_class = rdev->wiphy.coverage_class;
2278
2279 if (changed & WIPHY_PARAM_RETRY_SHORT)
2280 rdev->wiphy.retry_short = retry_short;
2281 if (changed & WIPHY_PARAM_RETRY_LONG)
2282 rdev->wiphy.retry_long = retry_long;
2283 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2284 rdev->wiphy.frag_threshold = frag_threshold;
2285 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2286 rdev->wiphy.rts_threshold = rts_threshold;
2287 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2288 rdev->wiphy.coverage_class = coverage_class;
2289
2290 result = rdev_set_wiphy_params(rdev, changed);
2291 if (result) {
2292 rdev->wiphy.retry_short = old_retry_short;
2293 rdev->wiphy.retry_long = old_retry_long;
2294 rdev->wiphy.frag_threshold = old_frag_threshold;
2295 rdev->wiphy.rts_threshold = old_rts_threshold;
2296 rdev->wiphy.coverage_class = old_coverage_class;
2297 }
2298 }
2299 return 0;
2300 }
2301
2302 static inline u64 wdev_id(struct wireless_dev *wdev)
2303 {
2304 return (u64)wdev->identifier |
2305 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2306 }
2307
2308 static int nl80211_send_chandef(struct sk_buff *msg,
2309 const struct cfg80211_chan_def *chandef)
2310 {
2311 WARN_ON(!cfg80211_chandef_valid(chandef));
2312
2313 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2314 chandef->chan->center_freq))
2315 return -ENOBUFS;
2316 switch (chandef->width) {
2317 case NL80211_CHAN_WIDTH_20_NOHT:
2318 case NL80211_CHAN_WIDTH_20:
2319 case NL80211_CHAN_WIDTH_40:
2320 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2321 cfg80211_get_chandef_type(chandef)))
2322 return -ENOBUFS;
2323 break;
2324 default:
2325 break;
2326 }
2327 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2328 return -ENOBUFS;
2329 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2330 return -ENOBUFS;
2331 if (chandef->center_freq2 &&
2332 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2333 return -ENOBUFS;
2334 return 0;
2335 }
2336
2337 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2338 struct cfg80211_registered_device *rdev,
2339 struct wireless_dev *wdev)
2340 {
2341 struct net_device *dev = wdev->netdev;
2342 void *hdr;
2343
2344 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2345 if (!hdr)
2346 return -1;
2347
2348 if (dev &&
2349 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2350 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2351 goto nla_put_failure;
2352
2353 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2354 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2355 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2356 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2357 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2358 rdev->devlist_generation ^
2359 (cfg80211_rdev_list_generation << 2)))
2360 goto nla_put_failure;
2361
2362 if (rdev->ops->get_channel) {
2363 int ret;
2364 struct cfg80211_chan_def chandef;
2365
2366 ret = rdev_get_channel(rdev, wdev, &chandef);
2367 if (ret == 0) {
2368 if (nl80211_send_chandef(msg, &chandef))
2369 goto nla_put_failure;
2370 }
2371 }
2372
2373 if (wdev->ssid_len) {
2374 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2375 goto nla_put_failure;
2376 }
2377
2378 return genlmsg_end(msg, hdr);
2379
2380 nla_put_failure:
2381 genlmsg_cancel(msg, hdr);
2382 return -EMSGSIZE;
2383 }
2384
2385 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2386 {
2387 int wp_idx = 0;
2388 int if_idx = 0;
2389 int wp_start = cb->args[0];
2390 int if_start = cb->args[1];
2391 struct cfg80211_registered_device *rdev;
2392 struct wireless_dev *wdev;
2393
2394 rtnl_lock();
2395 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2396 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2397 continue;
2398 if (wp_idx < wp_start) {
2399 wp_idx++;
2400 continue;
2401 }
2402 if_idx = 0;
2403
2404 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2405 if (if_idx < if_start) {
2406 if_idx++;
2407 continue;
2408 }
2409 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2410 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2411 rdev, wdev) < 0) {
2412 goto out;
2413 }
2414 if_idx++;
2415 }
2416
2417 wp_idx++;
2418 }
2419 out:
2420 rtnl_unlock();
2421
2422 cb->args[0] = wp_idx;
2423 cb->args[1] = if_idx;
2424
2425 return skb->len;
2426 }
2427
2428 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2429 {
2430 struct sk_buff *msg;
2431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2432 struct wireless_dev *wdev = info->user_ptr[1];
2433
2434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2435 if (!msg)
2436 return -ENOMEM;
2437
2438 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2439 rdev, wdev) < 0) {
2440 nlmsg_free(msg);
2441 return -ENOBUFS;
2442 }
2443
2444 return genlmsg_reply(msg, info);
2445 }
2446
2447 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2448 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2449 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2450 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2451 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2452 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2453 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2454 };
2455
2456 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2457 {
2458 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2459 int flag;
2460
2461 *mntrflags = 0;
2462
2463 if (!nla)
2464 return -EINVAL;
2465
2466 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2467 nla, mntr_flags_policy))
2468 return -EINVAL;
2469
2470 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2471 if (flags[flag])
2472 *mntrflags |= (1<<flag);
2473
2474 return 0;
2475 }
2476
2477 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2478 struct net_device *netdev, u8 use_4addr,
2479 enum nl80211_iftype iftype)
2480 {
2481 if (!use_4addr) {
2482 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2483 return -EBUSY;
2484 return 0;
2485 }
2486
2487 switch (iftype) {
2488 case NL80211_IFTYPE_AP_VLAN:
2489 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2490 return 0;
2491 break;
2492 case NL80211_IFTYPE_STATION:
2493 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2494 return 0;
2495 break;
2496 default:
2497 break;
2498 }
2499
2500 return -EOPNOTSUPP;
2501 }
2502
2503 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2504 {
2505 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2506 struct vif_params params;
2507 int err;
2508 enum nl80211_iftype otype, ntype;
2509 struct net_device *dev = info->user_ptr[1];
2510 u32 _flags, *flags = NULL;
2511 bool change = false;
2512
2513 memset(&params, 0, sizeof(params));
2514
2515 otype = ntype = dev->ieee80211_ptr->iftype;
2516
2517 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2518 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2519 if (otype != ntype)
2520 change = true;
2521 if (ntype > NL80211_IFTYPE_MAX)
2522 return -EINVAL;
2523 }
2524
2525 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2526 struct wireless_dev *wdev = dev->ieee80211_ptr;
2527
2528 if (ntype != NL80211_IFTYPE_MESH_POINT)
2529 return -EINVAL;
2530 if (netif_running(dev))
2531 return -EBUSY;
2532
2533 wdev_lock(wdev);
2534 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2535 IEEE80211_MAX_MESH_ID_LEN);
2536 wdev->mesh_id_up_len =
2537 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2538 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2539 wdev->mesh_id_up_len);
2540 wdev_unlock(wdev);
2541 }
2542
2543 if (info->attrs[NL80211_ATTR_4ADDR]) {
2544 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2545 change = true;
2546 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2547 if (err)
2548 return err;
2549 } else {
2550 params.use_4addr = -1;
2551 }
2552
2553 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2554 if (ntype != NL80211_IFTYPE_MONITOR)
2555 return -EINVAL;
2556 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2557 &_flags);
2558 if (err)
2559 return err;
2560
2561 flags = &_flags;
2562 change = true;
2563 }
2564
2565 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2566 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2567 return -EOPNOTSUPP;
2568
2569 if (change)
2570 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2571 else
2572 err = 0;
2573
2574 if (!err && params.use_4addr != -1)
2575 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2576
2577 return err;
2578 }
2579
2580 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2581 {
2582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2583 struct vif_params params;
2584 struct wireless_dev *wdev;
2585 struct sk_buff *msg;
2586 int err;
2587 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2588 u32 flags;
2589
2590 /* to avoid failing a new interface creation due to pending removal */
2591 cfg80211_destroy_ifaces(rdev);
2592
2593 memset(&params, 0, sizeof(params));
2594
2595 if (!info->attrs[NL80211_ATTR_IFNAME])
2596 return -EINVAL;
2597
2598 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2599 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2600 if (type > NL80211_IFTYPE_MAX)
2601 return -EINVAL;
2602 }
2603
2604 if (!rdev->ops->add_virtual_intf ||
2605 !(rdev->wiphy.interface_modes & (1 << type)))
2606 return -EOPNOTSUPP;
2607
2608 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2609 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2610 ETH_ALEN);
2611 if (!is_valid_ether_addr(params.macaddr))
2612 return -EADDRNOTAVAIL;
2613 }
2614
2615 if (info->attrs[NL80211_ATTR_4ADDR]) {
2616 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2617 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2618 if (err)
2619 return err;
2620 }
2621
2622 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2623 if (!msg)
2624 return -ENOMEM;
2625
2626 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2627 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2628 &flags);
2629
2630 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2631 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2632 return -EOPNOTSUPP;
2633
2634 wdev = rdev_add_virtual_intf(rdev,
2635 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2636 type, err ? NULL : &flags, &params);
2637 if (IS_ERR(wdev)) {
2638 nlmsg_free(msg);
2639 return PTR_ERR(wdev);
2640 }
2641
2642 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2643 wdev->owner_nlportid = info->snd_portid;
2644
2645 switch (type) {
2646 case NL80211_IFTYPE_MESH_POINT:
2647 if (!info->attrs[NL80211_ATTR_MESH_ID])
2648 break;
2649 wdev_lock(wdev);
2650 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2651 IEEE80211_MAX_MESH_ID_LEN);
2652 wdev->mesh_id_up_len =
2653 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2654 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2655 wdev->mesh_id_up_len);
2656 wdev_unlock(wdev);
2657 break;
2658 case NL80211_IFTYPE_P2P_DEVICE:
2659 /*
2660 * P2P Device doesn't have a netdev, so doesn't go
2661 * through the netdev notifier and must be added here
2662 */
2663 mutex_init(&wdev->mtx);
2664 INIT_LIST_HEAD(&wdev->event_list);
2665 spin_lock_init(&wdev->event_lock);
2666 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2667 spin_lock_init(&wdev->mgmt_registrations_lock);
2668
2669 wdev->identifier = ++rdev->wdev_id;
2670 list_add_rcu(&wdev->list, &rdev->wdev_list);
2671 rdev->devlist_generation++;
2672 break;
2673 default:
2674 break;
2675 }
2676
2677 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2678 rdev, wdev) < 0) {
2679 nlmsg_free(msg);
2680 return -ENOBUFS;
2681 }
2682
2683 return genlmsg_reply(msg, info);
2684 }
2685
2686 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2687 {
2688 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2689 struct wireless_dev *wdev = info->user_ptr[1];
2690
2691 if (!rdev->ops->del_virtual_intf)
2692 return -EOPNOTSUPP;
2693
2694 /*
2695 * If we remove a wireless device without a netdev then clear
2696 * user_ptr[1] so that nl80211_post_doit won't dereference it
2697 * to check if it needs to do dev_put(). Otherwise it crashes
2698 * since the wdev has been freed, unlike with a netdev where
2699 * we need the dev_put() for the netdev to really be freed.
2700 */
2701 if (!wdev->netdev)
2702 info->user_ptr[1] = NULL;
2703
2704 return rdev_del_virtual_intf(rdev, wdev);
2705 }
2706
2707 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2708 {
2709 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2710 struct net_device *dev = info->user_ptr[1];
2711 u16 noack_map;
2712
2713 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2714 return -EINVAL;
2715
2716 if (!rdev->ops->set_noack_map)
2717 return -EOPNOTSUPP;
2718
2719 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2720
2721 return rdev_set_noack_map(rdev, dev, noack_map);
2722 }
2723
2724 struct get_key_cookie {
2725 struct sk_buff *msg;
2726 int error;
2727 int idx;
2728 };
2729
2730 static void get_key_callback(void *c, struct key_params *params)
2731 {
2732 struct nlattr *key;
2733 struct get_key_cookie *cookie = c;
2734
2735 if ((params->key &&
2736 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2737 params->key_len, params->key)) ||
2738 (params->seq &&
2739 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2740 params->seq_len, params->seq)) ||
2741 (params->cipher &&
2742 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2743 params->cipher)))
2744 goto nla_put_failure;
2745
2746 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2747 if (!key)
2748 goto nla_put_failure;
2749
2750 if ((params->key &&
2751 nla_put(cookie->msg, NL80211_KEY_DATA,
2752 params->key_len, params->key)) ||
2753 (params->seq &&
2754 nla_put(cookie->msg, NL80211_KEY_SEQ,
2755 params->seq_len, params->seq)) ||
2756 (params->cipher &&
2757 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2758 params->cipher)))
2759 goto nla_put_failure;
2760
2761 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2762 goto nla_put_failure;
2763
2764 nla_nest_end(cookie->msg, key);
2765
2766 return;
2767 nla_put_failure:
2768 cookie->error = 1;
2769 }
2770
2771 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2772 {
2773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2774 int err;
2775 struct net_device *dev = info->user_ptr[1];
2776 u8 key_idx = 0;
2777 const u8 *mac_addr = NULL;
2778 bool pairwise;
2779 struct get_key_cookie cookie = {
2780 .error = 0,
2781 };
2782 void *hdr;
2783 struct sk_buff *msg;
2784
2785 if (info->attrs[NL80211_ATTR_KEY_IDX])
2786 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2787
2788 if (key_idx > 5)
2789 return -EINVAL;
2790
2791 if (info->attrs[NL80211_ATTR_MAC])
2792 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2793
2794 pairwise = !!mac_addr;
2795 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2796 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2797 if (kt >= NUM_NL80211_KEYTYPES)
2798 return -EINVAL;
2799 if (kt != NL80211_KEYTYPE_GROUP &&
2800 kt != NL80211_KEYTYPE_PAIRWISE)
2801 return -EINVAL;
2802 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2803 }
2804
2805 if (!rdev->ops->get_key)
2806 return -EOPNOTSUPP;
2807
2808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2809 if (!msg)
2810 return -ENOMEM;
2811
2812 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2813 NL80211_CMD_NEW_KEY);
2814 if (!hdr)
2815 goto nla_put_failure;
2816
2817 cookie.msg = msg;
2818 cookie.idx = key_idx;
2819
2820 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2821 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2822 goto nla_put_failure;
2823 if (mac_addr &&
2824 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2825 goto nla_put_failure;
2826
2827 if (pairwise && mac_addr &&
2828 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2829 return -ENOENT;
2830
2831 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2832 get_key_callback);
2833
2834 if (err)
2835 goto free_msg;
2836
2837 if (cookie.error)
2838 goto nla_put_failure;
2839
2840 genlmsg_end(msg, hdr);
2841 return genlmsg_reply(msg, info);
2842
2843 nla_put_failure:
2844 err = -ENOBUFS;
2845 free_msg:
2846 nlmsg_free(msg);
2847 return err;
2848 }
2849
2850 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2851 {
2852 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2853 struct key_parse key;
2854 int err;
2855 struct net_device *dev = info->user_ptr[1];
2856
2857 err = nl80211_parse_key(info, &key);
2858 if (err)
2859 return err;
2860
2861 if (key.idx < 0)
2862 return -EINVAL;
2863
2864 /* only support setting default key */
2865 if (!key.def && !key.defmgmt)
2866 return -EINVAL;
2867
2868 wdev_lock(dev->ieee80211_ptr);
2869
2870 if (key.def) {
2871 if (!rdev->ops->set_default_key) {
2872 err = -EOPNOTSUPP;
2873 goto out;
2874 }
2875
2876 err = nl80211_key_allowed(dev->ieee80211_ptr);
2877 if (err)
2878 goto out;
2879
2880 err = rdev_set_default_key(rdev, dev, key.idx,
2881 key.def_uni, key.def_multi);
2882
2883 if (err)
2884 goto out;
2885
2886 #ifdef CONFIG_CFG80211_WEXT
2887 dev->ieee80211_ptr->wext.default_key = key.idx;
2888 #endif
2889 } else {
2890 if (key.def_uni || !key.def_multi) {
2891 err = -EINVAL;
2892 goto out;
2893 }
2894
2895 if (!rdev->ops->set_default_mgmt_key) {
2896 err = -EOPNOTSUPP;
2897 goto out;
2898 }
2899
2900 err = nl80211_key_allowed(dev->ieee80211_ptr);
2901 if (err)
2902 goto out;
2903
2904 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2905 if (err)
2906 goto out;
2907
2908 #ifdef CONFIG_CFG80211_WEXT
2909 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2910 #endif
2911 }
2912
2913 out:
2914 wdev_unlock(dev->ieee80211_ptr);
2915
2916 return err;
2917 }
2918
2919 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2920 {
2921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2922 int err;
2923 struct net_device *dev = info->user_ptr[1];
2924 struct key_parse key;
2925 const u8 *mac_addr = NULL;
2926
2927 err = nl80211_parse_key(info, &key);
2928 if (err)
2929 return err;
2930
2931 if (!key.p.key)
2932 return -EINVAL;
2933
2934 if (info->attrs[NL80211_ATTR_MAC])
2935 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2936
2937 if (key.type == -1) {
2938 if (mac_addr)
2939 key.type = NL80211_KEYTYPE_PAIRWISE;
2940 else
2941 key.type = NL80211_KEYTYPE_GROUP;
2942 }
2943
2944 /* for now */
2945 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2946 key.type != NL80211_KEYTYPE_GROUP)
2947 return -EINVAL;
2948
2949 if (!rdev->ops->add_key)
2950 return -EOPNOTSUPP;
2951
2952 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2953 key.type == NL80211_KEYTYPE_PAIRWISE,
2954 mac_addr))
2955 return -EINVAL;
2956
2957 wdev_lock(dev->ieee80211_ptr);
2958 err = nl80211_key_allowed(dev->ieee80211_ptr);
2959 if (!err)
2960 err = rdev_add_key(rdev, dev, key.idx,
2961 key.type == NL80211_KEYTYPE_PAIRWISE,
2962 mac_addr, &key.p);
2963 wdev_unlock(dev->ieee80211_ptr);
2964
2965 return err;
2966 }
2967
2968 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2969 {
2970 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2971 int err;
2972 struct net_device *dev = info->user_ptr[1];
2973 u8 *mac_addr = NULL;
2974 struct key_parse key;
2975
2976 err = nl80211_parse_key(info, &key);
2977 if (err)
2978 return err;
2979
2980 if (info->attrs[NL80211_ATTR_MAC])
2981 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2982
2983 if (key.type == -1) {
2984 if (mac_addr)
2985 key.type = NL80211_KEYTYPE_PAIRWISE;
2986 else
2987 key.type = NL80211_KEYTYPE_GROUP;
2988 }
2989
2990 /* for now */
2991 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2992 key.type != NL80211_KEYTYPE_GROUP)
2993 return -EINVAL;
2994
2995 if (!rdev->ops->del_key)
2996 return -EOPNOTSUPP;
2997
2998 wdev_lock(dev->ieee80211_ptr);
2999 err = nl80211_key_allowed(dev->ieee80211_ptr);
3000
3001 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3002 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3003 err = -ENOENT;
3004
3005 if (!err)
3006 err = rdev_del_key(rdev, dev, key.idx,
3007 key.type == NL80211_KEYTYPE_PAIRWISE,
3008 mac_addr);
3009
3010 #ifdef CONFIG_CFG80211_WEXT
3011 if (!err) {
3012 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3013 dev->ieee80211_ptr->wext.default_key = -1;
3014 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3015 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3016 }
3017 #endif
3018 wdev_unlock(dev->ieee80211_ptr);
3019
3020 return err;
3021 }
3022
3023 /* This function returns an error or the number of nested attributes */
3024 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3025 {
3026 struct nlattr *attr;
3027 int n_entries = 0, tmp;
3028
3029 nla_for_each_nested(attr, nl_attr, tmp) {
3030 if (nla_len(attr) != ETH_ALEN)
3031 return -EINVAL;
3032
3033 n_entries++;
3034 }
3035
3036 return n_entries;
3037 }
3038
3039 /*
3040 * This function parses ACL information and allocates memory for ACL data.
3041 * On successful return, the calling function is responsible to free the
3042 * ACL buffer returned by this function.
3043 */
3044 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3045 struct genl_info *info)
3046 {
3047 enum nl80211_acl_policy acl_policy;
3048 struct nlattr *attr;
3049 struct cfg80211_acl_data *acl;
3050 int i = 0, n_entries, tmp;
3051
3052 if (!wiphy->max_acl_mac_addrs)
3053 return ERR_PTR(-EOPNOTSUPP);
3054
3055 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3056 return ERR_PTR(-EINVAL);
3057
3058 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3059 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3060 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3061 return ERR_PTR(-EINVAL);
3062
3063 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3064 return ERR_PTR(-EINVAL);
3065
3066 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3067 if (n_entries < 0)
3068 return ERR_PTR(n_entries);
3069
3070 if (n_entries > wiphy->max_acl_mac_addrs)
3071 return ERR_PTR(-ENOTSUPP);
3072
3073 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3074 GFP_KERNEL);
3075 if (!acl)
3076 return ERR_PTR(-ENOMEM);
3077
3078 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3079 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3080 i++;
3081 }
3082
3083 acl->n_acl_entries = n_entries;
3084 acl->acl_policy = acl_policy;
3085
3086 return acl;
3087 }
3088
3089 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3090 {
3091 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3092 struct net_device *dev = info->user_ptr[1];
3093 struct cfg80211_acl_data *acl;
3094 int err;
3095
3096 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3097 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3098 return -EOPNOTSUPP;
3099
3100 if (!dev->ieee80211_ptr->beacon_interval)
3101 return -EINVAL;
3102
3103 acl = parse_acl_data(&rdev->wiphy, info);
3104 if (IS_ERR(acl))
3105 return PTR_ERR(acl);
3106
3107 err = rdev_set_mac_acl(rdev, dev, acl);
3108
3109 kfree(acl);
3110
3111 return err;
3112 }
3113
3114 static int nl80211_parse_beacon(struct nlattr *attrs[],
3115 struct cfg80211_beacon_data *bcn)
3116 {
3117 bool haveinfo = false;
3118
3119 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3120 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3121 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3122 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3123 return -EINVAL;
3124
3125 memset(bcn, 0, sizeof(*bcn));
3126
3127 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3128 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3129 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3130 if (!bcn->head_len)
3131 return -EINVAL;
3132 haveinfo = true;
3133 }
3134
3135 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3136 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3137 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3138 haveinfo = true;
3139 }
3140
3141 if (!haveinfo)
3142 return -EINVAL;
3143
3144 if (attrs[NL80211_ATTR_IE]) {
3145 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3146 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3147 }
3148
3149 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3150 bcn->proberesp_ies =
3151 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3152 bcn->proberesp_ies_len =
3153 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3154 }
3155
3156 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3157 bcn->assocresp_ies =
3158 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3159 bcn->assocresp_ies_len =
3160 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3161 }
3162
3163 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3164 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3165 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3166 }
3167
3168 return 0;
3169 }
3170
3171 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3172 struct cfg80211_ap_settings *params)
3173 {
3174 struct wireless_dev *wdev;
3175 bool ret = false;
3176
3177 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3178 if (wdev->iftype != NL80211_IFTYPE_AP &&
3179 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3180 continue;
3181
3182 if (!wdev->preset_chandef.chan)
3183 continue;
3184
3185 params->chandef = wdev->preset_chandef;
3186 ret = true;
3187 break;
3188 }
3189
3190 return ret;
3191 }
3192
3193 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3194 enum nl80211_auth_type auth_type,
3195 enum nl80211_commands cmd)
3196 {
3197 if (auth_type > NL80211_AUTHTYPE_MAX)
3198 return false;
3199
3200 switch (cmd) {
3201 case NL80211_CMD_AUTHENTICATE:
3202 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3203 auth_type == NL80211_AUTHTYPE_SAE)
3204 return false;
3205 return true;
3206 case NL80211_CMD_CONNECT:
3207 case NL80211_CMD_START_AP:
3208 /* SAE not supported yet */
3209 if (auth_type == NL80211_AUTHTYPE_SAE)
3210 return false;
3211 return true;
3212 default:
3213 return false;
3214 }
3215 }
3216
3217 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3218 {
3219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3220 struct net_device *dev = info->user_ptr[1];
3221 struct wireless_dev *wdev = dev->ieee80211_ptr;
3222 struct cfg80211_ap_settings params;
3223 int err;
3224
3225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3226 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3227 return -EOPNOTSUPP;
3228
3229 if (!rdev->ops->start_ap)
3230 return -EOPNOTSUPP;
3231
3232 if (wdev->beacon_interval)
3233 return -EALREADY;
3234
3235 memset(&params, 0, sizeof(params));
3236
3237 /* these are required for START_AP */
3238 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3239 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3240 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3241 return -EINVAL;
3242
3243 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3244 if (err)
3245 return err;
3246
3247 params.beacon_interval =
3248 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3249 params.dtim_period =
3250 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3251
3252 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3253 if (err)
3254 return err;
3255
3256 /*
3257 * In theory, some of these attributes should be required here
3258 * but since they were not used when the command was originally
3259 * added, keep them optional for old user space programs to let
3260 * them continue to work with drivers that do not need the
3261 * additional information -- drivers must check!
3262 */
3263 if (info->attrs[NL80211_ATTR_SSID]) {
3264 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3265 params.ssid_len =
3266 nla_len(info->attrs[NL80211_ATTR_SSID]);
3267 if (params.ssid_len == 0 ||
3268 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3269 return -EINVAL;
3270 }
3271
3272 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3273 params.hidden_ssid = nla_get_u32(
3274 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3275 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3276 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3277 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3278 return -EINVAL;
3279 }
3280
3281 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3282
3283 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3284 params.auth_type = nla_get_u32(
3285 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3286 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3287 NL80211_CMD_START_AP))
3288 return -EINVAL;
3289 } else
3290 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3291
3292 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3293 NL80211_MAX_NR_CIPHER_SUITES);
3294 if (err)
3295 return err;
3296
3297 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3298 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3299 return -EOPNOTSUPP;
3300 params.inactivity_timeout = nla_get_u16(
3301 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3302 }
3303
3304 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3305 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3306 return -EINVAL;
3307 params.p2p_ctwindow =
3308 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3309 if (params.p2p_ctwindow > 127)
3310 return -EINVAL;
3311 if (params.p2p_ctwindow != 0 &&
3312 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3313 return -EINVAL;
3314 }
3315
3316 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3317 u8 tmp;
3318
3319 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3320 return -EINVAL;
3321 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3322 if (tmp > 1)
3323 return -EINVAL;
3324 params.p2p_opp_ps = tmp;
3325 if (params.p2p_opp_ps != 0 &&
3326 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3327 return -EINVAL;
3328 }
3329
3330 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3331 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3332 if (err)
3333 return err;
3334 } else if (wdev->preset_chandef.chan) {
3335 params.chandef = wdev->preset_chandef;
3336 } else if (!nl80211_get_ap_channel(rdev, &params))
3337 return -EINVAL;
3338
3339 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3340 wdev->iftype))
3341 return -EINVAL;
3342
3343 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3344 params.acl = parse_acl_data(&rdev->wiphy, info);
3345 if (IS_ERR(params.acl))
3346 return PTR_ERR(params.acl);
3347 }
3348
3349 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3350 params.smps_mode =
3351 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3352 switch (params.smps_mode) {
3353 case NL80211_SMPS_OFF:
3354 break;
3355 case NL80211_SMPS_STATIC:
3356 if (!(rdev->wiphy.features &
3357 NL80211_FEATURE_STATIC_SMPS))
3358 return -EINVAL;
3359 break;
3360 case NL80211_SMPS_DYNAMIC:
3361 if (!(rdev->wiphy.features &
3362 NL80211_FEATURE_DYNAMIC_SMPS))
3363 return -EINVAL;
3364 break;
3365 default:
3366 return -EINVAL;
3367 }
3368 } else {
3369 params.smps_mode = NL80211_SMPS_OFF;
3370 }
3371
3372 wdev_lock(wdev);
3373 err = rdev_start_ap(rdev, dev, &params);
3374 if (!err) {
3375 wdev->preset_chandef = params.chandef;
3376 wdev->beacon_interval = params.beacon_interval;
3377 wdev->chandef = params.chandef;
3378 wdev->ssid_len = params.ssid_len;
3379 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3380 }
3381 wdev_unlock(wdev);
3382
3383 kfree(params.acl);
3384
3385 return err;
3386 }
3387
3388 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3389 {
3390 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3391 struct net_device *dev = info->user_ptr[1];
3392 struct wireless_dev *wdev = dev->ieee80211_ptr;
3393 struct cfg80211_beacon_data params;
3394 int err;
3395
3396 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3397 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3398 return -EOPNOTSUPP;
3399
3400 if (!rdev->ops->change_beacon)
3401 return -EOPNOTSUPP;
3402
3403 if (!wdev->beacon_interval)
3404 return -EINVAL;
3405
3406 err = nl80211_parse_beacon(info->attrs, &params);
3407 if (err)
3408 return err;
3409
3410 wdev_lock(wdev);
3411 err = rdev_change_beacon(rdev, dev, &params);
3412 wdev_unlock(wdev);
3413
3414 return err;
3415 }
3416
3417 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3418 {
3419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3420 struct net_device *dev = info->user_ptr[1];
3421
3422 return cfg80211_stop_ap(rdev, dev, false);
3423 }
3424
3425 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3426 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3427 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3428 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3429 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3430 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3431 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3432 };
3433
3434 static int parse_station_flags(struct genl_info *info,
3435 enum nl80211_iftype iftype,
3436 struct station_parameters *params)
3437 {
3438 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3439 struct nlattr *nla;
3440 int flag;
3441
3442 /*
3443 * Try parsing the new attribute first so userspace
3444 * can specify both for older kernels.
3445 */
3446 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3447 if (nla) {
3448 struct nl80211_sta_flag_update *sta_flags;
3449
3450 sta_flags = nla_data(nla);
3451 params->sta_flags_mask = sta_flags->mask;
3452 params->sta_flags_set = sta_flags->set;
3453 params->sta_flags_set &= params->sta_flags_mask;
3454 if ((params->sta_flags_mask |
3455 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3456 return -EINVAL;
3457 return 0;
3458 }
3459
3460 /* if present, parse the old attribute */
3461
3462 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3463 if (!nla)
3464 return 0;
3465
3466 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3467 nla, sta_flags_policy))
3468 return -EINVAL;
3469
3470 /*
3471 * Only allow certain flags for interface types so that
3472 * other attributes are silently ignored. Remember that
3473 * this is backward compatibility code with old userspace
3474 * and shouldn't be hit in other cases anyway.
