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cfg80211: Add option to specify previous BSSID for Connect command
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2016 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
38 struct genl_info *info);
39
40 /* the netlink family */
41 static struct genl_family nl80211_fam = {
42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
43 .name = NL80211_GENL_NAME, /* have users key off the name instead */
44 .hdrsize = 0, /* no private header */
45 .version = 1, /* no particular meaning now */
46 .maxattr = NL80211_ATTR_MAX,
47 .netnsok = true,
48 .pre_doit = nl80211_pre_doit,
49 .post_doit = nl80211_post_doit,
50 };
51
52 /* multicast groups */
53 enum nl80211_multicast_groups {
54 NL80211_MCGRP_CONFIG,
55 NL80211_MCGRP_SCAN,
56 NL80211_MCGRP_REGULATORY,
57 NL80211_MCGRP_MLME,
58 NL80211_MCGRP_VENDOR,
59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
60 };
61
62 static const struct genl_multicast_group nl80211_mcgrps[] = {
63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
68 #ifdef CONFIG_NL80211_TESTMODE
69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
70 #endif
71 };
72
73 /* returns ERR_PTR values */
74 static struct wireless_dev *
75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
76 {
77 struct cfg80211_registered_device *rdev;
78 struct wireless_dev *result = NULL;
79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
81 u64 wdev_id;
82 int wiphy_idx = -1;
83 int ifidx = -1;
84
85 ASSERT_RTNL();
86
87 if (!have_ifidx && !have_wdev_id)
88 return ERR_PTR(-EINVAL);
89
90 if (have_ifidx)
91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
92 if (have_wdev_id) {
93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
94 wiphy_idx = wdev_id >> 32;
95 }
96
97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
98 struct wireless_dev *wdev;
99
100 if (wiphy_net(&rdev->wiphy) != netns)
101 continue;
102
103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
104 continue;
105
106 list_for_each_entry(wdev, &rdev->wdev_list, list) {
107 if (have_ifidx && wdev->netdev &&
108 wdev->netdev->ifindex == ifidx) {
109 result = wdev;
110 break;
111 }
112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
113 result = wdev;
114 break;
115 }
116 }
117
118 if (result)
119 break;
120 }
121
122 if (result)
123 return result;
124 return ERR_PTR(-ENODEV);
125 }
126
127 static struct cfg80211_registered_device *
128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
129 {
130 struct cfg80211_registered_device *rdev = NULL, *tmp;
131 struct net_device *netdev;
132
133 ASSERT_RTNL();
134
135 if (!attrs[NL80211_ATTR_WIPHY] &&
136 !attrs[NL80211_ATTR_IFINDEX] &&
137 !attrs[NL80211_ATTR_WDEV])
138 return ERR_PTR(-EINVAL);
139
140 if (attrs[NL80211_ATTR_WIPHY])
141 rdev = cfg80211_rdev_by_wiphy_idx(
142 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
143
144 if (attrs[NL80211_ATTR_WDEV]) {
145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
146 struct wireless_dev *wdev;
147 bool found = false;
148
149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
150 if (tmp) {
151 /* make sure wdev exists */
152 list_for_each_entry(wdev, &tmp->wdev_list, list) {
153 if (wdev->identifier != (u32)wdev_id)
154 continue;
155 found = true;
156 break;
157 }
158
159 if (!found)
160 tmp = NULL;
161
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164 rdev = tmp;
165 }
166 }
167
168 if (attrs[NL80211_ATTR_IFINDEX]) {
169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
170 netdev = __dev_get_by_index(netns, ifindex);
171 if (netdev) {
172 if (netdev->ieee80211_ptr)
173 tmp = wiphy_to_rdev(
174 netdev->ieee80211_ptr->wiphy);
175 else
176 tmp = NULL;
177
178 /* not wireless device -- return error */
179 if (!tmp)
180 return ERR_PTR(-EINVAL);
181
182 /* mismatch -- return error */
183 if (rdev && tmp != rdev)
184 return ERR_PTR(-EINVAL);
185
186 rdev = tmp;
187 }
188 }
189
190 if (!rdev)
191 return ERR_PTR(-ENODEV);
192
193 if (netns != wiphy_net(&rdev->wiphy))
194 return ERR_PTR(-ENODEV);
195
196 return rdev;
197 }
198
199 /*
200 * This function returns a pointer to the driver
201 * that the genl_info item that is passed refers to.
202 *
203 * The result of this can be a PTR_ERR and hence must
204 * be checked with IS_ERR() for errors.
205 */
206 static struct cfg80211_registered_device *
207 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
208 {
209 return __cfg80211_rdev_from_attrs(netns, info->attrs);
210 }
211
212 /* policy for the attributes */
213 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
214 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
215 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
216 .len = 20-1 },
217 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
218
219 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
220 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
221 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
223 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
224
225 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
227 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
230 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
231
232 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
234 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
235
236 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
237 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
238
239 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
240 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
241 .len = WLAN_MAX_KEY_LEN },
242 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
243 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
244 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
245 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
246 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
247
248 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
249 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
250 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
251 .len = IEEE80211_MAX_DATA_LEN },
252 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_DATA_LEN },
254 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
255 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
256 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
257 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
258 .len = NL80211_MAX_SUPP_RATES },
259 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
260 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
261 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
262 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
263 .len = IEEE80211_MAX_MESH_ID_LEN },
264 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
265
266 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
267 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
268
269 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
273 .len = NL80211_MAX_SUPP_RATES },
274 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
275
276 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
277 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
278
279 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
280
281 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
282 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
283 .len = IEEE80211_MAX_DATA_LEN },
284 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
285 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
286
287 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
288 .len = IEEE80211_MAX_SSID_LEN },
289 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
290 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
291 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
292 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
293 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
294 [NL80211_ATTR_STA_FLAGS2] = {
295 .len = sizeof(struct nl80211_sta_flag_update),
296 },
297 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
299 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
300 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
301 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
302 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
303 [NL80211_ATTR_PID] = { .type = NLA_U32 },
304 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
305 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
306 .len = WLAN_PMKID_LEN },
307 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
308 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
309 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
310 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
311 .len = IEEE80211_MAX_DATA_LEN },
312 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
313 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
314 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
315 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
316 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
317 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
319 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
320 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
321 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
322 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
323 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
324 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
325 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
326 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
327 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
328 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
329 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
330 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
331 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
332 .len = IEEE80211_MAX_DATA_LEN },
333 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
334 .len = IEEE80211_MAX_DATA_LEN },
335 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
336 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
337 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
338 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
343 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
344 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
345 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
346 .len = IEEE80211_MAX_DATA_LEN },
347 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
348 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
350 .len = NL80211_HT_CAPABILITY_LEN
351 },
352 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
353 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
354 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
355 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
356 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
357 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
358 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
359 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
360 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
361 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
362 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
363 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
364 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
365 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
366 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
367 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
368 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
369 .len = NL80211_VHT_CAPABILITY_LEN,
370 },
371 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
372 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
373 .len = IEEE80211_MAX_DATA_LEN },
374 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
375 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
376 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
377 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
378 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
379 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
381 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
382 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
383 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
384 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
387 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
388 .len = IEEE80211_QOS_MAP_LEN_MAX },
389 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
390 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
391 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
392 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
393 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
394 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
395 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
396 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
397 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
398 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
399 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
400 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
401 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
402 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
403 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
404 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
405 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
406 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
407 };
408
409 /* policy for the key attributes */
410 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
411 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
412 [NL80211_KEY_IDX] = { .type = NLA_U8 },
413 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
414 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
415 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
416 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
417 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
418 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
419 };
420
421 /* policy for the key default flags */
422 static const struct nla_policy
423 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
424 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
425 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
426 };
427
428 /* policy for WoWLAN attributes */
429 static const struct nla_policy
430 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
431 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
432 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
433 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
435 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
436 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
437 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
438 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
439 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
440 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
441 };
442
443 static const struct nla_policy
444 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
445 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
446 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
447 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
448 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
449 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
450 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
451 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
452 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
453 },
454 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
455 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
456 },
457 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
458 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
459 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
460 };
461
462 /* policy for coalesce rule attributes */
463 static const struct nla_policy
464 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
465 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
466 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
467 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
468 };
469
470 /* policy for GTK rekey offload attributes */
471 static const struct nla_policy
472 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
473 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
474 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
475 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
476 };
477
478 static const struct nla_policy
479 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
480 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
481 .len = IEEE80211_MAX_SSID_LEN },
482 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
483 };
484
485 static const struct nla_policy
486 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
487 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
488 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
489 };
490
491 static const struct nla_policy
492 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
493 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
494 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
495 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
496 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
497 },
498 };
499
500 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
501 struct netlink_callback *cb,
502 struct cfg80211_registered_device **rdev,
503 struct wireless_dev **wdev)
504 {
505 int err;
506
507 rtnl_lock();
508
509 if (!cb->args[0]) {
510 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
511 nl80211_fam.attrbuf, nl80211_fam.maxattr,
512 nl80211_policy);
513 if (err)
514 goto out_unlock;
515
516 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
517 nl80211_fam.attrbuf);
518 if (IS_ERR(*wdev)) {
519 err = PTR_ERR(*wdev);
520 goto out_unlock;
521 }
522 *rdev = wiphy_to_rdev((*wdev)->wiphy);
523 /* 0 is the first index - add 1 to parse only once */
524 cb->args[0] = (*rdev)->wiphy_idx + 1;
525 cb->args[1] = (*wdev)->identifier;
526 } else {
527 /* subtract the 1 again here */
528 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
529 struct wireless_dev *tmp;
530
531 if (!wiphy) {
532 err = -ENODEV;
533 goto out_unlock;
534 }
535 *rdev = wiphy_to_rdev(wiphy);
536 *wdev = NULL;
537
538 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
539 if (tmp->identifier == cb->args[1]) {
540 *wdev = tmp;
541 break;
542 }
543 }
544
545 if (!*wdev) {
546 err = -ENODEV;
547 goto out_unlock;
548 }
549 }
550
551 return 0;
552 out_unlock:
553 rtnl_unlock();
554 return err;
555 }
556
557 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
558 {
559 rtnl_unlock();
560 }
561
562 /* IE validation */
563 static bool is_valid_ie_attr(const struct nlattr *attr)
564 {
565 const u8 *pos;
566 int len;
567
568 if (!attr)
569 return true;
570
571 pos = nla_data(attr);
572 len = nla_len(attr);
573
574 while (len) {
575 u8 elemlen;
576
577 if (len < 2)
578 return false;
579 len -= 2;
580
581 elemlen = pos[1];
582 if (elemlen > len)
583 return false;
584
585 len -= elemlen;
586 pos += 2 + elemlen;
587 }
588
589 return true;
590 }
591
592 /* message building helper */
593 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
594 int flags, u8 cmd)
595 {
596 /* since there is no private header just add the generic one */
597 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
598 }
599
600 static int nl80211_msg_put_channel(struct sk_buff *msg,
601 struct ieee80211_channel *chan,
602 bool large)
603 {
604 /* Some channels must be completely excluded from the
605 * list to protect old user-space tools from breaking
606 */
607 if (!large && chan->flags &
608 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
609 return 0;
610
611 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
612 chan->center_freq))
613 goto nla_put_failure;
614
615 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
616 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
617 goto nla_put_failure;
618 if (chan->flags & IEEE80211_CHAN_NO_IR) {
619 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
620 goto nla_put_failure;
621 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
622 goto nla_put_failure;
623 }
624 if (chan->flags & IEEE80211_CHAN_RADAR) {
625 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
626 goto nla_put_failure;
627 if (large) {
628 u32 time;
629
630 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
631
632 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
633 chan->dfs_state))
634 goto nla_put_failure;
635 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
636 time))
637 goto nla_put_failure;
638 if (nla_put_u32(msg,
639 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
640 chan->dfs_cac_ms))
641 goto nla_put_failure;
642 }
643 }
644
645 if (large) {
646 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
647 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
648 goto nla_put_failure;
649 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
650 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
651 goto nla_put_failure;
652 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
653 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
654 goto nla_put_failure;
655 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
656 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
657 goto nla_put_failure;
658 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
659 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
660 goto nla_put_failure;
661 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
662 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
663 goto nla_put_failure;
664 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
665 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
666 goto nla_put_failure;
667 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
668 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
669 goto nla_put_failure;
670 }
671
672 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
673 DBM_TO_MBM(chan->max_power)))
674 goto nla_put_failure;
675
676 return 0;
677
678 nla_put_failure:
679 return -ENOBUFS;
680 }
681
682 /* netlink command implementations */
683
684 struct key_parse {
685 struct key_params p;
686 int idx;
687 int type;
688 bool def, defmgmt;
689 bool def_uni, def_multi;
690 };
691
692 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
693 {
694 struct nlattr *tb[NL80211_KEY_MAX + 1];
695 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
696 nl80211_key_policy);
697 if (err)
698 return err;
699
700 k->def = !!tb[NL80211_KEY_DEFAULT];
701 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
702
703 if (k->def) {
704 k->def_uni = true;
705 k->def_multi = true;
706 }
707 if (k->defmgmt)
708 k->def_multi = true;
709
710 if (tb[NL80211_KEY_IDX])
711 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
712
713 if (tb[NL80211_KEY_DATA]) {
714 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
715 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
716 }
717
718 if (tb[NL80211_KEY_SEQ]) {
719 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
720 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
721 }
722
723 if (tb[NL80211_KEY_CIPHER])
724 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
725
726 if (tb[NL80211_KEY_TYPE]) {
727 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
728 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
729 return -EINVAL;
730 }
731
732 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
733 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
734 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
735 tb[NL80211_KEY_DEFAULT_TYPES],
736 nl80211_key_default_policy);
737 if (err)
738 return err;
739
740 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
741 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
742 }
743
744 return 0;
745 }
746
747 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
748 {
749 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
750 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
751 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
752 }
753
754 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
755 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
756 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
757 }
758
759 if (info->attrs[NL80211_ATTR_KEY_IDX])
760 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
761
762 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
763 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
764
765 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
766 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
767
768 if (k->def) {
769 k->def_uni = true;
770 k->def_multi = true;
771 }
772 if (k->defmgmt)
773 k->def_multi = true;
774
775 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
776 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
777 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
778 return -EINVAL;
779 }
780
781 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
782 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
783 int err = nla_parse_nested(
784 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
785 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
786 nl80211_key_default_policy);
787 if (err)
788 return err;
789
790 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
791 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
792 }
793
794 return 0;
795 }
796
797 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
798 {
799 int err;
800
801 memset(k, 0, sizeof(*k));
802 k->idx = -1;
803 k->type = -1;
804
805 if (info->attrs[NL80211_ATTR_KEY])
806 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
807 else
808 err = nl80211_parse_key_old(info, k);
809
810 if (err)
811 return err;
812
813 if (k->def && k->defmgmt)
814 return -EINVAL;
815
816 if (k->defmgmt) {
817 if (k->def_uni || !k->def_multi)
818 return -EINVAL;
819 }
820
821 if (k->idx != -1) {
822 if (k->defmgmt) {
823 if (k->idx < 4 || k->idx > 5)
824 return -EINVAL;
825 } else if (k->def) {
826 if (k->idx < 0 || k->idx > 3)
827 return -EINVAL;
828 } else {
829 if (k->idx < 0 || k->idx > 5)
830 return -EINVAL;
831 }
832 }
833
834 return 0;
835 }
836
837 static struct cfg80211_cached_keys *
838 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
839 struct nlattr *keys, bool *no_ht)
840 {
841 struct key_parse parse;
842 struct nlattr *key;
843 struct cfg80211_cached_keys *result;
844 int rem, err, def = 0;
845
846 result = kzalloc(sizeof(*result), GFP_KERNEL);
847 if (!result)
848 return ERR_PTR(-ENOMEM);
849
850 result->def = -1;
851 result->defmgmt = -1;
852
853 nla_for_each_nested(key, keys, rem) {
854 memset(&parse, 0, sizeof(parse));
855 parse.idx = -1;
856
857 err = nl80211_parse_key_new(key, &parse);
858 if (err)
859 goto error;
860 err = -EINVAL;
861 if (!parse.p.key)
862 goto error;
863 if (parse.idx < 0 || parse.idx > 4)
864 goto error;
865 if (parse.def) {
866 if (def)
867 goto error;
868 def = 1;
869 result->def = parse.idx;
870 if (!parse.def_uni || !parse.def_multi)
871 goto error;
872 } else if (parse.defmgmt)
873 goto error;
874 err = cfg80211_validate_key_settings(rdev, &parse.p,
875 parse.idx, false, NULL);
876 if (err)
877 goto error;
878 result->params[parse.idx].cipher = parse.p.cipher;
879 result->params[parse.idx].key_len = parse.p.key_len;
880 result->params[parse.idx].key = result->data[parse.idx];
881 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
882
883 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
884 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
885 if (no_ht)
886 *no_ht = true;
887 }
888 }
889
890 return result;
891 error:
892 kfree(result);
893 return ERR_PTR(err);
894 }
895
896 static int nl80211_key_allowed(struct wireless_dev *wdev)
897 {
898 ASSERT_WDEV_LOCK(wdev);
899
900 switch (wdev->iftype) {
901 case NL80211_IFTYPE_AP:
902 case NL80211_IFTYPE_AP_VLAN:
903 case NL80211_IFTYPE_P2P_GO:
904 case NL80211_IFTYPE_MESH_POINT:
905 break;
906 case NL80211_IFTYPE_ADHOC:
907 case NL80211_IFTYPE_STATION:
908 case NL80211_IFTYPE_P2P_CLIENT:
909 if (!wdev->current_bss)
910 return -ENOLINK;
911 break;
912 case NL80211_IFTYPE_UNSPECIFIED:
913 case NL80211_IFTYPE_OCB:
914 case NL80211_IFTYPE_MONITOR:
915 case NL80211_IFTYPE_P2P_DEVICE:
916 case NL80211_IFTYPE_WDS:
917 case NUM_NL80211_IFTYPES:
918 return -EINVAL;
919 }
920
921 return 0;
922 }
923
924 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
925 struct nlattr *tb)
926 {
927 struct ieee80211_channel *chan;
928
929 if (tb == NULL)
930 return NULL;
931 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
932 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
933 return NULL;
934 return chan;
935 }
936
937 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
938 {
939 struct nlattr *nl_modes = nla_nest_start(msg, attr);
940 int i;
941
942 if (!nl_modes)
943 goto nla_put_failure;
944
945 i = 0;
946 while (ifmodes) {
947 if ((ifmodes & 1) && nla_put_flag(msg, i))
948 goto nla_put_failure;
949 ifmodes >>= 1;
950 i++;
951 }
952
953 nla_nest_end(msg, nl_modes);
954 return 0;
955
956 nla_put_failure:
957 return -ENOBUFS;
958 }
959
960 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
961 struct sk_buff *msg,
962 bool large)
963 {
964 struct nlattr *nl_combis;
965 int i, j;
966
967 nl_combis = nla_nest_start(msg,
968 NL80211_ATTR_INTERFACE_COMBINATIONS);
969 if (!nl_combis)
970 goto nla_put_failure;
971
972 for (i = 0; i < wiphy->n_iface_combinations; i++) {
973 const struct ieee80211_iface_combination *c;
974 struct nlattr *nl_combi, *nl_limits;
975
976 c = &wiphy->iface_combinations[i];
977
978 nl_combi = nla_nest_start(msg, i + 1);
979 if (!nl_combi)
980 goto nla_put_failure;
981
982 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
983 if (!nl_limits)
984 goto nla_put_failure;
985
986 for (j = 0; j < c->n_limits; j++) {
987 struct nlattr *nl_limit;
988
989 nl_limit = nla_nest_start(msg, j + 1);
990 if (!nl_limit)
991 goto nla_put_failure;
992 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
993 c->limits[j].max))
994 goto nla_put_failure;
995 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
996 c->limits[j].types))
997 goto nla_put_failure;
998 nla_nest_end(msg, nl_limit);
999 }
1000
1001 nla_nest_end(msg, nl_limits);
1002
1003 if (c->beacon_int_infra_match &&
1004 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1005 goto nla_put_failure;
1006 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1007 c->num_different_channels) ||
1008 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1009 c->max_interfaces))
1010 goto nla_put_failure;
1011 if (large &&
1012 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1013 c->radar_detect_widths) ||
1014 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1015 c->radar_detect_regions)))
1016 goto nla_put_failure;
1017
1018 nla_nest_end(msg, nl_combi);
1019 }
1020
1021 nla_nest_end(msg, nl_combis);
1022
1023 return 0;
1024 nla_put_failure:
1025 return -ENOBUFS;
1026 }
1027
1028 #ifdef CONFIG_PM
1029 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1030 struct sk_buff *msg)
1031 {
1032 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1033 struct nlattr *nl_tcp;
1034
1035 if (!tcp)
1036 return 0;
1037
1038 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1039 if (!nl_tcp)
1040 return -ENOBUFS;
1041
1042 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1043 tcp->data_payload_max))
1044 return -ENOBUFS;
1045
1046 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1047 tcp->data_payload_max))
1048 return -ENOBUFS;
1049
1050 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1051 return -ENOBUFS;
1052
1053 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1054 sizeof(*tcp->tok), tcp->tok))
1055 return -ENOBUFS;
1056
1057 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1058 tcp->data_interval_max))
1059 return -ENOBUFS;
1060
1061 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1062 tcp->wake_payload_max))
1063 return -ENOBUFS;
1064
1065 nla_nest_end(msg, nl_tcp);
1066 return 0;
1067 }
1068
1069 static int nl80211_send_wowlan(struct sk_buff *msg,
1070 struct cfg80211_registered_device *rdev,
1071 bool large)
1072 {
1073 struct nlattr *nl_wowlan;
1074
1075 if (!rdev->wiphy.wowlan)
1076 return 0;
1077
1078 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1079 if (!nl_wowlan)
1080 return -ENOBUFS;
1081
1082 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1083 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1084 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1085 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1086 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1087 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1088 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1089 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1090 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1091 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1092 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1093 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1094 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1095 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1096 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1097 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1098 return -ENOBUFS;
1099
1100 if (rdev->wiphy.wowlan->n_patterns) {
1101 struct nl80211_pattern_support pat = {
1102 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1103 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1104 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1105 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1106 };
1107
1108 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1109 sizeof(pat), &pat))
1110 return -ENOBUFS;
1111 }
1112
1113 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1114 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1115 rdev->wiphy.wowlan->max_nd_match_sets))
1116 return -ENOBUFS;
1117
1118 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1119 return -ENOBUFS;
1120
1121 nla_nest_end(msg, nl_wowlan);
1122
1123 return 0;
1124 }
1125 #endif
1126
1127 static int nl80211_send_coalesce(struct sk_buff *msg,
1128 struct cfg80211_registered_device *rdev)
1129 {
1130 struct nl80211_coalesce_rule_support rule;
1131
1132 if (!rdev->wiphy.coalesce)
1133 return 0;
1134
1135 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1136 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1137 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1138 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1139 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1140 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1141
1142 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1143 return -ENOBUFS;
1144
1145 return 0;
1146 }
1147
1148 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1149 struct ieee80211_supported_band *sband)
1150 {
1151 struct nlattr *nl_rates, *nl_rate;
1152 struct ieee80211_rate *rate;
1153 int i;
1154
1155 /* add HT info */
1156 if (sband->ht_cap.ht_supported &&
1157 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1158 sizeof(sband->ht_cap.mcs),
1159 &sband->ht_cap.mcs) ||
1160 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1161 sband->ht_cap.cap) ||
1162 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1163 sband->ht_cap.ampdu_factor) ||
1164 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1165 sband->ht_cap.ampdu_density)))
1166 return -ENOBUFS;
1167
1168 /* add VHT info */
1169 if (sband->vht_cap.vht_supported &&
1170 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1171 sizeof(sband->vht_cap.vht_mcs),
1172 &sband->vht_cap.vht_mcs) ||
1173 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1174 sband->vht_cap.cap)))
1175 return -ENOBUFS;
1176
1177 /* add bitrates */
1178 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1179 if (!nl_rates)
1180 return -ENOBUFS;
1181
1182 for (i = 0; i < sband->n_bitrates; i++) {
1183 nl_rate = nla_nest_start(msg, i);
1184 if (!nl_rate)
1185 return -ENOBUFS;
1186
1187 rate = &sband->bitrates[i];
1188 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1189 rate->bitrate))
1190 return -ENOBUFS;
1191 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1192 nla_put_flag(msg,
1193 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1194 return -ENOBUFS;
1195
1196 nla_nest_end(msg, nl_rate);
1197 }
1198
1199 nla_nest_end(msg, nl_rates);
1200
1201 return 0;
1202 }
1203
1204 static int
1205 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1206 const struct ieee80211_txrx_stypes *mgmt_stypes)
1207 {
1208 u16 stypes;
1209 struct nlattr *nl_ftypes, *nl_ifs;
1210 enum nl80211_iftype ift;
1211 int i;
1212
1213 if (!mgmt_stypes)
1214 return 0;
1215
1216 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1217 if (!nl_ifs)
1218 return -ENOBUFS;
1219
1220 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1221 nl_ftypes = nla_nest_start(msg, ift);
1222 if (!nl_ftypes)
1223 return -ENOBUFS;
1224 i = 0;
1225 stypes = mgmt_stypes[ift].tx;
1226 while (stypes) {
1227 if ((stypes & 1) &&
1228 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1229 (i << 4) | IEEE80211_FTYPE_MGMT))
1230 return -ENOBUFS;
1231 stypes >>= 1;
1232 i++;
1233 }
1234 nla_nest_end(msg, nl_ftypes);
1235 }
1236
1237 nla_nest_end(msg, nl_ifs);
1238
1239 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1240 if (!nl_ifs)
1241 return -ENOBUFS;
1242
1243 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1244 nl_ftypes = nla_nest_start(msg, ift);
1245 if (!nl_ftypes)
1246 return -ENOBUFS;
1247 i = 0;
1248 stypes = mgmt_stypes[ift].rx;
1249 while (stypes) {
1250 if ((stypes & 1) &&
1251 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1252 (i << 4) | IEEE80211_FTYPE_MGMT))
1253 return -ENOBUFS;
1254 stypes >>= 1;
1255 i++;
1256 }
1257 nla_nest_end(msg, nl_ftypes);
1258 }
1259 nla_nest_end(msg, nl_ifs);
1260
1261 return 0;
1262 }
1263
1264 struct nl80211_dump_wiphy_state {
1265 s64 filter_wiphy;
1266 long start;
1267 long split_start, band_start, chan_start;
1268 bool split;
1269 };
1270
1271 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1272 enum nl80211_commands cmd,
1273 struct sk_buff *msg, u32 portid, u32 seq,
1274 int flags, struct nl80211_dump_wiphy_state *state)
1275 {
1276 void *hdr;
1277 struct nlattr *nl_bands, *nl_band;
1278 struct nlattr *nl_freqs, *nl_freq;
1279 struct nlattr *nl_cmds;
1280 enum ieee80211_band band;
1281 struct ieee80211_channel *chan;
1282 int i;
1283 const struct ieee80211_txrx_stypes *mgmt_stypes =
1284 rdev->wiphy.mgmt_stypes;
1285 u32 features;
1286
1287 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1288 if (!hdr)
1289 return -ENOBUFS;
1290
1291 if (WARN_ON(!state))
1292 return -EINVAL;
1293
1294 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1295 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1296 wiphy_name(&rdev->wiphy)) ||
1297 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1298 cfg80211_rdev_list_generation))
1299 goto nla_put_failure;
1300
1301 if (cmd != NL80211_CMD_NEW_WIPHY)
1302 goto finish;
1303
1304 switch (state->split_start) {
1305 case 0:
1306 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1307 rdev->wiphy.retry_short) ||
1308 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1309 rdev->wiphy.retry_long) ||
1310 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1311 rdev->wiphy.frag_threshold) ||
1312 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1313 rdev->wiphy.rts_threshold) ||
1314 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1315 rdev->wiphy.coverage_class) ||
1316 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1317 rdev->wiphy.max_scan_ssids) ||
1318 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1319 rdev->wiphy.max_sched_scan_ssids) ||
1320 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1321 rdev->wiphy.max_scan_ie_len) ||
1322 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1323 rdev->wiphy.max_sched_scan_ie_len) ||
1324 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1325 rdev->wiphy.max_match_sets) ||
1326 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1327 rdev->wiphy.max_sched_scan_plans) ||
1328 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1329 rdev->wiphy.max_sched_scan_plan_interval) ||
1330 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1331 rdev->wiphy.max_sched_scan_plan_iterations))
1332 goto nla_put_failure;
1333
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1335 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1336 goto nla_put_failure;
1337 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1338 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1339 goto nla_put_failure;
1340 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1341 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1342 goto nla_put_failure;
1343 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1344 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1345 goto nla_put_failure;
1346 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1347 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1348 goto nla_put_failure;
1349 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1350 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1351 goto nla_put_failure;
1352 state->split_start++;
1353 if (state->split)
1354 break;
1355 case 1:
1356 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1357 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1358 rdev->wiphy.cipher_suites))
1359 goto nla_put_failure;
1360
1361 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1362 rdev->wiphy.max_num_pmkids))
1363 goto nla_put_failure;
1364
1365 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1366 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1367 goto nla_put_failure;
1368
1369 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1370 rdev->wiphy.available_antennas_tx) ||
1371 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1372 rdev->wiphy.available_antennas_rx))
1373 goto nla_put_failure;
1374
1375 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1376 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1377 rdev->wiphy.probe_resp_offload))
1378 goto nla_put_failure;
1379
1380 if ((rdev->wiphy.available_antennas_tx ||
1381 rdev->wiphy.available_antennas_rx) &&
1382 rdev->ops->get_antenna) {
1383 u32 tx_ant = 0, rx_ant = 0;
1384 int res;
1385 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1386 if (!res) {
1387 if (nla_put_u32(msg,
1388 NL80211_ATTR_WIPHY_ANTENNA_TX,
1389 tx_ant) ||
1390 nla_put_u32(msg,
1391 NL80211_ATTR_WIPHY_ANTENNA_RX,
1392 rx_ant))
1393 goto nla_put_failure;
1394 }
1395 }
1396
1397 state->split_start++;
1398 if (state->split)
1399 break;
1400 case 2:
1401 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1402 rdev->wiphy.interface_modes))
1403 goto nla_put_failure;
1404 state->split_start++;
1405 if (state->split)
1406 break;
1407 case 3:
1408 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1409 if (!nl_bands)
1410 goto nla_put_failure;
1411
1412 for (band = state->band_start;
1413 band < IEEE80211_NUM_BANDS; band++) {
1414 struct ieee80211_supported_band *sband;
1415
1416 sband = rdev->wiphy.bands[band];
1417
1418 if (!sband)
1419 continue;
1420
1421 nl_band = nla_nest_start(msg, band);
1422 if (!nl_band)
1423 goto nla_put_failure;
1424
1425 switch (state->chan_start) {
1426 case 0:
1427 if (nl80211_send_band_rateinfo(msg, sband))
1428 goto nla_put_failure;
1429 state->chan_start++;
1430 if (state->split)
1431 break;
1432 default:
1433 /* add frequencies */
1434 nl_freqs = nla_nest_start(
1435 msg, NL80211_BAND_ATTR_FREQS);
1436 if (!nl_freqs)
1437 goto nla_put_failure;
1438
1439 for (i = state->chan_start - 1;
1440 i < sband->n_channels;
1441 i++) {
1442 nl_freq = nla_nest_start(msg, i);
1443 if (!nl_freq)
1444 goto nla_put_failure;
1445
1446 chan = &sband->channels[i];
1447
1448 if (nl80211_msg_put_channel(
1449 msg, chan,
1450 state->split))
1451 goto nla_put_failure;
1452
1453 nla_nest_end(msg, nl_freq);
1454 if (state->split)
1455 break;
1456 }
1457 if (i < sband->n_channels)
1458 state->chan_start = i + 2;
1459 else
1460 state->chan_start = 0;
1461 nla_nest_end(msg, nl_freqs);
1462 }
1463
1464 nla_nest_end(msg, nl_band);
1465
1466 if (state->split) {
1467 /* start again here */
1468 if (state->chan_start)
1469 band--;
1470 break;
1471 }
1472 }
1473 nla_nest_end(msg, nl_bands);
1474
1475 if (band < IEEE80211_NUM_BANDS)
1476 state->band_start = band + 1;
1477 else
1478 state->band_start = 0;
1479
1480 /* if bands & channels are done, continue outside */
1481 if (state->band_start == 0 && state->chan_start == 0)
1482 state->split_start++;
1483 if (state->split)
1484 break;
1485 case 4:
1486 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1487 if (!nl_cmds)
1488 goto nla_put_failure;
1489
1490 i = 0;
1491 #define CMD(op, n) \
1492 do { \
1493 if (rdev->ops->op) { \
1494 i++; \
1495 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1496 goto nla_put_failure; \
1497 } \
1498 } while (0)
1499
1500 CMD(add_virtual_intf, NEW_INTERFACE);
1501 CMD(change_virtual_intf, SET_INTERFACE);
1502 CMD(add_key, NEW_KEY);
1503 CMD(start_ap, START_AP);
1504 CMD(add_station, NEW_STATION);
1505 CMD(add_mpath, NEW_MPATH);
1506 CMD(update_mesh_config, SET_MESH_CONFIG);
1507 CMD(change_bss, SET_BSS);
1508 CMD(auth, AUTHENTICATE);
1509 CMD(assoc, ASSOCIATE);
1510 CMD(deauth, DEAUTHENTICATE);
1511 CMD(disassoc, DISASSOCIATE);
1512 CMD(join_ibss, JOIN_IBSS);
1513 CMD(join_mesh, JOIN_MESH);
1514 CMD(set_pmksa, SET_PMKSA);
1515 CMD(del_pmksa, DEL_PMKSA);
1516 CMD(flush_pmksa, FLUSH_PMKSA);
1517 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1518 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1519 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1520 CMD(mgmt_tx, FRAME);
1521 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1522 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1523 i++;
1524 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1525 goto nla_put_failure;
1526 }
1527 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1528 rdev->ops->join_mesh) {
1529 i++;
1530 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1531 goto nla_put_failure;
1532 }
1533 CMD(set_wds_peer, SET_WDS_PEER);
1534 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1535 CMD(tdls_mgmt, TDLS_MGMT);
1536 CMD(tdls_oper, TDLS_OPER);
1537 }
1538 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1539 CMD(sched_scan_start, START_SCHED_SCAN);
1540 CMD(probe_client, PROBE_CLIENT);
1541 CMD(set_noack_map, SET_NOACK_MAP);
1542 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1543 i++;
1544 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1545 goto nla_put_failure;
1546 }
1547 CMD(start_p2p_device, START_P2P_DEVICE);
1548 CMD(set_mcast_rate, SET_MCAST_RATE);
1549 #ifdef CONFIG_NL80211_TESTMODE
1550 CMD(testmode_cmd, TESTMODE);
1551 #endif
1552 if (state->split) {
1553 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1554 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1555 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1556 CMD(channel_switch, CHANNEL_SWITCH);
1557 CMD(set_qos_map, SET_QOS_MAP);
1558 if (rdev->wiphy.features &
1559 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1560 CMD(add_tx_ts, ADD_TX_TS);
1561 }
1562 /* add into the if now */
1563 #undef CMD
1564
1565 if (rdev->ops->connect || rdev->ops->auth) {
1566 i++;
1567 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1568 goto nla_put_failure;
1569 }
1570
1571 if (rdev->ops->disconnect || rdev->ops->deauth) {
1572 i++;
1573 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1574 goto nla_put_failure;
1575 }
1576
1577 nla_nest_end(msg, nl_cmds);
1578 state->split_start++;
1579 if (state->split)
1580 break;
1581 case 5:
1582 if (rdev->ops->remain_on_channel &&
1583 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1584 nla_put_u32(msg,
1585 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1586 rdev->wiphy.max_remain_on_channel_duration))
1587 goto nla_put_failure;
1588
1589 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1590 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1591 goto nla_put_failure;
1592
1593 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1594 goto nla_put_failure;
1595 state->split_start++;
1596 if (state->split)
1597 break;
1598 case 6:
1599 #ifdef CONFIG_PM
1600 if (nl80211_send_wowlan(msg, rdev, state->split))
1601 goto nla_put_failure;
1602 state->split_start++;
1603 if (state->split)
1604 break;
1605 #else
1606 state->split_start++;
1607 #endif
1608 case 7:
1609 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1610 rdev->wiphy.software_iftypes))
1611 goto nla_put_failure;
1612
1613 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1614 state->split))
1615 goto nla_put_failure;
1616
1617 state->split_start++;
1618 if (state->split)
1619 break;
1620 case 8:
1621 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1622 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1623 rdev->wiphy.ap_sme_capa))
1624 goto nla_put_failure;
1625
1626 features = rdev->wiphy.features;
1627 /*
1628 * We can only add the per-channel limit information if the
1629 * dump is split, otherwise it makes it too big. Therefore
1630 * only advertise it in that case.
1631 */
1632 if (state->split)
1633 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1634 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1635 goto nla_put_failure;
1636
1637 if (rdev->wiphy.ht_capa_mod_mask &&
1638 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1639 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1640 rdev->wiphy.ht_capa_mod_mask))
1641 goto nla_put_failure;
1642
1643 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1644 rdev->wiphy.max_acl_mac_addrs &&
1645 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1646 rdev->wiphy.max_acl_mac_addrs))
1647 goto nla_put_failure;
1648
1649 /*
1650 * Any information below this point is only available to
1651 * applications that can deal with it being split. This
1652 * helps ensure that newly added capabilities don't break
1653 * older tools by overrunning their buffers.
1654 *
1655 * We still increment split_start so that in the split
1656 * case we'll continue with more data in the next round,
1657 * but break unconditionally so unsplit data stops here.
1658 */
1659 state->split_start++;
1660 break;
1661 case 9:
1662 if (rdev->wiphy.extended_capabilities &&
1663 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1664 rdev->wiphy.extended_capabilities_len,
1665 rdev->wiphy.extended_capabilities) ||
1666 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1667 rdev->wiphy.extended_capabilities_len,
1668 rdev->wiphy.extended_capabilities_mask)))
1669 goto nla_put_failure;
1670
1671 if (rdev->wiphy.vht_capa_mod_mask &&
1672 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1673 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1674 rdev->wiphy.vht_capa_mod_mask))
1675 goto nla_put_failure;
1676
1677 state->split_start++;
1678 break;
1679 case 10:
1680 if (nl80211_send_coalesce(msg, rdev))
1681 goto nla_put_failure;
1682
1683 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1684 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1685 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1686 goto nla_put_failure;
1687
1688 if (rdev->wiphy.max_ap_assoc_sta &&
1689 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1690 rdev->wiphy.max_ap_assoc_sta))
1691 goto nla_put_failure;
1692
1693 state->split_start++;
1694 break;
1695 case 11:
1696 if (rdev->wiphy.n_vendor_commands) {
1697 const struct nl80211_vendor_cmd_info *info;
1698 struct nlattr *nested;
1699
1700 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1701 if (!nested)
1702 goto nla_put_failure;
1703
1704 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1705 info = &rdev->wiphy.vendor_commands[i].info;
1706 if (nla_put(msg, i + 1, sizeof(*info), info))
1707 goto nla_put_failure;
1708 }
1709 nla_nest_end(msg, nested);
1710 }
1711
1712 if (rdev->wiphy.n_vendor_events) {
1713 const struct nl80211_vendor_cmd_info *info;
1714 struct nlattr *nested;
1715
1716 nested = nla_nest_start(msg,
1717 NL80211_ATTR_VENDOR_EVENTS);
1718 if (!nested)
1719 goto nla_put_failure;
1720
1721 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1722 info = &rdev->wiphy.vendor_events[i];
1723 if (nla_put(msg, i + 1, sizeof(*info), info))
1724 goto nla_put_failure;
1725 }
1726 nla_nest_end(msg, nested);
1727 }
1728 state->split_start++;
1729 break;
1730 case 12:
1731 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1732 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1733 rdev->wiphy.max_num_csa_counters))
1734 goto nla_put_failure;
1735
1736 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1737 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1738 goto nla_put_failure;
1739
1740 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1741 sizeof(rdev->wiphy.ext_features),
1742 rdev->wiphy.ext_features))
1743 goto nla_put_failure;
1744
1745 if (rdev->wiphy.bss_select_support) {
1746 struct nlattr *nested;
1747 u32 bss_select_support = rdev->wiphy.bss_select_support;
1748
1749 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1750 if (!nested)
1751 goto nla_put_failure;
1752
1753 i = 0;
1754 while (bss_select_support) {
1755 if ((bss_select_support & 1) &&
1756 nla_put_flag(msg, i))
1757 goto nla_put_failure;
1758 i++;
1759 bss_select_support >>= 1;
1760 }
1761 nla_nest_end(msg, nested);
1762 }
1763
1764 /* done */
1765 state->split_start = 0;
1766 break;
1767 }
1768 finish:
1769 genlmsg_end(msg, hdr);
1770 return 0;
1771
1772 nla_put_failure:
1773 genlmsg_cancel(msg, hdr);
1774 return -EMSGSIZE;
1775 }
1776
1777 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1778 struct netlink_callback *cb,
1779 struct nl80211_dump_wiphy_state *state)
1780 {
1781 struct nlattr **tb = nl80211_fam.attrbuf;
1782 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1783 tb, nl80211_fam.maxattr, nl80211_policy);
1784 /* ignore parse errors for backward compatibility */
1785 if (ret)
1786 return 0;
1787
1788 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1789 if (tb[NL80211_ATTR_WIPHY])
1790 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1791 if (tb[NL80211_ATTR_WDEV])
1792 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1793 if (tb[NL80211_ATTR_IFINDEX]) {
1794 struct net_device *netdev;
1795 struct cfg80211_registered_device *rdev;
1796 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1797
1798 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1799 if (!netdev)
1800 return -ENODEV;
1801 if (netdev->ieee80211_ptr) {
1802 rdev = wiphy_to_rdev(
1803 netdev->ieee80211_ptr->wiphy);
1804 state->filter_wiphy = rdev->wiphy_idx;
1805 }
1806 }
1807
1808 return 0;
1809 }
1810
1811 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1812 {
1813 int idx = 0, ret;
1814 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1815 struct cfg80211_registered_device *rdev;
1816
1817 rtnl_lock();
1818 if (!state) {
1819 state = kzalloc(sizeof(*state), GFP_KERNEL);
1820 if (!state) {
1821 rtnl_unlock();
1822 return -ENOMEM;
1823 }
1824 state->filter_wiphy = -1;
1825 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1826 if (ret) {
1827 kfree(state);
1828 rtnl_unlock();
1829 return ret;
1830 }
1831 cb->args[0] = (long)state;
1832 }
1833
1834 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1835 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1836 continue;
1837 if (++idx <= state->start)
1838 continue;
1839 if (state->filter_wiphy != -1 &&
1840 state->filter_wiphy != rdev->wiphy_idx)
1841 continue;
1842 /* attempt to fit multiple wiphy data chunks into the skb */
1843 do {
1844 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1845 skb,
1846 NETLINK_CB(cb->skb).portid,
1847 cb->nlh->nlmsg_seq,
1848 NLM_F_MULTI, state);
1849 if (ret < 0) {
1850 /*
1851 * If sending the wiphy data didn't fit (ENOBUFS
1852 * or EMSGSIZE returned), this SKB is still
1853 * empty (so it's not too big because another
1854 * wiphy dataset is already in the skb) and
1855 * we've not tried to adjust the dump allocation
1856 * yet ... then adjust the alloc size to be
1857 * bigger, and return 1 but with the empty skb.
