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Merge tag 'nfc-next-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo...
[mirror_ubuntu-hirsute-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * 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 nl80211_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 < NUM_NL80211_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 < NUM_NL80211_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_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2433 NL80211_ATTR_PAD) ||
2434 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2435 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2436 rdev->devlist_generation ^
2437 (cfg80211_rdev_list_generation << 2)))
2438 goto nla_put_failure;
2439
2440 if (rdev->ops->get_channel) {
2441 int ret;
2442 struct cfg80211_chan_def chandef;
2443
2444 ret = rdev_get_channel(rdev, wdev, &chandef);
2445 if (ret == 0) {
2446 if (nl80211_send_chandef(msg, &chandef))
2447 goto nla_put_failure;
2448 }
2449 }
2450
2451 if (rdev->ops->get_tx_power) {
2452 int dbm, ret;
2453
2454 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2455 if (ret == 0 &&
2456 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2457 DBM_TO_MBM(dbm)))
2458 goto nla_put_failure;
2459 }
2460
2461 if (wdev->ssid_len) {
2462 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2463 goto nla_put_failure;
2464 }
2465
2466 genlmsg_end(msg, hdr);
2467 return 0;
2468
2469 nla_put_failure:
2470 genlmsg_cancel(msg, hdr);
2471 return -EMSGSIZE;
2472 }
2473
2474 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2475 {
2476 int wp_idx = 0;
2477 int if_idx = 0;
2478 int wp_start = cb->args[0];
2479 int if_start = cb->args[1];
2480 struct cfg80211_registered_device *rdev;
2481 struct wireless_dev *wdev;
2482
2483 rtnl_lock();
2484 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2485 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2486 continue;
2487 if (wp_idx < wp_start) {
2488 wp_idx++;
2489 continue;
2490 }
2491 if_idx = 0;
2492
2493 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2494 if (if_idx < if_start) {
2495 if_idx++;
2496 continue;
2497 }
2498 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2499 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2500 rdev, wdev, false) < 0) {
2501 goto out;
2502 }
2503 if_idx++;
2504 }
2505
2506 wp_idx++;
2507 }
2508 out:
2509 rtnl_unlock();
2510
2511 cb->args[0] = wp_idx;
2512 cb->args[1] = if_idx;
2513
2514 return skb->len;
2515 }
2516
2517 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2518 {
2519 struct sk_buff *msg;
2520 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2521 struct wireless_dev *wdev = info->user_ptr[1];
2522
2523 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2524 if (!msg)
2525 return -ENOMEM;
2526
2527 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2528 rdev, wdev, false) < 0) {
2529 nlmsg_free(msg);
2530 return -ENOBUFS;
2531 }
2532
2533 return genlmsg_reply(msg, info);
2534 }
2535
2536 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2537 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2538 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2539 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2540 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2541 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2542 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2543 };
2544
2545 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2546 {
2547 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2548 int flag;
2549
2550 *mntrflags = 0;
2551
2552 if (!nla)
2553 return -EINVAL;
2554
2555 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2556 nla, mntr_flags_policy))
2557 return -EINVAL;
2558
2559 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2560 if (flags[flag])
2561 *mntrflags |= (1<<flag);
2562
2563 return 0;
2564 }
2565
2566 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2567 struct net_device *netdev, u8 use_4addr,
2568 enum nl80211_iftype iftype)
2569 {
2570 if (!use_4addr) {
2571 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2572 return -EBUSY;
2573 return 0;
2574 }
2575
2576 switch (iftype) {
2577 case NL80211_IFTYPE_AP_VLAN:
2578 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2579 return 0;
2580 break;
2581 case NL80211_IFTYPE_STATION:
2582 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2583 return 0;
2584 break;
2585 default:
2586 break;
2587 }
2588
2589 return -EOPNOTSUPP;
2590 }
2591
2592 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2593 {
2594 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2595 struct vif_params params;
2596 int err;
2597 enum nl80211_iftype otype, ntype;
2598 struct net_device *dev = info->user_ptr[1];
2599 u32 _flags, *flags = NULL;
2600 bool change = false;
2601
2602 memset(&params, 0, sizeof(params));
2603
2604 otype = ntype = dev->ieee80211_ptr->iftype;
2605
2606 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2607 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2608 if (otype != ntype)
2609 change = true;
2610 if (ntype > NL80211_IFTYPE_MAX)
2611 return -EINVAL;
2612 }
2613
2614 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2615 struct wireless_dev *wdev = dev->ieee80211_ptr;
2616
2617 if (ntype != NL80211_IFTYPE_MESH_POINT)
2618 return -EINVAL;
2619 if (netif_running(dev))
2620 return -EBUSY;
2621
2622 wdev_lock(wdev);
2623 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2624 IEEE80211_MAX_MESH_ID_LEN);
2625 wdev->mesh_id_up_len =
2626 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2627 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2628 wdev->mesh_id_up_len);
2629 wdev_unlock(wdev);
2630 }
2631
2632 if (info->attrs[NL80211_ATTR_4ADDR]) {
2633 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2634 change = true;
2635 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2636 if (err)
2637 return err;
2638 } else {
2639 params.use_4addr = -1;
2640 }
2641
2642 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2643 if (ntype != NL80211_IFTYPE_MONITOR)
2644 return -EINVAL;
2645 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2646 &_flags);
2647 if (err)
2648 return err;
2649
2650 flags = &_flags;
2651 change = true;
2652 }
2653
2654 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2655 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2656 return -EOPNOTSUPP;
2657
2658 if (change)
2659 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2660 else
2661 err = 0;
2662
2663 if (!err && params.use_4addr != -1)
2664 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2665
2666 return err;
2667 }
2668
2669 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2670 {
2671 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2672 struct vif_params params;
2673 struct wireless_dev *wdev;
2674 struct sk_buff *msg, *event;
2675 int err;
2676 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2677 u32 flags;
2678
2679 /* to avoid failing a new interface creation due to pending removal */
2680 cfg80211_destroy_ifaces(rdev);
2681
2682 memset(&params, 0, sizeof(params));
2683
2684 if (!info->attrs[NL80211_ATTR_IFNAME])
2685 return -EINVAL;
2686
2687 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2688 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2689 if (type > NL80211_IFTYPE_MAX)
2690 return -EINVAL;
2691 }
2692
2693 if (!rdev->ops->add_virtual_intf ||
2694 !(rdev->wiphy.interface_modes & (1 << type)))
2695 return -EOPNOTSUPP;
2696
2697 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2698 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2699 info->attrs[NL80211_ATTR_MAC]) {
2700 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2701 ETH_ALEN);
2702 if (!is_valid_ether_addr(params.macaddr))
2703 return -EADDRNOTAVAIL;
2704 }
2705
2706 if (info->attrs[NL80211_ATTR_4ADDR]) {
2707 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2708 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2709 if (err)
2710 return err;
2711 }
2712
2713 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2714 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2715 &flags);
2716
2717 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2718 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2719 return -EOPNOTSUPP;
2720
2721 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2722 if (!msg)
2723 return -ENOMEM;
2724
2725 wdev = rdev_add_virtual_intf(rdev,
2726 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2727 NET_NAME_USER, type, err ? NULL : &flags,
2728 &params);
2729 if (WARN_ON(!wdev)) {
2730 nlmsg_free(msg);
2731 return -EPROTO;
2732 } else if (IS_ERR(wdev)) {
2733 nlmsg_free(msg);
2734 return PTR_ERR(wdev);
2735 }
2736
2737 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2738 wdev->owner_nlportid = info->snd_portid;
2739
2740 switch (type) {
2741 case NL80211_IFTYPE_MESH_POINT:
2742 if (!info->attrs[NL80211_ATTR_MESH_ID])
2743 break;
2744 wdev_lock(wdev);
2745 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2746 IEEE80211_MAX_MESH_ID_LEN);
2747 wdev->mesh_id_up_len =
2748 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2749 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2750 wdev->mesh_id_up_len);
2751 wdev_unlock(wdev);
2752 break;
2753 case NL80211_IFTYPE_P2P_DEVICE:
2754 /*
2755 * P2P Device doesn't have a netdev, so doesn't go
2756 * through the netdev notifier and must be added here
2757 */
2758 mutex_init(&wdev->mtx);
2759 INIT_LIST_HEAD(&wdev->event_list);
2760 spin_lock_init(&wdev->event_lock);
2761 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2762 spin_lock_init(&wdev->mgmt_registrations_lock);
2763
2764 wdev->identifier = ++rdev->wdev_id;
2765 list_add_rcu(&wdev->list, &rdev->wdev_list);
2766 rdev->devlist_generation++;
2767 break;
2768 default:
2769 break;
2770 }
2771
2772 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2773 rdev, wdev, false) < 0) {
2774 nlmsg_free(msg);
2775 return -ENOBUFS;
2776 }
2777
2778 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2779 if (event) {
2780 if (nl80211_send_iface(event, 0, 0, 0,
2781 rdev, wdev, false) < 0) {
2782 nlmsg_free(event);
2783 goto out;
2784 }
2785
2786 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2787 event, 0, NL80211_MCGRP_CONFIG,
2788 GFP_KERNEL);
2789 }
2790
2791 out:
2792 return genlmsg_reply(msg, info);
2793 }
2794
2795 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2796 {
2797 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2798 struct wireless_dev *wdev = info->user_ptr[1];
2799 struct sk_buff *msg;
2800 int status;
2801
2802 if (!rdev->ops->del_virtual_intf)
2803 return -EOPNOTSUPP;
2804
2805 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2806 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2807 nlmsg_free(msg);
2808 msg = NULL;
2809 }
2810
2811 /*
2812 * If we remove a wireless device without a netdev then clear
2813 * user_ptr[1] so that nl80211_post_doit won't dereference it
2814 * to check if it needs to do dev_put(). Otherwise it crashes
2815 * since the wdev has been freed, unlike with a netdev where
2816 * we need the dev_put() for the netdev to really be freed.
2817 */
2818 if (!wdev->netdev)
2819 info->user_ptr[1] = NULL;
2820
2821 status = rdev_del_virtual_intf(rdev, wdev);
2822 if (status >= 0 && msg)
2823 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2824 msg, 0, NL80211_MCGRP_CONFIG,
2825 GFP_KERNEL);
2826 else
2827 nlmsg_free(msg);
2828
2829 return status;
2830 }
2831
2832 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2833 {
2834 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2835 struct net_device *dev = info->user_ptr[1];
2836 u16 noack_map;
2837
2838 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2839 return -EINVAL;
2840
2841 if (!rdev->ops->set_noack_map)
2842 return -EOPNOTSUPP;
2843
2844 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2845
2846 return rdev_set_noack_map(rdev, dev, noack_map);
2847 }
2848
2849 struct get_key_cookie {
2850 struct sk_buff *msg;
2851 int error;
2852 int idx;
2853 };
2854
2855 static void get_key_callback(void *c, struct key_params *params)
2856 {
2857 struct nlattr *key;
2858 struct get_key_cookie *cookie = c;
2859
2860 if ((params->key &&
2861 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2862 params->key_len, params->key)) ||
2863 (params->seq &&
2864 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2865 params->seq_len, params->seq)) ||
2866 (params->cipher &&
2867 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2868 params->cipher)))
2869 goto nla_put_failure;
2870
2871 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2872 if (!key)
2873 goto nla_put_failure;
2874
2875 if ((params->key &&
2876 nla_put(cookie->msg, NL80211_KEY_DATA,
2877 params->key_len, params->key)) ||
2878 (params->seq &&
2879 nla_put(cookie->msg, NL80211_KEY_SEQ,
2880 params->seq_len, params->seq)) ||
2881 (params->cipher &&
2882 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2883 params->cipher)))
2884 goto nla_put_failure;
2885
2886 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2887 goto nla_put_failure;
2888
2889 nla_nest_end(cookie->msg, key);
2890
2891 return;
2892 nla_put_failure:
2893 cookie->error = 1;
2894 }
2895
2896 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2897 {
2898 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2899 int err;
2900 struct net_device *dev = info->user_ptr[1];
2901 u8 key_idx = 0;
2902 const u8 *mac_addr = NULL;
2903 bool pairwise;
2904 struct get_key_cookie cookie = {
2905 .error = 0,
2906 };
2907 void *hdr;
2908 struct sk_buff *msg;
2909
2910 if (info->attrs[NL80211_ATTR_KEY_IDX])
2911 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2912
2913 if (key_idx > 5)
2914 return -EINVAL;
2915
2916 if (info->attrs[NL80211_ATTR_MAC])
2917 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2918
2919 pairwise = !!mac_addr;
2920 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2921 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2922 if (kt >= NUM_NL80211_KEYTYPES)
2923 return -EINVAL;
2924 if (kt != NL80211_KEYTYPE_GROUP &&
2925 kt != NL80211_KEYTYPE_PAIRWISE)
2926 return -EINVAL;
2927 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2928 }
2929
2930 if (!rdev->ops->get_key)
2931 return -EOPNOTSUPP;
2932
2933 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2934 return -ENOENT;
2935
2936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2937 if (!msg)
2938 return -ENOMEM;
2939
2940 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2941 NL80211_CMD_NEW_KEY);
2942 if (!hdr)
2943 goto nla_put_failure;
2944
2945 cookie.msg = msg;
2946 cookie.idx = key_idx;
2947
2948 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2949 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2950 goto nla_put_failure;
2951 if (mac_addr &&
2952 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2953 goto nla_put_failure;
2954
2955 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2956 get_key_callback);
2957
2958 if (err)
2959 goto free_msg;
2960
2961 if (cookie.error)
2962 goto nla_put_failure;
2963
2964 genlmsg_end(msg, hdr);
2965 return genlmsg_reply(msg, info);
2966
2967 nla_put_failure:
2968 err = -ENOBUFS;
2969 free_msg:
2970 nlmsg_free(msg);
2971 return err;
2972 }
2973
2974 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2975 {
2976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2977 struct key_parse key;
2978 int err;
2979 struct net_device *dev = info->user_ptr[1];
2980
2981 err = nl80211_parse_key(info, &key);
2982 if (err)
2983 return err;
2984
2985 if (key.idx < 0)
2986 return -EINVAL;
2987
2988 /* only support setting default key */
2989 if (!key.def && !key.defmgmt)
2990 return -EINVAL;
2991
2992 wdev_lock(dev->ieee80211_ptr);
2993
2994 if (key.def) {
2995 if (!rdev->ops->set_default_key) {
2996 err = -EOPNOTSUPP;
2997 goto out;
2998 }
2999
3000 err = nl80211_key_allowed(dev->ieee80211_ptr);
3001 if (err)
3002 goto out;
3003
3004 err = rdev_set_default_key(rdev, dev, key.idx,
3005 key.def_uni, key.def_multi);
3006
3007 if (err)
3008 goto out;
3009
3010 #ifdef CONFIG_CFG80211_WEXT
3011 dev->ieee80211_ptr->wext.default_key = key.idx;
3012 #endif
3013 } else {
3014 if (key.def_uni || !key.def_multi) {
3015 err = -EINVAL;
3016 goto out;
3017 }
3018
3019 if (!rdev->ops->set_default_mgmt_key) {
3020 err = -EOPNOTSUPP;
3021 goto out;
3022 }
3023
3024 err = nl80211_key_allowed(dev->ieee80211_ptr);
3025 if (err)
3026 goto out;
3027
3028 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3029 if (err)
3030 goto out;
3031
3032 #ifdef CONFIG_CFG80211_WEXT
3033 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3034 #endif
3035 }
3036
3037 out:
3038 wdev_unlock(dev->ieee80211_ptr);
3039
3040 return err;
3041 }
3042
3043 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3044 {
3045 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3046 int err;
3047 struct net_device *dev = info->user_ptr[1];
3048 struct key_parse key;
3049 const u8 *mac_addr = NULL;
3050
3051 err = nl80211_parse_key(info, &key);
3052 if (err)
3053 return err;
3054
3055 if (!key.p.key)
3056 return -EINVAL;
3057
3058 if (info->attrs[NL80211_ATTR_MAC])
3059 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3060
3061 if (key.type == -1) {
3062 if (mac_addr)
3063 key.type = NL80211_KEYTYPE_PAIRWISE;
3064 else
3065 key.type = NL80211_KEYTYPE_GROUP;
3066 }
3067
3068 /* for now */
3069 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3070 key.type != NL80211_KEYTYPE_GROUP)
3071 return -EINVAL;
3072
3073 if (!rdev->ops->add_key)
3074 return -EOPNOTSUPP;
3075
3076 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3077 key.type == NL80211_KEYTYPE_PAIRWISE,
3078 mac_addr))
3079 return -EINVAL;
3080
3081 wdev_lock(dev->ieee80211_ptr);
3082 err = nl80211_key_allowed(dev->ieee80211_ptr);
3083 if (!err)
3084 err = rdev_add_key(rdev, dev, key.idx,
3085 key.type == NL80211_KEYTYPE_PAIRWISE,
3086 mac_addr, &key.p);
3087 wdev_unlock(dev->ieee80211_ptr);
3088
3089 return err;
3090 }
3091
3092 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3093 {
3094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3095 int err;
3096 struct net_device *dev = info->user_ptr[1];
3097 u8 *mac_addr = NULL;
3098 struct key_parse key;
3099
3100 err = nl80211_parse_key(info, &key);
3101 if (err)
3102 return err;
3103
3104 if (info->attrs[NL80211_ATTR_MAC])
3105 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3106
3107 if (key.type == -1) {
3108 if (mac_addr)
3109 key.type = NL80211_KEYTYPE_PAIRWISE;
3110 else
3111 key.type = NL80211_KEYTYPE_GROUP;
3112 }
3113
3114 /* for now */
3115 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3116 key.type != NL80211_KEYTYPE_GROUP)
3117 return -EINVAL;
3118
3119 if (!rdev->ops->del_key)
3120 return -EOPNOTSUPP;
3121
3122 wdev_lock(dev->ieee80211_ptr);
3123 err = nl80211_key_allowed(dev->ieee80211_ptr);
3124
3125 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3126 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3127 err = -ENOENT;
3128
3129 if (!err)
3130 err = rdev_del_key(rdev, dev, key.idx,
3131 key.type == NL80211_KEYTYPE_PAIRWISE,
3132 mac_addr);
3133
3134 #ifdef CONFIG_CFG80211_WEXT
3135 if (!err) {
3136 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3137 dev->ieee80211_ptr->wext.default_key = -1;
3138 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3139 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3140 }
3141 #endif
3142 wdev_unlock(dev->ieee80211_ptr);
3143
3144 return err;
3145 }
3146
3147 /* This function returns an error or the number of nested attributes */
3148 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3149 {
3150 struct nlattr *attr;
3151 int n_entries = 0, tmp;
3152
3153 nla_for_each_nested(attr, nl_attr, tmp) {
3154 if (nla_len(attr) != ETH_ALEN)
3155 return -EINVAL;
3156
3157 n_entries++;
3158 }
3159
3160 return n_entries;
3161 }
3162
3163 /*
3164 * This function parses ACL information and allocates memory for ACL data.
3165 * On successful return, the calling function is responsible to free the
3166 * ACL buffer returned by this function.
3167 */
3168 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3169 struct genl_info *info)
3170 {
3171 enum nl80211_acl_policy acl_policy;
3172 struct nlattr *attr;
3173 struct cfg80211_acl_data *acl;
3174 int i = 0, n_entries, tmp;
3175
3176 if (!wiphy->max_acl_mac_addrs)
3177 return ERR_PTR(-EOPNOTSUPP);
3178
3179 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3180 return ERR_PTR(-EINVAL);
3181
3182 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3183 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3184 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3185 return ERR_PTR(-EINVAL);
3186
3187 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3188 return ERR_PTR(-EINVAL);
3189
3190 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3191 if (n_entries < 0)
3192 return ERR_PTR(n_entries);
3193
3194 if (n_entries > wiphy->max_acl_mac_addrs)
3195 return ERR_PTR(-ENOTSUPP);
3196
3197 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3198 GFP_KERNEL);
3199 if (!acl)
3200 return ERR_PTR(-ENOMEM);
3201
3202 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3203 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3204 i++;
3205 }
3206
3207 acl->n_acl_entries = n_entries;
3208 acl->acl_policy = acl_policy;
3209
3210 return acl;
3211 }
3212
3213 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3214 {
3215 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3216 struct net_device *dev = info->user_ptr[1];
3217 struct cfg80211_acl_data *acl;
3218 int err;
3219
3220 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3221 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3222 return -EOPNOTSUPP;
3223
3224 if (!dev->ieee80211_ptr->beacon_interval)
3225 return -EINVAL;
3226
3227 acl = parse_acl_data(&rdev->wiphy, info);
3228 if (IS_ERR(acl))
3229 return PTR_ERR(acl);
3230
3231 err = rdev_set_mac_acl(rdev, dev, acl);
3232
3233 kfree(acl);
3234
3235 return err;
3236 }
3237
3238 static int nl80211_parse_beacon(struct nlattr *attrs[],
3239 struct cfg80211_beacon_data *bcn)
3240 {
3241 bool haveinfo = false;
3242
3243 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3244 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3245 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3246 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3247 return -EINVAL;
3248
3249 memset(bcn, 0, sizeof(*bcn));
3250
3251 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3252 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3253 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3254 if (!bcn->head_len)
3255 return -EINVAL;
3256 haveinfo = true;
3257 }
3258
3259 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3260 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3261 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3262 haveinfo = true;
3263 }
3264
3265 if (!haveinfo)
3266 return -EINVAL;
3267
3268 if (attrs[NL80211_ATTR_IE]) {
3269 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3270 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3271 }
3272
3273 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3274 bcn->proberesp_ies =
3275 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3276 bcn->proberesp_ies_len =
3277 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3278 }
3279
3280 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3281 bcn->assocresp_ies =
3282 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3283 bcn->assocresp_ies_len =
3284 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3285 }
3286
3287 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3288 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3289 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3290 }
3291
3292 return 0;
3293 }
3294
3295 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3296 struct cfg80211_ap_settings *params)
3297 {
3298 struct wireless_dev *wdev;
3299 bool ret = false;
3300
3301 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3302 if (wdev->iftype != NL80211_IFTYPE_AP &&
3303 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3304 continue;
3305
3306 if (!wdev->preset_chandef.chan)
3307 continue;
3308
3309 params->chandef = wdev->preset_chandef;
3310 ret = true;
3311 break;
3312 }
3313
3314 return ret;
3315 }
3316
3317 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3318 enum nl80211_auth_type auth_type,
3319 enum nl80211_commands cmd)
3320 {
3321 if (auth_type > NL80211_AUTHTYPE_MAX)
3322 return false;
3323
3324 switch (cmd) {
3325 case NL80211_CMD_AUTHENTICATE:
3326 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3327 auth_type == NL80211_AUTHTYPE_SAE)
3328 return false;
3329 return true;
3330 case NL80211_CMD_CONNECT:
3331 case NL80211_CMD_START_AP:
3332 /* SAE not supported yet */
3333 if (auth_type == NL80211_AUTHTYPE_SAE)
3334 return false;
3335 return true;
3336 default:
3337 return false;
3338 }
3339 }
3340
3341 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3342 {
3343 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3344 struct net_device *dev = info->user_ptr[1];
3345 struct wireless_dev *wdev = dev->ieee80211_ptr;
3346 struct cfg80211_ap_settings params;
3347 int err;
3348
3349 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3350 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3351 return -EOPNOTSUPP;
3352
3353 if (!rdev->ops->start_ap)
3354 return -EOPNOTSUPP;
3355
3356 if (wdev->beacon_interval)
3357 return -EALREADY;
3358
3359 memset(&params, 0, sizeof(params));
3360
3361 /* these are required for START_AP */
3362 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3363 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3364 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3365 return -EINVAL;
3366
3367 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3368 if (err)
3369 return err;
3370
3371 params.beacon_interval =
3372 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3373 params.dtim_period =
3374 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3375
3376 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3377 if (err)
3378 return err;
3379
3380 /*
3381 * In theory, some of these attributes should be required here
3382 * but since they were not used when the command was originally
3383 * added, keep them optional for old user space programs to let
3384 * them continue to work with drivers that do not need the
3385 * additional information -- drivers must check!
3386 */
3387 if (info->attrs[NL80211_ATTR_SSID]) {
3388 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3389 params.ssid_len =
3390 nla_len(info->attrs[NL80211_ATTR_SSID]);
3391 if (params.ssid_len == 0 ||
3392 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3393 return -EINVAL;
3394 }
3395
3396 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3397 params.hidden_ssid = nla_get_u32(
3398 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3399 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3400 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3401 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3402 return -EINVAL;
3403 }
3404
3405 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3406
3407 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3408 params.auth_type = nla_get_u32(
3409 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3410 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3411 NL80211_CMD_START_AP))
3412 return -EINVAL;
3413 } else
3414 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3415
3416 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3417 NL80211_MAX_NR_CIPHER_SUITES);
3418 if (err)
3419 return err;
3420
3421 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3422 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3423 return -EOPNOTSUPP;
3424 params.inactivity_timeout = nla_get_u16(
3425 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3426 }
3427
3428 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3429 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3430 return -EINVAL;
3431 params.p2p_ctwindow =
3432 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3433 if (params.p2p_ctwindow > 127)
3434 return -EINVAL;
3435 if (params.p2p_ctwindow != 0 &&
3436 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3437 return -EINVAL;
3438 }
3439
3440 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3441 u8 tmp;
3442
3443 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3444 return -EINVAL;
3445 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3446 if (tmp > 1)
3447 return -EINVAL;
3448 params.p2p_opp_ps = tmp;
3449 if (params.p2p_opp_ps != 0 &&
3450 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3451 return -EINVAL;
3452 }
3453
3454 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3455 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3456 if (err)
3457 return err;
3458 } else if (wdev->preset_chandef.chan) {
3459 params.chandef = wdev->preset_chandef;
3460 } else if (!nl80211_get_ap_channel(rdev, &params))
3461 return -EINVAL;
3462
3463 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3464 wdev->iftype))
3465 return -EINVAL;
3466
3467 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3468 params.smps_mode =
3469 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3470 switch (params.smps_mode) {
3471 case NL80211_SMPS_OFF:
3472 break;
3473 case NL80211_SMPS_STATIC:
3474 if (!(rdev->wiphy.features &
3475 NL80211_FEATURE_STATIC_SMPS))
3476 return -EINVAL;
3477 break;
3478 case NL80211_SMPS_DYNAMIC:
3479 if (!(rdev->wiphy.features &
3480 NL80211_FEATURE_DYNAMIC_SMPS))
3481 return -EINVAL;
3482 break;
3483 default:
3484 return -EINVAL;
3485 }
3486 } else {
3487 params.smps_mode = NL80211_SMPS_OFF;
3488 }
3489
3490 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3491 params.acl = parse_acl_data(&rdev->wiphy, info);
3492 if (IS_ERR(params.acl))
3493 return PTR_ERR(params.acl);
3494 }
3495
3496 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3497 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3498 return -EOPNOTSUPP;
3499
3500 wdev_lock(wdev);
3501 err = rdev_start_ap(rdev, dev, &params);
3502 if (!err) {
3503 wdev->preset_chandef = params.chandef;
3504 wdev->beacon_interval = params.beacon_interval;
3505 wdev->chandef = params.chandef;
3506 wdev->ssid_len = params.ssid_len;
3507 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3508 }
3509 wdev_unlock(wdev);
3510
3511 kfree(params.acl);
3512
3513 return err;
3514 }
3515
3516 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3517 {
3518 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3519 struct net_device *dev = info->user_ptr[1];
3520 struct wireless_dev *wdev = dev->ieee80211_ptr;
3521 struct cfg80211_beacon_data params;
3522 int err;
3523
3524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3525 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3526 return -EOPNOTSUPP;
3527
3528 if (!rdev->ops->change_beacon)
3529 return -EOPNOTSUPP;
3530
3531 if (!wdev->beacon_interval)
3532 return -EINVAL;
3533
3534 err = nl80211_parse_beacon(info->attrs, &params);
3535 if (err)
3536 return err;
3537
3538 wdev_lock(wdev);
3539 err = rdev_change_beacon(rdev, dev, &params);
3540 wdev_unlock(wdev);
3541
3542 return err;
3543 }
3544
3545 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3546 {
3547 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3548 struct net_device *dev = info->user_ptr[1];
3549
3550 return cfg80211_stop_ap(rdev, dev, false);
3551 }
3552
3553 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3554 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3555 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3556 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3557 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3558 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3559 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3560 };
3561
3562 static int parse_station_flags(struct genl_info *info,
3563 enum nl80211_iftype iftype,
3564 struct station_parameters *params)
3565 {
3566 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3567 struct nlattr *nla;
3568 int flag;
3569
3570 /*
3571 * Try parsing the new attribute first so userspace
3572 * can specify both for older kernels.
3573 */
3574 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3575 if (nla) {
3576 struct nl80211_sta_flag_update *sta_flags;
3577
3578 sta_flags = nla_data(nla);
3579 params->sta_flags_mask = sta_flags->mask;
3580 params->sta_flags_set = sta_flags->set;
3581 params->sta_flags_set &= params->sta_flags_mask;
3582 if ((params->sta_flags_mask |
3583 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3584 return -EINVAL;
3585 return 0;
3586 }
3587
3588 /* if present, parse the old attribute */
3589
3590 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3591 if (!nla)
3592 return 0;
3593
3594 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3595 nla, sta_flags_policy))
3596 return -EINVAL;
3597
3598 /*
3599 * Only allow certain flags for interface types so that
3600 * other attributes are silently ignored. Remember that
3601 * this is backward compatibility code with old userspace
3602 * and shouldn't be hit in other cases anyway.
3603 */
3604 switch (iftype) {
3605 case NL80211_IFTYPE_AP:
3606 case NL80211_IFTYPE_AP_VLAN:
3607 case NL80211_IFTYPE_P2P_GO:
3608 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3609 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3610 BIT(NL80211_STA_FLAG_WME) |
3611 BIT(NL80211_STA_FLAG_MFP);
3612 break;
3613 case NL80211_IFTYPE_P2P_CLIENT:
3614 case NL80211_IFTYPE_STATION:
3615 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3616 BIT(NL80211_STA_FLAG_TDLS_PEER);
3617 break;
3618 case NL80211_IFTYPE_MESH_POINT:
3619 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3620 BIT(NL80211_STA_FLAG_MFP) |
3621 BIT(NL80211_STA_FLAG_AUTHORIZED);
3622 default:
3623 return -EINVAL;
3624 }
3625
3626 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3627 if (flags[flag]) {
3628 params->sta_flags_set |= (1<<flag);
3629
3630 /* no longer support new API additions in old API */
3631 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3632 return -EINVAL;
3633 }
3634 }
3635
3636 return 0;
3637 }
3638
3639 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3640 int attr)
3641 {
3642 struct nlattr *rate;
3643 u32 bitrate;
3644 u16 bitrate_compat;
3645 enum nl80211_attrs rate_flg;
3646
3647 rate = nla_nest_start(msg, attr);
3648 if (!rate)
3649 return false;
3650
3651 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3652 bitrate = cfg80211_calculate_bitrate(info);
3653 /* report 16-bit bitrate only if we can */
3654 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3655 if (bitrate > 0 &&
3656 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3657 return false;
3658 if (bitrate_compat > 0 &&
3659 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3660 return false;
3661
3662 switch (info->bw) {
3663 case RATE_INFO_BW_5:
3664 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3665 break;
3666 case RATE_INFO_BW_10:
3667 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3668 break;
3669 default:
3670 WARN_ON(1);
3671 /* fall through */
3672 case RATE_INFO_BW_20:
3673 rate_flg = 0;
3674 break;
3675 case RATE_INFO_BW_40:
3676 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3677 break;
3678 case RATE_INFO_BW_80:
3679 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3680 break;
3681 case RATE_INFO_BW_160:
3682 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3683 break;
3684 }
3685
3686 if (rate_flg && nla_put_flag(msg, rate_flg))
3687 return false;
3688
3689 if (info->flags & RATE_INFO_FLAGS_MCS) {
3690 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3691 return false;
3692 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3693 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3694 return false;
3695 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3696 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3697 return false;
3698 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3699 return false;
3700 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3701 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3702 return false;
3703 }
3704
3705 nla_nest_end(msg, rate);
3706 return true;
3707 }
3708
3709 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3710 int id)
3711 {
3712 void *attr;
3713 int i = 0;
3714
3715 if (!mask)
3716 return true;
3717
3718 attr = nla_nest_start(msg, id);
3719 if (!attr)
3720 return false;
3721
3722 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3723 if (!(mask & BIT(i)))
3724 continue;
3725
3726 if (nla_put_u8(msg, i, signal[i]))
3727 return false;
3728 }
3729
3730 nla_nest_end(msg, attr);
3731
3732 return true;
3733 }
3734
3735 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3736 u32 seq, int flags,
3737 struct cfg80211_registered_device *rdev,
3738 struct net_device *dev,
3739 const u8 *mac_addr, struct station_info *sinfo)
3740 {
3741 void *hdr;
3742 struct nlattr *sinfoattr, *bss_param;
3743
3744 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3745 if (!hdr)
3746 return -1;
3747
3748 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3749 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3750 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3751 goto nla_put_failure;
3752
3753 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3754 if (!sinfoattr)
3755 goto nla_put_failure;
3756
3757 #define PUT_SINFO(attr, memb, type) do { \
3758 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3759 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3760 sinfo->memb)) \
3761 goto nla_put_failure; \
3762 } while (0)
3763
3764 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3765 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3766
3767 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3768 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3769 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3770 (u32)sinfo->rx_bytes))
3771 goto nla_put_failure;
3772
3773 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3774 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3775 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3776 (u32)sinfo->tx_bytes))
3777 goto nla_put_failure;
3778
3779 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3780 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3781 PUT_SINFO(LLID, llid, u16);
3782 PUT_SINFO(PLID, plid, u16);
3783 PUT_SINFO(PLINK_STATE, plink_state, u8);
3784
3785 switch (rdev->wiphy.signal_type) {
3786 case CFG80211_SIGNAL_TYPE_MBM:
3787 PUT_SINFO(SIGNAL, signal, u8);
3788 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3789 break;
3790 default:
3791 break;
3792 }
3793 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3794 if (!nl80211_put_signal(msg, sinfo->chains,
3795 sinfo->chain_signal,
3796 NL80211_STA_INFO_CHAIN_SIGNAL))
3797 goto nla_put_failure;
3798 }
3799 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3800 if (!nl80211_put_signal(msg, sinfo->chains,
3801 sinfo->chain_signal_avg,
3802 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3803 goto nla_put_failure;
3804 }
3805 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3806 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3807 NL80211_STA_INFO_TX_BITRATE))
3808 goto nla_put_failure;
3809 }
3810 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3811 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3812 NL80211_STA_INFO_RX_BITRATE))
3813 goto nla_put_failure;
3814 }
3815
3816 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3817 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3818 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3819 PUT_SINFO(TX_FAILED, tx_failed, u32);
3820 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3821 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3822 PUT_SINFO(LOCAL_PM, local_pm, u32);
3823 PUT_SINFO(PEER_PM, peer_pm, u32);
3824 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3825
3826 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3827 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3828 if (!bss_param)
3829 goto nla_put_failure;
3830
3831 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3832 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3833 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3834 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3835 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3836 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3837 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3838 sinfo->bss_param.dtim_period) ||
3839 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3840 sinfo->bss_param.beacon_interval))
3841 goto nla_put_failure;
3842
3843 nla_nest_end(msg, bss_param);
3844 }
3845 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3846 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3847 sizeof(struct nl80211_sta_flag_update),
3848 &sinfo->sta_flags))
3849 goto nla_put_failure;
3850
3851 PUT_SINFO(T_OFFSET, t_offset, u64);
3852 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3853 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3854 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3855
3856 #undef PUT_SINFO
3857
3858 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3859 struct nlattr *tidsattr;
3860 int tid;
3861
3862 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3863 if (!tidsattr)
3864 goto nla_put_failure;
3865
3866 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3867 struct cfg80211_tid_stats *tidstats;
3868 struct nlattr *tidattr;
3869
3870 tidstats = &sinfo->pertid[tid];
3871
3872 if (!tidstats->filled)
3873 continue;
3874
3875 tidattr = nla_nest_start(msg, tid + 1);
3876 if (!tidattr)
3877 goto nla_put_failure;
3878
3879 #define PUT_TIDVAL(attr, memb, type) do { \
3880 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3881 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3882 tidstats->memb)) \
3883 goto nla_put_failure; \
3884 } while (0)
3885
3886 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3887 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3888 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3889 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3890
3891 #undef PUT_TIDVAL
3892 nla_nest_end(msg, tidattr);
3893 }
3894
3895 nla_nest_end(msg, tidsattr);
3896 }
3897
3898 nla_nest_end(msg, sinfoattr);
3899
3900 if (sinfo->assoc_req_ies_len &&
3901 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3902 sinfo->assoc_req_ies))
3903 goto nla_put_failure;
3904
3905 genlmsg_end(msg, hdr);
3906 return 0;
3907
3908 nla_put_failure:
3909 genlmsg_cancel(msg, hdr);
3910 return -EMSGSIZE;
3911 }
3912
3913 static int nl80211_dump_station(struct sk_buff *skb,
3914 struct netlink_callback *cb)
3915 {
3916 struct station_info sinfo;
3917 struct cfg80211_registered_device *rdev;
3918 struct wireless_dev *wdev;
3919 u8 mac_addr[ETH_ALEN];
3920 int sta_idx = cb->args[2];
3921 int err;
3922
3923 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3924 if (err)
3925 return err;
3926
3927 if (!wdev->netdev) {
3928 err = -EINVAL;
3929 goto out_err;
3930 }
3931
3932 if (!rdev->ops->dump_station) {
3933 err = -EOPNOTSUPP;
3934 goto out_err;
3935 }
3936
3937 while (1) {
3938 memset(&sinfo, 0, sizeof(sinfo));
3939 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3940 mac_addr, &sinfo);
3941 if (err == -ENOENT)
3942 break;
3943 if (err)
3944 goto out_err;
3945
3946 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3947 NETLINK_CB(cb->skb).portid,
3948 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3949 rdev, wdev->netdev, mac_addr,
3950 &sinfo) < 0)
3951 goto out;
3952
3953 sta_idx++;
3954 }
3955
3956
3957 out:
3958 cb->args[2] = sta_idx;
3959 err = skb->len;
3960 out_err:
3961 nl80211_finish_wdev_dump(rdev);
3962
3963 return err;
3964 }
3965
3966 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3967 {
3968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3969 struct net_device *dev = info->user_ptr[1];
3970 struct station_info sinfo;
3971 struct sk_buff *msg;
3972 u8 *mac_addr = NULL;
3973 int err;
3974
3975 memset(&sinfo, 0, sizeof(sinfo));
3976
3977 if (!info->attrs[NL80211_ATTR_MAC])
3978 return -EINVAL;
3979
3980 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3981
3982 if (!rdev->ops->get_station)
3983 return -EOPNOTSUPP;
3984
3985 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3986 if (err)
3987 return err;
3988
3989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3990 if (!msg)
3991 return -ENOMEM;
3992
3993 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3994 info->snd_portid, info->snd_seq, 0,
3995 rdev, dev, mac_addr, &sinfo) < 0) {
3996 nlmsg_free(msg);
3997 return -ENOBUFS;
3998 }
3999
4000 return genlmsg_reply(msg, info);
4001 }
4002
4003 int cfg80211_check_station_change(struct wiphy *wiphy,
4004 struct station_parameters *params,
4005 enum cfg80211_station_type statype)
4006 {
4007 if (params->listen_interval != -1 &&
4008 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4009 return -EINVAL;
4010
4011 if (params->support_p2p_ps != -1 &&
4012 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4013 return -EINVAL;
4014
4015 if (params->aid &&
4016 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4017 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4018 return -EINVAL;
4019
4020 /* When you run into this, adjust the code below for the new flag */
4021 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4022
4023 switch (statype) {
4024 case CFG80211_STA_MESH_PEER_KERNEL:
4025 case CFG80211_STA_MESH_PEER_USER:
4026 /*
4027 * No ignoring the TDLS flag here -- the userspace mesh
4028 * code doesn't have the bug of including TDLS in the
4029 * mask everywhere.
