]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - net/wireless/nl80211.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
nl80211: Add a missing break in parse_station_flags
[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2017 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 nlattr *key, struct key_parse *k)
739 {
740 struct nlattr *tb[NL80211_KEY_MAX + 1];
741 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
742 nl80211_key_policy, NULL);
743 if (err)
744 return err;
745
746 k->def = !!tb[NL80211_KEY_DEFAULT];
747 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
748
749 if (k->def) {
750 k->def_uni = true;
751 k->def_multi = true;
752 }
753 if (k->defmgmt)
754 k->def_multi = true;
755
756 if (tb[NL80211_KEY_IDX])
757 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
758
759 if (tb[NL80211_KEY_DATA]) {
760 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
761 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
762 }
763
764 if (tb[NL80211_KEY_SEQ]) {
765 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
766 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
767 }
768
769 if (tb[NL80211_KEY_CIPHER])
770 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
771
772 if (tb[NL80211_KEY_TYPE]) {
773 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
774 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
775 return -EINVAL;
776 }
777
778 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
779 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
780
781 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
782 tb[NL80211_KEY_DEFAULT_TYPES],
783 nl80211_key_default_policy, NULL);
784 if (err)
785 return err;
786
787 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
788 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
789 }
790
791 return 0;
792 }
793
794 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
795 {
796 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
797 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
798 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
799 }
800
801 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
802 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
803 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
804 }
805
806 if (info->attrs[NL80211_ATTR_KEY_IDX])
807 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
808
809 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
810 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
811
812 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
813 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
814
815 if (k->def) {
816 k->def_uni = true;
817 k->def_multi = true;
818 }
819 if (k->defmgmt)
820 k->def_multi = true;
821
822 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
823 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
824 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
825 return -EINVAL;
826 }
827
828 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
829 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
830 int err = nla_parse_nested(kdt,
831 NUM_NL80211_KEY_DEFAULT_TYPES - 1,
832 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
833 nl80211_key_default_policy,
834 info->extack);
835 if (err)
836 return err;
837
838 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
839 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
840 }
841
842 return 0;
843 }
844
845 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
846 {
847 int err;
848
849 memset(k, 0, sizeof(*k));
850 k->idx = -1;
851 k->type = -1;
852
853 if (info->attrs[NL80211_ATTR_KEY])
854 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
855 else
856 err = nl80211_parse_key_old(info, k);
857
858 if (err)
859 return err;
860
861 if (k->def && k->defmgmt)
862 return -EINVAL;
863
864 if (k->defmgmt) {
865 if (k->def_uni || !k->def_multi)
866 return -EINVAL;
867 }
868
869 if (k->idx != -1) {
870 if (k->defmgmt) {
871 if (k->idx < 4 || k->idx > 5)
872 return -EINVAL;
873 } else if (k->def) {
874 if (k->idx < 0 || k->idx > 3)
875 return -EINVAL;
876 } else {
877 if (k->idx < 0 || k->idx > 5)
878 return -EINVAL;
879 }
880 }
881
882 return 0;
883 }
884
885 static struct cfg80211_cached_keys *
886 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
887 struct nlattr *keys, bool *no_ht)
888 {
889 struct key_parse parse;
890 struct nlattr *key;
891 struct cfg80211_cached_keys *result;
892 int rem, err, def = 0;
893 bool have_key = false;
894
895 nla_for_each_nested(key, keys, rem) {
896 have_key = true;
897 break;
898 }
899
900 if (!have_key)
901 return NULL;
902
903 result = kzalloc(sizeof(*result), GFP_KERNEL);
904 if (!result)
905 return ERR_PTR(-ENOMEM);
906
907 result->def = -1;
908
909 nla_for_each_nested(key, keys, rem) {
910 memset(&parse, 0, sizeof(parse));
911 parse.idx = -1;
912
913 err = nl80211_parse_key_new(key, &parse);
914 if (err)
915 goto error;
916 err = -EINVAL;
917 if (!parse.p.key)
918 goto error;
919 if (parse.idx < 0 || parse.idx > 3)
920 goto error;
921 if (parse.def) {
922 if (def)
923 goto error;
924 def = 1;
925 result->def = parse.idx;
926 if (!parse.def_uni || !parse.def_multi)
927 goto error;
928 } else if (parse.defmgmt)
929 goto error;
930 err = cfg80211_validate_key_settings(rdev, &parse.p,
931 parse.idx, false, NULL);
932 if (err)
933 goto error;
934 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
935 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
936 err = -EINVAL;
937 goto error;
938 }
939 result->params[parse.idx].cipher = parse.p.cipher;
940 result->params[parse.idx].key_len = parse.p.key_len;
941 result->params[parse.idx].key = result->data[parse.idx];
942 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
943
944 /* must be WEP key if we got here */
945 if (no_ht)
946 *no_ht = true;
947 }
948
949 if (result->def < 0) {
950 err = -EINVAL;
951 goto error;
952 }
953
954 return result;
955 error:
956 kfree(result);
957 return ERR_PTR(err);
958 }
959
960 static int nl80211_key_allowed(struct wireless_dev *wdev)
961 {
962 ASSERT_WDEV_LOCK(wdev);
963
964 switch (wdev->iftype) {
965 case NL80211_IFTYPE_AP:
966 case NL80211_IFTYPE_AP_VLAN:
967 case NL80211_IFTYPE_P2P_GO:
968 case NL80211_IFTYPE_MESH_POINT:
969 break;
970 case NL80211_IFTYPE_ADHOC:
971 case NL80211_IFTYPE_STATION:
972 case NL80211_IFTYPE_P2P_CLIENT:
973 if (!wdev->current_bss)
974 return -ENOLINK;
975 break;
976 case NL80211_IFTYPE_UNSPECIFIED:
977 case NL80211_IFTYPE_OCB:
978 case NL80211_IFTYPE_MONITOR:
979 case NL80211_IFTYPE_NAN:
980 case NL80211_IFTYPE_P2P_DEVICE:
981 case NL80211_IFTYPE_WDS:
982 case NUM_NL80211_IFTYPES:
983 return -EINVAL;
984 }
985
986 return 0;
987 }
988
989 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
990 struct nlattr *tb)
991 {
992 struct ieee80211_channel *chan;
993
994 if (tb == NULL)
995 return NULL;
996 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
997 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
998 return NULL;
999 return chan;
1000 }
1001
1002 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1003 {
1004 struct nlattr *nl_modes = nla_nest_start(msg, attr);
1005 int i;
1006
1007 if (!nl_modes)
1008 goto nla_put_failure;
1009
1010 i = 0;
1011 while (ifmodes) {
1012 if ((ifmodes & 1) && nla_put_flag(msg, i))
1013 goto nla_put_failure;
1014 ifmodes >>= 1;
1015 i++;
1016 }
1017
1018 nla_nest_end(msg, nl_modes);
1019 return 0;
1020
1021 nla_put_failure:
1022 return -ENOBUFS;
1023 }
1024
1025 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1026 struct sk_buff *msg,
1027 bool large)
1028 {
1029 struct nlattr *nl_combis;
1030 int i, j;
1031
1032 nl_combis = nla_nest_start(msg,
1033 NL80211_ATTR_INTERFACE_COMBINATIONS);
1034 if (!nl_combis)
1035 goto nla_put_failure;
1036
1037 for (i = 0; i < wiphy->n_iface_combinations; i++) {
1038 const struct ieee80211_iface_combination *c;
1039 struct nlattr *nl_combi, *nl_limits;
1040
1041 c = &wiphy->iface_combinations[i];
1042
1043 nl_combi = nla_nest_start(msg, i + 1);
1044 if (!nl_combi)
1045 goto nla_put_failure;
1046
1047 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
1048 if (!nl_limits)
1049 goto nla_put_failure;
1050
1051 for (j = 0; j < c->n_limits; j++) {
1052 struct nlattr *nl_limit;
1053
1054 nl_limit = nla_nest_start(msg, j + 1);
1055 if (!nl_limit)
1056 goto nla_put_failure;
1057 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1058 c->limits[j].max))
1059 goto nla_put_failure;
1060 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1061 c->limits[j].types))
1062 goto nla_put_failure;
1063 nla_nest_end(msg, nl_limit);
1064 }
1065
1066 nla_nest_end(msg, nl_limits);
1067
1068 if (c->beacon_int_infra_match &&
1069 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1070 goto nla_put_failure;
1071 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1072 c->num_different_channels) ||
1073 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1074 c->max_interfaces))
1075 goto nla_put_failure;
1076 if (large &&
1077 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1078 c->radar_detect_widths) ||
1079 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1080 c->radar_detect_regions)))
1081 goto nla_put_failure;
1082 if (c->beacon_int_min_gcd &&
1083 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1084 c->beacon_int_min_gcd))
1085 goto nla_put_failure;
1086
1087 nla_nest_end(msg, nl_combi);
1088 }
1089
1090 nla_nest_end(msg, nl_combis);
1091
1092 return 0;
1093 nla_put_failure:
1094 return -ENOBUFS;
1095 }
1096
1097 #ifdef CONFIG_PM
1098 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1099 struct sk_buff *msg)
1100 {
1101 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1102 struct nlattr *nl_tcp;
1103
1104 if (!tcp)
1105 return 0;
1106
1107 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1108 if (!nl_tcp)
1109 return -ENOBUFS;
1110
1111 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1112 tcp->data_payload_max))
1113 return -ENOBUFS;
1114
1115 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1116 tcp->data_payload_max))
1117 return -ENOBUFS;
1118
1119 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1120 return -ENOBUFS;
1121
1122 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1123 sizeof(*tcp->tok), tcp->tok))
1124 return -ENOBUFS;
1125
1126 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1127 tcp->data_interval_max))
1128 return -ENOBUFS;
1129
1130 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1131 tcp->wake_payload_max))
1132 return -ENOBUFS;
1133
1134 nla_nest_end(msg, nl_tcp);
1135 return 0;
1136 }
1137
1138 static int nl80211_send_wowlan(struct sk_buff *msg,
1139 struct cfg80211_registered_device *rdev,
1140 bool large)
1141 {
1142 struct nlattr *nl_wowlan;
1143
1144 if (!rdev->wiphy.wowlan)
1145 return 0;
1146
1147 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1148 if (!nl_wowlan)
1149 return -ENOBUFS;
1150
1151 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1152 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1153 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1154 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1155 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1156 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1157 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1158 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1159 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1160 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1161 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1162 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1163 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1164 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1165 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1166 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1167 return -ENOBUFS;
1168
1169 if (rdev->wiphy.wowlan->n_patterns) {
1170 struct nl80211_pattern_support pat = {
1171 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1172 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1173 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1174 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1175 };
1176
1177 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1178 sizeof(pat), &pat))
1179 return -ENOBUFS;
1180 }
1181
1182 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1183 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1184 rdev->wiphy.wowlan->max_nd_match_sets))
1185 return -ENOBUFS;
1186
1187 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1188 return -ENOBUFS;
1189
1190 nla_nest_end(msg, nl_wowlan);
1191
1192 return 0;
1193 }
1194 #endif
1195
1196 static int nl80211_send_coalesce(struct sk_buff *msg,
1197 struct cfg80211_registered_device *rdev)
1198 {
1199 struct nl80211_coalesce_rule_support rule;
1200
1201 if (!rdev->wiphy.coalesce)
1202 return 0;
1203
1204 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1205 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1206 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1207 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1208 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1209 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1210
1211 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1212 return -ENOBUFS;
1213
1214 return 0;
1215 }
1216
1217 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1218 struct ieee80211_supported_band *sband)
1219 {
1220 struct nlattr *nl_rates, *nl_rate;
1221 struct ieee80211_rate *rate;
1222 int i;
1223
1224 /* add HT info */
1225 if (sband->ht_cap.ht_supported &&
1226 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1227 sizeof(sband->ht_cap.mcs),
1228 &sband->ht_cap.mcs) ||
1229 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1230 sband->ht_cap.cap) ||
1231 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1232 sband->ht_cap.ampdu_factor) ||
1233 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1234 sband->ht_cap.ampdu_density)))
1235 return -ENOBUFS;
1236
1237 /* add VHT info */
1238 if (sband->vht_cap.vht_supported &&
1239 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1240 sizeof(sband->vht_cap.vht_mcs),
1241 &sband->vht_cap.vht_mcs) ||
1242 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1243 sband->vht_cap.cap)))
1244 return -ENOBUFS;
1245
1246 /* add bitrates */
1247 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1248 if (!nl_rates)
1249 return -ENOBUFS;
1250
1251 for (i = 0; i < sband->n_bitrates; i++) {
1252 nl_rate = nla_nest_start(msg, i);
1253 if (!nl_rate)
1254 return -ENOBUFS;
1255
1256 rate = &sband->bitrates[i];
1257 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1258 rate->bitrate))
1259 return -ENOBUFS;
1260 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1261 nla_put_flag(msg,
1262 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1263 return -ENOBUFS;
1264
1265 nla_nest_end(msg, nl_rate);
1266 }
1267
1268 nla_nest_end(msg, nl_rates);
1269
1270 return 0;
1271 }
1272
1273 static int
1274 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1275 const struct ieee80211_txrx_stypes *mgmt_stypes)
1276 {
1277 u16 stypes;
1278 struct nlattr *nl_ftypes, *nl_ifs;
1279 enum nl80211_iftype ift;
1280 int i;
1281
1282 if (!mgmt_stypes)
1283 return 0;
1284
1285 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1286 if (!nl_ifs)
1287 return -ENOBUFS;
1288
1289 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1290 nl_ftypes = nla_nest_start(msg, ift);
1291 if (!nl_ftypes)
1292 return -ENOBUFS;
1293 i = 0;
1294 stypes = mgmt_stypes[ift].tx;
1295 while (stypes) {
1296 if ((stypes & 1) &&
1297 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1298 (i << 4) | IEEE80211_FTYPE_MGMT))
1299 return -ENOBUFS;
1300 stypes >>= 1;
1301 i++;
1302 }
1303 nla_nest_end(msg, nl_ftypes);
1304 }
1305
1306 nla_nest_end(msg, nl_ifs);
1307
1308 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1309 if (!nl_ifs)
1310 return -ENOBUFS;
1311
1312 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1313 nl_ftypes = nla_nest_start(msg, ift);
1314 if (!nl_ftypes)
1315 return -ENOBUFS;
1316 i = 0;
1317 stypes = mgmt_stypes[ift].rx;
1318 while (stypes) {
1319 if ((stypes & 1) &&
1320 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1321 (i << 4) | IEEE80211_FTYPE_MGMT))
1322 return -ENOBUFS;
1323 stypes >>= 1;
1324 i++;
1325 }
1326 nla_nest_end(msg, nl_ftypes);
1327 }
1328 nla_nest_end(msg, nl_ifs);
1329
1330 return 0;
1331 }
1332
1333 #define CMD(op, n) \
1334 do { \
1335 if (rdev->ops->op) { \
1336 i++; \
1337 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1338 goto nla_put_failure; \
1339 } \
1340 } while (0)
1341
1342 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1343 struct sk_buff *msg)
1344 {
1345 int i = 0;
1346
1347 /*
1348 * do *NOT* add anything into this function, new things need to be
1349 * advertised only to new versions of userspace that can deal with
1350 * the split (and they can't possibly care about new features...
1351 */
1352 CMD(add_virtual_intf, NEW_INTERFACE);
1353 CMD(change_virtual_intf, SET_INTERFACE);
1354 CMD(add_key, NEW_KEY);
1355 CMD(start_ap, START_AP);
1356 CMD(add_station, NEW_STATION);
1357 CMD(add_mpath, NEW_MPATH);
1358 CMD(update_mesh_config, SET_MESH_CONFIG);
1359 CMD(change_bss, SET_BSS);
1360 CMD(auth, AUTHENTICATE);
1361 CMD(assoc, ASSOCIATE);
1362 CMD(deauth, DEAUTHENTICATE);
1363 CMD(disassoc, DISASSOCIATE);
1364 CMD(join_ibss, JOIN_IBSS);
1365 CMD(join_mesh, JOIN_MESH);
1366 CMD(set_pmksa, SET_PMKSA);
1367 CMD(del_pmksa, DEL_PMKSA);
1368 CMD(flush_pmksa, FLUSH_PMKSA);
1369 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1370 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1371 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1372 CMD(mgmt_tx, FRAME);
1373 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1374 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1375 i++;
1376 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1377 goto nla_put_failure;
1378 }
1379 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1380 rdev->ops->join_mesh) {
1381 i++;
1382 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1383 goto nla_put_failure;
1384 }
1385 CMD(set_wds_peer, SET_WDS_PEER);
1386 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1387 CMD(tdls_mgmt, TDLS_MGMT);
1388 CMD(tdls_oper, TDLS_OPER);
1389 }
1390 if (rdev->wiphy.max_sched_scan_reqs)
1391 CMD(sched_scan_start, START_SCHED_SCAN);
1392 CMD(probe_client, PROBE_CLIENT);
1393 CMD(set_noack_map, SET_NOACK_MAP);
1394 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1395 i++;
1396 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1397 goto nla_put_failure;
1398 }
1399 CMD(start_p2p_device, START_P2P_DEVICE);
1400 CMD(set_mcast_rate, SET_MCAST_RATE);
1401 #ifdef CONFIG_NL80211_TESTMODE
1402 CMD(testmode_cmd, TESTMODE);
1403 #endif
1404
1405 if (rdev->ops->connect || rdev->ops->auth) {
1406 i++;
1407 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1408 goto nla_put_failure;
1409 }
1410
1411 if (rdev->ops->disconnect || rdev->ops->deauth) {
1412 i++;
1413 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1414 goto nla_put_failure;
1415 }
1416
1417 return i;
1418 nla_put_failure:
1419 return -ENOBUFS;
1420 }
1421
1422 struct nl80211_dump_wiphy_state {
1423 s64 filter_wiphy;
1424 long start;
1425 long split_start, band_start, chan_start, capa_start;
1426 bool split;
1427 };
1428
1429 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1430 enum nl80211_commands cmd,
1431 struct sk_buff *msg, u32 portid, u32 seq,
1432 int flags, struct nl80211_dump_wiphy_state *state)
1433 {
1434 void *hdr;
1435 struct nlattr *nl_bands, *nl_band;
1436 struct nlattr *nl_freqs, *nl_freq;
1437 struct nlattr *nl_cmds;
1438 enum nl80211_band band;
1439 struct ieee80211_channel *chan;
1440 int i;
1441 const struct ieee80211_txrx_stypes *mgmt_stypes =
1442 rdev->wiphy.mgmt_stypes;
1443 u32 features;
1444
1445 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1446 if (!hdr)
1447 return -ENOBUFS;
1448
1449 if (WARN_ON(!state))
1450 return -EINVAL;
1451
1452 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1453 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1454 wiphy_name(&rdev->wiphy)) ||
1455 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1456 cfg80211_rdev_list_generation))
1457 goto nla_put_failure;
1458
1459 if (cmd != NL80211_CMD_NEW_WIPHY)
1460 goto finish;
1461
1462 switch (state->split_start) {
1463 case 0:
1464 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1465 rdev->wiphy.retry_short) ||
1466 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1467 rdev->wiphy.retry_long) ||
1468 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1469 rdev->wiphy.frag_threshold) ||
1470 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1471 rdev->wiphy.rts_threshold) ||
1472 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1473 rdev->wiphy.coverage_class) ||
1474 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1475 rdev->wiphy.max_scan_ssids) ||
1476 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1477 rdev->wiphy.max_sched_scan_ssids) ||
1478 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1479 rdev->wiphy.max_scan_ie_len) ||
1480 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1481 rdev->wiphy.max_sched_scan_ie_len) ||
1482 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1483 rdev->wiphy.max_match_sets) ||
1484 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1485 rdev->wiphy.max_sched_scan_plans) ||
1486 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1487 rdev->wiphy.max_sched_scan_plan_interval) ||
1488 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1489 rdev->wiphy.max_sched_scan_plan_iterations))
1490 goto nla_put_failure;
1491
1492 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1493 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1494 goto nla_put_failure;
1495 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1496 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1497 goto nla_put_failure;
1498 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1499 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1500 goto nla_put_failure;
1501 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1502 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1503 goto nla_put_failure;
1504 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1505 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1506 goto nla_put_failure;
1507 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1508 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1509 goto nla_put_failure;
1510 state->split_start++;
1511 if (state->split)
1512 break;
1513 case 1:
1514 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1515 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1516 rdev->wiphy.cipher_suites))
1517 goto nla_put_failure;
1518
1519 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1520 rdev->wiphy.max_num_pmkids))
1521 goto nla_put_failure;
1522
1523 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1524 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1525 goto nla_put_failure;
1526
1527 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1528 rdev->wiphy.available_antennas_tx) ||
1529 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1530 rdev->wiphy.available_antennas_rx))
1531 goto nla_put_failure;
1532
1533 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1534 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1535 rdev->wiphy.probe_resp_offload))
1536 goto nla_put_failure;
1537
1538 if ((rdev->wiphy.available_antennas_tx ||
1539 rdev->wiphy.available_antennas_rx) &&
1540 rdev->ops->get_antenna) {
1541 u32 tx_ant = 0, rx_ant = 0;
1542 int res;
1543
1544 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1545 if (!res) {
1546 if (nla_put_u32(msg,
1547 NL80211_ATTR_WIPHY_ANTENNA_TX,
1548 tx_ant) ||
1549 nla_put_u32(msg,
1550 NL80211_ATTR_WIPHY_ANTENNA_RX,
1551 rx_ant))
1552 goto nla_put_failure;
1553 }
1554 }
1555
1556 state->split_start++;
1557 if (state->split)
1558 break;
1559 case 2:
1560 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1561 rdev->wiphy.interface_modes))
1562 goto nla_put_failure;
1563 state->split_start++;
1564 if (state->split)
1565 break;
1566 case 3:
1567 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1568 if (!nl_bands)
1569 goto nla_put_failure;
1570
1571 for (band = state->band_start;
1572 band < NUM_NL80211_BANDS; band++) {
1573 struct ieee80211_supported_band *sband;
1574
1575 sband = rdev->wiphy.bands[band];
1576
1577 if (!sband)
1578 continue;
1579
1580 nl_band = nla_nest_start(msg, band);
1581 if (!nl_band)
1582 goto nla_put_failure;
1583
1584 switch (state->chan_start) {
1585 case 0:
1586 if (nl80211_send_band_rateinfo(msg, sband))
1587 goto nla_put_failure;
1588 state->chan_start++;
1589 if (state->split)
1590 break;
1591 default:
1592 /* add frequencies */
1593 nl_freqs = nla_nest_start(
1594 msg, NL80211_BAND_ATTR_FREQS);
1595 if (!nl_freqs)
1596 goto nla_put_failure;
1597
1598 for (i = state->chan_start - 1;
1599 i < sband->n_channels;
1600 i++) {
1601 nl_freq = nla_nest_start(msg, i);
1602 if (!nl_freq)
1603 goto nla_put_failure;
1604
1605 chan = &sband->channels[i];
1606
1607 if (nl80211_msg_put_channel(
1608 msg, chan,
1609 state->split))
1610 goto nla_put_failure;
1611
1612 nla_nest_end(msg, nl_freq);
1613 if (state->split)
1614 break;
1615 }
1616 if (i < sband->n_channels)
1617 state->chan_start = i + 2;
1618 else
1619 state->chan_start = 0;
1620 nla_nest_end(msg, nl_freqs);
1621 }
1622
1623 nla_nest_end(msg, nl_band);
1624
1625 if (state->split) {
1626 /* start again here */
1627 if (state->chan_start)
1628 band--;
1629 break;
1630 }
1631 }
1632 nla_nest_end(msg, nl_bands);
1633
1634 if (band < NUM_NL80211_BANDS)
1635 state->band_start = band + 1;
1636 else
1637 state->band_start = 0;
1638
1639 /* if bands & channels are done, continue outside */
1640 if (state->band_start == 0 && state->chan_start == 0)
1641 state->split_start++;
1642 if (state->split)
1643 break;
1644 case 4:
1645 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1646 if (!nl_cmds)
1647 goto nla_put_failure;
1648
1649 i = nl80211_add_commands_unsplit(rdev, msg);
1650 if (i < 0)
1651 goto nla_put_failure;
1652 if (state->split) {
1653 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1654 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1655 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1656 CMD(channel_switch, CHANNEL_SWITCH);
1657 CMD(set_qos_map, SET_QOS_MAP);
1658 if (rdev->wiphy.features &
1659 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1660 CMD(add_tx_ts, ADD_TX_TS);
1661 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
1662 CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
1663 }
1664 #undef CMD
1665
1666 nla_nest_end(msg, nl_cmds);
1667 state->split_start++;
1668 if (state->split)
1669 break;
1670 case 5:
1671 if (rdev->ops->remain_on_channel &&
1672 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1673 nla_put_u32(msg,
1674 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1675 rdev->wiphy.max_remain_on_channel_duration))
1676 goto nla_put_failure;
1677
1678 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1679 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1680 goto nla_put_failure;
1681
1682 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1683 goto nla_put_failure;
1684 state->split_start++;
1685 if (state->split)
1686 break;
1687 case 6:
1688 #ifdef CONFIG_PM
1689 if (nl80211_send_wowlan(msg, rdev, state->split))
1690 goto nla_put_failure;
1691 state->split_start++;
1692 if (state->split)
1693 break;
1694 #else
1695 state->split_start++;
1696 #endif
1697 case 7:
1698 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1699 rdev->wiphy.software_iftypes))
1700 goto nla_put_failure;
1701
1702 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1703 state->split))
1704 goto nla_put_failure;
1705
1706 state->split_start++;
1707 if (state->split)
1708 break;
1709 case 8:
1710 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1711 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1712 rdev->wiphy.ap_sme_capa))
1713 goto nla_put_failure;
1714
1715 features = rdev->wiphy.features;
1716 /*
1717 * We can only add the per-channel limit information if the
1718 * dump is split, otherwise it makes it too big. Therefore
1719 * only advertise it in that case.
1720 */
1721 if (state->split)
1722 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1723 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1724 goto nla_put_failure;
1725
1726 if (rdev->wiphy.ht_capa_mod_mask &&
1727 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1728 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1729 rdev->wiphy.ht_capa_mod_mask))
1730 goto nla_put_failure;
1731
1732 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1733 rdev->wiphy.max_acl_mac_addrs &&
1734 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1735 rdev->wiphy.max_acl_mac_addrs))
1736 goto nla_put_failure;
1737
1738 /*
1739 * Any information below this point is only available to
1740 * applications that can deal with it being split. This
1741 * helps ensure that newly added capabilities don't break
1742 * older tools by overrunning their buffers.
1743 *
1744 * We still increment split_start so that in the split
1745 * case we'll continue with more data in the next round,
1746 * but break unconditionally so unsplit data stops here.
1747 */
1748 state->split_start++;
1749 break;
1750 case 9:
1751 if (rdev->wiphy.extended_capabilities &&
1752 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1753 rdev->wiphy.extended_capabilities_len,
1754 rdev->wiphy.extended_capabilities) ||
1755 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1756 rdev->wiphy.extended_capabilities_len,
1757 rdev->wiphy.extended_capabilities_mask)))
1758 goto nla_put_failure;
1759
1760 if (rdev->wiphy.vht_capa_mod_mask &&
1761 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1762 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1763 rdev->wiphy.vht_capa_mod_mask))
1764 goto nla_put_failure;
1765
1766 state->split_start++;
1767 break;
1768 case 10:
1769 if (nl80211_send_coalesce(msg, rdev))
1770 goto nla_put_failure;
1771
1772 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1773 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1774 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1775 goto nla_put_failure;
1776
1777 if (rdev->wiphy.max_ap_assoc_sta &&
1778 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1779 rdev->wiphy.max_ap_assoc_sta))
1780 goto nla_put_failure;
1781
1782 state->split_start++;
1783 break;
1784 case 11:
1785 if (rdev->wiphy.n_vendor_commands) {
1786 const struct nl80211_vendor_cmd_info *info;
1787 struct nlattr *nested;
1788
1789 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1790 if (!nested)
1791 goto nla_put_failure;
1792
1793 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1794 info = &rdev->wiphy.vendor_commands[i].info;
1795 if (nla_put(msg, i + 1, sizeof(*info), info))
1796 goto nla_put_failure;
1797 }
1798 nla_nest_end(msg, nested);
1799 }
1800
1801 if (rdev->wiphy.n_vendor_events) {
1802 const struct nl80211_vendor_cmd_info *info;
1803 struct nlattr *nested;
1804
1805 nested = nla_nest_start(msg,
1806 NL80211_ATTR_VENDOR_EVENTS);
1807 if (!nested)
1808 goto nla_put_failure;
1809
1810 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1811 info = &rdev->wiphy.vendor_events[i];
1812 if (nla_put(msg, i + 1, sizeof(*info), info))
1813 goto nla_put_failure;
1814 }
1815 nla_nest_end(msg, nested);
1816 }
1817 state->split_start++;
1818 break;
1819 case 12:
1820 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1821 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1822 rdev->wiphy.max_num_csa_counters))
1823 goto nla_put_failure;
1824
1825 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1826 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1827 goto nla_put_failure;
1828
1829 if (rdev->wiphy.max_sched_scan_reqs &&
1830 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
1831 rdev->wiphy.max_sched_scan_reqs))
1832 goto nla_put_failure;
1833
1834 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1835 sizeof(rdev->wiphy.ext_features),
1836 rdev->wiphy.ext_features))
1837 goto nla_put_failure;
1838
1839 if (rdev->wiphy.bss_select_support) {
1840 struct nlattr *nested;
1841 u32 bss_select_support = rdev->wiphy.bss_select_support;
1842
1843 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1844 if (!nested)
1845 goto nla_put_failure;
1846
1847 i = 0;
1848 while (bss_select_support) {
1849 if ((bss_select_support & 1) &&
1850 nla_put_flag(msg, i))
1851 goto nla_put_failure;
1852 i++;
1853 bss_select_support >>= 1;
1854 }
1855 nla_nest_end(msg, nested);
1856 }
1857
1858 state->split_start++;
1859 break;
1860 case 13:
1861 if (rdev->wiphy.num_iftype_ext_capab &&
1862 rdev->wiphy.iftype_ext_capab) {
1863 struct nlattr *nested_ext_capab, *nested;
1864
1865 nested = nla_nest_start(msg,
1866 NL80211_ATTR_IFTYPE_EXT_CAPA);
1867 if (!nested)
1868 goto nla_put_failure;
1869
1870 for (i = state->capa_start;
1871 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1872 const struct wiphy_iftype_ext_capab *capab;
1873
1874 capab = &rdev->wiphy.iftype_ext_capab[i];
1875
1876 nested_ext_capab = nla_nest_start(msg, i);
1877 if (!nested_ext_capab ||
1878 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1879 capab->iftype) ||
1880 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1881 capab->extended_capabilities_len,
1882 capab->extended_capabilities) ||
1883 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1884 capab->extended_capabilities_len,
1885 capab->extended_capabilities_mask))
1886 goto nla_put_failure;
1887
1888 nla_nest_end(msg, nested_ext_capab);
1889 if (state->split)
1890 break;
1891 }
1892 nla_nest_end(msg, nested);
1893 if (i < rdev->wiphy.num_iftype_ext_capab) {
1894 state->capa_start = i + 1;
1895 break;
1896 }
1897 }
1898
1899 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
1900 rdev->wiphy.nan_supported_bands))
1901 goto nla_put_failure;
1902
1903 /* done */
1904 state->split_start = 0;
1905 break;
1906 }
1907 finish:
1908 genlmsg_end(msg, hdr);
1909 return 0;
1910
1911 nla_put_failure:
1912 genlmsg_cancel(msg, hdr);
1913 return -EMSGSIZE;
1914 }
1915
1916 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1917 struct netlink_callback *cb,
1918 struct nl80211_dump_wiphy_state *state)
1919 {
1920 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam);
1921 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb,
1922 nl80211_fam.maxattr, nl80211_policy, NULL);
1923 /* ignore parse errors for backward compatibility */
1924 if (ret)
1925 return 0;
1926
1927 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1928 if (tb[NL80211_ATTR_WIPHY])
1929 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1930 if (tb[NL80211_ATTR_WDEV])
1931 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1932 if (tb[NL80211_ATTR_IFINDEX]) {
1933 struct net_device *netdev;
1934 struct cfg80211_registered_device *rdev;
1935 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1936
1937 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1938 if (!netdev)
1939 return -ENODEV;
1940 if (netdev->ieee80211_ptr) {
1941 rdev = wiphy_to_rdev(
1942 netdev->ieee80211_ptr->wiphy);
1943 state->filter_wiphy = rdev->wiphy_idx;
1944 }
1945 }
1946
1947 return 0;
1948 }
1949
1950 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1951 {
1952 int idx = 0, ret;
1953 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1954 struct cfg80211_registered_device *rdev;
1955
1956 rtnl_lock();
1957 if (!state) {
1958 state = kzalloc(sizeof(*state), GFP_KERNEL);
1959 if (!state) {
1960 rtnl_unlock();
1961 return -ENOMEM;
1962 }
1963 state->filter_wiphy = -1;
1964 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1965 if (ret) {
1966 kfree(state);
1967 rtnl_unlock();
1968 return ret;
1969 }
1970 cb->args[0] = (long)state;
1971 }
1972
1973 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1974 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1975 continue;
1976 if (++idx <= state->start)
1977 continue;
1978 if (state->filter_wiphy != -1 &&
1979 state->filter_wiphy != rdev->wiphy_idx)
1980 continue;
1981 /* attempt to fit multiple wiphy data chunks into the skb */
1982 do {
1983 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1984 skb,
1985 NETLINK_CB(cb->skb).portid,
1986 cb->nlh->nlmsg_seq,
1987 NLM_F_MULTI, state);
1988 if (ret < 0) {
1989 /*
1990 * If sending the wiphy data didn't fit (ENOBUFS
1991 * or EMSGSIZE returned), this SKB is still
1992 * empty (so it's not too big because another
1993 * wiphy dataset is already in the skb) and
1994 * we've not tried to adjust the dump allocation
1995 * yet ... then adjust the alloc size to be
1996 * bigger, and return 1 but with the empty skb.
1997 * This results in an empty message being RX'ed
1998 * in userspace, but that is ignored.
1999 *
2000 * We can then retry with the larger buffer.
2001 */
2002 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2003 !skb->len && !state->split &&
2004 cb->min_dump_alloc < 4096) {
2005 cb->min_dump_alloc = 4096;
2006 state->split_start = 0;
2007 rtnl_unlock();
2008 return 1;
2009 }
2010 idx--;
2011 break;
2012 }
2013 } while (state->split_start > 0);
2014 break;
2015 }
2016 rtnl_unlock();
2017
2018 state->start = idx;
2019
2020 return skb->len;
2021 }
2022
2023 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2024 {
2025 kfree((void *)cb->args[0]);
2026 return 0;
2027 }
2028
2029 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2030 {
2031 struct sk_buff *msg;
2032 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2033 struct nl80211_dump_wiphy_state state = {};
2034
2035 msg = nlmsg_new(4096, GFP_KERNEL);
2036 if (!msg)
2037 return -ENOMEM;
2038
2039 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2040 info->snd_portid, info->snd_seq, 0,
2041 &state) < 0) {
2042 nlmsg_free(msg);
2043 return -ENOBUFS;
2044 }
2045
2046 return genlmsg_reply(msg, info);
2047 }
2048
2049 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2050 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
2051 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
2052 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
2053 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
2054 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
2055 };
2056
2057 static int parse_txq_params(struct nlattr *tb[],
2058 struct ieee80211_txq_params *txq_params)
2059 {
2060 u8 ac;
2061
2062 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2063 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2064 !tb[NL80211_TXQ_ATTR_AIFS])
2065 return -EINVAL;
2066
2067 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2068 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2069 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2070 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2071 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2072
2073 if (ac >= NL80211_NUM_ACS)
2074 return -EINVAL;
2075 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2076 return 0;
2077 }
2078
2079 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2080 {
2081 /*
2082 * You can only set the channel explicitly for WDS interfaces,
2083 * all others have their channel managed via their respective
2084 * "establish a connection" command (connect, join, ...)
2085 *
2086 * For AP/GO and mesh mode, the channel can be set with the
2087 * channel userspace API, but is only stored and passed to the
2088 * low-level driver when the AP starts or the mesh is joined.
2089 * This is for backward compatibility, userspace can also give
2090 * the channel in the start-ap or join-mesh commands instead.
2091 *
2092 * Monitors are special as they are normally slaved to
2093 * whatever else is going on, so they have their own special
2094 * operation to set the monitor channel if possible.
2095 */
2096 return !wdev ||
2097 wdev->iftype == NL80211_IFTYPE_AP ||
2098 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2099 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2100 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2101 }
2102
2103 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2104 struct genl_info *info,
2105 struct cfg80211_chan_def *chandef)
2106 {
2107 u32 control_freq;
2108
2109 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2110 return -EINVAL;
2111
2112 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2113
2114 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2115 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2116 chandef->center_freq1 = control_freq;
2117 chandef->center_freq2 = 0;
2118
2119 /* Primary channel not allowed */
2120 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2121 return -EINVAL;
2122
2123 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2124 enum nl80211_channel_type chantype;
2125
2126 chantype = nla_get_u32(
2127 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2128
2129 switch (chantype) {
2130 case NL80211_CHAN_NO_HT:
2131 case NL80211_CHAN_HT20:
2132 case NL80211_CHAN_HT40PLUS:
2133 case NL80211_CHAN_HT40MINUS:
2134 cfg80211_chandef_create(chandef, chandef->chan,
2135 chantype);
2136 /* user input for center_freq is incorrect */
2137 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] &&
2138 chandef->center_freq1 != nla_get_u32(
2139 info->attrs[NL80211_ATTR_CENTER_FREQ1]))
2140 return -EINVAL;
2141 /* center_freq2 must be zero */
2142 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] &&
2143 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2]))
2144 return -EINVAL;
2145 break;
2146 default:
2147 return -EINVAL;
2148 }
2149 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2150 chandef->width =
2151 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2152 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2153 chandef->center_freq1 =
2154 nla_get_u32(
2155 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2156 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2157 chandef->center_freq2 =
2158 nla_get_u32(
2159 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2160 }
2161
2162 if (!cfg80211_chandef_valid(chandef))
2163 return -EINVAL;
2164
2165 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2166 IEEE80211_CHAN_DISABLED))
2167 return -EINVAL;
2168
2169 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2170 chandef->width == NL80211_CHAN_WIDTH_10) &&
2171 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2172 return -EINVAL;
2173
2174 return 0;
2175 }
2176
2177 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2178 struct net_device *dev,
2179 struct genl_info *info)
2180 {
2181 struct cfg80211_chan_def chandef;
2182 int result;
2183 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2184 struct wireless_dev *wdev = NULL;
2185
2186 if (dev)
2187 wdev = dev->ieee80211_ptr;
2188 if (!nl80211_can_set_dev_channel(wdev))
2189 return -EOPNOTSUPP;
2190 if (wdev)
2191 iftype = wdev->iftype;
2192
2193 result = nl80211_parse_chandef(rdev, info, &chandef);
2194 if (result)
2195 return result;
2196
2197 switch (iftype) {
2198 case NL80211_IFTYPE_AP:
2199 case NL80211_IFTYPE_P2P_GO:
2200 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2201 iftype)) {
2202 result = -EINVAL;
2203 break;
2204 }
2205 if (wdev->beacon_interval) {
2206 if (!dev || !rdev->ops->set_ap_chanwidth ||
2207 !(rdev->wiphy.features &
2208 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2209 result = -EBUSY;
2210 break;
2211 }
2212
2213 /* Only allow dynamic channel width changes */
2214 if (chandef.chan != wdev->preset_chandef.chan) {
2215 result = -EBUSY;
2216 break;
2217 }
2218 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2219 if (result)
2220 break;
2221 }
2222 wdev->preset_chandef = chandef;
2223 result = 0;
2224 break;
2225 case NL80211_IFTYPE_MESH_POINT:
2226 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2227 break;
2228 case NL80211_IFTYPE_MONITOR:
2229 result = cfg80211_set_monitor_channel(rdev, &chandef);
2230 break;
2231 default:
2232 result = -EINVAL;
2233 }
2234
2235 return result;
2236 }
2237
2238 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2239 {
2240 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2241 struct net_device *netdev = info->user_ptr[1];
2242
2243 return __nl80211_set_channel(rdev, netdev, info);
2244 }
2245
2246 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2247 {
2248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2249 struct net_device *dev = info->user_ptr[1];
2250 struct wireless_dev *wdev = dev->ieee80211_ptr;
2251 const u8 *bssid;
2252
2253 if (!info->attrs[NL80211_ATTR_MAC])
2254 return -EINVAL;
2255
2256 if (netif_running(dev))
2257 return -EBUSY;
2258
2259 if (!rdev->ops->set_wds_peer)
2260 return -EOPNOTSUPP;
2261
2262 if (wdev->iftype != NL80211_IFTYPE_WDS)
2263 return -EOPNOTSUPP;
2264
2265 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2266 return rdev_set_wds_peer(rdev, dev, bssid);
2267 }
2268
2269 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2270 {
2271 struct cfg80211_registered_device *rdev;
2272 struct net_device *netdev = NULL;
2273 struct wireless_dev *wdev;
2274 int result = 0, rem_txq_params = 0;
2275 struct nlattr *nl_txq_params;
2276 u32 changed;
2277 u8 retry_short = 0, retry_long = 0;
2278 u32 frag_threshold = 0, rts_threshold = 0;
2279 u8 coverage_class = 0;
2280
2281 ASSERT_RTNL();
2282
2283 /*
2284 * Try to find the wiphy and netdev. Normally this
2285 * function shouldn't need the netdev, but this is
2286 * done for backward compatibility -- previously
2287 * setting the channel was done per wiphy, but now
2288 * it is per netdev. Previous userland like hostapd
2289 * also passed a netdev to set_wiphy, so that it is
2290 * possible to let that go to the right netdev!
2291 */
2292
2293 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2294 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2295
2296 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2297 if (netdev && netdev->ieee80211_ptr)
2298 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2299 else
2300 netdev = NULL;
2301 }
2302
2303 if (!netdev) {
2304 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2305 info->attrs);
2306 if (IS_ERR(rdev))
2307 return PTR_ERR(rdev);
2308 wdev = NULL;
2309 netdev = NULL;
2310 result = 0;
2311 } else
2312 wdev = netdev->ieee80211_ptr;
2313
2314 /*
2315 * end workaround code, by now the rdev is available
2316 * and locked, and wdev may or may not be NULL.
2317 */
2318
2319 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2320 result = cfg80211_dev_rename(
2321 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2322
2323 if (result)
2324 return result;
2325
2326 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2327 struct ieee80211_txq_params txq_params;
2328 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2329
2330 if (!rdev->ops->set_txq_params)
2331 return -EOPNOTSUPP;
2332
2333 if (!netdev)
2334 return -EINVAL;
2335
2336 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2337 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2338 return -EINVAL;
2339
2340 if (!netif_running(netdev))
2341 return -ENETDOWN;
2342
2343 nla_for_each_nested(nl_txq_params,
2344 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2345 rem_txq_params) {
2346 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX,
2347 nl_txq_params,
2348 txq_params_policy,
2349 info->extack);
2350 if (result)
2351 return result;
2352 result = parse_txq_params(tb, &txq_params);
2353 if (result)
2354 return result;
2355
2356 result = rdev_set_txq_params(rdev, netdev,
2357 &txq_params);
2358 if (result)
2359 return result;
2360 }
2361 }
2362
2363 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2364 result = __nl80211_set_channel(
2365 rdev,
2366 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2367 info);
2368 if (result)
2369 return result;
2370 }
2371
2372 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2373 struct wireless_dev *txp_wdev = wdev;
2374 enum nl80211_tx_power_setting type;
2375 int idx, mbm = 0;
2376
2377 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2378 txp_wdev = NULL;
2379
2380 if (!rdev->ops->set_tx_power)
2381 return -EOPNOTSUPP;
2382
2383 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2384 type = nla_get_u32(info->attrs[idx]);
2385
2386 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2387 (type != NL80211_TX_POWER_AUTOMATIC))
2388 return -EINVAL;
2389
2390 if (type != NL80211_TX_POWER_AUTOMATIC) {
2391 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2392 mbm = nla_get_u32(info->attrs[idx]);
2393 }
2394
2395 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2396 if (result)
2397 return result;
2398 }
2399
2400 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2401 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2402 u32 tx_ant, rx_ant;
2403
2404 if ((!rdev->wiphy.available_antennas_tx &&
2405 !rdev->wiphy.available_antennas_rx) ||
2406 !rdev->ops->set_antenna)
2407 return -EOPNOTSUPP;
2408
2409 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2410 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2411
2412 /* reject antenna configurations which don't match the
2413 * available antenna masks, except for the "all" mask */
2414 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2415 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2416 return -EINVAL;
2417
2418 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2419 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2420
2421 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2422 if (result)
2423 return result;
2424 }
2425
2426 changed = 0;
2427
2428 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2429 retry_short = nla_get_u8(
2430 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2431 if (retry_short == 0)
2432 return -EINVAL;
2433
2434 changed |= WIPHY_PARAM_RETRY_SHORT;
2435 }
2436
2437 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2438 retry_long = nla_get_u8(
2439 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2440 if (retry_long == 0)
2441 return -EINVAL;
2442
2443 changed |= WIPHY_PARAM_RETRY_LONG;
2444 }
2445
2446 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2447 frag_threshold = nla_get_u32(
2448 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2449 if (frag_threshold < 256)
2450 return -EINVAL;
2451
2452 if (frag_threshold != (u32) -1) {
2453 /*
2454 * Fragments (apart from the last one) are required to
2455 * have even length. Make the fragmentation code
2456 * simpler by stripping LSB should someone try to use
2457 * odd threshold value.
