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[mirror_ubuntu-zesty-kernel.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015-2016 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
38 struct genl_info *info);
39
40 /* the netlink family */
41 static struct genl_family nl80211_fam = {
42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
43 .name = NL80211_GENL_NAME, /* have users key off the name instead */
44 .hdrsize = 0, /* no private header */
45 .version = 1, /* no particular meaning now */
46 .maxattr = NL80211_ATTR_MAX,
47 .netnsok = true,
48 .pre_doit = nl80211_pre_doit,
49 .post_doit = nl80211_post_doit,
50 };
51
52 /* multicast groups */
53 enum nl80211_multicast_groups {
54 NL80211_MCGRP_CONFIG,
55 NL80211_MCGRP_SCAN,
56 NL80211_MCGRP_REGULATORY,
57 NL80211_MCGRP_MLME,
58 NL80211_MCGRP_VENDOR,
59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
60 };
61
62 static const struct genl_multicast_group nl80211_mcgrps[] = {
63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
68 #ifdef CONFIG_NL80211_TESTMODE
69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
70 #endif
71 };
72
73 /* returns ERR_PTR values */
74 static struct wireless_dev *
75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
76 {
77 struct cfg80211_registered_device *rdev;
78 struct wireless_dev *result = NULL;
79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
81 u64 wdev_id;
82 int wiphy_idx = -1;
83 int ifidx = -1;
84
85 ASSERT_RTNL();
86
87 if (!have_ifidx && !have_wdev_id)
88 return ERR_PTR(-EINVAL);
89
90 if (have_ifidx)
91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
92 if (have_wdev_id) {
93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
94 wiphy_idx = wdev_id >> 32;
95 }
96
97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
98 struct wireless_dev *wdev;
99
100 if (wiphy_net(&rdev->wiphy) != netns)
101 continue;
102
103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
104 continue;
105
106 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
107 if (have_ifidx && wdev->netdev &&
108 wdev->netdev->ifindex == ifidx) {
109 result = wdev;
110 break;
111 }
112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
113 result = wdev;
114 break;
115 }
116 }
117
118 if (result)
119 break;
120 }
121
122 if (result)
123 return result;
124 return ERR_PTR(-ENODEV);
125 }
126
127 static struct cfg80211_registered_device *
128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
129 {
130 struct cfg80211_registered_device *rdev = NULL, *tmp;
131 struct net_device *netdev;
132
133 ASSERT_RTNL();
134
135 if (!attrs[NL80211_ATTR_WIPHY] &&
136 !attrs[NL80211_ATTR_IFINDEX] &&
137 !attrs[NL80211_ATTR_WDEV])
138 return ERR_PTR(-EINVAL);
139
140 if (attrs[NL80211_ATTR_WIPHY])
141 rdev = cfg80211_rdev_by_wiphy_idx(
142 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
143
144 if (attrs[NL80211_ATTR_WDEV]) {
145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
146 struct wireless_dev *wdev;
147 bool found = false;
148
149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
150 if (tmp) {
151 /* make sure wdev exists */
152 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
153 if (wdev->identifier != (u32)wdev_id)
154 continue;
155 found = true;
156 break;
157 }
158
159 if (!found)
160 tmp = NULL;
161
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164 rdev = tmp;
165 }
166 }
167
168 if (attrs[NL80211_ATTR_IFINDEX]) {
169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
170
171 netdev = __dev_get_by_index(netns, ifindex);
172 if (netdev) {
173 if (netdev->ieee80211_ptr)
174 tmp = wiphy_to_rdev(
175 netdev->ieee80211_ptr->wiphy);
176 else
177 tmp = NULL;
178
179 /* not wireless device -- return error */
180 if (!tmp)
181 return ERR_PTR(-EINVAL);
182
183 /* mismatch -- return error */
184 if (rdev && tmp != rdev)
185 return ERR_PTR(-EINVAL);
186
187 rdev = tmp;
188 }
189 }
190
191 if (!rdev)
192 return ERR_PTR(-ENODEV);
193
194 if (netns != wiphy_net(&rdev->wiphy))
195 return ERR_PTR(-ENODEV);
196
197 return rdev;
198 }
199
200 /*
201 * This function returns a pointer to the driver
202 * that the genl_info item that is passed refers to.
203 *
204 * The result of this can be a PTR_ERR and hence must
205 * be checked with IS_ERR() for errors.
206 */
207 static struct cfg80211_registered_device *
208 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
209 {
210 return __cfg80211_rdev_from_attrs(netns, info->attrs);
211 }
212
213 /* policy for the attributes */
214 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
215 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
216 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
217 .len = 20-1 },
218 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
219
220 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
221 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
222 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
223 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
224 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
225
226 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
227 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
228 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
230 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
231 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
232
233 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
234 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
235 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
236
237 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
238 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
239
240 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
241 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
242 .len = WLAN_MAX_KEY_LEN },
243 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
244 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
245 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
246 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
247 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
248
249 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
250 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
251 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
252 .len = IEEE80211_MAX_DATA_LEN },
253 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
254 .len = IEEE80211_MAX_DATA_LEN },
255 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
256 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
257 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
258 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
259 .len = NL80211_MAX_SUPP_RATES },
260 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
261 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
262 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
263 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
264 .len = IEEE80211_MAX_MESH_ID_LEN },
265 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
266
267 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
268 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
269
270 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
273 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
274 .len = NL80211_MAX_SUPP_RATES },
275 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
276
277 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
278 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
279
280 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
281
282 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
283 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
284 .len = IEEE80211_MAX_DATA_LEN },
285 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
286 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
287
288 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
289 .len = IEEE80211_MAX_SSID_LEN },
290 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
291 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
292 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
293 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
294 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
295 [NL80211_ATTR_STA_FLAGS2] = {
296 .len = sizeof(struct nl80211_sta_flag_update),
297 },
298 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
299 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
300 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
301 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
302 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
303 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
304 [NL80211_ATTR_PID] = { .type = NLA_U32 },
305 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
306 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
307 .len = WLAN_PMKID_LEN },
308 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
309 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
310 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
311 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
312 .len = IEEE80211_MAX_DATA_LEN },
313 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
314 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
315 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
316 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
317 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
318 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
319 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
320 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
321 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
322 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
323 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
324 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
325 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
326 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
327 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
328 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
329 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
330 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
331 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
332 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
333 .len = IEEE80211_MAX_DATA_LEN },
334 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
335 .len = IEEE80211_MAX_DATA_LEN },
336 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
337 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
338 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
342 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
343 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
344 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
345 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
346 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
347 .len = IEEE80211_MAX_DATA_LEN },
348 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
349 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
350 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
351 .len = NL80211_HT_CAPABILITY_LEN
352 },
353 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
354 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
355 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
356 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
357 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
358 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
359 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
360 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
361 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
362 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
363 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
364 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
365 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
366 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
367 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
368 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
369 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
370 .len = NL80211_VHT_CAPABILITY_LEN,
371 },
372 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
373 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
374 .len = IEEE80211_MAX_DATA_LEN },
375 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
376 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
377 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
378 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
379 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
380 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
381 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
382 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
383 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
384 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
385 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
387 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
388 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
389 .len = IEEE80211_QOS_MAP_LEN_MAX },
390 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
391 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
392 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
393 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
394 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
395 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
396 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
397 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
398 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
399 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
400 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
401 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
402 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
403 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
404 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
405 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
406 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
407 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 },
408 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
409 .len = VHT_MUMIMO_GROUPS_DATA_LEN
410 },
411 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN },
412 };
413
414 /* policy for the key attributes */
415 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
416 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
417 [NL80211_KEY_IDX] = { .type = NLA_U8 },
418 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
419 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
420 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
421 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
422 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
423 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
424 };
425
426 /* policy for the key default flags */
427 static const struct nla_policy
428 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
429 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
430 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
431 };
432
433 /* policy for WoWLAN attributes */
434 static const struct nla_policy
435 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
436 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
437 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
438 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
439 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
440 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
441 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
442 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
443 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
444 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
445 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
446 };
447
448 static const struct nla_policy
449 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
450 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
451 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
452 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
453 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
454 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
455 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
456 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
457 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
458 },
459 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
460 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
461 },
462 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
463 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
464 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
465 };
466
467 /* policy for coalesce rule attributes */
468 static const struct nla_policy
469 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
470 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
471 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
472 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
473 };
474
475 /* policy for GTK rekey offload attributes */
476 static const struct nla_policy
477 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
478 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
479 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
480 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
481 };
482
483 static const struct nla_policy
484 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
485 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
486 .len = IEEE80211_MAX_SSID_LEN },
487 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
488 };
489
490 static const struct nla_policy
491 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
492 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
493 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
494 };
495
496 static const struct nla_policy
497 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
498 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
499 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
500 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
501 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
502 },
503 };
504
505 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
506 struct netlink_callback *cb,
507 struct cfg80211_registered_device **rdev,
508 struct wireless_dev **wdev)
509 {
510 int err;
511
512 rtnl_lock();
513
514 if (!cb->args[0]) {
515 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
516 nl80211_fam.attrbuf, nl80211_fam.maxattr,
517 nl80211_policy);
518 if (err)
519 goto out_unlock;
520
521 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
522 nl80211_fam.attrbuf);
523 if (IS_ERR(*wdev)) {
524 err = PTR_ERR(*wdev);
525 goto out_unlock;
526 }
527 *rdev = wiphy_to_rdev((*wdev)->wiphy);
528 /* 0 is the first index - add 1 to parse only once */
529 cb->args[0] = (*rdev)->wiphy_idx + 1;
530 cb->args[1] = (*wdev)->identifier;
531 } else {
532 /* subtract the 1 again here */
533 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
534 struct wireless_dev *tmp;
535
536 if (!wiphy) {
537 err = -ENODEV;
538 goto out_unlock;
539 }
540 *rdev = wiphy_to_rdev(wiphy);
541 *wdev = NULL;
542
543 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
544 if (tmp->identifier == cb->args[1]) {
545 *wdev = tmp;
546 break;
547 }
548 }
549
550 if (!*wdev) {
551 err = -ENODEV;
552 goto out_unlock;
553 }
554 }
555
556 return 0;
557 out_unlock:
558 rtnl_unlock();
559 return err;
560 }
561
562 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
563 {
564 rtnl_unlock();
565 }
566
567 /* IE validation */
568 static bool is_valid_ie_attr(const struct nlattr *attr)
569 {
570 const u8 *pos;
571 int len;
572
573 if (!attr)
574 return true;
575
576 pos = nla_data(attr);
577 len = nla_len(attr);
578
579 while (len) {
580 u8 elemlen;
581
582 if (len < 2)
583 return false;
584 len -= 2;
585
586 elemlen = pos[1];
587 if (elemlen > len)
588 return false;
589
590 len -= elemlen;
591 pos += 2 + elemlen;
592 }
593
594 return true;
595 }
596
597 /* message building helper */
598 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
599 int flags, u8 cmd)
600 {
601 /* since there is no private header just add the generic one */
602 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
603 }
604
605 static int nl80211_msg_put_channel(struct sk_buff *msg,
606 struct ieee80211_channel *chan,
607 bool large)
608 {
609 /* Some channels must be completely excluded from the
610 * list to protect old user-space tools from breaking
611 */
612 if (!large && chan->flags &
613 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
614 return 0;
615
616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
617 chan->center_freq))
618 goto nla_put_failure;
619
620 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
621 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
622 goto nla_put_failure;
623 if (chan->flags & IEEE80211_CHAN_NO_IR) {
624 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
625 goto nla_put_failure;
626 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
627 goto nla_put_failure;
628 }
629 if (chan->flags & IEEE80211_CHAN_RADAR) {
630 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
631 goto nla_put_failure;
632 if (large) {
633 u32 time;
634
635 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
636
637 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
638 chan->dfs_state))
639 goto nla_put_failure;
640 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
641 time))
642 goto nla_put_failure;
643 if (nla_put_u32(msg,
644 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
645 chan->dfs_cac_ms))
646 goto nla_put_failure;
647 }
648 }
649
650 if (large) {
651 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
652 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
653 goto nla_put_failure;
654 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
655 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
656 goto nla_put_failure;
657 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
658 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
659 goto nla_put_failure;
660 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
661 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
662 goto nla_put_failure;
663 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
664 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
665 goto nla_put_failure;
666 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
667 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
668 goto nla_put_failure;
669 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
670 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
671 goto nla_put_failure;
672 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
673 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
674 goto nla_put_failure;
675 }
676
677 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
678 DBM_TO_MBM(chan->max_power)))
679 goto nla_put_failure;
680
681 return 0;
682
683 nla_put_failure:
684 return -ENOBUFS;
685 }
686
687 /* netlink command implementations */
688
689 struct key_parse {
690 struct key_params p;
691 int idx;
692 int type;
693 bool def, defmgmt;
694 bool def_uni, def_multi;
695 };
696
697 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
698 {
699 struct nlattr *tb[NL80211_KEY_MAX + 1];
700 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
701 nl80211_key_policy);
702 if (err)
703 return err;
704
705 k->def = !!tb[NL80211_KEY_DEFAULT];
706 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
707
708 if (k->def) {
709 k->def_uni = true;
710 k->def_multi = true;
711 }
712 if (k->defmgmt)
713 k->def_multi = true;
714
715 if (tb[NL80211_KEY_IDX])
716 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
717
718 if (tb[NL80211_KEY_DATA]) {
719 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
720 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
721 }
722
723 if (tb[NL80211_KEY_SEQ]) {
724 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
725 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
726 }
727
728 if (tb[NL80211_KEY_CIPHER])
729 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
730
731 if (tb[NL80211_KEY_TYPE]) {
732 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
733 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
734 return -EINVAL;
735 }
736
737 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
738 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
739
740 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
741 tb[NL80211_KEY_DEFAULT_TYPES],
742 nl80211_key_default_policy);
743 if (err)
744 return err;
745
746 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
747 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
748 }
749
750 return 0;
751 }
752
753 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
754 {
755 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
756 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
757 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
758 }
759
760 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
761 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
762 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
763 }
764
765 if (info->attrs[NL80211_ATTR_KEY_IDX])
766 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
767
768 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
769 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
770
771 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
772 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
773
774 if (k->def) {
775 k->def_uni = true;
776 k->def_multi = true;
777 }
778 if (k->defmgmt)
779 k->def_multi = true;
780
781 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
782 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
783 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
784 return -EINVAL;
785 }
786
787 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
788 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
789 int err = nla_parse_nested(
790 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
791 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
792 nl80211_key_default_policy);
793 if (err)
794 return err;
795
796 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
797 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
798 }
799
800 return 0;
801 }
802
803 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
804 {
805 int err;
806
807 memset(k, 0, sizeof(*k));
808 k->idx = -1;
809 k->type = -1;
810
811 if (info->attrs[NL80211_ATTR_KEY])
812 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
813 else
814 err = nl80211_parse_key_old(info, k);
815
816 if (err)
817 return err;
818
819 if (k->def && k->defmgmt)
820 return -EINVAL;
821
822 if (k->defmgmt) {
823 if (k->def_uni || !k->def_multi)
824 return -EINVAL;
825 }
826
827 if (k->idx != -1) {
828 if (k->defmgmt) {
829 if (k->idx < 4 || k->idx > 5)
830 return -EINVAL;
831 } else if (k->def) {
832 if (k->idx < 0 || k->idx > 3)
833 return -EINVAL;
834 } else {
835 if (k->idx < 0 || k->idx > 5)
836 return -EINVAL;
837 }
838 }
839
840 return 0;
841 }
842
843 static struct cfg80211_cached_keys *
844 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
845 struct nlattr *keys, bool *no_ht)
846 {
847 struct key_parse parse;
848 struct nlattr *key;
849 struct cfg80211_cached_keys *result;
850 int rem, err, def = 0;
851
852 result = kzalloc(sizeof(*result), GFP_KERNEL);
853 if (!result)
854 return ERR_PTR(-ENOMEM);
855
856 result->def = -1;
857 result->defmgmt = -1;
858
859 nla_for_each_nested(key, keys, rem) {
860 memset(&parse, 0, sizeof(parse));
861 parse.idx = -1;
862
863 err = nl80211_parse_key_new(key, &parse);
864 if (err)
865 goto error;
866 err = -EINVAL;
867 if (!parse.p.key)
868 goto error;
869 if (parse.idx < 0 || parse.idx > 4)
870 goto error;
871 if (parse.def) {
872 if (def)
873 goto error;
874 def = 1;
875 result->def = parse.idx;
876 if (!parse.def_uni || !parse.def_multi)
877 goto error;
878 } else if (parse.defmgmt)
879 goto error;
880 err = cfg80211_validate_key_settings(rdev, &parse.p,
881 parse.idx, false, NULL);
882 if (err)
883 goto error;
884 result->params[parse.idx].cipher = parse.p.cipher;
885 result->params[parse.idx].key_len = parse.p.key_len;
886 result->params[parse.idx].key = result->data[parse.idx];
887 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
888
889 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
890 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
891 if (no_ht)
892 *no_ht = true;
893 }
894 }
895
896 return result;
897 error:
898 kfree(result);
899 return ERR_PTR(err);
900 }
901
902 static int nl80211_key_allowed(struct wireless_dev *wdev)
903 {
904 ASSERT_WDEV_LOCK(wdev);
905
906 switch (wdev->iftype) {
907 case NL80211_IFTYPE_AP:
908 case NL80211_IFTYPE_AP_VLAN:
909 case NL80211_IFTYPE_P2P_GO:
910 case NL80211_IFTYPE_MESH_POINT:
911 break;
912 case NL80211_IFTYPE_ADHOC:
913 case NL80211_IFTYPE_STATION:
914 case NL80211_IFTYPE_P2P_CLIENT:
915 if (!wdev->current_bss)
916 return -ENOLINK;
917 break;
918 case NL80211_IFTYPE_UNSPECIFIED:
919 case NL80211_IFTYPE_OCB:
920 case NL80211_IFTYPE_MONITOR:
921 case NL80211_IFTYPE_P2P_DEVICE:
922 case NL80211_IFTYPE_WDS:
923 case NUM_NL80211_IFTYPES:
924 return -EINVAL;
925 }
926