4030 */
4031 if (params->sta_flags_mask &
4032 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4033 BIT(NL80211_STA_FLAG_MFP) |
4034 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4035 return -EINVAL;
4036 break;
4037 case CFG80211_STA_TDLS_PEER_SETUP:
4038 case CFG80211_STA_TDLS_PEER_ACTIVE:
4039 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4040 return -EINVAL;
4041 /* ignore since it can't change */
4042 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4043 break;
4044 default:
4045 /* disallow mesh-specific things */
4046 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4047 return -EINVAL;
4048 if (params->local_pm)
4049 return -EINVAL;
4050 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4051 return -EINVAL;
4052 }
4053
4054 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4055 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4056 /* TDLS can't be set, ... */
4057 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4058 return -EINVAL;
4059 /*
4060 * ... but don't bother the driver with it. This works around
4061 * a hostapd/wpa_supplicant issue -- it always includes the
4062 * TLDS_PEER flag in the mask even for AP mode.
4063 */
4064 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4065 }
4066
4067 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4068 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4069 /* reject other things that can't change */
4070 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4071 return -EINVAL;
4072 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4073 return -EINVAL;
4074 if (params->supported_rates)
4075 return -EINVAL;
4076 if (params->ext_capab || params->ht_capa || params->vht_capa)
4077 return -EINVAL;
4078 }
4079
4080 if (statype != CFG80211_STA_AP_CLIENT &&
4081 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4082 if (params->vlan)
4083 return -EINVAL;
4084 }
4085
4086 switch (statype) {
4087 case CFG80211_STA_AP_MLME_CLIENT:
4088 /* Use this only for authorizing/unauthorizing a station */
4089 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4090 return -EOPNOTSUPP;
4091 break;
4092 case CFG80211_STA_AP_CLIENT:
4093 case CFG80211_STA_AP_CLIENT_UNASSOC:
4094 /* accept only the listed bits */
4095 if (params->sta_flags_mask &
4096 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4097 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4098 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4099 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4100 BIT(NL80211_STA_FLAG_WME) |
4101 BIT(NL80211_STA_FLAG_MFP)))
4102 return -EINVAL;
4103
4104 /* but authenticated/associated only if driver handles it */
4105 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4106 params->sta_flags_mask &
4107 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4108 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4109 return -EINVAL;
4110 break;
4111 case CFG80211_STA_IBSS:
4112 case CFG80211_STA_AP_STA:
4113 /* reject any changes other than AUTHORIZED */
4114 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4115 return -EINVAL;
4116 break;
4117 case CFG80211_STA_TDLS_PEER_SETUP:
4118 /* reject any changes other than AUTHORIZED or WME */
4119 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4120 BIT(NL80211_STA_FLAG_WME)))
4121 return -EINVAL;
4122 /* force (at least) rates when authorizing */
4123 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4124 !params->supported_rates)
4125 return -EINVAL;
4126 break;
4127 case CFG80211_STA_TDLS_PEER_ACTIVE:
4128 /* reject any changes */
4129 return -EINVAL;
4130 case CFG80211_STA_MESH_PEER_KERNEL:
4131 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4132 return -EINVAL;
4133 break;
4134 case CFG80211_STA_MESH_PEER_USER:
4135 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4136 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4137 return -EINVAL;
4138 break;
4139 }
4140
4141 return 0;
4142 }
4143 EXPORT_SYMBOL(cfg80211_check_station_change);
4144
4145 /*
4146 * Get vlan interface making sure it is running and on the right wiphy.
4147 */
4148 static struct net_device *get_vlan(struct genl_info *info,
4149 struct cfg80211_registered_device *rdev)
4150 {
4151 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4152 struct net_device *v;
4153 int ret;
4154
4155 if (!vlanattr)
4156 return NULL;
4157
4158 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4159 if (!v)
4160 return ERR_PTR(-ENODEV);
4161
4162 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4163 ret = -EINVAL;
4164 goto error;
4165 }
4166
4167 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4168 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4169 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4170 ret = -EINVAL;
4171 goto error;
4172 }
4173
4174 if (!netif_running(v)) {
4175 ret = -ENETDOWN;
4176 goto error;
4177 }
4178
4179 return v;
4180 error:
4181 dev_put(v);
4182 return ERR_PTR(ret);
4183 }
4184
4185 static const struct nla_policy
4186 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4187 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4188 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4189 };
4190
4191 static int nl80211_parse_sta_wme(struct genl_info *info,
4192 struct station_parameters *params)
4193 {
4194 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4195 struct nlattr *nla;
4196 int err;
4197
4198 /* parse WME attributes if present */
4199 if (!info->attrs[NL80211_ATTR_STA_WME])
4200 return 0;
4201
4202 nla = info->attrs[NL80211_ATTR_STA_WME];
4203 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4204 nl80211_sta_wme_policy);
4205 if (err)
4206 return err;
4207
4208 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4209 params->uapsd_queues = nla_get_u8(
4210 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4211 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4212 return -EINVAL;
4213
4214 if (tb[NL80211_STA_WME_MAX_SP])
4215 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4216
4217 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4218 return -EINVAL;
4219
4220 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4221
4222 return 0;
4223 }
4224
4225 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4226 struct station_parameters *params)
4227 {
4228 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4229 params->supported_channels =
4230 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4231 params->supported_channels_len =
4232 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4233 /*
4234 * Need to include at least one (first channel, number of
4235 * channels) tuple for each subband, and must have proper
4236 * tuples for the rest of the data as well.
4237 */
4238 if (params->supported_channels_len < 2)
4239 return -EINVAL;
4240 if (params->supported_channels_len % 2)
4241 return -EINVAL;
4242 }
4243
4244 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4245 params->supported_oper_classes =
4246 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4247 params->supported_oper_classes_len =
4248 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4249 /*
4250 * The value of the Length field of the Supported Operating
4251 * Classes element is between 2 and 253.
4252 */
4253 if (params->supported_oper_classes_len < 2 ||
4254 params->supported_oper_classes_len > 253)
4255 return -EINVAL;
4256 }
4257 return 0;
4258 }
4259
4260 static int nl80211_set_station_tdls(struct genl_info *info,
4261 struct station_parameters *params)
4262 {
4263 int err;
4264 /* Dummy STA entry gets updated once the peer capabilities are known */
4265 if (info->attrs[NL80211_ATTR_PEER_AID])
4266 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4267 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4268 params->ht_capa =
4269 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4270 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4271 params->vht_capa =
4272 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4273
4274 err = nl80211_parse_sta_channel_info(info, params);
4275 if (err)
4276 return err;
4277
4278 return nl80211_parse_sta_wme(info, params);
4279 }
4280
4281 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4282 {
4283 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4284 struct net_device *dev = info->user_ptr[1];
4285 struct station_parameters params;
4286 u8 *mac_addr;
4287 int err;
4288
4289 memset(&params, 0, sizeof(params));
4290
4291 if (!rdev->ops->change_station)
4292 return -EOPNOTSUPP;
4293
4294 /*
4295 * AID and listen_interval properties can be set only for unassociated
4296 * station. Include these parameters here and will check them in
4297 * cfg80211_check_station_change().
4298 */
4299 if (info->attrs[NL80211_ATTR_STA_AID])
4300 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4301
4302 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4303 params.listen_interval =
4304 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4305 else
4306 params.listen_interval = -1;
4307
4308 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4309 u8 tmp;
4310
4311 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4312 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4313 return -EINVAL;
4314
4315 params.support_p2p_ps = tmp;
4316 } else {
4317 params.support_p2p_ps = -1;
4318 }
4319
4320 if (!info->attrs[NL80211_ATTR_MAC])
4321 return -EINVAL;
4322
4323 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4324
4325 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4326 params.supported_rates =
4327 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4328 params.supported_rates_len =
4329 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4330 }
4331
4332 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4333 params.capability =
4334 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4335 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4336 }
4337
4338 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4339 params.ext_capab =
4340 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4341 params.ext_capab_len =
4342 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4343 }
4344
4345 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4346 return -EINVAL;
4347
4348 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4349 params.plink_action =
4350 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4351 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4352 return -EINVAL;
4353 }
4354
4355 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4356 params.plink_state =
4357 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4358 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4359 return -EINVAL;
4360 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4361 }
4362
4363 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4364 enum nl80211_mesh_power_mode pm = nla_get_u32(
4365 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4366
4367 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4368 pm > NL80211_MESH_POWER_MAX)
4369 return -EINVAL;
4370
4371 params.local_pm = pm;
4372 }
4373
4374 /* Include parameters for TDLS peer (will check later) */
4375 err = nl80211_set_station_tdls(info, &params);
4376 if (err)
4377 return err;
4378
4379 params.vlan = get_vlan(info, rdev);
4380 if (IS_ERR(params.vlan))
4381 return PTR_ERR(params.vlan);
4382
4383 switch (dev->ieee80211_ptr->iftype) {
4384 case NL80211_IFTYPE_AP:
4385 case NL80211_IFTYPE_AP_VLAN:
4386 case NL80211_IFTYPE_P2P_GO:
4387 case NL80211_IFTYPE_P2P_CLIENT:
4388 case NL80211_IFTYPE_STATION:
4389 case NL80211_IFTYPE_ADHOC:
4390 case NL80211_IFTYPE_MESH_POINT:
4391 break;
4392 default:
4393 err = -EOPNOTSUPP;
4394 goto out_put_vlan;
4395 }
4396
4397 /* driver will call cfg80211_check_station_change() */
4398 err = rdev_change_station(rdev, dev, mac_addr, &params);
4399
4400 out_put_vlan:
4401 if (params.vlan)
4402 dev_put(params.vlan);
4403
4404 return err;
4405 }
4406
4407 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4408 {
4409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4410 int err;
4411 struct net_device *dev = info->user_ptr[1];
4412 struct station_parameters params;
4413 u8 *mac_addr = NULL;
4414 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4415 BIT(NL80211_STA_FLAG_ASSOCIATED);
4416
4417 memset(&params, 0, sizeof(params));
4418
4419 if (!rdev->ops->add_station)
4420 return -EOPNOTSUPP;
4421
4422 if (!info->attrs[NL80211_ATTR_MAC])
4423 return -EINVAL;
4424
4425 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4426 return -EINVAL;
4427
4428 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4429 return -EINVAL;
4430
4431 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4432 !info->attrs[NL80211_ATTR_PEER_AID])
4433 return -EINVAL;
4434
4435 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4436 params.supported_rates =
4437 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4438 params.supported_rates_len =
4439 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4440 params.listen_interval =
4441 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4442
4443 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4444 u8 tmp;
4445
4446 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4447 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4448 return -EINVAL;
4449
4450 params.support_p2p_ps = tmp;
4451 } else {
4452 /*
4453 * if not specified, assume it's supported for P2P GO interface,
4454 * and is NOT supported for AP interface
4455 */
4456 params.support_p2p_ps =
4457 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4458 }
4459
4460 if (info->attrs[NL80211_ATTR_PEER_AID])
4461 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4462 else
4463 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4464 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4465 return -EINVAL;
4466
4467 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4468 params.capability =
4469 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4470 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4471 }
4472
4473 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4474 params.ext_capab =
4475 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4476 params.ext_capab_len =
4477 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4478 }
4479
4480 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4481 params.ht_capa =
4482 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4483
4484 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4485 params.vht_capa =
4486 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4487
4488 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4489 params.opmode_notif_used = true;
4490 params.opmode_notif =
4491 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4492 }
4493
4494 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4495 params.plink_action =
4496 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4497 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4498 return -EINVAL;
4499 }
4500
4501 err = nl80211_parse_sta_channel_info(info, &params);
4502 if (err)
4503 return err;
4504
4505 err = nl80211_parse_sta_wme(info, &params);
4506 if (err)
4507 return err;
4508
4509 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4510 return -EINVAL;
4511
4512 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4513 * as userspace might just pass through the capabilities from the IEs
4514 * directly, rather than enforcing this restriction and returning an
4515 * error in this case.
4516 */
4517 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4518 params.ht_capa = NULL;
4519 params.vht_capa = NULL;
4520 }
4521
4522 /* When you run into this, adjust the code below for the new flag */
4523 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4524
4525 switch (dev->ieee80211_ptr->iftype) {
4526 case NL80211_IFTYPE_AP:
4527 case NL80211_IFTYPE_AP_VLAN:
4528 case NL80211_IFTYPE_P2P_GO:
4529 /* ignore WME attributes if iface/sta is not capable */
4530 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4531 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4532 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4533
4534 /* TDLS peers cannot be added */
4535 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4536 info->attrs[NL80211_ATTR_PEER_AID])
4537 return -EINVAL;
4538 /* but don't bother the driver with it */
4539 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4540
4541 /* allow authenticated/associated only if driver handles it */
4542 if (!(rdev->wiphy.features &
4543 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4544 params.sta_flags_mask & auth_assoc)
4545 return -EINVAL;
4546
4547 /* Older userspace, or userspace wanting to be compatible with
4548 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4549 * and assoc flags in the mask, but assumes the station will be
4550 * added as associated anyway since this was the required driver
4551 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4552 * introduced.
4553 * In order to not bother drivers with this quirk in the API
4554 * set the flags in both the mask and set for new stations in
4555 * this case.
4556 */
4557 if (!(params.sta_flags_mask & auth_assoc)) {
4558 params.sta_flags_mask |= auth_assoc;
4559 params.sta_flags_set |= auth_assoc;
4560 }
4561
4562 /* must be last in here for error handling */
4563 params.vlan = get_vlan(info, rdev);
4564 if (IS_ERR(params.vlan))
4565 return PTR_ERR(params.vlan);
4566 break;
4567 case NL80211_IFTYPE_MESH_POINT:
4568 /* ignore uAPSD data */
4569 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4570
4571 /* associated is disallowed */
4572 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4573 return -EINVAL;
4574 /* TDLS peers cannot be added */
4575 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4576 info->attrs[NL80211_ATTR_PEER_AID])
4577 return -EINVAL;
4578 break;
4579 case NL80211_IFTYPE_STATION:
4580 case NL80211_IFTYPE_P2P_CLIENT:
4581 /* ignore uAPSD data */
4582 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4583
4584 /* these are disallowed */
4585 if (params.sta_flags_mask &
4586 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4587 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4588 return -EINVAL;
4589 /* Only TDLS peers can be added */
4590 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4591 return -EINVAL;
4592 /* Can only add if TDLS ... */
4593 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4594 return -EOPNOTSUPP;
4595 /* ... with external setup is supported */
4596 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4597 return -EOPNOTSUPP;
4598 /*
4599 * Older wpa_supplicant versions always mark the TDLS peer
4600 * as authorized, but it shouldn't yet be.
4601 */
4602 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4603 break;
4604 default:
4605 return -EOPNOTSUPP;
4606 }
4607
4608 /* be aware of params.vlan when changing code here */
4609
4610 err = rdev_add_station(rdev, dev, mac_addr, &params);
4611
4612 if (params.vlan)
4613 dev_put(params.vlan);
4614 return err;
4615 }
4616
4617 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4618 {
4619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4620 struct net_device *dev = info->user_ptr[1];
4621 struct station_del_parameters params;
4622
4623 memset(&params, 0, sizeof(params));
4624
4625 if (info->attrs[NL80211_ATTR_MAC])
4626 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4627
4628 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4629 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4630 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4631 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4632 return -EINVAL;
4633
4634 if (!rdev->ops->del_station)
4635 return -EOPNOTSUPP;
4636
4637 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4638 params.subtype =
4639 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4640 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4641 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4642 return -EINVAL;
4643 } else {
4644 /* Default to Deauthentication frame */
4645 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4646 }
4647
4648 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4649 params.reason_code =
4650 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4651 if (params.reason_code == 0)
4652 return -EINVAL; /* 0 is reserved */
4653 } else {
4654 /* Default to reason code 2 */
4655 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4656 }
4657
4658 return rdev_del_station(rdev, dev, &params);
4659 }
4660
4661 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4662 int flags, struct net_device *dev,
4663 u8 *dst, u8 *next_hop,
4664 struct mpath_info *pinfo)
4665 {
4666 void *hdr;
4667 struct nlattr *pinfoattr;
4668
4669 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4670 if (!hdr)
4671 return -1;
4672
4673 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4674 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4675 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4676 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4677 goto nla_put_failure;
4678
4679 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4680 if (!pinfoattr)
4681 goto nla_put_failure;
4682 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4683 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4684 pinfo->frame_qlen))
4685 goto nla_put_failure;
4686 if (((pinfo->filled & MPATH_INFO_SN) &&
4687 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4688 ((pinfo->filled & MPATH_INFO_METRIC) &&
4689 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4690 pinfo->metric)) ||
4691 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4692 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4693 pinfo->exptime)) ||
4694 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4695 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4696 pinfo->flags)) ||
4697 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4698 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4699 pinfo->discovery_timeout)) ||
4700 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4701 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4702 pinfo->discovery_retries)))
4703 goto nla_put_failure;
4704
4705 nla_nest_end(msg, pinfoattr);
4706
4707 genlmsg_end(msg, hdr);
4708 return 0;
4709
4710 nla_put_failure:
4711 genlmsg_cancel(msg, hdr);
4712 return -EMSGSIZE;
4713 }
4714
4715 static int nl80211_dump_mpath(struct sk_buff *skb,
4716 struct netlink_callback *cb)
4717 {
4718 struct mpath_info pinfo;
4719 struct cfg80211_registered_device *rdev;
4720 struct wireless_dev *wdev;
4721 u8 dst[ETH_ALEN];
4722 u8 next_hop[ETH_ALEN];
4723 int path_idx = cb->args[2];
4724 int err;
4725
4726 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4727 if (err)
4728 return err;
4729
4730 if (!rdev->ops->dump_mpath) {
4731 err = -EOPNOTSUPP;
4732 goto out_err;
4733 }
4734
4735 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4736 err = -EOPNOTSUPP;
4737 goto out_err;
4738 }
4739
4740 while (1) {
4741 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4742 next_hop, &pinfo);
4743 if (err == -ENOENT)
4744 break;
4745 if (err)
4746 goto out_err;
4747
4748 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4749 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4750 wdev->netdev, dst, next_hop,
4751 &pinfo) < 0)
4752 goto out;
4753
4754 path_idx++;
4755 }
4756
4757
4758 out:
4759 cb->args[2] = path_idx;
4760 err = skb->len;
4761 out_err:
4762 nl80211_finish_wdev_dump(rdev);
4763 return err;
4764 }
4765
4766 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4767 {
4768 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4769 int err;
4770 struct net_device *dev = info->user_ptr[1];
4771 struct mpath_info pinfo;
4772 struct sk_buff *msg;
4773 u8 *dst = NULL;
4774 u8 next_hop[ETH_ALEN];
4775
4776 memset(&pinfo, 0, sizeof(pinfo));
4777
4778 if (!info->attrs[NL80211_ATTR_MAC])
4779 return -EINVAL;
4780
4781 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4782
4783 if (!rdev->ops->get_mpath)
4784 return -EOPNOTSUPP;
4785
4786 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4787 return -EOPNOTSUPP;
4788
4789 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4790 if (err)
4791 return err;
4792
4793 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4794 if (!msg)
4795 return -ENOMEM;
4796
4797 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4798 dev, dst, next_hop, &pinfo) < 0) {
4799 nlmsg_free(msg);
4800 return -ENOBUFS;
4801 }
4802
4803 return genlmsg_reply(msg, info);
4804 }
4805
4806 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4807 {
4808 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4809 struct net_device *dev = info->user_ptr[1];
4810 u8 *dst = NULL;
4811 u8 *next_hop = NULL;
4812
4813 if (!info->attrs[NL80211_ATTR_MAC])
4814 return -EINVAL;
4815
4816 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4817 return -EINVAL;
4818
4819 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4820 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4821
4822 if (!rdev->ops->change_mpath)
4823 return -EOPNOTSUPP;
4824
4825 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4826 return -EOPNOTSUPP;
4827
4828 return rdev_change_mpath(rdev, dev, dst, next_hop);
4829 }
4830
4831 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4832 {
4833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4834 struct net_device *dev = info->user_ptr[1];
4835 u8 *dst = NULL;
4836 u8 *next_hop = NULL;
4837
4838 if (!info->attrs[NL80211_ATTR_MAC])
4839 return -EINVAL;
4840
4841 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4842 return -EINVAL;
4843
4844 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4845 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4846
4847 if (!rdev->ops->add_mpath)
4848 return -EOPNOTSUPP;
4849
4850 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4851 return -EOPNOTSUPP;
4852
4853 return rdev_add_mpath(rdev, dev, dst, next_hop);
4854 }
4855
4856 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4857 {
4858 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4859 struct net_device *dev = info->user_ptr[1];
4860 u8 *dst = NULL;
4861
4862 if (info->attrs[NL80211_ATTR_MAC])
4863 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4864
4865 if (!rdev->ops->del_mpath)
4866 return -EOPNOTSUPP;
4867
4868 return rdev_del_mpath(rdev, dev, dst);
4869 }
4870
4871 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4872 {
4873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4874 int err;
4875 struct net_device *dev = info->user_ptr[1];
4876 struct mpath_info pinfo;
4877 struct sk_buff *msg;
4878 u8 *dst = NULL;
4879 u8 mpp[ETH_ALEN];
4880
4881 memset(&pinfo, 0, sizeof(pinfo));
4882
4883 if (!info->attrs[NL80211_ATTR_MAC])
4884 return -EINVAL;
4885
4886 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4887
4888 if (!rdev->ops->get_mpp)
4889 return -EOPNOTSUPP;
4890
4891 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4892 return -EOPNOTSUPP;
4893
4894 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4895 if (err)
4896 return err;
4897
4898 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4899 if (!msg)
4900 return -ENOMEM;
4901
4902 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4903 dev, dst, mpp, &pinfo) < 0) {
4904 nlmsg_free(msg);
4905 return -ENOBUFS;
4906 }
4907
4908 return genlmsg_reply(msg, info);
4909 }
4910
4911 static int nl80211_dump_mpp(struct sk_buff *skb,
4912 struct netlink_callback *cb)
4913 {
4914 struct mpath_info pinfo;
4915 struct cfg80211_registered_device *rdev;
4916 struct wireless_dev *wdev;
4917 u8 dst[ETH_ALEN];
4918 u8 mpp[ETH_ALEN];
4919 int path_idx = cb->args[2];
4920 int err;
4921
4922 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4923 if (err)
4924 return err;
4925
4926 if (!rdev->ops->dump_mpp) {
4927 err = -EOPNOTSUPP;
4928 goto out_err;
4929 }
4930
4931 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4932 err = -EOPNOTSUPP;
4933 goto out_err;
4934 }
4935
4936 while (1) {
4937 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4938 mpp, &pinfo);
4939 if (err == -ENOENT)
4940 break;
4941 if (err)
4942 goto out_err;
4943
4944 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4945 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4946 wdev->netdev, dst, mpp,
4947 &pinfo) < 0)
4948 goto out;
4949
4950 path_idx++;
4951 }
4952
4953 out:
4954 cb->args[2] = path_idx;
4955 err = skb->len;
4956 out_err:
4957 nl80211_finish_wdev_dump(rdev);
4958 return err;
4959 }
4960
4961 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4962 {
4963 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4964 struct net_device *dev = info->user_ptr[1];
4965 struct wireless_dev *wdev = dev->ieee80211_ptr;
4966 struct bss_parameters params;
4967 int err;
4968
4969 memset(&params, 0, sizeof(params));
4970 /* default to not changing parameters */
4971 params.use_cts_prot = -1;
4972 params.use_short_preamble = -1;
4973 params.use_short_slot_time = -1;
4974 params.ap_isolate = -1;
4975 params.ht_opmode = -1;
4976 params.p2p_ctwindow = -1;
4977 params.p2p_opp_ps = -1;
4978
4979 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4980 params.use_cts_prot =
4981 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4982 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4983 params.use_short_preamble =
4984 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4985 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4986 params.use_short_slot_time =
4987 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4988 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4989 params.basic_rates =
4990 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4991 params.basic_rates_len =
4992 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4993 }
4994 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4995 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4996 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4997 params.ht_opmode =
4998 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4999
5000 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5001 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5002 return -EINVAL;
5003 params.p2p_ctwindow =
5004 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5005 if (params.p2p_ctwindow < 0)
5006 return -EINVAL;
5007 if (params.p2p_ctwindow != 0 &&
5008 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5009 return -EINVAL;
5010 }
5011
5012 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5013 u8 tmp;
5014
5015 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5016 return -EINVAL;
5017 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5018 if (tmp > 1)
5019 return -EINVAL;
5020 params.p2p_opp_ps = tmp;
5021 if (params.p2p_opp_ps &&
5022 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5023 return -EINVAL;
5024 }
5025
5026 if (!rdev->ops->change_bss)
5027 return -EOPNOTSUPP;
5028
5029 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5030 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5031 return -EOPNOTSUPP;
5032
5033 wdev_lock(wdev);
5034 err = rdev_change_bss(rdev, dev, &params);
5035 wdev_unlock(wdev);
5036
5037 return err;
5038 }
5039
5040 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5041 {
5042 char *data = NULL;
5043 bool is_indoor;
5044 enum nl80211_user_reg_hint_type user_reg_hint_type;
5045 u32 owner_nlportid;
5046
5047
5048 /*
5049 * You should only get this when cfg80211 hasn't yet initialized
5050 * completely when built-in to the kernel right between the time
5051 * window between nl80211_init() and regulatory_init(), if that is
5052 * even possible.
