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Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / net / wireless / nl80211.c
blob9c0dcc8324b0f6dbb2435ba68ed53b21b3f30d4d
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 2015-2017 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/nospec.h>
20 #include <linux/etherdevice.h>
21 #include <net/net_namespace.h>
22 #include <net/genetlink.h>
23 #include <net/cfg80211.h>
24 #include <net/sock.h>
25 #include <net/inet_connection_sock.h>
26 #include "core.h"
27 #include "nl80211.h"
28 #include "reg.h"
29 #include "rdev-ops.h"
30
31 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
32 struct genl_info *info,
33 struct cfg80211_crypto_settings *settings,
34 int cipher_limit);
35
36 /* the netlink family */
37 static struct genl_family nl80211_fam;
38
39 /* multicast groups */
40 enum nl80211_multicast_groups {
41 NL80211_MCGRP_CONFIG,
42 NL80211_MCGRP_SCAN,
43 NL80211_MCGRP_REGULATORY,
44 NL80211_MCGRP_MLME,
45 NL80211_MCGRP_VENDOR,
46 NL80211_MCGRP_NAN,
47 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
48 };
49
50 static const struct genl_multicast_group nl80211_mcgrps[] = {
51 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
52 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
53 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
54 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
55 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
56 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
57 #ifdef CONFIG_NL80211_TESTMODE
58 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
59 #endif
60 };
61
62 /* returns ERR_PTR values */
63 static struct wireless_dev *
64 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
65 {
66 struct cfg80211_registered_device *rdev;
67 struct wireless_dev *result = NULL;
68 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
69 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
70 u64 wdev_id;
71 int wiphy_idx = -1;
72 int ifidx = -1;
73
74 ASSERT_RTNL();
75
76 if (!have_ifidx && !have_wdev_id)
77 return ERR_PTR(-EINVAL);
78
79 if (have_ifidx)
80 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
81 if (have_wdev_id) {
82 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
83 wiphy_idx = wdev_id >> 32;
84 }
85
86 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
87 struct wireless_dev *wdev;
88
89 if (wiphy_net(&rdev->wiphy) != netns)
90 continue;
91
92 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
93 continue;
94
95 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
96 if (have_ifidx && wdev->netdev &&
97 wdev->netdev->ifindex == ifidx) {
98 result = wdev;
99 break;
100 }
101 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
102 result = wdev;
103 break;
104 }
105 }
106
107 if (result)
108 break;
109 }
110
111 if (result)
112 return result;
113 return ERR_PTR(-ENODEV);
114 }
115
116 static struct cfg80211_registered_device *
117 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
118 {
119 struct cfg80211_registered_device *rdev = NULL, *tmp;
120 struct net_device *netdev;
121
122 ASSERT_RTNL();
123
124 if (!attrs[NL80211_ATTR_WIPHY] &&
125 !attrs[NL80211_ATTR_IFINDEX] &&
126 !attrs[NL80211_ATTR_WDEV])
127 return ERR_PTR(-EINVAL);
128
129 if (attrs[NL80211_ATTR_WIPHY])
130 rdev = cfg80211_rdev_by_wiphy_idx(
131 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
132
133 if (attrs[NL80211_ATTR_WDEV]) {
134 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
135 struct wireless_dev *wdev;
136 bool found = false;
137
138 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
139 if (tmp) {
140 /* make sure wdev exists */
141 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
142 if (wdev->identifier != (u32)wdev_id)
143 continue;
144 found = true;
145 break;
146 }
147
148 if (!found)
149 tmp = NULL;
150
151 if (rdev && tmp != rdev)
152 return ERR_PTR(-EINVAL);
153 rdev = tmp;
154 }
155 }
156
157 if (attrs[NL80211_ATTR_IFINDEX]) {
158 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
159
160 netdev = __dev_get_by_index(netns, ifindex);
161 if (netdev) {
162 if (netdev->ieee80211_ptr)
163 tmp = wiphy_to_rdev(
164 netdev->ieee80211_ptr->wiphy);
165 else
166 tmp = NULL;
167
168 /* not wireless device -- return error */
169 if (!tmp)
170 return ERR_PTR(-EINVAL);
171
172 /* mismatch -- return error */
173 if (rdev && tmp != rdev)
174 return ERR_PTR(-EINVAL);
175
176 rdev = tmp;
177 }
178 }
179
180 if (!rdev)
181 return ERR_PTR(-ENODEV);
182
183 if (netns != wiphy_net(&rdev->wiphy))
184 return ERR_PTR(-ENODEV);
185
186 return rdev;
187 }
188
189 /*
190 * This function returns a pointer to the driver
191 * that the genl_info item that is passed refers to.
192 *
193 * The result of this can be a PTR_ERR and hence must
194 * be checked with IS_ERR() for errors.
195 */
196 static struct cfg80211_registered_device *
197 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
198 {
199 return __cfg80211_rdev_from_attrs(netns, info->attrs);
200 }
201
202 /* policy for the attributes */
203 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
204 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
205 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
206 .len = 20-1 },
207 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
208
209 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
210 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
211 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
212 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
213 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
214
215 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
216 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
217 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
219 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
220 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
221
222 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
223 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
224 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
225
226 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
227 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
228
229 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
230 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
231 .len = WLAN_MAX_KEY_LEN },
232 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
233 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
234 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
235 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
236 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
237
238 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
239 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
240 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
241 .len = IEEE80211_MAX_DATA_LEN },
242 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
243 .len = IEEE80211_MAX_DATA_LEN },
244 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
245 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
246 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
247 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
248 .len = NL80211_MAX_SUPP_RATES },
249 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
250 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
251 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
252 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_MESH_ID_LEN },
254 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
255
256 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
257 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
258
259 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
260 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
261 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
262 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
263 .len = NL80211_MAX_SUPP_RATES },
264 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
265
266 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
267 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
268
269 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
270
271 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
272 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
273 .len = IEEE80211_MAX_DATA_LEN },
274 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
275 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
276
277 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
278 .len = IEEE80211_MAX_SSID_LEN },
279 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
280 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
281 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
282 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
283 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
284 [NL80211_ATTR_STA_FLAGS2] = {
285 .len = sizeof(struct nl80211_sta_flag_update),
286 },
287 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
288 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
289 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
290 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
291 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
292 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
293 [NL80211_ATTR_PID] = { .type = NLA_U32 },
294 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
295 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN },
296 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
297 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
298 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
299 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
300 .len = IEEE80211_MAX_DATA_LEN },
301 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
302 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
303 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
304 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
305 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
306 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
307 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
308 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
309 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
310 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
311 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
312 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
313 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
314 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
315 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
316 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
317 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
318 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
319 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
320 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
321 .len = IEEE80211_MAX_DATA_LEN },
322 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
323 .len = IEEE80211_MAX_DATA_LEN },
324 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
325 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
326 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
327 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
328 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
329 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
330 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
331 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
332 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
333 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
334 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
337 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
338 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
339 .len = NL80211_HT_CAPABILITY_LEN
340 },
341 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
342 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
343 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
344 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
345 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
346 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
347 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
348 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
349 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
350 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
351 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 },
352 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
353 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
354 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
355 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
356 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
357 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
358 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
359 .len = NL80211_VHT_CAPABILITY_LEN,
360 },
361 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
362 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
363 .len = IEEE80211_MAX_DATA_LEN },
364 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
365 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
366 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
367 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
368 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
369 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
370 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
371 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
372 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
373 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
374 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
375 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
376 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
377 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
378 .len = IEEE80211_QOS_MAP_LEN_MAX },
379 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
380 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
381 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
382 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
383 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
384 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
385 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
386 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
387 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
388 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
389 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
390 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
391 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
392 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
393 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
394 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
395 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
396 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
397 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
398 .len = VHT_MUMIMO_GROUPS_DATA_LEN
399 },
400 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
401 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 },
402 [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
403 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
404 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
405 .len = FILS_MAX_KEK_LEN },
406 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
407 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
408 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
409 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
410 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
411 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
412 },
413 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
414 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
415 .len = FILS_ERP_MAX_USERNAME_LEN },
416 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
417 .len = FILS_ERP_MAX_REALM_LEN },
418 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
419 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
420 .len = FILS_ERP_MAX_RRK_LEN },
421 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 },
422 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
423 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
424 };
425
426 /* policy for the key attributes */
427 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
428 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
429 [NL80211_KEY_IDX] = { .type = NLA_U8 },
430 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
431 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
432 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
433 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
434 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
435 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
436 };
437
438 /* policy for the key default flags */
439 static const struct nla_policy
440 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
441 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
442 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
443 };
444
445 #ifdef CONFIG_PM
446 /* policy for WoWLAN attributes */
447 static const struct nla_policy
448 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
449 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
450 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
451 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
452 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
453 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
454 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
455 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
456 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
457 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
458 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
459 };
460
461 static const struct nla_policy
462 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
463 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
464 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
465 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
466 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
467 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
468 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
469 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
470 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
471 },
472 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
473 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
474 },
475 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
476 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
477 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
478 };
479 #endif /* CONFIG_PM */
480
481 /* policy for coalesce rule attributes */
482 static const struct nla_policy
483 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
484 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
485 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
486 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
487 };
488
489 /* policy for GTK rekey offload attributes */
490 static const struct nla_policy
491 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
492 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
493 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
494 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
495 };
496
497 static const struct nla_policy
498 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
499 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
500 .len = IEEE80211_MAX_SSID_LEN },
501 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN },
502 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
503 };
504
505 static const struct nla_policy
506 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
507 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
508 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
509 };
510
511 static const struct nla_policy
512 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
513 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
514 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
515 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
516 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
517 },
518 };
519
520 /* policy for NAN function attributes */
521 static const struct nla_policy
522 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
523 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
524 [NL80211_NAN_FUNC_SERVICE_ID] = {
525 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
526 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
527 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
528 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
529 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
530 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
531 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN },
532 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
533 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
534 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
535 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
536 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
537 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
538 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
539 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
540 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
541 };
542
543 /* policy for Service Response Filter attributes */
544 static const struct nla_policy
545 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
546 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
547 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
548 .len = NL80211_NAN_FUNC_SRF_MAX_LEN },
549 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
550 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
551 };
552
553 /* policy for packet pattern attributes */
554 static const struct nla_policy
555 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
556 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
557 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
558 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
559 };
560
561 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
562 struct netlink_callback *cb,
563 struct cfg80211_registered_device **rdev,
564 struct wireless_dev **wdev)
565 {
566 int err;
567
568 if (!cb->args[0]) {
569 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
570 genl_family_attrbuf(&nl80211_fam),
571 nl80211_fam.maxattr, nl80211_policy, NULL);
572 if (err)
573 return err;
574
575 *wdev = __cfg80211_wdev_from_attrs(
576 sock_net(skb->sk),
577 genl_family_attrbuf(&nl80211_fam));
578 if (IS_ERR(*wdev))
579 return PTR_ERR(*wdev);
580 *rdev = wiphy_to_rdev((*wdev)->wiphy);
581 /* 0 is the first index - add 1 to parse only once */
582 cb->args[0] = (*rdev)->wiphy_idx + 1;
583 cb->args[1] = (*wdev)->identifier;
584 } else {
585 /* subtract the 1 again here */
586 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
587 struct wireless_dev *tmp;
588
589 if (!wiphy)
590 return -ENODEV;
591 *rdev = wiphy_to_rdev(wiphy);
592 *wdev = NULL;
593
594 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
595 if (tmp->identifier == cb->args[1]) {
596 *wdev = tmp;
597 break;
598 }
599 }
600
601 if (!*wdev)
602 return -ENODEV;
603 }
604
605 return 0;
606 }
607
608 /* IE validation */
609 static bool is_valid_ie_attr(const struct nlattr *attr)
610 {
611 const u8 *pos;
612 int len;
613
614 if (!attr)
615 return true;
616
617 pos = nla_data(attr);
618 len = nla_len(attr);
619
620 while (len) {
621 u8 elemlen;
622
623 if (len < 2)
624 return false;
625 len -= 2;
626
627 elemlen = pos[1];
628 if (elemlen > len)
629 return false;
630
631 len -= elemlen;
632 pos += 2 + elemlen;
633 }
634
635 return true;
636 }
637
638 /* message building helper */
639 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
640 int flags, u8 cmd)
641 {
642 /* since there is no private header just add the generic one */
643 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
644 }
645
646 static int nl80211_msg_put_channel(struct sk_buff *msg,
647 struct ieee80211_channel *chan,
648 bool large)
649 {
650 /* Some channels must be completely excluded from the
651 * list to protect old user-space tools from breaking
652 */
653 if (!large && chan->flags &
654 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
655 return 0;
656
657 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
658 chan->center_freq))
659 goto nla_put_failure;
660
661 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
662 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
663 goto nla_put_failure;
664 if (chan->flags & IEEE80211_CHAN_NO_IR) {
665 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
666 goto nla_put_failure;
667 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
668 goto nla_put_failure;
669 }
670 if (chan->flags & IEEE80211_CHAN_RADAR) {
671 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
672 goto nla_put_failure;
673 if (large) {
674 u32 time;
675
676 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
677
678 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
679 chan->dfs_state))
680 goto nla_put_failure;
681 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
682 time))
683 goto nla_put_failure;
684 if (nla_put_u32(msg,
685 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
686 chan->dfs_cac_ms))
687 goto nla_put_failure;
688 }
689 }
690
691 if (large) {
692 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
693 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
694 goto nla_put_failure;
695 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
696 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
697 goto nla_put_failure;
698 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
699 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
700 goto nla_put_failure;
701 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
702 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
703 goto nla_put_failure;
704 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
706 goto nla_put_failure;
707 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
708 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
709 goto nla_put_failure;
710 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
711 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
712 goto nla_put_failure;
713 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
714 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
715 goto nla_put_failure;
716 }
717
718 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
719 DBM_TO_MBM(chan->max_power)))
720 goto nla_put_failure;
721
722 return 0;
723
724 nla_put_failure:
725 return -ENOBUFS;
726 }
727
728 /* netlink command implementations */
729
730 struct key_parse {
731 struct key_params p;
732 int idx;
733 int type;
734 bool def, defmgmt;
735 bool def_uni, def_multi;
736 };
737
738 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
739 struct key_parse *k)
740 {
741 struct nlattr *tb[NL80211_KEY_MAX + 1];
742 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
743 nl80211_key_policy, info->extack);
744 if (err)
745 return err;
746
747 k->def = !!tb[NL80211_KEY_DEFAULT];
748 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
749
750 if (k->def) {
751 k->def_uni = true;
752 k->def_multi = true;
753 }
754 if (k->defmgmt)
755 k->def_multi = true;
756
757 if (tb[NL80211_KEY_IDX])
758 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
759
760 if (tb[NL80211_KEY_DATA]) {
761 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
762 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
763 }
764
765 if (tb[NL80211_KEY_SEQ]) {
766 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
767 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
768 }
769
770 if (tb[NL80211_KEY_CIPHER])
771 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
772
773 if (tb[NL80211_KEY_TYPE]) {
774 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
775 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
776 return genl_err_attr(info, -EINVAL,
777 tb[NL80211_KEY_TYPE]);
778 }
779
780 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
781 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
782
783 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
784 tb[NL80211_KEY_DEFAULT_TYPES],
785 nl80211_key_default_policy,
786 info->extack);
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_old(struct genl_info *info, struct key_parse *k)
798 {
799 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
800 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
801 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
802 }
803
804 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
805 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
806 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
807 }
808
809 if (info->attrs[NL80211_ATTR_KEY_IDX])
810 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
811
812 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
813 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
814
815 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
816 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
817
818 if (k->def) {
819 k->def_uni = true;
820 k->def_multi = true;
821 }
822 if (k->defmgmt)
823 k->def_multi = true;
824
825 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
826 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
827 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) {
828 GENL_SET_ERR_MSG(info, "key type out of range");
829 return -EINVAL;
830 }
831 }
832
833 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
834 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
835 int err = nla_parse_nested(kdt,
836 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
837 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
838 nl80211_key_default_policy,
839 info->extack);
840 if (err)
841 return err;
842
843 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
844 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
845 }
846
847 return 0;
848 }
849
850 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
851 {
852 int err;
853
854 memset(k, 0, sizeof(*k));
855 k->idx = -1;
856 k->type = -1;
857
858 if (info->attrs[NL80211_ATTR_KEY])
859 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
860 else
861 err = nl80211_parse_key_old(info, k);
862
863 if (err)
864 return err;
865
866 if (k->def && k->defmgmt) {
867 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
868 return -EINVAL;
869 }
870
871 if (k->defmgmt) {
872 if (k->def_uni || !k->def_multi) {
873 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
874 return -EINVAL;
875 }
876 }
877
878 if (k->idx != -1) {
879 if (k->defmgmt) {
880 if (k->idx < 4 || k->idx > 5) {
881 GENL_SET_ERR_MSG(info,
882 "defmgmt key idx not 4 or 5");
883 return -EINVAL;
884 }
885 } else if (k->def) {
886 if (k->idx < 0 || k->idx > 3) {
887 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
888 return -EINVAL;
889 }
890 } else {
891 if (k->idx < 0 || k->idx > 5) {
892 GENL_SET_ERR_MSG(info, "key idx not 0-5");
893 return -EINVAL;
894 }
895 }
896 }
897
898 return 0;
899 }
900
901 static struct cfg80211_cached_keys *
902 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
903 struct genl_info *info, bool *no_ht)
904 {
905 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
906 struct key_parse parse;
907 struct nlattr *key;
908 struct cfg80211_cached_keys *result;
909 int rem, err, def = 0;
910 bool have_key = false;
911
912 nla_for_each_nested(key, keys, rem) {
913 have_key = true;
914 break;
915 }
916
917 if (!have_key)
918 return NULL;
919
920 result = kzalloc(sizeof(*result), GFP_KERNEL);
921 if (!result)
922 return ERR_PTR(-ENOMEM);
923
924 result->def = -1;
925
926 nla_for_each_nested(key, keys, rem) {
927 memset(&parse, 0, sizeof(parse));
928 parse.idx = -1;
929
930 err = nl80211_parse_key_new(info, key, &parse);
931 if (err)
932 goto error;
933 err = -EINVAL;
934 if (!parse.p.key)
935 goto error;
936 if (parse.idx < 0 || parse.idx > 3) {
937 GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
938 goto error;
939 }
940 if (parse.def) {
941 if (def) {
942 GENL_SET_ERR_MSG(info,
943 "only one key can be default");
944 goto error;
945 }
946 def = 1;
947 result->def = parse.idx;
948 if (!parse.def_uni || !parse.def_multi)
949 goto error;
950 } else if (parse.defmgmt)
951 goto error;
952 err = cfg80211_validate_key_settings(rdev, &parse.p,
953 parse.idx, false, NULL);
954 if (err)
955 goto error;
956 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
957 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
958 GENL_SET_ERR_MSG(info, "connect key must be WEP");
959 err = -EINVAL;
960 goto error;
961 }
962 result->params[parse.idx].cipher = parse.p.cipher;
963 result->params[parse.idx].key_len = parse.p.key_len;
964 result->params[parse.idx].key = result->data[parse.idx];
965 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
966
967 /* must be WEP key if we got here */
968 if (no_ht)
969 *no_ht = true;
970 }
971
972 if (result->def < 0) {
973 err = -EINVAL;
974 GENL_SET_ERR_MSG(info, "need a default/TX key");
975 goto error;
976 }
977
978 return result;
979 error:
980 kfree(result);
981 return ERR_PTR(err);
982 }
983
984 static int nl80211_key_allowed(struct wireless_dev *wdev)
985 {
986 ASSERT_WDEV_LOCK(wdev);
987
988 switch (wdev->iftype) {
989 case NL80211_IFTYPE_AP:
990 case NL80211_IFTYPE_AP_VLAN:
991 case NL80211_IFTYPE_P2P_GO:
992 case NL80211_IFTYPE_MESH_POINT:
993 break;
994 case NL80211_IFTYPE_ADHOC:
995 case NL80211_IFTYPE_STATION:
996 case NL80211_IFTYPE_P2P_CLIENT:
997 if (!wdev->current_bss)
998 return -ENOLINK;
999 break;
1000 case NL80211_IFTYPE_UNSPECIFIED:
1001 case NL80211_IFTYPE_OCB:
1002 case NL80211_IFTYPE_MONITOR:
1003 case NL80211_IFTYPE_NAN:
1004 case NL80211_IFTYPE_P2P_DEVICE:
1005 case NL80211_IFTYPE_WDS:
1006 case NUM_NL80211_IFTYPES:
1007 return -EINVAL;
1008 }
1009
1010 return 0;
1011 }
1012
1013 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1014 struct nlattr *tb)
1015 {
1016 struct ieee80211_channel *chan;
1017
1018 if (tb == NULL)
1019 return NULL;
1020 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1021 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1022 return NULL;
1023 return chan;
1024 }
1025
1026 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1027 {
1028 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1029 int i;
1030
1031 if (!nl_modes)
1032 goto nla_put_failure;
1033
1034 i = 0;
1035 while (ifmodes) {
1036 if ((ifmodes & 1) && nla_put_flag(msg, i))
1037 goto nla_put_failure;
1038 ifmodes >>= 1;
1039 i++;
1040 }
1041
1042 nla_nest_end(msg, nl_modes);
1043 return 0;
1044
1045 nla_put_failure:
1046 return -ENOBUFS;
1047 }
1048
1049 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1050 struct sk_buff *msg,
1051 bool large)
1052 {
1053 struct nlattr *nl_combis;
1054 int i, j;
1055
1056 nl_combis = nla_nest_start(msg,
1057 NL80211_ATTR_INTERFACE_COMBINATIONS);
1058 if (!nl_combis)
1059 goto nla_put_failure;
1060
1061 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1062 const struct ieee80211_iface_combination *c;
1063 struct nlattr *nl_combi, *nl_limits;
1064
1065 c = &wiphy->iface_combinations[i];
1066
1067 nl_combi = nla_nest_start(msg, i + 1);
1068 if (!nl_combi)
1069 goto nla_put_failure;
1070
1071 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1072 if (!nl_limits)
1073 goto nla_put_failure;
1074
1075 for (j = 0; j < c->n_limits; j++) {
1076 struct nlattr *nl_limit;
1077
1078 nl_limit = nla_nest_start(msg, j + 1);
1079 if (!nl_limit)
1080 goto nla_put_failure;
1081 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1082 c->limits[j].max))
1083 goto nla_put_failure;
1084 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1085 c->limits[j].types))
1086 goto nla_put_failure;
1087 nla_nest_end(msg, nl_limit);
1088 }
1089
1090 nla_nest_end(msg, nl_limits);
1091
1092 if (c->beacon_int_infra_match &&
1093 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1094 goto nla_put_failure;
1095 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1096 c->num_different_channels) ||
1097 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1098 c->max_interfaces))
1099 goto nla_put_failure;
1100 if (large &&
1101 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1102 c->radar_detect_widths) ||
1103 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1104 c->radar_detect_regions)))
1105 goto nla_put_failure;
1106 if (c->beacon_int_min_gcd &&
1107 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1108 c->beacon_int_min_gcd))
1109 goto nla_put_failure;
1110
1111 nla_nest_end(msg, nl_combi);
1112 }
1113
1114 nla_nest_end(msg, nl_combis);
1115
1116 return 0;
1117 nla_put_failure:
1118 return -ENOBUFS;
1119 }
1120
1121 #ifdef CONFIG_PM
1122 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1123 struct sk_buff *msg)
1124 {
1125 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1126 struct nlattr *nl_tcp;
1127
1128 if (!tcp)
1129 return 0;
1130
1131 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1132 if (!nl_tcp)
1133 return -ENOBUFS;
1134
1135 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1136 tcp->data_payload_max))
1137 return -ENOBUFS;
1138
1139 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1140 tcp->data_payload_max))
1141 return -ENOBUFS;
1142
1143 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1144 return -ENOBUFS;
1145
1146 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1147 sizeof(*tcp->tok), tcp->tok))
1148 return -ENOBUFS;
1149
1150 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1151 tcp->data_interval_max))
1152 return -ENOBUFS;
1153
1154 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1155 tcp->wake_payload_max))
1156 return -ENOBUFS;
1157
1158 nla_nest_end(msg, nl_tcp);
1159 return 0;
1160 }
1161
1162 static int nl80211_send_wowlan(struct sk_buff *msg,
1163 struct cfg80211_registered_device *rdev,
1164 bool large)
1165 {
1166 struct nlattr *nl_wowlan;
1167
1168 if (!rdev->wiphy.wowlan)
1169 return 0;
1170
1171 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1172 if (!nl_wowlan)
1173 return -ENOBUFS;
1174
1175 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1176 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1177 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1178 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1179 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1180 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1181 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1182 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1183 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1184 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1185 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1186 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1187 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1188 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1189 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1190 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1191 return -ENOBUFS;
1192
1193 if (rdev->wiphy.wowlan->n_patterns) {
1194 struct nl80211_pattern_support pat = {
1195 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1196 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1197 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1198 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1199 };
1200
1201 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1202 sizeof(pat), &pat))
1203 return -ENOBUFS;
1204 }
1205
1206 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1207 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1208 rdev->wiphy.wowlan->max_nd_match_sets))
1209 return -ENOBUFS;
1210
1211 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1212 return -ENOBUFS;
1213
1214 nla_nest_end(msg, nl_wowlan);
1215
1216 return 0;
1217 }
1218 #endif
1219
1220 static int nl80211_send_coalesce(struct sk_buff *msg,
1221 struct cfg80211_registered_device *rdev)
1222 {
1223 struct nl80211_coalesce_rule_support rule;
1224
1225 if (!rdev->wiphy.coalesce)
1226 return 0;
1227
1228 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1229 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1230 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1231 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1232 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1233 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1234
1235 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1236 return -ENOBUFS;
1237
1238 return 0;
1239 }
1240
1241 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1242 struct ieee80211_supported_band *sband)
1243 {
1244 struct nlattr *nl_rates, *nl_rate;
1245 struct ieee80211_rate *rate;
1246 int i;
1247
1248 /* add HT info */
1249 if (sband->ht_cap.ht_supported &&
1250 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1251 sizeof(sband->ht_cap.mcs),
1252 &sband->ht_cap.mcs) ||
1253 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1254 sband->ht_cap.cap) ||
1255 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1256 sband->ht_cap.ampdu_factor) ||
1257 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1258 sband->ht_cap.ampdu_density)))
1259 return -ENOBUFS;
1260
1261 /* add VHT info */
1262 if (sband->vht_cap.vht_supported &&
1263 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1264 sizeof(sband->vht_cap.vht_mcs),
1265 &sband->vht_cap.vht_mcs) ||
1266 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1267 sband->vht_cap.cap)))
1268 return -ENOBUFS;
1269
1270 /* add bitrates */
1271 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1272 if (!nl_rates)
1273 return -ENOBUFS;
1274
1275 for (i = 0; i < sband->n_bitrates; i++) {
1276 nl_rate = nla_nest_start(msg, i);
1277 if (!nl_rate)
1278 return -ENOBUFS;
1279
1280 rate = &sband->bitrates[i];
1281 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1282 rate->bitrate))
1283 return -ENOBUFS;
1284 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1285 nla_put_flag(msg,
1286 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1287 return -ENOBUFS;
1288
1289 nla_nest_end(msg, nl_rate);
1290 }
1291
1292 nla_nest_end(msg, nl_rates);
1293
1294 return 0;
1295 }
1296
1297 static int
1298 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1299 const struct ieee80211_txrx_stypes *mgmt_stypes)
1300 {
1301 u16 stypes;
1302 struct nlattr *nl_ftypes, *nl_ifs;
1303 enum nl80211_iftype ift;
1304 int i;
1305
1306 if (!mgmt_stypes)
1307 return 0;
1308
1309 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1310 if (!nl_ifs)
1311 return -ENOBUFS;
1312
1313 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1314 nl_ftypes = nla_nest_start(msg, ift);
1315 if (!nl_ftypes)
1316 return -ENOBUFS;
1317 i = 0;
1318 stypes = mgmt_stypes[ift].tx;
1319 while (stypes) {
1320 if ((stypes & 1) &&
1321 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1322 (i << 4) | IEEE80211_FTYPE_MGMT))
1323 return -ENOBUFS;
1324 stypes >>= 1;
1325 i++;
1326 }
1327 nla_nest_end(msg, nl_ftypes);
1328 }
1329
1330 nla_nest_end(msg, nl_ifs);
1331
1332 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1333 if (!nl_ifs)
1334 return -ENOBUFS;
1335
1336 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1337 nl_ftypes = nla_nest_start(msg, ift);
1338 if (!nl_ftypes)
1339 return -ENOBUFS;
1340 i = 0;
1341 stypes = mgmt_stypes[ift].rx;
1342 while (stypes) {
1343 if ((stypes & 1) &&
1344 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1345 (i << 4) | IEEE80211_FTYPE_MGMT))
1346 return -ENOBUFS;
1347 stypes >>= 1;
1348 i++;
1349 }
1350 nla_nest_end(msg, nl_ftypes);
1351 }
1352 nla_nest_end(msg, nl_ifs);
1353
1354 return 0;
1355 }
1356
1357 #define CMD(op, n) \
1358 do { \
1359 if (rdev->ops->op) { \
1360 i++; \
1361 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1362 goto nla_put_failure; \
1363 } \
1364 } while (0)
1365
1366 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1367 struct sk_buff *msg)
1368 {
1369 int i = 0;
1370
1371 /*
1372 * do *NOT* add anything into this function, new things need to be
1373 * advertised only to new versions of userspace that can deal with
1374 * the split (and they can't possibly care about new features...
1375 */
1376 CMD(add_virtual_intf, NEW_INTERFACE);
1377 CMD(change_virtual_intf, SET_INTERFACE);
1378 CMD(add_key, NEW_KEY);
1379 CMD(start_ap, START_AP);
1380 CMD(add_station, NEW_STATION);
1381 CMD(add_mpath, NEW_MPATH);
1382 CMD(update_mesh_config, SET_MESH_CONFIG);
1383 CMD(change_bss, SET_BSS);
1384 CMD(auth, AUTHENTICATE);
1385 CMD(assoc, ASSOCIATE);
1386 CMD(deauth, DEAUTHENTICATE);
1387 CMD(disassoc, DISASSOCIATE);
1388 CMD(join_ibss, JOIN_IBSS);
1389 CMD(join_mesh, JOIN_MESH);
1390 CMD(set_pmksa, SET_PMKSA);
1391 CMD(del_pmksa, DEL_PMKSA);
1392 CMD(flush_pmksa, FLUSH_PMKSA);
1393 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1394 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1395 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1396 CMD(mgmt_tx, FRAME);
1397 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1398 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1399 i++;
1400 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1401 goto nla_put_failure;
1402 }
1403 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1404 rdev->ops->join_mesh) {
1405 i++;
1406 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1407 goto nla_put_failure;
1408 }
1409 CMD(set_wds_peer, SET_WDS_PEER);
1410 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1411 CMD(tdls_mgmt, TDLS_MGMT);
1412 CMD(tdls_oper, TDLS_OPER);
1413 }
1414 if (rdev->wiphy.max_sched_scan_reqs)
1415 CMD(sched_scan_start, START_SCHED_SCAN);
1416 CMD(probe_client, PROBE_CLIENT);
1417 CMD(set_noack_map, SET_NOACK_MAP);
1418 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1419 i++;
1420 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1421 goto nla_put_failure;
1422 }
1423 CMD(start_p2p_device, START_P2P_DEVICE);
1424 CMD(set_mcast_rate, SET_MCAST_RATE);
1425 #ifdef CONFIG_NL80211_TESTMODE
1426 CMD(testmode_cmd, TESTMODE);
1427 #endif
1428
1429 if (rdev->ops->connect || rdev->ops->auth) {
1430 i++;
1431 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1432 goto nla_put_failure;
1433 }
1434
1435 if (rdev->ops->disconnect || rdev->ops->deauth) {
1436 i++;
1437 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1438 goto nla_put_failure;
1439 }
1440
1441 return i;
1442 nla_put_failure:
1443 return -ENOBUFS;
1444 }
1445
1446 struct nl80211_dump_wiphy_state {
1447 s64 filter_wiphy;
1448 long start;
1449 long split_start, band_start, chan_start, capa_start;
1450 bool split;
1451 };
1452
1453 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1454 enum nl80211_commands cmd,
1455 struct sk_buff *msg, u32 portid, u32 seq,
1456 int flags, struct nl80211_dump_wiphy_state *state)
1457 {
1458 void *hdr;
1459 struct nlattr *nl_bands, *nl_band;
1460 struct nlattr *nl_freqs, *nl_freq;
1461 struct nlattr *nl_cmds;
1462 enum nl80211_band band;
1463 struct ieee80211_channel *chan;
1464 int i;
1465 const struct ieee80211_txrx_stypes *mgmt_stypes =
1466 rdev->wiphy.mgmt_stypes;
1467 u32 features;
1468
1469 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1470 if (!hdr)
1471 return -ENOBUFS;
1472
1473 if (WARN_ON(!state))
1474 return -EINVAL;
1475
1476 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1477 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1478 wiphy_name(&rdev->wiphy)) ||
1479 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1480 cfg80211_rdev_list_generation))
1481 goto nla_put_failure;
1482
1483 if (cmd != NL80211_CMD_NEW_WIPHY)
1484 goto finish;
1485
1486 switch (state->split_start) {
1487 case 0:
1488 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1489 rdev->wiphy.retry_short) ||
1490 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1491 rdev->wiphy.retry_long) ||
1492 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1493 rdev->wiphy.frag_threshold) ||
1494 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1495 rdev->wiphy.rts_threshold) ||
1496 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1497 rdev->wiphy.coverage_class) ||
1498 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1499 rdev->wiphy.max_scan_ssids) ||
1500 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1501 rdev->wiphy.max_sched_scan_ssids) ||
1502 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1503 rdev->wiphy.max_scan_ie_len) ||
1504 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1505 rdev->wiphy.max_sched_scan_ie_len) ||
1506 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1507 rdev->wiphy.max_match_sets) ||
1508 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1509 rdev->wiphy.max_sched_scan_plans) ||
1510 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1511 rdev->wiphy.max_sched_scan_plan_interval) ||
1512 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1513 rdev->wiphy.max_sched_scan_plan_iterations))
1514 goto nla_put_failure;
1515
1516 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1517 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1518 goto nla_put_failure;
1519 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1520 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1521 goto nla_put_failure;
1522 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1523 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1524 goto nla_put_failure;
1525 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1526 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1527 goto nla_put_failure;
1528 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1529 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1530 goto nla_put_failure;
1531 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1532 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1533 goto nla_put_failure;
1534 state->split_start++;
1535 if (state->split)
1536 break;
1537 case 1:
1538 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1539 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1540 rdev->wiphy.cipher_suites))
1541 goto nla_put_failure;
1542
1543 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1544 rdev->wiphy.max_num_pmkids))
1545 goto nla_put_failure;
1546
1547 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1548 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1549 goto nla_put_failure;
1550
1551 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1552 rdev->wiphy.available_antennas_tx) ||
1553 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1554 rdev->wiphy.available_antennas_rx))
1555 goto nla_put_failure;
1556
1557 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1558 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1559 rdev->wiphy.probe_resp_offload))
1560 goto nla_put_failure;
1561
1562 if ((rdev->wiphy.available_antennas_tx ||
1563 rdev->wiphy.available_antennas_rx) &&
1564 rdev->ops->get_antenna) {
1565 u32 tx_ant = 0, rx_ant = 0;
1566 int res;
1567
1568 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1569 if (!res) {
1570 if (nla_put_u32(msg,
1571 NL80211_ATTR_WIPHY_ANTENNA_TX,
1572 tx_ant) ||
1573 nla_put_u32(msg,
1574 NL80211_ATTR_WIPHY_ANTENNA_RX,
1575 rx_ant))
1576 goto nla_put_failure;
1577 }
1578 }
1579
1580 state->split_start++;
1581 if (state->split)
1582 break;
1583 case 2:
1584 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1585 rdev->wiphy.interface_modes))
1586 goto nla_put_failure;
1587 state->split_start++;
1588 if (state->split)
1589 break;
1590 case 3:
1591 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1592 if (!nl_bands)
1593 goto nla_put_failure;
1594
1595 for (band = state->band_start;
1596 band < NUM_NL80211_BANDS; band++) {
1597 struct ieee80211_supported_band *sband;
1598
1599 sband = rdev->wiphy.bands[band];
1600
1601 if (!sband)
1602 continue;
1603
1604 nl_band = nla_nest_start(msg, band);
1605 if (!nl_band)
1606 goto nla_put_failure;
1607
1608 switch (state->chan_start) {
1609 case 0:
1610 if (nl80211_send_band_rateinfo(msg, sband))
1611 goto nla_put_failure;
1612 state->chan_start++;
1613 if (state->split)
1614 break;
1615 default:
1616 /* add frequencies */
1617 nl_freqs = nla_nest_start(
1618 msg, NL80211_BAND_ATTR_FREQS);
1619 if (!nl_freqs)
1620 goto nla_put_failure;
1621
1622 for (i = state->chan_start - 1;
1623 i < sband->n_channels;
1624 i++) {
1625 nl_freq = nla_nest_start(msg, i);
1626 if (!nl_freq)
1627 goto nla_put_failure;
1628
1629 chan = &sband->channels[i];
1630
1631 if (nl80211_msg_put_channel(
1632 msg, chan,
1633 state->split))
1634 goto nla_put_failure;
1635
1636 nla_nest_end(msg, nl_freq);
1637 if (state->split)
1638 break;
1639 }
1640 if (i < sband->n_channels)
1641 state->chan_start = i + 2;
1642 else
1643 state->chan_start = 0;
1644 nla_nest_end(msg, nl_freqs);
1645 }
1646
1647 nla_nest_end(msg, nl_band);
1648
1649 if (state->split) {
1650 /* start again here */
1651 if (state->chan_start)
1652 band--;
1653 break;
1654 }
1655 }
1656 nla_nest_end(msg, nl_bands);
1657
1658 if (band < NUM_NL80211_BANDS)
1659 state->band_start = band + 1;
1660 else
1661 state->band_start = 0;
1662
1663 /* if bands & channels are done, continue outside */
1664 if (state->band_start == 0 && state->chan_start == 0)
1665 state->split_start++;
1666 if (state->split)
1667 break;
1668 case 4:
1669 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1670 if (!nl_cmds)
1671 goto nla_put_failure;
1672
1673 i = nl80211_add_commands_unsplit(rdev, msg);
1674 if (i < 0)
1675 goto nla_put_failure;
1676 if (state->split) {
1677 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1678 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1679 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1680 CMD(channel_switch, CHANNEL_SWITCH);
1681 CMD(set_qos_map, SET_QOS_MAP);
1682 if (rdev->wiphy.features &
1683 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1684 CMD(add_tx_ts, ADD_TX_TS);
1685 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1686 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1687 }
1688 #undef CMD
1689
1690 nla_nest_end(msg, nl_cmds);
1691 state->split_start++;
1692 if (state->split)
1693 break;
1694 case 5:
1695 if (rdev->ops->remain_on_channel &&
1696 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1697 nla_put_u32(msg,
1698 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1699 rdev->wiphy.max_remain_on_channel_duration))
1700 goto nla_put_failure;
1701
1702 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1703 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1704 goto nla_put_failure;
1705
1706 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1707 goto nla_put_failure;
1708 state->split_start++;
1709 if (state->split)
1710 break;
1711 case 6:
1712 #ifdef CONFIG_PM
1713 if (nl80211_send_wowlan(msg, rdev, state->split))
1714 goto nla_put_failure;
1715 state->split_start++;
1716 if (state->split)
1717 break;
1718 #else
1719 state->split_start++;
1720 #endif
1721 case 7:
1722 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1723 rdev->wiphy.software_iftypes))
1724 goto nla_put_failure;
1725
1726 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1727 state->split))
1728 goto nla_put_failure;
1729
1730 state->split_start++;
1731 if (state->split)
1732 break;
1733 case 8:
1734 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1735 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1736 rdev->wiphy.ap_sme_capa))
1737 goto nla_put_failure;
1738
1739 features = rdev->wiphy.features;
1740 /*
1741 * We can only add the per-channel limit information if the
1742 * dump is split, otherwise it makes it too big. Therefore
1743 * only advertise it in that case.
1744 */
1745 if (state->split)
1746 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1747 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1748 goto nla_put_failure;
1749
1750 if (rdev->wiphy.ht_capa_mod_mask &&
1751 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1752 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1753 rdev->wiphy.ht_capa_mod_mask))
1754 goto nla_put_failure;
1755
1756 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1757 rdev->wiphy.max_acl_mac_addrs &&
1758 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1759 rdev->wiphy.max_acl_mac_addrs))
1760 goto nla_put_failure;
1761
1762 /*
1763 * Any information below this point is only available to
1764 * applications that can deal with it being split. This
1765 * helps ensure that newly added capabilities don't break
1766 * older tools by overrunning their buffers.
1767 *
1768 * We still increment split_start so that in the split
1769 * case we'll continue with more data in the next round,
1770 * but break unconditionally so unsplit data stops here.
1771 */
1772 state->split_start++;
1773 break;
1774 case 9:
1775 if (rdev->wiphy.extended_capabilities &&
1776 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1777 rdev->wiphy.extended_capabilities_len,
1778 rdev->wiphy.extended_capabilities) ||
1779 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1780 rdev->wiphy.extended_capabilities_len,
1781 rdev->wiphy.extended_capabilities_mask)))
1782 goto nla_put_failure;
1783
1784 if (rdev->wiphy.vht_capa_mod_mask &&
1785 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1786 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1787 rdev->wiphy.vht_capa_mod_mask))
1788 goto nla_put_failure;
1789
1790 state->split_start++;
1791 break;
1792 case 10:
1793 if (nl80211_send_coalesce(msg, rdev))
1794 goto nla_put_failure;
1795
1796 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1797 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1798 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1799 goto nla_put_failure;
1800
1801 if (rdev->wiphy.max_ap_assoc_sta &&
1802 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1803 rdev->wiphy.max_ap_assoc_sta))
1804 goto nla_put_failure;
1805
1806 state->split_start++;
1807 break;
1808 case 11:
1809 if (rdev->wiphy.n_vendor_commands) {
1810 const struct nl80211_vendor_cmd_info *info;
1811 struct nlattr *nested;
1812
1813 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1814 if (!nested)
1815 goto nla_put_failure;
1816
1817 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1818 info = &rdev->wiphy.vendor_commands[i].info;
1819 if (nla_put(msg, i + 1, sizeof(*info), info))
1820 goto nla_put_failure;
1821 }
1822 nla_nest_end(msg, nested);
1823 }
1824
1825 if (rdev->wiphy.n_vendor_events) {
1826 const struct nl80211_vendor_cmd_info *info;
1827 struct nlattr *nested;
1828
1829 nested = nla_nest_start(msg,
1830 NL80211_ATTR_VENDOR_EVENTS);
1831 if (!nested)
1832 goto nla_put_failure;
1833
1834 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1835 info = &rdev->wiphy.vendor_events[i];
1836 if (nla_put(msg, i + 1, sizeof(*info), info))
1837 goto nla_put_failure;
1838 }
1839 nla_nest_end(msg, nested);
1840 }
1841 state->split_start++;
1842 break;
1843 case 12:
1844 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1845 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1846 rdev->wiphy.max_num_csa_counters))
1847 goto nla_put_failure;
1848
1849 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1850 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1851 goto nla_put_failure;
1852
1853 if (rdev->wiphy.max_sched_scan_reqs &&
1854 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1855 rdev->wiphy.max_sched_scan_reqs))
1856 goto nla_put_failure;
1857
1858 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1859 sizeof(rdev->wiphy.ext_features),
1860 rdev->wiphy.ext_features))
1861 goto nla_put_failure;
1862
1863 if (rdev->wiphy.bss_select_support) {
1864 struct nlattr *nested;
1865 u32 bss_select_support = rdev->wiphy.bss_select_support;
1866
1867 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1868 if (!nested)
1869 goto nla_put_failure;
1870
1871 i = 0;
1872 while (bss_select_support) {
1873 if ((bss_select_support & 1) &&
1874 nla_put_flag(msg, i))
1875 goto nla_put_failure;
1876 i++;
1877 bss_select_support >>= 1;
1878 }
1879 nla_nest_end(msg, nested);
1880 }
1881
1882 state->split_start++;
1883 break;
1884 case 13:
1885 if (rdev->wiphy.num_iftype_ext_capab &&
1886 rdev->wiphy.iftype_ext_capab) {
1887 struct nlattr *nested_ext_capab, *nested;
1888
1889 nested = nla_nest_start(msg,
1890 NL80211_ATTR_IFTYPE_EXT_CAPA);
1891 if (!nested)
1892 goto nla_put_failure;
1893
1894 for (i = state->capa_start;
1895 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1896 const struct wiphy_iftype_ext_capab *capab;
1897
1898 capab = &rdev->wiphy.iftype_ext_capab[i];
1899
1900 nested_ext_capab = nla_nest_start(msg, i);
1901 if (!nested_ext_capab ||
1902 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1903 capab->iftype) ||
1904 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1905 capab->extended_capabilities_len,
1906 capab->extended_capabilities) ||
1907 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1908 capab->extended_capabilities_len,
1909 capab->extended_capabilities_mask))
1910 goto nla_put_failure;
1911
1912 nla_nest_end(msg, nested_ext_capab);
1913 if (state->split)
1914 break;
1915 }
1916 nla_nest_end(msg, nested);
1917 if (i < rdev->wiphy.num_iftype_ext_capab) {
1918 state->capa_start = i + 1;
1919 break;
1920 }
1921 }
1922
1923 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1924 rdev->wiphy.nan_supported_bands))
1925 goto nla_put_failure;
1926
1927 /* done */
1928 state->split_start = 0;
1929 break;
1930 }
1931 finish:
1932 genlmsg_end(msg, hdr);
1933 return 0;
1934
1935 nla_put_failure:
1936 genlmsg_cancel(msg, hdr);
1937 return -EMSGSIZE;
1938 }
1939
1940 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1941 struct netlink_callback *cb,
1942 struct nl80211_dump_wiphy_state *state)
1943 {
1944 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1945 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1946 nl80211_fam.maxattr, nl80211_policy, NULL);
1947 /* ignore parse errors for backward compatibility */
1948 if (ret)
1949 return 0;
1950
1951 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1952 if (tb[NL80211_ATTR_WIPHY])
1953 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1954 if (tb[NL80211_ATTR_WDEV])
1955 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1956 if (tb[NL80211_ATTR_IFINDEX]) {
1957 struct net_device *netdev;
1958 struct cfg80211_registered_device *rdev;
1959 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1960
1961 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1962 if (!netdev)
1963 return -ENODEV;
1964 if (netdev->ieee80211_ptr) {
1965 rdev = wiphy_to_rdev(
1966 netdev->ieee80211_ptr->wiphy);
1967 state->filter_wiphy = rdev->wiphy_idx;
1968 }
1969 }
1970
1971 return 0;
1972 }
1973
1974 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1975 {
1976 int idx = 0, ret;
1977 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1978 struct cfg80211_registered_device *rdev;
1979
1980 rtnl_lock();
1981 if (!state) {
1982 state = kzalloc(sizeof(*state), GFP_KERNEL);
1983 if (!state) {
1984 rtnl_unlock();
1985 return -ENOMEM;
1986 }
1987 state->filter_wiphy = -1;
1988 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1989 if (ret) {
1990 kfree(state);
1991 rtnl_unlock();
1992 return ret;
1993 }
1994 cb->args[0] = (long)state;
1995 }
1996
1997 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1998 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1999 continue;
2000 if (++idx <= state->start)
2001 continue;
2002 if (state->filter_wiphy != -1 &&
2003 state->filter_wiphy != rdev->wiphy_idx)
2004 continue;
2005 /* attempt to fit multiple wiphy data chunks into the skb */
2006 do {
2007 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2008 skb,
2009 NETLINK_CB(cb->skb).portid,
2010 cb->nlh->nlmsg_seq,
2011 NLM_F_MULTI, state);
2012 if (ret < 0) {
2013 /*
2014 * If sending the wiphy data didn't fit (ENOBUFS
2015 * or EMSGSIZE returned), this SKB is still
2016 * empty (so it's not too big because another
2017 * wiphy dataset is already in the skb) and
2018 * we've not tried to adjust the dump allocation
2019 * yet ... then adjust the alloc size to be
2020 * bigger, and return 1 but with the empty skb.
2021 * This results in an empty message being RX'ed
2022 * in userspace, but that is ignored.
2023 *
2024 * We can then retry with the larger buffer.