2458 */
2459 frag_threshold &= ~0x1;
2460 }
2461 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2462 }
2463
2464 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2465 rts_threshold = nla_get_u32(
2466 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2467 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2468 }
2469
2470 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2471 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2472 return -EINVAL;
2473
2474 coverage_class = nla_get_u8(
2475 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2476 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2477 }
2478
2479 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2480 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2481 return -EOPNOTSUPP;
2482
2483 changed |= WIPHY_PARAM_DYN_ACK;
2484 }
2485
2486 if (changed) {
2487 u8 old_retry_short, old_retry_long;
2488 u32 old_frag_threshold, old_rts_threshold;
2489 u8 old_coverage_class;
2490
2491 if (!rdev->ops->set_wiphy_params)
2492 return -EOPNOTSUPP;
2493
2494 old_retry_short = rdev->wiphy.retry_short;
2495 old_retry_long = rdev->wiphy.retry_long;
2496 old_frag_threshold = rdev->wiphy.frag_threshold;
2497 old_rts_threshold = rdev->wiphy.rts_threshold;
2498 old_coverage_class = rdev->wiphy.coverage_class;
2499
2500 if (changed & WIPHY_PARAM_RETRY_SHORT)
2501 rdev->wiphy.retry_short = retry_short;
2502 if (changed & WIPHY_PARAM_RETRY_LONG)
2503 rdev->wiphy.retry_long = retry_long;
2504 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2505 rdev->wiphy.frag_threshold = frag_threshold;
2506 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2507 rdev->wiphy.rts_threshold = rts_threshold;
2508 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2509 rdev->wiphy.coverage_class = coverage_class;
2510
2511 result = rdev_set_wiphy_params(rdev, changed);
2512 if (result) {
2513 rdev->wiphy.retry_short = old_retry_short;
2514 rdev->wiphy.retry_long = old_retry_long;
2515 rdev->wiphy.frag_threshold = old_frag_threshold;
2516 rdev->wiphy.rts_threshold = old_rts_threshold;
2517 rdev->wiphy.coverage_class = old_coverage_class;
2518 return result;
2519 }
2520 }
2521 return 0;
2522 }
2523
2524 static inline u64 wdev_id(struct wireless_dev *wdev)
2525 {
2526 return (u64)wdev->identifier |
2527 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2528 }
2529
2530 static int nl80211_send_chandef(struct sk_buff *msg,
2531 const struct cfg80211_chan_def *chandef)
2532 {
2533 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2534 return -EINVAL;
2535
2536 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2537 chandef->chan->center_freq))
2538 return -ENOBUFS;
2539 switch (chandef->width) {
2540 case NL80211_CHAN_WIDTH_20_NOHT:
2541 case NL80211_CHAN_WIDTH_20:
2542 case NL80211_CHAN_WIDTH_40:
2543 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2544 cfg80211_get_chandef_type(chandef)))
2545 return -ENOBUFS;
2546 break;
2547 default:
2548 break;
2549 }
2550 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2551 return -ENOBUFS;
2552 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2553 return -ENOBUFS;
2554 if (chandef->center_freq2 &&
2555 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2556 return -ENOBUFS;
2557 return 0;
2558 }
2559
2560 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2561 struct cfg80211_registered_device *rdev,
2562 struct wireless_dev *wdev, bool removal)
2563 {
2564 struct net_device *dev = wdev->netdev;
2565 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2566 void *hdr;
2567
2568 if (removal)
2569 cmd = NL80211_CMD_DEL_INTERFACE;
2570
2571 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2572 if (!hdr)
2573 return -1;
2574
2575 if (dev &&
2576 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2577 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2578 goto nla_put_failure;
2579
2580 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2581 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2582 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2583 NL80211_ATTR_PAD) ||
2584 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2585 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2586 rdev->devlist_generation ^
2587 (cfg80211_rdev_list_generation << 2)))
2588 goto nla_put_failure;
2589
2590 if (rdev->ops->get_channel) {
2591 int ret;
2592 struct cfg80211_chan_def chandef;
2593
2594 ret = rdev_get_channel(rdev, wdev, &chandef);
2595 if (ret == 0) {
2596 if (nl80211_send_chandef(msg, &chandef))
2597 goto nla_put_failure;
2598 }
2599 }
2600
2601 if (rdev->ops->get_tx_power) {
2602 int dbm, ret;
2603
2604 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2605 if (ret == 0 &&
2606 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2607 DBM_TO_MBM(dbm)))
2608 goto nla_put_failure;
2609 }
2610
2611 wdev_lock(wdev);
2612 switch (wdev->iftype) {
2613 case NL80211_IFTYPE_AP:
2614 if (wdev->ssid_len &&
2615 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2616 goto nla_put_failure_locked;
2617 break;
2618 case NL80211_IFTYPE_STATION:
2619 case NL80211_IFTYPE_P2P_CLIENT:
2620 case NL80211_IFTYPE_ADHOC: {
2621 const u8 *ssid_ie;
2622 if (!wdev->current_bss)
2623 break;
2624 rcu_read_lock();
2625 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
2626 WLAN_EID_SSID);
2627 if (ssid_ie &&
2628 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
2629 goto nla_put_failure_rcu_locked;
2630 rcu_read_unlock();
2631 break;
2632 }
2633 default:
2634 /* nothing */
2635 break;
2636 }
2637 wdev_unlock(wdev);
2638
2639 genlmsg_end(msg, hdr);
2640 return 0;
2641
2642 nla_put_failure_rcu_locked:
2643 rcu_read_unlock();
2644 nla_put_failure_locked:
2645 wdev_unlock(wdev);
2646 nla_put_failure:
2647 genlmsg_cancel(msg, hdr);
2648 return -EMSGSIZE;
2649 }
2650
2651 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2652 {
2653 int wp_idx = 0;
2654 int if_idx = 0;
2655 int wp_start = cb->args[0];
2656 int if_start = cb->args[1];
2657 int filter_wiphy = -1;
2658 struct cfg80211_registered_device *rdev;
2659 struct wireless_dev *wdev;
2660 int ret;
2661
2662 rtnl_lock();
2663 if (!cb->args[2]) {
2664 struct nl80211_dump_wiphy_state state = {
2665 .filter_wiphy = -1,
2666 };
2667
2668 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
2669 if (ret)
2670 goto out_unlock;
2671
2672 filter_wiphy = state.filter_wiphy;
2673
2674 /*
2675 * if filtering, set cb->args[2] to +1 since 0 is the default
2676 * value needed to determine that parsing is necessary.
2677 */
2678 if (filter_wiphy >= 0)
2679 cb->args[2] = filter_wiphy + 1;
2680 else
2681 cb->args[2] = -1;
2682 } else if (cb->args[2] > 0) {
2683 filter_wiphy = cb->args[2] - 1;
2684 }
2685
2686 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2687 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2688 continue;
2689 if (wp_idx < wp_start) {
2690 wp_idx++;
2691 continue;
2692 }
2693
2694 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
2695 continue;
2696
2697 if_idx = 0;
2698
2699 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2700 if (if_idx < if_start) {
2701 if_idx++;
2702 continue;
2703 }
2704 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2705 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2706 rdev, wdev, false) < 0) {
2707 goto out;
2708 }
2709 if_idx++;
2710 }
2711
2712 wp_idx++;
2713 }
2714 out:
2715 cb->args[0] = wp_idx;
2716 cb->args[1] = if_idx;
2717
2718 ret = skb->len;
2719 out_unlock:
2720 rtnl_unlock();
2721
2722 return ret;
2723 }
2724
2725 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2726 {
2727 struct sk_buff *msg;
2728 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2729 struct wireless_dev *wdev = info->user_ptr[1];
2730
2731 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2732 if (!msg)
2733 return -ENOMEM;
2734
2735 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2736 rdev, wdev, false) < 0) {
2737 nlmsg_free(msg);
2738 return -ENOBUFS;
2739 }
2740
2741 return genlmsg_reply(msg, info);
2742 }
2743
2744 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2745 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2746 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2747 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2748 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2749 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2750 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2751 };
2752
2753 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2754 {
2755 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2756 int flag;
2757
2758 *mntrflags = 0;
2759
2760 if (!nla)
2761 return -EINVAL;
2762
2763 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla,
2764 mntr_flags_policy, NULL))
2765 return -EINVAL;
2766
2767 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2768 if (flags[flag])
2769 *mntrflags |= (1<<flag);
2770
2771 *mntrflags |= MONITOR_FLAG_CHANGED;
2772
2773 return 0;
2774 }
2775
2776 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
2777 enum nl80211_iftype type,
2778 struct genl_info *info,
2779 struct vif_params *params)
2780 {
2781 bool change = false;
2782 int err;
2783
2784 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2785 if (type != NL80211_IFTYPE_MONITOR)
2786 return -EINVAL;
2787
2788 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2789 &params->flags);
2790 if (err)
2791 return err;
2792
2793 change = true;
2794 }
2795
2796 if (params->flags & MONITOR_FLAG_ACTIVE &&
2797 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2798 return -EOPNOTSUPP;
2799
2800 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2801 const u8 *mumimo_groups;
2802 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2803
2804 if (type != NL80211_IFTYPE_MONITOR)
2805 return -EINVAL;
2806
2807 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2808 return -EOPNOTSUPP;
2809
2810 mumimo_groups =
2811 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2812
2813 /* bits 0 and 63 are reserved and must be zero */
2814 if ((mumimo_groups[0] & BIT(0)) ||
2815 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
2816 return -EINVAL;
2817
2818 params->vht_mumimo_groups = mumimo_groups;
2819 change = true;
2820 }
2821
2822 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2823 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2824
2825 if (type != NL80211_IFTYPE_MONITOR)
2826 return -EINVAL;
2827
2828 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2829 return -EOPNOTSUPP;
2830
2831 params->vht_mumimo_follow_addr =
2832 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
2833 change = true;
2834 }
2835
2836 return change ? 1 : 0;
2837 }
2838
2839 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2840 struct net_device *netdev, u8 use_4addr,
2841 enum nl80211_iftype iftype)
2842 {
2843 if (!use_4addr) {
2844 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2845 return -EBUSY;
2846 return 0;
2847 }
2848
2849 switch (iftype) {
2850 case NL80211_IFTYPE_AP_VLAN:
2851 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2852 return 0;
2853 break;
2854 case NL80211_IFTYPE_STATION:
2855 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2856 return 0;
2857 break;
2858 default:
2859 break;
2860 }
2861
2862 return -EOPNOTSUPP;
2863 }
2864
2865 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2866 {
2867 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2868 struct vif_params params;
2869 int err;
2870 enum nl80211_iftype otype, ntype;
2871 struct net_device *dev = info->user_ptr[1];
2872 bool change = false;
2873
2874 memset(&params, 0, sizeof(params));
2875
2876 otype = ntype = dev->ieee80211_ptr->iftype;
2877
2878 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2879 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2880 if (otype != ntype)
2881 change = true;
2882 if (ntype > NL80211_IFTYPE_MAX)
2883 return -EINVAL;
2884 }
2885
2886 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2887 struct wireless_dev *wdev = dev->ieee80211_ptr;
2888
2889 if (ntype != NL80211_IFTYPE_MESH_POINT)
2890 return -EINVAL;
2891 if (netif_running(dev))
2892 return -EBUSY;
2893
2894 wdev_lock(wdev);
2895 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2896 IEEE80211_MAX_MESH_ID_LEN);
2897 wdev->mesh_id_up_len =
2898 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2899 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2900 wdev->mesh_id_up_len);
2901 wdev_unlock(wdev);
2902 }
2903
2904 if (info->attrs[NL80211_ATTR_4ADDR]) {
2905 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2906 change = true;
2907 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2908 if (err)
2909 return err;
2910 } else {
2911 params.use_4addr = -1;
2912 }
2913
2914 err = nl80211_parse_mon_options(rdev, ntype, info, &params);
2915 if (err < 0)
2916 return err;
2917 if (err > 0)
2918 change = true;
2919
2920 if (change)
2921 err = cfg80211_change_iface(rdev, dev, ntype, &params);
2922 else
2923 err = 0;
2924
2925 if (!err && params.use_4addr != -1)
2926 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2927
2928 return err;
2929 }
2930
2931 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2932 {
2933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2934 struct vif_params params;
2935 struct wireless_dev *wdev;
2936 struct sk_buff *msg;
2937 int err;
2938 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2939
2940 /* to avoid failing a new interface creation due to pending removal */
2941 cfg80211_destroy_ifaces(rdev);
2942
2943 memset(&params, 0, sizeof(params));
2944
2945 if (!info->attrs[NL80211_ATTR_IFNAME])
2946 return -EINVAL;
2947
2948 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2949 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2950 if (type > NL80211_IFTYPE_MAX)
2951 return -EINVAL;
2952 }
2953
2954 if (!rdev->ops->add_virtual_intf ||
2955 !(rdev->wiphy.interface_modes & (1 << type)))
2956 return -EOPNOTSUPP;
2957
2958 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
2959 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2960 info->attrs[NL80211_ATTR_MAC]) {
2961 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2962 ETH_ALEN);
2963 if (!is_valid_ether_addr(params.macaddr))
2964 return -EADDRNOTAVAIL;
2965 }
2966
2967 if (info->attrs[NL80211_ATTR_4ADDR]) {
2968 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2969 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2970 if (err)
2971 return err;
2972 }
2973
2974 err = nl80211_parse_mon_options(rdev, type, info, &params);
2975 if (err < 0)
2976 return err;
2977
2978 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2979 if (!msg)
2980 return -ENOMEM;
2981
2982 wdev = rdev_add_virtual_intf(rdev,
2983 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2984 NET_NAME_USER, type, &params);
2985 if (WARN_ON(!wdev)) {
2986 nlmsg_free(msg);
2987 return -EPROTO;
2988 } else if (IS_ERR(wdev)) {
2989 nlmsg_free(msg);
2990 return PTR_ERR(wdev);
2991 }
2992
2993 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2994 wdev->owner_nlportid = info->snd_portid;
2995
2996 switch (type) {
2997 case NL80211_IFTYPE_MESH_POINT:
2998 if (!info->attrs[NL80211_ATTR_MESH_ID])
2999 break;
3000 wdev_lock(wdev);
3001 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3002 IEEE80211_MAX_MESH_ID_LEN);
3003 wdev->mesh_id_up_len =
3004 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3005 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3006 wdev->mesh_id_up_len);
3007 wdev_unlock(wdev);
3008 break;
3009 case NL80211_IFTYPE_NAN:
3010 case NL80211_IFTYPE_P2P_DEVICE:
3011 /*
3012 * P2P Device and NAN do not have a netdev, so don't go
3013 * through the netdev notifier and must be added here
3014 */
3015 mutex_init(&wdev->mtx);
3016 INIT_LIST_HEAD(&wdev->event_list);
3017 spin_lock_init(&wdev->event_lock);
3018 INIT_LIST_HEAD(&wdev->mgmt_registrations);
3019 spin_lock_init(&wdev->mgmt_registrations_lock);
3020
3021 wdev->identifier = ++rdev->wdev_id;
3022 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
3023 rdev->devlist_generation++;
3024 break;
3025 default:
3026 break;
3027 }
3028
3029 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3030 rdev, wdev, false) < 0) {
3031 nlmsg_free(msg);
3032 return -ENOBUFS;
3033 }
3034
3035 /*
3036 * For wdevs which have no associated netdev object (e.g. of type
3037 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here.
3038 * For all other types, the event will be generated from the
3039 * netdev notifier
3040 */
3041 if (!wdev->netdev)
3042 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
3043
3044 return genlmsg_reply(msg, info);
3045 }
3046
3047 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3048 {
3049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3050 struct wireless_dev *wdev = info->user_ptr[1];
3051
3052 if (!rdev->ops->del_virtual_intf)
3053 return -EOPNOTSUPP;
3054
3055 /*
3056 * If we remove a wireless device without a netdev then clear
3057 * user_ptr[1] so that nl80211_post_doit won't dereference it
3058 * to check if it needs to do dev_put(). Otherwise it crashes
3059 * since the wdev has been freed, unlike with a netdev where
3060 * we need the dev_put() for the netdev to really be freed.
3061 */
3062 if (!wdev->netdev)
3063 info->user_ptr[1] = NULL;
3064
3065 return rdev_del_virtual_intf(rdev, wdev);
3066 }
3067
3068 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3069 {
3070 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3071 struct net_device *dev = info->user_ptr[1];
3072 u16 noack_map;
3073
3074 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3075 return -EINVAL;
3076
3077 if (!rdev->ops->set_noack_map)
3078 return -EOPNOTSUPP;
3079
3080 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3081
3082 return rdev_set_noack_map(rdev, dev, noack_map);
3083 }
3084
3085 struct get_key_cookie {
3086 struct sk_buff *msg;
3087 int error;
3088 int idx;
3089 };
3090
3091 static void get_key_callback(void *c, struct key_params *params)
3092 {
3093 struct nlattr *key;
3094 struct get_key_cookie *cookie = c;
3095
3096 if ((params->key &&
3097 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3098 params->key_len, params->key)) ||
3099 (params->seq &&
3100 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3101 params->seq_len, params->seq)) ||
3102 (params->cipher &&
3103 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3104 params->cipher)))
3105 goto nla_put_failure;
3106
3107 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
3108 if (!key)
3109 goto nla_put_failure;
3110
3111 if ((params->key &&
3112 nla_put(cookie->msg, NL80211_KEY_DATA,
3113 params->key_len, params->key)) ||
3114 (params->seq &&
3115 nla_put(cookie->msg, NL80211_KEY_SEQ,
3116 params->seq_len, params->seq)) ||
3117 (params->cipher &&
3118 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3119 params->cipher)))
3120 goto nla_put_failure;
3121
3122 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
3123 goto nla_put_failure;
3124
3125 nla_nest_end(cookie->msg, key);
3126
3127 return;
3128 nla_put_failure:
3129 cookie->error = 1;
3130 }
3131
3132 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3133 {
3134 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3135 int err;
3136 struct net_device *dev = info->user_ptr[1];
3137 u8 key_idx = 0;
3138 const u8 *mac_addr = NULL;
3139 bool pairwise;
3140 struct get_key_cookie cookie = {
3141 .error = 0,
3142 };
3143 void *hdr;
3144 struct sk_buff *msg;
3145
3146 if (info->attrs[NL80211_ATTR_KEY_IDX])
3147 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3148
3149 if (key_idx > 5)
3150 return -EINVAL;
3151
3152 if (info->attrs[NL80211_ATTR_MAC])
3153 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3154
3155 pairwise = !!mac_addr;
3156 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3157 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3158
3159 if (kt >= NUM_NL80211_KEYTYPES)
3160 return -EINVAL;
3161 if (kt != NL80211_KEYTYPE_GROUP &&
3162 kt != NL80211_KEYTYPE_PAIRWISE)
3163 return -EINVAL;
3164 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3165 }
3166
3167 if (!rdev->ops->get_key)
3168 return -EOPNOTSUPP;
3169
3170 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3171 return -ENOENT;
3172
3173 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3174 if (!msg)
3175 return -ENOMEM;
3176
3177 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3178 NL80211_CMD_NEW_KEY);
3179 if (!hdr)
3180 goto nla_put_failure;
3181
3182 cookie.msg = msg;
3183 cookie.idx = key_idx;
3184
3185 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3186 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3187 goto nla_put_failure;
3188 if (mac_addr &&
3189 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3190 goto nla_put_failure;
3191
3192 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3193 get_key_callback);
3194
3195 if (err)
3196 goto free_msg;
3197
3198 if (cookie.error)
3199 goto nla_put_failure;
3200
3201 genlmsg_end(msg, hdr);
3202 return genlmsg_reply(msg, info);
3203
3204 nla_put_failure:
3205 err = -ENOBUFS;
3206 free_msg:
3207 nlmsg_free(msg);
3208 return err;
3209 }
3210
3211 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3212 {
3213 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3214 struct key_parse key;
3215 int err;
3216 struct net_device *dev = info->user_ptr[1];
3217
3218 err = nl80211_parse_key(info, &key);
3219 if (err)
3220 return err;
3221
3222 if (key.idx < 0)
3223 return -EINVAL;
3224
3225 /* only support setting default key */
3226 if (!key.def && !key.defmgmt)
3227 return -EINVAL;
3228
3229 wdev_lock(dev->ieee80211_ptr);
3230
3231 if (key.def) {
3232 if (!rdev->ops->set_default_key) {
3233 err = -EOPNOTSUPP;
3234 goto out;
3235 }
3236
3237 err = nl80211_key_allowed(dev->ieee80211_ptr);
3238 if (err)
3239 goto out;
3240
3241 err = rdev_set_default_key(rdev, dev, key.idx,
3242 key.def_uni, key.def_multi);
3243
3244 if (err)
3245 goto out;
3246
3247 #ifdef CONFIG_CFG80211_WEXT
3248 dev->ieee80211_ptr->wext.default_key = key.idx;
3249 #endif
3250 } else {
3251 if (key.def_uni || !key.def_multi) {
3252 err = -EINVAL;
3253 goto out;
3254 }
3255
3256 if (!rdev->ops->set_default_mgmt_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_mgmt_key(rdev, dev, key.idx);
3266 if (err)
3267 goto out;
3268
3269 #ifdef CONFIG_CFG80211_WEXT
3270 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3271 #endif
3272 }
3273
3274 out:
3275 wdev_unlock(dev->ieee80211_ptr);
3276
3277 return err;
3278 }
3279
3280 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3281 {
3282 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3283 int err;
3284 struct net_device *dev = info->user_ptr[1];
3285 struct key_parse key;
3286 const u8 *mac_addr = NULL;
3287
3288 err = nl80211_parse_key(info, &key);
3289 if (err)
3290 return err;
3291
3292 if (!key.p.key)
3293 return -EINVAL;
3294
3295 if (info->attrs[NL80211_ATTR_MAC])
3296 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3297
3298 if (key.type == -1) {
3299 if (mac_addr)
3300 key.type = NL80211_KEYTYPE_PAIRWISE;
3301 else
3302 key.type = NL80211_KEYTYPE_GROUP;
3303 }
3304
3305 /* for now */
3306 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3307 key.type != NL80211_KEYTYPE_GROUP)
3308 return -EINVAL;
3309
3310 if (!rdev->ops->add_key)
3311 return -EOPNOTSUPP;
3312
3313 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3314 key.type == NL80211_KEYTYPE_PAIRWISE,
3315 mac_addr))
3316 return -EINVAL;
3317
3318 wdev_lock(dev->ieee80211_ptr);
3319 err = nl80211_key_allowed(dev->ieee80211_ptr);
3320 if (!err)
3321 err = rdev_add_key(rdev, dev, key.idx,
3322 key.type == NL80211_KEYTYPE_PAIRWISE,
3323 mac_addr, &key.p);
3324 wdev_unlock(dev->ieee80211_ptr);
3325
3326 return err;
3327 }
3328
3329 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3330 {
3331 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3332 int err;
3333 struct net_device *dev = info->user_ptr[1];
3334 u8 *mac_addr = NULL;
3335 struct key_parse key;
3336
3337 err = nl80211_parse_key(info, &key);
3338 if (err)
3339 return err;
3340
3341 if (info->attrs[NL80211_ATTR_MAC])
3342 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3343
3344 if (key.type == -1) {
3345 if (mac_addr)
3346 key.type = NL80211_KEYTYPE_PAIRWISE;
3347 else
3348 key.type = NL80211_KEYTYPE_GROUP;
3349 }
3350
3351 /* for now */
3352 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3353 key.type != NL80211_KEYTYPE_GROUP)
3354 return -EINVAL;
3355
3356 if (!rdev->ops->del_key)
3357 return -EOPNOTSUPP;
3358
3359 wdev_lock(dev->ieee80211_ptr);
3360 err = nl80211_key_allowed(dev->ieee80211_ptr);
3361
3362 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3363 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3364 err = -ENOENT;
3365
3366 if (!err)
3367 err = rdev_del_key(rdev, dev, key.idx,
3368 key.type == NL80211_KEYTYPE_PAIRWISE,
3369 mac_addr);
3370
3371 #ifdef CONFIG_CFG80211_WEXT
3372 if (!err) {
3373 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3374 dev->ieee80211_ptr->wext.default_key = -1;
3375 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3376 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3377 }
3378 #endif
3379 wdev_unlock(dev->ieee80211_ptr);
3380
3381 return err;
3382 }
3383
3384 /* This function returns an error or the number of nested attributes */
3385 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3386 {
3387 struct nlattr *attr;
3388 int n_entries = 0, tmp;
3389
3390 nla_for_each_nested(attr, nl_attr, tmp) {
3391 if (nla_len(attr) != ETH_ALEN)
3392 return -EINVAL;
3393
3394 n_entries++;
3395 }
3396
3397 return n_entries;
3398 }
3399
3400 /*
3401 * This function parses ACL information and allocates memory for ACL data.
3402 * On successful return, the calling function is responsible to free the
3403 * ACL buffer returned by this function.
3404 */
3405 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3406 struct genl_info *info)
3407 {
3408 enum nl80211_acl_policy acl_policy;
3409 struct nlattr *attr;
3410 struct cfg80211_acl_data *acl;
3411 int i = 0, n_entries, tmp;
3412
3413 if (!wiphy->max_acl_mac_addrs)
3414 return ERR_PTR(-EOPNOTSUPP);
3415
3416 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3417 return ERR_PTR(-EINVAL);
3418
3419 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3420 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3421 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3422 return ERR_PTR(-EINVAL);
3423
3424 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3425 return ERR_PTR(-EINVAL);
3426
3427 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3428 if (n_entries < 0)
3429 return ERR_PTR(n_entries);
3430
3431 if (n_entries > wiphy->max_acl_mac_addrs)
3432 return ERR_PTR(-ENOTSUPP);
3433
3434 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3435 GFP_KERNEL);
3436 if (!acl)
3437 return ERR_PTR(-ENOMEM);
3438
3439 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3440 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3441 i++;
3442 }
3443
3444 acl->n_acl_entries = n_entries;
3445 acl->acl_policy = acl_policy;
3446
3447 return acl;
3448 }
3449
3450 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3451 {
3452 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3453 struct net_device *dev = info->user_ptr[1];
3454 struct cfg80211_acl_data *acl;
3455 int err;
3456
3457 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3458 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3459 return -EOPNOTSUPP;
3460
3461 if (!dev->ieee80211_ptr->beacon_interval)
3462 return -EINVAL;
3463
3464 acl = parse_acl_data(&rdev->wiphy, info);
3465 if (IS_ERR(acl))
3466 return PTR_ERR(acl);
3467
3468 err = rdev_set_mac_acl(rdev, dev, acl);
3469
3470 kfree(acl);
3471
3472 return err;
3473 }
3474
3475 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
3476 u8 *rates, u8 rates_len)
3477 {
3478 u8 i;
3479 u32 mask = 0;
3480
3481 for (i = 0; i < rates_len; i++) {
3482 int rate = (rates[i] & 0x7f) * 5;
3483 int ridx;
3484
3485 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
3486 struct ieee80211_rate *srate =
3487 &sband->bitrates[ridx];
3488 if (rate == srate->bitrate) {
3489 mask |= 1 << ridx;
3490 break;
3491 }
3492 }
3493 if (ridx == sband->n_bitrates)
3494 return 0; /* rate not found */
3495 }
3496
3497 return mask;
3498 }
3499
3500 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
3501 u8 *rates, u8 rates_len,
3502 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
3503 {
3504 u8 i;
3505
3506 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
3507
3508 for (i = 0; i < rates_len; i++) {
3509 int ridx, rbit;
3510
3511 ridx = rates[i] / 8;
3512 rbit = BIT(rates[i] % 8);
3513
3514 /* check validity */
3515 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
3516 return false;
3517
3518 /* check availability */
3519 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
3520 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
3521 mcs[ridx] |= rbit;
3522 else
3523 return false;
3524 }
3525
3526 return true;
3527 }
3528
3529 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
3530 {
3531 u16 mcs_mask = 0;
3532
3533 switch (vht_mcs_map) {
3534 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
3535 break;
3536 case IEEE80211_VHT_MCS_SUPPORT_0_7:
3537 mcs_mask = 0x00FF;
3538 break;
3539 case IEEE80211_VHT_MCS_SUPPORT_0_8:
3540 mcs_mask = 0x01FF;
3541 break;
3542 case IEEE80211_VHT_MCS_SUPPORT_0_9:
3543 mcs_mask = 0x03FF;
3544 break;
3545 default:
3546 break;
3547 }
3548
3549 return mcs_mask;
3550 }
3551
3552 static void vht_build_mcs_mask(u16 vht_mcs_map,
3553 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
3554 {
3555 u8 nss;
3556
3557 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
3558 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
3559 vht_mcs_map >>= 2;
3560 }
3561 }
3562
3563 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
3564 struct nl80211_txrate_vht *txrate,
3565 u16 mcs[NL80211_VHT_NSS_MAX])
3566 {
3567 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3568 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
3569 u8 i;
3570
3571 if (!sband->vht_cap.vht_supported)
3572 return false;
3573
3574 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
3575
3576 /* Build vht_mcs_mask from VHT capabilities */
3577 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
3578
3579 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3580 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
3581 mcs[i] = txrate->mcs[i];
3582 else
3583 return false;
3584 }
3585
3586 return true;
3587 }
3588
3589 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
3590 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
3591 .len = NL80211_MAX_SUPP_RATES },
3592 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
3593 .len = NL80211_MAX_SUPP_HT_RATES },
3594 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
3595 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
3596 };
3597
3598 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
3599 struct cfg80211_bitrate_mask *mask)
3600 {
3601 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
3602 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3603 int rem, i;
3604 struct nlattr *tx_rates;
3605 struct ieee80211_supported_band *sband;
3606 u16 vht_tx_mcs_map;
3607
3608 memset(mask, 0, sizeof(*mask));
3609 /* Default to all rates enabled */
3610 for (i = 0; i < NUM_NL80211_BANDS; i++) {
3611 sband = rdev->wiphy.bands[i];
3612
3613 if (!sband)
3614 continue;
3615
3616 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
3617 memcpy(mask->control[i].ht_mcs,
3618 sband->ht_cap.mcs.rx_mask,
3619 sizeof(mask->control[i].ht_mcs));
3620
3621 if (!sband->vht_cap.vht_supported)
3622 continue;
3623
3624 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
3625 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
3626 }
3627
3628 /* if no rates are given set it back to the defaults */
3629 if (!info->attrs[NL80211_ATTR_TX_RATES])
3630 goto out;
3631
3632 /* The nested attribute uses enum nl80211_band as the index. This maps
3633 * directly to the enum nl80211_band values used in cfg80211.
3634 */
3635 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
3636 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
3637 enum nl80211_band band = nla_type(tx_rates);
3638 int err;
3639
3640 if (band < 0 || band >= NUM_NL80211_BANDS)
3641 return -EINVAL;
3642 sband = rdev->wiphy.bands[band];
3643 if (sband == NULL)
3644 return -EINVAL;
3645 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates,
3646 nl80211_txattr_policy, info->extack);
3647 if (err)
3648 return err;
3649 if (tb[NL80211_TXRATE_LEGACY]) {
3650 mask->control[band].legacy = rateset_to_mask(
3651 sband,
3652 nla_data(tb[NL80211_TXRATE_LEGACY]),
3653 nla_len(tb[NL80211_TXRATE_LEGACY]));
3654 if ((mask->control[band].legacy == 0) &&
3655 nla_len(tb[NL80211_TXRATE_LEGACY]))
3656 return -EINVAL;
3657 }
3658 if (tb[NL80211_TXRATE_HT]) {
3659 if (!ht_rateset_to_mask(
3660 sband,
3661 nla_data(tb[NL80211_TXRATE_HT]),
3662 nla_len(tb[NL80211_TXRATE_HT]),
3663 mask->control[band].ht_mcs))
3664 return -EINVAL;
3665 }
3666 if (tb[NL80211_TXRATE_VHT]) {
3667 if (!vht_set_mcs_mask(
3668 sband,
3669 nla_data(tb[NL80211_TXRATE_VHT]),
3670 mask->control[band].vht_mcs))
3671 return -EINVAL;
3672 }
3673 if (tb[NL80211_TXRATE_GI]) {
3674 mask->control[band].gi =
3675 nla_get_u8(tb[NL80211_TXRATE_GI]);
3676 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
3677 return -EINVAL;
3678 }
3679
3680 if (mask->control[band].legacy == 0) {
3681 /* don't allow empty legacy rates if HT or VHT
3682 * are not even supported.
3683 */
3684 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
3685 rdev->wiphy.bands[band]->vht_cap.vht_supported))
3686 return -EINVAL;
3687
3688 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
3689 if (mask->control[band].ht_mcs[i])
3690 goto out;
3691
3692 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
3693 if (mask->control[band].vht_mcs[i])
3694 goto out;
3695
3696 /* legacy and mcs rates may not be both empty */
3697 return -EINVAL;
3698 }
3699 }
3700
3701 out:
3702 return 0;
3703 }
3704
3705 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
3706 enum nl80211_band band,
3707 struct cfg80211_bitrate_mask *beacon_rate)
3708 {
3709 u32 count_ht, count_vht, i;
3710 u32 rate = beacon_rate->control[band].legacy;
3711
3712 /* Allow only one rate */
3713 if (hweight32(rate) > 1)
3714 return -EINVAL;
3715
3716 count_ht = 0;
3717 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
3718 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
3719 return -EINVAL;
3720 } else if (beacon_rate->control[band].ht_mcs[i]) {
3721 count_ht++;
3722 if (count_ht > 1)
3723 return -EINVAL;
3724 }
3725 if (count_ht && rate)
3726 return -EINVAL;
3727 }
3728
3729 count_vht = 0;
3730 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
3731 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
3732 return -EINVAL;
3733 } else if (beacon_rate->control[band].vht_mcs[i]) {
3734 count_vht++;
3735 if (count_vht > 1)
3736 return -EINVAL;
3737 }
3738 if (count_vht && rate)
3739 return -EINVAL;
3740 }
3741
3742 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
3743 return -EINVAL;
3744
3745 if (rate &&
3746 !wiphy_ext_feature_isset(&rdev->wiphy,
3747 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
3748 return -EINVAL;
3749 if (count_ht &&
3750 !wiphy_ext_feature_isset(&rdev->wiphy,
3751 NL80211_EXT_FEATURE_BEACON_RATE_HT))
3752 return -EINVAL;
3753 if (count_vht &&
3754 !wiphy_ext_feature_isset(&rdev->wiphy,
3755 NL80211_EXT_FEATURE_BEACON_RATE_VHT))
3756 return -EINVAL;
3757
3758 return 0;
3759 }
3760
3761 static int nl80211_parse_beacon(struct nlattr *attrs[],
3762 struct cfg80211_beacon_data *bcn)
3763 {
3764 bool haveinfo = false;
3765
3766 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3767 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3768 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3769 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3770 return -EINVAL;
3771
3772 memset(bcn, 0, sizeof(*bcn));
3773
3774 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3775 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3776 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3777 if (!bcn->head_len)
3778 return -EINVAL;
3779 haveinfo = true;
3780 }
3781
3782 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3783 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3784 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3785 haveinfo = true;
3786 }
3787
3788 if (!haveinfo)
3789 return -EINVAL;
3790
3791 if (attrs[NL80211_ATTR_IE]) {
3792 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3793 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3794 }
3795
3796 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3797 bcn->proberesp_ies =
3798 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3799 bcn->proberesp_ies_len =
3800 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3801 }
3802
3803 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3804 bcn->assocresp_ies =
3805 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3806 bcn->assocresp_ies_len =
3807 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3808 }
3809
3810 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3811 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3812 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3813 }
3814
3815 return 0;
3816 }
3817
3818 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
3819 const u8 *rates)
3820 {
3821 int i;
3822
3823 if (!rates)
3824 return;
3825
3826 for (i = 0; i < rates[1]; i++) {
3827 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
3828 params->ht_required = true;
3829 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
3830 params->vht_required = true;
3831 }
3832 }
3833
3834 /*
3835 * Since the nl80211 API didn't include, from the beginning, attributes about
3836 * HT/VHT requirements/capabilities, we parse them out of the IEs for the
3837 * benefit of drivers that rebuild IEs in the firmware.
3838 */
3839 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
3840 {
3841 const struct cfg80211_beacon_data *bcn = &params->beacon;
3842 size_t ies_len = bcn->tail_len;
3843 const u8 *ies = bcn->tail;
3844 const u8 *rates;
3845 const u8 *cap;
3846
3847 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
3848 nl80211_check_ap_rate_selectors(params, rates);
3849
3850 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
3851 nl80211_check_ap_rate_selectors(params, rates);
3852
3853 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
3854 if (cap && cap[1] >= sizeof(*params->ht_cap))
3855 params->ht_cap = (void *)(cap + 2);
3856 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
3857 if (cap && cap[1] >= sizeof(*params->vht_cap))
3858 params->vht_cap = (void *)(cap + 2);
3859 }
3860
3861 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3862 struct cfg80211_ap_settings *params)
3863 {
3864 struct wireless_dev *wdev;
3865 bool ret = false;
3866
3867 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3868 if (wdev->iftype != NL80211_IFTYPE_AP &&
3869 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3870 continue;
3871
3872 if (!wdev->preset_chandef.chan)
3873 continue;
3874
3875 params->chandef = wdev->preset_chandef;
3876 ret = true;
3877 break;
3878 }
3879
3880 return ret;
3881 }
3882
3883 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3884 enum nl80211_auth_type auth_type,
3885 enum nl80211_commands cmd)
3886 {
3887 if (auth_type > NL80211_AUTHTYPE_MAX)
3888 return false;
3889
3890 switch (cmd) {
3891 case NL80211_CMD_AUTHENTICATE:
3892 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3893 auth_type == NL80211_AUTHTYPE_SAE)
3894 return false;
3895 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3896 NL80211_EXT_FEATURE_FILS_STA) &&
3897 (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3898 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3899 auth_type == NL80211_AUTHTYPE_FILS_PK))
3900 return false;
3901 return true;
3902 case NL80211_CMD_CONNECT:
3903 /* SAE not supported yet */
3904 if (auth_type == NL80211_AUTHTYPE_SAE)
3905 return false;
3906 /* FILS with SK PFS or PK not supported yet */
3907 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3908 auth_type == NL80211_AUTHTYPE_FILS_PK)
3909 return false;
3910 if (!wiphy_ext_feature_isset(
3911 &rdev->wiphy,
3912 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
3913 auth_type == NL80211_AUTHTYPE_FILS_SK)
3914 return false;
3915 return true;
3916 case NL80211_CMD_START_AP:
3917 /* SAE not supported yet */
3918 if (auth_type == NL80211_AUTHTYPE_SAE)
3919 return false;
3920 /* FILS not supported yet */
3921 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
3922 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
3923 auth_type == NL80211_AUTHTYPE_FILS_PK)
3924 return false;
3925 return true;
3926 default:
3927 return false;
3928 }
3929 }
3930
3931 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3932 {
3933 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3934 struct net_device *dev = info->user_ptr[1];
3935 struct wireless_dev *wdev = dev->ieee80211_ptr;
3936 struct cfg80211_ap_settings params;
3937 int err;
3938
3939 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3940 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3941 return -EOPNOTSUPP;
3942
3943 if (!rdev->ops->start_ap)
3944 return -EOPNOTSUPP;
3945
3946 if (wdev->beacon_interval)
3947 return -EALREADY;
3948
3949 memset(&params, 0, sizeof(params));
3950
3951 /* these are required for START_AP */
3952 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3953 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3954 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3955 return -EINVAL;
3956
3957 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3958 if (err)
3959 return err;
3960
3961 params.beacon_interval =
3962 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3963 params.dtim_period =
3964 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3965
3966 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
3967 params.beacon_interval);
3968 if (err)
3969 return err;
3970
3971 /*
3972 * In theory, some of these attributes should be required here
3973 * but since they were not used when the command was originally
3974 * added, keep them optional for old user space programs to let
3975 * them continue to work with drivers that do not need the
3976 * additional information -- drivers must check!
3977 */
3978 if (info->attrs[NL80211_ATTR_SSID]) {
3979 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3980 params.ssid_len =
3981 nla_len(info->attrs[NL80211_ATTR_SSID]);
3982 if (params.ssid_len == 0 ||
3983 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3984 return -EINVAL;
3985 }
3986
3987 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3988 params.hidden_ssid = nla_get_u32(
3989 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3990 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3991 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3992 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3993 return -EINVAL;
3994 }
3995
3996 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3997
3998 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3999 params.auth_type = nla_get_u32(
4000 info->attrs[NL80211_ATTR_AUTH_TYPE]);
4001 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4002 NL80211_CMD_START_AP))
4003 return -EINVAL;
4004 } else
4005 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4006
4007 err = nl80211_crypto_settings(rdev, info, &params.crypto,
4008 NL80211_MAX_NR_CIPHER_SUITES);
4009 if (err)
4010 return err;
4011
4012 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4013 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4014 return -EOPNOTSUPP;
4015 params.inactivity_timeout = nla_get_u16(
4016 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4017 }
4018
4019 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4020 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4021 return -EINVAL;
4022 params.p2p_ctwindow =
4023 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4024 if (params.p2p_ctwindow > 127)
4025 return -EINVAL;
4026 if (params.p2p_ctwindow != 0 &&
4027 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4028 return -EINVAL;
4029 }
4030
4031 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4032 u8 tmp;
4033
4034 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4035 return -EINVAL;
4036 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4037 if (tmp > 1)
4038 return -EINVAL;
4039 params.p2p_opp_ps = tmp;
4040 if (params.p2p_opp_ps != 0 &&
4041 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4042 return -EINVAL;
4043 }
4044
4045 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4046 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4047 if (err)
4048 return err;
4049 } else if (wdev->preset_chandef.chan) {
4050 params.chandef = wdev->preset_chandef;
4051 } else if (!nl80211_get_ap_channel(rdev, &params))
4052 return -EINVAL;
4053
4054 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4055 wdev->iftype))
4056 return -EINVAL;
4057
4058 if (info->attrs[NL80211_ATTR_TX_RATES]) {
4059 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4060 if (err)
4061 return err;
4062
4063 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4064 &params.beacon_rate);
4065 if (err)
4066 return err;
4067 }
4068
4069 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4070 params.smps_mode =
4071 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4072 switch (params.smps_mode) {
4073 case NL80211_SMPS_OFF:
4074 break;
4075 case NL80211_SMPS_STATIC:
4076 if (!(rdev->wiphy.features &
4077 NL80211_FEATURE_STATIC_SMPS))
4078 return -EINVAL;
4079 break;
4080 case NL80211_SMPS_DYNAMIC:
4081 if (!(rdev->wiphy.features &
4082 NL80211_FEATURE_DYNAMIC_SMPS))
4083 return -EINVAL;
4084 break;
4085 default:
4086 return -EINVAL;
4087 }
4088 } else {
4089 params.smps_mode = NL80211_SMPS_OFF;
4090 }
4091
4092 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4093 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4094 return -EOPNOTSUPP;
4095
4096 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4097 params.acl = parse_acl_data(&rdev->wiphy, info);
4098 if (IS_ERR(params.acl))
4099 return PTR_ERR(params.acl);
4100 }
4101
4102 nl80211_calculate_ap_params(&params);
4103
4104 wdev_lock(wdev);
4105 err = rdev_start_ap(rdev, dev, &params);
4106 if (!err) {
4107 wdev->preset_chandef = params.chandef;
4108 wdev->beacon_interval = params.beacon_interval;
4109 wdev->chandef = params.chandef;
4110 wdev->ssid_len = params.ssid_len;
4111 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4112 }
4113 wdev_unlock(wdev);
4114
4115 kfree(params.acl);
4116
4117 return err;
4118 }
4119
4120 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4121 {
4122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4123 struct net_device *dev = info->user_ptr[1];
4124 struct wireless_dev *wdev = dev->ieee80211_ptr;
4125 struct cfg80211_beacon_data params;
4126 int err;
4127
4128 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4129 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4130 return -EOPNOTSUPP;
4131
4132 if (!rdev->ops->change_beacon)
4133 return -EOPNOTSUPP;
4134
4135 if (!wdev->beacon_interval)
4136 return -EINVAL;
4137
4138 err = nl80211_parse_beacon(info->attrs, &params);
4139 if (err)
4140 return err;
4141
4142 wdev_lock(wdev);
4143 err = rdev_change_beacon(rdev, dev, &params);
4144 wdev_unlock(wdev);
4145
4146 return err;
4147 }
4148
4149 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4150 {
4151 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4152 struct net_device *dev = info->user_ptr[1];
4153
4154 return cfg80211_stop_ap(rdev, dev, false);
4155 }
4156
4157 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4158 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4159 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4160 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4161 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4162 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4163 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4164 };
4165
4166 static int parse_station_flags(struct genl_info *info,
4167 enum nl80211_iftype iftype,
4168 struct station_parameters *params)
4169 {
4170 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4171 struct nlattr *nla;
4172 int flag;
4173
4174 /*
4175 * Try parsing the new attribute first so userspace
4176 * can specify both for older kernels.
4177 */
4178 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4179 if (nla) {
4180 struct nl80211_sta_flag_update *sta_flags;
4181
4182 sta_flags = nla_data(nla);
4183 params->sta_flags_mask = sta_flags->mask;
4184 params->sta_flags_set = sta_flags->set;
4185 params->sta_flags_set &= params->sta_flags_mask;
4186 if ((params->sta_flags_mask |
4187 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4188 return -EINVAL;
4189 return 0;
4190 }
4191
4192 /* if present, parse the old attribute */
4193
4194 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4195 if (!nla)
4196 return 0;
4197
4198 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla,
4199 sta_flags_policy, info->extack))
4200 return -EINVAL;
4201
4202 /*
4203 * Only allow certain flags for interface types so that
4204 * other attributes are silently ignored. Remember that
4205 * this is backward compatibility code with old userspace
4206 * and shouldn't be hit in other cases anyway.