3475 */
3476 switch (iftype) {
3477 case NL80211_IFTYPE_AP:
3478 case NL80211_IFTYPE_AP_VLAN:
3479 case NL80211_IFTYPE_P2P_GO:
3480 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3481 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3482 BIT(NL80211_STA_FLAG_WME) |
3483 BIT(NL80211_STA_FLAG_MFP);
3484 break;
3485 case NL80211_IFTYPE_P2P_CLIENT:
3486 case NL80211_IFTYPE_STATION:
3487 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3488 BIT(NL80211_STA_FLAG_TDLS_PEER);
3489 break;
3490 case NL80211_IFTYPE_MESH_POINT:
3491 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3492 BIT(NL80211_STA_FLAG_MFP) |
3493 BIT(NL80211_STA_FLAG_AUTHORIZED);
3494 default:
3495 return -EINVAL;
3496 }
3497
3498 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3499 if (flags[flag]) {
3500 params->sta_flags_set |= (1<<flag);
3501
3502 /* no longer support new API additions in old API */
3503 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3504 return -EINVAL;
3505 }
3506 }
3507
3508 return 0;
3509 }
3510
3511 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3512 int attr)
3513 {
3514 struct nlattr *rate;
3515 u32 bitrate;
3516 u16 bitrate_compat;
3517
3518 rate = nla_nest_start(msg, attr);
3519 if (!rate)
3520 return false;
3521
3522 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3523 bitrate = cfg80211_calculate_bitrate(info);
3524 /* report 16-bit bitrate only if we can */
3525 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3526 if (bitrate > 0 &&
3527 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3528 return false;
3529 if (bitrate_compat > 0 &&
3530 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3531 return false;
3532
3533 if (info->flags & RATE_INFO_FLAGS_MCS) {
3534 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3535 return false;
3536 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3537 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3538 return false;
3539 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3540 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3541 return false;
3542 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3543 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3544 return false;
3545 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3546 return false;
3547 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3548 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3549 return false;
3550 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3551 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3552 return false;
3553 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3554 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3555 return false;
3556 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3557 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3558 return false;
3559 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3560 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3561 return false;
3562 }
3563
3564 nla_nest_end(msg, rate);
3565 return true;
3566 }
3567
3568 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3569 int id)
3570 {
3571 void *attr;
3572 int i = 0;
3573
3574 if (!mask)
3575 return true;
3576
3577 attr = nla_nest_start(msg, id);
3578 if (!attr)
3579 return false;
3580
3581 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3582 if (!(mask & BIT(i)))
3583 continue;
3584
3585 if (nla_put_u8(msg, i, signal[i]))
3586 return false;
3587 }
3588
3589 nla_nest_end(msg, attr);
3590
3591 return true;
3592 }
3593
3594 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3595 int flags,
3596 struct cfg80211_registered_device *rdev,
3597 struct net_device *dev,
3598 const u8 *mac_addr, struct station_info *sinfo)
3599 {
3600 void *hdr;
3601 struct nlattr *sinfoattr, *bss_param;
3602
3603 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3604 if (!hdr)
3605 return -1;
3606
3607 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3608 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3609 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3610 goto nla_put_failure;
3611
3612 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3613 if (!sinfoattr)
3614 goto nla_put_failure;
3615 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3616 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3617 sinfo->connected_time))
3618 goto nla_put_failure;
3619 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3620 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3621 sinfo->inactive_time))
3622 goto nla_put_failure;
3623 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3624 STATION_INFO_RX_BYTES64)) &&
3625 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3626 (u32)sinfo->rx_bytes))
3627 goto nla_put_failure;
3628 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3629 STATION_INFO_TX_BYTES64)) &&
3630 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3631 (u32)sinfo->tx_bytes))
3632 goto nla_put_failure;
3633 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3634 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3635 sinfo->rx_bytes))
3636 goto nla_put_failure;
3637 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3638 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3639 sinfo->tx_bytes))
3640 goto nla_put_failure;
3641 if ((sinfo->filled & STATION_INFO_LLID) &&
3642 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3643 goto nla_put_failure;
3644 if ((sinfo->filled & STATION_INFO_PLID) &&
3645 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3646 goto nla_put_failure;
3647 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3648 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3649 sinfo->plink_state))
3650 goto nla_put_failure;
3651 switch (rdev->wiphy.signal_type) {
3652 case CFG80211_SIGNAL_TYPE_MBM:
3653 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3654 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3655 sinfo->signal))
3656 goto nla_put_failure;
3657 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3658 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3659 sinfo->signal_avg))
3660 goto nla_put_failure;
3661 break;
3662 default:
3663 break;
3664 }
3665 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3666 if (!nl80211_put_signal(msg, sinfo->chains,
3667 sinfo->chain_signal,
3668 NL80211_STA_INFO_CHAIN_SIGNAL))
3669 goto nla_put_failure;
3670 }
3671 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3672 if (!nl80211_put_signal(msg, sinfo->chains,
3673 sinfo->chain_signal_avg,
3674 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3675 goto nla_put_failure;
3676 }
3677 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3678 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3679 NL80211_STA_INFO_TX_BITRATE))
3680 goto nla_put_failure;
3681 }
3682 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3683 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3684 NL80211_STA_INFO_RX_BITRATE))
3685 goto nla_put_failure;
3686 }
3687 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3688 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3689 sinfo->rx_packets))
3690 goto nla_put_failure;
3691 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3692 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3693 sinfo->tx_packets))
3694 goto nla_put_failure;
3695 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3696 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3697 sinfo->tx_retries))
3698 goto nla_put_failure;
3699 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3700 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3701 sinfo->tx_failed))
3702 goto nla_put_failure;
3703 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3704 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3705 sinfo->expected_throughput))
3706 goto nla_put_failure;
3707 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3708 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3709 sinfo->beacon_loss_count))
3710 goto nla_put_failure;
3711 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3712 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3713 sinfo->local_pm))
3714 goto nla_put_failure;
3715 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3716 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3717 sinfo->peer_pm))
3718 goto nla_put_failure;
3719 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3720 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3721 sinfo->nonpeer_pm))
3722 goto nla_put_failure;
3723 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3724 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3725 if (!bss_param)
3726 goto nla_put_failure;
3727
3728 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3729 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3730 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3731 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3732 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3733 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3734 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3735 sinfo->bss_param.dtim_period) ||
3736 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3737 sinfo->bss_param.beacon_interval))
3738 goto nla_put_failure;
3739
3740 nla_nest_end(msg, bss_param);
3741 }
3742 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3743 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3744 sizeof(struct nl80211_sta_flag_update),
3745 &sinfo->sta_flags))
3746 goto nla_put_failure;
3747 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3748 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3749 sinfo->t_offset))
3750 goto nla_put_failure;
3751 nla_nest_end(msg, sinfoattr);
3752
3753 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3754 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3755 sinfo->assoc_req_ies))
3756 goto nla_put_failure;
3757
3758 return genlmsg_end(msg, hdr);
3759
3760 nla_put_failure:
3761 genlmsg_cancel(msg, hdr);
3762 return -EMSGSIZE;
3763 }
3764
3765 static int nl80211_dump_station(struct sk_buff *skb,
3766 struct netlink_callback *cb)
3767 {
3768 struct station_info sinfo;
3769 struct cfg80211_registered_device *rdev;
3770 struct wireless_dev *wdev;
3771 u8 mac_addr[ETH_ALEN];
3772 int sta_idx = cb->args[2];
3773 int err;
3774
3775 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3776 if (err)
3777 return err;
3778
3779 if (!wdev->netdev) {
3780 err = -EINVAL;
3781 goto out_err;
3782 }
3783
3784 if (!rdev->ops->dump_station) {
3785 err = -EOPNOTSUPP;
3786 goto out_err;
3787 }
3788
3789 while (1) {
3790 memset(&sinfo, 0, sizeof(sinfo));
3791 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3792 mac_addr, &sinfo);
3793 if (err == -ENOENT)
3794 break;
3795 if (err)
3796 goto out_err;
3797
3798 if (nl80211_send_station(skb,
3799 NETLINK_CB(cb->skb).portid,
3800 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3801 rdev, wdev->netdev, mac_addr,
3802 &sinfo) < 0)
3803 goto out;
3804
3805 sta_idx++;
3806 }
3807
3808
3809 out:
3810 cb->args[2] = sta_idx;
3811 err = skb->len;
3812 out_err:
3813 nl80211_finish_wdev_dump(rdev);
3814
3815 return err;
3816 }
3817
3818 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3819 {
3820 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3821 struct net_device *dev = info->user_ptr[1];
3822 struct station_info sinfo;
3823 struct sk_buff *msg;
3824 u8 *mac_addr = NULL;
3825 int err;
3826
3827 memset(&sinfo, 0, sizeof(sinfo));
3828
3829 if (!info->attrs[NL80211_ATTR_MAC])
3830 return -EINVAL;
3831
3832 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3833
3834 if (!rdev->ops->get_station)
3835 return -EOPNOTSUPP;
3836
3837 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3838 if (err)
3839 return err;
3840
3841 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3842 if (!msg)
3843 return -ENOMEM;
3844
3845 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3846 rdev, dev, mac_addr, &sinfo) < 0) {
3847 nlmsg_free(msg);
3848 return -ENOBUFS;
3849 }
3850
3851 return genlmsg_reply(msg, info);
3852 }
3853
3854 int cfg80211_check_station_change(struct wiphy *wiphy,
3855 struct station_parameters *params,
3856 enum cfg80211_station_type statype)
3857 {
3858 if (params->listen_interval != -1)
3859 return -EINVAL;
3860 if (params->aid &&
3861 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3862 return -EINVAL;
3863
3864 /* When you run into this, adjust the code below for the new flag */
3865 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3866
3867 switch (statype) {
3868 case CFG80211_STA_MESH_PEER_KERNEL:
3869 case CFG80211_STA_MESH_PEER_USER:
3870 /*
3871 * No ignoring the TDLS flag here -- the userspace mesh
3872 * code doesn't have the bug of including TDLS in the
3873 * mask everywhere.
3874 */
3875 if (params->sta_flags_mask &
3876 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3877 BIT(NL80211_STA_FLAG_MFP) |
3878 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3879 return -EINVAL;
3880 break;
3881 case CFG80211_STA_TDLS_PEER_SETUP:
3882 case CFG80211_STA_TDLS_PEER_ACTIVE:
3883 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3884 return -EINVAL;
3885 /* ignore since it can't change */
3886 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3887 break;
3888 default:
3889 /* disallow mesh-specific things */
3890 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3891 return -EINVAL;
3892 if (params->local_pm)
3893 return -EINVAL;
3894 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3895 return -EINVAL;
3896 }
3897
3898 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3899 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3900 /* TDLS can't be set, ... */
3901 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3902 return -EINVAL;
3903 /*
3904 * ... but don't bother the driver with it. This works around
3905 * a hostapd/wpa_supplicant issue -- it always includes the
3906 * TLDS_PEER flag in the mask even for AP mode.
3907 */
3908 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3909 }
3910
3911 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3912 /* reject other things that can't change */
3913 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3914 return -EINVAL;
3915 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3916 return -EINVAL;
3917 if (params->supported_rates)
3918 return -EINVAL;
3919 if (params->ext_capab || params->ht_capa || params->vht_capa)
3920 return -EINVAL;
3921 }
3922
3923 if (statype != CFG80211_STA_AP_CLIENT) {
3924 if (params->vlan)
3925 return -EINVAL;
3926 }
3927
3928 switch (statype) {
3929 case CFG80211_STA_AP_MLME_CLIENT:
3930 /* Use this only for authorizing/unauthorizing a station */
3931 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3932 return -EOPNOTSUPP;
3933 break;
3934 case CFG80211_STA_AP_CLIENT:
3935 /* accept only the listed bits */
3936 if (params->sta_flags_mask &
3937 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3938 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3939 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3940 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3941 BIT(NL80211_STA_FLAG_WME) |
3942 BIT(NL80211_STA_FLAG_MFP)))
3943 return -EINVAL;
3944
3945 /* but authenticated/associated only if driver handles it */
3946 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3947 params->sta_flags_mask &
3948 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3949 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3950 return -EINVAL;
3951 break;
3952 case CFG80211_STA_IBSS:
3953 case CFG80211_STA_AP_STA:
3954 /* reject any changes other than AUTHORIZED */
3955 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3956 return -EINVAL;
3957 break;
3958 case CFG80211_STA_TDLS_PEER_SETUP:
3959 /* reject any changes other than AUTHORIZED or WME */
3960 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3961 BIT(NL80211_STA_FLAG_WME)))
3962 return -EINVAL;
3963 /* force (at least) rates when authorizing */
3964 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3965 !params->supported_rates)
3966 return -EINVAL;
3967 break;
3968 case CFG80211_STA_TDLS_PEER_ACTIVE:
3969 /* reject any changes */
3970 return -EINVAL;
3971 case CFG80211_STA_MESH_PEER_KERNEL:
3972 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3973 return -EINVAL;
3974 break;
3975 case CFG80211_STA_MESH_PEER_USER:
3976 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3977 return -EINVAL;
3978 break;
3979 }
3980
3981 return 0;
3982 }
3983 EXPORT_SYMBOL(cfg80211_check_station_change);
3984
3985 /*
3986 * Get vlan interface making sure it is running and on the right wiphy.
3987 */
3988 static struct net_device *get_vlan(struct genl_info *info,
3989 struct cfg80211_registered_device *rdev)
3990 {
3991 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3992 struct net_device *v;
3993 int ret;
3994
3995 if (!vlanattr)
3996 return NULL;
3997
3998 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3999 if (!v)
4000 return ERR_PTR(-ENODEV);
4001
4002 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4003 ret = -EINVAL;
4004 goto error;
4005 }
4006
4007 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4008 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4009 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4010 ret = -EINVAL;
4011 goto error;
4012 }
4013
4014 if (!netif_running(v)) {
4015 ret = -ENETDOWN;
4016 goto error;
4017 }
4018
4019 return v;
4020 error:
4021 dev_put(v);
4022 return ERR_PTR(ret);
4023 }
4024
4025 static const struct nla_policy
4026 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4027 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4028 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4029 };
4030
4031 static int nl80211_parse_sta_wme(struct genl_info *info,
4032 struct station_parameters *params)
4033 {
4034 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4035 struct nlattr *nla;
4036 int err;
4037
4038 /* parse WME attributes if present */
4039 if (!info->attrs[NL80211_ATTR_STA_WME])
4040 return 0;
4041
4042 nla = info->attrs[NL80211_ATTR_STA_WME];
4043 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4044 nl80211_sta_wme_policy);
4045 if (err)
4046 return err;
4047
4048 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4049 params->uapsd_queues = nla_get_u8(
4050 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4051 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4052 return -EINVAL;
4053
4054 if (tb[NL80211_STA_WME_MAX_SP])
4055 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4056
4057 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4058 return -EINVAL;
4059
4060 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4061
4062 return 0;
4063 }
4064
4065 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4066 struct station_parameters *params)
4067 {
4068 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4069 params->supported_channels =
4070 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4071 params->supported_channels_len =
4072 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4073 /*
4074 * Need to include at least one (first channel, number of
4075 * channels) tuple for each subband, and must have proper
4076 * tuples for the rest of the data as well.
4077 */
4078 if (params->supported_channels_len < 2)
4079 return -EINVAL;
4080 if (params->supported_channels_len % 2)
4081 return -EINVAL;
4082 }
4083
4084 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4085 params->supported_oper_classes =
4086 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4087 params->supported_oper_classes_len =
4088 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4089 /*
4090 * The value of the Length field of the Supported Operating
4091 * Classes element is between 2 and 253.
4092 */
4093 if (params->supported_oper_classes_len < 2 ||
4094 params->supported_oper_classes_len > 253)
4095 return -EINVAL;
4096 }
4097 return 0;
4098 }
4099
4100 static int nl80211_set_station_tdls(struct genl_info *info,
4101 struct station_parameters *params)
4102 {
4103 int err;
4104 /* Dummy STA entry gets updated once the peer capabilities are known */
4105 if (info->attrs[NL80211_ATTR_PEER_AID])
4106 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4107 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4108 params->ht_capa =
4109 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4110 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4111 params->vht_capa =
4112 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4113
4114 err = nl80211_parse_sta_channel_info(info, params);
4115 if (err)
4116 return err;
4117
4118 return nl80211_parse_sta_wme(info, params);
4119 }
4120
4121 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4122 {
4123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4124 struct net_device *dev = info->user_ptr[1];
4125 struct station_parameters params;
4126 u8 *mac_addr;
4127 int err;
4128
4129 memset(&params, 0, sizeof(params));
4130
4131 params.listen_interval = -1;
4132
4133 if (!rdev->ops->change_station)
4134 return -EOPNOTSUPP;
4135
4136 if (info->attrs[NL80211_ATTR_STA_AID])
4137 return -EINVAL;
4138
4139 if (!info->attrs[NL80211_ATTR_MAC])
4140 return -EINVAL;
4141
4142 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4143
4144 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4145 params.supported_rates =
4146 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4147 params.supported_rates_len =
4148 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4149 }
4150
4151 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4152 params.capability =
4153 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4154 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4155 }
4156
4157 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4158 params.ext_capab =
4159 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4160 params.ext_capab_len =
4161 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4162 }
4163
4164 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4165 return -EINVAL;
4166
4167 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4168 return -EINVAL;
4169
4170 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4171 params.plink_action =
4172 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4173 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4174 return -EINVAL;
4175 }
4176
4177 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4178 params.plink_state =
4179 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4180 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4181 return -EINVAL;
4182 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4183 }
4184
4185 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4186 enum nl80211_mesh_power_mode pm = nla_get_u32(
4187 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4188
4189 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4190 pm > NL80211_MESH_POWER_MAX)
4191 return -EINVAL;
4192
4193 params.local_pm = pm;
4194 }
4195
4196 /* Include parameters for TDLS peer (will check later) */
4197 err = nl80211_set_station_tdls(info, &params);
4198 if (err)
4199 return err;
4200
4201 params.vlan = get_vlan(info, rdev);
4202 if (IS_ERR(params.vlan))
4203 return PTR_ERR(params.vlan);
4204
4205 switch (dev->ieee80211_ptr->iftype) {
4206 case NL80211_IFTYPE_AP:
4207 case NL80211_IFTYPE_AP_VLAN:
4208 case NL80211_IFTYPE_P2P_GO:
4209 case NL80211_IFTYPE_P2P_CLIENT:
4210 case NL80211_IFTYPE_STATION:
4211 case NL80211_IFTYPE_ADHOC:
4212 case NL80211_IFTYPE_MESH_POINT:
4213 break;
4214 default:
4215 err = -EOPNOTSUPP;
4216 goto out_put_vlan;
4217 }
4218
4219 /* driver will call cfg80211_check_station_change() */
4220 err = rdev_change_station(rdev, dev, mac_addr, &params);
4221
4222 out_put_vlan:
4223 if (params.vlan)
4224 dev_put(params.vlan);
4225
4226 return err;
4227 }
4228
4229 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4230 {
4231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4232 int err;
4233 struct net_device *dev = info->user_ptr[1];
4234 struct station_parameters params;
4235 u8 *mac_addr = NULL;
4236
4237 memset(&params, 0, sizeof(params));
4238
4239 if (!rdev->ops->add_station)
4240 return -EOPNOTSUPP;
4241
4242 if (!info->attrs[NL80211_ATTR_MAC])
4243 return -EINVAL;
4244
4245 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4246 return -EINVAL;
4247
4248 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4249 return -EINVAL;
4250
4251 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4252 !info->attrs[NL80211_ATTR_PEER_AID])
4253 return -EINVAL;
4254
4255 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4256 params.supported_rates =
4257 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4258 params.supported_rates_len =
4259 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4260 params.listen_interval =
4261 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4262
4263 if (info->attrs[NL80211_ATTR_PEER_AID])
4264 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4265 else
4266 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4267 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4268 return -EINVAL;
4269
4270 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4271 params.capability =
4272 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4273 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4274 }
4275
4276 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4277 params.ext_capab =
4278 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4279 params.ext_capab_len =
4280 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4281 }
4282
4283 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4284 params.ht_capa =
4285 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4286
4287 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4288 params.vht_capa =
4289 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4290
4291 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4292 params.opmode_notif_used = true;
4293 params.opmode_notif =
4294 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4295 }
4296
4297 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4298 params.plink_action =
4299 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4300 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4301 return -EINVAL;
4302 }
4303
4304 err = nl80211_parse_sta_channel_info(info, &params);
4305 if (err)
4306 return err;
4307
4308 err = nl80211_parse_sta_wme(info, &params);
4309 if (err)
4310 return err;
4311
4312 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4313 return -EINVAL;
4314
4315 /* When you run into this, adjust the code below for the new flag */
4316 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4317
4318 switch (dev->ieee80211_ptr->iftype) {
4319 case NL80211_IFTYPE_AP:
4320 case NL80211_IFTYPE_AP_VLAN:
4321 case NL80211_IFTYPE_P2P_GO:
4322 /* ignore WME attributes if iface/sta is not capable */
4323 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4324 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4325 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4326
4327 /* TDLS peers cannot be added */
4328 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4329 info->attrs[NL80211_ATTR_PEER_AID])
4330 return -EINVAL;
4331 /* but don't bother the driver with it */
4332 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4333
4334 /* allow authenticated/associated only if driver handles it */
4335 if (!(rdev->wiphy.features &
4336 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4337 params.sta_flags_mask &
4338 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4339 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4340 return -EINVAL;
4341
4342 /* must be last in here for error handling */
4343 params.vlan = get_vlan(info, rdev);
4344 if (IS_ERR(params.vlan))
4345 return PTR_ERR(params.vlan);
4346 break;
4347 case NL80211_IFTYPE_MESH_POINT:
4348 /* ignore uAPSD data */
4349 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4350
4351 /* associated is disallowed */
4352 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4353 return -EINVAL;
4354 /* TDLS peers cannot be added */
4355 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4356 info->attrs[NL80211_ATTR_PEER_AID])
4357 return -EINVAL;
4358 break;
4359 case NL80211_IFTYPE_STATION:
4360 case NL80211_IFTYPE_P2P_CLIENT:
4361 /* ignore uAPSD data */
4362 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4363
4364 /* these are disallowed */
4365 if (params.sta_flags_mask &
4366 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4367 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4368 return -EINVAL;
4369 /* Only TDLS peers can be added */
4370 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4371 return -EINVAL;
4372 /* Can only add if TDLS ... */
4373 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4374 return -EOPNOTSUPP;
4375 /* ... with external setup is supported */
4376 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4377 return -EOPNOTSUPP;
4378 /*
4379 * Older wpa_supplicant versions always mark the TDLS peer
4380 * as authorized, but it shouldn't yet be.
4381 */
4382 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4383 break;
4384 default:
4385 return -EOPNOTSUPP;
4386 }
4387
4388 /* be aware of params.vlan when changing code here */
4389
4390 err = rdev_add_station(rdev, dev, mac_addr, &params);
4391
4392 if (params.vlan)
4393 dev_put(params.vlan);
4394 return err;
4395 }
4396
4397 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4398 {
4399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4400 struct net_device *dev = info->user_ptr[1];
4401 u8 *mac_addr = NULL;
4402
4403 if (info->attrs[NL80211_ATTR_MAC])
4404 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4405
4406 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4407 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4408 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4409 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4410 return -EINVAL;
4411
4412 if (!rdev->ops->del_station)
4413 return -EOPNOTSUPP;
4414
4415 return rdev_del_station(rdev, dev, mac_addr);
4416 }
4417
4418 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4419 int flags, struct net_device *dev,
4420 u8 *dst, u8 *next_hop,
4421 struct mpath_info *pinfo)
4422 {
4423 void *hdr;
4424 struct nlattr *pinfoattr;
4425
4426 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4427 if (!hdr)
4428 return -1;
4429
4430 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4431 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4432 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4433 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4434 goto nla_put_failure;
4435
4436 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4437 if (!pinfoattr)
4438 goto nla_put_failure;
4439 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4440 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4441 pinfo->frame_qlen))
4442 goto nla_put_failure;
4443 if (((pinfo->filled & MPATH_INFO_SN) &&
4444 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4445 ((pinfo->filled & MPATH_INFO_METRIC) &&
4446 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4447 pinfo->metric)) ||
4448 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4449 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4450 pinfo->exptime)) ||
4451 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4452 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4453 pinfo->flags)) ||
4454 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4455 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4456 pinfo->discovery_timeout)) ||
4457 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4458 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4459 pinfo->discovery_retries)))
4460 goto nla_put_failure;
4461
4462 nla_nest_end(msg, pinfoattr);
4463
4464 return genlmsg_end(msg, hdr);
4465
4466 nla_put_failure:
4467 genlmsg_cancel(msg, hdr);
4468 return -EMSGSIZE;
4469 }
4470
4471 static int nl80211_dump_mpath(struct sk_buff *skb,
4472 struct netlink_callback *cb)
4473 {
4474 struct mpath_info pinfo;
4475 struct cfg80211_registered_device *rdev;
4476 struct wireless_dev *wdev;
4477 u8 dst[ETH_ALEN];
4478 u8 next_hop[ETH_ALEN];
4479 int path_idx = cb->args[2];
4480 int err;
4481
4482 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4483 if (err)
4484 return err;
4485
4486 if (!rdev->ops->dump_mpath) {
4487 err = -EOPNOTSUPP;
4488 goto out_err;
4489 }
4490
4491 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4492 err = -EOPNOTSUPP;
4493 goto out_err;
4494 }
4495
4496 while (1) {
4497 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4498 next_hop, &pinfo);
4499 if (err == -ENOENT)
4500 break;
4501 if (err)
4502 goto out_err;
4503
4504 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4505 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4506 wdev->netdev, dst, next_hop,
4507 &pinfo) < 0)
4508 goto out;
4509
4510 path_idx++;
4511 }
4512
4513
4514 out:
4515 cb->args[2] = path_idx;
4516 err = skb->len;
4517 out_err:
4518 nl80211_finish_wdev_dump(rdev);
4519 return err;
4520 }
4521
4522 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4523 {
4524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4525 int err;
4526 struct net_device *dev = info->user_ptr[1];
4527 struct mpath_info pinfo;
4528 struct sk_buff *msg;
4529 u8 *dst = NULL;
4530 u8 next_hop[ETH_ALEN];
4531
4532 memset(&pinfo, 0, sizeof(pinfo));
4533
4534 if (!info->attrs[NL80211_ATTR_MAC])
4535 return -EINVAL;
4536
4537 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4538
4539 if (!rdev->ops->get_mpath)
4540 return -EOPNOTSUPP;
4541
4542 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4543 return -EOPNOTSUPP;
4544
4545 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4546 if (err)
4547 return err;
4548
4549 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4550 if (!msg)
4551 return -ENOMEM;
4552
4553 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4554 dev, dst, next_hop, &pinfo) < 0) {
4555 nlmsg_free(msg);
4556 return -ENOBUFS;
4557 }
4558
4559 return genlmsg_reply(msg, info);
4560 }
4561
4562 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4563 {
4564 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4565 struct net_device *dev = info->user_ptr[1];
4566 u8 *dst = NULL;
4567 u8 *next_hop = NULL;
4568
4569 if (!info->attrs[NL80211_ATTR_MAC])
4570 return -EINVAL;
4571
4572 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4573 return -EINVAL;
4574
4575 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4576 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4577
4578 if (!rdev->ops->change_mpath)
4579 return -EOPNOTSUPP;
4580
4581 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4582 return -EOPNOTSUPP;
4583
4584 return rdev_change_mpath(rdev, dev, dst, next_hop);
4585 }
4586
4587 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4588 {
4589 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4590 struct net_device *dev = info->user_ptr[1];
4591 u8 *dst = NULL;
4592 u8 *next_hop = NULL;
4593
4594 if (!info->attrs[NL80211_ATTR_MAC])
4595 return -EINVAL;
4596
4597 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4598 return -EINVAL;
4599
4600 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4601 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4602
4603 if (!rdev->ops->add_mpath)
4604 return -EOPNOTSUPP;
4605
4606 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4607 return -EOPNOTSUPP;
4608
4609 return rdev_add_mpath(rdev, dev, dst, next_hop);
4610 }
4611
4612 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4613 {
4614 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4615 struct net_device *dev = info->user_ptr[1];
4616 u8 *dst = NULL;
4617
4618 if (info->attrs[NL80211_ATTR_MAC])
4619 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4620
4621 if (!rdev->ops->del_mpath)
4622 return -EOPNOTSUPP;
4623
4624 return rdev_del_mpath(rdev, dev, dst);
4625 }
4626
4627 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4628 {
4629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4630 struct net_device *dev = info->user_ptr[1];
4631 struct wireless_dev *wdev = dev->ieee80211_ptr;
4632 struct bss_parameters params;
4633 int err;
4634
4635 memset(&params, 0, sizeof(params));
4636 /* default to not changing parameters */
4637 params.use_cts_prot = -1;
4638 params.use_short_preamble = -1;
4639 params.use_short_slot_time = -1;
4640 params.ap_isolate = -1;
4641 params.ht_opmode = -1;
4642 params.p2p_ctwindow = -1;
4643 params.p2p_opp_ps = -1;
4644
4645 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4646 params.use_cts_prot =
4647 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4648 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4649 params.use_short_preamble =
4650 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4651 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4652 params.use_short_slot_time =
4653 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4654 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4655 params.basic_rates =
4656 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4657 params.basic_rates_len =
4658 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4659 }
4660 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4661 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4662 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4663 params.ht_opmode =
4664 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4665
4666 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4667 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4668 return -EINVAL;
4669 params.p2p_ctwindow =
4670 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4671 if (params.p2p_ctwindow < 0)
4672 return -EINVAL;
4673 if (params.p2p_ctwindow != 0 &&
4674 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4675 return -EINVAL;
4676 }
4677
4678 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4679 u8 tmp;
4680
4681 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4682 return -EINVAL;
4683 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4684 if (tmp > 1)
4685 return -EINVAL;
4686 params.p2p_opp_ps = tmp;
4687 if (params.p2p_opp_ps &&
4688 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4689 return -EINVAL;
4690 }
4691
4692 if (!rdev->ops->change_bss)
4693 return -EOPNOTSUPP;
4694
4695 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4696 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4697 return -EOPNOTSUPP;
4698
4699 wdev_lock(wdev);
4700 err = rdev_change_bss(rdev, dev, &params);
4701 wdev_unlock(wdev);
4702
4703 return err;
4704 }
4705
4706 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4707 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4708 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4709 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4710 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4711 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4712 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4713 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4714 };
4715
4716 static int parse_reg_rule(struct nlattr *tb[],
4717 struct ieee80211_reg_rule *reg_rule)
4718 {
4719 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4720 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4721
4722 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4723 return -EINVAL;
4724 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4725 return -EINVAL;
4726 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4727 return -EINVAL;
4728 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4729 return -EINVAL;
4730 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4731 return -EINVAL;
4732
4733 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4734
4735 freq_range->start_freq_khz =
4736 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4737 freq_range->end_freq_khz =
4738 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4739 freq_range->max_bandwidth_khz =
4740 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4741
4742 power_rule->max_eirp =
4743 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4744
4745 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4746 power_rule->max_antenna_gain =
4747 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4748
4749 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4750 reg_rule->dfs_cac_ms =
4751 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4752
4753 return 0;
4754 }
4755
4756 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4757 {
4758 char *data = NULL;
4759 enum nl80211_user_reg_hint_type user_reg_hint_type;
4760
4761 /*
4762 * You should only get this when cfg80211 hasn't yet initialized
4763 * completely when built-in to the kernel right between the time
4764 * window between nl80211_init() and regulatory_init(), if that is
4765 * even possible.