2025 */
2026 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2027 !skb->len && !state->split &&
2028 cb->min_dump_alloc < 4096) {
2029 cb->min_dump_alloc = 4096;
2030 state->split_start = 0;
2031 rtnl_unlock();
2032 return 1;
2033 }
2034 idx--;
2035 break;
2036 }
2037 } while (state->split_start > 0);
2038 break;
2039 }
2040 rtnl_unlock();
2041
2042 state->start = idx;
2043
2044 return skb->len;
2045 }
2046
2047 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2048 {
2049 kfree((void *)cb->args[0]);
2050 return 0;
2051 }
2052
2053 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2054 {
2055 struct sk_buff *msg;
2056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2057 struct nl80211_dump_wiphy_state state = {};
2058
2059 msg = nlmsg_new(4096, GFP_KERNEL);
2060 if (!msg)
2061 return -ENOMEM;
2062
2063 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2064 info->snd_portid, info->snd_seq, 0,
2065 &state) < 0) {
2066 nlmsg_free(msg);
2067 return -ENOBUFS;
2068 }
2069
2070 return genlmsg_reply(msg, info);
2071 }
2072
2073 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2074 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2075 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2076 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2077 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2078 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2079 };
2080
2081 static int parse_txq_params(struct nlattr *tb[],
2082 struct ieee80211_txq_params *txq_params)
2083 {
2084 u8 ac;
2085
2086 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2087 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2088 !tb[NL80211_TXQ_ATTR_AIFS])
2089 return -EINVAL;
2090
2091 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2092 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2093 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2094 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2095 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2096
2097 if (ac >= NL80211_NUM_ACS)
2098 return -EINVAL;
2099 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2100 return 0;
2101 }
2102
2103 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2104 {
2105 /*
2106 * You can only set the channel explicitly for WDS interfaces,
2107 * all others have their channel managed via their respective
2108 * "establish a connection" command (connect, join, ...)
2109 *
2110 * For AP/GO and mesh mode, the channel can be set with the
2111 * channel userspace API, but is only stored and passed to the
2112 * low-level driver when the AP starts or the mesh is joined.
2113 * This is for backward compatibility, userspace can also give
2114 * the channel in the start-ap or join-mesh commands instead.
2115 *
2116 * Monitors are special as they are normally slaved to
2117 * whatever else is going on, so they have their own special
2118 * operation to set the monitor channel if possible.
2119 */
2120 return !wdev ||
2121 wdev->iftype == NL80211_IFTYPE_AP ||
2122 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2123 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2124 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2125 }
2126
2127 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2128 struct genl_info *info,
2129 struct cfg80211_chan_def *chandef)
2130 {
2131 u32 control_freq;
2132
2133 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2134 return -EINVAL;
2135
2136 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2137
2138 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2139 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2140 chandef->center_freq1 = control_freq;
2141 chandef->center_freq2 = 0;
2142
2143 /* Primary channel not allowed */
2144 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2145 return -EINVAL;
2146
2147 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2148 enum nl80211_channel_type chantype;
2149
2150 chantype = nla_get_u32(
2151 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2152
2153 switch (chantype) {
2154 case NL80211_CHAN_NO_HT:
2155 case NL80211_CHAN_HT20:
2156 case NL80211_CHAN_HT40PLUS:
2157 case NL80211_CHAN_HT40MINUS:
2158 cfg80211_chandef_create(chandef, chandef->chan,
2159 chantype);
2160 /* user input for center_freq is incorrect */
2161 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2162 chandef->center_freq1 != nla_get_u32(
2163 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2164 return -EINVAL;
2165 /* center_freq2 must be zero */
2166 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2167 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2168 return -EINVAL;
2169 break;
2170 default:
2171 return -EINVAL;
2172 }
2173 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2174 chandef->width =
2175 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2176 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2177 chandef->center_freq1 =
2178 nla_get_u32(
2179 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2180 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2181 chandef->center_freq2 =
2182 nla_get_u32(
2183 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2184 }
2185
2186 if (!cfg80211_chandef_valid(chandef))
2187 return -EINVAL;
2188
2189 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2190 IEEE80211_CHAN_DISABLED))
2191 return -EINVAL;
2192
2193 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2194 chandef->width == NL80211_CHAN_WIDTH_10) &&
2195 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2196 return -EINVAL;
2197
2198 return 0;
2199 }
2200
2201 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2202 struct net_device *dev,
2203 struct genl_info *info)
2204 {
2205 struct cfg80211_chan_def chandef;
2206 int result;
2207 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2208 struct wireless_dev *wdev = NULL;
2209
2210 if (dev)
2211 wdev = dev->ieee80211_ptr;
2212 if (!nl80211_can_set_dev_channel(wdev))
2213 return -EOPNOTSUPP;
2214 if (wdev)
2215 iftype = wdev->iftype;
2216
2217 result = nl80211_parse_chandef(rdev, info, &chandef);
2218 if (result)
2219 return result;
2220
2221 switch (iftype) {
2222 case NL80211_IFTYPE_AP:
2223 case NL80211_IFTYPE_P2P_GO:
2224 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2225 iftype)) {
2226 result = -EINVAL;
2227 break;
2228 }
2229 if (wdev->beacon_interval) {
2230 if (!dev || !rdev->ops->set_ap_chanwidth ||
2231 !(rdev->wiphy.features &
2232 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2233 result = -EBUSY;
2234 break;
2235 }
2236
2237 /* Only allow dynamic channel width changes */
2238 if (chandef.chan != wdev->preset_chandef.chan) {
2239 result = -EBUSY;
2240 break;
2241 }
2242 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2243 if (result)
2244 break;
2245 }
2246 wdev->preset_chandef = chandef;
2247 result = 0;
2248 break;
2249 case NL80211_IFTYPE_MESH_POINT:
2250 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2251 break;
2252 case NL80211_IFTYPE_MONITOR:
2253 result = cfg80211_set_monitor_channel(rdev, &chandef);
2254 break;
2255 default:
2256 result = -EINVAL;
2257 }
2258
2259 return result;
2260 }
2261
2262 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2263 {
2264 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2265 struct net_device *netdev = info->user_ptr[1];
2266
2267 return __nl80211_set_channel(rdev, netdev, info);
2268 }
2269
2270 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2271 {
2272 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2273 struct net_device *dev = info->user_ptr[1];
2274 struct wireless_dev *wdev = dev->ieee80211_ptr;
2275 const u8 *bssid;
2276
2277 if (!info->attrs[NL80211_ATTR_MAC])
2278 return -EINVAL;
2279
2280 if (netif_running(dev))
2281 return -EBUSY;
2282
2283 if (!rdev->ops->set_wds_peer)
2284 return -EOPNOTSUPP;
2285
2286 if (wdev->iftype != NL80211_IFTYPE_WDS)
2287 return -EOPNOTSUPP;
2288
2289 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2290 return rdev_set_wds_peer(rdev, dev, bssid);
2291 }
2292
2293 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2294 {
2295 struct cfg80211_registered_device *rdev;
2296 struct net_device *netdev = NULL;
2297 struct wireless_dev *wdev;
2298 int result = 0, rem_txq_params = 0;
2299 struct nlattr *nl_txq_params;
2300 u32 changed;
2301 u8 retry_short = 0, retry_long = 0;
2302 u32 frag_threshold = 0, rts_threshold = 0;
2303 u8 coverage_class = 0;
2304
2305 ASSERT_RTNL();
2306
2307 /*
2308 * Try to find the wiphy and netdev. Normally this
2309 * function shouldn't need the netdev, but this is
2310 * done for backward compatibility -- previously
2311 * setting the channel was done per wiphy, but now
2312 * it is per netdev. Previous userland like hostapd
2313 * also passed a netdev to set_wiphy, so that it is
2314 * possible to let that go to the right netdev!
2315 */
2316
2317 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2318 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2319
2320 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2321 if (netdev && netdev->ieee80211_ptr)
2322 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2323 else
2324 netdev = NULL;
2325 }
2326
2327 if (!netdev) {
2328 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2329 info->attrs);
2330 if (IS_ERR(rdev))
2331 return PTR_ERR(rdev);
2332 wdev = NULL;
2333 netdev = NULL;
2334 result = 0;
2335 } else
2336 wdev = netdev->ieee80211_ptr;
2337
2338 /*
2339 * end workaround code, by now the rdev is available
2340 * and locked, and wdev may or may not be NULL.
2341 */
2342
2343 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2344 result = cfg80211_dev_rename(
2345 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2346
2347 if (result)
2348 return result;
2349
2350 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2351 struct ieee80211_txq_params txq_params;
2352 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2353
2354 if (!rdev->ops->set_txq_params)
2355 return -EOPNOTSUPP;
2356
2357 if (!netdev)
2358 return -EINVAL;
2359
2360 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2361 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2362 return -EINVAL;
2363
2364 if (!netif_running(netdev))
2365 return -ENETDOWN;
2366
2367 nla_for_each_nested(nl_txq_params,
2368 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2369 rem_txq_params) {
2370 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2371 nl_txq_params,
2372 txq_params_policy,
2373 info->extack);
2374 if (result)
2375 return result;
2376 result = parse_txq_params(tb, &txq_params);
2377 if (result)
2378 return result;
2379
2380 result = rdev_set_txq_params(rdev, netdev,
2381 &txq_params);
2382 if (result)
2383 return result;
2384 }
2385 }
2386
2387 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2388 result = __nl80211_set_channel(
2389 rdev,
2390 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2391 info);
2392 if (result)
2393 return result;
2394 }
2395
2396 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2397 struct wireless_dev *txp_wdev = wdev;
2398 enum nl80211_tx_power_setting type;
2399 int idx, mbm = 0;
2400
2401 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2402 txp_wdev = NULL;
2403
2404 if (!rdev->ops->set_tx_power)
2405 return -EOPNOTSUPP;
2406
2407 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2408 type = nla_get_u32(info->attrs[idx]);
2409
2410 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2411 (type != NL80211_TX_POWER_AUTOMATIC))
2412 return -EINVAL;
2413
2414 if (type != NL80211_TX_POWER_AUTOMATIC) {
2415 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2416 mbm = nla_get_u32(info->attrs[idx]);
2417 }
2418
2419 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2420 if (result)
2421 return result;
2422 }
2423
2424 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2425 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2426 u32 tx_ant, rx_ant;
2427
2428 if ((!rdev->wiphy.available_antennas_tx &&
2429 !rdev->wiphy.available_antennas_rx) ||
2430 !rdev->ops->set_antenna)
2431 return -EOPNOTSUPP;
2432
2433 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2434 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2435
2436 /* reject antenna configurations which don't match the
2437 * available antenna masks, except for the "all" mask */
2438 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2439 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2440 return -EINVAL;
2441
2442 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2443 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2444
2445 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2446 if (result)
2447 return result;
2448 }
2449
2450 changed = 0;
2451
2452 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2453 retry_short = nla_get_u8(
2454 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2455 if (retry_short == 0)
2456 return -EINVAL;
2457
2458 changed |= WIPHY_PARAM_RETRY_SHORT;
2459 }
2460
2461 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2462 retry_long = nla_get_u8(
2463 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2464 if (retry_long == 0)
2465 return -EINVAL;
2466
2467 changed |= WIPHY_PARAM_RETRY_LONG;
2468 }
2469
2470 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2471 frag_threshold = nla_get_u32(
2472 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2473 if (frag_threshold < 256)
2474 return -EINVAL;
2475
2476 if (frag_threshold != (u32) -1) {
2477 /*
2478 * Fragments (apart from the last one) are required to
2479 * have even length. Make the fragmentation code
2480 * simpler by stripping LSB should someone try to use
2481 * odd threshold value.
2482 */
2483 frag_threshold &= ~0x1;
2484 }
2485 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2486 }
2487
2488 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2489 rts_threshold = nla_get_u32(
2490 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2491 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2492 }
2493
2494 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2495 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2496 return -EINVAL;
2497
2498 coverage_class = nla_get_u8(
2499 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2500 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2501 }
2502
2503 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2504 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2505 return -EOPNOTSUPP;
2506
2507 changed |= WIPHY_PARAM_DYN_ACK;
2508 }
2509
2510 if (changed) {
2511 u8 old_retry_short, old_retry_long;
2512 u32 old_frag_threshold, old_rts_threshold;
2513 u8 old_coverage_class;
2514
2515 if (!rdev->ops->set_wiphy_params)
2516 return -EOPNOTSUPP;
2517
2518 old_retry_short = rdev->wiphy.retry_short;
2519 old_retry_long = rdev->wiphy.retry_long;
2520 old_frag_threshold = rdev->wiphy.frag_threshold;
2521 old_rts_threshold = rdev->wiphy.rts_threshold;
2522 old_coverage_class = rdev->wiphy.coverage_class;
2523
2524 if (changed & WIPHY_PARAM_RETRY_SHORT)
2525 rdev->wiphy.retry_short = retry_short;
2526 if (changed & WIPHY_PARAM_RETRY_LONG)
2527 rdev->wiphy.retry_long = retry_long;
2528 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2529 rdev->wiphy.frag_threshold = frag_threshold;
2530 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2531 rdev->wiphy.rts_threshold = rts_threshold;
2532 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2533 rdev->wiphy.coverage_class = coverage_class;
2534
2535 result = rdev_set_wiphy_params(rdev, changed);
2536 if (result) {
2537 rdev->wiphy.retry_short = old_retry_short;
2538 rdev->wiphy.retry_long = old_retry_long;
2539 rdev->wiphy.frag_threshold = old_frag_threshold;
2540 rdev->wiphy.rts_threshold = old_rts_threshold;
2541 rdev->wiphy.coverage_class = old_coverage_class;
2542 return result;
2543 }
2544 }
2545 return 0;
2546 }
2547
2548 static inline u64 wdev_id(struct wireless_dev *wdev)
2549 {
2550 return (u64)wdev->identifier |
2551 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2552 }
2553
2554 static int nl80211_send_chandef(struct sk_buff *msg,
2555 const struct cfg80211_chan_def *chandef)
2556 {
2557 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2558 return -EINVAL;
2559
2560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2561 chandef->chan->center_freq))
2562 return -ENOBUFS;
2563 switch (chandef->width) {
2564 case NL80211_CHAN_WIDTH_20_NOHT:
2565 case NL80211_CHAN_WIDTH_20:
2566 case NL80211_CHAN_WIDTH_40:
2567 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2568 cfg80211_get_chandef_type(chandef)))
2569 return -ENOBUFS;
2570 break;
2571 default:
2572 break;
2573 }
2574 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2575 return -ENOBUFS;
2576 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2577 return -ENOBUFS;
2578 if (chandef->center_freq2 &&
2579 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2580 return -ENOBUFS;
2581 return 0;
2582 }
2583
2584 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2585 struct cfg80211_registered_device *rdev,
2586 struct wireless_dev *wdev, bool removal)
2587 {
2588 struct net_device *dev = wdev->netdev;
2589 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2590 void *hdr;
2591
2592 if (removal)
2593 cmd = NL80211_CMD_DEL_INTERFACE;
2594
2595 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2596 if (!hdr)
2597 return -1;
2598
2599 if (dev &&
2600 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2601 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2602 goto nla_put_failure;
2603
2604 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2605 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2606 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2607 NL80211_ATTR_PAD) ||
2608 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2609 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2610 rdev->devlist_generation ^
2611 (cfg80211_rdev_list_generation << 2)))
2612 goto nla_put_failure;
2613
2614 if (rdev->ops->get_channel) {
2615 int ret;
2616 struct cfg80211_chan_def chandef;
2617
2618 ret = rdev_get_channel(rdev, wdev, &chandef);
2619 if (ret == 0) {
2620 if (nl80211_send_chandef(msg, &chandef))
2621 goto nla_put_failure;
2622 }
2623 }
2624
2625 if (rdev->ops->get_tx_power) {
2626 int dbm, ret;
2627
2628 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2629 if (ret == 0 &&
2630 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2631 DBM_TO_MBM(dbm)))
2632 goto nla_put_failure;
2633 }
2634
2635 wdev_lock(wdev);
2636 switch (wdev->iftype) {
2637 case NL80211_IFTYPE_AP:
2638 if (wdev->ssid_len &&
2639 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2640 goto nla_put_failure_locked;
2641 break;
2642 case NL80211_IFTYPE_STATION:
2643 case NL80211_IFTYPE_P2P_CLIENT:
2644 case NL80211_IFTYPE_ADHOC: {
2645 const u8 *ssid_ie;
2646 if (!wdev->current_bss)
2647 break;
2648 rcu_read_lock();
2649 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2650 WLAN_EID_SSID);
2651 if (ssid_ie &&
2652 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2653 goto nla_put_failure_rcu_locked;
2654 rcu_read_unlock();
2655 break;
2656 }
2657 default:
2658 /* nothing */
2659 break;
2660 }
2661 wdev_unlock(wdev);
2662
2663 genlmsg_end(msg, hdr);
2664 return 0;
2665
2666 nla_put_failure_rcu_locked:
2667 rcu_read_unlock();
2668 nla_put_failure_locked:
2669 wdev_unlock(wdev);
2670 nla_put_failure:
2671 genlmsg_cancel(msg, hdr);
2672 return -EMSGSIZE;
2673 }
2674
2675 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2676 {
2677 int wp_idx = 0;
2678 int if_idx = 0;
2679 int wp_start = cb->args[0];
2680 int if_start = cb->args[1];
2681 int filter_wiphy = -1;
2682 struct cfg80211_registered_device *rdev;
2683 struct wireless_dev *wdev;
2684 int ret;
2685
2686 rtnl_lock();
2687 if (!cb->args[2]) {
2688 struct nl80211_dump_wiphy_state state = {
2689 .filter_wiphy = -1,
2690 };
2691
2692 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2693 if (ret)
2694 goto out_unlock;
2695
2696 filter_wiphy = state.filter_wiphy;
2697
2698 /*
2699 * if filtering, set cb->args[2] to +1 since 0 is the default
2700 * value needed to determine that parsing is necessary.
2701 */
2702 if (filter_wiphy >= 0)
2703 cb->args[2] = filter_wiphy + 1;
2704 else
2705 cb->args[2] = -1;
2706 } else if (cb->args[2] > 0) {
2707 filter_wiphy = cb->args[2] - 1;
2708 }
2709
2710 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2711 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2712 continue;
2713 if (wp_idx < wp_start) {
2714 wp_idx++;
2715 continue;
2716 }
2717
2718 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2719 continue;
2720
2721 if_idx = 0;
2722
2723 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2724 if (if_idx < if_start) {
2725 if_idx++;
2726 continue;
2727 }
2728 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2729 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2730 rdev, wdev, false) < 0) {
2731 goto out;
2732 }
2733 if_idx++;
2734 }
2735
2736 wp_idx++;
2737 }
2738 out:
2739 cb->args[0] = wp_idx;
2740 cb->args[1] = if_idx;
2741
2742 ret = skb->len;
2743 out_unlock:
2744 rtnl_unlock();
2745
2746 return ret;
2747 }
2748
2749 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2750 {
2751 struct sk_buff *msg;
2752 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2753 struct wireless_dev *wdev = info->user_ptr[1];
2754
2755 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2756 if (!msg)
2757 return -ENOMEM;
2758
2759 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2760 rdev, wdev, false) < 0) {
2761 nlmsg_free(msg);
2762 return -ENOBUFS;
2763 }
2764
2765 return genlmsg_reply(msg, info);
2766 }
2767
2768 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2769 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2770 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2771 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2772 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2773 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2774 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2775 };
2776
2777 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2778 {
2779 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2780 int flag;
2781
2782 *mntrflags = 0;
2783
2784 if (!nla)
2785 return -EINVAL;
2786
2787 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2788 mntr_flags_policy, NULL))
2789 return -EINVAL;
2790
2791 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2792 if (flags[flag])
2793 *mntrflags |= (1<<flag);
2794
2795 *mntrflags |= MONITOR_FLAG_CHANGED;
2796
2797 return 0;
2798 }
2799
2800 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2801 enum nl80211_iftype type,
2802 struct genl_info *info,
2803 struct vif_params *params)
2804 {
2805 bool change = false;
2806 int err;
2807
2808 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2809 if (type != NL80211_IFTYPE_MONITOR)
2810 return -EINVAL;
2811
2812 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2813 &params->flags);
2814 if (err)
2815 return err;
2816
2817 change = true;
2818 }
2819
2820 if (params->flags & MONITOR_FLAG_ACTIVE &&
2821 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2822 return -EOPNOTSUPP;
2823
2824 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2825 const u8 *mumimo_groups;
2826 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2827
2828 if (type != NL80211_IFTYPE_MONITOR)
2829 return -EINVAL;
2830
2831 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2832 return -EOPNOTSUPP;
2833
2834 mumimo_groups =
2835 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2836
2837 /* bits 0 and 63 are reserved and must be zero */
2838 if ((mumimo_groups[0] & BIT(0)) ||
2839 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2840 return -EINVAL;
2841
2842 params->vht_mumimo_groups = mumimo_groups;
2843 change = true;
2844 }
2845
2846 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2847 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2848
2849 if (type != NL80211_IFTYPE_MONITOR)
2850 return -EINVAL;
2851
2852 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2853 return -EOPNOTSUPP;
2854
2855 params->vht_mumimo_follow_addr =
2856 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2857 change = true;
2858 }
2859
2860 return change ? 1 : 0;
2861 }
2862
2863 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2864 struct net_device *netdev, u8 use_4addr,
2865 enum nl80211_iftype iftype)
2866 {
2867 if (!use_4addr) {
2868 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2869 return -EBUSY;
2870 return 0;
2871 }
2872
2873 switch (iftype) {
2874 case NL80211_IFTYPE_AP_VLAN:
2875 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2876 return 0;
2877 break;
2878 case NL80211_IFTYPE_STATION:
2879 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2880 return 0;
2881 break;
2882 default:
2883 break;
2884 }
2885
2886 return -EOPNOTSUPP;
2887 }
2888
2889 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2890 {
2891 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2892 struct vif_params params;
2893 int err;
2894 enum nl80211_iftype otype, ntype;
2895 struct net_device *dev = info->user_ptr[1];
2896 bool change = false;
2897
2898 memset(&params, 0, sizeof(params));
2899
2900 otype = ntype = dev->ieee80211_ptr->iftype;
2901
2902 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2903 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2904 if (otype != ntype)
2905 change = true;
2906 if (ntype > NL80211_IFTYPE_MAX)
2907 return -EINVAL;
2908 }
2909
2910 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2911 struct wireless_dev *wdev = dev->ieee80211_ptr;
2912
2913 if (ntype != NL80211_IFTYPE_MESH_POINT)
2914 return -EINVAL;
2915 if (netif_running(dev))
2916 return -EBUSY;
2917
2918 wdev_lock(wdev);
2919 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2920 IEEE80211_MAX_MESH_ID_LEN);
2921 wdev->mesh_id_up_len =
2922 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2923 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2924 wdev->mesh_id_up_len);
2925 wdev_unlock(wdev);
2926 }
2927
2928 if (info->attrs[NL80211_ATTR_4ADDR]) {
2929 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2930 change = true;
2931 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2932 if (err)
2933 return err;
2934 } else {
2935 params.use_4addr = -1;
2936 }
2937
2938 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2939 if (err < 0)
2940 return err;
2941 if (err > 0)
2942 change = true;
2943
2944 if (change)
2945 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2946 else
2947 err = 0;
2948
2949 if (!err && params.use_4addr != -1)
2950 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2951
2952 return err;
2953 }
2954
2955 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2956 {
2957 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2958 struct vif_params params;
2959 struct wireless_dev *wdev;
2960 struct sk_buff *msg;
2961 int err;
2962 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2963
2964 /* to avoid failing a new interface creation due to pending removal */
2965 cfg80211_destroy_ifaces(rdev);
2966
2967 memset(&params, 0, sizeof(params));
2968
2969 if (!info->attrs[NL80211_ATTR_IFNAME])
2970 return -EINVAL;
2971
2972 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2973 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2974 if (type > NL80211_IFTYPE_MAX)
2975 return -EINVAL;
2976 }
2977
2978 if (!rdev->ops->add_virtual_intf ||
2979 !(rdev->wiphy.interface_modes & (1 << type)))
2980 return -EOPNOTSUPP;
2981
2982 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2983 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2984 info->attrs[NL80211_ATTR_MAC]) {
2985 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2986 ETH_ALEN);
2987 if (!is_valid_ether_addr(params.macaddr))
2988 return -EADDRNOTAVAIL;
2989 }
2990
2991 if (info->attrs[NL80211_ATTR_4ADDR]) {
2992 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2993 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2994 if (err)
2995 return err;
2996 }
2997
2998 err = nl80211_parse_mon_options(rdev, type, info, &params);
2999 if (err < 0)
3000 return err;
3001
3002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3003 if (!msg)
3004 return -ENOMEM;
3005
3006 wdev = rdev_add_virtual_intf(rdev,
3007 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3008 NET_NAME_USER, type, &params);
3009 if (WARN_ON(!wdev)) {
3010 nlmsg_free(msg);
3011 return -EPROTO;
3012 } else if (IS_ERR(wdev)) {
3013 nlmsg_free(msg);
3014 return PTR_ERR(wdev);
3015 }
3016
3017 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3018 wdev->owner_nlportid = info->snd_portid;
3019
3020 switch (type) {
3021 case NL80211_IFTYPE_MESH_POINT:
3022 if (!info->attrs[NL80211_ATTR_MESH_ID])
3023 break;
3024 wdev_lock(wdev);
3025 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3026 IEEE80211_MAX_MESH_ID_LEN);
3027 wdev->mesh_id_up_len =
3028 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3029 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3030 wdev->mesh_id_up_len);
3031 wdev_unlock(wdev);
3032 break;
3033 case NL80211_IFTYPE_NAN:
3034 case NL80211_IFTYPE_P2P_DEVICE:
3035 /*
3036 * P2P Device and NAN do not have a netdev, so don't go
3037 * through the netdev notifier and must be added here
3038 */
3039 mutex_init(&wdev->mtx);
3040 INIT_LIST_HEAD(&wdev->event_list);
3041 spin_lock_init(&wdev->event_lock);
3042 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3043 spin_lock_init(&wdev->mgmt_registrations_lock);
3044
3045 wdev->identifier = ++rdev->wdev_id;
3046 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3047 rdev->devlist_generation++;
3048 break;
3049 default:
3050 break;
3051 }
3052
3053 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3054 rdev, wdev, false) < 0) {
3055 nlmsg_free(msg);
3056 return -ENOBUFS;
3057 }
3058
3059 /*
3060 * For wdevs which have no associated netdev object (e.g. of type
3061 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3062 * For all other types, the event will be generated from the
3063 * netdev notifier
3064 */
3065 if (!wdev->netdev)
3066 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3067
3068 return genlmsg_reply(msg, info);
3069 }
3070
3071 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3072 {
3073 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3074 struct wireless_dev *wdev = info->user_ptr[1];
3075
3076 if (!rdev->ops->del_virtual_intf)
3077 return -EOPNOTSUPP;
3078
3079 /*
3080 * If we remove a wireless device without a netdev then clear
3081 * user_ptr[1] so that nl80211_post_doit won't dereference it
3082 * to check if it needs to do dev_put(). Otherwise it crashes
3083 * since the wdev has been freed, unlike with a netdev where
3084 * we need the dev_put() for the netdev to really be freed.
3085 */
3086 if (!wdev->netdev)
3087 info->user_ptr[1] = NULL;
3088
3089 return rdev_del_virtual_intf(rdev, wdev);
3090 }
3091
3092 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3093 {
3094 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3095 struct net_device *dev = info->user_ptr[1];
3096 u16 noack_map;
3097
3098 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3099 return -EINVAL;
3100
3101 if (!rdev->ops->set_noack_map)
3102 return -EOPNOTSUPP;
3103
3104 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3105
3106 return rdev_set_noack_map(rdev, dev, noack_map);
3107 }
3108
3109 struct get_key_cookie {
3110 struct sk_buff *msg;
3111 int error;
3112 int idx;
3113 };
3114
3115 static void get_key_callback(void *c, struct key_params *params)
3116 {
3117 struct nlattr *key;
3118 struct get_key_cookie *cookie = c;
3119
3120 if ((params->key &&
3121 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3122 params->key_len, params->key)) ||
3123 (params->seq &&
3124 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3125 params->seq_len, params->seq)) ||
3126 (params->cipher &&
3127 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3128 params->cipher)))
3129 goto nla_put_failure;
3130
3131 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3132 if (!key)
3133 goto nla_put_failure;
3134
3135 if ((params->key &&
3136 nla_put(cookie->msg, NL80211_KEY_DATA,
3137 params->key_len, params->key)) ||
3138 (params->seq &&
3139 nla_put(cookie->msg, NL80211_KEY_SEQ,
3140 params->seq_len, params->seq)) ||
3141 (params->cipher &&
3142 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3143 params->cipher)))
3144 goto nla_put_failure;
3145
3146 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3147 goto nla_put_failure;
3148
3149 nla_nest_end(cookie->msg, key);
3150
3151 return;
3152 nla_put_failure:
3153 cookie->error = 1;
3154 }
3155
3156 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3157 {
3158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3159 int err;
3160 struct net_device *dev = info->user_ptr[1];
3161 u8 key_idx = 0;
3162 const u8 *mac_addr = NULL;
3163 bool pairwise;
3164 struct get_key_cookie cookie = {
3165 .error = 0,
3166 };
3167 void *hdr;
3168 struct sk_buff *msg;
3169
3170 if (info->attrs[NL80211_ATTR_KEY_IDX])
3171 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3172
3173 if (key_idx > 5)
3174 return -EINVAL;
3175
3176 if (info->attrs[NL80211_ATTR_MAC])
3177 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3178
3179 pairwise = !!mac_addr;
3180 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3181 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3182
3183 if (kt >= NUM_NL80211_KEYTYPES)
3184 return -EINVAL;
3185 if (kt != NL80211_KEYTYPE_GROUP &&
3186 kt != NL80211_KEYTYPE_PAIRWISE)
3187 return -EINVAL;
3188 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3189 }
3190
3191 if (!rdev->ops->get_key)
3192 return -EOPNOTSUPP;
3193
3194 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3195 return -ENOENT;
3196
3197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3198 if (!msg)
3199 return -ENOMEM;
3200
3201 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3202 NL80211_CMD_NEW_KEY);
3203 if (!hdr)
3204 goto nla_put_failure;
3205
3206 cookie.msg = msg;
3207 cookie.idx = key_idx;
3208
3209 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3210 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3211 goto nla_put_failure;
3212 if (mac_addr &&
3213 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3214 goto nla_put_failure;
3215
3216 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3217 get_key_callback);
3218
3219 if (err)
3220 goto free_msg;
3221
3222 if (cookie.error)
3223 goto nla_put_failure;
3224
3225 genlmsg_end(msg, hdr);
3226 return genlmsg_reply(msg, info);
3227
3228 nla_put_failure:
3229 err = -ENOBUFS;
3230 free_msg:
3231 nlmsg_free(msg);
3232 return err;
3233 }
3234
3235 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3236 {
3237 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3238 struct key_parse key;
3239 int err;
3240 struct net_device *dev = info->user_ptr[1];
3241
3242 err = nl80211_parse_key(info, &key);
3243 if (err)
3244 return err;
3245
3246 if (key.idx < 0)
3247 return -EINVAL;
3248
3249 /* only support setting default key */
3250 if (!key.def && !key.defmgmt)
3251 return -EINVAL;
3252
3253 wdev_lock(dev->ieee80211_ptr);
3254
3255 if (key.def) {
3256 if (!rdev->ops->set_default_key) {
3257 err = -EOPNOTSUPP;
3258 goto out;
3259 }
3260
3261 err = nl80211_key_allowed(dev->ieee80211_ptr);
3262 if (err)
3263 goto out;
3264
3265 err = rdev_set_default_key(rdev, dev, key.idx,
3266 key.def_uni, key.def_multi);
3267
3268 if (err)
3269 goto out;
3270
3271 #ifdef CONFIG_CFG80211_WEXT
3272 dev->ieee80211_ptr->wext.default_key = key.idx;
3273 #endif
3274 } else {
3275 if (key.def_uni || !key.def_multi) {
3276 err = -EINVAL;
3277 goto out;
3278 }
3279
3280 if (!rdev->ops->set_default_mgmt_key) {
3281 err = -EOPNOTSUPP;
3282 goto out;
3283 }
3284
3285 err = nl80211_key_allowed(dev->ieee80211_ptr);
3286 if (err)
3287 goto out;
3288
3289 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3290 if (err)
3291 goto out;
3292
3293 #ifdef CONFIG_CFG80211_WEXT
3294 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3295 #endif
3296 }
3297
3298 out:
3299 wdev_unlock(dev->ieee80211_ptr);
3300
3301 return err;
3302 }
3303
3304 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3305 {
3306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3307 int err;
3308 struct net_device *dev = info->user_ptr[1];
3309 struct key_parse key;
3310 const u8 *mac_addr = NULL;
3311
3312 err = nl80211_parse_key(info, &key);
3313 if (err)
3314 return err;
3315
3316 if (!key.p.key)
3317 return -EINVAL;
3318
3319 if (info->attrs[NL80211_ATTR_MAC])
3320 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3321
3322 if (key.type == -1) {
3323 if (mac_addr)
3324 key.type = NL80211_KEYTYPE_PAIRWISE;
3325 else
3326 key.type = NL80211_KEYTYPE_GROUP;
3327 }
3328
3329 /* for now */
3330 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3331 key.type != NL80211_KEYTYPE_GROUP)
3332 return -EINVAL;
3333
3334 if (!rdev->ops->add_key)
3335 return -EOPNOTSUPP;
3336
3337 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3338 key.type == NL80211_KEYTYPE_PAIRWISE,
3339 mac_addr))
3340 return -EINVAL;
3341
3342 wdev_lock(dev->ieee80211_ptr);
3343 err = nl80211_key_allowed(dev->ieee80211_ptr);
3344 if (!err)
3345 err = rdev_add_key(rdev, dev, key.idx,
3346 key.type == NL80211_KEYTYPE_PAIRWISE,
3347 mac_addr, &key.p);
3348 wdev_unlock(dev->ieee80211_ptr);
3349
3350 return err;
3351 }
3352
3353 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3354 {
3355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3356 int err;
3357 struct net_device *dev = info->user_ptr[1];
3358 u8 *mac_addr = NULL;
3359 struct key_parse key;
3360
3361 err = nl80211_parse_key(info, &key);
3362 if (err)
3363 return err;
3364
3365 if (info->attrs[NL80211_ATTR_MAC])
3366 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3367
3368 if (key.type == -1) {
3369 if (mac_addr)
3370 key.type = NL80211_KEYTYPE_PAIRWISE;
3371 else
3372 key.type = NL80211_KEYTYPE_GROUP;
3373 }
3374
3375 /* for now */
3376 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3377 key.type != NL80211_KEYTYPE_GROUP)
3378 return -EINVAL;
3379
3380 if (!rdev->ops->del_key)
3381 return -EOPNOTSUPP;
3382
3383 wdev_lock(dev->ieee80211_ptr);
3384 err = nl80211_key_allowed(dev->ieee80211_ptr);
3385
3386 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3387 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3388 err = -ENOENT;
3389
3390 if (!err)
3391 err = rdev_del_key(rdev, dev, key.idx,
3392 key.type == NL80211_KEYTYPE_PAIRWISE,
3393 mac_addr);
3394
3395 #ifdef CONFIG_CFG80211_WEXT
3396 if (!err) {
3397 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3398 dev->ieee80211_ptr->wext.default_key = -1;
3399 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3400 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3401 }
3402 #endif
3403 wdev_unlock(dev->ieee80211_ptr);
3404
3405 return err;
3406 }
3407
3408 /* This function returns an error or the number of nested attributes */
3409 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3410 {
3411 struct nlattr *attr;
3412 int n_entries = 0, tmp;
3413
3414 nla_for_each_nested(attr, nl_attr, tmp) {
3415 if (nla_len(attr) != ETH_ALEN)
3416 return -EINVAL;
3417
3418 n_entries++;
3419 }
3420
3421 return n_entries;
3422 }
3423
3424 /*
3425 * This function parses ACL information and allocates memory for ACL data.
3426 * On successful return, the calling function is responsible to free the
3427 * ACL buffer returned by this function.
3428 */
3429 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3430 struct genl_info *info)
3431 {
3432 enum nl80211_acl_policy acl_policy;
3433 struct nlattr *attr;
3434 struct cfg80211_acl_data *acl;
3435 int i = 0, n_entries, tmp;
3436
3437 if (!wiphy->max_acl_mac_addrs)
3438 return ERR_PTR(-EOPNOTSUPP);
3439
3440 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3441 return ERR_PTR(-EINVAL);
3442
3443 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3444 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3445 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3446 return ERR_PTR(-EINVAL);
3447
3448 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3449 return ERR_PTR(-EINVAL);
3450
3451 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3452 if (n_entries < 0)
3453 return ERR_PTR(n_entries);
3454
3455 if (n_entries > wiphy->max_acl_mac_addrs)
3456 return ERR_PTR(-ENOTSUPP);
3457
3458 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3459 GFP_KERNEL);
3460 if (!acl)
3461 return ERR_PTR(-ENOMEM);
3462
3463 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3464 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3465 i++;
3466 }
3467
3468 acl->n_acl_entries = n_entries;
3469 acl->acl_policy = acl_policy;
3470
3471 return acl;
3472 }
3473
3474 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3475 {
3476 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3477 struct net_device *dev = info->user_ptr[1];
3478 struct cfg80211_acl_data *acl;
3479 int err;
3480
3481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3482 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3483 return -EOPNOTSUPP;
3484
3485 if (!dev->ieee80211_ptr->beacon_interval)
3486 return -EINVAL;
3487
3488 acl = parse_acl_data(&rdev->wiphy, info);
3489 if (IS_ERR(acl))
3490 return PTR_ERR(acl);
3491
3492 err = rdev_set_mac_acl(rdev, dev, acl);
3493
3494 kfree(acl);
3495
3496 return err;
3497 }
3498
3499 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3500 u8 *rates, u8 rates_len)
3501 {
3502 u8 i;
3503 u32 mask = 0;
3504
3505 for (i = 0; i < rates_len; i++) {
3506 int rate = (rates[i] & 0x7f) * 5;
3507 int ridx;
3508
3509 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3510 struct ieee80211_rate *srate =
3511 &sband->bitrates[ridx];
3512 if (rate == srate->bitrate) {
3513 mask |= 1 << ridx;
3514 break;
3515 }
3516 }
3517 if (ridx == sband->n_bitrates)
3518 return 0; /* rate not found */
3519 }
3520
3521 return mask;
3522 }
3523
3524 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3525 u8 *rates, u8 rates_len,
3526 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3527 {
3528 u8 i;
3529
3530 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3531
3532 for (i = 0; i < rates_len; i++) {
3533 int ridx, rbit;
3534
3535 ridx = rates[i] / 8;
3536 rbit = BIT(rates[i] % 8);
3537
3538 /* check validity */
3539 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3540 return false;
3541
3542 /* check availability */
3543 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3544 mcs[ridx] |= rbit;
3545 else
3546 return false;
3547 }
3548
3549 return true;
3550 }
3551
3552 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3553 {
3554 u16 mcs_mask = 0;
3555
3556 switch (vht_mcs_map) {
3557 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3558 break;
3559 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3560 mcs_mask = 0x00FF;
3561 break;
3562 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3563 mcs_mask = 0x01FF;
3564 break;
3565 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3566 mcs_mask = 0x03FF;
3567 break;
3568 default:
3569 break;
3570 }
3571
3572 return mcs_mask;
3573 }
3574
3575 static void vht_build_mcs_mask(u16 vht_mcs_map,
3576 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3577 {
3578 u8 nss;
3579
3580 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3581 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3582 vht_mcs_map >>= 2;
3583 }
3584 }
3585
3586 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3587 struct nl80211_txrate_vht *txrate,
3588 u16 mcs[NL80211_VHT_NSS_MAX])
3589 {
3590 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3591 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3592 u8 i;
3593
3594 if (!sband->vht_cap.vht_supported)
3595 return false;
3596
3597 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3598
3599 /* Build vht_mcs_mask from VHT capabilities */
3600 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3601
3602 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3603 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3604 mcs[i] = txrate->mcs[i];
3605 else
3606 return false;
3607 }
3608
3609 return true;
3610 }
3611
3612 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3613 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3614 .len = NL80211_MAX_SUPP_RATES },
3615 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3616 .len = NL80211_MAX_SUPP_HT_RATES },
3617 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3618 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3619 };
3620
3621 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3622 struct cfg80211_bitrate_mask *mask)
3623 {
3624 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3625 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3626 int rem, i;
3627 struct nlattr *tx_rates;
3628 struct ieee80211_supported_band *sband;
3629 u16 vht_tx_mcs_map;
3630
3631 memset(mask, 0, sizeof(*mask));
3632 /* Default to all rates enabled */
3633 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3634 sband = rdev->wiphy.bands[i];
3635
3636 if (!sband)
3637 continue;
3638
3639 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3640 memcpy(mask->control[i].ht_mcs,
3641 sband->ht_cap.mcs.rx_mask,
3642 sizeof(mask->control[i].ht_mcs));
3643
3644 if (!sband->vht_cap.vht_supported)
3645 continue;
3646
3647 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3648 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3649 }
3650
3651 /* if no rates are given set it back to the defaults */
3652 if (!info->attrs[NL80211_ATTR_TX_RATES])
3653 goto out;
3654
3655 /* The nested attribute uses enum nl80211_band as the index. This maps
3656 * directly to the enum nl80211_band values used in cfg80211.
3657 */
3658 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3659 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3660 enum nl80211_band band = nla_type(tx_rates);
3661 int err;
3662
3663 if (band < 0 || band >= NUM_NL80211_BANDS)
3664 return -EINVAL;
3665 sband = rdev->wiphy.bands[band];
3666 if (sband == NULL)
3667 return -EINVAL;
3668 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3669 nl80211_txattr_policy, info->extack);
3670 if (err)
3671 return err;
3672 if (tb[NL80211_TXRATE_LEGACY]) {
3673 mask->control[band].legacy = rateset_to_mask(
3674 sband,
3675 nla_data(tb[NL80211_TXRATE_LEGACY]),
3676 nla_len(tb[NL80211_TXRATE_LEGACY]));
3677 if ((mask->control[band].legacy == 0) &&
3678 nla_len(tb[NL80211_TXRATE_LEGACY]))
3679 return -EINVAL;
3680 }
3681 if (tb[NL80211_TXRATE_HT]) {
3682 if (!ht_rateset_to_mask(
3683 sband,
3684 nla_data(tb[NL80211_TXRATE_HT]),
3685 nla_len(tb[NL80211_TXRATE_HT]),
3686 mask->control[band].ht_mcs))
3687 return -EINVAL;
3688 }
3689 if (tb[NL80211_TXRATE_VHT]) {
3690 if (!vht_set_mcs_mask(
3691 sband,
3692 nla_data(tb[NL80211_TXRATE_VHT]),
3693 mask->control[band].vht_mcs))
3694 return -EINVAL;
3695 }
3696 if (tb[NL80211_TXRATE_GI]) {
3697 mask->control[band].gi =
3698 nla_get_u8(tb[NL80211_TXRATE_GI]);
3699 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3700 return -EINVAL;
3701 }
3702
3703 if (mask->control[band].legacy == 0) {
3704 /* don't allow empty legacy rates if HT or VHT
3705 * are not even supported.
3706 */
3707 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3708 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3709 return -EINVAL;
3710
3711 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3712 if (mask->control[band].ht_mcs[i])
3713 goto out;
3714
3715 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3716 if (mask->control[band].vht_mcs[i])
3717 goto out;
3718
3719 /* legacy and mcs rates may not be both empty */
3720 return -EINVAL;
3721 }
3722 }
3723
3724 out:
3725 return 0;
3726 }
3727
3728 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3729 enum nl80211_band band,
3730 struct cfg80211_bitrate_mask *beacon_rate)
3731 {
3732 u32 count_ht, count_vht, i;
3733 u32 rate = beacon_rate->control[band].legacy;
3734
3735 /* Allow only one rate */
3736 if (hweight32(rate) > 1)
3737 return -EINVAL;
3738
3739 count_ht = 0;
3740 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3741 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3742 return -EINVAL;
3743 } else if (beacon_rate->control[band].ht_mcs[i]) {
3744 count_ht++;
3745 if (count_ht > 1)
3746 return -EINVAL;
3747 }
3748 if (count_ht && rate)
3749 return -EINVAL;
3750 }
3751
3752 count_vht = 0;
3753 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3754 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3755 return -EINVAL;
3756 } else if (beacon_rate->control[band].vht_mcs[i]) {
3757 count_vht++;
3758 if (count_vht > 1)
3759 return -EINVAL;
3760 }
3761 if (count_vht && rate)
3762 return -EINVAL;
3763 }
3764
3765 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3766 return -EINVAL;
3767
3768 if (rate &&
3769 !wiphy_ext_feature_isset(&rdev->wiphy,
3770 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3771 return -EINVAL;
3772 if (count_ht &&
3773 !wiphy_ext_feature_isset(&rdev->wiphy,
3774 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3775 return -EINVAL;
3776 if (count_vht &&
3777 !wiphy_ext_feature_isset(&rdev->wiphy,
3778 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3779 return -EINVAL;
3780
3781 return 0;
3782 }
3783
3784 static int nl80211_parse_beacon(struct nlattr *attrs[],
3785 struct cfg80211_beacon_data *bcn)
3786 {
3787 bool haveinfo = false;
3788
3789 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3790 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3791 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3792 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3793 return -EINVAL;
3794
3795 memset(bcn, 0, sizeof(*bcn));
3796
3797 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3798 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3799 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3800 if (!bcn->head_len)
3801 return -EINVAL;
3802 haveinfo = true;
3803 }
3804
3805 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3806 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3807 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3808 haveinfo = true;
3809 }
3810
3811 if (!haveinfo)
3812 return -EINVAL;
3813
3814 if (attrs[NL80211_ATTR_IE]) {
3815 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3816 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3817 }
3818
3819 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3820 bcn->proberesp_ies =
3821 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3822 bcn->proberesp_ies_len =
3823 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3824 }
3825
3826 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3827 bcn->assocresp_ies =
3828 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3829 bcn->assocresp_ies_len =
3830 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3831 }
3832
3833 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3834 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3835 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3836 }
3837
3838 return 0;
3839 }
3840
3841 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3842 const u8 *rates)
3843 {
3844 int i;
3845
3846 if (!rates)
3847 return;
3848
3849 for (i = 0; i < rates[1]; i++) {
3850 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3851 params->ht_required = true;
3852 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3853 params->vht_required = true;
3854 }
3855 }
3856
3857 /*
3858 * Since the nl80211 API didn't include, from the beginning, attributes about
3859 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3860 * benefit of drivers that rebuild IEs in the firmware.
3861 */
3862 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3863 {
3864 const struct cfg80211_beacon_data *bcn = &params->beacon;
3865 size_t ies_len = bcn->tail_len;
3866 const u8 *ies = bcn->tail;
3867 const u8 *rates;
3868 const u8 *cap;
3869
3870 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3871 nl80211_check_ap_rate_selectors(params, rates);
3872
3873 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3874 nl80211_check_ap_rate_selectors(params, rates);
3875
3876 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3877 if (cap && cap[1] >= sizeof(*params->ht_cap))
3878 params->ht_cap = (void *)(cap + 2);
3879 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3880 if (cap && cap[1] >= sizeof(*params->vht_cap))
3881 params->vht_cap = (void *)(cap + 2);
3882 }
3883
3884 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3885 struct cfg80211_ap_settings *params)
3886 {
3887 struct wireless_dev *wdev;
3888 bool ret = false;
3889
3890 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3891 if (wdev->iftype != NL80211_IFTYPE_AP &&
3892 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3893 continue;
3894
3895 if (!wdev->preset_chandef.chan)
3896 continue;
3897
3898 params->chandef = wdev->preset_chandef;
3899 ret = true;
3900 break;
3901 }
3902
3903 return ret;
3904 }
3905
3906 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3907 enum nl80211_auth_type auth_type,
3908 enum nl80211_commands cmd)
3909 {
3910 if (auth_type > NL80211_AUTHTYPE_MAX)
3911 return false;
3912
3913 switch (cmd) {
3914 case NL80211_CMD_AUTHENTICATE:
3915 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3916 auth_type == NL80211_AUTHTYPE_SAE)
3917 return false;
3918 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3919 NL80211_EXT_FEATURE_FILS_STA) &&
3920 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3921 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3922 auth_type == NL80211_AUTHTYPE_FILS_PK))
3923 return false;
3924 return true;
3925 case NL80211_CMD_CONNECT:
3926 /* SAE not supported yet */
3927 if (auth_type == NL80211_AUTHTYPE_SAE)
3928 return false;
3929 /* FILS with SK PFS or PK not supported yet */
3930 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3931 auth_type == NL80211_AUTHTYPE_FILS_PK)
3932 return false;
3933 if (!wiphy_ext_feature_isset(
3934 &rdev->wiphy,
3935 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3936 auth_type == NL80211_AUTHTYPE_FILS_SK)
3937 return false;
3938 return true;
3939 case NL80211_CMD_START_AP:
3940 /* SAE not supported yet */
3941 if (auth_type == NL80211_AUTHTYPE_SAE)
3942 return false;
3943 /* FILS not supported yet */
3944 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3945 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3946 auth_type == NL80211_AUTHTYPE_FILS_PK)
3947 return false;
3948 return true;
3949 default:
3950 return false;
3951 }
3952 }
3953
3954 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3955 {
3956 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3957 struct net_device *dev = info->user_ptr[1];
3958 struct wireless_dev *wdev = dev->ieee80211_ptr;
3959 struct cfg80211_ap_settings params;
3960 int err;
3961
3962 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3963 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3964 return -EOPNOTSUPP;
3965
3966 if (!rdev->ops->start_ap)
3967 return -EOPNOTSUPP;
3968
3969 if (wdev->beacon_interval)
3970 return -EALREADY;
3971
3972 memset(&params, 0, sizeof(params));
3973
3974 /* these are required for START_AP */
3975 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3976 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3977 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3978 return -EINVAL;
3979
3980 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3981 if (err)
3982 return err;
3983
3984 params.beacon_interval =
3985 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3986 params.dtim_period =
3987 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3988
3989 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3990 params.beacon_interval);
3991 if (err)
3992 return err;
3993
3994 /*
3995 * In theory, some of these attributes should be required here
3996 * but since they were not used when the command was originally
3997 * added, keep them optional for old user space programs to let
3998 * them continue to work with drivers that do not need the
3999 * additional information -- drivers must check!