1858 * This results in an empty message being RX'ed
1859 * in userspace, but that is ignored.
1860 *
1861 * We can then retry with the larger buffer.
1862 */
1863 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1864 !skb->len && !state->split &&
1865 cb->min_dump_alloc < 4096) {
1866 cb->min_dump_alloc = 4096;
1867 state->split_start = 0;
1868 rtnl_unlock();
1869 return 1;
1870 }
1871 idx--;
1872 break;
1873 }
1874 } while (state->split_start > 0);
1875 break;
1876 }
1877 rtnl_unlock();
1878
1879 state->start = idx;
1880
1881 return skb->len;
1882 }
1883
1884 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1885 {
1886 kfree((void *)cb->args[0]);
1887 return 0;
1888 }
1889
1890 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1891 {
1892 struct sk_buff *msg;
1893 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1894 struct nl80211_dump_wiphy_state state = {};
1895
1896 msg = nlmsg_new(4096, GFP_KERNEL);
1897 if (!msg)
1898 return -ENOMEM;
1899
1900 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1901 info->snd_portid, info->snd_seq, 0,
1902 &state) < 0) {
1903 nlmsg_free(msg);
1904 return -ENOBUFS;
1905 }
1906
1907 return genlmsg_reply(msg, info);
1908 }
1909
1910 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1911 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1912 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1913 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1914 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1915 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1916 };
1917
1918 static int parse_txq_params(struct nlattr *tb[],
1919 struct ieee80211_txq_params *txq_params)
1920 {
1921 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1922 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1923 !tb[NL80211_TXQ_ATTR_AIFS])
1924 return -EINVAL;
1925
1926 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1927 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1928 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1929 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1930 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1931
1932 if (txq_params->ac >= NL80211_NUM_ACS)
1933 return -EINVAL;
1934
1935 return 0;
1936 }
1937
1938 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1939 {
1940 /*
1941 * You can only set the channel explicitly for WDS interfaces,
1942 * all others have their channel managed via their respective
1943 * "establish a connection" command (connect, join, ...)
1944 *
1945 * For AP/GO and mesh mode, the channel can be set with the
1946 * channel userspace API, but is only stored and passed to the
1947 * low-level driver when the AP starts or the mesh is joined.
1948 * This is for backward compatibility, userspace can also give
1949 * the channel in the start-ap or join-mesh commands instead.
1950 *
1951 * Monitors are special as they are normally slaved to
1952 * whatever else is going on, so they have their own special
1953 * operation to set the monitor channel if possible.
1954 */
1955 return !wdev ||
1956 wdev->iftype == NL80211_IFTYPE_AP ||
1957 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1958 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1959 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1960 }
1961
1962 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1963 struct genl_info *info,
1964 struct cfg80211_chan_def *chandef)
1965 {
1966 u32 control_freq;
1967
1968 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1969 return -EINVAL;
1970
1971 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1972
1973 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1974 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1975 chandef->center_freq1 = control_freq;
1976 chandef->center_freq2 = 0;
1977
1978 /* Primary channel not allowed */
1979 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1980 return -EINVAL;
1981
1982 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1983 enum nl80211_channel_type chantype;
1984
1985 chantype = nla_get_u32(
1986 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1987
1988 switch (chantype) {
1989 case NL80211_CHAN_NO_HT:
1990 case NL80211_CHAN_HT20:
1991 case NL80211_CHAN_HT40PLUS:
1992 case NL80211_CHAN_HT40MINUS:
1993 cfg80211_chandef_create(chandef, chandef->chan,
1994 chantype);
1995 break;
1996 default:
1997 return -EINVAL;
1998 }
1999 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2000 chandef->width =
2001 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2002 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2003 chandef->center_freq1 =
2004 nla_get_u32(
2005 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2006 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2007 chandef->center_freq2 =
2008 nla_get_u32(
2009 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2010 }
2011
2012 if (!cfg80211_chandef_valid(chandef))
2013 return -EINVAL;
2014
2015 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2016 IEEE80211_CHAN_DISABLED))
2017 return -EINVAL;
2018
2019 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2020 chandef->width == NL80211_CHAN_WIDTH_10) &&
2021 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2022 return -EINVAL;
2023
2024 return 0;
2025 }
2026
2027 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2028 struct net_device *dev,
2029 struct genl_info *info)
2030 {
2031 struct cfg80211_chan_def chandef;
2032 int result;
2033 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2034 struct wireless_dev *wdev = NULL;
2035
2036 if (dev)
2037 wdev = dev->ieee80211_ptr;
2038 if (!nl80211_can_set_dev_channel(wdev))
2039 return -EOPNOTSUPP;
2040 if (wdev)
2041 iftype = wdev->iftype;
2042
2043 result = nl80211_parse_chandef(rdev, info, &chandef);
2044 if (result)
2045 return result;
2046
2047 switch (iftype) {
2048 case NL80211_IFTYPE_AP:
2049 case NL80211_IFTYPE_P2P_GO:
2050 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2051 iftype)) {
2052 result = -EINVAL;
2053 break;
2054 }
2055 if (wdev->beacon_interval) {
2056 if (!dev || !rdev->ops->set_ap_chanwidth ||
2057 !(rdev->wiphy.features &
2058 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2059 result = -EBUSY;
2060 break;
2061 }
2062
2063 /* Only allow dynamic channel width changes */
2064 if (chandef.chan != wdev->preset_chandef.chan) {
2065 result = -EBUSY;
2066 break;
2067 }
2068 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2069 if (result)
2070 break;
2071 }
2072 wdev->preset_chandef = chandef;
2073 result = 0;
2074 break;
2075 case NL80211_IFTYPE_MESH_POINT:
2076 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2077 break;
2078 case NL80211_IFTYPE_MONITOR:
2079 result = cfg80211_set_monitor_channel(rdev, &chandef);
2080 break;
2081 default:
2082 result = -EINVAL;
2083 }
2084
2085 return result;
2086 }
2087
2088 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2089 {
2090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2091 struct net_device *netdev = info->user_ptr[1];
2092
2093 return __nl80211_set_channel(rdev, netdev, info);
2094 }
2095
2096 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2097 {
2098 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2099 struct net_device *dev = info->user_ptr[1];
2100 struct wireless_dev *wdev = dev->ieee80211_ptr;
2101 const u8 *bssid;
2102
2103 if (!info->attrs[NL80211_ATTR_MAC])
2104 return -EINVAL;
2105
2106 if (netif_running(dev))
2107 return -EBUSY;
2108
2109 if (!rdev->ops->set_wds_peer)
2110 return -EOPNOTSUPP;
2111
2112 if (wdev->iftype != NL80211_IFTYPE_WDS)
2113 return -EOPNOTSUPP;
2114
2115 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2116 return rdev_set_wds_peer(rdev, dev, bssid);
2117 }
2118
2119
2120 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2121 {
2122 struct cfg80211_registered_device *rdev;
2123 struct net_device *netdev = NULL;
2124 struct wireless_dev *wdev;
2125 int result = 0, rem_txq_params = 0;
2126 struct nlattr *nl_txq_params;
2127 u32 changed;
2128 u8 retry_short = 0, retry_long = 0;
2129 u32 frag_threshold = 0, rts_threshold = 0;
2130 u8 coverage_class = 0;
2131
2132 ASSERT_RTNL();
2133
2134 /*
2135 * Try to find the wiphy and netdev. Normally this
2136 * function shouldn't need the netdev, but this is
2137 * done for backward compatibility -- previously
2138 * setting the channel was done per wiphy, but now
2139 * it is per netdev. Previous userland like hostapd
2140 * also passed a netdev to set_wiphy, so that it is
2141 * possible to let that go to the right netdev!
2142 */
2143
2144 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2145 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2146
2147 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2148 if (netdev && netdev->ieee80211_ptr)
2149 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2150 else
2151 netdev = NULL;
2152 }
2153
2154 if (!netdev) {
2155 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2156 info->attrs);
2157 if (IS_ERR(rdev))
2158 return PTR_ERR(rdev);
2159 wdev = NULL;
2160 netdev = NULL;
2161 result = 0;
2162 } else
2163 wdev = netdev->ieee80211_ptr;
2164
2165 /*
2166 * end workaround code, by now the rdev is available
2167 * and locked, and wdev may or may not be NULL.
2168 */
2169
2170 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2171 result = cfg80211_dev_rename(
2172 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2173
2174 if (result)
2175 return result;
2176
2177 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2178 struct ieee80211_txq_params txq_params;
2179 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2180
2181 if (!rdev->ops->set_txq_params)
2182 return -EOPNOTSUPP;
2183
2184 if (!netdev)
2185 return -EINVAL;
2186
2187 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2188 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2189 return -EINVAL;
2190
2191 if (!netif_running(netdev))
2192 return -ENETDOWN;
2193
2194 nla_for_each_nested(nl_txq_params,
2195 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2196 rem_txq_params) {
2197 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2198 nla_data(nl_txq_params),
2199 nla_len(nl_txq_params),
2200 txq_params_policy);
2201 if (result)
2202 return result;
2203 result = parse_txq_params(tb, &txq_params);
2204 if (result)
2205 return result;
2206
2207 result = rdev_set_txq_params(rdev, netdev,
2208 &txq_params);
2209 if (result)
2210 return result;
2211 }
2212 }
2213
2214 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2215 result = __nl80211_set_channel(
2216 rdev,
2217 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2218 info);
2219 if (result)
2220 return result;
2221 }
2222
2223 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2224 struct wireless_dev *txp_wdev = wdev;
2225 enum nl80211_tx_power_setting type;
2226 int idx, mbm = 0;
2227
2228 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2229 txp_wdev = NULL;
2230
2231 if (!rdev->ops->set_tx_power)
2232 return -EOPNOTSUPP;
2233
2234 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2235 type = nla_get_u32(info->attrs[idx]);
2236
2237 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2238 (type != NL80211_TX_POWER_AUTOMATIC))
2239 return -EINVAL;
2240
2241 if (type != NL80211_TX_POWER_AUTOMATIC) {
2242 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2243 mbm = nla_get_u32(info->attrs[idx]);
2244 }
2245
2246 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2247 if (result)
2248 return result;
2249 }
2250
2251 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2252 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2253 u32 tx_ant, rx_ant;
2254 if ((!rdev->wiphy.available_antennas_tx &&
2255 !rdev->wiphy.available_antennas_rx) ||
2256 !rdev->ops->set_antenna)
2257 return -EOPNOTSUPP;
2258
2259 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2260 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2261
2262 /* reject antenna configurations which don't match the
2263 * available antenna masks, except for the "all" mask */
2264 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2265 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2266 return -EINVAL;
2267
2268 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2269 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2270
2271 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2272 if (result)
2273 return result;
2274 }
2275
2276 changed = 0;
2277
2278 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2279 retry_short = nla_get_u8(
2280 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2281 if (retry_short == 0)
2282 return -EINVAL;
2283
2284 changed |= WIPHY_PARAM_RETRY_SHORT;
2285 }
2286
2287 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2288 retry_long = nla_get_u8(
2289 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2290 if (retry_long == 0)
2291 return -EINVAL;
2292
2293 changed |= WIPHY_PARAM_RETRY_LONG;
2294 }
2295
2296 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2297 frag_threshold = nla_get_u32(
2298 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2299 if (frag_threshold < 256)
2300 return -EINVAL;
2301
2302 if (frag_threshold != (u32) -1) {
2303 /*
2304 * Fragments (apart from the last one) are required to
2305 * have even length. Make the fragmentation code
2306 * simpler by stripping LSB should someone try to use
2307 * odd threshold value.
2308 */
2309 frag_threshold &= ~0x1;
2310 }
2311 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2312 }
2313
2314 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2315 rts_threshold = nla_get_u32(
2316 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2317 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2318 }
2319
2320 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2321 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2322 return -EINVAL;
2323
2324 coverage_class = nla_get_u8(
2325 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2326 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2327 }
2328
2329 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2330 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2331 return -EOPNOTSUPP;
2332
2333 changed |= WIPHY_PARAM_DYN_ACK;
2334 }
2335
2336 if (changed) {
2337 u8 old_retry_short, old_retry_long;
2338 u32 old_frag_threshold, old_rts_threshold;
2339 u8 old_coverage_class;
2340
2341 if (!rdev->ops->set_wiphy_params)
2342 return -EOPNOTSUPP;
2343
2344 old_retry_short = rdev->wiphy.retry_short;
2345 old_retry_long = rdev->wiphy.retry_long;
2346 old_frag_threshold = rdev->wiphy.frag_threshold;
2347 old_rts_threshold = rdev->wiphy.rts_threshold;
2348 old_coverage_class = rdev->wiphy.coverage_class;
2349
2350 if (changed & WIPHY_PARAM_RETRY_SHORT)
2351 rdev->wiphy.retry_short = retry_short;
2352 if (changed & WIPHY_PARAM_RETRY_LONG)
2353 rdev->wiphy.retry_long = retry_long;
2354 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2355 rdev->wiphy.frag_threshold = frag_threshold;
2356 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2357 rdev->wiphy.rts_threshold = rts_threshold;
2358 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2359 rdev->wiphy.coverage_class = coverage_class;
2360
2361 result = rdev_set_wiphy_params(rdev, changed);
2362 if (result) {
2363 rdev->wiphy.retry_short = old_retry_short;
2364 rdev->wiphy.retry_long = old_retry_long;
2365 rdev->wiphy.frag_threshold = old_frag_threshold;
2366 rdev->wiphy.rts_threshold = old_rts_threshold;
2367 rdev->wiphy.coverage_class = old_coverage_class;
2368 return result;
2369 }
2370 }
2371 return 0;
2372 }
2373
2374 static inline u64 wdev_id(struct wireless_dev *wdev)
2375 {
2376 return (u64)wdev->identifier |
2377 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2378 }
2379
2380 static int nl80211_send_chandef(struct sk_buff *msg,
2381 const struct cfg80211_chan_def *chandef)
2382 {
2383 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2384 return -EINVAL;
2385
2386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2387 chandef->chan->center_freq))
2388 return -ENOBUFS;
2389 switch (chandef->width) {
2390 case NL80211_CHAN_WIDTH_20_NOHT:
2391 case NL80211_CHAN_WIDTH_20:
2392 case NL80211_CHAN_WIDTH_40:
2393 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2394 cfg80211_get_chandef_type(chandef)))
2395 return -ENOBUFS;
2396 break;
2397 default:
2398 break;
2399 }
2400 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2401 return -ENOBUFS;
2402 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2403 return -ENOBUFS;
2404 if (chandef->center_freq2 &&
2405 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2406 return -ENOBUFS;
2407 return 0;
2408 }
2409
2410 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2411 struct cfg80211_registered_device *rdev,
2412 struct wireless_dev *wdev, bool removal)
2413 {
2414 struct net_device *dev = wdev->netdev;
2415 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2416 void *hdr;
2417
2418 if (removal)
2419 cmd = NL80211_CMD_DEL_INTERFACE;
2420
2421 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2422 if (!hdr)
2423 return -1;
2424
2425 if (dev &&
2426 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2427 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2428 goto nla_put_failure;
2429
2430 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2431 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2432 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2433 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2434 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2435 rdev->devlist_generation ^
2436 (cfg80211_rdev_list_generation << 2)))
2437 goto nla_put_failure;
2438
2439 if (rdev->ops->get_channel) {
2440 int ret;
2441 struct cfg80211_chan_def chandef;
2442
2443 ret = rdev_get_channel(rdev, wdev, &chandef);
2444 if (ret == 0) {
2445 if (nl80211_send_chandef(msg, &chandef))
2446 goto nla_put_failure;
2447 }
2448 }
2449
2450 if (rdev->ops->get_tx_power) {
2451 int dbm, ret;
2452
2453 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2454 if (ret == 0 &&
2455 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2456 DBM_TO_MBM(dbm)))
2457 goto nla_put_failure;
2458 }
2459
2460 if (wdev->ssid_len) {
2461 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2462 goto nla_put_failure;
2463 }
2464
2465 genlmsg_end(msg, hdr);
2466 return 0;
2467
2468 nla_put_failure:
2469 genlmsg_cancel(msg, hdr);
2470 return -EMSGSIZE;
2471 }
2472
2473 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2474 {
2475 int wp_idx = 0;
2476 int if_idx = 0;
2477 int wp_start = cb->args[0];
2478 int if_start = cb->args[1];
2479 struct cfg80211_registered_device *rdev;
2480 struct wireless_dev *wdev;
2481
2482 rtnl_lock();
2483 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2484 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2485 continue;
2486 if (wp_idx < wp_start) {
2487 wp_idx++;
2488 continue;
2489 }
2490 if_idx = 0;
2491
2492 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2493 if (if_idx < if_start) {
2494 if_idx++;
2495 continue;
2496 }
2497 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2498 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2499 rdev, wdev, false) < 0) {
2500 goto out;
2501 }
2502 if_idx++;
2503 }
2504
2505 wp_idx++;
2506 }
2507 out:
2508 rtnl_unlock();
2509
2510 cb->args[0] = wp_idx;
2511 cb->args[1] = if_idx;
2512
2513 return skb->len;
2514 }
2515
2516 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2517 {
2518 struct sk_buff *msg;
2519 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2520 struct wireless_dev *wdev = info->user_ptr[1];
2521
2522 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2523 if (!msg)
2524 return -ENOMEM;
2525
2526 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2527 rdev, wdev, false) < 0) {
2528 nlmsg_free(msg);
2529 return -ENOBUFS;
2530 }
2531
2532 return genlmsg_reply(msg, info);
2533 }
2534
2535 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2536 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2537 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2538 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2539 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2540 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2541 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2542 };
2543
2544 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2545 {
2546 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2547 int flag;
2548
2549 *mntrflags = 0;
2550
2551 if (!nla)
2552 return -EINVAL;
2553
2554 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2555 nla, mntr_flags_policy))
2556 return -EINVAL;
2557
2558 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2559 if (flags[flag])
2560 *mntrflags |= (1<<flag);
2561
2562 return 0;
2563 }
2564
2565 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2566 struct net_device *netdev, u8 use_4addr,
2567 enum nl80211_iftype iftype)
2568 {
2569 if (!use_4addr) {
2570 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2571 return -EBUSY;
2572 return 0;
2573 }
2574
2575 switch (iftype) {
2576 case NL80211_IFTYPE_AP_VLAN:
2577 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2578 return 0;
2579 break;
2580 case NL80211_IFTYPE_STATION:
2581 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2582 return 0;
2583 break;
2584 default:
2585 break;
2586 }
2587
2588 return -EOPNOTSUPP;
2589 }
2590
2591 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2592 {
2593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2594 struct vif_params params;
2595 int err;
2596 enum nl80211_iftype otype, ntype;
2597 struct net_device *dev = info->user_ptr[1];
2598 u32 _flags, *flags = NULL;
2599 bool change = false;
2600
2601 memset(&params, 0, sizeof(params));
2602
2603 otype = ntype = dev->ieee80211_ptr->iftype;
2604
2605 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2606 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2607 if (otype != ntype)
2608 change = true;
2609 if (ntype > NL80211_IFTYPE_MAX)
2610 return -EINVAL;
2611 }
2612
2613 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2614 struct wireless_dev *wdev = dev->ieee80211_ptr;
2615
2616 if (ntype != NL80211_IFTYPE_MESH_POINT)
2617 return -EINVAL;
2618 if (netif_running(dev))
2619 return -EBUSY;
2620
2621 wdev_lock(wdev);
2622 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2623 IEEE80211_MAX_MESH_ID_LEN);
2624 wdev->mesh_id_up_len =
2625 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2626 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2627 wdev->mesh_id_up_len);
2628 wdev_unlock(wdev);
2629 }
2630
2631 if (info->attrs[NL80211_ATTR_4ADDR]) {
2632 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2633 change = true;
2634 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2635 if (err)
2636 return err;
2637 } else {
2638 params.use_4addr = -1;
2639 }
2640
2641 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2642 if (ntype != NL80211_IFTYPE_MONITOR)
2643 return -EINVAL;
2644 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2645 &_flags);
2646 if (err)
2647 return err;
2648
2649 flags = &_flags;
2650 change = true;
2651 }
2652
2653 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2654 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2655 return -EOPNOTSUPP;
2656
2657 if (change)
2658 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2659 else
2660 err = 0;
2661
2662 if (!err && params.use_4addr != -1)
2663 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2664
2665 return err;
2666 }
2667
2668 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2669 {
2670 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2671 struct vif_params params;
2672 struct wireless_dev *wdev;
2673 struct sk_buff *msg, *event;
2674 int err;
2675 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2676 u32 flags;
2677
2678 /* to avoid failing a new interface creation due to pending removal */
2679 cfg80211_destroy_ifaces(rdev);
2680
2681 memset(&params, 0, sizeof(params));
2682
2683 if (!info->attrs[NL80211_ATTR_IFNAME])
2684 return -EINVAL;
2685
2686 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2687 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2688 if (type > NL80211_IFTYPE_MAX)
2689 return -EINVAL;
2690 }
2691
2692 if (!rdev->ops->add_virtual_intf ||
2693 !(rdev->wiphy.interface_modes & (1 << type)))
2694 return -EOPNOTSUPP;
2695
2696 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2697 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2698 info->attrs[NL80211_ATTR_MAC]) {
2699 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2700 ETH_ALEN);
2701 if (!is_valid_ether_addr(params.macaddr))
2702 return -EADDRNOTAVAIL;
2703 }
2704
2705 if (info->attrs[NL80211_ATTR_4ADDR]) {
2706 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2707 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2708 if (err)
2709 return err;
2710 }
2711
2712 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2713 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2714 &flags);
2715
2716 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2717 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2718 return -EOPNOTSUPP;
2719
2720 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2721 if (!msg)
2722 return -ENOMEM;
2723
2724 wdev = rdev_add_virtual_intf(rdev,
2725 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2726 NET_NAME_USER, type, err ? NULL : &flags,
2727 &params);
2728 if (WARN_ON(!wdev)) {
2729 nlmsg_free(msg);
2730 return -EPROTO;
2731 } else if (IS_ERR(wdev)) {
2732 nlmsg_free(msg);
2733 return PTR_ERR(wdev);
2734 }
2735
2736 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2737 wdev->owner_nlportid = info->snd_portid;
2738
2739 switch (type) {
2740 case NL80211_IFTYPE_MESH_POINT:
2741 if (!info->attrs[NL80211_ATTR_MESH_ID])
2742 break;
2743 wdev_lock(wdev);
2744 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2745 IEEE80211_MAX_MESH_ID_LEN);
2746 wdev->mesh_id_up_len =
2747 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2748 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2749 wdev->mesh_id_up_len);
2750 wdev_unlock(wdev);
2751 break;
2752 case NL80211_IFTYPE_P2P_DEVICE:
2753 /*
2754 * P2P Device doesn't have a netdev, so doesn't go
2755 * through the netdev notifier and must be added here
2756 */
2757 mutex_init(&wdev->mtx);
2758 INIT_LIST_HEAD(&wdev->event_list);
2759 spin_lock_init(&wdev->event_lock);
2760 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2761 spin_lock_init(&wdev->mgmt_registrations_lock);
2762
2763 wdev->identifier = ++rdev->wdev_id;
2764 list_add_rcu(&wdev->list, &rdev->wdev_list);
2765 rdev->devlist_generation++;
2766 break;
2767 default:
2768 break;
2769 }
2770
2771 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2772 rdev, wdev, false) < 0) {
2773 nlmsg_free(msg);
2774 return -ENOBUFS;
2775 }
2776
2777 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2778 if (event) {
2779 if (nl80211_send_iface(event, 0, 0, 0,
2780 rdev, wdev, false) < 0) {
2781 nlmsg_free(event);
2782 goto out;
2783 }
2784
2785 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2786 event, 0, NL80211_MCGRP_CONFIG,
2787 GFP_KERNEL);
2788 }
2789
2790 out:
2791 return genlmsg_reply(msg, info);
2792 }
2793
2794 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2795 {
2796 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2797 struct wireless_dev *wdev = info->user_ptr[1];
2798 struct sk_buff *msg;
2799 int status;
2800
2801 if (!rdev->ops->del_virtual_intf)
2802 return -EOPNOTSUPP;
2803
2804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2805 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2806 nlmsg_free(msg);
2807 msg = NULL;
2808 }
2809
2810 /*
2811 * If we remove a wireless device without a netdev then clear
2812 * user_ptr[1] so that nl80211_post_doit won't dereference it
2813 * to check if it needs to do dev_put(). Otherwise it crashes
2814 * since the wdev has been freed, unlike with a netdev where
2815 * we need the dev_put() for the netdev to really be freed.
2816 */
2817 if (!wdev->netdev)
2818 info->user_ptr[1] = NULL;
2819
2820 status = rdev_del_virtual_intf(rdev, wdev);
2821 if (status >= 0 && msg)
2822 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2823 msg, 0, NL80211_MCGRP_CONFIG,
2824 GFP_KERNEL);
2825 else
2826 nlmsg_free(msg);
2827
2828 return status;
2829 }
2830
2831 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2832 {
2833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2834 struct net_device *dev = info->user_ptr[1];
2835 u16 noack_map;
2836
2837 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2838 return -EINVAL;
2839
2840 if (!rdev->ops->set_noack_map)
2841 return -EOPNOTSUPP;
2842
2843 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2844
2845 return rdev_set_noack_map(rdev, dev, noack_map);
2846 }
2847
2848 struct get_key_cookie {
2849 struct sk_buff *msg;
2850 int error;
2851 int idx;
2852 };
2853
2854 static void get_key_callback(void *c, struct key_params *params)
2855 {
2856 struct nlattr *key;
2857 struct get_key_cookie *cookie = c;
2858
2859 if ((params->key &&
2860 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2861 params->key_len, params->key)) ||
2862 (params->seq &&
2863 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2864 params->seq_len, params->seq)) ||
2865 (params->cipher &&
2866 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2867 params->cipher)))
2868 goto nla_put_failure;
2869
2870 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2871 if (!key)
2872 goto nla_put_failure;
2873
2874 if ((params->key &&
2875 nla_put(cookie->msg, NL80211_KEY_DATA,
2876 params->key_len, params->key)) ||
2877 (params->seq &&
2878 nla_put(cookie->msg, NL80211_KEY_SEQ,
2879 params->seq_len, params->seq)) ||
2880 (params->cipher &&
2881 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2882 params->cipher)))
2883 goto nla_put_failure;
2884
2885 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2886 goto nla_put_failure;
2887
2888 nla_nest_end(cookie->msg, key);
2889
2890 return;
2891 nla_put_failure:
2892 cookie->error = 1;
2893 }
2894
2895 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2896 {
2897 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2898 int err;
2899 struct net_device *dev = info->user_ptr[1];
2900 u8 key_idx = 0;
2901 const u8 *mac_addr = NULL;
2902 bool pairwise;
2903 struct get_key_cookie cookie = {
2904 .error = 0,
2905 };
2906 void *hdr;
2907 struct sk_buff *msg;
2908
2909 if (info->attrs[NL80211_ATTR_KEY_IDX])
2910 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2911
2912 if (key_idx > 5)
2913 return -EINVAL;
2914
2915 if (info->attrs[NL80211_ATTR_MAC])
2916 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2917
2918 pairwise = !!mac_addr;
2919 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2920 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2921 if (kt >= NUM_NL80211_KEYTYPES)
2922 return -EINVAL;
2923 if (kt != NL80211_KEYTYPE_GROUP &&
2924 kt != NL80211_KEYTYPE_PAIRWISE)
2925 return -EINVAL;
2926 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2927 }
2928
2929 if (!rdev->ops->get_key)
2930 return -EOPNOTSUPP;
2931
2932 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2933 return -ENOENT;
2934
2935 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2936 if (!msg)
2937 return -ENOMEM;
2938
2939 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2940 NL80211_CMD_NEW_KEY);
2941 if (!hdr)
2942 goto nla_put_failure;
2943
2944 cookie.msg = msg;
2945 cookie.idx = key_idx;
2946
2947 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2948 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2949 goto nla_put_failure;
2950 if (mac_addr &&
2951 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2952 goto nla_put_failure;
2953
2954 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2955 get_key_callback);
2956
2957 if (err)
2958 goto free_msg;
2959
2960 if (cookie.error)
2961 goto nla_put_failure;
2962
2963 genlmsg_end(msg, hdr);
2964 return genlmsg_reply(msg, info);
2965
2966 nla_put_failure:
2967 err = -ENOBUFS;
2968 free_msg:
2969 nlmsg_free(msg);
2970 return err;
2971 }
2972
2973 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2974 {
2975 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2976 struct key_parse key;
2977 int err;
2978 struct net_device *dev = info->user_ptr[1];
2979
2980 err = nl80211_parse_key(info, &key);
2981 if (err)
2982 return err;
2983
2984 if (key.idx < 0)
2985 return -EINVAL;
2986
2987 /* only support setting default key */
2988 if (!key.def && !key.defmgmt)
2989 return -EINVAL;
2990
2991 wdev_lock(dev->ieee80211_ptr);
2992
2993 if (key.def) {
2994 if (!rdev->ops->set_default_key) {
2995 err = -EOPNOTSUPP;
2996 goto out;
2997 }
2998
2999 err = nl80211_key_allowed(dev->ieee80211_ptr);
3000 if (err)
3001 goto out;
3002
3003 err = rdev_set_default_key(rdev, dev, key.idx,
3004 key.def_uni, key.def_multi);
3005
3006 if (err)
3007 goto out;
3008
3009 #ifdef CONFIG_CFG80211_WEXT
3010 dev->ieee80211_ptr->wext.default_key = key.idx;
3011 #endif
3012 } else {
3013 if (key.def_uni || !key.def_multi) {
3014 err = -EINVAL;
3015 goto out;
3016 }
3017
3018 if (!rdev->ops->set_default_mgmt_key) {
3019 err = -EOPNOTSUPP;
3020 goto out;
3021 }
3022
3023 err = nl80211_key_allowed(dev->ieee80211_ptr);
3024 if (err)
3025 goto out;
3026
3027 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3028 if (err)
3029 goto out;
3030
3031 #ifdef CONFIG_CFG80211_WEXT
3032 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3033 #endif
3034 }
3035
3036 out:
3037 wdev_unlock(dev->ieee80211_ptr);
3038
3039 return err;
3040 }
3041
3042 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3043 {
3044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3045 int err;
3046 struct net_device *dev = info->user_ptr[1];
3047 struct key_parse key;
3048 const u8 *mac_addr = NULL;
3049
3050 err = nl80211_parse_key(info, &key);
3051 if (err)
3052 return err;
3053
3054 if (!key.p.key)
3055 return -EINVAL;
3056
3057 if (info->attrs[NL80211_ATTR_MAC])
3058 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3059
3060 if (key.type == -1) {
3061 if (mac_addr)
3062 key.type = NL80211_KEYTYPE_PAIRWISE;
3063 else
3064 key.type = NL80211_KEYTYPE_GROUP;
3065 }
3066
3067 /* for now */
3068 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3069 key.type != NL80211_KEYTYPE_GROUP)
3070 return -EINVAL;
3071
3072 if (!rdev->ops->add_key)
3073 return -EOPNOTSUPP;
3074
3075 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3076 key.type == NL80211_KEYTYPE_PAIRWISE,
3077 mac_addr))
3078 return -EINVAL;
3079
3080 wdev_lock(dev->ieee80211_ptr);
3081 err = nl80211_key_allowed(dev->ieee80211_ptr);
3082 if (!err)
3083 err = rdev_add_key(rdev, dev, key.idx,
3084 key.type == NL80211_KEYTYPE_PAIRWISE,
3085 mac_addr, &key.p);
3086 wdev_unlock(dev->ieee80211_ptr);
3087
3088 return err;
3089 }
3090
3091 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3092 {
3093 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3094 int err;
3095 struct net_device *dev = info->user_ptr[1];
3096 u8 *mac_addr = NULL;
3097 struct key_parse key;
3098
3099 err = nl80211_parse_key(info, &key);
3100 if (err)
3101 return err;
3102
3103 if (info->attrs[NL80211_ATTR_MAC])
3104 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3105
3106 if (key.type == -1) {
3107 if (mac_addr)
3108 key.type = NL80211_KEYTYPE_PAIRWISE;
3109 else
3110 key.type = NL80211_KEYTYPE_GROUP;
3111 }
3112
3113 /* for now */
3114 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3115 key.type != NL80211_KEYTYPE_GROUP)
3116 return -EINVAL;
3117
3118 if (!rdev->ops->del_key)
3119 return -EOPNOTSUPP;
3120
3121 wdev_lock(dev->ieee80211_ptr);
3122 err = nl80211_key_allowed(dev->ieee80211_ptr);
3123
3124 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3125 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3126 err = -ENOENT;
3127
3128 if (!err)
3129 err = rdev_del_key(rdev, dev, key.idx,
3130 key.type == NL80211_KEYTYPE_PAIRWISE,
3131 mac_addr);
3132
3133 #ifdef CONFIG_CFG80211_WEXT
3134 if (!err) {
3135 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3136 dev->ieee80211_ptr->wext.default_key = -1;
3137 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3138 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3139 }
3140 #endif
3141 wdev_unlock(dev->ieee80211_ptr);
3142
3143 return err;
3144 }
3145
3146 /* This function returns an error or the number of nested attributes */
3147 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3148 {
3149 struct nlattr *attr;
3150 int n_entries = 0, tmp;
3151
3152 nla_for_each_nested(attr, nl_attr, tmp) {
3153 if (nla_len(attr) != ETH_ALEN)
3154 return -EINVAL;
3155
3156 n_entries++;
3157 }
3158
3159 return n_entries;
3160 }
3161
3162 /*
3163 * This function parses ACL information and allocates memory for ACL data.
3164 * On successful return, the calling function is responsible to free the
3165 * ACL buffer returned by this function.
3166 */
3167 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3168 struct genl_info *info)
3169 {
3170 enum nl80211_acl_policy acl_policy;
3171 struct nlattr *attr;
3172 struct cfg80211_acl_data *acl;
3173 int i = 0, n_entries, tmp;
3174
3175 if (!wiphy->max_acl_mac_addrs)
3176 return ERR_PTR(-EOPNOTSUPP);
3177
3178 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3179 return ERR_PTR(-EINVAL);
3180
3181 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3182 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3183 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3184 return ERR_PTR(-EINVAL);
3185
3186 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3187 return ERR_PTR(-EINVAL);
3188
3189 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3190 if (n_entries < 0)
3191 return ERR_PTR(n_entries);
3192
3193 if (n_entries > wiphy->max_acl_mac_addrs)
3194 return ERR_PTR(-ENOTSUPP);
3195
3196 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3197 GFP_KERNEL);
3198 if (!acl)
3199 return ERR_PTR(-ENOMEM);
3200
3201 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3202 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3203 i++;
3204 }
3205
3206 acl->n_acl_entries = n_entries;
3207 acl->acl_policy = acl_policy;
3208
3209 return acl;
3210 }
3211
3212 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3213 {
3214 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3215 struct net_device *dev = info->user_ptr[1];
3216 struct cfg80211_acl_data *acl;
3217 int err;
3218
3219 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3220 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3221 return -EOPNOTSUPP;
3222
3223 if (!dev->ieee80211_ptr->beacon_interval)
3224 return -EINVAL;
3225
3226 acl = parse_acl_data(&rdev->wiphy, info);
3227 if (IS_ERR(acl))
3228 return PTR_ERR(acl);
3229
3230 err = rdev_set_mac_acl(rdev, dev, acl);
3231
3232 kfree(acl);
3233
3234 return err;
3235 }
3236
3237 static int nl80211_parse_beacon(struct nlattr *attrs[],
3238 struct cfg80211_beacon_data *bcn)
3239 {
3240 bool haveinfo = false;
3241
3242 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3243 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3244 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3245 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3246 return -EINVAL;
3247
3248 memset(bcn, 0, sizeof(*bcn));
3249
3250 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3251 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3252 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3253 if (!bcn->head_len)
3254 return -EINVAL;
3255 haveinfo = true;
3256 }
3257
3258 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3259 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3260 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3261 haveinfo = true;
3262 }
3263
3264 if (!haveinfo)
3265 return -EINVAL;
3266
3267 if (attrs[NL80211_ATTR_IE]) {
3268 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3269 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3270 }
3271
3272 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3273 bcn->proberesp_ies =
3274 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3275 bcn->proberesp_ies_len =
3276 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3277 }
3278
3279 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3280 bcn->assocresp_ies =
3281 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3282 bcn->assocresp_ies_len =
3283 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3284 }
3285
3286 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3287 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3288 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3289 }
3290
3291 return 0;
3292 }
3293
3294 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3295 struct cfg80211_ap_settings *params)
3296 {
3297 struct wireless_dev *wdev;
3298 bool ret = false;
3299
3300 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3301 if (wdev->iftype != NL80211_IFTYPE_AP &&
3302 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3303 continue;
3304
3305 if (!wdev->preset_chandef.chan)
3306 continue;
3307
3308 params->chandef = wdev->preset_chandef;
3309 ret = true;
3310 break;
3311 }
3312
3313 return ret;
3314 }
3315
3316 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3317 enum nl80211_auth_type auth_type,
3318 enum nl80211_commands cmd)
3319 {
3320 if (auth_type > NL80211_AUTHTYPE_MAX)
3321 return false;
3322
3323 switch (cmd) {
3324 case NL80211_CMD_AUTHENTICATE:
3325 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3326 auth_type == NL80211_AUTHTYPE_SAE)
3327 return false;
3328 return true;
3329 case NL80211_CMD_CONNECT:
3330 case NL80211_CMD_START_AP:
3331 /* SAE not supported yet */
3332 if (auth_type == NL80211_AUTHTYPE_SAE)
3333 return false;
3334 return true;
3335 default:
3336 return false;
3337 }
3338 }
3339
3340 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3341 {
3342 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3343 struct net_device *dev = info->user_ptr[1];
3344 struct wireless_dev *wdev = dev->ieee80211_ptr;
3345 struct cfg80211_ap_settings params;
3346 int err;
3347
3348 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3349 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3350 return -EOPNOTSUPP;
3351
3352 if (!rdev->ops->start_ap)
3353 return -EOPNOTSUPP;
3354
3355 if (wdev->beacon_interval)
3356 return -EALREADY;
3357
3358 memset(&params, 0, sizeof(params));
3359
3360 /* these are required for START_AP */
3361 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3362 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3363 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3364 return -EINVAL;
3365
3366 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3367 if (err)
3368 return err;
3369
3370 params.beacon_interval =
3371 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3372 params.dtim_period =
3373 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3374
3375 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3376 if (err)
3377 return err;
3378
3379 /*
3380 * In theory, some of these attributes should be required here
3381 * but since they were not used when the command was originally
3382 * added, keep them optional for old user space programs to let
3383 * them continue to work with drivers that do not need the
3384 * additional information -- drivers must check!
3385 */
3386 if (info->attrs[NL80211_ATTR_SSID]) {
3387 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3388 params.ssid_len =
3389 nla_len(info->attrs[NL80211_ATTR_SSID]);
3390 if (params.ssid_len == 0 ||
3391 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3392 return -EINVAL;
3393 }
3394
3395 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3396 params.hidden_ssid = nla_get_u32(
3397 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3398 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3399 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3400 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3401 return -EINVAL;
3402 }
3403
3404 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3405
3406 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3407 params.auth_type = nla_get_u32(
3408 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3409 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3410 NL80211_CMD_START_AP))
3411 return -EINVAL;
3412 } else
3413 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3414
3415 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3416 NL80211_MAX_NR_CIPHER_SUITES);
3417 if (err)
3418 return err;
3419
3420 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3421 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3422 return -EOPNOTSUPP;
3423 params.inactivity_timeout = nla_get_u16(
3424 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3425 }
3426
3427 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3428 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3429 return -EINVAL;
3430 params.p2p_ctwindow =
3431 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3432 if (params.p2p_ctwindow > 127)
3433 return -EINVAL;
3434 if (params.p2p_ctwindow != 0 &&
3435 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3436 return -EINVAL;
3437 }
3438
3439 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3440 u8 tmp;
3441
3442 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3443 return -EINVAL;
3444 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3445 if (tmp > 1)
3446 return -EINVAL;
3447 params.p2p_opp_ps = tmp;
3448 if (params.p2p_opp_ps != 0 &&
3449 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3450 return -EINVAL;
3451 }
3452
3453 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3454 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3455 if (err)
3456 return err;
3457 } else if (wdev->preset_chandef.chan) {
3458 params.chandef = wdev->preset_chandef;
3459 } else if (!nl80211_get_ap_channel(rdev, &params))
3460 return -EINVAL;
3461
3462 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3463 wdev->iftype))
3464 return -EINVAL;
3465
3466 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3467 params.smps_mode =
3468 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3469 switch (params.smps_mode) {
3470 case NL80211_SMPS_OFF:
3471 break;
3472 case NL80211_SMPS_STATIC:
3473 if (!(rdev->wiphy.features &
3474 NL80211_FEATURE_STATIC_SMPS))
3475 return -EINVAL;
3476 break;
3477 case NL80211_SMPS_DYNAMIC:
3478 if (!(rdev->wiphy.features &
3479 NL80211_FEATURE_DYNAMIC_SMPS))
3480 return -EINVAL;
3481 break;
3482 default:
3483 return -EINVAL;
3484 }
3485 } else {
3486 params.smps_mode = NL80211_SMPS_OFF;
3487 }
3488
3489 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3490 params.acl = parse_acl_data(&rdev->wiphy, info);
3491 if (IS_ERR(params.acl))
3492 return PTR_ERR(params.acl);
3493 }
3494
3495 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3496 if (params.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ])
3497 return -EOPNOTSUPP;
3498
3499 wdev_lock(wdev);
3500 err = rdev_start_ap(rdev, dev, &params);
3501 if (!err) {
3502 wdev->preset_chandef = params.chandef;
3503 wdev->beacon_interval = params.beacon_interval;
3504 wdev->chandef = params.chandef;
3505 wdev->ssid_len = params.ssid_len;
3506 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3507 }
3508 wdev_unlock(wdev);
3509
3510 kfree(params.acl);
3511
3512 return err;
3513 }
3514
3515 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3516 {
3517 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3518 struct net_device *dev = info->user_ptr[1];
3519 struct wireless_dev *wdev = dev->ieee80211_ptr;
3520 struct cfg80211_beacon_data params;
3521 int err;
3522
3523 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3524 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3525 return -EOPNOTSUPP;
3526
3527 if (!rdev->ops->change_beacon)
3528 return -EOPNOTSUPP;
3529
3530 if (!wdev->beacon_interval)
3531 return -EINVAL;
3532
3533 err = nl80211_parse_beacon(info->attrs, &params);
3534 if (err)
3535 return err;
3536
3537 wdev_lock(wdev);
3538 err = rdev_change_beacon(rdev, dev, &params);
3539 wdev_unlock(wdev);
3540
3541 return err;
3542 }
3543
3544 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3545 {
3546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3547 struct net_device *dev = info->user_ptr[1];
3548
3549 return cfg80211_stop_ap(rdev, dev, false);
3550 }
3551
3552 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3553 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3554 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3555 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3556 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3557 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3558 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3559 };
3560
3561 static int parse_station_flags(struct genl_info *info,
3562 enum nl80211_iftype iftype,
3563 struct station_parameters *params)
3564 {
3565 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3566 struct nlattr *nla;
3567 int flag;
3568
3569 /*
3570 * Try parsing the new attribute first so userspace
3571 * can specify both for older kernels.