5053 */
5054 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5055 return -EINPROGRESS;
5056
5057 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5058 user_reg_hint_type =
5059 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5060 else
5061 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5062
5063 switch (user_reg_hint_type) {
5064 case NL80211_USER_REG_HINT_USER:
5065 case NL80211_USER_REG_HINT_CELL_BASE:
5066 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5067 return -EINVAL;
5068
5069 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5070 return regulatory_hint_user(data, user_reg_hint_type);
5071 case NL80211_USER_REG_HINT_INDOOR:
5072 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5073 owner_nlportid = info->snd_portid;
5074 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5075 } else {
5076 owner_nlportid = 0;
5077 is_indoor = true;
5078 }
5079
5080 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5081 default:
5082 return -EINVAL;
5083 }
5084 }
5085
5086 static int nl80211_get_mesh_config(struct sk_buff *skb,
5087 struct genl_info *info)
5088 {
5089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5090 struct net_device *dev = info->user_ptr[1];
5091 struct wireless_dev *wdev = dev->ieee80211_ptr;
5092 struct mesh_config cur_params;
5093 int err = 0;
5094 void *hdr;
5095 struct nlattr *pinfoattr;
5096 struct sk_buff *msg;
5097
5098 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5099 return -EOPNOTSUPP;
5100
5101 if (!rdev->ops->get_mesh_config)
5102 return -EOPNOTSUPP;
5103
5104 wdev_lock(wdev);
5105 /* If not connected, get default parameters */
5106 if (!wdev->mesh_id_len)
5107 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5108 else
5109 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5110 wdev_unlock(wdev);
5111
5112 if (err)
5113 return err;
5114
5115 /* Draw up a netlink message to send back */
5116 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5117 if (!msg)
5118 return -ENOMEM;
5119 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5120 NL80211_CMD_GET_MESH_CONFIG);
5121 if (!hdr)
5122 goto out;
5123 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5124 if (!pinfoattr)
5125 goto nla_put_failure;
5126 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5127 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5128 cur_params.dot11MeshRetryTimeout) ||
5129 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5130 cur_params.dot11MeshConfirmTimeout) ||
5131 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5132 cur_params.dot11MeshHoldingTimeout) ||
5133 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5134 cur_params.dot11MeshMaxPeerLinks) ||
5135 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5136 cur_params.dot11MeshMaxRetries) ||
5137 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5138 cur_params.dot11MeshTTL) ||
5139 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5140 cur_params.element_ttl) ||
5141 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5142 cur_params.auto_open_plinks) ||
5143 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5144 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5145 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5146 cur_params.dot11MeshHWMPmaxPREQretries) ||
5147 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5148 cur_params.path_refresh_time) ||
5149 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5150 cur_params.min_discovery_timeout) ||
5151 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5152 cur_params.dot11MeshHWMPactivePathTimeout) ||
5153 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5154 cur_params.dot11MeshHWMPpreqMinInterval) ||
5155 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5156 cur_params.dot11MeshHWMPperrMinInterval) ||
5157 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5158 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5159 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5160 cur_params.dot11MeshHWMPRootMode) ||
5161 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5162 cur_params.dot11MeshHWMPRannInterval) ||
5163 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5164 cur_params.dot11MeshGateAnnouncementProtocol) ||
5165 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5166 cur_params.dot11MeshForwarding) ||
5167 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5168 cur_params.rssi_threshold) ||
5169 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5170 cur_params.ht_opmode) ||
5171 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5172 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5173 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5174 cur_params.dot11MeshHWMProotInterval) ||
5175 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5176 cur_params.dot11MeshHWMPconfirmationInterval) ||
5177 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5178 cur_params.power_mode) ||
5179 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5180 cur_params.dot11MeshAwakeWindowDuration) ||
5181 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5182 cur_params.plink_timeout))
5183 goto nla_put_failure;
5184 nla_nest_end(msg, pinfoattr);
5185 genlmsg_end(msg, hdr);
5186 return genlmsg_reply(msg, info);
5187
5188 nla_put_failure:
5189 genlmsg_cancel(msg, hdr);
5190 out:
5191 nlmsg_free(msg);
5192 return -ENOBUFS;
5193 }
5194
5195 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5196 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5197 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5198 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5199 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5200 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5201 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5202 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5203 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5204 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5205 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5206 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5207 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5208 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5209 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5210 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5211 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5212 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5213 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5214 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5215 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5216 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5217 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5218 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5219 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5220 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5221 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5222 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5223 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5224 };
5225
5226 static const struct nla_policy
5227 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5228 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5229 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5230 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5231 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5232 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5233 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5234 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5235 .len = IEEE80211_MAX_DATA_LEN },
5236 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5237 };
5238
5239 static int nl80211_parse_mesh_config(struct genl_info *info,
5240 struct mesh_config *cfg,
5241 u32 *mask_out)
5242 {
5243 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5244 u32 mask = 0;
5245
5246 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5247 do { \
5248 if (tb[attr]) { \
5249 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5250 return -EINVAL; \
5251 cfg->param = fn(tb[attr]); \
5252 mask |= (1 << (attr - 1)); \
5253 } \
5254 } while (0)
5255
5256
5257 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5258 return -EINVAL;
5259 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5260 info->attrs[NL80211_ATTR_MESH_CONFIG],
5261 nl80211_meshconf_params_policy))
5262 return -EINVAL;
5263
5264 /* This makes sure that there aren't more than 32 mesh config
5265 * parameters (otherwise our bitfield scheme would not work.) */
5266 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5267
5268 /* Fill in the params struct */
5269 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5270 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5271 nla_get_u16);
5272 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5273 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5274 nla_get_u16);
5275 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5276 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5277 nla_get_u16);
5278 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5279 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5280 nla_get_u16);
5281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5282 mask, NL80211_MESHCONF_MAX_RETRIES,
5283 nla_get_u8);
5284 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5285 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5286 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5287 mask, NL80211_MESHCONF_ELEMENT_TTL,
5288 nla_get_u8);
5289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5290 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5291 nla_get_u8);
5292 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5293 1, 255, mask,
5294 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5295 nla_get_u32);
5296 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5297 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5298 nla_get_u8);
5299 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5300 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5301 nla_get_u32);
5302 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5303 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5304 nla_get_u16);
5305 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5306 1, 65535, mask,
5307 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5308 nla_get_u32);
5309 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5310 1, 65535, mask,
5311 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5312 nla_get_u16);
5313 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5314 1, 65535, mask,
5315 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5316 nla_get_u16);
5317 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5318 dot11MeshHWMPnetDiameterTraversalTime,
5319 1, 65535, mask,
5320 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5321 nla_get_u16);
5322 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5323 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5324 nla_get_u8);
5325 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5326 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5327 nla_get_u16);
5328 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5329 dot11MeshGateAnnouncementProtocol, 0, 1,
5330 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5331 nla_get_u8);
5332 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5333 mask, NL80211_MESHCONF_FORWARDING,
5334 nla_get_u8);
5335 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5336 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5337 nla_get_s32);
5338 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5339 mask, NL80211_MESHCONF_HT_OPMODE,
5340 nla_get_u16);
5341 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5342 1, 65535, mask,
5343 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5344 nla_get_u32);
5345 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5346 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5347 nla_get_u16);
5348 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5349 dot11MeshHWMPconfirmationInterval,
5350 1, 65535, mask,
5351 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5352 nla_get_u16);
5353 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5354 NL80211_MESH_POWER_ACTIVE,
5355 NL80211_MESH_POWER_MAX,
5356 mask, NL80211_MESHCONF_POWER_MODE,
5357 nla_get_u32);
5358 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5359 0, 65535, mask,
5360 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5361 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5362 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5363 nla_get_u32);
5364 if (mask_out)
5365 *mask_out = mask;
5366
5367 return 0;
5368
5369 #undef FILL_IN_MESH_PARAM_IF_SET
5370 }
5371
5372 static int nl80211_parse_mesh_setup(struct genl_info *info,
5373 struct mesh_setup *setup)
5374 {
5375 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5376 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5377
5378 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5379 return -EINVAL;
5380 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5381 info->attrs[NL80211_ATTR_MESH_SETUP],
5382 nl80211_mesh_setup_params_policy))
5383 return -EINVAL;
5384
5385 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5386 setup->sync_method =
5387 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5388 IEEE80211_SYNC_METHOD_VENDOR :
5389 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5390
5391 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5392 setup->path_sel_proto =
5393 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5394 IEEE80211_PATH_PROTOCOL_VENDOR :
5395 IEEE80211_PATH_PROTOCOL_HWMP;
5396
5397 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5398 setup->path_metric =
5399 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5400 IEEE80211_PATH_METRIC_VENDOR :
5401 IEEE80211_PATH_METRIC_AIRTIME;
5402
5403
5404 if (tb[NL80211_MESH_SETUP_IE]) {
5405 struct nlattr *ieattr =
5406 tb[NL80211_MESH_SETUP_IE];
5407 if (!is_valid_ie_attr(ieattr))
5408 return -EINVAL;
5409 setup->ie = nla_data(ieattr);
5410 setup->ie_len = nla_len(ieattr);
5411 }
5412 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5413 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5414 return -EINVAL;
5415 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5416 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5417 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5418 if (setup->is_secure)
5419 setup->user_mpm = true;
5420
5421 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5422 if (!setup->user_mpm)
5423 return -EINVAL;
5424 setup->auth_id =
5425 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5426 }
5427
5428 return 0;
5429 }
5430
5431 static int nl80211_update_mesh_config(struct sk_buff *skb,
5432 struct genl_info *info)
5433 {
5434 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5435 struct net_device *dev = info->user_ptr[1];
5436 struct wireless_dev *wdev = dev->ieee80211_ptr;
5437 struct mesh_config cfg;
5438 u32 mask;
5439 int err;
5440
5441 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5442 return -EOPNOTSUPP;
5443
5444 if (!rdev->ops->update_mesh_config)
5445 return -EOPNOTSUPP;
5446
5447 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5448 if (err)
5449 return err;
5450
5451 wdev_lock(wdev);
5452 if (!wdev->mesh_id_len)
5453 err = -ENOLINK;
5454
5455 if (!err)
5456 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5457
5458 wdev_unlock(wdev);
5459
5460 return err;
5461 }
5462
5463 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5464 struct sk_buff *msg)
5465 {
5466 struct nlattr *nl_reg_rules;
5467 unsigned int i;
5468
5469 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5470 (regdom->dfs_region &&
5471 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5472 goto nla_put_failure;
5473
5474 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5475 if (!nl_reg_rules)
5476 goto nla_put_failure;
5477
5478 for (i = 0; i < regdom->n_reg_rules; i++) {
5479 struct nlattr *nl_reg_rule;
5480 const struct ieee80211_reg_rule *reg_rule;
5481 const struct ieee80211_freq_range *freq_range;
5482 const struct ieee80211_power_rule *power_rule;
5483 unsigned int max_bandwidth_khz;
5484
5485 reg_rule = &regdom->reg_rules[i];
5486 freq_range = &reg_rule->freq_range;
5487 power_rule = &reg_rule->power_rule;
5488
5489 nl_reg_rule = nla_nest_start(msg, i);
5490 if (!nl_reg_rule)
5491 goto nla_put_failure;
5492
5493 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5494 if (!max_bandwidth_khz)
5495 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5496 reg_rule);
5497
5498 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5499 reg_rule->flags) ||
5500 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5501 freq_range->start_freq_khz) ||
5502 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5503 freq_range->end_freq_khz) ||
5504 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5505 max_bandwidth_khz) ||
5506 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5507 power_rule->max_antenna_gain) ||
5508 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5509 power_rule->max_eirp) ||
5510 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5511 reg_rule->dfs_cac_ms))
5512 goto nla_put_failure;
5513
5514 nla_nest_end(msg, nl_reg_rule);
5515 }
5516
5517 nla_nest_end(msg, nl_reg_rules);
5518 return 0;
5519
5520 nla_put_failure:
5521 return -EMSGSIZE;
5522 }
5523
5524 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5525 {
5526 const struct ieee80211_regdomain *regdom = NULL;
5527 struct cfg80211_registered_device *rdev;
5528 struct wiphy *wiphy = NULL;
5529 struct sk_buff *msg;
5530 void *hdr;
5531
5532 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5533 if (!msg)
5534 return -ENOBUFS;
5535
5536 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5537 NL80211_CMD_GET_REG);
5538 if (!hdr)
5539 goto put_failure;
5540
5541 if (info->attrs[NL80211_ATTR_WIPHY]) {
5542 bool self_managed;
5543
5544 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5545 if (IS_ERR(rdev)) {
5546 nlmsg_free(msg);
5547 return PTR_ERR(rdev);
5548 }
5549
5550 wiphy = &rdev->wiphy;
5551 self_managed = wiphy->regulatory_flags &
5552 REGULATORY_WIPHY_SELF_MANAGED;
5553 regdom = get_wiphy_regdom(wiphy);
5554
5555 /* a self-managed-reg device must have a private regdom */
5556 if (WARN_ON(!regdom && self_managed)) {
5557 nlmsg_free(msg);
5558 return -EINVAL;
5559 }
5560
5561 if (regdom &&
5562 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5563 goto nla_put_failure;
5564 }
5565
5566 if (!wiphy && reg_last_request_cell_base() &&
5567 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5568 NL80211_USER_REG_HINT_CELL_BASE))
5569 goto nla_put_failure;
5570
5571 rcu_read_lock();
5572
5573 if (!regdom)
5574 regdom = rcu_dereference(cfg80211_regdomain);
5575
5576 if (nl80211_put_regdom(regdom, msg))
5577 goto nla_put_failure_rcu;
5578
5579 rcu_read_unlock();
5580
5581 genlmsg_end(msg, hdr);
5582 return genlmsg_reply(msg, info);
5583
5584 nla_put_failure_rcu:
5585 rcu_read_unlock();
5586 nla_put_failure:
5587 genlmsg_cancel(msg, hdr);
5588 put_failure:
5589 nlmsg_free(msg);
5590 return -EMSGSIZE;
5591 }
5592
5593 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5594 u32 seq, int flags, struct wiphy *wiphy,
5595 const struct ieee80211_regdomain *regdom)
5596 {
5597 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5598 NL80211_CMD_GET_REG);
5599
5600 if (!hdr)
5601 return -1;
5602
5603 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5604
5605 if (nl80211_put_regdom(regdom, msg))
5606 goto nla_put_failure;
5607
5608 if (!wiphy && reg_last_request_cell_base() &&
5609 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5610 NL80211_USER_REG_HINT_CELL_BASE))
5611 goto nla_put_failure;
5612
5613 if (wiphy &&
5614 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5615 goto nla_put_failure;
5616
5617 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5618 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5619 goto nla_put_failure;
5620
5621 genlmsg_end(msg, hdr);
5622 return 0;
5623
5624 nla_put_failure:
5625 genlmsg_cancel(msg, hdr);
5626 return -EMSGSIZE;
5627 }
5628
5629 static int nl80211_get_reg_dump(struct sk_buff *skb,
5630 struct netlink_callback *cb)
5631 {
5632 const struct ieee80211_regdomain *regdom = NULL;
5633 struct cfg80211_registered_device *rdev;
5634 int err, reg_idx, start = cb->args[2];
5635
5636 rtnl_lock();
5637
5638 if (cfg80211_regdomain && start == 0) {
5639 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5640 NLM_F_MULTI, NULL,
5641 rtnl_dereference(cfg80211_regdomain));
5642 if (err < 0)
5643 goto out_err;
5644 }
5645
5646 /* the global regdom is idx 0 */
5647 reg_idx = 1;
5648 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5649 regdom = get_wiphy_regdom(&rdev->wiphy);
5650 if (!regdom)
5651 continue;
5652
5653 if (++reg_idx <= start)
5654 continue;
5655
5656 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5657 NLM_F_MULTI, &rdev->wiphy, regdom);
5658 if (err < 0) {
5659 reg_idx--;
5660 break;
5661 }
5662 }
5663
5664 cb->args[2] = reg_idx;
5665 err = skb->len;
5666 out_err:
5667 rtnl_unlock();
5668 return err;
5669 }
5670
5671 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5672 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5673 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5674 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5675 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5676 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5677 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5678 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5679 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5680 };
5681
5682 static int parse_reg_rule(struct nlattr *tb[],
5683 struct ieee80211_reg_rule *reg_rule)
5684 {
5685 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5686 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5687
5688 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5689 return -EINVAL;
5690 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5691 return -EINVAL;
5692 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5693 return -EINVAL;
5694 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5695 return -EINVAL;
5696 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5697 return -EINVAL;
5698
5699 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5700
5701 freq_range->start_freq_khz =
5702 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5703 freq_range->end_freq_khz =
5704 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5705 freq_range->max_bandwidth_khz =
5706 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5707
5708 power_rule->max_eirp =
5709 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5710
5711 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5712 power_rule->max_antenna_gain =
5713 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5714
5715 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5716 reg_rule->dfs_cac_ms =
5717 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5718
5719 return 0;
5720 }
5721
5722 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5723 {
5724 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5725 struct nlattr *nl_reg_rule;
5726 char *alpha2;
5727 int rem_reg_rules, r;
5728 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5729 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5730 struct ieee80211_regdomain *rd;
5731
5732 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5733 return -EINVAL;
5734
5735 if (!info->attrs[NL80211_ATTR_REG_RULES])
5736 return -EINVAL;
5737
5738 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5739
5740 if (info->attrs[NL80211_ATTR_DFS_REGION])
5741 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5742
5743 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5744 rem_reg_rules) {
5745 num_rules++;
5746 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5747 return -EINVAL;
5748 }
5749
5750 if (!reg_is_valid_request(alpha2))
5751 return -EINVAL;
5752
5753 size_of_regd = sizeof(struct ieee80211_regdomain) +
5754 num_rules * sizeof(struct ieee80211_reg_rule);
5755
5756 rd = kzalloc(size_of_regd, GFP_KERNEL);
5757 if (!rd)
5758 return -ENOMEM;
5759
5760 rd->n_reg_rules = num_rules;
5761 rd->alpha2[0] = alpha2[0];
5762 rd->alpha2[1] = alpha2[1];
5763
5764 /*
5765 * Disable DFS master mode if the DFS region was
5766 * not supported or known on this kernel.
5767 */
5768 if (reg_supported_dfs_region(dfs_region))
5769 rd->dfs_region = dfs_region;
5770
5771 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5772 rem_reg_rules) {
5773 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5774 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5775 reg_rule_policy);
5776 if (r)
5777 goto bad_reg;
5778 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5779 if (r)
5780 goto bad_reg;
5781
5782 rule_idx++;
5783
5784 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5785 r = -EINVAL;
5786 goto bad_reg;
5787 }
5788 }
5789
5790 r = set_regdom(rd, REGD_SOURCE_CRDA);
5791 /* set_regdom took ownership */
5792 rd = NULL;
5793
5794 bad_reg:
5795 kfree(rd);
5796 return r;
5797 }
5798 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5799
5800 static int validate_scan_freqs(struct nlattr *freqs)
5801 {
5802 struct nlattr *attr1, *attr2;
5803 int n_channels = 0, tmp1, tmp2;
5804
5805 nla_for_each_nested(attr1, freqs, tmp1) {
5806 n_channels++;
5807 /*
5808 * Some hardware has a limited channel list for
5809 * scanning, and it is pretty much nonsensical
5810 * to scan for a channel twice, so disallow that
5811 * and don't require drivers to check that the
5812 * channel list they get isn't longer than what
5813 * they can scan, as long as they can scan all
5814 * the channels they registered at once.
5815 */
5816 nla_for_each_nested(attr2, freqs, tmp2)
5817 if (attr1 != attr2 &&
5818 nla_get_u32(attr1) == nla_get_u32(attr2))
5819 return 0;
5820 }
5821
5822 return n_channels;
5823 }
5824
5825 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
5826 {
5827 return b < NUM_NL80211_BANDS && wiphy->bands[b];
5828 }
5829
5830 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
5831 struct cfg80211_bss_selection *bss_select)
5832 {
5833 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
5834 struct nlattr *nest;
5835 int err;
5836 bool found = false;
5837 int i;
5838
5839 /* only process one nested attribute */
5840 nest = nla_data(nla);
5841 if (!nla_ok(nest, nla_len(nest)))
5842 return -EINVAL;
5843
5844 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
5845 nla_len(nest), nl80211_bss_select_policy);
5846 if (err)
5847 return err;
5848
5849 /* only one attribute may be given */
5850 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
5851 if (attr[i]) {
5852 if (found)
5853 return -EINVAL;
5854 found = true;
5855 }
5856 }
5857
5858 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
5859
5860 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
5861 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
5862
5863 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
5864 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
5865 bss_select->param.band_pref =
5866 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
5867 if (!is_band_valid(wiphy, bss_select->param.band_pref))
5868 return -EINVAL;
5869 }
5870
5871 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
5872 struct nl80211_bss_select_rssi_adjust *adj_param;
5873
5874 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
5875 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
5876 bss_select->param.adjust.band = adj_param->band;
5877 bss_select->param.adjust.delta = adj_param->delta;
5878 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
5879 return -EINVAL;
5880 }
5881
5882 /* user-space did not provide behaviour attribute */
5883 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
5884 return -EINVAL;
5885
5886 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
5887 return -EINVAL;
5888
5889 return 0;
5890 }
5891
5892 static int nl80211_parse_random_mac(struct nlattr **attrs,
5893 u8 *mac_addr, u8 *mac_addr_mask)
5894 {
5895 int i;
5896
5897 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5898 eth_zero_addr(mac_addr);
5899 eth_zero_addr(mac_addr_mask);
5900 mac_addr[0] = 0x2;
5901 mac_addr_mask[0] = 0x3;
5902
5903 return 0;
5904 }
5905
5906 /* need both or none */
5907 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5908 return -EINVAL;
5909
5910 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5911 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5912
5913 /* don't allow or configure an mcast address */
5914 if (!is_multicast_ether_addr(mac_addr_mask) ||
5915 is_multicast_ether_addr(mac_addr))
5916 return -EINVAL;
5917
5918 /*
5919 * allow users to pass a MAC address that has bits set outside
5920 * of the mask, but don't bother drivers with having to deal
5921 * with such bits
5922 */
5923 for (i = 0; i < ETH_ALEN; i++)
5924 mac_addr[i] &= mac_addr_mask[i];
5925
5926 return 0;
5927 }
5928
5929 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5930 {
5931 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5932 struct wireless_dev *wdev = info->user_ptr[1];
5933 struct cfg80211_scan_request *request;
5934 struct nlattr *attr;
5935 struct wiphy *wiphy;
5936 int err, tmp, n_ssids = 0, n_channels, i;
5937 size_t ie_len;
5938
5939 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5940 return -EINVAL;
5941
5942 wiphy = &rdev->wiphy;
5943
5944 if (!rdev->ops->scan)
5945 return -EOPNOTSUPP;
5946
5947 if (rdev->scan_req || rdev->scan_msg) {
5948 err = -EBUSY;
5949 goto unlock;
5950 }
5951
5952 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5953 n_channels = validate_scan_freqs(
5954 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5955 if (!n_channels) {
5956 err = -EINVAL;
5957 goto unlock;
5958 }
5959 } else {
5960 n_channels = ieee80211_get_num_supported_channels(wiphy);
5961 }
5962
5963 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5964 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5965 n_ssids++;
5966
5967 if (n_ssids > wiphy->max_scan_ssids) {
5968 err = -EINVAL;
5969 goto unlock;
5970 }
5971
5972 if (info->attrs[NL80211_ATTR_IE])
5973 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5974 else
5975 ie_len = 0;
5976
5977 if (ie_len > wiphy->max_scan_ie_len) {
5978 err = -EINVAL;
5979 goto unlock;
5980 }
5981
5982 request = kzalloc(sizeof(*request)
5983 + sizeof(*request->ssids) * n_ssids
5984 + sizeof(*request->channels) * n_channels
5985 + ie_len, GFP_KERNEL);
5986 if (!request) {
5987 err = -ENOMEM;
5988 goto unlock;
5989 }
5990
5991 if (n_ssids)
5992 request->ssids = (void *)&request->channels[n_channels];
5993 request->n_ssids = n_ssids;
5994 if (ie_len) {
5995 if (n_ssids)
5996 request->ie = (void *)(request->ssids + n_ssids);
5997 else
5998 request->ie = (void *)(request->channels + n_channels);
5999 }
6000
6001 i = 0;
6002 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6003 /* user specified, bail out if channel not found */
6004 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6005 struct ieee80211_channel *chan;
6006
6007 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6008
6009 if (!chan) {
6010 err = -EINVAL;
6011 goto out_free;
6012 }
6013
6014 /* ignore disabled channels */
6015 if (chan->flags & IEEE80211_CHAN_DISABLED)
6016 continue;
6017
6018 request->channels[i] = chan;
6019 i++;
6020 }
6021 } else {
6022 enum nl80211_band band;
6023
6024 /* all channels */
6025 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6026 int j;
6027 if (!wiphy->bands[band])
6028 continue;
6029 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6030 struct ieee80211_channel *chan;
6031
6032 chan = &wiphy->bands[band]->channels[j];
6033
6034 if (chan->flags & IEEE80211_CHAN_DISABLED)
6035 continue;
6036
6037 request->channels[i] = chan;
6038 i++;
6039 }
6040 }
6041 }
6042
6043 if (!i) {
6044 err = -EINVAL;
6045 goto out_free;
6046 }
6047
6048 request->n_channels = i;
6049
6050 i = 0;
6051 if (n_ssids) {
6052 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6053 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6054 err = -EINVAL;
6055 goto out_free;
6056 }
6057 request->ssids[i].ssid_len = nla_len(attr);
6058 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6059 i++;
6060 }
6061 }
6062
6063 if (info->attrs[NL80211_ATTR_IE]) {
6064 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6065 memcpy((void *)request->ie,
6066 nla_data(info->attrs[NL80211_ATTR_IE]),
6067 request->ie_len);
6068 }
6069
6070 for (i = 0; i < NUM_NL80211_BANDS; i++)
6071 if (wiphy->bands[i])
6072 request->rates[i] =
6073 (1 << wiphy->bands[i]->n_bitrates) - 1;
6074
6075 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6076 nla_for_each_nested(attr,
6077 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6078 tmp) {
6079 enum nl80211_band band = nla_type(attr);
6080
6081 if (band < 0 || band >= NUM_NL80211_BANDS) {
6082 err = -EINVAL;
6083 goto out_free;
6084 }
6085
6086 if (!wiphy->bands[band])
6087 continue;
6088
6089 err = ieee80211_get_ratemask(wiphy->bands[band],
6090 nla_data(attr),
6091 nla_len(attr),
6092 &request->rates[band]);
6093 if (err)
6094 goto out_free;
6095 }
6096 }
6097
6098 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6099 request->flags = nla_get_u32(
6100 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6101 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6102 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6103 err = -EOPNOTSUPP;
6104 goto out_free;
6105 }
6106
6107 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6108 if (!(wiphy->features &
6109 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6110 err = -EOPNOTSUPP;
6111 goto out_free;
6112 }
6113
6114 if (wdev->current_bss) {
6115 err = -EOPNOTSUPP;
6116 goto out_free;
6117 }
6118
6119 err = nl80211_parse_random_mac(info->attrs,
6120 request->mac_addr,
6121 request->mac_addr_mask);
6122 if (err)
6123 goto out_free;
6124 }
6125 }
6126
6127 request->no_cck =
6128 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6129
6130 if (info->attrs[NL80211_ATTR_MAC])
6131 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6132 ETH_ALEN);
6133 else
6134 eth_broadcast_addr(request->bssid);
6135
6136 request->wdev = wdev;
6137 request->wiphy = &rdev->wiphy;
6138 request->scan_start = jiffies;
6139
6140 rdev->scan_req = request;
6141 err = rdev_scan(rdev, request);
6142
6143 if (!err) {
6144 nl80211_send_scan_start(rdev, wdev);
6145 if (wdev->netdev)
6146 dev_hold(wdev->netdev);
6147 } else {
6148 out_free:
6149 rdev->scan_req = NULL;
6150 kfree(request);
6151 }
6152
6153 unlock:
6154 return err;
6155 }
6156
6157 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6158 {
6159 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6160 struct wireless_dev *wdev = info->user_ptr[1];
6161
6162 if (!rdev->ops->abort_scan)
6163 return -EOPNOTSUPP;
6164
6165 if (rdev->scan_msg)
6166 return 0;
6167
6168 if (!rdev->scan_req)
6169 return -ENOENT;
6170
6171 rdev_abort_scan(rdev, wdev);
6172 return 0;
6173 }
6174
6175 static int
6176 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6177 struct cfg80211_sched_scan_request *request,
6178 struct nlattr **attrs)
6179 {
6180 int tmp, err, i = 0;
6181 struct nlattr *attr;
6182
6183 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6184 u32 interval;
6185
6186 /*
6187 * If scan plans are not specified,
6188 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6189 * case one scan plan will be set with the specified scan
6190 * interval and infinite number of iterations.
6191 */
6192 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6193 return -EINVAL;
6194
6195 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6196 if (!interval)
6197 return -EINVAL;
6198
6199 request->scan_plans[0].interval =
6200 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6201 if (!request->scan_plans[0].interval)
6202 return -EINVAL;
6203
6204 if (request->scan_plans[0].interval >
6205 wiphy->max_sched_scan_plan_interval)
6206 request->scan_plans[0].interval =
6207 wiphy->max_sched_scan_plan_interval;
6208
6209 return 0;
6210 }
6211
6212 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6213 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6214
6215 if (WARN_ON(i >= n_plans))
6216 return -EINVAL;
6217
6218 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6219 nla_data(attr), nla_len(attr),
6220 nl80211_plan_policy);
6221 if (err)
6222 return err;
6223
6224 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6225 return -EINVAL;
6226
6227 request->scan_plans[i].interval =
6228 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6229 if (!request->scan_plans[i].interval ||
6230 request->scan_plans[i].interval >
6231 wiphy->max_sched_scan_plan_interval)
6232 return -EINVAL;
6233
6234 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6235 request->scan_plans[i].iterations =
6236 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6237 if (!request->scan_plans[i].iterations ||
6238 (request->scan_plans[i].iterations >
6239 wiphy->max_sched_scan_plan_iterations))
6240 return -EINVAL;
6241 } else if (i < n_plans - 1) {
6242 /*
6243 * All scan plans but the last one must specify
6244 * a finite number of iterations
6245 */
6246 return -EINVAL;
6247 }
6248
6249 i++;
6250 }
6251
6252 /*
6253 * The last scan plan must not specify the number of
6254 * iterations, it is supposed to run infinitely
6255 */
6256 if (request->scan_plans[n_plans - 1].iterations)
6257 return -EINVAL;
6258
6259 return 0;
6260 }
6261
6262 static struct cfg80211_sched_scan_request *
6263 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6264 struct nlattr **attrs)
6265 {
6266 struct cfg80211_sched_scan_request *request;
6267 struct nlattr *attr;
6268 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6269 enum nl80211_band band;
6270 size_t ie_len;
6271 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6272 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6273
6274 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6275 return ERR_PTR(-EINVAL);
6276
6277 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6278 n_channels = validate_scan_freqs(
6279 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6280 if (!n_channels)
6281 return ERR_PTR(-EINVAL);
6282 } else {
6283 n_channels = ieee80211_get_num_supported_channels(wiphy);
6284 }
6285
6286 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6287 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6288 tmp)
6289 n_ssids++;
6290
6291 if (n_ssids > wiphy->max_sched_scan_ssids)
6292 return ERR_PTR(-EINVAL);
6293
6294 /*
6295 * First, count the number of 'real' matchsets. Due to an issue with
6296 * the old implementation, matchsets containing only the RSSI attribute
6297 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6298 * RSSI for all matchsets, rather than their own matchset for reporting
6299 * all APs with a strong RSSI. This is needed to be compatible with
6300 * older userspace that treated a matchset with only the RSSI as the
6301 * global RSSI for all other matchsets - if there are other matchsets.
6302 */
6303 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6304 nla_for_each_nested(attr,
6305 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6306 tmp) {
6307 struct nlattr *rssi;
6308
6309 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6310 nla_data(attr), nla_len(attr),
6311 nl80211_match_policy);
6312 if (err)
6313 return ERR_PTR(err);
6314 /* add other standalone attributes here */
6315 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6316 n_match_sets++;
6317 continue;
6318 }
6319 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6320 if (rssi)
6321 default_match_rssi = nla_get_s32(rssi);
6322 }
6323 }
6324
6325 /* However, if there's no other matchset, add the RSSI one */
6326 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6327 n_match_sets = 1;
6328
6329 if (n_match_sets > wiphy->max_match_sets)
6330 return ERR_PTR(-EINVAL);
6331
6332 if (attrs[NL80211_ATTR_IE])
6333 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6334 else
6335 ie_len = 0;
6336
6337 if (ie_len > wiphy->max_sched_scan_ie_len)
6338 return ERR_PTR(-EINVAL);
6339
6340 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6341 /*
6342 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6343 * each scan plan already specifies its own interval
6344 */
6345 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6346 return ERR_PTR(-EINVAL);
6347
6348 nla_for_each_nested(attr,
6349 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6350 n_plans++;
6351 } else {
6352 /*
6353 * The scan interval attribute is kept for backward
6354 * compatibility. If no scan plans are specified and sched scan
6355 * interval is specified, one scan plan will be set with this
6356 * scan interval and infinite number of iterations.
6357 */
6358 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6359 return ERR_PTR(-EINVAL);
6360
6361 n_plans = 1;
6362 }
6363
6364 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6365 return ERR_PTR(-EINVAL);
6366
6367 request = kzalloc(sizeof(*request)
6368 + sizeof(*request->ssids) * n_ssids
6369 + sizeof(*request->match_sets) * n_match_sets
6370 + sizeof(*request->scan_plans) * n_plans
6371 + sizeof(*request->channels) * n_channels
6372 + ie_len, GFP_KERNEL);
6373 if (!request)
6374 return ERR_PTR(-ENOMEM);
6375
6376 if (n_ssids)
6377 request->ssids = (void *)&request->channels[n_channels];
6378 request->n_ssids = n_ssids;
6379 if (ie_len) {
6380 if (n_ssids)
6381 request->ie = (void *)(request->ssids + n_ssids);
6382 else
6383 request->ie = (void *)(request->channels + n_channels);
6384 }
6385
6386 if (n_match_sets) {
6387 if (request->ie)
6388 request->match_sets = (void *)(request->ie + ie_len);
6389 else if (n_ssids)
6390 request->match_sets =
6391 (void *)(request->ssids + n_ssids);
6392 else
6393 request->match_sets =
6394 (void *)(request->channels + n_channels);
6395 }
6396 request->n_match_sets = n_match_sets;
6397
6398 if (n_match_sets)
6399 request->scan_plans = (void *)(request->match_sets +
6400 n_match_sets);
6401 else if (request->ie)
6402 request->scan_plans = (void *)(request->ie + ie_len);
6403 else if (n_ssids)
6404 request->scan_plans = (void *)(request->ssids + n_ssids);
6405 else
6406 request->scan_plans = (void *)(request->channels + n_channels);
6407
6408 request->n_scan_plans = n_plans;
6409
6410 i = 0;
6411 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6412 /* user specified, bail out if channel not found */
6413 nla_for_each_nested(attr,
6414 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6415 tmp) {
6416 struct ieee80211_channel *chan;
6417
6418 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6419
6420 if (!chan) {
6421 err = -EINVAL;
6422 goto out_free;
6423 }
6424
6425 /* ignore disabled channels */
6426 if (chan->flags & IEEE80211_CHAN_DISABLED)
6427 continue;
6428
6429 request->channels[i] = chan;
6430 i++;
6431 }
6432 } else {
6433 /* all channels */
6434 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6435 int j;
6436 if (!wiphy->bands[band])
6437 continue;
6438 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6439 struct ieee80211_channel *chan;
6440
6441 chan = &wiphy->bands[band]->channels[j];
6442
6443 if (chan->flags & IEEE80211_CHAN_DISABLED)
6444 continue;
6445
6446 request->channels[i] = chan;
6447 i++;
6448 }
6449 }
6450 }
6451
6452 if (!i) {
6453 err = -EINVAL;
6454 goto out_free;
6455 }
6456
6457 request->n_channels = i;
6458
6459 i = 0;
6460 if (n_ssids) {
6461 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6462 tmp) {
6463 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6464 err = -EINVAL;
6465 goto out_free;
6466 }
6467 request->ssids[i].ssid_len = nla_len(attr);
6468 memcpy(request->ssids[i].ssid, nla_data(attr),
6469 nla_len(attr));
6470 i++;
6471 }
6472 }
6473
6474 i = 0;
6475 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6476 nla_for_each_nested(attr,
6477 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6478 tmp) {
6479 struct nlattr *ssid, *rssi;
6480
6481 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6482 nla_data(attr), nla_len(attr),
6483 nl80211_match_policy);
6484 if (err)
6485 goto out_free;
6486 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6487 if (ssid) {
6488 if (WARN_ON(i >= n_match_sets)) {
6489 /* this indicates a programming error,
6490 * the loop above should have verified
6491 * things properly
6492 */
6493 err = -EINVAL;
6494 goto out_free;
6495 }
6496
6497 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6498 err = -EINVAL;
6499 goto out_free;
6500 }
6501 memcpy(request->match_sets[i].ssid.ssid,
6502 nla_data(ssid), nla_len(ssid));
6503 request->match_sets[i].ssid.ssid_len =
6504 nla_len(ssid);
6505 /* special attribute - old implemenation w/a */
6506 request->match_sets[i].rssi_thold =
6507 default_match_rssi;
6508 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6509 if (rssi)
6510 request->match_sets[i].rssi_thold =
6511 nla_get_s32(rssi);
6512 }
6513 i++;
6514 }
6515
6516 /* there was no other matchset, so the RSSI one is alone */
6517 if (i == 0 && n_match_sets)
6518 request->match_sets[0].rssi_thold = default_match_rssi;
6519
6520 request->min_rssi_thold = INT_MAX;
6521 for (i = 0; i < n_match_sets; i++)
6522 request->min_rssi_thold =
6523 min(request->match_sets[i].rssi_thold,
6524 request->min_rssi_thold);
6525 } else {
6526 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6527 }
6528
6529 if (ie_len) {
6530 request->ie_len = ie_len;
6531 memcpy((void *)request->ie,
6532 nla_data(attrs[NL80211_ATTR_IE]),
6533 request->ie_len);
6534 }
6535
6536 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6537 request->flags = nla_get_u32(
6538 attrs[NL80211_ATTR_SCAN_FLAGS]);
6539 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6540 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6541 err = -EOPNOTSUPP;
6542 goto out_free;
6543 }
6544
6545 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6546 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6547
6548 if (!wdev) /* must be net-detect */
6549 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6550
6551 if (!(wiphy->features & flg)) {
6552 err = -EOPNOTSUPP;
6553 goto out_free;
6554 }
6555
6556 if (wdev && wdev->current_bss) {
6557 err = -EOPNOTSUPP;
6558 goto out_free;
6559 }
6560
6561 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6562 request->mac_addr_mask);
6563 if (err)
6564 goto out_free;
6565 }
6566 }
6567
6568 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6569 request->delay =
6570 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6571
6572 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6573 if (err)
6574 goto out_free;
6575
6576 request->scan_start = jiffies;
6577
6578 return request;
6579
6580 out_free:
6581 kfree(request);
6582 return ERR_PTR(err);
6583 }
6584
6585 static int nl80211_start_sched_scan(struct sk_buff *skb,
6586 struct genl_info *info)
6587 {
6588 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6589 struct net_device *dev = info->user_ptr[1];
6590 struct wireless_dev *wdev = dev->ieee80211_ptr;
6591 struct cfg80211_sched_scan_request *sched_scan_req;
6592 int err;
6593
6594 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6595 !rdev->ops->sched_scan_start)
6596 return -EOPNOTSUPP;
6597
6598 if (rdev->sched_scan_req)
6599 return -EINPROGRESS;
6600
6601 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6602 info->attrs);
6603
6604 err = PTR_ERR_OR_ZERO(sched_scan_req);
6605 if (err)
6606 goto out_err;
6607
6608 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6609 if (err)
6610 goto out_free;
6611
6612 sched_scan_req->dev = dev;
6613 sched_scan_req->wiphy = &rdev->wiphy;
6614
6615 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6616 sched_scan_req->owner_nlportid = info->snd_portid;
6617
6618 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6619
6620 nl80211_send_sched_scan(rdev, dev,
6621 NL80211_CMD_START_SCHED_SCAN);
6622 return 0;
6623
6624 out_free:
6625 kfree(sched_scan_req);
6626 out_err:
6627 return err;
6628 }
6629
6630 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6631 struct genl_info *info)
6632 {
6633 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6634
6635 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6636 !rdev->ops->sched_scan_stop)
6637 return -EOPNOTSUPP;
6638
6639 return __cfg80211_stop_sched_scan(rdev, false);
6640 }
6641
6642 static int nl80211_start_radar_detection(struct sk_buff *skb,
6643 struct genl_info *info)
6644 {
6645 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6646 struct net_device *dev = info->user_ptr[1];
6647 struct wireless_dev *wdev = dev->ieee80211_ptr;
6648 struct cfg80211_chan_def chandef;
6649 enum nl80211_dfs_regions dfs_region;
6650 unsigned int cac_time_ms;
6651 int err;
6652
6653 dfs_region = reg_get_dfs_region(wdev->wiphy);
6654 if (dfs_region == NL80211_DFS_UNSET)
6655 return -EINVAL;
6656
6657 err = nl80211_parse_chandef(rdev, info, &chandef);
6658 if (err)
6659 return err;
6660
6661 if (netif_carrier_ok(dev))
6662 return -EBUSY;
6663
6664 if (wdev->cac_started)
6665 return -EBUSY;
6666
6667 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6668 wdev->iftype);
6669 if (err < 0)
6670 return err;
6671
6672 if (err == 0)
6673 return -EINVAL;
6674
6675 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6676 return -EINVAL;
6677
6678 if (!rdev->ops->start_radar_detection)
6679 return -EOPNOTSUPP;
6680
6681 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6682 if (WARN_ON(!cac_time_ms))
6683 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6684
6685 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6686 if (!err) {
6687 wdev->chandef = chandef;
6688 wdev->cac_started = true;
6689 wdev->cac_start_time = jiffies;
6690 wdev->cac_time_ms = cac_time_ms;
6691 }
6692 return err;
6693 }
6694
6695 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6696 {
6697 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6698 struct net_device *dev = info->user_ptr[1];
6699 struct wireless_dev *wdev = dev->ieee80211_ptr;
6700 struct cfg80211_csa_settings params;
6701 /* csa_attrs is defined static to avoid waste of stack size - this
6702 * function is called under RTNL lock, so this should not be a problem.