4207 */
4208 switch (iftype) {
4209 case NL80211_IFTYPE_AP:
4210 case NL80211_IFTYPE_AP_VLAN:
4211 case NL80211_IFTYPE_P2P_GO:
4212 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4213 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4214 BIT(NL80211_STA_FLAG_WME) |
4215 BIT(NL80211_STA_FLAG_MFP);
4216 break;
4217 case NL80211_IFTYPE_P2P_CLIENT:
4218 case NL80211_IFTYPE_STATION:
4219 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4220 BIT(NL80211_STA_FLAG_TDLS_PEER);
4221 break;
4222 case NL80211_IFTYPE_MESH_POINT:
4223 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4224 BIT(NL80211_STA_FLAG_MFP) |
4225 BIT(NL80211_STA_FLAG_AUTHORIZED);
4226 break;
4227 default:
4228 return -EINVAL;
4229 }
4230
4231 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4232 if (flags[flag]) {
4233 params->sta_flags_set |= (1<<flag);
4234
4235 /* no longer support new API additions in old API */
4236 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4237 return -EINVAL;
4238 }
4239 }
4240
4241 return 0;
4242 }
4243
4244 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
4245 int attr)
4246 {
4247 struct nlattr *rate;
4248 u32 bitrate;
4249 u16 bitrate_compat;
4250 enum nl80211_rate_info rate_flg;
4251
4252 rate = nla_nest_start(msg, attr);
4253 if (!rate)
4254 return false;
4255
4256 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4257 bitrate = cfg80211_calculate_bitrate(info);
4258 /* report 16-bit bitrate only if we can */
4259 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4260 if (bitrate > 0 &&
4261 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4262 return false;
4263 if (bitrate_compat > 0 &&
4264 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4265 return false;
4266
4267 switch (info->bw) {
4268 case RATE_INFO_BW_5:
4269 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4270 break;
4271 case RATE_INFO_BW_10:
4272 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4273 break;
4274 default:
4275 WARN_ON(1);
4276 /* fall through */
4277 case RATE_INFO_BW_20:
4278 rate_flg = 0;
4279 break;
4280 case RATE_INFO_BW_40:
4281 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4282 break;
4283 case RATE_INFO_BW_80:
4284 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4285 break;
4286 case RATE_INFO_BW_160:
4287 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4288 break;
4289 }
4290
4291 if (rate_flg && nla_put_flag(msg, rate_flg))
4292 return false;
4293
4294 if (info->flags & RATE_INFO_FLAGS_MCS) {
4295 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
4296 return false;
4297 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4298 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4299 return false;
4300 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
4301 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
4302 return false;
4303 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
4304 return false;
4305 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
4306 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
4307 return false;
4308 }
4309
4310 nla_nest_end(msg, rate);
4311 return true;
4312 }
4313
4314 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
4315 int id)
4316 {
4317 void *attr;
4318 int i = 0;
4319
4320 if (!mask)
4321 return true;
4322
4323 attr = nla_nest_start(msg, id);
4324 if (!attr)
4325 return false;
4326
4327 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
4328 if (!(mask & BIT(i)))
4329 continue;
4330
4331 if (nla_put_u8(msg, i, signal[i]))
4332 return false;
4333 }
4334
4335 nla_nest_end(msg, attr);
4336
4337 return true;
4338 }
4339
4340 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
4341 u32 seq, int flags,
4342 struct cfg80211_registered_device *rdev,
4343 struct net_device *dev,
4344 const u8 *mac_addr, struct station_info *sinfo)
4345 {
4346 void *hdr;
4347 struct nlattr *sinfoattr, *bss_param;
4348
4349 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
4350 if (!hdr)
4351 return -1;
4352
4353 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4354 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
4355 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
4356 goto nla_put_failure;
4357
4358 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
4359 if (!sinfoattr)
4360 goto nla_put_failure;
4361
4362 #define PUT_SINFO(attr, memb, type) do { \
4363 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
4364 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4365 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
4366 sinfo->memb)) \
4367 goto nla_put_failure; \
4368 } while (0)
4369 #define PUT_SINFO_U64(attr, memb) do { \
4370 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
4371 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
4372 sinfo->memb, NL80211_STA_INFO_PAD)) \
4373 goto nla_put_failure; \
4374 } while (0)
4375
4376 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
4377 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
4378
4379 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
4380 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
4381 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
4382 (u32)sinfo->rx_bytes))
4383 goto nla_put_failure;
4384
4385 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
4386 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
4387 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
4388 (u32)sinfo->tx_bytes))
4389 goto nla_put_failure;
4390
4391 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
4392 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
4393 PUT_SINFO(LLID, llid, u16);
4394 PUT_SINFO(PLID, plid, u16);
4395 PUT_SINFO(PLINK_STATE, plink_state, u8);
4396 PUT_SINFO_U64(RX_DURATION, rx_duration);
4397
4398 switch (rdev->wiphy.signal_type) {
4399 case CFG80211_SIGNAL_TYPE_MBM:
4400 PUT_SINFO(SIGNAL, signal, u8);
4401 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
4402 break;
4403 default:
4404 break;
4405 }
4406 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
4407 if (!nl80211_put_signal(msg, sinfo->chains,
4408 sinfo->chain_signal,
4409 NL80211_STA_INFO_CHAIN_SIGNAL))
4410 goto nla_put_failure;
4411 }
4412 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
4413 if (!nl80211_put_signal(msg, sinfo->chains,
4414 sinfo->chain_signal_avg,
4415 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
4416 goto nla_put_failure;
4417 }
4418 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
4419 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
4420 NL80211_STA_INFO_TX_BITRATE))
4421 goto nla_put_failure;
4422 }
4423 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
4424 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
4425 NL80211_STA_INFO_RX_BITRATE))
4426 goto nla_put_failure;
4427 }
4428
4429 PUT_SINFO(RX_PACKETS, rx_packets, u32);
4430 PUT_SINFO(TX_PACKETS, tx_packets, u32);
4431 PUT_SINFO(TX_RETRIES, tx_retries, u32);
4432 PUT_SINFO(TX_FAILED, tx_failed, u32);
4433 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
4434 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
4435 PUT_SINFO(LOCAL_PM, local_pm, u32);
4436 PUT_SINFO(PEER_PM, peer_pm, u32);
4437 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
4438
4439 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
4440 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
4441 if (!bss_param)
4442 goto nla_put_failure;
4443
4444 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
4445 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
4446 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
4447 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
4448 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
4449 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
4450 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
4451 sinfo->bss_param.dtim_period) ||
4452 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
4453 sinfo->bss_param.beacon_interval))
4454 goto nla_put_failure;
4455
4456 nla_nest_end(msg, bss_param);
4457 }
4458 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
4459 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
4460 sizeof(struct nl80211_sta_flag_update),
4461 &sinfo->sta_flags))
4462 goto nla_put_failure;
4463
4464 PUT_SINFO_U64(T_OFFSET, t_offset);
4465 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
4466 PUT_SINFO_U64(BEACON_RX, rx_beacon);
4467 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
4468
4469 #undef PUT_SINFO
4470 #undef PUT_SINFO_U64
4471
4472 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
4473 struct nlattr *tidsattr;
4474 int tid;
4475
4476 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
4477 if (!tidsattr)
4478 goto nla_put_failure;
4479
4480 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
4481 struct cfg80211_tid_stats *tidstats;
4482 struct nlattr *tidattr;
4483
4484 tidstats = &sinfo->pertid[tid];
4485
4486 if (!tidstats->filled)
4487 continue;
4488
4489 tidattr = nla_nest_start(msg, tid + 1);
4490 if (!tidattr)
4491 goto nla_put_failure;
4492
4493 #define PUT_TIDVAL_U64(attr, memb) do { \
4494 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
4495 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
4496 tidstats->memb, NL80211_TID_STATS_PAD)) \
4497 goto nla_put_failure; \
4498 } while (0)
4499
4500 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
4501 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
4502 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
4503 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
4504
4505 #undef PUT_TIDVAL_U64
4506 nla_nest_end(msg, tidattr);
4507 }
4508
4509 nla_nest_end(msg, tidsattr);
4510 }
4511
4512 nla_nest_end(msg, sinfoattr);
4513
4514 if (sinfo->assoc_req_ies_len &&
4515 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
4516 sinfo->assoc_req_ies))
4517 goto nla_put_failure;
4518
4519 genlmsg_end(msg, hdr);
4520 return 0;
4521
4522 nla_put_failure:
4523 genlmsg_cancel(msg, hdr);
4524 return -EMSGSIZE;
4525 }
4526
4527 static int nl80211_dump_station(struct sk_buff *skb,
4528 struct netlink_callback *cb)
4529 {
4530 struct station_info sinfo;
4531 struct cfg80211_registered_device *rdev;
4532 struct wireless_dev *wdev;
4533 u8 mac_addr[ETH_ALEN];
4534 int sta_idx = cb->args[2];
4535 int err;
4536
4537 rtnl_lock();
4538 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4539 if (err)
4540 goto out_err;
4541
4542 if (!wdev->netdev) {
4543 err = -EINVAL;
4544 goto out_err;
4545 }
4546
4547 if (!rdev->ops->dump_station) {
4548 err = -EOPNOTSUPP;
4549 goto out_err;
4550 }
4551
4552 while (1) {
4553 memset(&sinfo, 0, sizeof(sinfo));
4554 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4555 mac_addr, &sinfo);
4556 if (err == -ENOENT)
4557 break;
4558 if (err)
4559 goto out_err;
4560
4561 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4562 NETLINK_CB(cb->skb).portid,
4563 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4564 rdev, wdev->netdev, mac_addr,
4565 &sinfo) < 0)
4566 goto out;
4567
4568 sta_idx++;
4569 }
4570
4571 out:
4572 cb->args[2] = sta_idx;
4573 err = skb->len;
4574 out_err:
4575 rtnl_unlock();
4576
4577 return err;
4578 }
4579
4580 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4581 {
4582 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4583 struct net_device *dev = info->user_ptr[1];
4584 struct station_info sinfo;
4585 struct sk_buff *msg;
4586 u8 *mac_addr = NULL;
4587 int err;
4588
4589 memset(&sinfo, 0, sizeof(sinfo));
4590
4591 if (!info->attrs[NL80211_ATTR_MAC])
4592 return -EINVAL;
4593
4594 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4595
4596 if (!rdev->ops->get_station)
4597 return -EOPNOTSUPP;
4598
4599 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4600 if (err)
4601 return err;
4602
4603 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4604 if (!msg)
4605 return -ENOMEM;
4606
4607 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4608 info->snd_portid, info->snd_seq, 0,
4609 rdev, dev, mac_addr, &sinfo) < 0) {
4610 nlmsg_free(msg);
4611 return -ENOBUFS;
4612 }
4613
4614 return genlmsg_reply(msg, info);
4615 }
4616
4617 int cfg80211_check_station_change(struct wiphy *wiphy,
4618 struct station_parameters *params,
4619 enum cfg80211_station_type statype)
4620 {
4621 if (params->listen_interval != -1 &&
4622 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4623 return -EINVAL;
4624
4625 if (params->support_p2p_ps != -1 &&
4626 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4627 return -EINVAL;
4628
4629 if (params->aid &&
4630 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4631 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4632 return -EINVAL;
4633
4634 /* When you run into this, adjust the code below for the new flag */
4635 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4636
4637 switch (statype) {
4638 case CFG80211_STA_MESH_PEER_KERNEL:
4639 case CFG80211_STA_MESH_PEER_USER:
4640 /*
4641 * No ignoring the TDLS flag here -- the userspace mesh
4642 * code doesn't have the bug of including TDLS in the
4643 * mask everywhere.
4644 */
4645 if (params->sta_flags_mask &
4646 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4647 BIT(NL80211_STA_FLAG_MFP) |
4648 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4649 return -EINVAL;
4650 break;
4651 case CFG80211_STA_TDLS_PEER_SETUP:
4652 case CFG80211_STA_TDLS_PEER_ACTIVE:
4653 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4654 return -EINVAL;
4655 /* ignore since it can't change */
4656 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4657 break;
4658 default:
4659 /* disallow mesh-specific things */
4660 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4661 return -EINVAL;
4662 if (params->local_pm)
4663 return -EINVAL;
4664 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4665 return -EINVAL;
4666 }
4667
4668 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4669 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4670 /* TDLS can't be set, ... */
4671 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4672 return -EINVAL;
4673 /*
4674 * ... but don't bother the driver with it. This works around
4675 * a hostapd/wpa_supplicant issue -- it always includes the
4676 * TLDS_PEER flag in the mask even for AP mode.
4677 */
4678 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4679 }
4680
4681 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4682 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4683 /* reject other things that can't change */
4684 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4685 return -EINVAL;
4686 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4687 return -EINVAL;
4688 if (params->supported_rates)
4689 return -EINVAL;
4690 if (params->ext_capab || params->ht_capa || params->vht_capa)
4691 return -EINVAL;
4692 }
4693
4694 if (statype != CFG80211_STA_AP_CLIENT &&
4695 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4696 if (params->vlan)
4697 return -EINVAL;
4698 }
4699
4700 switch (statype) {
4701 case CFG80211_STA_AP_MLME_CLIENT:
4702 /* Use this only for authorizing/unauthorizing a station */
4703 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4704 return -EOPNOTSUPP;
4705 break;
4706 case CFG80211_STA_AP_CLIENT:
4707 case CFG80211_STA_AP_CLIENT_UNASSOC:
4708 /* accept only the listed bits */
4709 if (params->sta_flags_mask &
4710 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4711 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4712 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4713 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4714 BIT(NL80211_STA_FLAG_WME) |
4715 BIT(NL80211_STA_FLAG_MFP)))
4716 return -EINVAL;
4717
4718 /* but authenticated/associated only if driver handles it */
4719 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4720 params->sta_flags_mask &
4721 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4722 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4723 return -EINVAL;
4724 break;
4725 case CFG80211_STA_IBSS:
4726 case CFG80211_STA_AP_STA:
4727 /* reject any changes other than AUTHORIZED */
4728 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4729 return -EINVAL;
4730 break;
4731 case CFG80211_STA_TDLS_PEER_SETUP:
4732 /* reject any changes other than AUTHORIZED or WME */
4733 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4734 BIT(NL80211_STA_FLAG_WME)))
4735 return -EINVAL;
4736 /* force (at least) rates when authorizing */
4737 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4738 !params->supported_rates)
4739 return -EINVAL;
4740 break;
4741 case CFG80211_STA_TDLS_PEER_ACTIVE:
4742 /* reject any changes */
4743 return -EINVAL;
4744 case CFG80211_STA_MESH_PEER_KERNEL:
4745 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4746 return -EINVAL;
4747 break;
4748 case CFG80211_STA_MESH_PEER_USER:
4749 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4750 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4751 return -EINVAL;
4752 break;
4753 }
4754
4755 /*
4756 * Older kernel versions ignored this attribute entirely, so don't
4757 * reject attempts to update it but mark it as unused instead so the
4758 * driver won't look at the data.
4759 */
4760 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
4761 statype != CFG80211_STA_TDLS_PEER_SETUP)
4762 params->opmode_notif_used = false;
4763
4764 return 0;
4765 }
4766 EXPORT_SYMBOL(cfg80211_check_station_change);
4767
4768 /*
4769 * Get vlan interface making sure it is running and on the right wiphy.
4770 */
4771 static struct net_device *get_vlan(struct genl_info *info,
4772 struct cfg80211_registered_device *rdev)
4773 {
4774 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4775 struct net_device *v;
4776 int ret;
4777
4778 if (!vlanattr)
4779 return NULL;
4780
4781 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4782 if (!v)
4783 return ERR_PTR(-ENODEV);
4784
4785 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4786 ret = -EINVAL;
4787 goto error;
4788 }
4789
4790 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4791 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4792 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4793 ret = -EINVAL;
4794 goto error;
4795 }
4796
4797 if (!netif_running(v)) {
4798 ret = -ENETDOWN;
4799 goto error;
4800 }
4801
4802 return v;
4803 error:
4804 dev_put(v);
4805 return ERR_PTR(ret);
4806 }
4807
4808 static const struct nla_policy
4809 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4810 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4811 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4812 };
4813
4814 static int nl80211_parse_sta_wme(struct genl_info *info,
4815 struct station_parameters *params)
4816 {
4817 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4818 struct nlattr *nla;
4819 int err;
4820
4821 /* parse WME attributes if present */
4822 if (!info->attrs[NL80211_ATTR_STA_WME])
4823 return 0;
4824
4825 nla = info->attrs[NL80211_ATTR_STA_WME];
4826 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4827 nl80211_sta_wme_policy, info->extack);
4828 if (err)
4829 return err;
4830
4831 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4832 params->uapsd_queues = nla_get_u8(
4833 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4834 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4835 return -EINVAL;
4836
4837 if (tb[NL80211_STA_WME_MAX_SP])
4838 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4839
4840 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4841 return -EINVAL;
4842
4843 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4844
4845 return 0;
4846 }
4847
4848 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4849 struct station_parameters *params)
4850 {
4851 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4852 params->supported_channels =
4853 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4854 params->supported_channels_len =
4855 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4856 /*
4857 * Need to include at least one (first channel, number of
4858 * channels) tuple for each subband, and must have proper
4859 * tuples for the rest of the data as well.
4860 */
4861 if (params->supported_channels_len < 2)
4862 return -EINVAL;
4863 if (params->supported_channels_len % 2)
4864 return -EINVAL;
4865 }
4866
4867 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4868 params->supported_oper_classes =
4869 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4870 params->supported_oper_classes_len =
4871 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4872 /*
4873 * The value of the Length field of the Supported Operating
4874 * Classes element is between 2 and 253.
4875 */
4876 if (params->supported_oper_classes_len < 2 ||
4877 params->supported_oper_classes_len > 253)
4878 return -EINVAL;
4879 }
4880 return 0;
4881 }
4882
4883 static int nl80211_set_station_tdls(struct genl_info *info,
4884 struct station_parameters *params)
4885 {
4886 int err;
4887 /* Dummy STA entry gets updated once the peer capabilities are known */
4888 if (info->attrs[NL80211_ATTR_PEER_AID])
4889 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4890 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4891 params->ht_capa =
4892 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4893 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4894 params->vht_capa =
4895 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4896
4897 err = nl80211_parse_sta_channel_info(info, params);
4898 if (err)
4899 return err;
4900
4901 return nl80211_parse_sta_wme(info, params);
4902 }
4903
4904 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4905 {
4906 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4907 struct net_device *dev = info->user_ptr[1];
4908 struct station_parameters params;
4909 u8 *mac_addr;
4910 int err;
4911
4912 memset(&params, 0, sizeof(params));
4913
4914 if (!rdev->ops->change_station)
4915 return -EOPNOTSUPP;
4916
4917 /*
4918 * AID and listen_interval properties can be set only for unassociated
4919 * station. Include these parameters here and will check them in
4920 * cfg80211_check_station_change().
4921 */
4922 if (info->attrs[NL80211_ATTR_STA_AID])
4923 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4924
4925 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4926 params.listen_interval =
4927 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4928 else
4929 params.listen_interval = -1;
4930
4931 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4932 u8 tmp;
4933
4934 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4935 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4936 return -EINVAL;
4937
4938 params.support_p2p_ps = tmp;
4939 } else {
4940 params.support_p2p_ps = -1;
4941 }
4942
4943 if (!info->attrs[NL80211_ATTR_MAC])
4944 return -EINVAL;
4945
4946 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4947
4948 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4949 params.supported_rates =
4950 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4951 params.supported_rates_len =
4952 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4953 }
4954
4955 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4956 params.capability =
4957 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4958 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4959 }
4960
4961 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4962 params.ext_capab =
4963 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4964 params.ext_capab_len =
4965 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4966 }
4967
4968 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4969 return -EINVAL;
4970
4971 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4972 params.plink_action =
4973 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4974 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4975 return -EINVAL;
4976 }
4977
4978 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4979 params.plink_state =
4980 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4981 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4982 return -EINVAL;
4983 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4984 params.peer_aid = nla_get_u16(
4985 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4986 if (params.peer_aid > IEEE80211_MAX_AID)
4987 return -EINVAL;
4988 }
4989 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4990 }
4991
4992 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4993 enum nl80211_mesh_power_mode pm = nla_get_u32(
4994 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4995
4996 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4997 pm > NL80211_MESH_POWER_MAX)
4998 return -EINVAL;
4999
5000 params.local_pm = pm;
5001 }
5002
5003 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5004 params.opmode_notif_used = true;
5005 params.opmode_notif =
5006 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5007 }
5008
5009 /* Include parameters for TDLS peer (will check later) */
5010 err = nl80211_set_station_tdls(info, &params);
5011 if (err)
5012 return err;
5013
5014 params.vlan = get_vlan(info, rdev);
5015 if (IS_ERR(params.vlan))
5016 return PTR_ERR(params.vlan);
5017
5018 switch (dev->ieee80211_ptr->iftype) {
5019 case NL80211_IFTYPE_AP:
5020 case NL80211_IFTYPE_AP_VLAN:
5021 case NL80211_IFTYPE_P2P_GO:
5022 case NL80211_IFTYPE_P2P_CLIENT:
5023 case NL80211_IFTYPE_STATION:
5024 case NL80211_IFTYPE_ADHOC:
5025 case NL80211_IFTYPE_MESH_POINT:
5026 break;
5027 default:
5028 err = -EOPNOTSUPP;
5029 goto out_put_vlan;
5030 }
5031
5032 /* driver will call cfg80211_check_station_change() */
5033 err = rdev_change_station(rdev, dev, mac_addr, &params);
5034
5035 out_put_vlan:
5036 if (params.vlan)
5037 dev_put(params.vlan);
5038
5039 return err;
5040 }
5041
5042 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5043 {
5044 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5045 int err;
5046 struct net_device *dev = info->user_ptr[1];
5047 struct station_parameters params;
5048 u8 *mac_addr = NULL;
5049 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5050 BIT(NL80211_STA_FLAG_ASSOCIATED);
5051
5052 memset(&params, 0, sizeof(params));
5053
5054 if (!rdev->ops->add_station)
5055 return -EOPNOTSUPP;
5056
5057 if (!info->attrs[NL80211_ATTR_MAC])
5058 return -EINVAL;
5059
5060 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5061 return -EINVAL;
5062
5063 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5064 return -EINVAL;
5065
5066 if (!info->attrs[NL80211_ATTR_STA_AID] &&
5067 !info->attrs[NL80211_ATTR_PEER_AID])
5068 return -EINVAL;
5069
5070 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5071 params.supported_rates =
5072 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5073 params.supported_rates_len =
5074 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5075 params.listen_interval =
5076 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5077
5078 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5079 u8 tmp;
5080
5081 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5082 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
5083 return -EINVAL;
5084
5085 params.support_p2p_ps = tmp;
5086 } else {
5087 /*
5088 * if not specified, assume it's supported for P2P GO interface,
5089 * and is NOT supported for AP interface
5090 */
5091 params.support_p2p_ps =
5092 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5093 }
5094
5095 if (info->attrs[NL80211_ATTR_PEER_AID])
5096 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5097 else
5098 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5099 if (!params.aid || params.aid > IEEE80211_MAX_AID)
5100 return -EINVAL;
5101
5102 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5103 params.capability =
5104 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5105 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5106 }
5107
5108 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5109 params.ext_capab =
5110 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5111 params.ext_capab_len =
5112 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5113 }
5114
5115 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5116 params.ht_capa =
5117 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5118
5119 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5120 params.vht_capa =
5121 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5122
5123 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5124 params.opmode_notif_used = true;
5125 params.opmode_notif =
5126 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5127 }
5128
5129 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
5130 params.plink_action =
5131 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5132 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
5133 return -EINVAL;
5134 }
5135
5136 err = nl80211_parse_sta_channel_info(info, &params);
5137 if (err)
5138 return err;
5139
5140 err = nl80211_parse_sta_wme(info, &params);
5141 if (err)
5142 return err;
5143
5144 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5145 return -EINVAL;
5146
5147 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5148 * as userspace might just pass through the capabilities from the IEs
5149 * directly, rather than enforcing this restriction and returning an
5150 * error in this case.
5151 */
5152 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5153 params.ht_capa = NULL;
5154 params.vht_capa = NULL;
5155 }
5156
5157 /* When you run into this, adjust the code below for the new flag */
5158 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5159
5160 switch (dev->ieee80211_ptr->iftype) {
5161 case NL80211_IFTYPE_AP:
5162 case NL80211_IFTYPE_AP_VLAN:
5163 case NL80211_IFTYPE_P2P_GO:
5164 /* ignore WME attributes if iface/sta is not capable */
5165 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5166 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5167 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5168
5169 /* TDLS peers cannot be added */
5170 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5171 info->attrs[NL80211_ATTR_PEER_AID])
5172 return -EINVAL;
5173 /* but don't bother the driver with it */
5174 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5175
5176 /* allow authenticated/associated only if driver handles it */
5177 if (!(rdev->wiphy.features &
5178 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5179 params.sta_flags_mask & auth_assoc)
5180 return -EINVAL;
5181
5182 /* Older userspace, or userspace wanting to be compatible with
5183 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5184 * and assoc flags in the mask, but assumes the station will be
5185 * added as associated anyway since this was the required driver
5186 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5187 * introduced.
5188 * In order to not bother drivers with this quirk in the API
5189 * set the flags in both the mask and set for new stations in
5190 * this case.
5191 */
5192 if (!(params.sta_flags_mask & auth_assoc)) {
5193 params.sta_flags_mask |= auth_assoc;
5194 params.sta_flags_set |= auth_assoc;
5195 }
5196
5197 /* must be last in here for error handling */
5198 params.vlan = get_vlan(info, rdev);
5199 if (IS_ERR(params.vlan))
5200 return PTR_ERR(params.vlan);
5201 break;
5202 case NL80211_IFTYPE_MESH_POINT:
5203 /* ignore uAPSD data */
5204 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5205
5206 /* associated is disallowed */
5207 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
5208 return -EINVAL;
5209 /* TDLS peers cannot be added */
5210 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5211 info->attrs[NL80211_ATTR_PEER_AID])
5212 return -EINVAL;
5213 break;
5214 case NL80211_IFTYPE_STATION:
5215 case NL80211_IFTYPE_P2P_CLIENT:
5216 /* ignore uAPSD data */
5217 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5218
5219 /* these are disallowed */
5220 if (params.sta_flags_mask &
5221 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
5222 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
5223 return -EINVAL;
5224 /* Only TDLS peers can be added */
5225 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5226 return -EINVAL;
5227 /* Can only add if TDLS ... */
5228 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
5229 return -EOPNOTSUPP;
5230 /* ... with external setup is supported */
5231 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
5232 return -EOPNOTSUPP;
5233 /*
5234 * Older wpa_supplicant versions always mark the TDLS peer
5235 * as authorized, but it shouldn't yet be.
5236 */
5237 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
5238 break;
5239 default:
5240 return -EOPNOTSUPP;
5241 }
5242
5243 /* be aware of params.vlan when changing code here */
5244
5245 err = rdev_add_station(rdev, dev, mac_addr, &params);
5246
5247 if (params.vlan)
5248 dev_put(params.vlan);
5249 return err;
5250 }
5251
5252 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
5253 {
5254 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5255 struct net_device *dev = info->user_ptr[1];
5256 struct station_del_parameters params;
5257
5258 memset(&params, 0, sizeof(params));
5259
5260 if (info->attrs[NL80211_ATTR_MAC])
5261 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
5262
5263 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5265 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
5266 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5267 return -EINVAL;
5268
5269 if (!rdev->ops->del_station)
5270 return -EOPNOTSUPP;
5271
5272 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
5273 params.subtype =
5274 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
5275 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
5276 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
5277 return -EINVAL;
5278 } else {
5279 /* Default to Deauthentication frame */
5280 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
5281 }
5282
5283 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
5284 params.reason_code =
5285 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5286 if (params.reason_code == 0)
5287 return -EINVAL; /* 0 is reserved */
5288 } else {
5289 /* Default to reason code 2 */
5290 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
5291 }
5292
5293 return rdev_del_station(rdev, dev, &params);
5294 }
5295
5296 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
5297 int flags, struct net_device *dev,
5298 u8 *dst, u8 *next_hop,
5299 struct mpath_info *pinfo)
5300 {
5301 void *hdr;
5302 struct nlattr *pinfoattr;
5303
5304 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
5305 if (!hdr)
5306 return -1;
5307
5308 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5309 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
5310 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
5311 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
5312 goto nla_put_failure;
5313
5314 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
5315 if (!pinfoattr)
5316 goto nla_put_failure;
5317 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
5318 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
5319 pinfo->frame_qlen))
5320 goto nla_put_failure;
5321 if (((pinfo->filled & MPATH_INFO_SN) &&
5322 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
5323 ((pinfo->filled & MPATH_INFO_METRIC) &&
5324 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
5325 pinfo->metric)) ||
5326 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
5327 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
5328 pinfo->exptime)) ||
5329 ((pinfo->filled & MPATH_INFO_FLAGS) &&
5330 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
5331 pinfo->flags)) ||
5332 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
5333 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
5334 pinfo->discovery_timeout)) ||
5335 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
5336 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
5337 pinfo->discovery_retries)))
5338 goto nla_put_failure;
5339
5340 nla_nest_end(msg, pinfoattr);
5341
5342 genlmsg_end(msg, hdr);
5343 return 0;
5344
5345 nla_put_failure:
5346 genlmsg_cancel(msg, hdr);
5347 return -EMSGSIZE;
5348 }
5349
5350 static int nl80211_dump_mpath(struct sk_buff *skb,
5351 struct netlink_callback *cb)
5352 {
5353 struct mpath_info pinfo;
5354 struct cfg80211_registered_device *rdev;
5355 struct wireless_dev *wdev;
5356 u8 dst[ETH_ALEN];
5357 u8 next_hop[ETH_ALEN];
5358 int path_idx = cb->args[2];
5359 int err;
5360
5361 rtnl_lock();
5362 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5363 if (err)
5364 goto out_err;
5365
5366 if (!rdev->ops->dump_mpath) {
5367 err = -EOPNOTSUPP;
5368 goto out_err;
5369 }
5370
5371 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5372 err = -EOPNOTSUPP;
5373 goto out_err;
5374 }
5375
5376 while (1) {
5377 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
5378 next_hop, &pinfo);
5379 if (err == -ENOENT)
5380 break;
5381 if (err)
5382 goto out_err;
5383
5384 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5385 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5386 wdev->netdev, dst, next_hop,
5387 &pinfo) < 0)
5388 goto out;
5389
5390 path_idx++;
5391 }
5392
5393 out:
5394 cb->args[2] = path_idx;
5395 err = skb->len;
5396 out_err:
5397 rtnl_unlock();
5398 return err;
5399 }
5400
5401 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
5402 {
5403 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5404 int err;
5405 struct net_device *dev = info->user_ptr[1];
5406 struct mpath_info pinfo;
5407 struct sk_buff *msg;
5408 u8 *dst = NULL;
5409 u8 next_hop[ETH_ALEN];
5410
5411 memset(&pinfo, 0, sizeof(pinfo));
5412
5413 if (!info->attrs[NL80211_ATTR_MAC])
5414 return -EINVAL;
5415
5416 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5417
5418 if (!rdev->ops->get_mpath)
5419 return -EOPNOTSUPP;
5420
5421 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5422 return -EOPNOTSUPP;
5423
5424 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
5425 if (err)
5426 return err;
5427
5428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5429 if (!msg)
5430 return -ENOMEM;
5431
5432 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5433 dev, dst, next_hop, &pinfo) < 0) {
5434 nlmsg_free(msg);
5435 return -ENOBUFS;
5436 }
5437
5438 return genlmsg_reply(msg, info);
5439 }
5440
5441 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
5442 {
5443 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5444 struct net_device *dev = info->user_ptr[1];
5445 u8 *dst = NULL;
5446 u8 *next_hop = NULL;
5447
5448 if (!info->attrs[NL80211_ATTR_MAC])
5449 return -EINVAL;
5450
5451 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5452 return -EINVAL;
5453
5454 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5455 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5456
5457 if (!rdev->ops->change_mpath)
5458 return -EOPNOTSUPP;
5459
5460 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5461 return -EOPNOTSUPP;
5462
5463 return rdev_change_mpath(rdev, dev, dst, next_hop);
5464 }
5465
5466 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
5467 {
5468 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5469 struct net_device *dev = info->user_ptr[1];
5470 u8 *dst = NULL;
5471 u8 *next_hop = NULL;
5472
5473 if (!info->attrs[NL80211_ATTR_MAC])
5474 return -EINVAL;
5475
5476 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
5477 return -EINVAL;
5478
5479 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5480 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
5481
5482 if (!rdev->ops->add_mpath)
5483 return -EOPNOTSUPP;
5484
5485 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5486 return -EOPNOTSUPP;
5487
5488 return rdev_add_mpath(rdev, dev, dst, next_hop);
5489 }
5490
5491 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
5492 {
5493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5494 struct net_device *dev = info->user_ptr[1];
5495 u8 *dst = NULL;
5496
5497 if (info->attrs[NL80211_ATTR_MAC])
5498 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5499
5500 if (!rdev->ops->del_mpath)
5501 return -EOPNOTSUPP;
5502
5503 return rdev_del_mpath(rdev, dev, dst);
5504 }
5505
5506 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
5507 {
5508 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5509 int err;
5510 struct net_device *dev = info->user_ptr[1];
5511 struct mpath_info pinfo;
5512 struct sk_buff *msg;
5513 u8 *dst = NULL;
5514 u8 mpp[ETH_ALEN];
5515
5516 memset(&pinfo, 0, sizeof(pinfo));
5517
5518 if (!info->attrs[NL80211_ATTR_MAC])
5519 return -EINVAL;
5520
5521 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
5522
5523 if (!rdev->ops->get_mpp)
5524 return -EOPNOTSUPP;
5525
5526 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
5527 return -EOPNOTSUPP;
5528
5529 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
5530 if (err)
5531 return err;
5532
5533 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5534 if (!msg)
5535 return -ENOMEM;
5536
5537 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
5538 dev, dst, mpp, &pinfo) < 0) {
5539 nlmsg_free(msg);
5540 return -ENOBUFS;
5541 }
5542
5543 return genlmsg_reply(msg, info);
5544 }
5545
5546 static int nl80211_dump_mpp(struct sk_buff *skb,
5547 struct netlink_callback *cb)
5548 {
5549 struct mpath_info pinfo;
5550 struct cfg80211_registered_device *rdev;
5551 struct wireless_dev *wdev;
5552 u8 dst[ETH_ALEN];
5553 u8 mpp[ETH_ALEN];
5554 int path_idx = cb->args[2];
5555 int err;
5556
5557 rtnl_lock();
5558 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5559 if (err)
5560 goto out_err;
5561
5562 if (!rdev->ops->dump_mpp) {
5563 err = -EOPNOTSUPP;
5564 goto out_err;
5565 }
5566
5567 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5568 err = -EOPNOTSUPP;
5569 goto out_err;
5570 }
5571
5572 while (1) {
5573 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5574 mpp, &pinfo);
5575 if (err == -ENOENT)
5576 break;
5577 if (err)
5578 goto out_err;
5579
5580 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5581 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5582 wdev->netdev, dst, mpp,
5583 &pinfo) < 0)
5584 goto out;
5585
5586 path_idx++;
5587 }
5588
5589 out:
5590 cb->args[2] = path_idx;
5591 err = skb->len;
5592 out_err:
5593 rtnl_unlock();
5594 return err;
5595 }
5596
5597 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5598 {
5599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5600 struct net_device *dev = info->user_ptr[1];
5601 struct wireless_dev *wdev = dev->ieee80211_ptr;
5602 struct bss_parameters params;
5603 int err;
5604
5605 memset(&params, 0, sizeof(params));
5606 /* default to not changing parameters */
5607 params.use_cts_prot = -1;
5608 params.use_short_preamble = -1;
5609 params.use_short_slot_time = -1;
5610 params.ap_isolate = -1;
5611 params.ht_opmode = -1;
5612 params.p2p_ctwindow = -1;
5613 params.p2p_opp_ps = -1;
5614
5615 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5616 params.use_cts_prot =
5617 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5618 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5619 params.use_short_preamble =
5620 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5621 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5622 params.use_short_slot_time =
5623 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5624 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5625 params.basic_rates =
5626 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5627 params.basic_rates_len =
5628 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5629 }
5630 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5631 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5632 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5633 params.ht_opmode =
5634 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5635
5636 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5637 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5638 return -EINVAL;
5639 params.p2p_ctwindow =
5640 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5641 if (params.p2p_ctwindow < 0)
5642 return -EINVAL;
5643 if (params.p2p_ctwindow != 0 &&
5644 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5645 return -EINVAL;
5646 }
5647
5648 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5649 u8 tmp;
5650
5651 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5652 return -EINVAL;
5653 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5654 if (tmp > 1)
5655 return -EINVAL;
5656 params.p2p_opp_ps = tmp;
5657 if (params.p2p_opp_ps &&
5658 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5659 return -EINVAL;
5660 }
5661
5662 if (!rdev->ops->change_bss)
5663 return -EOPNOTSUPP;
5664
5665 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5666 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5667 return -EOPNOTSUPP;
5668
5669 wdev_lock(wdev);
5670 err = rdev_change_bss(rdev, dev, &params);
5671 wdev_unlock(wdev);
5672
5673 return err;
5674 }
5675
5676 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5677 {
5678 char *data = NULL;
5679 bool is_indoor;
5680 enum nl80211_user_reg_hint_type user_reg_hint_type;
5681 u32 owner_nlportid;
5682
5683 /*
5684 * You should only get this when cfg80211 hasn't yet initialized
5685 * completely when built-in to the kernel right between the time
5686 * window between nl80211_init() and regulatory_init(), if that is
5687 * even possible.
5688 */
5689 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5690 return -EINPROGRESS;
5691
5692 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5693 user_reg_hint_type =
5694 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5695 else
5696 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5697
5698 switch (user_reg_hint_type) {
5699 case NL80211_USER_REG_HINT_USER:
5700 case NL80211_USER_REG_HINT_CELL_BASE:
5701 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5702 return -EINVAL;
5703
5704 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5705 return regulatory_hint_user(data, user_reg_hint_type);
5706 case NL80211_USER_REG_HINT_INDOOR:
5707 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5708 owner_nlportid = info->snd_portid;
5709 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5710 } else {
5711 owner_nlportid = 0;
5712 is_indoor = true;
5713 }
5714
5715 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5716 default:
5717 return -EINVAL;
5718 }
5719 }
5720
5721 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
5722 {
5723 return reg_reload_regdb();
5724 }
5725
5726 static int nl80211_get_mesh_config(struct sk_buff *skb,
5727 struct genl_info *info)
5728 {
5729 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5730 struct net_device *dev = info->user_ptr[1];
5731 struct wireless_dev *wdev = dev->ieee80211_ptr;
5732 struct mesh_config cur_params;
5733 int err = 0;
5734 void *hdr;
5735 struct nlattr *pinfoattr;
5736 struct sk_buff *msg;
5737
5738 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5739 return -EOPNOTSUPP;
5740
5741 if (!rdev->ops->get_mesh_config)
5742 return -EOPNOTSUPP;
5743
5744 wdev_lock(wdev);
5745 /* If not connected, get default parameters */
5746 if (!wdev->mesh_id_len)
5747 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5748 else
5749 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5750 wdev_unlock(wdev);
5751
5752 if (err)
5753 return err;
5754
5755 /* Draw up a netlink message to send back */
5756 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5757 if (!msg)
5758 return -ENOMEM;
5759 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5760 NL80211_CMD_GET_MESH_CONFIG);
5761 if (!hdr)
5762 goto out;
5763 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5764 if (!pinfoattr)
5765 goto nla_put_failure;
5766 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5767 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5768 cur_params.dot11MeshRetryTimeout) ||
5769 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5770 cur_params.dot11MeshConfirmTimeout) ||
5771 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5772 cur_params.dot11MeshHoldingTimeout) ||
5773 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5774 cur_params.dot11MeshMaxPeerLinks) ||
5775 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5776 cur_params.dot11MeshMaxRetries) ||
5777 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5778 cur_params.dot11MeshTTL) ||
5779 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5780 cur_params.element_ttl) ||
5781 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5782 cur_params.auto_open_plinks) ||
5783 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5784 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5785 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5786 cur_params.dot11MeshHWMPmaxPREQretries) ||
5787 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5788 cur_params.path_refresh_time) ||
5789 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5790 cur_params.min_discovery_timeout) ||
5791 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5792 cur_params.dot11MeshHWMPactivePathTimeout) ||
5793 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5794 cur_params.dot11MeshHWMPpreqMinInterval) ||
5795 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5796 cur_params.dot11MeshHWMPperrMinInterval) ||
5797 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5798 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5799 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5800 cur_params.dot11MeshHWMPRootMode) ||
5801 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5802 cur_params.dot11MeshHWMPRannInterval) ||
5803 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5804 cur_params.dot11MeshGateAnnouncementProtocol) ||
5805 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5806 cur_params.dot11MeshForwarding) ||
5807 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5808 cur_params.rssi_threshold) ||
5809 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5810 cur_params.ht_opmode) ||
5811 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5812 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5813 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5814 cur_params.dot11MeshHWMProotInterval) ||
5815 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5816 cur_params.dot11MeshHWMPconfirmationInterval) ||
5817 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5818 cur_params.power_mode) ||
5819 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5820 cur_params.dot11MeshAwakeWindowDuration) ||
5821 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5822 cur_params.plink_timeout))
5823 goto nla_put_failure;
5824 nla_nest_end(msg, pinfoattr);
5825 genlmsg_end(msg, hdr);
5826 return genlmsg_reply(msg, info);
5827
5828 nla_put_failure:
5829 genlmsg_cancel(msg, hdr);
5830 out:
5831 nlmsg_free(msg);
5832 return -ENOBUFS;
5833 }
5834
5835 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5836 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5837 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5838 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5839 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5840 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5841 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5842 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5843 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5844 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5845 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5846 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5847 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5848 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5849 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5850 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5851 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5852 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5853 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5854 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5855 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5856 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5857 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5858 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5859 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5860 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5861 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5862 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5863 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5864 };
5865
5866 static const struct nla_policy
5867 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5868 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5869 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5870 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5871 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5872 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5873 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5874 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5875 .len = IEEE80211_MAX_DATA_LEN },
5876 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5877 };
5878
5879 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5880 {
5881 u8 val = nla_get_u8(nla);
5882 if (val < min || val > max)
5883 return -EINVAL;
5884 *out = val;
5885 return 0;
5886 }
5887
5888 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5889 {
5890 u8 val = nla_get_u8(nla);
5891 if (val < min || val > max)
5892 return -EINVAL;
5893 *out = val;
5894 return 0;
5895 }
5896
5897 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5898 {
5899 u16 val = nla_get_u16(nla);
5900 if (val < min || val > max)
5901 return -EINVAL;
5902 *out = val;
5903 return 0;
5904 }
5905
5906 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5907 {
5908 u32 val = nla_get_u32(nla);
5909 if (val < min || val > max)
5910 return -EINVAL;
5911 *out = val;
5912 return 0;
5913 }
5914
5915 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5916 {
5917 s32 val = nla_get_s32(nla);
5918 if (val < min || val > max)
5919 return -EINVAL;
5920 *out = val;
5921 return 0;
5922 }
5923
5924 static int nl80211_check_power_mode(const struct nlattr *nla,
5925 enum nl80211_mesh_power_mode min,
5926 enum nl80211_mesh_power_mode max,
5927 enum nl80211_mesh_power_mode *out)
5928 {
5929 u32 val = nla_get_u32(nla);
5930 if (val < min || val > max)
5931 return -EINVAL;
5932 *out = val;
5933 return 0;
5934 }
5935
5936 static int nl80211_parse_mesh_config(struct genl_info *info,
5937 struct mesh_config *cfg,
5938 u32 *mask_out)
5939 {
5940 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5941 u32 mask = 0;
5942 u16 ht_opmode;
5943
5944 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5945 do { \
5946 if (tb[attr]) { \
5947 if (fn(tb[attr], min, max, &cfg->param)) \
5948 return -EINVAL; \
5949 mask |= (1 << (attr - 1)); \
5950 } \
5951 } while (0)
5952
5953 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5954 return -EINVAL;
5955 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5956 info->attrs[NL80211_ATTR_MESH_CONFIG],
5957 nl80211_meshconf_params_policy, info->extack))
5958 return -EINVAL;
5959
5960 /* This makes sure that there aren't more than 32 mesh config
5961 * parameters (otherwise our bitfield scheme would not work.) */
5962 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5963
5964 /* Fill in the params struct */
5965 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5966 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5967 nl80211_check_u16);
5968 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5969 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5970 nl80211_check_u16);
5971 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5972 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5973 nl80211_check_u16);
5974 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5975 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5976 nl80211_check_u16);
5977 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5978 mask, NL80211_MESHCONF_MAX_RETRIES,
5979 nl80211_check_u8);
5980 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5981 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5982 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5983 mask, NL80211_MESHCONF_ELEMENT_TTL,
5984 nl80211_check_u8);
5985 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5986 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5987 nl80211_check_bool);
5988 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5989 1, 255, mask,
5990 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5991 nl80211_check_u32);
5992 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5993 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5994 nl80211_check_u8);
5995 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5996 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5997 nl80211_check_u32);
5998 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5999 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6000 nl80211_check_u16);
6001 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6002 1, 65535, mask,
6003 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6004 nl80211_check_u32);
6005 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
6006 1, 65535, mask,
6007 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6008 nl80211_check_u16);
6009 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
6010 1, 65535, mask,
6011 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6012 nl80211_check_u16);
6013 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6014 dot11MeshHWMPnetDiameterTraversalTime,
6015 1, 65535, mask,
6016 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6017 nl80211_check_u16);
6018 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
6019 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
6020 nl80211_check_u8);
6021 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
6022 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6023 nl80211_check_u16);
6024 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6025 dot11MeshGateAnnouncementProtocol, 0, 1,
6026 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6027 nl80211_check_bool);
6028 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
6029 mask, NL80211_MESHCONF_FORWARDING,
6030 nl80211_check_bool);
6031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
6032 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
6033 nl80211_check_s32);
6034 /*
6035 * Check HT operation mode based on
6036 * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6037 */
6038 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6039 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6040
6041 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6042 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6043 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6044 return -EINVAL;
6045
6046 /* NON_HT_STA bit is reserved, but some programs set it */
6047 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6048
6049 cfg->ht_opmode = ht_opmode;
6050 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6051 }
6052 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
6053 1, 65535, mask,
6054 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6055 nl80211_check_u32);
6056 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
6057 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6058 nl80211_check_u16);
6059 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6060 dot11MeshHWMPconfirmationInterval,
6061 1, 65535, mask,
6062 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6063 nl80211_check_u16);
6064 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
6065 NL80211_MESH_POWER_ACTIVE,
6066 NL80211_MESH_POWER_MAX,
6067 mask, NL80211_MESHCONF_POWER_MODE,
6068 nl80211_check_power_mode);
6069 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
6070 0, 65535, mask,
6071 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
6072 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
6073 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
6074 nl80211_check_u32);
6075 if (mask_out)
6076 *mask_out = mask;
6077
6078 return 0;
6079
6080 #undef FILL_IN_MESH_PARAM_IF_SET
6081 }
6082
6083 static int nl80211_parse_mesh_setup(struct genl_info *info,
6084 struct mesh_setup *setup)
6085 {
6086 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6087 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6088
6089 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6090 return -EINVAL;
6091 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
6092 info->attrs[NL80211_ATTR_MESH_SETUP],
6093 nl80211_mesh_setup_params_policy, info->extack))
6094 return -EINVAL;
6095
6096 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6097 setup->sync_method =
6098 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6099 IEEE80211_SYNC_METHOD_VENDOR :
6100 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6101
6102 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6103 setup->path_sel_proto =
6104 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6105 IEEE80211_PATH_PROTOCOL_VENDOR :
6106 IEEE80211_PATH_PROTOCOL_HWMP;
6107
6108 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6109 setup->path_metric =
6110 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6111 IEEE80211_PATH_METRIC_VENDOR :
6112 IEEE80211_PATH_METRIC_AIRTIME;
6113
6114 if (tb[NL80211_MESH_SETUP_IE]) {
6115 struct nlattr *ieattr =
6116 tb[NL80211_MESH_SETUP_IE];
6117 if (!is_valid_ie_attr(ieattr))
6118 return -EINVAL;
6119 setup->ie = nla_data(ieattr);
6120 setup->ie_len = nla_len(ieattr);
6121 }
6122 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6123 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6124 return -EINVAL;
6125 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6126 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6127 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6128 if (setup->is_secure)
6129 setup->user_mpm = true;
6130
6131 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6132 if (!setup->user_mpm)
6133 return -EINVAL;
6134 setup->auth_id =
6135 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6136 }
6137
6138 return 0;
6139 }
6140
6141 static int nl80211_update_mesh_config(struct sk_buff *skb,
6142 struct genl_info *info)
6143 {
6144 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6145 struct net_device *dev = info->user_ptr[1];
6146 struct wireless_dev *wdev = dev->ieee80211_ptr;
6147 struct mesh_config cfg;
6148 u32 mask;
6149 int err;
6150
6151 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6152 return -EOPNOTSUPP;
6153
6154 if (!rdev->ops->update_mesh_config)
6155 return -EOPNOTSUPP;
6156
6157 err = nl80211_parse_mesh_config(info, &cfg, &mask);
6158 if (err)
6159 return err;
6160
6161 wdev_lock(wdev);
6162 if (!wdev->mesh_id_len)
6163 err = -ENOLINK;
6164
6165 if (!err)
6166 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6167
6168 wdev_unlock(wdev);
6169
6170 return err;
6171 }
6172
6173 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6174 struct sk_buff *msg)
6175 {
6176 struct nlattr *nl_reg_rules;
6177 unsigned int i;
6178
6179 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6180 (regdom->dfs_region &&
6181 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6182 goto nla_put_failure;
6183
6184 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
6185 if (!nl_reg_rules)
6186 goto nla_put_failure;
6187
6188 for (i = 0; i < regdom->n_reg_rules; i++) {
6189 struct nlattr *nl_reg_rule;
6190 const struct ieee80211_reg_rule *reg_rule;
6191 const struct ieee80211_freq_range *freq_range;
6192 const struct ieee80211_power_rule *power_rule;
6193 unsigned int max_bandwidth_khz;
6194
6195 reg_rule = &regdom->reg_rules[i];
6196 freq_range = &reg_rule->freq_range;
6197 power_rule = &reg_rule->power_rule;
6198
6199 nl_reg_rule = nla_nest_start(msg, i);
6200 if (!nl_reg_rule)
6201 goto nla_put_failure;
6202
6203 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6204 if (!max_bandwidth_khz)
6205 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6206 reg_rule);
6207
6208 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6209 reg_rule->flags) ||
6210 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6211 freq_range->start_freq_khz) ||
6212 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6213 freq_range->end_freq_khz) ||
6214 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6215 max_bandwidth_khz) ||
6216 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6217 power_rule->max_antenna_gain) ||
6218 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6219 power_rule->max_eirp) ||
6220 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6221 reg_rule->dfs_cac_ms))
6222 goto nla_put_failure;
6223
6224 nla_nest_end(msg, nl_reg_rule);
6225 }
6226
6227 nla_nest_end(msg, nl_reg_rules);
6228 return 0;
6229
6230 nla_put_failure:
6231 return -EMSGSIZE;
6232 }
6233
6234 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
6235 {
6236 const struct ieee80211_regdomain *regdom = NULL;
6237 struct cfg80211_registered_device *rdev;
6238 struct wiphy *wiphy = NULL;
6239 struct sk_buff *msg;
6240 void *hdr;
6241
6242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6243 if (!msg)
6244 return -ENOBUFS;
6245
6246 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6247 NL80211_CMD_GET_REG);
6248 if (!hdr)
6249 goto put_failure;
6250
6251 if (info->attrs[NL80211_ATTR_WIPHY]) {
6252 bool self_managed;
6253
6254 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6255 if (IS_ERR(rdev)) {
6256 nlmsg_free(msg);
6257 return PTR_ERR(rdev);
6258 }
6259
6260 wiphy = &rdev->wiphy;
6261 self_managed = wiphy->regulatory_flags &
6262 REGULATORY_WIPHY_SELF_MANAGED;
6263 regdom = get_wiphy_regdom(wiphy);
6264
6265 /* a self-managed-reg device must have a private regdom */
6266 if (WARN_ON(!regdom && self_managed)) {
6267 nlmsg_free(msg);
6268 return -EINVAL;
6269 }
6270
6271 if (regdom &&
6272 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6273 goto nla_put_failure;
6274 }
6275
6276 if (!wiphy && reg_last_request_cell_base() &&
6277 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6278 NL80211_USER_REG_HINT_CELL_BASE))
6279 goto nla_put_failure;
6280
6281 rcu_read_lock();
6282
6283 if (!regdom)
6284 regdom = rcu_dereference(cfg80211_regdomain);
6285
6286 if (nl80211_put_regdom(regdom, msg))
6287 goto nla_put_failure_rcu;
6288
6289 rcu_read_unlock();
6290
6291 genlmsg_end(msg, hdr);
6292 return genlmsg_reply(msg, info);
6293
6294 nla_put_failure_rcu:
6295 rcu_read_unlock();
6296 nla_put_failure:
6297 genlmsg_cancel(msg, hdr);
6298 put_failure:
6299 nlmsg_free(msg);
6300 return -EMSGSIZE;
6301 }
6302
6303 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
6304 u32 seq, int flags, struct wiphy *wiphy,
6305 const struct ieee80211_regdomain *regdom)
6306 {
6307 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6308 NL80211_CMD_GET_REG);
6309
6310 if (!hdr)
6311 return -1;
6312
6313 genl_dump_check_consistent(cb, hdr);
6314
6315 if (nl80211_put_regdom(regdom, msg))
6316 goto nla_put_failure;
6317
6318 if (!wiphy && reg_last_request_cell_base() &&
6319 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
6320 NL80211_USER_REG_HINT_CELL_BASE))
6321 goto nla_put_failure;
6322
6323 if (wiphy &&
6324 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
6325 goto nla_put_failure;
6326
6327 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
6328 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
6329 goto nla_put_failure;
6330
6331 genlmsg_end(msg, hdr);
6332 return 0;
6333
6334 nla_put_failure:
6335 genlmsg_cancel(msg, hdr);
6336 return -EMSGSIZE;
6337 }
6338
6339 static int nl80211_get_reg_dump(struct sk_buff *skb,
6340 struct netlink_callback *cb)
6341 {
6342 const struct ieee80211_regdomain *regdom = NULL;
6343 struct cfg80211_registered_device *rdev;
6344 int err, reg_idx, start = cb->args[2];
6345
6346 rtnl_lock();
6347
6348 if (cfg80211_regdomain && start == 0) {
6349 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6350 NLM_F_MULTI, NULL,
6351 rtnl_dereference(cfg80211_regdomain));
6352 if (err < 0)
6353 goto out_err;
6354 }
6355
6356 /* the global regdom is idx 0 */
6357 reg_idx = 1;
6358 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
6359 regdom = get_wiphy_regdom(&rdev->wiphy);
6360 if (!regdom)
6361 continue;
6362
6363 if (++reg_idx <= start)
6364 continue;
6365
6366 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
6367 NLM_F_MULTI, &rdev->wiphy, regdom);
6368 if (err < 0) {
6369 reg_idx--;
6370 break;
6371 }
6372 }
6373
6374 cb->args[2] = reg_idx;
6375 err = skb->len;
6376 out_err:
6377 rtnl_unlock();
6378 return err;
6379 }
6380
6381 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
6382 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
6383 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
6384 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
6385 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
6386 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
6387 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
6388 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
6389 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
6390 };
6391
6392 static int parse_reg_rule(struct nlattr *tb[],
6393 struct ieee80211_reg_rule *reg_rule)
6394 {
6395 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
6396 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
6397
6398 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
6399 return -EINVAL;
6400 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
6401 return -EINVAL;
6402 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
6403 return -EINVAL;
6404 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
6405 return -EINVAL;
6406 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
6407 return -EINVAL;
6408
6409 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
6410
6411 freq_range->start_freq_khz =
6412 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
6413 freq_range->end_freq_khz =
6414 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
6415 freq_range->max_bandwidth_khz =
6416 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
6417
6418 power_rule->max_eirp =
6419 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
6420
6421 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
6422 power_rule->max_antenna_gain =
6423 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
6424
6425 if (tb[NL80211_ATTR_DFS_CAC_TIME])
6426 reg_rule->dfs_cac_ms =
6427 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
6428
6429 return 0;
6430 }
6431
6432 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
6433 {
6434 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
6435 struct nlattr *nl_reg_rule;
6436 char *alpha2;
6437 int rem_reg_rules, r;
6438 u32 num_rules = 0, rule_idx = 0, size_of_regd;
6439 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
6440 struct ieee80211_regdomain *rd;
6441
6442 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6443 return -EINVAL;
6444
6445 if (!info->attrs[NL80211_ATTR_REG_RULES])
6446 return -EINVAL;
6447
6448 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6449
6450 if (info->attrs[NL80211_ATTR_DFS_REGION])
6451 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
6452
6453 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6454 rem_reg_rules) {
6455 num_rules++;
6456 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
6457 return -EINVAL;
6458 }
6459
6460 if (!reg_is_valid_request(alpha2))
6461 return -EINVAL;
6462
6463 size_of_regd = sizeof(struct ieee80211_regdomain) +
6464 num_rules * sizeof(struct ieee80211_reg_rule);
6465
6466 rd = kzalloc(size_of_regd, GFP_KERNEL);
6467 if (!rd)
6468 return -ENOMEM;
6469
6470 rd->n_reg_rules = num_rules;
6471 rd->alpha2[0] = alpha2[0];
6472 rd->alpha2[1] = alpha2[1];
6473
6474 /*
6475 * Disable DFS master mode if the DFS region was
6476 * not supported or known on this kernel.