4000 */
4001 if (info->attrs[NL80211_ATTR_SSID]) {
4002 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4003 params.ssid_len =
4004 nla_len(info->attrs[NL80211_ATTR_SSID]);
4005 if (params.ssid_len == 0 ||
4006 params.ssid_len > IEEE80211_MAX_SSID_LEN)
4007 return -EINVAL;
4008 }
4009
4010 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
4011 params.hidden_ssid = nla_get_u32(
4012 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4013 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
4014 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
4015 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
4016 return -EINVAL;
4017 }
4018
4019 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4020
4021 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4022 params.auth_type = nla_get_u32(
4023 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4024 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4025 NL80211_CMD_START_AP))
4026 return -EINVAL;
4027 } else
4028 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4029
4030 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4031 NL80211_MAX_NR_CIPHER_SUITES);
4032 if (err)
4033 return err;
4034
4035 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4036 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4037 return -EOPNOTSUPP;
4038 params.inactivity_timeout = nla_get_u16(
4039 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4040 }
4041
4042 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4043 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4044 return -EINVAL;
4045 params.p2p_ctwindow =
4046 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4047 if (params.p2p_ctwindow > 127)
4048 return -EINVAL;
4049 if (params.p2p_ctwindow != 0 &&
4050 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4051 return -EINVAL;
4052 }
4053
4054 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4055 u8 tmp;
4056
4057 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4058 return -EINVAL;
4059 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4060 if (tmp > 1)
4061 return -EINVAL;
4062 params.p2p_opp_ps = tmp;
4063 if (params.p2p_opp_ps != 0 &&
4064 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4065 return -EINVAL;
4066 }
4067
4068 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4069 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4070 if (err)
4071 return err;
4072 } else if (wdev->preset_chandef.chan) {
4073 params.chandef = wdev->preset_chandef;
4074 } else if (!nl80211_get_ap_channel(rdev, &params))
4075 return -EINVAL;
4076
4077 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4078 wdev->iftype))
4079 return -EINVAL;
4080
4081 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4082 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4083 if (err)
4084 return err;
4085
4086 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4087 &params.beacon_rate);
4088 if (err)
4089 return err;
4090 }
4091
4092 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4093 params.smps_mode =
4094 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4095 switch (params.smps_mode) {
4096 case NL80211_SMPS_OFF:
4097 break;
4098 case NL80211_SMPS_STATIC:
4099 if (!(rdev->wiphy.features &
4100 NL80211_FEATURE_STATIC_SMPS))
4101 return -EINVAL;
4102 break;
4103 case NL80211_SMPS_DYNAMIC:
4104 if (!(rdev->wiphy.features &
4105 NL80211_FEATURE_DYNAMIC_SMPS))
4106 return -EINVAL;
4107 break;
4108 default:
4109 return -EINVAL;
4110 }
4111 } else {
4112 params.smps_mode = NL80211_SMPS_OFF;
4113 }
4114
4115 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4116 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4117 return -EOPNOTSUPP;
4118
4119 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4120 params.acl = parse_acl_data(&rdev->wiphy, info);
4121 if (IS_ERR(params.acl))
4122 return PTR_ERR(params.acl);
4123 }
4124
4125 nl80211_calculate_ap_params(&params);
4126
4127 wdev_lock(wdev);
4128 err = rdev_start_ap(rdev, dev, &params);
4129 if (!err) {
4130 wdev->preset_chandef = params.chandef;
4131 wdev->beacon_interval = params.beacon_interval;
4132 wdev->chandef = params.chandef;
4133 wdev->ssid_len = params.ssid_len;
4134 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4135 }
4136 wdev_unlock(wdev);
4137
4138 kfree(params.acl);
4139
4140 return err;
4141 }
4142
4143 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4144 {
4145 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4146 struct net_device *dev = info->user_ptr[1];
4147 struct wireless_dev *wdev = dev->ieee80211_ptr;
4148 struct cfg80211_beacon_data params;
4149 int err;
4150
4151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4153 return -EOPNOTSUPP;
4154
4155 if (!rdev->ops->change_beacon)
4156 return -EOPNOTSUPP;
4157
4158 if (!wdev->beacon_interval)
4159 return -EINVAL;
4160
4161 err = nl80211_parse_beacon(info->attrs, &params);
4162 if (err)
4163 return err;
4164
4165 wdev_lock(wdev);
4166 err = rdev_change_beacon(rdev, dev, &params);
4167 wdev_unlock(wdev);
4168
4169 return err;
4170 }
4171
4172 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4173 {
4174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4175 struct net_device *dev = info->user_ptr[1];
4176
4177 return cfg80211_stop_ap(rdev, dev, false);
4178 }
4179
4180 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4181 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4182 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4183 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4184 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4185 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4186 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4187 };
4188
4189 static int parse_station_flags(struct genl_info *info,
4190 enum nl80211_iftype iftype,
4191 struct station_parameters *params)
4192 {
4193 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4194 struct nlattr *nla;
4195 int flag;
4196
4197 /*
4198 * Try parsing the new attribute first so userspace
4199 * can specify both for older kernels.
4200 */
4201 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4202 if (nla) {
4203 struct nl80211_sta_flag_update *sta_flags;
4204
4205 sta_flags = nla_data(nla);
4206 params->sta_flags_mask = sta_flags->mask;
4207 params->sta_flags_set = sta_flags->set;
4208 params->sta_flags_set &= params->sta_flags_mask;
4209 if ((params->sta_flags_mask |
4210 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4211 return -EINVAL;
4212 return 0;
4213 }
4214
4215 /* if present, parse the old attribute */
4216
4217 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4218 if (!nla)
4219 return 0;
4220
4221 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4222 sta_flags_policy, info->extack))
4223 return -EINVAL;
4224
4225 /*
4226 * Only allow certain flags for interface types so that
4227 * other attributes are silently ignored. Remember that
4228 * this is backward compatibility code with old userspace
4229 * and shouldn't be hit in other cases anyway.
4230 */
4231 switch (iftype) {
4232 case NL80211_IFTYPE_AP:
4233 case NL80211_IFTYPE_AP_VLAN:
4234 case NL80211_IFTYPE_P2P_GO:
4235 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4236 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4237 BIT(NL80211_STA_FLAG_WME) |
4238 BIT(NL80211_STA_FLAG_MFP);
4239 break;
4240 case NL80211_IFTYPE_P2P_CLIENT:
4241 case NL80211_IFTYPE_STATION:
4242 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4243 BIT(NL80211_STA_FLAG_TDLS_PEER);
4244 break;
4245 case NL80211_IFTYPE_MESH_POINT:
4246 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4247 BIT(NL80211_STA_FLAG_MFP) |
4248 BIT(NL80211_STA_FLAG_AUTHORIZED);
4249 default:
4250 return -EINVAL;
4251 }
4252
4253 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4254 if (flags[flag]) {
4255 params->sta_flags_set |= (1<<flag);
4256
4257 /* no longer support new API additions in old API */
4258 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4259 return -EINVAL;
4260 }
4261 }
4262
4263 return 0;
4264 }
4265
4266 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4267 int attr)
4268 {
4269 struct nlattr *rate;
4270 u32 bitrate;
4271 u16 bitrate_compat;
4272 enum nl80211_rate_info rate_flg;
4273
4274 rate = nla_nest_start(msg, attr);
4275 if (!rate)
4276 return false;
4277
4278 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4279 bitrate = cfg80211_calculate_bitrate(info);
4280 /* report 16-bit bitrate only if we can */
4281 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4282 if (bitrate > 0 &&
4283 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4284 return false;
4285 if (bitrate_compat > 0 &&
4286 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4287 return false;
4288
4289 switch (info->bw) {
4290 case RATE_INFO_BW_5:
4291 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4292 break;
4293 case RATE_INFO_BW_10:
4294 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4295 break;
4296 default:
4297 WARN_ON(1);
4298 /* fall through */
4299 case RATE_INFO_BW_20:
4300 rate_flg = 0;
4301 break;
4302 case RATE_INFO_BW_40:
4303 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4304 break;
4305 case RATE_INFO_BW_80:
4306 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4307 break;
4308 case RATE_INFO_BW_160:
4309 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4310 break;
4311 }
4312
4313 if (rate_flg && nla_put_flag(msg, rate_flg))
4314 return false;
4315
4316 if (info->flags & RATE_INFO_FLAGS_MCS) {
4317 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4318 return false;
4319 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4320 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4321 return false;
4322 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4323 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4324 return false;
4325 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4326 return false;
4327 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4328 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4329 return false;
4330 }
4331
4332 nla_nest_end(msg, rate);
4333 return true;
4334 }
4335
4336 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4337 int id)
4338 {
4339 void *attr;
4340 int i = 0;
4341
4342 if (!mask)
4343 return true;
4344
4345 attr = nla_nest_start(msg, id);
4346 if (!attr)
4347 return false;
4348
4349 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4350 if (!(mask & BIT(i)))
4351 continue;
4352
4353 if (nla_put_u8(msg, i, signal[i]))
4354 return false;
4355 }
4356
4357 nla_nest_end(msg, attr);
4358
4359 return true;
4360 }
4361
4362 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4363 u32 seq, int flags,
4364 struct cfg80211_registered_device *rdev,
4365 struct net_device *dev,
4366 const u8 *mac_addr, struct station_info *sinfo)
4367 {
4368 void *hdr;
4369 struct nlattr *sinfoattr, *bss_param;
4370
4371 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4372 if (!hdr)
4373 return -1;
4374
4375 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4376 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4377 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4378 goto nla_put_failure;
4379
4380 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4381 if (!sinfoattr)
4382 goto nla_put_failure;
4383
4384 #define PUT_SINFO(attr, memb, type) do { \
4385 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4386 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4387 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4388 sinfo->memb)) \
4389 goto nla_put_failure; \
4390 } while (0)
4391 #define PUT_SINFO_U64(attr, memb) do { \
4392 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4393 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4394 sinfo->memb, NL80211_STA_INFO_PAD)) \
4395 goto nla_put_failure; \
4396 } while (0)
4397
4398 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4399 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4400
4401 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4402 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4403 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4404 (u32)sinfo->rx_bytes))
4405 goto nla_put_failure;
4406
4407 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4408 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4409 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4410 (u32)sinfo->tx_bytes))
4411 goto nla_put_failure;
4412
4413 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4414 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4415 PUT_SINFO(LLID, llid, u16);
4416 PUT_SINFO(PLID, plid, u16);
4417 PUT_SINFO(PLINK_STATE, plink_state, u8);
4418 PUT_SINFO_U64(RX_DURATION, rx_duration);
4419
4420 switch (rdev->wiphy.signal_type) {
4421 case CFG80211_SIGNAL_TYPE_MBM:
4422 PUT_SINFO(SIGNAL, signal, u8);
4423 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4424 break;
4425 default:
4426 break;
4427 }
4428 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4429 if (!nl80211_put_signal(msg, sinfo->chains,
4430 sinfo->chain_signal,
4431 NL80211_STA_INFO_CHAIN_SIGNAL))
4432 goto nla_put_failure;
4433 }
4434 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4435 if (!nl80211_put_signal(msg, sinfo->chains,
4436 sinfo->chain_signal_avg,
4437 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4438 goto nla_put_failure;
4439 }
4440 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4441 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4442 NL80211_STA_INFO_TX_BITRATE))
4443 goto nla_put_failure;
4444 }
4445 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4446 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4447 NL80211_STA_INFO_RX_BITRATE))
4448 goto nla_put_failure;
4449 }
4450
4451 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4452 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4453 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4454 PUT_SINFO(TX_FAILED, tx_failed, u32);
4455 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4456 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4457 PUT_SINFO(LOCAL_PM, local_pm, u32);
4458 PUT_SINFO(PEER_PM, peer_pm, u32);
4459 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4460
4461 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4462 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4463 if (!bss_param)
4464 goto nla_put_failure;
4465
4466 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4467 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4468 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4469 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4470 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4471 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4472 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4473 sinfo->bss_param.dtim_period) ||
4474 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4475 sinfo->bss_param.beacon_interval))
4476 goto nla_put_failure;
4477
4478 nla_nest_end(msg, bss_param);
4479 }
4480 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4481 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4482 sizeof(struct nl80211_sta_flag_update),
4483 &sinfo->sta_flags))
4484 goto nla_put_failure;
4485
4486 PUT_SINFO_U64(T_OFFSET, t_offset);
4487 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4488 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4489 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4490
4491 #undef PUT_SINFO
4492 #undef PUT_SINFO_U64
4493
4494 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4495 struct nlattr *tidsattr;
4496 int tid;
4497
4498 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4499 if (!tidsattr)
4500 goto nla_put_failure;
4501
4502 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4503 struct cfg80211_tid_stats *tidstats;
4504 struct nlattr *tidattr;
4505
4506 tidstats = &sinfo->pertid[tid];
4507
4508 if (!tidstats->filled)
4509 continue;
4510
4511 tidattr = nla_nest_start(msg, tid + 1);
4512 if (!tidattr)
4513 goto nla_put_failure;
4514
4515 #define PUT_TIDVAL_U64(attr, memb) do { \
4516 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4517 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4518 tidstats->memb, NL80211_TID_STATS_PAD)) \
4519 goto nla_put_failure; \
4520 } while (0)
4521
4522 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4523 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4524 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4525 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4526
4527 #undef PUT_TIDVAL_U64
4528 nla_nest_end(msg, tidattr);
4529 }
4530
4531 nla_nest_end(msg, tidsattr);
4532 }
4533
4534 nla_nest_end(msg, sinfoattr);
4535
4536 if (sinfo->assoc_req_ies_len &&
4537 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4538 sinfo->assoc_req_ies))
4539 goto nla_put_failure;
4540
4541 genlmsg_end(msg, hdr);
4542 return 0;
4543
4544 nla_put_failure:
4545 genlmsg_cancel(msg, hdr);
4546 return -EMSGSIZE;
4547 }
4548
4549 static int nl80211_dump_station(struct sk_buff *skb,
4550 struct netlink_callback *cb)
4551 {
4552 struct station_info sinfo;
4553 struct cfg80211_registered_device *rdev;
4554 struct wireless_dev *wdev;
4555 u8 mac_addr[ETH_ALEN];
4556 int sta_idx = cb->args[2];
4557 int err;
4558
4559 rtnl_lock();
4560 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4561 if (err)
4562 goto out_err;
4563
4564 if (!wdev->netdev) {
4565 err = -EINVAL;
4566 goto out_err;
4567 }
4568
4569 if (!rdev->ops->dump_station) {
4570 err = -EOPNOTSUPP;
4571 goto out_err;
4572 }
4573
4574 while (1) {
4575 memset(&sinfo, 0, sizeof(sinfo));
4576 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4577 mac_addr, &sinfo);
4578 if (err == -ENOENT)
4579 break;
4580 if (err)
4581 goto out_err;
4582
4583 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4584 NETLINK_CB(cb->skb).portid,
4585 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4586 rdev, wdev->netdev, mac_addr,
4587 &sinfo) < 0)
4588 goto out;
4589
4590 sta_idx++;
4591 }
4592
4593 out:
4594 cb->args[2] = sta_idx;
4595 err = skb->len;
4596 out_err:
4597 rtnl_unlock();
4598
4599 return err;
4600 }
4601
4602 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4603 {
4604 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4605 struct net_device *dev = info->user_ptr[1];
4606 struct station_info sinfo;
4607 struct sk_buff *msg;
4608 u8 *mac_addr = NULL;
4609 int err;
4610
4611 memset(&sinfo, 0, sizeof(sinfo));
4612
4613 if (!info->attrs[NL80211_ATTR_MAC])
4614 return -EINVAL;
4615
4616 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4617
4618 if (!rdev->ops->get_station)
4619 return -EOPNOTSUPP;
4620
4621 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4622 if (err)
4623 return err;
4624
4625 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4626 if (!msg)
4627 return -ENOMEM;
4628
4629 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4630 info->snd_portid, info->snd_seq, 0,
4631 rdev, dev, mac_addr, &sinfo) < 0) {
4632 nlmsg_free(msg);
4633 return -ENOBUFS;
4634 }
4635
4636 return genlmsg_reply(msg, info);
4637 }
4638
4639 int cfg80211_check_station_change(struct wiphy *wiphy,
4640 struct station_parameters *params,
4641 enum cfg80211_station_type statype)
4642 {
4643 if (params->listen_interval != -1 &&
4644 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4645 return -EINVAL;
4646
4647 if (params->support_p2p_ps != -1 &&
4648 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4649 return -EINVAL;
4650
4651 if (params->aid &&
4652 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4653 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4654 return -EINVAL;
4655
4656 /* When you run into this, adjust the code below for the new flag */
4657 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4658
4659 switch (statype) {
4660 case CFG80211_STA_MESH_PEER_KERNEL:
4661 case CFG80211_STA_MESH_PEER_USER:
4662 /*
4663 * No ignoring the TDLS flag here -- the userspace mesh
4664 * code doesn't have the bug of including TDLS in the
4665 * mask everywhere.
4666 */
4667 if (params->sta_flags_mask &
4668 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4669 BIT(NL80211_STA_FLAG_MFP) |
4670 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4671 return -EINVAL;
4672 break;
4673 case CFG80211_STA_TDLS_PEER_SETUP:
4674 case CFG80211_STA_TDLS_PEER_ACTIVE:
4675 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4676 return -EINVAL;
4677 /* ignore since it can't change */
4678 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4679 break;
4680 default:
4681 /* disallow mesh-specific things */
4682 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4683 return -EINVAL;
4684 if (params->local_pm)
4685 return -EINVAL;
4686 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4687 return -EINVAL;
4688 }
4689
4690 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4691 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4692 /* TDLS can't be set, ... */
4693 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4694 return -EINVAL;
4695 /*
4696 * ... but don't bother the driver with it. This works around
4697 * a hostapd/wpa_supplicant issue -- it always includes the
4698 * TLDS_PEER flag in the mask even for AP mode.
4699 */
4700 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4701 }
4702
4703 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4704 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4705 /* reject other things that can't change */
4706 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4707 return -EINVAL;
4708 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4709 return -EINVAL;
4710 if (params->supported_rates)
4711 return -EINVAL;
4712 if (params->ext_capab || params->ht_capa || params->vht_capa)
4713 return -EINVAL;
4714 }
4715
4716 if (statype != CFG80211_STA_AP_CLIENT &&
4717 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4718 if (params->vlan)
4719 return -EINVAL;
4720 }
4721
4722 switch (statype) {
4723 case CFG80211_STA_AP_MLME_CLIENT:
4724 /* Use this only for authorizing/unauthorizing a station */
4725 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4726 return -EOPNOTSUPP;
4727 break;
4728 case CFG80211_STA_AP_CLIENT:
4729 case CFG80211_STA_AP_CLIENT_UNASSOC:
4730 /* accept only the listed bits */
4731 if (params->sta_flags_mask &
4732 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4733 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4734 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4735 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4736 BIT(NL80211_STA_FLAG_WME) |
4737 BIT(NL80211_STA_FLAG_MFP)))
4738 return -EINVAL;
4739
4740 /* but authenticated/associated only if driver handles it */
4741 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4742 params->sta_flags_mask &
4743 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4744 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4745 return -EINVAL;
4746 break;
4747 case CFG80211_STA_IBSS:
4748 case CFG80211_STA_AP_STA:
4749 /* reject any changes other than AUTHORIZED */
4750 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4751 return -EINVAL;
4752 break;
4753 case CFG80211_STA_TDLS_PEER_SETUP:
4754 /* reject any changes other than AUTHORIZED or WME */
4755 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4756 BIT(NL80211_STA_FLAG_WME)))
4757 return -EINVAL;
4758 /* force (at least) rates when authorizing */
4759 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4760 !params->supported_rates)
4761 return -EINVAL;
4762 break;
4763 case CFG80211_STA_TDLS_PEER_ACTIVE:
4764 /* reject any changes */
4765 return -EINVAL;
4766 case CFG80211_STA_MESH_PEER_KERNEL:
4767 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4768 return -EINVAL;
4769 break;
4770 case CFG80211_STA_MESH_PEER_USER:
4771 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4772 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4773 return -EINVAL;
4774 break;
4775 }
4776
4777 /*
4778 * Older kernel versions ignored this attribute entirely, so don't
4779 * reject attempts to update it but mark it as unused instead so the
4780 * driver won't look at the data.
4781 */
4782 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4783 statype != CFG80211_STA_TDLS_PEER_SETUP)
4784 params->opmode_notif_used = false;
4785
4786 return 0;
4787 }
4788 EXPORT_SYMBOL(cfg80211_check_station_change);
4789
4790 /*
4791 * Get vlan interface making sure it is running and on the right wiphy.
4792 */
4793 static struct net_device *get_vlan(struct genl_info *info,
4794 struct cfg80211_registered_device *rdev)
4795 {
4796 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4797 struct net_device *v;
4798 int ret;
4799
4800 if (!vlanattr)
4801 return NULL;
4802
4803 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4804 if (!v)
4805 return ERR_PTR(-ENODEV);
4806
4807 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4808 ret = -EINVAL;
4809 goto error;
4810 }
4811
4812 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4813 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4814 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4815 ret = -EINVAL;
4816 goto error;
4817 }
4818
4819 if (!netif_running(v)) {
4820 ret = -ENETDOWN;
4821 goto error;
4822 }
4823
4824 return v;
4825 error:
4826 dev_put(v);
4827 return ERR_PTR(ret);
4828 }
4829
4830 static const struct nla_policy
4831 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4832 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4833 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4834 };
4835
4836 static int nl80211_parse_sta_wme(struct genl_info *info,
4837 struct station_parameters *params)
4838 {
4839 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4840 struct nlattr *nla;
4841 int err;
4842
4843 /* parse WME attributes if present */
4844 if (!info->attrs[NL80211_ATTR_STA_WME])
4845 return 0;
4846
4847 nla = info->attrs[NL80211_ATTR_STA_WME];
4848 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4849 nl80211_sta_wme_policy, info->extack);
4850 if (err)
4851 return err;
4852
4853 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4854 params->uapsd_queues = nla_get_u8(
4855 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4856 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4857 return -EINVAL;
4858
4859 if (tb[NL80211_STA_WME_MAX_SP])
4860 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4861
4862 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4863 return -EINVAL;
4864
4865 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4866
4867 return 0;
4868 }
4869
4870 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4871 struct station_parameters *params)
4872 {
4873 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4874 params->supported_channels =
4875 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4876 params->supported_channels_len =
4877 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4878 /*
4879 * Need to include at least one (first channel, number of
4880 * channels) tuple for each subband, and must have proper
4881 * tuples for the rest of the data as well.
4882 */
4883 if (params->supported_channels_len < 2)
4884 return -EINVAL;
4885 if (params->supported_channels_len % 2)
4886 return -EINVAL;
4887 }
4888
4889 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4890 params->supported_oper_classes =
4891 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4892 params->supported_oper_classes_len =
4893 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4894 /*
4895 * The value of the Length field of the Supported Operating
4896 * Classes element is between 2 and 253.
4897 */
4898 if (params->supported_oper_classes_len < 2 ||
4899 params->supported_oper_classes_len > 253)
4900 return -EINVAL;
4901 }
4902 return 0;
4903 }
4904
4905 static int nl80211_set_station_tdls(struct genl_info *info,
4906 struct station_parameters *params)
4907 {
4908 int err;
4909 /* Dummy STA entry gets updated once the peer capabilities are known */
4910 if (info->attrs[NL80211_ATTR_PEER_AID])
4911 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4912 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4913 params->ht_capa =
4914 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4915 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4916 params->vht_capa =
4917 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4918
4919 err = nl80211_parse_sta_channel_info(info, params);
4920 if (err)
4921 return err;
4922
4923 return nl80211_parse_sta_wme(info, params);
4924 }
4925
4926 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4927 {
4928 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4929 struct net_device *dev = info->user_ptr[1];
4930 struct station_parameters params;
4931 u8 *mac_addr;
4932 int err;
4933
4934 memset(&params, 0, sizeof(params));
4935
4936 if (!rdev->ops->change_station)
4937 return -EOPNOTSUPP;
4938
4939 /*
4940 * AID and listen_interval properties can be set only for unassociated
4941 * station. Include these parameters here and will check them in
4942 * cfg80211_check_station_change().
4943 */
4944 if (info->attrs[NL80211_ATTR_STA_AID])
4945 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4946
4947 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4948 params.listen_interval =
4949 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4950 else
4951 params.listen_interval = -1;
4952
4953 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4954 u8 tmp;
4955
4956 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4957 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4958 return -EINVAL;
4959
4960 params.support_p2p_ps = tmp;
4961 } else {
4962 params.support_p2p_ps = -1;
4963 }
4964
4965 if (!info->attrs[NL80211_ATTR_MAC])
4966 return -EINVAL;
4967
4968 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4969
4970 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4971 params.supported_rates =
4972 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4973 params.supported_rates_len =
4974 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4975 }
4976
4977 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4978 params.capability =
4979 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4980 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4981 }
4982
4983 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4984 params.ext_capab =
4985 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4986 params.ext_capab_len =
4987 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4988 }
4989
4990 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4991 return -EINVAL;
4992
4993 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4994 params.plink_action =
4995 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4996 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4997 return -EINVAL;
4998 }
4999
5000 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5001 params.plink_state =
5002 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5003 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
5004 return -EINVAL;
5005 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
5006 params.peer_aid = nla_get_u16(
5007 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5008 if (params.peer_aid > IEEE80211_MAX_AID)
5009 return -EINVAL;
5010 }
5011 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5012 }
5013
5014 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
5015 enum nl80211_mesh_power_mode pm = nla_get_u32(
5016 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5017
5018 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
5019 pm > NL80211_MESH_POWER_MAX)
5020 return -EINVAL;
5021
5022 params.local_pm = pm;
5023 }
5024
5025 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5026 params.opmode_notif_used = true;
5027 params.opmode_notif =
5028 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5029 }
5030
5031 /* Include parameters for TDLS peer (will check later) */
5032 err = nl80211_set_station_tdls(info, &params);
5033 if (err)
5034 return err;
5035
5036 params.vlan = get_vlan(info, rdev);
5037 if (IS_ERR(params.vlan))
5038 return PTR_ERR(params.vlan);
5039
5040 switch (dev->ieee80211_ptr->iftype) {
5041 case NL80211_IFTYPE_AP:
5042 case NL80211_IFTYPE_AP_VLAN:
5043 case NL80211_IFTYPE_P2P_GO:
5044 case NL80211_IFTYPE_P2P_CLIENT:
5045 case NL80211_IFTYPE_STATION:
5046 case NL80211_IFTYPE_ADHOC:
5047 case NL80211_IFTYPE_MESH_POINT:
5048 break;
5049 default:
5050 err = -EOPNOTSUPP;
5051 goto out_put_vlan;
5052 }
5053
5054 /* driver will call cfg80211_check_station_change() */
5055 err = rdev_change_station(rdev, dev, mac_addr, &params);
5056
5057 out_put_vlan:
5058 if (params.vlan)
5059 dev_put(params.vlan);
5060
5061 return err;
5062 }
5063
5064 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5065 {
5066 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5067 int err;
5068 struct net_device *dev = info->user_ptr[1];
5069 struct station_parameters params;
5070 u8 *mac_addr = NULL;
5071 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5072 BIT(NL80211_STA_FLAG_ASSOCIATED);
5073
5074 memset(&params, 0, sizeof(params));
5075
5076 if (!rdev->ops->add_station)
5077 return -EOPNOTSUPP;
5078
5079 if (!info->attrs[NL80211_ATTR_MAC])
5080 return -EINVAL;
5081
5082 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5083 return -EINVAL;
5084
5085 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5086 return -EINVAL;
5087
5088 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5089 !info->attrs[NL80211_ATTR_PEER_AID])
5090 return -EINVAL;
5091
5092 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5093 params.supported_rates =
5094 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5095 params.supported_rates_len =
5096 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5097 params.listen_interval =
5098 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5099
5100 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5101 u8 tmp;
5102
5103 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5104 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5105 return -EINVAL;
5106
5107 params.support_p2p_ps = tmp;
5108 } else {
5109 /*
5110 * if not specified, assume it's supported for P2P GO interface,
5111 * and is NOT supported for AP interface
5112 */
5113 params.support_p2p_ps =
5114 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5115 }
5116
5117 if (info->attrs[NL80211_ATTR_PEER_AID])
5118 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5119 else
5120 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5121 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5122 return -EINVAL;
5123
5124 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5125 params.capability =
5126 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5127 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5128 }
5129
5130 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5131 params.ext_capab =
5132 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5133 params.ext_capab_len =
5134 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5135 }
5136
5137 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5138 params.ht_capa =
5139 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5140
5141 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5142 params.vht_capa =
5143 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5144
5145 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5146 params.opmode_notif_used = true;
5147 params.opmode_notif =
5148 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5149 }
5150
5151 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5152 params.plink_action =
5153 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5154 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5155 return -EINVAL;
5156 }
5157
5158 err = nl80211_parse_sta_channel_info(info, &params);
5159 if (err)
5160 return err;
5161
5162 err = nl80211_parse_sta_wme(info, &params);
5163 if (err)
5164 return err;
5165
5166 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5167 return -EINVAL;
5168
5169 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5170 * as userspace might just pass through the capabilities from the IEs
5171 * directly, rather than enforcing this restriction and returning an
5172 * error in this case.
5173 */
5174 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5175 params.ht_capa = NULL;
5176 params.vht_capa = NULL;
5177 }
5178
5179 /* When you run into this, adjust the code below for the new flag */
5180 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5181
5182 switch (dev->ieee80211_ptr->iftype) {
5183 case NL80211_IFTYPE_AP:
5184 case NL80211_IFTYPE_AP_VLAN:
5185 case NL80211_IFTYPE_P2P_GO:
5186 /* ignore WME attributes if iface/sta is not capable */
5187 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5188 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5189 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5190
5191 /* TDLS peers cannot be added */
5192 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5193 info->attrs[NL80211_ATTR_PEER_AID])
5194 return -EINVAL;
5195 /* but don't bother the driver with it */
5196 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5197
5198 /* allow authenticated/associated only if driver handles it */
5199 if (!(rdev->wiphy.features &
5200 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5201 params.sta_flags_mask & auth_assoc)
5202 return -EINVAL;
5203
5204 /* Older userspace, or userspace wanting to be compatible with
5205 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5206 * and assoc flags in the mask, but assumes the station will be
5207 * added as associated anyway since this was the required driver
5208 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5209 * introduced.
5210 * In order to not bother drivers with this quirk in the API
5211 * set the flags in both the mask and set for new stations in
5212 * this case.
5213 */
5214 if (!(params.sta_flags_mask & auth_assoc)) {
5215 params.sta_flags_mask |= auth_assoc;
5216 params.sta_flags_set |= auth_assoc;
5217 }
5218
5219 /* must be last in here for error handling */
5220 params.vlan = get_vlan(info, rdev);
5221 if (IS_ERR(params.vlan))
5222 return PTR_ERR(params.vlan);
5223 break;
5224 case NL80211_IFTYPE_MESH_POINT:
5225 /* ignore uAPSD data */
5226 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5227
5228 /* associated is disallowed */
5229 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5230 return -EINVAL;
5231 /* TDLS peers cannot be added */
5232 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5233 info->attrs[NL80211_ATTR_PEER_AID])
5234 return -EINVAL;
5235 break;
5236 case NL80211_IFTYPE_STATION:
5237 case NL80211_IFTYPE_P2P_CLIENT:
5238 /* ignore uAPSD data */
5239 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5240
5241 /* these are disallowed */
5242 if (params.sta_flags_mask &
5243 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5244 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5245 return -EINVAL;
5246 /* Only TDLS peers can be added */
5247 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5248 return -EINVAL;
5249 /* Can only add if TDLS ... */
5250 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5251 return -EOPNOTSUPP;
5252 /* ... with external setup is supported */
5253 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5254 return -EOPNOTSUPP;
5255 /*
5256 * Older wpa_supplicant versions always mark the TDLS peer
5257 * as authorized, but it shouldn't yet be.
5258 */
5259 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5260 break;
5261 default:
5262 return -EOPNOTSUPP;
5263 }
5264
5265 /* be aware of params.vlan when changing code here */
5266
5267 err = rdev_add_station(rdev, dev, mac_addr, &params);
5268
5269 if (params.vlan)
5270 dev_put(params.vlan);
5271 return err;
5272 }
5273
5274 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5275 {
5276 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5277 struct net_device *dev = info->user_ptr[1];
5278 struct station_del_parameters params;
5279
5280 memset(&params, 0, sizeof(params));
5281
5282 if (info->attrs[NL80211_ATTR_MAC])
5283 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5284
5285 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5286 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5289 return -EINVAL;
5290
5291 if (!rdev->ops->del_station)
5292 return -EOPNOTSUPP;
5293
5294 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5295 params.subtype =
5296 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5297 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5298 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5299 return -EINVAL;
5300 } else {
5301 /* Default to Deauthentication frame */
5302 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5303 }
5304
5305 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5306 params.reason_code =
5307 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5308 if (params.reason_code == 0)
5309 return -EINVAL; /* 0 is reserved */
5310 } else {
5311 /* Default to reason code 2 */
5312 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5313 }
5314
5315 return rdev_del_station(rdev, dev, &params);
5316 }
5317
5318 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5319 int flags, struct net_device *dev,
5320 u8 *dst, u8 *next_hop,
5321 struct mpath_info *pinfo)
5322 {
5323 void *hdr;
5324 struct nlattr *pinfoattr;
5325
5326 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5327 if (!hdr)
5328 return -1;
5329
5330 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5331 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5332 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5333 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5334 goto nla_put_failure;
5335
5336 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5337 if (!pinfoattr)
5338 goto nla_put_failure;
5339 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5340 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5341 pinfo->frame_qlen))
5342 goto nla_put_failure;
5343 if (((pinfo->filled & MPATH_INFO_SN) &&
5344 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5345 ((pinfo->filled & MPATH_INFO_METRIC) &&
5346 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5347 pinfo->metric)) ||
5348 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5349 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5350 pinfo->exptime)) ||
5351 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5352 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5353 pinfo->flags)) ||
5354 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5355 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5356 pinfo->discovery_timeout)) ||
5357 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5358 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5359 pinfo->discovery_retries)))
5360 goto nla_put_failure;
5361
5362 nla_nest_end(msg, pinfoattr);
5363
5364 genlmsg_end(msg, hdr);
5365 return 0;
5366
5367 nla_put_failure:
5368 genlmsg_cancel(msg, hdr);
5369 return -EMSGSIZE;
5370 }
5371
5372 static int nl80211_dump_mpath(struct sk_buff *skb,
5373 struct netlink_callback *cb)
5374 {
5375 struct mpath_info pinfo;
5376 struct cfg80211_registered_device *rdev;
5377 struct wireless_dev *wdev;
5378 u8 dst[ETH_ALEN];
5379 u8 next_hop[ETH_ALEN];
5380 int path_idx = cb->args[2];
5381 int err;
5382
5383 rtnl_lock();
5384 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5385 if (err)
5386 goto out_err;
5387
5388 if (!rdev->ops->dump_mpath) {
5389 err = -EOPNOTSUPP;
5390 goto out_err;
5391 }
5392
5393 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5394 err = -EOPNOTSUPP;
5395 goto out_err;
5396 }
5397
5398 while (1) {
5399 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5400 next_hop, &pinfo);
5401 if (err == -ENOENT)
5402 break;
5403 if (err)
5404 goto out_err;
5405
5406 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5407 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5408 wdev->netdev, dst, next_hop,
5409 &pinfo) < 0)
5410 goto out;
5411
5412 path_idx++;
5413 }
5414
5415 out:
5416 cb->args[2] = path_idx;
5417 err = skb->len;
5418 out_err:
5419 rtnl_unlock();
5420 return err;
5421 }
5422
5423 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5424 {
5425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5426 int err;
5427 struct net_device *dev = info->user_ptr[1];
5428 struct mpath_info pinfo;
5429 struct sk_buff *msg;
5430 u8 *dst = NULL;
5431 u8 next_hop[ETH_ALEN];
5432
5433 memset(&pinfo, 0, sizeof(pinfo));
5434
5435 if (!info->attrs[NL80211_ATTR_MAC])
5436 return -EINVAL;
5437
5438 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5439
5440 if (!rdev->ops->get_mpath)
5441 return -EOPNOTSUPP;
5442
5443 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5444 return -EOPNOTSUPP;
5445
5446 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5447 if (err)
5448 return err;
5449
5450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5451 if (!msg)
5452 return -ENOMEM;
5453
5454 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5455 dev, dst, next_hop, &pinfo) < 0) {
5456 nlmsg_free(msg);
5457 return -ENOBUFS;
5458 }
5459
5460 return genlmsg_reply(msg, info);
5461 }
5462
5463 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5464 {
5465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5466 struct net_device *dev = info->user_ptr[1];
5467 u8 *dst = NULL;
5468 u8 *next_hop = NULL;
5469
5470 if (!info->attrs[NL80211_ATTR_MAC])
5471 return -EINVAL;
5472
5473 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5474 return -EINVAL;
5475
5476 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5477 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5478
5479 if (!rdev->ops->change_mpath)
5480 return -EOPNOTSUPP;
5481
5482 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5483 return -EOPNOTSUPP;
5484
5485 return rdev_change_mpath(rdev, dev, dst, next_hop);
5486 }
5487
5488 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5489 {
5490 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5491 struct net_device *dev = info->user_ptr[1];
5492 u8 *dst = NULL;
5493 u8 *next_hop = NULL;
5494
5495 if (!info->attrs[NL80211_ATTR_MAC])
5496 return -EINVAL;
5497
5498 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5499 return -EINVAL;
5500
5501 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5502 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5503
5504 if (!rdev->ops->add_mpath)
5505 return -EOPNOTSUPP;
5506
5507 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5508 return -EOPNOTSUPP;
5509
5510 return rdev_add_mpath(rdev, dev, dst, next_hop);
5511 }
5512
5513 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5514 {
5515 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5516 struct net_device *dev = info->user_ptr[1];
5517 u8 *dst = NULL;
5518
5519 if (info->attrs[NL80211_ATTR_MAC])
5520 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5521
5522 if (!rdev->ops->del_mpath)
5523 return -EOPNOTSUPP;
5524
5525 return rdev_del_mpath(rdev, dev, dst);
5526 }
5527
5528 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5529 {
5530 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5531 int err;
5532 struct net_device *dev = info->user_ptr[1];
5533 struct mpath_info pinfo;
5534 struct sk_buff *msg;
5535 u8 *dst = NULL;
5536 u8 mpp[ETH_ALEN];
5537
5538 memset(&pinfo, 0, sizeof(pinfo));
5539
5540 if (!info->attrs[NL80211_ATTR_MAC])
5541 return -EINVAL;
5542
5543 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5544
5545 if (!rdev->ops->get_mpp)
5546 return -EOPNOTSUPP;
5547
5548 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5549 return -EOPNOTSUPP;
5550
5551 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5552 if (err)
5553 return err;
5554
5555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5556 if (!msg)
5557 return -ENOMEM;
5558
5559 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5560 dev, dst, mpp, &pinfo) < 0) {
5561 nlmsg_free(msg);
5562 return -ENOBUFS;
5563 }
5564
5565 return genlmsg_reply(msg, info);
5566 }
5567
5568 static int nl80211_dump_mpp(struct sk_buff *skb,
5569 struct netlink_callback *cb)
5570 {
5571 struct mpath_info pinfo;
5572 struct cfg80211_registered_device *rdev;
5573 struct wireless_dev *wdev;
5574 u8 dst[ETH_ALEN];
5575 u8 mpp[ETH_ALEN];
5576 int path_idx = cb->args[2];
5577 int err;
5578
5579 rtnl_lock();
5580 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5581 if (err)
5582 goto out_err;
5583
5584 if (!rdev->ops->dump_mpp) {
5585 err = -EOPNOTSUPP;
5586 goto out_err;
5587 }
5588
5589 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5590 err = -EOPNOTSUPP;
5591 goto out_err;
5592 }
5593
5594 while (1) {
5595 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5596 mpp, &pinfo);
5597 if (err == -ENOENT)
5598 break;
5599 if (err)
5600 goto out_err;
5601
5602 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5603 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5604 wdev->netdev, dst, mpp,
5605 &pinfo) < 0)
5606 goto out;
5607
5608 path_idx++;
5609 }
5610
5611 out:
5612 cb->args[2] = path_idx;
5613 err = skb->len;
5614 out_err:
5615 rtnl_unlock();
5616 return err;
5617 }
5618
5619 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5620 {
5621 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5622 struct net_device *dev = info->user_ptr[1];
5623 struct wireless_dev *wdev = dev->ieee80211_ptr;
5624 struct bss_parameters params;
5625 int err;
5626
5627 memset(&params, 0, sizeof(params));
5628 /* default to not changing parameters */
5629 params.use_cts_prot = -1;
5630 params.use_short_preamble = -1;
5631 params.use_short_slot_time = -1;
5632 params.ap_isolate = -1;
5633 params.ht_opmode = -1;
5634 params.p2p_ctwindow = -1;
5635 params.p2p_opp_ps = -1;
5636
5637 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5638 params.use_cts_prot =
5639 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5640 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5641 params.use_short_preamble =
5642 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5643 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5644 params.use_short_slot_time =
5645 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5646 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5647 params.basic_rates =
5648 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5649 params.basic_rates_len =
5650 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5651 }
5652 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5653 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5654 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5655 params.ht_opmode =
5656 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5657
5658 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5659 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5660 return -EINVAL;
5661 params.p2p_ctwindow =
5662 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5663 if (params.p2p_ctwindow < 0)
5664 return -EINVAL;
5665 if (params.p2p_ctwindow != 0 &&
5666 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5667 return -EINVAL;
5668 }
5669
5670 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5671 u8 tmp;
5672
5673 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5674 return -EINVAL;
5675 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5676 if (tmp > 1)
5677 return -EINVAL;
5678 params.p2p_opp_ps = tmp;
5679 if (params.p2p_opp_ps &&
5680 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5681 return -EINVAL;
5682 }
5683
5684 if (!rdev->ops->change_bss)
5685 return -EOPNOTSUPP;
5686
5687 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5688 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5689 return -EOPNOTSUPP;
5690
5691 wdev_lock(wdev);
5692 err = rdev_change_bss(rdev, dev, &params);
5693 wdev_unlock(wdev);
5694
5695 return err;
5696 }
5697
5698 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5699 {
5700 char *data = NULL;
5701 bool is_indoor;
5702 enum nl80211_user_reg_hint_type user_reg_hint_type;
5703 u32 owner_nlportid;
5704
5705 /*
5706 * You should only get this when cfg80211 hasn't yet initialized
5707 * completely when built-in to the kernel right between the time
5708 * window between nl80211_init() and regulatory_init(), if that is
5709 * even possible.