927 return 0;
928 }
929
930 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
931 struct nlattr *tb)
932 {
933 struct ieee80211_channel *chan;
934
935 if (tb == NULL)
936 return NULL;
937 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
938 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
939 return NULL;
940 return chan;
941 }
942
943 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
944 {
945 struct nlattr *nl_modes = nla_nest_start(msg, attr);
946 int i;
947
948 if (!nl_modes)
949 goto nla_put_failure;
950
951 i = 0;
952 while (ifmodes) {
953 if ((ifmodes & 1) && nla_put_flag(msg, i))
954 goto nla_put_failure;
955 ifmodes >>= 1;
956 i++;
957 }
958
959 nla_nest_end(msg, nl_modes);
960 return 0;
961
962 nla_put_failure:
963 return -ENOBUFS;
964 }
965
966 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
967 struct sk_buff *msg,
968 bool large)
969 {
970 struct nlattr *nl_combis;
971 int i, j;
972
973 nl_combis = nla_nest_start(msg,
974 NL80211_ATTR_INTERFACE_COMBINATIONS);
975 if (!nl_combis)
976 goto nla_put_failure;
977
978 for (i = 0; i < wiphy->n_iface_combinations; i++) {
979 const struct ieee80211_iface_combination *c;
980 struct nlattr *nl_combi, *nl_limits;
981
982 c = &wiphy->iface_combinations[i];
983
984 nl_combi = nla_nest_start(msg, i + 1);
985 if (!nl_combi)
986 goto nla_put_failure;
987
988 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
989 if (!nl_limits)
990 goto nla_put_failure;
991
992 for (j = 0; j < c->n_limits; j++) {
993 struct nlattr *nl_limit;
994
995 nl_limit = nla_nest_start(msg, j + 1);
996 if (!nl_limit)
997 goto nla_put_failure;
998 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
999 c->limits[j].max))
1000 goto nla_put_failure;
1001 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1002 c->limits[j].types))
1003 goto nla_put_failure;
1004 nla_nest_end(msg, nl_limit);
1005 }
1006
1007 nla_nest_end(msg, nl_limits);
1008
1009 if (c->beacon_int_infra_match &&
1010 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1011 goto nla_put_failure;
1012 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1013 c->num_different_channels) ||
1014 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1015 c->max_interfaces))
1016 goto nla_put_failure;
1017 if (large &&
1018 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1019 c->radar_detect_widths) ||
1020 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1021 c->radar_detect_regions)))
1022 goto nla_put_failure;
1023
1024 nla_nest_end(msg, nl_combi);
1025 }
1026
1027 nla_nest_end(msg, nl_combis);
1028
1029 return 0;
1030 nla_put_failure:
1031 return -ENOBUFS;
1032 }
1033
1034 #ifdef CONFIG_PM
1035 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1036 struct sk_buff *msg)
1037 {
1038 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1039 struct nlattr *nl_tcp;
1040
1041 if (!tcp)
1042 return 0;
1043
1044 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1045 if (!nl_tcp)
1046 return -ENOBUFS;
1047
1048 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1049 tcp->data_payload_max))
1050 return -ENOBUFS;
1051
1052 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1053 tcp->data_payload_max))
1054 return -ENOBUFS;
1055
1056 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1057 return -ENOBUFS;
1058
1059 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1060 sizeof(*tcp->tok), tcp->tok))
1061 return -ENOBUFS;
1062
1063 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1064 tcp->data_interval_max))
1065 return -ENOBUFS;
1066
1067 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1068 tcp->wake_payload_max))
1069 return -ENOBUFS;
1070
1071 nla_nest_end(msg, nl_tcp);
1072 return 0;
1073 }
1074
1075 static int nl80211_send_wowlan(struct sk_buff *msg,
1076 struct cfg80211_registered_device *rdev,
1077 bool large)
1078 {
1079 struct nlattr *nl_wowlan;
1080
1081 if (!rdev->wiphy.wowlan)
1082 return 0;
1083
1084 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1085 if (!nl_wowlan)
1086 return -ENOBUFS;
1087
1088 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1089 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1090 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1091 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1092 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1093 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1094 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1095 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1096 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1097 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1098 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1099 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1100 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1101 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1102 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1103 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1104 return -ENOBUFS;
1105
1106 if (rdev->wiphy.wowlan->n_patterns) {
1107 struct nl80211_pattern_support pat = {
1108 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1109 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1110 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1111 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1112 };
1113
1114 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1115 sizeof(pat), &pat))
1116 return -ENOBUFS;
1117 }
1118
1119 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1120 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1121 rdev->wiphy.wowlan->max_nd_match_sets))
1122 return -ENOBUFS;
1123
1124 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1125 return -ENOBUFS;
1126
1127 nla_nest_end(msg, nl_wowlan);
1128
1129 return 0;
1130 }
1131 #endif
1132
1133 static int nl80211_send_coalesce(struct sk_buff *msg,
1134 struct cfg80211_registered_device *rdev)
1135 {
1136 struct nl80211_coalesce_rule_support rule;
1137
1138 if (!rdev->wiphy.coalesce)
1139 return 0;
1140
1141 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1142 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1143 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1144 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1145 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1146 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1147
1148 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1149 return -ENOBUFS;
1150
1151 return 0;
1152 }
1153
1154 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1155 struct ieee80211_supported_band *sband)
1156 {
1157 struct nlattr *nl_rates, *nl_rate;
1158 struct ieee80211_rate *rate;
1159 int i;
1160
1161 /* add HT info */
1162 if (sband->ht_cap.ht_supported &&
1163 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1164 sizeof(sband->ht_cap.mcs),
1165 &sband->ht_cap.mcs) ||
1166 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1167 sband->ht_cap.cap) ||
1168 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1169 sband->ht_cap.ampdu_factor) ||
1170 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1171 sband->ht_cap.ampdu_density)))
1172 return -ENOBUFS;
1173
1174 /* add VHT info */
1175 if (sband->vht_cap.vht_supported &&
1176 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1177 sizeof(sband->vht_cap.vht_mcs),
1178 &sband->vht_cap.vht_mcs) ||
1179 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1180 sband->vht_cap.cap)))
1181 return -ENOBUFS;
1182
1183 /* add bitrates */
1184 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1185 if (!nl_rates)
1186 return -ENOBUFS;
1187
1188 for (i = 0; i < sband->n_bitrates; i++) {
1189 nl_rate = nla_nest_start(msg, i);
1190 if (!nl_rate)
1191 return -ENOBUFS;
1192
1193 rate = &sband->bitrates[i];
1194 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1195 rate->bitrate))
1196 return -ENOBUFS;
1197 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1198 nla_put_flag(msg,
1199 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1200 return -ENOBUFS;
1201
1202 nla_nest_end(msg, nl_rate);
1203 }
1204
1205 nla_nest_end(msg, nl_rates);
1206
1207 return 0;
1208 }
1209
1210 static int
1211 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1212 const struct ieee80211_txrx_stypes *mgmt_stypes)
1213 {
1214 u16 stypes;
1215 struct nlattr *nl_ftypes, *nl_ifs;
1216 enum nl80211_iftype ift;
1217 int i;
1218
1219 if (!mgmt_stypes)
1220 return 0;
1221
1222 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1223 if (!nl_ifs)
1224 return -ENOBUFS;
1225
1226 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1227 nl_ftypes = nla_nest_start(msg, ift);
1228 if (!nl_ftypes)
1229 return -ENOBUFS;
1230 i = 0;
1231 stypes = mgmt_stypes[ift].tx;
1232 while (stypes) {
1233 if ((stypes & 1) &&
1234 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1235 (i << 4) | IEEE80211_FTYPE_MGMT))
1236 return -ENOBUFS;
1237 stypes >>= 1;
1238 i++;
1239 }
1240 nla_nest_end(msg, nl_ftypes);
1241 }
1242
1243 nla_nest_end(msg, nl_ifs);
1244
1245 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1246 if (!nl_ifs)
1247 return -ENOBUFS;
1248
1249 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1250 nl_ftypes = nla_nest_start(msg, ift);
1251 if (!nl_ftypes)
1252 return -ENOBUFS;
1253 i = 0;
1254 stypes = mgmt_stypes[ift].rx;
1255 while (stypes) {
1256 if ((stypes & 1) &&
1257 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1258 (i << 4) | IEEE80211_FTYPE_MGMT))
1259 return -ENOBUFS;
1260 stypes >>= 1;
1261 i++;
1262 }
1263 nla_nest_end(msg, nl_ftypes);
1264 }
1265 nla_nest_end(msg, nl_ifs);
1266
1267 return 0;
1268 }
1269
1270 struct nl80211_dump_wiphy_state {
1271 s64 filter_wiphy;
1272 long start;
1273 long split_start, band_start, chan_start, capa_start;
1274 bool split;
1275 };
1276
1277 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1278 enum nl80211_commands cmd,
1279 struct sk_buff *msg, u32 portid, u32 seq,
1280 int flags, struct nl80211_dump_wiphy_state *state)
1281 {
1282 void *hdr;
1283 struct nlattr *nl_bands, *nl_band;
1284 struct nlattr *nl_freqs, *nl_freq;
1285 struct nlattr *nl_cmds;
1286 enum nl80211_band band;
1287 struct ieee80211_channel *chan;
1288 int i;
1289 const struct ieee80211_txrx_stypes *mgmt_stypes =
1290 rdev->wiphy.mgmt_stypes;
1291 u32 features;
1292
1293 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1294 if (!hdr)
1295 return -ENOBUFS;
1296
1297 if (WARN_ON(!state))
1298 return -EINVAL;
1299
1300 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1301 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1302 wiphy_name(&rdev->wiphy)) ||
1303 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1304 cfg80211_rdev_list_generation))
1305 goto nla_put_failure;
1306
1307 if (cmd != NL80211_CMD_NEW_WIPHY)
1308 goto finish;
1309
1310 switch (state->split_start) {
1311 case 0:
1312 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1313 rdev->wiphy.retry_short) ||
1314 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1315 rdev->wiphy.retry_long) ||
1316 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1317 rdev->wiphy.frag_threshold) ||
1318 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1319 rdev->wiphy.rts_threshold) ||
1320 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1321 rdev->wiphy.coverage_class) ||
1322 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1323 rdev->wiphy.max_scan_ssids) ||
1324 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1325 rdev->wiphy.max_sched_scan_ssids) ||
1326 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1327 rdev->wiphy.max_scan_ie_len) ||
1328 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1329 rdev->wiphy.max_sched_scan_ie_len) ||
1330 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1331 rdev->wiphy.max_match_sets) ||
1332 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1333 rdev->wiphy.max_sched_scan_plans) ||
1334 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1335 rdev->wiphy.max_sched_scan_plan_interval) ||
1336 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1337 rdev->wiphy.max_sched_scan_plan_iterations))
1338 goto nla_put_failure;
1339
1340 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1341 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1342 goto nla_put_failure;
1343 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1344 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1345 goto nla_put_failure;
1346 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1347 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1348 goto nla_put_failure;
1349 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1350 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1351 goto nla_put_failure;
1352 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1353 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1354 goto nla_put_failure;
1355 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1356 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1357 goto nla_put_failure;
1358 state->split_start++;
1359 if (state->split)
1360 break;
1361 case 1:
1362 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1363 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1364 rdev->wiphy.cipher_suites))
1365 goto nla_put_failure;
1366
1367 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1368 rdev->wiphy.max_num_pmkids))
1369 goto nla_put_failure;
1370
1371 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1372 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1373 goto nla_put_failure;
1374
1375 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1376 rdev->wiphy.available_antennas_tx) ||
1377 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1378 rdev->wiphy.available_antennas_rx))
1379 goto nla_put_failure;
1380
1381 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1382 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1383 rdev->wiphy.probe_resp_offload))
1384 goto nla_put_failure;
1385
1386 if ((rdev->wiphy.available_antennas_tx ||
1387 rdev->wiphy.available_antennas_rx) &&
1388 rdev->ops->get_antenna) {
1389 u32 tx_ant = 0, rx_ant = 0;
1390 int res;
1391
1392 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1393 if (!res) {
1394 if (nla_put_u32(msg,
1395 NL80211_ATTR_WIPHY_ANTENNA_TX,
1396 tx_ant) ||
1397 nla_put_u32(msg,
1398 NL80211_ATTR_WIPHY_ANTENNA_RX,
1399 rx_ant))
1400 goto nla_put_failure;
1401 }
1402 }
1403
1404 state->split_start++;
1405 if (state->split)
1406 break;
1407 case 2:
1408 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1409 rdev->wiphy.interface_modes))
1410 goto nla_put_failure;
1411 state->split_start++;
1412 if (state->split)
1413 break;
1414 case 3:
1415 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1416 if (!nl_bands)
1417 goto nla_put_failure;
1418
1419 for (band = state->band_start;
1420 band < NUM_NL80211_BANDS; band++) {
1421 struct ieee80211_supported_band *sband;
1422
1423 sband = rdev->wiphy.bands[band];
1424
1425 if (!sband)
1426 continue;
1427
1428 nl_band = nla_nest_start(msg, band);
1429 if (!nl_band)
1430 goto nla_put_failure;
1431
1432 switch (state->chan_start) {
1433 case 0:
1434 if (nl80211_send_band_rateinfo(msg, sband))
1435 goto nla_put_failure;
1436 state->chan_start++;
1437 if (state->split)
1438 break;
1439 default:
1440 /* add frequencies */
1441 nl_freqs = nla_nest_start(
1442 msg, NL80211_BAND_ATTR_FREQS);
1443 if (!nl_freqs)
1444 goto nla_put_failure;
1445
1446 for (i = state->chan_start - 1;
1447 i < sband->n_channels;
1448 i++) {
1449 nl_freq = nla_nest_start(msg, i);
1450 if (!nl_freq)
1451 goto nla_put_failure;
1452
1453 chan = &sband->channels[i];
1454
1455 if (nl80211_msg_put_channel(
1456 msg, chan,
1457 state->split))
1458 goto nla_put_failure;
1459
1460 nla_nest_end(msg, nl_freq);
1461 if (state->split)
1462 break;
1463 }
1464 if (i < sband->n_channels)
1465 state->chan_start = i + 2;
1466 else
1467 state->chan_start = 0;
1468 nla_nest_end(msg, nl_freqs);
1469 }
1470
1471 nla_nest_end(msg, nl_band);
1472
1473 if (state->split) {
1474 /* start again here */
1475 if (state->chan_start)
1476 band--;
1477 break;
1478 }
1479 }
1480 nla_nest_end(msg, nl_bands);
1481
1482 if (band < NUM_NL80211_BANDS)
1483 state->band_start = band + 1;
1484 else
1485 state->band_start = 0;
1486
1487 /* if bands & channels are done, continue outside */
1488 if (state->band_start == 0 && state->chan_start == 0)
1489 state->split_start++;
1490 if (state->split)
1491 break;
1492 case 4:
1493 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1494 if (!nl_cmds)
1495 goto nla_put_failure;
1496
1497 i = 0;
1498 #define CMD(op, n) \
1499 do { \
1500 if (rdev->ops->op) { \
1501 i++; \
1502 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1503 goto nla_put_failure; \
1504 } \
1505 } while (0)
1506
1507 CMD(add_virtual_intf, NEW_INTERFACE);
1508 CMD(change_virtual_intf, SET_INTERFACE);
1509 CMD(add_key, NEW_KEY);
1510 CMD(start_ap, START_AP);
1511 CMD(add_station, NEW_STATION);
1512 CMD(add_mpath, NEW_MPATH);
1513 CMD(update_mesh_config, SET_MESH_CONFIG);
1514 CMD(change_bss, SET_BSS);
1515 CMD(auth, AUTHENTICATE);
1516 CMD(assoc, ASSOCIATE);
1517 CMD(deauth, DEAUTHENTICATE);
1518 CMD(disassoc, DISASSOCIATE);
1519 CMD(join_ibss, JOIN_IBSS);
1520 CMD(join_mesh, JOIN_MESH);
1521 CMD(set_pmksa, SET_PMKSA);
1522 CMD(del_pmksa, DEL_PMKSA);
1523 CMD(flush_pmksa, FLUSH_PMKSA);
1524 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1525 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1526 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1527 CMD(mgmt_tx, FRAME);
1528 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1529 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1530 i++;
1531 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1532 goto nla_put_failure;
1533 }
1534 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1535 rdev->ops->join_mesh) {
1536 i++;
1537 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1538 goto nla_put_failure;
1539 }
1540 CMD(set_wds_peer, SET_WDS_PEER);
1541 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1542 CMD(tdls_mgmt, TDLS_MGMT);
1543 CMD(tdls_oper, TDLS_OPER);
1544 }
1545 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1546 CMD(sched_scan_start, START_SCHED_SCAN);
1547 CMD(probe_client, PROBE_CLIENT);
1548 CMD(set_noack_map, SET_NOACK_MAP);
1549 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1550 i++;
1551 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1552 goto nla_put_failure;
1553 }
1554 CMD(start_p2p_device, START_P2P_DEVICE);
1555 CMD(set_mcast_rate, SET_MCAST_RATE);
1556 #ifdef CONFIG_NL80211_TESTMODE
1557 CMD(testmode_cmd, TESTMODE);
1558 #endif
1559 if (state->split) {
1560 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1561 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1562 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1563 CMD(channel_switch, CHANNEL_SWITCH);
1564 CMD(set_qos_map, SET_QOS_MAP);
1565 if (rdev->wiphy.features &
1566 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1567 CMD(add_tx_ts, ADD_TX_TS);
1568 }
1569 /* add into the if now */
1570 #undef CMD
1571
1572 if (rdev->ops->connect || rdev->ops->auth) {
1573 i++;
1574 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1575 goto nla_put_failure;
1576 }
1577
1578 if (rdev->ops->disconnect || rdev->ops->deauth) {
1579 i++;
1580 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1581 goto nla_put_failure;
1582 }
1583
1584 nla_nest_end(msg, nl_cmds);
1585 state->split_start++;
1586 if (state->split)
1587 break;
1588 case 5:
1589 if (rdev->ops->remain_on_channel &&
1590 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1591 nla_put_u32(msg,
1592 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1593 rdev->wiphy.max_remain_on_channel_duration))
1594 goto nla_put_failure;
1595
1596 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1597 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1598 goto nla_put_failure;
1599
1600 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1601 goto nla_put_failure;
1602 state->split_start++;
1603 if (state->split)
1604 break;
1605 case 6:
1606 #ifdef CONFIG_PM
1607 if (nl80211_send_wowlan(msg, rdev, state->split))
1608 goto nla_put_failure;
1609 state->split_start++;
1610 if (state->split)
1611 break;
1612 #else
1613 state->split_start++;
1614 #endif
1615 case 7:
1616 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1617 rdev->wiphy.software_iftypes))
1618 goto nla_put_failure;
1619
1620 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1621 state->split))
1622 goto nla_put_failure;
1623
1624 state->split_start++;
1625 if (state->split)
1626 break;
1627 case 8:
1628 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1629 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1630 rdev->wiphy.ap_sme_capa))
1631 goto nla_put_failure;
1632
1633 features = rdev->wiphy.features;
1634 /*
1635 * We can only add the per-channel limit information if the
1636 * dump is split, otherwise it makes it too big. Therefore
1637 * only advertise it in that case.
1638 */
1639 if (state->split)
1640 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1641 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1642 goto nla_put_failure;
1643
1644 if (rdev->wiphy.ht_capa_mod_mask &&
1645 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1646 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1647 rdev->wiphy.ht_capa_mod_mask))
1648 goto nla_put_failure;
1649
1650 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1651 rdev->wiphy.max_acl_mac_addrs &&
1652 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1653 rdev->wiphy.max_acl_mac_addrs))
1654 goto nla_put_failure;
1655
1656 /*
1657 * Any information below this point is only available to
1658 * applications that can deal with it being split. This
1659 * helps ensure that newly added capabilities don't break
1660 * older tools by overrunning their buffers.
1661 *
1662 * We still increment split_start so that in the split
1663 * case we'll continue with more data in the next round,
1664 * but break unconditionally so unsplit data stops here.
1665 */
1666 state->split_start++;
1667 break;
1668 case 9:
1669 if (rdev->wiphy.extended_capabilities &&
1670 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1671 rdev->wiphy.extended_capabilities_len,
1672 rdev->wiphy.extended_capabilities) ||
1673 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1674 rdev->wiphy.extended_capabilities_len,
1675 rdev->wiphy.extended_capabilities_mask)))
1676 goto nla_put_failure;
1677
1678 if (rdev->wiphy.vht_capa_mod_mask &&
1679 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1680 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1681 rdev->wiphy.vht_capa_mod_mask))
1682 goto nla_put_failure;
1683
1684 state->split_start++;
1685 break;
1686 case 10:
1687 if (nl80211_send_coalesce(msg, rdev))
1688 goto nla_put_failure;
1689
1690 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1691 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1692 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1693 goto nla_put_failure;
1694
1695 if (rdev->wiphy.max_ap_assoc_sta &&
1696 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1697 rdev->wiphy.max_ap_assoc_sta))
1698 goto nla_put_failure;
1699
1700 state->split_start++;
1701 break;
1702 case 11:
1703 if (rdev->wiphy.n_vendor_commands) {
1704 const struct nl80211_vendor_cmd_info *info;
1705 struct nlattr *nested;
1706
1707 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1708 if (!nested)
1709 goto nla_put_failure;
1710
1711 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1712 info = &rdev->wiphy.vendor_commands[i].info;
1713 if (nla_put(msg, i + 1, sizeof(*info), info))
1714 goto nla_put_failure;
1715 }
1716 nla_nest_end(msg, nested);
1717 }
1718
1719 if (rdev->wiphy.n_vendor_events) {
1720 const struct nl80211_vendor_cmd_info *info;
1721 struct nlattr *nested;
1722
1723 nested = nla_nest_start(msg,
1724 NL80211_ATTR_VENDOR_EVENTS);
1725 if (!nested)
1726 goto nla_put_failure;
1727
1728 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1729 info = &rdev->wiphy.vendor_events[i];
1730 if (nla_put(msg, i + 1, sizeof(*info), info))
1731 goto nla_put_failure;
1732 }
1733 nla_nest_end(msg, nested);
1734 }
1735 state->split_start++;
1736 break;
1737 case 12:
1738 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1739 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1740 rdev->wiphy.max_num_csa_counters))
1741 goto nla_put_failure;
1742
1743 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1744 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1745 goto nla_put_failure;
1746
1747 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1748 sizeof(rdev->wiphy.ext_features),
1749 rdev->wiphy.ext_features))
1750 goto nla_put_failure;
1751
1752 if (rdev->wiphy.bss_select_support) {
1753 struct nlattr *nested;
1754 u32 bss_select_support = rdev->wiphy.bss_select_support;
1755
1756 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT);
1757 if (!nested)
1758 goto nla_put_failure;
1759
1760 i = 0;
1761 while (bss_select_support) {
1762 if ((bss_select_support & 1) &&
1763 nla_put_flag(msg, i))
1764 goto nla_put_failure;
1765 i++;
1766 bss_select_support >>= 1;
1767 }
1768 nla_nest_end(msg, nested);
1769 }
1770
1771 state->split_start++;
1772 break;
1773 case 13:
1774 if (rdev->wiphy.num_iftype_ext_capab &&
1775 rdev->wiphy.iftype_ext_capab) {
1776 struct nlattr *nested_ext_capab, *nested;
1777
1778 nested = nla_nest_start(msg,
1779 NL80211_ATTR_IFTYPE_EXT_CAPA);
1780 if (!nested)
1781 goto nla_put_failure;
1782
1783 for (i = state->capa_start;
1784 i < rdev->wiphy.num_iftype_ext_capab; i++) {
1785 const struct wiphy_iftype_ext_capab *capab;
1786
1787 capab = &rdev->wiphy.iftype_ext_capab[i];
1788
1789 nested_ext_capab = nla_nest_start(msg, i);
1790 if (!nested_ext_capab ||
1791 nla_put_u32(msg, NL80211_ATTR_IFTYPE,
1792 capab->iftype) ||
1793 nla_put(msg, NL80211_ATTR_EXT_CAPA,
1794 capab->extended_capabilities_len,
1795 capab->extended_capabilities) ||
1796 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1797 capab->extended_capabilities_len,
1798 capab->extended_capabilities_mask))
1799 goto nla_put_failure;
1800
1801 nla_nest_end(msg, nested_ext_capab);
1802 if (state->split)
1803 break;
1804 }
1805 nla_nest_end(msg, nested);
1806 if (i < rdev->wiphy.num_iftype_ext_capab) {
1807 state->capa_start = i + 1;
1808 break;
1809 }
1810 }
1811
1812 /* done */
1813 state->split_start = 0;
1814 break;
1815 }
1816 finish:
1817 genlmsg_end(msg, hdr);
1818 return 0;
1819
1820 nla_put_failure:
1821 genlmsg_cancel(msg, hdr);
1822 return -EMSGSIZE;
1823 }
1824
1825 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1826 struct netlink_callback *cb,
1827 struct nl80211_dump_wiphy_state *state)
1828 {
1829 struct nlattr **tb = nl80211_fam.attrbuf;
1830 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1831 tb, nl80211_fam.maxattr, nl80211_policy);
1832 /* ignore parse errors for backward compatibility */
1833 if (ret)
1834 return 0;
1835
1836 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1837 if (tb[NL80211_ATTR_WIPHY])
1838 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1839 if (tb[NL80211_ATTR_WDEV])
1840 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1841 if (tb[NL80211_ATTR_IFINDEX]) {
1842 struct net_device *netdev;
1843 struct cfg80211_registered_device *rdev;
1844 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1845
1846 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1847 if (!netdev)
1848 return -ENODEV;
1849 if (netdev->ieee80211_ptr) {
1850 rdev = wiphy_to_rdev(
1851 netdev->ieee80211_ptr->wiphy);
1852 state->filter_wiphy = rdev->wiphy_idx;
1853 }
1854 }
1855
1856 return 0;
1857 }
1858
1859 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1860 {
1861 int idx = 0, ret;
1862 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1863 struct cfg80211_registered_device *rdev;
1864
1865 rtnl_lock();
1866 if (!state) {
1867 state = kzalloc(sizeof(*state), GFP_KERNEL);
1868 if (!state) {
1869 rtnl_unlock();
1870 return -ENOMEM;
1871 }
1872 state->filter_wiphy = -1;
1873 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1874 if (ret) {
1875 kfree(state);
1876 rtnl_unlock();
1877 return ret;
1878 }
1879 cb->args[0] = (long)state;
1880 }
1881
1882 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1883 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1884 continue;
1885 if (++idx <= state->start)
1886 continue;
1887 if (state->filter_wiphy != -1 &&
1888 state->filter_wiphy != rdev->wiphy_idx)
1889 continue;
1890 /* attempt to fit multiple wiphy data chunks into the skb */
1891 do {
1892 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1893 skb,
1894 NETLINK_CB(cb->skb).portid,
1895 cb->nlh->nlmsg_seq,
1896 NLM_F_MULTI, state);
1897 if (ret < 0) {
1898 /*
1899 * If sending the wiphy data didn't fit (ENOBUFS
1900 * or EMSGSIZE returned), this SKB is still
1901 * empty (so it's not too big because another
1902 * wiphy dataset is already in the skb) and
1903 * we've not tried to adjust the dump allocation
1904 * yet ... then adjust the alloc size to be
1905 * bigger, and return 1 but with the empty skb.
1906 * This results in an empty message being RX'ed
1907 * in userspace, but that is ignored.
1908 *
1909 * We can then retry with the larger buffer.