6477 */
6478 if (reg_supported_dfs_region(dfs_region))
6479 rd->dfs_region = dfs_region;
6480
6481 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
6482 rem_reg_rules) {
6483 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX,
6484 nl_reg_rule, reg_rule_policy,
6485 info->extack);
6486 if (r)
6487 goto bad_reg;
6488 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
6489 if (r)
6490 goto bad_reg;
6491
6492 rule_idx++;
6493
6494 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
6495 r = -EINVAL;
6496 goto bad_reg;
6497 }
6498 }
6499
6500 /* set_regdom takes ownership of rd */
6501 return set_regdom(rd, REGD_SOURCE_CRDA);
6502 bad_reg:
6503 kfree(rd);
6504 return r;
6505 }
6506 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
6507
6508 static int validate_scan_freqs(struct nlattr *freqs)
6509 {
6510 struct nlattr *attr1, *attr2;
6511 int n_channels = 0, tmp1, tmp2;
6512
6513 nla_for_each_nested(attr1, freqs, tmp1)
6514 if (nla_len(attr1) != sizeof(u32))
6515 return 0;
6516
6517 nla_for_each_nested(attr1, freqs, tmp1) {
6518 n_channels++;
6519 /*
6520 * Some hardware has a limited channel list for
6521 * scanning, and it is pretty much nonsensical
6522 * to scan for a channel twice, so disallow that
6523 * and don't require drivers to check that the
6524 * channel list they get isn't longer than what
6525 * they can scan, as long as they can scan all
6526 * the channels they registered at once.
6527 */
6528 nla_for_each_nested(attr2, freqs, tmp2)
6529 if (attr1 != attr2 &&
6530 nla_get_u32(attr1) == nla_get_u32(attr2))
6531 return 0;
6532 }
6533
6534 return n_channels;
6535 }
6536
6537 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
6538 {
6539 return b < NUM_NL80211_BANDS && wiphy->bands[b];
6540 }
6541
6542 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
6543 struct cfg80211_bss_selection *bss_select)
6544 {
6545 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
6546 struct nlattr *nest;
6547 int err;
6548 bool found = false;
6549 int i;
6550
6551 /* only process one nested attribute */
6552 nest = nla_data(nla);
6553 if (!nla_ok(nest, nla_len(nest)))
6554 return -EINVAL;
6555
6556 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest,
6557 nl80211_bss_select_policy, NULL);
6558 if (err)
6559 return err;
6560
6561 /* only one attribute may be given */
6562 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6563 if (attr[i]) {
6564 if (found)
6565 return -EINVAL;
6566 found = true;
6567 }
6568 }
6569
6570 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6571
6572 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6573 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6574
6575 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6576 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6577 bss_select->param.band_pref =
6578 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6579 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6580 return -EINVAL;
6581 }
6582
6583 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6584 struct nl80211_bss_select_rssi_adjust *adj_param;
6585
6586 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6587 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6588 bss_select->param.adjust.band = adj_param->band;
6589 bss_select->param.adjust.delta = adj_param->delta;
6590 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6591 return -EINVAL;
6592 }
6593
6594 /* user-space did not provide behaviour attribute */
6595 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6596 return -EINVAL;
6597
6598 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6599 return -EINVAL;
6600
6601 return 0;
6602 }
6603
6604 static int nl80211_parse_random_mac(struct nlattr **attrs,
6605 u8 *mac_addr, u8 *mac_addr_mask)
6606 {
6607 int i;
6608
6609 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6610 eth_zero_addr(mac_addr);
6611 eth_zero_addr(mac_addr_mask);
6612 mac_addr[0] = 0x2;
6613 mac_addr_mask[0] = 0x3;
6614
6615 return 0;
6616 }
6617
6618 /* need both or none */
6619 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6620 return -EINVAL;
6621
6622 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6623 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6624
6625 /* don't allow or configure an mcast address */
6626 if (!is_multicast_ether_addr(mac_addr_mask) ||
6627 is_multicast_ether_addr(mac_addr))
6628 return -EINVAL;
6629
6630 /*
6631 * allow users to pass a MAC address that has bits set outside
6632 * of the mask, but don't bother drivers with having to deal
6633 * with such bits
6634 */
6635 for (i = 0; i < ETH_ALEN; i++)
6636 mac_addr[i] &= mac_addr_mask[i];
6637
6638 return 0;
6639 }
6640
6641 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
6642 {
6643 ASSERT_WDEV_LOCK(wdev);
6644
6645 if (!cfg80211_beaconing_iface_active(wdev))
6646 return true;
6647
6648 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
6649 return true;
6650
6651 return regulatory_pre_cac_allowed(wdev->wiphy);
6652 }
6653
6654 static int
6655 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
6656 void *request, struct nlattr **attrs,
6657 bool is_sched_scan)
6658 {
6659 u8 *mac_addr, *mac_addr_mask;
6660 u32 *flags;
6661 enum nl80211_feature_flags randomness_flag;
6662
6663 if (!attrs[NL80211_ATTR_SCAN_FLAGS])
6664 return 0;
6665
6666 if (is_sched_scan) {
6667 struct cfg80211_sched_scan_request *req = request;
6668
6669 randomness_flag = wdev ?
6670 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
6671 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6672 flags = &req->flags;
6673 mac_addr = req->mac_addr;
6674 mac_addr_mask = req->mac_addr_mask;
6675 } else {
6676 struct cfg80211_scan_request *req = request;
6677
6678 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
6679 flags = &req->flags;
6680 mac_addr = req->mac_addr;
6681 mac_addr_mask = req->mac_addr_mask;
6682 }
6683
6684 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
6685
6686 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6687 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN))
6688 return -EOPNOTSUPP;
6689
6690 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6691 int err;
6692
6693 if (!(wiphy->features & randomness_flag) ||
6694 (wdev && wdev->current_bss))
6695 return -EOPNOTSUPP;
6696
6697 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
6698 if (err)
6699 return err;
6700 }
6701
6702 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) &&
6703 !wiphy_ext_feature_isset(wiphy,
6704 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME))
6705 return -EOPNOTSUPP;
6706
6707 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) &&
6708 !wiphy_ext_feature_isset(wiphy,
6709 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP))
6710 return -EOPNOTSUPP;
6711
6712 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
6713 !wiphy_ext_feature_isset(wiphy,
6714 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION))
6715 return -EOPNOTSUPP;
6716
6717 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) &&
6718 !wiphy_ext_feature_isset(wiphy,
6719 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE))
6720 return -EOPNOTSUPP;
6721
6722 return 0;
6723 }
6724
6725 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6726 {
6727 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6728 struct wireless_dev *wdev = info->user_ptr[1];
6729 struct cfg80211_scan_request *request;
6730 struct nlattr *attr;
6731 struct wiphy *wiphy;
6732 int err, tmp, n_ssids = 0, n_channels, i;
6733 size_t ie_len;
6734
6735 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6736 return -EINVAL;
6737
6738 wiphy = &rdev->wiphy;
6739
6740 if (wdev->iftype == NL80211_IFTYPE_NAN)
6741 return -EOPNOTSUPP;
6742
6743 if (!rdev->ops->scan)
6744 return -EOPNOTSUPP;
6745
6746 if (rdev->scan_req || rdev->scan_msg) {
6747 err = -EBUSY;
6748 goto unlock;
6749 }
6750
6751 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6752 n_channels = validate_scan_freqs(
6753 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6754 if (!n_channels) {
6755 err = -EINVAL;
6756 goto unlock;
6757 }
6758 } else {
6759 n_channels = ieee80211_get_num_supported_channels(wiphy);
6760 }
6761
6762 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6763 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6764 n_ssids++;
6765
6766 if (n_ssids > wiphy->max_scan_ssids) {
6767 err = -EINVAL;
6768 goto unlock;
6769 }
6770
6771 if (info->attrs[NL80211_ATTR_IE])
6772 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6773 else
6774 ie_len = 0;
6775
6776 if (ie_len > wiphy->max_scan_ie_len) {
6777 err = -EINVAL;
6778 goto unlock;
6779 }
6780
6781 request = kzalloc(sizeof(*request)
6782 + sizeof(*request->ssids) * n_ssids
6783 + sizeof(*request->channels) * n_channels
6784 + ie_len, GFP_KERNEL);
6785 if (!request) {
6786 err = -ENOMEM;
6787 goto unlock;
6788 }
6789
6790 if (n_ssids)
6791 request->ssids = (void *)&request->channels[n_channels];
6792 request->n_ssids = n_ssids;
6793 if (ie_len) {
6794 if (n_ssids)
6795 request->ie = (void *)(request->ssids + n_ssids);
6796 else
6797 request->ie = (void *)(request->channels + n_channels);
6798 }
6799
6800 i = 0;
6801 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6802 /* user specified, bail out if channel not found */
6803 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6804 struct ieee80211_channel *chan;
6805
6806 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6807
6808 if (!chan) {
6809 err = -EINVAL;
6810 goto out_free;
6811 }
6812
6813 /* ignore disabled channels */
6814 if (chan->flags & IEEE80211_CHAN_DISABLED)
6815 continue;
6816
6817 request->channels[i] = chan;
6818 i++;
6819 }
6820 } else {
6821 enum nl80211_band band;
6822
6823 /* all channels */
6824 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6825 int j;
6826
6827 if (!wiphy->bands[band])
6828 continue;
6829 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6830 struct ieee80211_channel *chan;
6831
6832 chan = &wiphy->bands[band]->channels[j];
6833
6834 if (chan->flags & IEEE80211_CHAN_DISABLED)
6835 continue;
6836
6837 request->channels[i] = chan;
6838 i++;
6839 }
6840 }
6841 }
6842
6843 if (!i) {
6844 err = -EINVAL;
6845 goto out_free;
6846 }
6847
6848 request->n_channels = i;
6849
6850 wdev_lock(wdev);
6851 if (!cfg80211_off_channel_oper_allowed(wdev)) {
6852 struct ieee80211_channel *chan;
6853
6854 if (request->n_channels != 1) {
6855 wdev_unlock(wdev);
6856 err = -EBUSY;
6857 goto out_free;
6858 }
6859
6860 chan = request->channels[0];
6861 if (chan->center_freq != wdev->chandef.chan->center_freq) {
6862 wdev_unlock(wdev);
6863 err = -EBUSY;
6864 goto out_free;
6865 }
6866 }
6867 wdev_unlock(wdev);
6868
6869 i = 0;
6870 if (n_ssids) {
6871 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6872 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6873 err = -EINVAL;
6874 goto out_free;
6875 }
6876 request->ssids[i].ssid_len = nla_len(attr);
6877 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6878 i++;
6879 }
6880 }
6881
6882 if (info->attrs[NL80211_ATTR_IE]) {
6883 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6884 memcpy((void *)request->ie,
6885 nla_data(info->attrs[NL80211_ATTR_IE]),
6886 request->ie_len);
6887 }
6888
6889 for (i = 0; i < NUM_NL80211_BANDS; i++)
6890 if (wiphy->bands[i])
6891 request->rates[i] =
6892 (1 << wiphy->bands[i]->n_bitrates) - 1;
6893
6894 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6895 nla_for_each_nested(attr,
6896 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6897 tmp) {
6898 enum nl80211_band band = nla_type(attr);
6899
6900 if (band < 0 || band >= NUM_NL80211_BANDS) {
6901 err = -EINVAL;
6902 goto out_free;
6903 }
6904
6905 if (!wiphy->bands[band])
6906 continue;
6907
6908 err = ieee80211_get_ratemask(wiphy->bands[band],
6909 nla_data(attr),
6910 nla_len(attr),
6911 &request->rates[band]);
6912 if (err)
6913 goto out_free;
6914 }
6915 }
6916
6917 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6918 if (!wiphy_ext_feature_isset(wiphy,
6919 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6920 err = -EOPNOTSUPP;
6921 goto out_free;
6922 }
6923
6924 request->duration =
6925 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6926 request->duration_mandatory =
6927 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6928 }
6929
6930 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
6931 false);
6932 if (err)
6933 goto out_free;
6934
6935 request->no_cck =
6936 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6937
6938 /* Initial implementation used NL80211_ATTR_MAC to set the specific
6939 * BSSID to scan for. This was problematic because that same attribute
6940 * was already used for another purpose (local random MAC address). The
6941 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
6942 * compatibility with older userspace components, also use the
6943 * NL80211_ATTR_MAC value here if it can be determined to be used for
6944 * the specific BSSID use case instead of the random MAC address
6945 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
6946 */
6947 if (info->attrs[NL80211_ATTR_BSSID])
6948 memcpy(request->bssid,
6949 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
6950 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
6951 info->attrs[NL80211_ATTR_MAC])
6952 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6953 ETH_ALEN);
6954 else
6955 eth_broadcast_addr(request->bssid);
6956
6957 request->wdev = wdev;
6958 request->wiphy = &rdev->wiphy;
6959 request->scan_start = jiffies;
6960
6961 rdev->scan_req = request;
6962 err = rdev_scan(rdev, request);
6963
6964 if (!err) {
6965 nl80211_send_scan_start(rdev, wdev);
6966 if (wdev->netdev)
6967 dev_hold(wdev->netdev);
6968 } else {
6969 out_free:
6970 rdev->scan_req = NULL;
6971 kfree(request);
6972 }
6973
6974 unlock:
6975 return err;
6976 }
6977
6978 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6979 {
6980 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6981 struct wireless_dev *wdev = info->user_ptr[1];
6982
6983 if (!rdev->ops->abort_scan)
6984 return -EOPNOTSUPP;
6985
6986 if (rdev->scan_msg)
6987 return 0;
6988
6989 if (!rdev->scan_req)
6990 return -ENOENT;
6991
6992 rdev_abort_scan(rdev, wdev);
6993 return 0;
6994 }
6995
6996 static int
6997 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6998 struct cfg80211_sched_scan_request *request,
6999 struct nlattr **attrs)
7000 {
7001 int tmp, err, i = 0;
7002 struct nlattr *attr;
7003
7004 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7005 u32 interval;
7006
7007 /*
7008 * If scan plans are not specified,
7009 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7010 * case one scan plan will be set with the specified scan
7011 * interval and infinite number of iterations.
7012 */
7013 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7014 if (!interval)
7015 return -EINVAL;
7016
7017 request->scan_plans[0].interval =
7018 DIV_ROUND_UP(interval, MSEC_PER_SEC);
7019 if (!request->scan_plans[0].interval)
7020 return -EINVAL;
7021
7022 if (request->scan_plans[0].interval >
7023 wiphy->max_sched_scan_plan_interval)
7024 request->scan_plans[0].interval =
7025 wiphy->max_sched_scan_plan_interval;
7026
7027 return 0;
7028 }
7029
7030 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7031 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7032
7033 if (WARN_ON(i >= n_plans))
7034 return -EINVAL;
7035
7036 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX,
7037 attr, nl80211_plan_policy, NULL);
7038 if (err)
7039 return err;
7040
7041 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7042 return -EINVAL;
7043
7044 request->scan_plans[i].interval =
7045 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7046 if (!request->scan_plans[i].interval ||
7047 request->scan_plans[i].interval >
7048 wiphy->max_sched_scan_plan_interval)
7049 return -EINVAL;
7050
7051 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7052 request->scan_plans[i].iterations =
7053 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7054 if (!request->scan_plans[i].iterations ||
7055 (request->scan_plans[i].iterations >
7056 wiphy->max_sched_scan_plan_iterations))
7057 return -EINVAL;
7058 } else if (i < n_plans - 1) {
7059 /*
7060 * All scan plans but the last one must specify
7061 * a finite number of iterations
7062 */
7063 return -EINVAL;
7064 }
7065
7066 i++;
7067 }
7068
7069 /*
7070 * The last scan plan must not specify the number of
7071 * iterations, it is supposed to run infinitely
7072 */
7073 if (request->scan_plans[n_plans - 1].iterations)
7074 return -EINVAL;
7075
7076 return 0;
7077 }
7078
7079 static struct cfg80211_sched_scan_request *
7080 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7081 struct nlattr **attrs, int max_match_sets)
7082 {
7083 struct cfg80211_sched_scan_request *request;
7084 struct nlattr *attr;
7085 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7086 enum nl80211_band band;
7087 size_t ie_len;
7088 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7089 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7090
7091 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
7092 return ERR_PTR(-EINVAL);
7093
7094 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7095 n_channels = validate_scan_freqs(
7096 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7097 if (!n_channels)
7098 return ERR_PTR(-EINVAL);
7099 } else {
7100 n_channels = ieee80211_get_num_supported_channels(wiphy);
7101 }
7102
7103 if (attrs[NL80211_ATTR_SCAN_SSIDS])
7104 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7105 tmp)
7106 n_ssids++;
7107
7108 if (n_ssids > wiphy->max_sched_scan_ssids)
7109 return ERR_PTR(-EINVAL);
7110
7111 /*
7112 * First, count the number of 'real' matchsets. Due to an issue with
7113 * the old implementation, matchsets containing only the RSSI attribute
7114 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7115 * RSSI for all matchsets, rather than their own matchset for reporting
7116 * all APs with a strong RSSI. This is needed to be compatible with
7117 * older userspace that treated a matchset with only the RSSI as the
7118 * global RSSI for all other matchsets - if there are other matchsets.
7119 */
7120 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7121 nla_for_each_nested(attr,
7122 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7123 tmp) {
7124 struct nlattr *rssi;
7125
7126 err = nla_parse_nested(tb,
7127 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7128 attr, nl80211_match_policy,
7129 NULL);
7130 if (err)
7131 return ERR_PTR(err);
7132
7133 /* SSID and BSSID are mutually exclusive */
7134 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7135 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7136 return ERR_PTR(-EINVAL);
7137
7138 /* add other standalone attributes here */
7139 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7140 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7141 n_match_sets++;
7142 continue;
7143 }
7144 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7145 if (rssi)
7146 default_match_rssi = nla_get_s32(rssi);
7147 }
7148 }
7149
7150 /* However, if there's no other matchset, add the RSSI one */
7151 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7152 n_match_sets = 1;
7153
7154 if (n_match_sets > max_match_sets)
7155 return ERR_PTR(-EINVAL);
7156
7157 if (attrs[NL80211_ATTR_IE])
7158 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7159 else
7160 ie_len = 0;
7161
7162 if (ie_len > wiphy->max_sched_scan_ie_len)
7163 return ERR_PTR(-EINVAL);
7164
7165 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7166 /*
7167 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7168 * each scan plan already specifies its own interval
7169 */
7170 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7171 return ERR_PTR(-EINVAL);
7172
7173 nla_for_each_nested(attr,
7174 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7175 n_plans++;
7176 } else {
7177 /*
7178 * The scan interval attribute is kept for backward
7179 * compatibility. If no scan plans are specified and sched scan
7180 * interval is specified, one scan plan will be set with this
7181 * scan interval and infinite number of iterations.
7182 */
7183 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7184 return ERR_PTR(-EINVAL);
7185
7186 n_plans = 1;
7187 }
7188
7189 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
7190 return ERR_PTR(-EINVAL);
7191
7192 if (!wiphy_ext_feature_isset(
7193 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
7194 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
7195 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
7196 return ERR_PTR(-EINVAL);
7197
7198 request = kzalloc(sizeof(*request)
7199 + sizeof(*request->ssids) * n_ssids
7200 + sizeof(*request->match_sets) * n_match_sets
7201 + sizeof(*request->scan_plans) * n_plans
7202 + sizeof(*request->channels) * n_channels
7203 + ie_len, GFP_KERNEL);
7204 if (!request)
7205 return ERR_PTR(-ENOMEM);
7206
7207 if (n_ssids)
7208 request->ssids = (void *)&request->channels[n_channels];
7209 request->n_ssids = n_ssids;
7210 if (ie_len) {
7211 if (n_ssids)
7212 request->ie = (void *)(request->ssids + n_ssids);
7213 else
7214 request->ie = (void *)(request->channels + n_channels);
7215 }
7216
7217 if (n_match_sets) {
7218 if (request->ie)
7219 request->match_sets = (void *)(request->ie + ie_len);
7220 else if (n_ssids)
7221 request->match_sets =
7222 (void *)(request->ssids + n_ssids);
7223 else
7224 request->match_sets =
7225 (void *)(request->channels + n_channels);
7226 }
7227 request->n_match_sets = n_match_sets;
7228
7229 if (n_match_sets)
7230 request->scan_plans = (void *)(request->match_sets +
7231 n_match_sets);
7232 else if (request->ie)
7233 request->scan_plans = (void *)(request->ie + ie_len);
7234 else if (n_ssids)
7235 request->scan_plans = (void *)(request->ssids + n_ssids);
7236 else
7237 request->scan_plans = (void *)(request->channels + n_channels);
7238
7239 request->n_scan_plans = n_plans;
7240
7241 i = 0;
7242 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7243 /* user specified, bail out if channel not found */
7244 nla_for_each_nested(attr,
7245 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
7246 tmp) {
7247 struct ieee80211_channel *chan;
7248
7249 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7250
7251 if (!chan) {
7252 err = -EINVAL;
7253 goto out_free;
7254 }
7255
7256 /* ignore disabled channels */
7257 if (chan->flags & IEEE80211_CHAN_DISABLED)
7258 continue;
7259
7260 request->channels[i] = chan;
7261 i++;
7262 }
7263 } else {
7264 /* all channels */
7265 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7266 int j;
7267
7268 if (!wiphy->bands[band])
7269 continue;
7270 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7271 struct ieee80211_channel *chan;
7272
7273 chan = &wiphy->bands[band]->channels[j];
7274
7275 if (chan->flags & IEEE80211_CHAN_DISABLED)
7276 continue;
7277
7278 request->channels[i] = chan;
7279 i++;
7280 }
7281 }
7282 }
7283
7284 if (!i) {
7285 err = -EINVAL;
7286 goto out_free;
7287 }
7288
7289 request->n_channels = i;
7290
7291 i = 0;
7292 if (n_ssids) {
7293 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7294 tmp) {
7295 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7296 err = -EINVAL;
7297 goto out_free;
7298 }
7299 request->ssids[i].ssid_len = nla_len(attr);
7300 memcpy(request->ssids[i].ssid, nla_data(attr),
7301 nla_len(attr));
7302 i++;
7303 }
7304 }
7305
7306 i = 0;
7307 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7308 nla_for_each_nested(attr,
7309 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7310 tmp) {
7311 struct nlattr *ssid, *bssid, *rssi;
7312
7313 err = nla_parse_nested(tb,
7314 NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7315 attr, nl80211_match_policy,
7316 NULL);
7317 if (err)
7318 goto out_free;
7319 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
7320 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
7321 if (ssid || bssid) {
7322 if (WARN_ON(i >= n_match_sets)) {
7323 /* this indicates a programming error,
7324 * the loop above should have verified
7325 * things properly
7326 */
7327 err = -EINVAL;
7328 goto out_free;
7329 }
7330
7331 if (ssid) {
7332 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
7333 err = -EINVAL;
7334 goto out_free;
7335 }
7336 memcpy(request->match_sets[i].ssid.ssid,
7337 nla_data(ssid), nla_len(ssid));
7338 request->match_sets[i].ssid.ssid_len =
7339 nla_len(ssid);
7340 }
7341 if (bssid) {
7342 if (nla_len(bssid) != ETH_ALEN) {
7343 err = -EINVAL;
7344 goto out_free;
7345 }
7346 memcpy(request->match_sets[i].bssid,
7347 nla_data(bssid), ETH_ALEN);
7348 }
7349
7350 /* special attribute - old implementation w/a */
7351 request->match_sets[i].rssi_thold =
7352 default_match_rssi;
7353 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7354 if (rssi)
7355 request->match_sets[i].rssi_thold =
7356 nla_get_s32(rssi);
7357 }
7358 i++;
7359 }
7360
7361 /* there was no other matchset, so the RSSI one is alone */
7362 if (i == 0 && n_match_sets)
7363 request->match_sets[0].rssi_thold = default_match_rssi;
7364
7365 request->min_rssi_thold = INT_MAX;
7366 for (i = 0; i < n_match_sets; i++)
7367 request->min_rssi_thold =
7368 min(request->match_sets[i].rssi_thold,
7369 request->min_rssi_thold);
7370 } else {
7371 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
7372 }
7373
7374 if (ie_len) {
7375 request->ie_len = ie_len;
7376 memcpy((void *)request->ie,
7377 nla_data(attrs[NL80211_ATTR_IE]),
7378 request->ie_len);
7379 }
7380
7381 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
7382 if (err)
7383 goto out_free;
7384
7385 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
7386 request->delay =
7387 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
7388
7389 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
7390 request->relative_rssi = nla_get_s8(
7391 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
7392 request->relative_rssi_set = true;
7393 }
7394
7395 if (request->relative_rssi_set &&
7396 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
7397 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
7398
7399 rssi_adjust = nla_data(
7400 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
7401 request->rssi_adjust.band = rssi_adjust->band;
7402 request->rssi_adjust.delta = rssi_adjust->delta;
7403 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
7404 err = -EINVAL;
7405 goto out_free;
7406 }
7407 }
7408
7409 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
7410 if (err)
7411 goto out_free;
7412
7413 request->scan_start = jiffies;
7414
7415 return request;
7416
7417 out_free:
7418 kfree(request);
7419 return ERR_PTR(err);
7420 }
7421
7422 static int nl80211_start_sched_scan(struct sk_buff *skb,
7423 struct genl_info *info)
7424 {
7425 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7426 struct net_device *dev = info->user_ptr[1];
7427 struct wireless_dev *wdev = dev->ieee80211_ptr;
7428 struct cfg80211_sched_scan_request *sched_scan_req;
7429 bool want_multi;
7430 int err;
7431
7432 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
7433 return -EOPNOTSUPP;
7434
7435 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
7436 err = cfg80211_sched_scan_req_possible(rdev, want_multi);
7437 if (err)
7438 return err;
7439
7440 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
7441 info->attrs,
7442 rdev->wiphy.max_match_sets);
7443
7444 err = PTR_ERR_OR_ZERO(sched_scan_req);
7445 if (err)
7446 goto out_err;
7447
7448 /* leave request id zero for legacy request
7449 * or if driver does not support multi-scheduled scan
7450 */
7451 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) {
7452 while (!sched_scan_req->reqid)
7453 sched_scan_req->reqid = rdev->wiphy.cookie_counter++;
7454 }
7455
7456 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
7457 if (err)
7458 goto out_free;
7459
7460 sched_scan_req->dev = dev;
7461 sched_scan_req->wiphy = &rdev->wiphy;
7462
7463 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
7464 sched_scan_req->owner_nlportid = info->snd_portid;
7465
7466 cfg80211_add_sched_scan_req(rdev, sched_scan_req);
7467
7468 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
7469 return 0;
7470
7471 out_free:
7472 kfree(sched_scan_req);
7473 out_err:
7474 return err;
7475 }
7476
7477 static int nl80211_stop_sched_scan(struct sk_buff *skb,
7478 struct genl_info *info)
7479 {
7480 struct cfg80211_sched_scan_request *req;
7481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7482 u64 cookie;
7483
7484 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
7485 return -EOPNOTSUPP;
7486
7487 if (info->attrs[NL80211_ATTR_COOKIE]) {
7488 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7489 return __cfg80211_stop_sched_scan(rdev, cookie, false);
7490 }
7491
7492 req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
7493 struct cfg80211_sched_scan_request,
7494 list);
7495 if (!req || req->reqid ||
7496 (req->owner_nlportid &&
7497 req->owner_nlportid != info->snd_portid))
7498 return -ENOENT;
7499
7500 return cfg80211_stop_sched_scan_req(rdev, req, false);
7501 }
7502
7503 static int nl80211_start_radar_detection(struct sk_buff *skb,
7504 struct genl_info *info)
7505 {
7506 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7507 struct net_device *dev = info->user_ptr[1];
7508 struct wireless_dev *wdev = dev->ieee80211_ptr;
7509 struct cfg80211_chan_def chandef;
7510 enum nl80211_dfs_regions dfs_region;
7511 unsigned int cac_time_ms;
7512 int err;
7513
7514 dfs_region = reg_get_dfs_region(wdev->wiphy);
7515 if (dfs_region == NL80211_DFS_UNSET)
7516 return -EINVAL;
7517
7518 err = nl80211_parse_chandef(rdev, info, &chandef);
7519 if (err)
7520 return err;
7521
7522 if (netif_carrier_ok(dev))
7523 return -EBUSY;
7524
7525 if (wdev->cac_started)
7526 return -EBUSY;
7527
7528 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
7529 wdev->iftype);
7530 if (err < 0)
7531 return err;
7532
7533 if (err == 0)
7534 return -EINVAL;
7535
7536 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
7537 return -EINVAL;
7538
7539 if (!rdev->ops->start_radar_detection)
7540 return -EOPNOTSUPP;
7541
7542 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
7543 if (WARN_ON(!cac_time_ms))
7544 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
7545
7546 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
7547 if (!err) {
7548 wdev->chandef = chandef;
7549 wdev->cac_started = true;
7550 wdev->cac_start_time = jiffies;
7551 wdev->cac_time_ms = cac_time_ms;
7552 }
7553 return err;
7554 }
7555
7556 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
7557 {
7558 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7559 struct net_device *dev = info->user_ptr[1];
7560 struct wireless_dev *wdev = dev->ieee80211_ptr;
7561 struct cfg80211_csa_settings params;
7562 /* csa_attrs is defined static to avoid waste of stack size - this
7563 * function is called under RTNL lock, so this should not be a problem.
7564 */
7565 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
7566 int err;
7567 bool need_new_beacon = false;
7568 bool need_handle_dfs_flag = true;
7569 int len, i;
7570 u32 cs_count;
7571
7572 if (!rdev->ops->channel_switch ||
7573 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
7574 return -EOPNOTSUPP;
7575
7576 switch (dev->ieee80211_ptr->iftype) {
7577 case NL80211_IFTYPE_AP:
7578 case NL80211_IFTYPE_P2P_GO:
7579 need_new_beacon = true;
7580 /* For all modes except AP the handle_dfs flag needs to be
7581 * supplied to tell the kernel that userspace will handle radar
7582 * events when they happen. Otherwise a switch to a channel
7583 * requiring DFS will be rejected.
7584 */
7585 need_handle_dfs_flag = false;
7586
7587 /* useless if AP is not running */
7588 if (!wdev->beacon_interval)
7589 return -ENOTCONN;
7590 break;
7591 case NL80211_IFTYPE_ADHOC:
7592 if (!wdev->ssid_len)
7593 return -ENOTCONN;
7594 break;
7595 case NL80211_IFTYPE_MESH_POINT:
7596 if (!wdev->mesh_id_len)
7597 return -ENOTCONN;
7598 break;
7599 default:
7600 return -EOPNOTSUPP;
7601 }
7602
7603 memset(&params, 0, sizeof(params));
7604
7605 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7606 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
7607 return -EINVAL;
7608
7609 /* only important for AP, IBSS and mesh create IEs internally */
7610 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
7611 return -EINVAL;
7612
7613 /* Even though the attribute is u32, the specification says
7614 * u8, so let's make sure we don't overflow.
7615 */
7616 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
7617 if (cs_count > 255)
7618 return -EINVAL;
7619
7620 params.count = cs_count;
7621
7622 if (!need_new_beacon)
7623 goto skip_beacons;
7624
7625 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
7626 if (err)
7627 return err;
7628
7629 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
7630 info->attrs[NL80211_ATTR_CSA_IES],
7631 nl80211_policy, info->extack);
7632 if (err)
7633 return err;
7634
7635 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
7636 if (err)
7637 return err;
7638
7639 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
7640 return -EINVAL;
7641
7642 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7643 if (!len || (len % sizeof(u16)))
7644 return -EINVAL;
7645
7646 params.n_counter_offsets_beacon = len / sizeof(u16);
7647 if (rdev->wiphy.max_num_csa_counters &&
7648 (params.n_counter_offsets_beacon >
7649 rdev->wiphy.max_num_csa_counters))
7650 return -EINVAL;
7651
7652 params.counter_offsets_beacon =
7653 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
7654
7655 /* sanity checks - counters should fit and be the same */
7656 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
7657 u16 offset = params.counter_offsets_beacon[i];
7658
7659 if (offset >= params.beacon_csa.tail_len)
7660 return -EINVAL;
7661
7662 if (params.beacon_csa.tail[offset] != params.count)
7663 return -EINVAL;
7664 }
7665
7666 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
7667 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7668 if (!len || (len % sizeof(u16)))
7669 return -EINVAL;
7670
7671 params.n_counter_offsets_presp = len / sizeof(u16);
7672 if (rdev->wiphy.max_num_csa_counters &&
7673 (params.n_counter_offsets_presp >
7674 rdev->wiphy.max_num_csa_counters))
7675 return -EINVAL;
7676
7677 params.counter_offsets_presp =
7678 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
7679
7680 /* sanity checks - counters should fit and be the same */
7681 for (i = 0; i < params.n_counter_offsets_presp; i++) {
7682 u16 offset = params.counter_offsets_presp[i];
7683
7684 if (offset >= params.beacon_csa.probe_resp_len)
7685 return -EINVAL;
7686
7687 if (params.beacon_csa.probe_resp[offset] !=
7688 params.count)
7689 return -EINVAL;
7690 }
7691 }
7692
7693 skip_beacons:
7694 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7695 if (err)
7696 return err;
7697
7698 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7699 wdev->iftype))
7700 return -EINVAL;
7701
7702 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7703 &params.chandef,
7704 wdev->iftype);
7705 if (err < 0)
7706 return err;
7707
7708 if (err > 0) {
7709 params.radar_required = true;
7710 if (need_handle_dfs_flag &&
7711 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
7712 return -EINVAL;
7713 }
7714 }
7715
7716 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7717 params.block_tx = true;
7718
7719 wdev_lock(wdev);
7720 err = rdev_channel_switch(rdev, dev, &params);
7721 wdev_unlock(wdev);
7722
7723 return err;
7724 }
7725
7726 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7727 u32 seq, int flags,
7728 struct cfg80211_registered_device *rdev,
7729 struct wireless_dev *wdev,
7730 struct cfg80211_internal_bss *intbss)
7731 {
7732 struct cfg80211_bss *res = &intbss->pub;
7733 const struct cfg80211_bss_ies *ies;
7734 void *hdr;
7735 struct nlattr *bss;
7736
7737 ASSERT_WDEV_LOCK(wdev);
7738
7739 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7740 NL80211_CMD_NEW_SCAN_RESULTS);
7741 if (!hdr)
7742 return -1;
7743
7744 genl_dump_check_consistent(cb, hdr);
7745
7746 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7747 goto nla_put_failure;
7748 if (wdev->netdev &&
7749 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7750 goto nla_put_failure;
7751 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7752 NL80211_ATTR_PAD))
7753 goto nla_put_failure;
7754
7755 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7756 if (!bss)
7757 goto nla_put_failure;
7758 if ((!is_zero_ether_addr(res->bssid) &&
7759 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7760 goto nla_put_failure;
7761
7762 rcu_read_lock();
7763 /* indicate whether we have probe response data or not */
7764 if (rcu_access_pointer(res->proberesp_ies) &&
7765 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7766 goto fail_unlock_rcu;
7767
7768 /* this pointer prefers to be pointed to probe response data
7769 * but is always valid
7770 */
7771 ies = rcu_dereference(res->ies);
7772 if (ies) {
7773 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7774 NL80211_BSS_PAD))
7775 goto fail_unlock_rcu;
7776 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7777 ies->len, ies->data))
7778 goto fail_unlock_rcu;
7779 }
7780
7781 /* and this pointer is always (unless driver didn't know) beacon data */
7782 ies = rcu_dereference(res->beacon_ies);
7783 if (ies && ies->from_beacon) {
7784 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7785 NL80211_BSS_PAD))
7786 goto fail_unlock_rcu;
7787 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7788 ies->len, ies->data))
7789 goto fail_unlock_rcu;
7790 }
7791 rcu_read_unlock();
7792
7793 if (res->beacon_interval &&
7794 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7795 goto nla_put_failure;
7796 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7797 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7798 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7799 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7800 jiffies_to_msecs(jiffies - intbss->ts)))
7801 goto nla_put_failure;
7802
7803 if (intbss->parent_tsf &&
7804 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7805 intbss->parent_tsf, NL80211_BSS_PAD) ||
7806 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7807 intbss->parent_bssid)))
7808 goto nla_put_failure;
7809
7810 if (intbss->ts_boottime &&
7811 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7812 intbss->ts_boottime, NL80211_BSS_PAD))
7813 goto nla_put_failure;
7814
7815 switch (rdev->wiphy.signal_type) {
7816 case CFG80211_SIGNAL_TYPE_MBM:
7817 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7818 goto nla_put_failure;
7819 break;
7820 case CFG80211_SIGNAL_TYPE_UNSPEC:
7821 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7822 goto nla_put_failure;
7823 break;
7824 default:
7825 break;
7826 }
7827
7828 switch (wdev->iftype) {
7829 case NL80211_IFTYPE_P2P_CLIENT:
7830 case NL80211_IFTYPE_STATION:
7831 if (intbss == wdev->current_bss &&
7832 nla_put_u32(msg, NL80211_BSS_STATUS,
7833 NL80211_BSS_STATUS_ASSOCIATED))
7834 goto nla_put_failure;
7835 break;
7836 case NL80211_IFTYPE_ADHOC:
7837 if (intbss == wdev->current_bss &&
7838 nla_put_u32(msg, NL80211_BSS_STATUS,
7839 NL80211_BSS_STATUS_IBSS_JOINED))
7840 goto nla_put_failure;
7841 break;
7842 default:
7843 break;
7844 }
7845
7846 nla_nest_end(msg, bss);
7847
7848 genlmsg_end(msg, hdr);
7849 return 0;
7850
7851 fail_unlock_rcu:
7852 rcu_read_unlock();
7853 nla_put_failure:
7854 genlmsg_cancel(msg, hdr);
7855 return -EMSGSIZE;
7856 }
7857
7858 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7859 {
7860 struct cfg80211_registered_device *rdev;
7861 struct cfg80211_internal_bss *scan;
7862 struct wireless_dev *wdev;
7863 int start = cb->args[2], idx = 0;
7864 int err;
7865
7866 rtnl_lock();
7867 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7868 if (err) {
7869 rtnl_unlock();
7870 return err;
7871 }
7872
7873 wdev_lock(wdev);
7874 spin_lock_bh(&rdev->bss_lock);
7875 cfg80211_bss_expire(rdev);
7876
7877 cb->seq = rdev->bss_generation;
7878
7879 list_for_each_entry(scan, &rdev->bss_list, list) {
7880 if (++idx <= start)
7881 continue;
7882 if (nl80211_send_bss(skb, cb,
7883 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7884 rdev, wdev, scan) < 0) {
7885 idx--;
7886 break;
7887 }
7888 }
7889
7890 spin_unlock_bh(&rdev->bss_lock);
7891 wdev_unlock(wdev);
7892
7893 cb->args[2] = idx;
7894 rtnl_unlock();
7895
7896 return skb->len;
7897 }
7898
7899 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7900 int flags, struct net_device *dev,
7901 bool allow_radio_stats,
7902 struct survey_info *survey)
7903 {
7904 void *hdr;
7905 struct nlattr *infoattr;
7906
7907 /* skip radio stats if userspace didn't request them */
7908 if (!survey->channel && !allow_radio_stats)
7909 return 0;
7910
7911 hdr = nl80211hdr_put(msg, portid, seq, flags,
7912 NL80211_CMD_NEW_SURVEY_RESULTS);
7913 if (!hdr)
7914 return -ENOMEM;
7915
7916 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7917 goto nla_put_failure;
7918
7919 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7920 if (!infoattr)
7921 goto nla_put_failure;
7922
7923 if (survey->channel &&
7924 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7925 survey->channel->center_freq))
7926 goto nla_put_failure;
7927
7928 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7929 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7930 goto nla_put_failure;
7931 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7932 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7933 goto nla_put_failure;
7934 if ((survey->filled & SURVEY_INFO_TIME) &&
7935 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7936 survey->time, NL80211_SURVEY_INFO_PAD))
7937 goto nla_put_failure;
7938 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7939 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7940 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7941 goto nla_put_failure;
7942 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7943 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7944 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7945 goto nla_put_failure;
7946 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7947 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7948 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7949 goto nla_put_failure;
7950 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7951 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7952 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7953 goto nla_put_failure;
7954 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7955 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7956 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7957 goto nla_put_failure;
7958
7959 nla_nest_end(msg, infoattr);
7960
7961 genlmsg_end(msg, hdr);
7962 return 0;
7963
7964 nla_put_failure:
7965 genlmsg_cancel(msg, hdr);
7966 return -EMSGSIZE;
7967 }
7968
7969 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7970 {
7971 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
7972 struct survey_info survey;
7973 struct cfg80211_registered_device *rdev;
7974 struct wireless_dev *wdev;
7975 int survey_idx = cb->args[2];
7976 int res;
7977 bool radio_stats;
7978
7979 rtnl_lock();
7980 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7981 if (res)
7982 goto out_err;
7983
7984 /* prepare_wdev_dump parsed the attributes */
7985 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7986
7987 if (!wdev->netdev) {
7988 res = -EINVAL;
7989 goto out_err;
7990 }
7991
7992 if (!rdev->ops->dump_survey) {
7993 res = -EOPNOTSUPP;
7994 goto out_err;
7995 }
7996
7997 while (1) {
7998 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7999 if (res == -ENOENT)
8000 break;
8001 if (res)
8002 goto out_err;
8003
8004 /* don't send disabled channels, but do send non-channel data */
8005 if (survey.channel &&
8006 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8007 survey_idx++;
8008 continue;
8009 }
8010
8011 if (nl80211_send_survey(skb,
8012 NETLINK_CB(cb->skb).portid,
8013 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8014 wdev->netdev, radio_stats, &survey) < 0)
8015 goto out;
8016 survey_idx++;
8017 }
8018
8019 out:
8020 cb->args[2] = survey_idx;
8021 res = skb->len;
8022 out_err:
8023 rtnl_unlock();
8024 return res;
8025 }
8026
8027 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8028 {
8029 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8030 NL80211_WPA_VERSION_2));
8031 }
8032
8033 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8034 {
8035 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8036 struct net_device *dev = info->user_ptr[1];
8037 struct ieee80211_channel *chan;
8038 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8039 int err, ssid_len, ie_len = 0, auth_data_len = 0;
8040 enum nl80211_auth_type auth_type;
8041 struct key_parse key;
8042 bool local_state_change;
8043
8044 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8045 return -EINVAL;
8046
8047 if (!info->attrs[NL80211_ATTR_MAC])
8048 return -EINVAL;
8049
8050 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8051 return -EINVAL;
8052
8053 if (!info->attrs[NL80211_ATTR_SSID])
8054 return -EINVAL;
8055
8056 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8057 return -EINVAL;
8058
8059 err = nl80211_parse_key(info, &key);
8060 if (err)
8061 return err;
8062
8063 if (key.idx >= 0) {
8064 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8065 return -EINVAL;
8066 if (!key.p.key || !key.p.key_len)
8067 return -EINVAL;
8068 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8069 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8070 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8071 key.p.key_len != WLAN_KEY_LEN_WEP104))
8072 return -EINVAL;
8073 if (key.idx > 3)
8074 return -EINVAL;
8075 } else {
8076 key.p.key_len = 0;
8077 key.p.key = NULL;
8078 }
8079
8080 if (key.idx >= 0) {
8081 int i;
8082 bool ok = false;
8083
8084 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8085 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8086 ok = true;
8087 break;
8088 }
8089 }
8090 if (!ok)
8091 return -EINVAL;
8092 }
8093
8094 if (!rdev->ops->auth)
8095 return -EOPNOTSUPP;
8096
8097 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8098 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8099 return -EOPNOTSUPP;
8100
8101 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8102 chan = nl80211_get_valid_chan(&rdev->wiphy,
8103 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8104 if (!chan)
8105 return -EINVAL;
8106
8107 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8108 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8109
8110 if (info->attrs[NL80211_ATTR_IE]) {
8111 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8112 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8113 }
8114
8115 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8116 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
8117 return -EINVAL;
8118
8119 if ((auth_type == NL80211_AUTHTYPE_SAE ||
8120 auth_type == NL80211_AUTHTYPE_FILS_SK ||
8121 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
8122 auth_type == NL80211_AUTHTYPE_FILS_PK) &&
8123 !info->attrs[NL80211_ATTR_AUTH_DATA])
8124 return -EINVAL;
8125
8126 if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
8127 if (auth_type != NL80211_AUTHTYPE_SAE &&
8128 auth_type != NL80211_AUTHTYPE_FILS_SK &&
8129 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
8130 auth_type != NL80211_AUTHTYPE_FILS_PK)
8131 return -EINVAL;
8132 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
8133 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
8134 /* need to include at least Auth Transaction and Status Code */
8135 if (auth_data_len < 4)
8136 return -EINVAL;
8137 }
8138
8139 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8140
8141 /*
8142 * Since we no longer track auth state, ignore
8143 * requests to only change local state.