5710 */
5711 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5712 return -EINPROGRESS;
5713
5714 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5715 user_reg_hint_type =
5716 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5717 else
5718 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5719
5720 switch (user_reg_hint_type) {
5721 case NL80211_USER_REG_HINT_USER:
5722 case NL80211_USER_REG_HINT_CELL_BASE:
5723 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5724 return -EINVAL;
5725
5726 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5727 return regulatory_hint_user(data, user_reg_hint_type);
5728 case NL80211_USER_REG_HINT_INDOOR:
5729 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5730 owner_nlportid = info->snd_portid;
5731 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5732 } else {
5733 owner_nlportid = 0;
5734 is_indoor = true;
5735 }
5736
5737 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5738 default:
5739 return -EINVAL;
5740 }
5741 }
5742
5743 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5744 {
5745 return reg_reload_regdb();
5746 }
5747
5748 static int nl80211_get_mesh_config(struct sk_buff *skb,
5749 struct genl_info *info)
5750 {
5751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5752 struct net_device *dev = info->user_ptr[1];
5753 struct wireless_dev *wdev = dev->ieee80211_ptr;
5754 struct mesh_config cur_params;
5755 int err = 0;
5756 void *hdr;
5757 struct nlattr *pinfoattr;
5758 struct sk_buff *msg;
5759
5760 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5761 return -EOPNOTSUPP;
5762
5763 if (!rdev->ops->get_mesh_config)
5764 return -EOPNOTSUPP;
5765
5766 wdev_lock(wdev);
5767 /* If not connected, get default parameters */
5768 if (!wdev->mesh_id_len)
5769 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5770 else
5771 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5772 wdev_unlock(wdev);
5773
5774 if (err)
5775 return err;
5776
5777 /* Draw up a netlink message to send back */
5778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5779 if (!msg)
5780 return -ENOMEM;
5781 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5782 NL80211_CMD_GET_MESH_CONFIG);
5783 if (!hdr)
5784 goto out;
5785 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5786 if (!pinfoattr)
5787 goto nla_put_failure;
5788 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5789 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5790 cur_params.dot11MeshRetryTimeout) ||
5791 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5792 cur_params.dot11MeshConfirmTimeout) ||
5793 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5794 cur_params.dot11MeshHoldingTimeout) ||
5795 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5796 cur_params.dot11MeshMaxPeerLinks) ||
5797 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5798 cur_params.dot11MeshMaxRetries) ||
5799 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5800 cur_params.dot11MeshTTL) ||
5801 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5802 cur_params.element_ttl) ||
5803 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5804 cur_params.auto_open_plinks) ||
5805 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5806 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5807 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5808 cur_params.dot11MeshHWMPmaxPREQretries) ||
5809 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5810 cur_params.path_refresh_time) ||
5811 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5812 cur_params.min_discovery_timeout) ||
5813 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5814 cur_params.dot11MeshHWMPactivePathTimeout) ||
5815 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5816 cur_params.dot11MeshHWMPpreqMinInterval) ||
5817 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5818 cur_params.dot11MeshHWMPperrMinInterval) ||
5819 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5820 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5821 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5822 cur_params.dot11MeshHWMPRootMode) ||
5823 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5824 cur_params.dot11MeshHWMPRannInterval) ||
5825 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5826 cur_params.dot11MeshGateAnnouncementProtocol) ||
5827 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5828 cur_params.dot11MeshForwarding) ||
5829 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5830 cur_params.rssi_threshold) ||
5831 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5832 cur_params.ht_opmode) ||
5833 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5834 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5835 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5836 cur_params.dot11MeshHWMProotInterval) ||
5837 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5838 cur_params.dot11MeshHWMPconfirmationInterval) ||
5839 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5840 cur_params.power_mode) ||
5841 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5842 cur_params.dot11MeshAwakeWindowDuration) ||
5843 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5844 cur_params.plink_timeout))
5845 goto nla_put_failure;
5846 nla_nest_end(msg, pinfoattr);
5847 genlmsg_end(msg, hdr);
5848 return genlmsg_reply(msg, info);
5849
5850 nla_put_failure:
5851 genlmsg_cancel(msg, hdr);
5852 out:
5853 nlmsg_free(msg);
5854 return -ENOBUFS;
5855 }
5856
5857 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5858 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5859 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5860 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5861 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5862 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5863 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5864 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5865 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5866 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5867 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5868 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5869 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5870 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5871 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5872 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5873 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5874 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5875 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5876 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5877 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5878 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5879 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5880 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5881 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5882 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5883 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5884 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5885 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5886 };
5887
5888 static const struct nla_policy
5889 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5890 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5891 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5892 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5893 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5894 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5895 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5896 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5897 .len = IEEE80211_MAX_DATA_LEN },
5898 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5899 };
5900
5901 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5902 {
5903 u8 val = nla_get_u8(nla);
5904 if (val < min || val > max)
5905 return -EINVAL;
5906 *out = val;
5907 return 0;
5908 }
5909
5910 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5911 {
5912 u8 val = nla_get_u8(nla);
5913 if (val < min || val > max)
5914 return -EINVAL;
5915 *out = val;
5916 return 0;
5917 }
5918
5919 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5920 {
5921 u16 val = nla_get_u16(nla);
5922 if (val < min || val > max)
5923 return -EINVAL;
5924 *out = val;
5925 return 0;
5926 }
5927
5928 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5929 {
5930 u32 val = nla_get_u32(nla);
5931 if (val < min || val > max)
5932 return -EINVAL;
5933 *out = val;
5934 return 0;
5935 }
5936
5937 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5938 {
5939 s32 val = nla_get_s32(nla);
5940 if (val < min || val > max)
5941 return -EINVAL;
5942 *out = val;
5943 return 0;
5944 }
5945
5946 static int nl80211_check_power_mode(const struct nlattr *nla,
5947 enum nl80211_mesh_power_mode min,
5948 enum nl80211_mesh_power_mode max,
5949 enum nl80211_mesh_power_mode *out)
5950 {
5951 u32 val = nla_get_u32(nla);
5952 if (val < min || val > max)
5953 return -EINVAL;
5954 *out = val;
5955 return 0;
5956 }
5957
5958 static int nl80211_parse_mesh_config(struct genl_info *info,
5959 struct mesh_config *cfg,
5960 u32 *mask_out)
5961 {
5962 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5963 u32 mask = 0;
5964 u16 ht_opmode;
5965
5966 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5967 do { \
5968 if (tb[attr]) { \
5969 if (fn(tb[attr], min, max, &cfg->param)) \
5970 return -EINVAL; \
5971 mask |= (1 << (attr - 1)); \
5972 } \
5973 } while (0)
5974
5975 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5976 return -EINVAL;
5977 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5978 info->attrs[NL80211_ATTR_MESH_CONFIG],
5979 nl80211_meshconf_params_policy, info->extack))
5980 return -EINVAL;
5981
5982 /* This makes sure that there aren't more than 32 mesh config
5983 * parameters (otherwise our bitfield scheme would not work.) */
5984 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5985
5986 /* Fill in the params struct */
5987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5988 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5989 nl80211_check_u16);
5990 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5991 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5992 nl80211_check_u16);
5993 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5994 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5995 nl80211_check_u16);
5996 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5997 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5998 nl80211_check_u16);
5999 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
6000 mask, NL80211_MESHCONF_MAX_RETRIES,
6001 nl80211_check_u8);
6002 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
6003 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
6004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
6005 mask, NL80211_MESHCONF_ELEMENT_TTL,
6006 nl80211_check_u8);
6007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
6008 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6009 nl80211_check_bool);
6010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6011 1, 255, mask,
6012 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6013 nl80211_check_u32);
6014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
6015 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6016 nl80211_check_u8);
6017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
6018 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
6019 nl80211_check_u32);
6020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
6021 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6022 nl80211_check_u16);
6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6024 1, 65535, mask,
6025 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6026 nl80211_check_u32);
6027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6028 1, 65535, mask,
6029 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6030 nl80211_check_u16);
6031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6032 1, 65535, mask,
6033 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6034 nl80211_check_u16);
6035 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6036 dot11MeshHWMPnetDiameterTraversalTime,
6037 1, 65535, mask,
6038 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6039 nl80211_check_u16);
6040 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6041 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6042 nl80211_check_u8);
6043 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6044 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6045 nl80211_check_u16);
6046 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6047 dot11MeshGateAnnouncementProtocol, 0, 1,
6048 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6049 nl80211_check_bool);
6050 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6051 mask, NL80211_MESHCONF_FORWARDING,
6052 nl80211_check_bool);
6053 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6054 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6055 nl80211_check_s32);
6056 /*
6057 * Check HT operation mode based on
6058 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
6059 */
6060 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6061 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6062
6063 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6064 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6065 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6066 return -EINVAL;
6067
6068 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
6069 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6070 return -EINVAL;
6071
6072 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
6073 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
6074 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
6075 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
6076 return -EINVAL;
6077 break;
6078 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
6079 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
6080 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6081 return -EINVAL;
6082 break;
6083 }
6084 cfg->ht_opmode = ht_opmode;
6085 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6086 }
6087 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6088 1, 65535, mask,
6089 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6090 nl80211_check_u32);
6091 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6092 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6093 nl80211_check_u16);
6094 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6095 dot11MeshHWMPconfirmationInterval,
6096 1, 65535, mask,
6097 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6098 nl80211_check_u16);
6099 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6100 NL80211_MESH_POWER_ACTIVE,
6101 NL80211_MESH_POWER_MAX,
6102 mask, NL80211_MESHCONF_POWER_MODE,
6103 nl80211_check_power_mode);
6104 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6105 0, 65535, mask,
6106 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6107 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6108 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6109 nl80211_check_u32);
6110 if (mask_out)
6111 *mask_out = mask;
6112
6113 return 0;
6114
6115 #undef FILL_IN_MESH_PARAM_IF_SET
6116 }
6117
6118 static int nl80211_parse_mesh_setup(struct genl_info *info,
6119 struct mesh_setup *setup)
6120 {
6121 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6122 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6123
6124 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6125 return -EINVAL;
6126 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6127 info->attrs[NL80211_ATTR_MESH_SETUP],
6128 nl80211_mesh_setup_params_policy, info->extack))
6129 return -EINVAL;
6130
6131 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6132 setup->sync_method =
6133 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6134 IEEE80211_SYNC_METHOD_VENDOR :
6135 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6136
6137 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6138 setup->path_sel_proto =
6139 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6140 IEEE80211_PATH_PROTOCOL_VENDOR :
6141 IEEE80211_PATH_PROTOCOL_HWMP;
6142
6143 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6144 setup->path_metric =
6145 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6146 IEEE80211_PATH_METRIC_VENDOR :
6147 IEEE80211_PATH_METRIC_AIRTIME;
6148
6149 if (tb[NL80211_MESH_SETUP_IE]) {
6150 struct nlattr *ieattr =
6151 tb[NL80211_MESH_SETUP_IE];
6152 if (!is_valid_ie_attr(ieattr))
6153 return -EINVAL;
6154 setup->ie = nla_data(ieattr);
6155 setup->ie_len = nla_len(ieattr);
6156 }
6157 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6158 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6159 return -EINVAL;
6160 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6161 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6162 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6163 if (setup->is_secure)
6164 setup->user_mpm = true;
6165
6166 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6167 if (!setup->user_mpm)
6168 return -EINVAL;
6169 setup->auth_id =
6170 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6171 }
6172
6173 return 0;
6174 }
6175
6176 static int nl80211_update_mesh_config(struct sk_buff *skb,
6177 struct genl_info *info)
6178 {
6179 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6180 struct net_device *dev = info->user_ptr[1];
6181 struct wireless_dev *wdev = dev->ieee80211_ptr;
6182 struct mesh_config cfg;
6183 u32 mask;
6184 int err;
6185
6186 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6187 return -EOPNOTSUPP;
6188
6189 if (!rdev->ops->update_mesh_config)
6190 return -EOPNOTSUPP;
6191
6192 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6193 if (err)
6194 return err;
6195
6196 wdev_lock(wdev);
6197 if (!wdev->mesh_id_len)
6198 err = -ENOLINK;
6199
6200 if (!err)
6201 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6202
6203 wdev_unlock(wdev);
6204
6205 return err;
6206 }
6207
6208 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6209 struct sk_buff *msg)
6210 {
6211 struct nlattr *nl_reg_rules;
6212 unsigned int i;
6213
6214 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6215 (regdom->dfs_region &&
6216 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6217 goto nla_put_failure;
6218
6219 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6220 if (!nl_reg_rules)
6221 goto nla_put_failure;
6222
6223 for (i = 0; i < regdom->n_reg_rules; i++) {
6224 struct nlattr *nl_reg_rule;
6225 const struct ieee80211_reg_rule *reg_rule;
6226 const struct ieee80211_freq_range *freq_range;
6227 const struct ieee80211_power_rule *power_rule;
6228 unsigned int max_bandwidth_khz;
6229
6230 reg_rule = &regdom->reg_rules[i];
6231 freq_range = &reg_rule->freq_range;
6232 power_rule = &reg_rule->power_rule;
6233
6234 nl_reg_rule = nla_nest_start(msg, i);
6235 if (!nl_reg_rule)
6236 goto nla_put_failure;
6237
6238 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6239 if (!max_bandwidth_khz)
6240 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6241 reg_rule);
6242
6243 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6244 reg_rule->flags) ||
6245 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6246 freq_range->start_freq_khz) ||
6247 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6248 freq_range->end_freq_khz) ||
6249 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6250 max_bandwidth_khz) ||
6251 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6252 power_rule->max_antenna_gain) ||
6253 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6254 power_rule->max_eirp) ||
6255 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6256 reg_rule->dfs_cac_ms))
6257 goto nla_put_failure;
6258
6259 nla_nest_end(msg, nl_reg_rule);
6260 }
6261
6262 nla_nest_end(msg, nl_reg_rules);
6263 return 0;
6264
6265 nla_put_failure:
6266 return -EMSGSIZE;
6267 }
6268
6269 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6270 {
6271 const struct ieee80211_regdomain *regdom = NULL;
6272 struct cfg80211_registered_device *rdev;
6273 struct wiphy *wiphy = NULL;
6274 struct sk_buff *msg;
6275 void *hdr;
6276
6277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6278 if (!msg)
6279 return -ENOBUFS;
6280
6281 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6282 NL80211_CMD_GET_REG);
6283 if (!hdr)
6284 goto put_failure;
6285
6286 if (info->attrs[NL80211_ATTR_WIPHY]) {
6287 bool self_managed;
6288
6289 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6290 if (IS_ERR(rdev)) {
6291 nlmsg_free(msg);
6292 return PTR_ERR(rdev);
6293 }
6294
6295 wiphy = &rdev->wiphy;
6296 self_managed = wiphy->regulatory_flags &
6297 REGULATORY_WIPHY_SELF_MANAGED;
6298 regdom = get_wiphy_regdom(wiphy);
6299
6300 /* a self-managed-reg device must have a private regdom */
6301 if (WARN_ON(!regdom && self_managed)) {
6302 nlmsg_free(msg);
6303 return -EINVAL;
6304 }
6305
6306 if (regdom &&
6307 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6308 goto nla_put_failure;
6309 }
6310
6311 if (!wiphy && reg_last_request_cell_base() &&
6312 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6313 NL80211_USER_REG_HINT_CELL_BASE))
6314 goto nla_put_failure;
6315
6316 rcu_read_lock();
6317
6318 if (!regdom)
6319 regdom = rcu_dereference(cfg80211_regdomain);
6320
6321 if (nl80211_put_regdom(regdom, msg))
6322 goto nla_put_failure_rcu;
6323
6324 rcu_read_unlock();
6325
6326 genlmsg_end(msg, hdr);
6327 return genlmsg_reply(msg, info);
6328
6329 nla_put_failure_rcu:
6330 rcu_read_unlock();
6331 nla_put_failure:
6332 genlmsg_cancel(msg, hdr);
6333 put_failure:
6334 nlmsg_free(msg);
6335 return -EMSGSIZE;
6336 }
6337
6338 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6339 u32 seq, int flags, struct wiphy *wiphy,
6340 const struct ieee80211_regdomain *regdom)
6341 {
6342 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6343 NL80211_CMD_GET_REG);
6344
6345 if (!hdr)
6346 return -1;
6347
6348 genl_dump_check_consistent(cb, hdr);
6349
6350 if (nl80211_put_regdom(regdom, msg))
6351 goto nla_put_failure;
6352
6353 if (!wiphy && reg_last_request_cell_base() &&
6354 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6355 NL80211_USER_REG_HINT_CELL_BASE))
6356 goto nla_put_failure;
6357
6358 if (wiphy &&
6359 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6360 goto nla_put_failure;
6361
6362 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6363 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6364 goto nla_put_failure;
6365
6366 genlmsg_end(msg, hdr);
6367 return 0;
6368
6369 nla_put_failure:
6370 genlmsg_cancel(msg, hdr);
6371 return -EMSGSIZE;
6372 }
6373
6374 static int nl80211_get_reg_dump(struct sk_buff *skb,
6375 struct netlink_callback *cb)
6376 {
6377 const struct ieee80211_regdomain *regdom = NULL;
6378 struct cfg80211_registered_device *rdev;
6379 int err, reg_idx, start = cb->args[2];
6380
6381 rtnl_lock();
6382
6383 if (cfg80211_regdomain && start == 0) {
6384 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6385 NLM_F_MULTI, NULL,
6386 rtnl_dereference(cfg80211_regdomain));
6387 if (err < 0)
6388 goto out_err;
6389 }
6390
6391 /* the global regdom is idx 0 */
6392 reg_idx = 1;
6393 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6394 regdom = get_wiphy_regdom(&rdev->wiphy);
6395 if (!regdom)
6396 continue;
6397
6398 if (++reg_idx <= start)
6399 continue;
6400
6401 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6402 NLM_F_MULTI, &rdev->wiphy, regdom);
6403 if (err < 0) {
6404 reg_idx--;
6405 break;
6406 }
6407 }
6408
6409 cb->args[2] = reg_idx;
6410 err = skb->len;
6411 out_err:
6412 rtnl_unlock();
6413 return err;
6414 }
6415
6416 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6417 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6418 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6419 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6420 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6421 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6422 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6423 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6424 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6425 };
6426
6427 static int parse_reg_rule(struct nlattr *tb[],
6428 struct ieee80211_reg_rule *reg_rule)
6429 {
6430 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6431 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6432
6433 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6434 return -EINVAL;
6435 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6436 return -EINVAL;
6437 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6438 return -EINVAL;
6439 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6440 return -EINVAL;
6441 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6442 return -EINVAL;
6443
6444 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6445
6446 freq_range->start_freq_khz =
6447 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6448 freq_range->end_freq_khz =
6449 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6450 freq_range->max_bandwidth_khz =
6451 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6452
6453 power_rule->max_eirp =
6454 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6455
6456 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6457 power_rule->max_antenna_gain =
6458 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6459
6460 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6461 reg_rule->dfs_cac_ms =
6462 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6463
6464 return 0;
6465 }
6466
6467 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6468 {
6469 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6470 struct nlattr *nl_reg_rule;
6471 char *alpha2;
6472 int rem_reg_rules, r;
6473 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6474 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6475 struct ieee80211_regdomain *rd;
6476
6477 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6478 return -EINVAL;
6479
6480 if (!info->attrs[NL80211_ATTR_REG_RULES])
6481 return -EINVAL;
6482
6483 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6484
6485 if (info->attrs[NL80211_ATTR_DFS_REGION])
6486 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6487
6488 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6489 rem_reg_rules) {
6490 num_rules++;
6491 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6492 return -EINVAL;
6493 }
6494
6495 if (!reg_is_valid_request(alpha2))
6496 return -EINVAL;
6497
6498 size_of_regd = sizeof(struct ieee80211_regdomain) +
6499 num_rules * sizeof(struct ieee80211_reg_rule);
6500
6501 rd = kzalloc(size_of_regd, GFP_KERNEL);
6502 if (!rd)
6503 return -ENOMEM;
6504
6505 rd->n_reg_rules = num_rules;
6506 rd->alpha2[0] = alpha2[0];
6507 rd->alpha2[1] = alpha2[1];
6508
6509 /*
6510 * Disable DFS master mode if the DFS region was
6511 * not supported or known on this kernel.
6512 */
6513 if (reg_supported_dfs_region(dfs_region))
6514 rd->dfs_region = dfs_region;
6515
6516 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6517 rem_reg_rules) {
6518 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6519 nl_reg_rule, reg_rule_policy,
6520 info->extack);
6521 if (r)
6522 goto bad_reg;
6523 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6524 if (r)
6525 goto bad_reg;
6526
6527 rule_idx++;
6528
6529 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6530 r = -EINVAL;
6531 goto bad_reg;
6532 }
6533 }
6534
6535 /* set_regdom takes ownership of rd */
6536 return set_regdom(rd, REGD_SOURCE_CRDA);
6537 bad_reg:
6538 kfree(rd);
6539 return r;
6540 }
6541 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6542
6543 static int validate_scan_freqs(struct nlattr *freqs)
6544 {
6545 struct nlattr *attr1, *attr2;
6546 int n_channels = 0, tmp1, tmp2;
6547
6548 nla_for_each_nested(attr1, freqs, tmp1)
6549 if (nla_len(attr1) != sizeof(u32))
6550 return 0;
6551
6552 nla_for_each_nested(attr1, freqs, tmp1) {
6553 n_channels++;
6554 /*
6555 * Some hardware has a limited channel list for
6556 * scanning, and it is pretty much nonsensical
6557 * to scan for a channel twice, so disallow that
6558 * and don't require drivers to check that the
6559 * channel list they get isn't longer than what
6560 * they can scan, as long as they can scan all
6561 * the channels they registered at once.
6562 */
6563 nla_for_each_nested(attr2, freqs, tmp2)
6564 if (attr1 != attr2 &&
6565 nla_get_u32(attr1) == nla_get_u32(attr2))
6566 return 0;
6567 }
6568
6569 return n_channels;
6570 }
6571
6572 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6573 {
6574 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6575 }
6576
6577 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6578 struct cfg80211_bss_selection *bss_select)
6579 {
6580 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6581 struct nlattr *nest;
6582 int err;
6583 bool found = false;
6584 int i;
6585
6586 /* only process one nested attribute */
6587 nest = nla_data(nla);
6588 if (!nla_ok(nest, nla_len(nest)))
6589 return -EINVAL;
6590
6591 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6592 nl80211_bss_select_policy, NULL);
6593 if (err)
6594 return err;
6595
6596 /* only one attribute may be given */
6597 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6598 if (attr[i]) {
6599 if (found)
6600 return -EINVAL;
6601 found = true;
6602 }
6603 }
6604
6605 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6606
6607 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6608 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6609
6610 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6611 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6612 bss_select->param.band_pref =
6613 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6614 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6615 return -EINVAL;
6616 }
6617
6618 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6619 struct nl80211_bss_select_rssi_adjust *adj_param;
6620
6621 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6622 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6623 bss_select->param.adjust.band = adj_param->band;
6624 bss_select->param.adjust.delta = adj_param->delta;
6625 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6626 return -EINVAL;
6627 }
6628
6629 /* user-space did not provide behaviour attribute */
6630 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6631 return -EINVAL;
6632
6633 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6634 return -EINVAL;
6635
6636 return 0;
6637 }
6638
6639 static int nl80211_parse_random_mac(struct nlattr **attrs,
6640 u8 *mac_addr, u8 *mac_addr_mask)
6641 {
6642 int i;
6643
6644 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6645 eth_zero_addr(mac_addr);
6646 eth_zero_addr(mac_addr_mask);
6647 mac_addr[0] = 0x2;
6648 mac_addr_mask[0] = 0x3;
6649
6650 return 0;
6651 }
6652
6653 /* need both or none */
6654 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6655 return -EINVAL;
6656
6657 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6658 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6659
6660 /* don't allow or configure an mcast address */
6661 if (!is_multicast_ether_addr(mac_addr_mask) ||
6662 is_multicast_ether_addr(mac_addr))
6663 return -EINVAL;
6664
6665 /*
6666 * allow users to pass a MAC address that has bits set outside
6667 * of the mask, but don't bother drivers with having to deal
6668 * with such bits
6669 */
6670 for (i = 0; i < ETH_ALEN; i++)
6671 mac_addr[i] &= mac_addr_mask[i];
6672
6673 return 0;
6674 }
6675
6676 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6677 {
6678 ASSERT_WDEV_LOCK(wdev);
6679
6680 if (!cfg80211_beaconing_iface_active(wdev))
6681 return true;
6682
6683 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6684 return true;
6685
6686 return regulatory_pre_cac_allowed(wdev->wiphy);
6687 }
6688
6689 static int
6690 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6691 void *request, struct nlattr **attrs,
6692 bool is_sched_scan)
6693 {
6694 u8 *mac_addr, *mac_addr_mask;
6695 u32 *flags;
6696 enum nl80211_feature_flags randomness_flag;
6697
6698 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6699 return 0;
6700
6701 if (is_sched_scan) {
6702 struct cfg80211_sched_scan_request *req = request;
6703
6704 randomness_flag = wdev ?
6705 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6706 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6707 flags = &req->flags;
6708 mac_addr = req->mac_addr;
6709 mac_addr_mask = req->mac_addr_mask;
6710 } else {
6711 struct cfg80211_scan_request *req = request;
6712
6713 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6714 flags = &req->flags;
6715 mac_addr = req->mac_addr;
6716 mac_addr_mask = req->mac_addr_mask;
6717 }
6718
6719 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6720
6721 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6722 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6723 return -EOPNOTSUPP;
6724
6725 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6726 int err;
6727
6728 if (!(wiphy->features & randomness_flag) ||
6729 (wdev && wdev->current_bss))
6730 return -EOPNOTSUPP;
6731
6732 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6733 if (err)
6734 return err;
6735 }
6736
6737 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6738 !wiphy_ext_feature_isset(wiphy,
6739 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6740 return -EOPNOTSUPP;
6741
6742 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6743 !wiphy_ext_feature_isset(wiphy,
6744 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6745 return -EOPNOTSUPP;
6746
6747 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6748 !wiphy_ext_feature_isset(wiphy,
6749 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6750 return -EOPNOTSUPP;
6751
6752 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6753 !wiphy_ext_feature_isset(wiphy,
6754 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6755 return -EOPNOTSUPP;
6756
6757 return 0;
6758 }
6759
6760 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6761 {
6762 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6763 struct wireless_dev *wdev = info->user_ptr[1];
6764 struct cfg80211_scan_request *request;
6765 struct nlattr *attr;
6766 struct wiphy *wiphy;
6767 int err, tmp, n_ssids = 0, n_channels, i;
6768 size_t ie_len;
6769
6770 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6771 return -EINVAL;
6772
6773 wiphy = &rdev->wiphy;
6774
6775 if (wdev->iftype == NL80211_IFTYPE_NAN)
6776 return -EOPNOTSUPP;
6777
6778 if (!rdev->ops->scan)
6779 return -EOPNOTSUPP;
6780
6781 if (rdev->scan_req || rdev->scan_msg) {
6782 err = -EBUSY;
6783 goto unlock;
6784 }
6785
6786 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6787 n_channels = validate_scan_freqs(
6788 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6789 if (!n_channels) {
6790 err = -EINVAL;
6791 goto unlock;
6792 }
6793 } else {
6794 n_channels = ieee80211_get_num_supported_channels(wiphy);
6795 }
6796
6797 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6798 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6799 n_ssids++;
6800
6801 if (n_ssids > wiphy->max_scan_ssids) {
6802 err = -EINVAL;
6803 goto unlock;
6804 }
6805
6806 if (info->attrs[NL80211_ATTR_IE])
6807 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6808 else
6809 ie_len = 0;
6810
6811 if (ie_len > wiphy->max_scan_ie_len) {
6812 err = -EINVAL;
6813 goto unlock;
6814 }
6815
6816 request = kzalloc(sizeof(*request)
6817 + sizeof(*request->ssids) * n_ssids
6818 + sizeof(*request->channels) * n_channels
6819 + ie_len, GFP_KERNEL);
6820 if (!request) {
6821 err = -ENOMEM;
6822 goto unlock;
6823 }
6824
6825 if (n_ssids)
6826 request->ssids = (void *)&request->channels[n_channels];
6827 request->n_ssids = n_ssids;
6828 if (ie_len) {
6829 if (n_ssids)
6830 request->ie = (void *)(request->ssids + n_ssids);
6831 else
6832 request->ie = (void *)(request->channels + n_channels);
6833 }
6834
6835 i = 0;
6836 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6837 /* user specified, bail out if channel not found */
6838 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6839 struct ieee80211_channel *chan;
6840
6841 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6842
6843 if (!chan) {
6844 err = -EINVAL;
6845 goto out_free;
6846 }
6847
6848 /* ignore disabled channels */
6849 if (chan->flags & IEEE80211_CHAN_DISABLED)
6850 continue;
6851
6852 request->channels[i] = chan;
6853 i++;
6854 }
6855 } else {
6856 enum nl80211_band band;
6857
6858 /* all channels */
6859 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6860 int j;
6861
6862 if (!wiphy->bands[band])
6863 continue;
6864 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6865 struct ieee80211_channel *chan;
6866
6867 chan = &wiphy->bands[band]->channels[j];
6868
6869 if (chan->flags & IEEE80211_CHAN_DISABLED)
6870 continue;
6871
6872 request->channels[i] = chan;
6873 i++;
6874 }
6875 }
6876 }
6877
6878 if (!i) {
6879 err = -EINVAL;
6880 goto out_free;
6881 }
6882
6883 request->n_channels = i;
6884
6885 wdev_lock(wdev);
6886 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6887 struct ieee80211_channel *chan;
6888
6889 if (request->n_channels != 1) {
6890 wdev_unlock(wdev);
6891 err = -EBUSY;
6892 goto out_free;
6893 }
6894
6895 chan = request->channels[0];
6896 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6897 wdev_unlock(wdev);
6898 err = -EBUSY;
6899 goto out_free;
6900 }
6901 }
6902 wdev_unlock(wdev);
6903
6904 i = 0;
6905 if (n_ssids) {
6906 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6907 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6908 err = -EINVAL;
6909 goto out_free;
6910 }
6911 request->ssids[i].ssid_len = nla_len(attr);
6912 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6913 i++;
6914 }
6915 }
6916
6917 if (info->attrs[NL80211_ATTR_IE]) {
6918 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6919 memcpy((void *)request->ie,
6920 nla_data(info->attrs[NL80211_ATTR_IE]),
6921 request->ie_len);
6922 }
6923
6924 for (i = 0; i < NUM_NL80211_BANDS; i++)
6925 if (wiphy->bands[i])
6926 request->rates[i] =
6927 (1 << wiphy->bands[i]->n_bitrates) - 1;
6928
6929 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6930 nla_for_each_nested(attr,
6931 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6932 tmp) {
6933 enum nl80211_band band = nla_type(attr);
6934
6935 if (band < 0 || band >= NUM_NL80211_BANDS) {
6936 err = -EINVAL;
6937 goto out_free;
6938 }
6939
6940 if (!wiphy->bands[band])
6941 continue;
6942
6943 err = ieee80211_get_ratemask(wiphy->bands[band],
6944 nla_data(attr),
6945 nla_len(attr),
6946 &request->rates[band]);
6947 if (err)
6948 goto out_free;
6949 }
6950 }
6951
6952 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6953 if (!wiphy_ext_feature_isset(wiphy,
6954 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6955 err = -EOPNOTSUPP;
6956 goto out_free;
6957 }
6958
6959 request->duration =
6960 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6961 request->duration_mandatory =
6962 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6963 }
6964
6965 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6966 false);
6967 if (err)
6968 goto out_free;
6969
6970 request->no_cck =
6971 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6972
6973 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6974 * BSSID to scan for. This was problematic because that same attribute
6975 * was already used for another purpose (local random MAC address). The
6976 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6977 * compatibility with older userspace components, also use the
6978 * NL80211_ATTR_MAC value here if it can be determined to be used for
6979 * the specific BSSID use case instead of the random MAC address
6980 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6981 */
6982 if (info->attrs[NL80211_ATTR_BSSID])
6983 memcpy(request->bssid,
6984 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6985 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6986 info->attrs[NL80211_ATTR_MAC])
6987 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6988 ETH_ALEN);
6989 else
6990 eth_broadcast_addr(request->bssid);
6991
6992 request->wdev = wdev;
6993 request->wiphy = &rdev->wiphy;
6994 request->scan_start = jiffies;
6995
6996 rdev->scan_req = request;
6997 err = rdev_scan(rdev, request);
6998
6999 if (!err) {
7000 nl80211_send_scan_start(rdev, wdev);
7001 if (wdev->netdev)
7002 dev_hold(wdev->netdev);
7003 } else {
7004 out_free:
7005 rdev->scan_req = NULL;
7006 kfree(request);
7007 }
7008
7009 unlock:
7010 return err;
7011 }
7012
7013 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7014 {
7015 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7016 struct wireless_dev *wdev = info->user_ptr[1];
7017
7018 if (!rdev->ops->abort_scan)
7019 return -EOPNOTSUPP;
7020
7021 if (rdev->scan_msg)
7022 return 0;
7023
7024 if (!rdev->scan_req)
7025 return -ENOENT;
7026
7027 rdev_abort_scan(rdev, wdev);
7028 return 0;
7029 }
7030
7031 static int
7032 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7033 struct cfg80211_sched_scan_request *request,
7034 struct nlattr **attrs)
7035 {
7036 int tmp, err, i = 0;
7037 struct nlattr *attr;
7038
7039 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7040 u32 interval;
7041
7042 /*
7043 * If scan plans are not specified,
7044 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7045 * case one scan plan will be set with the specified scan
7046 * interval and infinite number of iterations.
7047 */
7048 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7049 if (!interval)
7050 return -EINVAL;
7051
7052 request->scan_plans[0].interval =
7053 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7054 if (!request->scan_plans[0].interval)
7055 return -EINVAL;
7056
7057 if (request->scan_plans[0].interval >
7058 wiphy->max_sched_scan_plan_interval)
7059 request->scan_plans[0].interval =
7060 wiphy->max_sched_scan_plan_interval;
7061
7062 return 0;
7063 }
7064
7065 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7066 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7067
7068 if (WARN_ON(i >= n_plans))
7069 return -EINVAL;
7070
7071 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7072 attr, nl80211_plan_policy, NULL);
7073 if (err)
7074 return err;
7075
7076 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7077 return -EINVAL;
7078
7079 request->scan_plans[i].interval =
7080 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7081 if (!request->scan_plans[i].interval ||
7082 request->scan_plans[i].interval >
7083 wiphy->max_sched_scan_plan_interval)
7084 return -EINVAL;
7085
7086 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7087 request->scan_plans[i].iterations =
7088 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7089 if (!request->scan_plans[i].iterations ||
7090 (request->scan_plans[i].iterations >
7091 wiphy->max_sched_scan_plan_iterations))
7092 return -EINVAL;
7093 } else if (i < n_plans - 1) {
7094 /*
7095 * All scan plans but the last one must specify
7096 * a finite number of iterations
7097 */
7098 return -EINVAL;
7099 }
7100
7101 i++;
7102 }
7103
7104 /*
7105 * The last scan plan must not specify the number of
7106 * iterations, it is supposed to run infinitely
7107 */
7108 if (request->scan_plans[n_plans - 1].iterations)
7109 return -EINVAL;
7110
7111 return 0;
7112 }
7113
7114 static struct cfg80211_sched_scan_request *
7115 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7116 struct nlattr **attrs, int max_match_sets)
7117 {
7118 struct cfg80211_sched_scan_request *request;
7119 struct nlattr *attr;
7120 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7121 enum nl80211_band band;
7122 size_t ie_len;
7123 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7124 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7125
7126 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7127 return ERR_PTR(-EINVAL);
7128
7129 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7130 n_channels = validate_scan_freqs(
7131 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7132 if (!n_channels)
7133 return ERR_PTR(-EINVAL);
7134 } else {
7135 n_channels = ieee80211_get_num_supported_channels(wiphy);
7136 }
7137
7138 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7139 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7140 tmp)
7141 n_ssids++;
7142
7143 if (n_ssids > wiphy->max_sched_scan_ssids)
7144 return ERR_PTR(-EINVAL);
7145
7146 /*
7147 * First, count the number of 'real' matchsets. Due to an issue with
7148 * the old implementation, matchsets containing only the RSSI attribute
7149 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7150 * RSSI for all matchsets, rather than their own matchset for reporting
7151 * all APs with a strong RSSI. This is needed to be compatible with
7152 * older userspace that treated a matchset with only the RSSI as the
7153 * global RSSI for all other matchsets - if there are other matchsets.
7154 */
7155 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7156 nla_for_each_nested(attr,
7157 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7158 tmp) {
7159 struct nlattr *rssi;
7160
7161 err = nla_parse_nested(tb,
7162 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7163 attr, nl80211_match_policy,
7164 NULL);
7165 if (err)
7166 return ERR_PTR(err);
7167
7168 /* SSID and BSSID are mutually exclusive */
7169 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7170 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7171 return ERR_PTR(-EINVAL);
7172
7173 /* add other standalone attributes here */
7174 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7175 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7176 n_match_sets++;
7177 continue;
7178 }
7179 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7180 if (rssi)
7181 default_match_rssi = nla_get_s32(rssi);
7182 }
7183 }
7184
7185 /* However, if there's no other matchset, add the RSSI one */
7186 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7187 n_match_sets = 1;
7188
7189 if (n_match_sets > max_match_sets)
7190 return ERR_PTR(-EINVAL);
7191
7192 if (attrs[NL80211_ATTR_IE])
7193 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7194 else
7195 ie_len = 0;
7196
7197 if (ie_len > wiphy->max_sched_scan_ie_len)
7198 return ERR_PTR(-EINVAL);
7199
7200 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7201 /*
7202 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7203 * each scan plan already specifies its own interval
7204 */
7205 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7206 return ERR_PTR(-EINVAL);
7207
7208 nla_for_each_nested(attr,
7209 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7210 n_plans++;
7211 } else {
7212 /*
7213 * The scan interval attribute is kept for backward
7214 * compatibility. If no scan plans are specified and sched scan
7215 * interval is specified, one scan plan will be set with this
7216 * scan interval and infinite number of iterations.
7217 */
7218 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7219 return ERR_PTR(-EINVAL);
7220
7221 n_plans = 1;
7222 }
7223
7224 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7225 return ERR_PTR(-EINVAL);
7226
7227 if (!wiphy_ext_feature_isset(
7228 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7229 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7230 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7231 return ERR_PTR(-EINVAL);
7232
7233 request = kzalloc(sizeof(*request)
7234 + sizeof(*request->ssids) * n_ssids
7235 + sizeof(*request->match_sets) * n_match_sets
7236 + sizeof(*request->scan_plans) * n_plans
7237 + sizeof(*request->channels) * n_channels
7238 + ie_len, GFP_KERNEL);
7239 if (!request)
7240 return ERR_PTR(-ENOMEM);
7241
7242 if (n_ssids)
7243 request->ssids = (void *)&request->channels[n_channels];
7244 request->n_ssids = n_ssids;
7245 if (ie_len) {
7246 if (n_ssids)
7247 request->ie = (void *)(request->ssids + n_ssids);
7248 else
7249 request->ie = (void *)(request->channels + n_channels);
7250 }
7251
7252 if (n_match_sets) {
7253 if (request->ie)
7254 request->match_sets = (void *)(request->ie + ie_len);
7255 else if (n_ssids)
7256 request->match_sets =
7257 (void *)(request->ssids + n_ssids);
7258 else
7259 request->match_sets =
7260 (void *)(request->channels + n_channels);
7261 }
7262 request->n_match_sets = n_match_sets;
7263
7264 if (n_match_sets)
7265 request->scan_plans = (void *)(request->match_sets +
7266 n_match_sets);
7267 else if (request->ie)
7268 request->scan_plans = (void *)(request->ie + ie_len);
7269 else if (n_ssids)
7270 request->scan_plans = (void *)(request->ssids + n_ssids);
7271 else
7272 request->scan_plans = (void *)(request->channels + n_channels);
7273
7274 request->n_scan_plans = n_plans;
7275
7276 i = 0;
7277 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7278 /* user specified, bail out if channel not found */
7279 nla_for_each_nested(attr,
7280 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7281 tmp) {
7282 struct ieee80211_channel *chan;
7283
7284 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7285
7286 if (!chan) {
7287 err = -EINVAL;
7288 goto out_free;
7289 }
7290
7291 /* ignore disabled channels */
7292 if (chan->flags & IEEE80211_CHAN_DISABLED)
7293 continue;
7294
7295 request->channels[i] = chan;
7296 i++;
7297 }
7298 } else {
7299 /* all channels */
7300 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7301 int j;
7302
7303 if (!wiphy->bands[band])
7304 continue;
7305 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7306 struct ieee80211_channel *chan;
7307
7308 chan = &wiphy->bands[band]->channels[j];
7309
7310 if (chan->flags & IEEE80211_CHAN_DISABLED)
7311 continue;
7312
7313 request->channels[i] = chan;
7314 i++;
7315 }
7316 }
7317 }
7318
7319 if (!i) {
7320 err = -EINVAL;
7321 goto out_free;
7322 }
7323
7324 request->n_channels = i;
7325
7326 i = 0;
7327 if (n_ssids) {
7328 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7329 tmp) {
7330 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7331 err = -EINVAL;
7332 goto out_free;
7333 }
7334 request->ssids[i].ssid_len = nla_len(attr);
7335 memcpy(request->ssids[i].ssid, nla_data(attr),
7336 nla_len(attr));
7337 i++;
7338 }
7339 }
7340
7341 i = 0;
7342 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7343 nla_for_each_nested(attr,
7344 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7345 tmp) {
7346 struct nlattr *ssid, *bssid, *rssi;
7347
7348 err = nla_parse_nested(tb,
7349 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7350 attr, nl80211_match_policy,
7351 NULL);
7352 if (err)
7353 goto out_free;
7354 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7355 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7356 if (ssid || bssid) {
7357 if (WARN_ON(i >= n_match_sets)) {
7358 /* this indicates a programming error,
7359 * the loop above should have verified
7360 * things properly
7361 */
7362 err = -EINVAL;
7363 goto out_free;
7364 }
7365
7366 if (ssid) {
7367 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7368 err = -EINVAL;
7369 goto out_free;
7370 }
7371 memcpy(request->match_sets[i].ssid.ssid,
7372 nla_data(ssid), nla_len(ssid));
7373 request->match_sets[i].ssid.ssid_len =
7374 nla_len(ssid);
7375 }
7376 if (bssid) {
7377 if (nla_len(bssid) != ETH_ALEN) {
7378 err = -EINVAL;
7379 goto out_free;
7380 }
7381 memcpy(request->match_sets[i].bssid,
7382 nla_data(bssid), ETH_ALEN);
7383 }
7384
7385 /* special attribute - old implementation w/a */
7386 request->match_sets[i].rssi_thold =
7387 default_match_rssi;
7388 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7389 if (rssi)
7390 request->match_sets[i].rssi_thold =
7391 nla_get_s32(rssi);
7392 }
7393 i++;
7394 }
7395
7396 /* there was no other matchset, so the RSSI one is alone */
7397 if (i == 0 && n_match_sets)
7398 request->match_sets[0].rssi_thold = default_match_rssi;
7399
7400 request->min_rssi_thold = INT_MAX;
7401 for (i = 0; i < n_match_sets; i++)
7402 request->min_rssi_thold =
7403 min(request->match_sets[i].rssi_thold,
7404 request->min_rssi_thold);
7405 } else {
7406 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7407 }
7408
7409 if (ie_len) {
7410 request->ie_len = ie_len;
7411 memcpy((void *)request->ie,
7412 nla_data(attrs[NL80211_ATTR_IE]),
7413 request->ie_len);
7414 }
7415
7416 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7417 if (err)
7418 goto out_free;
7419
7420 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7421 request->delay =
7422 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7423
7424 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7425 request->relative_rssi = nla_get_s8(
7426 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7427 request->relative_rssi_set = true;
7428 }
7429
7430 if (request->relative_rssi_set &&
7431 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7432 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7433
7434 rssi_adjust = nla_data(
7435 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7436 request->rssi_adjust.band = rssi_adjust->band;
7437 request->rssi_adjust.delta = rssi_adjust->delta;
7438 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7439 err = -EINVAL;
7440 goto out_free;
7441 }
7442 }
7443
7444 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7445 if (err)
7446 goto out_free;
7447
7448 request->scan_start = jiffies;
7449
7450 return request;
7451
7452 out_free:
7453 kfree(request);
7454 return ERR_PTR(err);
7455 }
7456
7457 static int nl80211_start_sched_scan(struct sk_buff *skb,
7458 struct genl_info *info)
7459 {
7460 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7461 struct net_device *dev = info->user_ptr[1];
7462 struct wireless_dev *wdev = dev->ieee80211_ptr;
7463 struct cfg80211_sched_scan_request *sched_scan_req;
7464 bool want_multi;
7465 int err;
7466
7467 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7468 return -EOPNOTSUPP;
7469
7470 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7471 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7472 if (err)
7473 return err;
7474
7475 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7476 info->attrs,
7477 rdev->wiphy.max_match_sets);
7478
7479 err = PTR_ERR_OR_ZERO(sched_scan_req);
7480 if (err)
7481 goto out_err;
7482
7483 /* leave request id zero for legacy request
7484 * or if driver does not support multi-scheduled scan
7485 */
7486 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7487 while (!sched_scan_req->reqid)
7488 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7489 }
7490
7491 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7492 if (err)
7493 goto out_free;
7494
7495 sched_scan_req->dev = dev;
7496 sched_scan_req->wiphy = &rdev->wiphy;
7497
7498 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7499 sched_scan_req->owner_nlportid = info->snd_portid;
7500
7501 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7502
7503 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7504 return 0;
7505
7506 out_free:
7507 kfree(sched_scan_req);
7508 out_err:
7509 return err;
7510 }
7511
7512 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7513 struct genl_info *info)
7514 {
7515 struct cfg80211_sched_scan_request *req;
7516 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7517 u64 cookie;
7518
7519 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7520 return -EOPNOTSUPP;
7521
7522 if (info->attrs[NL80211_ATTR_COOKIE]) {
7523 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7524 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7525 }
7526
7527 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7528 struct cfg80211_sched_scan_request,
7529 list);
7530 if (!req || req->reqid ||
7531 (req->owner_nlportid &&
7532 req->owner_nlportid != info->snd_portid))
7533 return -ENOENT;
7534
7535 return cfg80211_stop_sched_scan_req(rdev, req, false);
7536 }
7537
7538 static int nl80211_start_radar_detection(struct sk_buff *skb,
7539 struct genl_info *info)
7540 {
7541 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7542 struct net_device *dev = info->user_ptr[1];
7543 struct wireless_dev *wdev = dev->ieee80211_ptr;
7544 struct cfg80211_chan_def chandef;
7545 enum nl80211_dfs_regions dfs_region;
7546 unsigned int cac_time_ms;
7547 int err;
7548
7549 dfs_region = reg_get_dfs_region(wdev->wiphy);
7550 if (dfs_region == NL80211_DFS_UNSET)
7551 return -EINVAL;
7552
7553 err = nl80211_parse_chandef(rdev, info, &chandef);
7554 if (err)
7555 return err;
7556
7557 if (netif_carrier_ok(dev))
7558 return -EBUSY;
7559
7560 if (wdev->cac_started)
7561 return -EBUSY;
7562
7563 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7564 wdev->iftype);
7565 if (err < 0)
7566 return err;
7567
7568 if (err == 0)
7569 return -EINVAL;
7570
7571 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7572 return -EINVAL;
7573
7574 if (!rdev->ops->start_radar_detection)
7575 return -EOPNOTSUPP;
7576
7577 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7578 if (WARN_ON(!cac_time_ms))
7579 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7580
7581 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7582 if (!err) {
7583 wdev->chandef = chandef;
7584 wdev->cac_started = true;
7585 wdev->cac_start_time = jiffies;
7586 wdev->cac_time_ms = cac_time_ms;
7587 }
7588 return err;
7589 }
7590
7591 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7592 {
7593 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7594 struct net_device *dev = info->user_ptr[1];
7595 struct wireless_dev *wdev = dev->ieee80211_ptr;
7596 struct cfg80211_csa_settings params;
7597 /* csa_attrs is defined static to avoid waste of stack size - this
7598 * function is called under RTNL lock, so this should not be a problem.
7599 */
7600 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7601 int err;
7602 bool need_new_beacon = false;
7603 bool need_handle_dfs_flag = true;
7604 int len, i;
7605 u32 cs_count;
7606
7607 if (!rdev->ops->channel_switch ||
7608 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7609 return -EOPNOTSUPP;
7610
7611 switch (dev->ieee80211_ptr->iftype) {
7612 case NL80211_IFTYPE_AP:
7613 case NL80211_IFTYPE_P2P_GO:
7614 need_new_beacon = true;
7615 /* For all modes except AP the handle_dfs flag needs to be
7616 * supplied to tell the kernel that userspace will handle radar
7617 * events when they happen. Otherwise a switch to a channel
7618 * requiring DFS will be rejected.
7619 */
7620 need_handle_dfs_flag = false;
7621
7622 /* useless if AP is not running */
7623 if (!wdev->beacon_interval)
7624 return -ENOTCONN;
7625 break;
7626 case NL80211_IFTYPE_ADHOC:
7627 if (!wdev->ssid_len)
7628 return -ENOTCONN;
7629 break;
7630 case NL80211_IFTYPE_MESH_POINT:
7631 if (!wdev->mesh_id_len)
7632 return -ENOTCONN;
7633 break;
7634 default:
7635 return -EOPNOTSUPP;
7636 }
7637
7638 memset(&params, 0, sizeof(params));
7639
7640 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7641 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7642 return -EINVAL;
7643
7644 /* only important for AP, IBSS and mesh create IEs internally */
7645 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7646 return -EINVAL;
7647
7648 /* Even though the attribute is u32, the specification says
7649 * u8, so let's make sure we don't overflow.