6703 */
6704 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6705 int err;
6706 bool need_new_beacon = false;
6707 int len, i;
6708 u32 cs_count;
6709
6710 if (!rdev->ops->channel_switch ||
6711 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6712 return -EOPNOTSUPP;
6713
6714 switch (dev->ieee80211_ptr->iftype) {
6715 case NL80211_IFTYPE_AP:
6716 case NL80211_IFTYPE_P2P_GO:
6717 need_new_beacon = true;
6718
6719 /* useless if AP is not running */
6720 if (!wdev->beacon_interval)
6721 return -ENOTCONN;
6722 break;
6723 case NL80211_IFTYPE_ADHOC:
6724 if (!wdev->ssid_len)
6725 return -ENOTCONN;
6726 break;
6727 case NL80211_IFTYPE_MESH_POINT:
6728 if (!wdev->mesh_id_len)
6729 return -ENOTCONN;
6730 break;
6731 default:
6732 return -EOPNOTSUPP;
6733 }
6734
6735 memset(&params, 0, sizeof(params));
6736
6737 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6738 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6739 return -EINVAL;
6740
6741 /* only important for AP, IBSS and mesh create IEs internally */
6742 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6743 return -EINVAL;
6744
6745 /* Even though the attribute is u32, the specification says
6746 * u8, so let's make sure we don't overflow.
6747 */
6748 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6749 if (cs_count > 255)
6750 return -EINVAL;
6751
6752 params.count = cs_count;
6753
6754 if (!need_new_beacon)
6755 goto skip_beacons;
6756
6757 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6758 if (err)
6759 return err;
6760
6761 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6762 info->attrs[NL80211_ATTR_CSA_IES],
6763 nl80211_policy);
6764 if (err)
6765 return err;
6766
6767 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6768 if (err)
6769 return err;
6770
6771 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6772 return -EINVAL;
6773
6774 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6775 if (!len || (len % sizeof(u16)))
6776 return -EINVAL;
6777
6778 params.n_counter_offsets_beacon = len / sizeof(u16);
6779 if (rdev->wiphy.max_num_csa_counters &&
6780 (params.n_counter_offsets_beacon >
6781 rdev->wiphy.max_num_csa_counters))
6782 return -EINVAL;
6783
6784 params.counter_offsets_beacon =
6785 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6786
6787 /* sanity checks - counters should fit and be the same */
6788 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6789 u16 offset = params.counter_offsets_beacon[i];
6790
6791 if (offset >= params.beacon_csa.tail_len)
6792 return -EINVAL;
6793
6794 if (params.beacon_csa.tail[offset] != params.count)
6795 return -EINVAL;
6796 }
6797
6798 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6799 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6800 if (!len || (len % sizeof(u16)))
6801 return -EINVAL;
6802
6803 params.n_counter_offsets_presp = len / sizeof(u16);
6804 if (rdev->wiphy.max_num_csa_counters &&
6805 (params.n_counter_offsets_beacon >
6806 rdev->wiphy.max_num_csa_counters))
6807 return -EINVAL;
6808
6809 params.counter_offsets_presp =
6810 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6811
6812 /* sanity checks - counters should fit and be the same */
6813 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6814 u16 offset = params.counter_offsets_presp[i];
6815
6816 if (offset >= params.beacon_csa.probe_resp_len)
6817 return -EINVAL;
6818
6819 if (params.beacon_csa.probe_resp[offset] !=
6820 params.count)
6821 return -EINVAL;
6822 }
6823 }
6824
6825 skip_beacons:
6826 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6827 if (err)
6828 return err;
6829
6830 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6831 wdev->iftype))
6832 return -EINVAL;
6833
6834 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6835 &params.chandef,
6836 wdev->iftype);
6837 if (err < 0)
6838 return err;
6839
6840 if (err > 0)
6841 params.radar_required = true;
6842
6843 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6844 params.block_tx = true;
6845
6846 wdev_lock(wdev);
6847 err = rdev_channel_switch(rdev, dev, &params);
6848 wdev_unlock(wdev);
6849
6850 return err;
6851 }
6852
6853 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6854 u32 seq, int flags,
6855 struct cfg80211_registered_device *rdev,
6856 struct wireless_dev *wdev,
6857 struct cfg80211_internal_bss *intbss)
6858 {
6859 struct cfg80211_bss *res = &intbss->pub;
6860 const struct cfg80211_bss_ies *ies;
6861 void *hdr;
6862 struct nlattr *bss;
6863
6864 ASSERT_WDEV_LOCK(wdev);
6865
6866 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6867 NL80211_CMD_NEW_SCAN_RESULTS);
6868 if (!hdr)
6869 return -1;
6870
6871 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6872
6873 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6874 goto nla_put_failure;
6875 if (wdev->netdev &&
6876 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6877 goto nla_put_failure;
6878 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
6879 NL80211_ATTR_PAD))
6880 goto nla_put_failure;
6881
6882 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6883 if (!bss)
6884 goto nla_put_failure;
6885 if ((!is_zero_ether_addr(res->bssid) &&
6886 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6887 goto nla_put_failure;
6888
6889 rcu_read_lock();
6890 /* indicate whether we have probe response data or not */
6891 if (rcu_access_pointer(res->proberesp_ies) &&
6892 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6893 goto fail_unlock_rcu;
6894
6895 /* this pointer prefers to be pointed to probe response data
6896 * but is always valid
6897 */
6898 ies = rcu_dereference(res->ies);
6899 if (ies) {
6900 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
6901 NL80211_BSS_PAD))
6902 goto fail_unlock_rcu;
6903 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6904 ies->len, ies->data))
6905 goto fail_unlock_rcu;
6906 }
6907
6908 /* and this pointer is always (unless driver didn't know) beacon data */
6909 ies = rcu_dereference(res->beacon_ies);
6910 if (ies && ies->from_beacon) {
6911 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
6912 NL80211_BSS_PAD))
6913 goto fail_unlock_rcu;
6914 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6915 ies->len, ies->data))
6916 goto fail_unlock_rcu;
6917 }
6918 rcu_read_unlock();
6919
6920 if (res->beacon_interval &&
6921 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6922 goto nla_put_failure;
6923 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6924 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6925 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6926 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6927 jiffies_to_msecs(jiffies - intbss->ts)))
6928 goto nla_put_failure;
6929
6930 if (intbss->ts_boottime &&
6931 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
6932 intbss->ts_boottime, NL80211_BSS_PAD))
6933 goto nla_put_failure;
6934
6935 switch (rdev->wiphy.signal_type) {
6936 case CFG80211_SIGNAL_TYPE_MBM:
6937 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6938 goto nla_put_failure;
6939 break;
6940 case CFG80211_SIGNAL_TYPE_UNSPEC:
6941 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6942 goto nla_put_failure;
6943 break;
6944 default:
6945 break;
6946 }
6947
6948 switch (wdev->iftype) {
6949 case NL80211_IFTYPE_P2P_CLIENT:
6950 case NL80211_IFTYPE_STATION:
6951 if (intbss == wdev->current_bss &&
6952 nla_put_u32(msg, NL80211_BSS_STATUS,
6953 NL80211_BSS_STATUS_ASSOCIATED))
6954 goto nla_put_failure;
6955 break;
6956 case NL80211_IFTYPE_ADHOC:
6957 if (intbss == wdev->current_bss &&
6958 nla_put_u32(msg, NL80211_BSS_STATUS,
6959 NL80211_BSS_STATUS_IBSS_JOINED))
6960 goto nla_put_failure;
6961 break;
6962 default:
6963 break;
6964 }
6965
6966 nla_nest_end(msg, bss);
6967
6968 genlmsg_end(msg, hdr);
6969 return 0;
6970
6971 fail_unlock_rcu:
6972 rcu_read_unlock();
6973 nla_put_failure:
6974 genlmsg_cancel(msg, hdr);
6975 return -EMSGSIZE;
6976 }
6977
6978 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6979 {
6980 struct cfg80211_registered_device *rdev;
6981 struct cfg80211_internal_bss *scan;
6982 struct wireless_dev *wdev;
6983 int start = cb->args[2], idx = 0;
6984 int err;
6985
6986 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6987 if (err)
6988 return err;
6989
6990 wdev_lock(wdev);
6991 spin_lock_bh(&rdev->bss_lock);
6992 cfg80211_bss_expire(rdev);
6993
6994 cb->seq = rdev->bss_generation;
6995
6996 list_for_each_entry(scan, &rdev->bss_list, list) {
6997 if (++idx <= start)
6998 continue;
6999 if (nl80211_send_bss(skb, cb,
7000 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7001 rdev, wdev, scan) < 0) {
7002 idx--;
7003 break;
7004 }
7005 }
7006
7007 spin_unlock_bh(&rdev->bss_lock);
7008 wdev_unlock(wdev);
7009
7010 cb->args[2] = idx;
7011 nl80211_finish_wdev_dump(rdev);
7012
7013 return skb->len;
7014 }
7015
7016 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7017 int flags, struct net_device *dev,
7018 bool allow_radio_stats,
7019 struct survey_info *survey)
7020 {
7021 void *hdr;
7022 struct nlattr *infoattr;
7023
7024 /* skip radio stats if userspace didn't request them */
7025 if (!survey->channel && !allow_radio_stats)
7026 return 0;
7027
7028 hdr = nl80211hdr_put(msg, portid, seq, flags,
7029 NL80211_CMD_NEW_SURVEY_RESULTS);
7030 if (!hdr)
7031 return -ENOMEM;
7032
7033 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7034 goto nla_put_failure;
7035
7036 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7037 if (!infoattr)
7038 goto nla_put_failure;
7039
7040 if (survey->channel &&
7041 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7042 survey->channel->center_freq))
7043 goto nla_put_failure;
7044
7045 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7046 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7047 goto nla_put_failure;
7048 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7049 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7050 goto nla_put_failure;
7051 if ((survey->filled & SURVEY_INFO_TIME) &&
7052 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7053 survey->time, NL80211_SURVEY_INFO_PAD))
7054 goto nla_put_failure;
7055 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7056 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7057 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7058 goto nla_put_failure;
7059 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7060 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7061 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7062 goto nla_put_failure;
7063 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7064 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7065 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7066 goto nla_put_failure;
7067 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7068 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7069 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7070 goto nla_put_failure;
7071 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7072 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7073 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7074 goto nla_put_failure;
7075
7076 nla_nest_end(msg, infoattr);
7077
7078 genlmsg_end(msg, hdr);
7079 return 0;
7080
7081 nla_put_failure:
7082 genlmsg_cancel(msg, hdr);
7083 return -EMSGSIZE;
7084 }
7085
7086 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7087 {
7088 struct survey_info survey;
7089 struct cfg80211_registered_device *rdev;
7090 struct wireless_dev *wdev;
7091 int survey_idx = cb->args[2];
7092 int res;
7093 bool radio_stats;
7094
7095 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7096 if (res)
7097 return res;
7098
7099 /* prepare_wdev_dump parsed the attributes */
7100 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7101
7102 if (!wdev->netdev) {
7103 res = -EINVAL;
7104 goto out_err;
7105 }
7106
7107 if (!rdev->ops->dump_survey) {
7108 res = -EOPNOTSUPP;
7109 goto out_err;
7110 }
7111
7112 while (1) {
7113 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7114 if (res == -ENOENT)
7115 break;
7116 if (res)
7117 goto out_err;
7118
7119 /* don't send disabled channels, but do send non-channel data */
7120 if (survey.channel &&
7121 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7122 survey_idx++;
7123 continue;
7124 }
7125
7126 if (nl80211_send_survey(skb,
7127 NETLINK_CB(cb->skb).portid,
7128 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7129 wdev->netdev, radio_stats, &survey) < 0)
7130 goto out;
7131 survey_idx++;
7132 }
7133
7134 out:
7135 cb->args[2] = survey_idx;
7136 res = skb->len;
7137 out_err:
7138 nl80211_finish_wdev_dump(rdev);
7139 return res;
7140 }
7141
7142 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7143 {
7144 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7145 NL80211_WPA_VERSION_2));
7146 }
7147
7148 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7149 {
7150 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7151 struct net_device *dev = info->user_ptr[1];
7152 struct ieee80211_channel *chan;
7153 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7154 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7155 enum nl80211_auth_type auth_type;
7156 struct key_parse key;
7157 bool local_state_change;
7158
7159 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7160 return -EINVAL;
7161
7162 if (!info->attrs[NL80211_ATTR_MAC])
7163 return -EINVAL;
7164
7165 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7166 return -EINVAL;
7167
7168 if (!info->attrs[NL80211_ATTR_SSID])
7169 return -EINVAL;
7170
7171 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7172 return -EINVAL;
7173
7174 err = nl80211_parse_key(info, &key);
7175 if (err)
7176 return err;
7177
7178 if (key.idx >= 0) {
7179 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7180 return -EINVAL;
7181 if (!key.p.key || !key.p.key_len)
7182 return -EINVAL;
7183 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7184 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7185 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7186 key.p.key_len != WLAN_KEY_LEN_WEP104))
7187 return -EINVAL;
7188 if (key.idx > 4)
7189 return -EINVAL;
7190 } else {
7191 key.p.key_len = 0;
7192 key.p.key = NULL;
7193 }
7194
7195 if (key.idx >= 0) {
7196 int i;
7197 bool ok = false;
7198 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7199 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7200 ok = true;
7201 break;
7202 }
7203 }
7204 if (!ok)
7205 return -EINVAL;
7206 }
7207
7208 if (!rdev->ops->auth)
7209 return -EOPNOTSUPP;
7210
7211 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7212 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7213 return -EOPNOTSUPP;
7214
7215 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7216 chan = nl80211_get_valid_chan(&rdev->wiphy,
7217 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7218 if (!chan)
7219 return -EINVAL;
7220
7221 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7222 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7223
7224 if (info->attrs[NL80211_ATTR_IE]) {
7225 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7226 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7227 }
7228
7229 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7230 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7231 return -EINVAL;
7232
7233 if (auth_type == NL80211_AUTHTYPE_SAE &&
7234 !info->attrs[NL80211_ATTR_SAE_DATA])
7235 return -EINVAL;
7236
7237 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7238 if (auth_type != NL80211_AUTHTYPE_SAE)
7239 return -EINVAL;
7240 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7241 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7242 /* need to include at least Auth Transaction and Status Code */
7243 if (sae_data_len < 4)
7244 return -EINVAL;
7245 }
7246
7247 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7248
7249 /*
7250 * Since we no longer track auth state, ignore
7251 * requests to only change local state.
7252 */
7253 if (local_state_change)
7254 return 0;
7255
7256 wdev_lock(dev->ieee80211_ptr);
7257 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7258 ssid, ssid_len, ie, ie_len,
7259 key.p.key, key.p.key_len, key.idx,
7260 sae_data, sae_data_len);
7261 wdev_unlock(dev->ieee80211_ptr);
7262 return err;
7263 }
7264
7265 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7266 struct genl_info *info,
7267 struct cfg80211_crypto_settings *settings,
7268 int cipher_limit)
7269 {
7270 memset(settings, 0, sizeof(*settings));
7271
7272 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7273
7274 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7275 u16 proto;
7276 proto = nla_get_u16(
7277 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7278 settings->control_port_ethertype = cpu_to_be16(proto);
7279 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7280 proto != ETH_P_PAE)
7281 return -EINVAL;
7282 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7283 settings->control_port_no_encrypt = true;
7284 } else
7285 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7286
7287 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7288 void *data;
7289 int len, i;
7290
7291 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7292 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7293 settings->n_ciphers_pairwise = len / sizeof(u32);
7294
7295 if (len % sizeof(u32))
7296 return -EINVAL;
7297
7298 if (settings->n_ciphers_pairwise > cipher_limit)
7299 return -EINVAL;
7300
7301 memcpy(settings->ciphers_pairwise, data, len);
7302
7303 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7304 if (!cfg80211_supported_cipher_suite(
7305 &rdev->wiphy,
7306 settings->ciphers_pairwise[i]))
7307 return -EINVAL;
7308 }
7309
7310 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7311 settings->cipher_group =
7312 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7313 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7314 settings->cipher_group))
7315 return -EINVAL;
7316 }
7317
7318 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7319 settings->wpa_versions =
7320 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7321 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7322 return -EINVAL;
7323 }
7324
7325 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7326 void *data;
7327 int len;
7328
7329 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7330 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7331 settings->n_akm_suites = len / sizeof(u32);
7332
7333 if (len % sizeof(u32))
7334 return -EINVAL;
7335
7336 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7337 return -EINVAL;
7338
7339 memcpy(settings->akm_suites, data, len);
7340 }
7341
7342 return 0;
7343 }
7344
7345 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7346 {
7347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7348 struct net_device *dev = info->user_ptr[1];
7349 struct ieee80211_channel *chan;
7350 struct cfg80211_assoc_request req = {};
7351 const u8 *bssid, *ssid;
7352 int err, ssid_len = 0;
7353
7354 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7355 return -EINVAL;
7356
7357 if (!info->attrs[NL80211_ATTR_MAC] ||
7358 !info->attrs[NL80211_ATTR_SSID] ||
7359 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7360 return -EINVAL;
7361
7362 if (!rdev->ops->assoc)
7363 return -EOPNOTSUPP;
7364
7365 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7366 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7367 return -EOPNOTSUPP;
7368
7369 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7370
7371 chan = nl80211_get_valid_chan(&rdev->wiphy,
7372 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7373 if (!chan)
7374 return -EINVAL;
7375
7376 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7377 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7378
7379 if (info->attrs[NL80211_ATTR_IE]) {
7380 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7381 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7382 }
7383
7384 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7385 enum nl80211_mfp mfp =
7386 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7387 if (mfp == NL80211_MFP_REQUIRED)
7388 req.use_mfp = true;
7389 else if (mfp != NL80211_MFP_NO)
7390 return -EINVAL;
7391 }
7392
7393 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7394 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7395
7396 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7397 req.flags |= ASSOC_REQ_DISABLE_HT;
7398
7399 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7400 memcpy(&req.ht_capa_mask,
7401 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7402 sizeof(req.ht_capa_mask));
7403
7404 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7405 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7406 return -EINVAL;
7407 memcpy(&req.ht_capa,
7408 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7409 sizeof(req.ht_capa));
7410 }
7411
7412 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7413 req.flags |= ASSOC_REQ_DISABLE_VHT;
7414
7415 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7416 memcpy(&req.vht_capa_mask,
7417 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7418 sizeof(req.vht_capa_mask));
7419
7420 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7421 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7422 return -EINVAL;
7423 memcpy(&req.vht_capa,
7424 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7425 sizeof(req.vht_capa));
7426 }
7427
7428 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7429 if (!((rdev->wiphy.features &
7430 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7431 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7432 !wiphy_ext_feature_isset(&rdev->wiphy,
7433 NL80211_EXT_FEATURE_RRM))
7434 return -EINVAL;
7435 req.flags |= ASSOC_REQ_USE_RRM;
7436 }
7437
7438 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7439 if (!err) {
7440 wdev_lock(dev->ieee80211_ptr);
7441 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7442 ssid, ssid_len, &req);
7443 wdev_unlock(dev->ieee80211_ptr);
7444 }
7445
7446 return err;
7447 }
7448
7449 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7450 {
7451 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7452 struct net_device *dev = info->user_ptr[1];
7453 const u8 *ie = NULL, *bssid;
7454 int ie_len = 0, err;
7455 u16 reason_code;
7456 bool local_state_change;
7457
7458 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7459 return -EINVAL;
7460
7461 if (!info->attrs[NL80211_ATTR_MAC])
7462 return -EINVAL;
7463
7464 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7465 return -EINVAL;
7466
7467 if (!rdev->ops->deauth)
7468 return -EOPNOTSUPP;
7469
7470 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7471 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7472 return -EOPNOTSUPP;
7473
7474 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7475
7476 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7477 if (reason_code == 0) {
7478 /* Reason Code 0 is reserved */
7479 return -EINVAL;
7480 }
7481
7482 if (info->attrs[NL80211_ATTR_IE]) {
7483 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7484 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7485 }
7486
7487 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7488
7489 wdev_lock(dev->ieee80211_ptr);
7490 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7491 local_state_change);
7492 wdev_unlock(dev->ieee80211_ptr);
7493 return err;
7494 }
7495
7496 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7497 {
7498 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7499 struct net_device *dev = info->user_ptr[1];
7500 const u8 *ie = NULL, *bssid;
7501 int ie_len = 0, err;
7502 u16 reason_code;
7503 bool local_state_change;
7504
7505 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7506 return -EINVAL;
7507
7508 if (!info->attrs[NL80211_ATTR_MAC])
7509 return -EINVAL;
7510
7511 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7512 return -EINVAL;
7513
7514 if (!rdev->ops->disassoc)
7515 return -EOPNOTSUPP;
7516
7517 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7518 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7519 return -EOPNOTSUPP;
7520
7521 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7522
7523 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7524 if (reason_code == 0) {
7525 /* Reason Code 0 is reserved */
7526 return -EINVAL;
7527 }
7528
7529 if (info->attrs[NL80211_ATTR_IE]) {
7530 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7531 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7532 }
7533
7534 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7535
7536 wdev_lock(dev->ieee80211_ptr);
7537 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7538 local_state_change);
7539 wdev_unlock(dev->ieee80211_ptr);
7540 return err;
7541 }
7542
7543 static bool
7544 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7545 int mcast_rate[NUM_NL80211_BANDS],
7546 int rateval)
7547 {
7548 struct wiphy *wiphy = &rdev->wiphy;
7549 bool found = false;
7550 int band, i;
7551
7552 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7553 struct ieee80211_supported_band *sband;
7554
7555 sband = wiphy->bands[band];
7556 if (!sband)
7557 continue;
7558
7559 for (i = 0; i < sband->n_bitrates; i++) {
7560 if (sband->bitrates[i].bitrate == rateval) {
7561 mcast_rate[band] = i + 1;
7562 found = true;
7563 break;
7564 }
7565 }
7566 }
7567
7568 return found;
7569 }
7570
7571 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7572 {
7573 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7574 struct net_device *dev = info->user_ptr[1];
7575 struct cfg80211_ibss_params ibss;
7576 struct wiphy *wiphy;
7577 struct cfg80211_cached_keys *connkeys = NULL;
7578 int err;
7579
7580 memset(&ibss, 0, sizeof(ibss));
7581
7582 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7583 return -EINVAL;
7584
7585 if (!info->attrs[NL80211_ATTR_SSID] ||
7586 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7587 return -EINVAL;
7588
7589 ibss.beacon_interval = 100;
7590
7591 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7592 ibss.beacon_interval =
7593 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7594 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7595 return -EINVAL;
7596 }
7597
7598 if (!rdev->ops->join_ibss)
7599 return -EOPNOTSUPP;
7600
7601 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7602 return -EOPNOTSUPP;
7603
7604 wiphy = &rdev->wiphy;
7605
7606 if (info->attrs[NL80211_ATTR_MAC]) {
7607 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7608
7609 if (!is_valid_ether_addr(ibss.bssid))
7610 return -EINVAL;
7611 }
7612 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7613 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7614
7615 if (info->attrs[NL80211_ATTR_IE]) {
7616 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7617 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7618 }
7619
7620 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7621 if (err)
7622 return err;
7623
7624 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7625 NL80211_IFTYPE_ADHOC))
7626 return -EINVAL;
7627
7628 switch (ibss.chandef.width) {
7629 case NL80211_CHAN_WIDTH_5:
7630 case NL80211_CHAN_WIDTH_10:
7631 case NL80211_CHAN_WIDTH_20_NOHT:
7632 break;
7633 case NL80211_CHAN_WIDTH_20:
7634 case NL80211_CHAN_WIDTH_40:
7635 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7636 return -EINVAL;
7637 break;
7638 case NL80211_CHAN_WIDTH_80:
7639 case NL80211_CHAN_WIDTH_80P80:
7640 case NL80211_CHAN_WIDTH_160:
7641 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7642 return -EINVAL;
7643 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7644 NL80211_EXT_FEATURE_VHT_IBSS))
7645 return -EINVAL;
7646 break;
7647 default:
7648 return -EINVAL;
7649 }
7650
7651 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7652 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7653
7654 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7655 u8 *rates =
7656 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7657 int n_rates =
7658 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7659 struct ieee80211_supported_band *sband =
7660 wiphy->bands[ibss.chandef.chan->band];
7661
7662 err = ieee80211_get_ratemask(sband, rates, n_rates,
7663 &ibss.basic_rates);
7664 if (err)
7665 return err;
7666 }
7667
7668 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7669 memcpy(&ibss.ht_capa_mask,
7670 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7671 sizeof(ibss.ht_capa_mask));
7672
7673 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7674 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7675 return -EINVAL;
7676 memcpy(&ibss.ht_capa,
7677 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7678 sizeof(ibss.ht_capa));
7679 }
7680
7681 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7682 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7683 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7684 return -EINVAL;
7685
7686 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7687 bool no_ht = false;
7688
7689 connkeys = nl80211_parse_connkeys(rdev,
7690 info->attrs[NL80211_ATTR_KEYS],
7691 &no_ht);
7692 if (IS_ERR(connkeys))
7693 return PTR_ERR(connkeys);
7694
7695 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7696 no_ht) {
7697 kzfree(connkeys);
7698 return -EINVAL;
7699 }
7700 }
7701
7702 ibss.control_port =
7703 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7704
7705 ibss.userspace_handles_dfs =
7706 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7707
7708 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7709 if (err)
7710 kzfree(connkeys);
7711 return err;
7712 }
7713
7714 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7715 {
7716 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7717 struct net_device *dev = info->user_ptr[1];
7718
7719 if (!rdev->ops->leave_ibss)
7720 return -EOPNOTSUPP;
7721
7722 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7723 return -EOPNOTSUPP;
7724
7725 return cfg80211_leave_ibss(rdev, dev, false);
7726 }
7727
7728 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7729 {
7730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7731 struct net_device *dev = info->user_ptr[1];
7732 int mcast_rate[NUM_NL80211_BANDS];
7733 u32 nla_rate;
7734 int err;
7735
7736 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7737 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7738 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7739 return -EOPNOTSUPP;
7740
7741 if (!rdev->ops->set_mcast_rate)
7742 return -EOPNOTSUPP;
7743
7744 memset(mcast_rate, 0, sizeof(mcast_rate));
7745
7746 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7747 return -EINVAL;
7748
7749 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7750 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7751 return -EINVAL;
7752
7753 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7754
7755 return err;
7756 }
7757
7758 static struct sk_buff *
7759 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7760 struct wireless_dev *wdev, int approxlen,
7761 u32 portid, u32 seq, enum nl80211_commands cmd,
7762 enum nl80211_attrs attr,
7763 const struct nl80211_vendor_cmd_info *info,
7764 gfp_t gfp)
7765 {
7766 struct sk_buff *skb;
7767 void *hdr;
7768 struct nlattr *data;
7769
7770 skb = nlmsg_new(approxlen + 100, gfp);
7771 if (!skb)
7772 return NULL;
7773
7774 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7775 if (!hdr) {
7776 kfree_skb(skb);
7777 return NULL;
7778 }
7779
7780 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7781 goto nla_put_failure;
7782
7783 if (info) {
7784 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7785 info->vendor_id))
7786 goto nla_put_failure;
7787 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7788 info->subcmd))
7789 goto nla_put_failure;
7790 }
7791
7792 if (wdev) {
7793 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
7794 wdev_id(wdev), NL80211_ATTR_PAD))
7795 goto nla_put_failure;
7796 if (wdev->netdev &&
7797 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7798 wdev->netdev->ifindex))
7799 goto nla_put_failure;
7800 }
7801
7802 data = nla_nest_start(skb, attr);
7803
7804 ((void **)skb->cb)[0] = rdev;
7805 ((void **)skb->cb)[1] = hdr;
7806 ((void **)skb->cb)[2] = data;
7807
7808 return skb;
7809
7810 nla_put_failure:
7811 kfree_skb(skb);
7812 return NULL;
7813 }
7814
7815 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7816 struct wireless_dev *wdev,
7817 enum nl80211_commands cmd,
7818 enum nl80211_attrs attr,
7819 int vendor_event_idx,
7820 int approxlen, gfp_t gfp)
7821 {
7822 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7823 const struct nl80211_vendor_cmd_info *info;
7824
7825 switch (cmd) {
7826 case NL80211_CMD_TESTMODE:
7827 if (WARN_ON(vendor_event_idx != -1))
7828 return NULL;
7829 info = NULL;
7830 break;
7831 case NL80211_CMD_VENDOR:
7832 if (WARN_ON(vendor_event_idx < 0 ||
7833 vendor_event_idx >= wiphy->n_vendor_events))
7834 return NULL;
7835 info = &wiphy->vendor_events[vendor_event_idx];
7836 break;
7837 default:
7838 WARN_ON(1);
7839 return NULL;
7840 }
7841
7842 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7843 cmd, attr, info, gfp);
7844 }
7845 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7846
7847 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7848 {
7849 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7850 void *hdr = ((void **)skb->cb)[1];
7851 struct nlattr *data = ((void **)skb->cb)[2];
7852 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7853
7854 /* clear CB data for netlink core to own from now on */
7855 memset(skb->cb, 0, sizeof(skb->cb));
7856
7857 nla_nest_end(skb, data);
7858 genlmsg_end(skb, hdr);
7859
7860 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7861 mcgrp = NL80211_MCGRP_VENDOR;
7862
7863 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7864 mcgrp, gfp);
7865 }
7866 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7867
7868 #ifdef CONFIG_NL80211_TESTMODE
7869 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7870 {
7871 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7872 struct wireless_dev *wdev =
7873 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7874 int err;
7875
7876 if (!rdev->ops->testmode_cmd)
7877 return -EOPNOTSUPP;
7878
7879 if (IS_ERR(wdev)) {
7880 err = PTR_ERR(wdev);
7881 if (err != -EINVAL)
7882 return err;
7883 wdev = NULL;
7884 } else if (wdev->wiphy != &rdev->wiphy) {
7885 return -EINVAL;
7886 }
7887
7888 if (!info->attrs[NL80211_ATTR_TESTDATA])
7889 return -EINVAL;
7890
7891 rdev->cur_cmd_info = info;
7892 err = rdev_testmode_cmd(rdev, wdev,
7893 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7894 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7895 rdev->cur_cmd_info = NULL;
7896
7897 return err;
7898 }
7899
7900 static int nl80211_testmode_dump(struct sk_buff *skb,
7901 struct netlink_callback *cb)
7902 {
7903 struct cfg80211_registered_device *rdev;
7904 int err;
7905 long phy_idx;
7906 void *data = NULL;
7907 int data_len = 0;
7908
7909 rtnl_lock();
7910
7911 if (cb->args[0]) {
7912 /*
7913 * 0 is a valid index, but not valid for args[0],
7914 * so we need to offset by 1.