8144 */
8145 if (local_state_change)
8146 return 0;
8147
8148 wdev_lock(dev->ieee80211_ptr);
8149 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
8150 ssid, ssid_len, ie, ie_len,
8151 key.p.key, key.p.key_len, key.idx,
8152 auth_data, auth_data_len);
8153 wdev_unlock(dev->ieee80211_ptr);
8154 return err;
8155 }
8156
8157 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
8158 struct genl_info *info,
8159 struct cfg80211_crypto_settings *settings,
8160 int cipher_limit)
8161 {
8162 memset(settings, 0, sizeof(*settings));
8163
8164 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
8165
8166 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
8167 u16 proto;
8168
8169 proto = nla_get_u16(
8170 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
8171 settings->control_port_ethertype = cpu_to_be16(proto);
8172 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
8173 proto != ETH_P_PAE)
8174 return -EINVAL;
8175 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
8176 settings->control_port_no_encrypt = true;
8177 } else
8178 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
8179
8180 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
8181 void *data;
8182 int len, i;
8183
8184 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8185 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
8186 settings->n_ciphers_pairwise = len / sizeof(u32);
8187
8188 if (len % sizeof(u32))
8189 return -EINVAL;
8190
8191 if (settings->n_ciphers_pairwise > cipher_limit)
8192 return -EINVAL;
8193
8194 memcpy(settings->ciphers_pairwise, data, len);
8195
8196 for (i = 0; i < settings->n_ciphers_pairwise; i++)
8197 if (!cfg80211_supported_cipher_suite(
8198 &rdev->wiphy,
8199 settings->ciphers_pairwise[i]))
8200 return -EINVAL;
8201 }
8202
8203 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
8204 settings->cipher_group =
8205 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
8206 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
8207 settings->cipher_group))
8208 return -EINVAL;
8209 }
8210
8211 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
8212 settings->wpa_versions =
8213 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
8214 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
8215 return -EINVAL;
8216 }
8217
8218 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
8219 void *data;
8220 int len;
8221
8222 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
8223 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
8224 settings->n_akm_suites = len / sizeof(u32);
8225
8226 if (len % sizeof(u32))
8227 return -EINVAL;
8228
8229 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
8230 return -EINVAL;
8231
8232 memcpy(settings->akm_suites, data, len);
8233 }
8234
8235 if (info->attrs[NL80211_ATTR_PMK]) {
8236 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
8237 return -EINVAL;
8238 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8239 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
8240 return -EINVAL;
8241 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
8242 }
8243
8244 return 0;
8245 }
8246
8247 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
8248 {
8249 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8250 struct net_device *dev = info->user_ptr[1];
8251 struct ieee80211_channel *chan;
8252 struct cfg80211_assoc_request req = {};
8253 const u8 *bssid, *ssid;
8254 int err, ssid_len = 0;
8255
8256 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8257 return -EINVAL;
8258
8259 if (!info->attrs[NL80211_ATTR_MAC] ||
8260 !info->attrs[NL80211_ATTR_SSID] ||
8261 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
8262 return -EINVAL;
8263
8264 if (!rdev->ops->assoc)
8265 return -EOPNOTSUPP;
8266
8267 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8268 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8269 return -EOPNOTSUPP;
8270
8271 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8272
8273 chan = nl80211_get_valid_chan(&rdev->wiphy,
8274 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8275 if (!chan)
8276 return -EINVAL;
8277
8278 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8279 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8280
8281 if (info->attrs[NL80211_ATTR_IE]) {
8282 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8283 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8284 }
8285
8286 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8287 enum nl80211_mfp mfp =
8288 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8289 if (mfp == NL80211_MFP_REQUIRED)
8290 req.use_mfp = true;
8291 else if (mfp != NL80211_MFP_NO)
8292 return -EINVAL;
8293 }
8294
8295 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8296 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8297
8298 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8299 req.flags |= ASSOC_REQ_DISABLE_HT;
8300
8301 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8302 memcpy(&req.ht_capa_mask,
8303 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8304 sizeof(req.ht_capa_mask));
8305
8306 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8307 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8308 return -EINVAL;
8309 memcpy(&req.ht_capa,
8310 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8311 sizeof(req.ht_capa));
8312 }
8313
8314 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8315 req.flags |= ASSOC_REQ_DISABLE_VHT;
8316
8317 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8318 memcpy(&req.vht_capa_mask,
8319 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8320 sizeof(req.vht_capa_mask));
8321
8322 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8323 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8324 return -EINVAL;
8325 memcpy(&req.vht_capa,
8326 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8327 sizeof(req.vht_capa));
8328 }
8329
8330 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8331 if (!((rdev->wiphy.features &
8332 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8333 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8334 !wiphy_ext_feature_isset(&rdev->wiphy,
8335 NL80211_EXT_FEATURE_RRM))
8336 return -EINVAL;
8337 req.flags |= ASSOC_REQ_USE_RRM;
8338 }
8339
8340 if (info->attrs[NL80211_ATTR_FILS_KEK]) {
8341 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
8342 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
8343 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
8344 return -EINVAL;
8345 req.fils_nonces =
8346 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
8347 }
8348
8349 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
8350 if (!err) {
8351 wdev_lock(dev->ieee80211_ptr);
8352
8353 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
8354 ssid, ssid_len, &req);
8355
8356 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8357 dev->ieee80211_ptr->conn_owner_nlportid =
8358 info->snd_portid;
8359 memcpy(dev->ieee80211_ptr->disconnect_bssid,
8360 bssid, ETH_ALEN);
8361 }
8362
8363 wdev_unlock(dev->ieee80211_ptr);
8364 }
8365
8366 return err;
8367 }
8368
8369 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
8370 {
8371 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8372 struct net_device *dev = info->user_ptr[1];
8373 const u8 *ie = NULL, *bssid;
8374 int ie_len = 0, err;
8375 u16 reason_code;
8376 bool local_state_change;
8377
8378 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8379 return -EINVAL;
8380
8381 if (!info->attrs[NL80211_ATTR_MAC])
8382 return -EINVAL;
8383
8384 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8385 return -EINVAL;
8386
8387 if (!rdev->ops->deauth)
8388 return -EOPNOTSUPP;
8389
8390 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8391 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8392 return -EOPNOTSUPP;
8393
8394 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8395
8396 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8397 if (reason_code == 0) {
8398 /* Reason Code 0 is reserved */
8399 return -EINVAL;
8400 }
8401
8402 if (info->attrs[NL80211_ATTR_IE]) {
8403 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8404 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8405 }
8406
8407 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8408
8409 wdev_lock(dev->ieee80211_ptr);
8410 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
8411 local_state_change);
8412 wdev_unlock(dev->ieee80211_ptr);
8413 return err;
8414 }
8415
8416 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
8417 {
8418 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8419 struct net_device *dev = info->user_ptr[1];
8420 const u8 *ie = NULL, *bssid;
8421 int ie_len = 0, err;
8422 u16 reason_code;
8423 bool local_state_change;
8424
8425 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8426 return -EINVAL;
8427
8428 if (!info->attrs[NL80211_ATTR_MAC])
8429 return -EINVAL;
8430
8431 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8432 return -EINVAL;
8433
8434 if (!rdev->ops->disassoc)
8435 return -EOPNOTSUPP;
8436
8437 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8438 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8439 return -EOPNOTSUPP;
8440
8441 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8442
8443 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8444 if (reason_code == 0) {
8445 /* Reason Code 0 is reserved */
8446 return -EINVAL;
8447 }
8448
8449 if (info->attrs[NL80211_ATTR_IE]) {
8450 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8451 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8452 }
8453
8454 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
8455
8456 wdev_lock(dev->ieee80211_ptr);
8457 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
8458 local_state_change);
8459 wdev_unlock(dev->ieee80211_ptr);
8460 return err;
8461 }
8462
8463 static bool
8464 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
8465 int mcast_rate[NUM_NL80211_BANDS],
8466 int rateval)
8467 {
8468 struct wiphy *wiphy = &rdev->wiphy;
8469 bool found = false;
8470 int band, i;
8471
8472 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8473 struct ieee80211_supported_band *sband;
8474
8475 sband = wiphy->bands[band];
8476 if (!sband)
8477 continue;
8478
8479 for (i = 0; i < sband->n_bitrates; i++) {
8480 if (sband->bitrates[i].bitrate == rateval) {
8481 mcast_rate[band] = i + 1;
8482 found = true;
8483 break;
8484 }
8485 }
8486 }
8487
8488 return found;
8489 }
8490
8491 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
8492 {
8493 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8494 struct net_device *dev = info->user_ptr[1];
8495 struct cfg80211_ibss_params ibss;
8496 struct wiphy *wiphy;
8497 struct cfg80211_cached_keys *connkeys = NULL;
8498 int err;
8499
8500 memset(&ibss, 0, sizeof(ibss));
8501
8502 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8503 return -EINVAL;
8504
8505 if (!info->attrs[NL80211_ATTR_SSID] ||
8506 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8507 return -EINVAL;
8508
8509 ibss.beacon_interval = 100;
8510
8511 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
8512 ibss.beacon_interval =
8513 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8514
8515 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
8516 ibss.beacon_interval);
8517 if (err)
8518 return err;
8519
8520 if (!rdev->ops->join_ibss)
8521 return -EOPNOTSUPP;
8522
8523 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8524 return -EOPNOTSUPP;
8525
8526 wiphy = &rdev->wiphy;
8527
8528 if (info->attrs[NL80211_ATTR_MAC]) {
8529 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8530
8531 if (!is_valid_ether_addr(ibss.bssid))
8532 return -EINVAL;
8533 }
8534 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8535 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8536
8537 if (info->attrs[NL80211_ATTR_IE]) {
8538 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8539 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8540 }
8541
8542 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
8543 if (err)
8544 return err;
8545
8546 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
8547 NL80211_IFTYPE_ADHOC))
8548 return -EINVAL;
8549
8550 switch (ibss.chandef.width) {
8551 case NL80211_CHAN_WIDTH_5:
8552 case NL80211_CHAN_WIDTH_10:
8553 case NL80211_CHAN_WIDTH_20_NOHT:
8554 break;
8555 case NL80211_CHAN_WIDTH_20:
8556 case NL80211_CHAN_WIDTH_40:
8557 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8558 return -EINVAL;
8559 break;
8560 case NL80211_CHAN_WIDTH_80:
8561 case NL80211_CHAN_WIDTH_80P80:
8562 case NL80211_CHAN_WIDTH_160:
8563 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
8564 return -EINVAL;
8565 if (!wiphy_ext_feature_isset(&rdev->wiphy,
8566 NL80211_EXT_FEATURE_VHT_IBSS))
8567 return -EINVAL;
8568 break;
8569 default:
8570 return -EINVAL;
8571 }
8572
8573 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
8574 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
8575
8576 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8577 u8 *rates =
8578 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8579 int n_rates =
8580 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8581 struct ieee80211_supported_band *sband =
8582 wiphy->bands[ibss.chandef.chan->band];
8583
8584 err = ieee80211_get_ratemask(sband, rates, n_rates,
8585 &ibss.basic_rates);
8586 if (err)
8587 return err;
8588 }
8589
8590 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8591 memcpy(&ibss.ht_capa_mask,
8592 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8593 sizeof(ibss.ht_capa_mask));
8594
8595 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8596 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8597 return -EINVAL;
8598 memcpy(&ibss.ht_capa,
8599 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8600 sizeof(ibss.ht_capa));
8601 }
8602
8603 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8604 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
8605 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8606 return -EINVAL;
8607
8608 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8609 bool no_ht = false;
8610
8611 connkeys = nl80211_parse_connkeys(rdev,
8612 info->attrs[NL80211_ATTR_KEYS],
8613 &no_ht);
8614 if (IS_ERR(connkeys))
8615 return PTR_ERR(connkeys);
8616
8617 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
8618 no_ht) {
8619 kzfree(connkeys);
8620 return -EINVAL;
8621 }
8622 }
8623
8624 ibss.control_port =
8625 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
8626
8627 ibss.userspace_handles_dfs =
8628 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
8629
8630 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
8631 if (err)
8632 kzfree(connkeys);
8633 return err;
8634 }
8635
8636 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
8637 {
8638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8639 struct net_device *dev = info->user_ptr[1];
8640
8641 if (!rdev->ops->leave_ibss)
8642 return -EOPNOTSUPP;
8643
8644 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
8645 return -EOPNOTSUPP;
8646
8647 return cfg80211_leave_ibss(rdev, dev, false);
8648 }
8649
8650 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
8651 {
8652 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8653 struct net_device *dev = info->user_ptr[1];
8654 int mcast_rate[NUM_NL80211_BANDS];
8655 u32 nla_rate;
8656 int err;
8657
8658 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
8659 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
8660 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
8661 return -EOPNOTSUPP;
8662
8663 if (!rdev->ops->set_mcast_rate)
8664 return -EOPNOTSUPP;
8665
8666 memset(mcast_rate, 0, sizeof(mcast_rate));
8667
8668 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
8669 return -EINVAL;
8670
8671 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
8672 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
8673 return -EINVAL;
8674
8675 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
8676
8677 return err;
8678 }
8679
8680 static struct sk_buff *
8681 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
8682 struct wireless_dev *wdev, int approxlen,
8683 u32 portid, u32 seq, enum nl80211_commands cmd,
8684 enum nl80211_attrs attr,
8685 const struct nl80211_vendor_cmd_info *info,
8686 gfp_t gfp)
8687 {
8688 struct sk_buff *skb;
8689 void *hdr;
8690 struct nlattr *data;
8691
8692 skb = nlmsg_new(approxlen + 100, gfp);
8693 if (!skb)
8694 return NULL;
8695
8696 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
8697 if (!hdr) {
8698 kfree_skb(skb);
8699 return NULL;
8700 }
8701
8702 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
8703 goto nla_put_failure;
8704
8705 if (info) {
8706 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
8707 info->vendor_id))
8708 goto nla_put_failure;
8709 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
8710 info->subcmd))
8711 goto nla_put_failure;
8712 }
8713
8714 if (wdev) {
8715 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
8716 wdev_id(wdev), NL80211_ATTR_PAD))
8717 goto nla_put_failure;
8718 if (wdev->netdev &&
8719 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
8720 wdev->netdev->ifindex))
8721 goto nla_put_failure;
8722 }
8723
8724 data = nla_nest_start(skb, attr);
8725 if (!data)
8726 goto nla_put_failure;
8727
8728 ((void **)skb->cb)[0] = rdev;
8729 ((void **)skb->cb)[1] = hdr;
8730 ((void **)skb->cb)[2] = data;
8731
8732 return skb;
8733
8734 nla_put_failure:
8735 kfree_skb(skb);
8736 return NULL;
8737 }
8738
8739 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8740 struct wireless_dev *wdev,
8741 enum nl80211_commands cmd,
8742 enum nl80211_attrs attr,
8743 int vendor_event_idx,
8744 int approxlen, gfp_t gfp)
8745 {
8746 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8747 const struct nl80211_vendor_cmd_info *info;
8748
8749 switch (cmd) {
8750 case NL80211_CMD_TESTMODE:
8751 if (WARN_ON(vendor_event_idx != -1))
8752 return NULL;
8753 info = NULL;
8754 break;
8755 case NL80211_CMD_VENDOR:
8756 if (WARN_ON(vendor_event_idx < 0 ||
8757 vendor_event_idx >= wiphy->n_vendor_events))
8758 return NULL;
8759 info = &wiphy->vendor_events[vendor_event_idx];
8760 break;
8761 default:
8762 WARN_ON(1);
8763 return NULL;
8764 }
8765
8766 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8767 cmd, attr, info, gfp);
8768 }
8769 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8770
8771 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8772 {
8773 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8774 void *hdr = ((void **)skb->cb)[1];
8775 struct nlattr *data = ((void **)skb->cb)[2];
8776 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8777
8778 /* clear CB data for netlink core to own from now on */
8779 memset(skb->cb, 0, sizeof(skb->cb));
8780
8781 nla_nest_end(skb, data);
8782 genlmsg_end(skb, hdr);
8783
8784 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8785 mcgrp = NL80211_MCGRP_VENDOR;
8786
8787 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8788 mcgrp, gfp);
8789 }
8790 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8791
8792 #ifdef CONFIG_NL80211_TESTMODE
8793 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8794 {
8795 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8796 struct wireless_dev *wdev =
8797 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8798 int err;
8799
8800 if (!rdev->ops->testmode_cmd)
8801 return -EOPNOTSUPP;
8802
8803 if (IS_ERR(wdev)) {
8804 err = PTR_ERR(wdev);
8805 if (err != -EINVAL)
8806 return err;
8807 wdev = NULL;
8808 } else if (wdev->wiphy != &rdev->wiphy) {
8809 return -EINVAL;
8810 }
8811
8812 if (!info->attrs[NL80211_ATTR_TESTDATA])
8813 return -EINVAL;
8814
8815 rdev->cur_cmd_info = info;
8816 err = rdev_testmode_cmd(rdev, wdev,
8817 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8818 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8819 rdev->cur_cmd_info = NULL;
8820
8821 return err;
8822 }
8823
8824 static int nl80211_testmode_dump(struct sk_buff *skb,
8825 struct netlink_callback *cb)
8826 {
8827 struct cfg80211_registered_device *rdev;
8828 int err;
8829 long phy_idx;
8830 void *data = NULL;
8831 int data_len = 0;
8832
8833 rtnl_lock();
8834
8835 if (cb->args[0]) {
8836 /*
8837 * 0 is a valid index, but not valid for args[0],
8838 * so we need to offset by 1.
8839 */
8840 phy_idx = cb->args[0] - 1;
8841
8842 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8843 if (!rdev) {
8844 err = -ENOENT;
8845 goto out_err;
8846 }
8847 } else {
8848 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
8849
8850 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8851 attrbuf, nl80211_fam.maxattr,
8852 nl80211_policy, NULL);
8853 if (err)
8854 goto out_err;
8855
8856 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
8857 if (IS_ERR(rdev)) {
8858 err = PTR_ERR(rdev);
8859 goto out_err;
8860 }
8861 phy_idx = rdev->wiphy_idx;
8862
8863 if (attrbuf[NL80211_ATTR_TESTDATA])
8864 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
8865 }
8866
8867 if (cb->args[1]) {
8868 data = nla_data((void *)cb->args[1]);
8869 data_len = nla_len((void *)cb->args[1]);
8870 }
8871
8872 if (!rdev->ops->testmode_dump) {
8873 err = -EOPNOTSUPP;
8874 goto out_err;
8875 }
8876
8877 while (1) {
8878 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8879 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8880 NL80211_CMD_TESTMODE);
8881 struct nlattr *tmdata;
8882
8883 if (!hdr)
8884 break;
8885
8886 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8887 genlmsg_cancel(skb, hdr);
8888 break;
8889 }
8890
8891 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8892 if (!tmdata) {
8893 genlmsg_cancel(skb, hdr);
8894 break;
8895 }
8896 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8897 nla_nest_end(skb, tmdata);
8898
8899 if (err == -ENOBUFS || err == -ENOENT) {
8900 genlmsg_cancel(skb, hdr);
8901 break;
8902 } else if (err) {
8903 genlmsg_cancel(skb, hdr);
8904 goto out_err;
8905 }
8906
8907 genlmsg_end(skb, hdr);
8908 }
8909
8910 err = skb->len;
8911 /* see above */
8912 cb->args[0] = phy_idx + 1;
8913 out_err:
8914 rtnl_unlock();
8915 return err;
8916 }
8917 #endif
8918
8919 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8920 {
8921 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8922 struct net_device *dev = info->user_ptr[1];
8923 struct cfg80211_connect_params connect;
8924 struct wiphy *wiphy;
8925 struct cfg80211_cached_keys *connkeys = NULL;
8926 int err;
8927
8928 memset(&connect, 0, sizeof(connect));
8929
8930 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8931 return -EINVAL;
8932
8933 if (!info->attrs[NL80211_ATTR_SSID] ||
8934 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8935 return -EINVAL;
8936
8937 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8938 connect.auth_type =
8939 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8940 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8941 NL80211_CMD_CONNECT))
8942 return -EINVAL;
8943 } else
8944 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8945
8946 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8947
8948 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
8949 !wiphy_ext_feature_isset(&rdev->wiphy,
8950 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
8951 return -EINVAL;
8952 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
8953
8954 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8955 NL80211_MAX_NR_CIPHER_SUITES);
8956 if (err)
8957 return err;
8958
8959 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8960 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8961 return -EOPNOTSUPP;
8962
8963 wiphy = &rdev->wiphy;
8964
8965 connect.bg_scan_period = -1;
8966 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8967 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8968 connect.bg_scan_period =
8969 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8970 }
8971
8972 if (info->attrs[NL80211_ATTR_MAC])
8973 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8974 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8975 connect.bssid_hint =
8976 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8977 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8978 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8979
8980 if (info->attrs[NL80211_ATTR_IE]) {
8981 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8982 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8983 }
8984
8985 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8986 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8987 if (connect.mfp == NL80211_MFP_OPTIONAL &&
8988 !wiphy_ext_feature_isset(&rdev->wiphy,
8989 NL80211_EXT_FEATURE_MFP_OPTIONAL))
8990 return -EOPNOTSUPP;
8991
8992 if (connect.mfp != NL80211_MFP_REQUIRED &&
8993 connect.mfp != NL80211_MFP_NO &&
8994 connect.mfp != NL80211_MFP_OPTIONAL)
8995 return -EINVAL;
8996 } else {
8997 connect.mfp = NL80211_MFP_NO;
8998 }
8999
9000 if (info->attrs[NL80211_ATTR_PREV_BSSID])
9001 connect.prev_bssid =
9002 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9003
9004 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9005 connect.channel = nl80211_get_valid_chan(
9006 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9007 if (!connect.channel)
9008 return -EINVAL;
9009 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9010 connect.channel_hint = nl80211_get_valid_chan(
9011 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9012 if (!connect.channel_hint)
9013 return -EINVAL;
9014 }
9015
9016 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9017 connkeys = nl80211_parse_connkeys(rdev,
9018 info->attrs[NL80211_ATTR_KEYS], NULL);
9019 if (IS_ERR(connkeys))
9020 return PTR_ERR(connkeys);
9021 }
9022
9023 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9024 connect.flags |= ASSOC_REQ_DISABLE_HT;
9025
9026 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9027 memcpy(&connect.ht_capa_mask,
9028 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9029 sizeof(connect.ht_capa_mask));
9030
9031 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9032 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
9033 kzfree(connkeys);
9034 return -EINVAL;
9035 }
9036 memcpy(&connect.ht_capa,
9037 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9038 sizeof(connect.ht_capa));
9039 }
9040
9041 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9042 connect.flags |= ASSOC_REQ_DISABLE_VHT;
9043
9044 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9045 memcpy(&connect.vht_capa_mask,
9046 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9047 sizeof(connect.vht_capa_mask));
9048
9049 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9050 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
9051 kzfree(connkeys);
9052 return -EINVAL;
9053 }
9054 memcpy(&connect.vht_capa,
9055 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9056 sizeof(connect.vht_capa));
9057 }
9058
9059 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9060 if (!((rdev->wiphy.features &
9061 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9062 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9063 !wiphy_ext_feature_isset(&rdev->wiphy,
9064 NL80211_EXT_FEATURE_RRM)) {
9065 kzfree(connkeys);
9066 return -EINVAL;
9067 }
9068 connect.flags |= ASSOC_REQ_USE_RRM;
9069 }
9070
9071 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
9072 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
9073 kzfree(connkeys);
9074 return -EOPNOTSUPP;
9075 }
9076
9077 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
9078 /* bss selection makes no sense if bssid is set */
9079 if (connect.bssid) {
9080 kzfree(connkeys);
9081 return -EINVAL;
9082 }
9083
9084 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
9085 wiphy, &connect.bss_select);
9086 if (err) {
9087 kzfree(connkeys);
9088 return err;
9089 }
9090 }
9091
9092 if (wiphy_ext_feature_isset(&rdev->wiphy,
9093 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
9094 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
9095 info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
9096 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
9097 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9098 connect.fils_erp_username =
9099 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9100 connect.fils_erp_username_len =
9101 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
9102 connect.fils_erp_realm =
9103 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9104 connect.fils_erp_realm_len =
9105 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
9106 connect.fils_erp_next_seq_num =
9107 nla_get_u16(
9108 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
9109 connect.fils_erp_rrk =
9110 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9111 connect.fils_erp_rrk_len =
9112 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
9113 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
9114 info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
9115 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
9116 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
9117 kzfree(connkeys);
9118 return -EINVAL;
9119 }
9120
9121 wdev_lock(dev->ieee80211_ptr);
9122
9123 err = cfg80211_connect(rdev, dev, &connect, connkeys,
9124 connect.prev_bssid);
9125 if (err)
9126 kzfree(connkeys);
9127
9128 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9129 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9130 if (connect.bssid)
9131 memcpy(dev->ieee80211_ptr->disconnect_bssid,
9132 connect.bssid, ETH_ALEN);
9133 else
9134 memset(dev->ieee80211_ptr->disconnect_bssid,
9135 0, ETH_ALEN);
9136 }
9137
9138 wdev_unlock(dev->ieee80211_ptr);
9139
9140 return err;
9141 }
9142
9143 static int nl80211_update_connect_params(struct sk_buff *skb,
9144 struct genl_info *info)
9145 {
9146 struct cfg80211_connect_params connect = {};
9147 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9148 struct net_device *dev = info->user_ptr[1];
9149 struct wireless_dev *wdev = dev->ieee80211_ptr;
9150 u32 changed = 0;
9151 int ret;
9152
9153 if (!rdev->ops->update_connect_params)
9154 return -EOPNOTSUPP;
9155
9156 if (info->attrs[NL80211_ATTR_IE]) {
9157 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9158 return -EINVAL;
9159 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9160 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9161 changed |= UPDATE_ASSOC_IES;
9162 }
9163
9164 wdev_lock(dev->ieee80211_ptr);
9165 if (!wdev->current_bss)
9166 ret = -ENOLINK;
9167 else
9168 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
9169 wdev_unlock(dev->ieee80211_ptr);
9170
9171 return ret;
9172 }
9173
9174 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
9175 {
9176 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9177 struct net_device *dev = info->user_ptr[1];
9178 u16 reason;
9179 int ret;
9180
9181 if (!info->attrs[NL80211_ATTR_REASON_CODE])
9182 reason = WLAN_REASON_DEAUTH_LEAVING;
9183 else
9184 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9185
9186 if (reason == 0)
9187 return -EINVAL;
9188
9189 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9190 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9191 return -EOPNOTSUPP;
9192
9193 wdev_lock(dev->ieee80211_ptr);
9194 ret = cfg80211_disconnect(rdev, dev, reason, true);
9195 wdev_unlock(dev->ieee80211_ptr);
9196 return ret;
9197 }
9198
9199 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
9200 {
9201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9202 struct net *net;
9203 int err;
9204
9205 if (info->attrs[NL80211_ATTR_PID]) {
9206 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
9207
9208 net = get_net_ns_by_pid(pid);
9209 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
9210 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
9211
9212 net = get_net_ns_by_fd(fd);
9213 } else {
9214 return -EINVAL;
9215 }
9216
9217 if (IS_ERR(net))
9218 return PTR_ERR(net);
9219
9220 err = 0;
9221
9222 /* check if anything to do */
9223 if (!net_eq(wiphy_net(&rdev->wiphy), net))
9224 err = cfg80211_switch_netns(rdev, net);
9225
9226 put_net(net);
9227 return err;
9228 }
9229
9230 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
9231 {
9232 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9233 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
9234 struct cfg80211_pmksa *pmksa) = NULL;
9235 struct net_device *dev = info->user_ptr[1];
9236 struct cfg80211_pmksa pmksa;
9237
9238 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
9239
9240 if (!info->attrs[NL80211_ATTR_PMKID])
9241 return -EINVAL;
9242
9243 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
9244
9245 if (info->attrs[NL80211_ATTR_MAC]) {
9246 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9247 } else if (info->attrs[NL80211_ATTR_SSID] &&
9248 info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
9249 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
9250 info->attrs[NL80211_ATTR_PMK])) {
9251 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9252 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9253 pmksa.cache_id =
9254 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
9255 } else {
9256 return -EINVAL;
9257 }
9258 if (info->attrs[NL80211_ATTR_PMK]) {
9259 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9260 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
9261 }
9262
9263 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9264 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9265 return -EOPNOTSUPP;
9266
9267 switch (info->genlhdr->cmd) {
9268 case NL80211_CMD_SET_PMKSA:
9269 rdev_ops = rdev->ops->set_pmksa;
9270 break;
9271 case NL80211_CMD_DEL_PMKSA:
9272 rdev_ops = rdev->ops->del_pmksa;
9273 break;
9274 default:
9275 WARN_ON(1);
9276 break;
9277 }
9278
9279 if (!rdev_ops)
9280 return -EOPNOTSUPP;
9281
9282 return rdev_ops(&rdev->wiphy, dev, &pmksa);
9283 }
9284
9285 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
9286 {
9287 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9288 struct net_device *dev = info->user_ptr[1];
9289
9290 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9291 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9292 return -EOPNOTSUPP;
9293
9294 if (!rdev->ops->flush_pmksa)
9295 return -EOPNOTSUPP;
9296
9297 return rdev_flush_pmksa(rdev, dev);
9298 }
9299
9300 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
9301 {
9302 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9303 struct net_device *dev = info->user_ptr[1];
9304 u8 action_code, dialog_token;
9305 u32 peer_capability = 0;
9306 u16 status_code;
9307 u8 *peer;
9308 bool initiator;
9309
9310 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9311 !rdev->ops->tdls_mgmt)
9312 return -EOPNOTSUPP;
9313
9314 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
9315 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
9316 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
9317 !info->attrs[NL80211_ATTR_IE] ||
9318 !info->attrs[NL80211_ATTR_MAC])
9319 return -EINVAL;
9320
9321 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9322 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
9323 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
9324 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
9325 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
9326 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
9327 peer_capability =
9328 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
9329
9330 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
9331 dialog_token, status_code, peer_capability,
9332 initiator,
9333 nla_data(info->attrs[NL80211_ATTR_IE]),
9334 nla_len(info->attrs[NL80211_ATTR_IE]));
9335 }
9336
9337 static int nl80211_tdls_oper(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 enum nl80211_tdls_operation operation;
9342 u8 *peer;
9343
9344 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
9345 !rdev->ops->tdls_oper)
9346 return -EOPNOTSUPP;
9347
9348 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
9349 !info->attrs[NL80211_ATTR_MAC])
9350 return -EINVAL;
9351
9352 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
9353 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9354
9355 return rdev_tdls_oper(rdev, dev, peer, operation);
9356 }
9357
9358 static int nl80211_remain_on_channel(struct sk_buff *skb,
9359 struct genl_info *info)
9360 {
9361 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9362 struct wireless_dev *wdev = info->user_ptr[1];
9363 struct cfg80211_chan_def chandef;
9364 const struct cfg80211_chan_def *compat_chandef;
9365 struct sk_buff *msg;
9366 void *hdr;
9367 u64 cookie;
9368 u32 duration;
9369 int err;
9370
9371 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9372 !info->attrs[NL80211_ATTR_DURATION])
9373 return -EINVAL;
9374
9375 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9376
9377 if (!rdev->ops->remain_on_channel ||
9378 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
9379 return -EOPNOTSUPP;
9380
9381 /*
9382 * We should be on that channel for at least a minimum amount of
9383 * time (10ms) but no longer than the driver supports.
9384 */
9385 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9386 duration > rdev->wiphy.max_remain_on_channel_duration)
9387 return -EINVAL;
9388
9389 err = nl80211_parse_chandef(rdev, info, &chandef);
9390 if (err)
9391 return err;
9392
9393 wdev_lock(wdev);
9394 if (!cfg80211_off_channel_oper_allowed(wdev) &&
9395 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
9396 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
9397 &chandef);
9398 if (compat_chandef != &chandef) {
9399 wdev_unlock(wdev);
9400 return -EBUSY;
9401 }
9402 }
9403 wdev_unlock(wdev);
9404
9405 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9406 if (!msg)
9407 return -ENOMEM;
9408
9409 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9410 NL80211_CMD_REMAIN_ON_CHANNEL);
9411 if (!hdr) {
9412 err = -ENOBUFS;
9413 goto free_msg;
9414 }
9415
9416 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
9417 duration, &cookie);
9418
9419 if (err)
9420 goto free_msg;
9421
9422 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9423 NL80211_ATTR_PAD))
9424 goto nla_put_failure;
9425
9426 genlmsg_end(msg, hdr);
9427
9428 return genlmsg_reply(msg, info);
9429
9430 nla_put_failure:
9431 err = -ENOBUFS;
9432 free_msg:
9433 nlmsg_free(msg);
9434 return err;
9435 }
9436
9437 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
9438 struct genl_info *info)
9439 {
9440 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9441 struct wireless_dev *wdev = info->user_ptr[1];
9442 u64 cookie;
9443
9444 if (!info->attrs[NL80211_ATTR_COOKIE])
9445 return -EINVAL;
9446
9447 if (!rdev->ops->cancel_remain_on_channel)
9448 return -EOPNOTSUPP;
9449
9450 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9451
9452 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
9453 }
9454
9455 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
9456 struct genl_info *info)
9457 {
9458 struct cfg80211_bitrate_mask mask;
9459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9460 struct net_device *dev = info->user_ptr[1];
9461 int err;
9462
9463 if (!rdev->ops->set_bitrate_mask)
9464 return -EOPNOTSUPP;
9465
9466 err = nl80211_parse_tx_bitrate_mask(info, &mask);
9467 if (err)
9468 return err;
9469
9470 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
9471 }
9472
9473 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
9474 {
9475 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9476 struct wireless_dev *wdev = info->user_ptr[1];
9477 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
9478
9479 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
9480 return -EINVAL;
9481
9482 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
9483 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
9484
9485 switch (wdev->iftype) {
9486 case NL80211_IFTYPE_STATION:
9487 case NL80211_IFTYPE_ADHOC:
9488 case NL80211_IFTYPE_P2P_CLIENT:
9489 case NL80211_IFTYPE_AP:
9490 case NL80211_IFTYPE_AP_VLAN:
9491 case NL80211_IFTYPE_MESH_POINT:
9492 case NL80211_IFTYPE_P2P_GO:
9493 case NL80211_IFTYPE_P2P_DEVICE:
9494 break;
9495 case NL80211_IFTYPE_NAN:
9496 default:
9497 return -EOPNOTSUPP;
9498 }
9499
9500 /* not much point in registering if we can't reply */
9501 if (!rdev->ops->mgmt_tx)
9502 return -EOPNOTSUPP;
9503
9504 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
9505 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
9506 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
9507 }
9508
9509 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
9510 {
9511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9512 struct wireless_dev *wdev = info->user_ptr[1];
9513 struct cfg80211_chan_def chandef;
9514 int err;
9515 void *hdr = NULL;
9516 u64 cookie;
9517 struct sk_buff *msg = NULL;
9518 struct cfg80211_mgmt_tx_params params = {
9519 .dont_wait_for_ack =
9520 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
9521 };
9522
9523 if (!info->attrs[NL80211_ATTR_FRAME])
9524 return -EINVAL;
9525
9526 if (!rdev->ops->mgmt_tx)
9527 return -EOPNOTSUPP;
9528
9529 switch (wdev->iftype) {
9530 case NL80211_IFTYPE_P2P_DEVICE:
9531 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9532 return -EINVAL;
9533 case NL80211_IFTYPE_STATION:
9534 case NL80211_IFTYPE_ADHOC:
9535 case NL80211_IFTYPE_P2P_CLIENT:
9536 case NL80211_IFTYPE_AP:
9537 case NL80211_IFTYPE_AP_VLAN:
9538 case NL80211_IFTYPE_MESH_POINT:
9539 case NL80211_IFTYPE_P2P_GO:
9540 break;
9541 case NL80211_IFTYPE_NAN:
9542 default:
9543 return -EOPNOTSUPP;
9544 }
9545
9546 if (info->attrs[NL80211_ATTR_DURATION]) {
9547 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9548 return -EINVAL;
9549 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
9550
9551 /*
9552 * We should wait on the channel for at least a minimum amount
9553 * of time (10ms) but no longer than the driver supports.
9554 */
9555 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
9556 params.wait > rdev->wiphy.max_remain_on_channel_duration)
9557 return -EINVAL;
9558 }
9559
9560 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
9561
9562 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
9563 return -EINVAL;
9564
9565 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9566
9567 /* get the channel if any has been specified, otherwise pass NULL to
9568 * the driver. The latter will use the current one
9569 */
9570 chandef.chan = NULL;
9571 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9572 err = nl80211_parse_chandef(rdev, info, &chandef);
9573 if (err)
9574 return err;
9575 }
9576
9577 if (!chandef.chan && params.offchan)
9578 return -EINVAL;
9579
9580 wdev_lock(wdev);
9581 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
9582 wdev_unlock(wdev);
9583 return -EBUSY;
9584 }
9585 wdev_unlock(wdev);
9586
9587 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
9588 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
9589
9590 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
9591 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9592 int i;
9593
9594 if (len % sizeof(u16))
9595 return -EINVAL;
9596
9597 params.n_csa_offsets = len / sizeof(u16);
9598 params.csa_offsets =
9599 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
9600
9601 /* check that all the offsets fit the frame */
9602 for (i = 0; i < params.n_csa_offsets; i++) {
9603 if (params.csa_offsets[i] >= params.len)
9604 return -EINVAL;
9605 }
9606 }
9607
9608 if (!params.dont_wait_for_ack) {
9609 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9610 if (!msg)
9611 return -ENOMEM;
9612
9613 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9614 NL80211_CMD_FRAME);
9615 if (!hdr) {
9616 err = -ENOBUFS;
9617 goto free_msg;
9618 }
9619 }
9620
9621 params.chan = chandef.chan;
9622 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
9623 if (err)
9624 goto free_msg;
9625
9626 if (msg) {
9627 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
9628 NL80211_ATTR_PAD))
9629 goto nla_put_failure;
9630
9631 genlmsg_end(msg, hdr);
9632 return genlmsg_reply(msg, info);
9633 }
9634
9635 return 0;
9636
9637 nla_put_failure:
9638 err = -ENOBUFS;
9639 free_msg:
9640 nlmsg_free(msg);
9641 return err;
9642 }
9643
9644 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9645 {
9646 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9647 struct wireless_dev *wdev = info->user_ptr[1];
9648 u64 cookie;
9649
9650 if (!info->attrs[NL80211_ATTR_COOKIE])
9651 return -EINVAL;
9652
9653 if (!rdev->ops->mgmt_tx_cancel_wait)
9654 return -EOPNOTSUPP;
9655
9656 switch (wdev->iftype) {
9657 case NL80211_IFTYPE_STATION:
9658 case NL80211_IFTYPE_ADHOC:
9659 case NL80211_IFTYPE_P2P_CLIENT:
9660 case NL80211_IFTYPE_AP:
9661 case NL80211_IFTYPE_AP_VLAN:
9662 case NL80211_IFTYPE_P2P_GO:
9663 case NL80211_IFTYPE_P2P_DEVICE:
9664 break;
9665 case NL80211_IFTYPE_NAN:
9666 default:
9667 return -EOPNOTSUPP;
9668 }
9669
9670 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9671
9672 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9673 }
9674
9675 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9676 {
9677 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9678 struct wireless_dev *wdev;
9679 struct net_device *dev = info->user_ptr[1];
9680 u8 ps_state;
9681 bool state;
9682 int err;
9683
9684 if (!info->attrs[NL80211_ATTR_PS_STATE])
9685 return -EINVAL;
9686
9687 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9688
9689 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9690 return -EINVAL;
9691
9692 wdev = dev->ieee80211_ptr;
9693
9694 if (!rdev->ops->set_power_mgmt)
9695 return -EOPNOTSUPP;
9696
9697 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9698
9699 if (state == wdev->ps)
9700 return 0;
9701
9702 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9703 if (!err)
9704 wdev->ps = state;
9705 return err;
9706 }
9707
9708 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9709 {
9710 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9711 enum nl80211_ps_state ps_state;
9712 struct wireless_dev *wdev;
9713 struct net_device *dev = info->user_ptr[1];
9714 struct sk_buff *msg;
9715 void *hdr;
9716 int err;
9717
9718 wdev = dev->ieee80211_ptr;
9719
9720 if (!rdev->ops->set_power_mgmt)
9721 return -EOPNOTSUPP;
9722
9723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9724 if (!msg)
9725 return -ENOMEM;
9726
9727 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9728 NL80211_CMD_GET_POWER_SAVE);
9729 if (!hdr) {
9730 err = -ENOBUFS;
9731 goto free_msg;
9732 }
9733
9734 if (wdev->ps)
9735 ps_state = NL80211_PS_ENABLED;
9736 else
9737 ps_state = NL80211_PS_DISABLED;
9738
9739 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9740 goto nla_put_failure;
9741
9742 genlmsg_end(msg, hdr);
9743 return genlmsg_reply(msg, info);
9744
9745 nla_put_failure:
9746 err = -ENOBUFS;
9747 free_msg:
9748 nlmsg_free(msg);
9749 return err;
9750 }
9751
9752 static const struct nla_policy
9753 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9754 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
9755 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9756 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9757 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9758 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9759 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9760 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
9761 };
9762
9763 static int nl80211_set_cqm_txe(struct genl_info *info,
9764 u32 rate, u32 pkts, u32 intvl)
9765 {
9766 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9767 struct net_device *dev = info->user_ptr[1];
9768 struct wireless_dev *wdev = dev->ieee80211_ptr;
9769
9770 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9771 return -EINVAL;
9772
9773 if (!rdev->ops->set_cqm_txe_config)
9774 return -EOPNOTSUPP;
9775
9776 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9777 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9778 return -EOPNOTSUPP;
9779
9780 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9781 }
9782
9783 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
9784 struct net_device *dev)
9785 {
9786 struct wireless_dev *wdev = dev->ieee80211_ptr;
9787 s32 last, low, high;
9788 u32 hyst;
9789 int i, n, low_index;
9790 int err;
9791
9792 /* RSSI reporting disabled? */
9793 if (!wdev->cqm_config)
9794 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
9795
9796 /*
9797 * Obtain current RSSI value if possible, if not and no RSSI threshold
9798 * event has been received yet, we should receive an event after a
9799 * connection is established and enough beacons received to calculate
9800 * the average.