4766 */
4767 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4768 return -EINPROGRESS;
4769
4770 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4771 user_reg_hint_type =
4772 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4773 else
4774 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4775
4776 switch (user_reg_hint_type) {
4777 case NL80211_USER_REG_HINT_USER:
4778 case NL80211_USER_REG_HINT_CELL_BASE:
4779 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4780 return -EINVAL;
4781
4782 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4783 return regulatory_hint_user(data, user_reg_hint_type);
4784 case NL80211_USER_REG_HINT_INDOOR:
4785 return regulatory_hint_indoor_user();
4786 default:
4787 return -EINVAL;
4788 }
4789 }
4790
4791 static int nl80211_get_mesh_config(struct sk_buff *skb,
4792 struct genl_info *info)
4793 {
4794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4795 struct net_device *dev = info->user_ptr[1];
4796 struct wireless_dev *wdev = dev->ieee80211_ptr;
4797 struct mesh_config cur_params;
4798 int err = 0;
4799 void *hdr;
4800 struct nlattr *pinfoattr;
4801 struct sk_buff *msg;
4802
4803 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4804 return -EOPNOTSUPP;
4805
4806 if (!rdev->ops->get_mesh_config)
4807 return -EOPNOTSUPP;
4808
4809 wdev_lock(wdev);
4810 /* If not connected, get default parameters */
4811 if (!wdev->mesh_id_len)
4812 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4813 else
4814 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4815 wdev_unlock(wdev);
4816
4817 if (err)
4818 return err;
4819
4820 /* Draw up a netlink message to send back */
4821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4822 if (!msg)
4823 return -ENOMEM;
4824 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4825 NL80211_CMD_GET_MESH_CONFIG);
4826 if (!hdr)
4827 goto out;
4828 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4829 if (!pinfoattr)
4830 goto nla_put_failure;
4831 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4832 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4833 cur_params.dot11MeshRetryTimeout) ||
4834 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4835 cur_params.dot11MeshConfirmTimeout) ||
4836 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4837 cur_params.dot11MeshHoldingTimeout) ||
4838 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4839 cur_params.dot11MeshMaxPeerLinks) ||
4840 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4841 cur_params.dot11MeshMaxRetries) ||
4842 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4843 cur_params.dot11MeshTTL) ||
4844 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4845 cur_params.element_ttl) ||
4846 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4847 cur_params.auto_open_plinks) ||
4848 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4849 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4850 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4851 cur_params.dot11MeshHWMPmaxPREQretries) ||
4852 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4853 cur_params.path_refresh_time) ||
4854 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4855 cur_params.min_discovery_timeout) ||
4856 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4857 cur_params.dot11MeshHWMPactivePathTimeout) ||
4858 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4859 cur_params.dot11MeshHWMPpreqMinInterval) ||
4860 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4861 cur_params.dot11MeshHWMPperrMinInterval) ||
4862 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4863 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4864 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4865 cur_params.dot11MeshHWMPRootMode) ||
4866 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4867 cur_params.dot11MeshHWMPRannInterval) ||
4868 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4869 cur_params.dot11MeshGateAnnouncementProtocol) ||
4870 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4871 cur_params.dot11MeshForwarding) ||
4872 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4873 cur_params.rssi_threshold) ||
4874 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4875 cur_params.ht_opmode) ||
4876 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4877 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4878 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4879 cur_params.dot11MeshHWMProotInterval) ||
4880 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4881 cur_params.dot11MeshHWMPconfirmationInterval) ||
4882 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4883 cur_params.power_mode) ||
4884 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4885 cur_params.dot11MeshAwakeWindowDuration) ||
4886 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4887 cur_params.plink_timeout))
4888 goto nla_put_failure;
4889 nla_nest_end(msg, pinfoattr);
4890 genlmsg_end(msg, hdr);
4891 return genlmsg_reply(msg, info);
4892
4893 nla_put_failure:
4894 genlmsg_cancel(msg, hdr);
4895 out:
4896 nlmsg_free(msg);
4897 return -ENOBUFS;
4898 }
4899
4900 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4901 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4902 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4903 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4904 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4905 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4906 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4907 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4908 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4909 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4910 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4911 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4912 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4913 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4914 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4915 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4916 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4917 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4918 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4919 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4920 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4921 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4922 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4923 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4924 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4925 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4926 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4927 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4928 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4929 };
4930
4931 static const struct nla_policy
4932 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4933 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4934 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4935 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4936 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4937 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4938 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4939 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4940 .len = IEEE80211_MAX_DATA_LEN },
4941 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4942 };
4943
4944 static int nl80211_parse_mesh_config(struct genl_info *info,
4945 struct mesh_config *cfg,
4946 u32 *mask_out)
4947 {
4948 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4949 u32 mask = 0;
4950
4951 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4952 do { \
4953 if (tb[attr]) { \
4954 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4955 return -EINVAL; \
4956 cfg->param = fn(tb[attr]); \
4957 mask |= (1 << (attr - 1)); \
4958 } \
4959 } while (0)
4960
4961
4962 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4963 return -EINVAL;
4964 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4965 info->attrs[NL80211_ATTR_MESH_CONFIG],
4966 nl80211_meshconf_params_policy))
4967 return -EINVAL;
4968
4969 /* This makes sure that there aren't more than 32 mesh config
4970 * parameters (otherwise our bitfield scheme would not work.) */
4971 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4972
4973 /* Fill in the params struct */
4974 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4975 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4976 nla_get_u16);
4977 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4978 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4979 nla_get_u16);
4980 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4981 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4982 nla_get_u16);
4983 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4984 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4985 nla_get_u16);
4986 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4987 mask, NL80211_MESHCONF_MAX_RETRIES,
4988 nla_get_u8);
4989 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4990 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4991 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4992 mask, NL80211_MESHCONF_ELEMENT_TTL,
4993 nla_get_u8);
4994 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4995 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4996 nla_get_u8);
4997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4998 1, 255, mask,
4999 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5000 nla_get_u32);
5001 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5002 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5003 nla_get_u8);
5004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5005 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5006 nla_get_u32);
5007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5008 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5009 nla_get_u16);
5010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5011 1, 65535, mask,
5012 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5013 nla_get_u32);
5014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5015 1, 65535, mask,
5016 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5017 nla_get_u16);
5018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5019 1, 65535, mask,
5020 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5021 nla_get_u16);
5022 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5023 dot11MeshHWMPnetDiameterTraversalTime,
5024 1, 65535, mask,
5025 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5026 nla_get_u16);
5027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5028 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5029 nla_get_u8);
5030 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5031 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5032 nla_get_u16);
5033 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5034 dot11MeshGateAnnouncementProtocol, 0, 1,
5035 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5036 nla_get_u8);
5037 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5038 mask, NL80211_MESHCONF_FORWARDING,
5039 nla_get_u8);
5040 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5041 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5042 nla_get_s32);
5043 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5044 mask, NL80211_MESHCONF_HT_OPMODE,
5045 nla_get_u16);
5046 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5047 1, 65535, mask,
5048 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5049 nla_get_u32);
5050 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5051 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5052 nla_get_u16);
5053 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5054 dot11MeshHWMPconfirmationInterval,
5055 1, 65535, mask,
5056 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5057 nla_get_u16);
5058 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5059 NL80211_MESH_POWER_ACTIVE,
5060 NL80211_MESH_POWER_MAX,
5061 mask, NL80211_MESHCONF_POWER_MODE,
5062 nla_get_u32);
5063 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5064 0, 65535, mask,
5065 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5066 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5067 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5068 nla_get_u32);
5069 if (mask_out)
5070 *mask_out = mask;
5071
5072 return 0;
5073
5074 #undef FILL_IN_MESH_PARAM_IF_SET
5075 }
5076
5077 static int nl80211_parse_mesh_setup(struct genl_info *info,
5078 struct mesh_setup *setup)
5079 {
5080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5081 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5082
5083 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5084 return -EINVAL;
5085 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5086 info->attrs[NL80211_ATTR_MESH_SETUP],
5087 nl80211_mesh_setup_params_policy))
5088 return -EINVAL;
5089
5090 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5091 setup->sync_method =
5092 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5093 IEEE80211_SYNC_METHOD_VENDOR :
5094 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5095
5096 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5097 setup->path_sel_proto =
5098 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5099 IEEE80211_PATH_PROTOCOL_VENDOR :
5100 IEEE80211_PATH_PROTOCOL_HWMP;
5101
5102 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5103 setup->path_metric =
5104 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5105 IEEE80211_PATH_METRIC_VENDOR :
5106 IEEE80211_PATH_METRIC_AIRTIME;
5107
5108
5109 if (tb[NL80211_MESH_SETUP_IE]) {
5110 struct nlattr *ieattr =
5111 tb[NL80211_MESH_SETUP_IE];
5112 if (!is_valid_ie_attr(ieattr))
5113 return -EINVAL;
5114 setup->ie = nla_data(ieattr);
5115 setup->ie_len = nla_len(ieattr);
5116 }
5117 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5118 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5119 return -EINVAL;
5120 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5121 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5122 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5123 if (setup->is_secure)
5124 setup->user_mpm = true;
5125
5126 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5127 if (!setup->user_mpm)
5128 return -EINVAL;
5129 setup->auth_id =
5130 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5131 }
5132
5133 return 0;
5134 }
5135
5136 static int nl80211_update_mesh_config(struct sk_buff *skb,
5137 struct genl_info *info)
5138 {
5139 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5140 struct net_device *dev = info->user_ptr[1];
5141 struct wireless_dev *wdev = dev->ieee80211_ptr;
5142 struct mesh_config cfg;
5143 u32 mask;
5144 int err;
5145
5146 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5147 return -EOPNOTSUPP;
5148
5149 if (!rdev->ops->update_mesh_config)
5150 return -EOPNOTSUPP;
5151
5152 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5153 if (err)
5154 return err;
5155
5156 wdev_lock(wdev);
5157 if (!wdev->mesh_id_len)
5158 err = -ENOLINK;
5159
5160 if (!err)
5161 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5162
5163 wdev_unlock(wdev);
5164
5165 return err;
5166 }
5167
5168 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5169 {
5170 const struct ieee80211_regdomain *regdom;
5171 struct sk_buff *msg;
5172 void *hdr = NULL;
5173 struct nlattr *nl_reg_rules;
5174 unsigned int i;
5175
5176 if (!cfg80211_regdomain)
5177 return -EINVAL;
5178
5179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5180 if (!msg)
5181 return -ENOBUFS;
5182
5183 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5184 NL80211_CMD_GET_REG);
5185 if (!hdr)
5186 goto put_failure;
5187
5188 if (reg_last_request_cell_base() &&
5189 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5190 NL80211_USER_REG_HINT_CELL_BASE))
5191 goto nla_put_failure;
5192
5193 rcu_read_lock();
5194 regdom = rcu_dereference(cfg80211_regdomain);
5195
5196 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5197 (regdom->dfs_region &&
5198 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5199 goto nla_put_failure_rcu;
5200
5201 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5202 if (!nl_reg_rules)
5203 goto nla_put_failure_rcu;
5204
5205 for (i = 0; i < regdom->n_reg_rules; i++) {
5206 struct nlattr *nl_reg_rule;
5207 const struct ieee80211_reg_rule *reg_rule;
5208 const struct ieee80211_freq_range *freq_range;
5209 const struct ieee80211_power_rule *power_rule;
5210 unsigned int max_bandwidth_khz;
5211
5212 reg_rule = &regdom->reg_rules[i];
5213 freq_range = &reg_rule->freq_range;
5214 power_rule = &reg_rule->power_rule;
5215
5216 nl_reg_rule = nla_nest_start(msg, i);
5217 if (!nl_reg_rule)
5218 goto nla_put_failure_rcu;
5219
5220 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5221 if (!max_bandwidth_khz)
5222 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5223 reg_rule);
5224
5225 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5226 reg_rule->flags) ||
5227 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5228 freq_range->start_freq_khz) ||
5229 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5230 freq_range->end_freq_khz) ||
5231 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5232 max_bandwidth_khz) ||
5233 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5234 power_rule->max_antenna_gain) ||
5235 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5236 power_rule->max_eirp) ||
5237 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5238 reg_rule->dfs_cac_ms))
5239 goto nla_put_failure_rcu;
5240
5241 nla_nest_end(msg, nl_reg_rule);
5242 }
5243 rcu_read_unlock();
5244
5245 nla_nest_end(msg, nl_reg_rules);
5246
5247 genlmsg_end(msg, hdr);
5248 return genlmsg_reply(msg, info);
5249
5250 nla_put_failure_rcu:
5251 rcu_read_unlock();
5252 nla_put_failure:
5253 genlmsg_cancel(msg, hdr);
5254 put_failure:
5255 nlmsg_free(msg);
5256 return -EMSGSIZE;
5257 }
5258
5259 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5260 {
5261 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5262 struct nlattr *nl_reg_rule;
5263 char *alpha2 = NULL;
5264 int rem_reg_rules = 0, r = 0;
5265 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5266 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5267 struct ieee80211_regdomain *rd = NULL;
5268
5269 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5270 return -EINVAL;
5271
5272 if (!info->attrs[NL80211_ATTR_REG_RULES])
5273 return -EINVAL;
5274
5275 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5276
5277 if (info->attrs[NL80211_ATTR_DFS_REGION])
5278 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5279
5280 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5281 rem_reg_rules) {
5282 num_rules++;
5283 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5284 return -EINVAL;
5285 }
5286
5287 if (!reg_is_valid_request(alpha2))
5288 return -EINVAL;
5289
5290 size_of_regd = sizeof(struct ieee80211_regdomain) +
5291 num_rules * sizeof(struct ieee80211_reg_rule);
5292
5293 rd = kzalloc(size_of_regd, GFP_KERNEL);
5294 if (!rd)
5295 return -ENOMEM;
5296
5297 rd->n_reg_rules = num_rules;
5298 rd->alpha2[0] = alpha2[0];
5299 rd->alpha2[1] = alpha2[1];
5300
5301 /*
5302 * Disable DFS master mode if the DFS region was
5303 * not supported or known on this kernel.
5304 */
5305 if (reg_supported_dfs_region(dfs_region))
5306 rd->dfs_region = dfs_region;
5307
5308 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5309 rem_reg_rules) {
5310 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5311 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5312 reg_rule_policy);
5313 if (r)
5314 goto bad_reg;
5315 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5316 if (r)
5317 goto bad_reg;
5318
5319 rule_idx++;
5320
5321 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5322 r = -EINVAL;
5323 goto bad_reg;
5324 }
5325 }
5326
5327 r = set_regdom(rd);
5328 /* set_regdom took ownership */
5329 rd = NULL;
5330
5331 bad_reg:
5332 kfree(rd);
5333 return r;
5334 }
5335
5336 static int validate_scan_freqs(struct nlattr *freqs)
5337 {
5338 struct nlattr *attr1, *attr2;
5339 int n_channels = 0, tmp1, tmp2;
5340
5341 nla_for_each_nested(attr1, freqs, tmp1) {
5342 n_channels++;
5343 /*
5344 * Some hardware has a limited channel list for
5345 * scanning, and it is pretty much nonsensical
5346 * to scan for a channel twice, so disallow that
5347 * and don't require drivers to check that the
5348 * channel list they get isn't longer than what
5349 * they can scan, as long as they can scan all
5350 * the channels they registered at once.
5351 */
5352 nla_for_each_nested(attr2, freqs, tmp2)
5353 if (attr1 != attr2 &&
5354 nla_get_u32(attr1) == nla_get_u32(attr2))
5355 return 0;
5356 }
5357
5358 return n_channels;
5359 }
5360
5361 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5362 {
5363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5364 struct wireless_dev *wdev = info->user_ptr[1];
5365 struct cfg80211_scan_request *request;
5366 struct nlattr *attr;
5367 struct wiphy *wiphy;
5368 int err, tmp, n_ssids = 0, n_channels, i;
5369 size_t ie_len;
5370
5371 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5372 return -EINVAL;
5373
5374 wiphy = &rdev->wiphy;
5375
5376 if (!rdev->ops->scan)
5377 return -EOPNOTSUPP;
5378
5379 if (rdev->scan_req || rdev->scan_msg) {
5380 err = -EBUSY;
5381 goto unlock;
5382 }
5383
5384 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5385 n_channels = validate_scan_freqs(
5386 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5387 if (!n_channels) {
5388 err = -EINVAL;
5389 goto unlock;
5390 }
5391 } else {
5392 n_channels = ieee80211_get_num_supported_channels(wiphy);
5393 }
5394
5395 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5396 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5397 n_ssids++;
5398
5399 if (n_ssids > wiphy->max_scan_ssids) {
5400 err = -EINVAL;
5401 goto unlock;
5402 }
5403
5404 if (info->attrs[NL80211_ATTR_IE])
5405 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5406 else
5407 ie_len = 0;
5408
5409 if (ie_len > wiphy->max_scan_ie_len) {
5410 err = -EINVAL;
5411 goto unlock;
5412 }
5413
5414 request = kzalloc(sizeof(*request)
5415 + sizeof(*request->ssids) * n_ssids
5416 + sizeof(*request->channels) * n_channels
5417 + ie_len, GFP_KERNEL);
5418 if (!request) {
5419 err = -ENOMEM;
5420 goto unlock;
5421 }
5422
5423 if (n_ssids)
5424 request->ssids = (void *)&request->channels[n_channels];
5425 request->n_ssids = n_ssids;
5426 if (ie_len) {
5427 if (request->ssids)
5428 request->ie = (void *)(request->ssids + n_ssids);
5429 else
5430 request->ie = (void *)(request->channels + n_channels);
5431 }
5432
5433 i = 0;
5434 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5435 /* user specified, bail out if channel not found */
5436 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5437 struct ieee80211_channel *chan;
5438
5439 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5440
5441 if (!chan) {
5442 err = -EINVAL;
5443 goto out_free;
5444 }
5445
5446 /* ignore disabled channels */
5447 if (chan->flags & IEEE80211_CHAN_DISABLED)
5448 continue;
5449
5450 request->channels[i] = chan;
5451 i++;
5452 }
5453 } else {
5454 enum ieee80211_band band;
5455
5456 /* all channels */
5457 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5458 int j;
5459 if (!wiphy->bands[band])
5460 continue;
5461 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5462 struct ieee80211_channel *chan;
5463
5464 chan = &wiphy->bands[band]->channels[j];
5465
5466 if (chan->flags & IEEE80211_CHAN_DISABLED)
5467 continue;
5468
5469 request->channels[i] = chan;
5470 i++;
5471 }
5472 }
5473 }
5474
5475 if (!i) {
5476 err = -EINVAL;
5477 goto out_free;
5478 }
5479
5480 request->n_channels = i;
5481
5482 i = 0;
5483 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5484 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5485 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5486 err = -EINVAL;
5487 goto out_free;
5488 }
5489 request->ssids[i].ssid_len = nla_len(attr);
5490 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5491 i++;
5492 }
5493 }
5494
5495 if (info->attrs[NL80211_ATTR_IE]) {
5496 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5497 memcpy((void *)request->ie,
5498 nla_data(info->attrs[NL80211_ATTR_IE]),
5499 request->ie_len);
5500 }
5501
5502 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5503 if (wiphy->bands[i])
5504 request->rates[i] =
5505 (1 << wiphy->bands[i]->n_bitrates) - 1;
5506
5507 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5508 nla_for_each_nested(attr,
5509 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5510 tmp) {
5511 enum ieee80211_band band = nla_type(attr);
5512
5513 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5514 err = -EINVAL;
5515 goto out_free;
5516 }
5517
5518 if (!wiphy->bands[band])
5519 continue;
5520
5521 err = ieee80211_get_ratemask(wiphy->bands[band],
5522 nla_data(attr),
5523 nla_len(attr),
5524 &request->rates[band]);
5525 if (err)
5526 goto out_free;
5527 }
5528 }
5529
5530 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5531 request->flags = nla_get_u32(
5532 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5533 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5534 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5535 err = -EOPNOTSUPP;
5536 goto out_free;
5537 }
5538 }
5539
5540 request->no_cck =
5541 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5542
5543 request->wdev = wdev;
5544 request->wiphy = &rdev->wiphy;
5545 request->scan_start = jiffies;
5546
5547 rdev->scan_req = request;
5548 err = rdev_scan(rdev, request);
5549
5550 if (!err) {
5551 nl80211_send_scan_start(rdev, wdev);
5552 if (wdev->netdev)
5553 dev_hold(wdev->netdev);
5554 } else {
5555 out_free:
5556 rdev->scan_req = NULL;
5557 kfree(request);
5558 }
5559
5560 unlock:
5561 return err;
5562 }
5563
5564 static int nl80211_start_sched_scan(struct sk_buff *skb,
5565 struct genl_info *info)
5566 {
5567 struct cfg80211_sched_scan_request *request;
5568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5569 struct net_device *dev = info->user_ptr[1];
5570 struct nlattr *attr;
5571 struct wiphy *wiphy;
5572 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5573 u32 interval;
5574 enum ieee80211_band band;
5575 size_t ie_len;
5576 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5577 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5578
5579 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5580 !rdev->ops->sched_scan_start)
5581 return -EOPNOTSUPP;
5582
5583 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5584 return -EINVAL;
5585
5586 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5587 return -EINVAL;
5588
5589 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5590 if (interval == 0)
5591 return -EINVAL;
5592
5593 wiphy = &rdev->wiphy;
5594
5595 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5596 n_channels = validate_scan_freqs(
5597 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5598 if (!n_channels)
5599 return -EINVAL;
5600 } else {
5601 n_channels = ieee80211_get_num_supported_channels(wiphy);
5602 }
5603
5604 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5605 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5606 tmp)
5607 n_ssids++;
5608
5609 if (n_ssids > wiphy->max_sched_scan_ssids)
5610 return -EINVAL;
5611
5612 /*
5613 * First, count the number of 'real' matchsets. Due to an issue with
5614 * the old implementation, matchsets containing only the RSSI attribute
5615 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5616 * RSSI for all matchsets, rather than their own matchset for reporting
5617 * all APs with a strong RSSI. This is needed to be compatible with
5618 * older userspace that treated a matchset with only the RSSI as the
5619 * global RSSI for all other matchsets - if there are other matchsets.
5620 */
5621 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5622 nla_for_each_nested(attr,
5623 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5624 tmp) {
5625 struct nlattr *rssi;
5626
5627 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5628 nla_data(attr), nla_len(attr),
5629 nl80211_match_policy);
5630 if (err)
5631 return err;
5632 /* add other standalone attributes here */
5633 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5634 n_match_sets++;
5635 continue;
5636 }
5637 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5638 if (rssi)
5639 default_match_rssi = nla_get_s32(rssi);
5640 }
5641 }
5642
5643 /* However, if there's no other matchset, add the RSSI one */
5644 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5645 n_match_sets = 1;
5646
5647 if (n_match_sets > wiphy->max_match_sets)
5648 return -EINVAL;
5649
5650 if (info->attrs[NL80211_ATTR_IE])
5651 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5652 else
5653 ie_len = 0;
5654
5655 if (ie_len > wiphy->max_sched_scan_ie_len)
5656 return -EINVAL;
5657
5658 if (rdev->sched_scan_req) {
5659 err = -EINPROGRESS;
5660 goto out;
5661 }
5662
5663 request = kzalloc(sizeof(*request)
5664 + sizeof(*request->ssids) * n_ssids
5665 + sizeof(*request->match_sets) * n_match_sets
5666 + sizeof(*request->channels) * n_channels
5667 + ie_len, GFP_KERNEL);
5668 if (!request) {
5669 err = -ENOMEM;
5670 goto out;
5671 }
5672
5673 if (n_ssids)
5674 request->ssids = (void *)&request->channels[n_channels];
5675 request->n_ssids = n_ssids;
5676 if (ie_len) {
5677 if (request->ssids)
5678 request->ie = (void *)(request->ssids + n_ssids);
5679 else
5680 request->ie = (void *)(request->channels + n_channels);
5681 }
5682
5683 if (n_match_sets) {
5684 if (request->ie)
5685 request->match_sets = (void *)(request->ie + ie_len);
5686 else if (request->ssids)
5687 request->match_sets =
5688 (void *)(request->ssids + n_ssids);
5689 else
5690 request->match_sets =
5691 (void *)(request->channels + n_channels);
5692 }
5693 request->n_match_sets = n_match_sets;
5694
5695 i = 0;
5696 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5697 /* user specified, bail out if channel not found */
5698 nla_for_each_nested(attr,
5699 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5700 tmp) {
5701 struct ieee80211_channel *chan;
5702
5703 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5704
5705 if (!chan) {
5706 err = -EINVAL;
5707 goto out_free;
5708 }
5709
5710 /* ignore disabled channels */
5711 if (chan->flags & IEEE80211_CHAN_DISABLED)
5712 continue;
5713
5714 request->channels[i] = chan;
5715 i++;
5716 }
5717 } else {
5718 /* all channels */
5719 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5720 int j;
5721 if (!wiphy->bands[band])
5722 continue;
5723 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5724 struct ieee80211_channel *chan;
5725
5726 chan = &wiphy->bands[band]->channels[j];
5727
5728 if (chan->flags & IEEE80211_CHAN_DISABLED)
5729 continue;
5730
5731 request->channels[i] = chan;
5732 i++;
5733 }
5734 }
5735 }
5736
5737 if (!i) {
5738 err = -EINVAL;
5739 goto out_free;
5740 }
5741
5742 request->n_channels = i;
5743
5744 i = 0;
5745 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5746 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5747 tmp) {
5748 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5749 err = -EINVAL;
5750 goto out_free;
5751 }
5752 request->ssids[i].ssid_len = nla_len(attr);
5753 memcpy(request->ssids[i].ssid, nla_data(attr),
5754 nla_len(attr));
5755 i++;
5756 }
5757 }
5758
5759 i = 0;
5760 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5761 nla_for_each_nested(attr,
5762 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5763 tmp) {
5764 struct nlattr *ssid, *rssi;
5765
5766 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5767 nla_data(attr), nla_len(attr),
5768 nl80211_match_policy);
5769 if (err)
5770 goto out_free;
5771 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5772 if (ssid) {
5773 if (WARN_ON(i >= n_match_sets)) {
5774 /* this indicates a programming error,
5775 * the loop above should have verified
5776 * things properly
5777 */
5778 err = -EINVAL;
5779 goto out_free;
5780 }
5781
5782 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5783 err = -EINVAL;
5784 goto out_free;
5785 }
5786 memcpy(request->match_sets[i].ssid.ssid,
5787 nla_data(ssid), nla_len(ssid));
5788 request->match_sets[i].ssid.ssid_len =
5789 nla_len(ssid);
5790 /* special attribute - old implemenation w/a */
5791 request->match_sets[i].rssi_thold =
5792 default_match_rssi;
5793 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5794 if (rssi)
5795 request->match_sets[i].rssi_thold =
5796 nla_get_s32(rssi);
5797 }
5798 i++;
5799 }
5800
5801 /* there was no other matchset, so the RSSI one is alone */
5802 if (i == 0)
5803 request->match_sets[0].rssi_thold = default_match_rssi;
5804
5805 request->min_rssi_thold = INT_MAX;
5806 for (i = 0; i < n_match_sets; i++)
5807 request->min_rssi_thold =
5808 min(request->match_sets[i].rssi_thold,
5809 request->min_rssi_thold);
5810 } else {
5811 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5812 }
5813
5814 if (ie_len) {
5815 request->ie_len = ie_len;
5816 memcpy((void *)request->ie,
5817 nla_data(info->attrs[NL80211_ATTR_IE]),
5818 request->ie_len);
5819 }
5820
5821 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5822 request->flags = nla_get_u32(
5823 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5824 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5825 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5826 err = -EOPNOTSUPP;
5827 goto out_free;
5828 }
5829 }
5830
5831 request->dev = dev;
5832 request->wiphy = &rdev->wiphy;
5833 request->interval = interval;
5834 request->scan_start = jiffies;
5835
5836 err = rdev_sched_scan_start(rdev, dev, request);
5837 if (!err) {
5838 rdev->sched_scan_req = request;
5839 nl80211_send_sched_scan(rdev, dev,
5840 NL80211_CMD_START_SCHED_SCAN);
5841 goto out;
5842 }
5843
5844 out_free:
5845 kfree(request);
5846 out:
5847 return err;
5848 }
5849
5850 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5851 struct genl_info *info)
5852 {
5853 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5854
5855 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5856 !rdev->ops->sched_scan_stop)
5857 return -EOPNOTSUPP;
5858
5859 return __cfg80211_stop_sched_scan(rdev, false);
5860 }
5861
5862 static int nl80211_start_radar_detection(struct sk_buff *skb,
5863 struct genl_info *info)
5864 {
5865 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5866 struct net_device *dev = info->user_ptr[1];
5867 struct wireless_dev *wdev = dev->ieee80211_ptr;
5868 struct cfg80211_chan_def chandef;
5869 enum nl80211_dfs_regions dfs_region;
5870 unsigned int cac_time_ms;
5871 int err;
5872
5873 dfs_region = reg_get_dfs_region(wdev->wiphy);
5874 if (dfs_region == NL80211_DFS_UNSET)
5875 return -EINVAL;
5876
5877 err = nl80211_parse_chandef(rdev, info, &chandef);
5878 if (err)
5879 return err;
5880
5881 if (netif_carrier_ok(dev))
5882 return -EBUSY;
5883
5884 if (wdev->cac_started)
5885 return -EBUSY;
5886
5887 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
5888 wdev->iftype);
5889 if (err < 0)
5890 return err;
5891
5892 if (err == 0)
5893 return -EINVAL;
5894
5895 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5896 return -EINVAL;
5897
5898 if (!rdev->ops->start_radar_detection)
5899 return -EOPNOTSUPP;
5900
5901 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
5902 if (WARN_ON(!cac_time_ms))
5903 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
5904
5905 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
5906 cac_time_ms);
5907 if (!err) {
5908 wdev->chandef = chandef;
5909 wdev->cac_started = true;
5910 wdev->cac_start_time = jiffies;
5911 wdev->cac_time_ms = cac_time_ms;
5912 }
5913 return err;
5914 }
5915
5916 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5917 {
5918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5919 struct net_device *dev = info->user_ptr[1];
5920 struct wireless_dev *wdev = dev->ieee80211_ptr;
5921 struct cfg80211_csa_settings params;
5922 /* csa_attrs is defined static to avoid waste of stack size - this
5923 * function is called under RTNL lock, so this should not be a problem.