7915 */
7916 phy_idx = cb->args[0] - 1;
7917 } else {
7918 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7919 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7920 nl80211_policy);
7921 if (err)
7922 goto out_err;
7923
7924 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7925 nl80211_fam.attrbuf);
7926 if (IS_ERR(rdev)) {
7927 err = PTR_ERR(rdev);
7928 goto out_err;
7929 }
7930 phy_idx = rdev->wiphy_idx;
7931 rdev = NULL;
7932
7933 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7934 cb->args[1] =
7935 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7936 }
7937
7938 if (cb->args[1]) {
7939 data = nla_data((void *)cb->args[1]);
7940 data_len = nla_len((void *)cb->args[1]);
7941 }
7942
7943 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7944 if (!rdev) {
7945 err = -ENOENT;
7946 goto out_err;
7947 }
7948
7949 if (!rdev->ops->testmode_dump) {
7950 err = -EOPNOTSUPP;
7951 goto out_err;
7952 }
7953
7954 while (1) {
7955 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7956 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7957 NL80211_CMD_TESTMODE);
7958 struct nlattr *tmdata;
7959
7960 if (!hdr)
7961 break;
7962
7963 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7964 genlmsg_cancel(skb, hdr);
7965 break;
7966 }
7967
7968 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7969 if (!tmdata) {
7970 genlmsg_cancel(skb, hdr);
7971 break;
7972 }
7973 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7974 nla_nest_end(skb, tmdata);
7975
7976 if (err == -ENOBUFS || err == -ENOENT) {
7977 genlmsg_cancel(skb, hdr);
7978 break;
7979 } else if (err) {
7980 genlmsg_cancel(skb, hdr);
7981 goto out_err;
7982 }
7983
7984 genlmsg_end(skb, hdr);
7985 }
7986
7987 err = skb->len;
7988 /* see above */
7989 cb->args[0] = phy_idx + 1;
7990 out_err:
7991 rtnl_unlock();
7992 return err;
7993 }
7994 #endif
7995
7996 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7997 {
7998 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7999 struct net_device *dev = info->user_ptr[1];
8000 struct cfg80211_connect_params connect;
8001 struct wiphy *wiphy;
8002 struct cfg80211_cached_keys *connkeys = NULL;
8003 int err;
8004
8005 memset(&connect, 0, sizeof(connect));
8006
8007 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8008 return -EINVAL;
8009
8010 if (!info->attrs[NL80211_ATTR_SSID] ||
8011 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8012 return -EINVAL;
8013
8014 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8015 connect.auth_type =
8016 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8017 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8018 NL80211_CMD_CONNECT))
8019 return -EINVAL;
8020 } else
8021 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8022
8023 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8024
8025 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8026 NL80211_MAX_NR_CIPHER_SUITES);
8027 if (err)
8028 return err;
8029
8030 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8031 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8032 return -EOPNOTSUPP;
8033
8034 wiphy = &rdev->wiphy;
8035
8036 connect.bg_scan_period = -1;
8037 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8038 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8039 connect.bg_scan_period =
8040 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8041 }
8042
8043 if (info->attrs[NL80211_ATTR_MAC])
8044 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8045 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8046 connect.bssid_hint =
8047 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8048 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8049 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8050
8051 if (info->attrs[NL80211_ATTR_IE]) {
8052 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8053 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8054 }
8055
8056 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8057 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8058 if (connect.mfp != NL80211_MFP_REQUIRED &&
8059 connect.mfp != NL80211_MFP_NO)
8060 return -EINVAL;
8061 } else {
8062 connect.mfp = NL80211_MFP_NO;
8063 }
8064
8065 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8066 connect.prev_bssid =
8067 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8068
8069 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8070 connect.channel = nl80211_get_valid_chan(
8071 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8072 if (!connect.channel)
8073 return -EINVAL;
8074 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8075 connect.channel_hint = nl80211_get_valid_chan(
8076 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8077 if (!connect.channel_hint)
8078 return -EINVAL;
8079 }
8080
8081 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8082 connkeys = nl80211_parse_connkeys(rdev,
8083 info->attrs[NL80211_ATTR_KEYS], NULL);
8084 if (IS_ERR(connkeys))
8085 return PTR_ERR(connkeys);
8086 }
8087
8088 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8089 connect.flags |= ASSOC_REQ_DISABLE_HT;
8090
8091 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8092 memcpy(&connect.ht_capa_mask,
8093 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8094 sizeof(connect.ht_capa_mask));
8095
8096 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8097 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8098 kzfree(connkeys);
8099 return -EINVAL;
8100 }
8101 memcpy(&connect.ht_capa,
8102 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8103 sizeof(connect.ht_capa));
8104 }
8105
8106 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8107 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8108
8109 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8110 memcpy(&connect.vht_capa_mask,
8111 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8112 sizeof(connect.vht_capa_mask));
8113
8114 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8115 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8116 kzfree(connkeys);
8117 return -EINVAL;
8118 }
8119 memcpy(&connect.vht_capa,
8120 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8121 sizeof(connect.vht_capa));
8122 }
8123
8124 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8125 if (!((rdev->wiphy.features &
8126 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8127 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8128 !wiphy_ext_feature_isset(&rdev->wiphy,
8129 NL80211_EXT_FEATURE_RRM)) {
8130 kzfree(connkeys);
8131 return -EINVAL;
8132 }
8133 connect.flags |= ASSOC_REQ_USE_RRM;
8134 }
8135
8136 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8137 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8138 kzfree(connkeys);
8139 return -EOPNOTSUPP;
8140 }
8141
8142 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8143 /* bss selection makes no sense if bssid is set */
8144 if (connect.bssid) {
8145 kzfree(connkeys);
8146 return -EINVAL;
8147 }
8148
8149 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8150 wiphy, &connect.bss_select);
8151 if (err) {
8152 kzfree(connkeys);
8153 return err;
8154 }
8155 }
8156
8157 wdev_lock(dev->ieee80211_ptr);
8158 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8159 connect.prev_bssid);
8160 wdev_unlock(dev->ieee80211_ptr);
8161 if (err)
8162 kzfree(connkeys);
8163 return err;
8164 }
8165
8166 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8167 {
8168 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8169 struct net_device *dev = info->user_ptr[1];
8170 u16 reason;
8171 int ret;
8172
8173 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8174 reason = WLAN_REASON_DEAUTH_LEAVING;
8175 else
8176 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8177
8178 if (reason == 0)
8179 return -EINVAL;
8180
8181 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8182 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8183 return -EOPNOTSUPP;
8184
8185 wdev_lock(dev->ieee80211_ptr);
8186 ret = cfg80211_disconnect(rdev, dev, reason, true);
8187 wdev_unlock(dev->ieee80211_ptr);
8188 return ret;
8189 }
8190
8191 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8192 {
8193 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8194 struct net *net;
8195 int err;
8196
8197 if (info->attrs[NL80211_ATTR_PID]) {
8198 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8199
8200 net = get_net_ns_by_pid(pid);
8201 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8202 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8203
8204 net = get_net_ns_by_fd(fd);
8205 } else {
8206 return -EINVAL;
8207 }
8208
8209 if (IS_ERR(net))
8210 return PTR_ERR(net);
8211
8212 err = 0;
8213
8214 /* check if anything to do */
8215 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8216 err = cfg80211_switch_netns(rdev, net);
8217
8218 put_net(net);
8219 return err;
8220 }
8221
8222 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8223 {
8224 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8225 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8226 struct cfg80211_pmksa *pmksa) = NULL;
8227 struct net_device *dev = info->user_ptr[1];
8228 struct cfg80211_pmksa pmksa;
8229
8230 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8231
8232 if (!info->attrs[NL80211_ATTR_MAC])
8233 return -EINVAL;
8234
8235 if (!info->attrs[NL80211_ATTR_PMKID])
8236 return -EINVAL;
8237
8238 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8239 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8240
8241 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8242 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8243 return -EOPNOTSUPP;
8244
8245 switch (info->genlhdr->cmd) {
8246 case NL80211_CMD_SET_PMKSA:
8247 rdev_ops = rdev->ops->set_pmksa;
8248 break;
8249 case NL80211_CMD_DEL_PMKSA:
8250 rdev_ops = rdev->ops->del_pmksa;
8251 break;
8252 default:
8253 WARN_ON(1);
8254 break;
8255 }
8256
8257 if (!rdev_ops)
8258 return -EOPNOTSUPP;
8259
8260 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8261 }
8262
8263 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8264 {
8265 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8266 struct net_device *dev = info->user_ptr[1];
8267
8268 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8269 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8270 return -EOPNOTSUPP;
8271
8272 if (!rdev->ops->flush_pmksa)
8273 return -EOPNOTSUPP;
8274
8275 return rdev_flush_pmksa(rdev, dev);
8276 }
8277
8278 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8279 {
8280 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8281 struct net_device *dev = info->user_ptr[1];
8282 u8 action_code, dialog_token;
8283 u32 peer_capability = 0;
8284 u16 status_code;
8285 u8 *peer;
8286 bool initiator;
8287
8288 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8289 !rdev->ops->tdls_mgmt)
8290 return -EOPNOTSUPP;
8291
8292 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8293 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8294 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8295 !info->attrs[NL80211_ATTR_IE] ||
8296 !info->attrs[NL80211_ATTR_MAC])
8297 return -EINVAL;
8298
8299 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8300 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8301 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8302 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8303 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8304 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8305 peer_capability =
8306 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8307
8308 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8309 dialog_token, status_code, peer_capability,
8310 initiator,
8311 nla_data(info->attrs[NL80211_ATTR_IE]),
8312 nla_len(info->attrs[NL80211_ATTR_IE]));
8313 }
8314
8315 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8316 {
8317 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8318 struct net_device *dev = info->user_ptr[1];
8319 enum nl80211_tdls_operation operation;
8320 u8 *peer;
8321
8322 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8323 !rdev->ops->tdls_oper)
8324 return -EOPNOTSUPP;
8325
8326 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8327 !info->attrs[NL80211_ATTR_MAC])
8328 return -EINVAL;
8329
8330 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8331 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8332
8333 return rdev_tdls_oper(rdev, dev, peer, operation);
8334 }
8335
8336 static int nl80211_remain_on_channel(struct sk_buff *skb,
8337 struct genl_info *info)
8338 {
8339 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8340 struct wireless_dev *wdev = info->user_ptr[1];
8341 struct cfg80211_chan_def chandef;
8342 struct sk_buff *msg;
8343 void *hdr;
8344 u64 cookie;
8345 u32 duration;
8346 int err;
8347
8348 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8349 !info->attrs[NL80211_ATTR_DURATION])
8350 return -EINVAL;
8351
8352 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8353
8354 if (!rdev->ops->remain_on_channel ||
8355 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8356 return -EOPNOTSUPP;
8357
8358 /*
8359 * We should be on that channel for at least a minimum amount of
8360 * time (10ms) but no longer than the driver supports.
8361 */
8362 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8363 duration > rdev->wiphy.max_remain_on_channel_duration)
8364 return -EINVAL;
8365
8366 err = nl80211_parse_chandef(rdev, info, &chandef);
8367 if (err)
8368 return err;
8369
8370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8371 if (!msg)
8372 return -ENOMEM;
8373
8374 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8375 NL80211_CMD_REMAIN_ON_CHANNEL);
8376 if (!hdr) {
8377 err = -ENOBUFS;
8378 goto free_msg;
8379 }
8380
8381 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8382 duration, &cookie);
8383
8384 if (err)
8385 goto free_msg;
8386
8387 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8388 NL80211_ATTR_PAD))
8389 goto nla_put_failure;
8390
8391 genlmsg_end(msg, hdr);
8392
8393 return genlmsg_reply(msg, info);
8394
8395 nla_put_failure:
8396 err = -ENOBUFS;
8397 free_msg:
8398 nlmsg_free(msg);
8399 return err;
8400 }
8401
8402 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8403 struct genl_info *info)
8404 {
8405 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8406 struct wireless_dev *wdev = info->user_ptr[1];
8407 u64 cookie;
8408
8409 if (!info->attrs[NL80211_ATTR_COOKIE])
8410 return -EINVAL;
8411
8412 if (!rdev->ops->cancel_remain_on_channel)
8413 return -EOPNOTSUPP;
8414
8415 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8416
8417 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8418 }
8419
8420 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8421 u8 *rates, u8 rates_len)
8422 {
8423 u8 i;
8424 u32 mask = 0;
8425
8426 for (i = 0; i < rates_len; i++) {
8427 int rate = (rates[i] & 0x7f) * 5;
8428 int ridx;
8429 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8430 struct ieee80211_rate *srate =
8431 &sband->bitrates[ridx];
8432 if (rate == srate->bitrate) {
8433 mask |= 1 << ridx;
8434 break;
8435 }
8436 }
8437 if (ridx == sband->n_bitrates)
8438 return 0; /* rate not found */
8439 }
8440
8441 return mask;
8442 }
8443
8444 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8445 u8 *rates, u8 rates_len,
8446 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8447 {
8448 u8 i;
8449
8450 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8451
8452 for (i = 0; i < rates_len; i++) {
8453 int ridx, rbit;
8454
8455 ridx = rates[i] / 8;
8456 rbit = BIT(rates[i] % 8);
8457
8458 /* check validity */
8459 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8460 return false;
8461
8462 /* check availability */
8463 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8464 mcs[ridx] |= rbit;
8465 else
8466 return false;
8467 }
8468
8469 return true;
8470 }
8471
8472 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8473 {
8474 u16 mcs_mask = 0;
8475
8476 switch (vht_mcs_map) {
8477 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8478 break;
8479 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8480 mcs_mask = 0x00FF;
8481 break;
8482 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8483 mcs_mask = 0x01FF;
8484 break;
8485 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8486 mcs_mask = 0x03FF;
8487 break;
8488 default:
8489 break;
8490 }
8491
8492 return mcs_mask;
8493 }
8494
8495 static void vht_build_mcs_mask(u16 vht_mcs_map,
8496 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8497 {
8498 u8 nss;
8499
8500 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8501 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8502 vht_mcs_map >>= 2;
8503 }
8504 }
8505
8506 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8507 struct nl80211_txrate_vht *txrate,
8508 u16 mcs[NL80211_VHT_NSS_MAX])
8509 {
8510 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8511 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8512 u8 i;
8513
8514 if (!sband->vht_cap.vht_supported)
8515 return false;
8516
8517 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8518
8519 /* Build vht_mcs_mask from VHT capabilities */
8520 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8521
8522 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8523 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8524 mcs[i] = txrate->mcs[i];
8525 else
8526 return false;
8527 }
8528
8529 return true;
8530 }
8531
8532 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8533 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8534 .len = NL80211_MAX_SUPP_RATES },
8535 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8536 .len = NL80211_MAX_SUPP_HT_RATES },
8537 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8538 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8539 };
8540
8541 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8542 struct genl_info *info)
8543 {
8544 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8546 struct cfg80211_bitrate_mask mask;
8547 int rem, i;
8548 struct net_device *dev = info->user_ptr[1];
8549 struct nlattr *tx_rates;
8550 struct ieee80211_supported_band *sband;
8551 u16 vht_tx_mcs_map;
8552
8553 if (!rdev->ops->set_bitrate_mask)
8554 return -EOPNOTSUPP;
8555
8556 memset(&mask, 0, sizeof(mask));
8557 /* Default to all rates enabled */
8558 for (i = 0; i < NUM_NL80211_BANDS; i++) {
8559 sband = rdev->wiphy.bands[i];
8560
8561 if (!sband)
8562 continue;
8563
8564 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8565 memcpy(mask.control[i].ht_mcs,
8566 sband->ht_cap.mcs.rx_mask,
8567 sizeof(mask.control[i].ht_mcs));
8568
8569 if (!sband->vht_cap.vht_supported)
8570 continue;
8571
8572 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8573 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8574 }
8575
8576 /* if no rates are given set it back to the defaults */
8577 if (!info->attrs[NL80211_ATTR_TX_RATES])
8578 goto out;
8579
8580 /*
8581 * The nested attribute uses enum nl80211_band as the index. This maps
8582 * directly to the enum nl80211_band values used in cfg80211.
8583 */
8584 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8585 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8586 enum nl80211_band band = nla_type(tx_rates);
8587 int err;
8588
8589 if (band < 0 || band >= NUM_NL80211_BANDS)
8590 return -EINVAL;
8591 sband = rdev->wiphy.bands[band];
8592 if (sband == NULL)
8593 return -EINVAL;
8594 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8595 nla_len(tx_rates), nl80211_txattr_policy);
8596 if (err)
8597 return err;
8598 if (tb[NL80211_TXRATE_LEGACY]) {
8599 mask.control[band].legacy = rateset_to_mask(
8600 sband,
8601 nla_data(tb[NL80211_TXRATE_LEGACY]),
8602 nla_len(tb[NL80211_TXRATE_LEGACY]));
8603 if ((mask.control[band].legacy == 0) &&
8604 nla_len(tb[NL80211_TXRATE_LEGACY]))
8605 return -EINVAL;
8606 }
8607 if (tb[NL80211_TXRATE_HT]) {
8608 if (!ht_rateset_to_mask(
8609 sband,
8610 nla_data(tb[NL80211_TXRATE_HT]),
8611 nla_len(tb[NL80211_TXRATE_HT]),
8612 mask.control[band].ht_mcs))
8613 return -EINVAL;
8614 }
8615 if (tb[NL80211_TXRATE_VHT]) {
8616 if (!vht_set_mcs_mask(
8617 sband,
8618 nla_data(tb[NL80211_TXRATE_VHT]),
8619 mask.control[band].vht_mcs))
8620 return -EINVAL;
8621 }
8622 if (tb[NL80211_TXRATE_GI]) {
8623 mask.control[band].gi =
8624 nla_get_u8(tb[NL80211_TXRATE_GI]);
8625 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8626 return -EINVAL;
8627 }
8628
8629 if (mask.control[band].legacy == 0) {
8630 /* don't allow empty legacy rates if HT or VHT
8631 * are not even supported.
8632 */
8633 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8634 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8635 return -EINVAL;
8636
8637 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8638 if (mask.control[band].ht_mcs[i])
8639 goto out;
8640
8641 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8642 if (mask.control[band].vht_mcs[i])
8643 goto out;
8644
8645 /* legacy and mcs rates may not be both empty */
8646 return -EINVAL;
8647 }
8648 }
8649
8650 out:
8651 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8652 }
8653
8654 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8655 {
8656 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8657 struct wireless_dev *wdev = info->user_ptr[1];
8658 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8659
8660 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8661 return -EINVAL;
8662
8663 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8664 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8665
8666 switch (wdev->iftype) {
8667 case NL80211_IFTYPE_STATION:
8668 case NL80211_IFTYPE_ADHOC:
8669 case NL80211_IFTYPE_P2P_CLIENT:
8670 case NL80211_IFTYPE_AP:
8671 case NL80211_IFTYPE_AP_VLAN:
8672 case NL80211_IFTYPE_MESH_POINT:
8673 case NL80211_IFTYPE_P2P_GO:
8674 case NL80211_IFTYPE_P2P_DEVICE:
8675 break;
8676 default:
8677 return -EOPNOTSUPP;
8678 }
8679
8680 /* not much point in registering if we can't reply */
8681 if (!rdev->ops->mgmt_tx)
8682 return -EOPNOTSUPP;
8683
8684 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8685 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8686 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8687 }
8688
8689 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8690 {
8691 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8692 struct wireless_dev *wdev = info->user_ptr[1];
8693 struct cfg80211_chan_def chandef;
8694 int err;
8695 void *hdr = NULL;
8696 u64 cookie;
8697 struct sk_buff *msg = NULL;
8698 struct cfg80211_mgmt_tx_params params = {
8699 .dont_wait_for_ack =
8700 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8701 };
8702
8703 if (!info->attrs[NL80211_ATTR_FRAME])
8704 return -EINVAL;
8705
8706 if (!rdev->ops->mgmt_tx)
8707 return -EOPNOTSUPP;
8708
8709 switch (wdev->iftype) {
8710 case NL80211_IFTYPE_P2P_DEVICE:
8711 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8712 return -EINVAL;
8713 case NL80211_IFTYPE_STATION:
8714 case NL80211_IFTYPE_ADHOC:
8715 case NL80211_IFTYPE_P2P_CLIENT:
8716 case NL80211_IFTYPE_AP:
8717 case NL80211_IFTYPE_AP_VLAN:
8718 case NL80211_IFTYPE_MESH_POINT:
8719 case NL80211_IFTYPE_P2P_GO:
8720 break;
8721 default:
8722 return -EOPNOTSUPP;
8723 }
8724
8725 if (info->attrs[NL80211_ATTR_DURATION]) {
8726 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8727 return -EINVAL;
8728 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8729
8730 /*
8731 * We should wait on the channel for at least a minimum amount
8732 * of time (10ms) but no longer than the driver supports.
8733 */
8734 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8735 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8736 return -EINVAL;
8737
8738 }
8739
8740 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8741
8742 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8743 return -EINVAL;
8744
8745 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8746
8747 /* get the channel if any has been specified, otherwise pass NULL to
8748 * the driver. The latter will use the current one
8749 */
8750 chandef.chan = NULL;
8751 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8752 err = nl80211_parse_chandef(rdev, info, &chandef);
8753 if (err)
8754 return err;
8755 }
8756
8757 if (!chandef.chan && params.offchan)
8758 return -EINVAL;
8759
8760 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8761 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8762
8763 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8764 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8765 int i;
8766
8767 if (len % sizeof(u16))
8768 return -EINVAL;
8769
8770 params.n_csa_offsets = len / sizeof(u16);
8771 params.csa_offsets =
8772 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8773
8774 /* check that all the offsets fit the frame */
8775 for (i = 0; i < params.n_csa_offsets; i++) {
8776 if (params.csa_offsets[i] >= params.len)
8777 return -EINVAL;
8778 }
8779 }
8780
8781 if (!params.dont_wait_for_ack) {
8782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8783 if (!msg)
8784 return -ENOMEM;
8785
8786 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8787 NL80211_CMD_FRAME);
8788 if (!hdr) {
8789 err = -ENOBUFS;
8790 goto free_msg;
8791 }
8792 }
8793
8794 params.chan = chandef.chan;
8795 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8796 if (err)
8797 goto free_msg;
8798
8799 if (msg) {
8800 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8801 NL80211_ATTR_PAD))
8802 goto nla_put_failure;
8803
8804 genlmsg_end(msg, hdr);
8805 return genlmsg_reply(msg, info);
8806 }
8807
8808 return 0;
8809
8810 nla_put_failure:
8811 err = -ENOBUFS;
8812 free_msg:
8813 nlmsg_free(msg);
8814 return err;
8815 }
8816
8817 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8818 {
8819 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8820 struct wireless_dev *wdev = info->user_ptr[1];
8821 u64 cookie;
8822
8823 if (!info->attrs[NL80211_ATTR_COOKIE])
8824 return -EINVAL;
8825
8826 if (!rdev->ops->mgmt_tx_cancel_wait)
8827 return -EOPNOTSUPP;
8828
8829 switch (wdev->iftype) {
8830 case NL80211_IFTYPE_STATION:
8831 case NL80211_IFTYPE_ADHOC:
8832 case NL80211_IFTYPE_P2P_CLIENT:
8833 case NL80211_IFTYPE_AP:
8834 case NL80211_IFTYPE_AP_VLAN:
8835 case NL80211_IFTYPE_P2P_GO:
8836 case NL80211_IFTYPE_P2P_DEVICE:
8837 break;
8838 default:
8839 return -EOPNOTSUPP;
8840 }
8841
8842 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8843
8844 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8845 }
8846
8847 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8848 {
8849 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8850 struct wireless_dev *wdev;
8851 struct net_device *dev = info->user_ptr[1];
8852 u8 ps_state;
8853 bool state;
8854 int err;
8855
8856 if (!info->attrs[NL80211_ATTR_PS_STATE])
8857 return -EINVAL;
8858
8859 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8860
8861 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8862 return -EINVAL;
8863
8864 wdev = dev->ieee80211_ptr;
8865
8866 if (!rdev->ops->set_power_mgmt)
8867 return -EOPNOTSUPP;
8868
8869 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8870
8871 if (state == wdev->ps)
8872 return 0;
8873
8874 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8875 if (!err)
8876 wdev->ps = state;
8877 return err;
8878 }
8879
8880 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8881 {
8882 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8883 enum nl80211_ps_state ps_state;
8884 struct wireless_dev *wdev;
8885 struct net_device *dev = info->user_ptr[1];
8886 struct sk_buff *msg;
8887 void *hdr;
8888 int err;
8889
8890 wdev = dev->ieee80211_ptr;
8891
8892 if (!rdev->ops->set_power_mgmt)
8893 return -EOPNOTSUPP;
8894
8895 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8896 if (!msg)
8897 return -ENOMEM;
8898
8899 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8900 NL80211_CMD_GET_POWER_SAVE);
8901 if (!hdr) {
8902 err = -ENOBUFS;
8903 goto free_msg;
8904 }
8905
8906 if (wdev->ps)
8907 ps_state = NL80211_PS_ENABLED;
8908 else
8909 ps_state = NL80211_PS_DISABLED;
8910
8911 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8912 goto nla_put_failure;
8913
8914 genlmsg_end(msg, hdr);
8915 return genlmsg_reply(msg, info);
8916
8917 nla_put_failure:
8918 err = -ENOBUFS;
8919 free_msg:
8920 nlmsg_free(msg);
8921 return err;
8922 }
8923
8924 static const struct nla_policy
8925 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8926 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8927 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8928 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8929 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8930 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8931 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8932 };
8933
8934 static int nl80211_set_cqm_txe(struct genl_info *info,
8935 u32 rate, u32 pkts, u32 intvl)
8936 {
8937 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8938 struct net_device *dev = info->user_ptr[1];
8939 struct wireless_dev *wdev = dev->ieee80211_ptr;
8940
8941 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8942 return -EINVAL;
8943
8944 if (!rdev->ops->set_cqm_txe_config)
8945 return -EOPNOTSUPP;
8946
8947 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8948 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8949 return -EOPNOTSUPP;
8950
8951 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8952 }
8953
8954 static int nl80211_set_cqm_rssi(struct genl_info *info,
8955 s32 threshold, u32 hysteresis)
8956 {
8957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8958 struct net_device *dev = info->user_ptr[1];
8959 struct wireless_dev *wdev = dev->ieee80211_ptr;
8960
8961 if (threshold > 0)
8962 return -EINVAL;
8963
8964 /* disabling - hysteresis should also be zero then */
8965 if (threshold == 0)
8966 hysteresis = 0;
8967
8968 if (!rdev->ops->set_cqm_rssi_config)
8969 return -EOPNOTSUPP;
8970
8971 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8972 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8973 return -EOPNOTSUPP;
8974
8975 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8976 }
8977
8978 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8979 {
8980 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8981 struct nlattr *cqm;
8982 int err;
8983
8984 cqm = info->attrs[NL80211_ATTR_CQM];
8985 if (!cqm)
8986 return -EINVAL;
8987
8988 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8989 nl80211_attr_cqm_policy);
8990 if (err)
8991 return err;
8992
8993 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8994 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8995 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8996 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8997
8998 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8999 }
9000
9001 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9002 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9003 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9004 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9005 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9006 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9007
9008 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9009 }
9010
9011 return -EINVAL;
9012 }
9013
9014 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9015 {
9016 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9017 struct net_device *dev = info->user_ptr[1];
9018 struct ocb_setup setup = {};
9019 int err;
9020
9021 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9022 if (err)
9023 return err;
9024
9025 return cfg80211_join_ocb(rdev, dev, &setup);
9026 }
9027
9028 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9029 {
9030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9031 struct net_device *dev = info->user_ptr[1];
9032
9033 return cfg80211_leave_ocb(rdev, dev);
9034 }
9035
9036 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9037 {
9038 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9039 struct net_device *dev = info->user_ptr[1];
9040 struct mesh_config cfg;
9041 struct mesh_setup setup;
9042 int err;
9043
9044 /* start with default */
9045 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9046 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9047
9048 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9049 /* and parse parameters if given */
9050 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9051 if (err)
9052 return err;
9053 }
9054
9055 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9056 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9057 return -EINVAL;
9058
9059 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9060 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9061
9062 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9063 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9064 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9065 return -EINVAL;
9066
9067 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9068 setup.beacon_interval =
9069 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9070 if (setup.beacon_interval < 10 ||
9071 setup.beacon_interval > 10000)
9072 return -EINVAL;
9073 }
9074
9075 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9076 setup.dtim_period =
9077 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9078 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9079 return -EINVAL;
9080 }
9081
9082 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9083 /* parse additional setup parameters if given */
9084 err = nl80211_parse_mesh_setup(info, &setup);
9085 if (err)
9086 return err;
9087 }
9088
9089 if (setup.user_mpm)
9090 cfg.auto_open_plinks = false;
9091
9092 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9093 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9094 if (err)
9095 return err;
9096 } else {
9097 /* cfg80211_join_mesh() will sort it out */
9098 setup.chandef.chan = NULL;
9099 }
9100
9101 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9102 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9103 int n_rates =
9104 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9105 struct ieee80211_supported_band *sband;
9106
9107 if (!setup.chandef.chan)
9108 return -EINVAL;
9109
9110 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9111
9112 err = ieee80211_get_ratemask(sband, rates, n_rates,
9113 &setup.basic_rates);
9114 if (err)
9115 return err;
9116 }
9117
9118 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9119 }
9120
9121 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9122 {
9123 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9124 struct net_device *dev = info->user_ptr[1];
9125
9126 return cfg80211_leave_mesh(rdev, dev);
9127 }
9128
9129 #ifdef CONFIG_PM
9130 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9131 struct cfg80211_registered_device *rdev)
9132 {
9133 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9134 struct nlattr *nl_pats, *nl_pat;
9135 int i, pat_len;
9136
9137 if (!wowlan->n_patterns)
9138 return 0;
9139
9140 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9141 if (!nl_pats)
9142 return -ENOBUFS;
9143
9144 for (i = 0; i < wowlan->n_patterns; i++) {
9145 nl_pat = nla_nest_start(msg, i + 1);
9146 if (!nl_pat)
9147 return -ENOBUFS;
9148 pat_len = wowlan->patterns[i].pattern_len;
9149 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9150 wowlan->patterns[i].mask) ||
9151 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9152 wowlan->patterns[i].pattern) ||
9153 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9154 wowlan->patterns[i].pkt_offset))
9155 return -ENOBUFS;
9156 nla_nest_end(msg, nl_pat);
9157 }
9158 nla_nest_end(msg, nl_pats);
9159
9160 return 0;
9161 }
9162
9163 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9164 struct cfg80211_wowlan_tcp *tcp)
9165 {
9166 struct nlattr *nl_tcp;
9167
9168 if (!tcp)
9169 return 0;
9170
9171 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9172 if (!nl_tcp)
9173 return -ENOBUFS;
9174
9175 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9176 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9177 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9178 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9179 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9180 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9181 tcp->payload_len, tcp->payload) ||
9182 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9183 tcp->data_interval) ||
9184 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9185 tcp->wake_len, tcp->wake_data) ||
9186 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9187 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9188 return -ENOBUFS;
9189
9190 if (tcp->payload_seq.len &&
9191 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9192 sizeof(tcp->payload_seq), &tcp->payload_seq))
9193 return -ENOBUFS;
9194
9195 if (tcp->payload_tok.len &&
9196 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9197 sizeof(tcp->payload_tok) + tcp->tokens_size,
9198 &tcp->payload_tok))
9199 return -ENOBUFS;
9200
9201 nla_nest_end(msg, nl_tcp);
9202
9203 return 0;
9204 }
9205
9206 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9207 struct cfg80211_sched_scan_request *req)
9208 {
9209 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9210 int i;
9211
9212 if (!req)
9213 return 0;
9214
9215 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9216 if (!nd)
9217 return -ENOBUFS;
9218
9219 if (req->n_scan_plans == 1 &&
9220 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9221 req->scan_plans[0].interval * 1000))
9222 return -ENOBUFS;
9223
9224 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9225 return -ENOBUFS;
9226
9227 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9228 if (!freqs)
9229 return -ENOBUFS;
9230
9231 for (i = 0; i < req->n_channels; i++)
9232 nla_put_u32(msg, i, req->channels[i]->center_freq);
9233
9234 nla_nest_end(msg, freqs);
9235
9236 if (req->n_match_sets) {
9237 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9238 for (i = 0; i < req->n_match_sets; i++) {
9239 match = nla_nest_start(msg, i);
9240 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9241 req->match_sets[i].ssid.ssid_len,
9242 req->match_sets[i].ssid.ssid);
9243 nla_nest_end(msg, match);
9244 }
9245 nla_nest_end(msg, matches);
9246 }
9247
9248 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9249 if (!scan_plans)
9250 return -ENOBUFS;
9251
9252 for (i = 0; i < req->n_scan_plans; i++) {
9253 scan_plan = nla_nest_start(msg, i + 1);
9254 if (!scan_plan ||
9255 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9256 req->scan_plans[i].interval) ||
9257 (req->scan_plans[i].iterations &&
9258 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9259 req->scan_plans[i].iterations)))
9260 return -ENOBUFS;
9261 nla_nest_end(msg, scan_plan);
9262 }
9263 nla_nest_end(msg, scan_plans);
9264
9265 nla_nest_end(msg, nd);
9266
9267 return 0;
9268 }
9269
9270 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9271 {
9272 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9273 struct sk_buff *msg;
9274 void *hdr;
9275 u32 size = NLMSG_DEFAULT_SIZE;
9276
9277 if (!rdev->wiphy.wowlan)
9278 return -EOPNOTSUPP;
9279
9280 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9281 /* adjust size to have room for all the data */
9282 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9283 rdev->wiphy.wowlan_config->tcp->payload_len +
9284 rdev->wiphy.wowlan_config->tcp->wake_len +
9285 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9286 }
9287
9288 msg = nlmsg_new(size, GFP_KERNEL);
9289 if (!msg)
9290 return -ENOMEM;
9291
9292 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9293 NL80211_CMD_GET_WOWLAN);
9294 if (!hdr)
9295 goto nla_put_failure;
9296
9297 if (rdev->wiphy.wowlan_config) {
9298 struct nlattr *nl_wowlan;
9299
9300 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9301 if (!nl_wowlan)
9302 goto nla_put_failure;
9303
9304 if ((rdev->wiphy.wowlan_config->any &&
9305 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9306 (rdev->wiphy.wowlan_config->disconnect &&
9307 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9308 (rdev->wiphy.wowlan_config->magic_pkt &&
9309 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9310 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9311 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9312 (rdev->wiphy.wowlan_config->eap_identity_req &&
9313 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9314 (rdev->wiphy.wowlan_config->four_way_handshake &&
9315 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9316 (rdev->wiphy.wowlan_config->rfkill_release &&
9317 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9318 goto nla_put_failure;
9319
9320 if (nl80211_send_wowlan_patterns(msg, rdev))
9321 goto nla_put_failure;
9322
9323 if (nl80211_send_wowlan_tcp(msg,
9324 rdev->wiphy.wowlan_config->tcp))
9325 goto nla_put_failure;
9326
9327 if (nl80211_send_wowlan_nd(
9328 msg,
9329 rdev->wiphy.wowlan_config->nd_config))
9330 goto nla_put_failure;
9331
9332 nla_nest_end(msg, nl_wowlan);
9333 }
9334
9335 genlmsg_end(msg, hdr);
9336 return genlmsg_reply(msg, info);
9337
9338 nla_put_failure:
9339 nlmsg_free(msg);
9340 return -ENOBUFS;
9341 }
9342
9343 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9344 struct nlattr *attr,
9345 struct cfg80211_wowlan *trig)
9346 {
9347 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9348 struct cfg80211_wowlan_tcp *cfg;
9349 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9350 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9351 u32 size;
9352 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9353 int err, port;
9354
9355 if (!rdev->wiphy.wowlan->tcp)
9356 return -EINVAL;
9357
9358 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9359 nla_data(attr), nla_len(attr),
9360 nl80211_wowlan_tcp_policy);
9361 if (err)
9362 return err;
9363
9364 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9365 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9366 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9367 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9368 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9369 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9370 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9371 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9372 return -EINVAL;
9373
9374 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9375 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9376 return -EINVAL;
9377
9378 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9379 rdev->wiphy.wowlan->tcp->data_interval_max ||
9380 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9381 return -EINVAL;
9382
9383 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9384 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9385 return -EINVAL;
9386
9387 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9388 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9389 return -EINVAL;
9390
9391 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9392 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9393
9394 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9395 tokens_size = tokln - sizeof(*tok);
9396
9397 if (!tok->len || tokens_size % tok->len)
9398 return -EINVAL;
9399 if (!rdev->wiphy.wowlan->tcp->tok)
9400 return -EINVAL;
9401 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9402 return -EINVAL;
9403 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9404 return -EINVAL;
9405 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9406 return -EINVAL;
9407 if (tok->offset + tok->len > data_size)
9408 return -EINVAL;
9409 }
9410
9411 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9412 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9413 if (!rdev->wiphy.wowlan->tcp->seq)
9414 return -EINVAL;
9415 if (seq->len == 0 || seq->len > 4)
9416 return -EINVAL;
9417 if (seq->len + seq->offset > data_size)
9418 return -EINVAL;
9419 }
9420
9421 size = sizeof(*cfg);
9422 size += data_size;
9423 size += wake_size + wake_mask_size;
9424 size += tokens_size;
9425
9426 cfg = kzalloc(size, GFP_KERNEL);
9427 if (!cfg)
9428 return -ENOMEM;
9429 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9430 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9431 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9432 ETH_ALEN);
9433 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9434 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9435 else
9436 port = 0;
9437 #ifdef CONFIG_INET
9438 /* allocate a socket and port for it and use it */
9439 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9440 IPPROTO_TCP, &cfg->sock, 1);
9441 if (err) {
9442 kfree(cfg);
9443 return err;
9444 }
9445 if (inet_csk_get_port(cfg->sock->sk, port)) {
9446 sock_release(cfg->sock);
9447 kfree(cfg);
9448 return -EADDRINUSE;
9449 }
9450 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9451 #else
9452 if (!port) {
9453 kfree(cfg);
9454 return -EINVAL;
9455 }
9456 cfg->src_port = port;
9457 #endif
9458
9459 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9460 cfg->payload_len = data_size;
9461 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9462 memcpy((void *)cfg->payload,
9463 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9464 data_size);
9465 if (seq)
9466 cfg->payload_seq = *seq;
9467 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9468 cfg->wake_len = wake_size;
9469 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9470 memcpy((void *)cfg->wake_data,
9471 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9472 wake_size);
9473 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9474 data_size + wake_size;
9475 memcpy((void *)cfg->wake_mask,
9476 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9477 wake_mask_size);
9478 if (tok) {
9479 cfg->tokens_size = tokens_size;
9480 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9481 }
9482
9483 trig->tcp = cfg;
9484
9485 return 0;
9486 }
9487
9488 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9489 const struct wiphy_wowlan_support *wowlan,
9490 struct nlattr *attr,
9491 struct cfg80211_wowlan *trig)
9492 {
9493 struct nlattr **tb;
9494 int err;
9495
9496 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9497 if (!tb)
9498 return -ENOMEM;
9499
9500 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9501 err = -EOPNOTSUPP;
9502 goto out;
9503 }
9504
9505 err = nla_parse(tb, NL80211_ATTR_MAX,
9506 nla_data(attr), nla_len(attr),
9507 nl80211_policy);
9508 if (err)
9509 goto out;
9510
9511 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9512 err = PTR_ERR_OR_ZERO(trig->nd_config);
9513 if (err)
9514 trig->nd_config = NULL;
9515
9516 out:
9517 kfree(tb);
9518 return err;
9519 }
9520
9521 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9522 {
9523 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9524 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9525 struct cfg80211_wowlan new_triggers = {};
9526 struct cfg80211_wowlan *ntrig;
9527 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9528 int err, i;
9529 bool prev_enabled = rdev->wiphy.wowlan_config;
9530 bool regular = false;
9531
9532 if (!wowlan)
9533 return -EOPNOTSUPP;
9534
9535 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9536 cfg80211_rdev_free_wowlan(rdev);
9537 rdev->wiphy.wowlan_config = NULL;
9538 goto set_wakeup;
9539 }
9540
9541 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9542 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9543 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9544 nl80211_wowlan_policy);
9545 if (err)
9546 return err;
9547
9548 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9549 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9550 return -EINVAL;
9551 new_triggers.any = true;
9552 }
9553
9554 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9555 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9556 return -EINVAL;
9557 new_triggers.disconnect = true;
9558 regular = true;
9559 }
9560
9561 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9562 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9563 return -EINVAL;
9564 new_triggers.magic_pkt = true;
9565 regular = true;
9566 }
9567
9568 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9569 return -EINVAL;
9570
9571 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9572 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9573 return -EINVAL;
9574 new_triggers.gtk_rekey_failure = true;
9575 regular = true;
9576 }
9577
9578 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9579 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9580 return -EINVAL;
9581 new_triggers.eap_identity_req = true;
9582 regular = true;
9583 }
9584
9585 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9586 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9587 return -EINVAL;
9588 new_triggers.four_way_handshake = true;
9589 regular = true;
9590 }
9591
9592 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9593 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9594 return -EINVAL;
9595 new_triggers.rfkill_release = true;
9596 regular = true;
9597 }
9598
9599 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9600 struct nlattr *pat;
9601 int n_patterns = 0;
9602 int rem, pat_len, mask_len, pkt_offset;
9603 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9604
9605 regular = true;
9606
9607 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9608 rem)
9609 n_patterns++;
9610 if (n_patterns > wowlan->n_patterns)
9611 return -EINVAL;
9612
9613 new_triggers.patterns = kcalloc(n_patterns,
9614 sizeof(new_triggers.patterns[0]),
9615 GFP_KERNEL);
9616 if (!new_triggers.patterns)
9617 return -ENOMEM;
9618
9619 new_triggers.n_patterns = n_patterns;
9620 i = 0;
9621
9622 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9623 rem) {
9624 u8 *mask_pat;
9625
9626 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9627 nla_len(pat), NULL);
9628 err = -EINVAL;
9629 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9630 !pat_tb[NL80211_PKTPAT_PATTERN])
9631 goto error;
9632 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9633 mask_len = DIV_ROUND_UP(pat_len, 8);
9634 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9635 goto error;
9636 if (pat_len > wowlan->pattern_max_len ||
9637 pat_len < wowlan->pattern_min_len)
9638 goto error;
9639
9640 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9641 pkt_offset = 0;
9642 else
9643 pkt_offset = nla_get_u32(
9644 pat_tb[NL80211_PKTPAT_OFFSET]);
9645 if (pkt_offset > wowlan->max_pkt_offset)
9646 goto error;
9647 new_triggers.patterns[i].pkt_offset = pkt_offset;
9648
9649 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9650 if (!mask_pat) {
9651 err = -ENOMEM;
9652 goto error;
9653 }
9654 new_triggers.patterns[i].mask = mask_pat;
9655 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9656 mask_len);
9657 mask_pat += mask_len;
9658 new_triggers.patterns[i].pattern = mask_pat;
9659 new_triggers.patterns[i].pattern_len = pat_len;
9660 memcpy(mask_pat,
9661 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9662 pat_len);
9663 i++;
9664 }
9665 }
9666
9667 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9668 regular = true;
9669 err = nl80211_parse_wowlan_tcp(
9670 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9671 &new_triggers);
9672 if (err)
9673 goto error;
9674 }
9675
9676 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9677 regular = true;
9678 err = nl80211_parse_wowlan_nd(
9679 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9680 &new_triggers);
9681 if (err)
9682 goto error;
9683 }
9684
9685 /* The 'any' trigger means the device continues operating more or less
9686 * as in its normal operation mode and wakes up the host on most of the
9687 * normal interrupts (like packet RX, ...)