9801 */
9802 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
9803 rdev->ops->get_station) {
9804 struct station_info sinfo = {};
9805 u8 *mac_addr;
9806
9807 mac_addr = wdev->current_bss->pub.bssid;
9808
9809 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
9810 if (err)
9811 return err;
9812
9813 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
9814 wdev->cqm_config->last_rssi_event_value =
9815 (s8) sinfo.rx_beacon_signal_avg;
9816 }
9817
9818 last = wdev->cqm_config->last_rssi_event_value;
9819 hyst = wdev->cqm_config->rssi_hyst;
9820 n = wdev->cqm_config->n_rssi_thresholds;
9821
9822 for (i = 0; i < n; i++)
9823 if (last < wdev->cqm_config->rssi_thresholds[i])
9824 break;
9825
9826 low_index = i - 1;
9827 if (low_index >= 0) {
9828 low_index = array_index_nospec(low_index, n);
9829 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
9830 } else {
9831 low = S32_MIN;
9832 }
9833 if (i < n) {
9834 i = array_index_nospec(i, n);
9835 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
9836 } else {
9837 high = S32_MAX;
9838 }
9839
9840 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
9841 }
9842
9843 static int nl80211_set_cqm_rssi(struct genl_info *info,
9844 const s32 *thresholds, int n_thresholds,
9845 u32 hysteresis)
9846 {
9847 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9848 struct net_device *dev = info->user_ptr[1];
9849 struct wireless_dev *wdev = dev->ieee80211_ptr;
9850 int i, err;
9851 s32 prev = S32_MIN;
9852
9853 /* Check all values negative and sorted */
9854 for (i = 0; i < n_thresholds; i++) {
9855 if (thresholds[i] > 0 || thresholds[i] <= prev)
9856 return -EINVAL;
9857
9858 prev = thresholds[i];
9859 }
9860
9861 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9862 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9863 return -EOPNOTSUPP;
9864
9865 wdev_lock(wdev);
9866 cfg80211_cqm_config_free(wdev);
9867 wdev_unlock(wdev);
9868
9869 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
9870 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
9871 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
9872
9873 return rdev_set_cqm_rssi_config(rdev, dev,
9874 thresholds[0], hysteresis);
9875 }
9876
9877 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9878 NL80211_EXT_FEATURE_CQM_RSSI_LIST))
9879 return -EOPNOTSUPP;
9880
9881 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
9882 n_thresholds = 0;
9883
9884 wdev_lock(wdev);
9885 if (n_thresholds) {
9886 struct cfg80211_cqm_config *cqm_config;
9887
9888 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
9889 n_thresholds * sizeof(s32), GFP_KERNEL);
9890 if (!cqm_config) {
9891 err = -ENOMEM;
9892 goto unlock;
9893 }
9894
9895 cqm_config->rssi_hyst = hysteresis;
9896 cqm_config->n_rssi_thresholds = n_thresholds;
9897 memcpy(cqm_config->rssi_thresholds, thresholds,
9898 n_thresholds * sizeof(s32));
9899
9900 wdev->cqm_config = cqm_config;
9901 }
9902
9903 err = cfg80211_cqm_rssi_update(rdev, dev);
9904
9905 unlock:
9906 wdev_unlock(wdev);
9907
9908 return err;
9909 }
9910
9911 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9912 {
9913 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9914 struct nlattr *cqm;
9915 int err;
9916
9917 cqm = info->attrs[NL80211_ATTR_CQM];
9918 if (!cqm)
9919 return -EINVAL;
9920
9921 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9922 nl80211_attr_cqm_policy, info->extack);
9923 if (err)
9924 return err;
9925
9926 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9927 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9928 const s32 *thresholds =
9929 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9930 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9931 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9932
9933 if (len % 4)
9934 return -EINVAL;
9935
9936 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
9937 hysteresis);
9938 }
9939
9940 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9941 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9942 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9943 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9944 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9945 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9946
9947 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9948 }
9949
9950 return -EINVAL;
9951 }
9952
9953 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9954 {
9955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9956 struct net_device *dev = info->user_ptr[1];
9957 struct ocb_setup setup = {};
9958 int err;
9959
9960 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9961 if (err)
9962 return err;
9963
9964 return cfg80211_join_ocb(rdev, dev, &setup);
9965 }
9966
9967 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9968 {
9969 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9970 struct net_device *dev = info->user_ptr[1];
9971
9972 return cfg80211_leave_ocb(rdev, dev);
9973 }
9974
9975 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9976 {
9977 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9978 struct net_device *dev = info->user_ptr[1];
9979 struct mesh_config cfg;
9980 struct mesh_setup setup;
9981 int err;
9982
9983 /* start with default */
9984 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9985 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9986
9987 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9988 /* and parse parameters if given */
9989 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9990 if (err)
9991 return err;
9992 }
9993
9994 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9995 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9996 return -EINVAL;
9997
9998 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9999 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
10000
10001 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10002 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
10003 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10004 return -EINVAL;
10005
10006 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
10007 setup.beacon_interval =
10008 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10009
10010 err = cfg80211_validate_beacon_int(rdev,
10011 NL80211_IFTYPE_MESH_POINT,
10012 setup.beacon_interval);
10013 if (err)
10014 return err;
10015 }
10016
10017 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
10018 setup.dtim_period =
10019 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
10020 if (setup.dtim_period < 1 || setup.dtim_period > 100)
10021 return -EINVAL;
10022 }
10023
10024 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
10025 /* parse additional setup parameters if given */
10026 err = nl80211_parse_mesh_setup(info, &setup);
10027 if (err)
10028 return err;
10029 }
10030
10031 if (setup.user_mpm)
10032 cfg.auto_open_plinks = false;
10033
10034 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10035 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
10036 if (err)
10037 return err;
10038 } else {
10039 /* cfg80211_join_mesh() will sort it out */
10040 setup.chandef.chan = NULL;
10041 }
10042
10043 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10044 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10045 int n_rates =
10046 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10047 struct ieee80211_supported_band *sband;
10048
10049 if (!setup.chandef.chan)
10050 return -EINVAL;
10051
10052 sband = rdev->wiphy.bands[setup.chandef.chan->band];
10053
10054 err = ieee80211_get_ratemask(sband, rates, n_rates,
10055 &setup.basic_rates);
10056 if (err)
10057 return err;
10058 }
10059
10060 if (info->attrs[NL80211_ATTR_TX_RATES]) {
10061 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
10062 if (err)
10063 return err;
10064
10065 if (!setup.chandef.chan)
10066 return -EINVAL;
10067
10068 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
10069 &setup.beacon_rate);
10070 if (err)
10071 return err;
10072 }
10073
10074 setup.userspace_handles_dfs =
10075 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10076
10077 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
10078 }
10079
10080 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
10081 {
10082 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10083 struct net_device *dev = info->user_ptr[1];
10084
10085 return cfg80211_leave_mesh(rdev, dev);
10086 }
10087
10088 #ifdef CONFIG_PM
10089 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
10090 struct cfg80211_registered_device *rdev)
10091 {
10092 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
10093 struct nlattr *nl_pats, *nl_pat;
10094 int i, pat_len;
10095
10096 if (!wowlan->n_patterns)
10097 return 0;
10098
10099 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
10100 if (!nl_pats)
10101 return -ENOBUFS;
10102
10103 for (i = 0; i < wowlan->n_patterns; i++) {
10104 nl_pat = nla_nest_start(msg, i + 1);
10105 if (!nl_pat)
10106 return -ENOBUFS;
10107 pat_len = wowlan->patterns[i].pattern_len;
10108 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
10109 wowlan->patterns[i].mask) ||
10110 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10111 wowlan->patterns[i].pattern) ||
10112 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10113 wowlan->patterns[i].pkt_offset))
10114 return -ENOBUFS;
10115 nla_nest_end(msg, nl_pat);
10116 }
10117 nla_nest_end(msg, nl_pats);
10118
10119 return 0;
10120 }
10121
10122 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
10123 struct cfg80211_wowlan_tcp *tcp)
10124 {
10125 struct nlattr *nl_tcp;
10126
10127 if (!tcp)
10128 return 0;
10129
10130 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
10131 if (!nl_tcp)
10132 return -ENOBUFS;
10133
10134 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
10135 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
10136 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
10137 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
10138 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
10139 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
10140 tcp->payload_len, tcp->payload) ||
10141 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
10142 tcp->data_interval) ||
10143 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
10144 tcp->wake_len, tcp->wake_data) ||
10145 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
10146 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
10147 return -ENOBUFS;
10148
10149 if (tcp->payload_seq.len &&
10150 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
10151 sizeof(tcp->payload_seq), &tcp->payload_seq))
10152 return -ENOBUFS;
10153
10154 if (tcp->payload_tok.len &&
10155 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
10156 sizeof(tcp->payload_tok) + tcp->tokens_size,
10157 &tcp->payload_tok))
10158 return -ENOBUFS;
10159
10160 nla_nest_end(msg, nl_tcp);
10161
10162 return 0;
10163 }
10164
10165 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
10166 struct cfg80211_sched_scan_request *req)
10167 {
10168 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
10169 int i;
10170
10171 if (!req)
10172 return 0;
10173
10174 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
10175 if (!nd)
10176 return -ENOBUFS;
10177
10178 if (req->n_scan_plans == 1 &&
10179 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
10180 req->scan_plans[0].interval * 1000))
10181 return -ENOBUFS;
10182
10183 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
10184 return -ENOBUFS;
10185
10186 if (req->relative_rssi_set) {
10187 struct nl80211_bss_select_rssi_adjust rssi_adjust;
10188
10189 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
10190 req->relative_rssi))
10191 return -ENOBUFS;
10192
10193 rssi_adjust.band = req->rssi_adjust.band;
10194 rssi_adjust.delta = req->rssi_adjust.delta;
10195 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
10196 sizeof(rssi_adjust), &rssi_adjust))
10197 return -ENOBUFS;
10198 }
10199
10200 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10201 if (!freqs)
10202 return -ENOBUFS;
10203
10204 for (i = 0; i < req->n_channels; i++) {
10205 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10206 return -ENOBUFS;
10207 }
10208
10209 nla_nest_end(msg, freqs);
10210
10211 if (req->n_match_sets) {
10212 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
10213 if (!matches)
10214 return -ENOBUFS;
10215
10216 for (i = 0; i < req->n_match_sets; i++) {
10217 match = nla_nest_start(msg, i);
10218 if (!match)
10219 return -ENOBUFS;
10220
10221 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
10222 req->match_sets[i].ssid.ssid_len,
10223 req->match_sets[i].ssid.ssid))
10224 return -ENOBUFS;
10225 nla_nest_end(msg, match);
10226 }
10227 nla_nest_end(msg, matches);
10228 }
10229
10230 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
10231 if (!scan_plans)
10232 return -ENOBUFS;
10233
10234 for (i = 0; i < req->n_scan_plans; i++) {
10235 scan_plan = nla_nest_start(msg, i + 1);
10236 if (!scan_plan)
10237 return -ENOBUFS;
10238
10239 if (!scan_plan ||
10240 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
10241 req->scan_plans[i].interval) ||
10242 (req->scan_plans[i].iterations &&
10243 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
10244 req->scan_plans[i].iterations)))
10245 return -ENOBUFS;
10246 nla_nest_end(msg, scan_plan);
10247 }
10248 nla_nest_end(msg, scan_plans);
10249
10250 nla_nest_end(msg, nd);
10251
10252 return 0;
10253 }
10254
10255 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
10256 {
10257 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10258 struct sk_buff *msg;
10259 void *hdr;
10260 u32 size = NLMSG_DEFAULT_SIZE;
10261
10262 if (!rdev->wiphy.wowlan)
10263 return -EOPNOTSUPP;
10264
10265 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
10266 /* adjust size to have room for all the data */
10267 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
10268 rdev->wiphy.wowlan_config->tcp->payload_len +
10269 rdev->wiphy.wowlan_config->tcp->wake_len +
10270 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
10271 }
10272
10273 msg = nlmsg_new(size, GFP_KERNEL);
10274 if (!msg)
10275 return -ENOMEM;
10276
10277 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10278 NL80211_CMD_GET_WOWLAN);
10279 if (!hdr)
10280 goto nla_put_failure;
10281
10282 if (rdev->wiphy.wowlan_config) {
10283 struct nlattr *nl_wowlan;
10284
10285 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10286 if (!nl_wowlan)
10287 goto nla_put_failure;
10288
10289 if ((rdev->wiphy.wowlan_config->any &&
10290 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
10291 (rdev->wiphy.wowlan_config->disconnect &&
10292 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
10293 (rdev->wiphy.wowlan_config->magic_pkt &&
10294 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
10295 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
10296 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
10297 (rdev->wiphy.wowlan_config->eap_identity_req &&
10298 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
10299 (rdev->wiphy.wowlan_config->four_way_handshake &&
10300 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
10301 (rdev->wiphy.wowlan_config->rfkill_release &&
10302 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
10303 goto nla_put_failure;
10304
10305 if (nl80211_send_wowlan_patterns(msg, rdev))
10306 goto nla_put_failure;
10307
10308 if (nl80211_send_wowlan_tcp(msg,
10309 rdev->wiphy.wowlan_config->tcp))
10310 goto nla_put_failure;
10311
10312 if (nl80211_send_wowlan_nd(
10313 msg,
10314 rdev->wiphy.wowlan_config->nd_config))
10315 goto nla_put_failure;
10316
10317 nla_nest_end(msg, nl_wowlan);
10318 }
10319
10320 genlmsg_end(msg, hdr);
10321 return genlmsg_reply(msg, info);
10322
10323 nla_put_failure:
10324 nlmsg_free(msg);
10325 return -ENOBUFS;
10326 }
10327
10328 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
10329 struct nlattr *attr,
10330 struct cfg80211_wowlan *trig)
10331 {
10332 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
10333 struct cfg80211_wowlan_tcp *cfg;
10334 struct nl80211_wowlan_tcp_data_token *tok = NULL;
10335 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
10336 u32 size;
10337 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
10338 int err, port;
10339
10340 if (!rdev->wiphy.wowlan->tcp)
10341 return -EINVAL;
10342
10343 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr,
10344 nl80211_wowlan_tcp_policy, NULL);
10345 if (err)
10346 return err;
10347
10348 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
10349 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
10350 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
10351 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
10352 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
10353 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
10354 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
10355 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
10356 return -EINVAL;
10357
10358 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
10359 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
10360 return -EINVAL;
10361
10362 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
10363 rdev->wiphy.wowlan->tcp->data_interval_max ||
10364 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
10365 return -EINVAL;
10366
10367 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
10368 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
10369 return -EINVAL;
10370
10371 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
10372 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
10373 return -EINVAL;
10374
10375 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
10376 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10377
10378 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
10379 tokens_size = tokln - sizeof(*tok);
10380
10381 if (!tok->len || tokens_size % tok->len)
10382 return -EINVAL;
10383 if (!rdev->wiphy.wowlan->tcp->tok)
10384 return -EINVAL;
10385 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
10386 return -EINVAL;
10387 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
10388 return -EINVAL;
10389 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
10390 return -EINVAL;
10391 if (tok->offset + tok->len > data_size)
10392 return -EINVAL;
10393 }
10394
10395 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
10396 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
10397 if (!rdev->wiphy.wowlan->tcp->seq)
10398 return -EINVAL;
10399 if (seq->len == 0 || seq->len > 4)
10400 return -EINVAL;
10401 if (seq->len + seq->offset > data_size)
10402 return -EINVAL;
10403 }
10404
10405 size = sizeof(*cfg);
10406 size += data_size;
10407 size += wake_size + wake_mask_size;
10408 size += tokens_size;
10409
10410 cfg = kzalloc(size, GFP_KERNEL);
10411 if (!cfg)
10412 return -ENOMEM;
10413 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
10414 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
10415 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
10416 ETH_ALEN);
10417 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
10418 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
10419 else
10420 port = 0;
10421 #ifdef CONFIG_INET
10422 /* allocate a socket and port for it and use it */
10423 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
10424 IPPROTO_TCP, &cfg->sock, 1);
10425 if (err) {
10426 kfree(cfg);
10427 return err;
10428 }
10429 if (inet_csk_get_port(cfg->sock->sk, port)) {
10430 sock_release(cfg->sock);
10431 kfree(cfg);
10432 return -EADDRINUSE;
10433 }
10434 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
10435 #else
10436 if (!port) {
10437 kfree(cfg);
10438 return -EINVAL;
10439 }
10440 cfg->src_port = port;
10441 #endif
10442
10443 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
10444 cfg->payload_len = data_size;
10445 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
10446 memcpy((void *)cfg->payload,
10447 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
10448 data_size);
10449 if (seq)
10450 cfg->payload_seq = *seq;
10451 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
10452 cfg->wake_len = wake_size;
10453 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
10454 memcpy((void *)cfg->wake_data,
10455 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
10456 wake_size);
10457 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
10458 data_size + wake_size;
10459 memcpy((void *)cfg->wake_mask,
10460 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
10461 wake_mask_size);
10462 if (tok) {
10463 cfg->tokens_size = tokens_size;
10464 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
10465 }
10466
10467 trig->tcp = cfg;
10468
10469 return 0;
10470 }
10471
10472 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
10473 const struct wiphy_wowlan_support *wowlan,
10474 struct nlattr *attr,
10475 struct cfg80211_wowlan *trig)
10476 {
10477 struct nlattr **tb;
10478 int err;
10479
10480 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
10481 if (!tb)
10482 return -ENOMEM;
10483
10484 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
10485 err = -EOPNOTSUPP;
10486 goto out;
10487 }
10488
10489 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy,
10490 NULL);
10491 if (err)
10492 goto out;
10493
10494 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
10495 wowlan->max_nd_match_sets);
10496 err = PTR_ERR_OR_ZERO(trig->nd_config);
10497 if (err)
10498 trig->nd_config = NULL;
10499
10500 out:
10501 kfree(tb);
10502 return err;
10503 }
10504
10505 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
10506 {
10507 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10508 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
10509 struct cfg80211_wowlan new_triggers = {};
10510 struct cfg80211_wowlan *ntrig;
10511 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
10512 int err, i;
10513 bool prev_enabled = rdev->wiphy.wowlan_config;
10514 bool regular = false;
10515
10516 if (!wowlan)
10517 return -EOPNOTSUPP;
10518
10519 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
10520 cfg80211_rdev_free_wowlan(rdev);
10521 rdev->wiphy.wowlan_config = NULL;
10522 goto set_wakeup;
10523 }
10524
10525 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG,
10526 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
10527 nl80211_wowlan_policy, info->extack);
10528 if (err)
10529 return err;
10530
10531 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
10532 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
10533 return -EINVAL;
10534 new_triggers.any = true;
10535 }
10536
10537 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
10538 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
10539 return -EINVAL;
10540 new_triggers.disconnect = true;
10541 regular = true;
10542 }
10543
10544 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
10545 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
10546 return -EINVAL;
10547 new_triggers.magic_pkt = true;
10548 regular = true;
10549 }
10550
10551 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
10552 return -EINVAL;
10553
10554 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
10555 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
10556 return -EINVAL;
10557 new_triggers.gtk_rekey_failure = true;
10558 regular = true;
10559 }
10560
10561 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
10562 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
10563 return -EINVAL;
10564 new_triggers.eap_identity_req = true;
10565 regular = true;
10566 }
10567
10568 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
10569 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
10570 return -EINVAL;
10571 new_triggers.four_way_handshake = true;
10572 regular = true;
10573 }
10574
10575 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
10576 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
10577 return -EINVAL;
10578 new_triggers.rfkill_release = true;
10579 regular = true;
10580 }
10581
10582 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
10583 struct nlattr *pat;
10584 int n_patterns = 0;
10585 int rem, pat_len, mask_len, pkt_offset;
10586 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10587
10588 regular = true;
10589
10590 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10591 rem)
10592 n_patterns++;
10593 if (n_patterns > wowlan->n_patterns)
10594 return -EINVAL;
10595
10596 new_triggers.patterns = kcalloc(n_patterns,
10597 sizeof(new_triggers.patterns[0]),
10598 GFP_KERNEL);
10599 if (!new_triggers.patterns)
10600 return -ENOMEM;
10601
10602 new_triggers.n_patterns = n_patterns;
10603 i = 0;
10604
10605 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
10606 rem) {
10607 u8 *mask_pat;
10608
10609 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10610 nl80211_packet_pattern_policy,
10611 info->extack);
10612 if (err)
10613 goto error;
10614
10615 err = -EINVAL;
10616 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10617 !pat_tb[NL80211_PKTPAT_PATTERN])
10618 goto error;
10619 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10620 mask_len = DIV_ROUND_UP(pat_len, 8);
10621 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10622 goto error;
10623 if (pat_len > wowlan->pattern_max_len ||
10624 pat_len < wowlan->pattern_min_len)
10625 goto error;
10626
10627 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10628 pkt_offset = 0;
10629 else
10630 pkt_offset = nla_get_u32(
10631 pat_tb[NL80211_PKTPAT_OFFSET]);
10632 if (pkt_offset > wowlan->max_pkt_offset)
10633 goto error;
10634 new_triggers.patterns[i].pkt_offset = pkt_offset;
10635
10636 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10637 if (!mask_pat) {
10638 err = -ENOMEM;
10639 goto error;
10640 }
10641 new_triggers.patterns[i].mask = mask_pat;
10642 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10643 mask_len);
10644 mask_pat += mask_len;
10645 new_triggers.patterns[i].pattern = mask_pat;
10646 new_triggers.patterns[i].pattern_len = pat_len;
10647 memcpy(mask_pat,
10648 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10649 pat_len);
10650 i++;
10651 }
10652 }
10653
10654 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
10655 regular = true;
10656 err = nl80211_parse_wowlan_tcp(
10657 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
10658 &new_triggers);
10659 if (err)
10660 goto error;
10661 }
10662
10663 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
10664 regular = true;
10665 err = nl80211_parse_wowlan_nd(
10666 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
10667 &new_triggers);
10668 if (err)
10669 goto error;
10670 }
10671
10672 /* The 'any' trigger means the device continues operating more or less
10673 * as in its normal operation mode and wakes up the host on most of the
10674 * normal interrupts (like packet RX, ...)
10675 * It therefore makes little sense to combine with the more constrained
10676 * wakeup trigger modes.
10677 */
10678 if (new_triggers.any && regular) {
10679 err = -EINVAL;
10680 goto error;
10681 }
10682
10683 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
10684 if (!ntrig) {
10685 err = -ENOMEM;
10686 goto error;
10687 }
10688 cfg80211_rdev_free_wowlan(rdev);
10689 rdev->wiphy.wowlan_config = ntrig;
10690
10691 set_wakeup:
10692 if (rdev->ops->set_wakeup &&
10693 prev_enabled != !!rdev->wiphy.wowlan_config)
10694 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
10695
10696 return 0;
10697 error:
10698 for (i = 0; i < new_triggers.n_patterns; i++)
10699 kfree(new_triggers.patterns[i].mask);
10700 kfree(new_triggers.patterns);
10701 if (new_triggers.tcp && new_triggers.tcp->sock)
10702 sock_release(new_triggers.tcp->sock);
10703 kfree(new_triggers.tcp);
10704 kfree(new_triggers.nd_config);
10705 return err;
10706 }
10707 #endif
10708
10709 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
10710 struct cfg80211_registered_device *rdev)
10711 {
10712 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
10713 int i, j, pat_len;
10714 struct cfg80211_coalesce_rules *rule;
10715
10716 if (!rdev->coalesce->n_rules)
10717 return 0;
10718
10719 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
10720 if (!nl_rules)
10721 return -ENOBUFS;
10722
10723 for (i = 0; i < rdev->coalesce->n_rules; i++) {
10724 nl_rule = nla_nest_start(msg, i + 1);
10725 if (!nl_rule)
10726 return -ENOBUFS;
10727
10728 rule = &rdev->coalesce->rules[i];
10729 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
10730 rule->delay))
10731 return -ENOBUFS;
10732
10733 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
10734 rule->condition))
10735 return -ENOBUFS;
10736
10737 nl_pats = nla_nest_start(msg,
10738 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
10739 if (!nl_pats)
10740 return -ENOBUFS;
10741
10742 for (j = 0; j < rule->n_patterns; j++) {
10743 nl_pat = nla_nest_start(msg, j + 1);
10744 if (!nl_pat)
10745 return -ENOBUFS;
10746 pat_len = rule->patterns[j].pattern_len;
10747 if (nla_put(msg, NL80211_PKTPAT_MASK,
10748 DIV_ROUND_UP(pat_len, 8),
10749 rule->patterns[j].mask) ||
10750 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
10751 rule->patterns[j].pattern) ||
10752 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
10753 rule->patterns[j].pkt_offset))
10754 return -ENOBUFS;
10755 nla_nest_end(msg, nl_pat);
10756 }
10757 nla_nest_end(msg, nl_pats);
10758 nla_nest_end(msg, nl_rule);
10759 }
10760 nla_nest_end(msg, nl_rules);
10761
10762 return 0;
10763 }
10764
10765 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
10766 {
10767 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10768 struct sk_buff *msg;
10769 void *hdr;
10770
10771 if (!rdev->wiphy.coalesce)
10772 return -EOPNOTSUPP;
10773
10774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10775 if (!msg)
10776 return -ENOMEM;
10777
10778 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10779 NL80211_CMD_GET_COALESCE);
10780 if (!hdr)
10781 goto nla_put_failure;
10782
10783 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
10784 goto nla_put_failure;
10785
10786 genlmsg_end(msg, hdr);
10787 return genlmsg_reply(msg, info);
10788
10789 nla_put_failure:
10790 nlmsg_free(msg);
10791 return -ENOBUFS;
10792 }
10793
10794 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
10795 {
10796 struct cfg80211_coalesce *coalesce = rdev->coalesce;
10797 int i, j;
10798 struct cfg80211_coalesce_rules *rule;
10799
10800 if (!coalesce)
10801 return;
10802
10803 for (i = 0; i < coalesce->n_rules; i++) {
10804 rule = &coalesce->rules[i];
10805 for (j = 0; j < rule->n_patterns; j++)
10806 kfree(rule->patterns[j].mask);
10807 kfree(rule->patterns);
10808 }
10809 kfree(coalesce->rules);
10810 kfree(coalesce);
10811 rdev->coalesce = NULL;
10812 }
10813
10814 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10815 struct nlattr *rule,
10816 struct cfg80211_coalesce_rules *new_rule)
10817 {
10818 int err, i;
10819 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10820 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10821 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10822 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10823
10824 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule,
10825 nl80211_coalesce_policy, NULL);
10826 if (err)
10827 return err;
10828
10829 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10830 new_rule->delay =
10831 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10832 if (new_rule->delay > coalesce->max_delay)
10833 return -EINVAL;
10834
10835 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10836 new_rule->condition =
10837 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10838 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10839 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10840 return -EINVAL;
10841
10842 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10843 return -EINVAL;
10844
10845 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10846 rem)
10847 n_patterns++;
10848 if (n_patterns > coalesce->n_patterns)
10849 return -EINVAL;
10850
10851 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10852 GFP_KERNEL);
10853 if (!new_rule->patterns)
10854 return -ENOMEM;
10855
10856 new_rule->n_patterns = n_patterns;
10857 i = 0;
10858
10859 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10860 rem) {
10861 u8 *mask_pat;
10862
10863 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat,
10864 nl80211_packet_pattern_policy, NULL);
10865 if (err)
10866 return err;
10867
10868 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10869 !pat_tb[NL80211_PKTPAT_PATTERN])
10870 return -EINVAL;
10871 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10872 mask_len = DIV_ROUND_UP(pat_len, 8);
10873 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10874 return -EINVAL;
10875 if (pat_len > coalesce->pattern_max_len ||
10876 pat_len < coalesce->pattern_min_len)
10877 return -EINVAL;
10878
10879 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10880 pkt_offset = 0;
10881 else
10882 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10883 if (pkt_offset > coalesce->max_pkt_offset)
10884 return -EINVAL;
10885 new_rule->patterns[i].pkt_offset = pkt_offset;
10886
10887 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10888 if (!mask_pat)
10889 return -ENOMEM;
10890
10891 new_rule->patterns[i].mask = mask_pat;
10892 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10893 mask_len);
10894
10895 mask_pat += mask_len;
10896 new_rule->patterns[i].pattern = mask_pat;
10897 new_rule->patterns[i].pattern_len = pat_len;
10898 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10899 pat_len);
10900 i++;
10901 }
10902
10903 return 0;
10904 }
10905
10906 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10907 {
10908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10909 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10910 struct cfg80211_coalesce new_coalesce = {};
10911 struct cfg80211_coalesce *n_coalesce;
10912 int err, rem_rule, n_rules = 0, i, j;
10913 struct nlattr *rule;
10914 struct cfg80211_coalesce_rules *tmp_rule;
10915
10916 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10917 return -EOPNOTSUPP;
10918
10919 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10920 cfg80211_rdev_free_coalesce(rdev);
10921 rdev_set_coalesce(rdev, NULL);
10922 return 0;
10923 }
10924
10925 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10926 rem_rule)
10927 n_rules++;
10928 if (n_rules > coalesce->n_rules)
10929 return -EINVAL;
10930
10931 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10932 GFP_KERNEL);
10933 if (!new_coalesce.rules)
10934 return -ENOMEM;
10935
10936 new_coalesce.n_rules = n_rules;
10937 i = 0;
10938
10939 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10940 rem_rule) {
10941 err = nl80211_parse_coalesce_rule(rdev, rule,
10942 &new_coalesce.rules[i]);
10943 if (err)
10944 goto error;
10945
10946 i++;
10947 }
10948
10949 err = rdev_set_coalesce(rdev, &new_coalesce);
10950 if (err)
10951 goto error;
10952
10953 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10954 if (!n_coalesce) {
10955 err = -ENOMEM;
10956 goto error;
10957 }
10958 cfg80211_rdev_free_coalesce(rdev);
10959 rdev->coalesce = n_coalesce;
10960
10961 return 0;
10962 error:
10963 for (i = 0; i < new_coalesce.n_rules; i++) {
10964 tmp_rule = &new_coalesce.rules[i];
10965 for (j = 0; j < tmp_rule->n_patterns; j++)
10966 kfree(tmp_rule->patterns[j].mask);
10967 kfree(tmp_rule->patterns);
10968 }
10969 kfree(new_coalesce.rules);
10970
10971 return err;
10972 }
10973
10974 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10975 {
10976 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10977 struct net_device *dev = info->user_ptr[1];
10978 struct wireless_dev *wdev = dev->ieee80211_ptr;
10979 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10980 struct cfg80211_gtk_rekey_data rekey_data;
10981 int err;
10982
10983 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10984 return -EINVAL;
10985
10986 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA,
10987 info->attrs[NL80211_ATTR_REKEY_DATA],
10988 nl80211_rekey_policy, info->extack);
10989 if (err)
10990 return err;
10991
10992 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
10993 !tb[NL80211_REKEY_DATA_KCK])
10994 return -EINVAL;
10995 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10996 return -ERANGE;
10997 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10998 return -ERANGE;
10999 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
11000 return -ERANGE;
11001
11002 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
11003 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
11004 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
11005
11006 wdev_lock(wdev);
11007 if (!wdev->current_bss) {
11008 err = -ENOTCONN;
11009 goto out;
11010 }
11011
11012 if (!rdev->ops->set_rekey_data) {
11013 err = -EOPNOTSUPP;
11014 goto out;
11015 }
11016
11017 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
11018 out:
11019 wdev_unlock(wdev);
11020 return err;
11021 }
11022
11023 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
11024 struct genl_info *info)
11025 {
11026 struct net_device *dev = info->user_ptr[1];
11027 struct wireless_dev *wdev = dev->ieee80211_ptr;
11028
11029 if (wdev->iftype != NL80211_IFTYPE_AP &&
11030 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11031 return -EINVAL;
11032
11033 if (wdev->ap_unexpected_nlportid)
11034 return -EBUSY;
11035
11036 wdev->ap_unexpected_nlportid = info->snd_portid;
11037 return 0;
11038 }
11039
11040 static int nl80211_probe_client(struct sk_buff *skb,
11041 struct genl_info *info)
11042 {
11043 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11044 struct net_device *dev = info->user_ptr[1];
11045 struct wireless_dev *wdev = dev->ieee80211_ptr;
11046 struct sk_buff *msg;
11047 void *hdr;
11048 const u8 *addr;
11049 u64 cookie;
11050 int err;
11051
11052 if (wdev->iftype != NL80211_IFTYPE_AP &&
11053 wdev->iftype != NL80211_IFTYPE_P2P_GO)
11054 return -EOPNOTSUPP;
11055
11056 if (!info->attrs[NL80211_ATTR_MAC])
11057 return -EINVAL;
11058
11059 if (!rdev->ops->probe_client)
11060 return -EOPNOTSUPP;
11061
11062 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11063 if (!msg)
11064 return -ENOMEM;
11065
11066 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11067 NL80211_CMD_PROBE_CLIENT);
11068 if (!hdr) {
11069 err = -ENOBUFS;
11070 goto free_msg;
11071 }
11072
11073 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
11074
11075 err = rdev_probe_client(rdev, dev, addr, &cookie);
11076 if (err)
11077 goto free_msg;
11078
11079 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11080 NL80211_ATTR_PAD))
11081 goto nla_put_failure;
11082
11083 genlmsg_end(msg, hdr);
11084
11085 return genlmsg_reply(msg, info);
11086
11087 nla_put_failure:
11088 err = -ENOBUFS;
11089 free_msg:
11090 nlmsg_free(msg);
11091 return err;
11092 }
11093
11094 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
11095 {
11096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11097 struct cfg80211_beacon_registration *reg, *nreg;
11098 int rv;
11099
11100 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
11101 return -EOPNOTSUPP;
11102
11103 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
11104 if (!nreg)
11105 return -ENOMEM;
11106
11107 /* First, check if already registered. */
11108 spin_lock_bh(&rdev->beacon_registrations_lock);
11109 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11110 if (reg->nlportid == info->snd_portid) {
11111 rv = -EALREADY;
11112 goto out_err;
11113 }
11114 }
11115 /* Add it to the list */
11116 nreg->nlportid = info->snd_portid;
11117 list_add(&nreg->list, &rdev->beacon_registrations);
11118
11119 spin_unlock_bh(&rdev->beacon_registrations_lock);
11120
11121 return 0;
11122 out_err:
11123 spin_unlock_bh(&rdev->beacon_registrations_lock);
11124 kfree(nreg);
11125 return rv;
11126 }
11127
11128 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
11129 {
11130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11131 struct wireless_dev *wdev = info->user_ptr[1];
11132 int err;
11133
11134 if (!rdev->ops->start_p2p_device)
11135 return -EOPNOTSUPP;
11136
11137 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11138 return -EOPNOTSUPP;
11139
11140 if (wdev_running(wdev))
11141 return 0;
11142
11143 if (rfkill_blocked(rdev->rfkill))
11144 return -ERFKILL;
11145
11146 err = rdev_start_p2p_device(rdev, wdev);
11147 if (err)
11148 return err;
11149
11150 wdev->is_running = true;
11151 rdev->opencount++;
11152
11153 return 0;
11154 }
11155
11156 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
11157 {
11158 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11159 struct wireless_dev *wdev = info->user_ptr[1];
11160
11161 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
11162 return -EOPNOTSUPP;
11163
11164 if (!rdev->ops->stop_p2p_device)
11165 return -EOPNOTSUPP;
11166
11167 cfg80211_stop_p2p_device(rdev, wdev);
11168
11169 return 0;
11170 }
11171
11172 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
11173 {
11174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11175 struct wireless_dev *wdev = info->user_ptr[1];
11176 struct cfg80211_nan_conf conf = {};
11177 int err;
11178
11179 if (wdev->iftype != NL80211_IFTYPE_NAN)
11180 return -EOPNOTSUPP;
11181
11182 if (wdev_running(wdev))
11183 return -EEXIST;
11184
11185 if (rfkill_blocked(rdev->rfkill))
11186 return -ERFKILL;
11187
11188 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
11189 return -EINVAL;
11190
11191 conf.master_pref =
11192 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11193 if (!conf.master_pref)
11194 return -EINVAL;
11195
11196 if (info->attrs[NL80211_ATTR_BANDS]) {
11197 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11198
11199 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11200 return -EOPNOTSUPP;
11201
11202 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11203 return -EINVAL;
11204
11205 conf.bands = bands;
11206 }
11207
11208 err = rdev_start_nan(rdev, wdev, &conf);
11209 if (err)
11210 return err;
11211
11212 wdev->is_running = true;
11213 rdev->opencount++;
11214
11215 return 0;
11216 }
11217
11218 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
11219 {
11220 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11221 struct wireless_dev *wdev = info->user_ptr[1];
11222
11223 if (wdev->iftype != NL80211_IFTYPE_NAN)
11224 return -EOPNOTSUPP;
11225
11226 cfg80211_stop_nan(rdev, wdev);
11227
11228 return 0;
11229 }
11230
11231 static int validate_nan_filter(struct nlattr *filter_attr)
11232 {
11233 struct nlattr *attr;
11234 int len = 0, n_entries = 0, rem;
11235
11236 nla_for_each_nested(attr, filter_attr, rem) {
11237 len += nla_len(attr);
11238 n_entries++;
11239 }
11240
11241 if (len >= U8_MAX)
11242 return -EINVAL;
11243
11244 return n_entries;
11245 }
11246
11247 static int handle_nan_filter(struct nlattr *attr_filter,
11248 struct cfg80211_nan_func *func,
11249 bool tx)
11250 {
11251 struct nlattr *attr;
11252 int n_entries, rem, i;
11253 struct cfg80211_nan_func_filter *filter;
11254
11255 n_entries = validate_nan_filter(attr_filter);
11256 if (n_entries < 0)
11257 return n_entries;
11258
11259 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
11260
11261 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
11262 if (!filter)
11263 return -ENOMEM;
11264
11265 i = 0;
11266 nla_for_each_nested(attr, attr_filter, rem) {
11267 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
11268 filter[i].len = nla_len(attr);
11269 i++;
11270 }
11271 if (tx) {
11272 func->num_tx_filters = n_entries;
11273 func->tx_filters = filter;
11274 } else {
11275 func->num_rx_filters = n_entries;
11276 func->rx_filters = filter;
11277 }
11278
11279 return 0;
11280 }
11281
11282 static int nl80211_nan_add_func(struct sk_buff *skb,
11283 struct genl_info *info)
11284 {
11285 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11286 struct wireless_dev *wdev = info->user_ptr[1];
11287 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
11288 struct cfg80211_nan_func *func;
11289 struct sk_buff *msg = NULL;
11290 void *hdr = NULL;
11291 int err = 0;
11292
11293 if (wdev->iftype != NL80211_IFTYPE_NAN)
11294 return -EOPNOTSUPP;
11295
11296 if (!wdev_running(wdev))
11297 return -ENOTCONN;
11298
11299 if (!info->attrs[NL80211_ATTR_NAN_FUNC])
11300 return -EINVAL;
11301
11302 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX,
11303 info->attrs[NL80211_ATTR_NAN_FUNC],
11304 nl80211_nan_func_policy, info->extack);
11305 if (err)
11306 return err;
11307
11308 func = kzalloc(sizeof(*func), GFP_KERNEL);
11309 if (!func)
11310 return -ENOMEM;
11311
11312 func->cookie = wdev->wiphy->cookie_counter++;
11313
11314 if (!tb[NL80211_NAN_FUNC_TYPE] ||
11315 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
11316 err = -EINVAL;
11317 goto out;
11318 }
11319
11320
11321 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
11322
11323 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
11324 err = -EINVAL;
11325 goto out;
11326 }
11327
11328 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
11329 sizeof(func->service_id));
11330
11331 func->close_range =
11332 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
11333
11334 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
11335 func->serv_spec_info_len =
11336 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
11337 func->serv_spec_info =
11338 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
11339 func->serv_spec_info_len,
11340 GFP_KERNEL);
11341 if (!func->serv_spec_info) {
11342 err = -ENOMEM;
11343 goto out;
11344 }
11345 }
11346
11347 if (tb[NL80211_NAN_FUNC_TTL])
11348 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
11349
11350 switch (func->type) {
11351 case NL80211_NAN_FUNC_PUBLISH:
11352 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
11353 err = -EINVAL;
11354 goto out;
11355 }
11356
11357 func->publish_type =
11358 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
11359 func->publish_bcast =
11360 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
11361
11362 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
11363 func->publish_bcast) {
11364 err = -EINVAL;
11365 goto out;
11366 }
11367 break;
11368 case NL80211_NAN_FUNC_SUBSCRIBE:
11369 func->subscribe_active =
11370 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
11371 break;
11372 case NL80211_NAN_FUNC_FOLLOW_UP:
11373 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
11374 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
11375 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
11376 err = -EINVAL;
11377 goto out;
11378 }
11379
11380 func->followup_id =
11381 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
11382 func->followup_reqid =
11383 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
11384 memcpy(func->followup_dest.addr,
11385 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
11386 sizeof(func->followup_dest.addr));
11387 if (func->ttl) {
11388 err = -EINVAL;
11389 goto out;
11390 }
11391 break;
11392 default:
11393 err = -EINVAL;
11394 goto out;
11395 }
11396
11397 if (tb[NL80211_NAN_FUNC_SRF]) {
11398 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
11399
11400 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX,
11401 tb[NL80211_NAN_FUNC_SRF],
11402 nl80211_nan_srf_policy, info->extack);
11403 if (err)
11404 goto out;
11405
11406 func->srf_include =
11407 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
11408
11409 if (srf_tb[NL80211_NAN_SRF_BF]) {
11410 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
11411 !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
11412 err = -EINVAL;
11413 goto out;
11414 }
11415
11416 func->srf_bf_len =
11417 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
11418 func->srf_bf =
11419 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
11420 func->srf_bf_len, GFP_KERNEL);
11421 if (!func->srf_bf) {
11422 err = -ENOMEM;
11423 goto out;
11424 }
11425
11426 func->srf_bf_idx =
11427 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
11428 } else {
11429 struct nlattr *attr, *mac_attr =
11430 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
11431 int n_entries, rem, i = 0;
11432
11433 if (!mac_attr) {
11434 err = -EINVAL;
11435 goto out;
11436 }
11437
11438 n_entries = validate_acl_mac_addrs(mac_attr);
11439 if (n_entries <= 0) {
11440 err = -EINVAL;
11441 goto out;
11442 }
11443
11444 func->srf_num_macs = n_entries;
11445 func->srf_macs =
11446 kzalloc(sizeof(*func->srf_macs) * n_entries,
11447 GFP_KERNEL);
11448 if (!func->srf_macs) {
11449 err = -ENOMEM;
11450 goto out;
11451 }
11452
11453 nla_for_each_nested(attr, mac_attr, rem)
11454 memcpy(func->srf_macs[i++].addr, nla_data(attr),
11455 sizeof(*func->srf_macs));
11456 }
11457 }
11458
11459 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
11460 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
11461 func, true);
11462 if (err)
11463 goto out;
11464 }
11465
11466 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
11467 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
11468 func, false);
11469 if (err)
11470 goto out;
11471 }
11472
11473 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11474 if (!msg) {
11475 err = -ENOMEM;
11476 goto out;
11477 }
11478
11479 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11480 NL80211_CMD_ADD_NAN_FUNCTION);
11481 /* This can't really happen - we just allocated 4KB */
11482 if (WARN_ON(!hdr)) {
11483 err = -ENOMEM;
11484 goto out;
11485 }
11486
11487 err = rdev_add_nan_func(rdev, wdev, func);
11488 out:
11489 if (err < 0) {
11490 cfg80211_free_nan_func(func);
11491 nlmsg_free(msg);
11492 return err;
11493 }
11494
11495 /* propagate the instance id and cookie to userspace */
11496 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
11497 NL80211_ATTR_PAD))
11498 goto nla_put_failure;
11499
11500 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11501 if (!func_attr)
11502 goto nla_put_failure;
11503
11504 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
11505 func->instance_id))
11506 goto nla_put_failure;
11507
11508 nla_nest_end(msg, func_attr);
11509
11510 genlmsg_end(msg, hdr);
11511 return genlmsg_reply(msg, info);
11512
11513 nla_put_failure:
11514 nlmsg_free(msg);
11515 return -ENOBUFS;
11516 }
11517
11518 static int nl80211_nan_del_func(struct sk_buff *skb,
11519 struct genl_info *info)
11520 {
11521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11522 struct wireless_dev *wdev = info->user_ptr[1];
11523 u64 cookie;
11524
11525 if (wdev->iftype != NL80211_IFTYPE_NAN)
11526 return -EOPNOTSUPP;
11527
11528 if (!wdev_running(wdev))
11529 return -ENOTCONN;
11530
11531 if (!info->attrs[NL80211_ATTR_COOKIE])
11532 return -EINVAL;
11533
11534 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11535
11536 rdev_del_nan_func(rdev, wdev, cookie);
11537
11538 return 0;
11539 }
11540
11541 static int nl80211_nan_change_config(struct sk_buff *skb,
11542 struct genl_info *info)
11543 {
11544 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11545 struct wireless_dev *wdev = info->user_ptr[1];
11546 struct cfg80211_nan_conf conf = {};
11547 u32 changed = 0;
11548
11549 if (wdev->iftype != NL80211_IFTYPE_NAN)
11550 return -EOPNOTSUPP;
11551
11552 if (!wdev_running(wdev))
11553 return -ENOTCONN;
11554
11555 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
11556 conf.master_pref =
11557 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
11558 if (conf.master_pref <= 1 || conf.master_pref == 255)
11559 return -EINVAL;
11560
11561 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
11562 }
11563
11564 if (info->attrs[NL80211_ATTR_BANDS]) {
11565 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
11566
11567 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
11568 return -EOPNOTSUPP;
11569
11570 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
11571 return -EINVAL;
11572
11573 conf.bands = bands;
11574 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
11575 }
11576
11577 if (!changed)
11578 return -EINVAL;
11579
11580 return rdev_nan_change_conf(rdev, wdev, &conf, changed);
11581 }
11582
11583 void cfg80211_nan_match(struct wireless_dev *wdev,
11584 struct cfg80211_nan_match_params *match, gfp_t gfp)
11585 {
11586 struct wiphy *wiphy = wdev->wiphy;
11587 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11588 struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
11589 struct sk_buff *msg;
11590 void *hdr;
11591
11592 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
11593 return;
11594
11595 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11596 if (!msg)
11597 return;
11598
11599 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
11600 if (!hdr) {
11601 nlmsg_free(msg);
11602 return;
11603 }
11604
11605 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11606 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11607 wdev->netdev->ifindex)) ||
11608 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11609 NL80211_ATTR_PAD))
11610 goto nla_put_failure;
11611
11612 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
11613 NL80211_ATTR_PAD) ||
11614 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
11615 goto nla_put_failure;
11616
11617 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH);
11618 if (!match_attr)
11619 goto nla_put_failure;
11620
11621 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL);
11622 if (!local_func_attr)
11623 goto nla_put_failure;
11624
11625 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
11626 goto nla_put_failure;
11627
11628 nla_nest_end(msg, local_func_attr);
11629
11630 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER);
11631 if (!peer_func_attr)
11632 goto nla_put_failure;
11633
11634 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
11635 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
11636 goto nla_put_failure;
11637
11638 if (match->info && match->info_len &&
11639 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
11640 match->info))
11641 goto nla_put_failure;
11642
11643 nla_nest_end(msg, peer_func_attr);
11644 nla_nest_end(msg, match_attr);
11645 genlmsg_end(msg, hdr);
11646
11647 if (!wdev->owner_nlportid)
11648 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11649 msg, 0, NL80211_MCGRP_NAN, gfp);
11650 else
11651 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11652 wdev->owner_nlportid);
11653
11654 return;
11655
11656 nla_put_failure:
11657 nlmsg_free(msg);
11658 }
11659 EXPORT_SYMBOL(cfg80211_nan_match);
11660
11661 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
11662 u8 inst_id,
11663 enum nl80211_nan_func_term_reason reason,
11664 u64 cookie, gfp_t gfp)
11665 {
11666 struct wiphy *wiphy = wdev->wiphy;
11667 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11668 struct sk_buff *msg;
11669 struct nlattr *func_attr;
11670 void *hdr;
11671
11672 if (WARN_ON(!inst_id))
11673 return;
11674
11675 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11676 if (!msg)
11677 return;
11678
11679 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
11680 if (!hdr) {
11681 nlmsg_free(msg);
11682 return;
11683 }
11684
11685 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11686 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11687 wdev->netdev->ifindex)) ||
11688 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11689 NL80211_ATTR_PAD))
11690 goto nla_put_failure;
11691
11692 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11693 NL80211_ATTR_PAD))
11694 goto nla_put_failure;
11695
11696 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC);
11697 if (!func_attr)
11698 goto nla_put_failure;
11699
11700 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
11701 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
11702 goto nla_put_failure;
11703
11704 nla_nest_end(msg, func_attr);
11705 genlmsg_end(msg, hdr);
11706
11707 if (!wdev->owner_nlportid)
11708 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11709 msg, 0, NL80211_MCGRP_NAN, gfp);
11710 else
11711 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
11712 wdev->owner_nlportid);
11713
11714 return;
11715
11716 nla_put_failure:
11717 nlmsg_free(msg);
11718 }
11719 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
11720
11721 static int nl80211_get_protocol_features(struct sk_buff *skb,
11722 struct genl_info *info)
11723 {
11724 void *hdr;
11725 struct sk_buff *msg;
11726
11727 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11728 if (!msg)
11729 return -ENOMEM;
11730
11731 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11732 NL80211_CMD_GET_PROTOCOL_FEATURES);
11733 if (!hdr)
11734 goto nla_put_failure;
11735
11736 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
11737 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
11738 goto nla_put_failure;
11739
11740 genlmsg_end(msg, hdr);
11741 return genlmsg_reply(msg, info);
11742
11743 nla_put_failure:
11744 kfree_skb(msg);
11745 return -ENOBUFS;
11746 }
11747
11748 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
11749 {
11750 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11751 struct cfg80211_update_ft_ies_params ft_params;
11752 struct net_device *dev = info->user_ptr[1];
11753
11754 if (!rdev->ops->update_ft_ies)
11755 return -EOPNOTSUPP;
11756
11757 if (!info->attrs[NL80211_ATTR_MDID] ||
11758 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
11759 return -EINVAL;
11760
11761 memset(&ft_params, 0, sizeof(ft_params));
11762 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
11763 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11764 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11765
11766 return rdev_update_ft_ies(rdev, dev, &ft_params);
11767 }
11768
11769 static int nl80211_crit_protocol_start(struct sk_buff *skb,
11770 struct genl_info *info)
11771 {
11772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11773 struct wireless_dev *wdev = info->user_ptr[1];
11774 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
11775 u16 duration;
11776 int ret;
11777
11778 if (!rdev->ops->crit_proto_start)
11779 return -EOPNOTSUPP;
11780
11781 if (WARN_ON(!rdev->ops->crit_proto_stop))
11782 return -EINVAL;
11783
11784 if (rdev->crit_proto_nlportid)
11785 return -EBUSY;
11786
11787 /* determine protocol if provided */
11788 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
11789 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
11790
11791 if (proto >= NUM_NL80211_CRIT_PROTO)
11792 return -EINVAL;
11793
11794 /* timeout must be provided */
11795 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
11796 return -EINVAL;
11797
11798 duration =
11799 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
11800
11801 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
11802 return -ERANGE;
11803
11804 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
11805 if (!ret)
11806 rdev->crit_proto_nlportid = info->snd_portid;
11807
11808 return ret;
11809 }
11810
11811 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
11812 struct genl_info *info)
11813 {
11814 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11815 struct wireless_dev *wdev = info->user_ptr[1];
11816
11817 if (!rdev->ops->crit_proto_stop)
11818 return -EOPNOTSUPP;
11819
11820 if (rdev->crit_proto_nlportid) {
11821 rdev->crit_proto_nlportid = 0;
11822 rdev_crit_proto_stop(rdev, wdev);
11823 }
11824 return 0;
11825 }
11826
11827 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
11828 {
11829 struct cfg80211_registered_device *rdev = info->user_ptr[0];
11830 struct wireless_dev *wdev =
11831 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
11832 int i, err;
11833 u32 vid, subcmd;
11834
11835 if (!rdev->wiphy.vendor_commands)
11836 return -EOPNOTSUPP;
11837
11838 if (IS_ERR(wdev)) {
11839 err = PTR_ERR(wdev);
11840 if (err != -EINVAL)
11841 return err;
11842 wdev = NULL;
11843 } else if (wdev->wiphy != &rdev->wiphy) {
11844 return -EINVAL;
11845 }
11846
11847 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
11848 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
11849 return -EINVAL;
11850
11851 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
11852 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
11853 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
11854 const struct wiphy_vendor_command *vcmd;
11855 void *data = NULL;
11856 int len = 0;
11857
11858 vcmd = &rdev->wiphy.vendor_commands[i];
11859
11860 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11861 continue;
11862
11863 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
11864 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
11865 if (!wdev)
11866 return -EINVAL;
11867 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
11868 !wdev->netdev)
11869 return -EINVAL;
11870
11871 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
11872 if (!wdev_running(wdev))
11873 return -ENETDOWN;
11874 }
11875
11876 if (!vcmd->doit)
11877 return -EOPNOTSUPP;
11878 } else {
11879 wdev = NULL;
11880 }
11881
11882 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
11883 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11884 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
11885 }
11886
11887 rdev->cur_cmd_info = info;
11888 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
11889 data, len);
11890 rdev->cur_cmd_info = NULL;
11891 return err;
11892 }
11893
11894 return -EOPNOTSUPP;
11895 }
11896
11897 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
11898 struct netlink_callback *cb,
11899 struct cfg80211_registered_device **rdev,
11900 struct wireless_dev **wdev)
11901 {
11902 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam);
11903 u32 vid, subcmd;
11904 unsigned int i;
11905 int vcmd_idx = -1;
11906 int err;
11907 void *data = NULL;
11908 unsigned int data_len = 0;
11909
11910 if (cb->args[0]) {
11911 /* subtract the 1 again here */
11912 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
11913 struct wireless_dev *tmp;
11914
11915 if (!wiphy)
11916 return -ENODEV;
11917 *rdev = wiphy_to_rdev(wiphy);
11918 *wdev = NULL;
11919
11920 if (cb->args[1]) {
11921 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
11922 if (tmp->identifier == cb->args[1] - 1) {
11923 *wdev = tmp;
11924 break;
11925 }
11926 }
11927 }
11928
11929 /* keep rtnl locked in successful case */
11930 return 0;
11931 }
11932
11933 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf,
11934 nl80211_fam.maxattr, nl80211_policy, NULL);
11935 if (err)
11936 return err;
11937
11938 if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
11939 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD])
11940 return -EINVAL;
11941
11942 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
11943 if (IS_ERR(*wdev))
11944 *wdev = NULL;
11945
11946 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11947 if (IS_ERR(*rdev))
11948 return PTR_ERR(*rdev);
11949
11950 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
11951 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
11952
11953 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
11954 const struct wiphy_vendor_command *vcmd;
11955
11956 vcmd = &(*rdev)->wiphy.vendor_commands[i];
11957
11958 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
11959 continue;
11960
11961 if (!vcmd->dumpit)
11962 return -EOPNOTSUPP;
11963
11964 vcmd_idx = i;
11965 break;
11966 }
11967
11968 if (vcmd_idx < 0)
11969 return -EOPNOTSUPP;
11970
11971 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
11972 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11973 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
11974 }
11975
11976 /* 0 is the first index - add 1 to parse only once */
11977 cb->args[0] = (*rdev)->wiphy_idx + 1;
11978 /* add 1 to know if it was NULL */
11979 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
11980 cb->args[2] = vcmd_idx;
11981 cb->args[3] = (unsigned long)data;
11982 cb->args[4] = data_len;
11983
11984 /* keep rtnl locked in successful case */
11985 return 0;
11986 }
11987
11988 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
11989 struct netlink_callback *cb)
11990 {
11991 struct cfg80211_registered_device *rdev;
11992 struct wireless_dev *wdev;
11993 unsigned int vcmd_idx;
11994 const struct wiphy_vendor_command *vcmd;
11995 void *data;
11996 int data_len;
11997 int err;
11998 struct nlattr *vendor_data;
11999
12000 rtnl_lock();
12001 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
12002 if (err)
12003 goto out;
12004
12005 vcmd_idx = cb->args[2];
12006 data = (void *)cb->args[3];
12007 data_len = cb->args[4];
12008 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
12009
12010 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12011 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12012 if (!wdev) {
12013 err = -EINVAL;
12014 goto out;
12015 }
12016 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12017 !wdev->netdev) {
12018 err = -EINVAL;
12019 goto out;
12020 }
12021
12022 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12023 if (!wdev_running(wdev)) {
12024 err = -ENETDOWN;
12025 goto out;
12026 }
12027 }
12028 }
12029
12030 while (1) {
12031 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
12032 cb->nlh->nlmsg_seq, NLM_F_MULTI,
12033 NL80211_CMD_VENDOR);
12034 if (!hdr)
12035 break;
12036
12037 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12038 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
12039 wdev_id(wdev),
12040 NL80211_ATTR_PAD))) {
12041 genlmsg_cancel(skb, hdr);
12042 break;
12043 }
12044
12045 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
12046 if (!vendor_data) {
12047 genlmsg_cancel(skb, hdr);
12048 break;
12049 }
12050
12051 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
12052 (unsigned long *)&cb->args[5]);
12053 nla_nest_end(skb, vendor_data);
12054
12055 if (err == -ENOBUFS || err == -ENOENT) {
12056 genlmsg_cancel(skb, hdr);
12057 break;
12058 } else if (err) {
12059 genlmsg_cancel(skb, hdr);
12060 goto out;
12061 }
12062
12063 genlmsg_end(skb, hdr);
12064 }
12065
12066 err = skb->len;
12067 out:
12068 rtnl_unlock();
12069 return err;
12070 }
12071
12072 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
12073 enum nl80211_commands cmd,
12074 enum nl80211_attrs attr,
12075 int approxlen)
12076 {
12077 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12078
12079 if (WARN_ON(!rdev->cur_cmd_info))
12080 return NULL;
12081
12082 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
12083 rdev->cur_cmd_info->snd_portid,
12084 rdev->cur_cmd_info->snd_seq,
12085 cmd, attr, NULL, GFP_KERNEL);
12086 }
12087 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
12088
12089 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
12090 {
12091 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
12092 void *hdr = ((void **)skb->cb)[1];
12093 struct nlattr *data = ((void **)skb->cb)[2];
12094
12095 /* clear CB data for netlink core to own from now on */
12096 memset(skb->cb, 0, sizeof(skb->cb));
12097
12098 if (WARN_ON(!rdev->cur_cmd_info)) {
12099 kfree_skb(skb);
12100 return -EINVAL;
12101 }
12102
12103 nla_nest_end(skb, data);
12104 genlmsg_end(skb, hdr);
12105 return genlmsg_reply(skb, rdev->cur_cmd_info);
12106 }
12107 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
12108
12109 static int nl80211_set_qos_map(struct sk_buff *skb,
12110 struct genl_info *info)
12111 {
12112 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12113 struct cfg80211_qos_map *qos_map = NULL;
12114 struct net_device *dev = info->user_ptr[1];
12115 u8 *pos, len, num_des, des_len, des;
12116 int ret;
12117
12118 if (!rdev->ops->set_qos_map)
12119 return -EOPNOTSUPP;
12120
12121 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
12122 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
12123 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
12124
12125 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
12126 len > IEEE80211_QOS_MAP_LEN_MAX)
12127 return -EINVAL;
12128
12129 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
12130 if (!qos_map)
12131 return -ENOMEM;
12132
12133 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
12134 if (num_des) {
12135 des_len = num_des *
12136 sizeof(struct cfg80211_dscp_exception);
12137 memcpy(qos_map->dscp_exception, pos, des_len);
12138 qos_map->num_des = num_des;
12139 for (des = 0; des < num_des; des++) {
12140 if (qos_map->dscp_exception[des].up > 7) {
12141 kfree(qos_map);
12142 return -EINVAL;
12143 }
12144 }
12145 pos += des_len;
12146 }
12147 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
12148 }
12149
12150 wdev_lock(dev->ieee80211_ptr);
12151 ret = nl80211_key_allowed(dev->ieee80211_ptr);
12152 if (!ret)
12153 ret = rdev_set_qos_map(rdev, dev, qos_map);
12154 wdev_unlock(dev->ieee80211_ptr);
12155
12156 kfree(qos_map);
12157 return ret;
12158 }
12159
12160 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
12161 {
12162 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12163 struct net_device *dev = info->user_ptr[1];
12164 struct wireless_dev *wdev = dev->ieee80211_ptr;
12165 const u8 *peer;
12166 u8 tsid, up;
12167 u16 admitted_time = 0;
12168 int err;
12169
12170 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
12171 return -EOPNOTSUPP;
12172
12173 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
12174 !info->attrs[NL80211_ATTR_USER_PRIO])
12175 return -EINVAL;
12176
12177 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12178 if (tsid >= IEEE80211_NUM_TIDS)
12179 return -EINVAL;
12180
12181 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
12182 if (up >= IEEE80211_NUM_UPS)
12183 return -EINVAL;
12184
12185 /* WMM uses TIDs 0-7 even for TSPEC */
12186 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
12187 /* TODO: handle 802.11 TSPEC/admission control
12188 * need more attributes for that (e.g. BA session requirement);
12189 * change the WMM adminssion test above to allow both then
12190 */
12191 return -EINVAL;
12192 }
12193
12194 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12195
12196 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
12197 admitted_time =
12198 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
12199 if (!admitted_time)
12200 return -EINVAL;
12201 }
12202
12203 wdev_lock(wdev);
12204 switch (wdev->iftype) {
12205 case NL80211_IFTYPE_STATION:
12206 case NL80211_IFTYPE_P2P_CLIENT:
12207 if (wdev->current_bss)
12208 break;
12209 err = -ENOTCONN;
12210 goto out;
12211 default:
12212 err = -EOPNOTSUPP;
12213 goto out;
12214 }
12215
12216 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
12217
12218 out:
12219 wdev_unlock(wdev);
12220 return err;
12221 }
12222
12223 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
12224 {
12225 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12226 struct net_device *dev = info->user_ptr[1];
12227 struct wireless_dev *wdev = dev->ieee80211_ptr;
12228 const u8 *peer;
12229 u8 tsid;
12230 int err;
12231
12232 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
12233 return -EINVAL;
12234
12235 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
12236 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12237
12238 wdev_lock(wdev);
12239 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
12240 wdev_unlock(wdev);
12241
12242 return err;
12243 }
12244
12245 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
12246 struct genl_info *info)
12247 {
12248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12249 struct net_device *dev = info->user_ptr[1];
12250 struct wireless_dev *wdev = dev->ieee80211_ptr;
12251 struct cfg80211_chan_def chandef = {};
12252 const u8 *addr;
12253 u8 oper_class;
12254 int err;
12255
12256 if (!rdev->ops->tdls_channel_switch ||
12257 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12258 return -EOPNOTSUPP;
12259
12260 switch (dev->ieee80211_ptr->iftype) {
12261 case NL80211_IFTYPE_STATION:
12262 case NL80211_IFTYPE_P2P_CLIENT:
12263 break;
12264 default:
12265 return -EOPNOTSUPP;
12266 }
12267
12268 if (!info->attrs[NL80211_ATTR_MAC] ||
12269 !info->attrs[NL80211_ATTR_OPER_CLASS])
12270 return -EINVAL;
12271
12272 err = nl80211_parse_chandef(rdev, info, &chandef);
12273 if (err)
12274 return err;
12275
12276 /*
12277 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
12278 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
12279 * specification is not defined for them.