7650 */
7651 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7652 if (cs_count > 255)
7653 return -EINVAL;
7654
7655 params.count = cs_count;
7656
7657 if (!need_new_beacon)
7658 goto skip_beacons;
7659
7660 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7661 if (err)
7662 return err;
7663
7664 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7665 info->attrs[NL80211_ATTR_CSA_IES],
7666 nl80211_policy, info->extack);
7667 if (err)
7668 return err;
7669
7670 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7671 if (err)
7672 return err;
7673
7674 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7675 return -EINVAL;
7676
7677 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7678 if (!len || (len % sizeof(u16)))
7679 return -EINVAL;
7680
7681 params.n_counter_offsets_beacon = len / sizeof(u16);
7682 if (rdev->wiphy.max_num_csa_counters &&
7683 (params.n_counter_offsets_beacon >
7684 rdev->wiphy.max_num_csa_counters))
7685 return -EINVAL;
7686
7687 params.counter_offsets_beacon =
7688 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7689
7690 /* sanity checks - counters should fit and be the same */
7691 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7692 u16 offset = params.counter_offsets_beacon[i];
7693
7694 if (offset >= params.beacon_csa.tail_len)
7695 return -EINVAL;
7696
7697 if (params.beacon_csa.tail[offset] != params.count)
7698 return -EINVAL;
7699 }
7700
7701 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7702 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7703 if (!len || (len % sizeof(u16)))
7704 return -EINVAL;
7705
7706 params.n_counter_offsets_presp = len / sizeof(u16);
7707 if (rdev->wiphy.max_num_csa_counters &&
7708 (params.n_counter_offsets_presp >
7709 rdev->wiphy.max_num_csa_counters))
7710 return -EINVAL;
7711
7712 params.counter_offsets_presp =
7713 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7714
7715 /* sanity checks - counters should fit and be the same */
7716 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7717 u16 offset = params.counter_offsets_presp[i];
7718
7719 if (offset >= params.beacon_csa.probe_resp_len)
7720 return -EINVAL;
7721
7722 if (params.beacon_csa.probe_resp[offset] !=
7723 params.count)
7724 return -EINVAL;
7725 }
7726 }
7727
7728 skip_beacons:
7729 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7730 if (err)
7731 return err;
7732
7733 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7734 wdev->iftype))
7735 return -EINVAL;
7736
7737 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7738 &params.chandef,
7739 wdev->iftype);
7740 if (err < 0)
7741 return err;
7742
7743 if (err > 0) {
7744 params.radar_required = true;
7745 if (need_handle_dfs_flag &&
7746 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7747 return -EINVAL;
7748 }
7749 }
7750
7751 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7752 params.block_tx = true;
7753
7754 wdev_lock(wdev);
7755 err = rdev_channel_switch(rdev, dev, &params);
7756 wdev_unlock(wdev);
7757
7758 return err;
7759 }
7760
7761 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7762 u32 seq, int flags,
7763 struct cfg80211_registered_device *rdev,
7764 struct wireless_dev *wdev,
7765 struct cfg80211_internal_bss *intbss)
7766 {
7767 struct cfg80211_bss *res = &intbss->pub;
7768 const struct cfg80211_bss_ies *ies;
7769 void *hdr;
7770 struct nlattr *bss;
7771
7772 ASSERT_WDEV_LOCK(wdev);
7773
7774 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7775 NL80211_CMD_NEW_SCAN_RESULTS);
7776 if (!hdr)
7777 return -1;
7778
7779 genl_dump_check_consistent(cb, hdr);
7780
7781 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7782 goto nla_put_failure;
7783 if (wdev->netdev &&
7784 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7785 goto nla_put_failure;
7786 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7787 NL80211_ATTR_PAD))
7788 goto nla_put_failure;
7789
7790 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7791 if (!bss)
7792 goto nla_put_failure;
7793 if ((!is_zero_ether_addr(res->bssid) &&
7794 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7795 goto nla_put_failure;
7796
7797 rcu_read_lock();
7798 /* indicate whether we have probe response data or not */
7799 if (rcu_access_pointer(res->proberesp_ies) &&
7800 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7801 goto fail_unlock_rcu;
7802
7803 /* this pointer prefers to be pointed to probe response data
7804 * but is always valid
7805 */
7806 ies = rcu_dereference(res->ies);
7807 if (ies) {
7808 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7809 NL80211_BSS_PAD))
7810 goto fail_unlock_rcu;
7811 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7812 ies->len, ies->data))
7813 goto fail_unlock_rcu;
7814 }
7815
7816 /* and this pointer is always (unless driver didn't know) beacon data */
7817 ies = rcu_dereference(res->beacon_ies);
7818 if (ies && ies->from_beacon) {
7819 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7820 NL80211_BSS_PAD))
7821 goto fail_unlock_rcu;
7822 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7823 ies->len, ies->data))
7824 goto fail_unlock_rcu;
7825 }
7826 rcu_read_unlock();
7827
7828 if (res->beacon_interval &&
7829 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7830 goto nla_put_failure;
7831 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7832 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7833 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7834 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7835 jiffies_to_msecs(jiffies - intbss->ts)))
7836 goto nla_put_failure;
7837
7838 if (intbss->parent_tsf &&
7839 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7840 intbss->parent_tsf, NL80211_BSS_PAD) ||
7841 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7842 intbss->parent_bssid)))
7843 goto nla_put_failure;
7844
7845 if (intbss->ts_boottime &&
7846 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7847 intbss->ts_boottime, NL80211_BSS_PAD))
7848 goto nla_put_failure;
7849
7850 if (!nl80211_put_signal(msg, intbss->pub.chains,
7851 intbss->pub.chain_signal,
7852 NL80211_BSS_CHAIN_SIGNAL))
7853 goto nla_put_failure;
7854
7855 switch (rdev->wiphy.signal_type) {
7856 case CFG80211_SIGNAL_TYPE_MBM:
7857 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7858 goto nla_put_failure;
7859 break;
7860 case CFG80211_SIGNAL_TYPE_UNSPEC:
7861 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7862 goto nla_put_failure;
7863 break;
7864 default:
7865 break;
7866 }
7867
7868 switch (wdev->iftype) {
7869 case NL80211_IFTYPE_P2P_CLIENT:
7870 case NL80211_IFTYPE_STATION:
7871 if (intbss == wdev->current_bss &&
7872 nla_put_u32(msg, NL80211_BSS_STATUS,
7873 NL80211_BSS_STATUS_ASSOCIATED))
7874 goto nla_put_failure;
7875 break;
7876 case NL80211_IFTYPE_ADHOC:
7877 if (intbss == wdev->current_bss &&
7878 nla_put_u32(msg, NL80211_BSS_STATUS,
7879 NL80211_BSS_STATUS_IBSS_JOINED))
7880 goto nla_put_failure;
7881 break;
7882 default:
7883 break;
7884 }
7885
7886 nla_nest_end(msg, bss);
7887
7888 genlmsg_end(msg, hdr);
7889 return 0;
7890
7891 fail_unlock_rcu:
7892 rcu_read_unlock();
7893 nla_put_failure:
7894 genlmsg_cancel(msg, hdr);
7895 return -EMSGSIZE;
7896 }
7897
7898 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7899 {
7900 struct cfg80211_registered_device *rdev;
7901 struct cfg80211_internal_bss *scan;
7902 struct wireless_dev *wdev;
7903 int start = cb->args[2], idx = 0;
7904 int err;
7905
7906 rtnl_lock();
7907 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7908 if (err) {
7909 rtnl_unlock();
7910 return err;
7911 }
7912
7913 wdev_lock(wdev);
7914 spin_lock_bh(&rdev->bss_lock);
7915 cfg80211_bss_expire(rdev);
7916
7917 cb->seq = rdev->bss_generation;
7918
7919 list_for_each_entry(scan, &rdev->bss_list, list) {
7920 if (++idx <= start)
7921 continue;
7922 if (nl80211_send_bss(skb, cb,
7923 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7924 rdev, wdev, scan) < 0) {
7925 idx--;
7926 break;
7927 }
7928 }
7929
7930 spin_unlock_bh(&rdev->bss_lock);
7931 wdev_unlock(wdev);
7932
7933 cb->args[2] = idx;
7934 rtnl_unlock();
7935
7936 return skb->len;
7937 }
7938
7939 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7940 int flags, struct net_device *dev,
7941 bool allow_radio_stats,
7942 struct survey_info *survey)
7943 {
7944 void *hdr;
7945 struct nlattr *infoattr;
7946
7947 /* skip radio stats if userspace didn't request them */
7948 if (!survey->channel && !allow_radio_stats)
7949 return 0;
7950
7951 hdr = nl80211hdr_put(msg, portid, seq, flags,
7952 NL80211_CMD_NEW_SURVEY_RESULTS);
7953 if (!hdr)
7954 return -ENOMEM;
7955
7956 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7957 goto nla_put_failure;
7958
7959 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7960 if (!infoattr)
7961 goto nla_put_failure;
7962
7963 if (survey->channel &&
7964 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7965 survey->channel->center_freq))
7966 goto nla_put_failure;
7967
7968 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7969 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7970 goto nla_put_failure;
7971 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7972 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7973 goto nla_put_failure;
7974 if ((survey->filled & SURVEY_INFO_TIME) &&
7975 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7976 survey->time, NL80211_SURVEY_INFO_PAD))
7977 goto nla_put_failure;
7978 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7979 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7980 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7981 goto nla_put_failure;
7982 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7983 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7984 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7985 goto nla_put_failure;
7986 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7987 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7988 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7989 goto nla_put_failure;
7990 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7991 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7992 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7993 goto nla_put_failure;
7994 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7995 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7996 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7997 goto nla_put_failure;
7998
7999 nla_nest_end(msg, infoattr);
8000
8001 genlmsg_end(msg, hdr);
8002 return 0;
8003
8004 nla_put_failure:
8005 genlmsg_cancel(msg, hdr);
8006 return -EMSGSIZE;
8007 }
8008
8009 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8010 {
8011 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8012 struct survey_info survey;
8013 struct cfg80211_registered_device *rdev;
8014 struct wireless_dev *wdev;
8015 int survey_idx = cb->args[2];
8016 int res;
8017 bool radio_stats;
8018
8019 rtnl_lock();
8020 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
8021 if (res)
8022 goto out_err;
8023
8024 /* prepare_wdev_dump parsed the attributes */
8025 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8026
8027 if (!wdev->netdev) {
8028 res = -EINVAL;
8029 goto out_err;
8030 }
8031
8032 if (!rdev->ops->dump_survey) {
8033 res = -EOPNOTSUPP;
8034 goto out_err;
8035 }
8036
8037 while (1) {
8038 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8039 if (res == -ENOENT)
8040 break;
8041 if (res)
8042 goto out_err;
8043
8044 /* don't send disabled channels, but do send non-channel data */
8045 if (survey.channel &&
8046 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8047 survey_idx++;
8048 continue;
8049 }
8050
8051 if (nl80211_send_survey(skb,
8052 NETLINK_CB(cb->skb).portid,
8053 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8054 wdev->netdev, radio_stats, &survey) < 0)
8055 goto out;
8056 survey_idx++;
8057 }
8058
8059 out:
8060 cb->args[2] = survey_idx;
8061 res = skb->len;
8062 out_err:
8063 rtnl_unlock();
8064 return res;
8065 }
8066
8067 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8068 {
8069 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8070 NL80211_WPA_VERSION_2));
8071 }
8072
8073 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8074 {
8075 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8076 struct net_device *dev = info->user_ptr[1];
8077 struct ieee80211_channel *chan;
8078 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8079 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8080 enum nl80211_auth_type auth_type;
8081 struct key_parse key;
8082 bool local_state_change;
8083
8084 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8085 return -EINVAL;
8086
8087 if (!info->attrs[NL80211_ATTR_MAC])
8088 return -EINVAL;
8089
8090 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8091 return -EINVAL;
8092
8093 if (!info->attrs[NL80211_ATTR_SSID])
8094 return -EINVAL;
8095
8096 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8097 return -EINVAL;
8098
8099 err = nl80211_parse_key(info, &key);
8100 if (err)
8101 return err;
8102
8103 if (key.idx >= 0) {
8104 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8105 return -EINVAL;
8106 if (!key.p.key || !key.p.key_len)
8107 return -EINVAL;
8108 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8109 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8110 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8111 key.p.key_len != WLAN_KEY_LEN_WEP104))
8112 return -EINVAL;
8113 if (key.idx > 3)
8114 return -EINVAL;
8115 } else {
8116 key.p.key_len = 0;
8117 key.p.key = NULL;
8118 }
8119
8120 if (key.idx >= 0) {
8121 int i;
8122 bool ok = false;
8123
8124 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8125 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8126 ok = true;
8127 break;
8128 }
8129 }
8130 if (!ok)
8131 return -EINVAL;
8132 }
8133
8134 if (!rdev->ops->auth)
8135 return -EOPNOTSUPP;
8136
8137 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8138 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8139 return -EOPNOTSUPP;
8140
8141 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8142 chan = nl80211_get_valid_chan(&rdev->wiphy,
8143 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8144 if (!chan)
8145 return -EINVAL;
8146
8147 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8148 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8149
8150 if (info->attrs[NL80211_ATTR_IE]) {
8151 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8152 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8153 }
8154
8155 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8156 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8157 return -EINVAL;
8158
8159 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8160 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8161 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8162 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8163 !info->attrs[NL80211_ATTR_AUTH_DATA])
8164 return -EINVAL;
8165
8166 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8167 if (auth_type != NL80211_AUTHTYPE_SAE &&
8168 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8169 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8170 auth_type != NL80211_AUTHTYPE_FILS_PK)
8171 return -EINVAL;
8172 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8173 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8174 /* need to include at least Auth Transaction and Status Code */
8175 if (auth_data_len < 4)
8176 return -EINVAL;
8177 }
8178
8179 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8180
8181 /*
8182 * Since we no longer track auth state, ignore
8183 * requests to only change local state.
8184 */
8185 if (local_state_change)
8186 return 0;
8187
8188 wdev_lock(dev->ieee80211_ptr);
8189 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8190 ssid, ssid_len, ie, ie_len,
8191 key.p.key, key.p.key_len, key.idx,
8192 auth_data, auth_data_len);
8193 wdev_unlock(dev->ieee80211_ptr);
8194 return err;
8195 }
8196
8197 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8198 struct genl_info *info,
8199 struct cfg80211_crypto_settings *settings,
8200 int cipher_limit)
8201 {
8202 memset(settings, 0, sizeof(*settings));
8203
8204 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8205
8206 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8207 u16 proto;
8208
8209 proto = nla_get_u16(
8210 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8211 settings->control_port_ethertype = cpu_to_be16(proto);
8212 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8213 proto != ETH_P_PAE)
8214 return -EINVAL;
8215 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8216 settings->control_port_no_encrypt = true;
8217 } else
8218 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8219
8220 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8221 void *data;
8222 int len, i;
8223
8224 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8225 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8226 settings->n_ciphers_pairwise = len / sizeof(u32);
8227
8228 if (len % sizeof(u32))
8229 return -EINVAL;
8230
8231 if (settings->n_ciphers_pairwise > cipher_limit)
8232 return -EINVAL;
8233
8234 memcpy(settings->ciphers_pairwise, data, len);
8235
8236 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8237 if (!cfg80211_supported_cipher_suite(
8238 &rdev->wiphy,
8239 settings->ciphers_pairwise[i]))
8240 return -EINVAL;
8241 }
8242
8243 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8244 settings->cipher_group =
8245 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8246 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8247 settings->cipher_group))
8248 return -EINVAL;
8249 }
8250
8251 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8252 settings->wpa_versions =
8253 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8254 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8255 return -EINVAL;
8256 }
8257
8258 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8259 void *data;
8260 int len;
8261
8262 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8263 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8264 settings->n_akm_suites = len / sizeof(u32);
8265
8266 if (len % sizeof(u32))
8267 return -EINVAL;
8268
8269 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8270 return -EINVAL;
8271
8272 memcpy(settings->akm_suites, data, len);
8273 }
8274
8275 if (info->attrs[NL80211_ATTR_PMK]) {
8276 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8277 return -EINVAL;
8278 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8279 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8280 return -EINVAL;
8281 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8282 }
8283
8284 return 0;
8285 }
8286
8287 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8288 {
8289 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8290 struct net_device *dev = info->user_ptr[1];
8291 struct ieee80211_channel *chan;
8292 struct cfg80211_assoc_request req = {};
8293 const u8 *bssid, *ssid;
8294 int err, ssid_len = 0;
8295
8296 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8297 return -EINVAL;
8298
8299 if (!info->attrs[NL80211_ATTR_MAC] ||
8300 !info->attrs[NL80211_ATTR_SSID] ||
8301 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8302 return -EINVAL;
8303
8304 if (!rdev->ops->assoc)
8305 return -EOPNOTSUPP;
8306
8307 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8308 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8309 return -EOPNOTSUPP;
8310
8311 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8312
8313 chan = nl80211_get_valid_chan(&rdev->wiphy,
8314 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8315 if (!chan)
8316 return -EINVAL;
8317
8318 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8319 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8320
8321 if (info->attrs[NL80211_ATTR_IE]) {
8322 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8323 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8324 }
8325
8326 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8327 enum nl80211_mfp mfp =
8328 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8329 if (mfp == NL80211_MFP_REQUIRED)
8330 req.use_mfp = true;
8331 else if (mfp != NL80211_MFP_NO)
8332 return -EINVAL;
8333 }
8334
8335 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8336 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8337
8338 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8339 req.flags |= ASSOC_REQ_DISABLE_HT;
8340
8341 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8342 memcpy(&req.ht_capa_mask,
8343 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8344 sizeof(req.ht_capa_mask));
8345
8346 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8347 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8348 return -EINVAL;
8349 memcpy(&req.ht_capa,
8350 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8351 sizeof(req.ht_capa));
8352 }
8353
8354 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8355 req.flags |= ASSOC_REQ_DISABLE_VHT;
8356
8357 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8358 memcpy(&req.vht_capa_mask,
8359 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8360 sizeof(req.vht_capa_mask));
8361
8362 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8363 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8364 return -EINVAL;
8365 memcpy(&req.vht_capa,
8366 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8367 sizeof(req.vht_capa));
8368 }
8369
8370 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8371 if (!((rdev->wiphy.features &
8372 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8373 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8374 !wiphy_ext_feature_isset(&rdev->wiphy,
8375 NL80211_EXT_FEATURE_RRM))
8376 return -EINVAL;
8377 req.flags |= ASSOC_REQ_USE_RRM;
8378 }
8379
8380 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8381 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8382 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8383 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8384 return -EINVAL;
8385 req.fils_nonces =
8386 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8387 }
8388
8389 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8390 if (!err) {
8391 wdev_lock(dev->ieee80211_ptr);
8392
8393 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8394 ssid, ssid_len, &req);
8395
8396 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8397 dev->ieee80211_ptr->conn_owner_nlportid =
8398 info->snd_portid;
8399 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8400 bssid, ETH_ALEN);
8401 }
8402
8403 wdev_unlock(dev->ieee80211_ptr);
8404 }
8405
8406 return err;
8407 }
8408
8409 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8410 {
8411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8412 struct net_device *dev = info->user_ptr[1];
8413 const u8 *ie = NULL, *bssid;
8414 int ie_len = 0, err;
8415 u16 reason_code;
8416 bool local_state_change;
8417
8418 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8419 return -EINVAL;
8420
8421 if (!info->attrs[NL80211_ATTR_MAC])
8422 return -EINVAL;
8423
8424 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8425 return -EINVAL;
8426
8427 if (!rdev->ops->deauth)
8428 return -EOPNOTSUPP;
8429
8430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8432 return -EOPNOTSUPP;
8433
8434 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8435
8436 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8437 if (reason_code == 0) {
8438 /* Reason Code 0 is reserved */
8439 return -EINVAL;
8440 }
8441
8442 if (info->attrs[NL80211_ATTR_IE]) {
8443 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8444 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8445 }
8446
8447 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8448
8449 wdev_lock(dev->ieee80211_ptr);
8450 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8451 local_state_change);
8452 wdev_unlock(dev->ieee80211_ptr);
8453 return err;
8454 }
8455
8456 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8457 {
8458 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8459 struct net_device *dev = info->user_ptr[1];
8460 const u8 *ie = NULL, *bssid;
8461 int ie_len = 0, err;
8462 u16 reason_code;
8463 bool local_state_change;
8464
8465 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8466 return -EINVAL;
8467
8468 if (!info->attrs[NL80211_ATTR_MAC])
8469 return -EINVAL;
8470
8471 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8472 return -EINVAL;
8473
8474 if (!rdev->ops->disassoc)
8475 return -EOPNOTSUPP;
8476
8477 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8478 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8479 return -EOPNOTSUPP;
8480
8481 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8482
8483 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8484 if (reason_code == 0) {
8485 /* Reason Code 0 is reserved */
8486 return -EINVAL;
8487 }
8488
8489 if (info->attrs[NL80211_ATTR_IE]) {
8490 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8491 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8492 }
8493
8494 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8495
8496 wdev_lock(dev->ieee80211_ptr);
8497 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8498 local_state_change);
8499 wdev_unlock(dev->ieee80211_ptr);
8500 return err;
8501 }
8502
8503 static bool
8504 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8505 int mcast_rate[NUM_NL80211_BANDS],
8506 int rateval)
8507 {
8508 struct wiphy *wiphy = &rdev->wiphy;
8509 bool found = false;
8510 int band, i;
8511
8512 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8513 struct ieee80211_supported_band *sband;
8514
8515 sband = wiphy->bands[band];
8516 if (!sband)
8517 continue;
8518
8519 for (i = 0; i < sband->n_bitrates; i++) {
8520 if (sband->bitrates[i].bitrate == rateval) {
8521 mcast_rate[band] = i + 1;
8522 found = true;
8523 break;
8524 }
8525 }
8526 }
8527
8528 return found;
8529 }
8530
8531 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8532 {
8533 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8534 struct net_device *dev = info->user_ptr[1];
8535 struct cfg80211_ibss_params ibss;
8536 struct wiphy *wiphy;
8537 struct cfg80211_cached_keys *connkeys = NULL;
8538 int err;
8539
8540 memset(&ibss, 0, sizeof(ibss));
8541
8542 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8543 return -EINVAL;
8544
8545 if (!info->attrs[NL80211_ATTR_SSID] ||
8546 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8547 return -EINVAL;
8548
8549 ibss.beacon_interval = 100;
8550
8551 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8552 ibss.beacon_interval =
8553 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8554
8555 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8556 ibss.beacon_interval);
8557 if (err)
8558 return err;
8559
8560 if (!rdev->ops->join_ibss)
8561 return -EOPNOTSUPP;
8562
8563 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8564 return -EOPNOTSUPP;
8565
8566 wiphy = &rdev->wiphy;
8567
8568 if (info->attrs[NL80211_ATTR_MAC]) {
8569 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8570
8571 if (!is_valid_ether_addr(ibss.bssid))
8572 return -EINVAL;
8573 }
8574 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8575 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8576
8577 if (info->attrs[NL80211_ATTR_IE]) {
8578 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8579 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8580 }
8581
8582 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8583 if (err)
8584 return err;
8585
8586 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8587 NL80211_IFTYPE_ADHOC))
8588 return -EINVAL;
8589
8590 switch (ibss.chandef.width) {
8591 case NL80211_CHAN_WIDTH_5:
8592 case NL80211_CHAN_WIDTH_10:
8593 case NL80211_CHAN_WIDTH_20_NOHT:
8594 break;
8595 case NL80211_CHAN_WIDTH_20:
8596 case NL80211_CHAN_WIDTH_40:
8597 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8598 return -EINVAL;
8599 break;
8600 case NL80211_CHAN_WIDTH_80:
8601 case NL80211_CHAN_WIDTH_80P80:
8602 case NL80211_CHAN_WIDTH_160:
8603 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8604 return -EINVAL;
8605 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8606 NL80211_EXT_FEATURE_VHT_IBSS))
8607 return -EINVAL;
8608 break;
8609 default:
8610 return -EINVAL;
8611 }
8612
8613 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8614 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8615
8616 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8617 u8 *rates =
8618 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8619 int n_rates =
8620 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8621 struct ieee80211_supported_band *sband =
8622 wiphy->bands[ibss.chandef.chan->band];
8623
8624 err = ieee80211_get_ratemask(sband, rates, n_rates,
8625 &ibss.basic_rates);
8626 if (err)
8627 return err;
8628 }
8629
8630 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8631 memcpy(&ibss.ht_capa_mask,
8632 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8633 sizeof(ibss.ht_capa_mask));
8634
8635 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8636 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8637 return -EINVAL;
8638 memcpy(&ibss.ht_capa,
8639 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8640 sizeof(ibss.ht_capa));
8641 }
8642
8643 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8644 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8645 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8646 return -EINVAL;
8647
8648 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8649 bool no_ht = false;
8650
8651 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
8652 if (IS_ERR(connkeys))
8653 return PTR_ERR(connkeys);
8654
8655 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8656 no_ht) {
8657 kzfree(connkeys);
8658 return -EINVAL;
8659 }
8660 }
8661
8662 ibss.control_port =
8663 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8664
8665 ibss.userspace_handles_dfs =
8666 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8667
8668 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8669 if (err)
8670 kzfree(connkeys);
8671 return err;
8672 }
8673
8674 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8675 {
8676 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8677 struct net_device *dev = info->user_ptr[1];
8678
8679 if (!rdev->ops->leave_ibss)
8680 return -EOPNOTSUPP;
8681
8682 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8683 return -EOPNOTSUPP;
8684
8685 return cfg80211_leave_ibss(rdev, dev, false);
8686 }
8687
8688 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8689 {
8690 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8691 struct net_device *dev = info->user_ptr[1];
8692 int mcast_rate[NUM_NL80211_BANDS];
8693 u32 nla_rate;
8694 int err;
8695
8696 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8697 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8698 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8699 return -EOPNOTSUPP;
8700
8701 if (!rdev->ops->set_mcast_rate)
8702 return -EOPNOTSUPP;
8703
8704 memset(mcast_rate, 0, sizeof(mcast_rate));
8705
8706 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8707 return -EINVAL;
8708
8709 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8710 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8711 return -EINVAL;
8712
8713 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8714
8715 return err;
8716 }
8717
8718 static struct sk_buff *
8719 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8720 struct wireless_dev *wdev, int approxlen,
8721 u32 portid, u32 seq, enum nl80211_commands cmd,
8722 enum nl80211_attrs attr,
8723 const struct nl80211_vendor_cmd_info *info,
8724 gfp_t gfp)
8725 {
8726 struct sk_buff *skb;
8727 void *hdr;
8728 struct nlattr *data;
8729
8730 skb = nlmsg_new(approxlen + 100, gfp);
8731 if (!skb)
8732 return NULL;
8733
8734 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8735 if (!hdr) {
8736 kfree_skb(skb);
8737 return NULL;
8738 }
8739
8740 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8741 goto nla_put_failure;
8742
8743 if (info) {
8744 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8745 info->vendor_id))
8746 goto nla_put_failure;
8747 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8748 info->subcmd))
8749 goto nla_put_failure;
8750 }
8751
8752 if (wdev) {
8753 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8754 wdev_id(wdev), NL80211_ATTR_PAD))
8755 goto nla_put_failure;
8756 if (wdev->netdev &&
8757 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8758 wdev->netdev->ifindex))
8759 goto nla_put_failure;
8760 }
8761
8762 data = nla_nest_start(skb, attr);
8763 if (!data)
8764 goto nla_put_failure;
8765
8766 ((void **)skb->cb)[0] = rdev;
8767 ((void **)skb->cb)[1] = hdr;
8768 ((void **)skb->cb)[2] = data;
8769
8770 return skb;
8771
8772 nla_put_failure:
8773 kfree_skb(skb);
8774 return NULL;
8775 }
8776
8777 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8778 struct wireless_dev *wdev,
8779 enum nl80211_commands cmd,
8780 enum nl80211_attrs attr,
8781 int vendor_event_idx,
8782 int approxlen, gfp_t gfp)
8783 {
8784 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8785 const struct nl80211_vendor_cmd_info *info;
8786
8787 switch (cmd) {
8788 case NL80211_CMD_TESTMODE:
8789 if (WARN_ON(vendor_event_idx != -1))
8790 return NULL;
8791 info = NULL;
8792 break;
8793 case NL80211_CMD_VENDOR:
8794 if (WARN_ON(vendor_event_idx < 0 ||
8795 vendor_event_idx >= wiphy->n_vendor_events))
8796 return NULL;
8797 info = &wiphy->vendor_events[vendor_event_idx];
8798 break;
8799 default:
8800 WARN_ON(1);
8801 return NULL;
8802 }
8803
8804 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8805 cmd, attr, info, gfp);
8806 }
8807 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8808
8809 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8810 {
8811 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8812 void *hdr = ((void **)skb->cb)[1];
8813 struct nlattr *data = ((void **)skb->cb)[2];
8814 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8815
8816 /* clear CB data for netlink core to own from now on */
8817 memset(skb->cb, 0, sizeof(skb->cb));
8818
8819 nla_nest_end(skb, data);
8820 genlmsg_end(skb, hdr);
8821
8822 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8823 mcgrp = NL80211_MCGRP_VENDOR;
8824
8825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8826 mcgrp, gfp);
8827 }
8828 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8829
8830 #ifdef CONFIG_NL80211_TESTMODE
8831 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8832 {
8833 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8834 struct wireless_dev *wdev =
8835 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8836 int err;
8837
8838 if (!rdev->ops->testmode_cmd)
8839 return -EOPNOTSUPP;
8840
8841 if (IS_ERR(wdev)) {
8842 err = PTR_ERR(wdev);
8843 if (err != -EINVAL)
8844 return err;
8845 wdev = NULL;
8846 } else if (wdev->wiphy != &rdev->wiphy) {
8847 return -EINVAL;
8848 }
8849
8850 if (!info->attrs[NL80211_ATTR_TESTDATA])
8851 return -EINVAL;
8852
8853 rdev->cur_cmd_info = info;
8854 err = rdev_testmode_cmd(rdev, wdev,
8855 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8856 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8857 rdev->cur_cmd_info = NULL;
8858
8859 return err;
8860 }
8861
8862 static int nl80211_testmode_dump(struct sk_buff *skb,
8863 struct netlink_callback *cb)
8864 {
8865 struct cfg80211_registered_device *rdev;
8866 int err;
8867 long phy_idx;
8868 void *data = NULL;
8869 int data_len = 0;
8870
8871 rtnl_lock();
8872
8873 if (cb->args[0]) {
8874 /*
8875 * 0 is a valid index, but not valid for args[0],
8876 * so we need to offset by 1.
8877 */
8878 phy_idx = cb->args[0] - 1;
8879
8880 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8881 if (!rdev) {
8882 err = -ENOENT;
8883 goto out_err;
8884 }
8885 } else {
8886 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8887
8888 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8889 attrbuf, nl80211_fam.maxattr,
8890 nl80211_policy, NULL);
8891 if (err)
8892 goto out_err;
8893
8894 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8895 if (IS_ERR(rdev)) {
8896 err = PTR_ERR(rdev);
8897 goto out_err;
8898 }
8899 phy_idx = rdev->wiphy_idx;
8900
8901 if (attrbuf[NL80211_ATTR_TESTDATA])
8902 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8903 }
8904
8905 if (cb->args[1]) {
8906 data = nla_data((void *)cb->args[1]);
8907 data_len = nla_len((void *)cb->args[1]);
8908 }
8909
8910 if (!rdev->ops->testmode_dump) {
8911 err = -EOPNOTSUPP;
8912 goto out_err;
8913 }
8914
8915 while (1) {
8916 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8917 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8918 NL80211_CMD_TESTMODE);
8919 struct nlattr *tmdata;
8920
8921 if (!hdr)
8922 break;
8923
8924 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8925 genlmsg_cancel(skb, hdr);
8926 break;
8927 }
8928
8929 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8930 if (!tmdata) {
8931 genlmsg_cancel(skb, hdr);
8932 break;
8933 }
8934 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8935 nla_nest_end(skb, tmdata);
8936
8937 if (err == -ENOBUFS || err == -ENOENT) {
8938 genlmsg_cancel(skb, hdr);
8939 break;
8940 } else if (err) {
8941 genlmsg_cancel(skb, hdr);
8942 goto out_err;
8943 }
8944
8945 genlmsg_end(skb, hdr);
8946 }
8947
8948 err = skb->len;
8949 /* see above */
8950 cb->args[0] = phy_idx + 1;
8951 out_err:
8952 rtnl_unlock();
8953 return err;
8954 }
8955 #endif
8956
8957 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8958 {
8959 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8960 struct net_device *dev = info->user_ptr[1];
8961 struct cfg80211_connect_params connect;
8962 struct wiphy *wiphy;
8963 struct cfg80211_cached_keys *connkeys = NULL;
8964 int err;
8965
8966 memset(&connect, 0, sizeof(connect));
8967
8968 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8969 return -EINVAL;
8970
8971 if (!info->attrs[NL80211_ATTR_SSID] ||
8972 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8973 return -EINVAL;
8974
8975 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8976 connect.auth_type =
8977 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8978 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8979 NL80211_CMD_CONNECT))
8980 return -EINVAL;
8981 } else
8982 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8983
8984 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8985
8986 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8987 !wiphy_ext_feature_isset(&rdev->wiphy,
8988 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8989 return -EINVAL;
8990 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8991
8992 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8993 NL80211_MAX_NR_CIPHER_SUITES);
8994 if (err)
8995 return err;
8996
8997 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8998 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8999 return -EOPNOTSUPP;
9000
9001 wiphy = &rdev->wiphy;
9002
9003 connect.bg_scan_period = -1;
9004 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9005 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9006 connect.bg_scan_period =
9007 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9008 }
9009
9010 if (info->attrs[NL80211_ATTR_MAC])
9011 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9012 else if (info->attrs[NL80211_ATTR_MAC_HINT])
9013 connect.bssid_hint =
9014 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9015 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9016 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9017
9018 if (info->attrs[NL80211_ATTR_IE]) {
9019 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9020 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9021 }
9022
9023 if (info->attrs[NL80211_ATTR_USE_MFP]) {
9024 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9025 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9026 !wiphy_ext_feature_isset(&rdev->wiphy,
9027 NL80211_EXT_FEATURE_MFP_OPTIONAL))
9028 return -EOPNOTSUPP;
9029
9030 if (connect.mfp != NL80211_MFP_REQUIRED &&
9031 connect.mfp != NL80211_MFP_NO &&
9032 connect.mfp != NL80211_MFP_OPTIONAL)
9033 return -EINVAL;
9034 } else {
9035 connect.mfp = NL80211_MFP_NO;
9036 }
9037
9038 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9039 connect.prev_bssid =
9040 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9041
9042 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9043 connect.channel = nl80211_get_valid_chan(
9044 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9045 if (!connect.channel)
9046 return -EINVAL;
9047 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9048 connect.channel_hint = nl80211_get_valid_chan(
9049 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9050 if (!connect.channel_hint)
9051 return -EINVAL;
9052 }
9053
9054 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9055 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9056 if (IS_ERR(connkeys))
9057 return PTR_ERR(connkeys);
9058 }
9059
9060 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9061 connect.flags |= ASSOC_REQ_DISABLE_HT;
9062
9063 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9064 memcpy(&connect.ht_capa_mask,
9065 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9066 sizeof(connect.ht_capa_mask));
9067
9068 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9069 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9070 kzfree(connkeys);
9071 return -EINVAL;
9072 }
9073 memcpy(&connect.ht_capa,
9074 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9075 sizeof(connect.ht_capa));
9076 }
9077
9078 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9079 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9080
9081 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9082 memcpy(&connect.vht_capa_mask,
9083 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9084 sizeof(connect.vht_capa_mask));
9085
9086 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9087 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9088 kzfree(connkeys);
9089 return -EINVAL;
9090 }
9091 memcpy(&connect.vht_capa,
9092 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9093 sizeof(connect.vht_capa));
9094 }
9095
9096 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9097 if (!((rdev->wiphy.features &
9098 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9099 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9100 !wiphy_ext_feature_isset(&rdev->wiphy,
9101 NL80211_EXT_FEATURE_RRM)) {
9102 kzfree(connkeys);
9103 return -EINVAL;
9104 }
9105 connect.flags |= ASSOC_REQ_USE_RRM;
9106 }
9107
9108 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9109 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9110 kzfree(connkeys);
9111 return -EOPNOTSUPP;
9112 }
9113
9114 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9115 /* bss selection makes no sense if bssid is set */
9116 if (connect.bssid) {
9117 kzfree(connkeys);
9118 return -EINVAL;
9119 }
9120
9121 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9122 wiphy, &connect.bss_select);
9123 if (err) {
9124 kzfree(connkeys);
9125 return err;
9126 }
9127 }
9128
9129 if (wiphy_ext_feature_isset(&rdev->wiphy,
9130 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9131 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9132 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9133 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9134 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9135 connect.fils_erp_username =
9136 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9137 connect.fils_erp_username_len =
9138 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9139 connect.fils_erp_realm =
9140 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9141 connect.fils_erp_realm_len =
9142 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9143 connect.fils_erp_next_seq_num =
9144 nla_get_u16(
9145 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9146 connect.fils_erp_rrk =
9147 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9148 connect.fils_erp_rrk_len =
9149 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9150 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9151 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9152 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9153 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9154 kzfree(connkeys);
9155 return -EINVAL;
9156 }
9157
9158 wdev_lock(dev->ieee80211_ptr);
9159
9160 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9161 connect.prev_bssid);
9162 if (err)
9163 kzfree(connkeys);
9164
9165 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9166 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9167 if (connect.bssid)
9168 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9169 connect.bssid, ETH_ALEN);
9170 else
9171 memset(dev->ieee80211_ptr->disconnect_bssid,
9172 0, ETH_ALEN);
9173 }
9174
9175 wdev_unlock(dev->ieee80211_ptr);
9176
9177 return err;
9178 }
9179
9180 static int nl80211_update_connect_params(struct sk_buff *skb,
9181 struct genl_info *info)
9182 {
9183 struct cfg80211_connect_params connect = {};
9184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9185 struct net_device *dev = info->user_ptr[1];
9186 struct wireless_dev *wdev = dev->ieee80211_ptr;
9187 u32 changed = 0;
9188 int ret;
9189
9190 if (!rdev->ops->update_connect_params)
9191 return -EOPNOTSUPP;
9192
9193 if (info->attrs[NL80211_ATTR_IE]) {
9194 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9195 return -EINVAL;
9196 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9197 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9198 changed |= UPDATE_ASSOC_IES;
9199 }
9200
9201 wdev_lock(dev->ieee80211_ptr);
9202 if (!wdev->current_bss)
9203 ret = -ENOLINK;
9204 else
9205 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9206 wdev_unlock(dev->ieee80211_ptr);
9207
9208 return ret;
9209 }
9210
9211 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9212 {
9213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9214 struct net_device *dev = info->user_ptr[1];
9215 u16 reason;
9216 int ret;
9217
9218 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9219 reason = WLAN_REASON_DEAUTH_LEAVING;
9220 else
9221 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9222
9223 if (reason == 0)
9224 return -EINVAL;
9225
9226 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9227 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9228 return -EOPNOTSUPP;
9229
9230 wdev_lock(dev->ieee80211_ptr);
9231 ret = cfg80211_disconnect(rdev, dev, reason, true);
9232 wdev_unlock(dev->ieee80211_ptr);
9233 return ret;
9234 }
9235
9236 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9237 {
9238 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9239 struct net *net;
9240 int err;
9241
9242 if (info->attrs[NL80211_ATTR_PID]) {
9243 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9244
9245 net = get_net_ns_by_pid(pid);
9246 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9247 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9248
9249 net = get_net_ns_by_fd(fd);
9250 } else {
9251 return -EINVAL;
9252 }
9253
9254 if (IS_ERR(net))
9255 return PTR_ERR(net);
9256
9257 err = 0;
9258
9259 /* check if anything to do */
9260 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9261 err = cfg80211_switch_netns(rdev, net);
9262
9263 put_net(net);
9264 return err;
9265 }
9266
9267 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9268 {
9269 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9270 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9271 struct cfg80211_pmksa *pmksa) = NULL;
9272 struct net_device *dev = info->user_ptr[1];
9273 struct cfg80211_pmksa pmksa;
9274
9275 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9276
9277 if (!info->attrs[NL80211_ATTR_PMKID])
9278 return -EINVAL;
9279
9280 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9281
9282 if (info->attrs[NL80211_ATTR_MAC]) {
9283 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9284 } else if (info->attrs[NL80211_ATTR_SSID] &&
9285 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9286 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9287 info->attrs[NL80211_ATTR_PMK])) {
9288 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9289 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9290 pmksa.cache_id =
9291 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9292 } else {
9293 return -EINVAL;
9294 }
9295 if (info->attrs[NL80211_ATTR_PMK]) {
9296 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9297 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9298 }
9299
9300 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9301 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9302 return -EOPNOTSUPP;
9303
9304 switch (info->genlhdr->cmd) {
9305 case NL80211_CMD_SET_PMKSA:
9306 rdev_ops = rdev->ops->set_pmksa;
9307 break;
9308 case NL80211_CMD_DEL_PMKSA:
9309 rdev_ops = rdev->ops->del_pmksa;
9310 break;
9311 default:
9312 WARN_ON(1);
9313 break;
9314 }
9315
9316 if (!rdev_ops)
9317 return -EOPNOTSUPP;
9318
9319 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9320 }
9321
9322 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9323 {
9324 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9325 struct net_device *dev = info->user_ptr[1];
9326
9327 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9328 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9329 return -EOPNOTSUPP;
9330
9331 if (!rdev->ops->flush_pmksa)
9332 return -EOPNOTSUPP;
9333
9334 return rdev_flush_pmksa(rdev, dev);
9335 }
9336
9337 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9338 {
9339 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9340 struct net_device *dev = info->user_ptr[1];
9341 u8 action_code, dialog_token;
9342 u32 peer_capability = 0;
9343 u16 status_code;
9344 u8 *peer;
9345 bool initiator;
9346
9347 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9348 !rdev->ops->tdls_mgmt)
9349 return -EOPNOTSUPP;
9350
9351 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9352 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9353 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9354 !info->attrs[NL80211_ATTR_IE] ||
9355 !info->attrs[NL80211_ATTR_MAC])
9356 return -EINVAL;
9357
9358 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9359 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9360 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9361 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9362 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9363 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9364 peer_capability =
9365 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9366
9367 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9368 dialog_token, status_code, peer_capability,
9369 initiator,
9370 nla_data(info->attrs[NL80211_ATTR_IE]),
9371 nla_len(info->attrs[NL80211_ATTR_IE]));
9372 }
9373
9374 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
9375 {
9376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9377 struct net_device *dev = info->user_ptr[1];
9378 enum nl80211_tdls_operation operation;
9379 u8 *peer;
9380
9381 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9382 !rdev->ops->tdls_oper)
9383 return -EOPNOTSUPP;
9384
9385 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9386 !info->attrs[NL80211_ATTR_MAC])
9387 return -EINVAL;
9388
9389 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9390 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9391
9392 return rdev_tdls_oper(rdev, dev, peer, operation);
9393 }
9394
9395 static int nl80211_remain_on_channel(struct sk_buff *skb,
9396 struct genl_info *info)
9397 {
9398 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9399 struct wireless_dev *wdev = info->user_ptr[1];
9400 struct cfg80211_chan_def chandef;
9401 const struct cfg80211_chan_def *compat_chandef;
9402 struct sk_buff *msg;
9403 void *hdr;
9404 u64 cookie;
9405 u32 duration;
9406 int err;
9407
9408 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9409 !info->attrs[NL80211_ATTR_DURATION])
9410 return -EINVAL;
9411
9412 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9413
9414 if (!rdev->ops->remain_on_channel ||
9415 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9416 return -EOPNOTSUPP;
9417
9418 /*
9419 * We should be on that channel for at least a minimum amount of
9420 * time (10ms) but no longer than the driver supports.
9421 */
9422 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9423 duration > rdev->wiphy.max_remain_on_channel_duration)
9424 return -EINVAL;
9425
9426 err = nl80211_parse_chandef(rdev, info, &chandef);
9427 if (err)
9428 return err;
9429
9430 wdev_lock(wdev);
9431 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9432 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9433 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9434 &chandef);
9435 if (compat_chandef != &chandef) {
9436 wdev_unlock(wdev);
9437 return -EBUSY;
9438 }
9439 }
9440 wdev_unlock(wdev);
9441
9442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9443 if (!msg)
9444 return -ENOMEM;
9445
9446 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9447 NL80211_CMD_REMAIN_ON_CHANNEL);
9448 if (!hdr) {
9449 err = -ENOBUFS;
9450 goto free_msg;
9451 }
9452
9453 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9454 duration, &cookie);
9455
9456 if (err)
9457 goto free_msg;
9458
9459 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9460 NL80211_ATTR_PAD))
9461 goto nla_put_failure;
9462
9463 genlmsg_end(msg, hdr);
9464
9465 return genlmsg_reply(msg, info);
9466
9467 nla_put_failure:
9468 err = -ENOBUFS;
9469 free_msg:
9470 nlmsg_free(msg);
9471 return err;
9472 }
9473
9474 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9475 struct genl_info *info)
9476 {
9477 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9478 struct wireless_dev *wdev = info->user_ptr[1];
9479 u64 cookie;
9480
9481 if (!info->attrs[NL80211_ATTR_COOKIE])
9482 return -EINVAL;
9483
9484 if (!rdev->ops->cancel_remain_on_channel)
9485 return -EOPNOTSUPP;
9486
9487 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9488
9489 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9490 }
9491
9492 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9493 struct genl_info *info)
9494 {
9495 struct cfg80211_bitrate_mask mask;
9496 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9497 struct net_device *dev = info->user_ptr[1];
9498 int err;
9499
9500 if (!rdev->ops->set_bitrate_mask)
9501 return -EOPNOTSUPP;
9502
9503 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9504 if (err)
9505 return err;
9506
9507 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9508 }
9509
9510 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9511 {
9512 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9513 struct wireless_dev *wdev = info->user_ptr[1];
9514 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9515
9516 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9517 return -EINVAL;
9518
9519 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9520 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9521
9522 switch (wdev->iftype) {
9523 case NL80211_IFTYPE_STATION:
9524 case NL80211_IFTYPE_ADHOC:
9525 case NL80211_IFTYPE_P2P_CLIENT:
9526 case NL80211_IFTYPE_AP:
9527 case NL80211_IFTYPE_AP_VLAN:
9528 case NL80211_IFTYPE_MESH_POINT:
9529 case NL80211_IFTYPE_P2P_GO:
9530 case NL80211_IFTYPE_P2P_DEVICE:
9531 break;
9532 case NL80211_IFTYPE_NAN:
9533 default:
9534 return -EOPNOTSUPP;
9535 }
9536
9537 /* not much point in registering if we can't reply */
9538 if (!rdev->ops->mgmt_tx)
9539 return -EOPNOTSUPP;
9540
9541 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9542 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9543 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9544 }
9545
9546 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9547 {
9548 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9549 struct wireless_dev *wdev = info->user_ptr[1];
9550 struct cfg80211_chan_def chandef;
9551 int err;
9552 void *hdr = NULL;
9553 u64 cookie;
9554 struct sk_buff *msg = NULL;
9555 struct cfg80211_mgmt_tx_params params = {
9556 .dont_wait_for_ack =
9557 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9558 };
9559
9560 if (!info->attrs[NL80211_ATTR_FRAME])
9561 return -EINVAL;
9562
9563 if (!rdev->ops->mgmt_tx)
9564 return -EOPNOTSUPP;
9565
9566 switch (wdev->iftype) {
9567 case NL80211_IFTYPE_P2P_DEVICE:
9568 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9569 return -EINVAL;
9570 case NL80211_IFTYPE_STATION:
9571 case NL80211_IFTYPE_ADHOC:
9572 case NL80211_IFTYPE_P2P_CLIENT:
9573 case NL80211_IFTYPE_AP:
9574 case NL80211_IFTYPE_AP_VLAN:
9575 case NL80211_IFTYPE_MESH_POINT:
9576 case NL80211_IFTYPE_P2P_GO:
9577 break;
9578 case NL80211_IFTYPE_NAN:
9579 default:
9580 return -EOPNOTSUPP;
9581 }
9582
9583 if (info->attrs[NL80211_ATTR_DURATION]) {
9584 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9585 return -EINVAL;
9586 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9587
9588 /*
9589 * We should wait on the channel for at least a minimum amount
9590 * of time (10ms) but no longer than the driver supports.
9591 */
9592 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9593 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9594 return -EINVAL;
9595 }
9596
9597 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9598
9599 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9600 return -EINVAL;
9601
9602 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9603
9604 /* get the channel if any has been specified, otherwise pass NULL to
9605 * the driver. The latter will use the current one
9606 */
9607 chandef.chan = NULL;
9608 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9609 err = nl80211_parse_chandef(rdev, info, &chandef);
9610 if (err)
9611 return err;
9612 }
9613
9614 if (!chandef.chan && params.offchan)
9615 return -EINVAL;
9616
9617 wdev_lock(wdev);
9618 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9619 wdev_unlock(wdev);
9620 return -EBUSY;
9621 }
9622 wdev_unlock(wdev);
9623
9624 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9625 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9626
9627 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9628 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9629 int i;
9630
9631 if (len % sizeof(u16))
9632 return -EINVAL;
9633
9634 params.n_csa_offsets = len / sizeof(u16);
9635 params.csa_offsets =
9636 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9637
9638 /* check that all the offsets fit the frame */
9639 for (i = 0; i < params.n_csa_offsets; i++) {
9640 if (params.csa_offsets[i] >= params.len)
9641 return -EINVAL;
9642 }
9643 }
9644
9645 if (!params.dont_wait_for_ack) {
9646 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9647 if (!msg)
9648 return -ENOMEM;
9649
9650 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9651 NL80211_CMD_FRAME);
9652 if (!hdr) {
9653 err = -ENOBUFS;
9654 goto free_msg;
9655 }
9656 }
9657
9658 params.chan = chandef.chan;
9659 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9660 if (err)
9661 goto free_msg;
9662
9663 if (msg) {
9664 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9665 NL80211_ATTR_PAD))
9666 goto nla_put_failure;
9667
9668 genlmsg_end(msg, hdr);
9669 return genlmsg_reply(msg, info);
9670 }
9671
9672 return 0;
9673
9674 nla_put_failure:
9675 err = -ENOBUFS;
9676 free_msg:
9677 nlmsg_free(msg);
9678 return err;
9679 }
9680
9681 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9682 {
9683 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9684 struct wireless_dev *wdev = info->user_ptr[1];
9685 u64 cookie;
9686
9687 if (!info->attrs[NL80211_ATTR_COOKIE])
9688 return -EINVAL;
9689
9690 if (!rdev->ops->mgmt_tx_cancel_wait)
9691 return -EOPNOTSUPP;
9692
9693 switch (wdev->iftype) {
9694 case NL80211_IFTYPE_STATION:
9695 case NL80211_IFTYPE_ADHOC:
9696 case NL80211_IFTYPE_P2P_CLIENT:
9697 case NL80211_IFTYPE_AP:
9698 case NL80211_IFTYPE_AP_VLAN:
9699 case NL80211_IFTYPE_P2P_GO:
9700 case NL80211_IFTYPE_P2P_DEVICE:
9701 break;
9702 case NL80211_IFTYPE_NAN:
9703 default:
9704 return -EOPNOTSUPP;
9705 }
9706
9707 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9708
9709 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9710 }
9711
9712 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9713 {
9714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9715 struct wireless_dev *wdev;
9716 struct net_device *dev = info->user_ptr[1];
9717 u8 ps_state;
9718 bool state;
9719 int err;
9720
9721 if (!info->attrs[NL80211_ATTR_PS_STATE])
9722 return -EINVAL;
9723
9724 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9725
9726 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9727 return -EINVAL;
9728
9729 wdev = dev->ieee80211_ptr;
9730
9731 if (!rdev->ops->set_power_mgmt)
9732 return -EOPNOTSUPP;
9733
9734 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9735
9736 if (state == wdev->ps)
9737 return 0;
9738
9739 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9740 if (!err)
9741 wdev->ps = state;
9742 return err;
9743 }
9744
9745 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9746 {
9747 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9748 enum nl80211_ps_state ps_state;
9749 struct wireless_dev *wdev;
9750 struct net_device *dev = info->user_ptr[1];
9751 struct sk_buff *msg;
9752 void *hdr;
9753 int err;
9754
9755 wdev = dev->ieee80211_ptr;
9756
9757 if (!rdev->ops->set_power_mgmt)
9758 return -EOPNOTSUPP;
9759
9760 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9761 if (!msg)
9762 return -ENOMEM;
9763
9764 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9765 NL80211_CMD_GET_POWER_SAVE);
9766 if (!hdr) {
9767 err = -ENOBUFS;
9768 goto free_msg;
9769 }
9770
9771 if (wdev->ps)
9772 ps_state = NL80211_PS_ENABLED;
9773 else
9774 ps_state = NL80211_PS_DISABLED;
9775
9776 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9777 goto nla_put_failure;
9778
9779 genlmsg_end(msg, hdr);
9780 return genlmsg_reply(msg, info);
9781
9782 nla_put_failure:
9783 err = -ENOBUFS;
9784 free_msg:
9785 nlmsg_free(msg);
9786 return err;
9787 }
9788
9789 static const struct nla_policy
9790 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9791 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9792 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9793 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9794 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9795 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9796 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9797 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9798 };
9799
9800 static int nl80211_set_cqm_txe(struct genl_info *info,
9801 u32 rate, u32 pkts, u32 intvl)
9802 {
9803 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9804 struct net_device *dev = info->user_ptr[1];
9805 struct wireless_dev *wdev = dev->ieee80211_ptr;
9806
9807 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9808 return -EINVAL;
9809
9810 if (!rdev->ops->set_cqm_txe_config)
9811 return -EOPNOTSUPP;
9812
9813 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9814 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9815 return -EOPNOTSUPP;
9816
9817 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9818 }
9819
9820 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9821 struct net_device *dev)
9822 {
9823 struct wireless_dev *wdev = dev->ieee80211_ptr;
9824 s32 last, low, high;
9825 u32 hyst;
9826 int i, n;
9827 int err;
9828
9829 /* RSSI reporting disabled? */
9830 if (!wdev->cqm_config)
9831 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9832
9833 /*
9834 * Obtain current RSSI value if possible, if not and no RSSI threshold
9835 * event has been received yet, we should receive an event after a
9836 * connection is established and enough beacons received to calculate
9837 * the average.