9688 * It therefore makes little sense to combine with the more constrained
9689 * wakeup trigger modes.
9690 */
9691 if (new_triggers.any && regular) {
9692 err = -EINVAL;
9693 goto error;
9694 }
9695
9696 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9697 if (!ntrig) {
9698 err = -ENOMEM;
9699 goto error;
9700 }
9701 cfg80211_rdev_free_wowlan(rdev);
9702 rdev->wiphy.wowlan_config = ntrig;
9703
9704 set_wakeup:
9705 if (rdev->ops->set_wakeup &&
9706 prev_enabled != !!rdev->wiphy.wowlan_config)
9707 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9708
9709 return 0;
9710 error:
9711 for (i = 0; i < new_triggers.n_patterns; i++)
9712 kfree(new_triggers.patterns[i].mask);
9713 kfree(new_triggers.patterns);
9714 if (new_triggers.tcp && new_triggers.tcp->sock)
9715 sock_release(new_triggers.tcp->sock);
9716 kfree(new_triggers.tcp);
9717 kfree(new_triggers.nd_config);
9718 return err;
9719 }
9720 #endif
9721
9722 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9723 struct cfg80211_registered_device *rdev)
9724 {
9725 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9726 int i, j, pat_len;
9727 struct cfg80211_coalesce_rules *rule;
9728
9729 if (!rdev->coalesce->n_rules)
9730 return 0;
9731
9732 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9733 if (!nl_rules)
9734 return -ENOBUFS;
9735
9736 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9737 nl_rule = nla_nest_start(msg, i + 1);
9738 if (!nl_rule)
9739 return -ENOBUFS;
9740
9741 rule = &rdev->coalesce->rules[i];
9742 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9743 rule->delay))
9744 return -ENOBUFS;
9745
9746 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9747 rule->condition))
9748 return -ENOBUFS;
9749
9750 nl_pats = nla_nest_start(msg,
9751 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9752 if (!nl_pats)
9753 return -ENOBUFS;
9754
9755 for (j = 0; j < rule->n_patterns; j++) {
9756 nl_pat = nla_nest_start(msg, j + 1);
9757 if (!nl_pat)
9758 return -ENOBUFS;
9759 pat_len = rule->patterns[j].pattern_len;
9760 if (nla_put(msg, NL80211_PKTPAT_MASK,
9761 DIV_ROUND_UP(pat_len, 8),
9762 rule->patterns[j].mask) ||
9763 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9764 rule->patterns[j].pattern) ||
9765 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9766 rule->patterns[j].pkt_offset))
9767 return -ENOBUFS;
9768 nla_nest_end(msg, nl_pat);
9769 }
9770 nla_nest_end(msg, nl_pats);
9771 nla_nest_end(msg, nl_rule);
9772 }
9773 nla_nest_end(msg, nl_rules);
9774
9775 return 0;
9776 }
9777
9778 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9779 {
9780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9781 struct sk_buff *msg;
9782 void *hdr;
9783
9784 if (!rdev->wiphy.coalesce)
9785 return -EOPNOTSUPP;
9786
9787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9788 if (!msg)
9789 return -ENOMEM;
9790
9791 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9792 NL80211_CMD_GET_COALESCE);
9793 if (!hdr)
9794 goto nla_put_failure;
9795
9796 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9797 goto nla_put_failure;
9798
9799 genlmsg_end(msg, hdr);
9800 return genlmsg_reply(msg, info);
9801
9802 nla_put_failure:
9803 nlmsg_free(msg);
9804 return -ENOBUFS;
9805 }
9806
9807 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9808 {
9809 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9810 int i, j;
9811 struct cfg80211_coalesce_rules *rule;
9812
9813 if (!coalesce)
9814 return;
9815
9816 for (i = 0; i < coalesce->n_rules; i++) {
9817 rule = &coalesce->rules[i];
9818 for (j = 0; j < rule->n_patterns; j++)
9819 kfree(rule->patterns[j].mask);
9820 kfree(rule->patterns);
9821 }
9822 kfree(coalesce->rules);
9823 kfree(coalesce);
9824 rdev->coalesce = NULL;
9825 }
9826
9827 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9828 struct nlattr *rule,
9829 struct cfg80211_coalesce_rules *new_rule)
9830 {
9831 int err, i;
9832 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9833 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9834 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9835 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9836
9837 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9838 nla_len(rule), nl80211_coalesce_policy);
9839 if (err)
9840 return err;
9841
9842 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9843 new_rule->delay =
9844 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9845 if (new_rule->delay > coalesce->max_delay)
9846 return -EINVAL;
9847
9848 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9849 new_rule->condition =
9850 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9851 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9852 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9853 return -EINVAL;
9854
9855 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9856 return -EINVAL;
9857
9858 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9859 rem)
9860 n_patterns++;
9861 if (n_patterns > coalesce->n_patterns)
9862 return -EINVAL;
9863
9864 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9865 GFP_KERNEL);
9866 if (!new_rule->patterns)
9867 return -ENOMEM;
9868
9869 new_rule->n_patterns = n_patterns;
9870 i = 0;
9871
9872 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9873 rem) {
9874 u8 *mask_pat;
9875
9876 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9877 nla_len(pat), NULL);
9878 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9879 !pat_tb[NL80211_PKTPAT_PATTERN])
9880 return -EINVAL;
9881 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9882 mask_len = DIV_ROUND_UP(pat_len, 8);
9883 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9884 return -EINVAL;
9885 if (pat_len > coalesce->pattern_max_len ||
9886 pat_len < coalesce->pattern_min_len)
9887 return -EINVAL;
9888
9889 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9890 pkt_offset = 0;
9891 else
9892 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9893 if (pkt_offset > coalesce->max_pkt_offset)
9894 return -EINVAL;
9895 new_rule->patterns[i].pkt_offset = pkt_offset;
9896
9897 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9898 if (!mask_pat)
9899 return -ENOMEM;
9900
9901 new_rule->patterns[i].mask = mask_pat;
9902 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9903 mask_len);
9904
9905 mask_pat += mask_len;
9906 new_rule->patterns[i].pattern = mask_pat;
9907 new_rule->patterns[i].pattern_len = pat_len;
9908 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9909 pat_len);
9910 i++;
9911 }
9912
9913 return 0;
9914 }
9915
9916 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9917 {
9918 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9919 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9920 struct cfg80211_coalesce new_coalesce = {};
9921 struct cfg80211_coalesce *n_coalesce;
9922 int err, rem_rule, n_rules = 0, i, j;
9923 struct nlattr *rule;
9924 struct cfg80211_coalesce_rules *tmp_rule;
9925
9926 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9927 return -EOPNOTSUPP;
9928
9929 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9930 cfg80211_rdev_free_coalesce(rdev);
9931 rdev_set_coalesce(rdev, NULL);
9932 return 0;
9933 }
9934
9935 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9936 rem_rule)
9937 n_rules++;
9938 if (n_rules > coalesce->n_rules)
9939 return -EINVAL;
9940
9941 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9942 GFP_KERNEL);
9943 if (!new_coalesce.rules)
9944 return -ENOMEM;
9945
9946 new_coalesce.n_rules = n_rules;
9947 i = 0;
9948
9949 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9950 rem_rule) {
9951 err = nl80211_parse_coalesce_rule(rdev, rule,
9952 &new_coalesce.rules[i]);
9953 if (err)
9954 goto error;
9955
9956 i++;
9957 }
9958
9959 err = rdev_set_coalesce(rdev, &new_coalesce);
9960 if (err)
9961 goto error;
9962
9963 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9964 if (!n_coalesce) {
9965 err = -ENOMEM;
9966 goto error;
9967 }
9968 cfg80211_rdev_free_coalesce(rdev);
9969 rdev->coalesce = n_coalesce;
9970
9971 return 0;
9972 error:
9973 for (i = 0; i < new_coalesce.n_rules; i++) {
9974 tmp_rule = &new_coalesce.rules[i];
9975 for (j = 0; j < tmp_rule->n_patterns; j++)
9976 kfree(tmp_rule->patterns[j].mask);
9977 kfree(tmp_rule->patterns);
9978 }
9979 kfree(new_coalesce.rules);
9980
9981 return err;
9982 }
9983
9984 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9985 {
9986 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9987 struct net_device *dev = info->user_ptr[1];
9988 struct wireless_dev *wdev = dev->ieee80211_ptr;
9989 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9990 struct cfg80211_gtk_rekey_data rekey_data;
9991 int err;
9992
9993 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9994 return -EINVAL;
9995
9996 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9997 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9998 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9999 nl80211_rekey_policy);
10000 if (err)
10001 return err;
10002
10003 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10004 return -ERANGE;
10005 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10006 return -ERANGE;
10007 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10008 return -ERANGE;
10009
10010 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10011 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10012 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10013
10014 wdev_lock(wdev);
10015 if (!wdev->current_bss) {
10016 err = -ENOTCONN;
10017 goto out;
10018 }
10019
10020 if (!rdev->ops->set_rekey_data) {
10021 err = -EOPNOTSUPP;
10022 goto out;
10023 }
10024
10025 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10026 out:
10027 wdev_unlock(wdev);
10028 return err;
10029 }
10030
10031 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10032 struct genl_info *info)
10033 {
10034 struct net_device *dev = info->user_ptr[1];
10035 struct wireless_dev *wdev = dev->ieee80211_ptr;
10036
10037 if (wdev->iftype != NL80211_IFTYPE_AP &&
10038 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10039 return -EINVAL;
10040
10041 if (wdev->ap_unexpected_nlportid)
10042 return -EBUSY;
10043
10044 wdev->ap_unexpected_nlportid = info->snd_portid;
10045 return 0;
10046 }
10047
10048 static int nl80211_probe_client(struct sk_buff *skb,
10049 struct genl_info *info)
10050 {
10051 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10052 struct net_device *dev = info->user_ptr[1];
10053 struct wireless_dev *wdev = dev->ieee80211_ptr;
10054 struct sk_buff *msg;
10055 void *hdr;
10056 const u8 *addr;
10057 u64 cookie;
10058 int err;
10059
10060 if (wdev->iftype != NL80211_IFTYPE_AP &&
10061 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10062 return -EOPNOTSUPP;
10063
10064 if (!info->attrs[NL80211_ATTR_MAC])
10065 return -EINVAL;
10066
10067 if (!rdev->ops->probe_client)
10068 return -EOPNOTSUPP;
10069
10070 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10071 if (!msg)
10072 return -ENOMEM;
10073
10074 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10075 NL80211_CMD_PROBE_CLIENT);
10076 if (!hdr) {
10077 err = -ENOBUFS;
10078 goto free_msg;
10079 }
10080
10081 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10082
10083 err = rdev_probe_client(rdev, dev, addr, &cookie);
10084 if (err)
10085 goto free_msg;
10086
10087 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10088 NL80211_ATTR_PAD))
10089 goto nla_put_failure;
10090
10091 genlmsg_end(msg, hdr);
10092
10093 return genlmsg_reply(msg, info);
10094
10095 nla_put_failure:
10096 err = -ENOBUFS;
10097 free_msg:
10098 nlmsg_free(msg);
10099 return err;
10100 }
10101
10102 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10103 {
10104 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10105 struct cfg80211_beacon_registration *reg, *nreg;
10106 int rv;
10107
10108 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10109 return -EOPNOTSUPP;
10110
10111 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10112 if (!nreg)
10113 return -ENOMEM;
10114
10115 /* First, check if already registered. */
10116 spin_lock_bh(&rdev->beacon_registrations_lock);
10117 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10118 if (reg->nlportid == info->snd_portid) {
10119 rv = -EALREADY;
10120 goto out_err;
10121 }
10122 }
10123 /* Add it to the list */
10124 nreg->nlportid = info->snd_portid;
10125 list_add(&nreg->list, &rdev->beacon_registrations);
10126
10127 spin_unlock_bh(&rdev->beacon_registrations_lock);
10128
10129 return 0;
10130 out_err:
10131 spin_unlock_bh(&rdev->beacon_registrations_lock);
10132 kfree(nreg);
10133 return rv;
10134 }
10135
10136 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10137 {
10138 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10139 struct wireless_dev *wdev = info->user_ptr[1];
10140 int err;
10141
10142 if (!rdev->ops->start_p2p_device)
10143 return -EOPNOTSUPP;
10144
10145 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10146 return -EOPNOTSUPP;
10147
10148 if (wdev->p2p_started)
10149 return 0;
10150
10151 if (rfkill_blocked(rdev->rfkill))
10152 return -ERFKILL;
10153
10154 err = rdev_start_p2p_device(rdev, wdev);
10155 if (err)
10156 return err;
10157
10158 wdev->p2p_started = true;
10159 rdev->opencount++;
10160
10161 return 0;
10162 }
10163
10164 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10165 {
10166 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10167 struct wireless_dev *wdev = info->user_ptr[1];
10168
10169 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10170 return -EOPNOTSUPP;
10171
10172 if (!rdev->ops->stop_p2p_device)
10173 return -EOPNOTSUPP;
10174
10175 cfg80211_stop_p2p_device(rdev, wdev);
10176
10177 return 0;
10178 }
10179
10180 static int nl80211_get_protocol_features(struct sk_buff *skb,
10181 struct genl_info *info)
10182 {
10183 void *hdr;
10184 struct sk_buff *msg;
10185
10186 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10187 if (!msg)
10188 return -ENOMEM;
10189
10190 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10191 NL80211_CMD_GET_PROTOCOL_FEATURES);
10192 if (!hdr)
10193 goto nla_put_failure;
10194
10195 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10196 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10197 goto nla_put_failure;
10198
10199 genlmsg_end(msg, hdr);
10200 return genlmsg_reply(msg, info);
10201
10202 nla_put_failure:
10203 kfree_skb(msg);
10204 return -ENOBUFS;
10205 }
10206
10207 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10208 {
10209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10210 struct cfg80211_update_ft_ies_params ft_params;
10211 struct net_device *dev = info->user_ptr[1];
10212
10213 if (!rdev->ops->update_ft_ies)
10214 return -EOPNOTSUPP;
10215
10216 if (!info->attrs[NL80211_ATTR_MDID] ||
10217 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10218 return -EINVAL;
10219
10220 memset(&ft_params, 0, sizeof(ft_params));
10221 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10222 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10223 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10224
10225 return rdev_update_ft_ies(rdev, dev, &ft_params);
10226 }
10227
10228 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10229 struct genl_info *info)
10230 {
10231 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10232 struct wireless_dev *wdev = info->user_ptr[1];
10233 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10234 u16 duration;
10235 int ret;
10236
10237 if (!rdev->ops->crit_proto_start)
10238 return -EOPNOTSUPP;
10239
10240 if (WARN_ON(!rdev->ops->crit_proto_stop))
10241 return -EINVAL;
10242
10243 if (rdev->crit_proto_nlportid)
10244 return -EBUSY;
10245
10246 /* determine protocol if provided */
10247 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10248 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10249
10250 if (proto >= NUM_NL80211_CRIT_PROTO)
10251 return -EINVAL;
10252
10253 /* timeout must be provided */
10254 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10255 return -EINVAL;
10256
10257 duration =
10258 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10259
10260 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10261 return -ERANGE;
10262
10263 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10264 if (!ret)
10265 rdev->crit_proto_nlportid = info->snd_portid;
10266
10267 return ret;
10268 }
10269
10270 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10271 struct genl_info *info)
10272 {
10273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10274 struct wireless_dev *wdev = info->user_ptr[1];
10275
10276 if (!rdev->ops->crit_proto_stop)
10277 return -EOPNOTSUPP;
10278
10279 if (rdev->crit_proto_nlportid) {
10280 rdev->crit_proto_nlportid = 0;
10281 rdev_crit_proto_stop(rdev, wdev);
10282 }
10283 return 0;
10284 }
10285
10286 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10287 {
10288 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10289 struct wireless_dev *wdev =
10290 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10291 int i, err;
10292 u32 vid, subcmd;
10293
10294 if (!rdev->wiphy.vendor_commands)
10295 return -EOPNOTSUPP;
10296
10297 if (IS_ERR(wdev)) {
10298 err = PTR_ERR(wdev);
10299 if (err != -EINVAL)
10300 return err;
10301 wdev = NULL;
10302 } else if (wdev->wiphy != &rdev->wiphy) {
10303 return -EINVAL;
10304 }
10305
10306 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10307 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10308 return -EINVAL;
10309
10310 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10311 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10312 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10313 const struct wiphy_vendor_command *vcmd;
10314 void *data = NULL;
10315 int len = 0;
10316
10317 vcmd = &rdev->wiphy.vendor_commands[i];
10318
10319 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10320 continue;
10321
10322 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10323 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10324 if (!wdev)
10325 return -EINVAL;
10326 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10327 !wdev->netdev)
10328 return -EINVAL;
10329
10330 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10331 if (wdev->netdev &&
10332 !netif_running(wdev->netdev))
10333 return -ENETDOWN;
10334 if (!wdev->netdev && !wdev->p2p_started)
10335 return -ENETDOWN;
10336 }
10337
10338 if (!vcmd->doit)
10339 return -EOPNOTSUPP;
10340 } else {
10341 wdev = NULL;
10342 }
10343
10344 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10345 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10346 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10347 }
10348
10349 rdev->cur_cmd_info = info;
10350 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10351 data, len);
10352 rdev->cur_cmd_info = NULL;
10353 return err;
10354 }
10355
10356 return -EOPNOTSUPP;
10357 }
10358
10359 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10360 struct netlink_callback *cb,
10361 struct cfg80211_registered_device **rdev,
10362 struct wireless_dev **wdev)
10363 {
10364 u32 vid, subcmd;
10365 unsigned int i;
10366 int vcmd_idx = -1;
10367 int err;
10368 void *data = NULL;
10369 unsigned int data_len = 0;
10370
10371 rtnl_lock();
10372
10373 if (cb->args[0]) {
10374 /* subtract the 1 again here */
10375 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10376 struct wireless_dev *tmp;
10377
10378 if (!wiphy) {
10379 err = -ENODEV;
10380 goto out_unlock;
10381 }
10382 *rdev = wiphy_to_rdev(wiphy);
10383 *wdev = NULL;
10384
10385 if (cb->args[1]) {
10386 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
10387 if (tmp->identifier == cb->args[1] - 1) {
10388 *wdev = tmp;
10389 break;
10390 }
10391 }
10392 }
10393
10394 /* keep rtnl locked in successful case */
10395 return 0;
10396 }
10397
10398 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10399 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10400 nl80211_policy);
10401 if (err)
10402 goto out_unlock;
10403
10404 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10405 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10406 err = -EINVAL;
10407 goto out_unlock;
10408 }
10409
10410 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10411 nl80211_fam.attrbuf);
10412 if (IS_ERR(*wdev))
10413 *wdev = NULL;
10414
10415 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10416 nl80211_fam.attrbuf);
10417 if (IS_ERR(*rdev)) {
10418 err = PTR_ERR(*rdev);
10419 goto out_unlock;
10420 }
10421
10422 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10423 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10424
10425 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10426 const struct wiphy_vendor_command *vcmd;
10427
10428 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10429
10430 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10431 continue;
10432
10433 if (!vcmd->dumpit) {
10434 err = -EOPNOTSUPP;
10435 goto out_unlock;
10436 }
10437
10438 vcmd_idx = i;
10439 break;
10440 }
10441
10442 if (vcmd_idx < 0) {
10443 err = -EOPNOTSUPP;
10444 goto out_unlock;
10445 }
10446
10447 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10448 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10449 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10450 }
10451
10452 /* 0 is the first index - add 1 to parse only once */
10453 cb->args[0] = (*rdev)->wiphy_idx + 1;
10454 /* add 1 to know if it was NULL */
10455 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10456 cb->args[2] = vcmd_idx;
10457 cb->args[3] = (unsigned long)data;
10458 cb->args[4] = data_len;
10459
10460 /* keep rtnl locked in successful case */
10461 return 0;
10462 out_unlock:
10463 rtnl_unlock();
10464 return err;
10465 }
10466
10467 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10468 struct netlink_callback *cb)
10469 {
10470 struct cfg80211_registered_device *rdev;
10471 struct wireless_dev *wdev;
10472 unsigned int vcmd_idx;
10473 const struct wiphy_vendor_command *vcmd;
10474 void *data;
10475 int data_len;
10476 int err;
10477 struct nlattr *vendor_data;
10478
10479 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10480 if (err)
10481 return err;
10482
10483 vcmd_idx = cb->args[2];
10484 data = (void *)cb->args[3];
10485 data_len = cb->args[4];
10486 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10487
10488 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10489 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10490 if (!wdev)
10491 return -EINVAL;
10492 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10493 !wdev->netdev)
10494 return -EINVAL;
10495
10496 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10497 if (wdev->netdev &&
10498 !netif_running(wdev->netdev))
10499 return -ENETDOWN;
10500 if (!wdev->netdev && !wdev->p2p_started)
10501 return -ENETDOWN;
10502 }
10503 }
10504
10505 while (1) {
10506 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10507 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10508 NL80211_CMD_VENDOR);
10509 if (!hdr)
10510 break;
10511
10512 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10513 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10514 wdev_id(wdev),
10515 NL80211_ATTR_PAD))) {
10516 genlmsg_cancel(skb, hdr);
10517 break;
10518 }
10519
10520 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10521 if (!vendor_data) {
10522 genlmsg_cancel(skb, hdr);
10523 break;
10524 }
10525
10526 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10527 (unsigned long *)&cb->args[5]);
10528 nla_nest_end(skb, vendor_data);
10529
10530 if (err == -ENOBUFS || err == -ENOENT) {
10531 genlmsg_cancel(skb, hdr);
10532 break;
10533 } else if (err) {
10534 genlmsg_cancel(skb, hdr);
10535 goto out;
10536 }
10537
10538 genlmsg_end(skb, hdr);
10539 }
10540
10541 err = skb->len;
10542 out:
10543 rtnl_unlock();
10544 return err;
10545 }
10546
10547 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10548 enum nl80211_commands cmd,
10549 enum nl80211_attrs attr,
10550 int approxlen)
10551 {
10552 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10553
10554 if (WARN_ON(!rdev->cur_cmd_info))
10555 return NULL;
10556
10557 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10558 rdev->cur_cmd_info->snd_portid,
10559 rdev->cur_cmd_info->snd_seq,
10560 cmd, attr, NULL, GFP_KERNEL);
10561 }
10562 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10563
10564 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10565 {
10566 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10567 void *hdr = ((void **)skb->cb)[1];
10568 struct nlattr *data = ((void **)skb->cb)[2];
10569
10570 /* clear CB data for netlink core to own from now on */
10571 memset(skb->cb, 0, sizeof(skb->cb));
10572
10573 if (WARN_ON(!rdev->cur_cmd_info)) {
10574 kfree_skb(skb);
10575 return -EINVAL;
10576 }
10577
10578 nla_nest_end(skb, data);
10579 genlmsg_end(skb, hdr);
10580 return genlmsg_reply(skb, rdev->cur_cmd_info);
10581 }
10582 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10583
10584
10585 static int nl80211_set_qos_map(struct sk_buff *skb,
10586 struct genl_info *info)
10587 {
10588 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10589 struct cfg80211_qos_map *qos_map = NULL;
10590 struct net_device *dev = info->user_ptr[1];
10591 u8 *pos, len, num_des, des_len, des;
10592 int ret;
10593
10594 if (!rdev->ops->set_qos_map)
10595 return -EOPNOTSUPP;
10596
10597 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10598 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10599 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10600
10601 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10602 len > IEEE80211_QOS_MAP_LEN_MAX)
10603 return -EINVAL;
10604
10605 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10606 if (!qos_map)
10607 return -ENOMEM;
10608
10609 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10610 if (num_des) {
10611 des_len = num_des *
10612 sizeof(struct cfg80211_dscp_exception);
10613 memcpy(qos_map->dscp_exception, pos, des_len);
10614 qos_map->num_des = num_des;
10615 for (des = 0; des < num_des; des++) {
10616 if (qos_map->dscp_exception[des].up > 7) {
10617 kfree(qos_map);
10618 return -EINVAL;
10619 }
10620 }
10621 pos += des_len;
10622 }
10623 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10624 }
10625
10626 wdev_lock(dev->ieee80211_ptr);
10627 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10628 if (!ret)
10629 ret = rdev_set_qos_map(rdev, dev, qos_map);
10630 wdev_unlock(dev->ieee80211_ptr);
10631
10632 kfree(qos_map);
10633 return ret;
10634 }
10635
10636 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10637 {
10638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10639 struct net_device *dev = info->user_ptr[1];
10640 struct wireless_dev *wdev = dev->ieee80211_ptr;
10641 const u8 *peer;
10642 u8 tsid, up;
10643 u16 admitted_time = 0;
10644 int err;
10645
10646 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10647 return -EOPNOTSUPP;
10648
10649 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10650 !info->attrs[NL80211_ATTR_USER_PRIO])
10651 return -EINVAL;
10652
10653 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10654 if (tsid >= IEEE80211_NUM_TIDS)
10655 return -EINVAL;
10656
10657 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10658 if (up >= IEEE80211_NUM_UPS)
10659 return -EINVAL;
10660
10661 /* WMM uses TIDs 0-7 even for TSPEC */
10662 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10663 /* TODO: handle 802.11 TSPEC/admission control
10664 * need more attributes for that (e.g. BA session requirement);
10665 * change the WMM adminssion test above to allow both then
10666 */
10667 return -EINVAL;
10668 }
10669
10670 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10671
10672 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10673 admitted_time =
10674 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10675 if (!admitted_time)
10676 return -EINVAL;
10677 }
10678
10679 wdev_lock(wdev);
10680 switch (wdev->iftype) {
10681 case NL80211_IFTYPE_STATION:
10682 case NL80211_IFTYPE_P2P_CLIENT:
10683 if (wdev->current_bss)
10684 break;
10685 err = -ENOTCONN;
10686 goto out;
10687 default:
10688 err = -EOPNOTSUPP;
10689 goto out;
10690 }
10691
10692 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10693
10694 out:
10695 wdev_unlock(wdev);
10696 return err;
10697 }
10698
10699 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10700 {
10701 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10702 struct net_device *dev = info->user_ptr[1];
10703 struct wireless_dev *wdev = dev->ieee80211_ptr;
10704 const u8 *peer;
10705 u8 tsid;
10706 int err;
10707
10708 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10709 return -EINVAL;
10710
10711 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10712 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10713
10714 wdev_lock(wdev);
10715 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10716 wdev_unlock(wdev);
10717
10718 return err;
10719 }
10720
10721 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10722 struct genl_info *info)
10723 {
10724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10725 struct net_device *dev = info->user_ptr[1];
10726 struct wireless_dev *wdev = dev->ieee80211_ptr;
10727 struct cfg80211_chan_def chandef = {};
10728 const u8 *addr;
10729 u8 oper_class;
10730 int err;
10731
10732 if (!rdev->ops->tdls_channel_switch ||
10733 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10734 return -EOPNOTSUPP;
10735
10736 switch (dev->ieee80211_ptr->iftype) {
10737 case NL80211_IFTYPE_STATION:
10738 case NL80211_IFTYPE_P2P_CLIENT:
10739 break;
10740 default:
10741 return -EOPNOTSUPP;
10742 }
10743
10744 if (!info->attrs[NL80211_ATTR_MAC] ||
10745 !info->attrs[NL80211_ATTR_OPER_CLASS])
10746 return -EINVAL;
10747
10748 err = nl80211_parse_chandef(rdev, info, &chandef);
10749 if (err)
10750 return err;
10751
10752 /*
10753 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10754 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10755 * specification is not defined for them.
10756 */
10757 if (chandef.chan->band == NL80211_BAND_2GHZ &&
10758 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10759 chandef.width != NL80211_CHAN_WIDTH_20)
10760 return -EINVAL;
10761
10762 /* we will be active on the TDLS link */
10763 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10764 wdev->iftype))
10765 return -EINVAL;
10766
10767 /* don't allow switching to DFS channels */
10768 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10769 return -EINVAL;
10770
10771 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10772 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10773
10774 wdev_lock(wdev);
10775 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10776 wdev_unlock(wdev);
10777
10778 return err;
10779 }
10780
10781 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10782 struct genl_info *info)
10783 {
10784 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10785 struct net_device *dev = info->user_ptr[1];
10786 struct wireless_dev *wdev = dev->ieee80211_ptr;
10787 const u8 *addr;
10788
10789 if (!rdev->ops->tdls_channel_switch ||
10790 !rdev->ops->tdls_cancel_channel_switch ||
10791 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10792 return -EOPNOTSUPP;
10793
10794 switch (dev->ieee80211_ptr->iftype) {
10795 case NL80211_IFTYPE_STATION:
10796 case NL80211_IFTYPE_P2P_CLIENT:
10797 break;
10798 default:
10799 return -EOPNOTSUPP;
10800 }
10801
10802 if (!info->attrs[NL80211_ATTR_MAC])
10803 return -EINVAL;
10804
10805 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10806
10807 wdev_lock(wdev);
10808 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10809 wdev_unlock(wdev);
10810
10811 return 0;
10812 }
10813
10814 #define NL80211_FLAG_NEED_WIPHY 0x01
10815 #define NL80211_FLAG_NEED_NETDEV 0x02
10816 #define NL80211_FLAG_NEED_RTNL 0x04
10817 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10818 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10819 NL80211_FLAG_CHECK_NETDEV_UP)
10820 #define NL80211_FLAG_NEED_WDEV 0x10
10821 /* If a netdev is associated, it must be UP, P2P must be started */
10822 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10823 NL80211_FLAG_CHECK_NETDEV_UP)
10824 #define NL80211_FLAG_CLEAR_SKB 0x20
10825
10826 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10827 struct genl_info *info)
10828 {
10829 struct cfg80211_registered_device *rdev;
10830 struct wireless_dev *wdev;
10831 struct net_device *dev;
10832 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10833
10834 if (rtnl)
10835 rtnl_lock();
10836
10837 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10838 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10839 if (IS_ERR(rdev)) {
10840 if (rtnl)
10841 rtnl_unlock();
10842 return PTR_ERR(rdev);
10843 }
10844 info->user_ptr[0] = rdev;
10845 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10846 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10847 ASSERT_RTNL();
10848
10849 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10850 info->attrs);
10851 if (IS_ERR(wdev)) {
10852 if (rtnl)
10853 rtnl_unlock();
10854 return PTR_ERR(wdev);
10855 }
10856
10857 dev = wdev->netdev;
10858 rdev = wiphy_to_rdev(wdev->wiphy);
10859
10860 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10861 if (!dev) {
10862 if (rtnl)
10863 rtnl_unlock();
10864 return -EINVAL;
10865 }
10866
10867 info->user_ptr[1] = dev;
10868 } else {
10869 info->user_ptr[1] = wdev;
10870 }
10871
10872 if (dev) {
10873 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10874 !netif_running(dev)) {
10875 if (rtnl)
10876 rtnl_unlock();
10877 return -ENETDOWN;
10878 }
10879
10880 dev_hold(dev);
10881 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10882 if (!wdev->p2p_started) {
10883 if (rtnl)
10884 rtnl_unlock();
10885 return -ENETDOWN;
10886 }
10887 }
10888
10889 info->user_ptr[0] = rdev;
10890 }
10891
10892 return 0;
10893 }
10894
10895 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10896 struct genl_info *info)
10897 {
10898 if (info->user_ptr[1]) {
10899 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10900 struct wireless_dev *wdev = info->user_ptr[1];
10901
10902 if (wdev->netdev)
10903 dev_put(wdev->netdev);
10904 } else {
10905 dev_put(info->user_ptr[1]);
10906 }
10907 }
10908
10909 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10910 rtnl_unlock();
10911
10912 /* If needed, clear the netlink message payload from the SKB
10913 * as it might contain key data that shouldn't stick around on
10914 * the heap after the SKB is freed. The netlink message header
10915 * is still needed for further processing, so leave it intact.