1910 */
1911 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1912 !skb->len && !state->split &&
1913 cb->min_dump_alloc < 4096) {
1914 cb->min_dump_alloc = 4096;
1915 state->split_start = 0;
1916 rtnl_unlock();
1917 return 1;
1918 }
1919 idx--;
1920 break;
1921 }
1922 } while (state->split_start > 0);
1923 break;
1924 }
1925 rtnl_unlock();
1926
1927 state->start = idx;
1928
1929 return skb->len;
1930 }
1931
1932 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1933 {
1934 kfree((void *)cb->args[0]);
1935 return 0;
1936 }
1937
1938 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1939 {
1940 struct sk_buff *msg;
1941 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1942 struct nl80211_dump_wiphy_state state = {};
1943
1944 msg = nlmsg_new(4096, GFP_KERNEL);
1945 if (!msg)
1946 return -ENOMEM;
1947
1948 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1949 info->snd_portid, info->snd_seq, 0,
1950 &state) < 0) {
1951 nlmsg_free(msg);
1952 return -ENOBUFS;
1953 }
1954
1955 return genlmsg_reply(msg, info);
1956 }
1957
1958 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1959 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1960 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1961 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1962 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1963 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1964 };
1965
1966 static int parse_txq_params(struct nlattr *tb[],
1967 struct ieee80211_txq_params *txq_params)
1968 {
1969 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1970 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1971 !tb[NL80211_TXQ_ATTR_AIFS])
1972 return -EINVAL;
1973
1974 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1975 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1976 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1977 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1978 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1979
1980 if (txq_params->ac >= NL80211_NUM_ACS)
1981 return -EINVAL;
1982
1983 return 0;
1984 }
1985
1986 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1987 {
1988 /*
1989 * You can only set the channel explicitly for WDS interfaces,
1990 * all others have their channel managed via their respective
1991 * "establish a connection" command (connect, join, ...)
1992 *
1993 * For AP/GO and mesh mode, the channel can be set with the
1994 * channel userspace API, but is only stored and passed to the
1995 * low-level driver when the AP starts or the mesh is joined.
1996 * This is for backward compatibility, userspace can also give
1997 * the channel in the start-ap or join-mesh commands instead.
1998 *
1999 * Monitors are special as they are normally slaved to
2000 * whatever else is going on, so they have their own special
2001 * operation to set the monitor channel if possible.
2002 */
2003 return !wdev ||
2004 wdev->iftype == NL80211_IFTYPE_AP ||
2005 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2006 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2007 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2008 }
2009
2010 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2011 struct genl_info *info,
2012 struct cfg80211_chan_def *chandef)
2013 {
2014 u32 control_freq;
2015
2016 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
2017 return -EINVAL;
2018
2019 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
2020
2021 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2022 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2023 chandef->center_freq1 = control_freq;
2024 chandef->center_freq2 = 0;
2025
2026 /* Primary channel not allowed */
2027 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
2028 return -EINVAL;
2029
2030 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2031 enum nl80211_channel_type chantype;
2032
2033 chantype = nla_get_u32(
2034 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2035
2036 switch (chantype) {
2037 case NL80211_CHAN_NO_HT:
2038 case NL80211_CHAN_HT20:
2039 case NL80211_CHAN_HT40PLUS:
2040 case NL80211_CHAN_HT40MINUS:
2041 cfg80211_chandef_create(chandef, chandef->chan,
2042 chantype);
2043 break;
2044 default:
2045 return -EINVAL;
2046 }
2047 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2048 chandef->width =
2049 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2050 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
2051 chandef->center_freq1 =
2052 nla_get_u32(
2053 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
2054 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
2055 chandef->center_freq2 =
2056 nla_get_u32(
2057 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
2058 }
2059
2060 if (!cfg80211_chandef_valid(chandef))
2061 return -EINVAL;
2062
2063 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2064 IEEE80211_CHAN_DISABLED))
2065 return -EINVAL;
2066
2067 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2068 chandef->width == NL80211_CHAN_WIDTH_10) &&
2069 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
2070 return -EINVAL;
2071
2072 return 0;
2073 }
2074
2075 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2076 struct net_device *dev,
2077 struct genl_info *info)
2078 {
2079 struct cfg80211_chan_def chandef;
2080 int result;
2081 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2082 struct wireless_dev *wdev = NULL;
2083
2084 if (dev)
2085 wdev = dev->ieee80211_ptr;
2086 if (!nl80211_can_set_dev_channel(wdev))
2087 return -EOPNOTSUPP;
2088 if (wdev)
2089 iftype = wdev->iftype;
2090
2091 result = nl80211_parse_chandef(rdev, info, &chandef);
2092 if (result)
2093 return result;
2094
2095 switch (iftype) {
2096 case NL80211_IFTYPE_AP:
2097 case NL80211_IFTYPE_P2P_GO:
2098 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2099 iftype)) {
2100 result = -EINVAL;
2101 break;
2102 }
2103 if (wdev->beacon_interval) {
2104 if (!dev || !rdev->ops->set_ap_chanwidth ||
2105 !(rdev->wiphy.features &
2106 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2107 result = -EBUSY;
2108 break;
2109 }
2110
2111 /* Only allow dynamic channel width changes */
2112 if (chandef.chan != wdev->preset_chandef.chan) {
2113 result = -EBUSY;
2114 break;
2115 }
2116 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2117 if (result)
2118 break;
2119 }
2120 wdev->preset_chandef = chandef;
2121 result = 0;
2122 break;
2123 case NL80211_IFTYPE_MESH_POINT:
2124 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2125 break;
2126 case NL80211_IFTYPE_MONITOR:
2127 result = cfg80211_set_monitor_channel(rdev, &chandef);
2128 break;
2129 default:
2130 result = -EINVAL;
2131 }
2132
2133 return result;
2134 }
2135
2136 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2137 {
2138 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2139 struct net_device *netdev = info->user_ptr[1];
2140
2141 return __nl80211_set_channel(rdev, netdev, info);
2142 }
2143
2144 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2145 {
2146 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2147 struct net_device *dev = info->user_ptr[1];
2148 struct wireless_dev *wdev = dev->ieee80211_ptr;
2149 const u8 *bssid;
2150
2151 if (!info->attrs[NL80211_ATTR_MAC])
2152 return -EINVAL;
2153
2154 if (netif_running(dev))
2155 return -EBUSY;
2156
2157 if (!rdev->ops->set_wds_peer)
2158 return -EOPNOTSUPP;
2159
2160 if (wdev->iftype != NL80211_IFTYPE_WDS)
2161 return -EOPNOTSUPP;
2162
2163 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2164 return rdev_set_wds_peer(rdev, dev, bssid);
2165 }
2166
2167 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2168 {
2169 struct cfg80211_registered_device *rdev;
2170 struct net_device *netdev = NULL;
2171 struct wireless_dev *wdev;
2172 int result = 0, rem_txq_params = 0;
2173 struct nlattr *nl_txq_params;
2174 u32 changed;
2175 u8 retry_short = 0, retry_long = 0;
2176 u32 frag_threshold = 0, rts_threshold = 0;
2177 u8 coverage_class = 0;
2178
2179 ASSERT_RTNL();
2180
2181 /*
2182 * Try to find the wiphy and netdev. Normally this
2183 * function shouldn't need the netdev, but this is
2184 * done for backward compatibility -- previously
2185 * setting the channel was done per wiphy, but now
2186 * it is per netdev. Previous userland like hostapd
2187 * also passed a netdev to set_wiphy, so that it is
2188 * possible to let that go to the right netdev!
2189 */
2190
2191 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2192 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2193
2194 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2195 if (netdev && netdev->ieee80211_ptr)
2196 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2197 else
2198 netdev = NULL;
2199 }
2200
2201 if (!netdev) {
2202 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2203 info->attrs);
2204 if (IS_ERR(rdev))
2205 return PTR_ERR(rdev);
2206 wdev = NULL;
2207 netdev = NULL;
2208 result = 0;
2209 } else
2210 wdev = netdev->ieee80211_ptr;
2211
2212 /*
2213 * end workaround code, by now the rdev is available
2214 * and locked, and wdev may or may not be NULL.
2215 */
2216
2217 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2218 result = cfg80211_dev_rename(
2219 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2220
2221 if (result)
2222 return result;
2223
2224 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2225 struct ieee80211_txq_params txq_params;
2226 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2227
2228 if (!rdev->ops->set_txq_params)
2229 return -EOPNOTSUPP;
2230
2231 if (!netdev)
2232 return -EINVAL;
2233
2234 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2235 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2236 return -EINVAL;
2237
2238 if (!netif_running(netdev))
2239 return -ENETDOWN;
2240
2241 nla_for_each_nested(nl_txq_params,
2242 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2243 rem_txq_params) {
2244 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2245 nla_data(nl_txq_params),
2246 nla_len(nl_txq_params),
2247 txq_params_policy);
2248 if (result)
2249 return result;
2250 result = parse_txq_params(tb, &txq_params);
2251 if (result)
2252 return result;
2253
2254 result = rdev_set_txq_params(rdev, netdev,
2255 &txq_params);
2256 if (result)
2257 return result;
2258 }
2259 }
2260
2261 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2262 result = __nl80211_set_channel(
2263 rdev,
2264 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2265 info);
2266 if (result)
2267 return result;
2268 }
2269
2270 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2271 struct wireless_dev *txp_wdev = wdev;
2272 enum nl80211_tx_power_setting type;
2273 int idx, mbm = 0;
2274
2275 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2276 txp_wdev = NULL;
2277
2278 if (!rdev->ops->set_tx_power)
2279 return -EOPNOTSUPP;
2280
2281 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2282 type = nla_get_u32(info->attrs[idx]);
2283
2284 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2285 (type != NL80211_TX_POWER_AUTOMATIC))
2286 return -EINVAL;
2287
2288 if (type != NL80211_TX_POWER_AUTOMATIC) {
2289 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2290 mbm = nla_get_u32(info->attrs[idx]);
2291 }
2292
2293 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2294 if (result)
2295 return result;
2296 }
2297
2298 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2299 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2300 u32 tx_ant, rx_ant;
2301
2302 if ((!rdev->wiphy.available_antennas_tx &&
2303 !rdev->wiphy.available_antennas_rx) ||
2304 !rdev->ops->set_antenna)
2305 return -EOPNOTSUPP;
2306
2307 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2308 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2309
2310 /* reject antenna configurations which don't match the
2311 * available antenna masks, except for the "all" mask */
2312 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2313 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2314 return -EINVAL;
2315
2316 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2317 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2318
2319 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2320 if (result)
2321 return result;
2322 }
2323
2324 changed = 0;
2325
2326 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2327 retry_short = nla_get_u8(
2328 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2329 if (retry_short == 0)
2330 return -EINVAL;
2331
2332 changed |= WIPHY_PARAM_RETRY_SHORT;
2333 }
2334
2335 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2336 retry_long = nla_get_u8(
2337 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2338 if (retry_long == 0)
2339 return -EINVAL;
2340
2341 changed |= WIPHY_PARAM_RETRY_LONG;
2342 }
2343
2344 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2345 frag_threshold = nla_get_u32(
2346 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2347 if (frag_threshold < 256)
2348 return -EINVAL;
2349
2350 if (frag_threshold != (u32) -1) {
2351 /*
2352 * Fragments (apart from the last one) are required to
2353 * have even length. Make the fragmentation code
2354 * simpler by stripping LSB should someone try to use
2355 * odd threshold value.
2356 */
2357 frag_threshold &= ~0x1;
2358 }
2359 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2360 }
2361
2362 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2363 rts_threshold = nla_get_u32(
2364 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2365 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2366 }
2367
2368 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2369 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2370 return -EINVAL;
2371
2372 coverage_class = nla_get_u8(
2373 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2374 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2375 }
2376
2377 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2378 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2379 return -EOPNOTSUPP;
2380
2381 changed |= WIPHY_PARAM_DYN_ACK;
2382 }
2383
2384 if (changed) {
2385 u8 old_retry_short, old_retry_long;
2386 u32 old_frag_threshold, old_rts_threshold;
2387 u8 old_coverage_class;
2388
2389 if (!rdev->ops->set_wiphy_params)
2390 return -EOPNOTSUPP;
2391
2392 old_retry_short = rdev->wiphy.retry_short;
2393 old_retry_long = rdev->wiphy.retry_long;
2394 old_frag_threshold = rdev->wiphy.frag_threshold;
2395 old_rts_threshold = rdev->wiphy.rts_threshold;
2396 old_coverage_class = rdev->wiphy.coverage_class;
2397
2398 if (changed & WIPHY_PARAM_RETRY_SHORT)
2399 rdev->wiphy.retry_short = retry_short;
2400 if (changed & WIPHY_PARAM_RETRY_LONG)
2401 rdev->wiphy.retry_long = retry_long;
2402 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2403 rdev->wiphy.frag_threshold = frag_threshold;
2404 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2405 rdev->wiphy.rts_threshold = rts_threshold;
2406 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2407 rdev->wiphy.coverage_class = coverage_class;
2408
2409 result = rdev_set_wiphy_params(rdev, changed);
2410 if (result) {
2411 rdev->wiphy.retry_short = old_retry_short;
2412 rdev->wiphy.retry_long = old_retry_long;
2413 rdev->wiphy.frag_threshold = old_frag_threshold;
2414 rdev->wiphy.rts_threshold = old_rts_threshold;
2415 rdev->wiphy.coverage_class = old_coverage_class;
2416 return result;
2417 }
2418 }
2419 return 0;
2420 }
2421
2422 static inline u64 wdev_id(struct wireless_dev *wdev)
2423 {
2424 return (u64)wdev->identifier |
2425 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2426 }
2427
2428 static int nl80211_send_chandef(struct sk_buff *msg,
2429 const struct cfg80211_chan_def *chandef)
2430 {
2431 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2432 return -EINVAL;
2433
2434 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2435 chandef->chan->center_freq))
2436 return -ENOBUFS;
2437 switch (chandef->width) {
2438 case NL80211_CHAN_WIDTH_20_NOHT:
2439 case NL80211_CHAN_WIDTH_20:
2440 case NL80211_CHAN_WIDTH_40:
2441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2442 cfg80211_get_chandef_type(chandef)))
2443 return -ENOBUFS;
2444 break;
2445 default:
2446 break;
2447 }
2448 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2449 return -ENOBUFS;
2450 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2451 return -ENOBUFS;
2452 if (chandef->center_freq2 &&
2453 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2454 return -ENOBUFS;
2455 return 0;
2456 }
2457
2458 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2459 struct cfg80211_registered_device *rdev,
2460 struct wireless_dev *wdev, bool removal)
2461 {
2462 struct net_device *dev = wdev->netdev;
2463 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2464 void *hdr;
2465
2466 if (removal)
2467 cmd = NL80211_CMD_DEL_INTERFACE;
2468
2469 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2470 if (!hdr)
2471 return -1;
2472
2473 if (dev &&
2474 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2475 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2476 goto nla_put_failure;
2477
2478 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2479 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2480 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
2481 NL80211_ATTR_PAD) ||
2482 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2483 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2484 rdev->devlist_generation ^
2485 (cfg80211_rdev_list_generation << 2)))
2486 goto nla_put_failure;
2487
2488 if (rdev->ops->get_channel) {
2489 int ret;
2490 struct cfg80211_chan_def chandef;
2491
2492 ret = rdev_get_channel(rdev, wdev, &chandef);
2493 if (ret == 0) {
2494 if (nl80211_send_chandef(msg, &chandef))
2495 goto nla_put_failure;
2496 }
2497 }
2498
2499 if (rdev->ops->get_tx_power) {
2500 int dbm, ret;
2501
2502 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2503 if (ret == 0 &&
2504 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2505 DBM_TO_MBM(dbm)))
2506 goto nla_put_failure;
2507 }
2508
2509 if (wdev->ssid_len) {
2510 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2511 goto nla_put_failure;
2512 }
2513
2514 genlmsg_end(msg, hdr);
2515 return 0;
2516
2517 nla_put_failure:
2518 genlmsg_cancel(msg, hdr);
2519 return -EMSGSIZE;
2520 }
2521
2522 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2523 {
2524 int wp_idx = 0;
2525 int if_idx = 0;
2526 int wp_start = cb->args[0];
2527 int if_start = cb->args[1];
2528 struct cfg80211_registered_device *rdev;
2529 struct wireless_dev *wdev;
2530
2531 rtnl_lock();
2532 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2533 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2534 continue;
2535 if (wp_idx < wp_start) {
2536 wp_idx++;
2537 continue;
2538 }
2539 if_idx = 0;
2540
2541 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
2542 if (if_idx < if_start) {
2543 if_idx++;
2544 continue;
2545 }
2546 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2547 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2548 rdev, wdev, false) < 0) {
2549 goto out;
2550 }
2551 if_idx++;
2552 }
2553
2554 wp_idx++;
2555 }
2556 out:
2557 rtnl_unlock();
2558
2559 cb->args[0] = wp_idx;
2560 cb->args[1] = if_idx;
2561
2562 return skb->len;
2563 }
2564
2565 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2566 {
2567 struct sk_buff *msg;
2568 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2569 struct wireless_dev *wdev = info->user_ptr[1];
2570
2571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2572 if (!msg)
2573 return -ENOMEM;
2574
2575 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2576 rdev, wdev, false) < 0) {
2577 nlmsg_free(msg);
2578 return -ENOBUFS;
2579 }
2580
2581 return genlmsg_reply(msg, info);
2582 }
2583
2584 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2585 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2586 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2587 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2588 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2589 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2590 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2591 };
2592
2593 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2594 {
2595 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2596 int flag;
2597
2598 *mntrflags = 0;
2599
2600 if (!nla)
2601 return -EINVAL;
2602
2603 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2604 nla, mntr_flags_policy))
2605 return -EINVAL;
2606
2607 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2608 if (flags[flag])
2609 *mntrflags |= (1<<flag);
2610
2611 return 0;
2612 }
2613
2614 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2615 struct net_device *netdev, u8 use_4addr,
2616 enum nl80211_iftype iftype)
2617 {
2618 if (!use_4addr) {
2619 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2620 return -EBUSY;
2621 return 0;
2622 }
2623
2624 switch (iftype) {
2625 case NL80211_IFTYPE_AP_VLAN:
2626 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2627 return 0;
2628 break;
2629 case NL80211_IFTYPE_STATION:
2630 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2631 return 0;
2632 break;
2633 default:
2634 break;
2635 }
2636
2637 return -EOPNOTSUPP;
2638 }
2639
2640 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2641 {
2642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2643 struct vif_params params;
2644 int err;
2645 enum nl80211_iftype otype, ntype;
2646 struct net_device *dev = info->user_ptr[1];
2647 u32 _flags, *flags = NULL;
2648 bool change = false;
2649
2650 memset(&params, 0, sizeof(params));
2651
2652 otype = ntype = dev->ieee80211_ptr->iftype;
2653
2654 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2655 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2656 if (otype != ntype)
2657 change = true;
2658 if (ntype > NL80211_IFTYPE_MAX)
2659 return -EINVAL;
2660 }
2661
2662 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2663 struct wireless_dev *wdev = dev->ieee80211_ptr;
2664
2665 if (ntype != NL80211_IFTYPE_MESH_POINT)
2666 return -EINVAL;
2667 if (netif_running(dev))
2668 return -EBUSY;
2669
2670 wdev_lock(wdev);
2671 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2672 IEEE80211_MAX_MESH_ID_LEN);
2673 wdev->mesh_id_up_len =
2674 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2675 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2676 wdev->mesh_id_up_len);
2677 wdev_unlock(wdev);
2678 }
2679
2680 if (info->attrs[NL80211_ATTR_4ADDR]) {
2681 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2682 change = true;
2683 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2684 if (err)
2685 return err;
2686 } else {
2687 params.use_4addr = -1;
2688 }
2689
2690 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2691 if (ntype != NL80211_IFTYPE_MONITOR)
2692 return -EINVAL;
2693 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2694 &_flags);
2695 if (err)
2696 return err;
2697
2698 flags = &_flags;
2699 change = true;
2700 }
2701
2702 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
2703 const u8 *mumimo_groups;
2704 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2705
2706 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2707 return -EOPNOTSUPP;
2708
2709 mumimo_groups =
2710 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
2711
2712 /* bits 0 and 63 are reserved and must be zero */
2713 if ((mumimo_groups[0] & BIT(7)) ||
2714 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0)))
2715 return -EINVAL;
2716
2717 memcpy(params.vht_mumimo_groups, mumimo_groups,
2718 VHT_MUMIMO_GROUPS_DATA_LEN);
2719 change = true;
2720 }
2721
2722 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
2723 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
2724
2725 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
2726 return -EOPNOTSUPP;
2727
2728 nla_memcpy(params.macaddr,
2729 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR],
2730 ETH_ALEN);
2731 change = true;
2732 }
2733
2734 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2735 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2736 return -EOPNOTSUPP;
2737
2738 if (change)
2739 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2740 else
2741 err = 0;
2742
2743 if (!err && params.use_4addr != -1)
2744 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2745
2746 return err;
2747 }
2748
2749 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2750 {
2751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2752 struct vif_params params;
2753 struct wireless_dev *wdev;
2754 struct sk_buff *msg, *event;
2755 int err;
2756 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2757 u32 flags;
2758
2759 /* to avoid failing a new interface creation due to pending removal */
2760 cfg80211_destroy_ifaces(rdev);
2761
2762 memset(&params, 0, sizeof(params));
2763
2764 if (!info->attrs[NL80211_ATTR_IFNAME])
2765 return -EINVAL;
2766
2767 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2768 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2769 if (type > NL80211_IFTYPE_MAX)
2770 return -EINVAL;
2771 }
2772
2773 if (!rdev->ops->add_virtual_intf ||
2774 !(rdev->wiphy.interface_modes & (1 << type)))
2775 return -EOPNOTSUPP;
2776
2777 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2778 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2779 info->attrs[NL80211_ATTR_MAC]) {
2780 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2781 ETH_ALEN);
2782 if (!is_valid_ether_addr(params.macaddr))
2783 return -EADDRNOTAVAIL;
2784 }
2785
2786 if (info->attrs[NL80211_ATTR_4ADDR]) {
2787 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2788 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2789 if (err)
2790 return err;
2791 }
2792
2793 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2794 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2795 &flags);
2796
2797 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2798 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2799 return -EOPNOTSUPP;
2800
2801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2802 if (!msg)
2803 return -ENOMEM;
2804
2805 wdev = rdev_add_virtual_intf(rdev,
2806 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2807 NET_NAME_USER, type, err ? NULL : &flags,
2808 &params);
2809 if (WARN_ON(!wdev)) {
2810 nlmsg_free(msg);
2811 return -EPROTO;
2812 } else if (IS_ERR(wdev)) {
2813 nlmsg_free(msg);
2814 return PTR_ERR(wdev);
2815 }
2816
2817 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2818 wdev->owner_nlportid = info->snd_portid;
2819
2820 switch (type) {
2821 case NL80211_IFTYPE_MESH_POINT:
2822 if (!info->attrs[NL80211_ATTR_MESH_ID])
2823 break;
2824 wdev_lock(wdev);
2825 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2826 IEEE80211_MAX_MESH_ID_LEN);
2827 wdev->mesh_id_up_len =
2828 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2829 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2830 wdev->mesh_id_up_len);
2831 wdev_unlock(wdev);
2832 break;
2833 case NL80211_IFTYPE_P2P_DEVICE:
2834 /*
2835 * P2P Device doesn't have a netdev, so doesn't go
2836 * through the netdev notifier and must be added here
2837 */
2838 mutex_init(&wdev->mtx);
2839 INIT_LIST_HEAD(&wdev->event_list);
2840 spin_lock_init(&wdev->event_lock);
2841 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2842 spin_lock_init(&wdev->mgmt_registrations_lock);
2843
2844 wdev->identifier = ++rdev->wdev_id;
2845 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
2846 rdev->devlist_generation++;
2847 break;
2848 default:
2849 break;
2850 }
2851
2852 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2853 rdev, wdev, false) < 0) {
2854 nlmsg_free(msg);
2855 return -ENOBUFS;
2856 }
2857
2858 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2859 if (event) {
2860 if (nl80211_send_iface(event, 0, 0, 0,
2861 rdev, wdev, false) < 0) {
2862 nlmsg_free(event);
2863 goto out;
2864 }
2865
2866 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2867 event, 0, NL80211_MCGRP_CONFIG,
2868 GFP_KERNEL);
2869 }
2870
2871 out:
2872 return genlmsg_reply(msg, info);
2873 }
2874
2875 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2876 {
2877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2878 struct wireless_dev *wdev = info->user_ptr[1];
2879 struct sk_buff *msg;
2880 int status;
2881
2882 if (!rdev->ops->del_virtual_intf)
2883 return -EOPNOTSUPP;
2884
2885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2886 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2887 nlmsg_free(msg);
2888 msg = NULL;
2889 }
2890
2891 /*
2892 * If we remove a wireless device without a netdev then clear
2893 * user_ptr[1] so that nl80211_post_doit won't dereference it
2894 * to check if it needs to do dev_put(). Otherwise it crashes
2895 * since the wdev has been freed, unlike with a netdev where
2896 * we need the dev_put() for the netdev to really be freed.