12280 */
12281 if (chandef.chan->band == NL80211_BAND_2GHZ &&
12282 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
12283 chandef.width != NL80211_CHAN_WIDTH_20)
12284 return -EINVAL;
12285
12286 /* we will be active on the TDLS link */
12287 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
12288 wdev->iftype))
12289 return -EINVAL;
12290
12291 /* don't allow switching to DFS channels */
12292 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
12293 return -EINVAL;
12294
12295 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12296 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
12297
12298 wdev_lock(wdev);
12299 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
12300 wdev_unlock(wdev);
12301
12302 return err;
12303 }
12304
12305 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
12306 struct genl_info *info)
12307 {
12308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12309 struct net_device *dev = info->user_ptr[1];
12310 struct wireless_dev *wdev = dev->ieee80211_ptr;
12311 const u8 *addr;
12312
12313 if (!rdev->ops->tdls_channel_switch ||
12314 !rdev->ops->tdls_cancel_channel_switch ||
12315 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
12316 return -EOPNOTSUPP;
12317
12318 switch (dev->ieee80211_ptr->iftype) {
12319 case NL80211_IFTYPE_STATION:
12320 case NL80211_IFTYPE_P2P_CLIENT:
12321 break;
12322 default:
12323 return -EOPNOTSUPP;
12324 }
12325
12326 if (!info->attrs[NL80211_ATTR_MAC])
12327 return -EINVAL;
12328
12329 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12330
12331 wdev_lock(wdev);
12332 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
12333 wdev_unlock(wdev);
12334
12335 return 0;
12336 }
12337
12338 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
12339 struct genl_info *info)
12340 {
12341 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12342 struct net_device *dev = info->user_ptr[1];
12343 struct wireless_dev *wdev = dev->ieee80211_ptr;
12344 const struct nlattr *nla;
12345 bool enabled;
12346
12347 if (!rdev->ops->set_multicast_to_unicast)
12348 return -EOPNOTSUPP;
12349
12350 if (wdev->iftype != NL80211_IFTYPE_AP &&
12351 wdev->iftype != NL80211_IFTYPE_P2P_GO)
12352 return -EOPNOTSUPP;
12353
12354 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
12355 enabled = nla_get_flag(nla);
12356
12357 return rdev_set_multicast_to_unicast(rdev, dev, enabled);
12358 }
12359
12360 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
12361 {
12362 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12363 struct net_device *dev = info->user_ptr[1];
12364 struct wireless_dev *wdev = dev->ieee80211_ptr;
12365 struct cfg80211_pmk_conf pmk_conf = {};
12366 int ret;
12367
12368 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12369 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12370 return -EOPNOTSUPP;
12371
12372 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12373 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12374 return -EOPNOTSUPP;
12375
12376 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
12377 return -EINVAL;
12378
12379 wdev_lock(wdev);
12380 if (!wdev->current_bss) {
12381 ret = -ENOTCONN;
12382 goto out;
12383 }
12384
12385 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12386 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
12387 ret = -EINVAL;
12388 goto out;
12389 }
12390
12391 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12392 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12393 if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
12394 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
12395 ret = -EINVAL;
12396 goto out;
12397 }
12398
12399 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
12400 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12401
12402 if (r0_name_len != WLAN_PMK_NAME_LEN) {
12403 ret = -EINVAL;
12404 goto out;
12405 }
12406
12407 pmk_conf.pmk_r0_name =
12408 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
12409 }
12410
12411 ret = rdev_set_pmk(rdev, dev, &pmk_conf);
12412 out:
12413 wdev_unlock(wdev);
12414 return ret;
12415 }
12416
12417 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
12418 {
12419 struct cfg80211_registered_device *rdev = info->user_ptr[0];
12420 struct net_device *dev = info->user_ptr[1];
12421 struct wireless_dev *wdev = dev->ieee80211_ptr;
12422 const u8 *aa;
12423 int ret;
12424
12425 if (wdev->iftype != NL80211_IFTYPE_STATION &&
12426 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12427 return -EOPNOTSUPP;
12428
12429 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12430 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
12431 return -EOPNOTSUPP;
12432
12433 if (!info->attrs[NL80211_ATTR_MAC])
12434 return -EINVAL;
12435
12436 wdev_lock(wdev);
12437 aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
12438 ret = rdev_del_pmk(rdev, dev, aa);
12439 wdev_unlock(wdev);
12440
12441 return ret;
12442 }
12443
12444 #define NL80211_FLAG_NEED_WIPHY 0x01
12445 #define NL80211_FLAG_NEED_NETDEV 0x02
12446 #define NL80211_FLAG_NEED_RTNL 0x04
12447 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
12448 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
12449 NL80211_FLAG_CHECK_NETDEV_UP)
12450 #define NL80211_FLAG_NEED_WDEV 0x10
12451 /* If a netdev is associated, it must be UP, P2P must be started */
12452 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
12453 NL80211_FLAG_CHECK_NETDEV_UP)
12454 #define NL80211_FLAG_CLEAR_SKB 0x20
12455
12456 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
12457 struct genl_info *info)
12458 {
12459 struct cfg80211_registered_device *rdev;
12460 struct wireless_dev *wdev;
12461 struct net_device *dev;
12462 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
12463
12464 if (rtnl)
12465 rtnl_lock();
12466
12467 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
12468 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
12469 if (IS_ERR(rdev)) {
12470 if (rtnl)
12471 rtnl_unlock();
12472 return PTR_ERR(rdev);
12473 }
12474 info->user_ptr[0] = rdev;
12475 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
12476 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12477 ASSERT_RTNL();
12478
12479 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
12480 info->attrs);
12481 if (IS_ERR(wdev)) {
12482 if (rtnl)
12483 rtnl_unlock();
12484 return PTR_ERR(wdev);
12485 }
12486
12487 dev = wdev->netdev;
12488 rdev = wiphy_to_rdev(wdev->wiphy);
12489
12490 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
12491 if (!dev) {
12492 if (rtnl)
12493 rtnl_unlock();
12494 return -EINVAL;
12495 }
12496
12497 info->user_ptr[1] = dev;
12498 } else {
12499 info->user_ptr[1] = wdev;
12500 }
12501
12502 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
12503 !wdev_running(wdev)) {
12504 if (rtnl)
12505 rtnl_unlock();
12506 return -ENETDOWN;
12507 }
12508
12509 if (dev)
12510 dev_hold(dev);
12511
12512 info->user_ptr[0] = rdev;
12513 }
12514
12515 return 0;
12516 }
12517
12518 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
12519 struct genl_info *info)
12520 {
12521 if (info->user_ptr[1]) {
12522 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
12523 struct wireless_dev *wdev = info->user_ptr[1];
12524
12525 if (wdev->netdev)
12526 dev_put(wdev->netdev);
12527 } else {
12528 dev_put(info->user_ptr[1]);
12529 }
12530 }
12531
12532 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
12533 rtnl_unlock();
12534
12535 /* If needed, clear the netlink message payload from the SKB
12536 * as it might contain key data that shouldn't stick around on
12537 * the heap after the SKB is freed. The netlink message header
12538 * is still needed for further processing, so leave it intact.
12539 */
12540 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
12541 struct nlmsghdr *nlh = nlmsg_hdr(skb);
12542
12543 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
12544 }
12545 }
12546
12547 static const struct genl_ops nl80211_ops[] = {
12548 {
12549 .cmd = NL80211_CMD_GET_WIPHY,
12550 .doit = nl80211_get_wiphy,
12551 .dumpit = nl80211_dump_wiphy,
12552 .done = nl80211_dump_wiphy_done,
12553 .policy = nl80211_policy,
12554 /* can be retrieved by unprivileged users */
12555 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12556 NL80211_FLAG_NEED_RTNL,
12557 },
12558 {
12559 .cmd = NL80211_CMD_SET_WIPHY,
12560 .doit = nl80211_set_wiphy,
12561 .policy = nl80211_policy,
12562 .flags = GENL_UNS_ADMIN_PERM,
12563 .internal_flags = NL80211_FLAG_NEED_RTNL,
12564 },
12565 {
12566 .cmd = NL80211_CMD_GET_INTERFACE,
12567 .doit = nl80211_get_interface,
12568 .dumpit = nl80211_dump_interface,
12569 .policy = nl80211_policy,
12570 /* can be retrieved by unprivileged users */
12571 .internal_flags = NL80211_FLAG_NEED_WDEV |
12572 NL80211_FLAG_NEED_RTNL,
12573 },
12574 {
12575 .cmd = NL80211_CMD_SET_INTERFACE,
12576 .doit = nl80211_set_interface,
12577 .policy = nl80211_policy,
12578 .flags = GENL_UNS_ADMIN_PERM,
12579 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12580 NL80211_FLAG_NEED_RTNL,
12581 },
12582 {
12583 .cmd = NL80211_CMD_NEW_INTERFACE,
12584 .doit = nl80211_new_interface,
12585 .policy = nl80211_policy,
12586 .flags = GENL_UNS_ADMIN_PERM,
12587 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12588 NL80211_FLAG_NEED_RTNL,
12589 },
12590 {
12591 .cmd = NL80211_CMD_DEL_INTERFACE,
12592 .doit = nl80211_del_interface,
12593 .policy = nl80211_policy,
12594 .flags = GENL_UNS_ADMIN_PERM,
12595 .internal_flags = NL80211_FLAG_NEED_WDEV |
12596 NL80211_FLAG_NEED_RTNL,
12597 },
12598 {
12599 .cmd = NL80211_CMD_GET_KEY,
12600 .doit = nl80211_get_key,
12601 .policy = nl80211_policy,
12602 .flags = GENL_UNS_ADMIN_PERM,
12603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12604 NL80211_FLAG_NEED_RTNL,
12605 },
12606 {
12607 .cmd = NL80211_CMD_SET_KEY,
12608 .doit = nl80211_set_key,
12609 .policy = nl80211_policy,
12610 .flags = GENL_UNS_ADMIN_PERM,
12611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12612 NL80211_FLAG_NEED_RTNL |
12613 NL80211_FLAG_CLEAR_SKB,
12614 },
12615 {
12616 .cmd = NL80211_CMD_NEW_KEY,
12617 .doit = nl80211_new_key,
12618 .policy = nl80211_policy,
12619 .flags = GENL_UNS_ADMIN_PERM,
12620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12621 NL80211_FLAG_NEED_RTNL |
12622 NL80211_FLAG_CLEAR_SKB,
12623 },
12624 {
12625 .cmd = NL80211_CMD_DEL_KEY,
12626 .doit = nl80211_del_key,
12627 .policy = nl80211_policy,
12628 .flags = GENL_UNS_ADMIN_PERM,
12629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12630 NL80211_FLAG_NEED_RTNL,
12631 },
12632 {
12633 .cmd = NL80211_CMD_SET_BEACON,
12634 .policy = nl80211_policy,
12635 .flags = GENL_UNS_ADMIN_PERM,
12636 .doit = nl80211_set_beacon,
12637 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12638 NL80211_FLAG_NEED_RTNL,
12639 },
12640 {
12641 .cmd = NL80211_CMD_START_AP,
12642 .policy = nl80211_policy,
12643 .flags = GENL_UNS_ADMIN_PERM,
12644 .doit = nl80211_start_ap,
12645 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12646 NL80211_FLAG_NEED_RTNL,
12647 },
12648 {
12649 .cmd = NL80211_CMD_STOP_AP,
12650 .policy = nl80211_policy,
12651 .flags = GENL_UNS_ADMIN_PERM,
12652 .doit = nl80211_stop_ap,
12653 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12654 NL80211_FLAG_NEED_RTNL,
12655 },
12656 {
12657 .cmd = NL80211_CMD_GET_STATION,
12658 .doit = nl80211_get_station,
12659 .dumpit = nl80211_dump_station,
12660 .policy = nl80211_policy,
12661 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12662 NL80211_FLAG_NEED_RTNL,
12663 },
12664 {
12665 .cmd = NL80211_CMD_SET_STATION,
12666 .doit = nl80211_set_station,
12667 .policy = nl80211_policy,
12668 .flags = GENL_UNS_ADMIN_PERM,
12669 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12670 NL80211_FLAG_NEED_RTNL,
12671 },
12672 {
12673 .cmd = NL80211_CMD_NEW_STATION,
12674 .doit = nl80211_new_station,
12675 .policy = nl80211_policy,
12676 .flags = GENL_UNS_ADMIN_PERM,
12677 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12678 NL80211_FLAG_NEED_RTNL,
12679 },
12680 {
12681 .cmd = NL80211_CMD_DEL_STATION,
12682 .doit = nl80211_del_station,
12683 .policy = nl80211_policy,
12684 .flags = GENL_UNS_ADMIN_PERM,
12685 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12686 NL80211_FLAG_NEED_RTNL,
12687 },
12688 {
12689 .cmd = NL80211_CMD_GET_MPATH,
12690 .doit = nl80211_get_mpath,
12691 .dumpit = nl80211_dump_mpath,
12692 .policy = nl80211_policy,
12693 .flags = GENL_UNS_ADMIN_PERM,
12694 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12695 NL80211_FLAG_NEED_RTNL,
12696 },
12697 {
12698 .cmd = NL80211_CMD_GET_MPP,
12699 .doit = nl80211_get_mpp,
12700 .dumpit = nl80211_dump_mpp,
12701 .policy = nl80211_policy,
12702 .flags = GENL_UNS_ADMIN_PERM,
12703 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12704 NL80211_FLAG_NEED_RTNL,
12705 },
12706 {
12707 .cmd = NL80211_CMD_SET_MPATH,
12708 .doit = nl80211_set_mpath,
12709 .policy = nl80211_policy,
12710 .flags = GENL_UNS_ADMIN_PERM,
12711 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12712 NL80211_FLAG_NEED_RTNL,
12713 },
12714 {
12715 .cmd = NL80211_CMD_NEW_MPATH,
12716 .doit = nl80211_new_mpath,
12717 .policy = nl80211_policy,
12718 .flags = GENL_UNS_ADMIN_PERM,
12719 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12720 NL80211_FLAG_NEED_RTNL,
12721 },
12722 {
12723 .cmd = NL80211_CMD_DEL_MPATH,
12724 .doit = nl80211_del_mpath,
12725 .policy = nl80211_policy,
12726 .flags = GENL_UNS_ADMIN_PERM,
12727 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12728 NL80211_FLAG_NEED_RTNL,
12729 },
12730 {
12731 .cmd = NL80211_CMD_SET_BSS,
12732 .doit = nl80211_set_bss,
12733 .policy = nl80211_policy,
12734 .flags = GENL_UNS_ADMIN_PERM,
12735 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12736 NL80211_FLAG_NEED_RTNL,
12737 },
12738 {
12739 .cmd = NL80211_CMD_GET_REG,
12740 .doit = nl80211_get_reg_do,
12741 .dumpit = nl80211_get_reg_dump,
12742 .policy = nl80211_policy,
12743 .internal_flags = NL80211_FLAG_NEED_RTNL,
12744 /* can be retrieved by unprivileged users */
12745 },
12746 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
12747 {
12748 .cmd = NL80211_CMD_SET_REG,
12749 .doit = nl80211_set_reg,
12750 .policy = nl80211_policy,
12751 .flags = GENL_ADMIN_PERM,
12752 .internal_flags = NL80211_FLAG_NEED_RTNL,
12753 },
12754 #endif
12755 {
12756 .cmd = NL80211_CMD_REQ_SET_REG,
12757 .doit = nl80211_req_set_reg,
12758 .policy = nl80211_policy,
12759 .flags = GENL_ADMIN_PERM,
12760 },
12761 {
12762 .cmd = NL80211_CMD_RELOAD_REGDB,
12763 .doit = nl80211_reload_regdb,
12764 .policy = nl80211_policy,
12765 .flags = GENL_ADMIN_PERM,
12766 },
12767 {
12768 .cmd = NL80211_CMD_GET_MESH_CONFIG,
12769 .doit = nl80211_get_mesh_config,
12770 .policy = nl80211_policy,
12771 /* can be retrieved by unprivileged users */
12772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12773 NL80211_FLAG_NEED_RTNL,
12774 },
12775 {
12776 .cmd = NL80211_CMD_SET_MESH_CONFIG,
12777 .doit = nl80211_update_mesh_config,
12778 .policy = nl80211_policy,
12779 .flags = GENL_UNS_ADMIN_PERM,
12780 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12781 NL80211_FLAG_NEED_RTNL,
12782 },
12783 {
12784 .cmd = NL80211_CMD_TRIGGER_SCAN,
12785 .doit = nl80211_trigger_scan,
12786 .policy = nl80211_policy,
12787 .flags = GENL_UNS_ADMIN_PERM,
12788 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12789 NL80211_FLAG_NEED_RTNL,
12790 },
12791 {
12792 .cmd = NL80211_CMD_ABORT_SCAN,
12793 .doit = nl80211_abort_scan,
12794 .policy = nl80211_policy,
12795 .flags = GENL_UNS_ADMIN_PERM,
12796 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12797 NL80211_FLAG_NEED_RTNL,
12798 },
12799 {
12800 .cmd = NL80211_CMD_GET_SCAN,
12801 .policy = nl80211_policy,
12802 .dumpit = nl80211_dump_scan,
12803 },
12804 {
12805 .cmd = NL80211_CMD_START_SCHED_SCAN,
12806 .doit = nl80211_start_sched_scan,
12807 .policy = nl80211_policy,
12808 .flags = GENL_UNS_ADMIN_PERM,
12809 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12810 NL80211_FLAG_NEED_RTNL,
12811 },
12812 {
12813 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
12814 .doit = nl80211_stop_sched_scan,
12815 .policy = nl80211_policy,
12816 .flags = GENL_UNS_ADMIN_PERM,
12817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12818 NL80211_FLAG_NEED_RTNL,
12819 },
12820 {
12821 .cmd = NL80211_CMD_AUTHENTICATE,
12822 .doit = nl80211_authenticate,
12823 .policy = nl80211_policy,
12824 .flags = GENL_UNS_ADMIN_PERM,
12825 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12826 NL80211_FLAG_NEED_RTNL |
12827 NL80211_FLAG_CLEAR_SKB,
12828 },
12829 {
12830 .cmd = NL80211_CMD_ASSOCIATE,
12831 .doit = nl80211_associate,
12832 .policy = nl80211_policy,
12833 .flags = GENL_UNS_ADMIN_PERM,
12834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12835 NL80211_FLAG_NEED_RTNL,
12836 },
12837 {
12838 .cmd = NL80211_CMD_DEAUTHENTICATE,
12839 .doit = nl80211_deauthenticate,
12840 .policy = nl80211_policy,
12841 .flags = GENL_UNS_ADMIN_PERM,
12842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12843 NL80211_FLAG_NEED_RTNL,
12844 },
12845 {
12846 .cmd = NL80211_CMD_DISASSOCIATE,
12847 .doit = nl80211_disassociate,
12848 .policy = nl80211_policy,
12849 .flags = GENL_UNS_ADMIN_PERM,
12850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12851 NL80211_FLAG_NEED_RTNL,
12852 },
12853 {
12854 .cmd = NL80211_CMD_JOIN_IBSS,
12855 .doit = nl80211_join_ibss,
12856 .policy = nl80211_policy,
12857 .flags = GENL_UNS_ADMIN_PERM,
12858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12859 NL80211_FLAG_NEED_RTNL,
12860 },
12861 {
12862 .cmd = NL80211_CMD_LEAVE_IBSS,
12863 .doit = nl80211_leave_ibss,
12864 .policy = nl80211_policy,
12865 .flags = GENL_UNS_ADMIN_PERM,
12866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12867 NL80211_FLAG_NEED_RTNL,
12868 },
12869 #ifdef CONFIG_NL80211_TESTMODE
12870 {
12871 .cmd = NL80211_CMD_TESTMODE,
12872 .doit = nl80211_testmode_do,
12873 .dumpit = nl80211_testmode_dump,
12874 .policy = nl80211_policy,
12875 .flags = GENL_UNS_ADMIN_PERM,
12876 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12877 NL80211_FLAG_NEED_RTNL,
12878 },
12879 #endif
12880 {
12881 .cmd = NL80211_CMD_CONNECT,
12882 .doit = nl80211_connect,
12883 .policy = nl80211_policy,
12884 .flags = GENL_UNS_ADMIN_PERM,
12885 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12886 NL80211_FLAG_NEED_RTNL,
12887 },
12888 {
12889 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
12890 .doit = nl80211_update_connect_params,
12891 .policy = nl80211_policy,
12892 .flags = GENL_ADMIN_PERM,
12893 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12894 NL80211_FLAG_NEED_RTNL,
12895 },
12896 {
12897 .cmd = NL80211_CMD_DISCONNECT,
12898 .doit = nl80211_disconnect,
12899 .policy = nl80211_policy,
12900 .flags = GENL_UNS_ADMIN_PERM,
12901 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12902 NL80211_FLAG_NEED_RTNL,
12903 },
12904 {
12905 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
12906 .doit = nl80211_wiphy_netns,
12907 .policy = nl80211_policy,
12908 .flags = GENL_UNS_ADMIN_PERM,
12909 .internal_flags = NL80211_FLAG_NEED_WIPHY |
12910 NL80211_FLAG_NEED_RTNL,
12911 },
12912 {
12913 .cmd = NL80211_CMD_GET_SURVEY,
12914 .policy = nl80211_policy,
12915 .dumpit = nl80211_dump_survey,
12916 },
12917 {
12918 .cmd = NL80211_CMD_SET_PMKSA,
12919 .doit = nl80211_setdel_pmksa,
12920 .policy = nl80211_policy,
12921 .flags = GENL_UNS_ADMIN_PERM,
12922 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12923 NL80211_FLAG_NEED_RTNL,
12924 },
12925 {
12926 .cmd = NL80211_CMD_DEL_PMKSA,
12927 .doit = nl80211_setdel_pmksa,
12928 .policy = nl80211_policy,
12929 .flags = GENL_UNS_ADMIN_PERM,
12930 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12931 NL80211_FLAG_NEED_RTNL,
12932 },
12933 {
12934 .cmd = NL80211_CMD_FLUSH_PMKSA,
12935 .doit = nl80211_flush_pmksa,
12936 .policy = nl80211_policy,
12937 .flags = GENL_UNS_ADMIN_PERM,
12938 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
12939 NL80211_FLAG_NEED_RTNL,
12940 },
12941 {
12942 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
12943 .doit = nl80211_remain_on_channel,
12944 .policy = nl80211_policy,
12945 .flags = GENL_UNS_ADMIN_PERM,
12946 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12947 NL80211_FLAG_NEED_RTNL,
12948 },
12949 {
12950 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12951 .doit = nl80211_cancel_remain_on_channel,
12952 .policy = nl80211_policy,
12953 .flags = GENL_UNS_ADMIN_PERM,
12954 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12955 NL80211_FLAG_NEED_RTNL,
12956 },
12957 {
12958 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
12959 .doit = nl80211_set_tx_bitrate_mask,
12960 .policy = nl80211_policy,
12961 .flags = GENL_UNS_ADMIN_PERM,
12962 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12963 NL80211_FLAG_NEED_RTNL,
12964 },
12965 {
12966 .cmd = NL80211_CMD_REGISTER_FRAME,
12967 .doit = nl80211_register_mgmt,
12968 .policy = nl80211_policy,
12969 .flags = GENL_UNS_ADMIN_PERM,
12970 .internal_flags = NL80211_FLAG_NEED_WDEV |
12971 NL80211_FLAG_NEED_RTNL,
12972 },
12973 {
12974 .cmd = NL80211_CMD_FRAME,
12975 .doit = nl80211_tx_mgmt,
12976 .policy = nl80211_policy,
12977 .flags = GENL_UNS_ADMIN_PERM,
12978 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12979 NL80211_FLAG_NEED_RTNL,
12980 },
12981 {
12982 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
12983 .doit = nl80211_tx_mgmt_cancel_wait,
12984 .policy = nl80211_policy,
12985 .flags = GENL_UNS_ADMIN_PERM,
12986 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
12987 NL80211_FLAG_NEED_RTNL,
12988 },
12989 {
12990 .cmd = NL80211_CMD_SET_POWER_SAVE,
12991 .doit = nl80211_set_power_save,
12992 .policy = nl80211_policy,
12993 .flags = GENL_UNS_ADMIN_PERM,
12994 .internal_flags = NL80211_FLAG_NEED_NETDEV |
12995 NL80211_FLAG_NEED_RTNL,
12996 },
12997 {
12998 .cmd = NL80211_CMD_GET_POWER_SAVE,
12999 .doit = nl80211_get_power_save,
13000 .policy = nl80211_policy,
13001 /* can be retrieved by unprivileged users */
13002 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13003 NL80211_FLAG_NEED_RTNL,
13004 },
13005 {
13006 .cmd = NL80211_CMD_SET_CQM,
13007 .doit = nl80211_set_cqm,
13008 .policy = nl80211_policy,
13009 .flags = GENL_UNS_ADMIN_PERM,
13010 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13011 NL80211_FLAG_NEED_RTNL,
13012 },
13013 {
13014 .cmd = NL80211_CMD_SET_CHANNEL,
13015 .doit = nl80211_set_channel,
13016 .policy = nl80211_policy,
13017 .flags = GENL_UNS_ADMIN_PERM,
13018 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13019 NL80211_FLAG_NEED_RTNL,
13020 },
13021 {
13022 .cmd = NL80211_CMD_SET_WDS_PEER,
13023 .doit = nl80211_set_wds_peer,
13024 .policy = nl80211_policy,
13025 .flags = GENL_UNS_ADMIN_PERM,
13026 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13027 NL80211_FLAG_NEED_RTNL,
13028 },
13029 {
13030 .cmd = NL80211_CMD_JOIN_MESH,
13031 .doit = nl80211_join_mesh,
13032 .policy = nl80211_policy,
13033 .flags = GENL_UNS_ADMIN_PERM,
13034 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13035 NL80211_FLAG_NEED_RTNL,
13036 },
13037 {
13038 .cmd = NL80211_CMD_LEAVE_MESH,
13039 .doit = nl80211_leave_mesh,
13040 .policy = nl80211_policy,
13041 .flags = GENL_UNS_ADMIN_PERM,
13042 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13043 NL80211_FLAG_NEED_RTNL,
13044 },
13045 {
13046 .cmd = NL80211_CMD_JOIN_OCB,
13047 .doit = nl80211_join_ocb,
13048 .policy = nl80211_policy,
13049 .flags = GENL_UNS_ADMIN_PERM,
13050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13051 NL80211_FLAG_NEED_RTNL,
13052 },
13053 {
13054 .cmd = NL80211_CMD_LEAVE_OCB,
13055 .doit = nl80211_leave_ocb,
13056 .policy = nl80211_policy,
13057 .flags = GENL_UNS_ADMIN_PERM,
13058 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13059 NL80211_FLAG_NEED_RTNL,
13060 },
13061 #ifdef CONFIG_PM
13062 {
13063 .cmd = NL80211_CMD_GET_WOWLAN,
13064 .doit = nl80211_get_wowlan,
13065 .policy = nl80211_policy,
13066 /* can be retrieved by unprivileged users */
13067 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13068 NL80211_FLAG_NEED_RTNL,
13069 },
13070 {
13071 .cmd = NL80211_CMD_SET_WOWLAN,
13072 .doit = nl80211_set_wowlan,
13073 .policy = nl80211_policy,
13074 .flags = GENL_UNS_ADMIN_PERM,
13075 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13076 NL80211_FLAG_NEED_RTNL,
13077 },
13078 #endif
13079 {
13080 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
13081 .doit = nl80211_set_rekey_data,
13082 .policy = nl80211_policy,
13083 .flags = GENL_UNS_ADMIN_PERM,
13084 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13085 NL80211_FLAG_NEED_RTNL |
13086 NL80211_FLAG_CLEAR_SKB,
13087 },
13088 {
13089 .cmd = NL80211_CMD_TDLS_MGMT,
13090 .doit = nl80211_tdls_mgmt,
13091 .policy = nl80211_policy,
13092 .flags = GENL_UNS_ADMIN_PERM,
13093 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13094 NL80211_FLAG_NEED_RTNL,
13095 },
13096 {
13097 .cmd = NL80211_CMD_TDLS_OPER,
13098 .doit = nl80211_tdls_oper,
13099 .policy = nl80211_policy,
13100 .flags = GENL_UNS_ADMIN_PERM,
13101 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13102 NL80211_FLAG_NEED_RTNL,
13103 },
13104 {
13105 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
13106 .doit = nl80211_register_unexpected_frame,
13107 .policy = nl80211_policy,
13108 .flags = GENL_UNS_ADMIN_PERM,
13109 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13110 NL80211_FLAG_NEED_RTNL,
13111 },
13112 {
13113 .cmd = NL80211_CMD_PROBE_CLIENT,
13114 .doit = nl80211_probe_client,
13115 .policy = nl80211_policy,
13116 .flags = GENL_UNS_ADMIN_PERM,
13117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13118 NL80211_FLAG_NEED_RTNL,
13119 },
13120 {
13121 .cmd = NL80211_CMD_REGISTER_BEACONS,
13122 .doit = nl80211_register_beacons,
13123 .policy = nl80211_policy,
13124 .flags = GENL_UNS_ADMIN_PERM,
13125 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13126 NL80211_FLAG_NEED_RTNL,
13127 },
13128 {
13129 .cmd = NL80211_CMD_SET_NOACK_MAP,
13130 .doit = nl80211_set_noack_map,
13131 .policy = nl80211_policy,
13132 .flags = GENL_UNS_ADMIN_PERM,
13133 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13134 NL80211_FLAG_NEED_RTNL,
13135 },
13136 {
13137 .cmd = NL80211_CMD_START_P2P_DEVICE,
13138 .doit = nl80211_start_p2p_device,
13139 .policy = nl80211_policy,
13140 .flags = GENL_UNS_ADMIN_PERM,
13141 .internal_flags = NL80211_FLAG_NEED_WDEV |
13142 NL80211_FLAG_NEED_RTNL,
13143 },
13144 {
13145 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
13146 .doit = nl80211_stop_p2p_device,
13147 .policy = nl80211_policy,
13148 .flags = GENL_UNS_ADMIN_PERM,
13149 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13150 NL80211_FLAG_NEED_RTNL,
13151 },
13152 {
13153 .cmd = NL80211_CMD_START_NAN,
13154 .doit = nl80211_start_nan,
13155 .policy = nl80211_policy,
13156 .flags = GENL_ADMIN_PERM,
13157 .internal_flags = NL80211_FLAG_NEED_WDEV |
13158 NL80211_FLAG_NEED_RTNL,
13159 },
13160 {
13161 .cmd = NL80211_CMD_STOP_NAN,
13162 .doit = nl80211_stop_nan,
13163 .policy = nl80211_policy,
13164 .flags = GENL_ADMIN_PERM,
13165 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13166 NL80211_FLAG_NEED_RTNL,
13167 },
13168 {
13169 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
13170 .doit = nl80211_nan_add_func,
13171 .policy = nl80211_policy,
13172 .flags = GENL_ADMIN_PERM,
13173 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13174 NL80211_FLAG_NEED_RTNL,
13175 },
13176 {
13177 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
13178 .doit = nl80211_nan_del_func,
13179 .policy = nl80211_policy,
13180 .flags = GENL_ADMIN_PERM,
13181 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13182 NL80211_FLAG_NEED_RTNL,
13183 },
13184 {
13185 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
13186 .doit = nl80211_nan_change_config,
13187 .policy = nl80211_policy,
13188 .flags = GENL_ADMIN_PERM,
13189 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13190 NL80211_FLAG_NEED_RTNL,
13191 },
13192 {
13193 .cmd = NL80211_CMD_SET_MCAST_RATE,
13194 .doit = nl80211_set_mcast_rate,
13195 .policy = nl80211_policy,
13196 .flags = GENL_UNS_ADMIN_PERM,
13197 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13198 NL80211_FLAG_NEED_RTNL,
13199 },
13200 {
13201 .cmd = NL80211_CMD_SET_MAC_ACL,
13202 .doit = nl80211_set_mac_acl,
13203 .policy = nl80211_policy,
13204 .flags = GENL_UNS_ADMIN_PERM,
13205 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13206 NL80211_FLAG_NEED_RTNL,
13207 },
13208 {
13209 .cmd = NL80211_CMD_RADAR_DETECT,
13210 .doit = nl80211_start_radar_detection,
13211 .policy = nl80211_policy,
13212 .flags = GENL_UNS_ADMIN_PERM,
13213 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13214 NL80211_FLAG_NEED_RTNL,
13215 },
13216 {
13217 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
13218 .doit = nl80211_get_protocol_features,
13219 .policy = nl80211_policy,
13220 },
13221 {
13222 .cmd = NL80211_CMD_UPDATE_FT_IES,
13223 .doit = nl80211_update_ft_ies,
13224 .policy = nl80211_policy,
13225 .flags = GENL_UNS_ADMIN_PERM,
13226 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13227 NL80211_FLAG_NEED_RTNL,
13228 },
13229 {
13230 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
13231 .doit = nl80211_crit_protocol_start,
13232 .policy = nl80211_policy,
13233 .flags = GENL_UNS_ADMIN_PERM,
13234 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13235 NL80211_FLAG_NEED_RTNL,
13236 },
13237 {
13238 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
13239 .doit = nl80211_crit_protocol_stop,
13240 .policy = nl80211_policy,
13241 .flags = GENL_UNS_ADMIN_PERM,
13242 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
13243 NL80211_FLAG_NEED_RTNL,
13244 },
13245 {
13246 .cmd = NL80211_CMD_GET_COALESCE,
13247 .doit = nl80211_get_coalesce,
13248 .policy = nl80211_policy,
13249 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13250 NL80211_FLAG_NEED_RTNL,
13251 },
13252 {
13253 .cmd = NL80211_CMD_SET_COALESCE,
13254 .doit = nl80211_set_coalesce,
13255 .policy = nl80211_policy,
13256 .flags = GENL_UNS_ADMIN_PERM,
13257 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13258 NL80211_FLAG_NEED_RTNL,
13259 },
13260 {
13261 .cmd = NL80211_CMD_CHANNEL_SWITCH,
13262 .doit = nl80211_channel_switch,
13263 .policy = nl80211_policy,
13264 .flags = GENL_UNS_ADMIN_PERM,
13265 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13266 NL80211_FLAG_NEED_RTNL,
13267 },
13268 {
13269 .cmd = NL80211_CMD_VENDOR,
13270 .doit = nl80211_vendor_cmd,
13271 .dumpit = nl80211_vendor_cmd_dump,
13272 .policy = nl80211_policy,
13273 .flags = GENL_UNS_ADMIN_PERM,
13274 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13275 NL80211_FLAG_NEED_RTNL,
13276 },
13277 {
13278 .cmd = NL80211_CMD_SET_QOS_MAP,
13279 .doit = nl80211_set_qos_map,
13280 .policy = nl80211_policy,
13281 .flags = GENL_UNS_ADMIN_PERM,
13282 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13283 NL80211_FLAG_NEED_RTNL,
13284 },
13285 {
13286 .cmd = NL80211_CMD_ADD_TX_TS,
13287 .doit = nl80211_add_tx_ts,
13288 .policy = nl80211_policy,
13289 .flags = GENL_UNS_ADMIN_PERM,
13290 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13291 NL80211_FLAG_NEED_RTNL,
13292 },
13293 {
13294 .cmd = NL80211_CMD_DEL_TX_TS,
13295 .doit = nl80211_del_tx_ts,
13296 .policy = nl80211_policy,
13297 .flags = GENL_UNS_ADMIN_PERM,
13298 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13299 NL80211_FLAG_NEED_RTNL,
13300 },
13301 {
13302 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
13303 .doit = nl80211_tdls_channel_switch,
13304 .policy = nl80211_policy,
13305 .flags = GENL_UNS_ADMIN_PERM,
13306 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13307 NL80211_FLAG_NEED_RTNL,
13308 },
13309 {
13310 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
13311 .doit = nl80211_tdls_cancel_channel_switch,
13312 .policy = nl80211_policy,
13313 .flags = GENL_UNS_ADMIN_PERM,
13314 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13315 NL80211_FLAG_NEED_RTNL,
13316 },
13317 {
13318 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
13319 .doit = nl80211_set_multicast_to_unicast,
13320 .policy = nl80211_policy,
13321 .flags = GENL_UNS_ADMIN_PERM,
13322 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13323 NL80211_FLAG_NEED_RTNL,
13324 },
13325 {
13326 .cmd = NL80211_CMD_SET_PMK,
13327 .doit = nl80211_set_pmk,
13328 .policy = nl80211_policy,
13329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13330 NL80211_FLAG_NEED_RTNL,
13331 },
13332 {
13333 .cmd = NL80211_CMD_DEL_PMK,
13334 .doit = nl80211_del_pmk,
13335 .policy = nl80211_policy,
13336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13337 NL80211_FLAG_NEED_RTNL,
13338 },
13339
13340 };
13341
13342 static struct genl_family nl80211_fam __ro_after_init = {
13343 .name = NL80211_GENL_NAME, /* have users key off the name instead */
13344 .hdrsize = 0, /* no private header */
13345 .version = 1, /* no particular meaning now */
13346 .maxattr = NL80211_ATTR_MAX,
13347 .netnsok = true,
13348 .pre_doit = nl80211_pre_doit,
13349 .post_doit = nl80211_post_doit,
13350 .module = THIS_MODULE,
13351 .ops = nl80211_ops,
13352 .n_ops = ARRAY_SIZE(nl80211_ops),
13353 .mcgrps = nl80211_mcgrps,
13354 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
13355 };
13356
13357 /* notification functions */
13358
13359 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
13360 enum nl80211_commands cmd)
13361 {
13362 struct sk_buff *msg;
13363 struct nl80211_dump_wiphy_state state = {};
13364
13365 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
13366 cmd != NL80211_CMD_DEL_WIPHY);
13367
13368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13369 if (!msg)
13370 return;
13371
13372 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
13373 nlmsg_free(msg);
13374 return;
13375 }
13376
13377 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13378 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13379 }
13380
13381 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
13382 struct wireless_dev *wdev,
13383 enum nl80211_commands cmd)
13384 {
13385 struct sk_buff *msg;
13386
13387 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
13388 cmd != NL80211_CMD_DEL_INTERFACE);
13389
13390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13391 if (!msg)
13392 return;
13393
13394 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev,
13395 cmd == NL80211_CMD_DEL_INTERFACE) < 0) {
13396 nlmsg_free(msg);
13397 return;
13398 }
13399
13400 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13401 NL80211_MCGRP_CONFIG, GFP_KERNEL);
13402 }
13403
13404 static int nl80211_add_scan_req(struct sk_buff *msg,
13405 struct cfg80211_registered_device *rdev)
13406 {
13407 struct cfg80211_scan_request *req = rdev->scan_req;
13408 struct nlattr *nest;
13409 int i;
13410
13411 if (WARN_ON(!req))
13412 return 0;
13413
13414 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
13415 if (!nest)
13416 goto nla_put_failure;
13417 for (i = 0; i < req->n_ssids; i++) {
13418 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
13419 goto nla_put_failure;
13420 }
13421 nla_nest_end(msg, nest);
13422
13423 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13424 if (!nest)
13425 goto nla_put_failure;
13426 for (i = 0; i < req->n_channels; i++) {
13427 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13428 goto nla_put_failure;
13429 }
13430 nla_nest_end(msg, nest);
13431
13432 if (req->ie &&
13433 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
13434 goto nla_put_failure;
13435
13436 if (req->flags &&
13437 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
13438 goto nla_put_failure;
13439
13440 if (req->info.scan_start_tsf &&
13441 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
13442 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
13443 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
13444 req->info.tsf_bssid)))
13445 goto nla_put_failure;
13446
13447 return 0;
13448 nla_put_failure:
13449 return -ENOBUFS;
13450 }
13451
13452 static int nl80211_prep_scan_msg(struct sk_buff *msg,
13453 struct cfg80211_registered_device *rdev,
13454 struct wireless_dev *wdev,
13455 u32 portid, u32 seq, int flags,
13456 u32 cmd)
13457 {
13458 void *hdr;
13459
13460 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
13461 if (!hdr)
13462 return -1;
13463
13464 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13465 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13466 wdev->netdev->ifindex)) ||
13467 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13468 NL80211_ATTR_PAD))
13469 goto nla_put_failure;
13470
13471 /* ignore errors and send incomplete event anyway */
13472 nl80211_add_scan_req(msg, rdev);
13473
13474 genlmsg_end(msg, hdr);
13475 return 0;
13476
13477 nla_put_failure:
13478 genlmsg_cancel(msg, hdr);
13479 return -EMSGSIZE;
13480 }
13481
13482 static int
13483 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
13484 struct cfg80211_sched_scan_request *req, u32 cmd)
13485 {
13486 void *hdr;
13487
13488 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13489 if (!hdr)
13490 return -1;
13491
13492 if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
13493 wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
13494 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
13495 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
13496 NL80211_ATTR_PAD))
13497 goto nla_put_failure;
13498
13499 genlmsg_end(msg, hdr);
13500 return 0;
13501
13502 nla_put_failure:
13503 genlmsg_cancel(msg, hdr);
13504 return -EMSGSIZE;
13505 }
13506
13507 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
13508 struct wireless_dev *wdev)
13509 {
13510 struct sk_buff *msg;
13511
13512 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13513 if (!msg)
13514 return;
13515
13516 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13517 NL80211_CMD_TRIGGER_SCAN) < 0) {
13518 nlmsg_free(msg);
13519 return;
13520 }
13521
13522 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13523 NL80211_MCGRP_SCAN, GFP_KERNEL);
13524 }
13525
13526 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
13527 struct wireless_dev *wdev, bool aborted)
13528 {
13529 struct sk_buff *msg;
13530
13531 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13532 if (!msg)
13533 return NULL;
13534
13535 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
13536 aborted ? NL80211_CMD_SCAN_ABORTED :
13537 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
13538 nlmsg_free(msg);
13539 return NULL;
13540 }
13541
13542 return msg;
13543 }
13544
13545 /* send message created by nl80211_build_scan_msg() */
13546 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
13547 struct sk_buff *msg)
13548 {
13549 if (!msg)
13550 return;
13551
13552 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13553 NL80211_MCGRP_SCAN, GFP_KERNEL);
13554 }
13555
13556 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
13557 {
13558 struct sk_buff *msg;
13559
13560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13561 if (!msg)
13562 return;
13563
13564 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
13565 nlmsg_free(msg);
13566 return;
13567 }
13568
13569 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
13570 NL80211_MCGRP_SCAN, GFP_KERNEL);
13571 }
13572
13573 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
13574 struct regulatory_request *request)
13575 {
13576 /* Userspace can always count this one always being set */
13577 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
13578 goto nla_put_failure;
13579
13580 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
13581 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13582 NL80211_REGDOM_TYPE_WORLD))
13583 goto nla_put_failure;
13584 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
13585 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13586 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
13587 goto nla_put_failure;
13588 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
13589 request->intersect) {
13590 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13591 NL80211_REGDOM_TYPE_INTERSECTION))
13592 goto nla_put_failure;
13593 } else {
13594 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
13595 NL80211_REGDOM_TYPE_COUNTRY) ||
13596 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
13597 request->alpha2))
13598 goto nla_put_failure;
13599 }
13600
13601 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
13602 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
13603
13604 if (wiphy &&
13605 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
13606 goto nla_put_failure;
13607
13608 if (wiphy &&
13609 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
13610 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
13611 goto nla_put_failure;
13612 }
13613
13614 return true;
13615
13616 nla_put_failure:
13617 return false;
13618 }
13619
13620 /*
13621 * This can happen on global regulatory changes or device specific settings
13622 * based on custom regulatory domains.