10916 */
10917 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10918 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10919
10920 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10921 }
10922 }
10923
10924 static const struct genl_ops nl80211_ops[] = {
10925 {
10926 .cmd = NL80211_CMD_GET_WIPHY,
10927 .doit = nl80211_get_wiphy,
10928 .dumpit = nl80211_dump_wiphy,
10929 .done = nl80211_dump_wiphy_done,
10930 .policy = nl80211_policy,
10931 /* can be retrieved by unprivileged users */
10932 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10933 NL80211_FLAG_NEED_RTNL,
10934 },
10935 {
10936 .cmd = NL80211_CMD_SET_WIPHY,
10937 .doit = nl80211_set_wiphy,
10938 .policy = nl80211_policy,
10939 .flags = GENL_ADMIN_PERM,
10940 .internal_flags = NL80211_FLAG_NEED_RTNL,
10941 },
10942 {
10943 .cmd = NL80211_CMD_GET_INTERFACE,
10944 .doit = nl80211_get_interface,
10945 .dumpit = nl80211_dump_interface,
10946 .policy = nl80211_policy,
10947 /* can be retrieved by unprivileged users */
10948 .internal_flags = NL80211_FLAG_NEED_WDEV |
10949 NL80211_FLAG_NEED_RTNL,
10950 },
10951 {
10952 .cmd = NL80211_CMD_SET_INTERFACE,
10953 .doit = nl80211_set_interface,
10954 .policy = nl80211_policy,
10955 .flags = GENL_ADMIN_PERM,
10956 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10957 NL80211_FLAG_NEED_RTNL,
10958 },
10959 {
10960 .cmd = NL80211_CMD_NEW_INTERFACE,
10961 .doit = nl80211_new_interface,
10962 .policy = nl80211_policy,
10963 .flags = GENL_ADMIN_PERM,
10964 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10965 NL80211_FLAG_NEED_RTNL,
10966 },
10967 {
10968 .cmd = NL80211_CMD_DEL_INTERFACE,
10969 .doit = nl80211_del_interface,
10970 .policy = nl80211_policy,
10971 .flags = GENL_ADMIN_PERM,
10972 .internal_flags = NL80211_FLAG_NEED_WDEV |
10973 NL80211_FLAG_NEED_RTNL,
10974 },
10975 {
10976 .cmd = NL80211_CMD_GET_KEY,
10977 .doit = nl80211_get_key,
10978 .policy = nl80211_policy,
10979 .flags = GENL_ADMIN_PERM,
10980 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10981 NL80211_FLAG_NEED_RTNL,
10982 },
10983 {
10984 .cmd = NL80211_CMD_SET_KEY,
10985 .doit = nl80211_set_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_NEW_KEY,
10994 .doit = nl80211_new_key,
10995 .policy = nl80211_policy,
10996 .flags = GENL_ADMIN_PERM,
10997 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10998 NL80211_FLAG_NEED_RTNL |
10999 NL80211_FLAG_CLEAR_SKB,
11000 },
11001 {
11002 .cmd = NL80211_CMD_DEL_KEY,
11003 .doit = nl80211_del_key,
11004 .policy = nl80211_policy,
11005 .flags = GENL_ADMIN_PERM,
11006 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11007 NL80211_FLAG_NEED_RTNL,
11008 },
11009 {
11010 .cmd = NL80211_CMD_SET_BEACON,
11011 .policy = nl80211_policy,
11012 .flags = GENL_ADMIN_PERM,
11013 .doit = nl80211_set_beacon,
11014 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11015 NL80211_FLAG_NEED_RTNL,
11016 },
11017 {
11018 .cmd = NL80211_CMD_START_AP,
11019 .policy = nl80211_policy,
11020 .flags = GENL_ADMIN_PERM,
11021 .doit = nl80211_start_ap,
11022 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11023 NL80211_FLAG_NEED_RTNL,
11024 },
11025 {
11026 .cmd = NL80211_CMD_STOP_AP,
11027 .policy = nl80211_policy,
11028 .flags = GENL_ADMIN_PERM,
11029 .doit = nl80211_stop_ap,
11030 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11031 NL80211_FLAG_NEED_RTNL,
11032 },
11033 {
11034 .cmd = NL80211_CMD_GET_STATION,
11035 .doit = nl80211_get_station,
11036 .dumpit = nl80211_dump_station,
11037 .policy = nl80211_policy,
11038 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11039 NL80211_FLAG_NEED_RTNL,
11040 },
11041 {
11042 .cmd = NL80211_CMD_SET_STATION,
11043 .doit = nl80211_set_station,
11044 .policy = nl80211_policy,
11045 .flags = GENL_ADMIN_PERM,
11046 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11047 NL80211_FLAG_NEED_RTNL,
11048 },
11049 {
11050 .cmd = NL80211_CMD_NEW_STATION,
11051 .doit = nl80211_new_station,
11052 .policy = nl80211_policy,
11053 .flags = GENL_ADMIN_PERM,
11054 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11055 NL80211_FLAG_NEED_RTNL,
11056 },
11057 {
11058 .cmd = NL80211_CMD_DEL_STATION,
11059 .doit = nl80211_del_station,
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_MPATH,
11067 .doit = nl80211_get_mpath,
11068 .dumpit = nl80211_dump_mpath,
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_GET_MPP,
11076 .doit = nl80211_get_mpp,
11077 .dumpit = nl80211_dump_mpp,
11078 .policy = nl80211_policy,
11079 .flags = GENL_ADMIN_PERM,
11080 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11081 NL80211_FLAG_NEED_RTNL,
11082 },
11083 {
11084 .cmd = NL80211_CMD_SET_MPATH,
11085 .doit = nl80211_set_mpath,
11086 .policy = nl80211_policy,
11087 .flags = GENL_ADMIN_PERM,
11088 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11089 NL80211_FLAG_NEED_RTNL,
11090 },
11091 {
11092 .cmd = NL80211_CMD_NEW_MPATH,
11093 .doit = nl80211_new_mpath,
11094 .policy = nl80211_policy,
11095 .flags = GENL_ADMIN_PERM,
11096 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11097 NL80211_FLAG_NEED_RTNL,
11098 },
11099 {
11100 .cmd = NL80211_CMD_DEL_MPATH,
11101 .doit = nl80211_del_mpath,
11102 .policy = nl80211_policy,
11103 .flags = GENL_ADMIN_PERM,
11104 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11105 NL80211_FLAG_NEED_RTNL,
11106 },
11107 {
11108 .cmd = NL80211_CMD_SET_BSS,
11109 .doit = nl80211_set_bss,
11110 .policy = nl80211_policy,
11111 .flags = GENL_ADMIN_PERM,
11112 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11113 NL80211_FLAG_NEED_RTNL,
11114 },
11115 {
11116 .cmd = NL80211_CMD_GET_REG,
11117 .doit = nl80211_get_reg_do,
11118 .dumpit = nl80211_get_reg_dump,
11119 .policy = nl80211_policy,
11120 .internal_flags = NL80211_FLAG_NEED_RTNL,
11121 /* can be retrieved by unprivileged users */
11122 },
11123 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
11124 {
11125 .cmd = NL80211_CMD_SET_REG,
11126 .doit = nl80211_set_reg,
11127 .policy = nl80211_policy,
11128 .flags = GENL_ADMIN_PERM,
11129 .internal_flags = NL80211_FLAG_NEED_RTNL,
11130 },
11131 #endif
11132 {
11133 .cmd = NL80211_CMD_REQ_SET_REG,
11134 .doit = nl80211_req_set_reg,
11135 .policy = nl80211_policy,
11136 .flags = GENL_ADMIN_PERM,
11137 },
11138 {
11139 .cmd = NL80211_CMD_GET_MESH_CONFIG,
11140 .doit = nl80211_get_mesh_config,
11141 .policy = nl80211_policy,
11142 /* can be retrieved by unprivileged users */
11143 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11144 NL80211_FLAG_NEED_RTNL,
11145 },
11146 {
11147 .cmd = NL80211_CMD_SET_MESH_CONFIG,
11148 .doit = nl80211_update_mesh_config,
11149 .policy = nl80211_policy,
11150 .flags = GENL_ADMIN_PERM,
11151 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11152 NL80211_FLAG_NEED_RTNL,
11153 },
11154 {
11155 .cmd = NL80211_CMD_TRIGGER_SCAN,
11156 .doit = nl80211_trigger_scan,
11157 .policy = nl80211_policy,
11158 .flags = GENL_ADMIN_PERM,
11159 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11160 NL80211_FLAG_NEED_RTNL,
11161 },
11162 {
11163 .cmd = NL80211_CMD_ABORT_SCAN,
11164 .doit = nl80211_abort_scan,
11165 .policy = nl80211_policy,
11166 .flags = GENL_ADMIN_PERM,
11167 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11168 NL80211_FLAG_NEED_RTNL,
11169 },
11170 {
11171 .cmd = NL80211_CMD_GET_SCAN,
11172 .policy = nl80211_policy,
11173 .dumpit = nl80211_dump_scan,
11174 },
11175 {
11176 .cmd = NL80211_CMD_START_SCHED_SCAN,
11177 .doit = nl80211_start_sched_scan,
11178 .policy = nl80211_policy,
11179 .flags = GENL_ADMIN_PERM,
11180 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11181 NL80211_FLAG_NEED_RTNL,
11182 },
11183 {
11184 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11185 .doit = nl80211_stop_sched_scan,
11186 .policy = nl80211_policy,
11187 .flags = GENL_ADMIN_PERM,
11188 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11189 NL80211_FLAG_NEED_RTNL,
11190 },
11191 {
11192 .cmd = NL80211_CMD_AUTHENTICATE,
11193 .doit = nl80211_authenticate,
11194 .policy = nl80211_policy,
11195 .flags = GENL_ADMIN_PERM,
11196 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11197 NL80211_FLAG_NEED_RTNL |
11198 NL80211_FLAG_CLEAR_SKB,
11199 },
11200 {
11201 .cmd = NL80211_CMD_ASSOCIATE,
11202 .doit = nl80211_associate,
11203 .policy = nl80211_policy,
11204 .flags = GENL_ADMIN_PERM,
11205 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11206 NL80211_FLAG_NEED_RTNL,
11207 },
11208 {
11209 .cmd = NL80211_CMD_DEAUTHENTICATE,
11210 .doit = nl80211_deauthenticate,
11211 .policy = nl80211_policy,
11212 .flags = GENL_ADMIN_PERM,
11213 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11214 NL80211_FLAG_NEED_RTNL,
11215 },
11216 {
11217 .cmd = NL80211_CMD_DISASSOCIATE,
11218 .doit = nl80211_disassociate,
11219 .policy = nl80211_policy,
11220 .flags = GENL_ADMIN_PERM,
11221 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11222 NL80211_FLAG_NEED_RTNL,
11223 },
11224 {
11225 .cmd = NL80211_CMD_JOIN_IBSS,
11226 .doit = nl80211_join_ibss,
11227 .policy = nl80211_policy,
11228 .flags = GENL_ADMIN_PERM,
11229 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11230 NL80211_FLAG_NEED_RTNL,
11231 },
11232 {
11233 .cmd = NL80211_CMD_LEAVE_IBSS,
11234 .doit = nl80211_leave_ibss,
11235 .policy = nl80211_policy,
11236 .flags = GENL_ADMIN_PERM,
11237 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11238 NL80211_FLAG_NEED_RTNL,
11239 },
11240 #ifdef CONFIG_NL80211_TESTMODE
11241 {
11242 .cmd = NL80211_CMD_TESTMODE,
11243 .doit = nl80211_testmode_do,
11244 .dumpit = nl80211_testmode_dump,
11245 .policy = nl80211_policy,
11246 .flags = GENL_ADMIN_PERM,
11247 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11248 NL80211_FLAG_NEED_RTNL,
11249 },
11250 #endif
11251 {
11252 .cmd = NL80211_CMD_CONNECT,
11253 .doit = nl80211_connect,
11254 .policy = nl80211_policy,
11255 .flags = GENL_ADMIN_PERM,
11256 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11257 NL80211_FLAG_NEED_RTNL,
11258 },
11259 {
11260 .cmd = NL80211_CMD_DISCONNECT,
11261 .doit = nl80211_disconnect,
11262 .policy = nl80211_policy,
11263 .flags = GENL_ADMIN_PERM,
11264 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11265 NL80211_FLAG_NEED_RTNL,
11266 },
11267 {
11268 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11269 .doit = nl80211_wiphy_netns,
11270 .policy = nl80211_policy,
11271 .flags = GENL_ADMIN_PERM,
11272 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11273 NL80211_FLAG_NEED_RTNL,
11274 },
11275 {
11276 .cmd = NL80211_CMD_GET_SURVEY,
11277 .policy = nl80211_policy,
11278 .dumpit = nl80211_dump_survey,
11279 },
11280 {
11281 .cmd = NL80211_CMD_SET_PMKSA,
11282 .doit = nl80211_setdel_pmksa,
11283 .policy = nl80211_policy,
11284 .flags = GENL_ADMIN_PERM,
11285 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11286 NL80211_FLAG_NEED_RTNL,
11287 },
11288 {
11289 .cmd = NL80211_CMD_DEL_PMKSA,
11290 .doit = nl80211_setdel_pmksa,
11291 .policy = nl80211_policy,
11292 .flags = GENL_ADMIN_PERM,
11293 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11294 NL80211_FLAG_NEED_RTNL,
11295 },
11296 {
11297 .cmd = NL80211_CMD_FLUSH_PMKSA,
11298 .doit = nl80211_flush_pmksa,
11299 .policy = nl80211_policy,
11300 .flags = GENL_ADMIN_PERM,
11301 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11302 NL80211_FLAG_NEED_RTNL,
11303 },
11304 {
11305 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11306 .doit = nl80211_remain_on_channel,
11307 .policy = nl80211_policy,
11308 .flags = GENL_ADMIN_PERM,
11309 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11310 NL80211_FLAG_NEED_RTNL,
11311 },
11312 {
11313 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11314 .doit = nl80211_cancel_remain_on_channel,
11315 .policy = nl80211_policy,
11316 .flags = GENL_ADMIN_PERM,
11317 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11318 NL80211_FLAG_NEED_RTNL,
11319 },
11320 {
11321 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11322 .doit = nl80211_set_tx_bitrate_mask,
11323 .policy = nl80211_policy,
11324 .flags = GENL_ADMIN_PERM,
11325 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11326 NL80211_FLAG_NEED_RTNL,
11327 },
11328 {
11329 .cmd = NL80211_CMD_REGISTER_FRAME,
11330 .doit = nl80211_register_mgmt,
11331 .policy = nl80211_policy,
11332 .flags = GENL_ADMIN_PERM,
11333 .internal_flags = NL80211_FLAG_NEED_WDEV |
11334 NL80211_FLAG_NEED_RTNL,
11335 },
11336 {
11337 .cmd = NL80211_CMD_FRAME,
11338 .doit = nl80211_tx_mgmt,
11339 .policy = nl80211_policy,
11340 .flags = GENL_ADMIN_PERM,
11341 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11342 NL80211_FLAG_NEED_RTNL,
11343 },
11344 {
11345 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11346 .doit = nl80211_tx_mgmt_cancel_wait,
11347 .policy = nl80211_policy,
11348 .flags = GENL_ADMIN_PERM,
11349 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11350 NL80211_FLAG_NEED_RTNL,
11351 },
11352 {
11353 .cmd = NL80211_CMD_SET_POWER_SAVE,
11354 .doit = nl80211_set_power_save,
11355 .policy = nl80211_policy,
11356 .flags = GENL_ADMIN_PERM,
11357 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11358 NL80211_FLAG_NEED_RTNL,
11359 },
11360 {
11361 .cmd = NL80211_CMD_GET_POWER_SAVE,
11362 .doit = nl80211_get_power_save,
11363 .policy = nl80211_policy,
11364 /* can be retrieved by unprivileged users */
11365 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11366 NL80211_FLAG_NEED_RTNL,
11367 },
11368 {
11369 .cmd = NL80211_CMD_SET_CQM,
11370 .doit = nl80211_set_cqm,
11371 .policy = nl80211_policy,
11372 .flags = GENL_ADMIN_PERM,
11373 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11374 NL80211_FLAG_NEED_RTNL,
11375 },
11376 {
11377 .cmd = NL80211_CMD_SET_CHANNEL,
11378 .doit = nl80211_set_channel,
11379 .policy = nl80211_policy,
11380 .flags = GENL_ADMIN_PERM,
11381 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11382 NL80211_FLAG_NEED_RTNL,
11383 },
11384 {
11385 .cmd = NL80211_CMD_SET_WDS_PEER,
11386 .doit = nl80211_set_wds_peer,
11387 .policy = nl80211_policy,
11388 .flags = GENL_ADMIN_PERM,
11389 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11390 NL80211_FLAG_NEED_RTNL,
11391 },
11392 {
11393 .cmd = NL80211_CMD_JOIN_MESH,
11394 .doit = nl80211_join_mesh,
11395 .policy = nl80211_policy,
11396 .flags = GENL_ADMIN_PERM,
11397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11398 NL80211_FLAG_NEED_RTNL,
11399 },
11400 {
11401 .cmd = NL80211_CMD_LEAVE_MESH,
11402 .doit = nl80211_leave_mesh,
11403 .policy = nl80211_policy,
11404 .flags = GENL_ADMIN_PERM,
11405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11406 NL80211_FLAG_NEED_RTNL,
11407 },
11408 {
11409 .cmd = NL80211_CMD_JOIN_OCB,
11410 .doit = nl80211_join_ocb,
11411 .policy = nl80211_policy,
11412 .flags = GENL_ADMIN_PERM,
11413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11414 NL80211_FLAG_NEED_RTNL,
11415 },
11416 {
11417 .cmd = NL80211_CMD_LEAVE_OCB,
11418 .doit = nl80211_leave_ocb,
11419 .policy = nl80211_policy,
11420 .flags = GENL_ADMIN_PERM,
11421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11422 NL80211_FLAG_NEED_RTNL,
11423 },
11424 #ifdef CONFIG_PM
11425 {
11426 .cmd = NL80211_CMD_GET_WOWLAN,
11427 .doit = nl80211_get_wowlan,
11428 .policy = nl80211_policy,
11429 /* can be retrieved by unprivileged users */
11430 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11431 NL80211_FLAG_NEED_RTNL,
11432 },
11433 {
11434 .cmd = NL80211_CMD_SET_WOWLAN,
11435 .doit = nl80211_set_wowlan,
11436 .policy = nl80211_policy,
11437 .flags = GENL_ADMIN_PERM,
11438 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11439 NL80211_FLAG_NEED_RTNL,
11440 },
11441 #endif
11442 {
11443 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11444 .doit = nl80211_set_rekey_data,
11445 .policy = nl80211_policy,
11446 .flags = GENL_ADMIN_PERM,
11447 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11448 NL80211_FLAG_NEED_RTNL |
11449 NL80211_FLAG_CLEAR_SKB,
11450 },
11451 {
11452 .cmd = NL80211_CMD_TDLS_MGMT,
11453 .doit = nl80211_tdls_mgmt,
11454 .policy = nl80211_policy,
11455 .flags = GENL_ADMIN_PERM,
11456 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11457 NL80211_FLAG_NEED_RTNL,
11458 },
11459 {
11460 .cmd = NL80211_CMD_TDLS_OPER,
11461 .doit = nl80211_tdls_oper,
11462 .policy = nl80211_policy,
11463 .flags = GENL_ADMIN_PERM,
11464 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11465 NL80211_FLAG_NEED_RTNL,
11466 },
11467 {
11468 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11469 .doit = nl80211_register_unexpected_frame,
11470 .policy = nl80211_policy,
11471 .flags = GENL_ADMIN_PERM,
11472 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11473 NL80211_FLAG_NEED_RTNL,
11474 },
11475 {
11476 .cmd = NL80211_CMD_PROBE_CLIENT,
11477 .doit = nl80211_probe_client,
11478 .policy = nl80211_policy,
11479 .flags = GENL_ADMIN_PERM,
11480 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11481 NL80211_FLAG_NEED_RTNL,
11482 },
11483 {
11484 .cmd = NL80211_CMD_REGISTER_BEACONS,
11485 .doit = nl80211_register_beacons,
11486 .policy = nl80211_policy,
11487 .flags = GENL_ADMIN_PERM,
11488 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11489 NL80211_FLAG_NEED_RTNL,
11490 },
11491 {
11492 .cmd = NL80211_CMD_SET_NOACK_MAP,
11493 .doit = nl80211_set_noack_map,
11494 .policy = nl80211_policy,
11495 .flags = GENL_ADMIN_PERM,
11496 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11497 NL80211_FLAG_NEED_RTNL,
11498 },
11499 {
11500 .cmd = NL80211_CMD_START_P2P_DEVICE,
11501 .doit = nl80211_start_p2p_device,
11502 .policy = nl80211_policy,
11503 .flags = GENL_ADMIN_PERM,
11504 .internal_flags = NL80211_FLAG_NEED_WDEV |
11505 NL80211_FLAG_NEED_RTNL,
11506 },
11507 {
11508 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11509 .doit = nl80211_stop_p2p_device,
11510 .policy = nl80211_policy,
11511 .flags = GENL_ADMIN_PERM,
11512 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11513 NL80211_FLAG_NEED_RTNL,
11514 },
11515 {
11516 .cmd = NL80211_CMD_SET_MCAST_RATE,
11517 .doit = nl80211_set_mcast_rate,
11518 .policy = nl80211_policy,
11519 .flags = GENL_ADMIN_PERM,
11520 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11521 NL80211_FLAG_NEED_RTNL,
11522 },
11523 {
11524 .cmd = NL80211_CMD_SET_MAC_ACL,
11525 .doit = nl80211_set_mac_acl,
11526 .policy = nl80211_policy,
11527 .flags = GENL_ADMIN_PERM,
11528 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11529 NL80211_FLAG_NEED_RTNL,
11530 },
11531 {
11532 .cmd = NL80211_CMD_RADAR_DETECT,
11533 .doit = nl80211_start_radar_detection,
11534 .policy = nl80211_policy,
11535 .flags = GENL_ADMIN_PERM,
11536 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11537 NL80211_FLAG_NEED_RTNL,
11538 },
11539 {
11540 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11541 .doit = nl80211_get_protocol_features,
11542 .policy = nl80211_policy,
11543 },
11544 {
11545 .cmd = NL80211_CMD_UPDATE_FT_IES,
11546 .doit = nl80211_update_ft_ies,
11547 .policy = nl80211_policy,
11548 .flags = GENL_ADMIN_PERM,
11549 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11550 NL80211_FLAG_NEED_RTNL,
11551 },
11552 {
11553 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11554 .doit = nl80211_crit_protocol_start,
11555 .policy = nl80211_policy,
11556 .flags = GENL_ADMIN_PERM,
11557 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11558 NL80211_FLAG_NEED_RTNL,
11559 },
11560 {
11561 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11562 .doit = nl80211_crit_protocol_stop,
11563 .policy = nl80211_policy,
11564 .flags = GENL_ADMIN_PERM,
11565 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11566 NL80211_FLAG_NEED_RTNL,
11567 },
11568 {
11569 .cmd = NL80211_CMD_GET_COALESCE,
11570 .doit = nl80211_get_coalesce,
11571 .policy = nl80211_policy,
11572 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11573 NL80211_FLAG_NEED_RTNL,
11574 },
11575 {
11576 .cmd = NL80211_CMD_SET_COALESCE,
11577 .doit = nl80211_set_coalesce,
11578 .policy = nl80211_policy,
11579 .flags = GENL_ADMIN_PERM,
11580 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11581 NL80211_FLAG_NEED_RTNL,
11582 },
11583 {
11584 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11585 .doit = nl80211_channel_switch,
11586 .policy = nl80211_policy,
11587 .flags = GENL_ADMIN_PERM,
11588 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11589 NL80211_FLAG_NEED_RTNL,
11590 },
11591 {
11592 .cmd = NL80211_CMD_VENDOR,
11593 .doit = nl80211_vendor_cmd,
11594 .dumpit = nl80211_vendor_cmd_dump,
11595 .policy = nl80211_policy,
11596 .flags = GENL_ADMIN_PERM,
11597 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11598 NL80211_FLAG_NEED_RTNL,
11599 },
11600 {
11601 .cmd = NL80211_CMD_SET_QOS_MAP,
11602 .doit = nl80211_set_qos_map,
11603 .policy = nl80211_policy,
11604 .flags = GENL_ADMIN_PERM,
11605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11606 NL80211_FLAG_NEED_RTNL,
11607 },
11608 {
11609 .cmd = NL80211_CMD_ADD_TX_TS,
11610 .doit = nl80211_add_tx_ts,
11611 .policy = nl80211_policy,
11612 .flags = GENL_ADMIN_PERM,
11613 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11614 NL80211_FLAG_NEED_RTNL,
11615 },
11616 {
11617 .cmd = NL80211_CMD_DEL_TX_TS,
11618 .doit = nl80211_del_tx_ts,
11619 .policy = nl80211_policy,
11620 .flags = GENL_ADMIN_PERM,
11621 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11622 NL80211_FLAG_NEED_RTNL,
11623 },
11624 {
11625 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11626 .doit = nl80211_tdls_channel_switch,
11627 .policy = nl80211_policy,
11628 .flags = GENL_ADMIN_PERM,
11629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11630 NL80211_FLAG_NEED_RTNL,
11631 },
11632 {
11633 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11634 .doit = nl80211_tdls_cancel_channel_switch,
11635 .policy = nl80211_policy,
11636 .flags = GENL_ADMIN_PERM,
11637 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11638 NL80211_FLAG_NEED_RTNL,
11639 },
11640 };
11641
11642 /* notification functions */
11643
11644 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11645 enum nl80211_commands cmd)
11646 {
11647 struct sk_buff *msg;
11648 struct nl80211_dump_wiphy_state state = {};
11649
11650 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11651 cmd != NL80211_CMD_DEL_WIPHY);
11652
11653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11654 if (!msg)
11655 return;
11656
11657 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11658 nlmsg_free(msg);
11659 return;
11660 }
11661
11662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11663 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11664 }
11665
11666 static int nl80211_add_scan_req(struct sk_buff *msg,
11667 struct cfg80211_registered_device *rdev)
11668 {
11669 struct cfg80211_scan_request *req = rdev->scan_req;
11670 struct nlattr *nest;
11671 int i;
11672
11673 if (WARN_ON(!req))
11674 return 0;
11675
11676 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11677 if (!nest)
11678 goto nla_put_failure;
11679 for (i = 0; i < req->n_ssids; i++) {
11680 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11681 goto nla_put_failure;
11682 }
11683 nla_nest_end(msg, nest);
11684
11685 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11686 if (!nest)
11687 goto nla_put_failure;
11688 for (i = 0; i < req->n_channels; i++) {
11689 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11690 goto nla_put_failure;
11691 }
11692 nla_nest_end(msg, nest);
11693
11694 if (req->ie &&
11695 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11696 goto nla_put_failure;
11697
11698 if (req->flags &&
11699 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11700 goto nla_put_failure;
11701
11702 return 0;
11703 nla_put_failure:
11704 return -ENOBUFS;
11705 }
11706
11707 static int nl80211_send_scan_msg(struct sk_buff *msg,
11708 struct cfg80211_registered_device *rdev,
11709 struct wireless_dev *wdev,
11710 u32 portid, u32 seq, int flags,
11711 u32 cmd)
11712 {
11713 void *hdr;
11714
11715 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11716 if (!hdr)
11717 return -1;
11718
11719 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11720 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11721 wdev->netdev->ifindex)) ||
11722 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11723 NL80211_ATTR_PAD))
11724 goto nla_put_failure;
11725
11726 /* ignore errors and send incomplete event anyway */
11727 nl80211_add_scan_req(msg, rdev);
11728
11729 genlmsg_end(msg, hdr);
11730 return 0;
11731
11732 nla_put_failure:
11733 genlmsg_cancel(msg, hdr);
11734 return -EMSGSIZE;
11735 }
11736
11737 static int
11738 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11739 struct cfg80211_registered_device *rdev,
11740 struct net_device *netdev,
11741 u32 portid, u32 seq, int flags, u32 cmd)
11742 {
11743 void *hdr;
11744
11745 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11746 if (!hdr)
11747 return -1;
11748
11749 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11750 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11751 goto nla_put_failure;
11752
11753 genlmsg_end(msg, hdr);
11754 return 0;
11755
11756 nla_put_failure:
11757 genlmsg_cancel(msg, hdr);
11758 return -EMSGSIZE;
11759 }
11760
11761 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11762 struct wireless_dev *wdev)
11763 {
11764 struct sk_buff *msg;
11765
11766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11767 if (!msg)
11768 return;
11769
11770 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11771 NL80211_CMD_TRIGGER_SCAN) < 0) {
11772 nlmsg_free(msg);
11773 return;
11774 }
11775
11776 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11777 NL80211_MCGRP_SCAN, GFP_KERNEL);
11778 }
11779
11780 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11781 struct wireless_dev *wdev, bool aborted)
11782 {
11783 struct sk_buff *msg;
11784
11785 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11786 if (!msg)
11787 return NULL;
11788
11789 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11790 aborted ? NL80211_CMD_SCAN_ABORTED :
11791 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11792 nlmsg_free(msg);
11793 return NULL;
11794 }
11795
11796 return msg;
11797 }
11798
11799 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11800 struct sk_buff *msg)
11801 {
11802 if (!msg)
11803 return;
11804
11805 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11806 NL80211_MCGRP_SCAN, GFP_KERNEL);
11807 }
11808
11809 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11810 struct net_device *netdev)
11811 {
11812 struct sk_buff *msg;
11813
11814 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11815 if (!msg)
11816 return;
11817
11818 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11819 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11820 nlmsg_free(msg);
11821 return;
11822 }
11823
11824 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11825 NL80211_MCGRP_SCAN, GFP_KERNEL);
11826 }
11827
11828 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11829 struct net_device *netdev, u32 cmd)
11830 {
11831 struct sk_buff *msg;
11832
11833 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11834 if (!msg)
11835 return;
11836
11837 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11838 nlmsg_free(msg);
11839 return;
11840 }
11841
11842 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11843 NL80211_MCGRP_SCAN, GFP_KERNEL);
11844 }
11845
11846 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11847 struct regulatory_request *request)
11848 {
11849 /* Userspace can always count this one always being set */
11850 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11851 goto nla_put_failure;
11852
11853 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11854 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11855 NL80211_REGDOM_TYPE_WORLD))
11856 goto nla_put_failure;
11857 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11858 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11859 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11860 goto nla_put_failure;
11861 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11862 request->intersect) {
11863 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11864 NL80211_REGDOM_TYPE_INTERSECTION))
11865 goto nla_put_failure;
11866 } else {
11867 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11868 NL80211_REGDOM_TYPE_COUNTRY) ||
11869 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11870 request->alpha2))
11871 goto nla_put_failure;
11872 }
11873
11874 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11875 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11876
11877 if (wiphy &&
11878 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11879 goto nla_put_failure;
11880
11881 if (wiphy &&
11882 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11883 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11884 goto nla_put_failure;
11885 }
11886
11887 return true;
11888
11889 nla_put_failure:
11890 return false;
11891 }
11892
11893 /*
11894 * This can happen on global regulatory changes or device specific settings
11895 * based on custom regulatory domains.