5924 */
5925 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5926 u8 radar_detect_width = 0;
5927 int err;
5928 bool need_new_beacon = false;
5929 int len, i;
5930
5931 if (!rdev->ops->channel_switch ||
5932 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5933 return -EOPNOTSUPP;
5934
5935 switch (dev->ieee80211_ptr->iftype) {
5936 case NL80211_IFTYPE_AP:
5937 case NL80211_IFTYPE_P2P_GO:
5938 need_new_beacon = true;
5939
5940 /* useless if AP is not running */
5941 if (!wdev->beacon_interval)
5942 return -ENOTCONN;
5943 break;
5944 case NL80211_IFTYPE_ADHOC:
5945 if (!wdev->ssid_len)
5946 return -ENOTCONN;
5947 break;
5948 case NL80211_IFTYPE_MESH_POINT:
5949 if (!wdev->mesh_id_len)
5950 return -ENOTCONN;
5951 break;
5952 default:
5953 return -EOPNOTSUPP;
5954 }
5955
5956 memset(&params, 0, sizeof(params));
5957
5958 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5959 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5960 return -EINVAL;
5961
5962 /* only important for AP, IBSS and mesh create IEs internally */
5963 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5964 return -EINVAL;
5965
5966 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5967
5968 if (!need_new_beacon)
5969 goto skip_beacons;
5970
5971 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5972 if (err)
5973 return err;
5974
5975 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5976 info->attrs[NL80211_ATTR_CSA_IES],
5977 nl80211_policy);
5978 if (err)
5979 return err;
5980
5981 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5982 if (err)
5983 return err;
5984
5985 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5986 return -EINVAL;
5987
5988 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5989 if (!len || (len % sizeof(u16)))
5990 return -EINVAL;
5991
5992 params.n_counter_offsets_beacon = len / sizeof(u16);
5993 if (rdev->wiphy.max_num_csa_counters &&
5994 (params.n_counter_offsets_beacon >
5995 rdev->wiphy.max_num_csa_counters))
5996 return -EINVAL;
5997
5998 params.counter_offsets_beacon =
5999 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6000
6001 /* sanity checks - counters should fit and be the same */
6002 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6003 u16 offset = params.counter_offsets_beacon[i];
6004
6005 if (offset >= params.beacon_csa.tail_len)
6006 return -EINVAL;
6007
6008 if (params.beacon_csa.tail[offset] != params.count)
6009 return -EINVAL;
6010 }
6011
6012 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6013 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6014 if (!len || (len % sizeof(u16)))
6015 return -EINVAL;
6016
6017 params.n_counter_offsets_presp = len / sizeof(u16);
6018 if (rdev->wiphy.max_num_csa_counters &&
6019 (params.n_counter_offsets_beacon >
6020 rdev->wiphy.max_num_csa_counters))
6021 return -EINVAL;
6022
6023 params.counter_offsets_presp =
6024 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6025
6026 /* sanity checks - counters should fit and be the same */
6027 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6028 u16 offset = params.counter_offsets_presp[i];
6029
6030 if (offset >= params.beacon_csa.probe_resp_len)
6031 return -EINVAL;
6032
6033 if (params.beacon_csa.probe_resp[offset] !=
6034 params.count)
6035 return -EINVAL;
6036 }
6037 }
6038
6039 skip_beacons:
6040 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6041 if (err)
6042 return err;
6043
6044 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6045 wdev->iftype))
6046 return -EINVAL;
6047
6048 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6049 &params.chandef,
6050 wdev->iftype);
6051 if (err < 0)
6052 return err;
6053
6054 if (err > 0) {
6055 radar_detect_width = BIT(params.chandef.width);
6056 params.radar_required = true;
6057 }
6058
6059 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6060 params.block_tx = true;
6061
6062 wdev_lock(wdev);
6063 err = rdev_channel_switch(rdev, dev, &params);
6064 wdev_unlock(wdev);
6065
6066 return err;
6067 }
6068
6069 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6070 u32 seq, int flags,
6071 struct cfg80211_registered_device *rdev,
6072 struct wireless_dev *wdev,
6073 struct cfg80211_internal_bss *intbss)
6074 {
6075 struct cfg80211_bss *res = &intbss->pub;
6076 const struct cfg80211_bss_ies *ies;
6077 void *hdr;
6078 struct nlattr *bss;
6079
6080 ASSERT_WDEV_LOCK(wdev);
6081
6082 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6083 NL80211_CMD_NEW_SCAN_RESULTS);
6084 if (!hdr)
6085 return -1;
6086
6087 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6088
6089 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6090 goto nla_put_failure;
6091 if (wdev->netdev &&
6092 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6093 goto nla_put_failure;
6094 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6095 goto nla_put_failure;
6096
6097 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6098 if (!bss)
6099 goto nla_put_failure;
6100 if ((!is_zero_ether_addr(res->bssid) &&
6101 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6102 goto nla_put_failure;
6103
6104 rcu_read_lock();
6105 /* indicate whether we have probe response data or not */
6106 if (rcu_access_pointer(res->proberesp_ies) &&
6107 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6108 goto fail_unlock_rcu;
6109
6110 /* this pointer prefers to be pointed to probe response data
6111 * but is always valid
6112 */
6113 ies = rcu_dereference(res->ies);
6114 if (ies) {
6115 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6116 goto fail_unlock_rcu;
6117 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6118 ies->len, ies->data))
6119 goto fail_unlock_rcu;
6120 }
6121
6122 /* and this pointer is always (unless driver didn't know) beacon data */
6123 ies = rcu_dereference(res->beacon_ies);
6124 if (ies && ies->from_beacon) {
6125 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6126 goto fail_unlock_rcu;
6127 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6128 ies->len, ies->data))
6129 goto fail_unlock_rcu;
6130 }
6131 rcu_read_unlock();
6132
6133 if (res->beacon_interval &&
6134 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6135 goto nla_put_failure;
6136 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6137 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6138 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6139 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6140 jiffies_to_msecs(jiffies - intbss->ts)))
6141 goto nla_put_failure;
6142
6143 switch (rdev->wiphy.signal_type) {
6144 case CFG80211_SIGNAL_TYPE_MBM:
6145 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6146 goto nla_put_failure;
6147 break;
6148 case CFG80211_SIGNAL_TYPE_UNSPEC:
6149 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6150 goto nla_put_failure;
6151 break;
6152 default:
6153 break;
6154 }
6155
6156 switch (wdev->iftype) {
6157 case NL80211_IFTYPE_P2P_CLIENT:
6158 case NL80211_IFTYPE_STATION:
6159 if (intbss == wdev->current_bss &&
6160 nla_put_u32(msg, NL80211_BSS_STATUS,
6161 NL80211_BSS_STATUS_ASSOCIATED))
6162 goto nla_put_failure;
6163 break;
6164 case NL80211_IFTYPE_ADHOC:
6165 if (intbss == wdev->current_bss &&
6166 nla_put_u32(msg, NL80211_BSS_STATUS,
6167 NL80211_BSS_STATUS_IBSS_JOINED))
6168 goto nla_put_failure;
6169 break;
6170 default:
6171 break;
6172 }
6173
6174 nla_nest_end(msg, bss);
6175
6176 return genlmsg_end(msg, hdr);
6177
6178 fail_unlock_rcu:
6179 rcu_read_unlock();
6180 nla_put_failure:
6181 genlmsg_cancel(msg, hdr);
6182 return -EMSGSIZE;
6183 }
6184
6185 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6186 {
6187 struct cfg80211_registered_device *rdev;
6188 struct cfg80211_internal_bss *scan;
6189 struct wireless_dev *wdev;
6190 int start = cb->args[2], idx = 0;
6191 int err;
6192
6193 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6194 if (err)
6195 return err;
6196
6197 wdev_lock(wdev);
6198 spin_lock_bh(&rdev->bss_lock);
6199 cfg80211_bss_expire(rdev);
6200
6201 cb->seq = rdev->bss_generation;
6202
6203 list_for_each_entry(scan, &rdev->bss_list, list) {
6204 if (++idx <= start)
6205 continue;
6206 if (nl80211_send_bss(skb, cb,
6207 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6208 rdev, wdev, scan) < 0) {
6209 idx--;
6210 break;
6211 }
6212 }
6213
6214 spin_unlock_bh(&rdev->bss_lock);
6215 wdev_unlock(wdev);
6216
6217 cb->args[2] = idx;
6218 nl80211_finish_wdev_dump(rdev);
6219
6220 return skb->len;
6221 }
6222
6223 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6224 int flags, struct net_device *dev,
6225 struct survey_info *survey)
6226 {
6227 void *hdr;
6228 struct nlattr *infoattr;
6229
6230 hdr = nl80211hdr_put(msg, portid, seq, flags,
6231 NL80211_CMD_NEW_SURVEY_RESULTS);
6232 if (!hdr)
6233 return -ENOMEM;
6234
6235 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6236 goto nla_put_failure;
6237
6238 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6239 if (!infoattr)
6240 goto nla_put_failure;
6241
6242 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6243 survey->channel->center_freq))
6244 goto nla_put_failure;
6245
6246 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6247 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6248 goto nla_put_failure;
6249 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6250 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6251 goto nla_put_failure;
6252 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6253 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6254 survey->channel_time))
6255 goto nla_put_failure;
6256 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6257 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6258 survey->channel_time_busy))
6259 goto nla_put_failure;
6260 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6261 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6262 survey->channel_time_ext_busy))
6263 goto nla_put_failure;
6264 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6265 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6266 survey->channel_time_rx))
6267 goto nla_put_failure;
6268 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6269 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6270 survey->channel_time_tx))
6271 goto nla_put_failure;
6272
6273 nla_nest_end(msg, infoattr);
6274
6275 return genlmsg_end(msg, hdr);
6276
6277 nla_put_failure:
6278 genlmsg_cancel(msg, hdr);
6279 return -EMSGSIZE;
6280 }
6281
6282 static int nl80211_dump_survey(struct sk_buff *skb,
6283 struct netlink_callback *cb)
6284 {
6285 struct survey_info survey;
6286 struct cfg80211_registered_device *rdev;
6287 struct wireless_dev *wdev;
6288 int survey_idx = cb->args[2];
6289 int res;
6290
6291 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6292 if (res)
6293 return res;
6294
6295 if (!wdev->netdev) {
6296 res = -EINVAL;
6297 goto out_err;
6298 }
6299
6300 if (!rdev->ops->dump_survey) {
6301 res = -EOPNOTSUPP;
6302 goto out_err;
6303 }
6304
6305 while (1) {
6306 struct ieee80211_channel *chan;
6307
6308 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6309 if (res == -ENOENT)
6310 break;
6311 if (res)
6312 goto out_err;
6313
6314 /* Survey without a channel doesn't make sense */
6315 if (!survey.channel) {
6316 res = -EINVAL;
6317 goto out;
6318 }
6319
6320 chan = ieee80211_get_channel(&rdev->wiphy,
6321 survey.channel->center_freq);
6322 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6323 survey_idx++;
6324 continue;
6325 }
6326
6327 if (nl80211_send_survey(skb,
6328 NETLINK_CB(cb->skb).portid,
6329 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6330 wdev->netdev, &survey) < 0)
6331 goto out;
6332 survey_idx++;
6333 }
6334
6335 out:
6336 cb->args[2] = survey_idx;
6337 res = skb->len;
6338 out_err:
6339 nl80211_finish_wdev_dump(rdev);
6340 return res;
6341 }
6342
6343 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6344 {
6345 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6346 NL80211_WPA_VERSION_2));
6347 }
6348
6349 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6350 {
6351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6352 struct net_device *dev = info->user_ptr[1];
6353 struct ieee80211_channel *chan;
6354 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6355 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6356 enum nl80211_auth_type auth_type;
6357 struct key_parse key;
6358 bool local_state_change;
6359
6360 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6361 return -EINVAL;
6362
6363 if (!info->attrs[NL80211_ATTR_MAC])
6364 return -EINVAL;
6365
6366 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6367 return -EINVAL;
6368
6369 if (!info->attrs[NL80211_ATTR_SSID])
6370 return -EINVAL;
6371
6372 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6373 return -EINVAL;
6374
6375 err = nl80211_parse_key(info, &key);
6376 if (err)
6377 return err;
6378
6379 if (key.idx >= 0) {
6380 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6381 return -EINVAL;
6382 if (!key.p.key || !key.p.key_len)
6383 return -EINVAL;
6384 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6385 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6386 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6387 key.p.key_len != WLAN_KEY_LEN_WEP104))
6388 return -EINVAL;
6389 if (key.idx > 4)
6390 return -EINVAL;
6391 } else {
6392 key.p.key_len = 0;
6393 key.p.key = NULL;
6394 }
6395
6396 if (key.idx >= 0) {
6397 int i;
6398 bool ok = false;
6399 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6400 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6401 ok = true;
6402 break;
6403 }
6404 }
6405 if (!ok)
6406 return -EINVAL;
6407 }
6408
6409 if (!rdev->ops->auth)
6410 return -EOPNOTSUPP;
6411
6412 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6413 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6414 return -EOPNOTSUPP;
6415
6416 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6417 chan = nl80211_get_valid_chan(&rdev->wiphy,
6418 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6419 if (!chan)
6420 return -EINVAL;
6421
6422 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6423 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6424
6425 if (info->attrs[NL80211_ATTR_IE]) {
6426 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6427 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6428 }
6429
6430 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6431 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6432 return -EINVAL;
6433
6434 if (auth_type == NL80211_AUTHTYPE_SAE &&
6435 !info->attrs[NL80211_ATTR_SAE_DATA])
6436 return -EINVAL;
6437
6438 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6439 if (auth_type != NL80211_AUTHTYPE_SAE)
6440 return -EINVAL;
6441 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6442 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6443 /* need to include at least Auth Transaction and Status Code */
6444 if (sae_data_len < 4)
6445 return -EINVAL;
6446 }
6447
6448 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6449
6450 /*
6451 * Since we no longer track auth state, ignore
6452 * requests to only change local state.
6453 */
6454 if (local_state_change)
6455 return 0;
6456
6457 wdev_lock(dev->ieee80211_ptr);
6458 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6459 ssid, ssid_len, ie, ie_len,
6460 key.p.key, key.p.key_len, key.idx,
6461 sae_data, sae_data_len);
6462 wdev_unlock(dev->ieee80211_ptr);
6463 return err;
6464 }
6465
6466 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6467 struct genl_info *info,
6468 struct cfg80211_crypto_settings *settings,
6469 int cipher_limit)
6470 {
6471 memset(settings, 0, sizeof(*settings));
6472
6473 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6474
6475 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6476 u16 proto;
6477 proto = nla_get_u16(
6478 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6479 settings->control_port_ethertype = cpu_to_be16(proto);
6480 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6481 proto != ETH_P_PAE)
6482 return -EINVAL;
6483 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6484 settings->control_port_no_encrypt = true;
6485 } else
6486 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6487
6488 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6489 void *data;
6490 int len, i;
6491
6492 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6493 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6494 settings->n_ciphers_pairwise = len / sizeof(u32);
6495
6496 if (len % sizeof(u32))
6497 return -EINVAL;
6498
6499 if (settings->n_ciphers_pairwise > cipher_limit)
6500 return -EINVAL;
6501
6502 memcpy(settings->ciphers_pairwise, data, len);
6503
6504 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6505 if (!cfg80211_supported_cipher_suite(
6506 &rdev->wiphy,
6507 settings->ciphers_pairwise[i]))
6508 return -EINVAL;
6509 }
6510
6511 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6512 settings->cipher_group =
6513 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6514 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6515 settings->cipher_group))
6516 return -EINVAL;
6517 }
6518
6519 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6520 settings->wpa_versions =
6521 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6522 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6523 return -EINVAL;
6524 }
6525
6526 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6527 void *data;
6528 int len;
6529
6530 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6531 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6532 settings->n_akm_suites = len / sizeof(u32);
6533
6534 if (len % sizeof(u32))
6535 return -EINVAL;
6536
6537 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6538 return -EINVAL;
6539
6540 memcpy(settings->akm_suites, data, len);
6541 }
6542
6543 return 0;
6544 }
6545
6546 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6547 {
6548 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6549 struct net_device *dev = info->user_ptr[1];
6550 struct ieee80211_channel *chan;
6551 struct cfg80211_assoc_request req = {};
6552 const u8 *bssid, *ssid;
6553 int err, ssid_len = 0;
6554
6555 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6556 return -EINVAL;
6557
6558 if (!info->attrs[NL80211_ATTR_MAC] ||
6559 !info->attrs[NL80211_ATTR_SSID] ||
6560 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6561 return -EINVAL;
6562
6563 if (!rdev->ops->assoc)
6564 return -EOPNOTSUPP;
6565
6566 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6568 return -EOPNOTSUPP;
6569
6570 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6571
6572 chan = nl80211_get_valid_chan(&rdev->wiphy,
6573 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6574 if (!chan)
6575 return -EINVAL;
6576
6577 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6578 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6579
6580 if (info->attrs[NL80211_ATTR_IE]) {
6581 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6582 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6583 }
6584
6585 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6586 enum nl80211_mfp mfp =
6587 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6588 if (mfp == NL80211_MFP_REQUIRED)
6589 req.use_mfp = true;
6590 else if (mfp != NL80211_MFP_NO)
6591 return -EINVAL;
6592 }
6593
6594 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6595 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6596
6597 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6598 req.flags |= ASSOC_REQ_DISABLE_HT;
6599
6600 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6601 memcpy(&req.ht_capa_mask,
6602 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6603 sizeof(req.ht_capa_mask));
6604
6605 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6606 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6607 return -EINVAL;
6608 memcpy(&req.ht_capa,
6609 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6610 sizeof(req.ht_capa));
6611 }
6612
6613 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6614 req.flags |= ASSOC_REQ_DISABLE_VHT;
6615
6616 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6617 memcpy(&req.vht_capa_mask,
6618 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6619 sizeof(req.vht_capa_mask));
6620
6621 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6622 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6623 return -EINVAL;
6624 memcpy(&req.vht_capa,
6625 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6626 sizeof(req.vht_capa));
6627 }
6628
6629 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6630 if (!(rdev->wiphy.features &
6631 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6632 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6633 return -EINVAL;
6634 req.flags |= ASSOC_REQ_USE_RRM;
6635 }
6636
6637 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6638 if (!err) {
6639 wdev_lock(dev->ieee80211_ptr);
6640 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6641 ssid, ssid_len, &req);
6642 wdev_unlock(dev->ieee80211_ptr);
6643 }
6644
6645 return err;
6646 }
6647
6648 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6649 {
6650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6651 struct net_device *dev = info->user_ptr[1];
6652 const u8 *ie = NULL, *bssid;
6653 int ie_len = 0, err;
6654 u16 reason_code;
6655 bool local_state_change;
6656
6657 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6658 return -EINVAL;
6659
6660 if (!info->attrs[NL80211_ATTR_MAC])
6661 return -EINVAL;
6662
6663 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6664 return -EINVAL;
6665
6666 if (!rdev->ops->deauth)
6667 return -EOPNOTSUPP;
6668
6669 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6670 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6671 return -EOPNOTSUPP;
6672
6673 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6674
6675 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6676 if (reason_code == 0) {
6677 /* Reason Code 0 is reserved */
6678 return -EINVAL;
6679 }
6680
6681 if (info->attrs[NL80211_ATTR_IE]) {
6682 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6683 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6684 }
6685
6686 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6687
6688 wdev_lock(dev->ieee80211_ptr);
6689 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6690 local_state_change);
6691 wdev_unlock(dev->ieee80211_ptr);
6692 return err;
6693 }
6694
6695 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6696 {
6697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6698 struct net_device *dev = info->user_ptr[1];
6699 const u8 *ie = NULL, *bssid;
6700 int ie_len = 0, err;
6701 u16 reason_code;
6702 bool local_state_change;
6703
6704 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6705 return -EINVAL;
6706
6707 if (!info->attrs[NL80211_ATTR_MAC])
6708 return -EINVAL;
6709
6710 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6711 return -EINVAL;
6712
6713 if (!rdev->ops->disassoc)
6714 return -EOPNOTSUPP;
6715
6716 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6717 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6718 return -EOPNOTSUPP;
6719
6720 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6721
6722 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6723 if (reason_code == 0) {
6724 /* Reason Code 0 is reserved */
6725 return -EINVAL;
6726 }
6727
6728 if (info->attrs[NL80211_ATTR_IE]) {
6729 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6730 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6731 }
6732
6733 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6734
6735 wdev_lock(dev->ieee80211_ptr);
6736 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6737 local_state_change);
6738 wdev_unlock(dev->ieee80211_ptr);
6739 return err;
6740 }
6741
6742 static bool
6743 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6744 int mcast_rate[IEEE80211_NUM_BANDS],
6745 int rateval)
6746 {
6747 struct wiphy *wiphy = &rdev->wiphy;
6748 bool found = false;
6749 int band, i;
6750
6751 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6752 struct ieee80211_supported_band *sband;
6753
6754 sband = wiphy->bands[band];
6755 if (!sband)
6756 continue;
6757
6758 for (i = 0; i < sband->n_bitrates; i++) {
6759 if (sband->bitrates[i].bitrate == rateval) {
6760 mcast_rate[band] = i + 1;
6761 found = true;
6762 break;
6763 }
6764 }
6765 }
6766
6767 return found;
6768 }
6769
6770 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6771 {
6772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6773 struct net_device *dev = info->user_ptr[1];
6774 struct cfg80211_ibss_params ibss;
6775 struct wiphy *wiphy;
6776 struct cfg80211_cached_keys *connkeys = NULL;
6777 int err;
6778
6779 memset(&ibss, 0, sizeof(ibss));
6780
6781 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6782 return -EINVAL;
6783
6784 if (!info->attrs[NL80211_ATTR_SSID] ||
6785 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6786 return -EINVAL;
6787
6788 ibss.beacon_interval = 100;
6789
6790 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6791 ibss.beacon_interval =
6792 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6793 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6794 return -EINVAL;
6795 }
6796
6797 if (!rdev->ops->join_ibss)
6798 return -EOPNOTSUPP;
6799
6800 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6801 return -EOPNOTSUPP;
6802
6803 wiphy = &rdev->wiphy;
6804
6805 if (info->attrs[NL80211_ATTR_MAC]) {
6806 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6807
6808 if (!is_valid_ether_addr(ibss.bssid))
6809 return -EINVAL;
6810 }
6811 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6812 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6813
6814 if (info->attrs[NL80211_ATTR_IE]) {
6815 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6816 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6817 }
6818
6819 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6820 if (err)
6821 return err;
6822
6823 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6824 NL80211_IFTYPE_ADHOC))
6825 return -EINVAL;
6826
6827 switch (ibss.chandef.width) {
6828 case NL80211_CHAN_WIDTH_5:
6829 case NL80211_CHAN_WIDTH_10:
6830 case NL80211_CHAN_WIDTH_20_NOHT:
6831 break;
6832 case NL80211_CHAN_WIDTH_20:
6833 case NL80211_CHAN_WIDTH_40:
6834 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6835 break;
6836 default:
6837 return -EINVAL;
6838 }
6839
6840 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6841 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6842
6843 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6844 u8 *rates =
6845 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6846 int n_rates =
6847 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6848 struct ieee80211_supported_band *sband =
6849 wiphy->bands[ibss.chandef.chan->band];
6850
6851 err = ieee80211_get_ratemask(sband, rates, n_rates,
6852 &ibss.basic_rates);
6853 if (err)
6854 return err;
6855 }
6856
6857 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6858 memcpy(&ibss.ht_capa_mask,
6859 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6860 sizeof(ibss.ht_capa_mask));
6861
6862 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6863 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6864 return -EINVAL;
6865 memcpy(&ibss.ht_capa,
6866 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6867 sizeof(ibss.ht_capa));
6868 }
6869
6870 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6871 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6872 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6873 return -EINVAL;
6874
6875 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6876 bool no_ht = false;
6877
6878 connkeys = nl80211_parse_connkeys(rdev,
6879 info->attrs[NL80211_ATTR_KEYS],
6880 &no_ht);
6881 if (IS_ERR(connkeys))
6882 return PTR_ERR(connkeys);
6883
6884 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6885 no_ht) {
6886 kfree(connkeys);
6887 return -EINVAL;
6888 }
6889 }
6890
6891 ibss.control_port =
6892 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6893
6894 ibss.userspace_handles_dfs =
6895 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6896
6897 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6898 if (err)
6899 kzfree(connkeys);
6900 return err;
6901 }
6902
6903 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6904 {
6905 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6906 struct net_device *dev = info->user_ptr[1];
6907
6908 if (!rdev->ops->leave_ibss)
6909 return -EOPNOTSUPP;
6910
6911 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6912 return -EOPNOTSUPP;
6913
6914 return cfg80211_leave_ibss(rdev, dev, false);
6915 }
6916
6917 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6918 {
6919 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6920 struct net_device *dev = info->user_ptr[1];
6921 int mcast_rate[IEEE80211_NUM_BANDS];
6922 u32 nla_rate;
6923 int err;
6924
6925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6926 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6927 return -EOPNOTSUPP;
6928
6929 if (!rdev->ops->set_mcast_rate)
6930 return -EOPNOTSUPP;
6931
6932 memset(mcast_rate, 0, sizeof(mcast_rate));
6933
6934 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6935 return -EINVAL;
6936
6937 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6938 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6939 return -EINVAL;
6940
6941 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6942
6943 return err;
6944 }
6945
6946 static struct sk_buff *
6947 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6948 int approxlen, u32 portid, u32 seq,
6949 enum nl80211_commands cmd,
6950 enum nl80211_attrs attr,
6951 const struct nl80211_vendor_cmd_info *info,
6952 gfp_t gfp)
6953 {
6954 struct sk_buff *skb;
6955 void *hdr;
6956 struct nlattr *data;
6957
6958 skb = nlmsg_new(approxlen + 100, gfp);
6959 if (!skb)
6960 return NULL;
6961
6962 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6963 if (!hdr) {
6964 kfree_skb(skb);
6965 return NULL;
6966 }
6967
6968 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6969 goto nla_put_failure;
6970
6971 if (info) {
6972 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6973 info->vendor_id))
6974 goto nla_put_failure;
6975 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6976 info->subcmd))
6977 goto nla_put_failure;
6978 }
6979
6980 data = nla_nest_start(skb, attr);
6981
6982 ((void **)skb->cb)[0] = rdev;
6983 ((void **)skb->cb)[1] = hdr;
6984 ((void **)skb->cb)[2] = data;
6985
6986 return skb;
6987
6988 nla_put_failure:
6989 kfree_skb(skb);
6990 return NULL;
6991 }
6992
6993 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6994 enum nl80211_commands cmd,
6995 enum nl80211_attrs attr,
6996 int vendor_event_idx,
6997 int approxlen, gfp_t gfp)
6998 {
6999 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7000 const struct nl80211_vendor_cmd_info *info;
7001
7002 switch (cmd) {
7003 case NL80211_CMD_TESTMODE:
7004 if (WARN_ON(vendor_event_idx != -1))
7005 return NULL;
7006 info = NULL;
7007 break;
7008 case NL80211_CMD_VENDOR:
7009 if (WARN_ON(vendor_event_idx < 0 ||
7010 vendor_event_idx >= wiphy->n_vendor_events))
7011 return NULL;
7012 info = &wiphy->vendor_events[vendor_event_idx];
7013 break;
7014 default:
7015 WARN_ON(1);
7016 return NULL;
7017 }
7018
7019 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7020 cmd, attr, info, gfp);
7021 }
7022 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7023
7024 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7025 {
7026 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7027 void *hdr = ((void **)skb->cb)[1];
7028 struct nlattr *data = ((void **)skb->cb)[2];
7029 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7030
7031 /* clear CB data for netlink core to own from now on */
7032 memset(skb->cb, 0, sizeof(skb->cb));
7033
7034 nla_nest_end(skb, data);
7035 genlmsg_end(skb, hdr);
7036
7037 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7038 mcgrp = NL80211_MCGRP_VENDOR;
7039
7040 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7041 mcgrp, gfp);
7042 }
7043 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7044
7045 #ifdef CONFIG_NL80211_TESTMODE
7046 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7047 {
7048 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7049 struct wireless_dev *wdev =
7050 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7051 int err;
7052
7053 if (!rdev->ops->testmode_cmd)
7054 return -EOPNOTSUPP;
7055
7056 if (IS_ERR(wdev)) {
7057 err = PTR_ERR(wdev);
7058 if (err != -EINVAL)
7059 return err;
7060 wdev = NULL;
7061 } else if (wdev->wiphy != &rdev->wiphy) {
7062 return -EINVAL;
7063 }
7064
7065 if (!info->attrs[NL80211_ATTR_TESTDATA])
7066 return -EINVAL;
7067
7068 rdev->cur_cmd_info = info;
7069 err = rdev_testmode_cmd(rdev, wdev,
7070 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7071 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7072 rdev->cur_cmd_info = NULL;
7073
7074 return err;
7075 }
7076
7077 static int nl80211_testmode_dump(struct sk_buff *skb,
7078 struct netlink_callback *cb)
7079 {
7080 struct cfg80211_registered_device *rdev;
7081 int err;
7082 long phy_idx;
7083 void *data = NULL;
7084 int data_len = 0;
7085
7086 rtnl_lock();
7087
7088 if (cb->args[0]) {
7089 /*
7090 * 0 is a valid index, but not valid for args[0],
7091 * so we need to offset by 1.