9838 */
9839 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9840 rdev->ops->get_station) {
9841 struct station_info sinfo = {};
9842 u8 *mac_addr;
9843
9844 mac_addr = wdev->current_bss->pub.bssid;
9845
9846 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9847 if (err)
9848 return err;
9849
9850 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9851 wdev->cqm_config->last_rssi_event_value =
9852 (s8) sinfo.rx_beacon_signal_avg;
9853 }
9854
9855 last = wdev->cqm_config->last_rssi_event_value;
9856 hyst = wdev->cqm_config->rssi_hyst;
9857 n = wdev->cqm_config->n_rssi_thresholds;
9858
9859 for (i = 0; i < n; i++)
9860 if (last < wdev->cqm_config->rssi_thresholds[i])
9861 break;
9862
9863 low = i > 0 ?
9864 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN;
9865 high = i < n ?
9866 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX;
9867
9868 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9869 }
9870
9871 static int nl80211_set_cqm_rssi(struct genl_info *info,
9872 const s32 *thresholds, int n_thresholds,
9873 u32 hysteresis)
9874 {
9875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9876 struct net_device *dev = info->user_ptr[1];
9877 struct wireless_dev *wdev = dev->ieee80211_ptr;
9878 int i, err;
9879 s32 prev = S32_MIN;
9880
9881 /* Check all values negative and sorted */
9882 for (i = 0; i < n_thresholds; i++) {
9883 if (thresholds[i] > 0 || thresholds[i] <= prev)
9884 return -EINVAL;
9885
9886 prev = thresholds[i];
9887 }
9888
9889 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9890 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9891 return -EOPNOTSUPP;
9892
9893 wdev_lock(wdev);
9894 cfg80211_cqm_config_free(wdev);
9895 wdev_unlock(wdev);
9896
9897 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9898 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9899 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9900
9901 return rdev_set_cqm_rssi_config(rdev, dev,
9902 thresholds[0], hysteresis);
9903 }
9904
9905 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9906 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9907 return -EOPNOTSUPP;
9908
9909 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9910 n_thresholds = 0;
9911
9912 wdev_lock(wdev);
9913 if (n_thresholds) {
9914 struct cfg80211_cqm_config *cqm_config;
9915
9916 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9917 n_thresholds * sizeof(s32), GFP_KERNEL);
9918 if (!cqm_config) {
9919 err = -ENOMEM;
9920 goto unlock;
9921 }
9922
9923 cqm_config->rssi_hyst = hysteresis;
9924 cqm_config->n_rssi_thresholds = n_thresholds;
9925 memcpy(cqm_config->rssi_thresholds, thresholds,
9926 n_thresholds * sizeof(s32));
9927
9928 wdev->cqm_config = cqm_config;
9929 }
9930
9931 err = cfg80211_cqm_rssi_update(rdev, dev);
9932
9933 unlock:
9934 wdev_unlock(wdev);
9935
9936 return err;
9937 }
9938
9939 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9940 {
9941 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9942 struct nlattr *cqm;
9943 int err;
9944
9945 cqm = info->attrs[NL80211_ATTR_CQM];
9946 if (!cqm)
9947 return -EINVAL;
9948
9949 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9950 nl80211_attr_cqm_policy, info->extack);
9951 if (err)
9952 return err;
9953
9954 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9955 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9956 const s32 *thresholds =
9957 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9958 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9959 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9960
9961 if (len % 4)
9962 return -EINVAL;
9963
9964 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9965 hysteresis);
9966 }
9967
9968 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9969 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9970 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9971 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9972 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9973 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9974
9975 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9976 }
9977
9978 return -EINVAL;
9979 }
9980
9981 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9982 {
9983 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9984 struct net_device *dev = info->user_ptr[1];
9985 struct ocb_setup setup = {};
9986 int err;
9987
9988 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9989 if (err)
9990 return err;
9991
9992 return cfg80211_join_ocb(rdev, dev, &setup);
9993 }
9994
9995 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9996 {
9997 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9998 struct net_device *dev = info->user_ptr[1];
9999
10000 return cfg80211_leave_ocb(rdev, dev);
10001 }
10002
10003 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
10004 {
10005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10006 struct net_device *dev = info->user_ptr[1];
10007 struct mesh_config cfg;
10008 struct mesh_setup setup;
10009 int err;
10010
10011 /* start with default */
10012 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
10013 memcpy(&setup, &default_mesh_setup, sizeof(setup));
10014
10015 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
10016 /* and parse parameters if given */
10017 err = nl80211_parse_mesh_config(info, &cfg, NULL);
10018 if (err)
10019 return err;
10020 }
10021
10022 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
10023 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
10024 return -EINVAL;
10025
10026 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
10027 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10028
10029 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10030 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10031 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10032 return -EINVAL;
10033
10034 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10035 setup.beacon_interval =
10036 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10037
10038 err = cfg80211_validate_beacon_int(rdev,
10039 NL80211_IFTYPE_MESH_POINT,
10040 setup.beacon_interval);
10041 if (err)
10042 return err;
10043 }
10044
10045 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10046 setup.dtim_period =
10047 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10048 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10049 return -EINVAL;
10050 }
10051
10052 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10053 /* parse additional setup parameters if given */
10054 err = nl80211_parse_mesh_setup(info, &setup);
10055 if (err)
10056 return err;
10057 }
10058
10059 if (setup.user_mpm)
10060 cfg.auto_open_plinks = false;
10061
10062 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10063 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10064 if (err)
10065 return err;
10066 } else {
10067 /* cfg80211_join_mesh() will sort it out */
10068 setup.chandef.chan = NULL;
10069 }
10070
10071 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10072 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10073 int n_rates =
10074 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10075 struct ieee80211_supported_band *sband;
10076
10077 if (!setup.chandef.chan)
10078 return -EINVAL;
10079
10080 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10081
10082 err = ieee80211_get_ratemask(sband, rates, n_rates,
10083 &setup.basic_rates);
10084 if (err)
10085 return err;
10086 }
10087
10088 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10089 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10090 if (err)
10091 return err;
10092
10093 if (!setup.chandef.chan)
10094 return -EINVAL;
10095
10096 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10097 &setup.beacon_rate);
10098 if (err)
10099 return err;
10100 }
10101
10102 setup.userspace_handles_dfs =
10103 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10104
10105 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10106 }
10107
10108 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10109 {
10110 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10111 struct net_device *dev = info->user_ptr[1];
10112
10113 return cfg80211_leave_mesh(rdev, dev);
10114 }
10115
10116 #ifdef CONFIG_PM
10117 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10118 struct cfg80211_registered_device *rdev)
10119 {
10120 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10121 struct nlattr *nl_pats, *nl_pat;
10122 int i, pat_len;
10123
10124 if (!wowlan->n_patterns)
10125 return 0;
10126
10127 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10128 if (!nl_pats)
10129 return -ENOBUFS;
10130
10131 for (i = 0; i < wowlan->n_patterns; i++) {
10132 nl_pat = nla_nest_start(msg, i + 1);
10133 if (!nl_pat)
10134 return -ENOBUFS;
10135 pat_len = wowlan->patterns[i].pattern_len;
10136 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10137 wowlan->patterns[i].mask) ||
10138 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10139 wowlan->patterns[i].pattern) ||
10140 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10141 wowlan->patterns[i].pkt_offset))
10142 return -ENOBUFS;
10143 nla_nest_end(msg, nl_pat);
10144 }
10145 nla_nest_end(msg, nl_pats);
10146
10147 return 0;
10148 }
10149
10150 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10151 struct cfg80211_wowlan_tcp *tcp)
10152 {
10153 struct nlattr *nl_tcp;
10154
10155 if (!tcp)
10156 return 0;
10157
10158 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10159 if (!nl_tcp)
10160 return -ENOBUFS;
10161
10162 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10163 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10164 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10165 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10166 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10167 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10168 tcp->payload_len, tcp->payload) ||
10169 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10170 tcp->data_interval) ||
10171 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10172 tcp->wake_len, tcp->wake_data) ||
10173 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10174 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10175 return -ENOBUFS;
10176
10177 if (tcp->payload_seq.len &&
10178 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10179 sizeof(tcp->payload_seq), &tcp->payload_seq))
10180 return -ENOBUFS;
10181
10182 if (tcp->payload_tok.len &&
10183 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10184 sizeof(tcp->payload_tok) + tcp->tokens_size,
10185 &tcp->payload_tok))
10186 return -ENOBUFS;
10187
10188 nla_nest_end(msg, nl_tcp);
10189
10190 return 0;
10191 }
10192
10193 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10194 struct cfg80211_sched_scan_request *req)
10195 {
10196 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10197 int i;
10198
10199 if (!req)
10200 return 0;
10201
10202 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10203 if (!nd)
10204 return -ENOBUFS;
10205
10206 if (req->n_scan_plans == 1 &&
10207 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10208 req->scan_plans[0].interval * 1000))
10209 return -ENOBUFS;
10210
10211 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10212 return -ENOBUFS;
10213
10214 if (req->relative_rssi_set) {
10215 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10216
10217 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10218 req->relative_rssi))
10219 return -ENOBUFS;
10220
10221 rssi_adjust.band = req->rssi_adjust.band;
10222 rssi_adjust.delta = req->rssi_adjust.delta;
10223 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10224 sizeof(rssi_adjust), &rssi_adjust))
10225 return -ENOBUFS;
10226 }
10227
10228 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10229 if (!freqs)
10230 return -ENOBUFS;
10231
10232 for (i = 0; i < req->n_channels; i++) {
10233 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10234 return -ENOBUFS;
10235 }
10236
10237 nla_nest_end(msg, freqs);
10238
10239 if (req->n_match_sets) {
10240 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10241 if (!matches)
10242 return -ENOBUFS;
10243
10244 for (i = 0; i < req->n_match_sets; i++) {
10245 match = nla_nest_start(msg, i);
10246 if (!match)
10247 return -ENOBUFS;
10248
10249 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10250 req->match_sets[i].ssid.ssid_len,
10251 req->match_sets[i].ssid.ssid))
10252 return -ENOBUFS;
10253 nla_nest_end(msg, match);
10254 }
10255 nla_nest_end(msg, matches);
10256 }
10257
10258 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10259 if (!scan_plans)
10260 return -ENOBUFS;
10261
10262 for (i = 0; i < req->n_scan_plans; i++) {
10263 scan_plan = nla_nest_start(msg, i + 1);
10264 if (!scan_plan)
10265 return -ENOBUFS;
10266
10267 if (!scan_plan ||
10268 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10269 req->scan_plans[i].interval) ||
10270 (req->scan_plans[i].iterations &&
10271 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10272 req->scan_plans[i].iterations)))
10273 return -ENOBUFS;
10274 nla_nest_end(msg, scan_plan);
10275 }
10276 nla_nest_end(msg, scan_plans);
10277
10278 nla_nest_end(msg, nd);
10279
10280 return 0;
10281 }
10282
10283 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10284 {
10285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10286 struct sk_buff *msg;
10287 void *hdr;
10288 u32 size = NLMSG_DEFAULT_SIZE;
10289
10290 if (!rdev->wiphy.wowlan)
10291 return -EOPNOTSUPP;
10292
10293 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10294 /* adjust size to have room for all the data */
10295 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10296 rdev->wiphy.wowlan_config->tcp->payload_len +
10297 rdev->wiphy.wowlan_config->tcp->wake_len +
10298 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10299 }
10300
10301 msg = nlmsg_new(size, GFP_KERNEL);
10302 if (!msg)
10303 return -ENOMEM;
10304
10305 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10306 NL80211_CMD_GET_WOWLAN);
10307 if (!hdr)
10308 goto nla_put_failure;
10309
10310 if (rdev->wiphy.wowlan_config) {
10311 struct nlattr *nl_wowlan;
10312
10313 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10314 if (!nl_wowlan)
10315 goto nla_put_failure;
10316
10317 if ((rdev->wiphy.wowlan_config->any &&
10318 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10319 (rdev->wiphy.wowlan_config->disconnect &&
10320 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10321 (rdev->wiphy.wowlan_config->magic_pkt &&
10322 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10323 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10324 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10325 (rdev->wiphy.wowlan_config->eap_identity_req &&
10326 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10327 (rdev->wiphy.wowlan_config->four_way_handshake &&
10328 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10329 (rdev->wiphy.wowlan_config->rfkill_release &&
10330 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10331 goto nla_put_failure;
10332
10333 if (nl80211_send_wowlan_patterns(msg, rdev))
10334 goto nla_put_failure;
10335
10336 if (nl80211_send_wowlan_tcp(msg,
10337 rdev->wiphy.wowlan_config->tcp))
10338 goto nla_put_failure;
10339
10340 if (nl80211_send_wowlan_nd(
10341 msg,
10342 rdev->wiphy.wowlan_config->nd_config))
10343 goto nla_put_failure;
10344
10345 nla_nest_end(msg, nl_wowlan);
10346 }
10347
10348 genlmsg_end(msg, hdr);
10349 return genlmsg_reply(msg, info);
10350
10351 nla_put_failure:
10352 nlmsg_free(msg);
10353 return -ENOBUFS;
10354 }
10355
10356 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10357 struct nlattr *attr,
10358 struct cfg80211_wowlan *trig)
10359 {
10360 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10361 struct cfg80211_wowlan_tcp *cfg;
10362 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10363 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10364 u32 size;
10365 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10366 int err, port;
10367
10368 if (!rdev->wiphy.wowlan->tcp)
10369 return -EINVAL;
10370
10371 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10372 nl80211_wowlan_tcp_policy, NULL);
10373 if (err)
10374 return err;
10375
10376 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10377 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10378 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10379 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10380 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10381 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10382 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10383 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10384 return -EINVAL;
10385
10386 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10387 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10388 return -EINVAL;
10389
10390 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10391 rdev->wiphy.wowlan->tcp->data_interval_max ||
10392 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10393 return -EINVAL;
10394
10395 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10396 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10397 return -EINVAL;
10398
10399 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10400 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10401 return -EINVAL;
10402
10403 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10404 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10405
10406 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10407 tokens_size = tokln - sizeof(*tok);
10408
10409 if (!tok->len || tokens_size % tok->len)
10410 return -EINVAL;
10411 if (!rdev->wiphy.wowlan->tcp->tok)
10412 return -EINVAL;
10413 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10414 return -EINVAL;
10415 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10416 return -EINVAL;
10417 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10418 return -EINVAL;
10419 if (tok->offset + tok->len > data_size)
10420 return -EINVAL;
10421 }
10422
10423 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10424 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10425 if (!rdev->wiphy.wowlan->tcp->seq)
10426 return -EINVAL;
10427 if (seq->len == 0 || seq->len > 4)
10428 return -EINVAL;
10429 if (seq->len + seq->offset > data_size)
10430 return -EINVAL;
10431 }
10432
10433 size = sizeof(*cfg);
10434 size += data_size;
10435 size += wake_size + wake_mask_size;
10436 size += tokens_size;
10437
10438 cfg = kzalloc(size, GFP_KERNEL);
10439 if (!cfg)
10440 return -ENOMEM;
10441 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10442 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10443 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10444 ETH_ALEN);
10445 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10446 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10447 else
10448 port = 0;
10449 #ifdef CONFIG_INET
10450 /* allocate a socket and port for it and use it */
10451 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10452 IPPROTO_TCP, &cfg->sock, 1);
10453 if (err) {
10454 kfree(cfg);
10455 return err;
10456 }
10457 if (inet_csk_get_port(cfg->sock->sk, port)) {
10458 sock_release(cfg->sock);
10459 kfree(cfg);
10460 return -EADDRINUSE;
10461 }
10462 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10463 #else
10464 if (!port) {
10465 kfree(cfg);
10466 return -EINVAL;
10467 }
10468 cfg->src_port = port;
10469 #endif
10470
10471 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10472 cfg->payload_len = data_size;
10473 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10474 memcpy((void *)cfg->payload,
10475 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10476 data_size);
10477 if (seq)
10478 cfg->payload_seq = *seq;
10479 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10480 cfg->wake_len = wake_size;
10481 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10482 memcpy((void *)cfg->wake_data,
10483 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10484 wake_size);
10485 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10486 data_size + wake_size;
10487 memcpy((void *)cfg->wake_mask,
10488 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10489 wake_mask_size);
10490 if (tok) {
10491 cfg->tokens_size = tokens_size;
10492 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10493 }
10494
10495 trig->tcp = cfg;
10496
10497 return 0;
10498 }
10499
10500 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10501 const struct wiphy_wowlan_support *wowlan,
10502 struct nlattr *attr,
10503 struct cfg80211_wowlan *trig)
10504 {
10505 struct nlattr **tb;
10506 int err;
10507
10508 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10509 if (!tb)
10510 return -ENOMEM;
10511
10512 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10513 err = -EOPNOTSUPP;
10514 goto out;
10515 }
10516
10517 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10518 NULL);
10519 if (err)
10520 goto out;
10521
10522 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10523 wowlan->max_nd_match_sets);
10524 err = PTR_ERR_OR_ZERO(trig->nd_config);
10525 if (err)
10526 trig->nd_config = NULL;
10527
10528 out:
10529 kfree(tb);
10530 return err;
10531 }
10532
10533 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10534 {
10535 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10536 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10537 struct cfg80211_wowlan new_triggers = {};
10538 struct cfg80211_wowlan *ntrig;
10539 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10540 int err, i;
10541 bool prev_enabled = rdev->wiphy.wowlan_config;
10542 bool regular = false;
10543
10544 if (!wowlan)
10545 return -EOPNOTSUPP;
10546
10547 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10548 cfg80211_rdev_free_wowlan(rdev);
10549 rdev->wiphy.wowlan_config = NULL;
10550 goto set_wakeup;
10551 }
10552
10553 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10554 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10555 nl80211_wowlan_policy, info->extack);
10556 if (err)
10557 return err;
10558
10559 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10560 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10561 return -EINVAL;
10562 new_triggers.any = true;
10563 }
10564
10565 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10566 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10567 return -EINVAL;
10568 new_triggers.disconnect = true;
10569 regular = true;
10570 }
10571
10572 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10573 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10574 return -EINVAL;
10575 new_triggers.magic_pkt = true;
10576 regular = true;
10577 }
10578
10579 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10580 return -EINVAL;
10581
10582 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10583 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10584 return -EINVAL;
10585 new_triggers.gtk_rekey_failure = true;
10586 regular = true;
10587 }
10588
10589 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10590 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10591 return -EINVAL;
10592 new_triggers.eap_identity_req = true;
10593 regular = true;
10594 }
10595
10596 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10597 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10598 return -EINVAL;
10599 new_triggers.four_way_handshake = true;
10600 regular = true;
10601 }
10602
10603 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10604 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10605 return -EINVAL;
10606 new_triggers.rfkill_release = true;
10607 regular = true;
10608 }
10609
10610 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10611 struct nlattr *pat;
10612 int n_patterns = 0;
10613 int rem, pat_len, mask_len, pkt_offset;
10614 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10615
10616 regular = true;
10617
10618 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10619 rem)
10620 n_patterns++;
10621 if (n_patterns > wowlan->n_patterns)
10622 return -EINVAL;
10623
10624 new_triggers.patterns = kcalloc(n_patterns,
10625 sizeof(new_triggers.patterns[0]),
10626 GFP_KERNEL);
10627 if (!new_triggers.patterns)
10628 return -ENOMEM;
10629
10630 new_triggers.n_patterns = n_patterns;
10631 i = 0;
10632
10633 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10634 rem) {
10635 u8 *mask_pat;
10636
10637 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10638 nl80211_packet_pattern_policy,
10639 info->extack);
10640 err = -EINVAL;
10641 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10642 !pat_tb[NL80211_PKTPAT_PATTERN])
10643 goto error;
10644 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10645 mask_len = DIV_ROUND_UP(pat_len, 8);
10646 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10647 goto error;
10648 if (pat_len > wowlan->pattern_max_len ||
10649 pat_len < wowlan->pattern_min_len)
10650 goto error;
10651
10652 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10653 pkt_offset = 0;
10654 else
10655 pkt_offset = nla_get_u32(
10656 pat_tb[NL80211_PKTPAT_OFFSET]);
10657 if (pkt_offset > wowlan->max_pkt_offset)
10658 goto error;
10659 new_triggers.patterns[i].pkt_offset = pkt_offset;
10660
10661 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10662 if (!mask_pat) {
10663 err = -ENOMEM;
10664 goto error;
10665 }
10666 new_triggers.patterns[i].mask = mask_pat;
10667 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10668 mask_len);
10669 mask_pat += mask_len;
10670 new_triggers.patterns[i].pattern = mask_pat;
10671 new_triggers.patterns[i].pattern_len = pat_len;
10672 memcpy(mask_pat,
10673 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10674 pat_len);
10675 i++;
10676 }
10677 }
10678
10679 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10680 regular = true;
10681 err = nl80211_parse_wowlan_tcp(
10682 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10683 &new_triggers);
10684 if (err)
10685 goto error;
10686 }
10687
10688 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10689 regular = true;
10690 err = nl80211_parse_wowlan_nd(
10691 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10692 &new_triggers);
10693 if (err)
10694 goto error;
10695 }
10696
10697 /* The 'any' trigger means the device continues operating more or less
10698 * as in its normal operation mode and wakes up the host on most of the
10699 * normal interrupts (like packet RX, ...)
10700 * It therefore makes little sense to combine with the more constrained
10701 * wakeup trigger modes.
10702 */
10703 if (new_triggers.any && regular) {
10704 err = -EINVAL;
10705 goto error;
10706 }
10707
10708 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10709 if (!ntrig) {
10710 err = -ENOMEM;
10711 goto error;
10712 }
10713 cfg80211_rdev_free_wowlan(rdev);
10714 rdev->wiphy.wowlan_config = ntrig;
10715
10716 set_wakeup:
10717 if (rdev->ops->set_wakeup &&
10718 prev_enabled != !!rdev->wiphy.wowlan_config)
10719 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10720
10721 return 0;
10722 error:
10723 for (i = 0; i < new_triggers.n_patterns; i++)
10724 kfree(new_triggers.patterns[i].mask);
10725 kfree(new_triggers.patterns);
10726 if (new_triggers.tcp && new_triggers.tcp->sock)
10727 sock_release(new_triggers.tcp->sock);
10728 kfree(new_triggers.tcp);
10729 kfree(new_triggers.nd_config);
10730 return err;
10731 }
10732 #endif
10733
10734 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10735 struct cfg80211_registered_device *rdev)
10736 {
10737 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10738 int i, j, pat_len;
10739 struct cfg80211_coalesce_rules *rule;
10740
10741 if (!rdev->coalesce->n_rules)
10742 return 0;
10743
10744 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10745 if (!nl_rules)
10746 return -ENOBUFS;
10747
10748 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10749 nl_rule = nla_nest_start(msg, i + 1);
10750 if (!nl_rule)
10751 return -ENOBUFS;
10752
10753 rule = &rdev->coalesce->rules[i];
10754 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10755 rule->delay))
10756 return -ENOBUFS;
10757
10758 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10759 rule->condition))
10760 return -ENOBUFS;
10761
10762 nl_pats = nla_nest_start(msg,
10763 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10764 if (!nl_pats)
10765 return -ENOBUFS;
10766
10767 for (j = 0; j < rule->n_patterns; j++) {
10768 nl_pat = nla_nest_start(msg, j + 1);
10769 if (!nl_pat)
10770 return -ENOBUFS;
10771 pat_len = rule->patterns[j].pattern_len;
10772 if (nla_put(msg, NL80211_PKTPAT_MASK,
10773 DIV_ROUND_UP(pat_len, 8),
10774 rule->patterns[j].mask) ||
10775 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10776 rule->patterns[j].pattern) ||
10777 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10778 rule->patterns[j].pkt_offset))
10779 return -ENOBUFS;
10780 nla_nest_end(msg, nl_pat);
10781 }
10782 nla_nest_end(msg, nl_pats);
10783 nla_nest_end(msg, nl_rule);
10784 }
10785 nla_nest_end(msg, nl_rules);
10786
10787 return 0;
10788 }
10789
10790 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10791 {
10792 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10793 struct sk_buff *msg;
10794 void *hdr;
10795
10796 if (!rdev->wiphy.coalesce)
10797 return -EOPNOTSUPP;
10798
10799 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10800 if (!msg)
10801 return -ENOMEM;
10802
10803 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10804 NL80211_CMD_GET_COALESCE);
10805 if (!hdr)
10806 goto nla_put_failure;
10807
10808 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10809 goto nla_put_failure;
10810
10811 genlmsg_end(msg, hdr);
10812 return genlmsg_reply(msg, info);
10813
10814 nla_put_failure:
10815 nlmsg_free(msg);
10816 return -ENOBUFS;
10817 }
10818
10819 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10820 {
10821 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10822 int i, j;
10823 struct cfg80211_coalesce_rules *rule;
10824
10825 if (!coalesce)
10826 return;
10827
10828 for (i = 0; i < coalesce->n_rules; i++) {
10829 rule = &coalesce->rules[i];
10830 for (j = 0; j < rule->n_patterns; j++)
10831 kfree(rule->patterns[j].mask);
10832 kfree(rule->patterns);
10833 }
10834 kfree(coalesce->rules);
10835 kfree(coalesce);
10836 rdev->coalesce = NULL;
10837 }
10838
10839 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10840 struct nlattr *rule,
10841 struct cfg80211_coalesce_rules *new_rule)
10842 {
10843 int err, i;
10844 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10845 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10846 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10847 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10848
10849 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10850 nl80211_coalesce_policy, NULL);
10851 if (err)
10852 return err;
10853
10854 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10855 new_rule->delay =
10856 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10857 if (new_rule->delay > coalesce->max_delay)
10858 return -EINVAL;
10859
10860 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10861 new_rule->condition =
10862 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10863 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10864 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10865 return -EINVAL;
10866
10867 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10868 return -EINVAL;
10869
10870 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10871 rem)
10872 n_patterns++;
10873 if (n_patterns > coalesce->n_patterns)
10874 return -EINVAL;
10875
10876 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10877 GFP_KERNEL);
10878 if (!new_rule->patterns)
10879 return -ENOMEM;
10880
10881 new_rule->n_patterns = n_patterns;
10882 i = 0;
10883
10884 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10885 rem) {
10886 u8 *mask_pat;
10887
10888 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10889 nl80211_packet_pattern_policy, NULL);
10890 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10891 !pat_tb[NL80211_PKTPAT_PATTERN])
10892 return -EINVAL;
10893 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10894 mask_len = DIV_ROUND_UP(pat_len, 8);
10895 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10896 return -EINVAL;
10897 if (pat_len > coalesce->pattern_max_len ||
10898 pat_len < coalesce->pattern_min_len)
10899 return -EINVAL;
10900
10901 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10902 pkt_offset = 0;
10903 else
10904 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10905 if (pkt_offset > coalesce->max_pkt_offset)
10906 return -EINVAL;
10907 new_rule->patterns[i].pkt_offset = pkt_offset;
10908
10909 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10910 if (!mask_pat)
10911 return -ENOMEM;
10912
10913 new_rule->patterns[i].mask = mask_pat;
10914 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10915 mask_len);
10916
10917 mask_pat += mask_len;
10918 new_rule->patterns[i].pattern = mask_pat;
10919 new_rule->patterns[i].pattern_len = pat_len;
10920 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10921 pat_len);
10922 i++;
10923 }
10924
10925 return 0;
10926 }
10927
10928 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10929 {
10930 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10931 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10932 struct cfg80211_coalesce new_coalesce = {};
10933 struct cfg80211_coalesce *n_coalesce;
10934 int err, rem_rule, n_rules = 0, i, j;
10935 struct nlattr *rule;
10936 struct cfg80211_coalesce_rules *tmp_rule;
10937
10938 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10939 return -EOPNOTSUPP;
10940
10941 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10942 cfg80211_rdev_free_coalesce(rdev);
10943 rdev_set_coalesce(rdev, NULL);
10944 return 0;
10945 }
10946
10947 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10948 rem_rule)
10949 n_rules++;
10950 if (n_rules > coalesce->n_rules)
10951 return -EINVAL;
10952
10953 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10954 GFP_KERNEL);
10955 if (!new_coalesce.rules)
10956 return -ENOMEM;
10957
10958 new_coalesce.n_rules = n_rules;
10959 i = 0;
10960
10961 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10962 rem_rule) {
10963 err = nl80211_parse_coalesce_rule(rdev, rule,
10964 &new_coalesce.rules[i]);
10965 if (err)
10966 goto error;
10967
10968 i++;
10969 }
10970
10971 err = rdev_set_coalesce(rdev, &new_coalesce);
10972 if (err)
10973 goto error;
10974
10975 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10976 if (!n_coalesce) {
10977 err = -ENOMEM;
10978 goto error;
10979 }
10980 cfg80211_rdev_free_coalesce(rdev);
10981 rdev->coalesce = n_coalesce;
10982
10983 return 0;
10984 error:
10985 for (i = 0; i < new_coalesce.n_rules; i++) {
10986 tmp_rule = &new_coalesce.rules[i];
10987 for (j = 0; j < tmp_rule->n_patterns; j++)
10988 kfree(tmp_rule->patterns[j].mask);
10989 kfree(tmp_rule->patterns);
10990 }
10991 kfree(new_coalesce.rules);
10992
10993 return err;
10994 }
10995
10996 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10997 {
10998 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10999 struct net_device *dev = info->user_ptr[1];
11000 struct wireless_dev *wdev = dev->ieee80211_ptr;
11001 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
11002 struct cfg80211_gtk_rekey_data rekey_data;
11003 int err;
11004
11005 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
11006 return -EINVAL;
11007
11008 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
11009 info->attrs[NL80211_ATTR_REKEY_DATA],
11010 nl80211_rekey_policy, info->extack);
11011 if (err)
11012 return err;
11013
11014 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
11015 !tb[NL80211_REKEY_DATA_KCK])
11016 return -EINVAL;
11017 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
11018 return -ERANGE;
11019 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
11020 return -ERANGE;
11021 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11022 return -ERANGE;
11023
11024 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11025 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11026 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11027
11028 wdev_lock(wdev);
11029 if (!wdev->current_bss) {
11030 err = -ENOTCONN;
11031 goto out;
11032 }
11033
11034 if (!rdev->ops->set_rekey_data) {
11035 err = -EOPNOTSUPP;
11036 goto out;
11037 }
11038
11039 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11040 out:
11041 wdev_unlock(wdev);
11042 return err;
11043 }
11044
11045 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11046 struct genl_info *info)
11047 {
11048 struct net_device *dev = info->user_ptr[1];
11049 struct wireless_dev *wdev = dev->ieee80211_ptr;
11050
11051 if (wdev->iftype != NL80211_IFTYPE_AP &&
11052 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11053 return -EINVAL;
11054
11055 if (wdev->ap_unexpected_nlportid)
11056 return -EBUSY;
11057
11058 wdev->ap_unexpected_nlportid = info->snd_portid;
11059 return 0;
11060 }
11061
11062 static int nl80211_probe_client(struct sk_buff *skb,
11063 struct genl_info *info)
11064 {
11065 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11066 struct net_device *dev = info->user_ptr[1];
11067 struct wireless_dev *wdev = dev->ieee80211_ptr;
11068 struct sk_buff *msg;
11069 void *hdr;
11070 const u8 *addr;
11071 u64 cookie;
11072 int err;
11073
11074 if (wdev->iftype != NL80211_IFTYPE_AP &&
11075 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11076 return -EOPNOTSUPP;
11077
11078 if (!info->attrs[NL80211_ATTR_MAC])
11079 return -EINVAL;
11080
11081 if (!rdev->ops->probe_client)
11082 return -EOPNOTSUPP;
11083
11084 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11085 if (!msg)
11086 return -ENOMEM;
11087
11088 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11089 NL80211_CMD_PROBE_CLIENT);
11090 if (!hdr) {
11091 err = -ENOBUFS;
11092 goto free_msg;
11093 }
11094
11095 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11096
11097 err = rdev_probe_client(rdev, dev, addr, &cookie);
11098 if (err)
11099 goto free_msg;
11100
11101 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11102 NL80211_ATTR_PAD))
11103 goto nla_put_failure;
11104
11105 genlmsg_end(msg, hdr);
11106
11107 return genlmsg_reply(msg, info);
11108
11109 nla_put_failure:
11110 err = -ENOBUFS;
11111 free_msg:
11112 nlmsg_free(msg);
11113 return err;
11114 }
11115
11116 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11117 {
11118 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11119 struct cfg80211_beacon_registration *reg, *nreg;
11120 int rv;
11121
11122 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11123 return -EOPNOTSUPP;
11124
11125 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11126 if (!nreg)
11127 return -ENOMEM;
11128
11129 /* First, check if already registered. */
11130 spin_lock_bh(&rdev->beacon_registrations_lock);
11131 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11132 if (reg->nlportid == info->snd_portid) {
11133 rv = -EALREADY;
11134 goto out_err;
11135 }
11136 }
11137 /* Add it to the list */
11138 nreg->nlportid = info->snd_portid;
11139 list_add(&nreg->list, &rdev->beacon_registrations);
11140
11141 spin_unlock_bh(&rdev->beacon_registrations_lock);
11142
11143 return 0;
11144 out_err:
11145 spin_unlock_bh(&rdev->beacon_registrations_lock);
11146 kfree(nreg);
11147 return rv;
11148 }
11149
11150 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11151 {
11152 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11153 struct wireless_dev *wdev = info->user_ptr[1];
11154 int err;
11155
11156 if (!rdev->ops->start_p2p_device)
11157 return -EOPNOTSUPP;
11158
11159 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11160 return -EOPNOTSUPP;
11161
11162 if (wdev_running(wdev))
11163 return 0;
11164
11165 if (rfkill_blocked(rdev->rfkill))
11166 return -ERFKILL;
11167
11168 err = rdev_start_p2p_device(rdev, wdev);
11169 if (err)
11170 return err;
11171
11172 wdev->is_running = true;
11173 rdev->opencount++;
11174
11175 return 0;
11176 }
11177
11178 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11179 {
11180 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11181 struct wireless_dev *wdev = info->user_ptr[1];
11182
11183 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11184 return -EOPNOTSUPP;
11185
11186 if (!rdev->ops->stop_p2p_device)
11187 return -EOPNOTSUPP;
11188
11189 cfg80211_stop_p2p_device(rdev, wdev);
11190
11191 return 0;
11192 }
11193
11194 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11195 {
11196 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11197 struct wireless_dev *wdev = info->user_ptr[1];
11198 struct cfg80211_nan_conf conf = {};
11199 int err;
11200
11201 if (wdev->iftype != NL80211_IFTYPE_NAN)
11202 return -EOPNOTSUPP;
11203
11204 if (wdev_running(wdev))
11205 return -EEXIST;
11206
11207 if (rfkill_blocked(rdev->rfkill))
11208 return -ERFKILL;
11209
11210 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11211 return -EINVAL;
11212
11213 conf.master_pref =
11214 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11215 if (!conf.master_pref)
11216 return -EINVAL;
11217
11218 if (info->attrs[NL80211_ATTR_BANDS]) {
11219 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11220
11221 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11222 return -EOPNOTSUPP;
11223
11224 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11225 return -EINVAL;
11226
11227 conf.bands = bands;
11228 }
11229
11230 err = rdev_start_nan(rdev, wdev, &conf);
11231 if (err)
11232 return err;
11233
11234 wdev->is_running = true;
11235 rdev->opencount++;
11236
11237 return 0;
11238 }
11239
11240 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11241 {
11242 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11243 struct wireless_dev *wdev = info->user_ptr[1];
11244
11245 if (wdev->iftype != NL80211_IFTYPE_NAN)
11246 return -EOPNOTSUPP;
11247
11248 cfg80211_stop_nan(rdev, wdev);
11249
11250 return 0;
11251 }
11252
11253 static int validate_nan_filter(struct nlattr *filter_attr)
11254 {
11255 struct nlattr *attr;
11256 int len = 0, n_entries = 0, rem;
11257
11258 nla_for_each_nested(attr, filter_attr, rem) {
11259 len += nla_len(attr);
11260 n_entries++;
11261 }
11262
11263 if (len >= U8_MAX)
11264 return -EINVAL;
11265
11266 return n_entries;
11267 }
11268
11269 static int handle_nan_filter(struct nlattr *attr_filter,
11270 struct cfg80211_nan_func *func,
11271 bool tx)
11272 {
11273 struct nlattr *attr;
11274 int n_entries, rem, i;
11275 struct cfg80211_nan_func_filter *filter;
11276
11277 n_entries = validate_nan_filter(attr_filter);
11278 if (n_entries < 0)
11279 return n_entries;
11280
11281 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11282
11283 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11284 if (!filter)
11285 return -ENOMEM;
11286
11287 i = 0;
11288 nla_for_each_nested(attr, attr_filter, rem) {
11289 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11290 filter[i].len = nla_len(attr);
11291 i++;
11292 }
11293 if (tx) {
11294 func->num_tx_filters = n_entries;
11295 func->tx_filters = filter;
11296 } else {
11297 func->num_rx_filters = n_entries;
11298 func->rx_filters = filter;
11299 }
11300
11301 return 0;
11302 }
11303
11304 static int nl80211_nan_add_func(struct sk_buff *skb,
11305 struct genl_info *info)
11306 {
11307 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11308 struct wireless_dev *wdev = info->user_ptr[1];
11309 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11310 struct cfg80211_nan_func *func;
11311 struct sk_buff *msg = NULL;
11312 void *hdr = NULL;
11313 int err = 0;
11314
11315 if (wdev->iftype != NL80211_IFTYPE_NAN)
11316 return -EOPNOTSUPP;
11317
11318 if (!wdev_running(wdev))
11319 return -ENOTCONN;
11320
11321 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11322 return -EINVAL;
11323
11324 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11325 info->attrs[NL80211_ATTR_NAN_FUNC],
11326 nl80211_nan_func_policy, info->extack);
11327 if (err)
11328 return err;
11329
11330 func = kzalloc(sizeof(*func), GFP_KERNEL);
11331 if (!func)
11332 return -ENOMEM;
11333
11334 func->cookie = wdev->wiphy->cookie_counter++;
11335
11336 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11337 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11338 err = -EINVAL;
11339 goto out;
11340 }
11341
11342
11343 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11344
11345 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11346 err = -EINVAL;
11347 goto out;
11348 }
11349
11350 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11351 sizeof(func->service_id));
11352
11353 func->close_range =
11354 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11355
11356 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11357 func->serv_spec_info_len =
11358 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11359 func->serv_spec_info =
11360 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11361 func->serv_spec_info_len,
11362 GFP_KERNEL);
11363 if (!func->serv_spec_info) {
11364 err = -ENOMEM;
11365 goto out;
11366 }
11367 }
11368
11369 if (tb[NL80211_NAN_FUNC_TTL])
11370 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11371
11372 switch (func->type) {
11373 case NL80211_NAN_FUNC_PUBLISH:
11374 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11375 err = -EINVAL;
11376 goto out;
11377 }
11378
11379 func->publish_type =
11380 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11381 func->publish_bcast =
11382 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11383
11384 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11385 func->publish_bcast) {
11386 err = -EINVAL;
11387 goto out;
11388 }
11389 break;
11390 case NL80211_NAN_FUNC_SUBSCRIBE:
11391 func->subscribe_active =
11392 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11393 break;
11394 case NL80211_NAN_FUNC_FOLLOW_UP:
11395 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11396 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11397 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11398 err = -EINVAL;
11399 goto out;
11400 }
11401
11402 func->followup_id =
11403 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11404 func->followup_reqid =
11405 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11406 memcpy(func->followup_dest.addr,
11407 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11408 sizeof(func->followup_dest.addr));
11409 if (func->ttl) {
11410 err = -EINVAL;
11411 goto out;
11412 }
11413 break;
11414 default:
11415 err = -EINVAL;
11416 goto out;
11417 }
11418
11419 if (tb[NL80211_NAN_FUNC_SRF]) {
11420 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11421
11422 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11423 tb[NL80211_NAN_FUNC_SRF],
11424 nl80211_nan_srf_policy, info->extack);
11425 if (err)
11426 goto out;
11427
11428 func->srf_include =
11429 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11430
11431 if (srf_tb[NL80211_NAN_SRF_BF]) {
11432 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11433 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11434 err = -EINVAL;
11435 goto out;
11436 }
11437
11438 func->srf_bf_len =
11439 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11440 func->srf_bf =
11441 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11442 func->srf_bf_len, GFP_KERNEL);
11443 if (!func->srf_bf) {
11444 err = -ENOMEM;
11445 goto out;
11446 }
11447
11448 func->srf_bf_idx =
11449 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11450 } else {
11451 struct nlattr *attr, *mac_attr =
11452 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11453 int n_entries, rem, i = 0;
11454
11455 if (!mac_attr) {
11456 err = -EINVAL;
11457 goto out;
11458 }
11459
11460 n_entries = validate_acl_mac_addrs(mac_attr);
11461 if (n_entries <= 0) {
11462 err = -EINVAL;
11463 goto out;
11464 }
11465
11466 func->srf_num_macs = n_entries;
11467 func->srf_macs =
11468 kzalloc(sizeof(*func->srf_macs) * n_entries,
11469 GFP_KERNEL);
11470 if (!func->srf_macs) {
11471 err = -ENOMEM;
11472 goto out;
11473 }
11474
11475 nla_for_each_nested(attr, mac_attr, rem)
11476 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11477 sizeof(*func->srf_macs));
11478 }
11479 }
11480
11481 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11482 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11483 func, true);
11484 if (err)
11485 goto out;
11486 }
11487
11488 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11489 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11490 func, false);
11491 if (err)
11492 goto out;
11493 }
11494
11495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11496 if (!msg) {
11497 err = -ENOMEM;
11498 goto out;
11499 }
11500
11501 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11502 NL80211_CMD_ADD_NAN_FUNCTION);
11503 /* This can't really happen - we just allocated 4KB */
11504 if (WARN_ON(!hdr)) {
11505 err = -ENOMEM;
11506 goto out;
11507 }
11508
11509 err = rdev_add_nan_func(rdev, wdev, func);
11510 out:
11511 if (err < 0) {
11512 cfg80211_free_nan_func(func);
11513 nlmsg_free(msg);
11514 return err;
11515 }
11516
11517 /* propagate the instance id and cookie to userspace */
11518 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11519 NL80211_ATTR_PAD))
11520 goto nla_put_failure;
11521
11522 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11523 if (!func_attr)
11524 goto nla_put_failure;
11525
11526 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11527 func->instance_id))
11528 goto nla_put_failure;
11529
11530 nla_nest_end(msg, func_attr);
11531
11532 genlmsg_end(msg, hdr);
11533 return genlmsg_reply(msg, info);
11534
11535 nla_put_failure:
11536 nlmsg_free(msg);
11537 return -ENOBUFS;
11538 }
11539
11540 static int nl80211_nan_del_func(struct sk_buff *skb,
11541 struct genl_info *info)
11542 {
11543 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11544 struct wireless_dev *wdev = info->user_ptr[1];
11545 u64 cookie;
11546
11547 if (wdev->iftype != NL80211_IFTYPE_NAN)
11548 return -EOPNOTSUPP;
11549
11550 if (!wdev_running(wdev))
11551 return -ENOTCONN;
11552
11553 if (!info->attrs[NL80211_ATTR_COOKIE])
11554 return -EINVAL;
11555
11556 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11557
11558 rdev_del_nan_func(rdev, wdev, cookie);
11559
11560 return 0;
11561 }
11562
11563 static int nl80211_nan_change_config(struct sk_buff *skb,
11564 struct genl_info *info)
11565 {
11566 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11567 struct wireless_dev *wdev = info->user_ptr[1];
11568 struct cfg80211_nan_conf conf = {};
11569 u32 changed = 0;
11570
11571 if (wdev->iftype != NL80211_IFTYPE_NAN)
11572 return -EOPNOTSUPP;
11573
11574 if (!wdev_running(wdev))
11575 return -ENOTCONN;
11576
11577 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11578 conf.master_pref =
11579 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11580 if (conf.master_pref <= 1 || conf.master_pref == 255)
11581 return -EINVAL;
11582
11583 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11584 }
11585
11586 if (info->attrs[NL80211_ATTR_BANDS]) {
11587 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11588
11589 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11590 return -EOPNOTSUPP;
11591
11592 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11593 return -EINVAL;
11594
11595 conf.bands = bands;
11596 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11597 }
11598
11599 if (!changed)
11600 return -EINVAL;
11601
11602 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11603 }
11604
11605 void cfg80211_nan_match(struct wireless_dev *wdev,
11606 struct cfg80211_nan_match_params *match, gfp_t gfp)
11607 {
11608 struct wiphy *wiphy = wdev->wiphy;
11609 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11610 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11611 struct sk_buff *msg;
11612 void *hdr;
11613
11614 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11615 return;
11616
11617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11618 if (!msg)
11619 return;
11620
11621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11622 if (!hdr) {
11623 nlmsg_free(msg);
11624 return;
11625 }
11626
11627 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11628 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11629 wdev->netdev->ifindex)) ||
11630 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11631 NL80211_ATTR_PAD))
11632 goto nla_put_failure;
11633
11634 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11635 NL80211_ATTR_PAD) ||
11636 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11637 goto nla_put_failure;
11638
11639 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11640 if (!match_attr)
11641 goto nla_put_failure;
11642
11643 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11644 if (!local_func_attr)
11645 goto nla_put_failure;
11646
11647 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11648 goto nla_put_failure;
11649
11650 nla_nest_end(msg, local_func_attr);
11651
11652 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11653 if (!peer_func_attr)
11654 goto nla_put_failure;
11655
11656 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11657 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11658 goto nla_put_failure;
11659
11660 if (match->info && match->info_len &&
11661 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11662 match->info))
11663 goto nla_put_failure;
11664
11665 nla_nest_end(msg, peer_func_attr);
11666 nla_nest_end(msg, match_attr);
11667 genlmsg_end(msg, hdr);
11668
11669 if (!wdev->owner_nlportid)
11670 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11671 msg, 0, NL80211_MCGRP_NAN, gfp);
11672 else
11673 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11674 wdev->owner_nlportid);
11675
11676 return;
11677
11678 nla_put_failure:
11679 nlmsg_free(msg);
11680 }
11681 EXPORT_SYMBOL(cfg80211_nan_match);
11682
11683 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11684 u8 inst_id,
11685 enum nl80211_nan_func_term_reason reason,
11686 u64 cookie, gfp_t gfp)
11687 {
11688 struct wiphy *wiphy = wdev->wiphy;
11689 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11690 struct sk_buff *msg;
11691 struct nlattr *func_attr;
11692 void *hdr;
11693
11694 if (WARN_ON(!inst_id))
11695 return;
11696
11697 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11698 if (!msg)
11699 return;
11700
11701 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11702 if (!hdr) {
11703 nlmsg_free(msg);
11704 return;
11705 }
11706
11707 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11708 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11709 wdev->netdev->ifindex)) ||
11710 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11711 NL80211_ATTR_PAD))
11712 goto nla_put_failure;
11713
11714 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11715 NL80211_ATTR_PAD))
11716 goto nla_put_failure;
11717
11718 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11719 if (!func_attr)
11720 goto nla_put_failure;
11721
11722 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11723 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11724 goto nla_put_failure;
11725
11726 nla_nest_end(msg, func_attr);
11727 genlmsg_end(msg, hdr);
11728
11729 if (!wdev->owner_nlportid)
11730 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11731 msg, 0, NL80211_MCGRP_NAN, gfp);
11732 else
11733 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11734 wdev->owner_nlportid);
11735
11736 return;
11737
11738 nla_put_failure:
11739 nlmsg_free(msg);
11740 }
11741 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11742
11743 static int nl80211_get_protocol_features(struct sk_buff *skb,
11744 struct genl_info *info)
11745 {
11746 void *hdr;
11747 struct sk_buff *msg;
11748
11749 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11750 if (!msg)
11751 return -ENOMEM;
11752
11753 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11754 NL80211_CMD_GET_PROTOCOL_FEATURES);
11755 if (!hdr)
11756 goto nla_put_failure;
11757
11758 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11759 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11760 goto nla_put_failure;
11761
11762 genlmsg_end(msg, hdr);
11763 return genlmsg_reply(msg, info);
11764
11765 nla_put_failure:
11766 kfree_skb(msg);
11767 return -ENOBUFS;
11768 }
11769
11770 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11771 {
11772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11773 struct cfg80211_update_ft_ies_params ft_params;
11774 struct net_device *dev = info->user_ptr[1];
11775
11776 if (!rdev->ops->update_ft_ies)
11777 return -EOPNOTSUPP;
11778
11779 if (!info->attrs[NL80211_ATTR_MDID] ||
11780 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11781 return -EINVAL;
11782
11783 memset(&ft_params, 0, sizeof(ft_params));
11784 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11785 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11786 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11787
11788 return rdev_update_ft_ies(rdev, dev, &ft_params);
11789 }
11790
11791 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11792 struct genl_info *info)
11793 {
11794 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11795 struct wireless_dev *wdev = info->user_ptr[1];
11796 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11797 u16 duration;
11798 int ret;
11799
11800 if (!rdev->ops->crit_proto_start)
11801 return -EOPNOTSUPP;
11802
11803 if (WARN_ON(!rdev->ops->crit_proto_stop))
11804 return -EINVAL;
11805
11806 if (rdev->crit_proto_nlportid)
11807 return -EBUSY;
11808
11809 /* determine protocol if provided */
11810 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11811 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11812
11813 if (proto >= NUM_NL80211_CRIT_PROTO)
11814 return -EINVAL;
11815
11816 /* timeout must be provided */
11817 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11818 return -EINVAL;
11819
11820 duration =
11821 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11822
11823 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11824 return -ERANGE;
11825
11826 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11827 if (!ret)
11828 rdev->crit_proto_nlportid = info->snd_portid;
11829
11830 return ret;
11831 }
11832
11833 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11834 struct genl_info *info)
11835 {
11836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11837 struct wireless_dev *wdev = info->user_ptr[1];
11838
11839 if (!rdev->ops->crit_proto_stop)
11840 return -EOPNOTSUPP;
11841
11842 if (rdev->crit_proto_nlportid) {
11843 rdev->crit_proto_nlportid = 0;
11844 rdev_crit_proto_stop(rdev, wdev);
11845 }
11846 return 0;
11847 }
11848
11849 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11850 {
11851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11852 struct wireless_dev *wdev =
11853 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11854 int i, err;
11855 u32 vid, subcmd;
11856
11857 if (!rdev->wiphy.vendor_commands)
11858 return -EOPNOTSUPP;
11859
11860 if (IS_ERR(wdev)) {
11861 err = PTR_ERR(wdev);
11862 if (err != -EINVAL)
11863 return err;
11864 wdev = NULL;
11865 } else if (wdev->wiphy != &rdev->wiphy) {
11866 return -EINVAL;
11867 }
11868
11869 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11870 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11871 return -EINVAL;
11872
11873 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11874 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11875 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11876 const struct wiphy_vendor_command *vcmd;
11877 void *data = NULL;
11878 int len = 0;
11879
11880 vcmd = &rdev->wiphy.vendor_commands[i];
11881
11882 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11883 continue;
11884
11885 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11886 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11887 if (!wdev)
11888 return -EINVAL;
11889 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11890 !wdev->netdev)
11891 return -EINVAL;
11892
11893 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11894 if (!wdev_running(wdev))
11895 return -ENETDOWN;
11896 }
11897
11898 if (!vcmd->doit)
11899 return -EOPNOTSUPP;
11900 } else {
11901 wdev = NULL;
11902 }
11903
11904 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11905 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11906 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11907 }
11908
11909 rdev->cur_cmd_info = info;
11910 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11911 data, len);
11912 rdev->cur_cmd_info = NULL;
11913 return err;
11914 }
11915
11916 return -EOPNOTSUPP;
11917 }
11918
11919 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11920 struct netlink_callback *cb,
11921 struct cfg80211_registered_device **rdev,
11922 struct wireless_dev **wdev)
11923 {
11924 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11925 u32 vid, subcmd;
11926 unsigned int i;
11927 int vcmd_idx = -1;
11928 int err;
11929 void *data = NULL;
11930 unsigned int data_len = 0;
11931
11932 if (cb->args[0]) {
11933 /* subtract the 1 again here */
11934 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11935 struct wireless_dev *tmp;
11936
11937 if (!wiphy)
11938 return -ENODEV;
11939 *rdev = wiphy_to_rdev(wiphy);
11940 *wdev = NULL;
11941
11942 if (cb->args[1]) {
11943 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11944 if (tmp->identifier == cb->args[1] - 1) {
11945 *wdev = tmp;
11946 break;
11947 }
11948 }
11949 }
11950
11951 /* keep rtnl locked in successful case */
11952 return 0;
11953 }
11954
11955 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11956 nl80211_fam.maxattr, nl80211_policy, NULL);
11957 if (err)
11958 return err;
11959
11960 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11961 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11962 return -EINVAL;
11963
11964 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11965 if (IS_ERR(*wdev))
11966 *wdev = NULL;
11967
11968 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11969 if (IS_ERR(*rdev))
11970 return PTR_ERR(*rdev);
11971
11972 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11973 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11974
11975 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11976 const struct wiphy_vendor_command *vcmd;
11977
11978 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11979
11980 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11981 continue;
11982
11983 if (!vcmd->dumpit)
11984 return -EOPNOTSUPP;
11985
11986 vcmd_idx = i;
11987 break;
11988 }
11989
11990 if (vcmd_idx < 0)
11991 return -EOPNOTSUPP;
11992
11993 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11994 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11995 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11996 }
11997
11998 /* 0 is the first index - add 1 to parse only once */
11999 cb->args[0] = (*rdev)->wiphy_idx + 1;
12000 /* add 1 to know if it was NULL */
12001 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
12002 cb->args[2] = vcmd_idx;
12003 cb->args[3] = (unsigned long)data;
12004 cb->args[4] = data_len;
12005
12006 /* keep rtnl locked in successful case */
12007 return 0;
12008 }
12009
12010 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
12011 struct netlink_callback *cb)
12012 {
12013 struct cfg80211_registered_device *rdev;
12014 struct wireless_dev *wdev;
12015 unsigned int vcmd_idx;
12016 const struct wiphy_vendor_command *vcmd;
12017 void *data;
12018 int data_len;
12019 int err;
12020 struct nlattr *vendor_data;
12021
12022 rtnl_lock();
12023 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12024 if (err)
12025 goto out;
12026
12027 vcmd_idx = cb->args[2];
12028 data = (void *)cb->args[3];
12029 data_len = cb->args[4];
12030 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12031
12032 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12033 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12034 if (!wdev) {
12035 err = -EINVAL;
12036 goto out;
12037 }
12038 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12039 !wdev->netdev) {
12040 err = -EINVAL;
12041 goto out;
12042 }
12043
12044 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12045 if (!wdev_running(wdev)) {
12046 err = -ENETDOWN;
12047 goto out;
12048 }
12049 }
12050 }
12051
12052 while (1) {
12053 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12054 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12055 NL80211_CMD_VENDOR);
12056 if (!hdr)
12057 break;
12058
12059 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12060 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12061 wdev_id(wdev),
12062 NL80211_ATTR_PAD))) {
12063 genlmsg_cancel(skb, hdr);
12064 break;
12065 }
12066
12067 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12068 if (!vendor_data) {
12069 genlmsg_cancel(skb, hdr);
12070 break;
12071 }
12072
12073 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12074 (unsigned long *)&cb->args[5]);
12075 nla_nest_end(skb, vendor_data);
12076
12077 if (err == -ENOBUFS || err == -ENOENT) {
12078 genlmsg_cancel(skb, hdr);
12079 break;
12080 } else if (err) {
12081 genlmsg_cancel(skb, hdr);
12082 goto out;
12083 }
12084
12085 genlmsg_end(skb, hdr);
12086 }
12087
12088 err = skb->len;
12089 out:
12090 rtnl_unlock();
12091 return err;
12092 }
12093
12094 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12095 enum nl80211_commands cmd,
12096 enum nl80211_attrs attr,
12097 int approxlen)
12098 {
12099 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12100
12101 if (WARN_ON(!rdev->cur_cmd_info))
12102 return NULL;
12103
12104 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12105 rdev->cur_cmd_info->snd_portid,
12106 rdev->cur_cmd_info->snd_seq,
12107 cmd, attr, NULL, GFP_KERNEL);
12108 }
12109 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12110
12111 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12112 {
12113 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12114 void *hdr = ((void **)skb->cb)[1];
12115 struct nlattr *data = ((void **)skb->cb)[2];
12116
12117 /* clear CB data for netlink core to own from now on */
12118 memset(skb->cb, 0, sizeof(skb->cb));
12119
12120 if (WARN_ON(!rdev->cur_cmd_info)) {
12121 kfree_skb(skb);
12122 return -EINVAL;
12123 }
12124
12125 nla_nest_end(skb, data);
12126 genlmsg_end(skb, hdr);
12127 return genlmsg_reply(skb, rdev->cur_cmd_info);
12128 }
12129 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12130
12131 static int nl80211_set_qos_map(struct sk_buff *skb,
12132 struct genl_info *info)
12133 {
12134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12135 struct cfg80211_qos_map *qos_map = NULL;
12136 struct net_device *dev = info->user_ptr[1];
12137 u8 *pos, len, num_des, des_len, des;
12138 int ret;
12139
12140 if (!rdev->ops->set_qos_map)
12141 return -EOPNOTSUPP;
12142
12143 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12144 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12145 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12146
12147 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12148 len > IEEE80211_QOS_MAP_LEN_MAX)
12149 return -EINVAL;
12150
12151 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12152 if (!qos_map)
12153 return -ENOMEM;
12154
12155 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12156 if (num_des) {
12157 des_len = num_des *
12158 sizeof(struct cfg80211_dscp_exception);
12159 memcpy(qos_map->dscp_exception, pos, des_len);
12160 qos_map->num_des = num_des;
12161 for (des = 0; des < num_des; des++) {
12162 if (qos_map->dscp_exception[des].up > 7) {
12163 kfree(qos_map);
12164 return -EINVAL;
12165 }
12166 }
12167 pos += des_len;
12168 }
12169 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12170 }
12171
12172 wdev_lock(dev->ieee80211_ptr);
12173 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12174 if (!ret)
12175 ret = rdev_set_qos_map(rdev, dev, qos_map);
12176 wdev_unlock(dev->ieee80211_ptr);
12177
12178 kfree(qos_map);
12179 return ret;
12180 }
12181
12182 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12183 {
12184 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12185 struct net_device *dev = info->user_ptr[1];
12186 struct wireless_dev *wdev = dev->ieee80211_ptr;
12187 const u8 *peer;
12188 u8 tsid, up;
12189 u16 admitted_time = 0;
12190 int err;
12191
12192 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12193 return -EOPNOTSUPP;
12194
12195 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12196 !info->attrs[NL80211_ATTR_USER_PRIO])
12197 return -EINVAL;
12198
12199 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12200 if (tsid >= IEEE80211_NUM_TIDS)
12201 return -EINVAL;
12202
12203 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12204 if (up >= IEEE80211_NUM_UPS)
12205 return -EINVAL;
12206
12207 /* WMM uses TIDs 0-7 even for TSPEC */
12208 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12209 /* TODO: handle 802.11 TSPEC/admission control
12210 * need more attributes for that (e.g. BA session requirement);
12211 * change the WMM adminssion test above to allow both then
12212 */
12213 return -EINVAL;
12214 }
12215
12216 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12217
12218 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12219 admitted_time =
12220 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12221 if (!admitted_time)
12222 return -EINVAL;
12223 }
12224
12225 wdev_lock(wdev);
12226 switch (wdev->iftype) {
12227 case NL80211_IFTYPE_STATION:
12228 case NL80211_IFTYPE_P2P_CLIENT:
12229 if (wdev->current_bss)
12230 break;
12231 err = -ENOTCONN;
12232 goto out;
12233 default:
12234 err = -EOPNOTSUPP;
12235 goto out;
12236 }
12237
12238 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12239
12240 out:
12241 wdev_unlock(wdev);
12242 return err;
12243 }
12244
12245 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12246 {
12247 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12248 struct net_device *dev = info->user_ptr[1];
12249 struct wireless_dev *wdev = dev->ieee80211_ptr;
12250 const u8 *peer;
12251 u8 tsid;
12252 int err;
12253
12254 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12255 return -EINVAL;
12256
12257 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12258 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12259
12260 wdev_lock(wdev);
12261 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12262 wdev_unlock(wdev);
12263
12264 return err;
12265 }
12266
12267 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12268 struct genl_info *info)
12269 {
12270 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12271 struct net_device *dev = info->user_ptr[1];
12272 struct wireless_dev *wdev = dev->ieee80211_ptr;
12273 struct cfg80211_chan_def chandef = {};
12274 const u8 *addr;
12275 u8 oper_class;
12276 int err;
12277
12278 if (!rdev->ops->tdls_channel_switch ||
12279 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12280 return -EOPNOTSUPP;
12281
12282 switch (dev->ieee80211_ptr->iftype) {
12283 case NL80211_IFTYPE_STATION:
12284 case NL80211_IFTYPE_P2P_CLIENT:
12285 break;
12286 default:
12287 return -EOPNOTSUPP;
12288 }
12289
12290 if (!info->attrs[NL80211_ATTR_MAC] ||
12291 !info->attrs[NL80211_ATTR_OPER_CLASS])
12292 return -EINVAL;
12293
12294 err = nl80211_parse_chandef(rdev, info, &chandef);
12295 if (err)
12296 return err;
12297
12298 /*
12299 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12300 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12301 * specification is not defined for them.