11896 */
11897 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11898 struct regulatory_request *request)
11899 {
11900 struct sk_buff *msg;
11901 void *hdr;
11902
11903 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11904 if (!msg)
11905 return;
11906
11907 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11908 if (!hdr) {
11909 nlmsg_free(msg);
11910 return;
11911 }
11912
11913 if (nl80211_reg_change_event_fill(msg, request) == false)
11914 goto nla_put_failure;
11915
11916 genlmsg_end(msg, hdr);
11917
11918 rcu_read_lock();
11919 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11920 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11921 rcu_read_unlock();
11922
11923 return;
11924
11925 nla_put_failure:
11926 genlmsg_cancel(msg, hdr);
11927 nlmsg_free(msg);
11928 }
11929
11930 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11931 struct net_device *netdev,
11932 const u8 *buf, size_t len,
11933 enum nl80211_commands cmd, gfp_t gfp,
11934 int uapsd_queues)
11935 {
11936 struct sk_buff *msg;
11937 void *hdr;
11938
11939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11940 if (!msg)
11941 return;
11942
11943 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11944 if (!hdr) {
11945 nlmsg_free(msg);
11946 return;
11947 }
11948
11949 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11950 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11951 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11952 goto nla_put_failure;
11953
11954 if (uapsd_queues >= 0) {
11955 struct nlattr *nla_wmm =
11956 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11957 if (!nla_wmm)
11958 goto nla_put_failure;
11959
11960 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11961 uapsd_queues))
11962 goto nla_put_failure;
11963
11964 nla_nest_end(msg, nla_wmm);
11965 }
11966
11967 genlmsg_end(msg, hdr);
11968
11969 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11970 NL80211_MCGRP_MLME, gfp);
11971 return;
11972
11973 nla_put_failure:
11974 genlmsg_cancel(msg, hdr);
11975 nlmsg_free(msg);
11976 }
11977
11978 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11979 struct net_device *netdev, const u8 *buf,
11980 size_t len, gfp_t gfp)
11981 {
11982 nl80211_send_mlme_event(rdev, netdev, buf, len,
11983 NL80211_CMD_AUTHENTICATE, gfp, -1);
11984 }
11985
11986 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11987 struct net_device *netdev, const u8 *buf,
11988 size_t len, gfp_t gfp, int uapsd_queues)
11989 {
11990 nl80211_send_mlme_event(rdev, netdev, buf, len,
11991 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11992 }
11993
11994 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11995 struct net_device *netdev, const u8 *buf,
11996 size_t len, gfp_t gfp)
11997 {
11998 nl80211_send_mlme_event(rdev, netdev, buf, len,
11999 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
12000 }
12001
12002 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
12003 struct net_device *netdev, const u8 *buf,
12004 size_t len, gfp_t gfp)
12005 {
12006 nl80211_send_mlme_event(rdev, netdev, buf, len,
12007 NL80211_CMD_DISASSOCIATE, gfp, -1);
12008 }
12009
12010 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
12011 size_t len)
12012 {
12013 struct wireless_dev *wdev = dev->ieee80211_ptr;
12014 struct wiphy *wiphy = wdev->wiphy;
12015 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12016 const struct ieee80211_mgmt *mgmt = (void *)buf;
12017 u32 cmd;
12018
12019 if (WARN_ON(len < 2))
12020 return;
12021
12022 if (ieee80211_is_deauth(mgmt->frame_control))
12023 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
12024 else
12025 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
12026
12027 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
12028 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
12029 }
12030 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
12031
12032 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
12033 struct net_device *netdev, int cmd,
12034 const u8 *addr, gfp_t gfp)
12035 {
12036 struct sk_buff *msg;
12037 void *hdr;
12038
12039 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12040 if (!msg)
12041 return;
12042
12043 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12044 if (!hdr) {
12045 nlmsg_free(msg);
12046 return;
12047 }
12048
12049 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12050 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12051 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
12052 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12053 goto nla_put_failure;
12054
12055 genlmsg_end(msg, hdr);
12056
12057 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12058 NL80211_MCGRP_MLME, gfp);
12059 return;
12060
12061 nla_put_failure:
12062 genlmsg_cancel(msg, hdr);
12063 nlmsg_free(msg);
12064 }
12065
12066 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
12067 struct net_device *netdev, const u8 *addr,
12068 gfp_t gfp)
12069 {
12070 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
12071 addr, gfp);
12072 }
12073
12074 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
12075 struct net_device *netdev, const u8 *addr,
12076 gfp_t gfp)
12077 {
12078 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
12079 addr, gfp);
12080 }
12081
12082 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
12083 struct net_device *netdev, const u8 *bssid,
12084 const u8 *req_ie, size_t req_ie_len,
12085 const u8 *resp_ie, size_t resp_ie_len,
12086 u16 status, gfp_t gfp)
12087 {
12088 struct sk_buff *msg;
12089 void *hdr;
12090
12091 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12092 if (!msg)
12093 return;
12094
12095 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
12096 if (!hdr) {
12097 nlmsg_free(msg);
12098 return;
12099 }
12100
12101 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12102 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12103 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
12104 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
12105 (req_ie &&
12106 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12107 (resp_ie &&
12108 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12109 goto nla_put_failure;
12110
12111 genlmsg_end(msg, hdr);
12112
12113 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12114 NL80211_MCGRP_MLME, gfp);
12115 return;
12116
12117 nla_put_failure:
12118 genlmsg_cancel(msg, hdr);
12119 nlmsg_free(msg);
12120
12121 }
12122
12123 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
12124 struct net_device *netdev, const u8 *bssid,
12125 const u8 *req_ie, size_t req_ie_len,
12126 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
12127 {
12128 struct sk_buff *msg;
12129 void *hdr;
12130
12131 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12132 if (!msg)
12133 return;
12134
12135 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
12136 if (!hdr) {
12137 nlmsg_free(msg);
12138 return;
12139 }
12140
12141 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12142 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12143 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
12144 (req_ie &&
12145 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12146 (resp_ie &&
12147 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12148 goto nla_put_failure;
12149
12150 genlmsg_end(msg, hdr);
12151
12152 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12153 NL80211_MCGRP_MLME, gfp);
12154 return;
12155
12156 nla_put_failure:
12157 genlmsg_cancel(msg, hdr);
12158 nlmsg_free(msg);
12159
12160 }
12161
12162 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12163 struct net_device *netdev, u16 reason,
12164 const u8 *ie, size_t ie_len, bool from_ap)
12165 {
12166 struct sk_buff *msg;
12167 void *hdr;
12168
12169 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12170 if (!msg)
12171 return;
12172
12173 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12174 if (!hdr) {
12175 nlmsg_free(msg);
12176 return;
12177 }
12178
12179 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12180 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12181 (from_ap && reason &&
12182 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12183 (from_ap &&
12184 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12185 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12186 goto nla_put_failure;
12187
12188 genlmsg_end(msg, hdr);
12189
12190 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12191 NL80211_MCGRP_MLME, GFP_KERNEL);
12192 return;
12193
12194 nla_put_failure:
12195 genlmsg_cancel(msg, hdr);
12196 nlmsg_free(msg);
12197
12198 }
12199
12200 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12201 struct net_device *netdev, const u8 *bssid,
12202 gfp_t gfp)
12203 {
12204 struct sk_buff *msg;
12205 void *hdr;
12206
12207 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12208 if (!msg)
12209 return;
12210
12211 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12212 if (!hdr) {
12213 nlmsg_free(msg);
12214 return;
12215 }
12216
12217 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12218 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12219 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12220 goto nla_put_failure;
12221
12222 genlmsg_end(msg, hdr);
12223
12224 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12225 NL80211_MCGRP_MLME, gfp);
12226 return;
12227
12228 nla_put_failure:
12229 genlmsg_cancel(msg, hdr);
12230 nlmsg_free(msg);
12231 }
12232
12233 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12234 const u8* ie, u8 ie_len, gfp_t gfp)
12235 {
12236 struct wireless_dev *wdev = dev->ieee80211_ptr;
12237 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12238 struct sk_buff *msg;
12239 void *hdr;
12240
12241 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12242 return;
12243
12244 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12245
12246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12247 if (!msg)
12248 return;
12249
12250 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12251 if (!hdr) {
12252 nlmsg_free(msg);
12253 return;
12254 }
12255
12256 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12257 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12258 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12259 (ie_len && ie &&
12260 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12261 goto nla_put_failure;
12262
12263 genlmsg_end(msg, hdr);
12264
12265 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12266 NL80211_MCGRP_MLME, gfp);
12267 return;
12268
12269 nla_put_failure:
12270 genlmsg_cancel(msg, hdr);
12271 nlmsg_free(msg);
12272 }
12273 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12274
12275 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12276 struct net_device *netdev, const u8 *addr,
12277 enum nl80211_key_type key_type, int key_id,
12278 const u8 *tsc, gfp_t gfp)
12279 {
12280 struct sk_buff *msg;
12281 void *hdr;
12282
12283 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12284 if (!msg)
12285 return;
12286
12287 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12288 if (!hdr) {
12289 nlmsg_free(msg);
12290 return;
12291 }
12292
12293 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12294 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12295 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12296 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12297 (key_id != -1 &&
12298 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12299 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12300 goto nla_put_failure;
12301
12302 genlmsg_end(msg, hdr);
12303
12304 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12305 NL80211_MCGRP_MLME, gfp);
12306 return;
12307
12308 nla_put_failure:
12309 genlmsg_cancel(msg, hdr);
12310 nlmsg_free(msg);
12311 }
12312
12313 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12314 struct ieee80211_channel *channel_before,
12315 struct ieee80211_channel *channel_after)
12316 {
12317 struct sk_buff *msg;
12318 void *hdr;
12319 struct nlattr *nl_freq;
12320
12321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12322 if (!msg)
12323 return;
12324
12325 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12326 if (!hdr) {
12327 nlmsg_free(msg);
12328 return;
12329 }
12330
12331 /*
12332 * Since we are applying the beacon hint to a wiphy we know its
12333 * wiphy_idx is valid
12334 */
12335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12336 goto nla_put_failure;
12337
12338 /* Before */
12339 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12340 if (!nl_freq)
12341 goto nla_put_failure;
12342 if (nl80211_msg_put_channel(msg, channel_before, false))
12343 goto nla_put_failure;
12344 nla_nest_end(msg, nl_freq);
12345
12346 /* After */
12347 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12348 if (!nl_freq)
12349 goto nla_put_failure;
12350 if (nl80211_msg_put_channel(msg, channel_after, false))
12351 goto nla_put_failure;
12352 nla_nest_end(msg, nl_freq);
12353
12354 genlmsg_end(msg, hdr);
12355
12356 rcu_read_lock();
12357 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12358 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12359 rcu_read_unlock();
12360
12361 return;
12362
12363 nla_put_failure:
12364 genlmsg_cancel(msg, hdr);
12365 nlmsg_free(msg);
12366 }
12367
12368 static void nl80211_send_remain_on_chan_event(
12369 int cmd, struct cfg80211_registered_device *rdev,
12370 struct wireless_dev *wdev, u64 cookie,
12371 struct ieee80211_channel *chan,
12372 unsigned int duration, gfp_t gfp)
12373 {
12374 struct sk_buff *msg;
12375 void *hdr;
12376
12377 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12378 if (!msg)
12379 return;
12380
12381 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12382 if (!hdr) {
12383 nlmsg_free(msg);
12384 return;
12385 }
12386
12387 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12388 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12389 wdev->netdev->ifindex)) ||
12390 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12391 NL80211_ATTR_PAD) ||
12392 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12393 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12394 NL80211_CHAN_NO_HT) ||
12395 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12396 NL80211_ATTR_PAD))
12397 goto nla_put_failure;
12398
12399 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12400 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12401 goto nla_put_failure;
12402
12403 genlmsg_end(msg, hdr);
12404
12405 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12406 NL80211_MCGRP_MLME, gfp);
12407 return;
12408
12409 nla_put_failure:
12410 genlmsg_cancel(msg, hdr);
12411 nlmsg_free(msg);
12412 }
12413
12414 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12415 struct ieee80211_channel *chan,
12416 unsigned int duration, gfp_t gfp)
12417 {
12418 struct wiphy *wiphy = wdev->wiphy;
12419 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12420
12421 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12422 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12423 rdev, wdev, cookie, chan,
12424 duration, gfp);
12425 }
12426 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12427
12428 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12429 struct ieee80211_channel *chan,
12430 gfp_t gfp)
12431 {
12432 struct wiphy *wiphy = wdev->wiphy;
12433 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12434
12435 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12436 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12437 rdev, wdev, cookie, chan, 0, gfp);
12438 }
12439 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12440
12441 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12442 struct station_info *sinfo, gfp_t gfp)
12443 {
12444 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12445 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12446 struct sk_buff *msg;
12447
12448 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12449
12450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12451 if (!msg)
12452 return;
12453
12454 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12455 rdev, dev, mac_addr, sinfo) < 0) {
12456 nlmsg_free(msg);
12457 return;
12458 }
12459
12460 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12461 NL80211_MCGRP_MLME, gfp);
12462 }
12463 EXPORT_SYMBOL(cfg80211_new_sta);
12464
12465 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12466 struct station_info *sinfo, gfp_t gfp)
12467 {
12468 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12469 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12470 struct sk_buff *msg;
12471 struct station_info empty_sinfo = {};
12472
12473 if (!sinfo)
12474 sinfo = &empty_sinfo;
12475
12476 trace_cfg80211_del_sta(dev, mac_addr);
12477
12478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12479 if (!msg)
12480 return;
12481
12482 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12483 rdev, dev, mac_addr, sinfo) < 0) {
12484 nlmsg_free(msg);
12485 return;
12486 }
12487
12488 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12489 NL80211_MCGRP_MLME, gfp);
12490 }
12491 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12492
12493 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12494 enum nl80211_connect_failed_reason reason,
12495 gfp_t gfp)
12496 {
12497 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12498 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12499 struct sk_buff *msg;
12500 void *hdr;
12501
12502 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12503 if (!msg)
12504 return;
12505
12506 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12507 if (!hdr) {
12508 nlmsg_free(msg);
12509 return;
12510 }
12511
12512 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12513 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12514 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12515 goto nla_put_failure;
12516
12517 genlmsg_end(msg, hdr);
12518
12519 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12520 NL80211_MCGRP_MLME, gfp);
12521 return;
12522
12523 nla_put_failure:
12524 genlmsg_cancel(msg, hdr);
12525 nlmsg_free(msg);
12526 }
12527 EXPORT_SYMBOL(cfg80211_conn_failed);
12528
12529 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12530 const u8 *addr, gfp_t gfp)
12531 {
12532 struct wireless_dev *wdev = dev->ieee80211_ptr;
12533 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12534 struct sk_buff *msg;
12535 void *hdr;
12536 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12537
12538 if (!nlportid)
12539 return false;
12540
12541 msg = nlmsg_new(100, gfp);
12542 if (!msg)
12543 return true;
12544
12545 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12546 if (!hdr) {
12547 nlmsg_free(msg);
12548 return true;
12549 }
12550
12551 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12552 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12553 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12554 goto nla_put_failure;
12555
12556 genlmsg_end(msg, hdr);
12557 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12558 return true;
12559
12560 nla_put_failure:
12561 genlmsg_cancel(msg, hdr);
12562 nlmsg_free(msg);
12563 return true;
12564 }
12565
12566 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12567 const u8 *addr, gfp_t gfp)
12568 {
12569 struct wireless_dev *wdev = dev->ieee80211_ptr;
12570 bool ret;
12571
12572 trace_cfg80211_rx_spurious_frame(dev, addr);
12573
12574 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12575 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12576 trace_cfg80211_return_bool(false);
12577 return false;
12578 }
12579 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12580 addr, gfp);
12581 trace_cfg80211_return_bool(ret);
12582 return ret;
12583 }
12584 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12585
12586 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12587 const u8 *addr, gfp_t gfp)
12588 {
12589 struct wireless_dev *wdev = dev->ieee80211_ptr;
12590 bool ret;
12591
12592 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12593
12594 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12595 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12596 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12597 trace_cfg80211_return_bool(false);
12598 return false;
12599 }
12600 ret = __nl80211_unexpected_frame(dev,
12601 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12602 addr, gfp);
12603 trace_cfg80211_return_bool(ret);
12604 return ret;
12605 }
12606 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12607
12608 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12609 struct wireless_dev *wdev, u32 nlportid,
12610 int freq, int sig_dbm,
12611 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12612 {
12613 struct net_device *netdev = wdev->netdev;
12614 struct sk_buff *msg;
12615 void *hdr;
12616
12617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12618 if (!msg)
12619 return -ENOMEM;
12620
12621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12622 if (!hdr) {
12623 nlmsg_free(msg);
12624 return -ENOMEM;
12625 }
12626
12627 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12628 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12629 netdev->ifindex)) ||
12630 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12631 NL80211_ATTR_PAD) ||
12632 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12633 (sig_dbm &&
12634 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12635 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12636 (flags &&
12637 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12638 goto nla_put_failure;
12639
12640 genlmsg_end(msg, hdr);
12641
12642 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12643
12644 nla_put_failure:
12645 genlmsg_cancel(msg, hdr);
12646 nlmsg_free(msg);
12647 return -ENOBUFS;
12648 }
12649
12650 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12651 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12652 {
12653 struct wiphy *wiphy = wdev->wiphy;
12654 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12655 struct net_device *netdev = wdev->netdev;
12656 struct sk_buff *msg;
12657 void *hdr;
12658
12659 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12660
12661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12662 if (!msg)
12663 return;
12664
12665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12666 if (!hdr) {
12667 nlmsg_free(msg);
12668 return;
12669 }
12670
12671 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12672 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12673 netdev->ifindex)) ||
12674 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12675 NL80211_ATTR_PAD) ||
12676 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12677 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12678 NL80211_ATTR_PAD) ||
12679 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12680 goto nla_put_failure;
12681
12682 genlmsg_end(msg, hdr);
12683
12684 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12685 NL80211_MCGRP_MLME, gfp);
12686 return;
12687
12688 nla_put_failure:
12689 genlmsg_cancel(msg, hdr);
12690 nlmsg_free(msg);
12691 }
12692 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12693
12694 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12695 const char *mac, gfp_t gfp)
12696 {
12697 struct wireless_dev *wdev = dev->ieee80211_ptr;
12698 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12699 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12700 void **cb;
12701
12702 if (!msg)
12703 return NULL;
12704
12705 cb = (void **)msg->cb;
12706
12707 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12708 if (!cb[0]) {
12709 nlmsg_free(msg);
12710 return NULL;
12711 }
12712
12713 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12714 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12715 goto nla_put_failure;
12716
12717 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12718 goto nla_put_failure;
12719
12720 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12721 if (!cb[1])
12722 goto nla_put_failure;
12723
12724 cb[2] = rdev;
12725
12726 return msg;
12727 nla_put_failure:
12728 nlmsg_free(msg);
12729 return NULL;
12730 }
12731
12732 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12733 {
12734 void **cb = (void **)msg->cb;
12735 struct cfg80211_registered_device *rdev = cb[2];
12736
12737 nla_nest_end(msg, cb[1]);
12738 genlmsg_end(msg, cb[0]);
12739
12740 memset(msg->cb, 0, sizeof(msg->cb));
12741
12742 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12743 NL80211_MCGRP_MLME, gfp);
12744 }
12745
12746 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12747 enum nl80211_cqm_rssi_threshold_event rssi_event,
12748 gfp_t gfp)
12749 {
12750 struct sk_buff *msg;
12751
12752 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12753
12754 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12755 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12756 return;
12757
12758 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12759 if (!msg)
12760 return;
12761
12762 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12763 rssi_event))
12764 goto nla_put_failure;
12765
12766 cfg80211_send_cqm(msg, gfp);
12767
12768 return;
12769
12770 nla_put_failure:
12771 nlmsg_free(msg);
12772 }
12773 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12774
12775 void cfg80211_cqm_txe_notify(struct net_device *dev,
12776 const u8 *peer, u32 num_packets,
12777 u32 rate, u32 intvl, gfp_t gfp)
12778 {
12779 struct sk_buff *msg;
12780
12781 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12782 if (!msg)
12783 return;
12784
12785 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12786 goto nla_put_failure;
12787
12788 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12789 goto nla_put_failure;
12790
12791 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12792 goto nla_put_failure;
12793
12794 cfg80211_send_cqm(msg, gfp);
12795 return;
12796
12797 nla_put_failure:
12798 nlmsg_free(msg);
12799 }
12800 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12801
12802 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12803 const u8 *peer, u32 num_packets, gfp_t gfp)
12804 {
12805 struct sk_buff *msg;
12806
12807 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12808
12809 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12810 if (!msg)
12811 return;
12812
12813 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12814 goto nla_put_failure;
12815
12816 cfg80211_send_cqm(msg, gfp);
12817 return;
12818
12819 nla_put_failure:
12820 nlmsg_free(msg);
12821 }
12822 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12823
12824 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12825 {
12826 struct sk_buff *msg;
12827
12828 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12829 if (!msg)
12830 return;
12831
12832 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12833 goto nla_put_failure;
12834
12835 cfg80211_send_cqm(msg, gfp);
12836 return;
12837
12838 nla_put_failure:
12839 nlmsg_free(msg);
12840 }
12841 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12842
12843 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12844 struct net_device *netdev, const u8 *bssid,
12845 const u8 *replay_ctr, gfp_t gfp)
12846 {
12847 struct sk_buff *msg;
12848 struct nlattr *rekey_attr;
12849 void *hdr;
12850
12851 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12852 if (!msg)
12853 return;
12854
12855 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12856 if (!hdr) {
12857 nlmsg_free(msg);
12858 return;
12859 }
12860
12861 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12862 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12863 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12864 goto nla_put_failure;
12865
12866 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12867 if (!rekey_attr)
12868 goto nla_put_failure;
12869
12870 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12871 NL80211_REPLAY_CTR_LEN, replay_ctr))
12872 goto nla_put_failure;
12873
12874 nla_nest_end(msg, rekey_attr);
12875
12876 genlmsg_end(msg, hdr);
12877
12878 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12879 NL80211_MCGRP_MLME, gfp);
12880 return;
12881
12882 nla_put_failure:
12883 genlmsg_cancel(msg, hdr);
12884 nlmsg_free(msg);
12885 }
12886
12887 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12888 const u8 *replay_ctr, gfp_t gfp)
12889 {
12890 struct wireless_dev *wdev = dev->ieee80211_ptr;
12891 struct wiphy *wiphy = wdev->wiphy;
12892 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12893
12894 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12895 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12896 }
12897 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12898
12899 static void
12900 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12901 struct net_device *netdev, int index,
12902 const u8 *bssid, bool preauth, gfp_t gfp)
12903 {
12904 struct sk_buff *msg;
12905 struct nlattr *attr;
12906 void *hdr;
12907
12908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12909 if (!msg)
12910 return;
12911
12912 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12913 if (!hdr) {
12914 nlmsg_free(msg);
12915 return;
12916 }
12917
12918 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12919 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12920 goto nla_put_failure;
12921
12922 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12923 if (!attr)
12924 goto nla_put_failure;
12925
12926 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12927 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12928 (preauth &&
12929 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12930 goto nla_put_failure;
12931
12932 nla_nest_end(msg, attr);
12933
12934 genlmsg_end(msg, hdr);
12935
12936 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12937 NL80211_MCGRP_MLME, gfp);
12938 return;
12939
12940 nla_put_failure:
12941 genlmsg_cancel(msg, hdr);
12942 nlmsg_free(msg);
12943 }
12944
12945 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12946 const u8 *bssid, bool preauth, gfp_t gfp)
12947 {
12948 struct wireless_dev *wdev = dev->ieee80211_ptr;
12949 struct wiphy *wiphy = wdev->wiphy;
12950 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12951
12952 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12953 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12954 }
12955 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12956
12957 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12958 struct net_device *netdev,
12959 struct cfg80211_chan_def *chandef,
12960 gfp_t gfp,
12961 enum nl80211_commands notif,
12962 u8 count)
12963 {
12964 struct sk_buff *msg;
12965 void *hdr;
12966
12967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12968 if (!msg)
12969 return;
12970
12971 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12972 if (!hdr) {
12973 nlmsg_free(msg);
12974 return;
12975 }
12976
12977 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12978 goto nla_put_failure;
12979
12980 if (nl80211_send_chandef(msg, chandef))
12981 goto nla_put_failure;
12982
12983 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12984 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12985 goto nla_put_failure;
12986
12987 genlmsg_end(msg, hdr);
12988
12989 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12990 NL80211_MCGRP_MLME, gfp);
12991 return;
12992
12993 nla_put_failure:
12994 genlmsg_cancel(msg, hdr);
12995 nlmsg_free(msg);
12996 }
12997
12998 void cfg80211_ch_switch_notify(struct net_device *dev,
12999 struct cfg80211_chan_def *chandef)
13000 {
13001 struct wireless_dev *wdev = dev->ieee80211_ptr;
13002 struct wiphy *wiphy = wdev->wiphy;
13003 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13004
13005 ASSERT_WDEV_LOCK(wdev);
13006
13007 trace_cfg80211_ch_switch_notify(dev, chandef);
13008
13009 wdev->chandef = *chandef;
13010 wdev->preset_chandef = *chandef;
13011 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13012 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
13013 }
13014 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
13015
13016 void cfg80211_ch_switch_started_notify(struct net_device *dev,
13017 struct cfg80211_chan_def *chandef,
13018 u8 count)
13019 {
13020 struct wireless_dev *wdev = dev->ieee80211_ptr;
13021 struct wiphy *wiphy = wdev->wiphy;
13022 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13023
13024 trace_cfg80211_ch_switch_started_notify(dev, chandef);
13025
13026 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13027 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
13028 }
13029 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
13030
13031 void
13032 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
13033 const struct cfg80211_chan_def *chandef,
13034 enum nl80211_radar_event event,
13035 struct net_device *netdev, gfp_t gfp)
13036 {
13037 struct sk_buff *msg;
13038 void *hdr;
13039
13040 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13041 if (!msg)
13042 return;
13043
13044 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
13045 if (!hdr) {
13046 nlmsg_free(msg);
13047 return;
13048 }
13049
13050 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
13051 goto nla_put_failure;
13052
13053 /* NOP and radar events don't need a netdev parameter */
13054 if (netdev) {
13055 struct wireless_dev *wdev = netdev->ieee80211_ptr;
13056
13057 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13058 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13059 NL80211_ATTR_PAD))
13060 goto nla_put_failure;
13061 }
13062
13063 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
13064 goto nla_put_failure;
13065
13066 if (nl80211_send_chandef(msg, chandef))
13067 goto nla_put_failure;
13068
13069 genlmsg_end(msg, hdr);
13070
13071 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13072 NL80211_MCGRP_MLME, gfp);
13073 return;
13074
13075 nla_put_failure:
13076 genlmsg_cancel(msg, hdr);
13077 nlmsg_free(msg);
13078 }
13079
13080 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
13081 u64 cookie, bool acked, gfp_t gfp)
13082 {
13083 struct wireless_dev *wdev = dev->ieee80211_ptr;
13084 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13085 struct sk_buff *msg;
13086 void *hdr;
13087
13088 trace_cfg80211_probe_status(dev, addr, cookie, acked);
13089
13090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13091
13092 if (!msg)
13093 return;
13094
13095 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
13096 if (!hdr) {
13097 nlmsg_free(msg);
13098 return;
13099 }
13100
13101 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13102 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13103 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13104 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13105 NL80211_ATTR_PAD) ||
13106 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
13107 goto nla_put_failure;
13108
13109 genlmsg_end(msg, hdr);
13110
13111 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13112 NL80211_MCGRP_MLME, gfp);
13113 return;
13114
13115 nla_put_failure:
13116 genlmsg_cancel(msg, hdr);
13117 nlmsg_free(msg);
13118 }
13119 EXPORT_SYMBOL(cfg80211_probe_status);
13120
13121 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
13122 const u8 *frame, size_t len,
13123 int freq, int sig_dbm)
13124 {
13125 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13126 struct sk_buff *msg;
13127 void *hdr;
13128 struct cfg80211_beacon_registration *reg;
13129
13130 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
13131
13132 spin_lock_bh(&rdev->beacon_registrations_lock);
13133 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13134 msg = nlmsg_new(len + 100, GFP_ATOMIC);
13135 if (!msg) {
13136 spin_unlock_bh(&rdev->beacon_registrations_lock);
13137 return;
13138 }
13139
13140 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13141 if (!hdr)
13142 goto nla_put_failure;
13143
13144 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13145 (freq &&
13146 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
13147 (sig_dbm &&
13148 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13149 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
13150 goto nla_put_failure;
13151
13152 genlmsg_end(msg, hdr);
13153
13154 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
13155 }
13156 spin_unlock_bh(&rdev->beacon_registrations_lock);
13157 return;
13158
13159 nla_put_failure:
13160 spin_unlock_bh(&rdev->beacon_registrations_lock);
13161 if (hdr)
13162 genlmsg_cancel(msg, hdr);
13163 nlmsg_free(msg);
13164 }
13165 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13166
13167 #ifdef CONFIG_PM
13168 static int cfg80211_net_detect_results(struct sk_buff *msg,
13169 struct cfg80211_wowlan_wakeup *wakeup)
13170 {
13171 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13172 struct nlattr *nl_results, *nl_match, *nl_freqs;
13173 int i, j;
13174
13175 nl_results = nla_nest_start(
13176 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13177 if (!nl_results)
13178 return -EMSGSIZE;
13179
13180 for (i = 0; i < nd->n_matches; i++) {
13181 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13182
13183 nl_match = nla_nest_start(msg, i);
13184 if (!nl_match)
13185 break;
13186
13187 /* The SSID attribute is optional in nl80211, but for
13188 * simplicity reasons it's always present in the
13189 * cfg80211 structure. If a driver can't pass the
13190 * SSID, that needs to be changed. A zero length SSID
13191 * is still a valid SSID (wildcard), so it cannot be
13192 * used for this purpose.
13193 */
13194 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13195 match->ssid.ssid)) {
13196 nla_nest_cancel(msg, nl_match);
13197 goto out;
13198 }
13199
13200 if (match->n_channels) {
13201 nl_freqs = nla_nest_start(
13202 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13203 if (!nl_freqs) {
13204 nla_nest_cancel(msg, nl_match);
13205 goto out;
13206 }
13207
13208 for (j = 0; j < match->n_channels; j++) {
13209 if (nla_put_u32(msg, j, match->channels[j])) {
13210 nla_nest_cancel(msg, nl_freqs);
13211 nla_nest_cancel(msg, nl_match);
13212 goto out;
13213 }
13214 }
13215
13216 nla_nest_end(msg, nl_freqs);
13217 }
13218
13219 nla_nest_end(msg, nl_match);
13220 }
13221
13222 out:
13223 nla_nest_end(msg, nl_results);
13224 return 0;
13225 }
13226
13227 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13228 struct cfg80211_wowlan_wakeup *wakeup,
13229 gfp_t gfp)
13230 {
13231 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13232 struct sk_buff *msg;
13233 void *hdr;
13234 int size = 200;
13235
13236 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13237
13238 if (wakeup)
13239 size += wakeup->packet_present_len;
13240
13241 msg = nlmsg_new(size, gfp);
13242 if (!msg)
13243 return;
13244
13245 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13246 if (!hdr)
13247 goto free_msg;
13248
13249 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13250 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13251 NL80211_ATTR_PAD))
13252 goto free_msg;
13253
13254 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13255 wdev->netdev->ifindex))
13256 goto free_msg;
13257
13258 if (wakeup) {
13259 struct nlattr *reasons;
13260
13261 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13262 if (!reasons)
13263 goto free_msg;
13264
13265 if (wakeup->disconnect &&
13266 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13267 goto free_msg;
13268 if (wakeup->magic_pkt &&
13269 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13270 goto free_msg;
13271 if (wakeup->gtk_rekey_failure &&
13272 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13273 goto free_msg;
13274 if (wakeup->eap_identity_req &&
13275 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13276 goto free_msg;
13277 if (wakeup->four_way_handshake &&
13278 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13279 goto free_msg;
13280 if (wakeup->rfkill_release &&
13281 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13282 goto free_msg;
13283
13284 if (wakeup->pattern_idx >= 0 &&
13285 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13286 wakeup->pattern_idx))
13287 goto free_msg;
13288
13289 if (wakeup->tcp_match &&
13290 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13291 goto free_msg;
13292
13293 if (wakeup->tcp_connlost &&
13294 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13295 goto free_msg;
13296
13297 if (wakeup->tcp_nomoretokens &&
13298 nla_put_flag(msg,
13299 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13300 goto free_msg;
13301
13302 if (wakeup->packet) {
13303 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13304 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13305
13306 if (!wakeup->packet_80211) {
13307 pkt_attr =
13308 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13309 len_attr =
13310 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13311 }
13312
13313 if (wakeup->packet_len &&
13314 nla_put_u32(msg, len_attr, wakeup->packet_len))
13315 goto free_msg;
13316
13317 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13318 wakeup->packet))
13319 goto free_msg;
13320 }
13321
13322 if (wakeup->net_detect &&
13323 cfg80211_net_detect_results(msg, wakeup))
13324 goto free_msg;
13325
13326 nla_nest_end(msg, reasons);
13327 }
13328
13329 genlmsg_end(msg, hdr);
13330
13331 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13332 NL80211_MCGRP_MLME, gfp);
13333 return;
13334
13335 free_msg:
13336 nlmsg_free(msg);
13337 }
13338 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13339 #endif
13340
13341 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13342 enum nl80211_tdls_operation oper,
13343 u16 reason_code, gfp_t gfp)
13344 {
13345 struct wireless_dev *wdev = dev->ieee80211_ptr;
13346 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13347 struct sk_buff *msg;
13348 void *hdr;
13349
13350 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13351 reason_code);
13352
13353 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13354 if (!msg)
13355 return;
13356
13357 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13358 if (!hdr) {
13359 nlmsg_free(msg);
13360 return;
13361 }
13362
13363 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13364 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13365 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13366 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13367 (reason_code > 0 &&
13368 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13369 goto nla_put_failure;
13370
13371 genlmsg_end(msg, hdr);
13372
13373 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13374 NL80211_MCGRP_MLME, gfp);
13375 return;
13376
13377 nla_put_failure:
13378 genlmsg_cancel(msg, hdr);
13379 nlmsg_free(msg);
13380 }
13381 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13382
13383 static int nl80211_netlink_notify(struct notifier_block * nb,
13384 unsigned long state,
13385 void *_notify)
13386 {
13387 struct netlink_notify *notify = _notify;
13388 struct cfg80211_registered_device *rdev;
13389 struct wireless_dev *wdev;
13390 struct cfg80211_beacon_registration *reg, *tmp;
13391
13392 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
13393 return NOTIFY_DONE;
13394
13395 rcu_read_lock();
13396
13397 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13398 bool schedule_destroy_work = false;
13399 bool schedule_scan_stop = false;
13400 struct cfg80211_sched_scan_request *sched_scan_req =
13401 rcu_dereference(rdev->sched_scan_req);
13402
13403 if (sched_scan_req && notify->portid &&
13404 sched_scan_req->owner_nlportid == notify->portid)
13405 schedule_scan_stop = true;
13406
13407 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
13408 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13409
13410 if (wdev->owner_nlportid == notify->portid)
13411 schedule_destroy_work = true;
13412 }
13413
13414 spin_lock_bh(&rdev->beacon_registrations_lock);
13415 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13416 list) {
13417 if (reg->nlportid == notify->portid) {
13418 list_del(&reg->list);
13419 kfree(reg);
13420 break;
13421 }
13422 }
13423 spin_unlock_bh(&rdev->beacon_registrations_lock);
13424
13425 if (schedule_destroy_work) {
13426 struct cfg80211_iface_destroy *destroy;
13427
13428 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13429 if (destroy) {
13430 destroy->nlportid = notify->portid;
13431 spin_lock(&rdev->destroy_list_lock);
13432 list_add(&destroy->list, &rdev->destroy_list);
13433 spin_unlock(&rdev->destroy_list_lock);
13434 schedule_work(&rdev->destroy_work);
13435 }
13436 } else if (schedule_scan_stop) {
13437 sched_scan_req->owner_nlportid = 0;
13438
13439 if (rdev->ops->sched_scan_stop &&
13440 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13441 schedule_work(&rdev->sched_scan_stop_wk);
13442 }
13443 }
13444
13445 rcu_read_unlock();
13446
13447 /*
13448 * It is possible that the user space process that is controlling the
13449 * indoor setting disappeared, so notify the regulatory core.
13450 */
13451 regulatory_netlink_notify(notify->portid);
13452 return NOTIFY_OK;
13453 }
13454
13455 static struct notifier_block nl80211_netlink_notifier = {
13456 .notifier_call = nl80211_netlink_notify,
13457 };
13458
13459 void cfg80211_ft_event(struct net_device *netdev,
13460 struct cfg80211_ft_event_params *ft_event)
13461 {
13462 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13463 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13464 struct sk_buff *msg;
13465 void *hdr;
13466
13467 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13468
13469 if (!ft_event->target_ap)
13470 return;
13471
13472 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13473 if (!msg)
13474 return;
13475
13476 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13477 if (!hdr)
13478 goto out;
13479
13480 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13481 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13482 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13483 goto out;
13484
13485 if (ft_event->ies &&
13486 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13487 goto out;
13488 if (ft_event->ric_ies &&
13489 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13490 ft_event->ric_ies))
13491 goto out;
13492
13493 genlmsg_end(msg, hdr);
13494
13495 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13496 NL80211_MCGRP_MLME, GFP_KERNEL);
13497 return;
13498 out:
13499 nlmsg_free(msg);
13500 }
13501 EXPORT_SYMBOL(cfg80211_ft_event);
13502
13503 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13504 {
13505 struct cfg80211_registered_device *rdev;
13506 struct sk_buff *msg;
13507 void *hdr;
13508 u32 nlportid;
13509
13510 rdev = wiphy_to_rdev(wdev->wiphy);
13511 if (!rdev->crit_proto_nlportid)
13512 return;
13513
13514 nlportid = rdev->crit_proto_nlportid;
13515 rdev->crit_proto_nlportid = 0;
13516
13517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13518 if (!msg)
13519 return;
13520
13521 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13522 if (!hdr)
13523 goto nla_put_failure;
13524
13525 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13526 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13527 NL80211_ATTR_PAD))
13528 goto nla_put_failure;
13529
13530 genlmsg_end(msg, hdr);
13531
13532 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13533 return;
13534
13535 nla_put_failure:
13536 if (hdr)
13537 genlmsg_cancel(msg, hdr);
13538 nlmsg_free(msg);
13539
13540 }
13541 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13542
13543 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13544 {
13545 struct wiphy *wiphy = wdev->wiphy;
13546 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13547 struct sk_buff *msg;
13548 void *hdr;
13549
13550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13551 if (!msg)
13552 return;
13553
13554 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13555 if (!hdr)
13556 goto out;
13557
13558 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13559 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13560 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13561 NL80211_ATTR_PAD))
13562 goto out;
13563
13564 genlmsg_end(msg, hdr);
13565
13566 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13567 NL80211_MCGRP_MLME, GFP_KERNEL);
13568 return;
13569 out:
13570 nlmsg_free(msg);
13571 }
13572
13573 /* initialisation/exit functions */
13574
13575 int nl80211_init(void)
13576 {
13577 int err;
13578
13579 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13580 nl80211_mcgrps);
13581 if (err)
13582 return err;
13583
13584 err = netlink_register_notifier(&nl80211_netlink_notifier);
13585 if (err)
13586 goto err_out;
13587
13588 return 0;
13589 err_out:
13590 genl_unregister_family(&nl80211_fam);
13591 return err;
13592 }
13593
13594 void nl80211_exit(void)
13595 {
13596 netlink_unregister_notifier(&nl80211_netlink_notifier);
13597 genl_unregister_family(&nl80211_fam);
13598 }
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