7092 */
7093 phy_idx = cb->args[0] - 1;
7094 } else {
7095 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7096 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7097 nl80211_policy);
7098 if (err)
7099 goto out_err;
7100
7101 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7102 nl80211_fam.attrbuf);
7103 if (IS_ERR(rdev)) {
7104 err = PTR_ERR(rdev);
7105 goto out_err;
7106 }
7107 phy_idx = rdev->wiphy_idx;
7108 rdev = NULL;
7109
7110 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7111 cb->args[1] =
7112 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7113 }
7114
7115 if (cb->args[1]) {
7116 data = nla_data((void *)cb->args[1]);
7117 data_len = nla_len((void *)cb->args[1]);
7118 }
7119
7120 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7121 if (!rdev) {
7122 err = -ENOENT;
7123 goto out_err;
7124 }
7125
7126 if (!rdev->ops->testmode_dump) {
7127 err = -EOPNOTSUPP;
7128 goto out_err;
7129 }
7130
7131 while (1) {
7132 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7133 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7134 NL80211_CMD_TESTMODE);
7135 struct nlattr *tmdata;
7136
7137 if (!hdr)
7138 break;
7139
7140 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7141 genlmsg_cancel(skb, hdr);
7142 break;
7143 }
7144
7145 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7146 if (!tmdata) {
7147 genlmsg_cancel(skb, hdr);
7148 break;
7149 }
7150 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7151 nla_nest_end(skb, tmdata);
7152
7153 if (err == -ENOBUFS || err == -ENOENT) {
7154 genlmsg_cancel(skb, hdr);
7155 break;
7156 } else if (err) {
7157 genlmsg_cancel(skb, hdr);
7158 goto out_err;
7159 }
7160
7161 genlmsg_end(skb, hdr);
7162 }
7163
7164 err = skb->len;
7165 /* see above */
7166 cb->args[0] = phy_idx + 1;
7167 out_err:
7168 rtnl_unlock();
7169 return err;
7170 }
7171 #endif
7172
7173 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7174 {
7175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7176 struct net_device *dev = info->user_ptr[1];
7177 struct cfg80211_connect_params connect;
7178 struct wiphy *wiphy;
7179 struct cfg80211_cached_keys *connkeys = NULL;
7180 int err;
7181
7182 memset(&connect, 0, sizeof(connect));
7183
7184 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7185 return -EINVAL;
7186
7187 if (!info->attrs[NL80211_ATTR_SSID] ||
7188 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7189 return -EINVAL;
7190
7191 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7192 connect.auth_type =
7193 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7194 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7195 NL80211_CMD_CONNECT))
7196 return -EINVAL;
7197 } else
7198 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7199
7200 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7201
7202 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7203 NL80211_MAX_NR_CIPHER_SUITES);
7204 if (err)
7205 return err;
7206
7207 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7208 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7209 return -EOPNOTSUPP;
7210
7211 wiphy = &rdev->wiphy;
7212
7213 connect.bg_scan_period = -1;
7214 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7215 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7216 connect.bg_scan_period =
7217 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7218 }
7219
7220 if (info->attrs[NL80211_ATTR_MAC])
7221 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7222 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7223 connect.bssid_hint =
7224 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7225 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7226 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7227
7228 if (info->attrs[NL80211_ATTR_IE]) {
7229 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7230 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7231 }
7232
7233 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7234 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7235 if (connect.mfp != NL80211_MFP_REQUIRED &&
7236 connect.mfp != NL80211_MFP_NO)
7237 return -EINVAL;
7238 } else {
7239 connect.mfp = NL80211_MFP_NO;
7240 }
7241
7242 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7243 connect.channel = nl80211_get_valid_chan(
7244 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7245 if (!connect.channel)
7246 return -EINVAL;
7247 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7248 connect.channel_hint = nl80211_get_valid_chan(
7249 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7250 if (!connect.channel_hint)
7251 return -EINVAL;
7252 }
7253
7254 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7255 connkeys = nl80211_parse_connkeys(rdev,
7256 info->attrs[NL80211_ATTR_KEYS], NULL);
7257 if (IS_ERR(connkeys))
7258 return PTR_ERR(connkeys);
7259 }
7260
7261 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7262 connect.flags |= ASSOC_REQ_DISABLE_HT;
7263
7264 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7265 memcpy(&connect.ht_capa_mask,
7266 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7267 sizeof(connect.ht_capa_mask));
7268
7269 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7270 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7271 kzfree(connkeys);
7272 return -EINVAL;
7273 }
7274 memcpy(&connect.ht_capa,
7275 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7276 sizeof(connect.ht_capa));
7277 }
7278
7279 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7280 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7281
7282 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7283 memcpy(&connect.vht_capa_mask,
7284 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7285 sizeof(connect.vht_capa_mask));
7286
7287 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7288 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7289 kzfree(connkeys);
7290 return -EINVAL;
7291 }
7292 memcpy(&connect.vht_capa,
7293 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7294 sizeof(connect.vht_capa));
7295 }
7296
7297 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7298 if (!(rdev->wiphy.features &
7299 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7300 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7301 return -EINVAL;
7302 connect.flags |= ASSOC_REQ_USE_RRM;
7303 }
7304
7305 wdev_lock(dev->ieee80211_ptr);
7306 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7307 wdev_unlock(dev->ieee80211_ptr);
7308 if (err)
7309 kzfree(connkeys);
7310 return err;
7311 }
7312
7313 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7314 {
7315 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7316 struct net_device *dev = info->user_ptr[1];
7317 u16 reason;
7318 int ret;
7319
7320 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7321 reason = WLAN_REASON_DEAUTH_LEAVING;
7322 else
7323 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7324
7325 if (reason == 0)
7326 return -EINVAL;
7327
7328 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7329 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7330 return -EOPNOTSUPP;
7331
7332 wdev_lock(dev->ieee80211_ptr);
7333 ret = cfg80211_disconnect(rdev, dev, reason, true);
7334 wdev_unlock(dev->ieee80211_ptr);
7335 return ret;
7336 }
7337
7338 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7339 {
7340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7341 struct net *net;
7342 int err;
7343 u32 pid;
7344
7345 if (!info->attrs[NL80211_ATTR_PID])
7346 return -EINVAL;
7347
7348 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7349
7350 net = get_net_ns_by_pid(pid);
7351 if (IS_ERR(net))
7352 return PTR_ERR(net);
7353
7354 err = 0;
7355
7356 /* check if anything to do */
7357 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7358 err = cfg80211_switch_netns(rdev, net);
7359
7360 put_net(net);
7361 return err;
7362 }
7363
7364 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7365 {
7366 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7367 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7368 struct cfg80211_pmksa *pmksa) = NULL;
7369 struct net_device *dev = info->user_ptr[1];
7370 struct cfg80211_pmksa pmksa;
7371
7372 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7373
7374 if (!info->attrs[NL80211_ATTR_MAC])
7375 return -EINVAL;
7376
7377 if (!info->attrs[NL80211_ATTR_PMKID])
7378 return -EINVAL;
7379
7380 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7381 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7382
7383 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7384 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7385 return -EOPNOTSUPP;
7386
7387 switch (info->genlhdr->cmd) {
7388 case NL80211_CMD_SET_PMKSA:
7389 rdev_ops = rdev->ops->set_pmksa;
7390 break;
7391 case NL80211_CMD_DEL_PMKSA:
7392 rdev_ops = rdev->ops->del_pmksa;
7393 break;
7394 default:
7395 WARN_ON(1);
7396 break;
7397 }
7398
7399 if (!rdev_ops)
7400 return -EOPNOTSUPP;
7401
7402 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7403 }
7404
7405 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7406 {
7407 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7408 struct net_device *dev = info->user_ptr[1];
7409
7410 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7411 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7412 return -EOPNOTSUPP;
7413
7414 if (!rdev->ops->flush_pmksa)
7415 return -EOPNOTSUPP;
7416
7417 return rdev_flush_pmksa(rdev, dev);
7418 }
7419
7420 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7421 {
7422 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7423 struct net_device *dev = info->user_ptr[1];
7424 u8 action_code, dialog_token;
7425 u32 peer_capability = 0;
7426 u16 status_code;
7427 u8 *peer;
7428 bool initiator;
7429
7430 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7431 !rdev->ops->tdls_mgmt)
7432 return -EOPNOTSUPP;
7433
7434 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7435 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7436 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7437 !info->attrs[NL80211_ATTR_IE] ||
7438 !info->attrs[NL80211_ATTR_MAC])
7439 return -EINVAL;
7440
7441 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7442 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7443 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7444 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7445 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7446 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7447 peer_capability =
7448 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7449
7450 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7451 dialog_token, status_code, peer_capability,
7452 initiator,
7453 nla_data(info->attrs[NL80211_ATTR_IE]),
7454 nla_len(info->attrs[NL80211_ATTR_IE]));
7455 }
7456
7457 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7458 {
7459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7460 struct net_device *dev = info->user_ptr[1];
7461 enum nl80211_tdls_operation operation;
7462 u8 *peer;
7463
7464 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7465 !rdev->ops->tdls_oper)
7466 return -EOPNOTSUPP;
7467
7468 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7469 !info->attrs[NL80211_ATTR_MAC])
7470 return -EINVAL;
7471
7472 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7473 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7474
7475 return rdev_tdls_oper(rdev, dev, peer, operation);
7476 }
7477
7478 static int nl80211_remain_on_channel(struct sk_buff *skb,
7479 struct genl_info *info)
7480 {
7481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7482 struct wireless_dev *wdev = info->user_ptr[1];
7483 struct cfg80211_chan_def chandef;
7484 struct sk_buff *msg;
7485 void *hdr;
7486 u64 cookie;
7487 u32 duration;
7488 int err;
7489
7490 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7491 !info->attrs[NL80211_ATTR_DURATION])
7492 return -EINVAL;
7493
7494 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7495
7496 if (!rdev->ops->remain_on_channel ||
7497 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7498 return -EOPNOTSUPP;
7499
7500 /*
7501 * We should be on that channel for at least a minimum amount of
7502 * time (10ms) but no longer than the driver supports.
7503 */
7504 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7505 duration > rdev->wiphy.max_remain_on_channel_duration)
7506 return -EINVAL;
7507
7508 err = nl80211_parse_chandef(rdev, info, &chandef);
7509 if (err)
7510 return err;
7511
7512 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7513 if (!msg)
7514 return -ENOMEM;
7515
7516 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7517 NL80211_CMD_REMAIN_ON_CHANNEL);
7518 if (!hdr) {
7519 err = -ENOBUFS;
7520 goto free_msg;
7521 }
7522
7523 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7524 duration, &cookie);
7525
7526 if (err)
7527 goto free_msg;
7528
7529 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7530 goto nla_put_failure;
7531
7532 genlmsg_end(msg, hdr);
7533
7534 return genlmsg_reply(msg, info);
7535
7536 nla_put_failure:
7537 err = -ENOBUFS;
7538 free_msg:
7539 nlmsg_free(msg);
7540 return err;
7541 }
7542
7543 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7544 struct genl_info *info)
7545 {
7546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7547 struct wireless_dev *wdev = info->user_ptr[1];
7548 u64 cookie;
7549
7550 if (!info->attrs[NL80211_ATTR_COOKIE])
7551 return -EINVAL;
7552
7553 if (!rdev->ops->cancel_remain_on_channel)
7554 return -EOPNOTSUPP;
7555
7556 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7557
7558 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7559 }
7560
7561 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7562 u8 *rates, u8 rates_len)
7563 {
7564 u8 i;
7565 u32 mask = 0;
7566
7567 for (i = 0; i < rates_len; i++) {
7568 int rate = (rates[i] & 0x7f) * 5;
7569 int ridx;
7570 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7571 struct ieee80211_rate *srate =
7572 &sband->bitrates[ridx];
7573 if (rate == srate->bitrate) {
7574 mask |= 1 << ridx;
7575 break;
7576 }
7577 }
7578 if (ridx == sband->n_bitrates)
7579 return 0; /* rate not found */
7580 }
7581
7582 return mask;
7583 }
7584
7585 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7586 u8 *rates, u8 rates_len,
7587 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7588 {
7589 u8 i;
7590
7591 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7592
7593 for (i = 0; i < rates_len; i++) {
7594 int ridx, rbit;
7595
7596 ridx = rates[i] / 8;
7597 rbit = BIT(rates[i] % 8);
7598
7599 /* check validity */
7600 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7601 return false;
7602
7603 /* check availability */
7604 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7605 mcs[ridx] |= rbit;
7606 else
7607 return false;
7608 }
7609
7610 return true;
7611 }
7612
7613 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7614 {
7615 u16 mcs_mask = 0;
7616
7617 switch (vht_mcs_map) {
7618 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7619 break;
7620 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7621 mcs_mask = 0x00FF;
7622 break;
7623 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7624 mcs_mask = 0x01FF;
7625 break;
7626 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7627 mcs_mask = 0x03FF;
7628 break;
7629 default:
7630 break;
7631 }
7632
7633 return mcs_mask;
7634 }
7635
7636 static void vht_build_mcs_mask(u16 vht_mcs_map,
7637 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7638 {
7639 u8 nss;
7640
7641 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7642 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7643 vht_mcs_map >>= 2;
7644 }
7645 }
7646
7647 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7648 struct nl80211_txrate_vht *txrate,
7649 u16 mcs[NL80211_VHT_NSS_MAX])
7650 {
7651 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7652 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7653 u8 i;
7654
7655 if (!sband->vht_cap.vht_supported)
7656 return false;
7657
7658 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7659
7660 /* Build vht_mcs_mask from VHT capabilities */
7661 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7662
7663 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7664 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7665 mcs[i] = txrate->mcs[i];
7666 else
7667 return false;
7668 }
7669
7670 return true;
7671 }
7672
7673 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7674 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7675 .len = NL80211_MAX_SUPP_RATES },
7676 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7677 .len = NL80211_MAX_SUPP_HT_RATES },
7678 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7679 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7680 };
7681
7682 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7683 struct genl_info *info)
7684 {
7685 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7686 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7687 struct cfg80211_bitrate_mask mask;
7688 int rem, i;
7689 struct net_device *dev = info->user_ptr[1];
7690 struct nlattr *tx_rates;
7691 struct ieee80211_supported_band *sband;
7692 u16 vht_tx_mcs_map;
7693
7694 if (!rdev->ops->set_bitrate_mask)
7695 return -EOPNOTSUPP;
7696
7697 memset(&mask, 0, sizeof(mask));
7698 /* Default to all rates enabled */
7699 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7700 sband = rdev->wiphy.bands[i];
7701
7702 if (!sband)
7703 continue;
7704
7705 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7706 memcpy(mask.control[i].ht_mcs,
7707 sband->ht_cap.mcs.rx_mask,
7708 sizeof(mask.control[i].ht_mcs));
7709
7710 if (!sband->vht_cap.vht_supported)
7711 continue;
7712
7713 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7714 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7715 }
7716
7717 /* if no rates are given set it back to the defaults */
7718 if (!info->attrs[NL80211_ATTR_TX_RATES])
7719 goto out;
7720
7721 /*
7722 * The nested attribute uses enum nl80211_band as the index. This maps
7723 * directly to the enum ieee80211_band values used in cfg80211.
7724 */
7725 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7726 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7727 enum ieee80211_band band = nla_type(tx_rates);
7728 int err;
7729
7730 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7731 return -EINVAL;
7732 sband = rdev->wiphy.bands[band];
7733 if (sband == NULL)
7734 return -EINVAL;
7735 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7736 nla_len(tx_rates), nl80211_txattr_policy);
7737 if (err)
7738 return err;
7739 if (tb[NL80211_TXRATE_LEGACY]) {
7740 mask.control[band].legacy = rateset_to_mask(
7741 sband,
7742 nla_data(tb[NL80211_TXRATE_LEGACY]),
7743 nla_len(tb[NL80211_TXRATE_LEGACY]));
7744 if ((mask.control[band].legacy == 0) &&
7745 nla_len(tb[NL80211_TXRATE_LEGACY]))
7746 return -EINVAL;
7747 }
7748 if (tb[NL80211_TXRATE_HT]) {
7749 if (!ht_rateset_to_mask(
7750 sband,
7751 nla_data(tb[NL80211_TXRATE_HT]),
7752 nla_len(tb[NL80211_TXRATE_HT]),
7753 mask.control[band].ht_mcs))
7754 return -EINVAL;
7755 }
7756 if (tb[NL80211_TXRATE_VHT]) {
7757 if (!vht_set_mcs_mask(
7758 sband,
7759 nla_data(tb[NL80211_TXRATE_VHT]),
7760 mask.control[band].vht_mcs))
7761 return -EINVAL;
7762 }
7763 if (tb[NL80211_TXRATE_GI]) {
7764 mask.control[band].gi =
7765 nla_get_u8(tb[NL80211_TXRATE_GI]);
7766 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7767 return -EINVAL;
7768 }
7769
7770 if (mask.control[band].legacy == 0) {
7771 /* don't allow empty legacy rates if HT or VHT
7772 * are not even supported.
7773 */
7774 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7775 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7776 return -EINVAL;
7777
7778 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7779 if (mask.control[band].ht_mcs[i])
7780 goto out;
7781
7782 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7783 if (mask.control[band].vht_mcs[i])
7784 goto out;
7785
7786 /* legacy and mcs rates may not be both empty */
7787 return -EINVAL;
7788 }
7789 }
7790
7791 out:
7792 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7793 }
7794
7795 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7796 {
7797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7798 struct wireless_dev *wdev = info->user_ptr[1];
7799 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7800
7801 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7802 return -EINVAL;
7803
7804 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7805 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7806
7807 switch (wdev->iftype) {
7808 case NL80211_IFTYPE_STATION:
7809 case NL80211_IFTYPE_ADHOC:
7810 case NL80211_IFTYPE_P2P_CLIENT:
7811 case NL80211_IFTYPE_AP:
7812 case NL80211_IFTYPE_AP_VLAN:
7813 case NL80211_IFTYPE_MESH_POINT:
7814 case NL80211_IFTYPE_P2P_GO:
7815 case NL80211_IFTYPE_P2P_DEVICE:
7816 break;
7817 default:
7818 return -EOPNOTSUPP;
7819 }
7820
7821 /* not much point in registering if we can't reply */
7822 if (!rdev->ops->mgmt_tx)
7823 return -EOPNOTSUPP;
7824
7825 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7826 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7827 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7828 }
7829
7830 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7831 {
7832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7833 struct wireless_dev *wdev = info->user_ptr[1];
7834 struct cfg80211_chan_def chandef;
7835 int err;
7836 void *hdr = NULL;
7837 u64 cookie;
7838 struct sk_buff *msg = NULL;
7839 struct cfg80211_mgmt_tx_params params = {
7840 .dont_wait_for_ack =
7841 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7842 };
7843
7844 if (!info->attrs[NL80211_ATTR_FRAME])
7845 return -EINVAL;
7846
7847 if (!rdev->ops->mgmt_tx)
7848 return -EOPNOTSUPP;
7849
7850 switch (wdev->iftype) {
7851 case NL80211_IFTYPE_P2P_DEVICE:
7852 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7853 return -EINVAL;
7854 case NL80211_IFTYPE_STATION:
7855 case NL80211_IFTYPE_ADHOC:
7856 case NL80211_IFTYPE_P2P_CLIENT:
7857 case NL80211_IFTYPE_AP:
7858 case NL80211_IFTYPE_AP_VLAN:
7859 case NL80211_IFTYPE_MESH_POINT:
7860 case NL80211_IFTYPE_P2P_GO:
7861 break;
7862 default:
7863 return -EOPNOTSUPP;
7864 }
7865
7866 if (info->attrs[NL80211_ATTR_DURATION]) {
7867 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7868 return -EINVAL;
7869 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7870
7871 /*
7872 * We should wait on the channel for at least a minimum amount
7873 * of time (10ms) but no longer than the driver supports.
7874 */
7875 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7876 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7877 return -EINVAL;
7878
7879 }
7880
7881 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7882
7883 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7884 return -EINVAL;
7885
7886 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7887
7888 /* get the channel if any has been specified, otherwise pass NULL to
7889 * the driver. The latter will use the current one
7890 */
7891 chandef.chan = NULL;
7892 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7893 err = nl80211_parse_chandef(rdev, info, &chandef);
7894 if (err)
7895 return err;
7896 }
7897
7898 if (!chandef.chan && params.offchan)
7899 return -EINVAL;
7900
7901 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7902 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7903
7904 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
7905 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7906 int i;
7907
7908 if (len % sizeof(u16))
7909 return -EINVAL;
7910
7911 params.n_csa_offsets = len / sizeof(u16);
7912 params.csa_offsets =
7913 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7914
7915 /* check that all the offsets fit the frame */
7916 for (i = 0; i < params.n_csa_offsets; i++) {
7917 if (params.csa_offsets[i] >= params.len)
7918 return -EINVAL;
7919 }
7920 }
7921
7922 if (!params.dont_wait_for_ack) {
7923 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7924 if (!msg)
7925 return -ENOMEM;
7926
7927 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7928 NL80211_CMD_FRAME);
7929 if (!hdr) {
7930 err = -ENOBUFS;
7931 goto free_msg;
7932 }
7933 }
7934
7935 params.chan = chandef.chan;
7936 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7937 if (err)
7938 goto free_msg;
7939
7940 if (msg) {
7941 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7942 goto nla_put_failure;
7943
7944 genlmsg_end(msg, hdr);
7945 return genlmsg_reply(msg, info);
7946 }
7947
7948 return 0;
7949
7950 nla_put_failure:
7951 err = -ENOBUFS;
7952 free_msg:
7953 nlmsg_free(msg);
7954 return err;
7955 }
7956
7957 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7958 {
7959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7960 struct wireless_dev *wdev = info->user_ptr[1];
7961 u64 cookie;
7962
7963 if (!info->attrs[NL80211_ATTR_COOKIE])
7964 return -EINVAL;
7965
7966 if (!rdev->ops->mgmt_tx_cancel_wait)
7967 return -EOPNOTSUPP;
7968
7969 switch (wdev->iftype) {
7970 case NL80211_IFTYPE_STATION:
7971 case NL80211_IFTYPE_ADHOC:
7972 case NL80211_IFTYPE_P2P_CLIENT:
7973 case NL80211_IFTYPE_AP:
7974 case NL80211_IFTYPE_AP_VLAN:
7975 case NL80211_IFTYPE_P2P_GO:
7976 case NL80211_IFTYPE_P2P_DEVICE:
7977 break;
7978 default:
7979 return -EOPNOTSUPP;
7980 }
7981
7982 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7983
7984 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7985 }
7986
7987 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7988 {
7989 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7990 struct wireless_dev *wdev;
7991 struct net_device *dev = info->user_ptr[1];
7992 u8 ps_state;
7993 bool state;
7994 int err;
7995
7996 if (!info->attrs[NL80211_ATTR_PS_STATE])
7997 return -EINVAL;
7998
7999 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8000
8001 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8002 return -EINVAL;
8003
8004 wdev = dev->ieee80211_ptr;
8005
8006 if (!rdev->ops->set_power_mgmt)
8007 return -EOPNOTSUPP;
8008
8009 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8010
8011 if (state == wdev->ps)
8012 return 0;
8013
8014 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8015 if (!err)
8016 wdev->ps = state;
8017 return err;
8018 }
8019
8020 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8021 {
8022 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8023 enum nl80211_ps_state ps_state;
8024 struct wireless_dev *wdev;
8025 struct net_device *dev = info->user_ptr[1];
8026 struct sk_buff *msg;
8027 void *hdr;
8028 int err;
8029
8030 wdev = dev->ieee80211_ptr;
8031
8032 if (!rdev->ops->set_power_mgmt)
8033 return -EOPNOTSUPP;
8034
8035 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8036 if (!msg)
8037 return -ENOMEM;
8038
8039 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8040 NL80211_CMD_GET_POWER_SAVE);
8041 if (!hdr) {
8042 err = -ENOBUFS;
8043 goto free_msg;
8044 }
8045
8046 if (wdev->ps)
8047 ps_state = NL80211_PS_ENABLED;
8048 else
8049 ps_state = NL80211_PS_DISABLED;
8050
8051 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8052 goto nla_put_failure;
8053
8054 genlmsg_end(msg, hdr);
8055 return genlmsg_reply(msg, info);
8056
8057 nla_put_failure:
8058 err = -ENOBUFS;
8059 free_msg:
8060 nlmsg_free(msg);
8061 return err;
8062 }
8063
8064 static const struct nla_policy
8065 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8066 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8067 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8068 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8069 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8070 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8071 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8072 };
8073
8074 static int nl80211_set_cqm_txe(struct genl_info *info,
8075 u32 rate, u32 pkts, u32 intvl)
8076 {
8077 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8078 struct net_device *dev = info->user_ptr[1];
8079 struct wireless_dev *wdev = dev->ieee80211_ptr;
8080
8081 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8082 return -EINVAL;
8083
8084 if (!rdev->ops->set_cqm_txe_config)
8085 return -EOPNOTSUPP;
8086
8087 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8088 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8089 return -EOPNOTSUPP;
8090
8091 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8092 }
8093
8094 static int nl80211_set_cqm_rssi(struct genl_info *info,
8095 s32 threshold, u32 hysteresis)
8096 {
8097 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8098 struct net_device *dev = info->user_ptr[1];
8099 struct wireless_dev *wdev = dev->ieee80211_ptr;
8100
8101 if (threshold > 0)
8102 return -EINVAL;
8103
8104 /* disabling - hysteresis should also be zero then */
8105 if (threshold == 0)
8106 hysteresis = 0;
8107
8108 if (!rdev->ops->set_cqm_rssi_config)
8109 return -EOPNOTSUPP;
8110
8111 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8112 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8113 return -EOPNOTSUPP;
8114
8115 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8116 }
8117
8118 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8119 {
8120 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8121 struct nlattr *cqm;
8122 int err;
8123
8124 cqm = info->attrs[NL80211_ATTR_CQM];
8125 if (!cqm)
8126 return -EINVAL;
8127
8128 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8129 nl80211_attr_cqm_policy);
8130 if (err)
8131 return err;
8132
8133 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8134 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8135 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8136 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8137
8138 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8139 }
8140
8141 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8142 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8143 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8144 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8145 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8146 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8147
8148 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8149 }
8150
8151 return -EINVAL;
8152 }
8153
8154 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8155 {
8156 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8157 struct net_device *dev = info->user_ptr[1];
8158 struct mesh_config cfg;
8159 struct mesh_setup setup;
8160 int err;
8161
8162 /* start with default */
8163 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8164 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8165
8166 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8167 /* and parse parameters if given */
8168 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8169 if (err)
8170 return err;
8171 }
8172
8173 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8174 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8175 return -EINVAL;
8176
8177 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8178 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8179
8180 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8181 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8182 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8183 return -EINVAL;
8184
8185 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8186 setup.beacon_interval =
8187 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8188 if (setup.beacon_interval < 10 ||
8189 setup.beacon_interval > 10000)
8190 return -EINVAL;
8191 }
8192
8193 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8194 setup.dtim_period =
8195 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8196 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8197 return -EINVAL;
8198 }
8199
8200 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8201 /* parse additional setup parameters if given */
8202 err = nl80211_parse_mesh_setup(info, &setup);
8203 if (err)
8204 return err;
8205 }
8206
8207 if (setup.user_mpm)
8208 cfg.auto_open_plinks = false;
8209
8210 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8211 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8212 if (err)
8213 return err;
8214 } else {
8215 /* cfg80211_join_mesh() will sort it out */
8216 setup.chandef.chan = NULL;
8217 }
8218
8219 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8220 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8221 int n_rates =
8222 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8223 struct ieee80211_supported_band *sband;
8224
8225 if (!setup.chandef.chan)
8226 return -EINVAL;
8227
8228 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8229
8230 err = ieee80211_get_ratemask(sband, rates, n_rates,
8231 &setup.basic_rates);
8232 if (err)
8233 return err;
8234 }
8235
8236 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8237 }
8238
8239 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8240 {
8241 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8242 struct net_device *dev = info->user_ptr[1];
8243
8244 return cfg80211_leave_mesh(rdev, dev);
8245 }
8246
8247 #ifdef CONFIG_PM
8248 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8249 struct cfg80211_registered_device *rdev)
8250 {
8251 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8252 struct nlattr *nl_pats, *nl_pat;
8253 int i, pat_len;
8254
8255 if (!wowlan->n_patterns)
8256 return 0;
8257
8258 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8259 if (!nl_pats)
8260 return -ENOBUFS;
8261
8262 for (i = 0; i < wowlan->n_patterns; i++) {
8263 nl_pat = nla_nest_start(msg, i + 1);
8264 if (!nl_pat)
8265 return -ENOBUFS;
8266 pat_len = wowlan->patterns[i].pattern_len;
8267 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8268 wowlan->patterns[i].mask) ||
8269 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8270 wowlan->patterns[i].pattern) ||
8271 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8272 wowlan->patterns[i].pkt_offset))
8273 return -ENOBUFS;
8274 nla_nest_end(msg, nl_pat);
8275 }
8276 nla_nest_end(msg, nl_pats);
8277
8278 return 0;
8279 }
8280
8281 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8282 struct cfg80211_wowlan_tcp *tcp)
8283 {
8284 struct nlattr *nl_tcp;
8285
8286 if (!tcp)
8287 return 0;
8288
8289 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8290 if (!nl_tcp)
8291 return -ENOBUFS;
8292
8293 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8294 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8295 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8296 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8297 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8298 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8299 tcp->payload_len, tcp->payload) ||
8300 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8301 tcp->data_interval) ||
8302 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8303 tcp->wake_len, tcp->wake_data) ||
8304 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8305 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8306 return -ENOBUFS;
8307
8308 if (tcp->payload_seq.len &&
8309 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8310 sizeof(tcp->payload_seq), &tcp->payload_seq))
8311 return -ENOBUFS;
8312
8313 if (tcp->payload_tok.len &&
8314 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8315 sizeof(tcp->payload_tok) + tcp->tokens_size,
8316 &tcp->payload_tok))
8317 return -ENOBUFS;
8318
8319 nla_nest_end(msg, nl_tcp);
8320
8321 return 0;
8322 }
8323
8324 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8325 {
8326 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8327 struct sk_buff *msg;
8328 void *hdr;
8329 u32 size = NLMSG_DEFAULT_SIZE;
8330
8331 if (!rdev->wiphy.wowlan)
8332 return -EOPNOTSUPP;
8333
8334 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8335 /* adjust size to have room for all the data */
8336 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8337 rdev->wiphy.wowlan_config->tcp->payload_len +
8338 rdev->wiphy.wowlan_config->tcp->wake_len +
8339 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8340 }
8341
8342 msg = nlmsg_new(size, GFP_KERNEL);
8343 if (!msg)
8344 return -ENOMEM;
8345
8346 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8347 NL80211_CMD_GET_WOWLAN);
8348 if (!hdr)
8349 goto nla_put_failure;
8350
8351 if (rdev->wiphy.wowlan_config) {