2897 */
2898 if (!wdev->netdev)
2899 info->user_ptr[1] = NULL;
2900
2901 status = rdev_del_virtual_intf(rdev, wdev);
2902 if (status >= 0 && msg)
2903 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2904 msg, 0, NL80211_MCGRP_CONFIG,
2905 GFP_KERNEL);
2906 else
2907 nlmsg_free(msg);
2908
2909 return status;
2910 }
2911
2912 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2913 {
2914 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2915 struct net_device *dev = info->user_ptr[1];
2916 u16 noack_map;
2917
2918 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2919 return -EINVAL;
2920
2921 if (!rdev->ops->set_noack_map)
2922 return -EOPNOTSUPP;
2923
2924 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2925
2926 return rdev_set_noack_map(rdev, dev, noack_map);
2927 }
2928
2929 struct get_key_cookie {
2930 struct sk_buff *msg;
2931 int error;
2932 int idx;
2933 };
2934
2935 static void get_key_callback(void *c, struct key_params *params)
2936 {
2937 struct nlattr *key;
2938 struct get_key_cookie *cookie = c;
2939
2940 if ((params->key &&
2941 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2942 params->key_len, params->key)) ||
2943 (params->seq &&
2944 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2945 params->seq_len, params->seq)) ||
2946 (params->cipher &&
2947 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2948 params->cipher)))
2949 goto nla_put_failure;
2950
2951 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2952 if (!key)
2953 goto nla_put_failure;
2954
2955 if ((params->key &&
2956 nla_put(cookie->msg, NL80211_KEY_DATA,
2957 params->key_len, params->key)) ||
2958 (params->seq &&
2959 nla_put(cookie->msg, NL80211_KEY_SEQ,
2960 params->seq_len, params->seq)) ||
2961 (params->cipher &&
2962 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2963 params->cipher)))
2964 goto nla_put_failure;
2965
2966 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2967 goto nla_put_failure;
2968
2969 nla_nest_end(cookie->msg, key);
2970
2971 return;
2972 nla_put_failure:
2973 cookie->error = 1;
2974 }
2975
2976 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2977 {
2978 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2979 int err;
2980 struct net_device *dev = info->user_ptr[1];
2981 u8 key_idx = 0;
2982 const u8 *mac_addr = NULL;
2983 bool pairwise;
2984 struct get_key_cookie cookie = {
2985 .error = 0,
2986 };
2987 void *hdr;
2988 struct sk_buff *msg;
2989
2990 if (info->attrs[NL80211_ATTR_KEY_IDX])
2991 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2992
2993 if (key_idx > 5)
2994 return -EINVAL;
2995
2996 if (info->attrs[NL80211_ATTR_MAC])
2997 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2998
2999 pairwise = !!mac_addr;
3000 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3001 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3002
3003 if (kt >= NUM_NL80211_KEYTYPES)
3004 return -EINVAL;
3005 if (kt != NL80211_KEYTYPE_GROUP &&
3006 kt != NL80211_KEYTYPE_PAIRWISE)
3007 return -EINVAL;
3008 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3009 }
3010
3011 if (!rdev->ops->get_key)
3012 return -EOPNOTSUPP;
3013
3014 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3015 return -ENOENT;
3016
3017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3018 if (!msg)
3019 return -ENOMEM;
3020
3021 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3022 NL80211_CMD_NEW_KEY);
3023 if (!hdr)
3024 goto nla_put_failure;
3025
3026 cookie.msg = msg;
3027 cookie.idx = key_idx;
3028
3029 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3030 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3031 goto nla_put_failure;
3032 if (mac_addr &&
3033 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3034 goto nla_put_failure;
3035
3036 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3037 get_key_callback);
3038
3039 if (err)
3040 goto free_msg;
3041
3042 if (cookie.error)
3043 goto nla_put_failure;
3044
3045 genlmsg_end(msg, hdr);
3046 return genlmsg_reply(msg, info);
3047
3048 nla_put_failure:
3049 err = -ENOBUFS;
3050 free_msg:
3051 nlmsg_free(msg);
3052 return err;
3053 }
3054
3055 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3056 {
3057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3058 struct key_parse key;
3059 int err;
3060 struct net_device *dev = info->user_ptr[1];
3061
3062 err = nl80211_parse_key(info, &key);
3063 if (err)
3064 return err;
3065
3066 if (key.idx < 0)
3067 return -EINVAL;
3068
3069 /* only support setting default key */
3070 if (!key.def && !key.defmgmt)
3071 return -EINVAL;
3072
3073 wdev_lock(dev->ieee80211_ptr);
3074
3075 if (key.def) {
3076 if (!rdev->ops->set_default_key) {
3077 err = -EOPNOTSUPP;
3078 goto out;
3079 }
3080
3081 err = nl80211_key_allowed(dev->ieee80211_ptr);
3082 if (err)
3083 goto out;
3084
3085 err = rdev_set_default_key(rdev, dev, key.idx,
3086 key.def_uni, key.def_multi);
3087
3088 if (err)
3089 goto out;
3090
3091 #ifdef CONFIG_CFG80211_WEXT
3092 dev->ieee80211_ptr->wext.default_key = key.idx;
3093 #endif
3094 } else {
3095 if (key.def_uni || !key.def_multi) {
3096 err = -EINVAL;
3097 goto out;
3098 }
3099
3100 if (!rdev->ops->set_default_mgmt_key) {
3101 err = -EOPNOTSUPP;
3102 goto out;
3103 }
3104
3105 err = nl80211_key_allowed(dev->ieee80211_ptr);
3106 if (err)
3107 goto out;
3108
3109 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3110 if (err)
3111 goto out;
3112
3113 #ifdef CONFIG_CFG80211_WEXT
3114 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3115 #endif
3116 }
3117
3118 out:
3119 wdev_unlock(dev->ieee80211_ptr);
3120
3121 return err;
3122 }
3123
3124 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3125 {
3126 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3127 int err;
3128 struct net_device *dev = info->user_ptr[1];
3129 struct key_parse key;
3130 const u8 *mac_addr = NULL;
3131
3132 err = nl80211_parse_key(info, &key);
3133 if (err)
3134 return err;
3135
3136 if (!key.p.key)
3137 return -EINVAL;
3138
3139 if (info->attrs[NL80211_ATTR_MAC])
3140 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3141
3142 if (key.type == -1) {
3143 if (mac_addr)
3144 key.type = NL80211_KEYTYPE_PAIRWISE;
3145 else
3146 key.type = NL80211_KEYTYPE_GROUP;
3147 }
3148
3149 /* for now */
3150 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3151 key.type != NL80211_KEYTYPE_GROUP)
3152 return -EINVAL;
3153
3154 if (!rdev->ops->add_key)
3155 return -EOPNOTSUPP;
3156
3157 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3158 key.type == NL80211_KEYTYPE_PAIRWISE,
3159 mac_addr))
3160 return -EINVAL;
3161
3162 wdev_lock(dev->ieee80211_ptr);
3163 err = nl80211_key_allowed(dev->ieee80211_ptr);
3164 if (!err)
3165 err = rdev_add_key(rdev, dev, key.idx,
3166 key.type == NL80211_KEYTYPE_PAIRWISE,
3167 mac_addr, &key.p);
3168 wdev_unlock(dev->ieee80211_ptr);
3169
3170 return err;
3171 }
3172
3173 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3174 {
3175 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3176 int err;
3177 struct net_device *dev = info->user_ptr[1];
3178 u8 *mac_addr = NULL;
3179 struct key_parse key;
3180
3181 err = nl80211_parse_key(info, &key);
3182 if (err)
3183 return err;
3184
3185 if (info->attrs[NL80211_ATTR_MAC])
3186 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3187
3188 if (key.type == -1) {
3189 if (mac_addr)
3190 key.type = NL80211_KEYTYPE_PAIRWISE;
3191 else
3192 key.type = NL80211_KEYTYPE_GROUP;
3193 }
3194
3195 /* for now */
3196 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3197 key.type != NL80211_KEYTYPE_GROUP)
3198 return -EINVAL;
3199
3200 if (!rdev->ops->del_key)
3201 return -EOPNOTSUPP;
3202
3203 wdev_lock(dev->ieee80211_ptr);
3204 err = nl80211_key_allowed(dev->ieee80211_ptr);
3205
3206 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3207 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3208 err = -ENOENT;
3209
3210 if (!err)
3211 err = rdev_del_key(rdev, dev, key.idx,
3212 key.type == NL80211_KEYTYPE_PAIRWISE,
3213 mac_addr);
3214
3215 #ifdef CONFIG_CFG80211_WEXT
3216 if (!err) {
3217 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3218 dev->ieee80211_ptr->wext.default_key = -1;
3219 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3220 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3221 }
3222 #endif
3223 wdev_unlock(dev->ieee80211_ptr);
3224
3225 return err;
3226 }
3227
3228 /* This function returns an error or the number of nested attributes */
3229 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3230 {
3231 struct nlattr *attr;
3232 int n_entries = 0, tmp;
3233
3234 nla_for_each_nested(attr, nl_attr, tmp) {
3235 if (nla_len(attr) != ETH_ALEN)
3236 return -EINVAL;
3237
3238 n_entries++;
3239 }
3240
3241 return n_entries;
3242 }
3243
3244 /*
3245 * This function parses ACL information and allocates memory for ACL data.
3246 * On successful return, the calling function is responsible to free the
3247 * ACL buffer returned by this function.
3248 */
3249 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3250 struct genl_info *info)
3251 {
3252 enum nl80211_acl_policy acl_policy;
3253 struct nlattr *attr;
3254 struct cfg80211_acl_data *acl;
3255 int i = 0, n_entries, tmp;
3256
3257 if (!wiphy->max_acl_mac_addrs)
3258 return ERR_PTR(-EOPNOTSUPP);
3259
3260 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3261 return ERR_PTR(-EINVAL);
3262
3263 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3264 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3265 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3266 return ERR_PTR(-EINVAL);
3267
3268 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3269 return ERR_PTR(-EINVAL);
3270
3271 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3272 if (n_entries < 0)
3273 return ERR_PTR(n_entries);
3274
3275 if (n_entries > wiphy->max_acl_mac_addrs)
3276 return ERR_PTR(-ENOTSUPP);
3277
3278 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3279 GFP_KERNEL);
3280 if (!acl)
3281 return ERR_PTR(-ENOMEM);
3282
3283 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3284 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3285 i++;
3286 }
3287
3288 acl->n_acl_entries = n_entries;
3289 acl->acl_policy = acl_policy;
3290
3291 return acl;
3292 }
3293
3294 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3295 {
3296 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3297 struct net_device *dev = info->user_ptr[1];
3298 struct cfg80211_acl_data *acl;
3299 int err;
3300
3301 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3302 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3303 return -EOPNOTSUPP;
3304
3305 if (!dev->ieee80211_ptr->beacon_interval)
3306 return -EINVAL;
3307
3308 acl = parse_acl_data(&rdev->wiphy, info);
3309 if (IS_ERR(acl))
3310 return PTR_ERR(acl);
3311
3312 err = rdev_set_mac_acl(rdev, dev, acl);
3313
3314 kfree(acl);
3315
3316 return err;
3317 }
3318
3319 static int nl80211_parse_beacon(struct nlattr *attrs[],
3320 struct cfg80211_beacon_data *bcn)
3321 {
3322 bool haveinfo = false;
3323
3324 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3325 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3326 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3327 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3328 return -EINVAL;
3329
3330 memset(bcn, 0, sizeof(*bcn));
3331
3332 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3333 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3334 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3335 if (!bcn->head_len)
3336 return -EINVAL;
3337 haveinfo = true;
3338 }
3339
3340 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3341 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3342 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3343 haveinfo = true;
3344 }
3345
3346 if (!haveinfo)
3347 return -EINVAL;
3348
3349 if (attrs[NL80211_ATTR_IE]) {
3350 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3351 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3352 }
3353
3354 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3355 bcn->proberesp_ies =
3356 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3357 bcn->proberesp_ies_len =
3358 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3359 }
3360
3361 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3362 bcn->assocresp_ies =
3363 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3364 bcn->assocresp_ies_len =
3365 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3366 }
3367
3368 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3369 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3370 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3371 }
3372
3373 return 0;
3374 }
3375
3376 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3377 struct cfg80211_ap_settings *params)
3378 {
3379 struct wireless_dev *wdev;
3380 bool ret = false;
3381
3382 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3383 if (wdev->iftype != NL80211_IFTYPE_AP &&
3384 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3385 continue;
3386
3387 if (!wdev->preset_chandef.chan)
3388 continue;
3389
3390 params->chandef = wdev->preset_chandef;
3391 ret = true;
3392 break;
3393 }
3394
3395 return ret;
3396 }
3397
3398 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3399 enum nl80211_auth_type auth_type,
3400 enum nl80211_commands cmd)
3401 {
3402 if (auth_type > NL80211_AUTHTYPE_MAX)
3403 return false;
3404
3405 switch (cmd) {
3406 case NL80211_CMD_AUTHENTICATE:
3407 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3408 auth_type == NL80211_AUTHTYPE_SAE)
3409 return false;
3410 return true;
3411 case NL80211_CMD_CONNECT:
3412 case NL80211_CMD_START_AP:
3413 /* SAE not supported yet */
3414 if (auth_type == NL80211_AUTHTYPE_SAE)
3415 return false;
3416 return true;
3417 default:
3418 return false;
3419 }
3420 }
3421
3422 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3423 {
3424 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3425 struct net_device *dev = info->user_ptr[1];
3426 struct wireless_dev *wdev = dev->ieee80211_ptr;
3427 struct cfg80211_ap_settings params;
3428 int err;
3429
3430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3432 return -EOPNOTSUPP;
3433
3434 if (!rdev->ops->start_ap)
3435 return -EOPNOTSUPP;
3436
3437 if (wdev->beacon_interval)
3438 return -EALREADY;
3439
3440 memset(&params, 0, sizeof(params));
3441
3442 /* these are required for START_AP */
3443 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3444 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3445 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3446 return -EINVAL;
3447
3448 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3449 if (err)
3450 return err;
3451
3452 params.beacon_interval =
3453 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3454 params.dtim_period =
3455 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3456
3457 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3458 if (err)
3459 return err;
3460
3461 /*
3462 * In theory, some of these attributes should be required here
3463 * but since they were not used when the command was originally
3464 * added, keep them optional for old user space programs to let
3465 * them continue to work with drivers that do not need the
3466 * additional information -- drivers must check!
3467 */
3468 if (info->attrs[NL80211_ATTR_SSID]) {
3469 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3470 params.ssid_len =
3471 nla_len(info->attrs[NL80211_ATTR_SSID]);
3472 if (params.ssid_len == 0 ||
3473 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3474 return -EINVAL;
3475 }
3476
3477 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3478 params.hidden_ssid = nla_get_u32(
3479 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3480 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3481 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3482 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3483 return -EINVAL;
3484 }
3485
3486 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3487
3488 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3489 params.auth_type = nla_get_u32(
3490 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3491 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3492 NL80211_CMD_START_AP))
3493 return -EINVAL;
3494 } else
3495 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3496
3497 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3498 NL80211_MAX_NR_CIPHER_SUITES);
3499 if (err)
3500 return err;
3501
3502 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3503 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3504 return -EOPNOTSUPP;
3505 params.inactivity_timeout = nla_get_u16(
3506 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3507 }
3508
3509 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3510 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3511 return -EINVAL;
3512 params.p2p_ctwindow =
3513 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3514 if (params.p2p_ctwindow > 127)
3515 return -EINVAL;
3516 if (params.p2p_ctwindow != 0 &&
3517 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3518 return -EINVAL;
3519 }
3520
3521 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3522 u8 tmp;
3523
3524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3525 return -EINVAL;
3526 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3527 if (tmp > 1)
3528 return -EINVAL;
3529 params.p2p_opp_ps = tmp;
3530 if (params.p2p_opp_ps != 0 &&
3531 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3532 return -EINVAL;
3533 }
3534
3535 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3536 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3537 if (err)
3538 return err;
3539 } else if (wdev->preset_chandef.chan) {
3540 params.chandef = wdev->preset_chandef;
3541 } else if (!nl80211_get_ap_channel(rdev, &params))
3542 return -EINVAL;
3543
3544 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3545 wdev->iftype))
3546 return -EINVAL;
3547
3548 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3549 params.smps_mode =
3550 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3551 switch (params.smps_mode) {
3552 case NL80211_SMPS_OFF:
3553 break;
3554 case NL80211_SMPS_STATIC:
3555 if (!(rdev->wiphy.features &
3556 NL80211_FEATURE_STATIC_SMPS))
3557 return -EINVAL;
3558 break;
3559 case NL80211_SMPS_DYNAMIC:
3560 if (!(rdev->wiphy.features &
3561 NL80211_FEATURE_DYNAMIC_SMPS))
3562 return -EINVAL;
3563 break;
3564 default:
3565 return -EINVAL;
3566 }
3567 } else {
3568 params.smps_mode = NL80211_SMPS_OFF;
3569 }
3570
3571 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
3572 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
3573 return -EOPNOTSUPP;
3574
3575 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3576 params.acl = parse_acl_data(&rdev->wiphy, info);
3577 if (IS_ERR(params.acl))
3578 return PTR_ERR(params.acl);
3579 }
3580
3581 wdev_lock(wdev);
3582 err = rdev_start_ap(rdev, dev, &params);
3583 if (!err) {
3584 wdev->preset_chandef = params.chandef;
3585 wdev->beacon_interval = params.beacon_interval;
3586 wdev->chandef = params.chandef;
3587 wdev->ssid_len = params.ssid_len;
3588 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3589 }
3590 wdev_unlock(wdev);
3591
3592 kfree(params.acl);
3593
3594 return err;
3595 }
3596
3597 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3598 {
3599 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3600 struct net_device *dev = info->user_ptr[1];
3601 struct wireless_dev *wdev = dev->ieee80211_ptr;
3602 struct cfg80211_beacon_data params;
3603 int err;
3604
3605 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3606 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3607 return -EOPNOTSUPP;
3608
3609 if (!rdev->ops->change_beacon)
3610 return -EOPNOTSUPP;
3611
3612 if (!wdev->beacon_interval)
3613 return -EINVAL;
3614
3615 err = nl80211_parse_beacon(info->attrs, &params);
3616 if (err)
3617 return err;
3618
3619 wdev_lock(wdev);
3620 err = rdev_change_beacon(rdev, dev, &params);
3621 wdev_unlock(wdev);
3622
3623 return err;
3624 }
3625
3626 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3627 {
3628 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3629 struct net_device *dev = info->user_ptr[1];
3630
3631 return cfg80211_stop_ap(rdev, dev, false);
3632 }
3633
3634 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3635 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3636 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3637 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3638 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3639 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3640 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3641 };
3642
3643 static int parse_station_flags(struct genl_info *info,
3644 enum nl80211_iftype iftype,
3645 struct station_parameters *params)
3646 {
3647 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3648 struct nlattr *nla;
3649 int flag;
3650
3651 /*
3652 * Try parsing the new attribute first so userspace
3653 * can specify both for older kernels.
3654 */
3655 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3656 if (nla) {
3657 struct nl80211_sta_flag_update *sta_flags;
3658
3659 sta_flags = nla_data(nla);
3660 params->sta_flags_mask = sta_flags->mask;
3661 params->sta_flags_set = sta_flags->set;
3662 params->sta_flags_set &= params->sta_flags_mask;
3663 if ((params->sta_flags_mask |
3664 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3665 return -EINVAL;
3666 return 0;
3667 }
3668
3669 /* if present, parse the old attribute */
3670
3671 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3672 if (!nla)
3673 return 0;
3674
3675 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3676 nla, sta_flags_policy))
3677 return -EINVAL;
3678
3679 /*
3680 * Only allow certain flags for interface types so that
3681 * other attributes are silently ignored. Remember that
3682 * this is backward compatibility code with old userspace
3683 * and shouldn't be hit in other cases anyway.