12302 */
12303 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12304 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12305 chandef.width != NL80211_CHAN_WIDTH_20)
12306 return -EINVAL;
12307
12308 /* we will be active on the TDLS link */
12309 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12310 wdev->iftype))
12311 return -EINVAL;
12312
12313 /* don't allow switching to DFS channels */
12314 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12315 return -EINVAL;
12316
12317 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12318 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12319
12320 wdev_lock(wdev);
12321 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12322 wdev_unlock(wdev);
12323
12324 return err;
12325 }
12326
12327 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12328 struct genl_info *info)
12329 {
12330 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12331 struct net_device *dev = info->user_ptr[1];
12332 struct wireless_dev *wdev = dev->ieee80211_ptr;
12333 const u8 *addr;
12334
12335 if (!rdev->ops->tdls_channel_switch ||
12336 !rdev->ops->tdls_cancel_channel_switch ||
12337 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12338 return -EOPNOTSUPP;
12339
12340 switch (dev->ieee80211_ptr->iftype) {
12341 case NL80211_IFTYPE_STATION:
12342 case NL80211_IFTYPE_P2P_CLIENT:
12343 break;
12344 default:
12345 return -EOPNOTSUPP;
12346 }
12347
12348 if (!info->attrs[NL80211_ATTR_MAC])
12349 return -EINVAL;
12350
12351 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12352
12353 wdev_lock(wdev);
12354 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12355 wdev_unlock(wdev);
12356
12357 return 0;
12358 }
12359
12360 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12361 struct genl_info *info)
12362 {
12363 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12364 struct net_device *dev = info->user_ptr[1];
12365 struct wireless_dev *wdev = dev->ieee80211_ptr;
12366 const struct nlattr *nla;
12367 bool enabled;
12368
12369 if (!rdev->ops->set_multicast_to_unicast)
12370 return -EOPNOTSUPP;
12371
12372 if (wdev->iftype != NL80211_IFTYPE_AP &&
12373 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12374 return -EOPNOTSUPP;
12375
12376 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12377 enabled = nla_get_flag(nla);
12378
12379 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12380 }
12381
12382 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12383 {
12384 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12385 struct net_device *dev = info->user_ptr[1];
12386 struct wireless_dev *wdev = dev->ieee80211_ptr;
12387 struct cfg80211_pmk_conf pmk_conf = {};
12388 int ret;
12389
12390 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12391 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12392 return -EOPNOTSUPP;
12393
12394 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12395 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12396 return -EOPNOTSUPP;
12397
12398 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12399 return -EINVAL;
12400
12401 wdev_lock(wdev);
12402 if (!wdev->current_bss) {
12403 ret = -ENOTCONN;
12404 goto out;
12405 }
12406
12407 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12408 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12409 ret = -EINVAL;
12410 goto out;
12411 }
12412
12413 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12414 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12415 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12416 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12417 ret = -EINVAL;
12418 goto out;
12419 }
12420
12421 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12422 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12423
12424 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12425 ret = -EINVAL;
12426 goto out;
12427 }
12428
12429 pmk_conf.pmk_r0_name =
12430 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12431 }
12432
12433 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12434 out:
12435 wdev_unlock(wdev);
12436 return ret;
12437 }
12438
12439 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12440 {
12441 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12442 struct net_device *dev = info->user_ptr[1];
12443 struct wireless_dev *wdev = dev->ieee80211_ptr;
12444 const u8 *aa;
12445 int ret;
12446
12447 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12448 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12449 return -EOPNOTSUPP;
12450
12451 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12452 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12453 return -EOPNOTSUPP;
12454
12455 if (!info->attrs[NL80211_ATTR_MAC])
12456 return -EINVAL;
12457
12458 wdev_lock(wdev);
12459 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12460 ret = rdev_del_pmk(rdev, dev, aa);
12461 wdev_unlock(wdev);
12462
12463 return ret;
12464 }
12465
12466 #define NL80211_FLAG_NEED_WIPHY 0x01
12467 #define NL80211_FLAG_NEED_NETDEV 0x02
12468 #define NL80211_FLAG_NEED_RTNL 0x04
12469 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12470 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12471 NL80211_FLAG_CHECK_NETDEV_UP)
12472 #define NL80211_FLAG_NEED_WDEV 0x10
12473 /* If a netdev is associated, it must be UP, P2P must be started */
12474 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12475 NL80211_FLAG_CHECK_NETDEV_UP)
12476 #define NL80211_FLAG_CLEAR_SKB 0x20
12477
12478 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12479 struct genl_info *info)
12480 {
12481 struct cfg80211_registered_device *rdev;
12482 struct wireless_dev *wdev;
12483 struct net_device *dev;
12484 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12485
12486 if (rtnl)
12487 rtnl_lock();
12488
12489 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12490 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12491 if (IS_ERR(rdev)) {
12492 if (rtnl)
12493 rtnl_unlock();
12494 return PTR_ERR(rdev);
12495 }
12496 info->user_ptr[0] = rdev;
12497 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12498 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12499 ASSERT_RTNL();
12500
12501 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12502 info->attrs);
12503 if (IS_ERR(wdev)) {
12504 if (rtnl)
12505 rtnl_unlock();
12506 return PTR_ERR(wdev);
12507 }
12508
12509 dev = wdev->netdev;
12510 rdev = wiphy_to_rdev(wdev->wiphy);
12511
12512 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12513 if (!dev) {
12514 if (rtnl)
12515 rtnl_unlock();
12516 return -EINVAL;
12517 }
12518
12519 info->user_ptr[1] = dev;
12520 } else {
12521 info->user_ptr[1] = wdev;
12522 }
12523
12524 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12525 !wdev_running(wdev)) {
12526 if (rtnl)
12527 rtnl_unlock();
12528 return -ENETDOWN;
12529 }
12530
12531 if (dev)
12532 dev_hold(dev);
12533
12534 info->user_ptr[0] = rdev;
12535 }
12536
12537 return 0;
12538 }
12539
12540 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12541 struct genl_info *info)
12542 {
12543 if (info->user_ptr[1]) {
12544 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12545 struct wireless_dev *wdev = info->user_ptr[1];
12546
12547 if (wdev->netdev)
12548 dev_put(wdev->netdev);
12549 } else {
12550 dev_put(info->user_ptr[1]);
12551 }
12552 }
12553
12554 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12555 rtnl_unlock();
12556
12557 /* If needed, clear the netlink message payload from the SKB
12558 * as it might contain key data that shouldn't stick around on
12559 * the heap after the SKB is freed. The netlink message header
12560 * is still needed for further processing, so leave it intact.
12561 */
12562 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12563 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12564
12565 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12566 }
12567 }
12568
12569 static const struct genl_ops nl80211_ops[] = {
12570 {
12571 .cmd = NL80211_CMD_GET_WIPHY,
12572 .doit = nl80211_get_wiphy,
12573 .dumpit = nl80211_dump_wiphy,
12574 .done = nl80211_dump_wiphy_done,
12575 .policy = nl80211_policy,
12576 /* can be retrieved by unprivileged users */
12577 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12578 NL80211_FLAG_NEED_RTNL,
12579 },
12580 {
12581 .cmd = NL80211_CMD_SET_WIPHY,
12582 .doit = nl80211_set_wiphy,
12583 .policy = nl80211_policy,
12584 .flags = GENL_UNS_ADMIN_PERM,
12585 .internal_flags = NL80211_FLAG_NEED_RTNL,
12586 },
12587 {
12588 .cmd = NL80211_CMD_GET_INTERFACE,
12589 .doit = nl80211_get_interface,
12590 .dumpit = nl80211_dump_interface,
12591 .policy = nl80211_policy,
12592 /* can be retrieved by unprivileged users */
12593 .internal_flags = NL80211_FLAG_NEED_WDEV |
12594 NL80211_FLAG_NEED_RTNL,
12595 },
12596 {
12597 .cmd = NL80211_CMD_SET_INTERFACE,
12598 .doit = nl80211_set_interface,
12599 .policy = nl80211_policy,
12600 .flags = GENL_UNS_ADMIN_PERM,
12601 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12602 NL80211_FLAG_NEED_RTNL,
12603 },
12604 {
12605 .cmd = NL80211_CMD_NEW_INTERFACE,
12606 .doit = nl80211_new_interface,
12607 .policy = nl80211_policy,
12608 .flags = GENL_UNS_ADMIN_PERM,
12609 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12610 NL80211_FLAG_NEED_RTNL,
12611 },
12612 {
12613 .cmd = NL80211_CMD_DEL_INTERFACE,
12614 .doit = nl80211_del_interface,
12615 .policy = nl80211_policy,
12616 .flags = GENL_UNS_ADMIN_PERM,
12617 .internal_flags = NL80211_FLAG_NEED_WDEV |
12618 NL80211_FLAG_NEED_RTNL,
12619 },
12620 {
12621 .cmd = NL80211_CMD_GET_KEY,
12622 .doit = nl80211_get_key,
12623 .policy = nl80211_policy,
12624 .flags = GENL_UNS_ADMIN_PERM,
12625 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12626 NL80211_FLAG_NEED_RTNL,
12627 },
12628 {
12629 .cmd = NL80211_CMD_SET_KEY,
12630 .doit = nl80211_set_key,
12631 .policy = nl80211_policy,
12632 .flags = GENL_UNS_ADMIN_PERM,
12633 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12634 NL80211_FLAG_NEED_RTNL |
12635 NL80211_FLAG_CLEAR_SKB,
12636 },
12637 {
12638 .cmd = NL80211_CMD_NEW_KEY,
12639 .doit = nl80211_new_key,
12640 .policy = nl80211_policy,
12641 .flags = GENL_UNS_ADMIN_PERM,
12642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12643 NL80211_FLAG_NEED_RTNL |
12644 NL80211_FLAG_CLEAR_SKB,
12645 },
12646 {
12647 .cmd = NL80211_CMD_DEL_KEY,
12648 .doit = nl80211_del_key,
12649 .policy = nl80211_policy,
12650 .flags = GENL_UNS_ADMIN_PERM,
12651 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12652 NL80211_FLAG_NEED_RTNL,
12653 },
12654 {
12655 .cmd = NL80211_CMD_SET_BEACON,
12656 .policy = nl80211_policy,
12657 .flags = GENL_UNS_ADMIN_PERM,
12658 .doit = nl80211_set_beacon,
12659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12660 NL80211_FLAG_NEED_RTNL,
12661 },
12662 {
12663 .cmd = NL80211_CMD_START_AP,
12664 .policy = nl80211_policy,
12665 .flags = GENL_UNS_ADMIN_PERM,
12666 .doit = nl80211_start_ap,
12667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12668 NL80211_FLAG_NEED_RTNL,
12669 },
12670 {
12671 .cmd = NL80211_CMD_STOP_AP,
12672 .policy = nl80211_policy,
12673 .flags = GENL_UNS_ADMIN_PERM,
12674 .doit = nl80211_stop_ap,
12675 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12676 NL80211_FLAG_NEED_RTNL,
12677 },
12678 {
12679 .cmd = NL80211_CMD_GET_STATION,
12680 .doit = nl80211_get_station,
12681 .dumpit = nl80211_dump_station,
12682 .policy = nl80211_policy,
12683 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12684 NL80211_FLAG_NEED_RTNL,
12685 },
12686 {
12687 .cmd = NL80211_CMD_SET_STATION,
12688 .doit = nl80211_set_station,
12689 .policy = nl80211_policy,
12690 .flags = GENL_UNS_ADMIN_PERM,
12691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12692 NL80211_FLAG_NEED_RTNL,
12693 },
12694 {
12695 .cmd = NL80211_CMD_NEW_STATION,
12696 .doit = nl80211_new_station,
12697 .policy = nl80211_policy,
12698 .flags = GENL_UNS_ADMIN_PERM,
12699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12700 NL80211_FLAG_NEED_RTNL,
12701 },
12702 {
12703 .cmd = NL80211_CMD_DEL_STATION,
12704 .doit = nl80211_del_station,
12705 .policy = nl80211_policy,
12706 .flags = GENL_UNS_ADMIN_PERM,
12707 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12708 NL80211_FLAG_NEED_RTNL,
12709 },
12710 {
12711 .cmd = NL80211_CMD_GET_MPATH,
12712 .doit = nl80211_get_mpath,
12713 .dumpit = nl80211_dump_mpath,
12714 .policy = nl80211_policy,
12715 .flags = GENL_UNS_ADMIN_PERM,
12716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12717 NL80211_FLAG_NEED_RTNL,
12718 },
12719 {
12720 .cmd = NL80211_CMD_GET_MPP,
12721 .doit = nl80211_get_mpp,
12722 .dumpit = nl80211_dump_mpp,
12723 .policy = nl80211_policy,
12724 .flags = GENL_UNS_ADMIN_PERM,
12725 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12726 NL80211_FLAG_NEED_RTNL,
12727 },
12728 {
12729 .cmd = NL80211_CMD_SET_MPATH,
12730 .doit = nl80211_set_mpath,
12731 .policy = nl80211_policy,
12732 .flags = GENL_UNS_ADMIN_PERM,
12733 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12734 NL80211_FLAG_NEED_RTNL,
12735 },
12736 {
12737 .cmd = NL80211_CMD_NEW_MPATH,
12738 .doit = nl80211_new_mpath,
12739 .policy = nl80211_policy,
12740 .flags = GENL_UNS_ADMIN_PERM,
12741 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12742 NL80211_FLAG_NEED_RTNL,
12743 },
12744 {
12745 .cmd = NL80211_CMD_DEL_MPATH,
12746 .doit = nl80211_del_mpath,
12747 .policy = nl80211_policy,
12748 .flags = GENL_UNS_ADMIN_PERM,
12749 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12750 NL80211_FLAG_NEED_RTNL,
12751 },
12752 {
12753 .cmd = NL80211_CMD_SET_BSS,
12754 .doit = nl80211_set_bss,
12755 .policy = nl80211_policy,
12756 .flags = GENL_UNS_ADMIN_PERM,
12757 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12758 NL80211_FLAG_NEED_RTNL,
12759 },
12760 {
12761 .cmd = NL80211_CMD_GET_REG,
12762 .doit = nl80211_get_reg_do,
12763 .dumpit = nl80211_get_reg_dump,
12764 .policy = nl80211_policy,
12765 .internal_flags = NL80211_FLAG_NEED_RTNL,
12766 /* can be retrieved by unprivileged users */
12767 },
12768 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12769 {
12770 .cmd = NL80211_CMD_SET_REG,
12771 .doit = nl80211_set_reg,
12772 .policy = nl80211_policy,
12773 .flags = GENL_ADMIN_PERM,
12774 .internal_flags = NL80211_FLAG_NEED_RTNL,
12775 },
12776 #endif
12777 {
12778 .cmd = NL80211_CMD_REQ_SET_REG,
12779 .doit = nl80211_req_set_reg,
12780 .policy = nl80211_policy,
12781 .flags = GENL_ADMIN_PERM,
12782 },
12783 {
12784 .cmd = NL80211_CMD_RELOAD_REGDB,
12785 .doit = nl80211_reload_regdb,
12786 .policy = nl80211_policy,
12787 .flags = GENL_ADMIN_PERM,
12788 },
12789 {
12790 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12791 .doit = nl80211_get_mesh_config,
12792 .policy = nl80211_policy,
12793 /* can be retrieved by unprivileged users */
12794 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12795 NL80211_FLAG_NEED_RTNL,
12796 },
12797 {
12798 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12799 .doit = nl80211_update_mesh_config,
12800 .policy = nl80211_policy,
12801 .flags = GENL_UNS_ADMIN_PERM,
12802 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12803 NL80211_FLAG_NEED_RTNL,
12804 },
12805 {
12806 .cmd = NL80211_CMD_TRIGGER_SCAN,
12807 .doit = nl80211_trigger_scan,
12808 .policy = nl80211_policy,
12809 .flags = GENL_UNS_ADMIN_PERM,
12810 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12811 NL80211_FLAG_NEED_RTNL,
12812 },
12813 {
12814 .cmd = NL80211_CMD_ABORT_SCAN,
12815 .doit = nl80211_abort_scan,
12816 .policy = nl80211_policy,
12817 .flags = GENL_UNS_ADMIN_PERM,
12818 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12819 NL80211_FLAG_NEED_RTNL,
12820 },
12821 {
12822 .cmd = NL80211_CMD_GET_SCAN,
12823 .policy = nl80211_policy,
12824 .dumpit = nl80211_dump_scan,
12825 },
12826 {
12827 .cmd = NL80211_CMD_START_SCHED_SCAN,
12828 .doit = nl80211_start_sched_scan,
12829 .policy = nl80211_policy,
12830 .flags = GENL_UNS_ADMIN_PERM,
12831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12832 NL80211_FLAG_NEED_RTNL,
12833 },
12834 {
12835 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12836 .doit = nl80211_stop_sched_scan,
12837 .policy = nl80211_policy,
12838 .flags = GENL_UNS_ADMIN_PERM,
12839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12840 NL80211_FLAG_NEED_RTNL,
12841 },
12842 {
12843 .cmd = NL80211_CMD_AUTHENTICATE,
12844 .doit = nl80211_authenticate,
12845 .policy = nl80211_policy,
12846 .flags = GENL_UNS_ADMIN_PERM,
12847 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12848 NL80211_FLAG_NEED_RTNL |
12849 NL80211_FLAG_CLEAR_SKB,
12850 },
12851 {
12852 .cmd = NL80211_CMD_ASSOCIATE,
12853 .doit = nl80211_associate,
12854 .policy = nl80211_policy,
12855 .flags = GENL_UNS_ADMIN_PERM,
12856 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12857 NL80211_FLAG_NEED_RTNL,
12858 },
12859 {
12860 .cmd = NL80211_CMD_DEAUTHENTICATE,
12861 .doit = nl80211_deauthenticate,
12862 .policy = nl80211_policy,
12863 .flags = GENL_UNS_ADMIN_PERM,
12864 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12865 NL80211_FLAG_NEED_RTNL,
12866 },
12867 {
12868 .cmd = NL80211_CMD_DISASSOCIATE,
12869 .doit = nl80211_disassociate,
12870 .policy = nl80211_policy,
12871 .flags = GENL_UNS_ADMIN_PERM,
12872 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12873 NL80211_FLAG_NEED_RTNL,
12874 },
12875 {
12876 .cmd = NL80211_CMD_JOIN_IBSS,
12877 .doit = nl80211_join_ibss,
12878 .policy = nl80211_policy,
12879 .flags = GENL_UNS_ADMIN_PERM,
12880 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12881 NL80211_FLAG_NEED_RTNL,
12882 },
12883 {
12884 .cmd = NL80211_CMD_LEAVE_IBSS,
12885 .doit = nl80211_leave_ibss,
12886 .policy = nl80211_policy,
12887 .flags = GENL_UNS_ADMIN_PERM,
12888 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12889 NL80211_FLAG_NEED_RTNL,
12890 },
12891 #ifdef CONFIG_NL80211_TESTMODE
12892 {
12893 .cmd = NL80211_CMD_TESTMODE,
12894 .doit = nl80211_testmode_do,
12895 .dumpit = nl80211_testmode_dump,
12896 .policy = nl80211_policy,
12897 .flags = GENL_UNS_ADMIN_PERM,
12898 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12899 NL80211_FLAG_NEED_RTNL,
12900 },
12901 #endif
12902 {
12903 .cmd = NL80211_CMD_CONNECT,
12904 .doit = nl80211_connect,
12905 .policy = nl80211_policy,
12906 .flags = GENL_UNS_ADMIN_PERM,
12907 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12908 NL80211_FLAG_NEED_RTNL,
12909 },
12910 {
12911 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12912 .doit = nl80211_update_connect_params,
12913 .policy = nl80211_policy,
12914 .flags = GENL_ADMIN_PERM,
12915 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12916 NL80211_FLAG_NEED_RTNL,
12917 },
12918 {
12919 .cmd = NL80211_CMD_DISCONNECT,
12920 .doit = nl80211_disconnect,
12921 .policy = nl80211_policy,
12922 .flags = GENL_UNS_ADMIN_PERM,
12923 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12924 NL80211_FLAG_NEED_RTNL,
12925 },
12926 {
12927 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12928 .doit = nl80211_wiphy_netns,
12929 .policy = nl80211_policy,
12930 .flags = GENL_UNS_ADMIN_PERM,
12931 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12932 NL80211_FLAG_NEED_RTNL,
12933 },
12934 {
12935 .cmd = NL80211_CMD_GET_SURVEY,
12936 .policy = nl80211_policy,
12937 .dumpit = nl80211_dump_survey,
12938 },
12939 {
12940 .cmd = NL80211_CMD_SET_PMKSA,
12941 .doit = nl80211_setdel_pmksa,
12942 .policy = nl80211_policy,
12943 .flags = GENL_UNS_ADMIN_PERM,
12944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12945 NL80211_FLAG_NEED_RTNL,
12946 },
12947 {
12948 .cmd = NL80211_CMD_DEL_PMKSA,
12949 .doit = nl80211_setdel_pmksa,
12950 .policy = nl80211_policy,
12951 .flags = GENL_UNS_ADMIN_PERM,
12952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12953 NL80211_FLAG_NEED_RTNL,
12954 },
12955 {
12956 .cmd = NL80211_CMD_FLUSH_PMKSA,
12957 .doit = nl80211_flush_pmksa,
12958 .policy = nl80211_policy,
12959 .flags = GENL_UNS_ADMIN_PERM,
12960 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12961 NL80211_FLAG_NEED_RTNL,
12962 },
12963 {
12964 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12965 .doit = nl80211_remain_on_channel,
12966 .policy = nl80211_policy,
12967 .flags = GENL_UNS_ADMIN_PERM,
12968 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12969 NL80211_FLAG_NEED_RTNL,
12970 },
12971 {
12972 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12973 .doit = nl80211_cancel_remain_on_channel,
12974 .policy = nl80211_policy,
12975 .flags = GENL_UNS_ADMIN_PERM,
12976 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12977 NL80211_FLAG_NEED_RTNL,
12978 },
12979 {
12980 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12981 .doit = nl80211_set_tx_bitrate_mask,
12982 .policy = nl80211_policy,
12983 .flags = GENL_UNS_ADMIN_PERM,
12984 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12985 NL80211_FLAG_NEED_RTNL,
12986 },
12987 {
12988 .cmd = NL80211_CMD_REGISTER_FRAME,
12989 .doit = nl80211_register_mgmt,
12990 .policy = nl80211_policy,
12991 .flags = GENL_UNS_ADMIN_PERM,
12992 .internal_flags = NL80211_FLAG_NEED_WDEV |
12993 NL80211_FLAG_NEED_RTNL,
12994 },
12995 {
12996 .cmd = NL80211_CMD_FRAME,
12997 .doit = nl80211_tx_mgmt,
12998 .policy = nl80211_policy,
12999 .flags = GENL_UNS_ADMIN_PERM,
13000 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13001 NL80211_FLAG_NEED_RTNL,
13002 },
13003 {
13004 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
13005 .doit = nl80211_tx_mgmt_cancel_wait,
13006 .policy = nl80211_policy,
13007 .flags = GENL_UNS_ADMIN_PERM,
13008 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13009 NL80211_FLAG_NEED_RTNL,
13010 },
13011 {
13012 .cmd = NL80211_CMD_SET_POWER_SAVE,
13013 .doit = nl80211_set_power_save,
13014 .policy = nl80211_policy,
13015 .flags = GENL_UNS_ADMIN_PERM,
13016 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13017 NL80211_FLAG_NEED_RTNL,
13018 },
13019 {
13020 .cmd = NL80211_CMD_GET_POWER_SAVE,
13021 .doit = nl80211_get_power_save,
13022 .policy = nl80211_policy,
13023 /* can be retrieved by unprivileged users */
13024 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13025 NL80211_FLAG_NEED_RTNL,
13026 },
13027 {
13028 .cmd = NL80211_CMD_SET_CQM,
13029 .doit = nl80211_set_cqm,
13030 .policy = nl80211_policy,
13031 .flags = GENL_UNS_ADMIN_PERM,
13032 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13033 NL80211_FLAG_NEED_RTNL,
13034 },
13035 {
13036 .cmd = NL80211_CMD_SET_CHANNEL,
13037 .doit = nl80211_set_channel,
13038 .policy = nl80211_policy,
13039 .flags = GENL_UNS_ADMIN_PERM,
13040 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13041 NL80211_FLAG_NEED_RTNL,
13042 },
13043 {
13044 .cmd = NL80211_CMD_SET_WDS_PEER,
13045 .doit = nl80211_set_wds_peer,
13046 .policy = nl80211_policy,
13047 .flags = GENL_UNS_ADMIN_PERM,
13048 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13049 NL80211_FLAG_NEED_RTNL,
13050 },
13051 {
13052 .cmd = NL80211_CMD_JOIN_MESH,
13053 .doit = nl80211_join_mesh,
13054 .policy = nl80211_policy,
13055 .flags = GENL_UNS_ADMIN_PERM,
13056 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13057 NL80211_FLAG_NEED_RTNL,
13058 },
13059 {
13060 .cmd = NL80211_CMD_LEAVE_MESH,
13061 .doit = nl80211_leave_mesh,
13062 .policy = nl80211_policy,
13063 .flags = GENL_UNS_ADMIN_PERM,
13064 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13065 NL80211_FLAG_NEED_RTNL,
13066 },
13067 {
13068 .cmd = NL80211_CMD_JOIN_OCB,
13069 .doit = nl80211_join_ocb,
13070 .policy = nl80211_policy,
13071 .flags = GENL_UNS_ADMIN_PERM,
13072 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13073 NL80211_FLAG_NEED_RTNL,
13074 },
13075 {
13076 .cmd = NL80211_CMD_LEAVE_OCB,
13077 .doit = nl80211_leave_ocb,
13078 .policy = nl80211_policy,
13079 .flags = GENL_UNS_ADMIN_PERM,
13080 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13081 NL80211_FLAG_NEED_RTNL,
13082 },
13083 #ifdef CONFIG_PM
13084 {
13085 .cmd = NL80211_CMD_GET_WOWLAN,
13086 .doit = nl80211_get_wowlan,
13087 .policy = nl80211_policy,
13088 /* can be retrieved by unprivileged users */
13089 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13090 NL80211_FLAG_NEED_RTNL,
13091 },
13092 {
13093 .cmd = NL80211_CMD_SET_WOWLAN,
13094 .doit = nl80211_set_wowlan,
13095 .policy = nl80211_policy,
13096 .flags = GENL_UNS_ADMIN_PERM,
13097 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13098 NL80211_FLAG_NEED_RTNL,
13099 },
13100 #endif
13101 {
13102 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13103 .doit = nl80211_set_rekey_data,
13104 .policy = nl80211_policy,
13105 .flags = GENL_UNS_ADMIN_PERM,
13106 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13107 NL80211_FLAG_NEED_RTNL |
13108 NL80211_FLAG_CLEAR_SKB,
13109 },
13110 {
13111 .cmd = NL80211_CMD_TDLS_MGMT,
13112 .doit = nl80211_tdls_mgmt,
13113 .policy = nl80211_policy,
13114 .flags = GENL_UNS_ADMIN_PERM,
13115 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13116 NL80211_FLAG_NEED_RTNL,
13117 },
13118 {
13119 .cmd = NL80211_CMD_TDLS_OPER,
13120 .doit = nl80211_tdls_oper,
13121 .policy = nl80211_policy,
13122 .flags = GENL_UNS_ADMIN_PERM,
13123 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13124 NL80211_FLAG_NEED_RTNL,
13125 },
13126 {
13127 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13128 .doit = nl80211_register_unexpected_frame,
13129 .policy = nl80211_policy,
13130 .flags = GENL_UNS_ADMIN_PERM,
13131 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13132 NL80211_FLAG_NEED_RTNL,
13133 },
13134 {
13135 .cmd = NL80211_CMD_PROBE_CLIENT,
13136 .doit = nl80211_probe_client,
13137 .policy = nl80211_policy,
13138 .flags = GENL_UNS_ADMIN_PERM,
13139 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13140 NL80211_FLAG_NEED_RTNL,
13141 },
13142 {
13143 .cmd = NL80211_CMD_REGISTER_BEACONS,
13144 .doit = nl80211_register_beacons,
13145 .policy = nl80211_policy,
13146 .flags = GENL_UNS_ADMIN_PERM,
13147 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13148 NL80211_FLAG_NEED_RTNL,
13149 },
13150 {
13151 .cmd = NL80211_CMD_SET_NOACK_MAP,
13152 .doit = nl80211_set_noack_map,
13153 .policy = nl80211_policy,
13154 .flags = GENL_UNS_ADMIN_PERM,
13155 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13156 NL80211_FLAG_NEED_RTNL,
13157 },
13158 {
13159 .cmd = NL80211_CMD_START_P2P_DEVICE,
13160 .doit = nl80211_start_p2p_device,
13161 .policy = nl80211_policy,
13162 .flags = GENL_UNS_ADMIN_PERM,
13163 .internal_flags = NL80211_FLAG_NEED_WDEV |
13164 NL80211_FLAG_NEED_RTNL,
13165 },
13166 {
13167 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13168 .doit = nl80211_stop_p2p_device,
13169 .policy = nl80211_policy,
13170 .flags = GENL_UNS_ADMIN_PERM,
13171 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13172 NL80211_FLAG_NEED_RTNL,
13173 },
13174 {
13175 .cmd = NL80211_CMD_START_NAN,
13176 .doit = nl80211_start_nan,
13177 .policy = nl80211_policy,
13178 .flags = GENL_ADMIN_PERM,
13179 .internal_flags = NL80211_FLAG_NEED_WDEV |
13180 NL80211_FLAG_NEED_RTNL,
13181 },
13182 {
13183 .cmd = NL80211_CMD_STOP_NAN,
13184 .doit = nl80211_stop_nan,
13185 .policy = nl80211_policy,
13186 .flags = GENL_ADMIN_PERM,
13187 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13188 NL80211_FLAG_NEED_RTNL,
13189 },
13190 {
13191 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13192 .doit = nl80211_nan_add_func,
13193 .policy = nl80211_policy,
13194 .flags = GENL_ADMIN_PERM,
13195 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13196 NL80211_FLAG_NEED_RTNL,
13197 },
13198 {
13199 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13200 .doit = nl80211_nan_del_func,
13201 .policy = nl80211_policy,
13202 .flags = GENL_ADMIN_PERM,
13203 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13204 NL80211_FLAG_NEED_RTNL,
13205 },
13206 {
13207 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13208 .doit = nl80211_nan_change_config,
13209 .policy = nl80211_policy,
13210 .flags = GENL_ADMIN_PERM,
13211 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13212 NL80211_FLAG_NEED_RTNL,
13213 },
13214 {
13215 .cmd = NL80211_CMD_SET_MCAST_RATE,
13216 .doit = nl80211_set_mcast_rate,
13217 .policy = nl80211_policy,
13218 .flags = GENL_UNS_ADMIN_PERM,
13219 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13220 NL80211_FLAG_NEED_RTNL,
13221 },
13222 {
13223 .cmd = NL80211_CMD_SET_MAC_ACL,
13224 .doit = nl80211_set_mac_acl,
13225 .policy = nl80211_policy,
13226 .flags = GENL_UNS_ADMIN_PERM,
13227 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13228 NL80211_FLAG_NEED_RTNL,
13229 },
13230 {
13231 .cmd = NL80211_CMD_RADAR_DETECT,
13232 .doit = nl80211_start_radar_detection,
13233 .policy = nl80211_policy,
13234 .flags = GENL_UNS_ADMIN_PERM,
13235 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13236 NL80211_FLAG_NEED_RTNL,
13237 },
13238 {
13239 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13240 .doit = nl80211_get_protocol_features,
13241 .policy = nl80211_policy,
13242 },
13243 {
13244 .cmd = NL80211_CMD_UPDATE_FT_IES,
13245 .doit = nl80211_update_ft_ies,
13246 .policy = nl80211_policy,
13247 .flags = GENL_UNS_ADMIN_PERM,
13248 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13249 NL80211_FLAG_NEED_RTNL,
13250 },
13251 {
13252 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13253 .doit = nl80211_crit_protocol_start,
13254 .policy = nl80211_policy,
13255 .flags = GENL_UNS_ADMIN_PERM,
13256 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13257 NL80211_FLAG_NEED_RTNL,
13258 },
13259 {
13260 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13261 .doit = nl80211_crit_protocol_stop,
13262 .policy = nl80211_policy,
13263 .flags = GENL_UNS_ADMIN_PERM,
13264 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13265 NL80211_FLAG_NEED_RTNL,
13266 },
13267 {
13268 .cmd = NL80211_CMD_GET_COALESCE,
13269 .doit = nl80211_get_coalesce,
13270 .policy = nl80211_policy,
13271 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13272 NL80211_FLAG_NEED_RTNL,
13273 },
13274 {
13275 .cmd = NL80211_CMD_SET_COALESCE,
13276 .doit = nl80211_set_coalesce,
13277 .policy = nl80211_policy,
13278 .flags = GENL_UNS_ADMIN_PERM,
13279 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13280 NL80211_FLAG_NEED_RTNL,
13281 },
13282 {
13283 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13284 .doit = nl80211_channel_switch,
13285 .policy = nl80211_policy,
13286 .flags = GENL_UNS_ADMIN_PERM,
13287 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13288 NL80211_FLAG_NEED_RTNL,
13289 },
13290 {
13291 .cmd = NL80211_CMD_VENDOR,
13292 .doit = nl80211_vendor_cmd,
13293 .dumpit = nl80211_vendor_cmd_dump,
13294 .policy = nl80211_policy,
13295 .flags = GENL_UNS_ADMIN_PERM,
13296 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13297 NL80211_FLAG_NEED_RTNL,
13298 },
13299 {
13300 .cmd = NL80211_CMD_SET_QOS_MAP,
13301 .doit = nl80211_set_qos_map,
13302 .policy = nl80211_policy,
13303 .flags = GENL_UNS_ADMIN_PERM,
13304 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13305 NL80211_FLAG_NEED_RTNL,
13306 },
13307 {
13308 .cmd = NL80211_CMD_ADD_TX_TS,
13309 .doit = nl80211_add_tx_ts,
13310 .policy = nl80211_policy,
13311 .flags = GENL_UNS_ADMIN_PERM,
13312 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13313 NL80211_FLAG_NEED_RTNL,
13314 },
13315 {
13316 .cmd = NL80211_CMD_DEL_TX_TS,
13317 .doit = nl80211_del_tx_ts,
13318 .policy = nl80211_policy,
13319 .flags = GENL_UNS_ADMIN_PERM,
13320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13321 NL80211_FLAG_NEED_RTNL,
13322 },
13323 {
13324 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13325 .doit = nl80211_tdls_channel_switch,
13326 .policy = nl80211_policy,
13327 .flags = GENL_UNS_ADMIN_PERM,
13328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13329 NL80211_FLAG_NEED_RTNL,
13330 },
13331 {
13332 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13333 .doit = nl80211_tdls_cancel_channel_switch,
13334 .policy = nl80211_policy,
13335 .flags = GENL_UNS_ADMIN_PERM,
13336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13337 NL80211_FLAG_NEED_RTNL,
13338 },
13339 {
13340 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13341 .doit = nl80211_set_multicast_to_unicast,
13342 .policy = nl80211_policy,
13343 .flags = GENL_UNS_ADMIN_PERM,
13344 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13345 NL80211_FLAG_NEED_RTNL,
13346 },
13347 {
13348 .cmd = NL80211_CMD_SET_PMK,
13349 .doit = nl80211_set_pmk,
13350 .policy = nl80211_policy,
13351 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13352 NL80211_FLAG_NEED_RTNL,
13353 },
13354 {
13355 .cmd = NL80211_CMD_DEL_PMK,
13356 .doit = nl80211_del_pmk,
13357 .policy = nl80211_policy,
13358 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13359 NL80211_FLAG_NEED_RTNL,
13360 },
13361
13362 };
13363
13364 static struct genl_family nl80211_fam __ro_after_init = {
13365 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13366 .hdrsize = 0, /* no private header */
13367 .version = 1, /* no particular meaning now */
13368 .maxattr = NL80211_ATTR_MAX,
13369 .netnsok = true,
13370 .pre_doit = nl80211_pre_doit,
13371 .post_doit = nl80211_post_doit,
13372 .module = THIS_MODULE,
13373 .ops = nl80211_ops,
13374 .n_ops = ARRAY_SIZE(nl80211_ops),
13375 .mcgrps = nl80211_mcgrps,
13376 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13377 };
13378
13379 /* notification functions */
13380
13381 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13382 enum nl80211_commands cmd)
13383 {
13384 struct sk_buff *msg;
13385 struct nl80211_dump_wiphy_state state = {};
13386
13387 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13388 cmd != NL80211_CMD_DEL_WIPHY);
13389
13390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13391 if (!msg)
13392 return;
13393
13394 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13395 nlmsg_free(msg);
13396 return;
13397 }
13398
13399 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13400 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13401 }
13402
13403 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13404 struct wireless_dev *wdev,
13405 enum nl80211_commands cmd)
13406 {
13407 struct sk_buff *msg;
13408
13409 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13410 cmd != NL80211_CMD_DEL_INTERFACE);
13411
13412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13413 if (!msg)
13414 return;
13415
13416 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13417 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13418 nlmsg_free(msg);
13419 return;
13420 }
13421
13422 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13423 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13424 }
13425
13426 static int nl80211_add_scan_req(struct sk_buff *msg,
13427 struct cfg80211_registered_device *rdev)
13428 {
13429 struct cfg80211_scan_request *req = rdev->scan_req;
13430 struct nlattr *nest;
13431 int i;
13432
13433 if (WARN_ON(!req))
13434 return 0;
13435
13436 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13437 if (!nest)
13438 goto nla_put_failure;
13439 for (i = 0; i < req->n_ssids; i++) {
13440 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13441 goto nla_put_failure;
13442 }
13443 nla_nest_end(msg, nest);
13444
13445 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13446 if (!nest)
13447 goto nla_put_failure;
13448 for (i = 0; i < req->n_channels; i++) {
13449 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13450 goto nla_put_failure;
13451 }
13452 nla_nest_end(msg, nest);
13453
13454 if (req->ie &&
13455 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13456 goto nla_put_failure;
13457
13458 if (req->flags &&
13459 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13460 goto nla_put_failure;
13461
13462 if (req->info.scan_start_tsf &&
13463 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13464 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13465 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13466 req->info.tsf_bssid)))
13467 goto nla_put_failure;
13468
13469 return 0;
13470 nla_put_failure:
13471 return -ENOBUFS;
13472 }
13473
13474 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13475 struct cfg80211_registered_device *rdev,
13476 struct wireless_dev *wdev,
13477 u32 portid, u32 seq, int flags,
13478 u32 cmd)
13479 {
13480 void *hdr;
13481
13482 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13483 if (!hdr)
13484 return -1;
13485
13486 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13487 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13488 wdev->netdev->ifindex)) ||
13489 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13490 NL80211_ATTR_PAD))
13491 goto nla_put_failure;
13492
13493 /* ignore errors and send incomplete event anyway */
13494 nl80211_add_scan_req(msg, rdev);
13495
13496 genlmsg_end(msg, hdr);
13497 return 0;
13498
13499 nla_put_failure:
13500 genlmsg_cancel(msg, hdr);
13501 return -EMSGSIZE;
13502 }
13503
13504 static int
13505 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13506 struct cfg80211_sched_scan_request *req, u32 cmd)
13507 {
13508 void *hdr;
13509
13510 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13511 if (!hdr)
13512 return -1;
13513
13514 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13515 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13516 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13517 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13518 NL80211_ATTR_PAD))
13519 goto nla_put_failure;
13520
13521 genlmsg_end(msg, hdr);
13522 return 0;
13523
13524 nla_put_failure:
13525 genlmsg_cancel(msg, hdr);
13526 return -EMSGSIZE;
13527 }
13528
13529 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13530 struct wireless_dev *wdev)
13531 {
13532 struct sk_buff *msg;
13533
13534 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13535 if (!msg)
13536 return;
13537
13538 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13539 NL80211_CMD_TRIGGER_SCAN) < 0) {
13540 nlmsg_free(msg);
13541 return;
13542 }
13543
13544 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13545 NL80211_MCGRP_SCAN, GFP_KERNEL);
13546 }
13547
13548 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13549 struct wireless_dev *wdev, bool aborted)
13550 {
13551 struct sk_buff *msg;
13552
13553 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13554 if (!msg)
13555 return NULL;
13556
13557 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13558 aborted ? NL80211_CMD_SCAN_ABORTED :
13559 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13560 nlmsg_free(msg);
13561 return NULL;
13562 }
13563
13564 return msg;
13565 }
13566
13567 /* send message created by nl80211_build_scan_msg() */
13568 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13569 struct sk_buff *msg)
13570 {
13571 if (!msg)
13572 return;
13573
13574 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13575 NL80211_MCGRP_SCAN, GFP_KERNEL);
13576 }
13577
13578 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13579 {
13580 struct sk_buff *msg;
13581
13582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13583 if (!msg)
13584 return;
13585
13586 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13587 nlmsg_free(msg);
13588 return;
13589 }
13590
13591 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13592 NL80211_MCGRP_SCAN, GFP_KERNEL);
13593 }
13594
13595 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13596 struct regulatory_request *request)
13597 {
13598 /* Userspace can always count this one always being set */
13599 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13600 goto nla_put_failure;
13601
13602 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13603 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13604 NL80211_REGDOM_TYPE_WORLD))
13605 goto nla_put_failure;
13606 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13607 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13608 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13609 goto nla_put_failure;
13610 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13611 request->intersect) {
13612 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13613 NL80211_REGDOM_TYPE_INTERSECTION))
13614 goto nla_put_failure;
13615 } else {
13616 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13617 NL80211_REGDOM_TYPE_COUNTRY) ||
13618 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13619 request->alpha2))
13620 goto nla_put_failure;
13621 }
13622
13623 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13624 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13625
13626 if (wiphy &&
13627 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13628 goto nla_put_failure;
13629
13630 if (wiphy &&
13631 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13632 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13633 goto nla_put_failure;
13634 }
13635
13636 return true;
13637
13638 nla_put_failure:
13639 return false;
13640 }
13641
13642 /*
13643 * This can happen on global regulatory changes or device specific settings
13644 * based on custom regulatory domains.