3572 */
3573 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3574 if (nla) {
3575 struct nl80211_sta_flag_update *sta_flags;
3576
3577 sta_flags = nla_data(nla);
3578 params->sta_flags_mask = sta_flags->mask;
3579 params->sta_flags_set = sta_flags->set;
3580 params->sta_flags_set &= params->sta_flags_mask;
3581 if ((params->sta_flags_mask |
3582 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3583 return -EINVAL;
3584 return 0;
3585 }
3586
3587 /* if present, parse the old attribute */
3588
3589 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3590 if (!nla)
3591 return 0;
3592
3593 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3594 nla, sta_flags_policy))
3595 return -EINVAL;
3596
3597 /*
3598 * Only allow certain flags for interface types so that
3599 * other attributes are silently ignored. Remember that
3600 * this is backward compatibility code with old userspace
3601 * and shouldn't be hit in other cases anyway.
3602 */
3603 switch (iftype) {
3604 case NL80211_IFTYPE_AP:
3605 case NL80211_IFTYPE_AP_VLAN:
3606 case NL80211_IFTYPE_P2P_GO:
3607 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3608 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3609 BIT(NL80211_STA_FLAG_WME) |
3610 BIT(NL80211_STA_FLAG_MFP);
3611 break;
3612 case NL80211_IFTYPE_P2P_CLIENT:
3613 case NL80211_IFTYPE_STATION:
3614 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3615 BIT(NL80211_STA_FLAG_TDLS_PEER);
3616 break;
3617 case NL80211_IFTYPE_MESH_POINT:
3618 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3619 BIT(NL80211_STA_FLAG_MFP) |
3620 BIT(NL80211_STA_FLAG_AUTHORIZED);
3621 default:
3622 return -EINVAL;
3623 }
3624
3625 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3626 if (flags[flag]) {
3627 params->sta_flags_set |= (1<<flag);
3628
3629 /* no longer support new API additions in old API */
3630 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3631 return -EINVAL;
3632 }
3633 }
3634
3635 return 0;
3636 }
3637
3638 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3639 int attr)
3640 {
3641 struct nlattr *rate;
3642 u32 bitrate;
3643 u16 bitrate_compat;
3644 enum nl80211_attrs rate_flg;
3645
3646 rate = nla_nest_start(msg, attr);
3647 if (!rate)
3648 return false;
3649
3650 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3651 bitrate = cfg80211_calculate_bitrate(info);
3652 /* report 16-bit bitrate only if we can */
3653 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3654 if (bitrate > 0 &&
3655 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3656 return false;
3657 if (bitrate_compat > 0 &&
3658 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3659 return false;
3660
3661 switch (info->bw) {
3662 case RATE_INFO_BW_5:
3663 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3664 break;
3665 case RATE_INFO_BW_10:
3666 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3667 break;
3668 default:
3669 WARN_ON(1);
3670 /* fall through */
3671 case RATE_INFO_BW_20:
3672 rate_flg = 0;
3673 break;
3674 case RATE_INFO_BW_40:
3675 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3676 break;
3677 case RATE_INFO_BW_80:
3678 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3679 break;
3680 case RATE_INFO_BW_160:
3681 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3682 break;
3683 }
3684
3685 if (rate_flg && nla_put_flag(msg, rate_flg))
3686 return false;
3687
3688 if (info->flags & RATE_INFO_FLAGS_MCS) {
3689 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3690 return false;
3691 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3692 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3693 return false;
3694 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3695 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3696 return false;
3697 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3698 return false;
3699 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3700 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3701 return false;
3702 }
3703
3704 nla_nest_end(msg, rate);
3705 return true;
3706 }
3707
3708 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3709 int id)
3710 {
3711 void *attr;
3712 int i = 0;
3713
3714 if (!mask)
3715 return true;
3716
3717 attr = nla_nest_start(msg, id);
3718 if (!attr)
3719 return false;
3720
3721 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3722 if (!(mask & BIT(i)))
3723 continue;
3724
3725 if (nla_put_u8(msg, i, signal[i]))
3726 return false;
3727 }
3728
3729 nla_nest_end(msg, attr);
3730
3731 return true;
3732 }
3733
3734 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3735 u32 seq, int flags,
3736 struct cfg80211_registered_device *rdev,
3737 struct net_device *dev,
3738 const u8 *mac_addr, struct station_info *sinfo)
3739 {
3740 void *hdr;
3741 struct nlattr *sinfoattr, *bss_param;
3742
3743 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3744 if (!hdr)
3745 return -1;
3746
3747 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3748 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3749 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3750 goto nla_put_failure;
3751
3752 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3753 if (!sinfoattr)
3754 goto nla_put_failure;
3755
3756 #define PUT_SINFO(attr, memb, type) do { \
3757 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3758 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3759 sinfo->memb)) \
3760 goto nla_put_failure; \
3761 } while (0)
3762
3763 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3764 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3765
3766 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3767 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3768 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3769 (u32)sinfo->rx_bytes))
3770 goto nla_put_failure;
3771
3772 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3773 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3774 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3775 (u32)sinfo->tx_bytes))
3776 goto nla_put_failure;
3777
3778 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3779 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3780 PUT_SINFO(LLID, llid, u16);
3781 PUT_SINFO(PLID, plid, u16);
3782 PUT_SINFO(PLINK_STATE, plink_state, u8);
3783
3784 switch (rdev->wiphy.signal_type) {
3785 case CFG80211_SIGNAL_TYPE_MBM:
3786 PUT_SINFO(SIGNAL, signal, u8);
3787 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3788 break;
3789 default:
3790 break;
3791 }
3792 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3793 if (!nl80211_put_signal(msg, sinfo->chains,
3794 sinfo->chain_signal,
3795 NL80211_STA_INFO_CHAIN_SIGNAL))
3796 goto nla_put_failure;
3797 }
3798 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3799 if (!nl80211_put_signal(msg, sinfo->chains,
3800 sinfo->chain_signal_avg,
3801 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3802 goto nla_put_failure;
3803 }
3804 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3805 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3806 NL80211_STA_INFO_TX_BITRATE))
3807 goto nla_put_failure;
3808 }
3809 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3810 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3811 NL80211_STA_INFO_RX_BITRATE))
3812 goto nla_put_failure;
3813 }
3814
3815 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3816 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3817 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3818 PUT_SINFO(TX_FAILED, tx_failed, u32);
3819 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3820 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3821 PUT_SINFO(LOCAL_PM, local_pm, u32);
3822 PUT_SINFO(PEER_PM, peer_pm, u32);
3823 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3824
3825 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3826 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3827 if (!bss_param)
3828 goto nla_put_failure;
3829
3830 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3831 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3832 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3833 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3834 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3835 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3836 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3837 sinfo->bss_param.dtim_period) ||
3838 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3839 sinfo->bss_param.beacon_interval))
3840 goto nla_put_failure;
3841
3842 nla_nest_end(msg, bss_param);
3843 }
3844 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3845 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3846 sizeof(struct nl80211_sta_flag_update),
3847 &sinfo->sta_flags))
3848 goto nla_put_failure;
3849
3850 PUT_SINFO(T_OFFSET, t_offset, u64);
3851 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3852 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3853 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3854
3855 #undef PUT_SINFO
3856
3857 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3858 struct nlattr *tidsattr;
3859 int tid;
3860
3861 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3862 if (!tidsattr)
3863 goto nla_put_failure;
3864
3865 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3866 struct cfg80211_tid_stats *tidstats;
3867 struct nlattr *tidattr;
3868
3869 tidstats = &sinfo->pertid[tid];
3870
3871 if (!tidstats->filled)
3872 continue;
3873
3874 tidattr = nla_nest_start(msg, tid + 1);
3875 if (!tidattr)
3876 goto nla_put_failure;
3877
3878 #define PUT_TIDVAL(attr, memb, type) do { \
3879 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3880 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3881 tidstats->memb)) \
3882 goto nla_put_failure; \
3883 } while (0)
3884
3885 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3886 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3887 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3888 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3889
3890 #undef PUT_TIDVAL
3891 nla_nest_end(msg, tidattr);
3892 }
3893
3894 nla_nest_end(msg, tidsattr);
3895 }
3896
3897 nla_nest_end(msg, sinfoattr);
3898
3899 if (sinfo->assoc_req_ies_len &&
3900 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3901 sinfo->assoc_req_ies))
3902 goto nla_put_failure;
3903
3904 genlmsg_end(msg, hdr);
3905 return 0;
3906
3907 nla_put_failure:
3908 genlmsg_cancel(msg, hdr);
3909 return -EMSGSIZE;
3910 }
3911
3912 static int nl80211_dump_station(struct sk_buff *skb,
3913 struct netlink_callback *cb)
3914 {
3915 struct station_info sinfo;
3916 struct cfg80211_registered_device *rdev;
3917 struct wireless_dev *wdev;
3918 u8 mac_addr[ETH_ALEN];
3919 int sta_idx = cb->args[2];
3920 int err;
3921
3922 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3923 if (err)
3924 return err;
3925
3926 if (!wdev->netdev) {
3927 err = -EINVAL;
3928 goto out_err;
3929 }
3930
3931 if (!rdev->ops->dump_station) {
3932 err = -EOPNOTSUPP;
3933 goto out_err;
3934 }
3935
3936 while (1) {
3937 memset(&sinfo, 0, sizeof(sinfo));
3938 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3939 mac_addr, &sinfo);
3940 if (err == -ENOENT)
3941 break;
3942 if (err)
3943 goto out_err;
3944
3945 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3946 NETLINK_CB(cb->skb).portid,
3947 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3948 rdev, wdev->netdev, mac_addr,
3949 &sinfo) < 0)
3950 goto out;
3951
3952 sta_idx++;
3953 }
3954
3955
3956 out:
3957 cb->args[2] = sta_idx;
3958 err = skb->len;
3959 out_err:
3960 nl80211_finish_wdev_dump(rdev);
3961
3962 return err;
3963 }
3964
3965 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3966 {
3967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3968 struct net_device *dev = info->user_ptr[1];
3969 struct station_info sinfo;
3970 struct sk_buff *msg;
3971 u8 *mac_addr = NULL;
3972 int err;
3973
3974 memset(&sinfo, 0, sizeof(sinfo));
3975
3976 if (!info->attrs[NL80211_ATTR_MAC])
3977 return -EINVAL;
3978
3979 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3980
3981 if (!rdev->ops->get_station)
3982 return -EOPNOTSUPP;
3983
3984 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3985 if (err)
3986 return err;
3987
3988 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3989 if (!msg)
3990 return -ENOMEM;
3991
3992 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3993 info->snd_portid, info->snd_seq, 0,
3994 rdev, dev, mac_addr, &sinfo) < 0) {
3995 nlmsg_free(msg);
3996 return -ENOBUFS;
3997 }
3998
3999 return genlmsg_reply(msg, info);
4000 }
4001
4002 int cfg80211_check_station_change(struct wiphy *wiphy,
4003 struct station_parameters *params,
4004 enum cfg80211_station_type statype)
4005 {
4006 if (params->listen_interval != -1 &&
4007 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4008 return -EINVAL;
4009
4010 if (params->support_p2p_ps != -1 &&
4011 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4012 return -EINVAL;
4013
4014 if (params->aid &&
4015 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4016 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4017 return -EINVAL;
4018
4019 /* When you run into this, adjust the code below for the new flag */
4020 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4021
4022 switch (statype) {
4023 case CFG80211_STA_MESH_PEER_KERNEL:
4024 case CFG80211_STA_MESH_PEER_USER:
4025 /*
4026 * No ignoring the TDLS flag here -- the userspace mesh
4027 * code doesn't have the bug of including TDLS in the
4028 * mask everywhere.
4029 */
4030 if (params->sta_flags_mask &
4031 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4032 BIT(NL80211_STA_FLAG_MFP) |
4033 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4034 return -EINVAL;
4035 break;
4036 case CFG80211_STA_TDLS_PEER_SETUP:
4037 case CFG80211_STA_TDLS_PEER_ACTIVE:
4038 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4039 return -EINVAL;
4040 /* ignore since it can't change */
4041 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4042 break;
4043 default:
4044 /* disallow mesh-specific things */
4045 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4046 return -EINVAL;
4047 if (params->local_pm)
4048 return -EINVAL;
4049 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4050 return -EINVAL;
4051 }
4052
4053 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4054 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4055 /* TDLS can't be set, ... */
4056 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4057 return -EINVAL;
4058 /*
4059 * ... but don't bother the driver with it. This works around
4060 * a hostapd/wpa_supplicant issue -- it always includes the
4061 * TLDS_PEER flag in the mask even for AP mode.
4062 */
4063 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4064 }
4065
4066 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4067 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4068 /* reject other things that can't change */
4069 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4070 return -EINVAL;
4071 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4072 return -EINVAL;
4073 if (params->supported_rates)
4074 return -EINVAL;
4075 if (params->ext_capab || params->ht_capa || params->vht_capa)
4076 return -EINVAL;
4077 }
4078
4079 if (statype != CFG80211_STA_AP_CLIENT &&
4080 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4081 if (params->vlan)
4082 return -EINVAL;
4083 }
4084
4085 switch (statype) {
4086 case CFG80211_STA_AP_MLME_CLIENT:
4087 /* Use this only for authorizing/unauthorizing a station */
4088 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4089 return -EOPNOTSUPP;
4090 break;
4091 case CFG80211_STA_AP_CLIENT:
4092 case CFG80211_STA_AP_CLIENT_UNASSOC:
4093 /* accept only the listed bits */
4094 if (params->sta_flags_mask &
4095 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4096 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4097 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4098 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4099 BIT(NL80211_STA_FLAG_WME) |
4100 BIT(NL80211_STA_FLAG_MFP)))
4101 return -EINVAL;
4102
4103 /* but authenticated/associated only if driver handles it */
4104 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4105 params->sta_flags_mask &
4106 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4107 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4108 return -EINVAL;
4109 break;
4110 case CFG80211_STA_IBSS:
4111 case CFG80211_STA_AP_STA:
4112 /* reject any changes other than AUTHORIZED */
4113 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4114 return -EINVAL;
4115 break;
4116 case CFG80211_STA_TDLS_PEER_SETUP:
4117 /* reject any changes other than AUTHORIZED or WME */
4118 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4119 BIT(NL80211_STA_FLAG_WME)))
4120 return -EINVAL;
4121 /* force (at least) rates when authorizing */
4122 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4123 !params->supported_rates)
4124 return -EINVAL;
4125 break;
4126 case CFG80211_STA_TDLS_PEER_ACTIVE:
4127 /* reject any changes */
4128 return -EINVAL;
4129 case CFG80211_STA_MESH_PEER_KERNEL:
4130 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4131 return -EINVAL;
4132 break;
4133 case CFG80211_STA_MESH_PEER_USER:
4134 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4135 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4136 return -EINVAL;
4137 break;
4138 }
4139
4140 return 0;
4141 }
4142 EXPORT_SYMBOL(cfg80211_check_station_change);
4143
4144 /*
4145 * Get vlan interface making sure it is running and on the right wiphy.
4146 */
4147 static struct net_device *get_vlan(struct genl_info *info,
4148 struct cfg80211_registered_device *rdev)
4149 {
4150 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4151 struct net_device *v;
4152 int ret;
4153
4154 if (!vlanattr)
4155 return NULL;
4156
4157 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4158 if (!v)
4159 return ERR_PTR(-ENODEV);
4160
4161 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4162 ret = -EINVAL;
4163 goto error;
4164 }
4165
4166 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4167 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4168 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4169 ret = -EINVAL;
4170 goto error;
4171 }
4172
4173 if (!netif_running(v)) {
4174 ret = -ENETDOWN;
4175 goto error;
4176 }
4177
4178 return v;
4179 error:
4180 dev_put(v);
4181 return ERR_PTR(ret);
4182 }
4183
4184 static const struct nla_policy
4185 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4186 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4187 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4188 };
4189
4190 static int nl80211_parse_sta_wme(struct genl_info *info,
4191 struct station_parameters *params)
4192 {
4193 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4194 struct nlattr *nla;
4195 int err;
4196
4197 /* parse WME attributes if present */
4198 if (!info->attrs[NL80211_ATTR_STA_WME])
4199 return 0;
4200
4201 nla = info->attrs[NL80211_ATTR_STA_WME];
4202 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4203 nl80211_sta_wme_policy);
4204 if (err)
4205 return err;
4206
4207 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4208 params->uapsd_queues = nla_get_u8(
4209 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4210 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4211 return -EINVAL;
4212
4213 if (tb[NL80211_STA_WME_MAX_SP])
4214 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4215
4216 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4217 return -EINVAL;
4218
4219 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4220
4221 return 0;
4222 }
4223
4224 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4225 struct station_parameters *params)
4226 {
4227 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4228 params->supported_channels =
4229 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4230 params->supported_channels_len =
4231 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4232 /*
4233 * Need to include at least one (first channel, number of
4234 * channels) tuple for each subband, and must have proper
4235 * tuples for the rest of the data as well.
4236 */
4237 if (params->supported_channels_len < 2)
4238 return -EINVAL;
4239 if (params->supported_channels_len % 2)
4240 return -EINVAL;
4241 }
4242
4243 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4244 params->supported_oper_classes =
4245 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4246 params->supported_oper_classes_len =
4247 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4248 /*
4249 * The value of the Length field of the Supported Operating
4250 * Classes element is between 2 and 253.
4251 */
4252 if (params->supported_oper_classes_len < 2 ||
4253 params->supported_oper_classes_len > 253)
4254 return -EINVAL;
4255 }
4256 return 0;
4257 }
4258
4259 static int nl80211_set_station_tdls(struct genl_info *info,
4260 struct station_parameters *params)
4261 {
4262 int err;
4263 /* Dummy STA entry gets updated once the peer capabilities are known */
4264 if (info->attrs[NL80211_ATTR_PEER_AID])
4265 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4266 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4267 params->ht_capa =
4268 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4269 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4270 params->vht_capa =
4271 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4272
4273 err = nl80211_parse_sta_channel_info(info, params);
4274 if (err)
4275 return err;
4276
4277 return nl80211_parse_sta_wme(info, params);
4278 }
4279
4280 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4281 {
4282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4283 struct net_device *dev = info->user_ptr[1];
4284 struct station_parameters params;
4285 u8 *mac_addr;
4286 int err;
4287
4288 memset(&params, 0, sizeof(params));
4289
4290 if (!rdev->ops->change_station)
4291 return -EOPNOTSUPP;
4292
4293 /*
4294 * AID and listen_interval properties can be set only for unassociated
4295 * station. Include these parameters here and will check them in
4296 * cfg80211_check_station_change().
4297 */
4298 if (info->attrs[NL80211_ATTR_STA_AID])
4299 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4300
4301 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4302 params.listen_interval =
4303 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4304 else
4305 params.listen_interval = -1;
4306
4307 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4308 u8 tmp;
4309
4310 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4311 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4312 return -EINVAL;
4313
4314 params.support_p2p_ps = tmp;
4315 } else {
4316 params.support_p2p_ps = -1;
4317 }
4318
4319 if (!info->attrs[NL80211_ATTR_MAC])
4320 return -EINVAL;
4321
4322 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4323
4324 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4325 params.supported_rates =
4326 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4327 params.supported_rates_len =
4328 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4329 }
4330
4331 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4332 params.capability =
4333 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4334 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4335 }
4336
4337 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4338 params.ext_capab =
4339 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4340 params.ext_capab_len =
4341 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4342 }
4343
4344 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4345 return -EINVAL;
4346
4347 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4348 params.plink_action =
4349 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4350 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4351 return -EINVAL;
4352 }
4353
4354 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4355 params.plink_state =
4356 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4357 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4358 return -EINVAL;
4359 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4360 }
4361
4362 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4363 enum nl80211_mesh_power_mode pm = nla_get_u32(
4364 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4365
4366 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4367 pm > NL80211_MESH_POWER_MAX)
4368 return -EINVAL;
4369
4370 params.local_pm = pm;
4371 }
4372
4373 /* Include parameters for TDLS peer (will check later) */
4374 err = nl80211_set_station_tdls(info, &params);
4375 if (err)
4376 return err;
4377
4378 params.vlan = get_vlan(info, rdev);
4379 if (IS_ERR(params.vlan))
4380 return PTR_ERR(params.vlan);
4381
4382 switch (dev->ieee80211_ptr->iftype) {
4383 case NL80211_IFTYPE_AP:
4384 case NL80211_IFTYPE_AP_VLAN:
4385 case NL80211_IFTYPE_P2P_GO:
4386 case NL80211_IFTYPE_P2P_CLIENT:
4387 case NL80211_IFTYPE_STATION:
4388 case NL80211_IFTYPE_ADHOC:
4389 case NL80211_IFTYPE_MESH_POINT:
4390 break;
4391 default:
4392 err = -EOPNOTSUPP;
4393 goto out_put_vlan;
4394 }
4395
4396 /* driver will call cfg80211_check_station_change() */
4397 err = rdev_change_station(rdev, dev, mac_addr, &params);
4398
4399 out_put_vlan:
4400 if (params.vlan)
4401 dev_put(params.vlan);
4402
4403 return err;
4404 }
4405
4406 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4407 {
4408 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4409 int err;
4410 struct net_device *dev = info->user_ptr[1];
4411 struct station_parameters params;
4412 u8 *mac_addr = NULL;
4413 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4414 BIT(NL80211_STA_FLAG_ASSOCIATED);
4415
4416 memset(&params, 0, sizeof(params));
4417
4418 if (!rdev->ops->add_station)
4419 return -EOPNOTSUPP;
4420
4421 if (!info->attrs[NL80211_ATTR_MAC])
4422 return -EINVAL;
4423
4424 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4425 return -EINVAL;
4426
4427 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4428 return -EINVAL;
4429
4430 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4431 !info->attrs[NL80211_ATTR_PEER_AID])
4432 return -EINVAL;
4433
4434 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4435 params.supported_rates =
4436 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4437 params.supported_rates_len =
4438 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4439 params.listen_interval =
4440 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4441
4442 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4443 u8 tmp;
4444
4445 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4446 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4447 return -EINVAL;
4448
4449 params.support_p2p_ps = tmp;
4450 } else {
4451 /*
4452 * if not specified, assume it's supported for P2P GO interface,
4453 * and is NOT supported for AP interface
4454 */
4455 params.support_p2p_ps =
4456 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4457 }
4458
4459 if (info->attrs[NL80211_ATTR_PEER_AID])
4460 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4461 else
4462 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4463 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4464 return -EINVAL;
4465
4466 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4467 params.capability =
4468 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4469 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4470 }
4471
4472 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4473 params.ext_capab =
4474 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4475 params.ext_capab_len =
4476 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4477 }
4478
4479 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4480 params.ht_capa =
4481 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4482
4483 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4484 params.vht_capa =
4485 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4486
4487 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4488 params.opmode_notif_used = true;
4489 params.opmode_notif =
4490 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4491 }
4492
4493 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4494 params.plink_action =
4495 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4496 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4497 return -EINVAL;
4498 }
4499
4500 err = nl80211_parse_sta_channel_info(info, &params);
4501 if (err)
4502 return err;
4503
4504 err = nl80211_parse_sta_wme(info, &params);
4505 if (err)
4506 return err;
4507
4508 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4509 return -EINVAL;
4510
4511 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4512 * as userspace might just pass through the capabilities from the IEs
4513 * directly, rather than enforcing this restriction and returning an
4514 * error in this case.
4515 */
4516 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4517 params.ht_capa = NULL;
4518 params.vht_capa = NULL;
4519 }
4520
4521 /* When you run into this, adjust the code below for the new flag */
4522 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4523
4524 switch (dev->ieee80211_ptr->iftype) {
4525 case NL80211_IFTYPE_AP:
4526 case NL80211_IFTYPE_AP_VLAN:
4527 case NL80211_IFTYPE_P2P_GO:
4528 /* ignore WME attributes if iface/sta is not capable */
4529 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4530 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4531 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4532
4533 /* TDLS peers cannot be added */
4534 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4535 info->attrs[NL80211_ATTR_PEER_AID])
4536 return -EINVAL;
4537 /* but don't bother the driver with it */
4538 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4539
4540 /* allow authenticated/associated only if driver handles it */
4541 if (!(rdev->wiphy.features &
4542 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4543 params.sta_flags_mask & auth_assoc)
4544 return -EINVAL;
4545
4546 /* Older userspace, or userspace wanting to be compatible with
4547 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4548 * and assoc flags in the mask, but assumes the station will be
4549 * added as associated anyway since this was the required driver
4550 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4551 * introduced.
4552 * In order to not bother drivers with this quirk in the API
4553 * set the flags in both the mask and set for new stations in
4554 * this case.
4555 */
4556 if (!(params.sta_flags_mask & auth_assoc)) {
4557 params.sta_flags_mask |= auth_assoc;
4558 params.sta_flags_set |= auth_assoc;
4559 }
4560
4561 /* must be last in here for error handling */
4562 params.vlan = get_vlan(info, rdev);
4563 if (IS_ERR(params.vlan))
4564 return PTR_ERR(params.vlan);
4565 break;
4566 case NL80211_IFTYPE_MESH_POINT:
4567 /* ignore uAPSD data */
4568 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4569
4570 /* associated is disallowed */
4571 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4572 return -EINVAL;
4573 /* TDLS peers cannot be added */
4574 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4575 info->attrs[NL80211_ATTR_PEER_AID])
4576 return -EINVAL;
4577 break;
4578 case NL80211_IFTYPE_STATION:
4579 case NL80211_IFTYPE_P2P_CLIENT:
4580 /* ignore uAPSD data */
4581 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4582
4583 /* these are disallowed */
4584 if (params.sta_flags_mask &
4585 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4586 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4587 return -EINVAL;
4588 /* Only TDLS peers can be added */
4589 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4590 return -EINVAL;
4591 /* Can only add if TDLS ... */
4592 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4593 return -EOPNOTSUPP;
4594 /* ... with external setup is supported */
4595 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4596 return -EOPNOTSUPP;
4597 /*
4598 * Older wpa_supplicant versions always mark the TDLS peer
4599 * as authorized, but it shouldn't yet be.
4600 */
4601 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4602 break;
4603 default:
4604 return -EOPNOTSUPP;
4605 }
4606
4607 /* be aware of params.vlan when changing code here */
4608
4609 err = rdev_add_station(rdev, dev, mac_addr, &params);
4610
4611 if (params.vlan)
4612 dev_put(params.vlan);
4613 return err;
4614 }
4615
4616 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4617 {
4618 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4619 struct net_device *dev = info->user_ptr[1];
4620 struct station_del_parameters params;
4621
4622 memset(&params, 0, sizeof(params));
4623
4624 if (info->attrs[NL80211_ATTR_MAC])
4625 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4626
4627 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4628 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4629 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4630 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4631 return -EINVAL;
4632
4633 if (!rdev->ops->del_station)
4634 return -EOPNOTSUPP;
4635
4636 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4637 params.subtype =
4638 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4639 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4640 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4641 return -EINVAL;
4642 } else {
4643 /* Default to Deauthentication frame */
4644 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4645 }
4646
4647 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4648 params.reason_code =
4649 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4650 if (params.reason_code == 0)
4651 return -EINVAL; /* 0 is reserved */
4652 } else {
4653 /* Default to reason code 2 */
4654 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4655 }
4656
4657 return rdev_del_station(rdev, dev, &params);
4658 }
4659
4660 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4661 int flags, struct net_device *dev,
4662 u8 *dst, u8 *next_hop,
4663 struct mpath_info *pinfo)
4664 {
4665 void *hdr;
4666 struct nlattr *pinfoattr;
4667
4668 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4669 if (!hdr)
4670 return -1;
4671
4672 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4673 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4674 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4675 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4676 goto nla_put_failure;
4677
4678 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4679 if (!pinfoattr)
4680 goto nla_put_failure;
4681 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4682 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4683 pinfo->frame_qlen))
4684 goto nla_put_failure;
4685 if (((pinfo->filled & MPATH_INFO_SN) &&
4686 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4687 ((pinfo->filled & MPATH_INFO_METRIC) &&
4688 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4689 pinfo->metric)) ||
4690 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4691 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4692 pinfo->exptime)) ||
4693 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4694 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4695 pinfo->flags)) ||
4696 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4697 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4698 pinfo->discovery_timeout)) ||
4699 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4700 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4701 pinfo->discovery_retries)))
4702 goto nla_put_failure;
4703
4704 nla_nest_end(msg, pinfoattr);
4705
4706 genlmsg_end(msg, hdr);
4707 return 0;
4708
4709 nla_put_failure:
4710 genlmsg_cancel(msg, hdr);
4711 return -EMSGSIZE;
4712 }
4713
4714 static int nl80211_dump_mpath(struct sk_buff *skb,
4715 struct netlink_callback *cb)
4716 {
4717 struct mpath_info pinfo;
4718 struct cfg80211_registered_device *rdev;
4719 struct wireless_dev *wdev;
4720 u8 dst[ETH_ALEN];
4721 u8 next_hop[ETH_ALEN];
4722 int path_idx = cb->args[2];
4723 int err;
4724
4725 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4726 if (err)
4727 return err;
4728
4729 if (!rdev->ops->dump_mpath) {
4730 err = -EOPNOTSUPP;
4731 goto out_err;
4732 }
4733
4734 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4735 err = -EOPNOTSUPP;
4736 goto out_err;
4737 }
4738
4739 while (1) {
4740 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4741 next_hop, &pinfo);
4742 if (err == -ENOENT)
4743 break;
4744 if (err)
4745 goto out_err;
4746
4747 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4748 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4749 wdev->netdev, dst, next_hop,
4750 &pinfo) < 0)
4751 goto out;
4752
4753 path_idx++;
4754 }
4755
4756
4757 out:
4758 cb->args[2] = path_idx;
4759 err = skb->len;
4760 out_err:
4761 nl80211_finish_wdev_dump(rdev);
4762 return err;
4763 }
4764
4765 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4766 {
4767 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4768 int err;
4769 struct net_device *dev = info->user_ptr[1];
4770 struct mpath_info pinfo;
4771 struct sk_buff *msg;
4772 u8 *dst = NULL;
4773 u8 next_hop[ETH_ALEN];
4774
4775 memset(&pinfo, 0, sizeof(pinfo));
4776
4777 if (!info->attrs[NL80211_ATTR_MAC])
4778 return -EINVAL;
4779
4780 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4781
4782 if (!rdev->ops->get_mpath)
4783 return -EOPNOTSUPP;
4784
4785 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4786 return -EOPNOTSUPP;
4787
4788 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4789 if (err)
4790 return err;
4791
4792 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4793 if (!msg)
4794 return -ENOMEM;
4795
4796 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4797 dev, dst, next_hop, &pinfo) < 0) {
4798 nlmsg_free(msg);
4799 return -ENOBUFS;
4800 }
4801
4802 return genlmsg_reply(msg, info);
4803 }
4804
4805 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4806 {
4807 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4808 struct net_device *dev = info->user_ptr[1];
4809 u8 *dst = NULL;
4810 u8 *next_hop = NULL;
4811
4812 if (!info->attrs[NL80211_ATTR_MAC])
4813 return -EINVAL;
4814
4815 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4816 return -EINVAL;
4817
4818 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4819 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4820
4821 if (!rdev->ops->change_mpath)
4822 return -EOPNOTSUPP;
4823
4824 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4825 return -EOPNOTSUPP;
4826
4827 return rdev_change_mpath(rdev, dev, dst, next_hop);
4828 }
4829
4830 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4831 {
4832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4833 struct net_device *dev = info->user_ptr[1];
4834 u8 *dst = NULL;
4835 u8 *next_hop = NULL;
4836
4837 if (!info->attrs[NL80211_ATTR_MAC])
4838 return -EINVAL;
4839
4840 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4841 return -EINVAL;
4842
4843 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4844 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4845
4846 if (!rdev->ops->add_mpath)
4847 return -EOPNOTSUPP;
4848
4849 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4850 return -EOPNOTSUPP;
4851
4852 return rdev_add_mpath(rdev, dev, dst, next_hop);
4853 }
4854
4855 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4856 {
4857 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4858 struct net_device *dev = info->user_ptr[1];
4859 u8 *dst = NULL;
4860
4861 if (info->attrs[NL80211_ATTR_MAC])
4862 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4863
4864 if (!rdev->ops->del_mpath)
4865 return -EOPNOTSUPP;
4866
4867 return rdev_del_mpath(rdev, dev, dst);
4868 }
4869
4870 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4871 {
4872 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4873 int err;
4874 struct net_device *dev = info->user_ptr[1];
4875 struct mpath_info pinfo;
4876 struct sk_buff *msg;
4877 u8 *dst = NULL;
4878 u8 mpp[ETH_ALEN];
4879
4880 memset(&pinfo, 0, sizeof(pinfo));
4881
4882 if (!info->attrs[NL80211_ATTR_MAC])
4883 return -EINVAL;
4884
4885 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4886
4887 if (!rdev->ops->get_mpp)
4888 return -EOPNOTSUPP;
4889
4890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4891 return -EOPNOTSUPP;
4892
4893 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4894 if (err)
4895 return err;
4896
4897 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4898 if (!msg)
4899 return -ENOMEM;
4900
4901 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4902 dev, dst, mpp, &pinfo) < 0) {
4903 nlmsg_free(msg);
4904 return -ENOBUFS;
4905 }
4906
4907 return genlmsg_reply(msg, info);
4908 }
4909
4910 static int nl80211_dump_mpp(struct sk_buff *skb,
4911 struct netlink_callback *cb)
4912 {
4913 struct mpath_info pinfo;
4914 struct cfg80211_registered_device *rdev;
4915 struct wireless_dev *wdev;
4916 u8 dst[ETH_ALEN];
4917 u8 mpp[ETH_ALEN];
4918 int path_idx = cb->args[2];
4919 int err;
4920
4921 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4922 if (err)
4923 return err;
4924
4925 if (!rdev->ops->dump_mpp) {
4926 err = -EOPNOTSUPP;
4927 goto out_err;
4928 }
4929
4930 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4931 err = -EOPNOTSUPP;
4932 goto out_err;
4933 }
4934
4935 while (1) {
4936 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4937 mpp, &pinfo);
4938 if (err == -ENOENT)
4939 break;
4940 if (err)
4941 goto out_err;
4942
4943 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4944 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4945 wdev->netdev, dst, mpp,
4946 &pinfo) < 0)
4947 goto out;
4948
4949 path_idx++;
4950 }
4951
4952 out:
4953 cb->args[2] = path_idx;
4954 err = skb->len;
4955 out_err:
4956 nl80211_finish_wdev_dump(rdev);
4957 return err;
4958 }
4959
4960 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4961 {
4962 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4963 struct net_device *dev = info->user_ptr[1];
4964 struct wireless_dev *wdev = dev->ieee80211_ptr;
4965 struct bss_parameters params;
4966 int err;
4967
4968 memset(&params, 0, sizeof(params));
4969 /* default to not changing parameters */
4970 params.use_cts_prot = -1;
4971 params.use_short_preamble = -1;
4972 params.use_short_slot_time = -1;
4973 params.ap_isolate = -1;
4974 params.ht_opmode = -1;
4975 params.p2p_ctwindow = -1;
4976 params.p2p_opp_ps = -1;
4977
4978 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4979 params.use_cts_prot =
4980 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4981 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4982 params.use_short_preamble =
4983 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4984 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4985 params.use_short_slot_time =
4986 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4987 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4988 params.basic_rates =
4989 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4990 params.basic_rates_len =
4991 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4992 }
4993 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4994 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4995 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4996 params.ht_opmode =
4997 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4998
4999 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5000 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5001 return -EINVAL;
5002 params.p2p_ctwindow =
5003 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5004 if (params.p2p_ctwindow < 0)
5005 return -EINVAL;
5006 if (params.p2p_ctwindow != 0 &&
5007 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5008 return -EINVAL;
5009 }
5010
5011 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5012 u8 tmp;
5013
5014 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5015 return -EINVAL;
5016 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5017 if (tmp > 1)
5018 return -EINVAL;
5019 params.p2p_opp_ps = tmp;
5020 if (params.p2p_opp_ps &&
5021 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5022 return -EINVAL;
5023 }
5024
5025 if (!rdev->ops->change_bss)
5026 return -EOPNOTSUPP;
5027
5028 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5029 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5030 return -EOPNOTSUPP;
5031
5032 wdev_lock(wdev);
5033 err = rdev_change_bss(rdev, dev, &params);
5034 wdev_unlock(wdev);
5035
5036 return err;
5037 }
5038
5039 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5040 {
5041 char *data = NULL;
5042 bool is_indoor;
5043 enum nl80211_user_reg_hint_type user_reg_hint_type;
5044 u32 owner_nlportid;
5045
5046
5047 /*
5048 * You should only get this when cfg80211 hasn't yet initialized
5049 * completely when built-in to the kernel right between the time
5050 * window between nl80211_init() and regulatory_init(), if that is
5051 * even possible.