8352 struct nlattr *nl_wowlan;
8353
8354 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8355 if (!nl_wowlan)
8356 goto nla_put_failure;
8357
8358 if ((rdev->wiphy.wowlan_config->any &&
8359 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8360 (rdev->wiphy.wowlan_config->disconnect &&
8361 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8362 (rdev->wiphy.wowlan_config->magic_pkt &&
8363 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8364 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8365 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8366 (rdev->wiphy.wowlan_config->eap_identity_req &&
8367 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8368 (rdev->wiphy.wowlan_config->four_way_handshake &&
8369 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8370 (rdev->wiphy.wowlan_config->rfkill_release &&
8371 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8372 goto nla_put_failure;
8373
8374 if (nl80211_send_wowlan_patterns(msg, rdev))
8375 goto nla_put_failure;
8376
8377 if (nl80211_send_wowlan_tcp(msg,
8378 rdev->wiphy.wowlan_config->tcp))
8379 goto nla_put_failure;
8380
8381 nla_nest_end(msg, nl_wowlan);
8382 }
8383
8384 genlmsg_end(msg, hdr);
8385 return genlmsg_reply(msg, info);
8386
8387 nla_put_failure:
8388 nlmsg_free(msg);
8389 return -ENOBUFS;
8390 }
8391
8392 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8393 struct nlattr *attr,
8394 struct cfg80211_wowlan *trig)
8395 {
8396 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8397 struct cfg80211_wowlan_tcp *cfg;
8398 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8399 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8400 u32 size;
8401 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8402 int err, port;
8403
8404 if (!rdev->wiphy.wowlan->tcp)
8405 return -EINVAL;
8406
8407 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8408 nla_data(attr), nla_len(attr),
8409 nl80211_wowlan_tcp_policy);
8410 if (err)
8411 return err;
8412
8413 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8414 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8415 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8416 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8417 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8418 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8419 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8420 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8421 return -EINVAL;
8422
8423 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8424 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8425 return -EINVAL;
8426
8427 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8428 rdev->wiphy.wowlan->tcp->data_interval_max ||
8429 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8430 return -EINVAL;
8431
8432 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8433 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8434 return -EINVAL;
8435
8436 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8437 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8438 return -EINVAL;
8439
8440 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8441 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8442
8443 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8444 tokens_size = tokln - sizeof(*tok);
8445
8446 if (!tok->len || tokens_size % tok->len)
8447 return -EINVAL;
8448 if (!rdev->wiphy.wowlan->tcp->tok)
8449 return -EINVAL;
8450 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8451 return -EINVAL;
8452 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8453 return -EINVAL;
8454 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8455 return -EINVAL;
8456 if (tok->offset + tok->len > data_size)
8457 return -EINVAL;
8458 }
8459
8460 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8461 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8462 if (!rdev->wiphy.wowlan->tcp->seq)
8463 return -EINVAL;
8464 if (seq->len == 0 || seq->len > 4)
8465 return -EINVAL;
8466 if (seq->len + seq->offset > data_size)
8467 return -EINVAL;
8468 }
8469
8470 size = sizeof(*cfg);
8471 size += data_size;
8472 size += wake_size + wake_mask_size;
8473 size += tokens_size;
8474
8475 cfg = kzalloc(size, GFP_KERNEL);
8476 if (!cfg)
8477 return -ENOMEM;
8478 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8479 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8480 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8481 ETH_ALEN);
8482 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8483 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8484 else
8485 port = 0;
8486 #ifdef CONFIG_INET
8487 /* allocate a socket and port for it and use it */
8488 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8489 IPPROTO_TCP, &cfg->sock, 1);
8490 if (err) {
8491 kfree(cfg);
8492 return err;
8493 }
8494 if (inet_csk_get_port(cfg->sock->sk, port)) {
8495 sock_release(cfg->sock);
8496 kfree(cfg);
8497 return -EADDRINUSE;
8498 }
8499 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8500 #else
8501 if (!port) {
8502 kfree(cfg);
8503 return -EINVAL;
8504 }
8505 cfg->src_port = port;
8506 #endif
8507
8508 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8509 cfg->payload_len = data_size;
8510 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8511 memcpy((void *)cfg->payload,
8512 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8513 data_size);
8514 if (seq)
8515 cfg->payload_seq = *seq;
8516 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8517 cfg->wake_len = wake_size;
8518 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8519 memcpy((void *)cfg->wake_data,
8520 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8521 wake_size);
8522 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8523 data_size + wake_size;
8524 memcpy((void *)cfg->wake_mask,
8525 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8526 wake_mask_size);
8527 if (tok) {
8528 cfg->tokens_size = tokens_size;
8529 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8530 }
8531
8532 trig->tcp = cfg;
8533
8534 return 0;
8535 }
8536
8537 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8538 {
8539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8541 struct cfg80211_wowlan new_triggers = {};
8542 struct cfg80211_wowlan *ntrig;
8543 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8544 int err, i;
8545 bool prev_enabled = rdev->wiphy.wowlan_config;
8546
8547 if (!wowlan)
8548 return -EOPNOTSUPP;
8549
8550 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8551 cfg80211_rdev_free_wowlan(rdev);
8552 rdev->wiphy.wowlan_config = NULL;
8553 goto set_wakeup;
8554 }
8555
8556 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8557 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8558 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8559 nl80211_wowlan_policy);
8560 if (err)
8561 return err;
8562
8563 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8564 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8565 return -EINVAL;
8566 new_triggers.any = true;
8567 }
8568
8569 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8570 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8571 return -EINVAL;
8572 new_triggers.disconnect = true;
8573 }
8574
8575 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8576 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8577 return -EINVAL;
8578 new_triggers.magic_pkt = true;
8579 }
8580
8581 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8582 return -EINVAL;
8583
8584 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8585 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8586 return -EINVAL;
8587 new_triggers.gtk_rekey_failure = true;
8588 }
8589
8590 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8591 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8592 return -EINVAL;
8593 new_triggers.eap_identity_req = true;
8594 }
8595
8596 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8597 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8598 return -EINVAL;
8599 new_triggers.four_way_handshake = true;
8600 }
8601
8602 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8603 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8604 return -EINVAL;
8605 new_triggers.rfkill_release = true;
8606 }
8607
8608 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8609 struct nlattr *pat;
8610 int n_patterns = 0;
8611 int rem, pat_len, mask_len, pkt_offset;
8612 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8613
8614 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8615 rem)
8616 n_patterns++;
8617 if (n_patterns > wowlan->n_patterns)
8618 return -EINVAL;
8619
8620 new_triggers.patterns = kcalloc(n_patterns,
8621 sizeof(new_triggers.patterns[0]),
8622 GFP_KERNEL);
8623 if (!new_triggers.patterns)
8624 return -ENOMEM;
8625
8626 new_triggers.n_patterns = n_patterns;
8627 i = 0;
8628
8629 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8630 rem) {
8631 u8 *mask_pat;
8632
8633 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8634 nla_len(pat), NULL);
8635 err = -EINVAL;
8636 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8637 !pat_tb[NL80211_PKTPAT_PATTERN])
8638 goto error;
8639 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8640 mask_len = DIV_ROUND_UP(pat_len, 8);
8641 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8642 goto error;
8643 if (pat_len > wowlan->pattern_max_len ||
8644 pat_len < wowlan->pattern_min_len)
8645 goto error;
8646
8647 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8648 pkt_offset = 0;
8649 else
8650 pkt_offset = nla_get_u32(
8651 pat_tb[NL80211_PKTPAT_OFFSET]);
8652 if (pkt_offset > wowlan->max_pkt_offset)
8653 goto error;
8654 new_triggers.patterns[i].pkt_offset = pkt_offset;
8655
8656 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8657 if (!mask_pat) {
8658 err = -ENOMEM;
8659 goto error;
8660 }
8661 new_triggers.patterns[i].mask = mask_pat;
8662 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8663 mask_len);
8664 mask_pat += mask_len;
8665 new_triggers.patterns[i].pattern = mask_pat;
8666 new_triggers.patterns[i].pattern_len = pat_len;
8667 memcpy(mask_pat,
8668 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8669 pat_len);
8670 i++;
8671 }
8672 }
8673
8674 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8675 err = nl80211_parse_wowlan_tcp(
8676 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8677 &new_triggers);
8678 if (err)
8679 goto error;
8680 }
8681
8682 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8683 if (!ntrig) {
8684 err = -ENOMEM;
8685 goto error;
8686 }
8687 cfg80211_rdev_free_wowlan(rdev);
8688 rdev->wiphy.wowlan_config = ntrig;
8689
8690 set_wakeup:
8691 if (rdev->ops->set_wakeup &&
8692 prev_enabled != !!rdev->wiphy.wowlan_config)
8693 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8694
8695 return 0;
8696 error:
8697 for (i = 0; i < new_triggers.n_patterns; i++)
8698 kfree(new_triggers.patterns[i].mask);
8699 kfree(new_triggers.patterns);
8700 if (new_triggers.tcp && new_triggers.tcp->sock)
8701 sock_release(new_triggers.tcp->sock);
8702 kfree(new_triggers.tcp);
8703 return err;
8704 }
8705 #endif
8706
8707 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8708 struct cfg80211_registered_device *rdev)
8709 {
8710 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8711 int i, j, pat_len;
8712 struct cfg80211_coalesce_rules *rule;
8713
8714 if (!rdev->coalesce->n_rules)
8715 return 0;
8716
8717 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8718 if (!nl_rules)
8719 return -ENOBUFS;
8720
8721 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8722 nl_rule = nla_nest_start(msg, i + 1);
8723 if (!nl_rule)
8724 return -ENOBUFS;
8725
8726 rule = &rdev->coalesce->rules[i];
8727 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8728 rule->delay))
8729 return -ENOBUFS;
8730
8731 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8732 rule->condition))
8733 return -ENOBUFS;
8734
8735 nl_pats = nla_nest_start(msg,
8736 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8737 if (!nl_pats)
8738 return -ENOBUFS;
8739
8740 for (j = 0; j < rule->n_patterns; j++) {
8741 nl_pat = nla_nest_start(msg, j + 1);
8742 if (!nl_pat)
8743 return -ENOBUFS;
8744 pat_len = rule->patterns[j].pattern_len;
8745 if (nla_put(msg, NL80211_PKTPAT_MASK,
8746 DIV_ROUND_UP(pat_len, 8),
8747 rule->patterns[j].mask) ||
8748 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8749 rule->patterns[j].pattern) ||
8750 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8751 rule->patterns[j].pkt_offset))
8752 return -ENOBUFS;
8753 nla_nest_end(msg, nl_pat);
8754 }
8755 nla_nest_end(msg, nl_pats);
8756 nla_nest_end(msg, nl_rule);
8757 }
8758 nla_nest_end(msg, nl_rules);
8759
8760 return 0;
8761 }
8762
8763 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8764 {
8765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8766 struct sk_buff *msg;
8767 void *hdr;
8768
8769 if (!rdev->wiphy.coalesce)
8770 return -EOPNOTSUPP;
8771
8772 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8773 if (!msg)
8774 return -ENOMEM;
8775
8776 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8777 NL80211_CMD_GET_COALESCE);
8778 if (!hdr)
8779 goto nla_put_failure;
8780
8781 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8782 goto nla_put_failure;
8783
8784 genlmsg_end(msg, hdr);
8785 return genlmsg_reply(msg, info);
8786
8787 nla_put_failure:
8788 nlmsg_free(msg);
8789 return -ENOBUFS;
8790 }
8791
8792 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8793 {
8794 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8795 int i, j;
8796 struct cfg80211_coalesce_rules *rule;
8797
8798 if (!coalesce)
8799 return;
8800
8801 for (i = 0; i < coalesce->n_rules; i++) {
8802 rule = &coalesce->rules[i];
8803 for (j = 0; j < rule->n_patterns; j++)
8804 kfree(rule->patterns[j].mask);
8805 kfree(rule->patterns);
8806 }
8807 kfree(coalesce->rules);
8808 kfree(coalesce);
8809 rdev->coalesce = NULL;
8810 }
8811
8812 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8813 struct nlattr *rule,
8814 struct cfg80211_coalesce_rules *new_rule)
8815 {
8816 int err, i;
8817 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8818 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8819 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8820 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8821
8822 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8823 nla_len(rule), nl80211_coalesce_policy);
8824 if (err)
8825 return err;
8826
8827 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8828 new_rule->delay =
8829 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8830 if (new_rule->delay > coalesce->max_delay)
8831 return -EINVAL;
8832
8833 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8834 new_rule->condition =
8835 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8836 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8837 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8838 return -EINVAL;
8839
8840 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8841 return -EINVAL;
8842
8843 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8844 rem)
8845 n_patterns++;
8846 if (n_patterns > coalesce->n_patterns)
8847 return -EINVAL;
8848
8849 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8850 GFP_KERNEL);
8851 if (!new_rule->patterns)
8852 return -ENOMEM;
8853
8854 new_rule->n_patterns = n_patterns;
8855 i = 0;
8856
8857 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8858 rem) {
8859 u8 *mask_pat;
8860
8861 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8862 nla_len(pat), NULL);
8863 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8864 !pat_tb[NL80211_PKTPAT_PATTERN])
8865 return -EINVAL;
8866 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8867 mask_len = DIV_ROUND_UP(pat_len, 8);
8868 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8869 return -EINVAL;
8870 if (pat_len > coalesce->pattern_max_len ||
8871 pat_len < coalesce->pattern_min_len)
8872 return -EINVAL;
8873
8874 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8875 pkt_offset = 0;
8876 else
8877 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8878 if (pkt_offset > coalesce->max_pkt_offset)
8879 return -EINVAL;
8880 new_rule->patterns[i].pkt_offset = pkt_offset;
8881
8882 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8883 if (!mask_pat)
8884 return -ENOMEM;
8885
8886 new_rule->patterns[i].mask = mask_pat;
8887 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8888 mask_len);
8889
8890 mask_pat += mask_len;
8891 new_rule->patterns[i].pattern = mask_pat;
8892 new_rule->patterns[i].pattern_len = pat_len;
8893 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8894 pat_len);
8895 i++;
8896 }
8897
8898 return 0;
8899 }
8900
8901 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8902 {
8903 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8904 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8905 struct cfg80211_coalesce new_coalesce = {};
8906 struct cfg80211_coalesce *n_coalesce;
8907 int err, rem_rule, n_rules = 0, i, j;
8908 struct nlattr *rule;
8909 struct cfg80211_coalesce_rules *tmp_rule;
8910
8911 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8912 return -EOPNOTSUPP;
8913
8914 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8915 cfg80211_rdev_free_coalesce(rdev);
8916 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8917 return 0;
8918 }
8919
8920 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8921 rem_rule)
8922 n_rules++;
8923 if (n_rules > coalesce->n_rules)
8924 return -EINVAL;
8925
8926 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8927 GFP_KERNEL);
8928 if (!new_coalesce.rules)
8929 return -ENOMEM;
8930
8931 new_coalesce.n_rules = n_rules;
8932 i = 0;
8933
8934 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8935 rem_rule) {
8936 err = nl80211_parse_coalesce_rule(rdev, rule,
8937 &new_coalesce.rules[i]);
8938 if (err)
8939 goto error;
8940
8941 i++;
8942 }
8943
8944 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8945 if (err)
8946 goto error;
8947
8948 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8949 if (!n_coalesce) {
8950 err = -ENOMEM;
8951 goto error;
8952 }
8953 cfg80211_rdev_free_coalesce(rdev);
8954 rdev->coalesce = n_coalesce;
8955
8956 return 0;
8957 error:
8958 for (i = 0; i < new_coalesce.n_rules; i++) {
8959 tmp_rule = &new_coalesce.rules[i];
8960 for (j = 0; j < tmp_rule->n_patterns; j++)
8961 kfree(tmp_rule->patterns[j].mask);
8962 kfree(tmp_rule->patterns);
8963 }
8964 kfree(new_coalesce.rules);
8965
8966 return err;
8967 }
8968
8969 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8970 {
8971 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8972 struct net_device *dev = info->user_ptr[1];
8973 struct wireless_dev *wdev = dev->ieee80211_ptr;
8974 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8975 struct cfg80211_gtk_rekey_data rekey_data;
8976 int err;
8977
8978 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8979 return -EINVAL;
8980
8981 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8982 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8983 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8984 nl80211_rekey_policy);
8985 if (err)
8986 return err;
8987
8988 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8989 return -ERANGE;
8990 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8991 return -ERANGE;
8992 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8993 return -ERANGE;
8994
8995 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
8996 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
8997 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
8998
8999 wdev_lock(wdev);
9000 if (!wdev->current_bss) {
9001 err = -ENOTCONN;
9002 goto out;
9003 }
9004
9005 if (!rdev->ops->set_rekey_data) {
9006 err = -EOPNOTSUPP;
9007 goto out;
9008 }
9009
9010 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9011 out:
9012 wdev_unlock(wdev);
9013 return err;
9014 }
9015
9016 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9017 struct genl_info *info)
9018 {
9019 struct net_device *dev = info->user_ptr[1];
9020 struct wireless_dev *wdev = dev->ieee80211_ptr;
9021
9022 if (wdev->iftype != NL80211_IFTYPE_AP &&
9023 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9024 return -EINVAL;
9025
9026 if (wdev->ap_unexpected_nlportid)
9027 return -EBUSY;
9028
9029 wdev->ap_unexpected_nlportid = info->snd_portid;
9030 return 0;
9031 }
9032
9033 static int nl80211_probe_client(struct sk_buff *skb,
9034 struct genl_info *info)
9035 {
9036 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9037 struct net_device *dev = info->user_ptr[1];
9038 struct wireless_dev *wdev = dev->ieee80211_ptr;
9039 struct sk_buff *msg;
9040 void *hdr;
9041 const u8 *addr;
9042 u64 cookie;
9043 int err;
9044
9045 if (wdev->iftype != NL80211_IFTYPE_AP &&
9046 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9047 return -EOPNOTSUPP;
9048
9049 if (!info->attrs[NL80211_ATTR_MAC])
9050 return -EINVAL;
9051
9052 if (!rdev->ops->probe_client)
9053 return -EOPNOTSUPP;
9054
9055 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9056 if (!msg)
9057 return -ENOMEM;
9058
9059 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9060 NL80211_CMD_PROBE_CLIENT);
9061 if (!hdr) {
9062 err = -ENOBUFS;
9063 goto free_msg;
9064 }
9065
9066 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9067
9068 err = rdev_probe_client(rdev, dev, addr, &cookie);
9069 if (err)
9070 goto free_msg;
9071
9072 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9073 goto nla_put_failure;
9074
9075 genlmsg_end(msg, hdr);
9076
9077 return genlmsg_reply(msg, info);
9078
9079 nla_put_failure:
9080 err = -ENOBUFS;
9081 free_msg:
9082 nlmsg_free(msg);
9083 return err;
9084 }
9085
9086 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9087 {
9088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9089 struct cfg80211_beacon_registration *reg, *nreg;
9090 int rv;
9091
9092 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9093 return -EOPNOTSUPP;
9094
9095 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9096 if (!nreg)
9097 return -ENOMEM;
9098
9099 /* First, check if already registered. */
9100 spin_lock_bh(&rdev->beacon_registrations_lock);
9101 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9102 if (reg->nlportid == info->snd_portid) {
9103 rv = -EALREADY;
9104 goto out_err;
9105 }
9106 }
9107 /* Add it to the list */
9108 nreg->nlportid = info->snd_portid;
9109 list_add(&nreg->list, &rdev->beacon_registrations);
9110
9111 spin_unlock_bh(&rdev->beacon_registrations_lock);
9112
9113 return 0;
9114 out_err:
9115 spin_unlock_bh(&rdev->beacon_registrations_lock);
9116 kfree(nreg);
9117 return rv;
9118 }
9119
9120 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9121 {
9122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9123 struct wireless_dev *wdev = info->user_ptr[1];
9124 int err;
9125
9126 if (!rdev->ops->start_p2p_device)
9127 return -EOPNOTSUPP;
9128
9129 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9130 return -EOPNOTSUPP;
9131
9132 if (wdev->p2p_started)
9133 return 0;
9134
9135 if (rfkill_blocked(rdev->rfkill))
9136 return -ERFKILL;
9137
9138 err = rdev_start_p2p_device(rdev, wdev);
9139 if (err)
9140 return err;
9141
9142 wdev->p2p_started = true;
9143 rdev->opencount++;
9144
9145 return 0;
9146 }
9147
9148 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9149 {
9150 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9151 struct wireless_dev *wdev = info->user_ptr[1];
9152
9153 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9154 return -EOPNOTSUPP;
9155
9156 if (!rdev->ops->stop_p2p_device)
9157 return -EOPNOTSUPP;
9158
9159 cfg80211_stop_p2p_device(rdev, wdev);
9160
9161 return 0;
9162 }
9163
9164 static int nl80211_get_protocol_features(struct sk_buff *skb,
9165 struct genl_info *info)
9166 {
9167 void *hdr;
9168 struct sk_buff *msg;
9169
9170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9171 if (!msg)
9172 return -ENOMEM;
9173
9174 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9175 NL80211_CMD_GET_PROTOCOL_FEATURES);
9176 if (!hdr)
9177 goto nla_put_failure;
9178
9179 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9180 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9181 goto nla_put_failure;
9182
9183 genlmsg_end(msg, hdr);
9184 return genlmsg_reply(msg, info);
9185
9186 nla_put_failure:
9187 kfree_skb(msg);
9188 return -ENOBUFS;
9189 }
9190
9191 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9192 {
9193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9194 struct cfg80211_update_ft_ies_params ft_params;
9195 struct net_device *dev = info->user_ptr[1];
9196
9197 if (!rdev->ops->update_ft_ies)
9198 return -EOPNOTSUPP;
9199
9200 if (!info->attrs[NL80211_ATTR_MDID] ||
9201 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9202 return -EINVAL;
9203
9204 memset(&ft_params, 0, sizeof(ft_params));
9205 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9206 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9207 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9208
9209 return rdev_update_ft_ies(rdev, dev, &ft_params);
9210 }
9211
9212 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9213 struct genl_info *info)
9214 {
9215 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9216 struct wireless_dev *wdev = info->user_ptr[1];
9217 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9218 u16 duration;
9219 int ret;
9220
9221 if (!rdev->ops->crit_proto_start)
9222 return -EOPNOTSUPP;
9223
9224 if (WARN_ON(!rdev->ops->crit_proto_stop))
9225 return -EINVAL;
9226
9227 if (rdev->crit_proto_nlportid)
9228 return -EBUSY;
9229
9230 /* determine protocol if provided */
9231 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9232 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9233
9234 if (proto >= NUM_NL80211_CRIT_PROTO)
9235 return -EINVAL;
9236
9237 /* timeout must be provided */
9238 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9239 return -EINVAL;
9240
9241 duration =
9242 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9243
9244 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9245 return -ERANGE;
9246
9247 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9248 if (!ret)
9249 rdev->crit_proto_nlportid = info->snd_portid;
9250
9251 return ret;
9252 }
9253
9254 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9255 struct genl_info *info)
9256 {
9257 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9258 struct wireless_dev *wdev = info->user_ptr[1];
9259
9260 if (!rdev->ops->crit_proto_stop)
9261 return -EOPNOTSUPP;
9262
9263 if (rdev->crit_proto_nlportid) {
9264 rdev->crit_proto_nlportid = 0;
9265 rdev_crit_proto_stop(rdev, wdev);
9266 }
9267 return 0;
9268 }
9269
9270 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9271 {
9272 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9273 struct wireless_dev *wdev =
9274 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9275 int i, err;
9276 u32 vid, subcmd;
9277
9278 if (!rdev->wiphy.vendor_commands)
9279 return -EOPNOTSUPP;
9280
9281 if (IS_ERR(wdev)) {
9282 err = PTR_ERR(wdev);
9283 if (err != -EINVAL)
9284 return err;
9285 wdev = NULL;
9286 } else if (wdev->wiphy != &rdev->wiphy) {
9287 return -EINVAL;
9288 }
9289
9290 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9291 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9292 return -EINVAL;
9293
9294 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9295 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9296 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9297 const struct wiphy_vendor_command *vcmd;
9298 void *data = NULL;
9299 int len = 0;
9300
9301 vcmd = &rdev->wiphy.vendor_commands[i];
9302
9303 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9304 continue;
9305
9306 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9307 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9308 if (!wdev)
9309 return -EINVAL;
9310 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9311 !wdev->netdev)
9312 return -EINVAL;
9313
9314 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9315 if (wdev->netdev &&
9316 !netif_running(wdev->netdev))
9317 return -ENETDOWN;
9318 if (!wdev->netdev && !wdev->p2p_started)
9319 return -ENETDOWN;
9320 }
9321 } else {
9322 wdev = NULL;
9323 }
9324
9325 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9326 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9327 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9328 }
9329
9330 rdev->cur_cmd_info = info;
9331 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9332 data, len);
9333 rdev->cur_cmd_info = NULL;
9334 return err;
9335 }
9336
9337 return -EOPNOTSUPP;
9338 }
9339
9340 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9341 enum nl80211_commands cmd,
9342 enum nl80211_attrs attr,
9343 int approxlen)
9344 {
9345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9346
9347 if (WARN_ON(!rdev->cur_cmd_info))
9348 return NULL;
9349
9350 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9351 rdev->cur_cmd_info->snd_portid,
9352 rdev->cur_cmd_info->snd_seq,
9353 cmd, attr, NULL, GFP_KERNEL);
9354 }
9355 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9356
9357 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9358 {
9359 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9360 void *hdr = ((void **)skb->cb)[1];
9361 struct nlattr *data = ((void **)skb->cb)[2];
9362
9363 /* clear CB data for netlink core to own from now on */
9364 memset(skb->cb, 0, sizeof(skb->cb));
9365
9366 if (WARN_ON(!rdev->cur_cmd_info)) {
9367 kfree_skb(skb);
9368 return -EINVAL;
9369 }
9370
9371 nla_nest_end(skb, data);
9372 genlmsg_end(skb, hdr);
9373 return genlmsg_reply(skb, rdev->cur_cmd_info);
9374 }
9375 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9376
9377
9378 static int nl80211_set_qos_map(struct sk_buff *skb,
9379 struct genl_info *info)
9380 {
9381 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9382 struct cfg80211_qos_map *qos_map = NULL;
9383 struct net_device *dev = info->user_ptr[1];
9384 u8 *pos, len, num_des, des_len, des;
9385 int ret;
9386
9387 if (!rdev->ops->set_qos_map)
9388 return -EOPNOTSUPP;
9389
9390 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9391 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9392 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9393
9394 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9395 len > IEEE80211_QOS_MAP_LEN_MAX)
9396 return -EINVAL;
9397
9398 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9399 if (!qos_map)
9400 return -ENOMEM;
9401
9402 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9403 if (num_des) {
9404 des_len = num_des *
9405 sizeof(struct cfg80211_dscp_exception);
9406 memcpy(qos_map->dscp_exception, pos, des_len);
9407 qos_map->num_des = num_des;
9408 for (des = 0; des < num_des; des++) {
9409 if (qos_map->dscp_exception[des].up > 7) {
9410 kfree(qos_map);
9411 return -EINVAL;
9412 }
9413 }
9414 pos += des_len;
9415 }
9416 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9417 }
9418
9419 wdev_lock(dev->ieee80211_ptr);
9420 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9421 if (!ret)
9422 ret = rdev_set_qos_map(rdev, dev, qos_map);
9423 wdev_unlock(dev->ieee80211_ptr);
9424
9425 kfree(qos_map);
9426 return ret;
9427 }
9428
9429 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9430 {
9431 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9432 struct net_device *dev = info->user_ptr[1];
9433 struct wireless_dev *wdev = dev->ieee80211_ptr;
9434 const u8 *peer;
9435 u8 tsid, up;
9436 u16 admitted_time = 0;
9437 int err;
9438
9439 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
9440 return -EOPNOTSUPP;
9441
9442 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9443 !info->attrs[NL80211_ATTR_USER_PRIO])
9444 return -EINVAL;
9445
9446 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9447 if (tsid >= IEEE80211_NUM_TIDS)
9448 return -EINVAL;
9449
9450 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9451 if (up >= IEEE80211_NUM_UPS)
9452 return -EINVAL;
9453
9454 /* WMM uses TIDs 0-7 even for TSPEC */
9455 if (tsid < IEEE80211_FIRST_TSPEC_TSID) {
9456 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_WMM_ADMISSION))
9457 return -EINVAL;
9458 } else {
9459 /* TODO: handle 802.11 TSPEC/admission control
9460 * need more attributes for that (e.g. BA session requirement)
9461 */
9462 return -EINVAL;
9463 }
9464
9465 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9466
9467 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9468 admitted_time =
9469 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9470 if (!admitted_time)
9471 return -EINVAL;
9472 }
9473
9474 wdev_lock(wdev);
9475 switch (wdev->iftype) {
9476 case NL80211_IFTYPE_STATION:
9477 case NL80211_IFTYPE_P2P_CLIENT:
9478 if (wdev->current_bss)
9479 break;
9480 err = -ENOTCONN;
9481 goto out;
9482 default:
9483 err = -EOPNOTSUPP;
9484 goto out;
9485 }
9486
9487 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9488
9489 out:
9490 wdev_unlock(wdev);
9491 return err;
9492 }
9493
9494 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9495 {
9496 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9497 struct net_device *dev = info->user_ptr[1];
9498 struct wireless_dev *wdev = dev->ieee80211_ptr;
9499 const u8 *peer;
9500 u8 tsid;
9501 int err;
9502
9503 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9504 return -EINVAL;
9505
9506 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9507 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9508
9509 wdev_lock(wdev);
9510 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9511 wdev_unlock(wdev);
9512
9513 return err;
9514 }
9515
9516 #define NL80211_FLAG_NEED_WIPHY 0x01
9517 #define NL80211_FLAG_NEED_NETDEV 0x02
9518 #define NL80211_FLAG_NEED_RTNL 0x04
9519 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9520 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9521 NL80211_FLAG_CHECK_NETDEV_UP)
9522 #define NL80211_FLAG_NEED_WDEV 0x10
9523 /* If a netdev is associated, it must be UP, P2P must be started */
9524 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9525 NL80211_FLAG_CHECK_NETDEV_UP)
9526 #define NL80211_FLAG_CLEAR_SKB 0x20
9527
9528 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9529 struct genl_info *info)
9530 {
9531 struct cfg80211_registered_device *rdev;
9532 struct wireless_dev *wdev;
9533 struct net_device *dev;
9534 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9535
9536 if (rtnl)
9537 rtnl_lock();
9538
9539 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9540 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9541 if (IS_ERR(rdev)) {
9542 if (rtnl)
9543 rtnl_unlock();
9544 return PTR_ERR(rdev);
9545 }
9546 info->user_ptr[0] = rdev;
9547 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9548 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9549 ASSERT_RTNL();
9550
9551 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9552 info->attrs);
9553 if (IS_ERR(wdev)) {
9554 if (rtnl)
9555 rtnl_unlock();
9556 return PTR_ERR(wdev);
9557 }
9558
9559 dev = wdev->netdev;
9560 rdev = wiphy_to_rdev(wdev->wiphy);
9561
9562 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9563 if (!dev) {
9564 if (rtnl)
9565 rtnl_unlock();
9566 return -EINVAL;
9567 }
9568
9569 info->user_ptr[1] = dev;
9570 } else {
9571 info->user_ptr[1] = wdev;
9572 }
9573
9574 if (dev) {
9575 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9576 !netif_running(dev)) {
9577 if (rtnl)
9578 rtnl_unlock();
9579 return -ENETDOWN;
9580 }
9581
9582 dev_hold(dev);
9583 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9584 if (!wdev->p2p_started) {
9585 if (rtnl)
9586 rtnl_unlock();
9587 return -ENETDOWN;
9588 }
9589 }
9590
9591 info->user_ptr[0] = rdev;
9592 }
9593
9594 return 0;
9595 }
9596
9597 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9598 struct genl_info *info)
9599 {
9600 if (info->user_ptr[1]) {
9601 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9602 struct wireless_dev *wdev = info->user_ptr[1];
9603
9604 if (wdev->netdev)
9605 dev_put(wdev->netdev);
9606 } else {
9607 dev_put(info->user_ptr[1]);
9608 }
9609 }
9610
9611 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9612 rtnl_unlock();
9613
9614 /* If needed, clear the netlink message payload from the SKB
9615 * as it might contain key data that shouldn't stick around on
9616 * the heap after the SKB is freed. The netlink message header
9617 * is still needed for further processing, so leave it intact.