13623 */
13624 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
13625 struct regulatory_request *request)
13626 {
13627 struct sk_buff *msg;
13628 void *hdr;
13629
13630 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13631 if (!msg)
13632 return;
13633
13634 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
13635 if (!hdr) {
13636 nlmsg_free(msg);
13637 return;
13638 }
13639
13640 if (nl80211_reg_change_event_fill(msg, request) == false)
13641 goto nla_put_failure;
13642
13643 genlmsg_end(msg, hdr);
13644
13645 rcu_read_lock();
13646 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
13647 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
13648 rcu_read_unlock();
13649
13650 return;
13651
13652 nla_put_failure:
13653 genlmsg_cancel(msg, hdr);
13654 nlmsg_free(msg);
13655 }
13656
13657 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
13658 struct net_device *netdev,
13659 const u8 *buf, size_t len,
13660 enum nl80211_commands cmd, gfp_t gfp,
13661 int uapsd_queues)
13662 {
13663 struct sk_buff *msg;
13664 void *hdr;
13665
13666 msg = nlmsg_new(100 + len, gfp);
13667 if (!msg)
13668 return;
13669
13670 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13671 if (!hdr) {
13672 nlmsg_free(msg);
13673 return;
13674 }
13675
13676 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13677 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13678 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
13679 goto nla_put_failure;
13680
13681 if (uapsd_queues >= 0) {
13682 struct nlattr *nla_wmm =
13683 nla_nest_start(msg, NL80211_ATTR_STA_WME);
13684 if (!nla_wmm)
13685 goto nla_put_failure;
13686
13687 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
13688 uapsd_queues))
13689 goto nla_put_failure;
13690
13691 nla_nest_end(msg, nla_wmm);
13692 }
13693
13694 genlmsg_end(msg, hdr);
13695
13696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13697 NL80211_MCGRP_MLME, gfp);
13698 return;
13699
13700 nla_put_failure:
13701 genlmsg_cancel(msg, hdr);
13702 nlmsg_free(msg);
13703 }
13704
13705 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
13706 struct net_device *netdev, const u8 *buf,
13707 size_t len, gfp_t gfp)
13708 {
13709 nl80211_send_mlme_event(rdev, netdev, buf, len,
13710 NL80211_CMD_AUTHENTICATE, gfp, -1);
13711 }
13712
13713 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
13714 struct net_device *netdev, const u8 *buf,
13715 size_t len, gfp_t gfp, int uapsd_queues)
13716 {
13717 nl80211_send_mlme_event(rdev, netdev, buf, len,
13718 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
13719 }
13720
13721 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
13722 struct net_device *netdev, const u8 *buf,
13723 size_t len, gfp_t gfp)
13724 {
13725 nl80211_send_mlme_event(rdev, netdev, buf, len,
13726 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
13727 }
13728
13729 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
13730 struct net_device *netdev, const u8 *buf,
13731 size_t len, gfp_t gfp)
13732 {
13733 nl80211_send_mlme_event(rdev, netdev, buf, len,
13734 NL80211_CMD_DISASSOCIATE, gfp, -1);
13735 }
13736
13737 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
13738 size_t len)
13739 {
13740 struct wireless_dev *wdev = dev->ieee80211_ptr;
13741 struct wiphy *wiphy = wdev->wiphy;
13742 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13743 const struct ieee80211_mgmt *mgmt = (void *)buf;
13744 u32 cmd;
13745
13746 if (WARN_ON(len < 2))
13747 return;
13748
13749 if (ieee80211_is_deauth(mgmt->frame_control))
13750 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
13751 else
13752 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
13753
13754 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
13755 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
13756 }
13757 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
13758
13759 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
13760 struct net_device *netdev, int cmd,
13761 const u8 *addr, gfp_t gfp)
13762 {
13763 struct sk_buff *msg;
13764 void *hdr;
13765
13766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13767 if (!msg)
13768 return;
13769
13770 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
13771 if (!hdr) {
13772 nlmsg_free(msg);
13773 return;
13774 }
13775
13776 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13777 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13778 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13779 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
13780 goto nla_put_failure;
13781
13782 genlmsg_end(msg, hdr);
13783
13784 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13785 NL80211_MCGRP_MLME, gfp);
13786 return;
13787
13788 nla_put_failure:
13789 genlmsg_cancel(msg, hdr);
13790 nlmsg_free(msg);
13791 }
13792
13793 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
13794 struct net_device *netdev, const u8 *addr,
13795 gfp_t gfp)
13796 {
13797 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
13798 addr, gfp);
13799 }
13800
13801 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
13802 struct net_device *netdev, const u8 *addr,
13803 gfp_t gfp)
13804 {
13805 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
13806 addr, gfp);
13807 }
13808
13809 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
13810 struct net_device *netdev,
13811 struct cfg80211_connect_resp_params *cr,
13812 gfp_t gfp)
13813 {
13814 struct sk_buff *msg;
13815 void *hdr;
13816
13817 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
13818 cr->fils_kek_len + cr->pmk_len +
13819 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp);
13820 if (!msg)
13821 return;
13822
13823 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
13824 if (!hdr) {
13825 nlmsg_free(msg);
13826 return;
13827 }
13828
13829 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13830 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13831 (cr->bssid &&
13832 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
13833 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
13834 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
13835 cr->status) ||
13836 (cr->status < 0 &&
13837 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
13838 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
13839 cr->timeout_reason))) ||
13840 (cr->req_ie &&
13841 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
13842 (cr->resp_ie &&
13843 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
13844 cr->resp_ie)) ||
13845 (cr->update_erp_next_seq_num &&
13846 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
13847 cr->fils_erp_next_seq_num)) ||
13848 (cr->status == WLAN_STATUS_SUCCESS &&
13849 ((cr->fils_kek &&
13850 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len,
13851 cr->fils_kek)) ||
13852 (cr->pmk &&
13853 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) ||
13854 (cr->pmkid &&
13855 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid)))))
13856 goto nla_put_failure;
13857
13858 genlmsg_end(msg, hdr);
13859
13860 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13861 NL80211_MCGRP_MLME, gfp);
13862 return;
13863
13864 nla_put_failure:
13865 genlmsg_cancel(msg, hdr);
13866 nlmsg_free(msg);
13867 }
13868
13869 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
13870 struct net_device *netdev,
13871 struct cfg80211_roam_info *info, gfp_t gfp)
13872 {
13873 struct sk_buff *msg;
13874 void *hdr;
13875 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
13876
13877 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
13878 if (!msg)
13879 return;
13880
13881 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
13882 if (!hdr) {
13883 nlmsg_free(msg);
13884 return;
13885 }
13886
13887 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13888 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13889 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
13890 (info->req_ie &&
13891 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
13892 info->req_ie)) ||
13893 (info->resp_ie &&
13894 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
13895 info->resp_ie)))
13896 goto nla_put_failure;
13897
13898 genlmsg_end(msg, hdr);
13899
13900 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13901 NL80211_MCGRP_MLME, gfp);
13902 return;
13903
13904 nla_put_failure:
13905 genlmsg_cancel(msg, hdr);
13906 nlmsg_free(msg);
13907 }
13908
13909 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
13910 struct net_device *netdev, const u8 *bssid)
13911 {
13912 struct sk_buff *msg;
13913 void *hdr;
13914
13915 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13916 if (!msg)
13917 return;
13918
13919 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
13920 if (!hdr) {
13921 nlmsg_free(msg);
13922 return;
13923 }
13924
13925 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13926 goto nla_put_failure;
13927
13928 genlmsg_end(msg, hdr);
13929
13930 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13931 NL80211_MCGRP_MLME, GFP_KERNEL);
13932 return;
13933
13934 nla_put_failure:
13935 genlmsg_cancel(msg, hdr);
13936 nlmsg_free(msg);
13937 }
13938
13939 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
13940 struct net_device *netdev, u16 reason,
13941 const u8 *ie, size_t ie_len, bool from_ap)
13942 {
13943 struct sk_buff *msg;
13944 void *hdr;
13945
13946 msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
13947 if (!msg)
13948 return;
13949
13950 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
13951 if (!hdr) {
13952 nlmsg_free(msg);
13953 return;
13954 }
13955
13956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13957 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13958 (from_ap && reason &&
13959 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
13960 (from_ap &&
13961 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
13962 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
13963 goto nla_put_failure;
13964
13965 genlmsg_end(msg, hdr);
13966
13967 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13968 NL80211_MCGRP_MLME, GFP_KERNEL);
13969 return;
13970
13971 nla_put_failure:
13972 genlmsg_cancel(msg, hdr);
13973 nlmsg_free(msg);
13974 }
13975
13976 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
13977 struct net_device *netdev, const u8 *bssid,
13978 gfp_t gfp)
13979 {
13980 struct sk_buff *msg;
13981 void *hdr;
13982
13983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13984 if (!msg)
13985 return;
13986
13987 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
13988 if (!hdr) {
13989 nlmsg_free(msg);
13990 return;
13991 }
13992
13993 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13994 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13995 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13996 goto nla_put_failure;
13997
13998 genlmsg_end(msg, hdr);
13999
14000 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14001 NL80211_MCGRP_MLME, gfp);
14002 return;
14003
14004 nla_put_failure:
14005 genlmsg_cancel(msg, hdr);
14006 nlmsg_free(msg);
14007 }
14008
14009 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
14010 const u8* ie, u8 ie_len, gfp_t gfp)
14011 {
14012 struct wireless_dev *wdev = dev->ieee80211_ptr;
14013 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14014 struct sk_buff *msg;
14015 void *hdr;
14016
14017 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
14018 return;
14019
14020 trace_cfg80211_notify_new_peer_candidate(dev, addr);
14021
14022 msg = nlmsg_new(100 + ie_len, gfp);
14023 if (!msg)
14024 return;
14025
14026 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
14027 if (!hdr) {
14028 nlmsg_free(msg);
14029 return;
14030 }
14031
14032 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14033 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14034 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14035 (ie_len && ie &&
14036 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
14037 goto nla_put_failure;
14038
14039 genlmsg_end(msg, hdr);
14040
14041 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14042 NL80211_MCGRP_MLME, gfp);
14043 return;
14044
14045 nla_put_failure:
14046 genlmsg_cancel(msg, hdr);
14047 nlmsg_free(msg);
14048 }
14049 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
14050
14051 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
14052 struct net_device *netdev, const u8 *addr,
14053 enum nl80211_key_type key_type, int key_id,
14054 const u8 *tsc, gfp_t gfp)
14055 {
14056 struct sk_buff *msg;
14057 void *hdr;
14058
14059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14060 if (!msg)
14061 return;
14062
14063 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
14064 if (!hdr) {
14065 nlmsg_free(msg);
14066 return;
14067 }
14068
14069 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14070 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14071 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
14072 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
14073 (key_id != -1 &&
14074 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
14075 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
14076 goto nla_put_failure;
14077
14078 genlmsg_end(msg, hdr);
14079
14080 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14081 NL80211_MCGRP_MLME, gfp);
14082 return;
14083
14084 nla_put_failure:
14085 genlmsg_cancel(msg, hdr);
14086 nlmsg_free(msg);
14087 }
14088
14089 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
14090 struct ieee80211_channel *channel_before,
14091 struct ieee80211_channel *channel_after)
14092 {
14093 struct sk_buff *msg;
14094 void *hdr;
14095 struct nlattr *nl_freq;
14096
14097 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
14098 if (!msg)
14099 return;
14100
14101 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
14102 if (!hdr) {
14103 nlmsg_free(msg);
14104 return;
14105 }
14106
14107 /*
14108 * Since we are applying the beacon hint to a wiphy we know its
14109 * wiphy_idx is valid
14110 */
14111 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
14112 goto nla_put_failure;
14113
14114 /* Before */
14115 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
14116 if (!nl_freq)
14117 goto nla_put_failure;
14118 if (nl80211_msg_put_channel(msg, channel_before, false))
14119 goto nla_put_failure;
14120 nla_nest_end(msg, nl_freq);
14121
14122 /* After */
14123 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
14124 if (!nl_freq)
14125 goto nla_put_failure;
14126 if (nl80211_msg_put_channel(msg, channel_after, false))
14127 goto nla_put_failure;
14128 nla_nest_end(msg, nl_freq);
14129
14130 genlmsg_end(msg, hdr);
14131
14132 rcu_read_lock();
14133 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
14134 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
14135 rcu_read_unlock();
14136
14137 return;
14138
14139 nla_put_failure:
14140 genlmsg_cancel(msg, hdr);
14141 nlmsg_free(msg);
14142 }
14143
14144 static void nl80211_send_remain_on_chan_event(
14145 int cmd, struct cfg80211_registered_device *rdev,
14146 struct wireless_dev *wdev, u64 cookie,
14147 struct ieee80211_channel *chan,
14148 unsigned int duration, gfp_t gfp)
14149 {
14150 struct sk_buff *msg;
14151 void *hdr;
14152
14153 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14154 if (!msg)
14155 return;
14156
14157 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14158 if (!hdr) {
14159 nlmsg_free(msg);
14160 return;
14161 }
14162
14163 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14164 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14165 wdev->netdev->ifindex)) ||
14166 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14167 NL80211_ATTR_PAD) ||
14168 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
14169 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
14170 NL80211_CHAN_NO_HT) ||
14171 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14172 NL80211_ATTR_PAD))
14173 goto nla_put_failure;
14174
14175 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
14176 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
14177 goto nla_put_failure;
14178
14179 genlmsg_end(msg, hdr);
14180
14181 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14182 NL80211_MCGRP_MLME, gfp);
14183 return;
14184
14185 nla_put_failure:
14186 genlmsg_cancel(msg, hdr);
14187 nlmsg_free(msg);
14188 }
14189
14190 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
14191 struct ieee80211_channel *chan,
14192 unsigned int duration, gfp_t gfp)
14193 {
14194 struct wiphy *wiphy = wdev->wiphy;
14195 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14196
14197 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
14198 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
14199 rdev, wdev, cookie, chan,
14200 duration, gfp);
14201 }
14202 EXPORT_SYMBOL(cfg80211_ready_on_channel);
14203
14204 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
14205 struct ieee80211_channel *chan,
14206 gfp_t gfp)
14207 {
14208 struct wiphy *wiphy = wdev->wiphy;
14209 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14210
14211 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
14212 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14213 rdev, wdev, cookie, chan, 0, gfp);
14214 }
14215 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
14216
14217 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
14218 struct station_info *sinfo, gfp_t gfp)
14219 {
14220 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14221 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14222 struct sk_buff *msg;
14223
14224 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
14225
14226 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14227 if (!msg)
14228 return;
14229
14230 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
14231 rdev, dev, mac_addr, sinfo) < 0) {
14232 nlmsg_free(msg);
14233 return;
14234 }
14235
14236 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14237 NL80211_MCGRP_MLME, gfp);
14238 }
14239 EXPORT_SYMBOL(cfg80211_new_sta);
14240
14241 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
14242 struct station_info *sinfo, gfp_t gfp)
14243 {
14244 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14245 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14246 struct sk_buff *msg;
14247 struct station_info empty_sinfo = {};
14248
14249 if (!sinfo)
14250 sinfo = &empty_sinfo;
14251
14252 trace_cfg80211_del_sta(dev, mac_addr);
14253
14254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14255 if (!msg)
14256 return;
14257
14258 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
14259 rdev, dev, mac_addr, sinfo) < 0) {
14260 nlmsg_free(msg);
14261 return;
14262 }
14263
14264 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14265 NL80211_MCGRP_MLME, gfp);
14266 }
14267 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
14268
14269 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
14270 enum nl80211_connect_failed_reason reason,
14271 gfp_t gfp)
14272 {
14273 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
14274 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14275 struct sk_buff *msg;
14276 void *hdr;
14277
14278 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
14279 if (!msg)
14280 return;
14281
14282 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
14283 if (!hdr) {
14284 nlmsg_free(msg);
14285 return;
14286 }
14287
14288 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14289 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
14290 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
14291 goto nla_put_failure;
14292
14293 genlmsg_end(msg, hdr);
14294
14295 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14296 NL80211_MCGRP_MLME, gfp);
14297 return;
14298
14299 nla_put_failure:
14300 genlmsg_cancel(msg, hdr);
14301 nlmsg_free(msg);
14302 }
14303 EXPORT_SYMBOL(cfg80211_conn_failed);
14304
14305 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
14306 const u8 *addr, gfp_t gfp)
14307 {
14308 struct wireless_dev *wdev = dev->ieee80211_ptr;
14309 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14310 struct sk_buff *msg;
14311 void *hdr;
14312 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
14313
14314 if (!nlportid)
14315 return false;
14316
14317 msg = nlmsg_new(100, gfp);
14318 if (!msg)
14319 return true;
14320
14321 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14322 if (!hdr) {
14323 nlmsg_free(msg);
14324 return true;
14325 }
14326
14327 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14328 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14329 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
14330 goto nla_put_failure;
14331
14332 genlmsg_end(msg, hdr);
14333 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14334 return true;
14335
14336 nla_put_failure:
14337 genlmsg_cancel(msg, hdr);
14338 nlmsg_free(msg);
14339 return true;
14340 }
14341
14342 bool cfg80211_rx_spurious_frame(struct net_device *dev,
14343 const u8 *addr, gfp_t gfp)
14344 {
14345 struct wireless_dev *wdev = dev->ieee80211_ptr;
14346 bool ret;
14347
14348 trace_cfg80211_rx_spurious_frame(dev, addr);
14349
14350 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14351 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
14352 trace_cfg80211_return_bool(false);
14353 return false;
14354 }
14355 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
14356 addr, gfp);
14357 trace_cfg80211_return_bool(ret);
14358 return ret;
14359 }
14360 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
14361
14362 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
14363 const u8 *addr, gfp_t gfp)
14364 {
14365 struct wireless_dev *wdev = dev->ieee80211_ptr;
14366 bool ret;
14367
14368 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
14369
14370 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
14371 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
14372 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
14373 trace_cfg80211_return_bool(false);
14374 return false;
14375 }
14376 ret = __nl80211_unexpected_frame(dev,
14377 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
14378 addr, gfp);
14379 trace_cfg80211_return_bool(ret);
14380 return ret;
14381 }
14382 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
14383
14384 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
14385 struct wireless_dev *wdev, u32 nlportid,
14386 int freq, int sig_dbm,
14387 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
14388 {
14389 struct net_device *netdev = wdev->netdev;
14390 struct sk_buff *msg;
14391 void *hdr;
14392
14393 msg = nlmsg_new(100 + len, gfp);
14394 if (!msg)
14395 return -ENOMEM;
14396
14397 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14398 if (!hdr) {
14399 nlmsg_free(msg);
14400 return -ENOMEM;
14401 }
14402
14403 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14404 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14405 netdev->ifindex)) ||
14406 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14407 NL80211_ATTR_PAD) ||
14408 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
14409 (sig_dbm &&
14410 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14411 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14412 (flags &&
14413 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
14414 goto nla_put_failure;
14415
14416 genlmsg_end(msg, hdr);
14417
14418 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
14419
14420 nla_put_failure:
14421 genlmsg_cancel(msg, hdr);
14422 nlmsg_free(msg);
14423 return -ENOBUFS;
14424 }
14425
14426 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
14427 const u8 *buf, size_t len, bool ack, gfp_t gfp)
14428 {
14429 struct wiphy *wiphy = wdev->wiphy;
14430 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14431 struct net_device *netdev = wdev->netdev;
14432 struct sk_buff *msg;
14433 void *hdr;
14434
14435 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
14436
14437 msg = nlmsg_new(100 + len, gfp);
14438 if (!msg)
14439 return;
14440
14441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
14442 if (!hdr) {
14443 nlmsg_free(msg);
14444 return;
14445 }
14446
14447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14448 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14449 netdev->ifindex)) ||
14450 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14451 NL80211_ATTR_PAD) ||
14452 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
14453 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14454 NL80211_ATTR_PAD) ||
14455 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
14456 goto nla_put_failure;
14457
14458 genlmsg_end(msg, hdr);
14459
14460 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14461 NL80211_MCGRP_MLME, gfp);
14462 return;
14463
14464 nla_put_failure:
14465 genlmsg_cancel(msg, hdr);
14466 nlmsg_free(msg);
14467 }
14468 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
14469
14470 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
14471 const char *mac, gfp_t gfp)
14472 {
14473 struct wireless_dev *wdev = dev->ieee80211_ptr;
14474 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14475 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14476 void **cb;
14477
14478 if (!msg)
14479 return NULL;
14480
14481 cb = (void **)msg->cb;
14482
14483 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
14484 if (!cb[0]) {
14485 nlmsg_free(msg);
14486 return NULL;
14487 }
14488
14489 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14490 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14491 goto nla_put_failure;
14492
14493 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
14494 goto nla_put_failure;
14495
14496 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
14497 if (!cb[1])
14498 goto nla_put_failure;
14499
14500 cb[2] = rdev;
14501
14502 return msg;
14503 nla_put_failure:
14504 nlmsg_free(msg);
14505 return NULL;
14506 }
14507
14508 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
14509 {
14510 void **cb = (void **)msg->cb;
14511 struct cfg80211_registered_device *rdev = cb[2];
14512
14513 nla_nest_end(msg, cb[1]);
14514 genlmsg_end(msg, cb[0]);
14515
14516 memset(msg->cb, 0, sizeof(msg->cb));
14517
14518 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14519 NL80211_MCGRP_MLME, gfp);
14520 }
14521
14522 void cfg80211_cqm_rssi_notify(struct net_device *dev,
14523 enum nl80211_cqm_rssi_threshold_event rssi_event,
14524 s32 rssi_level, gfp_t gfp)
14525 {
14526 struct sk_buff *msg;
14527 struct wireless_dev *wdev = dev->ieee80211_ptr;
14528 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14529
14530 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
14531
14532 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
14533 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
14534 return;
14535
14536 if (wdev->cqm_config) {
14537 wdev->cqm_config->last_rssi_event_value = rssi_level;
14538
14539 cfg80211_cqm_rssi_update(rdev, dev);
14540
14541 if (rssi_level == 0)
14542 rssi_level = wdev->cqm_config->last_rssi_event_value;
14543 }
14544
14545 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14546 if (!msg)
14547 return;
14548
14549 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
14550 rssi_event))
14551 goto nla_put_failure;
14552
14553 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
14554 rssi_level))
14555 goto nla_put_failure;
14556
14557 cfg80211_send_cqm(msg, gfp);
14558
14559 return;
14560
14561 nla_put_failure:
14562 nlmsg_free(msg);
14563 }
14564 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
14565
14566 void cfg80211_cqm_txe_notify(struct net_device *dev,
14567 const u8 *peer, u32 num_packets,
14568 u32 rate, u32 intvl, gfp_t gfp)
14569 {
14570 struct sk_buff *msg;
14571
14572 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14573 if (!msg)
14574 return;
14575
14576 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
14577 goto nla_put_failure;
14578
14579 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
14580 goto nla_put_failure;
14581
14582 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
14583 goto nla_put_failure;
14584
14585 cfg80211_send_cqm(msg, gfp);
14586 return;
14587
14588 nla_put_failure:
14589 nlmsg_free(msg);
14590 }
14591 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
14592
14593 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
14594 const u8 *peer, u32 num_packets, gfp_t gfp)
14595 {
14596 struct sk_buff *msg;
14597
14598 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
14599
14600 msg = cfg80211_prepare_cqm(dev, peer, gfp);
14601 if (!msg)
14602 return;
14603
14604 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
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_pktloss_notify);
14614
14615 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
14616 {
14617 struct sk_buff *msg;
14618
14619 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
14620 if (!msg)
14621 return;
14622
14623 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
14624 goto nla_put_failure;
14625
14626 cfg80211_send_cqm(msg, gfp);
14627 return;
14628
14629 nla_put_failure:
14630 nlmsg_free(msg);
14631 }
14632 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
14633
14634 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
14635 struct net_device *netdev, const u8 *bssid,
14636 const u8 *replay_ctr, gfp_t gfp)
14637 {
14638 struct sk_buff *msg;
14639 struct nlattr *rekey_attr;
14640 void *hdr;
14641
14642 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14643 if (!msg)
14644 return;
14645
14646 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
14647 if (!hdr) {
14648 nlmsg_free(msg);
14649 return;
14650 }
14651
14652 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14653 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14654 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
14655 goto nla_put_failure;
14656
14657 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
14658 if (!rekey_attr)
14659 goto nla_put_failure;
14660
14661 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
14662 NL80211_REPLAY_CTR_LEN, replay_ctr))
14663 goto nla_put_failure;
14664
14665 nla_nest_end(msg, rekey_attr);
14666
14667 genlmsg_end(msg, hdr);
14668
14669 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14670 NL80211_MCGRP_MLME, gfp);
14671 return;
14672
14673 nla_put_failure:
14674 genlmsg_cancel(msg, hdr);
14675 nlmsg_free(msg);
14676 }
14677
14678 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
14679 const u8 *replay_ctr, gfp_t gfp)
14680 {
14681 struct wireless_dev *wdev = dev->ieee80211_ptr;
14682 struct wiphy *wiphy = wdev->wiphy;
14683 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14684
14685 trace_cfg80211_gtk_rekey_notify(dev, bssid);
14686 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
14687 }
14688 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
14689
14690 static void
14691 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
14692 struct net_device *netdev, int index,
14693 const u8 *bssid, bool preauth, gfp_t gfp)
14694 {
14695 struct sk_buff *msg;
14696 struct nlattr *attr;
14697 void *hdr;
14698
14699 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14700 if (!msg)
14701 return;
14702
14703 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
14704 if (!hdr) {
14705 nlmsg_free(msg);
14706 return;
14707 }
14708
14709 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14710 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14711 goto nla_put_failure;
14712
14713 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
14714 if (!attr)
14715 goto nla_put_failure;
14716
14717 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
14718 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
14719 (preauth &&
14720 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
14721 goto nla_put_failure;
14722
14723 nla_nest_end(msg, attr);
14724
14725 genlmsg_end(msg, hdr);
14726
14727 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14728 NL80211_MCGRP_MLME, gfp);
14729 return;
14730
14731 nla_put_failure:
14732 genlmsg_cancel(msg, hdr);
14733 nlmsg_free(msg);
14734 }
14735
14736 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
14737 const u8 *bssid, bool preauth, gfp_t gfp)
14738 {
14739 struct wireless_dev *wdev = dev->ieee80211_ptr;
14740 struct wiphy *wiphy = wdev->wiphy;
14741 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14742
14743 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
14744 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
14745 }
14746 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
14747
14748 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
14749 struct net_device *netdev,
14750 struct cfg80211_chan_def *chandef,
14751 gfp_t gfp,
14752 enum nl80211_commands notif,
14753 u8 count)
14754 {
14755 struct sk_buff *msg;
14756 void *hdr;
14757
14758 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14759 if (!msg)
14760 return;
14761
14762 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
14763 if (!hdr) {
14764 nlmsg_free(msg);
14765 return;
14766 }
14767
14768 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
14769 goto nla_put_failure;
14770
14771 if (nl80211_send_chandef(msg, chandef))
14772 goto nla_put_failure;
14773
14774 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
14775 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
14776 goto nla_put_failure;
14777
14778 genlmsg_end(msg, hdr);
14779
14780 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14781 NL80211_MCGRP_MLME, gfp);
14782 return;
14783
14784 nla_put_failure:
14785 genlmsg_cancel(msg, hdr);
14786 nlmsg_free(msg);
14787 }
14788
14789 void cfg80211_ch_switch_notify(struct net_device *dev,
14790 struct cfg80211_chan_def *chandef)
14791 {
14792 struct wireless_dev *wdev = dev->ieee80211_ptr;
14793 struct wiphy *wiphy = wdev->wiphy;
14794 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14795
14796 ASSERT_WDEV_LOCK(wdev);
14797
14798 trace_cfg80211_ch_switch_notify(dev, chandef);
14799
14800 wdev->chandef = *chandef;
14801 wdev->preset_chandef = *chandef;
14802 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14803 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
14804 }
14805 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
14806
14807 void cfg80211_ch_switch_started_notify(struct net_device *dev,
14808 struct cfg80211_chan_def *chandef,
14809 u8 count)
14810 {
14811 struct wireless_dev *wdev = dev->ieee80211_ptr;
14812 struct wiphy *wiphy = wdev->wiphy;
14813 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14814
14815 trace_cfg80211_ch_switch_started_notify(dev, chandef);
14816
14817 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
14818 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
14819 }
14820 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
14821
14822 void
14823 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
14824 const struct cfg80211_chan_def *chandef,
14825 enum nl80211_radar_event event,
14826 struct net_device *netdev, gfp_t gfp)
14827 {
14828 struct sk_buff *msg;
14829 void *hdr;
14830
14831 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14832 if (!msg)
14833 return;
14834
14835 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
14836 if (!hdr) {
14837 nlmsg_free(msg);
14838 return;
14839 }
14840
14841 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
14842 goto nla_put_failure;
14843
14844 /* NOP and radar events don't need a netdev parameter */
14845 if (netdev) {
14846 struct wireless_dev *wdev = netdev->ieee80211_ptr;
14847
14848 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
14849 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14850 NL80211_ATTR_PAD))
14851 goto nla_put_failure;
14852 }
14853
14854 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
14855 goto nla_put_failure;
14856
14857 if (nl80211_send_chandef(msg, chandef))
14858 goto nla_put_failure;
14859
14860 genlmsg_end(msg, hdr);
14861
14862 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14863 NL80211_MCGRP_MLME, gfp);
14864 return;
14865
14866 nla_put_failure:
14867 genlmsg_cancel(msg, hdr);
14868 nlmsg_free(msg);
14869 }
14870
14871 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
14872 u64 cookie, bool acked, gfp_t gfp)
14873 {
14874 struct wireless_dev *wdev = dev->ieee80211_ptr;
14875 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
14876 struct sk_buff *msg;
14877 void *hdr;
14878
14879 trace_cfg80211_probe_status(dev, addr, cookie, acked);
14880
14881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14882
14883 if (!msg)
14884 return;
14885
14886 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
14887 if (!hdr) {
14888 nlmsg_free(msg);
14889 return;
14890 }
14891
14892 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14893 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
14894 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
14895 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14896 NL80211_ATTR_PAD) ||
14897 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
14898 goto nla_put_failure;
14899
14900 genlmsg_end(msg, hdr);
14901
14902 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14903 NL80211_MCGRP_MLME, gfp);
14904 return;
14905
14906 nla_put_failure:
14907 genlmsg_cancel(msg, hdr);
14908 nlmsg_free(msg);
14909 }
14910 EXPORT_SYMBOL(cfg80211_probe_status);
14911
14912 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
14913 const u8 *frame, size_t len,
14914 int freq, int sig_dbm)
14915 {
14916 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14917 struct sk_buff *msg;
14918 void *hdr;
14919 struct cfg80211_beacon_registration *reg;
14920
14921 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
14922
14923 spin_lock_bh(&rdev->beacon_registrations_lock);
14924 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14925 msg = nlmsg_new(len + 100, GFP_ATOMIC);
14926 if (!msg) {
14927 spin_unlock_bh(&rdev->beacon_registrations_lock);
14928 return;
14929 }
14930
14931 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
14932 if (!hdr)
14933 goto nla_put_failure;
14934
14935 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14936 (freq &&
14937 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
14938 (sig_dbm &&
14939 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
14940 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
14941 goto nla_put_failure;
14942
14943 genlmsg_end(msg, hdr);
14944
14945 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
14946 }
14947 spin_unlock_bh(&rdev->beacon_registrations_lock);
14948 return;
14949
14950 nla_put_failure:
14951 spin_unlock_bh(&rdev->beacon_registrations_lock);
14952 if (hdr)
14953 genlmsg_cancel(msg, hdr);
14954 nlmsg_free(msg);
14955 }
14956 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
14957
14958 #ifdef CONFIG_PM
14959 static int cfg80211_net_detect_results(struct sk_buff *msg,
14960 struct cfg80211_wowlan_wakeup *wakeup)
14961 {
14962 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
14963 struct nlattr *nl_results, *nl_match, *nl_freqs;
14964 int i, j;
14965
14966 nl_results = nla_nest_start(
14967 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
14968 if (!nl_results)
14969 return -EMSGSIZE;
14970
14971 for (i = 0; i < nd->n_matches; i++) {
14972 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
14973
14974 nl_match = nla_nest_start(msg, i);
14975 if (!nl_match)
14976 break;
14977
14978 /* The SSID attribute is optional in nl80211, but for
14979 * simplicity reasons it's always present in the
14980 * cfg80211 structure. If a driver can't pass the
14981 * SSID, that needs to be changed. A zero length SSID
14982 * is still a valid SSID (wildcard), so it cannot be
14983 * used for this purpose.
14984 */
14985 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
14986 match->ssid.ssid)) {
14987 nla_nest_cancel(msg, nl_match);
14988 goto out;
14989 }
14990
14991 if (match->n_channels) {
14992 nl_freqs = nla_nest_start(
14993 msg, NL80211_ATTR_SCAN_FREQUENCIES);
14994 if (!nl_freqs) {
14995 nla_nest_cancel(msg, nl_match);
14996 goto out;
14997 }
14998
14999 for (j = 0; j < match->n_channels; j++) {
15000 if (nla_put_u32(msg, j, match->channels[j])) {
15001 nla_nest_cancel(msg, nl_freqs);
15002 nla_nest_cancel(msg, nl_match);
15003 goto out;
15004 }
15005 }
15006
15007 nla_nest_end(msg, nl_freqs);
15008 }
15009
15010 nla_nest_end(msg, nl_match);
15011 }
15012
15013 out:
15014 nla_nest_end(msg, nl_results);
15015 return 0;
15016 }
15017
15018 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
15019 struct cfg80211_wowlan_wakeup *wakeup,
15020 gfp_t gfp)
15021 {
15022 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15023 struct sk_buff *msg;
15024 void *hdr;
15025 int size = 200;
15026
15027 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
15028
15029 if (wakeup)
15030 size += wakeup->packet_present_len;
15031
15032 msg = nlmsg_new(size, gfp);
15033 if (!msg)
15034 return;
15035
15036 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
15037 if (!hdr)
15038 goto free_msg;
15039
15040 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15041 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15042 NL80211_ATTR_PAD))
15043 goto free_msg;
15044
15045 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15046 wdev->netdev->ifindex))
15047 goto free_msg;
15048
15049 if (wakeup) {
15050 struct nlattr *reasons;
15051
15052 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
15053 if (!reasons)
15054 goto free_msg;
15055
15056 if (wakeup->disconnect &&
15057 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
15058 goto free_msg;
15059 if (wakeup->magic_pkt &&
15060 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
15061 goto free_msg;
15062 if (wakeup->gtk_rekey_failure &&
15063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
15064 goto free_msg;
15065 if (wakeup->eap_identity_req &&
15066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
15067 goto free_msg;
15068 if (wakeup->four_way_handshake &&
15069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
15070 goto free_msg;
15071 if (wakeup->rfkill_release &&
15072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
15073 goto free_msg;
15074
15075 if (wakeup->pattern_idx >= 0 &&
15076 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
15077 wakeup->pattern_idx))
15078 goto free_msg;
15079
15080 if (wakeup->tcp_match &&
15081 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
15082 goto free_msg;
15083
15084 if (wakeup->tcp_connlost &&
15085 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
15086 goto free_msg;
15087
15088 if (wakeup->tcp_nomoretokens &&
15089 nla_put_flag(msg,
15090 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
15091 goto free_msg;
15092
15093 if (wakeup->packet) {
15094 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
15095 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
15096
15097 if (!wakeup->packet_80211) {
15098 pkt_attr =
15099 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
15100 len_attr =
15101 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
15102 }
15103
15104 if (wakeup->packet_len &&
15105 nla_put_u32(msg, len_attr, wakeup->packet_len))
15106 goto free_msg;
15107
15108 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
15109 wakeup->packet))
15110 goto free_msg;
15111 }
15112
15113 if (wakeup->net_detect &&
15114 cfg80211_net_detect_results(msg, wakeup))
15115 goto free_msg;
15116
15117 nla_nest_end(msg, reasons);
15118 }
15119
15120 genlmsg_end(msg, hdr);
15121
15122 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15123 NL80211_MCGRP_MLME, gfp);
15124 return;
15125
15126 free_msg:
15127 nlmsg_free(msg);
15128 }
15129 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
15130 #endif
15131
15132 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
15133 enum nl80211_tdls_operation oper,
15134 u16 reason_code, gfp_t gfp)
15135 {
15136 struct wireless_dev *wdev = dev->ieee80211_ptr;
15137 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15138 struct sk_buff *msg;
15139 void *hdr;
15140
15141 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
15142 reason_code);
15143
15144 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15145 if (!msg)
15146 return;
15147
15148 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
15149 if (!hdr) {
15150 nlmsg_free(msg);
15151 return;
15152 }
15153
15154 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15155 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15156 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
15157 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
15158 (reason_code > 0 &&
15159 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
15160 goto nla_put_failure;
15161
15162 genlmsg_end(msg, hdr);
15163
15164 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15165 NL80211_MCGRP_MLME, gfp);
15166 return;
15167
15168 nla_put_failure:
15169 genlmsg_cancel(msg, hdr);
15170 nlmsg_free(msg);
15171 }
15172 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
15173
15174 static int nl80211_netlink_notify(struct notifier_block * nb,
15175 unsigned long state,
15176 void *_notify)
15177 {
15178 struct netlink_notify *notify = _notify;
15179 struct cfg80211_registered_device *rdev;
15180 struct wireless_dev *wdev;
15181 struct cfg80211_beacon_registration *reg, *tmp;
15182
15183 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
15184 return NOTIFY_DONE;
15185
15186 rcu_read_lock();
15187
15188 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
15189 struct cfg80211_sched_scan_request *sched_scan_req;
15190
15191 list_for_each_entry_rcu(sched_scan_req,
15192 &rdev->sched_scan_req_list,
15193 list) {
15194 if (sched_scan_req->owner_nlportid == notify->portid) {
15195 sched_scan_req->nl_owner_dead = true;
15196 schedule_work(&rdev->sched_scan_stop_wk);
15197 }
15198 }
15199
15200 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
15201 cfg80211_mlme_unregister_socket(wdev, notify->portid);
15202
15203 if (wdev->owner_nlportid == notify->portid) {
15204 wdev->nl_owner_dead = true;
15205 schedule_work(&rdev->destroy_work);
15206 } else if (wdev->conn_owner_nlportid == notify->portid) {
15207 schedule_work(&wdev->disconnect_wk);
15208 }
15209 }
15210
15211 spin_lock_bh(&rdev->beacon_registrations_lock);
15212 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
15213 list) {
15214 if (reg->nlportid == notify->portid) {
15215 list_del(&reg->list);
15216 kfree(reg);
15217 break;
15218 }
15219 }
15220 spin_unlock_bh(&rdev->beacon_registrations_lock);
15221 }
15222
15223 rcu_read_unlock();
15224
15225 /*
15226 * It is possible that the user space process that is controlling the
15227 * indoor setting disappeared, so notify the regulatory core.
15228 */
15229 regulatory_netlink_notify(notify->portid);
15230 return NOTIFY_OK;
15231 }
15232
15233 static struct notifier_block nl80211_netlink_notifier = {
15234 .notifier_call = nl80211_netlink_notify,
15235 };
15236
15237 void cfg80211_ft_event(struct net_device *netdev,
15238 struct cfg80211_ft_event_params *ft_event)
15239 {
15240 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
15241 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15242 struct sk_buff *msg;
15243 void *hdr;
15244
15245 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
15246
15247 if (!ft_event->target_ap)
15248 return;
15249
15250 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL);
15251 if (!msg)
15252 return;
15253
15254 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
15255 if (!hdr)
15256 goto out;
15257
15258 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15259 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15260 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
15261 goto out;
15262
15263 if (ft_event->ies &&
15264 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
15265 goto out;
15266 if (ft_event->ric_ies &&
15267 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
15268 ft_event->ric_ies))
15269 goto out;
15270
15271 genlmsg_end(msg, hdr);
15272
15273 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15274 NL80211_MCGRP_MLME, GFP_KERNEL);
15275 return;
15276 out:
15277 nlmsg_free(msg);
15278 }
15279 EXPORT_SYMBOL(cfg80211_ft_event);
15280
15281 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
15282 {
15283 struct cfg80211_registered_device *rdev;
15284 struct sk_buff *msg;
15285 void *hdr;
15286 u32 nlportid;
15287
15288 rdev = wiphy_to_rdev(wdev->wiphy);
15289 if (!rdev->crit_proto_nlportid)
15290 return;
15291
15292 nlportid = rdev->crit_proto_nlportid;
15293 rdev->crit_proto_nlportid = 0;
15294
15295 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15296 if (!msg)
15297 return;
15298
15299 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
15300 if (!hdr)
15301 goto nla_put_failure;
15302
15303 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15304 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15305 NL80211_ATTR_PAD))
15306 goto nla_put_failure;
15307
15308 genlmsg_end(msg, hdr);
15309
15310 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15311 return;
15312
15313 nla_put_failure:
15314 if (hdr)
15315 genlmsg_cancel(msg, hdr);
15316 nlmsg_free(msg);
15317 }
15318 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
15319
15320 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
15321 {
15322 struct wiphy *wiphy = wdev->wiphy;
15323 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15324 struct sk_buff *msg;
15325 void *hdr;
15326
15327 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15328 if (!msg)
15329 return;
15330
15331 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
15332 if (!hdr)
15333 goto out;
15334
15335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15336 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
15337 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15338 NL80211_ATTR_PAD))
15339 goto out;
15340
15341 genlmsg_end(msg, hdr);
15342
15343 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
15344 NL80211_MCGRP_MLME, GFP_KERNEL);
15345 return;
15346 out:
15347 nlmsg_free(msg);
15348 }
15349
15350 /* initialisation/exit functions */
15351
15352 int __init nl80211_init(void)
15353 {
15354 int err;
15355
15356 err = genl_register_family(&nl80211_fam);
15357 if (err)
15358 return err;
15359
15360 err = netlink_register_notifier(&nl80211_netlink_notifier);
15361 if (err)
15362 goto err_out;
15363
15364 return 0;
15365 err_out:
15366 genl_unregister_family(&nl80211_fam);
15367 return err;
15368 }
15369
15370 void nl80211_exit(void)
15371 {
15372 netlink_unregister_notifier(&nl80211_netlink_notifier);
15373 genl_unregister_family(&nl80211_fam);
15374 }
ubuntu-bionic-kernel mirror