5052 */
5053 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5054 return -EINPROGRESS;
5055
5056 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5057 user_reg_hint_type =
5058 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5059 else
5060 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5061
5062 switch (user_reg_hint_type) {
5063 case NL80211_USER_REG_HINT_USER:
5064 case NL80211_USER_REG_HINT_CELL_BASE:
5065 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5066 return -EINVAL;
5067
5068 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5069 return regulatory_hint_user(data, user_reg_hint_type);
5070 case NL80211_USER_REG_HINT_INDOOR:
5071 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5072 owner_nlportid = info->snd_portid;
5073 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5074 } else {
5075 owner_nlportid = 0;
5076 is_indoor = true;
5077 }
5078
5079 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5080 default:
5081 return -EINVAL;
5082 }
5083 }
5084
5085 static int nl80211_get_mesh_config(struct sk_buff *skb,
5086 struct genl_info *info)
5087 {
5088 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5089 struct net_device *dev = info->user_ptr[1];
5090 struct wireless_dev *wdev = dev->ieee80211_ptr;
5091 struct mesh_config cur_params;
5092 int err = 0;
5093 void *hdr;
5094 struct nlattr *pinfoattr;
5095 struct sk_buff *msg;
5096
5097 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5098 return -EOPNOTSUPP;
5099
5100 if (!rdev->ops->get_mesh_config)
5101 return -EOPNOTSUPP;
5102
5103 wdev_lock(wdev);
5104 /* If not connected, get default parameters */
5105 if (!wdev->mesh_id_len)
5106 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5107 else
5108 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5109 wdev_unlock(wdev);
5110
5111 if (err)
5112 return err;
5113
5114 /* Draw up a netlink message to send back */
5115 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5116 if (!msg)
5117 return -ENOMEM;
5118 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5119 NL80211_CMD_GET_MESH_CONFIG);
5120 if (!hdr)
5121 goto out;
5122 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5123 if (!pinfoattr)
5124 goto nla_put_failure;
5125 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5126 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5127 cur_params.dot11MeshRetryTimeout) ||
5128 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5129 cur_params.dot11MeshConfirmTimeout) ||
5130 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5131 cur_params.dot11MeshHoldingTimeout) ||
5132 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5133 cur_params.dot11MeshMaxPeerLinks) ||
5134 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5135 cur_params.dot11MeshMaxRetries) ||
5136 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5137 cur_params.dot11MeshTTL) ||
5138 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5139 cur_params.element_ttl) ||
5140 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5141 cur_params.auto_open_plinks) ||
5142 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5143 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5144 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5145 cur_params.dot11MeshHWMPmaxPREQretries) ||
5146 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5147 cur_params.path_refresh_time) ||
5148 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5149 cur_params.min_discovery_timeout) ||
5150 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5151 cur_params.dot11MeshHWMPactivePathTimeout) ||
5152 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5153 cur_params.dot11MeshHWMPpreqMinInterval) ||
5154 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5155 cur_params.dot11MeshHWMPperrMinInterval) ||
5156 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5157 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5158 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5159 cur_params.dot11MeshHWMPRootMode) ||
5160 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5161 cur_params.dot11MeshHWMPRannInterval) ||
5162 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5163 cur_params.dot11MeshGateAnnouncementProtocol) ||
5164 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5165 cur_params.dot11MeshForwarding) ||
5166 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5167 cur_params.rssi_threshold) ||
5168 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5169 cur_params.ht_opmode) ||
5170 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5171 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5172 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5173 cur_params.dot11MeshHWMProotInterval) ||
5174 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5175 cur_params.dot11MeshHWMPconfirmationInterval) ||
5176 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5177 cur_params.power_mode) ||
5178 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5179 cur_params.dot11MeshAwakeWindowDuration) ||
5180 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5181 cur_params.plink_timeout))
5182 goto nla_put_failure;
5183 nla_nest_end(msg, pinfoattr);
5184 genlmsg_end(msg, hdr);
5185 return genlmsg_reply(msg, info);
5186
5187 nla_put_failure:
5188 genlmsg_cancel(msg, hdr);
5189 out:
5190 nlmsg_free(msg);
5191 return -ENOBUFS;
5192 }
5193
5194 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5195 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5196 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5197 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5198 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5199 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5200 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5201 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5202 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5203 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5204 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5205 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5206 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5207 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5208 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5209 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5210 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5211 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5212 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5213 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5214 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5215 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5216 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5217 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5218 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5219 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5220 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5221 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5222 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5223 };
5224
5225 static const struct nla_policy
5226 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5227 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5228 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5229 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5230 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5231 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5232 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5233 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5234 .len = IEEE80211_MAX_DATA_LEN },
5235 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5236 };
5237
5238 static int nl80211_parse_mesh_config(struct genl_info *info,
5239 struct mesh_config *cfg,
5240 u32 *mask_out)
5241 {
5242 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5243 u32 mask = 0;
5244
5245 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5246 do { \
5247 if (tb[attr]) { \
5248 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5249 return -EINVAL; \
5250 cfg->param = fn(tb[attr]); \
5251 mask |= (1 << (attr - 1)); \
5252 } \
5253 } while (0)
5254
5255
5256 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5257 return -EINVAL;
5258 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5259 info->attrs[NL80211_ATTR_MESH_CONFIG],
5260 nl80211_meshconf_params_policy))
5261 return -EINVAL;
5262
5263 /* This makes sure that there aren't more than 32 mesh config
5264 * parameters (otherwise our bitfield scheme would not work.) */
5265 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5266
5267 /* Fill in the params struct */
5268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5269 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5270 nla_get_u16);
5271 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5272 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5273 nla_get_u16);
5274 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5275 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5276 nla_get_u16);
5277 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5278 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5279 nla_get_u16);
5280 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5281 mask, NL80211_MESHCONF_MAX_RETRIES,
5282 nla_get_u8);
5283 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5284 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5285 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5286 mask, NL80211_MESHCONF_ELEMENT_TTL,
5287 nla_get_u8);
5288 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5289 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5290 nla_get_u8);
5291 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5292 1, 255, mask,
5293 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5294 nla_get_u32);
5295 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5296 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5297 nla_get_u8);
5298 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5299 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5300 nla_get_u32);
5301 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5302 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5303 nla_get_u16);
5304 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5305 1, 65535, mask,
5306 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5307 nla_get_u32);
5308 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5309 1, 65535, mask,
5310 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5311 nla_get_u16);
5312 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5313 1, 65535, mask,
5314 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5315 nla_get_u16);
5316 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5317 dot11MeshHWMPnetDiameterTraversalTime,
5318 1, 65535, mask,
5319 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5320 nla_get_u16);
5321 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5322 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5323 nla_get_u8);
5324 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5325 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5326 nla_get_u16);
5327 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5328 dot11MeshGateAnnouncementProtocol, 0, 1,
5329 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5330 nla_get_u8);
5331 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5332 mask, NL80211_MESHCONF_FORWARDING,
5333 nla_get_u8);
5334 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5335 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5336 nla_get_s32);
5337 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5338 mask, NL80211_MESHCONF_HT_OPMODE,
5339 nla_get_u16);
5340 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5341 1, 65535, mask,
5342 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5343 nla_get_u32);
5344 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5345 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5346 nla_get_u16);
5347 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5348 dot11MeshHWMPconfirmationInterval,
5349 1, 65535, mask,
5350 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5351 nla_get_u16);
5352 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5353 NL80211_MESH_POWER_ACTIVE,
5354 NL80211_MESH_POWER_MAX,
5355 mask, NL80211_MESHCONF_POWER_MODE,
5356 nla_get_u32);
5357 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5358 0, 65535, mask,
5359 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5360 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5361 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5362 nla_get_u32);
5363 if (mask_out)
5364 *mask_out = mask;
5365
5366 return 0;
5367
5368 #undef FILL_IN_MESH_PARAM_IF_SET
5369 }
5370
5371 static int nl80211_parse_mesh_setup(struct genl_info *info,
5372 struct mesh_setup *setup)
5373 {
5374 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5375 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5376
5377 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5378 return -EINVAL;
5379 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5380 info->attrs[NL80211_ATTR_MESH_SETUP],
5381 nl80211_mesh_setup_params_policy))
5382 return -EINVAL;
5383
5384 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5385 setup->sync_method =
5386 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5387 IEEE80211_SYNC_METHOD_VENDOR :
5388 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5389
5390 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5391 setup->path_sel_proto =
5392 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5393 IEEE80211_PATH_PROTOCOL_VENDOR :
5394 IEEE80211_PATH_PROTOCOL_HWMP;
5395
5396 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5397 setup->path_metric =
5398 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5399 IEEE80211_PATH_METRIC_VENDOR :
5400 IEEE80211_PATH_METRIC_AIRTIME;
5401
5402
5403 if (tb[NL80211_MESH_SETUP_IE]) {
5404 struct nlattr *ieattr =
5405 tb[NL80211_MESH_SETUP_IE];
5406 if (!is_valid_ie_attr(ieattr))
5407 return -EINVAL;
5408 setup->ie = nla_data(ieattr);
5409 setup->ie_len = nla_len(ieattr);
5410 }
5411 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5412 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5413 return -EINVAL;
5414 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5415 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5416 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5417 if (setup->is_secure)
5418 setup->user_mpm = true;
5419
5420 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5421 if (!setup->user_mpm)
5422 return -EINVAL;
5423 setup->auth_id =
5424 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5425 }
5426
5427 return 0;
5428 }
5429
5430 static int nl80211_update_mesh_config(struct sk_buff *skb,
5431 struct genl_info *info)
5432 {
5433 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5434 struct net_device *dev = info->user_ptr[1];
5435 struct wireless_dev *wdev = dev->ieee80211_ptr;
5436 struct mesh_config cfg;
5437 u32 mask;
5438 int err;
5439
5440 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5441 return -EOPNOTSUPP;
5442
5443 if (!rdev->ops->update_mesh_config)
5444 return -EOPNOTSUPP;
5445
5446 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5447 if (err)
5448 return err;
5449
5450 wdev_lock(wdev);
5451 if (!wdev->mesh_id_len)
5452 err = -ENOLINK;
5453
5454 if (!err)
5455 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5456
5457 wdev_unlock(wdev);
5458
5459 return err;
5460 }
5461
5462 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5463 struct sk_buff *msg)
5464 {
5465 struct nlattr *nl_reg_rules;
5466 unsigned int i;
5467
5468 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5469 (regdom->dfs_region &&
5470 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5471 goto nla_put_failure;
5472
5473 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5474 if (!nl_reg_rules)
5475 goto nla_put_failure;
5476
5477 for (i = 0; i < regdom->n_reg_rules; i++) {
5478 struct nlattr *nl_reg_rule;
5479 const struct ieee80211_reg_rule *reg_rule;
5480 const struct ieee80211_freq_range *freq_range;
5481 const struct ieee80211_power_rule *power_rule;
5482 unsigned int max_bandwidth_khz;
5483
5484 reg_rule = &regdom->reg_rules[i];
5485 freq_range = &reg_rule->freq_range;
5486 power_rule = &reg_rule->power_rule;
5487
5488 nl_reg_rule = nla_nest_start(msg, i);
5489 if (!nl_reg_rule)
5490 goto nla_put_failure;
5491
5492 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5493 if (!max_bandwidth_khz)
5494 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5495 reg_rule);
5496
5497 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5498 reg_rule->flags) ||
5499 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5500 freq_range->start_freq_khz) ||
5501 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5502 freq_range->end_freq_khz) ||
5503 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5504 max_bandwidth_khz) ||
5505 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5506 power_rule->max_antenna_gain) ||
5507 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5508 power_rule->max_eirp) ||
5509 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5510 reg_rule->dfs_cac_ms))
5511 goto nla_put_failure;
5512
5513 nla_nest_end(msg, nl_reg_rule);
5514 }
5515
5516 nla_nest_end(msg, nl_reg_rules);
5517 return 0;
5518
5519 nla_put_failure:
5520 return -EMSGSIZE;
5521 }
5522
5523 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5524 {
5525 const struct ieee80211_regdomain *regdom = NULL;
5526 struct cfg80211_registered_device *rdev;
5527 struct wiphy *wiphy = NULL;
5528 struct sk_buff *msg;
5529 void *hdr;
5530
5531 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5532 if (!msg)
5533 return -ENOBUFS;
5534
5535 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5536 NL80211_CMD_GET_REG);
5537 if (!hdr)
5538 goto put_failure;
5539
5540 if (info->attrs[NL80211_ATTR_WIPHY]) {
5541 bool self_managed;
5542
5543 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5544 if (IS_ERR(rdev)) {
5545 nlmsg_free(msg);
5546 return PTR_ERR(rdev);
5547 }
5548
5549 wiphy = &rdev->wiphy;
5550 self_managed = wiphy->regulatory_flags &
5551 REGULATORY_WIPHY_SELF_MANAGED;
5552 regdom = get_wiphy_regdom(wiphy);
5553
5554 /* a self-managed-reg device must have a private regdom */
5555 if (WARN_ON(!regdom && self_managed)) {
5556 nlmsg_free(msg);
5557 return -EINVAL;
5558 }
5559
5560 if (regdom &&
5561 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5562 goto nla_put_failure;
5563 }
5564
5565 if (!wiphy && reg_last_request_cell_base() &&
5566 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5567 NL80211_USER_REG_HINT_CELL_BASE))
5568 goto nla_put_failure;
5569
5570 rcu_read_lock();
5571
5572 if (!regdom)
5573 regdom = rcu_dereference(cfg80211_regdomain);
5574
5575 if (nl80211_put_regdom(regdom, msg))
5576 goto nla_put_failure_rcu;
5577
5578 rcu_read_unlock();
5579
5580 genlmsg_end(msg, hdr);
5581 return genlmsg_reply(msg, info);
5582
5583 nla_put_failure_rcu:
5584 rcu_read_unlock();
5585 nla_put_failure:
5586 genlmsg_cancel(msg, hdr);
5587 put_failure:
5588 nlmsg_free(msg);
5589 return -EMSGSIZE;
5590 }
5591
5592 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5593 u32 seq, int flags, struct wiphy *wiphy,
5594 const struct ieee80211_regdomain *regdom)
5595 {
5596 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5597 NL80211_CMD_GET_REG);
5598
5599 if (!hdr)
5600 return -1;
5601
5602 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5603
5604 if (nl80211_put_regdom(regdom, msg))
5605 goto nla_put_failure;
5606
5607 if (!wiphy && reg_last_request_cell_base() &&
5608 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5609 NL80211_USER_REG_HINT_CELL_BASE))
5610 goto nla_put_failure;
5611
5612 if (wiphy &&
5613 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5614 goto nla_put_failure;
5615
5616 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5617 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5618 goto nla_put_failure;
5619
5620 genlmsg_end(msg, hdr);
5621 return 0;
5622
5623 nla_put_failure:
5624 genlmsg_cancel(msg, hdr);
5625 return -EMSGSIZE;
5626 }
5627
5628 static int nl80211_get_reg_dump(struct sk_buff *skb,
5629 struct netlink_callback *cb)
5630 {
5631 const struct ieee80211_regdomain *regdom = NULL;
5632 struct cfg80211_registered_device *rdev;
5633 int err, reg_idx, start = cb->args[2];
5634
5635 rtnl_lock();
5636
5637 if (cfg80211_regdomain && start == 0) {
5638 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5639 NLM_F_MULTI, NULL,
5640 rtnl_dereference(cfg80211_regdomain));
5641 if (err < 0)
5642 goto out_err;
5643 }
5644
5645 /* the global regdom is idx 0 */
5646 reg_idx = 1;
5647 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5648 regdom = get_wiphy_regdom(&rdev->wiphy);
5649 if (!regdom)
5650 continue;
5651
5652 if (++reg_idx <= start)
5653 continue;
5654
5655 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5656 NLM_F_MULTI, &rdev->wiphy, regdom);
5657 if (err < 0) {
5658 reg_idx--;
5659 break;
5660 }
5661 }
5662
5663 cb->args[2] = reg_idx;
5664 err = skb->len;
5665 out_err:
5666 rtnl_unlock();
5667 return err;
5668 }
5669
5670 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5671 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5672 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5673 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5674 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5675 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5676 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5677 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5678 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5679 };
5680
5681 static int parse_reg_rule(struct nlattr *tb[],
5682 struct ieee80211_reg_rule *reg_rule)
5683 {
5684 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5685 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5686
5687 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5688 return -EINVAL;
5689 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5690 return -EINVAL;
5691 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5692 return -EINVAL;
5693 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5694 return -EINVAL;
5695 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5696 return -EINVAL;
5697
5698 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5699
5700 freq_range->start_freq_khz =
5701 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5702 freq_range->end_freq_khz =
5703 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5704 freq_range->max_bandwidth_khz =
5705 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5706
5707 power_rule->max_eirp =
5708 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5709
5710 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5711 power_rule->max_antenna_gain =
5712 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5713
5714 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5715 reg_rule->dfs_cac_ms =
5716 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5717
5718 return 0;
5719 }
5720
5721 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5722 {
5723 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5724 struct nlattr *nl_reg_rule;
5725 char *alpha2;
5726 int rem_reg_rules, r;
5727 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5728 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5729 struct ieee80211_regdomain *rd;
5730
5731 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5732 return -EINVAL;
5733
5734 if (!info->attrs[NL80211_ATTR_REG_RULES])
5735 return -EINVAL;
5736
5737 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5738
5739 if (info->attrs[NL80211_ATTR_DFS_REGION])
5740 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5741
5742 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5743 rem_reg_rules) {
5744 num_rules++;
5745 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5746 return -EINVAL;
5747 }
5748
5749 if (!reg_is_valid_request(alpha2))
5750 return -EINVAL;
5751
5752 size_of_regd = sizeof(struct ieee80211_regdomain) +
5753 num_rules * sizeof(struct ieee80211_reg_rule);
5754
5755 rd = kzalloc(size_of_regd, GFP_KERNEL);
5756 if (!rd)
5757 return -ENOMEM;
5758
5759 rd->n_reg_rules = num_rules;
5760 rd->alpha2[0] = alpha2[0];
5761 rd->alpha2[1] = alpha2[1];
5762
5763 /*
5764 * Disable DFS master mode if the DFS region was
5765 * not supported or known on this kernel.
5766 */
5767 if (reg_supported_dfs_region(dfs_region))
5768 rd->dfs_region = dfs_region;
5769
5770 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5771 rem_reg_rules) {
5772 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5773 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5774 reg_rule_policy);
5775 if (r)
5776 goto bad_reg;
5777 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5778 if (r)
5779 goto bad_reg;
5780
5781 rule_idx++;
5782
5783 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5784 r = -EINVAL;
5785 goto bad_reg;
5786 }
5787 }
5788
5789 r = set_regdom(rd, REGD_SOURCE_CRDA);
5790 /* set_regdom took ownership */
5791 rd = NULL;
5792
5793 bad_reg:
5794 kfree(rd);
5795 return r;
5796 }
5797 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5798
5799 static int validate_scan_freqs(struct nlattr *freqs)
5800 {
5801 struct nlattr *attr1, *attr2;
5802 int n_channels = 0, tmp1, tmp2;
5803
5804 nla_for_each_nested(attr1, freqs, tmp1) {
5805 n_channels++;
5806 /*
5807 * Some hardware has a limited channel list for
5808 * scanning, and it is pretty much nonsensical
5809 * to scan for a channel twice, so disallow that
5810 * and don't require drivers to check that the
5811 * channel list they get isn't longer than what
5812 * they can scan, as long as they can scan all
5813 * the channels they registered at once.
5814 */
5815 nla_for_each_nested(attr2, freqs, tmp2)
5816 if (attr1 != attr2 &&
5817 nla_get_u32(attr1) == nla_get_u32(attr2))
5818 return 0;
5819 }
5820
5821 return n_channels;
5822 }
5823
5824 static bool is_band_valid(struct wiphy *wiphy, enum ieee80211_band b)
5825 {
5826 return b < IEEE80211_NUM_BANDS && wiphy->bands[b];
5827 }
5828
5829 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
5830 struct cfg80211_bss_selection *bss_select)
5831 {
5832 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
5833 struct nlattr *nest;
5834 int err;
5835 bool found = false;
5836 int i;
5837
5838 /* only process one nested attribute */
5839 nest = nla_data(nla);
5840 if (!nla_ok(nest, nla_len(nest)))
5841 return -EINVAL;
5842
5843 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
5844 nla_len(nest), nl80211_bss_select_policy);
5845 if (err)
5846 return err;
5847
5848 /* only one attribute may be given */
5849 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
5850 if (attr[i]) {
5851 if (found)
5852 return -EINVAL;
5853 found = true;
5854 }
5855 }
5856
5857 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
5858
5859 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
5860 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
5861
5862 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
5863 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
5864 bss_select->param.band_pref =
5865 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
5866 if (!is_band_valid(wiphy, bss_select->param.band_pref))
5867 return -EINVAL;
5868 }
5869
5870 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
5871 struct nl80211_bss_select_rssi_adjust *adj_param;
5872
5873 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
5874 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
5875 bss_select->param.adjust.band = adj_param->band;
5876 bss_select->param.adjust.delta = adj_param->delta;
5877 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
5878 return -EINVAL;
5879 }
5880
5881 /* user-space did not provide behaviour attribute */
5882 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
5883 return -EINVAL;
5884
5885 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
5886 return -EINVAL;
5887
5888 return 0;
5889 }
5890
5891 static int nl80211_parse_random_mac(struct nlattr **attrs,
5892 u8 *mac_addr, u8 *mac_addr_mask)
5893 {
5894 int i;
5895
5896 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5897 eth_zero_addr(mac_addr);
5898 eth_zero_addr(mac_addr_mask);
5899 mac_addr[0] = 0x2;
5900 mac_addr_mask[0] = 0x3;
5901
5902 return 0;
5903 }
5904
5905 /* need both or none */
5906 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5907 return -EINVAL;
5908
5909 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5910 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5911
5912 /* don't allow or configure an mcast address */
5913 if (!is_multicast_ether_addr(mac_addr_mask) ||
5914 is_multicast_ether_addr(mac_addr))
5915 return -EINVAL;
5916
5917 /*
5918 * allow users to pass a MAC address that has bits set outside
5919 * of the mask, but don't bother drivers with having to deal
5920 * with such bits
5921 */
5922 for (i = 0; i < ETH_ALEN; i++)
5923 mac_addr[i] &= mac_addr_mask[i];
5924
5925 return 0;
5926 }
5927
5928 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5929 {
5930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5931 struct wireless_dev *wdev = info->user_ptr[1];
5932 struct cfg80211_scan_request *request;
5933 struct nlattr *attr;
5934 struct wiphy *wiphy;
5935 int err, tmp, n_ssids = 0, n_channels, i;
5936 size_t ie_len;
5937
5938 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5939 return -EINVAL;
5940
5941 wiphy = &rdev->wiphy;
5942
5943 if (!rdev->ops->scan)
5944 return -EOPNOTSUPP;
5945
5946 if (rdev->scan_req || rdev->scan_msg) {
5947 err = -EBUSY;
5948 goto unlock;
5949 }
5950
5951 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5952 n_channels = validate_scan_freqs(
5953 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5954 if (!n_channels) {
5955 err = -EINVAL;
5956 goto unlock;
5957 }
5958 } else {
5959 n_channels = ieee80211_get_num_supported_channels(wiphy);
5960 }
5961
5962 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5963 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5964 n_ssids++;
5965
5966 if (n_ssids > wiphy->max_scan_ssids) {
5967 err = -EINVAL;
5968 goto unlock;
5969 }
5970
5971 if (info->attrs[NL80211_ATTR_IE])
5972 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5973 else
5974 ie_len = 0;
5975
5976 if (ie_len > wiphy->max_scan_ie_len) {
5977 err = -EINVAL;
5978 goto unlock;
5979 }
5980
5981 request = kzalloc(sizeof(*request)
5982 + sizeof(*request->ssids) * n_ssids
5983 + sizeof(*request->channels) * n_channels
5984 + ie_len, GFP_KERNEL);
5985 if (!request) {
5986 err = -ENOMEM;
5987 goto unlock;
5988 }
5989
5990 if (n_ssids)
5991 request->ssids = (void *)&request->channels[n_channels];
5992 request->n_ssids = n_ssids;
5993 if (ie_len) {
5994 if (n_ssids)
5995 request->ie = (void *)(request->ssids + n_ssids);
5996 else
5997 request->ie = (void *)(request->channels + n_channels);
5998 }
5999
6000 i = 0;
6001 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6002 /* user specified, bail out if channel not found */
6003 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6004 struct ieee80211_channel *chan;
6005
6006 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6007
6008 if (!chan) {
6009 err = -EINVAL;
6010 goto out_free;
6011 }
6012
6013 /* ignore disabled channels */
6014 if (chan->flags & IEEE80211_CHAN_DISABLED)
6015 continue;
6016
6017 request->channels[i] = chan;
6018 i++;
6019 }
6020 } else {
6021 enum ieee80211_band band;
6022
6023 /* all channels */
6024 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6025 int j;
6026 if (!wiphy->bands[band])
6027 continue;
6028 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6029 struct ieee80211_channel *chan;
6030
6031 chan = &wiphy->bands[band]->channels[j];
6032
6033 if (chan->flags & IEEE80211_CHAN_DISABLED)
6034 continue;
6035
6036 request->channels[i] = chan;
6037 i++;
6038 }
6039 }
6040 }
6041
6042 if (!i) {
6043 err = -EINVAL;
6044 goto out_free;
6045 }
6046
6047 request->n_channels = i;
6048
6049 i = 0;
6050 if (n_ssids) {
6051 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6052 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6053 err = -EINVAL;
6054 goto out_free;
6055 }
6056 request->ssids[i].ssid_len = nla_len(attr);
6057 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6058 i++;
6059 }
6060 }
6061
6062 if (info->attrs[NL80211_ATTR_IE]) {
6063 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6064 memcpy((void *)request->ie,
6065 nla_data(info->attrs[NL80211_ATTR_IE]),
6066 request->ie_len);
6067 }
6068
6069 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
6070 if (wiphy->bands[i])
6071 request->rates[i] =
6072 (1 << wiphy->bands[i]->n_bitrates) - 1;
6073
6074 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6075 nla_for_each_nested(attr,
6076 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6077 tmp) {
6078 enum ieee80211_band band = nla_type(attr);
6079
6080 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
6081 err = -EINVAL;
6082 goto out_free;
6083 }
6084
6085 if (!wiphy->bands[band])
6086 continue;
6087
6088 err = ieee80211_get_ratemask(wiphy->bands[band],
6089 nla_data(attr),
6090 nla_len(attr),
6091 &request->rates[band]);
6092 if (err)
6093 goto out_free;
6094 }
6095 }
6096
6097 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6098 request->flags = nla_get_u32(
6099 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6100 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6101 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6102 err = -EOPNOTSUPP;
6103 goto out_free;
6104 }
6105
6106 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6107 if (!(wiphy->features &
6108 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6109 err = -EOPNOTSUPP;
6110 goto out_free;
6111 }
6112
6113 if (wdev->current_bss) {
6114 err = -EOPNOTSUPP;
6115 goto out_free;
6116 }
6117
6118 err = nl80211_parse_random_mac(info->attrs,
6119 request->mac_addr,
6120 request->mac_addr_mask);
6121 if (err)
6122 goto out_free;
6123 }
6124 }
6125
6126 request->no_cck =
6127 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6128
6129 if (info->attrs[NL80211_ATTR_MAC])
6130 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6131 ETH_ALEN);
6132 else
6133 eth_broadcast_addr(request->bssid);
6134
6135 request->wdev = wdev;
6136 request->wiphy = &rdev->wiphy;
6137 request->scan_start = jiffies;
6138
6139 rdev->scan_req = request;
6140 err = rdev_scan(rdev, request);
6141
6142 if (!err) {
6143 nl80211_send_scan_start(rdev, wdev);
6144 if (wdev->netdev)
6145 dev_hold(wdev->netdev);
6146 } else {
6147 out_free:
6148 rdev->scan_req = NULL;
6149 kfree(request);
6150 }
6151
6152 unlock:
6153 return err;
6154 }
6155
6156 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6157 {
6158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6159 struct wireless_dev *wdev = info->user_ptr[1];
6160
6161 if (!rdev->ops->abort_scan)
6162 return -EOPNOTSUPP;
6163
6164 if (rdev->scan_msg)
6165 return 0;
6166
6167 if (!rdev->scan_req)
6168 return -ENOENT;
6169
6170 rdev_abort_scan(rdev, wdev);
6171 return 0;
6172 }
6173
6174 static int
6175 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6176 struct cfg80211_sched_scan_request *request,
6177 struct nlattr **attrs)
6178 {
6179 int tmp, err, i = 0;
6180 struct nlattr *attr;
6181
6182 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6183 u32 interval;
6184
6185 /*
6186 * If scan plans are not specified,
6187 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6188 * case one scan plan will be set with the specified scan
6189 * interval and infinite number of iterations.
6190 */
6191 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6192 return -EINVAL;
6193
6194 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6195 if (!interval)
6196 return -EINVAL;
6197
6198 request->scan_plans[0].interval =
6199 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6200 if (!request->scan_plans[0].interval)
6201 return -EINVAL;
6202
6203 if (request->scan_plans[0].interval >
6204 wiphy->max_sched_scan_plan_interval)
6205 request->scan_plans[0].interval =
6206 wiphy->max_sched_scan_plan_interval;
6207
6208 return 0;
6209 }
6210
6211 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6212 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6213
6214 if (WARN_ON(i >= n_plans))
6215 return -EINVAL;
6216
6217 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6218 nla_data(attr), nla_len(attr),
6219 nl80211_plan_policy);
6220 if (err)
6221 return err;
6222
6223 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6224 return -EINVAL;
6225
6226 request->scan_plans[i].interval =
6227 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6228 if (!request->scan_plans[i].interval ||
6229 request->scan_plans[i].interval >
6230 wiphy->max_sched_scan_plan_interval)
6231 return -EINVAL;
6232
6233 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6234 request->scan_plans[i].iterations =
6235 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6236 if (!request->scan_plans[i].iterations ||
6237 (request->scan_plans[i].iterations >
6238 wiphy->max_sched_scan_plan_iterations))
6239 return -EINVAL;
6240 } else if (i < n_plans - 1) {
6241 /*
6242 * All scan plans but the last one must specify
6243 * a finite number of iterations
6244 */
6245 return -EINVAL;
6246 }
6247
6248 i++;
6249 }
6250
6251 /*
6252 * The last scan plan must not specify the number of
6253 * iterations, it is supposed to run infinitely
6254 */
6255 if (request->scan_plans[n_plans - 1].iterations)
6256 return -EINVAL;
6257
6258 return 0;
6259 }
6260
6261 static struct cfg80211_sched_scan_request *
6262 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6263 struct nlattr **attrs)
6264 {
6265 struct cfg80211_sched_scan_request *request;
6266 struct nlattr *attr;
6267 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6268 enum ieee80211_band band;
6269 size_t ie_len;
6270 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6271 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6272
6273 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6274 return ERR_PTR(-EINVAL);
6275
6276 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6277 n_channels = validate_scan_freqs(
6278 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6279 if (!n_channels)
6280 return ERR_PTR(-EINVAL);
6281 } else {
6282 n_channels = ieee80211_get_num_supported_channels(wiphy);
6283 }
6284
6285 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6286 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6287 tmp)
6288 n_ssids++;
6289
6290 if (n_ssids > wiphy->max_sched_scan_ssids)
6291 return ERR_PTR(-EINVAL);
6292
6293 /*
6294 * First, count the number of 'real' matchsets. Due to an issue with
6295 * the old implementation, matchsets containing only the RSSI attribute
6296 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6297 * RSSI for all matchsets, rather than their own matchset for reporting
6298 * all APs with a strong RSSI. This is needed to be compatible with
6299 * older userspace that treated a matchset with only the RSSI as the
6300 * global RSSI for all other matchsets - if there are other matchsets.
6301 */
6302 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6303 nla_for_each_nested(attr,
6304 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6305 tmp) {
6306 struct nlattr *rssi;
6307
6308 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6309 nla_data(attr), nla_len(attr),
6310 nl80211_match_policy);
6311 if (err)
6312 return ERR_PTR(err);
6313 /* add other standalone attributes here */
6314 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6315 n_match_sets++;
6316 continue;
6317 }
6318 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6319 if (rssi)
6320 default_match_rssi = nla_get_s32(rssi);
6321 }
6322 }
6323
6324 /* However, if there's no other matchset, add the RSSI one */
6325 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6326 n_match_sets = 1;
6327
6328 if (n_match_sets > wiphy->max_match_sets)
6329 return ERR_PTR(-EINVAL);
6330
6331 if (attrs[NL80211_ATTR_IE])
6332 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6333 else
6334 ie_len = 0;
6335
6336 if (ie_len > wiphy->max_sched_scan_ie_len)
6337 return ERR_PTR(-EINVAL);
6338
6339 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6340 /*
6341 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6342 * each scan plan already specifies its own interval
6343 */
6344 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6345 return ERR_PTR(-EINVAL);
6346
6347 nla_for_each_nested(attr,
6348 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6349 n_plans++;
6350 } else {
6351 /*
6352 * The scan interval attribute is kept for backward
6353 * compatibility. If no scan plans are specified and sched scan
6354 * interval is specified, one scan plan will be set with this
6355 * scan interval and infinite number of iterations.
6356 */
6357 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6358 return ERR_PTR(-EINVAL);
6359
6360 n_plans = 1;
6361 }
6362
6363 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6364 return ERR_PTR(-EINVAL);
6365
6366 request = kzalloc(sizeof(*request)
6367 + sizeof(*request->ssids) * n_ssids
6368 + sizeof(*request->match_sets) * n_match_sets
6369 + sizeof(*request->scan_plans) * n_plans
6370 + sizeof(*request->channels) * n_channels
6371 + ie_len, GFP_KERNEL);
6372 if (!request)
6373 return ERR_PTR(-ENOMEM);
6374
6375 if (n_ssids)
6376 request->ssids = (void *)&request->channels[n_channels];
6377 request->n_ssids = n_ssids;
6378 if (ie_len) {
6379 if (n_ssids)
6380 request->ie = (void *)(request->ssids + n_ssids);
6381 else
6382 request->ie = (void *)(request->channels + n_channels);
6383 }
6384
6385 if (n_match_sets) {
6386 if (request->ie)
6387 request->match_sets = (void *)(request->ie + ie_len);
6388 else if (n_ssids)
6389 request->match_sets =
6390 (void *)(request->ssids + n_ssids);
6391 else
6392 request->match_sets =
6393 (void *)(request->channels + n_channels);
6394 }
6395 request->n_match_sets = n_match_sets;
6396
6397 if (n_match_sets)
6398 request->scan_plans = (void *)(request->match_sets +
6399 n_match_sets);
6400 else if (request->ie)
6401 request->scan_plans = (void *)(request->ie + ie_len);
6402 else if (n_ssids)
6403 request->scan_plans = (void *)(request->ssids + n_ssids);
6404 else
6405 request->scan_plans = (void *)(request->channels + n_channels);
6406
6407 request->n_scan_plans = n_plans;
6408
6409 i = 0;
6410 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6411 /* user specified, bail out if channel not found */
6412 nla_for_each_nested(attr,
6413 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6414 tmp) {
6415 struct ieee80211_channel *chan;
6416
6417 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6418
6419 if (!chan) {
6420 err = -EINVAL;
6421 goto out_free;
6422 }
6423
6424 /* ignore disabled channels */
6425 if (chan->flags & IEEE80211_CHAN_DISABLED)
6426 continue;
6427
6428 request->channels[i] = chan;
6429 i++;
6430 }
6431 } else {
6432 /* all channels */
6433 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6434 int j;
6435 if (!wiphy->bands[band])
6436 continue;
6437 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6438 struct ieee80211_channel *chan;
6439
6440 chan = &wiphy->bands[band]->channels[j];
6441
6442 if (chan->flags & IEEE80211_CHAN_DISABLED)
6443 continue;
6444
6445 request->channels[i] = chan;
6446 i++;
6447 }
6448 }
6449 }
6450
6451 if (!i) {
6452 err = -EINVAL;
6453 goto out_free;
6454 }
6455
6456 request->n_channels = i;
6457
6458 i = 0;
6459 if (n_ssids) {
6460 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6461 tmp) {
6462 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6463 err = -EINVAL;
6464 goto out_free;
6465 }
6466 request->ssids[i].ssid_len = nla_len(attr);
6467 memcpy(request->ssids[i].ssid, nla_data(attr),
6468 nla_len(attr));
6469 i++;
6470 }
6471 }
6472
6473 i = 0;
6474 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6475 nla_for_each_nested(attr,
6476 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6477 tmp) {
6478 struct nlattr *ssid, *rssi;
6479
6480 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6481 nla_data(attr), nla_len(attr),
6482 nl80211_match_policy);
6483 if (err)
6484 goto out_free;
6485 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6486 if (ssid) {
6487 if (WARN_ON(i >= n_match_sets)) {
6488 /* this indicates a programming error,
6489 * the loop above should have verified
6490 * things properly
6491 */
6492 err = -EINVAL;
6493 goto out_free;
6494 }
6495
6496 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6497 err = -EINVAL;
6498 goto out_free;
6499 }
6500 memcpy(request->match_sets[i].ssid.ssid,
6501 nla_data(ssid), nla_len(ssid));
6502 request->match_sets[i].ssid.ssid_len =
6503 nla_len(ssid);
6504 /* special attribute - old implemenation w/a */
6505 request->match_sets[i].rssi_thold =
6506 default_match_rssi;
6507 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6508 if (rssi)
6509 request->match_sets[i].rssi_thold =
6510 nla_get_s32(rssi);
6511 }
6512 i++;
6513 }
6514
6515 /* there was no other matchset, so the RSSI one is alone */
6516 if (i == 0 && n_match_sets)
6517 request->match_sets[0].rssi_thold = default_match_rssi;
6518
6519 request->min_rssi_thold = INT_MAX;
6520 for (i = 0; i < n_match_sets; i++)
6521 request->min_rssi_thold =
6522 min(request->match_sets[i].rssi_thold,
6523 request->min_rssi_thold);
6524 } else {
6525 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6526 }
6527
6528 if (ie_len) {
6529 request->ie_len = ie_len;
6530 memcpy((void *)request->ie,
6531 nla_data(attrs[NL80211_ATTR_IE]),
6532 request->ie_len);
6533 }
6534
6535 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6536 request->flags = nla_get_u32(
6537 attrs[NL80211_ATTR_SCAN_FLAGS]);
6538 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6539 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6540 err = -EOPNOTSUPP;
6541 goto out_free;
6542 }
6543
6544 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6545 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6546
6547 if (!wdev) /* must be net-detect */
6548 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6549
6550 if (!(wiphy->features & flg)) {
6551 err = -EOPNOTSUPP;
6552 goto out_free;
6553 }
6554
6555 if (wdev && wdev->current_bss) {
6556 err = -EOPNOTSUPP;
6557 goto out_free;
6558 }
6559
6560 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6561 request->mac_addr_mask);
6562 if (err)
6563 goto out_free;
6564 }
6565 }
6566
6567 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6568 request->delay =
6569 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6570
6571 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6572 if (err)
6573 goto out_free;
6574
6575 request->scan_start = jiffies;
6576
6577 return request;
6578
6579 out_free:
6580 kfree(request);
6581 return ERR_PTR(err);
6582 }
6583
6584 static int nl80211_start_sched_scan(struct sk_buff *skb,
6585 struct genl_info *info)
6586 {
6587 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6588 struct net_device *dev = info->user_ptr[1];
6589 struct wireless_dev *wdev = dev->ieee80211_ptr;
6590 struct cfg80211_sched_scan_request *sched_scan_req;
6591 int err;
6592
6593 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6594 !rdev->ops->sched_scan_start)
6595 return -EOPNOTSUPP;
6596
6597 if (rdev->sched_scan_req)
6598 return -EINPROGRESS;
6599
6600 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6601 info->attrs);
6602
6603 err = PTR_ERR_OR_ZERO(sched_scan_req);
6604 if (err)
6605 goto out_err;
6606
6607 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6608 if (err)
6609 goto out_free;
6610
6611 sched_scan_req->dev = dev;
6612 sched_scan_req->wiphy = &rdev->wiphy;
6613
6614 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6615 sched_scan_req->owner_nlportid = info->snd_portid;
6616
6617 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6618
6619 nl80211_send_sched_scan(rdev, dev,
6620 NL80211_CMD_START_SCHED_SCAN);
6621 return 0;
6622
6623 out_free:
6624 kfree(sched_scan_req);
6625 out_err:
6626 return err;
6627 }
6628
6629 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6630 struct genl_info *info)
6631 {
6632 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6633
6634 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6635 !rdev->ops->sched_scan_stop)
6636 return -EOPNOTSUPP;
6637
6638 return __cfg80211_stop_sched_scan(rdev, false);
6639 }
6640
6641 static int nl80211_start_radar_detection(struct sk_buff *skb,
6642 struct genl_info *info)
6643 {
6644 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6645 struct net_device *dev = info->user_ptr[1];
6646 struct wireless_dev *wdev = dev->ieee80211_ptr;
6647 struct cfg80211_chan_def chandef;
6648 enum nl80211_dfs_regions dfs_region;
6649 unsigned int cac_time_ms;
6650 int err;
6651
6652 dfs_region = reg_get_dfs_region(wdev->wiphy);
6653 if (dfs_region == NL80211_DFS_UNSET)
6654 return -EINVAL;
6655
6656 err = nl80211_parse_chandef(rdev, info, &chandef);
6657 if (err)
6658 return err;
6659
6660 if (netif_carrier_ok(dev))
6661 return -EBUSY;
6662
6663 if (wdev->cac_started)
6664 return -EBUSY;
6665
6666 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6667 wdev->iftype);
6668 if (err < 0)
6669 return err;
6670
6671 if (err == 0)
6672 return -EINVAL;
6673
6674 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6675 return -EINVAL;
6676
6677 if (!rdev->ops->start_radar_detection)
6678 return -EOPNOTSUPP;
6679
6680 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6681 if (WARN_ON(!cac_time_ms))
6682 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6683
6684 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6685 if (!err) {
6686 wdev->chandef = chandef;
6687 wdev->cac_started = true;
6688 wdev->cac_start_time = jiffies;
6689 wdev->cac_time_ms = cac_time_ms;
6690 }
6691 return err;
6692 }
6693
6694 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6695 {
6696 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6697 struct net_device *dev = info->user_ptr[1];
6698 struct wireless_dev *wdev = dev->ieee80211_ptr;
6699 struct cfg80211_csa_settings params;
6700 /* csa_attrs is defined static to avoid waste of stack size - this
6701 * function is called under RTNL lock, so this should not be a problem.
6702 */
6703 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6704 int err;
6705 bool need_new_beacon = false;
6706 int len, i;
6707 u32 cs_count;
6708
6709 if (!rdev->ops->channel_switch ||
6710 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6711 return -EOPNOTSUPP;
6712
6713 switch (dev->ieee80211_ptr->iftype) {
6714 case NL80211_IFTYPE_AP:
6715 case NL80211_IFTYPE_P2P_GO:
6716 need_new_beacon = true;
6717
6718 /* useless if AP is not running */
6719 if (!wdev->beacon_interval)
6720 return -ENOTCONN;
6721 break;
6722 case NL80211_IFTYPE_ADHOC:
6723 if (!wdev->ssid_len)
6724 return -ENOTCONN;
6725 break;
6726 case NL80211_IFTYPE_MESH_POINT:
6727 if (!wdev->mesh_id_len)
6728 return -ENOTCONN;
6729 break;
6730 default:
6731 return -EOPNOTSUPP;
6732 }
6733
6734 memset(&params, 0, sizeof(params));
6735
6736 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6737 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6738 return -EINVAL;
6739
6740 /* only important for AP, IBSS and mesh create IEs internally */
6741 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6742 return -EINVAL;
6743
6744 /* Even though the attribute is u32, the specification says
6745 * u8, so let's make sure we don't overflow.