3684 */
3685 switch (iftype) {
3686 case NL80211_IFTYPE_AP:
3687 case NL80211_IFTYPE_AP_VLAN:
3688 case NL80211_IFTYPE_P2P_GO:
3689 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3690 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3691 BIT(NL80211_STA_FLAG_WME) |
3692 BIT(NL80211_STA_FLAG_MFP);
3693 break;
3694 case NL80211_IFTYPE_P2P_CLIENT:
3695 case NL80211_IFTYPE_STATION:
3696 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3697 BIT(NL80211_STA_FLAG_TDLS_PEER);
3698 break;
3699 case NL80211_IFTYPE_MESH_POINT:
3700 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3701 BIT(NL80211_STA_FLAG_MFP) |
3702 BIT(NL80211_STA_FLAG_AUTHORIZED);
3703 default:
3704 return -EINVAL;
3705 }
3706
3707 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3708 if (flags[flag]) {
3709 params->sta_flags_set |= (1<<flag);
3710
3711 /* no longer support new API additions in old API */
3712 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3713 return -EINVAL;
3714 }
3715 }
3716
3717 return 0;
3718 }
3719
3720 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3721 int attr)
3722 {
3723 struct nlattr *rate;
3724 u32 bitrate;
3725 u16 bitrate_compat;
3726 enum nl80211_attrs rate_flg;
3727
3728 rate = nla_nest_start(msg, attr);
3729 if (!rate)
3730 return false;
3731
3732 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3733 bitrate = cfg80211_calculate_bitrate(info);
3734 /* report 16-bit bitrate only if we can */
3735 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3736 if (bitrate > 0 &&
3737 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3738 return false;
3739 if (bitrate_compat > 0 &&
3740 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3741 return false;
3742
3743 switch (info->bw) {
3744 case RATE_INFO_BW_5:
3745 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3746 break;
3747 case RATE_INFO_BW_10:
3748 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3749 break;
3750 default:
3751 WARN_ON(1);
3752 /* fall through */
3753 case RATE_INFO_BW_20:
3754 rate_flg = 0;
3755 break;
3756 case RATE_INFO_BW_40:
3757 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3758 break;
3759 case RATE_INFO_BW_80:
3760 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3761 break;
3762 case RATE_INFO_BW_160:
3763 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3764 break;
3765 }
3766
3767 if (rate_flg && nla_put_flag(msg, rate_flg))
3768 return false;
3769
3770 if (info->flags & RATE_INFO_FLAGS_MCS) {
3771 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3772 return false;
3773 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3774 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3775 return false;
3776 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3777 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3778 return false;
3779 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3780 return false;
3781 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3782 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3783 return false;
3784 }
3785
3786 nla_nest_end(msg, rate);
3787 return true;
3788 }
3789
3790 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3791 int id)
3792 {
3793 void *attr;
3794 int i = 0;
3795
3796 if (!mask)
3797 return true;
3798
3799 attr = nla_nest_start(msg, id);
3800 if (!attr)
3801 return false;
3802
3803 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3804 if (!(mask & BIT(i)))
3805 continue;
3806
3807 if (nla_put_u8(msg, i, signal[i]))
3808 return false;
3809 }
3810
3811 nla_nest_end(msg, attr);
3812
3813 return true;
3814 }
3815
3816 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3817 u32 seq, int flags,
3818 struct cfg80211_registered_device *rdev,
3819 struct net_device *dev,
3820 const u8 *mac_addr, struct station_info *sinfo)
3821 {
3822 void *hdr;
3823 struct nlattr *sinfoattr, *bss_param;
3824
3825 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3826 if (!hdr)
3827 return -1;
3828
3829 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3830 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3831 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3832 goto nla_put_failure;
3833
3834 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3835 if (!sinfoattr)
3836 goto nla_put_failure;
3837
3838 #define PUT_SINFO(attr, memb, type) do { \
3839 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \
3840 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
3841 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3842 sinfo->memb)) \
3843 goto nla_put_failure; \
3844 } while (0)
3845 #define PUT_SINFO_U64(attr, memb) do { \
3846 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \
3847 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \
3848 sinfo->memb, NL80211_STA_INFO_PAD)) \
3849 goto nla_put_failure; \
3850 } while (0)
3851
3852 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3853 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3854
3855 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3856 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3857 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3858 (u32)sinfo->rx_bytes))
3859 goto nla_put_failure;
3860
3861 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3862 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3863 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3864 (u32)sinfo->tx_bytes))
3865 goto nla_put_failure;
3866
3867 PUT_SINFO_U64(RX_BYTES64, rx_bytes);
3868 PUT_SINFO_U64(TX_BYTES64, tx_bytes);
3869 PUT_SINFO(LLID, llid, u16);
3870 PUT_SINFO(PLID, plid, u16);
3871 PUT_SINFO(PLINK_STATE, plink_state, u8);
3872 PUT_SINFO_U64(RX_DURATION, rx_duration);
3873
3874 switch (rdev->wiphy.signal_type) {
3875 case CFG80211_SIGNAL_TYPE_MBM:
3876 PUT_SINFO(SIGNAL, signal, u8);
3877 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3878 break;
3879 default:
3880 break;
3881 }
3882 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3883 if (!nl80211_put_signal(msg, sinfo->chains,
3884 sinfo->chain_signal,
3885 NL80211_STA_INFO_CHAIN_SIGNAL))
3886 goto nla_put_failure;
3887 }
3888 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3889 if (!nl80211_put_signal(msg, sinfo->chains,
3890 sinfo->chain_signal_avg,
3891 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3892 goto nla_put_failure;
3893 }
3894 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3895 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3896 NL80211_STA_INFO_TX_BITRATE))
3897 goto nla_put_failure;
3898 }
3899 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3900 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3901 NL80211_STA_INFO_RX_BITRATE))
3902 goto nla_put_failure;
3903 }
3904
3905 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3906 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3907 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3908 PUT_SINFO(TX_FAILED, tx_failed, u32);
3909 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3910 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3911 PUT_SINFO(LOCAL_PM, local_pm, u32);
3912 PUT_SINFO(PEER_PM, peer_pm, u32);
3913 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3914
3915 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3916 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3917 if (!bss_param)
3918 goto nla_put_failure;
3919
3920 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3921 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3922 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3923 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3924 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3925 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3926 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3927 sinfo->bss_param.dtim_period) ||
3928 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3929 sinfo->bss_param.beacon_interval))
3930 goto nla_put_failure;
3931
3932 nla_nest_end(msg, bss_param);
3933 }
3934 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3935 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3936 sizeof(struct nl80211_sta_flag_update),
3937 &sinfo->sta_flags))
3938 goto nla_put_failure;
3939
3940 PUT_SINFO_U64(T_OFFSET, t_offset);
3941 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
3942 PUT_SINFO_U64(BEACON_RX, rx_beacon);
3943 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3944
3945 #undef PUT_SINFO
3946 #undef PUT_SINFO_U64
3947
3948 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3949 struct nlattr *tidsattr;
3950 int tid;
3951
3952 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3953 if (!tidsattr)
3954 goto nla_put_failure;
3955
3956 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3957 struct cfg80211_tid_stats *tidstats;
3958 struct nlattr *tidattr;
3959
3960 tidstats = &sinfo->pertid[tid];
3961
3962 if (!tidstats->filled)
3963 continue;
3964
3965 tidattr = nla_nest_start(msg, tid + 1);
3966 if (!tidattr)
3967 goto nla_put_failure;
3968
3969 #define PUT_TIDVAL_U64(attr, memb) do { \
3970 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3971 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \
3972 tidstats->memb, NL80211_TID_STATS_PAD)) \
3973 goto nla_put_failure; \
3974 } while (0)
3975
3976 PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
3977 PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
3978 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
3979 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
3980
3981 #undef PUT_TIDVAL_U64
3982 nla_nest_end(msg, tidattr);
3983 }
3984
3985 nla_nest_end(msg, tidsattr);
3986 }
3987
3988 nla_nest_end(msg, sinfoattr);
3989
3990 if (sinfo->assoc_req_ies_len &&
3991 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3992 sinfo->assoc_req_ies))
3993 goto nla_put_failure;
3994
3995 genlmsg_end(msg, hdr);
3996 return 0;
3997
3998 nla_put_failure:
3999 genlmsg_cancel(msg, hdr);
4000 return -EMSGSIZE;
4001 }
4002
4003 static int nl80211_dump_station(struct sk_buff *skb,
4004 struct netlink_callback *cb)
4005 {
4006 struct station_info sinfo;
4007 struct cfg80211_registered_device *rdev;
4008 struct wireless_dev *wdev;
4009 u8 mac_addr[ETH_ALEN];
4010 int sta_idx = cb->args[2];
4011 int err;
4012
4013 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4014 if (err)
4015 return err;
4016
4017 if (!wdev->netdev) {
4018 err = -EINVAL;
4019 goto out_err;
4020 }
4021
4022 if (!rdev->ops->dump_station) {
4023 err = -EOPNOTSUPP;
4024 goto out_err;
4025 }
4026
4027 while (1) {
4028 memset(&sinfo, 0, sizeof(sinfo));
4029 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
4030 mac_addr, &sinfo);
4031 if (err == -ENOENT)
4032 break;
4033 if (err)
4034 goto out_err;
4035
4036 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
4037 NETLINK_CB(cb->skb).portid,
4038 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4039 rdev, wdev->netdev, mac_addr,
4040 &sinfo) < 0)
4041 goto out;
4042
4043 sta_idx++;
4044 }
4045
4046 out:
4047 cb->args[2] = sta_idx;
4048 err = skb->len;
4049 out_err:
4050 nl80211_finish_wdev_dump(rdev);
4051
4052 return err;
4053 }
4054
4055 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
4056 {
4057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4058 struct net_device *dev = info->user_ptr[1];
4059 struct station_info sinfo;
4060 struct sk_buff *msg;
4061 u8 *mac_addr = NULL;
4062 int err;
4063
4064 memset(&sinfo, 0, sizeof(sinfo));
4065
4066 if (!info->attrs[NL80211_ATTR_MAC])
4067 return -EINVAL;
4068
4069 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4070
4071 if (!rdev->ops->get_station)
4072 return -EOPNOTSUPP;
4073
4074 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
4075 if (err)
4076 return err;
4077
4078 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4079 if (!msg)
4080 return -ENOMEM;
4081
4082 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
4083 info->snd_portid, info->snd_seq, 0,
4084 rdev, dev, mac_addr, &sinfo) < 0) {
4085 nlmsg_free(msg);
4086 return -ENOBUFS;
4087 }
4088
4089 return genlmsg_reply(msg, info);
4090 }
4091
4092 int cfg80211_check_station_change(struct wiphy *wiphy,
4093 struct station_parameters *params,
4094 enum cfg80211_station_type statype)
4095 {
4096 if (params->listen_interval != -1 &&
4097 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4098 return -EINVAL;
4099
4100 if (params->support_p2p_ps != -1 &&
4101 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4102 return -EINVAL;
4103
4104 if (params->aid &&
4105 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
4106 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
4107 return -EINVAL;
4108
4109 /* When you run into this, adjust the code below for the new flag */
4110 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4111
4112 switch (statype) {
4113 case CFG80211_STA_MESH_PEER_KERNEL:
4114 case CFG80211_STA_MESH_PEER_USER:
4115 /*
4116 * No ignoring the TDLS flag here -- the userspace mesh
4117 * code doesn't have the bug of including TDLS in the
4118 * mask everywhere.
4119 */
4120 if (params->sta_flags_mask &
4121 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4122 BIT(NL80211_STA_FLAG_MFP) |
4123 BIT(NL80211_STA_FLAG_AUTHORIZED)))
4124 return -EINVAL;
4125 break;
4126 case CFG80211_STA_TDLS_PEER_SETUP:
4127 case CFG80211_STA_TDLS_PEER_ACTIVE:
4128 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4129 return -EINVAL;
4130 /* ignore since it can't change */
4131 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4132 break;
4133 default:
4134 /* disallow mesh-specific things */
4135 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4136 return -EINVAL;
4137 if (params->local_pm)
4138 return -EINVAL;
4139 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4140 return -EINVAL;
4141 }
4142
4143 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4144 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4145 /* TDLS can't be set, ... */
4146 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4147 return -EINVAL;
4148 /*
4149 * ... but don't bother the driver with it. This works around
4150 * a hostapd/wpa_supplicant issue -- it always includes the
4151 * TLDS_PEER flag in the mask even for AP mode.
4152 */
4153 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4154 }
4155
4156 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4157 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4158 /* reject other things that can't change */
4159 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4160 return -EINVAL;
4161 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4162 return -EINVAL;
4163 if (params->supported_rates)
4164 return -EINVAL;
4165 if (params->ext_capab || params->ht_capa || params->vht_capa)
4166 return -EINVAL;
4167 }
4168
4169 if (statype != CFG80211_STA_AP_CLIENT &&
4170 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4171 if (params->vlan)
4172 return -EINVAL;
4173 }
4174
4175 switch (statype) {
4176 case CFG80211_STA_AP_MLME_CLIENT:
4177 /* Use this only for authorizing/unauthorizing a station */
4178 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4179 return -EOPNOTSUPP;
4180 break;
4181 case CFG80211_STA_AP_CLIENT:
4182 case CFG80211_STA_AP_CLIENT_UNASSOC:
4183 /* accept only the listed bits */
4184 if (params->sta_flags_mask &
4185 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4186 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4187 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4188 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4189 BIT(NL80211_STA_FLAG_WME) |
4190 BIT(NL80211_STA_FLAG_MFP)))
4191 return -EINVAL;
4192
4193 /* but authenticated/associated only if driver handles it */
4194 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4195 params->sta_flags_mask &
4196 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4197 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4198 return -EINVAL;
4199 break;
4200 case CFG80211_STA_IBSS:
4201 case CFG80211_STA_AP_STA:
4202 /* reject any changes other than AUTHORIZED */
4203 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4204 return -EINVAL;
4205 break;
4206 case CFG80211_STA_TDLS_PEER_SETUP:
4207 /* reject any changes other than AUTHORIZED or WME */
4208 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4209 BIT(NL80211_STA_FLAG_WME)))
4210 return -EINVAL;
4211 /* force (at least) rates when authorizing */
4212 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4213 !params->supported_rates)
4214 return -EINVAL;
4215 break;
4216 case CFG80211_STA_TDLS_PEER_ACTIVE:
4217 /* reject any changes */
4218 return -EINVAL;
4219 case CFG80211_STA_MESH_PEER_KERNEL:
4220 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4221 return -EINVAL;
4222 break;
4223 case CFG80211_STA_MESH_PEER_USER:
4224 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4225 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4226 return -EINVAL;
4227 break;
4228 }
4229
4230 return 0;
4231 }
4232 EXPORT_SYMBOL(cfg80211_check_station_change);
4233
4234 /*
4235 * Get vlan interface making sure it is running and on the right wiphy.
4236 */
4237 static struct net_device *get_vlan(struct genl_info *info,
4238 struct cfg80211_registered_device *rdev)
4239 {
4240 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4241 struct net_device *v;
4242 int ret;
4243
4244 if (!vlanattr)
4245 return NULL;
4246
4247 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4248 if (!v)
4249 return ERR_PTR(-ENODEV);
4250
4251 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4252 ret = -EINVAL;
4253 goto error;
4254 }
4255
4256 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4257 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4258 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4259 ret = -EINVAL;
4260 goto error;
4261 }
4262
4263 if (!netif_running(v)) {
4264 ret = -ENETDOWN;
4265 goto error;
4266 }
4267
4268 return v;
4269 error:
4270 dev_put(v);
4271 return ERR_PTR(ret);
4272 }
4273
4274 static const struct nla_policy
4275 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4276 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4277 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4278 };
4279
4280 static int nl80211_parse_sta_wme(struct genl_info *info,
4281 struct station_parameters *params)
4282 {
4283 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4284 struct nlattr *nla;
4285 int err;
4286
4287 /* parse WME attributes if present */
4288 if (!info->attrs[NL80211_ATTR_STA_WME])
4289 return 0;
4290
4291 nla = info->attrs[NL80211_ATTR_STA_WME];
4292 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4293 nl80211_sta_wme_policy);
4294 if (err)
4295 return err;
4296
4297 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4298 params->uapsd_queues = nla_get_u8(
4299 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4300 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4301 return -EINVAL;
4302
4303 if (tb[NL80211_STA_WME_MAX_SP])
4304 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4305
4306 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4307 return -EINVAL;
4308
4309 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4310
4311 return 0;
4312 }
4313
4314 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4315 struct station_parameters *params)
4316 {
4317 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4318 params->supported_channels =
4319 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4320 params->supported_channels_len =
4321 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4322 /*
4323 * Need to include at least one (first channel, number of
4324 * channels) tuple for each subband, and must have proper
4325 * tuples for the rest of the data as well.
4326 */
4327 if (params->supported_channels_len < 2)
4328 return -EINVAL;
4329 if (params->supported_channels_len % 2)
4330 return -EINVAL;
4331 }
4332
4333 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4334 params->supported_oper_classes =
4335 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4336 params->supported_oper_classes_len =
4337 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4338 /*
4339 * The value of the Length field of the Supported Operating
4340 * Classes element is between 2 and 253.
4341 */
4342 if (params->supported_oper_classes_len < 2 ||
4343 params->supported_oper_classes_len > 253)
4344 return -EINVAL;
4345 }
4346 return 0;
4347 }
4348
4349 static int nl80211_set_station_tdls(struct genl_info *info,
4350 struct station_parameters *params)
4351 {
4352 int err;
4353 /* Dummy STA entry gets updated once the peer capabilities are known */
4354 if (info->attrs[NL80211_ATTR_PEER_AID])
4355 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4356 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4357 params->ht_capa =
4358 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4359 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4360 params->vht_capa =
4361 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4362
4363 err = nl80211_parse_sta_channel_info(info, params);
4364 if (err)
4365 return err;
4366
4367 return nl80211_parse_sta_wme(info, params);
4368 }
4369
4370 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4371 {
4372 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4373 struct net_device *dev = info->user_ptr[1];
4374 struct station_parameters params;
4375 u8 *mac_addr;
4376 int err;
4377
4378 memset(&params, 0, sizeof(params));
4379
4380 if (!rdev->ops->change_station)
4381 return -EOPNOTSUPP;
4382
4383 /*
4384 * AID and listen_interval properties can be set only for unassociated
4385 * station. Include these parameters here and will check them in
4386 * cfg80211_check_station_change().
4387 */
4388 if (info->attrs[NL80211_ATTR_STA_AID])
4389 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4390
4391 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4392 params.listen_interval =
4393 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4394 else
4395 params.listen_interval = -1;
4396
4397 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4398 u8 tmp;
4399
4400 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4401 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4402 return -EINVAL;
4403
4404 params.support_p2p_ps = tmp;
4405 } else {
4406 params.support_p2p_ps = -1;
4407 }
4408
4409 if (!info->attrs[NL80211_ATTR_MAC])
4410 return -EINVAL;
4411
4412 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4413
4414 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4415 params.supported_rates =
4416 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4417 params.supported_rates_len =
4418 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4419 }
4420
4421 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4422 params.capability =
4423 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4424 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4425 }
4426
4427 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4428 params.ext_capab =
4429 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4430 params.ext_capab_len =
4431 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4432 }
4433
4434 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4435 return -EINVAL;
4436
4437 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4438 params.plink_action =
4439 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4440 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4441 return -EINVAL;
4442 }
4443
4444 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4445 params.plink_state =
4446 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4447 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4448 return -EINVAL;
4449 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) {
4450 params.peer_aid = nla_get_u16(
4451 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
4452 if (params.peer_aid > IEEE80211_MAX_AID)
4453 return -EINVAL;
4454 }
4455 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4456 }
4457
4458 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4459 enum nl80211_mesh_power_mode pm = nla_get_u32(
4460 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4461
4462 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4463 pm > NL80211_MESH_POWER_MAX)
4464 return -EINVAL;
4465
4466 params.local_pm = pm;
4467 }
4468
4469 /* Include parameters for TDLS peer (will check later) */
4470 err = nl80211_set_station_tdls(info, &params);
4471 if (err)
4472 return err;
4473
4474 params.vlan = get_vlan(info, rdev);
4475 if (IS_ERR(params.vlan))
4476 return PTR_ERR(params.vlan);
4477
4478 switch (dev->ieee80211_ptr->iftype) {
4479 case NL80211_IFTYPE_AP:
4480 case NL80211_IFTYPE_AP_VLAN:
4481 case NL80211_IFTYPE_P2P_GO:
4482 case NL80211_IFTYPE_P2P_CLIENT:
4483 case NL80211_IFTYPE_STATION:
4484 case NL80211_IFTYPE_ADHOC:
4485 case NL80211_IFTYPE_MESH_POINT:
4486 break;
4487 default:
4488 err = -EOPNOTSUPP;
4489 goto out_put_vlan;
4490 }
4491
4492 /* driver will call cfg80211_check_station_change() */
4493 err = rdev_change_station(rdev, dev, mac_addr, &params);
4494
4495 out_put_vlan:
4496 if (params.vlan)
4497 dev_put(params.vlan);
4498
4499 return err;
4500 }
4501
4502 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4503 {
4504 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4505 int err;
4506 struct net_device *dev = info->user_ptr[1];
4507 struct station_parameters params;
4508 u8 *mac_addr = NULL;
4509 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4510 BIT(NL80211_STA_FLAG_ASSOCIATED);
4511
4512 memset(&params, 0, sizeof(params));
4513
4514 if (!rdev->ops->add_station)
4515 return -EOPNOTSUPP;
4516
4517 if (!info->attrs[NL80211_ATTR_MAC])
4518 return -EINVAL;
4519
4520 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4521 return -EINVAL;
4522
4523 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4524 return -EINVAL;
4525
4526 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4527 !info->attrs[NL80211_ATTR_PEER_AID])
4528 return -EINVAL;
4529
4530 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4531 params.supported_rates =
4532 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4533 params.supported_rates_len =
4534 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4535 params.listen_interval =
4536 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4537
4538 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
4539 u8 tmp;
4540
4541 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
4542 if (tmp >= NUM_NL80211_P2P_PS_STATUS)
4543 return -EINVAL;
4544
4545 params.support_p2p_ps = tmp;
4546 } else {
4547 /*
4548 * if not specified, assume it's supported for P2P GO interface,
4549 * and is NOT supported for AP interface
4550 */
4551 params.support_p2p_ps =
4552 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
4553 }
4554
4555 if (info->attrs[NL80211_ATTR_PEER_AID])
4556 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4557 else
4558 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4559 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4560 return -EINVAL;
4561
4562 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4563 params.capability =
4564 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4565 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4566 }
4567
4568 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4569 params.ext_capab =
4570 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4571 params.ext_capab_len =
4572 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4573 }
4574
4575 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4576 params.ht_capa =
4577 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4578
4579 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4580 params.vht_capa =
4581 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4582
4583 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4584 params.opmode_notif_used = true;
4585 params.opmode_notif =
4586 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4587 }
4588
4589 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4590 params.plink_action =
4591 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4592 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4593 return -EINVAL;
4594 }
4595
4596 err = nl80211_parse_sta_channel_info(info, &params);
4597 if (err)
4598 return err;
4599
4600 err = nl80211_parse_sta_wme(info, &params);
4601 if (err)
4602 return err;
4603
4604 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4605 return -EINVAL;
4606
4607 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4608 * as userspace might just pass through the capabilities from the IEs
4609 * directly, rather than enforcing this restriction and returning an
4610 * error in this case.
4611 */
4612 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4613 params.ht_capa = NULL;
4614 params.vht_capa = NULL;
4615 }
4616
4617 /* When you run into this, adjust the code below for the new flag */
4618 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4619
4620 switch (dev->ieee80211_ptr->iftype) {
4621 case NL80211_IFTYPE_AP:
4622 case NL80211_IFTYPE_AP_VLAN:
4623 case NL80211_IFTYPE_P2P_GO:
4624 /* ignore WME attributes if iface/sta is not capable */
4625 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4626 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4627 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4628
4629 /* TDLS peers cannot be added */
4630 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4631 info->attrs[NL80211_ATTR_PEER_AID])
4632 return -EINVAL;
4633 /* but don't bother the driver with it */
4634 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4635
4636 /* allow authenticated/associated only if driver handles it */
4637 if (!(rdev->wiphy.features &
4638 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4639 params.sta_flags_mask & auth_assoc)
4640 return -EINVAL;
4641
4642 /* Older userspace, or userspace wanting to be compatible with
4643 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4644 * and assoc flags in the mask, but assumes the station will be
4645 * added as associated anyway since this was the required driver
4646 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4647 * introduced.
4648 * In order to not bother drivers with this quirk in the API
4649 * set the flags in both the mask and set for new stations in
4650 * this case.
4651 */
4652 if (!(params.sta_flags_mask & auth_assoc)) {
4653 params.sta_flags_mask |= auth_assoc;
4654 params.sta_flags_set |= auth_assoc;
4655 }
4656
4657 /* must be last in here for error handling */
4658 params.vlan = get_vlan(info, rdev);
4659 if (IS_ERR(params.vlan))
4660 return PTR_ERR(params.vlan);
4661 break;
4662 case NL80211_IFTYPE_MESH_POINT:
4663 /* ignore uAPSD data */
4664 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4665
4666 /* associated is disallowed */
4667 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4668 return -EINVAL;
4669 /* TDLS peers cannot be added */
4670 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4671 info->attrs[NL80211_ATTR_PEER_AID])
4672 return -EINVAL;
4673 break;
4674 case NL80211_IFTYPE_STATION:
4675 case NL80211_IFTYPE_P2P_CLIENT:
4676 /* ignore uAPSD data */
4677 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4678
4679 /* these are disallowed */
4680 if (params.sta_flags_mask &
4681 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4682 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4683 return -EINVAL;
4684 /* Only TDLS peers can be added */
4685 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4686 return -EINVAL;
4687 /* Can only add if TDLS ... */
4688 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4689 return -EOPNOTSUPP;
4690 /* ... with external setup is supported */
4691 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4692 return -EOPNOTSUPP;
4693 /*
4694 * Older wpa_supplicant versions always mark the TDLS peer
4695 * as authorized, but it shouldn't yet be.