13645 */
13646 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13647 struct regulatory_request *request)
13648 {
13649 struct sk_buff *msg;
13650 void *hdr;
13651
13652 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13653 if (!msg)
13654 return;
13655
13656 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13657 if (!hdr) {
13658 nlmsg_free(msg);
13659 return;
13660 }
13661
13662 if (nl80211_reg_change_event_fill(msg, request) == false)
13663 goto nla_put_failure;
13664
13665 genlmsg_end(msg, hdr);
13666
13667 rcu_read_lock();
13668 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13669 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13670 rcu_read_unlock();
13671
13672 return;
13673
13674 nla_put_failure:
13675 genlmsg_cancel(msg, hdr);
13676 nlmsg_free(msg);
13677 }
13678
13679 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13680 struct net_device *netdev,
13681 const u8 *buf, size_t len,
13682 enum nl80211_commands cmd, gfp_t gfp,
13683 int uapsd_queues)
13684 {
13685 struct sk_buff *msg;
13686 void *hdr;
13687
13688 msg = nlmsg_new(100 + len, gfp);
13689 if (!msg)
13690 return;
13691
13692 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13693 if (!hdr) {
13694 nlmsg_free(msg);
13695 return;
13696 }
13697
13698 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13699 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13700 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13701 goto nla_put_failure;
13702
13703 if (uapsd_queues >= 0) {
13704 struct nlattr *nla_wmm =
13705 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13706 if (!nla_wmm)
13707 goto nla_put_failure;
13708
13709 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13710 uapsd_queues))
13711 goto nla_put_failure;
13712
13713 nla_nest_end(msg, nla_wmm);
13714 }
13715
13716 genlmsg_end(msg, hdr);
13717
13718 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13719 NL80211_MCGRP_MLME, gfp);
13720 return;
13721
13722 nla_put_failure:
13723 genlmsg_cancel(msg, hdr);
13724 nlmsg_free(msg);
13725 }
13726
13727 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13728 struct net_device *netdev, const u8 *buf,
13729 size_t len, gfp_t gfp)
13730 {
13731 nl80211_send_mlme_event(rdev, netdev, buf, len,
13732 NL80211_CMD_AUTHENTICATE, gfp, -1);
13733 }
13734
13735 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13736 struct net_device *netdev, const u8 *buf,
13737 size_t len, gfp_t gfp, int uapsd_queues)
13738 {
13739 nl80211_send_mlme_event(rdev, netdev, buf, len,
13740 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13741 }
13742
13743 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13744 struct net_device *netdev, const u8 *buf,
13745 size_t len, gfp_t gfp)
13746 {
13747 nl80211_send_mlme_event(rdev, netdev, buf, len,
13748 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13749 }
13750
13751 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13752 struct net_device *netdev, const u8 *buf,
13753 size_t len, gfp_t gfp)
13754 {
13755 nl80211_send_mlme_event(rdev, netdev, buf, len,
13756 NL80211_CMD_DISASSOCIATE, gfp, -1);
13757 }
13758
13759 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13760 size_t len)
13761 {
13762 struct wireless_dev *wdev = dev->ieee80211_ptr;
13763 struct wiphy *wiphy = wdev->wiphy;
13764 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13765 const struct ieee80211_mgmt *mgmt = (void *)buf;
13766 u32 cmd;
13767
13768 if (WARN_ON(len < 2))
13769 return;
13770
13771 if (ieee80211_is_deauth(mgmt->frame_control))
13772 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13773 else
13774 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13775
13776 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13777 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13778 }
13779 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13780
13781 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13782 struct net_device *netdev, int cmd,
13783 const u8 *addr, gfp_t gfp)
13784 {
13785 struct sk_buff *msg;
13786 void *hdr;
13787
13788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13789 if (!msg)
13790 return;
13791
13792 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13793 if (!hdr) {
13794 nlmsg_free(msg);
13795 return;
13796 }
13797
13798 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13799 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13800 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13801 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13802 goto nla_put_failure;
13803
13804 genlmsg_end(msg, hdr);
13805
13806 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13807 NL80211_MCGRP_MLME, gfp);
13808 return;
13809
13810 nla_put_failure:
13811 genlmsg_cancel(msg, hdr);
13812 nlmsg_free(msg);
13813 }
13814
13815 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13816 struct net_device *netdev, const u8 *addr,
13817 gfp_t gfp)
13818 {
13819 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13820 addr, gfp);
13821 }
13822
13823 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13824 struct net_device *netdev, const u8 *addr,
13825 gfp_t gfp)
13826 {
13827 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13828 addr, gfp);
13829 }
13830
13831 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13832 struct net_device *netdev,
13833 struct cfg80211_connect_resp_params *cr,
13834 gfp_t gfp)
13835 {
13836 struct sk_buff *msg;
13837 void *hdr;
13838
13839 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13840 cr->fils_kek_len + cr->pmk_len +
13841 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13842 if (!msg)
13843 return;
13844
13845 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13846 if (!hdr) {
13847 nlmsg_free(msg);
13848 return;
13849 }
13850
13851 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13852 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13853 (cr->bssid &&
13854 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13855 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13856 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13857 cr->status) ||
13858 (cr->status < 0 &&
13859 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13860 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13861 cr->timeout_reason))) ||
13862 (cr->req_ie &&
13863 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13864 (cr->resp_ie &&
13865 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13866 cr->resp_ie)) ||
13867 (cr->update_erp_next_seq_num &&
13868 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13869 cr->fils_erp_next_seq_num)) ||
13870 (cr->status == WLAN_STATUS_SUCCESS &&
13871 ((cr->fils_kek &&
13872 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13873 cr->fils_kek)) ||
13874 (cr->pmk &&
13875 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13876 (cr->pmkid &&
13877 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13878 goto nla_put_failure;
13879
13880 genlmsg_end(msg, hdr);
13881
13882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13883 NL80211_MCGRP_MLME, gfp);
13884 return;
13885
13886 nla_put_failure:
13887 genlmsg_cancel(msg, hdr);
13888 nlmsg_free(msg);
13889 }
13890
13891 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13892 struct net_device *netdev,
13893 struct cfg80211_roam_info *info, gfp_t gfp)
13894 {
13895 struct sk_buff *msg;
13896 void *hdr;
13897 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13898
13899 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13900 if (!msg)
13901 return;
13902
13903 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13904 if (!hdr) {
13905 nlmsg_free(msg);
13906 return;
13907 }
13908
13909 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13910 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13911 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13912 (info->req_ie &&
13913 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13914 info->req_ie)) ||
13915 (info->resp_ie &&
13916 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13917 info->resp_ie)))
13918 goto nla_put_failure;
13919
13920 genlmsg_end(msg, hdr);
13921
13922 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13923 NL80211_MCGRP_MLME, gfp);
13924 return;
13925
13926 nla_put_failure:
13927 genlmsg_cancel(msg, hdr);
13928 nlmsg_free(msg);
13929 }
13930
13931 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13932 struct net_device *netdev, const u8 *bssid)
13933 {
13934 struct sk_buff *msg;
13935 void *hdr;
13936
13937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13938 if (!msg)
13939 return;
13940
13941 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13942 if (!hdr) {
13943 nlmsg_free(msg);
13944 return;
13945 }
13946
13947 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13948 goto nla_put_failure;
13949
13950 genlmsg_end(msg, hdr);
13951
13952 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13953 NL80211_MCGRP_MLME, GFP_KERNEL);
13954 return;
13955
13956 nla_put_failure:
13957 genlmsg_cancel(msg, hdr);
13958 nlmsg_free(msg);
13959 }
13960
13961 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13962 struct net_device *netdev, u16 reason,
13963 const u8 *ie, size_t ie_len, bool from_ap)
13964 {
13965 struct sk_buff *msg;
13966 void *hdr;
13967
13968 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13969 if (!msg)
13970 return;
13971
13972 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13973 if (!hdr) {
13974 nlmsg_free(msg);
13975 return;
13976 }
13977
13978 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13979 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13980 (reason &&
13981 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13982 (from_ap &&
13983 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13984 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13985 goto nla_put_failure;
13986
13987 genlmsg_end(msg, hdr);
13988
13989 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13990 NL80211_MCGRP_MLME, GFP_KERNEL);
13991 return;
13992
13993 nla_put_failure:
13994 genlmsg_cancel(msg, hdr);
13995 nlmsg_free(msg);
13996 }
13997
13998 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13999 struct net_device *netdev, const u8 *bssid,
14000 gfp_t gfp)
14001 {
14002 struct sk_buff *msg;
14003 void *hdr;
14004
14005 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14006 if (!msg)
14007 return;
14008
14009 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
14010 if (!hdr) {
14011 nlmsg_free(msg);
14012 return;
14013 }
14014
14015 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14016 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14017 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14018 goto nla_put_failure;
14019
14020 genlmsg_end(msg, hdr);
14021
14022 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14023 NL80211_MCGRP_MLME, gfp);
14024 return;
14025
14026 nla_put_failure:
14027 genlmsg_cancel(msg, hdr);
14028 nlmsg_free(msg);
14029 }
14030
14031 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14032 const u8* ie, u8 ie_len, gfp_t gfp)
14033 {
14034 struct wireless_dev *wdev = dev->ieee80211_ptr;
14035 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14036 struct sk_buff *msg;
14037 void *hdr;
14038
14039 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14040 return;
14041
14042 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14043
14044 msg = nlmsg_new(100 + ie_len, gfp);
14045 if (!msg)
14046 return;
14047
14048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14049 if (!hdr) {
14050 nlmsg_free(msg);
14051 return;
14052 }
14053
14054 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14055 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14056 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14057 (ie_len && ie &&
14058 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14059 goto nla_put_failure;
14060
14061 genlmsg_end(msg, hdr);
14062
14063 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14064 NL80211_MCGRP_MLME, gfp);
14065 return;
14066
14067 nla_put_failure:
14068 genlmsg_cancel(msg, hdr);
14069 nlmsg_free(msg);
14070 }
14071 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14072
14073 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14074 struct net_device *netdev, const u8 *addr,
14075 enum nl80211_key_type key_type, int key_id,
14076 const u8 *tsc, gfp_t gfp)
14077 {
14078 struct sk_buff *msg;
14079 void *hdr;
14080
14081 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14082 if (!msg)
14083 return;
14084
14085 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14086 if (!hdr) {
14087 nlmsg_free(msg);
14088 return;
14089 }
14090
14091 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14092 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14093 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14094 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14095 (key_id != -1 &&
14096 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14097 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14098 goto nla_put_failure;
14099
14100 genlmsg_end(msg, hdr);
14101
14102 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14103 NL80211_MCGRP_MLME, gfp);
14104 return;
14105
14106 nla_put_failure:
14107 genlmsg_cancel(msg, hdr);
14108 nlmsg_free(msg);
14109 }
14110
14111 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14112 struct ieee80211_channel *channel_before,
14113 struct ieee80211_channel *channel_after)
14114 {
14115 struct sk_buff *msg;
14116 void *hdr;
14117 struct nlattr *nl_freq;
14118
14119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14120 if (!msg)
14121 return;
14122
14123 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14124 if (!hdr) {
14125 nlmsg_free(msg);
14126 return;
14127 }
14128
14129 /*
14130 * Since we are applying the beacon hint to a wiphy we know its
14131 * wiphy_idx is valid
14132 */
14133 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14134 goto nla_put_failure;
14135
14136 /* Before */
14137 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14138 if (!nl_freq)
14139 goto nla_put_failure;
14140 if (nl80211_msg_put_channel(msg, channel_before, false))
14141 goto nla_put_failure;
14142 nla_nest_end(msg, nl_freq);
14143
14144 /* After */
14145 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14146 if (!nl_freq)
14147 goto nla_put_failure;
14148 if (nl80211_msg_put_channel(msg, channel_after, false))
14149 goto nla_put_failure;
14150 nla_nest_end(msg, nl_freq);
14151
14152 genlmsg_end(msg, hdr);
14153
14154 rcu_read_lock();
14155 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14156 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14157 rcu_read_unlock();
14158
14159 return;
14160
14161 nla_put_failure:
14162 genlmsg_cancel(msg, hdr);
14163 nlmsg_free(msg);
14164 }
14165
14166 static void nl80211_send_remain_on_chan_event(
14167 int cmd, struct cfg80211_registered_device *rdev,
14168 struct wireless_dev *wdev, u64 cookie,
14169 struct ieee80211_channel *chan,
14170 unsigned int duration, gfp_t gfp)
14171 {
14172 struct sk_buff *msg;
14173 void *hdr;
14174
14175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14176 if (!msg)
14177 return;
14178
14179 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14180 if (!hdr) {
14181 nlmsg_free(msg);
14182 return;
14183 }
14184
14185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14186 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14187 wdev->netdev->ifindex)) ||
14188 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14189 NL80211_ATTR_PAD) ||
14190 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14191 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14192 NL80211_CHAN_NO_HT) ||
14193 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14194 NL80211_ATTR_PAD))
14195 goto nla_put_failure;
14196
14197 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14198 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14199 goto nla_put_failure;
14200
14201 genlmsg_end(msg, hdr);
14202
14203 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14204 NL80211_MCGRP_MLME, gfp);
14205 return;
14206
14207 nla_put_failure:
14208 genlmsg_cancel(msg, hdr);
14209 nlmsg_free(msg);
14210 }
14211
14212 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14213 struct ieee80211_channel *chan,
14214 unsigned int duration, gfp_t gfp)
14215 {
14216 struct wiphy *wiphy = wdev->wiphy;
14217 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14218
14219 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14220 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14221 rdev, wdev, cookie, chan,
14222 duration, gfp);
14223 }
14224 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14225
14226 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14227 struct ieee80211_channel *chan,
14228 gfp_t gfp)
14229 {
14230 struct wiphy *wiphy = wdev->wiphy;
14231 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14232
14233 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14234 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14235 rdev, wdev, cookie, chan, 0, gfp);
14236 }
14237 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14238
14239 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14240 struct station_info *sinfo, gfp_t gfp)
14241 {
14242 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14243 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14244 struct sk_buff *msg;
14245
14246 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14247
14248 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14249 if (!msg)
14250 return;
14251
14252 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14253 rdev, dev, mac_addr, sinfo) < 0) {
14254 nlmsg_free(msg);
14255 return;
14256 }
14257
14258 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14259 NL80211_MCGRP_MLME, gfp);
14260 }
14261 EXPORT_SYMBOL(cfg80211_new_sta);
14262
14263 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14264 struct station_info *sinfo, gfp_t gfp)
14265 {
14266 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14267 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14268 struct sk_buff *msg;
14269 struct station_info empty_sinfo = {};
14270
14271 if (!sinfo)
14272 sinfo = &empty_sinfo;
14273
14274 trace_cfg80211_del_sta(dev, mac_addr);
14275
14276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14277 if (!msg)
14278 return;
14279
14280 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14281 rdev, dev, mac_addr, sinfo) < 0) {
14282 nlmsg_free(msg);
14283 return;
14284 }
14285
14286 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14287 NL80211_MCGRP_MLME, gfp);
14288 }
14289 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14290
14291 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14292 enum nl80211_connect_failed_reason reason,
14293 gfp_t gfp)
14294 {
14295 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14296 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14297 struct sk_buff *msg;
14298 void *hdr;
14299
14300 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14301 if (!msg)
14302 return;
14303
14304 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14305 if (!hdr) {
14306 nlmsg_free(msg);
14307 return;
14308 }
14309
14310 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14311 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14312 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14313 goto nla_put_failure;
14314
14315 genlmsg_end(msg, hdr);
14316
14317 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14318 NL80211_MCGRP_MLME, gfp);
14319 return;
14320
14321 nla_put_failure:
14322 genlmsg_cancel(msg, hdr);
14323 nlmsg_free(msg);
14324 }
14325 EXPORT_SYMBOL(cfg80211_conn_failed);
14326
14327 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14328 const u8 *addr, gfp_t gfp)
14329 {
14330 struct wireless_dev *wdev = dev->ieee80211_ptr;
14331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14332 struct sk_buff *msg;
14333 void *hdr;
14334 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14335
14336 if (!nlportid)
14337 return false;
14338
14339 msg = nlmsg_new(100, gfp);
14340 if (!msg)
14341 return true;
14342
14343 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14344 if (!hdr) {
14345 nlmsg_free(msg);
14346 return true;
14347 }
14348
14349 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14350 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14351 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14352 goto nla_put_failure;
14353
14354 genlmsg_end(msg, hdr);
14355 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14356 return true;
14357
14358 nla_put_failure:
14359 genlmsg_cancel(msg, hdr);
14360 nlmsg_free(msg);
14361 return true;
14362 }
14363
14364 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14365 const u8 *addr, gfp_t gfp)
14366 {
14367 struct wireless_dev *wdev = dev->ieee80211_ptr;
14368 bool ret;
14369
14370 trace_cfg80211_rx_spurious_frame(dev, addr);
14371
14372 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14373 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14374 trace_cfg80211_return_bool(false);
14375 return false;
14376 }
14377 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14378 addr, gfp);
14379 trace_cfg80211_return_bool(ret);
14380 return ret;
14381 }
14382 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14383
14384 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14385 const u8 *addr, gfp_t gfp)
14386 {
14387 struct wireless_dev *wdev = dev->ieee80211_ptr;
14388 bool ret;
14389
14390 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14391
14392 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14393 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14394 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14395 trace_cfg80211_return_bool(false);
14396 return false;
14397 }
14398 ret = __nl80211_unexpected_frame(dev,
14399 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14400 addr, gfp);
14401 trace_cfg80211_return_bool(ret);
14402 return ret;
14403 }
14404 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14405
14406 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14407 struct wireless_dev *wdev, u32 nlportid,
14408 int freq, int sig_dbm,
14409 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14410 {
14411 struct net_device *netdev = wdev->netdev;
14412 struct sk_buff *msg;
14413 void *hdr;
14414
14415 msg = nlmsg_new(100 + len, gfp);
14416 if (!msg)
14417 return -ENOMEM;
14418
14419 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14420 if (!hdr) {
14421 nlmsg_free(msg);
14422 return -ENOMEM;
14423 }
14424
14425 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14426 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14427 netdev->ifindex)) ||
14428 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14429 NL80211_ATTR_PAD) ||
14430 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14431 (sig_dbm &&
14432 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14433 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14434 (flags &&
14435 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14436 goto nla_put_failure;
14437
14438 genlmsg_end(msg, hdr);
14439
14440 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14441
14442 nla_put_failure:
14443 genlmsg_cancel(msg, hdr);
14444 nlmsg_free(msg);
14445 return -ENOBUFS;
14446 }
14447
14448 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14449 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14450 {
14451 struct wiphy *wiphy = wdev->wiphy;
14452 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14453 struct net_device *netdev = wdev->netdev;
14454 struct sk_buff *msg;
14455 void *hdr;
14456
14457 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14458
14459 msg = nlmsg_new(100 + len, gfp);
14460 if (!msg)
14461 return;
14462
14463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14464 if (!hdr) {
14465 nlmsg_free(msg);
14466 return;
14467 }
14468
14469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14470 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14471 netdev->ifindex)) ||
14472 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14473 NL80211_ATTR_PAD) ||
14474 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14475 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14476 NL80211_ATTR_PAD) ||
14477 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14478 goto nla_put_failure;
14479
14480 genlmsg_end(msg, hdr);
14481
14482 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14483 NL80211_MCGRP_MLME, gfp);
14484 return;
14485
14486 nla_put_failure:
14487 genlmsg_cancel(msg, hdr);
14488 nlmsg_free(msg);
14489 }
14490 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14491
14492 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14493 const char *mac, gfp_t gfp)
14494 {
14495 struct wireless_dev *wdev = dev->ieee80211_ptr;
14496 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14497 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14498 void **cb;
14499
14500 if (!msg)
14501 return NULL;
14502
14503 cb = (void **)msg->cb;
14504
14505 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14506 if (!cb[0]) {
14507 nlmsg_free(msg);
14508 return NULL;
14509 }
14510
14511 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14512 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14513 goto nla_put_failure;
14514
14515 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14516 goto nla_put_failure;
14517
14518 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14519 if (!cb[1])
14520 goto nla_put_failure;
14521
14522 cb[2] = rdev;
14523
14524 return msg;
14525 nla_put_failure:
14526 nlmsg_free(msg);
14527 return NULL;
14528 }
14529
14530 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14531 {
14532 void **cb = (void **)msg->cb;
14533 struct cfg80211_registered_device *rdev = cb[2];
14534
14535 nla_nest_end(msg, cb[1]);
14536 genlmsg_end(msg, cb[0]);
14537
14538 memset(msg->cb, 0, sizeof(msg->cb));
14539
14540 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14541 NL80211_MCGRP_MLME, gfp);
14542 }
14543
14544 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14545 enum nl80211_cqm_rssi_threshold_event rssi_event,
14546 s32 rssi_level, gfp_t gfp)
14547 {
14548 struct sk_buff *msg;
14549 struct wireless_dev *wdev = dev->ieee80211_ptr;
14550 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14551
14552 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14553
14554 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14555 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14556 return;
14557
14558 if (wdev->cqm_config) {
14559 wdev->cqm_config->last_rssi_event_value = rssi_level;
14560
14561 cfg80211_cqm_rssi_update(rdev, dev);
14562
14563 if (rssi_level == 0)
14564 rssi_level = wdev->cqm_config->last_rssi_event_value;
14565 }
14566
14567 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14568 if (!msg)
14569 return;
14570
14571 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14572 rssi_event))
14573 goto nla_put_failure;
14574
14575 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14576 rssi_level))
14577 goto nla_put_failure;
14578
14579 cfg80211_send_cqm(msg, gfp);
14580
14581 return;
14582
14583 nla_put_failure:
14584 nlmsg_free(msg);
14585 }
14586 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14587
14588 void cfg80211_cqm_txe_notify(struct net_device *dev,
14589 const u8 *peer, u32 num_packets,
14590 u32 rate, u32 intvl, gfp_t gfp)
14591 {
14592 struct sk_buff *msg;
14593
14594 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14595 if (!msg)
14596 return;
14597
14598 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14599 goto nla_put_failure;
14600
14601 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14602 goto nla_put_failure;
14603
14604 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14605 goto nla_put_failure;
14606
14607 cfg80211_send_cqm(msg, gfp);
14608 return;
14609
14610 nla_put_failure:
14611 nlmsg_free(msg);
14612 }
14613 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14614
14615 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14616 const u8 *peer, u32 num_packets, gfp_t gfp)
14617 {
14618 struct sk_buff *msg;
14619
14620 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14621
14622 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14623 if (!msg)
14624 return;
14625
14626 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
14627 goto nla_put_failure;
14628
14629 cfg80211_send_cqm(msg, gfp);
14630 return;
14631
14632 nla_put_failure:
14633 nlmsg_free(msg);
14634 }
14635 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
14636
14637 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14638 {
14639 struct sk_buff *msg;
14640
14641 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14642 if (!msg)
14643 return;
14644
14645 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14646 goto nla_put_failure;
14647
14648 cfg80211_send_cqm(msg, gfp);
14649 return;
14650
14651 nla_put_failure:
14652 nlmsg_free(msg);
14653 }
14654 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14655
14656 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14657 struct net_device *netdev, const u8 *bssid,
14658 const u8 *replay_ctr, gfp_t gfp)
14659 {
14660 struct sk_buff *msg;
14661 struct nlattr *rekey_attr;
14662 void *hdr;
14663
14664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14665 if (!msg)
14666 return;
14667
14668 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14669 if (!hdr) {
14670 nlmsg_free(msg);
14671 return;
14672 }
14673
14674 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14675 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14676 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14677 goto nla_put_failure;
14678
14679 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14680 if (!rekey_attr)
14681 goto nla_put_failure;
14682
14683 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14684 NL80211_REPLAY_CTR_LEN, replay_ctr))
14685 goto nla_put_failure;
14686
14687 nla_nest_end(msg, rekey_attr);
14688
14689 genlmsg_end(msg, hdr);
14690
14691 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14692 NL80211_MCGRP_MLME, gfp);
14693 return;
14694
14695 nla_put_failure:
14696 genlmsg_cancel(msg, hdr);
14697 nlmsg_free(msg);
14698 }
14699
14700 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14701 const u8 *replay_ctr, gfp_t gfp)
14702 {
14703 struct wireless_dev *wdev = dev->ieee80211_ptr;
14704 struct wiphy *wiphy = wdev->wiphy;
14705 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14706
14707 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14708 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14709 }
14710 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14711
14712 static void
14713 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14714 struct net_device *netdev, int index,
14715 const u8 *bssid, bool preauth, gfp_t gfp)
14716 {
14717 struct sk_buff *msg;
14718 struct nlattr *attr;
14719 void *hdr;
14720
14721 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14722 if (!msg)
14723 return;
14724
14725 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14726 if (!hdr) {
14727 nlmsg_free(msg);
14728 return;
14729 }
14730
14731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14732 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14733 goto nla_put_failure;
14734
14735 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14736 if (!attr)
14737 goto nla_put_failure;
14738
14739 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14740 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14741 (preauth &&
14742 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14743 goto nla_put_failure;
14744
14745 nla_nest_end(msg, attr);
14746
14747 genlmsg_end(msg, hdr);
14748
14749 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14750 NL80211_MCGRP_MLME, gfp);
14751 return;
14752
14753 nla_put_failure:
14754 genlmsg_cancel(msg, hdr);
14755 nlmsg_free(msg);
14756 }
14757
14758 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14759 const u8 *bssid, bool preauth, gfp_t gfp)
14760 {
14761 struct wireless_dev *wdev = dev->ieee80211_ptr;
14762 struct wiphy *wiphy = wdev->wiphy;
14763 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14764
14765 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14766 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14767 }
14768 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14769
14770 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14771 struct net_device *netdev,
14772 struct cfg80211_chan_def *chandef,
14773 gfp_t gfp,
14774 enum nl80211_commands notif,
14775 u8 count)
14776 {
14777 struct sk_buff *msg;
14778 void *hdr;
14779
14780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14781 if (!msg)
14782 return;
14783
14784 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14785 if (!hdr) {
14786 nlmsg_free(msg);
14787 return;
14788 }
14789
14790 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14791 goto nla_put_failure;
14792
14793 if (nl80211_send_chandef(msg, chandef))
14794 goto nla_put_failure;
14795
14796 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14797 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14798 goto nla_put_failure;
14799
14800 genlmsg_end(msg, hdr);
14801
14802 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14803 NL80211_MCGRP_MLME, gfp);
14804 return;
14805
14806 nla_put_failure:
14807 genlmsg_cancel(msg, hdr);
14808 nlmsg_free(msg);
14809 }
14810
14811 void cfg80211_ch_switch_notify(struct net_device *dev,
14812 struct cfg80211_chan_def *chandef)
14813 {
14814 struct wireless_dev *wdev = dev->ieee80211_ptr;
14815 struct wiphy *wiphy = wdev->wiphy;
14816 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14817
14818 ASSERT_WDEV_LOCK(wdev);
14819
14820 trace_cfg80211_ch_switch_notify(dev, chandef);
14821
14822 wdev->chandef = *chandef;
14823 wdev->preset_chandef = *chandef;
14824 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14825 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14826 }
14827 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14828
14829 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14830 struct cfg80211_chan_def *chandef,
14831 u8 count)
14832 {
14833 struct wireless_dev *wdev = dev->ieee80211_ptr;
14834 struct wiphy *wiphy = wdev->wiphy;
14835 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14836
14837 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14838
14839 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14840 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14841 }
14842 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14843
14844 void
14845 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14846 const struct cfg80211_chan_def *chandef,
14847 enum nl80211_radar_event event,
14848 struct net_device *netdev, gfp_t gfp)
14849 {
14850 struct sk_buff *msg;
14851 void *hdr;
14852
14853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14854 if (!msg)
14855 return;
14856
14857 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14858 if (!hdr) {
14859 nlmsg_free(msg);
14860 return;
14861 }
14862
14863 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14864 goto nla_put_failure;
14865
14866 /* NOP and radar events don't need a netdev parameter */
14867 if (netdev) {
14868 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14869
14870 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14871 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14872 NL80211_ATTR_PAD))
14873 goto nla_put_failure;
14874 }
14875
14876 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14877 goto nla_put_failure;
14878
14879 if (nl80211_send_chandef(msg, chandef))
14880 goto nla_put_failure;
14881
14882 genlmsg_end(msg, hdr);
14883
14884 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14885 NL80211_MCGRP_MLME, gfp);
14886 return;
14887
14888 nla_put_failure:
14889 genlmsg_cancel(msg, hdr);
14890 nlmsg_free(msg);
14891 }
14892
14893 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14894 u64 cookie, bool acked, gfp_t gfp)
14895 {
14896 struct wireless_dev *wdev = dev->ieee80211_ptr;
14897 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14898 struct sk_buff *msg;
14899 void *hdr;
14900
14901 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14902
14903 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14904
14905 if (!msg)
14906 return;
14907
14908 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14909 if (!hdr) {
14910 nlmsg_free(msg);
14911 return;
14912 }
14913
14914 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14915 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14916 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14917 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14918 NL80211_ATTR_PAD) ||
14919 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14920 goto nla_put_failure;
14921
14922 genlmsg_end(msg, hdr);
14923
14924 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14925 NL80211_MCGRP_MLME, gfp);
14926 return;
14927
14928 nla_put_failure:
14929 genlmsg_cancel(msg, hdr);
14930 nlmsg_free(msg);
14931 }
14932 EXPORT_SYMBOL(cfg80211_probe_status);
14933
14934 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14935 const u8 *frame, size_t len,
14936 int freq, int sig_dbm)
14937 {
14938 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14939 struct sk_buff *msg;
14940 void *hdr;
14941 struct cfg80211_beacon_registration *reg;
14942
14943 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14944
14945 spin_lock_bh(&rdev->beacon_registrations_lock);
14946 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14947 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14948 if (!msg) {
14949 spin_unlock_bh(&rdev->beacon_registrations_lock);
14950 return;
14951 }
14952
14953 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14954 if (!hdr)
14955 goto nla_put_failure;
14956
14957 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14958 (freq &&
14959 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14960 (sig_dbm &&
14961 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14962 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14963 goto nla_put_failure;
14964
14965 genlmsg_end(msg, hdr);
14966
14967 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14968 }
14969 spin_unlock_bh(&rdev->beacon_registrations_lock);
14970 return;
14971
14972 nla_put_failure:
14973 spin_unlock_bh(&rdev->beacon_registrations_lock);
14974 if (hdr)
14975 genlmsg_cancel(msg, hdr);
14976 nlmsg_free(msg);
14977 }
14978 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14979
14980 #ifdef CONFIG_PM
14981 static int cfg80211_net_detect_results(struct sk_buff *msg,
14982 struct cfg80211_wowlan_wakeup *wakeup)
14983 {
14984 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14985 struct nlattr *nl_results, *nl_match, *nl_freqs;
14986 int i, j;
14987
14988 nl_results = nla_nest_start(
14989 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14990 if (!nl_results)
14991 return -EMSGSIZE;
14992
14993 for (i = 0; i < nd->n_matches; i++) {
14994 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14995
14996 nl_match = nla_nest_start(msg, i);
14997 if (!nl_match)
14998 break;
14999
15000 /* The SSID attribute is optional in nl80211, but for
15001 * simplicity reasons it's always present in the
15002 * cfg80211 structure. If a driver can't pass the
15003 * SSID, that needs to be changed. A zero length SSID
15004 * is still a valid SSID (wildcard), so it cannot be
15005 * used for this purpose.
15006 */
15007 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
15008 match->ssid.ssid)) {
15009 nla_nest_cancel(msg, nl_match);
15010 goto out;
15011 }
15012
15013 if (match->n_channels) {
15014 nl_freqs = nla_nest_start(
15015 msg, NL80211_ATTR_SCAN_FREQUENCIES);
15016 if (!nl_freqs) {
15017 nla_nest_cancel(msg, nl_match);
15018 goto out;
15019 }
15020
15021 for (j = 0; j < match->n_channels; j++) {
15022 if (nla_put_u32(msg, j, match->channels[j])) {
15023 nla_nest_cancel(msg, nl_freqs);
15024 nla_nest_cancel(msg, nl_match);
15025 goto out;
15026 }
15027 }
15028
15029 nla_nest_end(msg, nl_freqs);
15030 }
15031
15032 nla_nest_end(msg, nl_match);
15033 }
15034
15035 out:
15036 nla_nest_end(msg, nl_results);
15037 return 0;
15038 }
15039
15040 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15041 struct cfg80211_wowlan_wakeup *wakeup,
15042 gfp_t gfp)
15043 {
15044 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15045 struct sk_buff *msg;
15046 void *hdr;
15047 int size = 200;
15048
15049 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15050
15051 if (wakeup)
15052 size += wakeup->packet_present_len;
15053
15054 msg = nlmsg_new(size, gfp);
15055 if (!msg)
15056 return;
15057
15058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15059 if (!hdr)
15060 goto free_msg;
15061
15062 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15063 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15064 NL80211_ATTR_PAD))
15065 goto free_msg;
15066
15067 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15068 wdev->netdev->ifindex))
15069 goto free_msg;
15070
15071 if (wakeup) {
15072 struct nlattr *reasons;
15073
15074 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15075 if (!reasons)
15076 goto free_msg;
15077
15078 if (wakeup->disconnect &&
15079 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15080 goto free_msg;
15081 if (wakeup->magic_pkt &&
15082 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15083 goto free_msg;
15084 if (wakeup->gtk_rekey_failure &&
15085 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15086 goto free_msg;
15087 if (wakeup->eap_identity_req &&
15088 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15089 goto free_msg;
15090 if (wakeup->four_way_handshake &&
15091 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15092 goto free_msg;
15093 if (wakeup->rfkill_release &&
15094 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15095 goto free_msg;
15096
15097 if (wakeup->pattern_idx >= 0 &&
15098 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15099 wakeup->pattern_idx))
15100 goto free_msg;
15101
15102 if (wakeup->tcp_match &&
15103 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15104 goto free_msg;
15105
15106 if (wakeup->tcp_connlost &&
15107 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15108 goto free_msg;
15109
15110 if (wakeup->tcp_nomoretokens &&
15111 nla_put_flag(msg,
15112 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15113 goto free_msg;
15114
15115 if (wakeup->packet) {
15116 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15117 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15118
15119 if (!wakeup->packet_80211) {
15120 pkt_attr =
15121 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15122 len_attr =
15123 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15124 }
15125
15126 if (wakeup->packet_len &&
15127 nla_put_u32(msg, len_attr, wakeup->packet_len))
15128 goto free_msg;
15129
15130 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15131 wakeup->packet))
15132 goto free_msg;
15133 }
15134
15135 if (wakeup->net_detect &&
15136 cfg80211_net_detect_results(msg, wakeup))
15137 goto free_msg;
15138
15139 nla_nest_end(msg, reasons);
15140 }
15141
15142 genlmsg_end(msg, hdr);
15143
15144 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15145 NL80211_MCGRP_MLME, gfp);
15146 return;
15147
15148 free_msg:
15149 nlmsg_free(msg);
15150 }
15151 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15152 #endif
15153
15154 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15155 enum nl80211_tdls_operation oper,
15156 u16 reason_code, gfp_t gfp)
15157 {
15158 struct wireless_dev *wdev = dev->ieee80211_ptr;
15159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15160 struct sk_buff *msg;
15161 void *hdr;
15162
15163 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15164 reason_code);
15165
15166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15167 if (!msg)
15168 return;
15169
15170 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15171 if (!hdr) {
15172 nlmsg_free(msg);
15173 return;
15174 }
15175
15176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15177 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15178 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15179 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15180 (reason_code > 0 &&
15181 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15182 goto nla_put_failure;
15183
15184 genlmsg_end(msg, hdr);
15185
15186 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15187 NL80211_MCGRP_MLME, gfp);
15188 return;
15189
15190 nla_put_failure:
15191 genlmsg_cancel(msg, hdr);
15192 nlmsg_free(msg);
15193 }
15194 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15195
15196 static int nl80211_netlink_notify(struct notifier_block * nb,
15197 unsigned long state,
15198 void *_notify)
15199 {
15200 struct netlink_notify *notify = _notify;
15201 struct cfg80211_registered_device *rdev;
15202 struct wireless_dev *wdev;
15203 struct cfg80211_beacon_registration *reg, *tmp;
15204
15205 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15206 return NOTIFY_DONE;
15207
15208 rcu_read_lock();
15209
15210 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15211 struct cfg80211_sched_scan_request *sched_scan_req;
15212
15213 list_for_each_entry_rcu(sched_scan_req,
15214 &rdev->sched_scan_req_list,
15215 list) {
15216 if (sched_scan_req->owner_nlportid == notify->portid) {
15217 sched_scan_req->nl_owner_dead = true;
15218 schedule_work(&rdev->sched_scan_stop_wk);
15219 }
15220 }
15221
15222 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15223 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15224
15225 if (wdev->owner_nlportid == notify->portid) {
15226 wdev->nl_owner_dead = true;
15227 schedule_work(&rdev->destroy_work);
15228 } else if (wdev->conn_owner_nlportid == notify->portid) {
15229 schedule_work(&wdev->disconnect_wk);
15230 }
15231 }
15232
15233 spin_lock_bh(&rdev->beacon_registrations_lock);
15234 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15235 list) {
15236 if (reg->nlportid == notify->portid) {
15237 list_del(&reg->list);
15238 kfree(reg);
15239 break;
15240 }
15241 }
15242 spin_unlock_bh(&rdev->beacon_registrations_lock);
15243 }
15244
15245 rcu_read_unlock();
15246
15247 /*
15248 * It is possible that the user space process that is controlling the
15249 * indoor setting disappeared, so notify the regulatory core.
15250 */
15251 regulatory_netlink_notify(notify->portid);
15252 return NOTIFY_OK;
15253 }
15254
15255 static struct notifier_block nl80211_netlink_notifier = {
15256 .notifier_call = nl80211_netlink_notify,
15257 };
15258
15259 void cfg80211_ft_event(struct net_device *netdev,
15260 struct cfg80211_ft_event_params *ft_event)
15261 {
15262 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15263 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15264 struct sk_buff *msg;
15265 void *hdr;
15266
15267 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15268
15269 if (!ft_event->target_ap)
15270 return;
15271
15272 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15273 if (!msg)
15274 return;
15275
15276 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15277 if (!hdr)
15278 goto out;
15279
15280 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15281 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15282 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15283 goto out;
15284
15285 if (ft_event->ies &&
15286 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15287 goto out;
15288 if (ft_event->ric_ies &&
15289 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15290 ft_event->ric_ies))
15291 goto out;
15292
15293 genlmsg_end(msg, hdr);
15294
15295 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15296 NL80211_MCGRP_MLME, GFP_KERNEL);
15297 return;
15298 out:
15299 nlmsg_free(msg);
15300 }
15301 EXPORT_SYMBOL(cfg80211_ft_event);
15302
15303 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15304 {
15305 struct cfg80211_registered_device *rdev;
15306 struct sk_buff *msg;
15307 void *hdr;
15308 u32 nlportid;
15309
15310 rdev = wiphy_to_rdev(wdev->wiphy);
15311 if (!rdev->crit_proto_nlportid)
15312 return;
15313
15314 nlportid = rdev->crit_proto_nlportid;
15315 rdev->crit_proto_nlportid = 0;
15316
15317 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15318 if (!msg)
15319 return;
15320
15321 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15322 if (!hdr)
15323 goto nla_put_failure;
15324
15325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15326 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15327 NL80211_ATTR_PAD))
15328 goto nla_put_failure;
15329
15330 genlmsg_end(msg, hdr);
15331
15332 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15333 return;
15334
15335 nla_put_failure:
15336 if (hdr)
15337 genlmsg_cancel(msg, hdr);
15338 nlmsg_free(msg);
15339 }
15340 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15341
15342 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15343 {
15344 struct wiphy *wiphy = wdev->wiphy;
15345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15346 struct sk_buff *msg;
15347 void *hdr;
15348
15349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15350 if (!msg)
15351 return;
15352
15353 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15354 if (!hdr)
15355 goto out;
15356
15357 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15358 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15359 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15360 NL80211_ATTR_PAD))
15361 goto out;
15362
15363 genlmsg_end(msg, hdr);
15364
15365 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15366 NL80211_MCGRP_MLME, GFP_KERNEL);
15367 return;
15368 out:
15369 nlmsg_free(msg);
15370 }
15371
15372 /* initialisation/exit functions */
15373
15374 int __init nl80211_init(void)
15375 {
15376 int err;
15377
15378 err = genl_register_family(&nl80211_fam);
15379 if (err)
15380 return err;
15381
15382 err = netlink_register_notifier(&nl80211_netlink_notifier);
15383 if (err)
15384 goto err_out;
15385
15386 return 0;
15387 err_out:
15388 genl_unregister_family(&nl80211_fam);
15389 return err;
15390 }
15391
15392 void nl80211_exit(void)
15393 {
15394 netlink_unregister_notifier(&nl80211_netlink_notifier);
15395 genl_unregister_family(&nl80211_fam);
15396 }
CRIS linux kernel tree