6746 */
6747 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6748 if (cs_count > 255)
6749 return -EINVAL;
6750
6751 params.count = cs_count;
6752
6753 if (!need_new_beacon)
6754 goto skip_beacons;
6755
6756 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6757 if (err)
6758 return err;
6759
6760 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6761 info->attrs[NL80211_ATTR_CSA_IES],
6762 nl80211_policy);
6763 if (err)
6764 return err;
6765
6766 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6767 if (err)
6768 return err;
6769
6770 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6771 return -EINVAL;
6772
6773 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6774 if (!len || (len % sizeof(u16)))
6775 return -EINVAL;
6776
6777 params.n_counter_offsets_beacon = len / sizeof(u16);
6778 if (rdev->wiphy.max_num_csa_counters &&
6779 (params.n_counter_offsets_beacon >
6780 rdev->wiphy.max_num_csa_counters))
6781 return -EINVAL;
6782
6783 params.counter_offsets_beacon =
6784 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6785
6786 /* sanity checks - counters should fit and be the same */
6787 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6788 u16 offset = params.counter_offsets_beacon[i];
6789
6790 if (offset >= params.beacon_csa.tail_len)
6791 return -EINVAL;
6792
6793 if (params.beacon_csa.tail[offset] != params.count)
6794 return -EINVAL;
6795 }
6796
6797 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6798 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6799 if (!len || (len % sizeof(u16)))
6800 return -EINVAL;
6801
6802 params.n_counter_offsets_presp = len / sizeof(u16);
6803 if (rdev->wiphy.max_num_csa_counters &&
6804 (params.n_counter_offsets_beacon >
6805 rdev->wiphy.max_num_csa_counters))
6806 return -EINVAL;
6807
6808 params.counter_offsets_presp =
6809 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6810
6811 /* sanity checks - counters should fit and be the same */
6812 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6813 u16 offset = params.counter_offsets_presp[i];
6814
6815 if (offset >= params.beacon_csa.probe_resp_len)
6816 return -EINVAL;
6817
6818 if (params.beacon_csa.probe_resp[offset] !=
6819 params.count)
6820 return -EINVAL;
6821 }
6822 }
6823
6824 skip_beacons:
6825 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6826 if (err)
6827 return err;
6828
6829 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6830 wdev->iftype))
6831 return -EINVAL;
6832
6833 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6834 &params.chandef,
6835 wdev->iftype);
6836 if (err < 0)
6837 return err;
6838
6839 if (err > 0)
6840 params.radar_required = true;
6841
6842 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6843 params.block_tx = true;
6844
6845 wdev_lock(wdev);
6846 err = rdev_channel_switch(rdev, dev, &params);
6847 wdev_unlock(wdev);
6848
6849 return err;
6850 }
6851
6852 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6853 u32 seq, int flags,
6854 struct cfg80211_registered_device *rdev,
6855 struct wireless_dev *wdev,
6856 struct cfg80211_internal_bss *intbss)
6857 {
6858 struct cfg80211_bss *res = &intbss->pub;
6859 const struct cfg80211_bss_ies *ies;
6860 void *hdr;
6861 struct nlattr *bss;
6862
6863 ASSERT_WDEV_LOCK(wdev);
6864
6865 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6866 NL80211_CMD_NEW_SCAN_RESULTS);
6867 if (!hdr)
6868 return -1;
6869
6870 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6871
6872 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6873 goto nla_put_failure;
6874 if (wdev->netdev &&
6875 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6876 goto nla_put_failure;
6877 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6878 goto nla_put_failure;
6879
6880 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6881 if (!bss)
6882 goto nla_put_failure;
6883 if ((!is_zero_ether_addr(res->bssid) &&
6884 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6885 goto nla_put_failure;
6886
6887 rcu_read_lock();
6888 /* indicate whether we have probe response data or not */
6889 if (rcu_access_pointer(res->proberesp_ies) &&
6890 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6891 goto fail_unlock_rcu;
6892
6893 /* this pointer prefers to be pointed to probe response data
6894 * but is always valid
6895 */
6896 ies = rcu_dereference(res->ies);
6897 if (ies) {
6898 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6899 goto fail_unlock_rcu;
6900 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6901 ies->len, ies->data))
6902 goto fail_unlock_rcu;
6903 }
6904
6905 /* and this pointer is always (unless driver didn't know) beacon data */
6906 ies = rcu_dereference(res->beacon_ies);
6907 if (ies && ies->from_beacon) {
6908 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6909 goto fail_unlock_rcu;
6910 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6911 ies->len, ies->data))
6912 goto fail_unlock_rcu;
6913 }
6914 rcu_read_unlock();
6915
6916 if (res->beacon_interval &&
6917 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6918 goto nla_put_failure;
6919 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6920 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6921 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6922 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6923 jiffies_to_msecs(jiffies - intbss->ts)))
6924 goto nla_put_failure;
6925
6926 if (intbss->ts_boottime &&
6927 nla_put_u64(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
6928 intbss->ts_boottime))
6929 goto nla_put_failure;
6930
6931 switch (rdev->wiphy.signal_type) {
6932 case CFG80211_SIGNAL_TYPE_MBM:
6933 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6934 goto nla_put_failure;
6935 break;
6936 case CFG80211_SIGNAL_TYPE_UNSPEC:
6937 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6938 goto nla_put_failure;
6939 break;
6940 default:
6941 break;
6942 }
6943
6944 switch (wdev->iftype) {
6945 case NL80211_IFTYPE_P2P_CLIENT:
6946 case NL80211_IFTYPE_STATION:
6947 if (intbss == wdev->current_bss &&
6948 nla_put_u32(msg, NL80211_BSS_STATUS,
6949 NL80211_BSS_STATUS_ASSOCIATED))
6950 goto nla_put_failure;
6951 break;
6952 case NL80211_IFTYPE_ADHOC:
6953 if (intbss == wdev->current_bss &&
6954 nla_put_u32(msg, NL80211_BSS_STATUS,
6955 NL80211_BSS_STATUS_IBSS_JOINED))
6956 goto nla_put_failure;
6957 break;
6958 default:
6959 break;
6960 }
6961
6962 nla_nest_end(msg, bss);
6963
6964 genlmsg_end(msg, hdr);
6965 return 0;
6966
6967 fail_unlock_rcu:
6968 rcu_read_unlock();
6969 nla_put_failure:
6970 genlmsg_cancel(msg, hdr);
6971 return -EMSGSIZE;
6972 }
6973
6974 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6975 {
6976 struct cfg80211_registered_device *rdev;
6977 struct cfg80211_internal_bss *scan;
6978 struct wireless_dev *wdev;
6979 int start = cb->args[2], idx = 0;
6980 int err;
6981
6982 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6983 if (err)
6984 return err;
6985
6986 wdev_lock(wdev);
6987 spin_lock_bh(&rdev->bss_lock);
6988 cfg80211_bss_expire(rdev);
6989
6990 cb->seq = rdev->bss_generation;
6991
6992 list_for_each_entry(scan, &rdev->bss_list, list) {
6993 if (++idx <= start)
6994 continue;
6995 if (nl80211_send_bss(skb, cb,
6996 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6997 rdev, wdev, scan) < 0) {
6998 idx--;
6999 break;
7000 }
7001 }
7002
7003 spin_unlock_bh(&rdev->bss_lock);
7004 wdev_unlock(wdev);
7005
7006 cb->args[2] = idx;
7007 nl80211_finish_wdev_dump(rdev);
7008
7009 return skb->len;
7010 }
7011
7012 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7013 int flags, struct net_device *dev,
7014 bool allow_radio_stats,
7015 struct survey_info *survey)
7016 {
7017 void *hdr;
7018 struct nlattr *infoattr;
7019
7020 /* skip radio stats if userspace didn't request them */
7021 if (!survey->channel && !allow_radio_stats)
7022 return 0;
7023
7024 hdr = nl80211hdr_put(msg, portid, seq, flags,
7025 NL80211_CMD_NEW_SURVEY_RESULTS);
7026 if (!hdr)
7027 return -ENOMEM;
7028
7029 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7030 goto nla_put_failure;
7031
7032 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7033 if (!infoattr)
7034 goto nla_put_failure;
7035
7036 if (survey->channel &&
7037 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7038 survey->channel->center_freq))
7039 goto nla_put_failure;
7040
7041 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7042 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7043 goto nla_put_failure;
7044 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7045 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7046 goto nla_put_failure;
7047 if ((survey->filled & SURVEY_INFO_TIME) &&
7048 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
7049 survey->time))
7050 goto nla_put_failure;
7051 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7052 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7053 survey->time_busy))
7054 goto nla_put_failure;
7055 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7056 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7057 survey->time_ext_busy))
7058 goto nla_put_failure;
7059 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7060 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
7061 survey->time_rx))
7062 goto nla_put_failure;
7063 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7064 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
7065 survey->time_tx))
7066 goto nla_put_failure;
7067 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7068 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7069 survey->time_scan))
7070 goto nla_put_failure;
7071
7072 nla_nest_end(msg, infoattr);
7073
7074 genlmsg_end(msg, hdr);
7075 return 0;
7076
7077 nla_put_failure:
7078 genlmsg_cancel(msg, hdr);
7079 return -EMSGSIZE;
7080 }
7081
7082 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7083 {
7084 struct survey_info survey;
7085 struct cfg80211_registered_device *rdev;
7086 struct wireless_dev *wdev;
7087 int survey_idx = cb->args[2];
7088 int res;
7089 bool radio_stats;
7090
7091 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7092 if (res)
7093 return res;
7094
7095 /* prepare_wdev_dump parsed the attributes */
7096 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7097
7098 if (!wdev->netdev) {
7099 res = -EINVAL;
7100 goto out_err;
7101 }
7102
7103 if (!rdev->ops->dump_survey) {
7104 res = -EOPNOTSUPP;
7105 goto out_err;
7106 }
7107
7108 while (1) {
7109 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7110 if (res == -ENOENT)
7111 break;
7112 if (res)
7113 goto out_err;
7114
7115 /* don't send disabled channels, but do send non-channel data */
7116 if (survey.channel &&
7117 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7118 survey_idx++;
7119 continue;
7120 }
7121
7122 if (nl80211_send_survey(skb,
7123 NETLINK_CB(cb->skb).portid,
7124 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7125 wdev->netdev, radio_stats, &survey) < 0)
7126 goto out;
7127 survey_idx++;
7128 }
7129
7130 out:
7131 cb->args[2] = survey_idx;
7132 res = skb->len;
7133 out_err:
7134 nl80211_finish_wdev_dump(rdev);
7135 return res;
7136 }
7137
7138 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7139 {
7140 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7141 NL80211_WPA_VERSION_2));
7142 }
7143
7144 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7145 {
7146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7147 struct net_device *dev = info->user_ptr[1];
7148 struct ieee80211_channel *chan;
7149 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7150 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7151 enum nl80211_auth_type auth_type;
7152 struct key_parse key;
7153 bool local_state_change;
7154
7155 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7156 return -EINVAL;
7157
7158 if (!info->attrs[NL80211_ATTR_MAC])
7159 return -EINVAL;
7160
7161 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7162 return -EINVAL;
7163
7164 if (!info->attrs[NL80211_ATTR_SSID])
7165 return -EINVAL;
7166
7167 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7168 return -EINVAL;
7169
7170 err = nl80211_parse_key(info, &key);
7171 if (err)
7172 return err;
7173
7174 if (key.idx >= 0) {
7175 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7176 return -EINVAL;
7177 if (!key.p.key || !key.p.key_len)
7178 return -EINVAL;
7179 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7180 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7181 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7182 key.p.key_len != WLAN_KEY_LEN_WEP104))
7183 return -EINVAL;
7184 if (key.idx > 4)
7185 return -EINVAL;
7186 } else {
7187 key.p.key_len = 0;
7188 key.p.key = NULL;
7189 }
7190
7191 if (key.idx >= 0) {
7192 int i;
7193 bool ok = false;
7194 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7195 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7196 ok = true;
7197 break;
7198 }
7199 }
7200 if (!ok)
7201 return -EINVAL;
7202 }
7203
7204 if (!rdev->ops->auth)
7205 return -EOPNOTSUPP;
7206
7207 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7208 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7209 return -EOPNOTSUPP;
7210
7211 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7212 chan = nl80211_get_valid_chan(&rdev->wiphy,
7213 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7214 if (!chan)
7215 return -EINVAL;
7216
7217 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7218 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7219
7220 if (info->attrs[NL80211_ATTR_IE]) {
7221 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7222 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7223 }
7224
7225 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7226 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7227 return -EINVAL;
7228
7229 if (auth_type == NL80211_AUTHTYPE_SAE &&
7230 !info->attrs[NL80211_ATTR_SAE_DATA])
7231 return -EINVAL;
7232
7233 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7234 if (auth_type != NL80211_AUTHTYPE_SAE)
7235 return -EINVAL;
7236 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7237 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7238 /* need to include at least Auth Transaction and Status Code */
7239 if (sae_data_len < 4)
7240 return -EINVAL;
7241 }
7242
7243 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7244
7245 /*
7246 * Since we no longer track auth state, ignore
7247 * requests to only change local state.
7248 */
7249 if (local_state_change)
7250 return 0;
7251
7252 wdev_lock(dev->ieee80211_ptr);
7253 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7254 ssid, ssid_len, ie, ie_len,
7255 key.p.key, key.p.key_len, key.idx,
7256 sae_data, sae_data_len);
7257 wdev_unlock(dev->ieee80211_ptr);
7258 return err;
7259 }
7260
7261 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7262 struct genl_info *info,
7263 struct cfg80211_crypto_settings *settings,
7264 int cipher_limit)
7265 {
7266 memset(settings, 0, sizeof(*settings));
7267
7268 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7269
7270 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7271 u16 proto;
7272 proto = nla_get_u16(
7273 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7274 settings->control_port_ethertype = cpu_to_be16(proto);
7275 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7276 proto != ETH_P_PAE)
7277 return -EINVAL;
7278 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7279 settings->control_port_no_encrypt = true;
7280 } else
7281 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7282
7283 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7284 void *data;
7285 int len, i;
7286
7287 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7288 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7289 settings->n_ciphers_pairwise = len / sizeof(u32);
7290
7291 if (len % sizeof(u32))
7292 return -EINVAL;
7293
7294 if (settings->n_ciphers_pairwise > cipher_limit)
7295 return -EINVAL;
7296
7297 memcpy(settings->ciphers_pairwise, data, len);
7298
7299 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7300 if (!cfg80211_supported_cipher_suite(
7301 &rdev->wiphy,
7302 settings->ciphers_pairwise[i]))
7303 return -EINVAL;
7304 }
7305
7306 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7307 settings->cipher_group =
7308 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7309 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7310 settings->cipher_group))
7311 return -EINVAL;
7312 }
7313
7314 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7315 settings->wpa_versions =
7316 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7317 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7318 return -EINVAL;
7319 }
7320
7321 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7322 void *data;
7323 int len;
7324
7325 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7326 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7327 settings->n_akm_suites = len / sizeof(u32);
7328
7329 if (len % sizeof(u32))
7330 return -EINVAL;
7331
7332 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7333 return -EINVAL;
7334
7335 memcpy(settings->akm_suites, data, len);
7336 }
7337
7338 return 0;
7339 }
7340
7341 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7342 {
7343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7344 struct net_device *dev = info->user_ptr[1];
7345 struct ieee80211_channel *chan;
7346 struct cfg80211_assoc_request req = {};
7347 const u8 *bssid, *ssid;
7348 int err, ssid_len = 0;
7349
7350 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7351 return -EINVAL;
7352
7353 if (!info->attrs[NL80211_ATTR_MAC] ||
7354 !info->attrs[NL80211_ATTR_SSID] ||
7355 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7356 return -EINVAL;
7357
7358 if (!rdev->ops->assoc)
7359 return -EOPNOTSUPP;
7360
7361 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7363 return -EOPNOTSUPP;
7364
7365 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7366
7367 chan = nl80211_get_valid_chan(&rdev->wiphy,
7368 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7369 if (!chan)
7370 return -EINVAL;
7371
7372 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7373 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7374
7375 if (info->attrs[NL80211_ATTR_IE]) {
7376 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7377 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7378 }
7379
7380 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7381 enum nl80211_mfp mfp =
7382 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7383 if (mfp == NL80211_MFP_REQUIRED)
7384 req.use_mfp = true;
7385 else if (mfp != NL80211_MFP_NO)
7386 return -EINVAL;
7387 }
7388
7389 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7390 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7391
7392 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7393 req.flags |= ASSOC_REQ_DISABLE_HT;
7394
7395 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7396 memcpy(&req.ht_capa_mask,
7397 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7398 sizeof(req.ht_capa_mask));
7399
7400 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7401 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7402 return -EINVAL;
7403 memcpy(&req.ht_capa,
7404 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7405 sizeof(req.ht_capa));
7406 }
7407
7408 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7409 req.flags |= ASSOC_REQ_DISABLE_VHT;
7410
7411 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7412 memcpy(&req.vht_capa_mask,
7413 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7414 sizeof(req.vht_capa_mask));
7415
7416 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7417 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7418 return -EINVAL;
7419 memcpy(&req.vht_capa,
7420 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7421 sizeof(req.vht_capa));
7422 }
7423
7424 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7425 if (!((rdev->wiphy.features &
7426 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7427 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7428 !wiphy_ext_feature_isset(&rdev->wiphy,
7429 NL80211_EXT_FEATURE_RRM))
7430 return -EINVAL;
7431 req.flags |= ASSOC_REQ_USE_RRM;
7432 }
7433
7434 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7435 if (!err) {
7436 wdev_lock(dev->ieee80211_ptr);
7437 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7438 ssid, ssid_len, &req);
7439 wdev_unlock(dev->ieee80211_ptr);
7440 }
7441
7442 return err;
7443 }
7444
7445 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7446 {
7447 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7448 struct net_device *dev = info->user_ptr[1];
7449 const u8 *ie = NULL, *bssid;
7450 int ie_len = 0, err;
7451 u16 reason_code;
7452 bool local_state_change;
7453
7454 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7455 return -EINVAL;
7456
7457 if (!info->attrs[NL80211_ATTR_MAC])
7458 return -EINVAL;
7459
7460 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7461 return -EINVAL;
7462
7463 if (!rdev->ops->deauth)
7464 return -EOPNOTSUPP;
7465
7466 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7467 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7468 return -EOPNOTSUPP;
7469
7470 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7471
7472 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7473 if (reason_code == 0) {
7474 /* Reason Code 0 is reserved */
7475 return -EINVAL;
7476 }
7477
7478 if (info->attrs[NL80211_ATTR_IE]) {
7479 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7480 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7481 }
7482
7483 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7484
7485 wdev_lock(dev->ieee80211_ptr);
7486 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7487 local_state_change);
7488 wdev_unlock(dev->ieee80211_ptr);
7489 return err;
7490 }
7491
7492 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7493 {
7494 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7495 struct net_device *dev = info->user_ptr[1];
7496 const u8 *ie = NULL, *bssid;
7497 int ie_len = 0, err;
7498 u16 reason_code;
7499 bool local_state_change;
7500
7501 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7502 return -EINVAL;
7503
7504 if (!info->attrs[NL80211_ATTR_MAC])
7505 return -EINVAL;
7506
7507 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7508 return -EINVAL;
7509
7510 if (!rdev->ops->disassoc)
7511 return -EOPNOTSUPP;
7512
7513 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7514 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7515 return -EOPNOTSUPP;
7516
7517 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7518
7519 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7520 if (reason_code == 0) {
7521 /* Reason Code 0 is reserved */
7522 return -EINVAL;
7523 }
7524
7525 if (info->attrs[NL80211_ATTR_IE]) {
7526 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7527 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7528 }
7529
7530 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7531
7532 wdev_lock(dev->ieee80211_ptr);
7533 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7534 local_state_change);
7535 wdev_unlock(dev->ieee80211_ptr);
7536 return err;
7537 }
7538
7539 static bool
7540 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7541 int mcast_rate[IEEE80211_NUM_BANDS],
7542 int rateval)
7543 {
7544 struct wiphy *wiphy = &rdev->wiphy;
7545 bool found = false;
7546 int band, i;
7547
7548 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7549 struct ieee80211_supported_band *sband;
7550
7551 sband = wiphy->bands[band];
7552 if (!sband)
7553 continue;
7554
7555 for (i = 0; i < sband->n_bitrates; i++) {
7556 if (sband->bitrates[i].bitrate == rateval) {
7557 mcast_rate[band] = i + 1;
7558 found = true;
7559 break;
7560 }
7561 }
7562 }
7563
7564 return found;
7565 }
7566
7567 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7568 {
7569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7570 struct net_device *dev = info->user_ptr[1];
7571 struct cfg80211_ibss_params ibss;
7572 struct wiphy *wiphy;
7573 struct cfg80211_cached_keys *connkeys = NULL;
7574 int err;
7575
7576 memset(&ibss, 0, sizeof(ibss));
7577
7578 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7579 return -EINVAL;
7580
7581 if (!info->attrs[NL80211_ATTR_SSID] ||
7582 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7583 return -EINVAL;
7584
7585 ibss.beacon_interval = 100;
7586
7587 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7588 ibss.beacon_interval =
7589 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7590 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7591 return -EINVAL;
7592 }
7593
7594 if (!rdev->ops->join_ibss)
7595 return -EOPNOTSUPP;
7596
7597 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7598 return -EOPNOTSUPP;
7599
7600 wiphy = &rdev->wiphy;
7601
7602 if (info->attrs[NL80211_ATTR_MAC]) {
7603 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7604
7605 if (!is_valid_ether_addr(ibss.bssid))
7606 return -EINVAL;
7607 }
7608 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7609 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7610
7611 if (info->attrs[NL80211_ATTR_IE]) {
7612 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7613 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7614 }
7615
7616 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7617 if (err)
7618 return err;
7619
7620 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7621 NL80211_IFTYPE_ADHOC))
7622 return -EINVAL;
7623
7624 switch (ibss.chandef.width) {
7625 case NL80211_CHAN_WIDTH_5:
7626 case NL80211_CHAN_WIDTH_10:
7627 case NL80211_CHAN_WIDTH_20_NOHT:
7628 break;
7629 case NL80211_CHAN_WIDTH_20:
7630 case NL80211_CHAN_WIDTH_40:
7631 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7632 return -EINVAL;
7633 break;
7634 case NL80211_CHAN_WIDTH_80:
7635 case NL80211_CHAN_WIDTH_80P80:
7636 case NL80211_CHAN_WIDTH_160:
7637 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7638 return -EINVAL;
7639 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7640 NL80211_EXT_FEATURE_VHT_IBSS))
7641 return -EINVAL;
7642 break;
7643 default:
7644 return -EINVAL;
7645 }
7646
7647 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7648 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7649
7650 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7651 u8 *rates =
7652 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7653 int n_rates =
7654 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7655 struct ieee80211_supported_band *sband =
7656 wiphy->bands[ibss.chandef.chan->band];
7657
7658 err = ieee80211_get_ratemask(sband, rates, n_rates,
7659 &ibss.basic_rates);
7660 if (err)
7661 return err;
7662 }
7663
7664 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7665 memcpy(&ibss.ht_capa_mask,
7666 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7667 sizeof(ibss.ht_capa_mask));
7668
7669 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7670 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7671 return -EINVAL;
7672 memcpy(&ibss.ht_capa,
7673 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7674 sizeof(ibss.ht_capa));
7675 }
7676
7677 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7678 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7679 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7680 return -EINVAL;
7681
7682 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7683 bool no_ht = false;
7684
7685 connkeys = nl80211_parse_connkeys(rdev,
7686 info->attrs[NL80211_ATTR_KEYS],
7687 &no_ht);
7688 if (IS_ERR(connkeys))
7689 return PTR_ERR(connkeys);
7690
7691 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7692 no_ht) {
7693 kzfree(connkeys);
7694 return -EINVAL;
7695 }
7696 }
7697
7698 ibss.control_port =
7699 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7700
7701 ibss.userspace_handles_dfs =
7702 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7703
7704 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7705 if (err)
7706 kzfree(connkeys);
7707 return err;
7708 }
7709
7710 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7711 {
7712 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7713 struct net_device *dev = info->user_ptr[1];
7714
7715 if (!rdev->ops->leave_ibss)
7716 return -EOPNOTSUPP;
7717
7718 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7719 return -EOPNOTSUPP;
7720
7721 return cfg80211_leave_ibss(rdev, dev, false);
7722 }
7723
7724 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7725 {
7726 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7727 struct net_device *dev = info->user_ptr[1];
7728 int mcast_rate[IEEE80211_NUM_BANDS];
7729 u32 nla_rate;
7730 int err;
7731
7732 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7733 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7734 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7735 return -EOPNOTSUPP;
7736
7737 if (!rdev->ops->set_mcast_rate)
7738 return -EOPNOTSUPP;
7739
7740 memset(mcast_rate, 0, sizeof(mcast_rate));
7741
7742 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7743 return -EINVAL;
7744
7745 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7746 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7747 return -EINVAL;
7748
7749 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7750
7751 return err;
7752 }
7753
7754 static struct sk_buff *
7755 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7756 struct wireless_dev *wdev, int approxlen,
7757 u32 portid, u32 seq, enum nl80211_commands cmd,
7758 enum nl80211_attrs attr,
7759 const struct nl80211_vendor_cmd_info *info,
7760 gfp_t gfp)
7761 {
7762 struct sk_buff *skb;
7763 void *hdr;
7764 struct nlattr *data;
7765
7766 skb = nlmsg_new(approxlen + 100, gfp);
7767 if (!skb)
7768 return NULL;
7769
7770 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7771 if (!hdr) {
7772 kfree_skb(skb);
7773 return NULL;
7774 }
7775
7776 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7777 goto nla_put_failure;
7778
7779 if (info) {
7780 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7781 info->vendor_id))
7782 goto nla_put_failure;
7783 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7784 info->subcmd))
7785 goto nla_put_failure;
7786 }
7787
7788 if (wdev) {
7789 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7790 wdev_id(wdev)))
7791 goto nla_put_failure;
7792 if (wdev->netdev &&
7793 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7794 wdev->netdev->ifindex))
7795 goto nla_put_failure;
7796 }
7797
7798 data = nla_nest_start(skb, attr);
7799
7800 ((void **)skb->cb)[0] = rdev;
7801 ((void **)skb->cb)[1] = hdr;
7802 ((void **)skb->cb)[2] = data;
7803
7804 return skb;
7805
7806 nla_put_failure:
7807 kfree_skb(skb);
7808 return NULL;
7809 }
7810
7811 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7812 struct wireless_dev *wdev,
7813 enum nl80211_commands cmd,
7814 enum nl80211_attrs attr,
7815 int vendor_event_idx,
7816 int approxlen, gfp_t gfp)
7817 {
7818 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7819 const struct nl80211_vendor_cmd_info *info;
7820
7821 switch (cmd) {
7822 case NL80211_CMD_TESTMODE:
7823 if (WARN_ON(vendor_event_idx != -1))
7824 return NULL;
7825 info = NULL;
7826 break;
7827 case NL80211_CMD_VENDOR:
7828 if (WARN_ON(vendor_event_idx < 0 ||
7829 vendor_event_idx >= wiphy->n_vendor_events))
7830 return NULL;
7831 info = &wiphy->vendor_events[vendor_event_idx];
7832 break;
7833 default:
7834 WARN_ON(1);
7835 return NULL;
7836 }
7837
7838 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7839 cmd, attr, info, gfp);
7840 }
7841 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7842
7843 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7844 {
7845 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7846 void *hdr = ((void **)skb->cb)[1];
7847 struct nlattr *data = ((void **)skb->cb)[2];
7848 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7849
7850 /* clear CB data for netlink core to own from now on */
7851 memset(skb->cb, 0, sizeof(skb->cb));
7852
7853 nla_nest_end(skb, data);
7854 genlmsg_end(skb, hdr);
7855
7856 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7857 mcgrp = NL80211_MCGRP_VENDOR;
7858
7859 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7860 mcgrp, gfp);
7861 }
7862 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7863
7864 #ifdef CONFIG_NL80211_TESTMODE
7865 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7866 {
7867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7868 struct wireless_dev *wdev =
7869 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7870 int err;
7871
7872 if (!rdev->ops->testmode_cmd)
7873 return -EOPNOTSUPP;
7874
7875 if (IS_ERR(wdev)) {
7876 err = PTR_ERR(wdev);
7877 if (err != -EINVAL)
7878 return err;
7879 wdev = NULL;
7880 } else if (wdev->wiphy != &rdev->wiphy) {
7881 return -EINVAL;
7882 }
7883
7884 if (!info->attrs[NL80211_ATTR_TESTDATA])
7885 return -EINVAL;
7886
7887 rdev->cur_cmd_info = info;
7888 err = rdev_testmode_cmd(rdev, wdev,
7889 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7890 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7891 rdev->cur_cmd_info = NULL;
7892
7893 return err;
7894 }
7895
7896 static int nl80211_testmode_dump(struct sk_buff *skb,
7897 struct netlink_callback *cb)
7898 {
7899 struct cfg80211_registered_device *rdev;
7900 int err;
7901 long phy_idx;
7902 void *data = NULL;
7903 int data_len = 0;
7904
7905 rtnl_lock();
7906
7907 if (cb->args[0]) {
7908 /*
7909 * 0 is a valid index, but not valid for args[0],
7910 * so we need to offset by 1.
7911 */
7912 phy_idx = cb->args[0] - 1;
7913 } else {
7914 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7915 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7916 nl80211_policy);
7917 if (err)
7918 goto out_err;
7919
7920 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7921 nl80211_fam.attrbuf);
7922 if (IS_ERR(rdev)) {
7923 err = PTR_ERR(rdev);
7924 goto out_err;
7925 }
7926 phy_idx = rdev->wiphy_idx;
7927 rdev = NULL;
7928
7929 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7930 cb->args[1] =
7931 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7932 }
7933
7934 if (cb->args[1]) {
7935 data = nla_data((void *)cb->args[1]);
7936 data_len = nla_len((void *)cb->args[1]);
7937 }
7938
7939 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7940 if (!rdev) {
7941 err = -ENOENT;
7942 goto out_err;
7943 }
7944
7945 if (!rdev->ops->testmode_dump) {
7946 err = -EOPNOTSUPP;
7947 goto out_err;
7948 }
7949
7950 while (1) {
7951 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7952 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7953 NL80211_CMD_TESTMODE);
7954 struct nlattr *tmdata;
7955
7956 if (!hdr)
7957 break;
7958
7959 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7960 genlmsg_cancel(skb, hdr);
7961 break;
7962 }
7963
7964 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7965 if (!tmdata) {
7966 genlmsg_cancel(skb, hdr);
7967 break;
7968 }
7969 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7970 nla_nest_end(skb, tmdata);
7971
7972 if (err == -ENOBUFS || err == -ENOENT) {
7973 genlmsg_cancel(skb, hdr);
7974 break;
7975 } else if (err) {
7976 genlmsg_cancel(skb, hdr);
7977 goto out_err;
7978 }
7979
7980 genlmsg_end(skb, hdr);
7981 }
7982
7983 err = skb->len;
7984 /* see above */
7985 cb->args[0] = phy_idx + 1;
7986 out_err:
7987 rtnl_unlock();
7988 return err;
7989 }
7990 #endif
7991
7992 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7993 {
7994 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7995 struct net_device *dev = info->user_ptr[1];
7996 struct cfg80211_connect_params connect;
7997 struct wiphy *wiphy;
7998 struct cfg80211_cached_keys *connkeys = NULL;
7999 int err;
8000
8001 memset(&connect, 0, sizeof(connect));
8002
8003 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8004 return -EINVAL;
8005
8006 if (!info->attrs[NL80211_ATTR_SSID] ||
8007 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8008 return -EINVAL;
8009
8010 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8011 connect.auth_type =
8012 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8013 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8014 NL80211_CMD_CONNECT))
8015 return -EINVAL;
8016 } else
8017 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8018
8019 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8020
8021 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8022 NL80211_MAX_NR_CIPHER_SUITES);
8023 if (err)
8024 return err;
8025
8026 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8027 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8028 return -EOPNOTSUPP;
8029
8030 wiphy = &rdev->wiphy;
8031
8032 connect.bg_scan_period = -1;
8033 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8034 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8035 connect.bg_scan_period =
8036 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8037 }
8038
8039 if (info->attrs[NL80211_ATTR_MAC])
8040 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8041 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8042 connect.bssid_hint =
8043 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8044 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8045 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8046
8047 if (info->attrs[NL80211_ATTR_IE]) {
8048 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8049 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8050 }
8051
8052 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8053 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8054 if (connect.mfp != NL80211_MFP_REQUIRED &&
8055 connect.mfp != NL80211_MFP_NO)
8056 return -EINVAL;
8057 } else {
8058 connect.mfp = NL80211_MFP_NO;
8059 }
8060
8061 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8062 connect.prev_bssid =
8063 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8064
8065 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8066 connect.channel = nl80211_get_valid_chan(
8067 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8068 if (!connect.channel)
8069 return -EINVAL;
8070 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8071 connect.channel_hint = nl80211_get_valid_chan(
8072 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8073 if (!connect.channel_hint)
8074 return -EINVAL;
8075 }
8076
8077 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8078 connkeys = nl80211_parse_connkeys(rdev,
8079 info->attrs[NL80211_ATTR_KEYS], NULL);
8080 if (IS_ERR(connkeys))
8081 return PTR_ERR(connkeys);
8082 }
8083
8084 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8085 connect.flags |= ASSOC_REQ_DISABLE_HT;
8086
8087 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8088 memcpy(&connect.ht_capa_mask,
8089 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8090 sizeof(connect.ht_capa_mask));
8091
8092 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8093 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8094 kzfree(connkeys);
8095 return -EINVAL;
8096 }
8097 memcpy(&connect.ht_capa,
8098 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8099 sizeof(connect.ht_capa));
8100 }
8101
8102 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8103 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8104
8105 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8106 memcpy(&connect.vht_capa_mask,
8107 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8108 sizeof(connect.vht_capa_mask));
8109
8110 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8111 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8112 kzfree(connkeys);
8113 return -EINVAL;
8114 }
8115 memcpy(&connect.vht_capa,
8116 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8117 sizeof(connect.vht_capa));
8118 }
8119
8120 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8121 if (!((rdev->wiphy.features &
8122 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8123 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8124 !wiphy_ext_feature_isset(&rdev->wiphy,
8125 NL80211_EXT_FEATURE_RRM)) {
8126 kzfree(connkeys);
8127 return -EINVAL;
8128 }
8129 connect.flags |= ASSOC_REQ_USE_RRM;
8130 }
8131
8132 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8133 if (connect.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ]) {
8134 kzfree(connkeys);
8135 return -EOPNOTSUPP;
8136 }
8137
8138 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8139 /* bss selection makes no sense if bssid is set */
8140 if (connect.bssid) {
8141 kzfree(connkeys);
8142 return -EINVAL;
8143 }
8144
8145 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8146 wiphy, &connect.bss_select);
8147 if (err) {
8148 kzfree(connkeys);
8149 return err;
8150 }
8151 }
8152
8153 wdev_lock(dev->ieee80211_ptr);
8154 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
8155 wdev_unlock(dev->ieee80211_ptr);
8156 if (err)
8157 kzfree(connkeys);
8158 return err;
8159 }
8160
8161 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8162 {
8163 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8164 struct net_device *dev = info->user_ptr[1];
8165 u16 reason;
8166 int ret;
8167
8168 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8169 reason = WLAN_REASON_DEAUTH_LEAVING;
8170 else
8171 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8172
8173 if (reason == 0)
8174 return -EINVAL;
8175
8176 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8177 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8178 return -EOPNOTSUPP;
8179
8180 wdev_lock(dev->ieee80211_ptr);
8181 ret = cfg80211_disconnect(rdev, dev, reason, true);
8182 wdev_unlock(dev->ieee80211_ptr);
8183 return ret;
8184 }
8185
8186 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8187 {
8188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8189 struct net *net;
8190 int err;
8191
8192 if (info->attrs[NL80211_ATTR_PID]) {
8193 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8194
8195 net = get_net_ns_by_pid(pid);
8196 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8197 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8198
8199 net = get_net_ns_by_fd(fd);
8200 } else {
8201 return -EINVAL;
8202 }
8203
8204 if (IS_ERR(net))
8205 return PTR_ERR(net);
8206
8207 err = 0;
8208
8209 /* check if anything to do */
8210 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8211 err = cfg80211_switch_netns(rdev, net);
8212
8213 put_net(net);
8214 return err;
8215 }
8216
8217 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8218 {
8219 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8220 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8221 struct cfg80211_pmksa *pmksa) = NULL;
8222 struct net_device *dev = info->user_ptr[1];
8223 struct cfg80211_pmksa pmksa;
8224
8225 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8226
8227 if (!info->attrs[NL80211_ATTR_MAC])
8228 return -EINVAL;
8229
8230 if (!info->attrs[NL80211_ATTR_PMKID])
8231 return -EINVAL;
8232
8233 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8234 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8235
8236 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8237 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8238 return -EOPNOTSUPP;
8239
8240 switch (info->genlhdr->cmd) {
8241 case NL80211_CMD_SET_PMKSA:
8242 rdev_ops = rdev->ops->set_pmksa;
8243 break;
8244 case NL80211_CMD_DEL_PMKSA:
8245 rdev_ops = rdev->ops->del_pmksa;
8246 break;
8247 default:
8248 WARN_ON(1);
8249 break;
8250 }
8251
8252 if (!rdev_ops)
8253 return -EOPNOTSUPP;
8254
8255 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8256 }
8257
8258 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8259 {
8260 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8261 struct net_device *dev = info->user_ptr[1];
8262
8263 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8265 return -EOPNOTSUPP;
8266
8267 if (!rdev->ops->flush_pmksa)
8268 return -EOPNOTSUPP;
8269
8270 return rdev_flush_pmksa(rdev, dev);
8271 }
8272
8273 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8274 {
8275 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8276 struct net_device *dev = info->user_ptr[1];
8277 u8 action_code, dialog_token;
8278 u32 peer_capability = 0;
8279 u16 status_code;
8280 u8 *peer;
8281 bool initiator;
8282
8283 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8284 !rdev->ops->tdls_mgmt)
8285 return -EOPNOTSUPP;
8286
8287 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8288 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8289 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8290 !info->attrs[NL80211_ATTR_IE] ||
8291 !info->attrs[NL80211_ATTR_MAC])
8292 return -EINVAL;
8293
8294 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8295 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8296 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8297 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8298 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8299 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8300 peer_capability =
8301 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8302
8303 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8304 dialog_token, status_code, peer_capability,
8305 initiator,
8306 nla_data(info->attrs[NL80211_ATTR_IE]),
8307 nla_len(info->attrs[NL80211_ATTR_IE]));
8308 }
8309
8310 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8311 {
8312 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8313 struct net_device *dev = info->user_ptr[1];
8314 enum nl80211_tdls_operation operation;
8315 u8 *peer;
8316
8317 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8318 !rdev->ops->tdls_oper)
8319 return -EOPNOTSUPP;
8320
8321 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8322 !info->attrs[NL80211_ATTR_MAC])
8323 return -EINVAL;
8324
8325 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8326 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8327
8328 return rdev_tdls_oper(rdev, dev, peer, operation);
8329 }
8330
8331 static int nl80211_remain_on_channel(struct sk_buff *skb,
8332 struct genl_info *info)
8333 {
8334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8335 struct wireless_dev *wdev = info->user_ptr[1];
8336 struct cfg80211_chan_def chandef;
8337 struct sk_buff *msg;
8338 void *hdr;
8339 u64 cookie;
8340 u32 duration;
8341 int err;
8342
8343 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8344 !info->attrs[NL80211_ATTR_DURATION])
8345 return -EINVAL;
8346
8347 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8348
8349 if (!rdev->ops->remain_on_channel ||
8350 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8351 return -EOPNOTSUPP;
8352
8353 /*
8354 * We should be on that channel for at least a minimum amount of
8355 * time (10ms) but no longer than the driver supports.
8356 */
8357 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8358 duration > rdev->wiphy.max_remain_on_channel_duration)
8359 return -EINVAL;
8360
8361 err = nl80211_parse_chandef(rdev, info, &chandef);
8362 if (err)
8363 return err;
8364
8365 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8366 if (!msg)
8367 return -ENOMEM;
8368
8369 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8370 NL80211_CMD_REMAIN_ON_CHANNEL);
8371 if (!hdr) {
8372 err = -ENOBUFS;
8373 goto free_msg;
8374 }
8375
8376 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8377 duration, &cookie);
8378
8379 if (err)
8380 goto free_msg;
8381
8382 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8383 goto nla_put_failure;
8384
8385 genlmsg_end(msg, hdr);
8386
8387 return genlmsg_reply(msg, info);
8388
8389 nla_put_failure:
8390 err = -ENOBUFS;
8391 free_msg:
8392 nlmsg_free(msg);
8393 return err;
8394 }
8395
8396 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8397 struct genl_info *info)
8398 {
8399 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8400 struct wireless_dev *wdev = info->user_ptr[1];
8401 u64 cookie;
8402
8403 if (!info->attrs[NL80211_ATTR_COOKIE])
8404 return -EINVAL;
8405
8406 if (!rdev->ops->cancel_remain_on_channel)
8407 return -EOPNOTSUPP;
8408
8409 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8410
8411 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8412 }
8413
8414 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8415 u8 *rates, u8 rates_len)
8416 {
8417 u8 i;
8418 u32 mask = 0;
8419
8420 for (i = 0; i < rates_len; i++) {
8421 int rate = (rates[i] & 0x7f) * 5;
8422 int ridx;
8423 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8424 struct ieee80211_rate *srate =
8425 &sband->bitrates[ridx];
8426 if (rate == srate->bitrate) {
8427 mask |= 1 << ridx;
8428 break;
8429 }
8430 }
8431 if (ridx == sband->n_bitrates)
8432 return 0; /* rate not found */
8433 }
8434
8435 return mask;
8436 }
8437
8438 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8439 u8 *rates, u8 rates_len,
8440 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8441 {
8442 u8 i;
8443
8444 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8445
8446 for (i = 0; i < rates_len; i++) {
8447 int ridx, rbit;
8448
8449 ridx = rates[i] / 8;
8450 rbit = BIT(rates[i] % 8);
8451
8452 /* check validity */
8453 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8454 return false;
8455
8456 /* check availability */
8457 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8458 mcs[ridx] |= rbit;
8459 else
8460 return false;
8461 }
8462
8463 return true;
8464 }
8465
8466 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8467 {
8468 u16 mcs_mask = 0;
8469
8470 switch (vht_mcs_map) {
8471 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8472 break;
8473 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8474 mcs_mask = 0x00FF;
8475 break;
8476 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8477 mcs_mask = 0x01FF;
8478 break;
8479 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8480 mcs_mask = 0x03FF;
8481 break;
8482 default:
8483 break;
8484 }
8485
8486 return mcs_mask;
8487 }
8488
8489 static void vht_build_mcs_mask(u16 vht_mcs_map,
8490 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8491 {
8492 u8 nss;
8493
8494 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8495 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8496 vht_mcs_map >>= 2;
8497 }
8498 }
8499
8500 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8501 struct nl80211_txrate_vht *txrate,
8502 u16 mcs[NL80211_VHT_NSS_MAX])
8503 {
8504 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8505 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8506 u8 i;
8507
8508 if (!sband->vht_cap.vht_supported)
8509 return false;
8510
8511 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8512
8513 /* Build vht_mcs_mask from VHT capabilities */
8514 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8515
8516 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8517 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8518 mcs[i] = txrate->mcs[i];
8519 else
8520 return false;
8521 }
8522
8523 return true;
8524 }
8525
8526 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8527 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8528 .len = NL80211_MAX_SUPP_RATES },
8529 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8530 .len = NL80211_MAX_SUPP_HT_RATES },
8531 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8532 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8533 };
8534
8535 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8536 struct genl_info *info)
8537 {
8538 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540 struct cfg80211_bitrate_mask mask;
8541 int rem, i;
8542 struct net_device *dev = info->user_ptr[1];
8543 struct nlattr *tx_rates;
8544 struct ieee80211_supported_band *sband;
8545 u16 vht_tx_mcs_map;
8546
8547 if (!rdev->ops->set_bitrate_mask)
8548 return -EOPNOTSUPP;
8549
8550 memset(&mask, 0, sizeof(mask));
8551 /* Default to all rates enabled */
8552 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8553 sband = rdev->wiphy.bands[i];
8554
8555 if (!sband)
8556 continue;
8557
8558 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8559 memcpy(mask.control[i].ht_mcs,
8560 sband->ht_cap.mcs.rx_mask,
8561 sizeof(mask.control[i].ht_mcs));
8562
8563 if (!sband->vht_cap.vht_supported)
8564 continue;
8565
8566 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8567 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8568 }
8569
8570 /* if no rates are given set it back to the defaults */
8571 if (!info->attrs[NL80211_ATTR_TX_RATES])
8572 goto out;
8573
8574 /*
8575 * The nested attribute uses enum nl80211_band as the index. This maps
8576 * directly to the enum ieee80211_band values used in cfg80211.
8577 */
8578 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8579 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8580 enum ieee80211_band band = nla_type(tx_rates);
8581 int err;
8582
8583 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8584 return -EINVAL;
8585 sband = rdev->wiphy.bands[band];
8586 if (sband == NULL)
8587 return -EINVAL;
8588 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8589 nla_len(tx_rates), nl80211_txattr_policy);
8590 if (err)
8591 return err;
8592 if (tb[NL80211_TXRATE_LEGACY]) {
8593 mask.control[band].legacy = rateset_to_mask(
8594 sband,
8595 nla_data(tb[NL80211_TXRATE_LEGACY]),
8596 nla_len(tb[NL80211_TXRATE_LEGACY]));
8597 if ((mask.control[band].legacy == 0) &&
8598 nla_len(tb[NL80211_TXRATE_LEGACY]))
8599 return -EINVAL;
8600 }
8601 if (tb[NL80211_TXRATE_HT]) {
8602 if (!ht_rateset_to_mask(
8603 sband,
8604 nla_data(tb[NL80211_TXRATE_HT]),
8605 nla_len(tb[NL80211_TXRATE_HT]),
8606 mask.control[band].ht_mcs))
8607 return -EINVAL;
8608 }
8609 if (tb[NL80211_TXRATE_VHT]) {
8610 if (!vht_set_mcs_mask(
8611 sband,
8612 nla_data(tb[NL80211_TXRATE_VHT]),
8613 mask.control[band].vht_mcs))
8614 return -EINVAL;
8615 }
8616 if (tb[NL80211_TXRATE_GI]) {
8617 mask.control[band].gi =
8618 nla_get_u8(tb[NL80211_TXRATE_GI]);
8619 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8620 return -EINVAL;
8621 }
8622
8623 if (mask.control[band].legacy == 0) {
8624 /* don't allow empty legacy rates if HT or VHT
8625 * are not even supported.