4696 */
4697 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4698 break;
4699 default:
4700 return -EOPNOTSUPP;
4701 }
4702
4703 /* be aware of params.vlan when changing code here */
4704
4705 err = rdev_add_station(rdev, dev, mac_addr, &params);
4706
4707 if (params.vlan)
4708 dev_put(params.vlan);
4709 return err;
4710 }
4711
4712 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4713 {
4714 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4715 struct net_device *dev = info->user_ptr[1];
4716 struct station_del_parameters params;
4717
4718 memset(&params, 0, sizeof(params));
4719
4720 if (info->attrs[NL80211_ATTR_MAC])
4721 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4722
4723 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4724 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4725 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4726 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4727 return -EINVAL;
4728
4729 if (!rdev->ops->del_station)
4730 return -EOPNOTSUPP;
4731
4732 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4733 params.subtype =
4734 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4735 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4736 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4737 return -EINVAL;
4738 } else {
4739 /* Default to Deauthentication frame */
4740 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4741 }
4742
4743 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4744 params.reason_code =
4745 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4746 if (params.reason_code == 0)
4747 return -EINVAL; /* 0 is reserved */
4748 } else {
4749 /* Default to reason code 2 */
4750 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4751 }
4752
4753 return rdev_del_station(rdev, dev, &params);
4754 }
4755
4756 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4757 int flags, struct net_device *dev,
4758 u8 *dst, u8 *next_hop,
4759 struct mpath_info *pinfo)
4760 {
4761 void *hdr;
4762 struct nlattr *pinfoattr;
4763
4764 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4765 if (!hdr)
4766 return -1;
4767
4768 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4769 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4770 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4771 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4772 goto nla_put_failure;
4773
4774 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4775 if (!pinfoattr)
4776 goto nla_put_failure;
4777 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4778 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4779 pinfo->frame_qlen))
4780 goto nla_put_failure;
4781 if (((pinfo->filled & MPATH_INFO_SN) &&
4782 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4783 ((pinfo->filled & MPATH_INFO_METRIC) &&
4784 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4785 pinfo->metric)) ||
4786 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4787 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4788 pinfo->exptime)) ||
4789 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4790 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4791 pinfo->flags)) ||
4792 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4793 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4794 pinfo->discovery_timeout)) ||
4795 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4796 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4797 pinfo->discovery_retries)))
4798 goto nla_put_failure;
4799
4800 nla_nest_end(msg, pinfoattr);
4801
4802 genlmsg_end(msg, hdr);
4803 return 0;
4804
4805 nla_put_failure:
4806 genlmsg_cancel(msg, hdr);
4807 return -EMSGSIZE;
4808 }
4809
4810 static int nl80211_dump_mpath(struct sk_buff *skb,
4811 struct netlink_callback *cb)
4812 {
4813 struct mpath_info pinfo;
4814 struct cfg80211_registered_device *rdev;
4815 struct wireless_dev *wdev;
4816 u8 dst[ETH_ALEN];
4817 u8 next_hop[ETH_ALEN];
4818 int path_idx = cb->args[2];
4819 int err;
4820
4821 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4822 if (err)
4823 return err;
4824
4825 if (!rdev->ops->dump_mpath) {
4826 err = -EOPNOTSUPP;
4827 goto out_err;
4828 }
4829
4830 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4831 err = -EOPNOTSUPP;
4832 goto out_err;
4833 }
4834
4835 while (1) {
4836 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4837 next_hop, &pinfo);
4838 if (err == -ENOENT)
4839 break;
4840 if (err)
4841 goto out_err;
4842
4843 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4844 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4845 wdev->netdev, dst, next_hop,
4846 &pinfo) < 0)
4847 goto out;
4848
4849 path_idx++;
4850 }
4851
4852 out:
4853 cb->args[2] = path_idx;
4854 err = skb->len;
4855 out_err:
4856 nl80211_finish_wdev_dump(rdev);
4857 return err;
4858 }
4859
4860 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4861 {
4862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4863 int err;
4864 struct net_device *dev = info->user_ptr[1];
4865 struct mpath_info pinfo;
4866 struct sk_buff *msg;
4867 u8 *dst = NULL;
4868 u8 next_hop[ETH_ALEN];
4869
4870 memset(&pinfo, 0, sizeof(pinfo));
4871
4872 if (!info->attrs[NL80211_ATTR_MAC])
4873 return -EINVAL;
4874
4875 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4876
4877 if (!rdev->ops->get_mpath)
4878 return -EOPNOTSUPP;
4879
4880 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4881 return -EOPNOTSUPP;
4882
4883 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4884 if (err)
4885 return err;
4886
4887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4888 if (!msg)
4889 return -ENOMEM;
4890
4891 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4892 dev, dst, next_hop, &pinfo) < 0) {
4893 nlmsg_free(msg);
4894 return -ENOBUFS;
4895 }
4896
4897 return genlmsg_reply(msg, info);
4898 }
4899
4900 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4901 {
4902 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4903 struct net_device *dev = info->user_ptr[1];
4904 u8 *dst = NULL;
4905 u8 *next_hop = NULL;
4906
4907 if (!info->attrs[NL80211_ATTR_MAC])
4908 return -EINVAL;
4909
4910 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4911 return -EINVAL;
4912
4913 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4914 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4915
4916 if (!rdev->ops->change_mpath)
4917 return -EOPNOTSUPP;
4918
4919 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4920 return -EOPNOTSUPP;
4921
4922 return rdev_change_mpath(rdev, dev, dst, next_hop);
4923 }
4924
4925 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4926 {
4927 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4928 struct net_device *dev = info->user_ptr[1];
4929 u8 *dst = NULL;
4930 u8 *next_hop = NULL;
4931
4932 if (!info->attrs[NL80211_ATTR_MAC])
4933 return -EINVAL;
4934
4935 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4936 return -EINVAL;
4937
4938 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4939 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4940
4941 if (!rdev->ops->add_mpath)
4942 return -EOPNOTSUPP;
4943
4944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4945 return -EOPNOTSUPP;
4946
4947 return rdev_add_mpath(rdev, dev, dst, next_hop);
4948 }
4949
4950 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4951 {
4952 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4953 struct net_device *dev = info->user_ptr[1];
4954 u8 *dst = NULL;
4955
4956 if (info->attrs[NL80211_ATTR_MAC])
4957 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4958
4959 if (!rdev->ops->del_mpath)
4960 return -EOPNOTSUPP;
4961
4962 return rdev_del_mpath(rdev, dev, dst);
4963 }
4964
4965 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4966 {
4967 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4968 int err;
4969 struct net_device *dev = info->user_ptr[1];
4970 struct mpath_info pinfo;
4971 struct sk_buff *msg;
4972 u8 *dst = NULL;
4973 u8 mpp[ETH_ALEN];
4974
4975 memset(&pinfo, 0, sizeof(pinfo));
4976
4977 if (!info->attrs[NL80211_ATTR_MAC])
4978 return -EINVAL;
4979
4980 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4981
4982 if (!rdev->ops->get_mpp)
4983 return -EOPNOTSUPP;
4984
4985 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4986 return -EOPNOTSUPP;
4987
4988 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4989 if (err)
4990 return err;
4991
4992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4993 if (!msg)
4994 return -ENOMEM;
4995
4996 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4997 dev, dst, mpp, &pinfo) < 0) {
4998 nlmsg_free(msg);
4999 return -ENOBUFS;
5000 }
5001
5002 return genlmsg_reply(msg, info);
5003 }
5004
5005 static int nl80211_dump_mpp(struct sk_buff *skb,
5006 struct netlink_callback *cb)
5007 {
5008 struct mpath_info pinfo;
5009 struct cfg80211_registered_device *rdev;
5010 struct wireless_dev *wdev;
5011 u8 dst[ETH_ALEN];
5012 u8 mpp[ETH_ALEN];
5013 int path_idx = cb->args[2];
5014 int err;
5015
5016 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5017 if (err)
5018 return err;
5019
5020 if (!rdev->ops->dump_mpp) {
5021 err = -EOPNOTSUPP;
5022 goto out_err;
5023 }
5024
5025 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
5026 err = -EOPNOTSUPP;
5027 goto out_err;
5028 }
5029
5030 while (1) {
5031 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
5032 mpp, &pinfo);
5033 if (err == -ENOENT)
5034 break;
5035 if (err)
5036 goto out_err;
5037
5038 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
5039 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5040 wdev->netdev, dst, mpp,
5041 &pinfo) < 0)
5042 goto out;
5043
5044 path_idx++;
5045 }
5046
5047 out:
5048 cb->args[2] = path_idx;
5049 err = skb->len;
5050 out_err:
5051 nl80211_finish_wdev_dump(rdev);
5052 return err;
5053 }
5054
5055 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
5056 {
5057 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5058 struct net_device *dev = info->user_ptr[1];
5059 struct wireless_dev *wdev = dev->ieee80211_ptr;
5060 struct bss_parameters params;
5061 int err;
5062
5063 memset(&params, 0, sizeof(params));
5064 /* default to not changing parameters */
5065 params.use_cts_prot = -1;
5066 params.use_short_preamble = -1;
5067 params.use_short_slot_time = -1;
5068 params.ap_isolate = -1;
5069 params.ht_opmode = -1;
5070 params.p2p_ctwindow = -1;
5071 params.p2p_opp_ps = -1;
5072
5073 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
5074 params.use_cts_prot =
5075 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
5076 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
5077 params.use_short_preamble =
5078 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
5079 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
5080 params.use_short_slot_time =
5081 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
5082 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5083 params.basic_rates =
5084 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5085 params.basic_rates_len =
5086 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5087 }
5088 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
5089 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
5090 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
5091 params.ht_opmode =
5092 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
5093
5094 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5095 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5096 return -EINVAL;
5097 params.p2p_ctwindow =
5098 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5099 if (params.p2p_ctwindow < 0)
5100 return -EINVAL;
5101 if (params.p2p_ctwindow != 0 &&
5102 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5103 return -EINVAL;
5104 }
5105
5106 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5107 u8 tmp;
5108
5109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5110 return -EINVAL;
5111 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5112 if (tmp > 1)
5113 return -EINVAL;
5114 params.p2p_opp_ps = tmp;
5115 if (params.p2p_opp_ps &&
5116 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5117 return -EINVAL;
5118 }
5119
5120 if (!rdev->ops->change_bss)
5121 return -EOPNOTSUPP;
5122
5123 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5124 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5125 return -EOPNOTSUPP;
5126
5127 wdev_lock(wdev);
5128 err = rdev_change_bss(rdev, dev, &params);
5129 wdev_unlock(wdev);
5130
5131 return err;
5132 }
5133
5134 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
5135 {
5136 char *data = NULL;
5137 bool is_indoor;
5138 enum nl80211_user_reg_hint_type user_reg_hint_type;
5139 u32 owner_nlportid;
5140
5141 /*
5142 * You should only get this when cfg80211 hasn't yet initialized
5143 * completely when built-in to the kernel right between the time
5144 * window between nl80211_init() and regulatory_init(), if that is
5145 * even possible.
5146 */
5147 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
5148 return -EINPROGRESS;
5149
5150 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
5151 user_reg_hint_type =
5152 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
5153 else
5154 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
5155
5156 switch (user_reg_hint_type) {
5157 case NL80211_USER_REG_HINT_USER:
5158 case NL80211_USER_REG_HINT_CELL_BASE:
5159 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5160 return -EINVAL;
5161
5162 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5163 return regulatory_hint_user(data, user_reg_hint_type);
5164 case NL80211_USER_REG_HINT_INDOOR:
5165 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5166 owner_nlportid = info->snd_portid;
5167 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5168 } else {
5169 owner_nlportid = 0;
5170 is_indoor = true;
5171 }
5172
5173 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5174 default:
5175 return -EINVAL;
5176 }
5177 }
5178
5179 static int nl80211_get_mesh_config(struct sk_buff *skb,
5180 struct genl_info *info)
5181 {
5182 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5183 struct net_device *dev = info->user_ptr[1];
5184 struct wireless_dev *wdev = dev->ieee80211_ptr;
5185 struct mesh_config cur_params;
5186 int err = 0;
5187 void *hdr;
5188 struct nlattr *pinfoattr;
5189 struct sk_buff *msg;
5190
5191 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5192 return -EOPNOTSUPP;
5193
5194 if (!rdev->ops->get_mesh_config)
5195 return -EOPNOTSUPP;
5196
5197 wdev_lock(wdev);
5198 /* If not connected, get default parameters */
5199 if (!wdev->mesh_id_len)
5200 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5201 else
5202 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5203 wdev_unlock(wdev);
5204
5205 if (err)
5206 return err;
5207
5208 /* Draw up a netlink message to send back */
5209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5210 if (!msg)
5211 return -ENOMEM;
5212 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5213 NL80211_CMD_GET_MESH_CONFIG);
5214 if (!hdr)
5215 goto out;
5216 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5217 if (!pinfoattr)
5218 goto nla_put_failure;
5219 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5220 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5221 cur_params.dot11MeshRetryTimeout) ||
5222 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5223 cur_params.dot11MeshConfirmTimeout) ||
5224 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5225 cur_params.dot11MeshHoldingTimeout) ||
5226 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5227 cur_params.dot11MeshMaxPeerLinks) ||
5228 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5229 cur_params.dot11MeshMaxRetries) ||
5230 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5231 cur_params.dot11MeshTTL) ||
5232 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5233 cur_params.element_ttl) ||
5234 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5235 cur_params.auto_open_plinks) ||
5236 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5237 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5238 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5239 cur_params.dot11MeshHWMPmaxPREQretries) ||
5240 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5241 cur_params.path_refresh_time) ||
5242 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5243 cur_params.min_discovery_timeout) ||
5244 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5245 cur_params.dot11MeshHWMPactivePathTimeout) ||
5246 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5247 cur_params.dot11MeshHWMPpreqMinInterval) ||
5248 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5249 cur_params.dot11MeshHWMPperrMinInterval) ||
5250 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5251 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5252 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5253 cur_params.dot11MeshHWMPRootMode) ||
5254 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5255 cur_params.dot11MeshHWMPRannInterval) ||
5256 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5257 cur_params.dot11MeshGateAnnouncementProtocol) ||
5258 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5259 cur_params.dot11MeshForwarding) ||
5260 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5261 cur_params.rssi_threshold) ||
5262 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5263 cur_params.ht_opmode) ||
5264 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5265 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5266 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5267 cur_params.dot11MeshHWMProotInterval) ||
5268 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5269 cur_params.dot11MeshHWMPconfirmationInterval) ||
5270 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5271 cur_params.power_mode) ||
5272 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5273 cur_params.dot11MeshAwakeWindowDuration) ||
5274 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5275 cur_params.plink_timeout))
5276 goto nla_put_failure;
5277 nla_nest_end(msg, pinfoattr);
5278 genlmsg_end(msg, hdr);
5279 return genlmsg_reply(msg, info);
5280
5281 nla_put_failure:
5282 genlmsg_cancel(msg, hdr);
5283 out:
5284 nlmsg_free(msg);
5285 return -ENOBUFS;
5286 }
5287
5288 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5289 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5290 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5291 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5292 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5293 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5294 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5295 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5296 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5297 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5298 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5299 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5300 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5301 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5302 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5303 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5304 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5305 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5306 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5307 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5308 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5309 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5310 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5311 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5312 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5313 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5314 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5315 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5316 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5317 };
5318
5319 static const struct nla_policy
5320 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5321 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5322 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5323 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5324 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5325 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5326 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5327 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5328 .len = IEEE80211_MAX_DATA_LEN },
5329 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5330 };
5331
5332 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out)
5333 {
5334 u8 val = nla_get_u8(nla);
5335 if (val < min || val > max)
5336 return -EINVAL;
5337 *out = val;
5338 return 0;
5339 }
5340
5341 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out)
5342 {
5343 u8 val = nla_get_u8(nla);
5344 if (val < min || val > max)
5345 return -EINVAL;
5346 *out = val;
5347 return 0;
5348 }
5349
5350 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out)
5351 {
5352 u16 val = nla_get_u16(nla);
5353 if (val < min || val > max)
5354 return -EINVAL;
5355 *out = val;
5356 return 0;
5357 }
5358
5359 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out)
5360 {
5361 u32 val = nla_get_u32(nla);
5362 if (val < min || val > max)
5363 return -EINVAL;
5364 *out = val;
5365 return 0;
5366 }
5367
5368 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out)
5369 {
5370 s32 val = nla_get_s32(nla);
5371 if (val < min || val > max)
5372 return -EINVAL;
5373 *out = val;
5374 return 0;
5375 }
5376
5377 static int nl80211_parse_mesh_config(struct genl_info *info,
5378 struct mesh_config *cfg,
5379 u32 *mask_out)
5380 {
5381 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5382 u32 mask = 0;
5383 u16 ht_opmode;
5384
5385 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5386 do { \
5387 if (tb[attr]) { \
5388 if (fn(tb[attr], min, max, &cfg->param)) \
5389 return -EINVAL; \
5390 mask |= (1 << (attr - 1)); \
5391 } \
5392 } while (0)
5393
5394 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5395 return -EINVAL;
5396 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5397 info->attrs[NL80211_ATTR_MESH_CONFIG],
5398 nl80211_meshconf_params_policy))
5399 return -EINVAL;
5400
5401 /* This makes sure that there aren't more than 32 mesh config
5402 * parameters (otherwise our bitfield scheme would not work.) */
5403 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5404
5405 /* Fill in the params struct */
5406 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5407 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5408 nl80211_check_u16);
5409 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5410 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5411 nl80211_check_u16);
5412 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5413 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5414 nl80211_check_u16);
5415 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5416 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5417 nl80211_check_u16);
5418 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5419 mask, NL80211_MESHCONF_MAX_RETRIES,
5420 nl80211_check_u8);
5421 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5422 mask, NL80211_MESHCONF_TTL, nl80211_check_u8);
5423 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5424 mask, NL80211_MESHCONF_ELEMENT_TTL,
5425 nl80211_check_u8);
5426 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5427 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5428 nl80211_check_bool);
5429 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5430 1, 255, mask,
5431 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5432 nl80211_check_u32);
5433 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5434 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5435 nl80211_check_u8);
5436 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5437 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5438 nl80211_check_u32);
5439 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5440 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5441 nl80211_check_u16);
5442 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5443 1, 65535, mask,
5444 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5445 nl80211_check_u32);
5446 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5447 1, 65535, mask,
5448 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5449 nl80211_check_u16);
5450 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5451 1, 65535, mask,
5452 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5453 nl80211_check_u16);
5454 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5455 dot11MeshHWMPnetDiameterTraversalTime,
5456 1, 65535, mask,
5457 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5458 nl80211_check_u16);
5459 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5460 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5461 nl80211_check_u8);
5462 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5463 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5464 nl80211_check_u16);
5465 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5466 dot11MeshGateAnnouncementProtocol, 0, 1,
5467 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5468 nl80211_check_bool);
5469 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5470 mask, NL80211_MESHCONF_FORWARDING,
5471 nl80211_check_bool);
5472 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5473 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5474 nl80211_check_s32);
5475 /*
5476 * Check HT operation mode based on
5477 * IEEE 802.11 2012 8.4.2.59 HT Operation element.