9618 */
9619 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9620 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9621
9622 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9623 }
9624 }
9625
9626 static const struct genl_ops nl80211_ops[] = {
9627 {
9628 .cmd = NL80211_CMD_GET_WIPHY,
9629 .doit = nl80211_get_wiphy,
9630 .dumpit = nl80211_dump_wiphy,
9631 .done = nl80211_dump_wiphy_done,
9632 .policy = nl80211_policy,
9633 /* can be retrieved by unprivileged users */
9634 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9635 NL80211_FLAG_NEED_RTNL,
9636 },
9637 {
9638 .cmd = NL80211_CMD_SET_WIPHY,
9639 .doit = nl80211_set_wiphy,
9640 .policy = nl80211_policy,
9641 .flags = GENL_ADMIN_PERM,
9642 .internal_flags = NL80211_FLAG_NEED_RTNL,
9643 },
9644 {
9645 .cmd = NL80211_CMD_GET_INTERFACE,
9646 .doit = nl80211_get_interface,
9647 .dumpit = nl80211_dump_interface,
9648 .policy = nl80211_policy,
9649 /* can be retrieved by unprivileged users */
9650 .internal_flags = NL80211_FLAG_NEED_WDEV |
9651 NL80211_FLAG_NEED_RTNL,
9652 },
9653 {
9654 .cmd = NL80211_CMD_SET_INTERFACE,
9655 .doit = nl80211_set_interface,
9656 .policy = nl80211_policy,
9657 .flags = GENL_ADMIN_PERM,
9658 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9659 NL80211_FLAG_NEED_RTNL,
9660 },
9661 {
9662 .cmd = NL80211_CMD_NEW_INTERFACE,
9663 .doit = nl80211_new_interface,
9664 .policy = nl80211_policy,
9665 .flags = GENL_ADMIN_PERM,
9666 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9667 NL80211_FLAG_NEED_RTNL,
9668 },
9669 {
9670 .cmd = NL80211_CMD_DEL_INTERFACE,
9671 .doit = nl80211_del_interface,
9672 .policy = nl80211_policy,
9673 .flags = GENL_ADMIN_PERM,
9674 .internal_flags = NL80211_FLAG_NEED_WDEV |
9675 NL80211_FLAG_NEED_RTNL,
9676 },
9677 {
9678 .cmd = NL80211_CMD_GET_KEY,
9679 .doit = nl80211_get_key,
9680 .policy = nl80211_policy,
9681 .flags = GENL_ADMIN_PERM,
9682 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9683 NL80211_FLAG_NEED_RTNL,
9684 },
9685 {
9686 .cmd = NL80211_CMD_SET_KEY,
9687 .doit = nl80211_set_key,
9688 .policy = nl80211_policy,
9689 .flags = GENL_ADMIN_PERM,
9690 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9691 NL80211_FLAG_NEED_RTNL |
9692 NL80211_FLAG_CLEAR_SKB,
9693 },
9694 {
9695 .cmd = NL80211_CMD_NEW_KEY,
9696 .doit = nl80211_new_key,
9697 .policy = nl80211_policy,
9698 .flags = GENL_ADMIN_PERM,
9699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9700 NL80211_FLAG_NEED_RTNL |
9701 NL80211_FLAG_CLEAR_SKB,
9702 },
9703 {
9704 .cmd = NL80211_CMD_DEL_KEY,
9705 .doit = nl80211_del_key,
9706 .policy = nl80211_policy,
9707 .flags = GENL_ADMIN_PERM,
9708 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9709 NL80211_FLAG_NEED_RTNL,
9710 },
9711 {
9712 .cmd = NL80211_CMD_SET_BEACON,
9713 .policy = nl80211_policy,
9714 .flags = GENL_ADMIN_PERM,
9715 .doit = nl80211_set_beacon,
9716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9717 NL80211_FLAG_NEED_RTNL,
9718 },
9719 {
9720 .cmd = NL80211_CMD_START_AP,
9721 .policy = nl80211_policy,
9722 .flags = GENL_ADMIN_PERM,
9723 .doit = nl80211_start_ap,
9724 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9725 NL80211_FLAG_NEED_RTNL,
9726 },
9727 {
9728 .cmd = NL80211_CMD_STOP_AP,
9729 .policy = nl80211_policy,
9730 .flags = GENL_ADMIN_PERM,
9731 .doit = nl80211_stop_ap,
9732 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9733 NL80211_FLAG_NEED_RTNL,
9734 },
9735 {
9736 .cmd = NL80211_CMD_GET_STATION,
9737 .doit = nl80211_get_station,
9738 .dumpit = nl80211_dump_station,
9739 .policy = nl80211_policy,
9740 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9741 NL80211_FLAG_NEED_RTNL,
9742 },
9743 {
9744 .cmd = NL80211_CMD_SET_STATION,
9745 .doit = nl80211_set_station,
9746 .policy = nl80211_policy,
9747 .flags = GENL_ADMIN_PERM,
9748 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9749 NL80211_FLAG_NEED_RTNL,
9750 },
9751 {
9752 .cmd = NL80211_CMD_NEW_STATION,
9753 .doit = nl80211_new_station,
9754 .policy = nl80211_policy,
9755 .flags = GENL_ADMIN_PERM,
9756 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9757 NL80211_FLAG_NEED_RTNL,
9758 },
9759 {
9760 .cmd = NL80211_CMD_DEL_STATION,
9761 .doit = nl80211_del_station,
9762 .policy = nl80211_policy,
9763 .flags = GENL_ADMIN_PERM,
9764 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9765 NL80211_FLAG_NEED_RTNL,
9766 },
9767 {
9768 .cmd = NL80211_CMD_GET_MPATH,
9769 .doit = nl80211_get_mpath,
9770 .dumpit = nl80211_dump_mpath,
9771 .policy = nl80211_policy,
9772 .flags = GENL_ADMIN_PERM,
9773 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9774 NL80211_FLAG_NEED_RTNL,
9775 },
9776 {
9777 .cmd = NL80211_CMD_SET_MPATH,
9778 .doit = nl80211_set_mpath,
9779 .policy = nl80211_policy,
9780 .flags = GENL_ADMIN_PERM,
9781 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9782 NL80211_FLAG_NEED_RTNL,
9783 },
9784 {
9785 .cmd = NL80211_CMD_NEW_MPATH,
9786 .doit = nl80211_new_mpath,
9787 .policy = nl80211_policy,
9788 .flags = GENL_ADMIN_PERM,
9789 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9790 NL80211_FLAG_NEED_RTNL,
9791 },
9792 {
9793 .cmd = NL80211_CMD_DEL_MPATH,
9794 .doit = nl80211_del_mpath,
9795 .policy = nl80211_policy,
9796 .flags = GENL_ADMIN_PERM,
9797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9798 NL80211_FLAG_NEED_RTNL,
9799 },
9800 {
9801 .cmd = NL80211_CMD_SET_BSS,
9802 .doit = nl80211_set_bss,
9803 .policy = nl80211_policy,
9804 .flags = GENL_ADMIN_PERM,
9805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9806 NL80211_FLAG_NEED_RTNL,
9807 },
9808 {
9809 .cmd = NL80211_CMD_GET_REG,
9810 .doit = nl80211_get_reg,
9811 .policy = nl80211_policy,
9812 .internal_flags = NL80211_FLAG_NEED_RTNL,
9813 /* can be retrieved by unprivileged users */
9814 },
9815 {
9816 .cmd = NL80211_CMD_SET_REG,
9817 .doit = nl80211_set_reg,
9818 .policy = nl80211_policy,
9819 .flags = GENL_ADMIN_PERM,
9820 .internal_flags = NL80211_FLAG_NEED_RTNL,
9821 },
9822 {
9823 .cmd = NL80211_CMD_REQ_SET_REG,
9824 .doit = nl80211_req_set_reg,
9825 .policy = nl80211_policy,
9826 .flags = GENL_ADMIN_PERM,
9827 },
9828 {
9829 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9830 .doit = nl80211_get_mesh_config,
9831 .policy = nl80211_policy,
9832 /* can be retrieved by unprivileged users */
9833 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9834 NL80211_FLAG_NEED_RTNL,
9835 },
9836 {
9837 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9838 .doit = nl80211_update_mesh_config,
9839 .policy = nl80211_policy,
9840 .flags = GENL_ADMIN_PERM,
9841 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9842 NL80211_FLAG_NEED_RTNL,
9843 },
9844 {
9845 .cmd = NL80211_CMD_TRIGGER_SCAN,
9846 .doit = nl80211_trigger_scan,
9847 .policy = nl80211_policy,
9848 .flags = GENL_ADMIN_PERM,
9849 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9850 NL80211_FLAG_NEED_RTNL,
9851 },
9852 {
9853 .cmd = NL80211_CMD_GET_SCAN,
9854 .policy = nl80211_policy,
9855 .dumpit = nl80211_dump_scan,
9856 },
9857 {
9858 .cmd = NL80211_CMD_START_SCHED_SCAN,
9859 .doit = nl80211_start_sched_scan,
9860 .policy = nl80211_policy,
9861 .flags = GENL_ADMIN_PERM,
9862 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9863 NL80211_FLAG_NEED_RTNL,
9864 },
9865 {
9866 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9867 .doit = nl80211_stop_sched_scan,
9868 .policy = nl80211_policy,
9869 .flags = GENL_ADMIN_PERM,
9870 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9871 NL80211_FLAG_NEED_RTNL,
9872 },
9873 {
9874 .cmd = NL80211_CMD_AUTHENTICATE,
9875 .doit = nl80211_authenticate,
9876 .policy = nl80211_policy,
9877 .flags = GENL_ADMIN_PERM,
9878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9879 NL80211_FLAG_NEED_RTNL |
9880 NL80211_FLAG_CLEAR_SKB,
9881 },
9882 {
9883 .cmd = NL80211_CMD_ASSOCIATE,
9884 .doit = nl80211_associate,
9885 .policy = nl80211_policy,
9886 .flags = GENL_ADMIN_PERM,
9887 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9888 NL80211_FLAG_NEED_RTNL,
9889 },
9890 {
9891 .cmd = NL80211_CMD_DEAUTHENTICATE,
9892 .doit = nl80211_deauthenticate,
9893 .policy = nl80211_policy,
9894 .flags = GENL_ADMIN_PERM,
9895 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9896 NL80211_FLAG_NEED_RTNL,
9897 },
9898 {
9899 .cmd = NL80211_CMD_DISASSOCIATE,
9900 .doit = nl80211_disassociate,
9901 .policy = nl80211_policy,
9902 .flags = GENL_ADMIN_PERM,
9903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9904 NL80211_FLAG_NEED_RTNL,
9905 },
9906 {
9907 .cmd = NL80211_CMD_JOIN_IBSS,
9908 .doit = nl80211_join_ibss,
9909 .policy = nl80211_policy,
9910 .flags = GENL_ADMIN_PERM,
9911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9912 NL80211_FLAG_NEED_RTNL,
9913 },
9914 {
9915 .cmd = NL80211_CMD_LEAVE_IBSS,
9916 .doit = nl80211_leave_ibss,
9917 .policy = nl80211_policy,
9918 .flags = GENL_ADMIN_PERM,
9919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9920 NL80211_FLAG_NEED_RTNL,
9921 },
9922 #ifdef CONFIG_NL80211_TESTMODE
9923 {
9924 .cmd = NL80211_CMD_TESTMODE,
9925 .doit = nl80211_testmode_do,
9926 .dumpit = nl80211_testmode_dump,
9927 .policy = nl80211_policy,
9928 .flags = GENL_ADMIN_PERM,
9929 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9930 NL80211_FLAG_NEED_RTNL,
9931 },
9932 #endif
9933 {
9934 .cmd = NL80211_CMD_CONNECT,
9935 .doit = nl80211_connect,
9936 .policy = nl80211_policy,
9937 .flags = GENL_ADMIN_PERM,
9938 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9939 NL80211_FLAG_NEED_RTNL,
9940 },
9941 {
9942 .cmd = NL80211_CMD_DISCONNECT,
9943 .doit = nl80211_disconnect,
9944 .policy = nl80211_policy,
9945 .flags = GENL_ADMIN_PERM,
9946 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9947 NL80211_FLAG_NEED_RTNL,
9948 },
9949 {
9950 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9951 .doit = nl80211_wiphy_netns,
9952 .policy = nl80211_policy,
9953 .flags = GENL_ADMIN_PERM,
9954 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9955 NL80211_FLAG_NEED_RTNL,
9956 },
9957 {
9958 .cmd = NL80211_CMD_GET_SURVEY,
9959 .policy = nl80211_policy,
9960 .dumpit = nl80211_dump_survey,
9961 },
9962 {
9963 .cmd = NL80211_CMD_SET_PMKSA,
9964 .doit = nl80211_setdel_pmksa,
9965 .policy = nl80211_policy,
9966 .flags = GENL_ADMIN_PERM,
9967 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9968 NL80211_FLAG_NEED_RTNL,
9969 },
9970 {
9971 .cmd = NL80211_CMD_DEL_PMKSA,
9972 .doit = nl80211_setdel_pmksa,
9973 .policy = nl80211_policy,
9974 .flags = GENL_ADMIN_PERM,
9975 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9976 NL80211_FLAG_NEED_RTNL,
9977 },
9978 {
9979 .cmd = NL80211_CMD_FLUSH_PMKSA,
9980 .doit = nl80211_flush_pmksa,
9981 .policy = nl80211_policy,
9982 .flags = GENL_ADMIN_PERM,
9983 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9984 NL80211_FLAG_NEED_RTNL,
9985 },
9986 {
9987 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9988 .doit = nl80211_remain_on_channel,
9989 .policy = nl80211_policy,
9990 .flags = GENL_ADMIN_PERM,
9991 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9992 NL80211_FLAG_NEED_RTNL,
9993 },
9994 {
9995 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9996 .doit = nl80211_cancel_remain_on_channel,
9997 .policy = nl80211_policy,
9998 .flags = GENL_ADMIN_PERM,
9999 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10000 NL80211_FLAG_NEED_RTNL,
10001 },
10002 {
10003 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10004 .doit = nl80211_set_tx_bitrate_mask,
10005 .policy = nl80211_policy,
10006 .flags = GENL_ADMIN_PERM,
10007 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10008 NL80211_FLAG_NEED_RTNL,
10009 },
10010 {
10011 .cmd = NL80211_CMD_REGISTER_FRAME,
10012 .doit = nl80211_register_mgmt,
10013 .policy = nl80211_policy,
10014 .flags = GENL_ADMIN_PERM,
10015 .internal_flags = NL80211_FLAG_NEED_WDEV |
10016 NL80211_FLAG_NEED_RTNL,
10017 },
10018 {
10019 .cmd = NL80211_CMD_FRAME,
10020 .doit = nl80211_tx_mgmt,
10021 .policy = nl80211_policy,
10022 .flags = GENL_ADMIN_PERM,
10023 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10024 NL80211_FLAG_NEED_RTNL,
10025 },
10026 {
10027 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10028 .doit = nl80211_tx_mgmt_cancel_wait,
10029 .policy = nl80211_policy,
10030 .flags = GENL_ADMIN_PERM,
10031 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10032 NL80211_FLAG_NEED_RTNL,
10033 },
10034 {
10035 .cmd = NL80211_CMD_SET_POWER_SAVE,
10036 .doit = nl80211_set_power_save,
10037 .policy = nl80211_policy,
10038 .flags = GENL_ADMIN_PERM,
10039 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10040 NL80211_FLAG_NEED_RTNL,
10041 },
10042 {
10043 .cmd = NL80211_CMD_GET_POWER_SAVE,
10044 .doit = nl80211_get_power_save,
10045 .policy = nl80211_policy,
10046 /* can be retrieved by unprivileged users */
10047 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10048 NL80211_FLAG_NEED_RTNL,
10049 },
10050 {
10051 .cmd = NL80211_CMD_SET_CQM,
10052 .doit = nl80211_set_cqm,
10053 .policy = nl80211_policy,
10054 .flags = GENL_ADMIN_PERM,
10055 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10056 NL80211_FLAG_NEED_RTNL,
10057 },
10058 {
10059 .cmd = NL80211_CMD_SET_CHANNEL,
10060 .doit = nl80211_set_channel,
10061 .policy = nl80211_policy,
10062 .flags = GENL_ADMIN_PERM,
10063 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10064 NL80211_FLAG_NEED_RTNL,
10065 },
10066 {
10067 .cmd = NL80211_CMD_SET_WDS_PEER,
10068 .doit = nl80211_set_wds_peer,
10069 .policy = nl80211_policy,
10070 .flags = GENL_ADMIN_PERM,
10071 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10072 NL80211_FLAG_NEED_RTNL,
10073 },
10074 {
10075 .cmd = NL80211_CMD_JOIN_MESH,
10076 .doit = nl80211_join_mesh,
10077 .policy = nl80211_policy,
10078 .flags = GENL_ADMIN_PERM,
10079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10080 NL80211_FLAG_NEED_RTNL,
10081 },
10082 {
10083 .cmd = NL80211_CMD_LEAVE_MESH,
10084 .doit = nl80211_leave_mesh,
10085 .policy = nl80211_policy,
10086 .flags = GENL_ADMIN_PERM,
10087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10088 NL80211_FLAG_NEED_RTNL,
10089 },
10090 #ifdef CONFIG_PM
10091 {
10092 .cmd = NL80211_CMD_GET_WOWLAN,
10093 .doit = nl80211_get_wowlan,
10094 .policy = nl80211_policy,
10095 /* can be retrieved by unprivileged users */
10096 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10097 NL80211_FLAG_NEED_RTNL,
10098 },
10099 {
10100 .cmd = NL80211_CMD_SET_WOWLAN,
10101 .doit = nl80211_set_wowlan,
10102 .policy = nl80211_policy,
10103 .flags = GENL_ADMIN_PERM,
10104 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10105 NL80211_FLAG_NEED_RTNL,
10106 },
10107 #endif
10108 {
10109 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10110 .doit = nl80211_set_rekey_data,
10111 .policy = nl80211_policy,
10112 .flags = GENL_ADMIN_PERM,
10113 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10114 NL80211_FLAG_NEED_RTNL |
10115 NL80211_FLAG_CLEAR_SKB,
10116 },
10117 {
10118 .cmd = NL80211_CMD_TDLS_MGMT,
10119 .doit = nl80211_tdls_mgmt,
10120 .policy = nl80211_policy,
10121 .flags = GENL_ADMIN_PERM,
10122 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10123 NL80211_FLAG_NEED_RTNL,
10124 },
10125 {
10126 .cmd = NL80211_CMD_TDLS_OPER,
10127 .doit = nl80211_tdls_oper,
10128 .policy = nl80211_policy,
10129 .flags = GENL_ADMIN_PERM,
10130 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10131 NL80211_FLAG_NEED_RTNL,
10132 },
10133 {
10134 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10135 .doit = nl80211_register_unexpected_frame,
10136 .policy = nl80211_policy,
10137 .flags = GENL_ADMIN_PERM,
10138 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10139 NL80211_FLAG_NEED_RTNL,
10140 },
10141 {
10142 .cmd = NL80211_CMD_PROBE_CLIENT,
10143 .doit = nl80211_probe_client,
10144 .policy = nl80211_policy,
10145 .flags = GENL_ADMIN_PERM,
10146 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10147 NL80211_FLAG_NEED_RTNL,
10148 },
10149 {
10150 .cmd = NL80211_CMD_REGISTER_BEACONS,
10151 .doit = nl80211_register_beacons,
10152 .policy = nl80211_policy,
10153 .flags = GENL_ADMIN_PERM,
10154 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10155 NL80211_FLAG_NEED_RTNL,
10156 },
10157 {
10158 .cmd = NL80211_CMD_SET_NOACK_MAP,
10159 .doit = nl80211_set_noack_map,
10160 .policy = nl80211_policy,
10161 .flags = GENL_ADMIN_PERM,
10162 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10163 NL80211_FLAG_NEED_RTNL,
10164 },
10165 {
10166 .cmd = NL80211_CMD_START_P2P_DEVICE,
10167 .doit = nl80211_start_p2p_device,
10168 .policy = nl80211_policy,
10169 .flags = GENL_ADMIN_PERM,
10170 .internal_flags = NL80211_FLAG_NEED_WDEV |
10171 NL80211_FLAG_NEED_RTNL,
10172 },
10173 {
10174 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10175 .doit = nl80211_stop_p2p_device,
10176 .policy = nl80211_policy,
10177 .flags = GENL_ADMIN_PERM,
10178 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10179 NL80211_FLAG_NEED_RTNL,
10180 },
10181 {
10182 .cmd = NL80211_CMD_SET_MCAST_RATE,
10183 .doit = nl80211_set_mcast_rate,
10184 .policy = nl80211_policy,
10185 .flags = GENL_ADMIN_PERM,
10186 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10187 NL80211_FLAG_NEED_RTNL,
10188 },
10189 {
10190 .cmd = NL80211_CMD_SET_MAC_ACL,
10191 .doit = nl80211_set_mac_acl,
10192 .policy = nl80211_policy,
10193 .flags = GENL_ADMIN_PERM,
10194 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10195 NL80211_FLAG_NEED_RTNL,
10196 },
10197 {
10198 .cmd = NL80211_CMD_RADAR_DETECT,
10199 .doit = nl80211_start_radar_detection,
10200 .policy = nl80211_policy,
10201 .flags = GENL_ADMIN_PERM,
10202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10203 NL80211_FLAG_NEED_RTNL,
10204 },
10205 {
10206 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10207 .doit = nl80211_get_protocol_features,
10208 .policy = nl80211_policy,
10209 },
10210 {
10211 .cmd = NL80211_CMD_UPDATE_FT_IES,
10212 .doit = nl80211_update_ft_ies,
10213 .policy = nl80211_policy,
10214 .flags = GENL_ADMIN_PERM,
10215 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10216 NL80211_FLAG_NEED_RTNL,
10217 },
10218 {
10219 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10220 .doit = nl80211_crit_protocol_start,
10221 .policy = nl80211_policy,
10222 .flags = GENL_ADMIN_PERM,
10223 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10224 NL80211_FLAG_NEED_RTNL,
10225 },
10226 {
10227 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10228 .doit = nl80211_crit_protocol_stop,
10229 .policy = nl80211_policy,
10230 .flags = GENL_ADMIN_PERM,
10231 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10232 NL80211_FLAG_NEED_RTNL,
10233 },
10234 {
10235 .cmd = NL80211_CMD_GET_COALESCE,
10236 .doit = nl80211_get_coalesce,
10237 .policy = nl80211_policy,
10238 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10239 NL80211_FLAG_NEED_RTNL,
10240 },
10241 {
10242 .cmd = NL80211_CMD_SET_COALESCE,
10243 .doit = nl80211_set_coalesce,
10244 .policy = nl80211_policy,
10245 .flags = GENL_ADMIN_PERM,
10246 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10247 NL80211_FLAG_NEED_RTNL,
10248 },
10249 {
10250 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10251 .doit = nl80211_channel_switch,
10252 .policy = nl80211_policy,
10253 .flags = GENL_ADMIN_PERM,
10254 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10255 NL80211_FLAG_NEED_RTNL,
10256 },
10257 {
10258 .cmd = NL80211_CMD_VENDOR,
10259 .doit = nl80211_vendor_cmd,
10260 .policy = nl80211_policy,
10261 .flags = GENL_ADMIN_PERM,
10262 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10263 NL80211_FLAG_NEED_RTNL,
10264 },
10265 {
10266 .cmd = NL80211_CMD_SET_QOS_MAP,
10267 .doit = nl80211_set_qos_map,
10268 .policy = nl80211_policy,
10269 .flags = GENL_ADMIN_PERM,
10270 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10271 NL80211_FLAG_NEED_RTNL,
10272 },
10273 {
10274 .cmd = NL80211_CMD_ADD_TX_TS,
10275 .doit = nl80211_add_tx_ts,
10276 .policy = nl80211_policy,
10277 .flags = GENL_ADMIN_PERM,
10278 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10279 NL80211_FLAG_NEED_RTNL,
10280 },
10281 {
10282 .cmd = NL80211_CMD_DEL_TX_TS,
10283 .doit = nl80211_del_tx_ts,
10284 .policy = nl80211_policy,
10285 .flags = GENL_ADMIN_PERM,
10286 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10287 NL80211_FLAG_NEED_RTNL,
10288 },
10289 };
10290
10291 /* notification functions */
10292
10293 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10294 enum nl80211_commands cmd)
10295 {
10296 struct sk_buff *msg;
10297 struct nl80211_dump_wiphy_state state = {};
10298
10299 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10300 cmd != NL80211_CMD_DEL_WIPHY);
10301
10302 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10303 if (!msg)
10304 return;
10305
10306 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10307 nlmsg_free(msg);
10308 return;
10309 }
10310
10311 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10312 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10313 }
10314
10315 static int nl80211_add_scan_req(struct sk_buff *msg,
10316 struct cfg80211_registered_device *rdev)
10317 {
10318 struct cfg80211_scan_request *req = rdev->scan_req;
10319 struct nlattr *nest;
10320 int i;
10321
10322 if (WARN_ON(!req))
10323 return 0;
10324
10325 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10326 if (!nest)
10327 goto nla_put_failure;
10328 for (i = 0; i < req->n_ssids; i++) {
10329 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10330 goto nla_put_failure;
10331 }
10332 nla_nest_end(msg, nest);
10333
10334 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10335 if (!nest)
10336 goto nla_put_failure;
10337 for (i = 0; i < req->n_channels; i++) {
10338 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10339 goto nla_put_failure;
10340 }
10341 nla_nest_end(msg, nest);
10342
10343 if (req->ie &&
10344 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10345 goto nla_put_failure;
10346
10347 if (req->flags &&
10348 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10349 goto nla_put_failure;
10350
10351 return 0;
10352 nla_put_failure:
10353 return -ENOBUFS;
10354 }
10355
10356 static int nl80211_send_scan_msg(struct sk_buff *msg,
10357 struct cfg80211_registered_device *rdev,
10358 struct wireless_dev *wdev,
10359 u32 portid, u32 seq, int flags,
10360 u32 cmd)
10361 {
10362 void *hdr;
10363
10364 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10365 if (!hdr)
10366 return -1;
10367
10368 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10369 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10370 wdev->netdev->ifindex)) ||
10371 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10372 goto nla_put_failure;
10373
10374 /* ignore errors and send incomplete event anyway */
10375 nl80211_add_scan_req(msg, rdev);
10376
10377 return genlmsg_end(msg, hdr);
10378
10379 nla_put_failure:
10380 genlmsg_cancel(msg, hdr);
10381 return -EMSGSIZE;
10382 }
10383
10384 static int
10385 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10386 struct cfg80211_registered_device *rdev,
10387 struct net_device *netdev,
10388 u32 portid, u32 seq, int flags, u32 cmd)
10389 {
10390 void *hdr;
10391
10392 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10393 if (!hdr)
10394 return -1;
10395
10396 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10397 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10398 goto nla_put_failure;
10399
10400 return genlmsg_end(msg, hdr);
10401
10402 nla_put_failure:
10403 genlmsg_cancel(msg, hdr);
10404 return -EMSGSIZE;
10405 }
10406
10407 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10408 struct wireless_dev *wdev)
10409 {
10410 struct sk_buff *msg;
10411
10412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10413 if (!msg)
10414 return;
10415
10416 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10417 NL80211_CMD_TRIGGER_SCAN) < 0) {
10418 nlmsg_free(msg);
10419 return;
10420 }
10421
10422 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10423 NL80211_MCGRP_SCAN, GFP_KERNEL);
10424 }
10425
10426 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10427 struct wireless_dev *wdev, bool aborted)
10428 {
10429 struct sk_buff *msg;
10430
10431 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10432 if (!msg)
10433 return NULL;
10434
10435 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10436 aborted ? NL80211_CMD_SCAN_ABORTED :
10437 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10438 nlmsg_free(msg);
10439 return NULL;
10440 }
10441
10442 return msg;
10443 }
10444
10445 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10446 struct sk_buff *msg)
10447 {
10448 if (!msg)
10449 return;
10450
10451 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10452 NL80211_MCGRP_SCAN, GFP_KERNEL);
10453 }
10454
10455 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10456 struct net_device *netdev)
10457 {
10458 struct sk_buff *msg;
10459
10460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10461 if (!msg)
10462 return;
10463
10464 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10465 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10466 nlmsg_free(msg);
10467 return;
10468 }
10469
10470 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10471 NL80211_MCGRP_SCAN, GFP_KERNEL);
10472 }
10473
10474 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10475 struct net_device *netdev, u32 cmd)
10476 {
10477 struct sk_buff *msg;
10478
10479 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10480 if (!msg)
10481 return;
10482
10483 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10484 nlmsg_free(msg);
10485 return;
10486 }
10487
10488 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10489 NL80211_MCGRP_SCAN, GFP_KERNEL);
10490 }
10491
10492 /*
10493 * This can happen on global regulatory changes or device specific settings
10494 * based on custom world regulatory domains.