8626 */
8627 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8628 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8629 return -EINVAL;
8630
8631 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8632 if (mask.control[band].ht_mcs[i])
8633 goto out;
8634
8635 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8636 if (mask.control[band].vht_mcs[i])
8637 goto out;
8638
8639 /* legacy and mcs rates may not be both empty */
8640 return -EINVAL;
8641 }
8642 }
8643
8644 out:
8645 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8646 }
8647
8648 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8649 {
8650 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8651 struct wireless_dev *wdev = info->user_ptr[1];
8652 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8653
8654 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8655 return -EINVAL;
8656
8657 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8658 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8659
8660 switch (wdev->iftype) {
8661 case NL80211_IFTYPE_STATION:
8662 case NL80211_IFTYPE_ADHOC:
8663 case NL80211_IFTYPE_P2P_CLIENT:
8664 case NL80211_IFTYPE_AP:
8665 case NL80211_IFTYPE_AP_VLAN:
8666 case NL80211_IFTYPE_MESH_POINT:
8667 case NL80211_IFTYPE_P2P_GO:
8668 case NL80211_IFTYPE_P2P_DEVICE:
8669 break;
8670 default:
8671 return -EOPNOTSUPP;
8672 }
8673
8674 /* not much point in registering if we can't reply */
8675 if (!rdev->ops->mgmt_tx)
8676 return -EOPNOTSUPP;
8677
8678 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8679 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8680 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8681 }
8682
8683 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8684 {
8685 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8686 struct wireless_dev *wdev = info->user_ptr[1];
8687 struct cfg80211_chan_def chandef;
8688 int err;
8689 void *hdr = NULL;
8690 u64 cookie;
8691 struct sk_buff *msg = NULL;
8692 struct cfg80211_mgmt_tx_params params = {
8693 .dont_wait_for_ack =
8694 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8695 };
8696
8697 if (!info->attrs[NL80211_ATTR_FRAME])
8698 return -EINVAL;
8699
8700 if (!rdev->ops->mgmt_tx)
8701 return -EOPNOTSUPP;
8702
8703 switch (wdev->iftype) {
8704 case NL80211_IFTYPE_P2P_DEVICE:
8705 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8706 return -EINVAL;
8707 case NL80211_IFTYPE_STATION:
8708 case NL80211_IFTYPE_ADHOC:
8709 case NL80211_IFTYPE_P2P_CLIENT:
8710 case NL80211_IFTYPE_AP:
8711 case NL80211_IFTYPE_AP_VLAN:
8712 case NL80211_IFTYPE_MESH_POINT:
8713 case NL80211_IFTYPE_P2P_GO:
8714 break;
8715 default:
8716 return -EOPNOTSUPP;
8717 }
8718
8719 if (info->attrs[NL80211_ATTR_DURATION]) {
8720 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8721 return -EINVAL;
8722 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8723
8724 /*
8725 * We should wait on the channel for at least a minimum amount
8726 * of time (10ms) but no longer than the driver supports.
8727 */
8728 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8729 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8730 return -EINVAL;
8731
8732 }
8733
8734 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8735
8736 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8737 return -EINVAL;
8738
8739 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8740
8741 /* get the channel if any has been specified, otherwise pass NULL to
8742 * the driver. The latter will use the current one
8743 */
8744 chandef.chan = NULL;
8745 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8746 err = nl80211_parse_chandef(rdev, info, &chandef);
8747 if (err)
8748 return err;
8749 }
8750
8751 if (!chandef.chan && params.offchan)
8752 return -EINVAL;
8753
8754 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8755 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8756
8757 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8758 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8759 int i;
8760
8761 if (len % sizeof(u16))
8762 return -EINVAL;
8763
8764 params.n_csa_offsets = len / sizeof(u16);
8765 params.csa_offsets =
8766 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8767
8768 /* check that all the offsets fit the frame */
8769 for (i = 0; i < params.n_csa_offsets; i++) {
8770 if (params.csa_offsets[i] >= params.len)
8771 return -EINVAL;
8772 }
8773 }
8774
8775 if (!params.dont_wait_for_ack) {
8776 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8777 if (!msg)
8778 return -ENOMEM;
8779
8780 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8781 NL80211_CMD_FRAME);
8782 if (!hdr) {
8783 err = -ENOBUFS;
8784 goto free_msg;
8785 }
8786 }
8787
8788 params.chan = chandef.chan;
8789 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8790 if (err)
8791 goto free_msg;
8792
8793 if (msg) {
8794 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8795 goto nla_put_failure;
8796
8797 genlmsg_end(msg, hdr);
8798 return genlmsg_reply(msg, info);
8799 }
8800
8801 return 0;
8802
8803 nla_put_failure:
8804 err = -ENOBUFS;
8805 free_msg:
8806 nlmsg_free(msg);
8807 return err;
8808 }
8809
8810 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8811 {
8812 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8813 struct wireless_dev *wdev = info->user_ptr[1];
8814 u64 cookie;
8815
8816 if (!info->attrs[NL80211_ATTR_COOKIE])
8817 return -EINVAL;
8818
8819 if (!rdev->ops->mgmt_tx_cancel_wait)
8820 return -EOPNOTSUPP;
8821
8822 switch (wdev->iftype) {
8823 case NL80211_IFTYPE_STATION:
8824 case NL80211_IFTYPE_ADHOC:
8825 case NL80211_IFTYPE_P2P_CLIENT:
8826 case NL80211_IFTYPE_AP:
8827 case NL80211_IFTYPE_AP_VLAN:
8828 case NL80211_IFTYPE_P2P_GO:
8829 case NL80211_IFTYPE_P2P_DEVICE:
8830 break;
8831 default:
8832 return -EOPNOTSUPP;
8833 }
8834
8835 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8836
8837 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8838 }
8839
8840 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8841 {
8842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8843 struct wireless_dev *wdev;
8844 struct net_device *dev = info->user_ptr[1];
8845 u8 ps_state;
8846 bool state;
8847 int err;
8848
8849 if (!info->attrs[NL80211_ATTR_PS_STATE])
8850 return -EINVAL;
8851
8852 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8853
8854 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8855 return -EINVAL;
8856
8857 wdev = dev->ieee80211_ptr;
8858
8859 if (!rdev->ops->set_power_mgmt)
8860 return -EOPNOTSUPP;
8861
8862 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8863
8864 if (state == wdev->ps)
8865 return 0;
8866
8867 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8868 if (!err)
8869 wdev->ps = state;
8870 return err;
8871 }
8872
8873 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8874 {
8875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8876 enum nl80211_ps_state ps_state;
8877 struct wireless_dev *wdev;
8878 struct net_device *dev = info->user_ptr[1];
8879 struct sk_buff *msg;
8880 void *hdr;
8881 int err;
8882
8883 wdev = dev->ieee80211_ptr;
8884
8885 if (!rdev->ops->set_power_mgmt)
8886 return -EOPNOTSUPP;
8887
8888 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8889 if (!msg)
8890 return -ENOMEM;
8891
8892 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8893 NL80211_CMD_GET_POWER_SAVE);
8894 if (!hdr) {
8895 err = -ENOBUFS;
8896 goto free_msg;
8897 }
8898
8899 if (wdev->ps)
8900 ps_state = NL80211_PS_ENABLED;
8901 else
8902 ps_state = NL80211_PS_DISABLED;
8903
8904 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8905 goto nla_put_failure;
8906
8907 genlmsg_end(msg, hdr);
8908 return genlmsg_reply(msg, info);
8909
8910 nla_put_failure:
8911 err = -ENOBUFS;
8912 free_msg:
8913 nlmsg_free(msg);
8914 return err;
8915 }
8916
8917 static const struct nla_policy
8918 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8919 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8920 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8921 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8922 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8923 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8924 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8925 };
8926
8927 static int nl80211_set_cqm_txe(struct genl_info *info,
8928 u32 rate, u32 pkts, u32 intvl)
8929 {
8930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8931 struct net_device *dev = info->user_ptr[1];
8932 struct wireless_dev *wdev = dev->ieee80211_ptr;
8933
8934 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8935 return -EINVAL;
8936
8937 if (!rdev->ops->set_cqm_txe_config)
8938 return -EOPNOTSUPP;
8939
8940 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8941 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8942 return -EOPNOTSUPP;
8943
8944 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8945 }
8946
8947 static int nl80211_set_cqm_rssi(struct genl_info *info,
8948 s32 threshold, u32 hysteresis)
8949 {
8950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8951 struct net_device *dev = info->user_ptr[1];
8952 struct wireless_dev *wdev = dev->ieee80211_ptr;
8953
8954 if (threshold > 0)
8955 return -EINVAL;
8956
8957 /* disabling - hysteresis should also be zero then */
8958 if (threshold == 0)
8959 hysteresis = 0;
8960
8961 if (!rdev->ops->set_cqm_rssi_config)
8962 return -EOPNOTSUPP;
8963
8964 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8965 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8966 return -EOPNOTSUPP;
8967
8968 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8969 }
8970
8971 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8972 {
8973 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8974 struct nlattr *cqm;
8975 int err;
8976
8977 cqm = info->attrs[NL80211_ATTR_CQM];
8978 if (!cqm)
8979 return -EINVAL;
8980
8981 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8982 nl80211_attr_cqm_policy);
8983 if (err)
8984 return err;
8985
8986 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8987 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8988 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8989 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8990
8991 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8992 }
8993
8994 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8995 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8996 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8997 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8998 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8999 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9000
9001 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9002 }
9003
9004 return -EINVAL;
9005 }
9006
9007 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9008 {
9009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9010 struct net_device *dev = info->user_ptr[1];
9011 struct ocb_setup setup = {};
9012 int err;
9013
9014 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9015 if (err)
9016 return err;
9017
9018 return cfg80211_join_ocb(rdev, dev, &setup);
9019 }
9020
9021 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9022 {
9023 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9024 struct net_device *dev = info->user_ptr[1];
9025
9026 return cfg80211_leave_ocb(rdev, dev);
9027 }
9028
9029 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9030 {
9031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9032 struct net_device *dev = info->user_ptr[1];
9033 struct mesh_config cfg;
9034 struct mesh_setup setup;
9035 int err;
9036
9037 /* start with default */
9038 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9039 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9040
9041 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9042 /* and parse parameters if given */
9043 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9044 if (err)
9045 return err;
9046 }
9047
9048 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9049 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9050 return -EINVAL;
9051
9052 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9053 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9054
9055 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9056 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9057 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9058 return -EINVAL;
9059
9060 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9061 setup.beacon_interval =
9062 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9063 if (setup.beacon_interval < 10 ||
9064 setup.beacon_interval > 10000)
9065 return -EINVAL;
9066 }
9067
9068 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9069 setup.dtim_period =
9070 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9071 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9072 return -EINVAL;
9073 }
9074
9075 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9076 /* parse additional setup parameters if given */
9077 err = nl80211_parse_mesh_setup(info, &setup);
9078 if (err)
9079 return err;
9080 }
9081
9082 if (setup.user_mpm)
9083 cfg.auto_open_plinks = false;
9084
9085 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9086 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9087 if (err)
9088 return err;
9089 } else {
9090 /* cfg80211_join_mesh() will sort it out */
9091 setup.chandef.chan = NULL;
9092 }
9093
9094 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9095 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9096 int n_rates =
9097 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9098 struct ieee80211_supported_band *sband;
9099
9100 if (!setup.chandef.chan)
9101 return -EINVAL;
9102
9103 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9104
9105 err = ieee80211_get_ratemask(sband, rates, n_rates,
9106 &setup.basic_rates);
9107 if (err)
9108 return err;
9109 }
9110
9111 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9112 }
9113
9114 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9115 {
9116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9117 struct net_device *dev = info->user_ptr[1];
9118
9119 return cfg80211_leave_mesh(rdev, dev);
9120 }
9121
9122 #ifdef CONFIG_PM
9123 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9124 struct cfg80211_registered_device *rdev)
9125 {
9126 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9127 struct nlattr *nl_pats, *nl_pat;
9128 int i, pat_len;
9129
9130 if (!wowlan->n_patterns)
9131 return 0;
9132
9133 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9134 if (!nl_pats)
9135 return -ENOBUFS;
9136
9137 for (i = 0; i < wowlan->n_patterns; i++) {
9138 nl_pat = nla_nest_start(msg, i + 1);
9139 if (!nl_pat)
9140 return -ENOBUFS;
9141 pat_len = wowlan->patterns[i].pattern_len;
9142 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9143 wowlan->patterns[i].mask) ||
9144 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9145 wowlan->patterns[i].pattern) ||
9146 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9147 wowlan->patterns[i].pkt_offset))
9148 return -ENOBUFS;
9149 nla_nest_end(msg, nl_pat);
9150 }
9151 nla_nest_end(msg, nl_pats);
9152
9153 return 0;
9154 }
9155
9156 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9157 struct cfg80211_wowlan_tcp *tcp)
9158 {
9159 struct nlattr *nl_tcp;
9160
9161 if (!tcp)
9162 return 0;
9163
9164 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9165 if (!nl_tcp)
9166 return -ENOBUFS;
9167
9168 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9169 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9170 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9171 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9172 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9173 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9174 tcp->payload_len, tcp->payload) ||
9175 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9176 tcp->data_interval) ||
9177 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9178 tcp->wake_len, tcp->wake_data) ||
9179 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9180 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9181 return -ENOBUFS;
9182
9183 if (tcp->payload_seq.len &&
9184 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9185 sizeof(tcp->payload_seq), &tcp->payload_seq))
9186 return -ENOBUFS;
9187
9188 if (tcp->payload_tok.len &&
9189 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9190 sizeof(tcp->payload_tok) + tcp->tokens_size,
9191 &tcp->payload_tok))
9192 return -ENOBUFS;
9193
9194 nla_nest_end(msg, nl_tcp);
9195
9196 return 0;
9197 }
9198
9199 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9200 struct cfg80211_sched_scan_request *req)
9201 {
9202 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9203 int i;
9204
9205 if (!req)
9206 return 0;
9207
9208 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9209 if (!nd)
9210 return -ENOBUFS;
9211
9212 if (req->n_scan_plans == 1 &&
9213 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9214 req->scan_plans[0].interval * 1000))
9215 return -ENOBUFS;
9216
9217 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9218 return -ENOBUFS;
9219
9220 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9221 if (!freqs)
9222 return -ENOBUFS;
9223
9224 for (i = 0; i < req->n_channels; i++)
9225 nla_put_u32(msg, i, req->channels[i]->center_freq);
9226
9227 nla_nest_end(msg, freqs);
9228
9229 if (req->n_match_sets) {
9230 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9231 for (i = 0; i < req->n_match_sets; i++) {
9232 match = nla_nest_start(msg, i);
9233 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9234 req->match_sets[i].ssid.ssid_len,
9235 req->match_sets[i].ssid.ssid);
9236 nla_nest_end(msg, match);
9237 }
9238 nla_nest_end(msg, matches);
9239 }
9240
9241 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9242 if (!scan_plans)
9243 return -ENOBUFS;
9244
9245 for (i = 0; i < req->n_scan_plans; i++) {
9246 scan_plan = nla_nest_start(msg, i + 1);
9247 if (!scan_plan ||
9248 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9249 req->scan_plans[i].interval) ||
9250 (req->scan_plans[i].iterations &&
9251 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9252 req->scan_plans[i].iterations)))
9253 return -ENOBUFS;
9254 nla_nest_end(msg, scan_plan);
9255 }
9256 nla_nest_end(msg, scan_plans);
9257
9258 nla_nest_end(msg, nd);
9259
9260 return 0;
9261 }
9262
9263 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9264 {
9265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9266 struct sk_buff *msg;
9267 void *hdr;
9268 u32 size = NLMSG_DEFAULT_SIZE;
9269
9270 if (!rdev->wiphy.wowlan)
9271 return -EOPNOTSUPP;
9272
9273 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9274 /* adjust size to have room for all the data */
9275 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9276 rdev->wiphy.wowlan_config->tcp->payload_len +
9277 rdev->wiphy.wowlan_config->tcp->wake_len +
9278 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9279 }
9280
9281 msg = nlmsg_new(size, GFP_KERNEL);
9282 if (!msg)
9283 return -ENOMEM;
9284
9285 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9286 NL80211_CMD_GET_WOWLAN);
9287 if (!hdr)
9288 goto nla_put_failure;
9289
9290 if (rdev->wiphy.wowlan_config) {
9291 struct nlattr *nl_wowlan;
9292
9293 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9294 if (!nl_wowlan)
9295 goto nla_put_failure;
9296
9297 if ((rdev->wiphy.wowlan_config->any &&
9298 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9299 (rdev->wiphy.wowlan_config->disconnect &&
9300 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9301 (rdev->wiphy.wowlan_config->magic_pkt &&
9302 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9303 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9304 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9305 (rdev->wiphy.wowlan_config->eap_identity_req &&
9306 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9307 (rdev->wiphy.wowlan_config->four_way_handshake &&
9308 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9309 (rdev->wiphy.wowlan_config->rfkill_release &&
9310 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9311 goto nla_put_failure;
9312
9313 if (nl80211_send_wowlan_patterns(msg, rdev))
9314 goto nla_put_failure;
9315
9316 if (nl80211_send_wowlan_tcp(msg,
9317 rdev->wiphy.wowlan_config->tcp))
9318 goto nla_put_failure;
9319
9320 if (nl80211_send_wowlan_nd(
9321 msg,
9322 rdev->wiphy.wowlan_config->nd_config))
9323 goto nla_put_failure;
9324
9325 nla_nest_end(msg, nl_wowlan);
9326 }
9327
9328 genlmsg_end(msg, hdr);
9329 return genlmsg_reply(msg, info);
9330
9331 nla_put_failure:
9332 nlmsg_free(msg);
9333 return -ENOBUFS;
9334 }
9335
9336 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9337 struct nlattr *attr,
9338 struct cfg80211_wowlan *trig)
9339 {
9340 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9341 struct cfg80211_wowlan_tcp *cfg;
9342 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9343 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9344 u32 size;
9345 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9346 int err, port;
9347
9348 if (!rdev->wiphy.wowlan->tcp)
9349 return -EINVAL;
9350
9351 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9352 nla_data(attr), nla_len(attr),
9353 nl80211_wowlan_tcp_policy);
9354 if (err)
9355 return err;
9356
9357 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9358 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9359 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9360 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9361 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9362 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9363 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9364 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9365 return -EINVAL;
9366
9367 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9368 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9369 return -EINVAL;
9370
9371 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9372 rdev->wiphy.wowlan->tcp->data_interval_max ||
9373 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9374 return -EINVAL;
9375
9376 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9377 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9378 return -EINVAL;
9379
9380 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9381 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9382 return -EINVAL;
9383
9384 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9385 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9386
9387 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9388 tokens_size = tokln - sizeof(*tok);
9389
9390 if (!tok->len || tokens_size % tok->len)
9391 return -EINVAL;
9392 if (!rdev->wiphy.wowlan->tcp->tok)
9393 return -EINVAL;
9394 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9395 return -EINVAL;
9396 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9397 return -EINVAL;
9398 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9399 return -EINVAL;
9400 if (tok->offset + tok->len > data_size)
9401 return -EINVAL;
9402 }
9403
9404 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9405 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9406 if (!rdev->wiphy.wowlan->tcp->seq)
9407 return -EINVAL;
9408 if (seq->len == 0 || seq->len > 4)
9409 return -EINVAL;
9410 if (seq->len + seq->offset > data_size)
9411 return -EINVAL;
9412 }
9413
9414 size = sizeof(*cfg);
9415 size += data_size;
9416 size += wake_size + wake_mask_size;
9417 size += tokens_size;
9418
9419 cfg = kzalloc(size, GFP_KERNEL);
9420 if (!cfg)
9421 return -ENOMEM;
9422 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9423 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9424 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9425 ETH_ALEN);
9426 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9427 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9428 else
9429 port = 0;
9430 #ifdef CONFIG_INET
9431 /* allocate a socket and port for it and use it */
9432 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9433 IPPROTO_TCP, &cfg->sock, 1);
9434 if (err) {
9435 kfree(cfg);
9436 return err;
9437 }
9438 if (inet_csk_get_port(cfg->sock->sk, port)) {
9439 sock_release(cfg->sock);
9440 kfree(cfg);
9441 return -EADDRINUSE;
9442 }
9443 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9444 #else
9445 if (!port) {
9446 kfree(cfg);
9447 return -EINVAL;
9448 }
9449 cfg->src_port = port;
9450 #endif
9451
9452 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9453 cfg->payload_len = data_size;
9454 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9455 memcpy((void *)cfg->payload,
9456 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9457 data_size);
9458 if (seq)
9459 cfg->payload_seq = *seq;
9460 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9461 cfg->wake_len = wake_size;
9462 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9463 memcpy((void *)cfg->wake_data,
9464 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9465 wake_size);
9466 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9467 data_size + wake_size;
9468 memcpy((void *)cfg->wake_mask,
9469 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9470 wake_mask_size);
9471 if (tok) {
9472 cfg->tokens_size = tokens_size;
9473 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9474 }
9475
9476 trig->tcp = cfg;
9477
9478 return 0;
9479 }
9480
9481 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9482 const struct wiphy_wowlan_support *wowlan,
9483 struct nlattr *attr,
9484 struct cfg80211_wowlan *trig)
9485 {
9486 struct nlattr **tb;
9487 int err;
9488
9489 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9490 if (!tb)
9491 return -ENOMEM;
9492
9493 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9494 err = -EOPNOTSUPP;
9495 goto out;
9496 }
9497
9498 err = nla_parse(tb, NL80211_ATTR_MAX,
9499 nla_data(attr), nla_len(attr),
9500 nl80211_policy);
9501 if (err)
9502 goto out;
9503
9504 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9505 err = PTR_ERR_OR_ZERO(trig->nd_config);
9506 if (err)
9507 trig->nd_config = NULL;
9508
9509 out:
9510 kfree(tb);
9511 return err;
9512 }
9513
9514 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9515 {
9516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9517 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9518 struct cfg80211_wowlan new_triggers = {};
9519 struct cfg80211_wowlan *ntrig;
9520 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9521 int err, i;
9522 bool prev_enabled = rdev->wiphy.wowlan_config;
9523 bool regular = false;
9524
9525 if (!wowlan)
9526 return -EOPNOTSUPP;
9527
9528 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9529 cfg80211_rdev_free_wowlan(rdev);
9530 rdev->wiphy.wowlan_config = NULL;
9531 goto set_wakeup;
9532 }
9533
9534 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9535 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9536 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9537 nl80211_wowlan_policy);
9538 if (err)
9539 return err;
9540
9541 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9542 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9543 return -EINVAL;
9544 new_triggers.any = true;
9545 }
9546
9547 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9548 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9549 return -EINVAL;
9550 new_triggers.disconnect = true;
9551 regular = true;
9552 }
9553
9554 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9555 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9556 return -EINVAL;
9557 new_triggers.magic_pkt = true;
9558 regular = true;
9559 }
9560
9561 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9562 return -EINVAL;
9563
9564 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9565 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9566 return -EINVAL;
9567 new_triggers.gtk_rekey_failure = true;
9568 regular = true;
9569 }
9570
9571 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9572 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9573 return -EINVAL;
9574 new_triggers.eap_identity_req = true;
9575 regular = true;
9576 }
9577
9578 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9579 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9580 return -EINVAL;
9581 new_triggers.four_way_handshake = true;
9582 regular = true;
9583 }
9584
9585 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9586 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9587 return -EINVAL;
9588 new_triggers.rfkill_release = true;
9589 regular = true;
9590 }
9591
9592 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9593 struct nlattr *pat;
9594 int n_patterns = 0;
9595 int rem, pat_len, mask_len, pkt_offset;
9596 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9597
9598 regular = true;
9599
9600 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9601 rem)
9602 n_patterns++;
9603 if (n_patterns > wowlan->n_patterns)
9604 return -EINVAL;
9605
9606 new_triggers.patterns = kcalloc(n_patterns,
9607 sizeof(new_triggers.patterns[0]),
9608 GFP_KERNEL);
9609 if (!new_triggers.patterns)
9610 return -ENOMEM;
9611
9612 new_triggers.n_patterns = n_patterns;
9613 i = 0;
9614
9615 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9616 rem) {
9617 u8 *mask_pat;
9618
9619 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9620 nla_len(pat), NULL);
9621 err = -EINVAL;
9622 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9623 !pat_tb[NL80211_PKTPAT_PATTERN])
9624 goto error;
9625 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9626 mask_len = DIV_ROUND_UP(pat_len, 8);
9627 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9628 goto error;
9629 if (pat_len > wowlan->pattern_max_len ||
9630 pat_len < wowlan->pattern_min_len)
9631 goto error;
9632
9633 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9634 pkt_offset = 0;
9635 else
9636 pkt_offset = nla_get_u32(
9637 pat_tb[NL80211_PKTPAT_OFFSET]);
9638 if (pkt_offset > wowlan->max_pkt_offset)
9639 goto error;
9640 new_triggers.patterns[i].pkt_offset = pkt_offset;
9641
9642 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9643 if (!mask_pat) {
9644 err = -ENOMEM;
9645 goto error;
9646 }
9647 new_triggers.patterns[i].mask = mask_pat;
9648 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9649 mask_len);
9650 mask_pat += mask_len;
9651 new_triggers.patterns[i].pattern = mask_pat;
9652 new_triggers.patterns[i].pattern_len = pat_len;
9653 memcpy(mask_pat,
9654 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9655 pat_len);
9656 i++;
9657 }
9658 }
9659
9660 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9661 regular = true;
9662 err = nl80211_parse_wowlan_tcp(
9663 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9664 &new_triggers);
9665 if (err)
9666 goto error;
9667 }
9668
9669 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9670 regular = true;
9671 err = nl80211_parse_wowlan_nd(
9672 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9673 &new_triggers);
9674 if (err)
9675 goto error;
9676 }
9677
9678 /* The 'any' trigger means the device continues operating more or less
9679 * as in its normal operation mode and wakes up the host on most of the
9680 * normal interrupts (like packet RX, ...)
9681 * It therefore makes little sense to combine with the more constrained
9682 * wakeup trigger modes.
9683 */
9684 if (new_triggers.any && regular) {
9685 err = -EINVAL;
9686 goto error;
9687 }
9688
9689 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9690 if (!ntrig) {
9691 err = -ENOMEM;
9692 goto error;
9693 }
9694 cfg80211_rdev_free_wowlan(rdev);
9695 rdev->wiphy.wowlan_config = ntrig;
9696
9697 set_wakeup:
9698 if (rdev->ops->set_wakeup &&
9699 prev_enabled != !!rdev->wiphy.wowlan_config)
9700 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9701
9702 return 0;
9703 error:
9704 for (i = 0; i < new_triggers.n_patterns; i++)
9705 kfree(new_triggers.patterns[i].mask);
9706 kfree(new_triggers.patterns);
9707 if (new_triggers.tcp && new_triggers.tcp->sock)
9708 sock_release(new_triggers.tcp->sock);
9709 kfree(new_triggers.tcp);
9710 kfree(new_triggers.nd_config);
9711 return err;
9712 }
9713 #endif
9714
9715 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9716 struct cfg80211_registered_device *rdev)
9717 {
9718 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9719 int i, j, pat_len;
9720 struct cfg80211_coalesce_rules *rule;
9721
9722 if (!rdev->coalesce->n_rules)
9723 return 0;
9724
9725 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9726 if (!nl_rules)
9727 return -ENOBUFS;
9728
9729 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9730 nl_rule = nla_nest_start(msg, i + 1);
9731 if (!nl_rule)
9732 return -ENOBUFS;
9733
9734 rule = &rdev->coalesce->rules[i];
9735 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9736 rule->delay))
9737 return -ENOBUFS;
9738
9739 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9740 rule->condition))
9741 return -ENOBUFS;
9742
9743 nl_pats = nla_nest_start(msg,
9744 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9745 if (!nl_pats)
9746 return -ENOBUFS;
9747
9748 for (j = 0; j < rule->n_patterns; j++) {
9749 nl_pat = nla_nest_start(msg, j + 1);
9750 if (!nl_pat)
9751 return -ENOBUFS;
9752 pat_len = rule->patterns[j].pattern_len;
9753 if (nla_put(msg, NL80211_PKTPAT_MASK,
9754 DIV_ROUND_UP(pat_len, 8),
9755 rule->patterns[j].mask) ||
9756 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9757 rule->patterns[j].pattern) ||
9758 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9759 rule->patterns[j].pkt_offset))
9760 return -ENOBUFS;
9761 nla_nest_end(msg, nl_pat);
9762 }
9763 nla_nest_end(msg, nl_pats);
9764 nla_nest_end(msg, nl_rule);
9765 }
9766 nla_nest_end(msg, nl_rules);
9767
9768 return 0;
9769 }
9770
9771 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9772 {
9773 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9774 struct sk_buff *msg;
9775 void *hdr;
9776
9777 if (!rdev->wiphy.coalesce)
9778 return -EOPNOTSUPP;
9779
9780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9781 if (!msg)
9782 return -ENOMEM;
9783
9784 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9785 NL80211_CMD_GET_COALESCE);
9786 if (!hdr)
9787 goto nla_put_failure;
9788
9789 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9790 goto nla_put_failure;
9791
9792 genlmsg_end(msg, hdr);
9793 return genlmsg_reply(msg, info);
9794
9795 nla_put_failure:
9796 nlmsg_free(msg);
9797 return -ENOBUFS;
9798 }
9799
9800 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9801 {
9802 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9803 int i, j;
9804 struct cfg80211_coalesce_rules *rule;
9805
9806 if (!coalesce)
9807 return;
9808
9809 for (i = 0; i < coalesce->n_rules; i++) {
9810 rule = &coalesce->rules[i];
9811 for (j = 0; j < rule->n_patterns; j++)
9812 kfree(rule->patterns[j].mask);
9813 kfree(rule->patterns);
9814 }
9815 kfree(coalesce->rules);
9816 kfree(coalesce);
9817 rdev->coalesce = NULL;
9818 }
9819
9820 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9821 struct nlattr *rule,
9822 struct cfg80211_coalesce_rules *new_rule)
9823 {
9824 int err, i;
9825 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9826 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9827 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9828 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9829
9830 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9831 nla_len(rule), nl80211_coalesce_policy);
9832 if (err)
9833 return err;
9834
9835 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9836 new_rule->delay =
9837 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9838 if (new_rule->delay > coalesce->max_delay)
9839 return -EINVAL;
9840
9841 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9842 new_rule->condition =
9843 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9844 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9845 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9846 return -EINVAL;
9847
9848 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9849 return -EINVAL;
9850
9851 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9852 rem)
9853 n_patterns++;
9854 if (n_patterns > coalesce->n_patterns)
9855 return -EINVAL;
9856
9857 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9858 GFP_KERNEL);
9859 if (!new_rule->patterns)
9860 return -ENOMEM;
9861
9862 new_rule->n_patterns = n_patterns;
9863 i = 0;
9864
9865 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9866 rem) {
9867 u8 *mask_pat;
9868
9869 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9870 nla_len(pat), NULL);
9871 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9872 !pat_tb[NL80211_PKTPAT_PATTERN])
9873 return -EINVAL;
9874 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9875 mask_len = DIV_ROUND_UP(pat_len, 8);
9876 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9877 return -EINVAL;
9878 if (pat_len > coalesce->pattern_max_len ||
9879 pat_len < coalesce->pattern_min_len)
9880 return -EINVAL;
9881
9882 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9883 pkt_offset = 0;
9884 else
9885 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9886 if (pkt_offset > coalesce->max_pkt_offset)
9887 return -EINVAL;
9888 new_rule->patterns[i].pkt_offset = pkt_offset;
9889
9890 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9891 if (!mask_pat)
9892 return -ENOMEM;
9893
9894 new_rule->patterns[i].mask = mask_pat;
9895 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9896 mask_len);
9897
9898 mask_pat += mask_len;
9899 new_rule->patterns[i].pattern = mask_pat;
9900 new_rule->patterns[i].pattern_len = pat_len;
9901 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9902 pat_len);
9903 i++;
9904 }
9905
9906 return 0;
9907 }
9908
9909 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9910 {
9911 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9912 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9913 struct cfg80211_coalesce new_coalesce = {};
9914 struct cfg80211_coalesce *n_coalesce;
9915 int err, rem_rule, n_rules = 0, i, j;
9916 struct nlattr *rule;
9917 struct cfg80211_coalesce_rules *tmp_rule;
9918
9919 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9920 return -EOPNOTSUPP;
9921
9922 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9923 cfg80211_rdev_free_coalesce(rdev);
9924 rdev_set_coalesce(rdev, NULL);
9925 return 0;
9926 }
9927
9928 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9929 rem_rule)
9930 n_rules++;
9931 if (n_rules > coalesce->n_rules)
9932 return -EINVAL;
9933
9934 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9935 GFP_KERNEL);
9936 if (!new_coalesce.rules)
9937 return -ENOMEM;
9938
9939 new_coalesce.n_rules = n_rules;
9940 i = 0;
9941
9942 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9943 rem_rule) {
9944 err = nl80211_parse_coalesce_rule(rdev, rule,
9945 &new_coalesce.rules[i]);
9946 if (err)
9947 goto error;
9948
9949 i++;
9950 }
9951
9952 err = rdev_set_coalesce(rdev, &new_coalesce);
9953 if (err)
9954 goto error;
9955
9956 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9957 if (!n_coalesce) {
9958 err = -ENOMEM;
9959 goto error;
9960 }
9961 cfg80211_rdev_free_coalesce(rdev);
9962 rdev->coalesce = n_coalesce;
9963
9964 return 0;
9965 error:
9966 for (i = 0; i < new_coalesce.n_rules; i++) {
9967 tmp_rule = &new_coalesce.rules[i];
9968 for (j = 0; j < tmp_rule->n_patterns; j++)
9969 kfree(tmp_rule->patterns[j].mask);
9970 kfree(tmp_rule->patterns);
9971 }
9972 kfree(new_coalesce.rules);
9973
9974 return err;
9975 }
9976
9977 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9978 {
9979 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9980 struct net_device *dev = info->user_ptr[1];
9981 struct wireless_dev *wdev = dev->ieee80211_ptr;
9982 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9983 struct cfg80211_gtk_rekey_data rekey_data;
9984 int err;
9985
9986 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9987 return -EINVAL;
9988
9989 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9990 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9991 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9992 nl80211_rekey_policy);
9993 if (err)
9994 return err;
9995
9996 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9997 return -ERANGE;
9998 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9999 return -ERANGE;
10000 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10001 return -ERANGE;
10002
10003 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10004 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10005 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10006
10007 wdev_lock(wdev);
10008 if (!wdev->current_bss) {
10009 err = -ENOTCONN;
10010 goto out;
10011 }
10012
10013 if (!rdev->ops->set_rekey_data) {
10014 err = -EOPNOTSUPP;
10015 goto out;
10016 }
10017
10018 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10019 out:
10020 wdev_unlock(wdev);
10021 return err;
10022 }
10023
10024 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10025 struct genl_info *info)
10026 {
10027 struct net_device *dev = info->user_ptr[1];
10028 struct wireless_dev *wdev = dev->ieee80211_ptr;
10029
10030 if (wdev->iftype != NL80211_IFTYPE_AP &&
10031 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10032 return -EINVAL;
10033
10034 if (wdev->ap_unexpected_nlportid)
10035 return -EBUSY;
10036
10037 wdev->ap_unexpected_nlportid = info->snd_portid;
10038 return 0;
10039 }
10040
10041 static int nl80211_probe_client(struct sk_buff *skb,
10042 struct genl_info *info)
10043 {
10044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10045 struct net_device *dev = info->user_ptr[1];
10046 struct wireless_dev *wdev = dev->ieee80211_ptr;
10047 struct sk_buff *msg;
10048 void *hdr;
10049 const u8 *addr;
10050 u64 cookie;
10051 int err;
10052
10053 if (wdev->iftype != NL80211_IFTYPE_AP &&
10054 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10055 return -EOPNOTSUPP;
10056
10057 if (!info->attrs[NL80211_ATTR_MAC])
10058 return -EINVAL;
10059
10060 if (!rdev->ops->probe_client)
10061 return -EOPNOTSUPP;
10062
10063 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10064 if (!msg)
10065 return -ENOMEM;
10066
10067 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10068 NL80211_CMD_PROBE_CLIENT);
10069 if (!hdr) {
10070 err = -ENOBUFS;
10071 goto free_msg;
10072 }
10073
10074 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10075
10076 err = rdev_probe_client(rdev, dev, addr, &cookie);
10077 if (err)
10078 goto free_msg;
10079
10080 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10081 goto nla_put_failure;
10082
10083 genlmsg_end(msg, hdr);
10084
10085 return genlmsg_reply(msg, info);
10086
10087 nla_put_failure:
10088 err = -ENOBUFS;
10089 free_msg:
10090 nlmsg_free(msg);
10091 return err;
10092 }
10093
10094 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10095 {
10096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10097 struct cfg80211_beacon_registration *reg, *nreg;
10098 int rv;
10099
10100 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10101 return -EOPNOTSUPP;
10102
10103 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10104 if (!nreg)
10105 return -ENOMEM;
10106
10107 /* First, check if already registered. */
10108 spin_lock_bh(&rdev->beacon_registrations_lock);
10109 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10110 if (reg->nlportid == info->snd_portid) {
10111 rv = -EALREADY;
10112 goto out_err;
10113 }
10114 }
10115 /* Add it to the list */
10116 nreg->nlportid = info->snd_portid;
10117 list_add(&nreg->list, &rdev->beacon_registrations);
10118
10119 spin_unlock_bh(&rdev->beacon_registrations_lock);
10120
10121 return 0;
10122 out_err:
10123 spin_unlock_bh(&rdev->beacon_registrations_lock);
10124 kfree(nreg);
10125 return rv;
10126 }
10127
10128 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10129 {
10130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10131 struct wireless_dev *wdev = info->user_ptr[1];
10132 int err;
10133
10134 if (!rdev->ops->start_p2p_device)
10135 return -EOPNOTSUPP;
10136
10137 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10138 return -EOPNOTSUPP;
10139
10140 if (wdev->p2p_started)
10141 return 0;
10142
10143 if (rfkill_blocked(rdev->rfkill))
10144 return -ERFKILL;
10145
10146 err = rdev_start_p2p_device(rdev, wdev);
10147 if (err)
10148 return err;
10149
10150 wdev->p2p_started = true;
10151 rdev->opencount++;
10152
10153 return 0;
10154 }
10155
10156 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10157 {
10158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10159 struct wireless_dev *wdev = info->user_ptr[1];
10160
10161 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10162 return -EOPNOTSUPP;
10163
10164 if (!rdev->ops->stop_p2p_device)
10165 return -EOPNOTSUPP;
10166
10167 cfg80211_stop_p2p_device(rdev, wdev);
10168
10169 return 0;
10170 }
10171
10172 static int nl80211_get_protocol_features(struct sk_buff *skb,
10173 struct genl_info *info)
10174 {
10175 void *hdr;
10176 struct sk_buff *msg;
10177
10178 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10179 if (!msg)
10180 return -ENOMEM;
10181
10182 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10183 NL80211_CMD_GET_PROTOCOL_FEATURES);
10184 if (!hdr)
10185 goto nla_put_failure;
10186
10187 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10188 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10189 goto nla_put_failure;
10190
10191 genlmsg_end(msg, hdr);
10192 return genlmsg_reply(msg, info);
10193
10194 nla_put_failure:
10195 kfree_skb(msg);
10196 return -ENOBUFS;
10197 }
10198
10199 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10200 {
10201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10202 struct cfg80211_update_ft_ies_params ft_params;
10203 struct net_device *dev = info->user_ptr[1];
10204
10205 if (!rdev->ops->update_ft_ies)
10206 return -EOPNOTSUPP;
10207
10208 if (!info->attrs[NL80211_ATTR_MDID] ||
10209 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10210 return -EINVAL;
10211
10212 memset(&ft_params, 0, sizeof(ft_params));
10213 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10214 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10215 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10216
10217 return rdev_update_ft_ies(rdev, dev, &ft_params);
10218 }
10219
10220 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10221 struct genl_info *info)
10222 {
10223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10224 struct wireless_dev *wdev = info->user_ptr[1];
10225 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10226 u16 duration;
10227 int ret;
10228
10229 if (!rdev->ops->crit_proto_start)
10230 return -EOPNOTSUPP;
10231
10232 if (WARN_ON(!rdev->ops->crit_proto_stop))
10233 return -EINVAL;
10234
10235 if (rdev->crit_proto_nlportid)
10236 return -EBUSY;
10237
10238 /* determine protocol if provided */
10239 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10240 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10241
10242 if (proto >= NUM_NL80211_CRIT_PROTO)
10243 return -EINVAL;
10244
10245 /* timeout must be provided */
10246 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10247 return -EINVAL;
10248
10249 duration =
10250 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10251
10252 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10253 return -ERANGE;
10254
10255 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10256 if (!ret)
10257 rdev->crit_proto_nlportid = info->snd_portid;
10258
10259 return ret;
10260 }
10261
10262 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10263 struct genl_info *info)
10264 {
10265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10266 struct wireless_dev *wdev = info->user_ptr[1];
10267
10268 if (!rdev->ops->crit_proto_stop)
10269 return -EOPNOTSUPP;
10270
10271 if (rdev->crit_proto_nlportid) {
10272 rdev->crit_proto_nlportid = 0;
10273 rdev_crit_proto_stop(rdev, wdev);
10274 }
10275 return 0;
10276 }
10277
10278 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10279 {
10280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10281 struct wireless_dev *wdev =
10282 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10283 int i, err;
10284 u32 vid, subcmd;
10285
10286 if (!rdev->wiphy.vendor_commands)
10287 return -EOPNOTSUPP;
10288
10289 if (IS_ERR(wdev)) {
10290 err = PTR_ERR(wdev);
10291 if (err != -EINVAL)
10292 return err;
10293 wdev = NULL;
10294 } else if (wdev->wiphy != &rdev->wiphy) {
10295 return -EINVAL;
10296 }
10297
10298 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10299 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10300 return -EINVAL;
10301
10302 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10303 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10304 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10305 const struct wiphy_vendor_command *vcmd;
10306 void *data = NULL;
10307 int len = 0;
10308
10309 vcmd = &rdev->wiphy.vendor_commands[i];
10310
10311 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10312 continue;
10313
10314 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10315 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10316 if (!wdev)
10317 return -EINVAL;
10318 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10319 !wdev->netdev)
10320 return -EINVAL;
10321
10322 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10323 if (wdev->netdev &&
10324 !netif_running(wdev->netdev))
10325 return -ENETDOWN;
10326 if (!wdev->netdev && !wdev->p2p_started)
10327 return -ENETDOWN;
10328 }
10329
10330 if (!vcmd->doit)
10331 return -EOPNOTSUPP;
10332 } else {
10333 wdev = NULL;
10334 }
10335
10336 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10337 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10338 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10339 }
10340
10341 rdev->cur_cmd_info = info;
10342 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10343 data, len);
10344 rdev->cur_cmd_info = NULL;
10345 return err;
10346 }
10347
10348 return -EOPNOTSUPP;
10349 }
10350
10351 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10352 struct netlink_callback *cb,
10353 struct cfg80211_registered_device **rdev,
10354 struct wireless_dev **wdev)
10355 {
10356 u32 vid, subcmd;
10357 unsigned int i;
10358 int vcmd_idx = -1;
10359 int err;
10360 void *data = NULL;
10361 unsigned int data_len = 0;
10362
10363 rtnl_lock();
10364
10365 if (cb->args[0]) {
10366 /* subtract the 1 again here */
10367 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10368 struct wireless_dev *tmp;
10369
10370 if (!wiphy) {
10371 err = -ENODEV;
10372 goto out_unlock;
10373 }
10374 *rdev = wiphy_to_rdev(wiphy);
10375 *wdev = NULL;
10376
10377 if (cb->args[1]) {
10378 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
10379 if (tmp->identifier == cb->args[1] - 1) {
10380 *wdev = tmp;
10381 break;
10382 }
10383 }
10384 }
10385
10386 /* keep rtnl locked in successful case */
10387 return 0;
10388 }
10389
10390 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10391 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10392 nl80211_policy);
10393 if (err)
10394 goto out_unlock;
10395
10396 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10397 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10398 err = -EINVAL;
10399 goto out_unlock;
10400 }
10401
10402 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10403 nl80211_fam.attrbuf);
10404 if (IS_ERR(*wdev))
10405 *wdev = NULL;
10406
10407 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10408 nl80211_fam.attrbuf);
10409 if (IS_ERR(*rdev)) {
10410 err = PTR_ERR(*rdev);
10411 goto out_unlock;
10412 }
10413
10414 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10415 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10416
10417 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10418 const struct wiphy_vendor_command *vcmd;
10419
10420 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10421
10422 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10423 continue;
10424
10425 if (!vcmd->dumpit) {
10426 err = -EOPNOTSUPP;
10427 goto out_unlock;
10428 }
10429
10430 vcmd_idx = i;
10431 break;
10432 }
10433
10434 if (vcmd_idx < 0) {
10435 err = -EOPNOTSUPP;
10436 goto out_unlock;
10437 }
10438
10439 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10440 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10441 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10442 }
10443
10444 /* 0 is the first index - add 1 to parse only once */
10445 cb->args[0] = (*rdev)->wiphy_idx + 1;
10446 /* add 1 to know if it was NULL */
10447 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10448 cb->args[2] = vcmd_idx;
10449 cb->args[3] = (unsigned long)data;
10450 cb->args[4] = data_len;
10451
10452 /* keep rtnl locked in successful case */
10453 return 0;
10454 out_unlock:
10455 rtnl_unlock();
10456 return err;
10457 }
10458
10459 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10460 struct netlink_callback *cb)
10461 {
10462 struct cfg80211_registered_device *rdev;
10463 struct wireless_dev *wdev;
10464 unsigned int vcmd_idx;
10465 const struct wiphy_vendor_command *vcmd;
10466 void *data;
10467 int data_len;
10468 int err;
10469 struct nlattr *vendor_data;
10470
10471 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10472 if (err)
10473 return err;
10474
10475 vcmd_idx = cb->args[2];
10476 data = (void *)cb->args[3];
10477 data_len = cb->args[4];
10478 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10479
10480 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10481 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10482 if (!wdev)
10483 return -EINVAL;
10484 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10485 !wdev->netdev)
10486 return -EINVAL;
10487
10488 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10489 if (wdev->netdev &&
10490 !netif_running(wdev->netdev))
10491 return -ENETDOWN;
10492 if (!wdev->netdev && !wdev->p2p_started)
10493 return -ENETDOWN;
10494 }
10495 }
10496
10497 while (1) {
10498 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10499 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10500 NL80211_CMD_VENDOR);
10501 if (!hdr)
10502 break;
10503
10504 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10505 (wdev && nla_put_u64(skb, NL80211_ATTR_WDEV,
10506 wdev_id(wdev)))) {
10507 genlmsg_cancel(skb, hdr);
10508 break;
10509 }
10510
10511 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10512 if (!vendor_data) {
10513 genlmsg_cancel(skb, hdr);
10514 break;
10515 }
10516
10517 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10518 (unsigned long *)&cb->args[5]);
10519 nla_nest_end(skb, vendor_data);
10520
10521 if (err == -ENOBUFS || err == -ENOENT) {
10522 genlmsg_cancel(skb, hdr);
10523 break;
10524 } else if (err) {
10525 genlmsg_cancel(skb, hdr);
10526 goto out;
10527 }
10528
10529 genlmsg_end(skb, hdr);
10530 }
10531
10532 err = skb->len;
10533 out:
10534 rtnl_unlock();
10535 return err;
10536 }
10537
10538 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10539 enum nl80211_commands cmd,
10540 enum nl80211_attrs attr,
10541 int approxlen)
10542 {
10543 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10544
10545 if (WARN_ON(!rdev->cur_cmd_info))
10546 return NULL;
10547
10548 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10549 rdev->cur_cmd_info->snd_portid,
10550 rdev->cur_cmd_info->snd_seq,
10551 cmd, attr, NULL, GFP_KERNEL);
10552 }
10553 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10554
10555 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10556 {
10557 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10558 void *hdr = ((void **)skb->cb)[1];
10559 struct nlattr *data = ((void **)skb->cb)[2];
10560
10561 /* clear CB data for netlink core to own from now on */
10562 memset(skb->cb, 0, sizeof(skb->cb));
10563
10564 if (WARN_ON(!rdev->cur_cmd_info)) {
10565 kfree_skb(skb);
10566 return -EINVAL;
10567 }
10568
10569 nla_nest_end(skb, data);
10570 genlmsg_end(skb, hdr);
10571 return genlmsg_reply(skb, rdev->cur_cmd_info);
10572 }
10573 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10574
10575
10576 static int nl80211_set_qos_map(struct sk_buff *skb,
10577 struct genl_info *info)
10578 {
10579 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10580 struct cfg80211_qos_map *qos_map = NULL;
10581 struct net_device *dev = info->user_ptr[1];
10582 u8 *pos, len, num_des, des_len, des;
10583 int ret;
10584
10585 if (!rdev->ops->set_qos_map)
10586 return -EOPNOTSUPP;
10587
10588 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10589 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10590 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10591
10592 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10593 len > IEEE80211_QOS_MAP_LEN_MAX)
10594 return -EINVAL;
10595
10596 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10597 if (!qos_map)
10598 return -ENOMEM;
10599
10600 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10601 if (num_des) {
10602 des_len = num_des *
10603 sizeof(struct cfg80211_dscp_exception);
10604 memcpy(qos_map->dscp_exception, pos, des_len);
10605 qos_map->num_des = num_des;
10606 for (des = 0; des < num_des; des++) {
10607 if (qos_map->dscp_exception[des].up > 7) {
10608 kfree(qos_map);
10609 return -EINVAL;
10610 }
10611 }
10612 pos += des_len;
10613 }
10614 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10615 }
10616
10617 wdev_lock(dev->ieee80211_ptr);
10618 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10619 if (!ret)
10620 ret = rdev_set_qos_map(rdev, dev, qos_map);
10621 wdev_unlock(dev->ieee80211_ptr);
10622
10623 kfree(qos_map);
10624 return ret;
10625 }
10626
10627 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10628 {
10629 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10630 struct net_device *dev = info->user_ptr[1];
10631 struct wireless_dev *wdev = dev->ieee80211_ptr;
10632 const u8 *peer;
10633 u8 tsid, up;
10634 u16 admitted_time = 0;
10635 int err;
10636
10637 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10638 return -EOPNOTSUPP;
10639
10640 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10641 !info->attrs[NL80211_ATTR_USER_PRIO])
10642 return -EINVAL;
10643
10644 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10645 if (tsid >= IEEE80211_NUM_TIDS)
10646 return -EINVAL;
10647
10648 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10649 if (up >= IEEE80211_NUM_UPS)
10650 return -EINVAL;
10651
10652 /* WMM uses TIDs 0-7 even for TSPEC */
10653 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10654 /* TODO: handle 802.11 TSPEC/admission control
10655 * need more attributes for that (e.g. BA session requirement);
10656 * change the WMM adminssion test above to allow both then
10657 */
10658 return -EINVAL;
10659 }
10660
10661 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10662
10663 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10664 admitted_time =
10665 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10666 if (!admitted_time)
10667 return -EINVAL;
10668 }
10669
10670 wdev_lock(wdev);
10671 switch (wdev->iftype) {
10672 case NL80211_IFTYPE_STATION:
10673 case NL80211_IFTYPE_P2P_CLIENT:
10674 if (wdev->current_bss)
10675 break;
10676 err = -ENOTCONN;
10677 goto out;
10678 default:
10679 err = -EOPNOTSUPP;
10680 goto out;
10681 }
10682
10683 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10684
10685 out:
10686 wdev_unlock(wdev);
10687 return err;
10688 }
10689
10690 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10691 {
10692 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10693 struct net_device *dev = info->user_ptr[1];
10694 struct wireless_dev *wdev = dev->ieee80211_ptr;
10695 const u8 *peer;
10696 u8 tsid;
10697 int err;
10698
10699 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10700 return -EINVAL;
10701
10702 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10703 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10704
10705 wdev_lock(wdev);
10706 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10707 wdev_unlock(wdev);
10708
10709 return err;
10710 }
10711
10712 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10713 struct genl_info *info)
10714 {
10715 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10716 struct net_device *dev = info->user_ptr[1];
10717 struct wireless_dev *wdev = dev->ieee80211_ptr;
10718 struct cfg80211_chan_def chandef = {};
10719 const u8 *addr;
10720 u8 oper_class;
10721 int err;
10722
10723 if (!rdev->ops->tdls_channel_switch ||
10724 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10725 return -EOPNOTSUPP;
10726
10727 switch (dev->ieee80211_ptr->iftype) {
10728 case NL80211_IFTYPE_STATION:
10729 case NL80211_IFTYPE_P2P_CLIENT:
10730 break;
10731 default:
10732 return -EOPNOTSUPP;
10733 }
10734
10735 if (!info->attrs[NL80211_ATTR_MAC] ||
10736 !info->attrs[NL80211_ATTR_OPER_CLASS])
10737 return -EINVAL;
10738
10739 err = nl80211_parse_chandef(rdev, info, &chandef);
10740 if (err)
10741 return err;
10742
10743 /*
10744 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10745 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10746 * specification is not defined for them.