5478 */
5479 if (tb[NL80211_MESHCONF_HT_OPMODE]) {
5480 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
5481
5482 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
5483 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
5484 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5485 return -EINVAL;
5486
5487 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) &&
5488 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5489 return -EINVAL;
5490
5491 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) {
5492 case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
5493 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
5494 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)
5495 return -EINVAL;
5496 break;
5497 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
5498 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
5499 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
5500 return -EINVAL;
5501 break;
5502 }
5503 cfg->ht_opmode = ht_opmode;
5504 }
5505 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5506 1, 65535, mask,
5507 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5508 nl80211_check_u32);
5509 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5510 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5511 nl80211_check_u16);
5512 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5513 dot11MeshHWMPconfirmationInterval,
5514 1, 65535, mask,
5515 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5516 nl80211_check_u16);
5517 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5518 NL80211_MESH_POWER_ACTIVE,
5519 NL80211_MESH_POWER_MAX,
5520 mask, NL80211_MESHCONF_POWER_MODE,
5521 nl80211_check_u32);
5522 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5523 0, 65535, mask,
5524 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16);
5525 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5526 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5527 nl80211_check_u32);
5528 if (mask_out)
5529 *mask_out = mask;
5530
5531 return 0;
5532
5533 #undef FILL_IN_MESH_PARAM_IF_SET
5534 }
5535
5536 static int nl80211_parse_mesh_setup(struct genl_info *info,
5537 struct mesh_setup *setup)
5538 {
5539 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5540 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5541
5542 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5543 return -EINVAL;
5544 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5545 info->attrs[NL80211_ATTR_MESH_SETUP],
5546 nl80211_mesh_setup_params_policy))
5547 return -EINVAL;
5548
5549 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5550 setup->sync_method =
5551 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5552 IEEE80211_SYNC_METHOD_VENDOR :
5553 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5554
5555 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5556 setup->path_sel_proto =
5557 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5558 IEEE80211_PATH_PROTOCOL_VENDOR :
5559 IEEE80211_PATH_PROTOCOL_HWMP;
5560
5561 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5562 setup->path_metric =
5563 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5564 IEEE80211_PATH_METRIC_VENDOR :
5565 IEEE80211_PATH_METRIC_AIRTIME;
5566
5567 if (tb[NL80211_MESH_SETUP_IE]) {
5568 struct nlattr *ieattr =
5569 tb[NL80211_MESH_SETUP_IE];
5570 if (!is_valid_ie_attr(ieattr))
5571 return -EINVAL;
5572 setup->ie = nla_data(ieattr);
5573 setup->ie_len = nla_len(ieattr);
5574 }
5575 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5576 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5577 return -EINVAL;
5578 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5579 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5580 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5581 if (setup->is_secure)
5582 setup->user_mpm = true;
5583
5584 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5585 if (!setup->user_mpm)
5586 return -EINVAL;
5587 setup->auth_id =
5588 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5589 }
5590
5591 return 0;
5592 }
5593
5594 static int nl80211_update_mesh_config(struct sk_buff *skb,
5595 struct genl_info *info)
5596 {
5597 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5598 struct net_device *dev = info->user_ptr[1];
5599 struct wireless_dev *wdev = dev->ieee80211_ptr;
5600 struct mesh_config cfg;
5601 u32 mask;
5602 int err;
5603
5604 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5605 return -EOPNOTSUPP;
5606
5607 if (!rdev->ops->update_mesh_config)
5608 return -EOPNOTSUPP;
5609
5610 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5611 if (err)
5612 return err;
5613
5614 wdev_lock(wdev);
5615 if (!wdev->mesh_id_len)
5616 err = -ENOLINK;
5617
5618 if (!err)
5619 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5620
5621 wdev_unlock(wdev);
5622
5623 return err;
5624 }
5625
5626 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5627 struct sk_buff *msg)
5628 {
5629 struct nlattr *nl_reg_rules;
5630 unsigned int i;
5631
5632 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5633 (regdom->dfs_region &&
5634 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5635 goto nla_put_failure;
5636
5637 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5638 if (!nl_reg_rules)
5639 goto nla_put_failure;
5640
5641 for (i = 0; i < regdom->n_reg_rules; i++) {
5642 struct nlattr *nl_reg_rule;
5643 const struct ieee80211_reg_rule *reg_rule;
5644 const struct ieee80211_freq_range *freq_range;
5645 const struct ieee80211_power_rule *power_rule;
5646 unsigned int max_bandwidth_khz;
5647
5648 reg_rule = &regdom->reg_rules[i];
5649 freq_range = &reg_rule->freq_range;
5650 power_rule = &reg_rule->power_rule;
5651
5652 nl_reg_rule = nla_nest_start(msg, i);
5653 if (!nl_reg_rule)
5654 goto nla_put_failure;
5655
5656 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5657 if (!max_bandwidth_khz)
5658 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5659 reg_rule);
5660
5661 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5662 reg_rule->flags) ||
5663 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5664 freq_range->start_freq_khz) ||
5665 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5666 freq_range->end_freq_khz) ||
5667 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5668 max_bandwidth_khz) ||
5669 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5670 power_rule->max_antenna_gain) ||
5671 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5672 power_rule->max_eirp) ||
5673 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5674 reg_rule->dfs_cac_ms))
5675 goto nla_put_failure;
5676
5677 nla_nest_end(msg, nl_reg_rule);
5678 }
5679
5680 nla_nest_end(msg, nl_reg_rules);
5681 return 0;
5682
5683 nla_put_failure:
5684 return -EMSGSIZE;
5685 }
5686
5687 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5688 {
5689 const struct ieee80211_regdomain *regdom = NULL;
5690 struct cfg80211_registered_device *rdev;
5691 struct wiphy *wiphy = NULL;
5692 struct sk_buff *msg;
5693 void *hdr;
5694
5695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5696 if (!msg)
5697 return -ENOBUFS;
5698
5699 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5700 NL80211_CMD_GET_REG);
5701 if (!hdr)
5702 goto put_failure;
5703
5704 if (info->attrs[NL80211_ATTR_WIPHY]) {
5705 bool self_managed;
5706
5707 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5708 if (IS_ERR(rdev)) {
5709 nlmsg_free(msg);
5710 return PTR_ERR(rdev);
5711 }
5712
5713 wiphy = &rdev->wiphy;
5714 self_managed = wiphy->regulatory_flags &
5715 REGULATORY_WIPHY_SELF_MANAGED;
5716 regdom = get_wiphy_regdom(wiphy);
5717
5718 /* a self-managed-reg device must have a private regdom */
5719 if (WARN_ON(!regdom && self_managed)) {
5720 nlmsg_free(msg);
5721 return -EINVAL;
5722 }
5723
5724 if (regdom &&
5725 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5726 goto nla_put_failure;
5727 }
5728
5729 if (!wiphy && reg_last_request_cell_base() &&
5730 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5731 NL80211_USER_REG_HINT_CELL_BASE))
5732 goto nla_put_failure;
5733
5734 rcu_read_lock();
5735
5736 if (!regdom)
5737 regdom = rcu_dereference(cfg80211_regdomain);
5738
5739 if (nl80211_put_regdom(regdom, msg))
5740 goto nla_put_failure_rcu;
5741
5742 rcu_read_unlock();
5743
5744 genlmsg_end(msg, hdr);
5745 return genlmsg_reply(msg, info);
5746
5747 nla_put_failure_rcu:
5748 rcu_read_unlock();
5749 nla_put_failure:
5750 genlmsg_cancel(msg, hdr);
5751 put_failure:
5752 nlmsg_free(msg);
5753 return -EMSGSIZE;
5754 }
5755
5756 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5757 u32 seq, int flags, struct wiphy *wiphy,
5758 const struct ieee80211_regdomain *regdom)
5759 {
5760 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5761 NL80211_CMD_GET_REG);
5762
5763 if (!hdr)
5764 return -1;
5765
5766 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5767
5768 if (nl80211_put_regdom(regdom, msg))
5769 goto nla_put_failure;
5770
5771 if (!wiphy && reg_last_request_cell_base() &&
5772 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5773 NL80211_USER_REG_HINT_CELL_BASE))
5774 goto nla_put_failure;
5775
5776 if (wiphy &&
5777 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5778 goto nla_put_failure;
5779
5780 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5781 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5782 goto nla_put_failure;
5783
5784 genlmsg_end(msg, hdr);
5785 return 0;
5786
5787 nla_put_failure:
5788 genlmsg_cancel(msg, hdr);
5789 return -EMSGSIZE;
5790 }
5791
5792 static int nl80211_get_reg_dump(struct sk_buff *skb,
5793 struct netlink_callback *cb)
5794 {
5795 const struct ieee80211_regdomain *regdom = NULL;
5796 struct cfg80211_registered_device *rdev;
5797 int err, reg_idx, start = cb->args[2];
5798
5799 rtnl_lock();
5800
5801 if (cfg80211_regdomain && start == 0) {
5802 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5803 NLM_F_MULTI, NULL,
5804 rtnl_dereference(cfg80211_regdomain));
5805 if (err < 0)
5806 goto out_err;
5807 }
5808
5809 /* the global regdom is idx 0 */
5810 reg_idx = 1;
5811 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5812 regdom = get_wiphy_regdom(&rdev->wiphy);
5813 if (!regdom)
5814 continue;
5815
5816 if (++reg_idx <= start)
5817 continue;
5818
5819 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5820 NLM_F_MULTI, &rdev->wiphy, regdom);
5821 if (err < 0) {
5822 reg_idx--;
5823 break;
5824 }
5825 }
5826
5827 cb->args[2] = reg_idx;
5828 err = skb->len;
5829 out_err:
5830 rtnl_unlock();
5831 return err;
5832 }
5833
5834 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5835 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5836 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5837 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5838 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5839 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5840 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5841 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5842 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5843 };
5844
5845 static int parse_reg_rule(struct nlattr *tb[],
5846 struct ieee80211_reg_rule *reg_rule)
5847 {
5848 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5849 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5850
5851 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5852 return -EINVAL;
5853 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5854 return -EINVAL;
5855 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5856 return -EINVAL;
5857 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5858 return -EINVAL;
5859 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5860 return -EINVAL;
5861
5862 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5863
5864 freq_range->start_freq_khz =
5865 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5866 freq_range->end_freq_khz =
5867 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5868 freq_range->max_bandwidth_khz =
5869 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5870
5871 power_rule->max_eirp =
5872 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5873
5874 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5875 power_rule->max_antenna_gain =
5876 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5877
5878 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5879 reg_rule->dfs_cac_ms =
5880 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5881
5882 return 0;
5883 }
5884
5885 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5886 {
5887 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5888 struct nlattr *nl_reg_rule;
5889 char *alpha2;
5890 int rem_reg_rules, r;
5891 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5892 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5893 struct ieee80211_regdomain *rd;
5894
5895 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5896 return -EINVAL;
5897
5898 if (!info->attrs[NL80211_ATTR_REG_RULES])
5899 return -EINVAL;
5900
5901 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5902
5903 if (info->attrs[NL80211_ATTR_DFS_REGION])
5904 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5905
5906 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5907 rem_reg_rules) {
5908 num_rules++;
5909 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5910 return -EINVAL;
5911 }
5912
5913 if (!reg_is_valid_request(alpha2))
5914 return -EINVAL;
5915
5916 size_of_regd = sizeof(struct ieee80211_regdomain) +
5917 num_rules * sizeof(struct ieee80211_reg_rule);
5918
5919 rd = kzalloc(size_of_regd, GFP_KERNEL);
5920 if (!rd)
5921 return -ENOMEM;
5922
5923 rd->n_reg_rules = num_rules;
5924 rd->alpha2[0] = alpha2[0];
5925 rd->alpha2[1] = alpha2[1];
5926
5927 /*
5928 * Disable DFS master mode if the DFS region was
5929 * not supported or known on this kernel.
5930 */
5931 if (reg_supported_dfs_region(dfs_region))
5932 rd->dfs_region = dfs_region;
5933
5934 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5935 rem_reg_rules) {
5936 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5937 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5938 reg_rule_policy);
5939 if (r)
5940 goto bad_reg;
5941 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5942 if (r)
5943 goto bad_reg;
5944
5945 rule_idx++;
5946
5947 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5948 r = -EINVAL;
5949 goto bad_reg;
5950 }
5951 }
5952
5953 /* set_regdom takes ownership of rd */
5954 return set_regdom(rd, REGD_SOURCE_CRDA);
5955 bad_reg:
5956 kfree(rd);
5957 return r;
5958 }
5959 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5960
5961 static int validate_scan_freqs(struct nlattr *freqs)
5962 {
5963 struct nlattr *attr1, *attr2;
5964 int n_channels = 0, tmp1, tmp2;
5965
5966 nla_for_each_nested(attr1, freqs, tmp1) {
5967 n_channels++;
5968 /*
5969 * Some hardware has a limited channel list for
5970 * scanning, and it is pretty much nonsensical
5971 * to scan for a channel twice, so disallow that
5972 * and don't require drivers to check that the
5973 * channel list they get isn't longer than what
5974 * they can scan, as long as they can scan all
5975 * the channels they registered at once.
5976 */
5977 nla_for_each_nested(attr2, freqs, tmp2)
5978 if (attr1 != attr2 &&
5979 nla_get_u32(attr1) == nla_get_u32(attr2))
5980 return 0;
5981 }
5982
5983 return n_channels;
5984 }
5985
5986 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
5987 {
5988 return b < NUM_NL80211_BANDS && wiphy->bands[b];
5989 }
5990
5991 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
5992 struct cfg80211_bss_selection *bss_select)
5993 {
5994 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
5995 struct nlattr *nest;
5996 int err;
5997 bool found = false;
5998 int i;
5999
6000 /* only process one nested attribute */
6001 nest = nla_data(nla);
6002 if (!nla_ok(nest, nla_len(nest)))
6003 return -EINVAL;
6004
6005 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest),
6006 nla_len(nest), nl80211_bss_select_policy);
6007 if (err)
6008 return err;
6009
6010 /* only one attribute may be given */
6011 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
6012 if (attr[i]) {
6013 if (found)
6014 return -EINVAL;
6015 found = true;
6016 }
6017 }
6018
6019 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
6020
6021 if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
6022 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
6023
6024 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
6025 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
6026 bss_select->param.band_pref =
6027 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
6028 if (!is_band_valid(wiphy, bss_select->param.band_pref))
6029 return -EINVAL;
6030 }
6031
6032 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
6033 struct nl80211_bss_select_rssi_adjust *adj_param;
6034
6035 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
6036 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
6037 bss_select->param.adjust.band = adj_param->band;
6038 bss_select->param.adjust.delta = adj_param->delta;
6039 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
6040 return -EINVAL;
6041 }
6042
6043 /* user-space did not provide behaviour attribute */
6044 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
6045 return -EINVAL;
6046
6047 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
6048 return -EINVAL;
6049
6050 return 0;
6051 }
6052
6053 static int nl80211_parse_random_mac(struct nlattr **attrs,
6054 u8 *mac_addr, u8 *mac_addr_mask)
6055 {
6056 int i;
6057
6058 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
6059 eth_zero_addr(mac_addr);
6060 eth_zero_addr(mac_addr_mask);
6061 mac_addr[0] = 0x2;
6062 mac_addr_mask[0] = 0x3;
6063
6064 return 0;
6065 }
6066
6067 /* need both or none */
6068 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
6069 return -EINVAL;
6070
6071 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
6072 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
6073
6074 /* don't allow or configure an mcast address */
6075 if (!is_multicast_ether_addr(mac_addr_mask) ||
6076 is_multicast_ether_addr(mac_addr))
6077 return -EINVAL;
6078
6079 /*
6080 * allow users to pass a MAC address that has bits set outside
6081 * of the mask, but don't bother drivers with having to deal
6082 * with such bits
6083 */
6084 for (i = 0; i < ETH_ALEN; i++)
6085 mac_addr[i] &= mac_addr_mask[i];
6086
6087 return 0;
6088 }
6089
6090 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
6091 {
6092 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6093 struct wireless_dev *wdev = info->user_ptr[1];
6094 struct cfg80211_scan_request *request;
6095 struct nlattr *attr;
6096 struct wiphy *wiphy;
6097 int err, tmp, n_ssids = 0, n_channels, i;
6098 size_t ie_len;
6099
6100 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6101 return -EINVAL;
6102
6103 wiphy = &rdev->wiphy;
6104
6105 if (!rdev->ops->scan)
6106 return -EOPNOTSUPP;
6107
6108 if (rdev->scan_req || rdev->scan_msg) {
6109 err = -EBUSY;
6110 goto unlock;
6111 }
6112
6113 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6114 n_channels = validate_scan_freqs(
6115 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6116 if (!n_channels) {
6117 err = -EINVAL;
6118 goto unlock;
6119 }
6120 } else {
6121 n_channels = ieee80211_get_num_supported_channels(wiphy);
6122 }
6123
6124 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
6125 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
6126 n_ssids++;
6127
6128 if (n_ssids > wiphy->max_scan_ssids) {
6129 err = -EINVAL;
6130 goto unlock;
6131 }
6132
6133 if (info->attrs[NL80211_ATTR_IE])
6134 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6135 else
6136 ie_len = 0;
6137
6138 if (ie_len > wiphy->max_scan_ie_len) {
6139 err = -EINVAL;
6140 goto unlock;
6141 }
6142
6143 request = kzalloc(sizeof(*request)
6144 + sizeof(*request->ssids) * n_ssids
6145 + sizeof(*request->channels) * n_channels
6146 + ie_len, GFP_KERNEL);
6147 if (!request) {
6148 err = -ENOMEM;
6149 goto unlock;
6150 }
6151
6152 if (n_ssids)
6153 request->ssids = (void *)&request->channels[n_channels];
6154 request->n_ssids = n_ssids;
6155 if (ie_len) {
6156 if (n_ssids)
6157 request->ie = (void *)(request->ssids + n_ssids);
6158 else
6159 request->ie = (void *)(request->channels + n_channels);
6160 }
6161
6162 i = 0;
6163 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6164 /* user specified, bail out if channel not found */
6165 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
6166 struct ieee80211_channel *chan;
6167
6168 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6169
6170 if (!chan) {
6171 err = -EINVAL;
6172 goto out_free;
6173 }
6174
6175 /* ignore disabled channels */
6176 if (chan->flags & IEEE80211_CHAN_DISABLED)
6177 continue;
6178
6179 request->channels[i] = chan;
6180 i++;
6181 }
6182 } else {
6183 enum nl80211_band band;
6184
6185 /* all channels */
6186 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6187 int j;
6188
6189 if (!wiphy->bands[band])
6190 continue;
6191 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6192 struct ieee80211_channel *chan;
6193
6194 chan = &wiphy->bands[band]->channels[j];
6195
6196 if (chan->flags & IEEE80211_CHAN_DISABLED)
6197 continue;
6198
6199 request->channels[i] = chan;
6200 i++;
6201 }
6202 }
6203 }
6204
6205 if (!i) {
6206 err = -EINVAL;
6207 goto out_free;
6208 }
6209
6210 request->n_channels = i;
6211
6212 i = 0;
6213 if (n_ssids) {
6214 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
6215 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6216 err = -EINVAL;
6217 goto out_free;
6218 }
6219 request->ssids[i].ssid_len = nla_len(attr);
6220 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
6221 i++;
6222 }
6223 }
6224
6225 if (info->attrs[NL80211_ATTR_IE]) {
6226 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6227 memcpy((void *)request->ie,
6228 nla_data(info->attrs[NL80211_ATTR_IE]),
6229 request->ie_len);
6230 }
6231
6232 for (i = 0; i < NUM_NL80211_BANDS; i++)
6233 if (wiphy->bands[i])
6234 request->rates[i] =
6235 (1 << wiphy->bands[i]->n_bitrates) - 1;
6236
6237 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
6238 nla_for_each_nested(attr,
6239 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
6240 tmp) {
6241 enum nl80211_band band = nla_type(attr);
6242
6243 if (band < 0 || band >= NUM_NL80211_BANDS) {
6244 err = -EINVAL;
6245 goto out_free;
6246 }
6247
6248 if (!wiphy->bands[band])
6249 continue;
6250
6251 err = ieee80211_get_ratemask(wiphy->bands[band],
6252 nla_data(attr),
6253 nla_len(attr),
6254 &request->rates[band]);
6255 if (err)
6256 goto out_free;
6257 }
6258 }
6259
6260 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
6261 if (!wiphy_ext_feature_isset(wiphy,
6262 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
6263 err = -EOPNOTSUPP;
6264 goto out_free;
6265 }
6266
6267 request->duration =
6268 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
6269 request->duration_mandatory =
6270 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
6271 }
6272
6273 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
6274 request->flags = nla_get_u32(
6275 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
6276 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6277 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6278 err = -EOPNOTSUPP;
6279 goto out_free;
6280 }
6281
6282 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6283 if (!(wiphy->features &
6284 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
6285 err = -EOPNOTSUPP;
6286 goto out_free;
6287 }
6288
6289 if (wdev->current_bss) {
6290 err = -EOPNOTSUPP;
6291 goto out_free;
6292 }
6293
6294 err = nl80211_parse_random_mac(info->attrs,
6295 request->mac_addr,
6296 request->mac_addr_mask);
6297 if (err)
6298 goto out_free;
6299 }
6300 }
6301
6302 request->no_cck =
6303 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6304
6305 if (info->attrs[NL80211_ATTR_MAC])
6306 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
6307 ETH_ALEN);
6308 else
6309 eth_broadcast_addr(request->bssid);
6310
6311 request->wdev = wdev;
6312 request->wiphy = &rdev->wiphy;
6313 request->scan_start = jiffies;
6314
6315 rdev->scan_req = request;
6316 err = rdev_scan(rdev, request);
6317
6318 if (!err) {
6319 nl80211_send_scan_start(rdev, wdev);
6320 if (wdev->netdev)
6321 dev_hold(wdev->netdev);
6322 } else {
6323 out_free:
6324 rdev->scan_req = NULL;
6325 kfree(request);
6326 }
6327
6328 unlock:
6329 return err;
6330 }
6331
6332 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6333 {
6334 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6335 struct wireless_dev *wdev = info->user_ptr[1];
6336
6337 if (!rdev->ops->abort_scan)
6338 return -EOPNOTSUPP;
6339
6340 if (rdev->scan_msg)
6341 return 0;
6342
6343 if (!rdev->scan_req)
6344 return -ENOENT;
6345
6346 rdev_abort_scan(rdev, wdev);
6347 return 0;
6348 }
6349
6350 static int
6351 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6352 struct cfg80211_sched_scan_request *request,
6353 struct nlattr **attrs)
6354 {
6355 int tmp, err, i = 0;
6356 struct nlattr *attr;
6357
6358 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6359 u32 interval;
6360
6361 /*
6362 * If scan plans are not specified,
6363 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6364 * case one scan plan will be set with the specified scan
6365 * interval and infinite number of iterations.
6366 */
6367 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6368 return -EINVAL;
6369
6370 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6371 if (!interval)
6372 return -EINVAL;
6373
6374 request->scan_plans[0].interval =
6375 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6376 if (!request->scan_plans[0].interval)
6377 return -EINVAL;
6378
6379 if (request->scan_plans[0].interval >
6380 wiphy->max_sched_scan_plan_interval)
6381 request->scan_plans[0].interval =
6382 wiphy->max_sched_scan_plan_interval;
6383
6384 return 0;
6385 }
6386
6387 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6388 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6389
6390 if (WARN_ON(i >= n_plans))
6391 return -EINVAL;
6392
6393 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6394 nla_data(attr), nla_len(attr),
6395 nl80211_plan_policy);
6396 if (err)
6397 return err;
6398
6399 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6400 return -EINVAL;
6401
6402 request->scan_plans[i].interval =
6403 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6404 if (!request->scan_plans[i].interval ||
6405 request->scan_plans[i].interval >
6406 wiphy->max_sched_scan_plan_interval)
6407 return -EINVAL;
6408
6409 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6410 request->scan_plans[i].iterations =
6411 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6412 if (!request->scan_plans[i].iterations ||
6413 (request->scan_plans[i].iterations >
6414 wiphy->max_sched_scan_plan_iterations))
6415 return -EINVAL;
6416 } else if (i < n_plans - 1) {
6417 /*
6418 * All scan plans but the last one must specify
6419 * a finite number of iterations
6420 */
6421 return -EINVAL;
6422 }
6423
6424 i++;
6425 }
6426
6427 /*
6428 * The last scan plan must not specify the number of
6429 * iterations, it is supposed to run infinitely
6430 */
6431 if (request->scan_plans[n_plans - 1].iterations)
6432 return -EINVAL;
6433
6434 return 0;
6435 }
6436
6437 static struct cfg80211_sched_scan_request *
6438 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6439 struct nlattr **attrs)
6440 {
6441 struct cfg80211_sched_scan_request *request;
6442 struct nlattr *attr;
6443 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6444 enum nl80211_band band;
6445 size_t ie_len;
6446 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6447 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6448
6449 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6450 return ERR_PTR(-EINVAL);
6451
6452 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6453 n_channels = validate_scan_freqs(
6454 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6455 if (!n_channels)
6456 return ERR_PTR(-EINVAL);
6457 } else {
6458 n_channels = ieee80211_get_num_supported_channels(wiphy);
6459 }
6460
6461 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6462 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6463 tmp)
6464 n_ssids++;
6465
6466 if (n_ssids > wiphy->max_sched_scan_ssids)
6467 return ERR_PTR(-EINVAL);
6468
6469 /*
6470 * First, count the number of 'real' matchsets. Due to an issue with
6471 * the old implementation, matchsets containing only the RSSI attribute
6472 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6473 * RSSI for all matchsets, rather than their own matchset for reporting
6474 * all APs with a strong RSSI. This is needed to be compatible with
6475 * older userspace that treated a matchset with only the RSSI as the
6476 * global RSSI for all other matchsets - if there are other matchsets.
6477 */
6478 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6479 nla_for_each_nested(attr,
6480 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6481 tmp) {
6482 struct nlattr *rssi;
6483
6484 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6485 nla_data(attr), nla_len(attr),
6486 nl80211_match_policy);
6487 if (err)
6488 return ERR_PTR(err);
6489 /* add other standalone attributes here */
6490 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6491 n_match_sets++;
6492 continue;
6493 }
6494 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6495 if (rssi)
6496 default_match_rssi = nla_get_s32(rssi);
6497 }
6498 }
6499
6500 /* However, if there's no other matchset, add the RSSI one */
6501 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6502 n_match_sets = 1;
6503
6504 if (n_match_sets > wiphy->max_match_sets)
6505 return ERR_PTR(-EINVAL);
6506
6507 if (attrs[NL80211_ATTR_IE])
6508 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6509 else
6510 ie_len = 0;
6511
6512 if (ie_len > wiphy->max_sched_scan_ie_len)
6513 return ERR_PTR(-EINVAL);
6514
6515 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6516 /*
6517 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6518 * each scan plan already specifies its own interval
6519 */
6520 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6521 return ERR_PTR(-EINVAL);
6522
6523 nla_for_each_nested(attr,
6524 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6525 n_plans++;
6526 } else {
6527 /*
6528 * The scan interval attribute is kept for backward
6529 * compatibility. If no scan plans are specified and sched scan
6530 * interval is specified, one scan plan will be set with this
6531 * scan interval and infinite number of iterations.