10495 */
10496 void nl80211_send_reg_change_event(struct regulatory_request *request)
10497 {
10498 struct sk_buff *msg;
10499 void *hdr;
10500
10501 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10502 if (!msg)
10503 return;
10504
10505 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10506 if (!hdr) {
10507 nlmsg_free(msg);
10508 return;
10509 }
10510
10511 /* Userspace can always count this one always being set */
10512 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10513 goto nla_put_failure;
10514
10515 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10516 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10517 NL80211_REGDOM_TYPE_WORLD))
10518 goto nla_put_failure;
10519 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10520 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10521 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10522 goto nla_put_failure;
10523 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10524 request->intersect) {
10525 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10526 NL80211_REGDOM_TYPE_INTERSECTION))
10527 goto nla_put_failure;
10528 } else {
10529 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10530 NL80211_REGDOM_TYPE_COUNTRY) ||
10531 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10532 request->alpha2))
10533 goto nla_put_failure;
10534 }
10535
10536 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10537 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10538 goto nla_put_failure;
10539
10540 genlmsg_end(msg, hdr);
10541
10542 rcu_read_lock();
10543 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10544 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10545 rcu_read_unlock();
10546
10547 return;
10548
10549 nla_put_failure:
10550 genlmsg_cancel(msg, hdr);
10551 nlmsg_free(msg);
10552 }
10553
10554 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10555 struct net_device *netdev,
10556 const u8 *buf, size_t len,
10557 enum nl80211_commands cmd, gfp_t gfp,
10558 int uapsd_queues)
10559 {
10560 struct sk_buff *msg;
10561 void *hdr;
10562
10563 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10564 if (!msg)
10565 return;
10566
10567 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10568 if (!hdr) {
10569 nlmsg_free(msg);
10570 return;
10571 }
10572
10573 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10574 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10575 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10576 goto nla_put_failure;
10577
10578 if (uapsd_queues >= 0) {
10579 struct nlattr *nla_wmm =
10580 nla_nest_start(msg, NL80211_ATTR_STA_WME);
10581 if (!nla_wmm)
10582 goto nla_put_failure;
10583
10584 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10585 uapsd_queues))
10586 goto nla_put_failure;
10587
10588 nla_nest_end(msg, nla_wmm);
10589 }
10590
10591 genlmsg_end(msg, hdr);
10592
10593 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10594 NL80211_MCGRP_MLME, gfp);
10595 return;
10596
10597 nla_put_failure:
10598 genlmsg_cancel(msg, hdr);
10599 nlmsg_free(msg);
10600 }
10601
10602 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10603 struct net_device *netdev, const u8 *buf,
10604 size_t len, gfp_t gfp)
10605 {
10606 nl80211_send_mlme_event(rdev, netdev, buf, len,
10607 NL80211_CMD_AUTHENTICATE, gfp, -1);
10608 }
10609
10610 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10611 struct net_device *netdev, const u8 *buf,
10612 size_t len, gfp_t gfp, int uapsd_queues)
10613 {
10614 nl80211_send_mlme_event(rdev, netdev, buf, len,
10615 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10616 }
10617
10618 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10619 struct net_device *netdev, const u8 *buf,
10620 size_t len, gfp_t gfp)
10621 {
10622 nl80211_send_mlme_event(rdev, netdev, buf, len,
10623 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10624 }
10625
10626 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10627 struct net_device *netdev, const u8 *buf,
10628 size_t len, gfp_t gfp)
10629 {
10630 nl80211_send_mlme_event(rdev, netdev, buf, len,
10631 NL80211_CMD_DISASSOCIATE, gfp, -1);
10632 }
10633
10634 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10635 size_t len)
10636 {
10637 struct wireless_dev *wdev = dev->ieee80211_ptr;
10638 struct wiphy *wiphy = wdev->wiphy;
10639 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10640 const struct ieee80211_mgmt *mgmt = (void *)buf;
10641 u32 cmd;
10642
10643 if (WARN_ON(len < 2))
10644 return;
10645
10646 if (ieee80211_is_deauth(mgmt->frame_control))
10647 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10648 else
10649 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10650
10651 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10652 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10653 }
10654 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10655
10656 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10657 struct net_device *netdev, int cmd,
10658 const u8 *addr, gfp_t gfp)
10659 {
10660 struct sk_buff *msg;
10661 void *hdr;
10662
10663 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10664 if (!msg)
10665 return;
10666
10667 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10668 if (!hdr) {
10669 nlmsg_free(msg);
10670 return;
10671 }
10672
10673 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10674 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10675 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10676 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10677 goto nla_put_failure;
10678
10679 genlmsg_end(msg, hdr);
10680
10681 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10682 NL80211_MCGRP_MLME, gfp);
10683 return;
10684
10685 nla_put_failure:
10686 genlmsg_cancel(msg, hdr);
10687 nlmsg_free(msg);
10688 }
10689
10690 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10691 struct net_device *netdev, const u8 *addr,
10692 gfp_t gfp)
10693 {
10694 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10695 addr, gfp);
10696 }
10697
10698 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10699 struct net_device *netdev, const u8 *addr,
10700 gfp_t gfp)
10701 {
10702 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10703 addr, gfp);
10704 }
10705
10706 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10707 struct net_device *netdev, const u8 *bssid,
10708 const u8 *req_ie, size_t req_ie_len,
10709 const u8 *resp_ie, size_t resp_ie_len,
10710 u16 status, gfp_t gfp)
10711 {
10712 struct sk_buff *msg;
10713 void *hdr;
10714
10715 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10716 if (!msg)
10717 return;
10718
10719 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10720 if (!hdr) {
10721 nlmsg_free(msg);
10722 return;
10723 }
10724
10725 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10726 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10727 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10728 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10729 (req_ie &&
10730 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10731 (resp_ie &&
10732 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10733 goto nla_put_failure;
10734
10735 genlmsg_end(msg, hdr);
10736
10737 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10738 NL80211_MCGRP_MLME, gfp);
10739 return;
10740
10741 nla_put_failure:
10742 genlmsg_cancel(msg, hdr);
10743 nlmsg_free(msg);
10744
10745 }
10746
10747 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10748 struct net_device *netdev, const u8 *bssid,
10749 const u8 *req_ie, size_t req_ie_len,
10750 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10751 {
10752 struct sk_buff *msg;
10753 void *hdr;
10754
10755 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10756 if (!msg)
10757 return;
10758
10759 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10760 if (!hdr) {
10761 nlmsg_free(msg);
10762 return;
10763 }
10764
10765 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10766 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10767 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10768 (req_ie &&
10769 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10770 (resp_ie &&
10771 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10772 goto nla_put_failure;
10773
10774 genlmsg_end(msg, hdr);
10775
10776 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10777 NL80211_MCGRP_MLME, gfp);
10778 return;
10779
10780 nla_put_failure:
10781 genlmsg_cancel(msg, hdr);
10782 nlmsg_free(msg);
10783
10784 }
10785
10786 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10787 struct net_device *netdev, u16 reason,
10788 const u8 *ie, size_t ie_len, bool from_ap)
10789 {
10790 struct sk_buff *msg;
10791 void *hdr;
10792
10793 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10794 if (!msg)
10795 return;
10796
10797 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10798 if (!hdr) {
10799 nlmsg_free(msg);
10800 return;
10801 }
10802
10803 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10804 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10805 (from_ap && reason &&
10806 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10807 (from_ap &&
10808 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10809 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10810 goto nla_put_failure;
10811
10812 genlmsg_end(msg, hdr);
10813
10814 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10815 NL80211_MCGRP_MLME, GFP_KERNEL);
10816 return;
10817
10818 nla_put_failure:
10819 genlmsg_cancel(msg, hdr);
10820 nlmsg_free(msg);
10821
10822 }
10823
10824 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10825 struct net_device *netdev, const u8 *bssid,
10826 gfp_t gfp)
10827 {
10828 struct sk_buff *msg;
10829 void *hdr;
10830
10831 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10832 if (!msg)
10833 return;
10834
10835 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10836 if (!hdr) {
10837 nlmsg_free(msg);
10838 return;
10839 }
10840
10841 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10842 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10843 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10844 goto nla_put_failure;
10845
10846 genlmsg_end(msg, hdr);
10847
10848 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10849 NL80211_MCGRP_MLME, gfp);
10850 return;
10851
10852 nla_put_failure:
10853 genlmsg_cancel(msg, hdr);
10854 nlmsg_free(msg);
10855 }
10856
10857 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10858 const u8* ie, u8 ie_len, gfp_t gfp)
10859 {
10860 struct wireless_dev *wdev = dev->ieee80211_ptr;
10861 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10862 struct sk_buff *msg;
10863 void *hdr;
10864
10865 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10866 return;
10867
10868 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10869
10870 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10871 if (!msg)
10872 return;
10873
10874 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10875 if (!hdr) {
10876 nlmsg_free(msg);
10877 return;
10878 }
10879
10880 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10881 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10882 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10883 (ie_len && ie &&
10884 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10885 goto nla_put_failure;
10886
10887 genlmsg_end(msg, hdr);
10888
10889 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10890 NL80211_MCGRP_MLME, gfp);
10891 return;
10892
10893 nla_put_failure:
10894 genlmsg_cancel(msg, hdr);
10895 nlmsg_free(msg);
10896 }
10897 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10898
10899 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10900 struct net_device *netdev, const u8 *addr,
10901 enum nl80211_key_type key_type, int key_id,
10902 const u8 *tsc, gfp_t gfp)
10903 {
10904 struct sk_buff *msg;
10905 void *hdr;
10906
10907 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10908 if (!msg)
10909 return;
10910
10911 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10912 if (!hdr) {
10913 nlmsg_free(msg);
10914 return;
10915 }
10916
10917 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10918 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10919 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10920 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10921 (key_id != -1 &&
10922 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10923 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10924 goto nla_put_failure;
10925
10926 genlmsg_end(msg, hdr);
10927
10928 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10929 NL80211_MCGRP_MLME, gfp);
10930 return;
10931
10932 nla_put_failure:
10933 genlmsg_cancel(msg, hdr);
10934 nlmsg_free(msg);
10935 }
10936
10937 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10938 struct ieee80211_channel *channel_before,
10939 struct ieee80211_channel *channel_after)
10940 {
10941 struct sk_buff *msg;
10942 void *hdr;
10943 struct nlattr *nl_freq;
10944
10945 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10946 if (!msg)
10947 return;
10948
10949 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10950 if (!hdr) {
10951 nlmsg_free(msg);
10952 return;
10953 }
10954
10955 /*
10956 * Since we are applying the beacon hint to a wiphy we know its
10957 * wiphy_idx is valid
10958 */
10959 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10960 goto nla_put_failure;
10961
10962 /* Before */
10963 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10964 if (!nl_freq)
10965 goto nla_put_failure;
10966 if (nl80211_msg_put_channel(msg, channel_before, false))
10967 goto nla_put_failure;
10968 nla_nest_end(msg, nl_freq);
10969
10970 /* After */
10971 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10972 if (!nl_freq)
10973 goto nla_put_failure;
10974 if (nl80211_msg_put_channel(msg, channel_after, false))
10975 goto nla_put_failure;
10976 nla_nest_end(msg, nl_freq);
10977
10978 genlmsg_end(msg, hdr);
10979
10980 rcu_read_lock();
10981 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10982 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10983 rcu_read_unlock();
10984
10985 return;
10986
10987 nla_put_failure:
10988 genlmsg_cancel(msg, hdr);
10989 nlmsg_free(msg);
10990 }
10991
10992 static void nl80211_send_remain_on_chan_event(
10993 int cmd, struct cfg80211_registered_device *rdev,
10994 struct wireless_dev *wdev, u64 cookie,
10995 struct ieee80211_channel *chan,
10996 unsigned int duration, gfp_t gfp)
10997 {
10998 struct sk_buff *msg;
10999 void *hdr;
11000
11001 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11002 if (!msg)
11003 return;
11004
11005 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11006 if (!hdr) {
11007 nlmsg_free(msg);
11008 return;
11009 }
11010
11011 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11012 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11013 wdev->netdev->ifindex)) ||
11014 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11015 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11016 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11017 NL80211_CHAN_NO_HT) ||
11018 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11019 goto nla_put_failure;
11020
11021 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11022 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11023 goto nla_put_failure;
11024
11025 genlmsg_end(msg, hdr);
11026
11027 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11028 NL80211_MCGRP_MLME, gfp);
11029 return;
11030
11031 nla_put_failure:
11032 genlmsg_cancel(msg, hdr);
11033 nlmsg_free(msg);
11034 }
11035
11036 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11037 struct ieee80211_channel *chan,
11038 unsigned int duration, gfp_t gfp)
11039 {
11040 struct wiphy *wiphy = wdev->wiphy;
11041 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11042
11043 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11044 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11045 rdev, wdev, cookie, chan,
11046 duration, gfp);
11047 }
11048 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11049
11050 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11051 struct ieee80211_channel *chan,
11052 gfp_t gfp)
11053 {
11054 struct wiphy *wiphy = wdev->wiphy;
11055 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11056
11057 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11058 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11059 rdev, wdev, cookie, chan, 0, gfp);
11060 }
11061 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11062
11063 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11064 struct station_info *sinfo, gfp_t gfp)
11065 {
11066 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11067 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11068 struct sk_buff *msg;
11069
11070 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11071
11072 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11073 if (!msg)
11074 return;
11075
11076 if (nl80211_send_station(msg, 0, 0, 0,
11077 rdev, dev, mac_addr, sinfo) < 0) {
11078 nlmsg_free(msg);
11079 return;
11080 }
11081
11082 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11083 NL80211_MCGRP_MLME, gfp);
11084 }
11085 EXPORT_SYMBOL(cfg80211_new_sta);
11086
11087 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11088 {
11089 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11090 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11091 struct sk_buff *msg;
11092 void *hdr;
11093
11094 trace_cfg80211_del_sta(dev, mac_addr);
11095
11096 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11097 if (!msg)
11098 return;
11099
11100 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11101 if (!hdr) {
11102 nlmsg_free(msg);
11103 return;
11104 }
11105
11106 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11107 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11108 goto nla_put_failure;
11109
11110 genlmsg_end(msg, hdr);
11111
11112 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11113 NL80211_MCGRP_MLME, gfp);
11114 return;
11115
11116 nla_put_failure:
11117 genlmsg_cancel(msg, hdr);
11118 nlmsg_free(msg);
11119 }
11120 EXPORT_SYMBOL(cfg80211_del_sta);
11121
11122 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11123 enum nl80211_connect_failed_reason reason,
11124 gfp_t gfp)
11125 {
11126 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11127 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11128 struct sk_buff *msg;
11129 void *hdr;
11130
11131 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11132 if (!msg)
11133 return;
11134
11135 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11136 if (!hdr) {
11137 nlmsg_free(msg);
11138 return;
11139 }
11140
11141 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11142 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11143 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11144 goto nla_put_failure;
11145
11146 genlmsg_end(msg, hdr);
11147
11148 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11149 NL80211_MCGRP_MLME, gfp);
11150 return;
11151
11152 nla_put_failure:
11153 genlmsg_cancel(msg, hdr);
11154 nlmsg_free(msg);
11155 }
11156 EXPORT_SYMBOL(cfg80211_conn_failed);
11157
11158 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11159 const u8 *addr, gfp_t gfp)
11160 {
11161 struct wireless_dev *wdev = dev->ieee80211_ptr;
11162 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11163 struct sk_buff *msg;
11164 void *hdr;
11165 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11166
11167 if (!nlportid)
11168 return false;
11169
11170 msg = nlmsg_new(100, gfp);
11171 if (!msg)
11172 return true;
11173
11174 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11175 if (!hdr) {
11176 nlmsg_free(msg);
11177 return true;
11178 }
11179
11180 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11181 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11182 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11183 goto nla_put_failure;
11184
11185 genlmsg_end(msg, hdr);
11186 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11187 return true;
11188
11189 nla_put_failure:
11190 genlmsg_cancel(msg, hdr);
11191 nlmsg_free(msg);
11192 return true;
11193 }
11194
11195 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11196 const u8 *addr, gfp_t gfp)
11197 {
11198 struct wireless_dev *wdev = dev->ieee80211_ptr;
11199 bool ret;
11200
11201 trace_cfg80211_rx_spurious_frame(dev, addr);
11202
11203 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11204 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11205 trace_cfg80211_return_bool(false);
11206 return false;
11207 }
11208 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11209 addr, gfp);
11210 trace_cfg80211_return_bool(ret);
11211 return ret;
11212 }
11213 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11214
11215 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11216 const u8 *addr, gfp_t gfp)
11217 {
11218 struct wireless_dev *wdev = dev->ieee80211_ptr;
11219 bool ret;
11220
11221 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11222
11223 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11224 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11225 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11226 trace_cfg80211_return_bool(false);
11227 return false;
11228 }
11229 ret = __nl80211_unexpected_frame(dev,
11230 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11231 addr, gfp);
11232 trace_cfg80211_return_bool(ret);
11233 return ret;
11234 }
11235 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11236
11237 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11238 struct wireless_dev *wdev, u32 nlportid,
11239 int freq, int sig_dbm,
11240 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11241 {
11242 struct net_device *netdev = wdev->netdev;
11243 struct sk_buff *msg;
11244 void *hdr;
11245
11246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11247 if (!msg)
11248 return -ENOMEM;
11249
11250 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11251 if (!hdr) {
11252 nlmsg_free(msg);
11253 return -ENOMEM;
11254 }
11255
11256 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11257 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11258 netdev->ifindex)) ||
11259 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11260 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11261 (sig_dbm &&
11262 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11263 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11264 (flags &&
11265 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11266 goto nla_put_failure;
11267
11268 genlmsg_end(msg, hdr);
11269
11270 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11271
11272 nla_put_failure:
11273 genlmsg_cancel(msg, hdr);
11274 nlmsg_free(msg);
11275 return -ENOBUFS;
11276 }
11277
11278 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11279 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11280 {
11281 struct wiphy *wiphy = wdev->wiphy;
11282 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11283 struct net_device *netdev = wdev->netdev;
11284 struct sk_buff *msg;
11285 void *hdr;
11286
11287 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11288
11289 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11290 if (!msg)
11291 return;
11292
11293 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11294 if (!hdr) {
11295 nlmsg_free(msg);
11296 return;
11297 }
11298
11299 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11300 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11301 netdev->ifindex)) ||
11302 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11303 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11304 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11305 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11306 goto nla_put_failure;
11307
11308 genlmsg_end(msg, hdr);
11309
11310 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11311 NL80211_MCGRP_MLME, gfp);
11312 return;
11313
11314 nla_put_failure:
11315 genlmsg_cancel(msg, hdr);
11316 nlmsg_free(msg);
11317 }
11318 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11319
11320 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11321 enum nl80211_cqm_rssi_threshold_event rssi_event,
11322 gfp_t gfp)
11323 {
11324 struct wireless_dev *wdev = dev->ieee80211_ptr;
11325 struct wiphy *wiphy = wdev->wiphy;
11326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11327 struct sk_buff *msg;
11328 struct nlattr *pinfoattr;
11329 void *hdr;
11330
11331 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11332
11333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11334 if (!msg)
11335 return;
11336
11337 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11338 if (!hdr) {
11339 nlmsg_free(msg);
11340 return;
11341 }
11342
11343 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11344 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11345 goto nla_put_failure;
11346
11347 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11348 if (!pinfoattr)
11349 goto nla_put_failure;
11350
11351 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11352 rssi_event))
11353 goto nla_put_failure;
11354
11355 nla_nest_end(msg, pinfoattr);
11356
11357 genlmsg_end(msg, hdr);
11358
11359 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11360 NL80211_MCGRP_MLME, gfp);
11361 return;
11362
11363 nla_put_failure:
11364 genlmsg_cancel(msg, hdr);
11365 nlmsg_free(msg);
11366 }
11367 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11368
11369 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11370 struct net_device *netdev, const u8 *bssid,
11371 const u8 *replay_ctr, gfp_t gfp)
11372 {
11373 struct sk_buff *msg;
11374 struct nlattr *rekey_attr;
11375 void *hdr;
11376
11377 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11378 if (!msg)
11379 return;
11380
11381 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11382 if (!hdr) {
11383 nlmsg_free(msg);
11384 return;
11385 }
11386
11387 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11388 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11389 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11390 goto nla_put_failure;
11391
11392 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11393 if (!rekey_attr)
11394 goto nla_put_failure;
11395
11396 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11397 NL80211_REPLAY_CTR_LEN, replay_ctr))
11398 goto nla_put_failure;
11399
11400 nla_nest_end(msg, rekey_attr);
11401
11402 genlmsg_end(msg, hdr);
11403
11404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11405 NL80211_MCGRP_MLME, gfp);
11406 return;
11407
11408 nla_put_failure:
11409 genlmsg_cancel(msg, hdr);
11410 nlmsg_free(msg);
11411 }
11412
11413 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11414 const u8 *replay_ctr, gfp_t gfp)
11415 {
11416 struct wireless_dev *wdev = dev->ieee80211_ptr;
11417 struct wiphy *wiphy = wdev->wiphy;
11418 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11419
11420 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11421 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11422 }
11423 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11424
11425 static void
11426 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11427 struct net_device *netdev, int index,
11428 const u8 *bssid, bool preauth, gfp_t gfp)
11429 {
11430 struct sk_buff *msg;
11431 struct nlattr *attr;
11432 void *hdr;
11433
11434 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11435 if (!msg)
11436 return;
11437
11438 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11439 if (!hdr) {
11440 nlmsg_free(msg);
11441 return;
11442 }
11443
11444 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11445 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11446 goto nla_put_failure;
11447
11448 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11449 if (!attr)
11450 goto nla_put_failure;
11451
11452 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11453 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11454 (preauth &&
11455 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11456 goto nla_put_failure;
11457
11458 nla_nest_end(msg, attr);
11459
11460 genlmsg_end(msg, hdr);
11461
11462 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11463 NL80211_MCGRP_MLME, gfp);
11464 return;
11465
11466 nla_put_failure:
11467 genlmsg_cancel(msg, hdr);
11468 nlmsg_free(msg);
11469 }
11470
11471 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11472 const u8 *bssid, bool preauth, gfp_t gfp)
11473 {
11474 struct wireless_dev *wdev = dev->ieee80211_ptr;
11475 struct wiphy *wiphy = wdev->wiphy;
11476 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11477
11478 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11479 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11480 }
11481 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11482
11483 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11484 struct net_device *netdev,
11485 struct cfg80211_chan_def *chandef,
11486 gfp_t gfp)
11487 {
11488 struct sk_buff *msg;
11489 void *hdr;
11490
11491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11492 if (!msg)
11493 return;
11494
11495 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11496 if (!hdr) {
11497 nlmsg_free(msg);
11498 return;
11499 }
11500
11501 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11502 goto nla_put_failure;
11503
11504 if (nl80211_send_chandef(msg, chandef))
11505 goto nla_put_failure;
11506
11507 genlmsg_end(msg, hdr);
11508
11509 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11510 NL80211_MCGRP_MLME, gfp);
11511 return;
11512
11513 nla_put_failure:
11514 genlmsg_cancel(msg, hdr);
11515 nlmsg_free(msg);
11516 }
11517
11518 void cfg80211_ch_switch_notify(struct net_device *dev,
11519 struct cfg80211_chan_def *chandef)
11520 {
11521 struct wireless_dev *wdev = dev->ieee80211_ptr;
11522 struct wiphy *wiphy = wdev->wiphy;
11523 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11524
11525 ASSERT_WDEV_LOCK(wdev);
11526
11527 trace_cfg80211_ch_switch_notify(dev, chandef);
11528
11529 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11530 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11531 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11532 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11533 return;
11534
11535 wdev->chandef = *chandef;
11536 wdev->preset_chandef = *chandef;
11537 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11538 }
11539 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11540
11541 void cfg80211_cqm_txe_notify(struct net_device *dev,
11542 const u8 *peer, u32 num_packets,
11543 u32 rate, u32 intvl, gfp_t gfp)
11544 {
11545 struct wireless_dev *wdev = dev->ieee80211_ptr;
11546 struct wiphy *wiphy = wdev->wiphy;
11547 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11548 struct sk_buff *msg;
11549 struct nlattr *pinfoattr;
11550 void *hdr;
11551
11552 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11553 if (!msg)
11554 return;
11555
11556 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11557 if (!hdr) {
11558 nlmsg_free(msg);
11559 return;
11560 }
11561
11562 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11563 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11564 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11565 goto nla_put_failure;
11566
11567 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11568 if (!pinfoattr)
11569 goto nla_put_failure;
11570
11571 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11572 goto nla_put_failure;
11573
11574 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11575 goto nla_put_failure;
11576
11577 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11578 goto nla_put_failure;
11579
11580 nla_nest_end(msg, pinfoattr);
11581
11582 genlmsg_end(msg, hdr);
11583
11584 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11585 NL80211_MCGRP_MLME, gfp);
11586 return;
11587
11588 nla_put_failure:
11589 genlmsg_cancel(msg, hdr);
11590 nlmsg_free(msg);
11591 }
11592 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11593
11594 void
11595 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11596 const struct cfg80211_chan_def *chandef,
11597 enum nl80211_radar_event event,
11598 struct net_device *netdev, gfp_t gfp)
11599 {
11600 struct sk_buff *msg;
11601 void *hdr;
11602
11603 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11604 if (!msg)
11605 return;
11606
11607 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11608 if (!hdr) {
11609 nlmsg_free(msg);
11610 return;
11611 }
11612
11613 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11614 goto nla_put_failure;
11615
11616 /* NOP and radar events don't need a netdev parameter */
11617 if (netdev) {
11618 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11619
11620 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11621 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11622 goto nla_put_failure;
11623 }
11624
11625 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11626 goto nla_put_failure;
11627
11628 if (nl80211_send_chandef(msg, chandef))
11629 goto nla_put_failure;
11630
11631 genlmsg_end(msg, hdr);
11632
11633 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11634 NL80211_MCGRP_MLME, gfp);
11635 return;
11636
11637 nla_put_failure:
11638 genlmsg_cancel(msg, hdr);
11639 nlmsg_free(msg);
11640 }
11641
11642 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11643 const u8 *peer, u32 num_packets, gfp_t gfp)
11644 {
11645 struct wireless_dev *wdev = dev->ieee80211_ptr;
11646 struct wiphy *wiphy = wdev->wiphy;
11647 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11648 struct sk_buff *msg;
11649 struct nlattr *pinfoattr;
11650 void *hdr;
11651
11652 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11653
11654 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11655 if (!msg)
11656 return;
11657
11658 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11659 if (!hdr) {
11660 nlmsg_free(msg);
11661 return;
11662 }
11663
11664 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11665 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11666 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11667 goto nla_put_failure;
11668
11669 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11670 if (!pinfoattr)
11671 goto nla_put_failure;
11672
11673 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11674 goto nla_put_failure;
11675
11676 nla_nest_end(msg, pinfoattr);
11677
11678 genlmsg_end(msg, hdr);
11679
11680 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11681 NL80211_MCGRP_MLME, gfp);
11682 return;
11683
11684 nla_put_failure:
11685 genlmsg_cancel(msg, hdr);
11686 nlmsg_free(msg);
11687 }
11688 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11689
11690 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11691 u64 cookie, bool acked, gfp_t gfp)
11692 {
11693 struct wireless_dev *wdev = dev->ieee80211_ptr;
11694 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11695 struct sk_buff *msg;
11696 void *hdr;
11697
11698 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11699
11700 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11701
11702 if (!msg)
11703 return;
11704
11705 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11706 if (!hdr) {
11707 nlmsg_free(msg);
11708 return;
11709 }
11710
11711 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11712 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11713 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11714 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11715 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11716 goto nla_put_failure;
11717
11718 genlmsg_end(msg, hdr);
11719
11720 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11721 NL80211_MCGRP_MLME, gfp);
11722 return;
11723
11724 nla_put_failure:
11725 genlmsg_cancel(msg, hdr);
11726 nlmsg_free(msg);
11727 }
11728 EXPORT_SYMBOL(cfg80211_probe_status);
11729
11730 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11731 const u8 *frame, size_t len,
11732 int freq, int sig_dbm)
11733 {
11734 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11735 struct sk_buff *msg;
11736 void *hdr;
11737 struct cfg80211_beacon_registration *reg;
11738
11739 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11740
11741 spin_lock_bh(&rdev->beacon_registrations_lock);
11742 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11743 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11744 if (!msg) {
11745 spin_unlock_bh(&rdev->beacon_registrations_lock);
11746 return;
11747 }
11748
11749 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11750 if (!hdr)
11751 goto nla_put_failure;
11752
11753 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11754 (freq &&
11755 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11756 (sig_dbm &&
11757 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11758 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11759 goto nla_put_failure;
11760
11761 genlmsg_end(msg, hdr);
11762
11763 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11764 }
11765 spin_unlock_bh(&rdev->beacon_registrations_lock);
11766 return;
11767
11768 nla_put_failure:
11769 spin_unlock_bh(&rdev->beacon_registrations_lock);
11770 if (hdr)
11771 genlmsg_cancel(msg, hdr);
11772 nlmsg_free(msg);
11773 }
11774 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11775
11776 #ifdef CONFIG_PM
11777 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11778 struct cfg80211_wowlan_wakeup *wakeup,
11779 gfp_t gfp)
11780 {
11781 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11782 struct sk_buff *msg;
11783 void *hdr;
11784 int size = 200;
11785
11786 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11787
11788 if (wakeup)
11789 size += wakeup->packet_present_len;
11790
11791 msg = nlmsg_new(size, gfp);
11792 if (!msg)
11793 return;
11794
11795 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11796 if (!hdr)
11797 goto free_msg;
11798
11799 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11800 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11801 goto free_msg;
11802
11803 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11804 wdev->netdev->ifindex))
11805 goto free_msg;
11806
11807 if (wakeup) {
11808 struct nlattr *reasons;
11809
11810 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11811 if (!reasons)
11812 goto free_msg;
11813
11814 if (wakeup->disconnect &&
11815 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11816 goto free_msg;
11817 if (wakeup->magic_pkt &&
11818 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11819 goto free_msg;
11820 if (wakeup->gtk_rekey_failure &&
11821 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11822 goto free_msg;
11823 if (wakeup->eap_identity_req &&
11824 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11825 goto free_msg;
11826 if (wakeup->four_way_handshake &&
11827 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11828 goto free_msg;
11829 if (wakeup->rfkill_release &&
11830 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11831 goto free_msg;
11832
11833 if (wakeup->pattern_idx >= 0 &&
11834 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11835 wakeup->pattern_idx))
11836 goto free_msg;
11837
11838 if (wakeup->tcp_match &&
11839 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11840 goto free_msg;
11841
11842 if (wakeup->tcp_connlost &&
11843 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11844 goto free_msg;
11845
11846 if (wakeup->tcp_nomoretokens &&
11847 nla_put_flag(msg,
11848 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11849 goto free_msg;
11850
11851 if (wakeup->packet) {
11852 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11853 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11854
11855 if (!wakeup->packet_80211) {
11856 pkt_attr =
11857 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11858 len_attr =
11859 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11860 }
11861
11862 if (wakeup->packet_len &&
11863 nla_put_u32(msg, len_attr, wakeup->packet_len))
11864 goto free_msg;
11865
11866 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11867 wakeup->packet))
11868 goto free_msg;
11869 }
11870
11871 nla_nest_end(msg, reasons);
11872 }
11873
11874 genlmsg_end(msg, hdr);
11875
11876 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11877 NL80211_MCGRP_MLME, gfp);
11878 return;
11879
11880 free_msg:
11881 nlmsg_free(msg);
11882 }
11883 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11884 #endif
11885
11886 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11887 enum nl80211_tdls_operation oper,
11888 u16 reason_code, gfp_t gfp)
11889 {
11890 struct wireless_dev *wdev = dev->ieee80211_ptr;
11891 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11892 struct sk_buff *msg;
11893 void *hdr;
11894
11895 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11896 reason_code);
11897
11898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11899 if (!msg)
11900 return;
11901
11902 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11903 if (!hdr) {
11904 nlmsg_free(msg);
11905 return;
11906 }
11907
11908 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11909 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11910 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11911 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11912 (reason_code > 0 &&
11913 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11914 goto nla_put_failure;
11915
11916 genlmsg_end(msg, hdr);
11917
11918 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11919 NL80211_MCGRP_MLME, gfp);
11920 return;
11921
11922 nla_put_failure:
11923 genlmsg_cancel(msg, hdr);
11924 nlmsg_free(msg);
11925 }
11926 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11927
11928 static int nl80211_netlink_notify(struct notifier_block * nb,
11929 unsigned long state,
11930 void *_notify)
11931 {
11932 struct netlink_notify *notify = _notify;
11933 struct cfg80211_registered_device *rdev;
11934 struct wireless_dev *wdev;
11935 struct cfg80211_beacon_registration *reg, *tmp;
11936
11937 if (state != NETLINK_URELEASE)
11938 return NOTIFY_DONE;
11939
11940 rcu_read_lock();
11941
11942 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11943 bool schedule_destroy_work = false;
11944
11945 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
11946 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11947
11948 if (wdev->owner_nlportid == notify->portid)
11949 schedule_destroy_work = true;
11950 }
11951
11952 spin_lock_bh(&rdev->beacon_registrations_lock);
11953 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11954 list) {
11955 if (reg->nlportid == notify->portid) {
11956 list_del(&reg->list);
11957 kfree(reg);
11958 break;
11959 }
11960 }
11961 spin_unlock_bh(&rdev->beacon_registrations_lock);
11962
11963 if (schedule_destroy_work) {
11964 struct cfg80211_iface_destroy *destroy;
11965
11966 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
11967 if (destroy) {
11968 destroy->nlportid = notify->portid;
11969 spin_lock(&rdev->destroy_list_lock);
11970 list_add(&destroy->list, &rdev->destroy_list);
11971 spin_unlock(&rdev->destroy_list_lock);
11972 schedule_work(&rdev->destroy_work);
11973 }
11974 }
11975 }
11976
11977 rcu_read_unlock();
11978
11979 return NOTIFY_OK;
11980 }
11981
11982 static struct notifier_block nl80211_netlink_notifier = {
11983 .notifier_call = nl80211_netlink_notify,
11984 };
11985
11986 void cfg80211_ft_event(struct net_device *netdev,
11987 struct cfg80211_ft_event_params *ft_event)
11988 {
11989 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11990 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11991 struct sk_buff *msg;
11992 void *hdr;
11993
11994 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11995
11996 if (!ft_event->target_ap)
11997 return;
11998
11999 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12000 if (!msg)
12001 return;
12002
12003 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12004 if (!hdr)
12005 goto out;
12006
12007 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12008 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12009 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12010 goto out;
12011
12012 if (ft_event->ies &&
12013 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12014 goto out;
12015 if (ft_event->ric_ies &&
12016 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12017 ft_event->ric_ies))
12018 goto out;
12019
12020 genlmsg_end(msg, hdr);
12021
12022 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12023 NL80211_MCGRP_MLME, GFP_KERNEL);
12024 return;
12025 out:
12026 nlmsg_free(msg);
12027 }
12028 EXPORT_SYMBOL(cfg80211_ft_event);
12029
12030 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12031 {
12032 struct cfg80211_registered_device *rdev;
12033 struct sk_buff *msg;
12034 void *hdr;
12035 u32 nlportid;
12036
12037 rdev = wiphy_to_rdev(wdev->wiphy);
12038 if (!rdev->crit_proto_nlportid)
12039 return;
12040
12041 nlportid = rdev->crit_proto_nlportid;
12042 rdev->crit_proto_nlportid = 0;
12043
12044 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12045 if (!msg)
12046 return;
12047
12048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12049 if (!hdr)
12050 goto nla_put_failure;
12051
12052 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12053 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12054 goto nla_put_failure;
12055
12056 genlmsg_end(msg, hdr);
12057
12058 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12059 return;
12060
12061 nla_put_failure:
12062 if (hdr)
12063 genlmsg_cancel(msg, hdr);
12064 nlmsg_free(msg);
12065
12066 }
12067 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12068
12069 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12070 {
12071 struct wiphy *wiphy = wdev->wiphy;
12072 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12073 struct sk_buff *msg;
12074 void *hdr;
12075
12076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12077 if (!msg)
12078 return;
12079
12080 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12081 if (!hdr)
12082 goto out;
12083
12084 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12085 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12086 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12087 goto out;
12088
12089 genlmsg_end(msg, hdr);
12090
12091 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12092 NL80211_MCGRP_MLME, GFP_KERNEL);
12093 return;
12094 out:
12095 nlmsg_free(msg);
12096 }
12097
12098 /* initialisation/exit functions */
12099
12100 int nl80211_init(void)
12101 {
12102 int err;
12103
12104 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12105 nl80211_mcgrps);
12106 if (err)
12107 return err;
12108
12109 err = netlink_register_notifier(&nl80211_netlink_notifier);
12110 if (err)
12111 goto err_out;
12112
12113 return 0;
12114 err_out:
12115 genl_unregister_family(&nl80211_fam);
12116 return err;
12117 }
12118
12119 void nl80211_exit(void)
12120 {
12121 netlink_unregister_notifier(&nl80211_netlink_notifier);
12122 genl_unregister_family(&nl80211_fam);
12123 }
Linux kernel - Deliverables
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