10747 */
10748 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10749 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10750 chandef.width != NL80211_CHAN_WIDTH_20)
10751 return -EINVAL;
10752
10753 /* we will be active on the TDLS link */
10754 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10755 wdev->iftype))
10756 return -EINVAL;
10757
10758 /* don't allow switching to DFS channels */
10759 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10760 return -EINVAL;
10761
10762 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10763 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10764
10765 wdev_lock(wdev);
10766 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10767 wdev_unlock(wdev);
10768
10769 return err;
10770 }
10771
10772 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10773 struct genl_info *info)
10774 {
10775 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10776 struct net_device *dev = info->user_ptr[1];
10777 struct wireless_dev *wdev = dev->ieee80211_ptr;
10778 const u8 *addr;
10779
10780 if (!rdev->ops->tdls_channel_switch ||
10781 !rdev->ops->tdls_cancel_channel_switch ||
10782 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10783 return -EOPNOTSUPP;
10784
10785 switch (dev->ieee80211_ptr->iftype) {
10786 case NL80211_IFTYPE_STATION:
10787 case NL80211_IFTYPE_P2P_CLIENT:
10788 break;
10789 default:
10790 return -EOPNOTSUPP;
10791 }
10792
10793 if (!info->attrs[NL80211_ATTR_MAC])
10794 return -EINVAL;
10795
10796 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10797
10798 wdev_lock(wdev);
10799 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10800 wdev_unlock(wdev);
10801
10802 return 0;
10803 }
10804
10805 #define NL80211_FLAG_NEED_WIPHY 0x01
10806 #define NL80211_FLAG_NEED_NETDEV 0x02
10807 #define NL80211_FLAG_NEED_RTNL 0x04
10808 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10809 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10810 NL80211_FLAG_CHECK_NETDEV_UP)
10811 #define NL80211_FLAG_NEED_WDEV 0x10
10812 /* If a netdev is associated, it must be UP, P2P must be started */
10813 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10814 NL80211_FLAG_CHECK_NETDEV_UP)
10815 #define NL80211_FLAG_CLEAR_SKB 0x20
10816
10817 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10818 struct genl_info *info)
10819 {
10820 struct cfg80211_registered_device *rdev;
10821 struct wireless_dev *wdev;
10822 struct net_device *dev;
10823 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10824
10825 if (rtnl)
10826 rtnl_lock();
10827
10828 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10829 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10830 if (IS_ERR(rdev)) {
10831 if (rtnl)
10832 rtnl_unlock();
10833 return PTR_ERR(rdev);
10834 }
10835 info->user_ptr[0] = rdev;
10836 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10837 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10838 ASSERT_RTNL();
10839
10840 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10841 info->attrs);
10842 if (IS_ERR(wdev)) {
10843 if (rtnl)
10844 rtnl_unlock();
10845 return PTR_ERR(wdev);
10846 }
10847
10848 dev = wdev->netdev;
10849 rdev = wiphy_to_rdev(wdev->wiphy);
10850
10851 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10852 if (!dev) {
10853 if (rtnl)
10854 rtnl_unlock();
10855 return -EINVAL;
10856 }
10857
10858 info->user_ptr[1] = dev;
10859 } else {
10860 info->user_ptr[1] = wdev;
10861 }
10862
10863 if (dev) {
10864 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10865 !netif_running(dev)) {
10866 if (rtnl)
10867 rtnl_unlock();
10868 return -ENETDOWN;
10869 }
10870
10871 dev_hold(dev);
10872 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10873 if (!wdev->p2p_started) {
10874 if (rtnl)
10875 rtnl_unlock();
10876 return -ENETDOWN;
10877 }
10878 }
10879
10880 info->user_ptr[0] = rdev;
10881 }
10882
10883 return 0;
10884 }
10885
10886 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10887 struct genl_info *info)
10888 {
10889 if (info->user_ptr[1]) {
10890 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10891 struct wireless_dev *wdev = info->user_ptr[1];
10892
10893 if (wdev->netdev)
10894 dev_put(wdev->netdev);
10895 } else {
10896 dev_put(info->user_ptr[1]);
10897 }
10898 }
10899
10900 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10901 rtnl_unlock();
10902
10903 /* If needed, clear the netlink message payload from the SKB
10904 * as it might contain key data that shouldn't stick around on
10905 * the heap after the SKB is freed. The netlink message header
10906 * is still needed for further processing, so leave it intact.
10907 */
10908 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10909 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10910
10911 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10912 }
10913 }
10914
10915 static const struct genl_ops nl80211_ops[] = {
10916 {
10917 .cmd = NL80211_CMD_GET_WIPHY,
10918 .doit = nl80211_get_wiphy,
10919 .dumpit = nl80211_dump_wiphy,
10920 .done = nl80211_dump_wiphy_done,
10921 .policy = nl80211_policy,
10922 /* can be retrieved by unprivileged users */
10923 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10924 NL80211_FLAG_NEED_RTNL,
10925 },
10926 {
10927 .cmd = NL80211_CMD_SET_WIPHY,
10928 .doit = nl80211_set_wiphy,
10929 .policy = nl80211_policy,
10930 .flags = GENL_ADMIN_PERM,
10931 .internal_flags = NL80211_FLAG_NEED_RTNL,
10932 },
10933 {
10934 .cmd = NL80211_CMD_GET_INTERFACE,
10935 .doit = nl80211_get_interface,
10936 .dumpit = nl80211_dump_interface,
10937 .policy = nl80211_policy,
10938 /* can be retrieved by unprivileged users */
10939 .internal_flags = NL80211_FLAG_NEED_WDEV |
10940 NL80211_FLAG_NEED_RTNL,
10941 },
10942 {
10943 .cmd = NL80211_CMD_SET_INTERFACE,
10944 .doit = nl80211_set_interface,
10945 .policy = nl80211_policy,
10946 .flags = GENL_ADMIN_PERM,
10947 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10948 NL80211_FLAG_NEED_RTNL,
10949 },
10950 {
10951 .cmd = NL80211_CMD_NEW_INTERFACE,
10952 .doit = nl80211_new_interface,
10953 .policy = nl80211_policy,
10954 .flags = GENL_ADMIN_PERM,
10955 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10956 NL80211_FLAG_NEED_RTNL,
10957 },
10958 {
10959 .cmd = NL80211_CMD_DEL_INTERFACE,
10960 .doit = nl80211_del_interface,
10961 .policy = nl80211_policy,
10962 .flags = GENL_ADMIN_PERM,
10963 .internal_flags = NL80211_FLAG_NEED_WDEV |
10964 NL80211_FLAG_NEED_RTNL,
10965 },
10966 {
10967 .cmd = NL80211_CMD_GET_KEY,
10968 .doit = nl80211_get_key,
10969 .policy = nl80211_policy,
10970 .flags = GENL_ADMIN_PERM,
10971 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10972 NL80211_FLAG_NEED_RTNL,
10973 },
10974 {
10975 .cmd = NL80211_CMD_SET_KEY,
10976 .doit = nl80211_set_key,
10977 .policy = nl80211_policy,
10978 .flags = GENL_ADMIN_PERM,
10979 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10980 NL80211_FLAG_NEED_RTNL |
10981 NL80211_FLAG_CLEAR_SKB,
10982 },
10983 {
10984 .cmd = NL80211_CMD_NEW_KEY,
10985 .doit = nl80211_new_key,
10986 .policy = nl80211_policy,
10987 .flags = GENL_ADMIN_PERM,
10988 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10989 NL80211_FLAG_NEED_RTNL |
10990 NL80211_FLAG_CLEAR_SKB,
10991 },
10992 {
10993 .cmd = NL80211_CMD_DEL_KEY,
10994 .doit = nl80211_del_key,
10995 .policy = nl80211_policy,
10996 .flags = GENL_ADMIN_PERM,
10997 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10998 NL80211_FLAG_NEED_RTNL,
10999 },
11000 {
11001 .cmd = NL80211_CMD_SET_BEACON,
11002 .policy = nl80211_policy,
11003 .flags = GENL_ADMIN_PERM,
11004 .doit = nl80211_set_beacon,
11005 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11006 NL80211_FLAG_NEED_RTNL,
11007 },
11008 {
11009 .cmd = NL80211_CMD_START_AP,
11010 .policy = nl80211_policy,
11011 .flags = GENL_ADMIN_PERM,
11012 .doit = nl80211_start_ap,
11013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11014 NL80211_FLAG_NEED_RTNL,
11015 },
11016 {
11017 .cmd = NL80211_CMD_STOP_AP,
11018 .policy = nl80211_policy,
11019 .flags = GENL_ADMIN_PERM,
11020 .doit = nl80211_stop_ap,
11021 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11022 NL80211_FLAG_NEED_RTNL,
11023 },
11024 {
11025 .cmd = NL80211_CMD_GET_STATION,
11026 .doit = nl80211_get_station,
11027 .dumpit = nl80211_dump_station,
11028 .policy = nl80211_policy,
11029 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11030 NL80211_FLAG_NEED_RTNL,
11031 },
11032 {
11033 .cmd = NL80211_CMD_SET_STATION,
11034 .doit = nl80211_set_station,
11035 .policy = nl80211_policy,
11036 .flags = GENL_ADMIN_PERM,
11037 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11038 NL80211_FLAG_NEED_RTNL,
11039 },
11040 {
11041 .cmd = NL80211_CMD_NEW_STATION,
11042 .doit = nl80211_new_station,
11043 .policy = nl80211_policy,
11044 .flags = GENL_ADMIN_PERM,
11045 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11046 NL80211_FLAG_NEED_RTNL,
11047 },
11048 {
11049 .cmd = NL80211_CMD_DEL_STATION,
11050 .doit = nl80211_del_station,
11051 .policy = nl80211_policy,
11052 .flags = GENL_ADMIN_PERM,
11053 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11054 NL80211_FLAG_NEED_RTNL,
11055 },
11056 {
11057 .cmd = NL80211_CMD_GET_MPATH,
11058 .doit = nl80211_get_mpath,
11059 .dumpit = nl80211_dump_mpath,
11060 .policy = nl80211_policy,
11061 .flags = GENL_ADMIN_PERM,
11062 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11063 NL80211_FLAG_NEED_RTNL,
11064 },
11065 {
11066 .cmd = NL80211_CMD_GET_MPP,
11067 .doit = nl80211_get_mpp,
11068 .dumpit = nl80211_dump_mpp,
11069 .policy = nl80211_policy,
11070 .flags = GENL_ADMIN_PERM,
11071 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11072 NL80211_FLAG_NEED_RTNL,
11073 },
11074 {
11075 .cmd = NL80211_CMD_SET_MPATH,
11076 .doit = nl80211_set_mpath,
11077 .policy = nl80211_policy,
11078 .flags = GENL_ADMIN_PERM,
11079 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11080 NL80211_FLAG_NEED_RTNL,
11081 },
11082 {
11083 .cmd = NL80211_CMD_NEW_MPATH,
11084 .doit = nl80211_new_mpath,
11085 .policy = nl80211_policy,
11086 .flags = GENL_ADMIN_PERM,
11087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11088 NL80211_FLAG_NEED_RTNL,
11089 },
11090 {
11091 .cmd = NL80211_CMD_DEL_MPATH,
11092 .doit = nl80211_del_mpath,
11093 .policy = nl80211_policy,
11094 .flags = GENL_ADMIN_PERM,
11095 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11096 NL80211_FLAG_NEED_RTNL,
11097 },
11098 {
11099 .cmd = NL80211_CMD_SET_BSS,
11100 .doit = nl80211_set_bss,
11101 .policy = nl80211_policy,
11102 .flags = GENL_ADMIN_PERM,
11103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11104 NL80211_FLAG_NEED_RTNL,
11105 },
11106 {
11107 .cmd = NL80211_CMD_GET_REG,
11108 .doit = nl80211_get_reg_do,
11109 .dumpit = nl80211_get_reg_dump,
11110 .policy = nl80211_policy,
11111 .internal_flags = NL80211_FLAG_NEED_RTNL,
11112 /* can be retrieved by unprivileged users */
11113 },
11114 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
11115 {
11116 .cmd = NL80211_CMD_SET_REG,
11117 .doit = nl80211_set_reg,
11118 .policy = nl80211_policy,
11119 .flags = GENL_ADMIN_PERM,
11120 .internal_flags = NL80211_FLAG_NEED_RTNL,
11121 },
11122 #endif
11123 {
11124 .cmd = NL80211_CMD_REQ_SET_REG,
11125 .doit = nl80211_req_set_reg,
11126 .policy = nl80211_policy,
11127 .flags = GENL_ADMIN_PERM,
11128 },
11129 {
11130 .cmd = NL80211_CMD_GET_MESH_CONFIG,
11131 .doit = nl80211_get_mesh_config,
11132 .policy = nl80211_policy,
11133 /* can be retrieved by unprivileged users */
11134 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11135 NL80211_FLAG_NEED_RTNL,
11136 },
11137 {
11138 .cmd = NL80211_CMD_SET_MESH_CONFIG,
11139 .doit = nl80211_update_mesh_config,
11140 .policy = nl80211_policy,
11141 .flags = GENL_ADMIN_PERM,
11142 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11143 NL80211_FLAG_NEED_RTNL,
11144 },
11145 {
11146 .cmd = NL80211_CMD_TRIGGER_SCAN,
11147 .doit = nl80211_trigger_scan,
11148 .policy = nl80211_policy,
11149 .flags = GENL_ADMIN_PERM,
11150 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11151 NL80211_FLAG_NEED_RTNL,
11152 },
11153 {
11154 .cmd = NL80211_CMD_ABORT_SCAN,
11155 .doit = nl80211_abort_scan,
11156 .policy = nl80211_policy,
11157 .flags = GENL_ADMIN_PERM,
11158 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11159 NL80211_FLAG_NEED_RTNL,
11160 },
11161 {
11162 .cmd = NL80211_CMD_GET_SCAN,
11163 .policy = nl80211_policy,
11164 .dumpit = nl80211_dump_scan,
11165 },
11166 {
11167 .cmd = NL80211_CMD_START_SCHED_SCAN,
11168 .doit = nl80211_start_sched_scan,
11169 .policy = nl80211_policy,
11170 .flags = GENL_ADMIN_PERM,
11171 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11172 NL80211_FLAG_NEED_RTNL,
11173 },
11174 {
11175 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11176 .doit = nl80211_stop_sched_scan,
11177 .policy = nl80211_policy,
11178 .flags = GENL_ADMIN_PERM,
11179 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11180 NL80211_FLAG_NEED_RTNL,
11181 },
11182 {
11183 .cmd = NL80211_CMD_AUTHENTICATE,
11184 .doit = nl80211_authenticate,
11185 .policy = nl80211_policy,
11186 .flags = GENL_ADMIN_PERM,
11187 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11188 NL80211_FLAG_NEED_RTNL |
11189 NL80211_FLAG_CLEAR_SKB,
11190 },
11191 {
11192 .cmd = NL80211_CMD_ASSOCIATE,
11193 .doit = nl80211_associate,
11194 .policy = nl80211_policy,
11195 .flags = GENL_ADMIN_PERM,
11196 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11197 NL80211_FLAG_NEED_RTNL,
11198 },
11199 {
11200 .cmd = NL80211_CMD_DEAUTHENTICATE,
11201 .doit = nl80211_deauthenticate,
11202 .policy = nl80211_policy,
11203 .flags = GENL_ADMIN_PERM,
11204 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11205 NL80211_FLAG_NEED_RTNL,
11206 },
11207 {
11208 .cmd = NL80211_CMD_DISASSOCIATE,
11209 .doit = nl80211_disassociate,
11210 .policy = nl80211_policy,
11211 .flags = GENL_ADMIN_PERM,
11212 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11213 NL80211_FLAG_NEED_RTNL,
11214 },
11215 {
11216 .cmd = NL80211_CMD_JOIN_IBSS,
11217 .doit = nl80211_join_ibss,
11218 .policy = nl80211_policy,
11219 .flags = GENL_ADMIN_PERM,
11220 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11221 NL80211_FLAG_NEED_RTNL,
11222 },
11223 {
11224 .cmd = NL80211_CMD_LEAVE_IBSS,
11225 .doit = nl80211_leave_ibss,
11226 .policy = nl80211_policy,
11227 .flags = GENL_ADMIN_PERM,
11228 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11229 NL80211_FLAG_NEED_RTNL,
11230 },
11231 #ifdef CONFIG_NL80211_TESTMODE
11232 {
11233 .cmd = NL80211_CMD_TESTMODE,
11234 .doit = nl80211_testmode_do,
11235 .dumpit = nl80211_testmode_dump,
11236 .policy = nl80211_policy,
11237 .flags = GENL_ADMIN_PERM,
11238 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11239 NL80211_FLAG_NEED_RTNL,
11240 },
11241 #endif
11242 {
11243 .cmd = NL80211_CMD_CONNECT,
11244 .doit = nl80211_connect,
11245 .policy = nl80211_policy,
11246 .flags = GENL_ADMIN_PERM,
11247 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11248 NL80211_FLAG_NEED_RTNL,
11249 },
11250 {
11251 .cmd = NL80211_CMD_DISCONNECT,
11252 .doit = nl80211_disconnect,
11253 .policy = nl80211_policy,
11254 .flags = GENL_ADMIN_PERM,
11255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11256 NL80211_FLAG_NEED_RTNL,
11257 },
11258 {
11259 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11260 .doit = nl80211_wiphy_netns,
11261 .policy = nl80211_policy,
11262 .flags = GENL_ADMIN_PERM,
11263 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11264 NL80211_FLAG_NEED_RTNL,
11265 },
11266 {
11267 .cmd = NL80211_CMD_GET_SURVEY,
11268 .policy = nl80211_policy,
11269 .dumpit = nl80211_dump_survey,
11270 },
11271 {
11272 .cmd = NL80211_CMD_SET_PMKSA,
11273 .doit = nl80211_setdel_pmksa,
11274 .policy = nl80211_policy,
11275 .flags = GENL_ADMIN_PERM,
11276 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11277 NL80211_FLAG_NEED_RTNL,
11278 },
11279 {
11280 .cmd = NL80211_CMD_DEL_PMKSA,
11281 .doit = nl80211_setdel_pmksa,
11282 .policy = nl80211_policy,
11283 .flags = GENL_ADMIN_PERM,
11284 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11285 NL80211_FLAG_NEED_RTNL,
11286 },
11287 {
11288 .cmd = NL80211_CMD_FLUSH_PMKSA,
11289 .doit = nl80211_flush_pmksa,
11290 .policy = nl80211_policy,
11291 .flags = GENL_ADMIN_PERM,
11292 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11293 NL80211_FLAG_NEED_RTNL,
11294 },
11295 {
11296 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11297 .doit = nl80211_remain_on_channel,
11298 .policy = nl80211_policy,
11299 .flags = GENL_ADMIN_PERM,
11300 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11301 NL80211_FLAG_NEED_RTNL,
11302 },
11303 {
11304 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11305 .doit = nl80211_cancel_remain_on_channel,
11306 .policy = nl80211_policy,
11307 .flags = GENL_ADMIN_PERM,
11308 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11309 NL80211_FLAG_NEED_RTNL,
11310 },
11311 {
11312 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11313 .doit = nl80211_set_tx_bitrate_mask,
11314 .policy = nl80211_policy,
11315 .flags = GENL_ADMIN_PERM,
11316 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11317 NL80211_FLAG_NEED_RTNL,
11318 },
11319 {
11320 .cmd = NL80211_CMD_REGISTER_FRAME,
11321 .doit = nl80211_register_mgmt,
11322 .policy = nl80211_policy,
11323 .flags = GENL_ADMIN_PERM,
11324 .internal_flags = NL80211_FLAG_NEED_WDEV |
11325 NL80211_FLAG_NEED_RTNL,
11326 },
11327 {
11328 .cmd = NL80211_CMD_FRAME,
11329 .doit = nl80211_tx_mgmt,
11330 .policy = nl80211_policy,
11331 .flags = GENL_ADMIN_PERM,
11332 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11333 NL80211_FLAG_NEED_RTNL,
11334 },
11335 {
11336 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11337 .doit = nl80211_tx_mgmt_cancel_wait,
11338 .policy = nl80211_policy,
11339 .flags = GENL_ADMIN_PERM,
11340 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11341 NL80211_FLAG_NEED_RTNL,
11342 },
11343 {
11344 .cmd = NL80211_CMD_SET_POWER_SAVE,
11345 .doit = nl80211_set_power_save,
11346 .policy = nl80211_policy,
11347 .flags = GENL_ADMIN_PERM,
11348 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11349 NL80211_FLAG_NEED_RTNL,
11350 },
11351 {
11352 .cmd = NL80211_CMD_GET_POWER_SAVE,
11353 .doit = nl80211_get_power_save,
11354 .policy = nl80211_policy,
11355 /* can be retrieved by unprivileged users */
11356 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11357 NL80211_FLAG_NEED_RTNL,
11358 },
11359 {
11360 .cmd = NL80211_CMD_SET_CQM,
11361 .doit = nl80211_set_cqm,
11362 .policy = nl80211_policy,
11363 .flags = GENL_ADMIN_PERM,
11364 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11365 NL80211_FLAG_NEED_RTNL,
11366 },
11367 {
11368 .cmd = NL80211_CMD_SET_CHANNEL,
11369 .doit = nl80211_set_channel,
11370 .policy = nl80211_policy,
11371 .flags = GENL_ADMIN_PERM,
11372 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11373 NL80211_FLAG_NEED_RTNL,
11374 },
11375 {
11376 .cmd = NL80211_CMD_SET_WDS_PEER,
11377 .doit = nl80211_set_wds_peer,
11378 .policy = nl80211_policy,
11379 .flags = GENL_ADMIN_PERM,
11380 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11381 NL80211_FLAG_NEED_RTNL,
11382 },
11383 {
11384 .cmd = NL80211_CMD_JOIN_MESH,
11385 .doit = nl80211_join_mesh,
11386 .policy = nl80211_policy,
11387 .flags = GENL_ADMIN_PERM,
11388 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11389 NL80211_FLAG_NEED_RTNL,
11390 },
11391 {
11392 .cmd = NL80211_CMD_LEAVE_MESH,
11393 .doit = nl80211_leave_mesh,
11394 .policy = nl80211_policy,
11395 .flags = GENL_ADMIN_PERM,
11396 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11397 NL80211_FLAG_NEED_RTNL,
11398 },
11399 {
11400 .cmd = NL80211_CMD_JOIN_OCB,
11401 .doit = nl80211_join_ocb,
11402 .policy = nl80211_policy,
11403 .flags = GENL_ADMIN_PERM,
11404 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11405 NL80211_FLAG_NEED_RTNL,
11406 },
11407 {
11408 .cmd = NL80211_CMD_LEAVE_OCB,
11409 .doit = nl80211_leave_ocb,
11410 .policy = nl80211_policy,
11411 .flags = GENL_ADMIN_PERM,
11412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11413 NL80211_FLAG_NEED_RTNL,
11414 },
11415 #ifdef CONFIG_PM
11416 {
11417 .cmd = NL80211_CMD_GET_WOWLAN,
11418 .doit = nl80211_get_wowlan,
11419 .policy = nl80211_policy,
11420 /* can be retrieved by unprivileged users */
11421 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11422 NL80211_FLAG_NEED_RTNL,
11423 },
11424 {
11425 .cmd = NL80211_CMD_SET_WOWLAN,
11426 .doit = nl80211_set_wowlan,
11427 .policy = nl80211_policy,
11428 .flags = GENL_ADMIN_PERM,
11429 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11430 NL80211_FLAG_NEED_RTNL,
11431 },
11432 #endif
11433 {
11434 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11435 .doit = nl80211_set_rekey_data,
11436 .policy = nl80211_policy,
11437 .flags = GENL_ADMIN_PERM,
11438 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11439 NL80211_FLAG_NEED_RTNL |
11440 NL80211_FLAG_CLEAR_SKB,
11441 },
11442 {
11443 .cmd = NL80211_CMD_TDLS_MGMT,
11444 .doit = nl80211_tdls_mgmt,
11445 .policy = nl80211_policy,
11446 .flags = GENL_ADMIN_PERM,
11447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11448 NL80211_FLAG_NEED_RTNL,
11449 },
11450 {
11451 .cmd = NL80211_CMD_TDLS_OPER,
11452 .doit = nl80211_tdls_oper,
11453 .policy = nl80211_policy,
11454 .flags = GENL_ADMIN_PERM,
11455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11456 NL80211_FLAG_NEED_RTNL,
11457 },
11458 {
11459 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11460 .doit = nl80211_register_unexpected_frame,
11461 .policy = nl80211_policy,
11462 .flags = GENL_ADMIN_PERM,
11463 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11464 NL80211_FLAG_NEED_RTNL,
11465 },
11466 {
11467 .cmd = NL80211_CMD_PROBE_CLIENT,
11468 .doit = nl80211_probe_client,
11469 .policy = nl80211_policy,
11470 .flags = GENL_ADMIN_PERM,
11471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11472 NL80211_FLAG_NEED_RTNL,
11473 },
11474 {
11475 .cmd = NL80211_CMD_REGISTER_BEACONS,
11476 .doit = nl80211_register_beacons,
11477 .policy = nl80211_policy,
11478 .flags = GENL_ADMIN_PERM,
11479 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11480 NL80211_FLAG_NEED_RTNL,
11481 },
11482 {
11483 .cmd = NL80211_CMD_SET_NOACK_MAP,
11484 .doit = nl80211_set_noack_map,
11485 .policy = nl80211_policy,
11486 .flags = GENL_ADMIN_PERM,
11487 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11488 NL80211_FLAG_NEED_RTNL,
11489 },
11490 {
11491 .cmd = NL80211_CMD_START_P2P_DEVICE,
11492 .doit = nl80211_start_p2p_device,
11493 .policy = nl80211_policy,
11494 .flags = GENL_ADMIN_PERM,
11495 .internal_flags = NL80211_FLAG_NEED_WDEV |
11496 NL80211_FLAG_NEED_RTNL,
11497 },
11498 {
11499 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11500 .doit = nl80211_stop_p2p_device,
11501 .policy = nl80211_policy,
11502 .flags = GENL_ADMIN_PERM,
11503 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11504 NL80211_FLAG_NEED_RTNL,
11505 },
11506 {
11507 .cmd = NL80211_CMD_SET_MCAST_RATE,
11508 .doit = nl80211_set_mcast_rate,
11509 .policy = nl80211_policy,
11510 .flags = GENL_ADMIN_PERM,
11511 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11512 NL80211_FLAG_NEED_RTNL,
11513 },
11514 {
11515 .cmd = NL80211_CMD_SET_MAC_ACL,
11516 .doit = nl80211_set_mac_acl,
11517 .policy = nl80211_policy,
11518 .flags = GENL_ADMIN_PERM,
11519 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11520 NL80211_FLAG_NEED_RTNL,
11521 },
11522 {
11523 .cmd = NL80211_CMD_RADAR_DETECT,
11524 .doit = nl80211_start_radar_detection,
11525 .policy = nl80211_policy,
11526 .flags = GENL_ADMIN_PERM,
11527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11528 NL80211_FLAG_NEED_RTNL,
11529 },
11530 {
11531 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11532 .doit = nl80211_get_protocol_features,
11533 .policy = nl80211_policy,
11534 },
11535 {
11536 .cmd = NL80211_CMD_UPDATE_FT_IES,
11537 .doit = nl80211_update_ft_ies,
11538 .policy = nl80211_policy,
11539 .flags = GENL_ADMIN_PERM,
11540 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11541 NL80211_FLAG_NEED_RTNL,
11542 },
11543 {
11544 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11545 .doit = nl80211_crit_protocol_start,
11546 .policy = nl80211_policy,
11547 .flags = GENL_ADMIN_PERM,
11548 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11549 NL80211_FLAG_NEED_RTNL,
11550 },
11551 {
11552 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11553 .doit = nl80211_crit_protocol_stop,
11554 .policy = nl80211_policy,
11555 .flags = GENL_ADMIN_PERM,
11556 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11557 NL80211_FLAG_NEED_RTNL,
11558 },
11559 {
11560 .cmd = NL80211_CMD_GET_COALESCE,
11561 .doit = nl80211_get_coalesce,
11562 .policy = nl80211_policy,
11563 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11564 NL80211_FLAG_NEED_RTNL,
11565 },
11566 {
11567 .cmd = NL80211_CMD_SET_COALESCE,
11568 .doit = nl80211_set_coalesce,
11569 .policy = nl80211_policy,
11570 .flags = GENL_ADMIN_PERM,
11571 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11572 NL80211_FLAG_NEED_RTNL,
11573 },
11574 {
11575 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11576 .doit = nl80211_channel_switch,
11577 .policy = nl80211_policy,
11578 .flags = GENL_ADMIN_PERM,
11579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11580 NL80211_FLAG_NEED_RTNL,
11581 },
11582 {
11583 .cmd = NL80211_CMD_VENDOR,
11584 .doit = nl80211_vendor_cmd,
11585 .dumpit = nl80211_vendor_cmd_dump,
11586 .policy = nl80211_policy,
11587 .flags = GENL_ADMIN_PERM,
11588 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11589 NL80211_FLAG_NEED_RTNL,
11590 },
11591 {
11592 .cmd = NL80211_CMD_SET_QOS_MAP,
11593 .doit = nl80211_set_qos_map,
11594 .policy = nl80211_policy,
11595 .flags = GENL_ADMIN_PERM,
11596 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11597 NL80211_FLAG_NEED_RTNL,
11598 },
11599 {
11600 .cmd = NL80211_CMD_ADD_TX_TS,
11601 .doit = nl80211_add_tx_ts,
11602 .policy = nl80211_policy,
11603 .flags = GENL_ADMIN_PERM,
11604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11605 NL80211_FLAG_NEED_RTNL,
11606 },
11607 {
11608 .cmd = NL80211_CMD_DEL_TX_TS,
11609 .doit = nl80211_del_tx_ts,
11610 .policy = nl80211_policy,
11611 .flags = GENL_ADMIN_PERM,
11612 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11613 NL80211_FLAG_NEED_RTNL,
11614 },
11615 {
11616 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11617 .doit = nl80211_tdls_channel_switch,
11618 .policy = nl80211_policy,
11619 .flags = GENL_ADMIN_PERM,
11620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11621 NL80211_FLAG_NEED_RTNL,
11622 },
11623 {
11624 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11625 .doit = nl80211_tdls_cancel_channel_switch,
11626 .policy = nl80211_policy,
11627 .flags = GENL_ADMIN_PERM,
11628 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11629 NL80211_FLAG_NEED_RTNL,
11630 },
11631 };
11632
11633 /* notification functions */
11634
11635 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11636 enum nl80211_commands cmd)
11637 {
11638 struct sk_buff *msg;
11639 struct nl80211_dump_wiphy_state state = {};
11640
11641 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11642 cmd != NL80211_CMD_DEL_WIPHY);
11643
11644 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11645 if (!msg)
11646 return;
11647
11648 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11649 nlmsg_free(msg);
11650 return;
11651 }
11652
11653 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11654 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11655 }
11656
11657 static int nl80211_add_scan_req(struct sk_buff *msg,
11658 struct cfg80211_registered_device *rdev)
11659 {
11660 struct cfg80211_scan_request *req = rdev->scan_req;
11661 struct nlattr *nest;
11662 int i;
11663
11664 if (WARN_ON(!req))
11665 return 0;
11666
11667 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11668 if (!nest)
11669 goto nla_put_failure;
11670 for (i = 0; i < req->n_ssids; i++) {
11671 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11672 goto nla_put_failure;
11673 }
11674 nla_nest_end(msg, nest);
11675
11676 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11677 if (!nest)
11678 goto nla_put_failure;
11679 for (i = 0; i < req->n_channels; i++) {
11680 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11681 goto nla_put_failure;
11682 }
11683 nla_nest_end(msg, nest);
11684
11685 if (req->ie &&
11686 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11687 goto nla_put_failure;
11688
11689 if (req->flags &&
11690 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11691 goto nla_put_failure;
11692
11693 return 0;
11694 nla_put_failure:
11695 return -ENOBUFS;
11696 }
11697
11698 static int nl80211_send_scan_msg(struct sk_buff *msg,
11699 struct cfg80211_registered_device *rdev,
11700 struct wireless_dev *wdev,
11701 u32 portid, u32 seq, int flags,
11702 u32 cmd)
11703 {
11704 void *hdr;
11705
11706 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11707 if (!hdr)
11708 return -1;
11709
11710 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11711 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11712 wdev->netdev->ifindex)) ||
11713 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11714 goto nla_put_failure;
11715
11716 /* ignore errors and send incomplete event anyway */
11717 nl80211_add_scan_req(msg, rdev);
11718
11719 genlmsg_end(msg, hdr);
11720 return 0;
11721
11722 nla_put_failure:
11723 genlmsg_cancel(msg, hdr);
11724 return -EMSGSIZE;
11725 }
11726
11727 static int
11728 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11729 struct cfg80211_registered_device *rdev,
11730 struct net_device *netdev,
11731 u32 portid, u32 seq, int flags, u32 cmd)
11732 {
11733 void *hdr;
11734
11735 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11736 if (!hdr)
11737 return -1;
11738
11739 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11740 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11741 goto nla_put_failure;
11742
11743 genlmsg_end(msg, hdr);
11744 return 0;
11745
11746 nla_put_failure:
11747 genlmsg_cancel(msg, hdr);
11748 return -EMSGSIZE;
11749 }
11750
11751 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11752 struct wireless_dev *wdev)
11753 {
11754 struct sk_buff *msg;
11755
11756 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11757 if (!msg)
11758 return;
11759
11760 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11761 NL80211_CMD_TRIGGER_SCAN) < 0) {
11762 nlmsg_free(msg);
11763 return;
11764 }
11765
11766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11767 NL80211_MCGRP_SCAN, GFP_KERNEL);
11768 }
11769
11770 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11771 struct wireless_dev *wdev, bool aborted)
11772 {
11773 struct sk_buff *msg;
11774
11775 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11776 if (!msg)
11777 return NULL;
11778
11779 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11780 aborted ? NL80211_CMD_SCAN_ABORTED :
11781 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11782 nlmsg_free(msg);
11783 return NULL;
11784 }
11785
11786 return msg;
11787 }
11788
11789 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11790 struct sk_buff *msg)
11791 {
11792 if (!msg)
11793 return;
11794
11795 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11796 NL80211_MCGRP_SCAN, GFP_KERNEL);
11797 }
11798
11799 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11800 struct net_device *netdev)
11801 {
11802 struct sk_buff *msg;
11803
11804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11805 if (!msg)
11806 return;
11807
11808 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11809 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11810 nlmsg_free(msg);
11811 return;
11812 }
11813
11814 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11815 NL80211_MCGRP_SCAN, GFP_KERNEL);
11816 }
11817
11818 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11819 struct net_device *netdev, u32 cmd)
11820 {
11821 struct sk_buff *msg;
11822
11823 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11824 if (!msg)
11825 return;
11826
11827 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11828 nlmsg_free(msg);
11829 return;
11830 }
11831
11832 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11833 NL80211_MCGRP_SCAN, GFP_KERNEL);
11834 }
11835
11836 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11837 struct regulatory_request *request)
11838 {
11839 /* Userspace can always count this one always being set */
11840 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11841 goto nla_put_failure;
11842
11843 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11844 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11845 NL80211_REGDOM_TYPE_WORLD))
11846 goto nla_put_failure;
11847 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11848 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11849 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11850 goto nla_put_failure;
11851 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11852 request->intersect) {
11853 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11854 NL80211_REGDOM_TYPE_INTERSECTION))
11855 goto nla_put_failure;
11856 } else {
11857 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11858 NL80211_REGDOM_TYPE_COUNTRY) ||
11859 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11860 request->alpha2))
11861 goto nla_put_failure;
11862 }
11863
11864 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11865 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11866
11867 if (wiphy &&
11868 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11869 goto nla_put_failure;
11870
11871 if (wiphy &&
11872 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11873 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11874 goto nla_put_failure;
11875 }
11876
11877 return true;
11878
11879 nla_put_failure:
11880 return false;
11881 }
11882
11883 /*
11884 * This can happen on global regulatory changes or device specific settings
11885 * based on custom regulatory domains.
11886 */
11887 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11888 struct regulatory_request *request)
11889 {
11890 struct sk_buff *msg;
11891 void *hdr;
11892
11893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11894 if (!msg)
11895 return;
11896
11897 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11898 if (!hdr) {
11899 nlmsg_free(msg);
11900 return;
11901 }
11902
11903 if (nl80211_reg_change_event_fill(msg, request) == false)
11904 goto nla_put_failure;
11905
11906 genlmsg_end(msg, hdr);
11907
11908 rcu_read_lock();
11909 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11910 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11911 rcu_read_unlock();
11912
11913 return;
11914
11915 nla_put_failure:
11916 genlmsg_cancel(msg, hdr);
11917 nlmsg_free(msg);
11918 }
11919
11920 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11921 struct net_device *netdev,
11922 const u8 *buf, size_t len,
11923 enum nl80211_commands cmd, gfp_t gfp,
11924 int uapsd_queues)
11925 {
11926 struct sk_buff *msg;
11927 void *hdr;
11928
11929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11930 if (!msg)
11931 return;
11932
11933 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11934 if (!hdr) {
11935 nlmsg_free(msg);
11936 return;
11937 }
11938
11939 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11940 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11941 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11942 goto nla_put_failure;
11943
11944 if (uapsd_queues >= 0) {
11945 struct nlattr *nla_wmm =
11946 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11947 if (!nla_wmm)
11948 goto nla_put_failure;
11949
11950 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11951 uapsd_queues))
11952 goto nla_put_failure;
11953
11954 nla_nest_end(msg, nla_wmm);
11955 }
11956
11957 genlmsg_end(msg, hdr);
11958
11959 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11960 NL80211_MCGRP_MLME, gfp);
11961 return;
11962
11963 nla_put_failure:
11964 genlmsg_cancel(msg, hdr);
11965 nlmsg_free(msg);
11966 }
11967
11968 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11969 struct net_device *netdev, const u8 *buf,
11970 size_t len, gfp_t gfp)
11971 {
11972 nl80211_send_mlme_event(rdev, netdev, buf, len,
11973 NL80211_CMD_AUTHENTICATE, gfp, -1);
11974 }
11975
11976 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11977 struct net_device *netdev, const u8 *buf,
11978 size_t len, gfp_t gfp, int uapsd_queues)
11979 {
11980 nl80211_send_mlme_event(rdev, netdev, buf, len,
11981 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11982 }
11983
11984 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11985 struct net_device *netdev, const u8 *buf,
11986 size_t len, gfp_t gfp)
11987 {
11988 nl80211_send_mlme_event(rdev, netdev, buf, len,
11989 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11990 }
11991
11992 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11993 struct net_device *netdev, const u8 *buf,
11994 size_t len, gfp_t gfp)
11995 {
11996 nl80211_send_mlme_event(rdev, netdev, buf, len,
11997 NL80211_CMD_DISASSOCIATE, gfp, -1);
11998 }
11999
12000 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
12001 size_t len)
12002 {
12003 struct wireless_dev *wdev = dev->ieee80211_ptr;
12004 struct wiphy *wiphy = wdev->wiphy;
12005 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12006 const struct ieee80211_mgmt *mgmt = (void *)buf;
12007 u32 cmd;
12008
12009 if (WARN_ON(len < 2))
12010 return;
12011
12012 if (ieee80211_is_deauth(mgmt->frame_control))
12013 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
12014 else
12015 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
12016
12017 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
12018 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
12019 }
12020 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
12021
12022 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
12023 struct net_device *netdev, int cmd,
12024 const u8 *addr, gfp_t gfp)
12025 {
12026 struct sk_buff *msg;
12027 void *hdr;
12028
12029 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12030 if (!msg)
12031 return;
12032
12033 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12034 if (!hdr) {
12035 nlmsg_free(msg);
12036 return;
12037 }
12038
12039 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12040 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12041 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
12042 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12043 goto nla_put_failure;
12044
12045 genlmsg_end(msg, hdr);
12046
12047 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12048 NL80211_MCGRP_MLME, gfp);
12049 return;
12050
12051 nla_put_failure:
12052 genlmsg_cancel(msg, hdr);
12053 nlmsg_free(msg);
12054 }
12055
12056 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
12057 struct net_device *netdev, const u8 *addr,
12058 gfp_t gfp)
12059 {
12060 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
12061 addr, gfp);
12062 }
12063
12064 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
12065 struct net_device *netdev, const u8 *addr,
12066 gfp_t gfp)
12067 {
12068 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
12069 addr, gfp);
12070 }
12071
12072 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
12073 struct net_device *netdev, const u8 *bssid,
12074 const u8 *req_ie, size_t req_ie_len,
12075 const u8 *resp_ie, size_t resp_ie_len,
12076 u16 status, gfp_t gfp)
12077 {
12078 struct sk_buff *msg;
12079 void *hdr;
12080
12081 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12082 if (!msg)
12083 return;
12084
12085 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
12086 if (!hdr) {
12087 nlmsg_free(msg);
12088 return;
12089 }
12090
12091 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12092 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12093 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
12094 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
12095 (req_ie &&
12096 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12097 (resp_ie &&
12098 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12099 goto nla_put_failure;
12100
12101 genlmsg_end(msg, hdr);
12102
12103 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12104 NL80211_MCGRP_MLME, gfp);
12105 return;
12106
12107 nla_put_failure:
12108 genlmsg_cancel(msg, hdr);
12109 nlmsg_free(msg);
12110
12111 }
12112
12113 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
12114 struct net_device *netdev, const u8 *bssid,
12115 const u8 *req_ie, size_t req_ie_len,
12116 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
12117 {
12118 struct sk_buff *msg;
12119 void *hdr;
12120
12121 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12122 if (!msg)
12123 return;
12124
12125 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
12126 if (!hdr) {
12127 nlmsg_free(msg);
12128 return;
12129 }
12130
12131 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12132 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12133 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
12134 (req_ie &&
12135 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12136 (resp_ie &&
12137 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12138 goto nla_put_failure;
12139
12140 genlmsg_end(msg, hdr);
12141
12142 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12143 NL80211_MCGRP_MLME, gfp);
12144 return;
12145
12146 nla_put_failure:
12147 genlmsg_cancel(msg, hdr);
12148 nlmsg_free(msg);
12149
12150 }
12151
12152 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12153 struct net_device *netdev, u16 reason,
12154 const u8 *ie, size_t ie_len, bool from_ap)
12155 {
12156 struct sk_buff *msg;
12157 void *hdr;
12158
12159 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12160 if (!msg)
12161 return;
12162
12163 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12164 if (!hdr) {
12165 nlmsg_free(msg);
12166 return;
12167 }
12168
12169 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12170 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12171 (from_ap && reason &&
12172 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12173 (from_ap &&
12174 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12175 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12176 goto nla_put_failure;
12177
12178 genlmsg_end(msg, hdr);
12179
12180 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12181 NL80211_MCGRP_MLME, GFP_KERNEL);
12182 return;
12183
12184 nla_put_failure:
12185 genlmsg_cancel(msg, hdr);
12186 nlmsg_free(msg);
12187
12188 }
12189
12190 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12191 struct net_device *netdev, const u8 *bssid,
12192 gfp_t gfp)
12193 {
12194 struct sk_buff *msg;
12195 void *hdr;
12196
12197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12198 if (!msg)
12199 return;
12200
12201 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12202 if (!hdr) {
12203 nlmsg_free(msg);
12204 return;
12205 }
12206
12207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12208 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12209 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12210 goto nla_put_failure;
12211
12212 genlmsg_end(msg, hdr);
12213
12214 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12215 NL80211_MCGRP_MLME, gfp);
12216 return;
12217
12218 nla_put_failure:
12219 genlmsg_cancel(msg, hdr);
12220 nlmsg_free(msg);
12221 }
12222
12223 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12224 const u8* ie, u8 ie_len, gfp_t gfp)
12225 {
12226 struct wireless_dev *wdev = dev->ieee80211_ptr;
12227 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12228 struct sk_buff *msg;
12229 void *hdr;
12230
12231 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12232 return;
12233
12234 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12235
12236 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12237 if (!msg)
12238 return;
12239
12240 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12241 if (!hdr) {
12242 nlmsg_free(msg);
12243 return;
12244 }
12245
12246 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12247 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12248 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12249 (ie_len && ie &&
12250 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12251 goto nla_put_failure;
12252
12253 genlmsg_end(msg, hdr);
12254
12255 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12256 NL80211_MCGRP_MLME, gfp);
12257 return;
12258
12259 nla_put_failure:
12260 genlmsg_cancel(msg, hdr);
12261 nlmsg_free(msg);
12262 }
12263 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12264
12265 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12266 struct net_device *netdev, const u8 *addr,
12267 enum nl80211_key_type key_type, int key_id,
12268 const u8 *tsc, gfp_t gfp)
12269 {
12270 struct sk_buff *msg;
12271 void *hdr;
12272
12273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12274 if (!msg)
12275 return;
12276
12277 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12278 if (!hdr) {
12279 nlmsg_free(msg);
12280 return;
12281 }
12282
12283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12284 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12285 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12286 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12287 (key_id != -1 &&
12288 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12289 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12290 goto nla_put_failure;
12291
12292 genlmsg_end(msg, hdr);
12293
12294 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12295 NL80211_MCGRP_MLME, gfp);
12296 return;
12297
12298 nla_put_failure:
12299 genlmsg_cancel(msg, hdr);
12300 nlmsg_free(msg);
12301 }
12302
12303 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12304 struct ieee80211_channel *channel_before,
12305 struct ieee80211_channel *channel_after)
12306 {
12307 struct sk_buff *msg;
12308 void *hdr;
12309 struct nlattr *nl_freq;
12310
12311 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12312 if (!msg)
12313 return;
12314
12315 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12316 if (!hdr) {
12317 nlmsg_free(msg);
12318 return;
12319 }
12320
12321 /*
12322 * Since we are applying the beacon hint to a wiphy we know its
12323 * wiphy_idx is valid
12324 */
12325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12326 goto nla_put_failure;
12327
12328 /* Before */
12329 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12330 if (!nl_freq)
12331 goto nla_put_failure;
12332 if (nl80211_msg_put_channel(msg, channel_before, false))
12333 goto nla_put_failure;
12334 nla_nest_end(msg, nl_freq);
12335
12336 /* After */
12337 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12338 if (!nl_freq)
12339 goto nla_put_failure;
12340 if (nl80211_msg_put_channel(msg, channel_after, false))
12341 goto nla_put_failure;
12342 nla_nest_end(msg, nl_freq);
12343
12344 genlmsg_end(msg, hdr);
12345
12346 rcu_read_lock();
12347 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12348 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12349 rcu_read_unlock();
12350
12351 return;
12352
12353 nla_put_failure:
12354 genlmsg_cancel(msg, hdr);
12355 nlmsg_free(msg);
12356 }
12357
12358 static void nl80211_send_remain_on_chan_event(
12359 int cmd, struct cfg80211_registered_device *rdev,
12360 struct wireless_dev *wdev, u64 cookie,
12361 struct ieee80211_channel *chan,
12362 unsigned int duration, gfp_t gfp)
12363 {
12364 struct sk_buff *msg;
12365 void *hdr;
12366
12367 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12368 if (!msg)
12369 return;
12370
12371 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12372 if (!hdr) {
12373 nlmsg_free(msg);
12374 return;
12375 }
12376
12377 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12378 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12379 wdev->netdev->ifindex)) ||
12380 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12381 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12382 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12383 NL80211_CHAN_NO_HT) ||
12384 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
12385 goto nla_put_failure;
12386
12387 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12388 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12389 goto nla_put_failure;
12390
12391 genlmsg_end(msg, hdr);
12392
12393 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12394 NL80211_MCGRP_MLME, gfp);
12395 return;
12396
12397 nla_put_failure:
12398 genlmsg_cancel(msg, hdr);
12399 nlmsg_free(msg);
12400 }
12401
12402 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12403 struct ieee80211_channel *chan,
12404 unsigned int duration, gfp_t gfp)
12405 {
12406 struct wiphy *wiphy = wdev->wiphy;
12407 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12408
12409 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12410 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12411 rdev, wdev, cookie, chan,
12412 duration, gfp);
12413 }
12414 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12415
12416 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12417 struct ieee80211_channel *chan,
12418 gfp_t gfp)
12419 {
12420 struct wiphy *wiphy = wdev->wiphy;
12421 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12422
12423 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12424 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12425 rdev, wdev, cookie, chan, 0, gfp);
12426 }
12427 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12428
12429 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12430 struct station_info *sinfo, gfp_t gfp)
12431 {
12432 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12433 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12434 struct sk_buff *msg;
12435
12436 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12437
12438 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12439 if (!msg)
12440 return;
12441
12442 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12443 rdev, dev, mac_addr, sinfo) < 0) {
12444 nlmsg_free(msg);
12445 return;
12446 }
12447
12448 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12449 NL80211_MCGRP_MLME, gfp);
12450 }
12451 EXPORT_SYMBOL(cfg80211_new_sta);
12452
12453 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12454 struct station_info *sinfo, gfp_t gfp)
12455 {
12456 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12457 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12458 struct sk_buff *msg;
12459 struct station_info empty_sinfo = {};
12460
12461 if (!sinfo)
12462 sinfo = &empty_sinfo;
12463
12464 trace_cfg80211_del_sta(dev, mac_addr);
12465
12466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12467 if (!msg)
12468 return;
12469
12470 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12471 rdev, dev, mac_addr, sinfo) < 0) {
12472 nlmsg_free(msg);
12473 return;
12474 }
12475
12476 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12477 NL80211_MCGRP_MLME, gfp);
12478 }
12479 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12480
12481 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12482 enum nl80211_connect_failed_reason reason,
12483 gfp_t gfp)
12484 {
12485 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12486 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12487 struct sk_buff *msg;
12488 void *hdr;
12489
12490 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12491 if (!msg)
12492 return;
12493
12494 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12495 if (!hdr) {
12496 nlmsg_free(msg);
12497 return;
12498 }
12499
12500 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12501 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12502 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12503 goto nla_put_failure;
12504
12505 genlmsg_end(msg, hdr);
12506
12507 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12508 NL80211_MCGRP_MLME, gfp);
12509 return;
12510
12511 nla_put_failure:
12512 genlmsg_cancel(msg, hdr);
12513 nlmsg_free(msg);
12514 }
12515 EXPORT_SYMBOL(cfg80211_conn_failed);
12516
12517 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12518 const u8 *addr, gfp_t gfp)
12519 {
12520 struct wireless_dev *wdev = dev->ieee80211_ptr;
12521 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12522 struct sk_buff *msg;
12523 void *hdr;
12524 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12525
12526 if (!nlportid)
12527 return false;
12528
12529 msg = nlmsg_new(100, gfp);
12530 if (!msg)
12531 return true;
12532
12533 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12534 if (!hdr) {
12535 nlmsg_free(msg);
12536 return true;
12537 }
12538
12539 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12540 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12541 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12542 goto nla_put_failure;
12543
12544 genlmsg_end(msg, hdr);
12545 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12546 return true;
12547
12548 nla_put_failure:
12549 genlmsg_cancel(msg, hdr);
12550 nlmsg_free(msg);
12551 return true;
12552 }
12553
12554 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12555 const u8 *addr, gfp_t gfp)
12556 {
12557 struct wireless_dev *wdev = dev->ieee80211_ptr;
12558 bool ret;
12559
12560 trace_cfg80211_rx_spurious_frame(dev, addr);
12561
12562 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12563 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12564 trace_cfg80211_return_bool(false);
12565 return false;
12566 }
12567 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12568 addr, gfp);
12569 trace_cfg80211_return_bool(ret);
12570 return ret;
12571 }
12572 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12573
12574 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12575 const u8 *addr, gfp_t gfp)
12576 {
12577 struct wireless_dev *wdev = dev->ieee80211_ptr;
12578 bool ret;
12579
12580 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12581
12582 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12583 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12584 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12585 trace_cfg80211_return_bool(false);
12586 return false;
12587 }
12588 ret = __nl80211_unexpected_frame(dev,
12589 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12590 addr, gfp);
12591 trace_cfg80211_return_bool(ret);
12592 return ret;
12593 }
12594 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12595
12596 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12597 struct wireless_dev *wdev, u32 nlportid,
12598 int freq, int sig_dbm,
12599 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12600 {
12601 struct net_device *netdev = wdev->netdev;
12602 struct sk_buff *msg;
12603 void *hdr;
12604
12605 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12606 if (!msg)
12607 return -ENOMEM;
12608
12609 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12610 if (!hdr) {
12611 nlmsg_free(msg);
12612 return -ENOMEM;
12613 }
12614
12615 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12616 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12617 netdev->ifindex)) ||
12618 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12619 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12620 (sig_dbm &&
12621 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12622 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12623 (flags &&
12624 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12625 goto nla_put_failure;
12626
12627 genlmsg_end(msg, hdr);
12628
12629 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12630
12631 nla_put_failure:
12632 genlmsg_cancel(msg, hdr);
12633 nlmsg_free(msg);
12634 return -ENOBUFS;
12635 }
12636
12637 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12638 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12639 {
12640 struct wiphy *wiphy = wdev->wiphy;
12641 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12642 struct net_device *netdev = wdev->netdev;
12643 struct sk_buff *msg;
12644 void *hdr;
12645
12646 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12647
12648 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12649 if (!msg)
12650 return;
12651
12652 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12653 if (!hdr) {
12654 nlmsg_free(msg);
12655 return;
12656 }
12657
12658 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12659 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12660 netdev->ifindex)) ||
12661 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12662 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12663 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12664 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12665 goto nla_put_failure;
12666
12667 genlmsg_end(msg, hdr);
12668
12669 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12670 NL80211_MCGRP_MLME, gfp);
12671 return;
12672
12673 nla_put_failure:
12674 genlmsg_cancel(msg, hdr);
12675 nlmsg_free(msg);
12676 }
12677 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12678
12679 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12680 const char *mac, gfp_t gfp)
12681 {
12682 struct wireless_dev *wdev = dev->ieee80211_ptr;
12683 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12684 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12685 void **cb;
12686
12687 if (!msg)
12688 return NULL;
12689
12690 cb = (void **)msg->cb;
12691
12692 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12693 if (!cb[0]) {
12694 nlmsg_free(msg);
12695 return NULL;
12696 }
12697
12698 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12699 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12700 goto nla_put_failure;
12701
12702 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12703 goto nla_put_failure;
12704
12705 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12706 if (!cb[1])
12707 goto nla_put_failure;
12708
12709 cb[2] = rdev;
12710
12711 return msg;
12712 nla_put_failure:
12713 nlmsg_free(msg);
12714 return NULL;
12715 }
12716
12717 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12718 {
12719 void **cb = (void **)msg->cb;
12720 struct cfg80211_registered_device *rdev = cb[2];
12721
12722 nla_nest_end(msg, cb[1]);
12723 genlmsg_end(msg, cb[0]);
12724
12725 memset(msg->cb, 0, sizeof(msg->cb));
12726
12727 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12728 NL80211_MCGRP_MLME, gfp);
12729 }
12730
12731 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12732 enum nl80211_cqm_rssi_threshold_event rssi_event,
12733 gfp_t gfp)
12734 {
12735 struct sk_buff *msg;
12736
12737 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12738
12739 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12740 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12741 return;
12742
12743 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12744 if (!msg)
12745 return;
12746
12747 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12748 rssi_event))
12749 goto nla_put_failure;
12750
12751 cfg80211_send_cqm(msg, gfp);
12752
12753 return;
12754
12755 nla_put_failure:
12756 nlmsg_free(msg);
12757 }
12758 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12759
12760 void cfg80211_cqm_txe_notify(struct net_device *dev,
12761 const u8 *peer, u32 num_packets,
12762 u32 rate, u32 intvl, gfp_t gfp)
12763 {
12764 struct sk_buff *msg;
12765
12766 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12767 if (!msg)
12768 return;
12769
12770 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12771 goto nla_put_failure;
12772
12773 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12774 goto nla_put_failure;
12775
12776 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12777 goto nla_put_failure;
12778
12779 cfg80211_send_cqm(msg, gfp);
12780 return;
12781
12782 nla_put_failure:
12783 nlmsg_free(msg);
12784 }
12785 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12786
12787 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12788 const u8 *peer, u32 num_packets, gfp_t gfp)
12789 {
12790 struct sk_buff *msg;
12791
12792 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12793
12794 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12795 if (!msg)
12796 return;
12797
12798 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12799 goto nla_put_failure;
12800
12801 cfg80211_send_cqm(msg, gfp);
12802 return;
12803
12804 nla_put_failure:
12805 nlmsg_free(msg);
12806 }
12807 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12808
12809 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12810 {
12811 struct sk_buff *msg;
12812
12813 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12814 if (!msg)
12815 return;
12816
12817 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12818 goto nla_put_failure;
12819
12820 cfg80211_send_cqm(msg, gfp);
12821 return;
12822
12823 nla_put_failure:
12824 nlmsg_free(msg);
12825 }
12826 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12827
12828 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12829 struct net_device *netdev, const u8 *bssid,
12830 const u8 *replay_ctr, gfp_t gfp)
12831 {
12832 struct sk_buff *msg;
12833 struct nlattr *rekey_attr;
12834 void *hdr;
12835
12836 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12837 if (!msg)
12838 return;
12839
12840 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12841 if (!hdr) {
12842 nlmsg_free(msg);
12843 return;
12844 }
12845
12846 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12847 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12848 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12849 goto nla_put_failure;
12850
12851 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12852 if (!rekey_attr)
12853 goto nla_put_failure;
12854
12855 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12856 NL80211_REPLAY_CTR_LEN, replay_ctr))
12857 goto nla_put_failure;
12858
12859 nla_nest_end(msg, rekey_attr);
12860
12861 genlmsg_end(msg, hdr);
12862
12863 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12864 NL80211_MCGRP_MLME, gfp);
12865 return;
12866
12867 nla_put_failure:
12868 genlmsg_cancel(msg, hdr);
12869 nlmsg_free(msg);
12870 }
12871
12872 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12873 const u8 *replay_ctr, gfp_t gfp)
12874 {
12875 struct wireless_dev *wdev = dev->ieee80211_ptr;
12876 struct wiphy *wiphy = wdev->wiphy;
12877 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12878
12879 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12880 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12881 }
12882 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12883
12884 static void
12885 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12886 struct net_device *netdev, int index,
12887 const u8 *bssid, bool preauth, gfp_t gfp)
12888 {
12889 struct sk_buff *msg;
12890 struct nlattr *attr;
12891 void *hdr;
12892
12893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12894 if (!msg)
12895 return;
12896
12897 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12898 if (!hdr) {
12899 nlmsg_free(msg);
12900 return;
12901 }
12902
12903 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12904 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12905 goto nla_put_failure;
12906
12907 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12908 if (!attr)
12909 goto nla_put_failure;
12910
12911 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12912 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12913 (preauth &&
12914 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12915 goto nla_put_failure;
12916
12917 nla_nest_end(msg, attr);
12918
12919 genlmsg_end(msg, hdr);
12920
12921 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12922 NL80211_MCGRP_MLME, gfp);
12923 return;
12924
12925 nla_put_failure:
12926 genlmsg_cancel(msg, hdr);
12927 nlmsg_free(msg);
12928 }
12929
12930 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12931 const u8 *bssid, bool preauth, gfp_t gfp)
12932 {
12933 struct wireless_dev *wdev = dev->ieee80211_ptr;
12934 struct wiphy *wiphy = wdev->wiphy;
12935 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12936
12937 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12938 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12939 }
12940 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12941
12942 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12943 struct net_device *netdev,
12944 struct cfg80211_chan_def *chandef,
12945 gfp_t gfp,
12946 enum nl80211_commands notif,
12947 u8 count)
12948 {
12949 struct sk_buff *msg;
12950 void *hdr;
12951
12952 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12953 if (!msg)
12954 return;
12955
12956 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12957 if (!hdr) {
12958 nlmsg_free(msg);
12959 return;
12960 }
12961
12962 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12963 goto nla_put_failure;
12964
12965 if (nl80211_send_chandef(msg, chandef))
12966 goto nla_put_failure;
12967
12968 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12969 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12970 goto nla_put_failure;
12971
12972 genlmsg_end(msg, hdr);
12973
12974 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12975 NL80211_MCGRP_MLME, gfp);
12976 return;
12977
12978 nla_put_failure:
12979 genlmsg_cancel(msg, hdr);
12980 nlmsg_free(msg);
12981 }
12982
12983 void cfg80211_ch_switch_notify(struct net_device *dev,
12984 struct cfg80211_chan_def *chandef)
12985 {
12986 struct wireless_dev *wdev = dev->ieee80211_ptr;
12987 struct wiphy *wiphy = wdev->wiphy;
12988 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12989
12990 ASSERT_WDEV_LOCK(wdev);
12991
12992 trace_cfg80211_ch_switch_notify(dev, chandef);
12993
12994 wdev->chandef = *chandef;
12995 wdev->preset_chandef = *chandef;
12996 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12997 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12998 }
12999 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
13000
13001 void cfg80211_ch_switch_started_notify(struct net_device *dev,
13002 struct cfg80211_chan_def *chandef,
13003 u8 count)
13004 {
13005 struct wireless_dev *wdev = dev->ieee80211_ptr;
13006 struct wiphy *wiphy = wdev->wiphy;
13007 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13008
13009 trace_cfg80211_ch_switch_started_notify(dev, chandef);
13010
13011 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13012 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
13013 }
13014 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
13015
13016 void
13017 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
13018 const struct cfg80211_chan_def *chandef,
13019 enum nl80211_radar_event event,
13020 struct net_device *netdev, gfp_t gfp)
13021 {
13022 struct sk_buff *msg;
13023 void *hdr;
13024
13025 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13026 if (!msg)
13027 return;
13028
13029 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
13030 if (!hdr) {
13031 nlmsg_free(msg);
13032 return;
13033 }
13034
13035 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
13036 goto nla_put_failure;
13037
13038 /* NOP and radar events don't need a netdev parameter */
13039 if (netdev) {
13040 struct wireless_dev *wdev = netdev->ieee80211_ptr;
13041
13042 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13043 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13044 goto nla_put_failure;
13045 }
13046
13047 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
13048 goto nla_put_failure;
13049
13050 if (nl80211_send_chandef(msg, chandef))
13051 goto nla_put_failure;
13052
13053 genlmsg_end(msg, hdr);
13054
13055 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13056 NL80211_MCGRP_MLME, gfp);
13057 return;
13058
13059 nla_put_failure:
13060 genlmsg_cancel(msg, hdr);
13061 nlmsg_free(msg);
13062 }
13063
13064 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
13065 u64 cookie, bool acked, gfp_t gfp)
13066 {
13067 struct wireless_dev *wdev = dev->ieee80211_ptr;
13068 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13069 struct sk_buff *msg;
13070 void *hdr;
13071
13072 trace_cfg80211_probe_status(dev, addr, cookie, acked);
13073
13074 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13075
13076 if (!msg)
13077 return;
13078
13079 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
13080 if (!hdr) {
13081 nlmsg_free(msg);
13082 return;
13083 }
13084
13085 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13086 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13087 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13088 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
13089 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
13090 goto nla_put_failure;
13091
13092 genlmsg_end(msg, hdr);
13093
13094 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13095 NL80211_MCGRP_MLME, gfp);
13096 return;
13097
13098 nla_put_failure:
13099 genlmsg_cancel(msg, hdr);
13100 nlmsg_free(msg);
13101 }
13102 EXPORT_SYMBOL(cfg80211_probe_status);
13103
13104 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
13105 const u8 *frame, size_t len,
13106 int freq, int sig_dbm)
13107 {
13108 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13109 struct sk_buff *msg;
13110 void *hdr;
13111 struct cfg80211_beacon_registration *reg;
13112
13113 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
13114
13115 spin_lock_bh(&rdev->beacon_registrations_lock);
13116 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13117 msg = nlmsg_new(len + 100, GFP_ATOMIC);
13118 if (!msg) {
13119 spin_unlock_bh(&rdev->beacon_registrations_lock);
13120 return;
13121 }
13122
13123 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13124 if (!hdr)
13125 goto nla_put_failure;
13126
13127 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13128 (freq &&
13129 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
13130 (sig_dbm &&
13131 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13132 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
13133 goto nla_put_failure;
13134
13135 genlmsg_end(msg, hdr);
13136
13137 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
13138 }
13139 spin_unlock_bh(&rdev->beacon_registrations_lock);
13140 return;
13141
13142 nla_put_failure:
13143 spin_unlock_bh(&rdev->beacon_registrations_lock);
13144 if (hdr)
13145 genlmsg_cancel(msg, hdr);
13146 nlmsg_free(msg);
13147 }
13148 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13149
13150 #ifdef CONFIG_PM
13151 static int cfg80211_net_detect_results(struct sk_buff *msg,
13152 struct cfg80211_wowlan_wakeup *wakeup)
13153 {
13154 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13155 struct nlattr *nl_results, *nl_match, *nl_freqs;
13156 int i, j;
13157
13158 nl_results = nla_nest_start(
13159 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13160 if (!nl_results)
13161 return -EMSGSIZE;
13162
13163 for (i = 0; i < nd->n_matches; i++) {
13164 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13165
13166 nl_match = nla_nest_start(msg, i);
13167 if (!nl_match)
13168 break;
13169
13170 /* The SSID attribute is optional in nl80211, but for
13171 * simplicity reasons it's always present in the
13172 * cfg80211 structure. If a driver can't pass the
13173 * SSID, that needs to be changed. A zero length SSID
13174 * is still a valid SSID (wildcard), so it cannot be
13175 * used for this purpose.
13176 */
13177 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13178 match->ssid.ssid)) {
13179 nla_nest_cancel(msg, nl_match);
13180 goto out;
13181 }
13182
13183 if (match->n_channels) {
13184 nl_freqs = nla_nest_start(
13185 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13186 if (!nl_freqs) {
13187 nla_nest_cancel(msg, nl_match);
13188 goto out;
13189 }
13190
13191 for (j = 0; j < match->n_channels; j++) {
13192 if (nla_put_u32(msg, j, match->channels[j])) {
13193 nla_nest_cancel(msg, nl_freqs);
13194 nla_nest_cancel(msg, nl_match);
13195 goto out;
13196 }
13197 }
13198
13199 nla_nest_end(msg, nl_freqs);
13200 }
13201
13202 nla_nest_end(msg, nl_match);
13203 }
13204
13205 out:
13206 nla_nest_end(msg, nl_results);
13207 return 0;
13208 }
13209
13210 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13211 struct cfg80211_wowlan_wakeup *wakeup,
13212 gfp_t gfp)
13213 {
13214 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13215 struct sk_buff *msg;
13216 void *hdr;
13217 int size = 200;
13218
13219 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13220
13221 if (wakeup)
13222 size += wakeup->packet_present_len;
13223
13224 msg = nlmsg_new(size, gfp);
13225 if (!msg)
13226 return;
13227
13228 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13229 if (!hdr)
13230 goto free_msg;
13231
13232 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13233 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13234 goto free_msg;
13235
13236 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13237 wdev->netdev->ifindex))
13238 goto free_msg;
13239
13240 if (wakeup) {
13241 struct nlattr *reasons;
13242
13243 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13244 if (!reasons)
13245 goto free_msg;
13246
13247 if (wakeup->disconnect &&
13248 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13249 goto free_msg;
13250 if (wakeup->magic_pkt &&
13251 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13252 goto free_msg;
13253 if (wakeup->gtk_rekey_failure &&
13254 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13255 goto free_msg;
13256 if (wakeup->eap_identity_req &&
13257 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13258 goto free_msg;
13259 if (wakeup->four_way_handshake &&
13260 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13261 goto free_msg;
13262 if (wakeup->rfkill_release &&
13263 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13264 goto free_msg;
13265
13266 if (wakeup->pattern_idx >= 0 &&
13267 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13268 wakeup->pattern_idx))
13269 goto free_msg;
13270
13271 if (wakeup->tcp_match &&
13272 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13273 goto free_msg;
13274
13275 if (wakeup->tcp_connlost &&
13276 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13277 goto free_msg;
13278
13279 if (wakeup->tcp_nomoretokens &&
13280 nla_put_flag(msg,
13281 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13282 goto free_msg;
13283
13284 if (wakeup->packet) {
13285 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13286 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13287
13288 if (!wakeup->packet_80211) {
13289 pkt_attr =
13290 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13291 len_attr =
13292 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13293 }
13294
13295 if (wakeup->packet_len &&
13296 nla_put_u32(msg, len_attr, wakeup->packet_len))
13297 goto free_msg;
13298
13299 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13300 wakeup->packet))
13301 goto free_msg;
13302 }
13303
13304 if (wakeup->net_detect &&
13305 cfg80211_net_detect_results(msg, wakeup))
13306 goto free_msg;
13307
13308 nla_nest_end(msg, reasons);
13309 }
13310
13311 genlmsg_end(msg, hdr);
13312
13313 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13314 NL80211_MCGRP_MLME, gfp);
13315 return;
13316
13317 free_msg:
13318 nlmsg_free(msg);
13319 }
13320 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13321 #endif
13322
13323 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13324 enum nl80211_tdls_operation oper,
13325 u16 reason_code, gfp_t gfp)
13326 {
13327 struct wireless_dev *wdev = dev->ieee80211_ptr;
13328 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13329 struct sk_buff *msg;
13330 void *hdr;
13331
13332 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13333 reason_code);
13334
13335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13336 if (!msg)
13337 return;
13338
13339 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13340 if (!hdr) {
13341 nlmsg_free(msg);
13342 return;
13343 }
13344
13345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13346 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13347 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13348 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13349 (reason_code > 0 &&
13350 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13351 goto nla_put_failure;
13352
13353 genlmsg_end(msg, hdr);
13354
13355 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13356 NL80211_MCGRP_MLME, gfp);
13357 return;
13358
13359 nla_put_failure:
13360 genlmsg_cancel(msg, hdr);
13361 nlmsg_free(msg);
13362 }
13363 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13364
13365 static int nl80211_netlink_notify(struct notifier_block * nb,
13366 unsigned long state,
13367 void *_notify)
13368 {
13369 struct netlink_notify *notify = _notify;
13370 struct cfg80211_registered_device *rdev;
13371 struct wireless_dev *wdev;
13372 struct cfg80211_beacon_registration *reg, *tmp;
13373
13374 if (state != NETLINK_URELEASE)
13375 return NOTIFY_DONE;
13376
13377 rcu_read_lock();
13378
13379 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13380 bool schedule_destroy_work = false;
13381 bool schedule_scan_stop = false;
13382 struct cfg80211_sched_scan_request *sched_scan_req =
13383 rcu_dereference(rdev->sched_scan_req);
13384
13385 if (sched_scan_req && notify->portid &&
13386 sched_scan_req->owner_nlportid == notify->portid)
13387 schedule_scan_stop = true;
13388
13389 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
13390 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13391
13392 if (wdev->owner_nlportid == notify->portid)
13393 schedule_destroy_work = true;
13394 }
13395
13396 spin_lock_bh(&rdev->beacon_registrations_lock);
13397 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13398 list) {
13399 if (reg->nlportid == notify->portid) {
13400 list_del(&reg->list);
13401 kfree(reg);
13402 break;
13403 }
13404 }
13405 spin_unlock_bh(&rdev->beacon_registrations_lock);
13406
13407 if (schedule_destroy_work) {
13408 struct cfg80211_iface_destroy *destroy;
13409
13410 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13411 if (destroy) {
13412 destroy->nlportid = notify->portid;
13413 spin_lock(&rdev->destroy_list_lock);
13414 list_add(&destroy->list, &rdev->destroy_list);
13415 spin_unlock(&rdev->destroy_list_lock);
13416 schedule_work(&rdev->destroy_work);
13417 }
13418 } else if (schedule_scan_stop) {
13419 sched_scan_req->owner_nlportid = 0;
13420
13421 if (rdev->ops->sched_scan_stop &&
13422 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13423 schedule_work(&rdev->sched_scan_stop_wk);
13424 }
13425 }
13426
13427 rcu_read_unlock();
13428
13429 /*
13430 * It is possible that the user space process that is controlling the
13431 * indoor setting disappeared, so notify the regulatory core.
13432 */
13433 regulatory_netlink_notify(notify->portid);
13434 return NOTIFY_OK;
13435 }
13436
13437 static struct notifier_block nl80211_netlink_notifier = {
13438 .notifier_call = nl80211_netlink_notify,
13439 };
13440
13441 void cfg80211_ft_event(struct net_device *netdev,
13442 struct cfg80211_ft_event_params *ft_event)
13443 {
13444 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13445 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13446 struct sk_buff *msg;
13447 void *hdr;
13448
13449 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13450
13451 if (!ft_event->target_ap)
13452 return;
13453
13454 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13455 if (!msg)
13456 return;
13457
13458 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13459 if (!hdr)
13460 goto out;
13461
13462 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13463 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13464 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13465 goto out;
13466
13467 if (ft_event->ies &&
13468 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13469 goto out;
13470 if (ft_event->ric_ies &&
13471 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13472 ft_event->ric_ies))
13473 goto out;
13474
13475 genlmsg_end(msg, hdr);
13476
13477 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13478 NL80211_MCGRP_MLME, GFP_KERNEL);
13479 return;
13480 out:
13481 nlmsg_free(msg);
13482 }
13483 EXPORT_SYMBOL(cfg80211_ft_event);
13484
13485 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13486 {
13487 struct cfg80211_registered_device *rdev;
13488 struct sk_buff *msg;
13489 void *hdr;
13490 u32 nlportid;
13491
13492 rdev = wiphy_to_rdev(wdev->wiphy);
13493 if (!rdev->crit_proto_nlportid)
13494 return;
13495
13496 nlportid = rdev->crit_proto_nlportid;
13497 rdev->crit_proto_nlportid = 0;
13498
13499 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13500 if (!msg)
13501 return;
13502
13503 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13504 if (!hdr)
13505 goto nla_put_failure;
13506
13507 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13508 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13509 goto nla_put_failure;
13510
13511 genlmsg_end(msg, hdr);
13512
13513 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13514 return;
13515
13516 nla_put_failure:
13517 if (hdr)
13518 genlmsg_cancel(msg, hdr);
13519 nlmsg_free(msg);
13520
13521 }
13522 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13523
13524 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13525 {
13526 struct wiphy *wiphy = wdev->wiphy;
13527 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13528 struct sk_buff *msg;
13529 void *hdr;
13530
13531 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13532 if (!msg)
13533 return;
13534
13535 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13536 if (!hdr)
13537 goto out;
13538
13539 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13540 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13541 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13542 goto out;
13543
13544 genlmsg_end(msg, hdr);
13545
13546 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13547 NL80211_MCGRP_MLME, GFP_KERNEL);
13548 return;
13549 out:
13550 nlmsg_free(msg);
13551 }
13552
13553 /* initialisation/exit functions */
13554
13555 int nl80211_init(void)
13556 {
13557 int err;
13558
13559 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13560 nl80211_mcgrps);
13561 if (err)
13562 return err;
13563
13564 err = netlink_register_notifier(&nl80211_netlink_notifier);
13565 if (err)
13566 goto err_out;
13567
13568 return 0;
13569 err_out:
13570 genl_unregister_family(&nl80211_fam);
13571 return err;
13572 }
13573
13574 void nl80211_exit(void)
13575 {
13576 netlink_unregister_notifier(&nl80211_netlink_notifier);
13577 genl_unregister_family(&nl80211_fam);
13578 }
Linux kernel - Deliverables
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