6532 */
6533 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6534 return ERR_PTR(-EINVAL);
6535
6536 n_plans = 1;
6537 }
6538
6539 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6540 return ERR_PTR(-EINVAL);
6541
6542 request = kzalloc(sizeof(*request)
6543 + sizeof(*request->ssids) * n_ssids
6544 + sizeof(*request->match_sets) * n_match_sets
6545 + sizeof(*request->scan_plans) * n_plans
6546 + sizeof(*request->channels) * n_channels
6547 + ie_len, GFP_KERNEL);
6548 if (!request)
6549 return ERR_PTR(-ENOMEM);
6550
6551 if (n_ssids)
6552 request->ssids = (void *)&request->channels[n_channels];
6553 request->n_ssids = n_ssids;
6554 if (ie_len) {
6555 if (n_ssids)
6556 request->ie = (void *)(request->ssids + n_ssids);
6557 else
6558 request->ie = (void *)(request->channels + n_channels);
6559 }
6560
6561 if (n_match_sets) {
6562 if (request->ie)
6563 request->match_sets = (void *)(request->ie + ie_len);
6564 else if (n_ssids)
6565 request->match_sets =
6566 (void *)(request->ssids + n_ssids);
6567 else
6568 request->match_sets =
6569 (void *)(request->channels + n_channels);
6570 }
6571 request->n_match_sets = n_match_sets;
6572
6573 if (n_match_sets)
6574 request->scan_plans = (void *)(request->match_sets +
6575 n_match_sets);
6576 else if (request->ie)
6577 request->scan_plans = (void *)(request->ie + ie_len);
6578 else if (n_ssids)
6579 request->scan_plans = (void *)(request->ssids + n_ssids);
6580 else
6581 request->scan_plans = (void *)(request->channels + n_channels);
6582
6583 request->n_scan_plans = n_plans;
6584
6585 i = 0;
6586 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6587 /* user specified, bail out if channel not found */
6588 nla_for_each_nested(attr,
6589 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6590 tmp) {
6591 struct ieee80211_channel *chan;
6592
6593 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6594
6595 if (!chan) {
6596 err = -EINVAL;
6597 goto out_free;
6598 }
6599
6600 /* ignore disabled channels */
6601 if (chan->flags & IEEE80211_CHAN_DISABLED)
6602 continue;
6603
6604 request->channels[i] = chan;
6605 i++;
6606 }
6607 } else {
6608 /* all channels */
6609 for (band = 0; band < NUM_NL80211_BANDS; band++) {
6610 int j;
6611
6612 if (!wiphy->bands[band])
6613 continue;
6614 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6615 struct ieee80211_channel *chan;
6616
6617 chan = &wiphy->bands[band]->channels[j];
6618
6619 if (chan->flags & IEEE80211_CHAN_DISABLED)
6620 continue;
6621
6622 request->channels[i] = chan;
6623 i++;
6624 }
6625 }
6626 }
6627
6628 if (!i) {
6629 err = -EINVAL;
6630 goto out_free;
6631 }
6632
6633 request->n_channels = i;
6634
6635 i = 0;
6636 if (n_ssids) {
6637 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6638 tmp) {
6639 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6640 err = -EINVAL;
6641 goto out_free;
6642 }
6643 request->ssids[i].ssid_len = nla_len(attr);
6644 memcpy(request->ssids[i].ssid, nla_data(attr),
6645 nla_len(attr));
6646 i++;
6647 }
6648 }
6649
6650 i = 0;
6651 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6652 nla_for_each_nested(attr,
6653 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6654 tmp) {
6655 struct nlattr *ssid, *rssi;
6656
6657 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6658 nla_data(attr), nla_len(attr),
6659 nl80211_match_policy);
6660 if (err)
6661 goto out_free;
6662 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6663 if (ssid) {
6664 if (WARN_ON(i >= n_match_sets)) {
6665 /* this indicates a programming error,
6666 * the loop above should have verified
6667 * things properly
6668 */
6669 err = -EINVAL;
6670 goto out_free;
6671 }
6672
6673 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6674 err = -EINVAL;
6675 goto out_free;
6676 }
6677 memcpy(request->match_sets[i].ssid.ssid,
6678 nla_data(ssid), nla_len(ssid));
6679 request->match_sets[i].ssid.ssid_len =
6680 nla_len(ssid);
6681 /* special attribute - old implementation w/a */
6682 request->match_sets[i].rssi_thold =
6683 default_match_rssi;
6684 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6685 if (rssi)
6686 request->match_sets[i].rssi_thold =
6687 nla_get_s32(rssi);
6688 }
6689 i++;
6690 }
6691
6692 /* there was no other matchset, so the RSSI one is alone */
6693 if (i == 0 && n_match_sets)
6694 request->match_sets[0].rssi_thold = default_match_rssi;
6695
6696 request->min_rssi_thold = INT_MAX;
6697 for (i = 0; i < n_match_sets; i++)
6698 request->min_rssi_thold =
6699 min(request->match_sets[i].rssi_thold,
6700 request->min_rssi_thold);
6701 } else {
6702 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6703 }
6704
6705 if (ie_len) {
6706 request->ie_len = ie_len;
6707 memcpy((void *)request->ie,
6708 nla_data(attrs[NL80211_ATTR_IE]),
6709 request->ie_len);
6710 }
6711
6712 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6713 request->flags = nla_get_u32(
6714 attrs[NL80211_ATTR_SCAN_FLAGS]);
6715 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6716 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6717 err = -EOPNOTSUPP;
6718 goto out_free;
6719 }
6720
6721 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6722 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6723
6724 if (!wdev) /* must be net-detect */
6725 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6726
6727 if (!(wiphy->features & flg)) {
6728 err = -EOPNOTSUPP;
6729 goto out_free;
6730 }
6731
6732 if (wdev && wdev->current_bss) {
6733 err = -EOPNOTSUPP;
6734 goto out_free;
6735 }
6736
6737 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6738 request->mac_addr_mask);
6739 if (err)
6740 goto out_free;
6741 }
6742 }
6743
6744 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6745 request->delay =
6746 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6747
6748 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6749 if (err)
6750 goto out_free;
6751
6752 request->scan_start = jiffies;
6753
6754 return request;
6755
6756 out_free:
6757 kfree(request);
6758 return ERR_PTR(err);
6759 }
6760
6761 static int nl80211_start_sched_scan(struct sk_buff *skb,
6762 struct genl_info *info)
6763 {
6764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6765 struct net_device *dev = info->user_ptr[1];
6766 struct wireless_dev *wdev = dev->ieee80211_ptr;
6767 struct cfg80211_sched_scan_request *sched_scan_req;
6768 int err;
6769
6770 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6771 !rdev->ops->sched_scan_start)
6772 return -EOPNOTSUPP;
6773
6774 if (rdev->sched_scan_req)
6775 return -EINPROGRESS;
6776
6777 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6778 info->attrs);
6779
6780 err = PTR_ERR_OR_ZERO(sched_scan_req);
6781 if (err)
6782 goto out_err;
6783
6784 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6785 if (err)
6786 goto out_free;
6787
6788 sched_scan_req->dev = dev;
6789 sched_scan_req->wiphy = &rdev->wiphy;
6790
6791 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6792 sched_scan_req->owner_nlportid = info->snd_portid;
6793
6794 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6795
6796 nl80211_send_sched_scan(rdev, dev,
6797 NL80211_CMD_START_SCHED_SCAN);
6798 return 0;
6799
6800 out_free:
6801 kfree(sched_scan_req);
6802 out_err:
6803 return err;
6804 }
6805
6806 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6807 struct genl_info *info)
6808 {
6809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6810
6811 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6812 !rdev->ops->sched_scan_stop)
6813 return -EOPNOTSUPP;
6814
6815 return __cfg80211_stop_sched_scan(rdev, false);
6816 }
6817
6818 static int nl80211_start_radar_detection(struct sk_buff *skb,
6819 struct genl_info *info)
6820 {
6821 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6822 struct net_device *dev = info->user_ptr[1];
6823 struct wireless_dev *wdev = dev->ieee80211_ptr;
6824 struct cfg80211_chan_def chandef;
6825 enum nl80211_dfs_regions dfs_region;
6826 unsigned int cac_time_ms;
6827 int err;
6828
6829 dfs_region = reg_get_dfs_region(wdev->wiphy);
6830 if (dfs_region == NL80211_DFS_UNSET)
6831 return -EINVAL;
6832
6833 err = nl80211_parse_chandef(rdev, info, &chandef);
6834 if (err)
6835 return err;
6836
6837 if (netif_carrier_ok(dev))
6838 return -EBUSY;
6839
6840 if (wdev->cac_started)
6841 return -EBUSY;
6842
6843 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6844 wdev->iftype);
6845 if (err < 0)
6846 return err;
6847
6848 if (err == 0)
6849 return -EINVAL;
6850
6851 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6852 return -EINVAL;
6853
6854 if (!rdev->ops->start_radar_detection)
6855 return -EOPNOTSUPP;
6856
6857 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6858 if (WARN_ON(!cac_time_ms))
6859 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6860
6861 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6862 if (!err) {
6863 wdev->chandef = chandef;
6864 wdev->cac_started = true;
6865 wdev->cac_start_time = jiffies;
6866 wdev->cac_time_ms = cac_time_ms;
6867 }
6868 return err;
6869 }
6870
6871 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6872 {
6873 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6874 struct net_device *dev = info->user_ptr[1];
6875 struct wireless_dev *wdev = dev->ieee80211_ptr;
6876 struct cfg80211_csa_settings params;
6877 /* csa_attrs is defined static to avoid waste of stack size - this
6878 * function is called under RTNL lock, so this should not be a problem.
6879 */
6880 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6881 int err;
6882 bool need_new_beacon = false;
6883 int len, i;
6884 u32 cs_count;
6885
6886 if (!rdev->ops->channel_switch ||
6887 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6888 return -EOPNOTSUPP;
6889
6890 switch (dev->ieee80211_ptr->iftype) {
6891 case NL80211_IFTYPE_AP:
6892 case NL80211_IFTYPE_P2P_GO:
6893 need_new_beacon = true;
6894
6895 /* useless if AP is not running */
6896 if (!wdev->beacon_interval)
6897 return -ENOTCONN;
6898 break;
6899 case NL80211_IFTYPE_ADHOC:
6900 if (!wdev->ssid_len)
6901 return -ENOTCONN;
6902 break;
6903 case NL80211_IFTYPE_MESH_POINT:
6904 if (!wdev->mesh_id_len)
6905 return -ENOTCONN;
6906 break;
6907 default:
6908 return -EOPNOTSUPP;
6909 }
6910
6911 memset(&params, 0, sizeof(params));
6912
6913 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6914 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6915 return -EINVAL;
6916
6917 /* only important for AP, IBSS and mesh create IEs internally */
6918 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6919 return -EINVAL;
6920
6921 /* Even though the attribute is u32, the specification says
6922 * u8, so let's make sure we don't overflow.
6923 */
6924 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6925 if (cs_count > 255)
6926 return -EINVAL;
6927
6928 params.count = cs_count;
6929
6930 if (!need_new_beacon)
6931 goto skip_beacons;
6932
6933 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6934 if (err)
6935 return err;
6936
6937 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6938 info->attrs[NL80211_ATTR_CSA_IES],
6939 nl80211_policy);
6940 if (err)
6941 return err;
6942
6943 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6944 if (err)
6945 return err;
6946
6947 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6948 return -EINVAL;
6949
6950 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6951 if (!len || (len % sizeof(u16)))
6952 return -EINVAL;
6953
6954 params.n_counter_offsets_beacon = len / sizeof(u16);
6955 if (rdev->wiphy.max_num_csa_counters &&
6956 (params.n_counter_offsets_beacon >
6957 rdev->wiphy.max_num_csa_counters))
6958 return -EINVAL;
6959
6960 params.counter_offsets_beacon =
6961 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6962
6963 /* sanity checks - counters should fit and be the same */
6964 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6965 u16 offset = params.counter_offsets_beacon[i];
6966
6967 if (offset >= params.beacon_csa.tail_len)
6968 return -EINVAL;
6969
6970 if (params.beacon_csa.tail[offset] != params.count)
6971 return -EINVAL;
6972 }
6973
6974 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6975 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6976 if (!len || (len % sizeof(u16)))
6977 return -EINVAL;
6978
6979 params.n_counter_offsets_presp = len / sizeof(u16);
6980 if (rdev->wiphy.max_num_csa_counters &&
6981 (params.n_counter_offsets_presp >
6982 rdev->wiphy.max_num_csa_counters))
6983 return -EINVAL;
6984
6985 params.counter_offsets_presp =
6986 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6987
6988 /* sanity checks - counters should fit and be the same */
6989 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6990 u16 offset = params.counter_offsets_presp[i];
6991
6992 if (offset >= params.beacon_csa.probe_resp_len)
6993 return -EINVAL;
6994
6995 if (params.beacon_csa.probe_resp[offset] !=
6996 params.count)
6997 return -EINVAL;
6998 }
6999 }
7000
7001 skip_beacons:
7002 err = nl80211_parse_chandef(rdev, info, &params.chandef);
7003 if (err)
7004 return err;
7005
7006 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
7007 wdev->iftype))
7008 return -EINVAL;
7009
7010 err = cfg80211_chandef_dfs_required(wdev->wiphy,
7011 &params.chandef,
7012 wdev->iftype);
7013 if (err < 0)
7014 return err;
7015
7016 if (err > 0)
7017 params.radar_required = true;
7018
7019 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
7020 params.block_tx = true;
7021
7022 wdev_lock(wdev);
7023 err = rdev_channel_switch(rdev, dev, &params);
7024 wdev_unlock(wdev);
7025
7026 return err;
7027 }
7028
7029 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
7030 u32 seq, int flags,
7031 struct cfg80211_registered_device *rdev,
7032 struct wireless_dev *wdev,
7033 struct cfg80211_internal_bss *intbss)
7034 {
7035 struct cfg80211_bss *res = &intbss->pub;
7036 const struct cfg80211_bss_ies *ies;
7037 void *hdr;
7038 struct nlattr *bss;
7039
7040 ASSERT_WDEV_LOCK(wdev);
7041
7042 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7043 NL80211_CMD_NEW_SCAN_RESULTS);
7044 if (!hdr)
7045 return -1;
7046
7047 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
7048
7049 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
7050 goto nla_put_failure;
7051 if (wdev->netdev &&
7052 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
7053 goto nla_put_failure;
7054 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
7055 NL80211_ATTR_PAD))
7056 goto nla_put_failure;
7057
7058 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
7059 if (!bss)
7060 goto nla_put_failure;
7061 if ((!is_zero_ether_addr(res->bssid) &&
7062 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
7063 goto nla_put_failure;
7064
7065 rcu_read_lock();
7066 /* indicate whether we have probe response data or not */
7067 if (rcu_access_pointer(res->proberesp_ies) &&
7068 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
7069 goto fail_unlock_rcu;
7070
7071 /* this pointer prefers to be pointed to probe response data
7072 * but is always valid
7073 */
7074 ies = rcu_dereference(res->ies);
7075 if (ies) {
7076 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
7077 NL80211_BSS_PAD))
7078 goto fail_unlock_rcu;
7079 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
7080 ies->len, ies->data))
7081 goto fail_unlock_rcu;
7082 }
7083
7084 /* and this pointer is always (unless driver didn't know) beacon data */
7085 ies = rcu_dereference(res->beacon_ies);
7086 if (ies && ies->from_beacon) {
7087 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
7088 NL80211_BSS_PAD))
7089 goto fail_unlock_rcu;
7090 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
7091 ies->len, ies->data))
7092 goto fail_unlock_rcu;
7093 }
7094 rcu_read_unlock();
7095
7096 if (res->beacon_interval &&
7097 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
7098 goto nla_put_failure;
7099 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
7100 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
7101 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
7102 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
7103 jiffies_to_msecs(jiffies - intbss->ts)))
7104 goto nla_put_failure;
7105
7106 if (intbss->parent_tsf &&
7107 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
7108 intbss->parent_tsf, NL80211_BSS_PAD) ||
7109 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
7110 intbss->parent_bssid)))
7111 goto nla_put_failure;
7112
7113 if (intbss->ts_boottime &&
7114 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
7115 intbss->ts_boottime, NL80211_BSS_PAD))
7116 goto nla_put_failure;
7117
7118 switch (rdev->wiphy.signal_type) {
7119 case CFG80211_SIGNAL_TYPE_MBM:
7120 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
7121 goto nla_put_failure;
7122 break;
7123 case CFG80211_SIGNAL_TYPE_UNSPEC:
7124 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
7125 goto nla_put_failure;
7126 break;
7127 default:
7128 break;
7129 }
7130
7131 switch (wdev->iftype) {
7132 case NL80211_IFTYPE_P2P_CLIENT:
7133 case NL80211_IFTYPE_STATION:
7134 if (intbss == wdev->current_bss &&
7135 nla_put_u32(msg, NL80211_BSS_STATUS,
7136 NL80211_BSS_STATUS_ASSOCIATED))
7137 goto nla_put_failure;
7138 break;
7139 case NL80211_IFTYPE_ADHOC:
7140 if (intbss == wdev->current_bss &&
7141 nla_put_u32(msg, NL80211_BSS_STATUS,
7142 NL80211_BSS_STATUS_IBSS_JOINED))
7143 goto nla_put_failure;
7144 break;
7145 default:
7146 break;
7147 }
7148
7149 nla_nest_end(msg, bss);
7150
7151 genlmsg_end(msg, hdr);
7152 return 0;
7153
7154 fail_unlock_rcu:
7155 rcu_read_unlock();
7156 nla_put_failure:
7157 genlmsg_cancel(msg, hdr);
7158 return -EMSGSIZE;
7159 }
7160
7161 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
7162 {
7163 struct cfg80211_registered_device *rdev;
7164 struct cfg80211_internal_bss *scan;
7165 struct wireless_dev *wdev;
7166 int start = cb->args[2], idx = 0;
7167 int err;
7168
7169 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7170 if (err)
7171 return err;
7172
7173 wdev_lock(wdev);
7174 spin_lock_bh(&rdev->bss_lock);
7175 cfg80211_bss_expire(rdev);
7176
7177 cb->seq = rdev->bss_generation;
7178
7179 list_for_each_entry(scan, &rdev->bss_list, list) {
7180 if (++idx <= start)
7181 continue;
7182 if (nl80211_send_bss(skb, cb,
7183 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7184 rdev, wdev, scan) < 0) {
7185 idx--;
7186 break;
7187 }
7188 }
7189
7190 spin_unlock_bh(&rdev->bss_lock);
7191 wdev_unlock(wdev);
7192
7193 cb->args[2] = idx;
7194 nl80211_finish_wdev_dump(rdev);
7195
7196 return skb->len;
7197 }
7198
7199 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
7200 int flags, struct net_device *dev,
7201 bool allow_radio_stats,
7202 struct survey_info *survey)
7203 {
7204 void *hdr;
7205 struct nlattr *infoattr;
7206
7207 /* skip radio stats if userspace didn't request them */
7208 if (!survey->channel && !allow_radio_stats)
7209 return 0;
7210
7211 hdr = nl80211hdr_put(msg, portid, seq, flags,
7212 NL80211_CMD_NEW_SURVEY_RESULTS);
7213 if (!hdr)
7214 return -ENOMEM;
7215
7216 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
7217 goto nla_put_failure;
7218
7219 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
7220 if (!infoattr)
7221 goto nla_put_failure;
7222
7223 if (survey->channel &&
7224 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
7225 survey->channel->center_freq))
7226 goto nla_put_failure;
7227
7228 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
7229 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
7230 goto nla_put_failure;
7231 if ((survey->filled & SURVEY_INFO_IN_USE) &&
7232 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
7233 goto nla_put_failure;
7234 if ((survey->filled & SURVEY_INFO_TIME) &&
7235 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
7236 survey->time, NL80211_SURVEY_INFO_PAD))
7237 goto nla_put_failure;
7238 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
7239 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
7240 survey->time_busy, NL80211_SURVEY_INFO_PAD))
7241 goto nla_put_failure;
7242 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
7243 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
7244 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
7245 goto nla_put_failure;
7246 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
7247 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
7248 survey->time_rx, NL80211_SURVEY_INFO_PAD))
7249 goto nla_put_failure;
7250 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
7251 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
7252 survey->time_tx, NL80211_SURVEY_INFO_PAD))
7253 goto nla_put_failure;
7254 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
7255 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
7256 survey->time_scan, NL80211_SURVEY_INFO_PAD))
7257 goto nla_put_failure;
7258
7259 nla_nest_end(msg, infoattr);
7260
7261 genlmsg_end(msg, hdr);
7262 return 0;
7263
7264 nla_put_failure:
7265 genlmsg_cancel(msg, hdr);
7266 return -EMSGSIZE;
7267 }
7268
7269 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
7270 {
7271 struct survey_info survey;
7272 struct cfg80211_registered_device *rdev;
7273 struct wireless_dev *wdev;
7274 int survey_idx = cb->args[2];
7275 int res;
7276 bool radio_stats;
7277
7278 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
7279 if (res)
7280 return res;
7281
7282 /* prepare_wdev_dump parsed the attributes */
7283 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
7284
7285 if (!wdev->netdev) {
7286 res = -EINVAL;
7287 goto out_err;
7288 }
7289
7290 if (!rdev->ops->dump_survey) {
7291 res = -EOPNOTSUPP;
7292 goto out_err;
7293 }
7294
7295 while (1) {
7296 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
7297 if (res == -ENOENT)
7298 break;
7299 if (res)
7300 goto out_err;
7301
7302 /* don't send disabled channels, but do send non-channel data */
7303 if (survey.channel &&
7304 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
7305 survey_idx++;
7306 continue;
7307 }
7308
7309 if (nl80211_send_survey(skb,
7310 NETLINK_CB(cb->skb).portid,
7311 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7312 wdev->netdev, radio_stats, &survey) < 0)
7313 goto out;
7314 survey_idx++;
7315 }
7316
7317 out:
7318 cb->args[2] = survey_idx;
7319 res = skb->len;
7320 out_err:
7321 nl80211_finish_wdev_dump(rdev);
7322 return res;
7323 }
7324
7325 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
7326 {
7327 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7328 NL80211_WPA_VERSION_2));
7329 }
7330
7331 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7332 {
7333 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7334 struct net_device *dev = info->user_ptr[1];
7335 struct ieee80211_channel *chan;
7336 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7337 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7338 enum nl80211_auth_type auth_type;
7339 struct key_parse key;
7340 bool local_state_change;
7341
7342 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7343 return -EINVAL;
7344
7345 if (!info->attrs[NL80211_ATTR_MAC])
7346 return -EINVAL;
7347
7348 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7349 return -EINVAL;
7350
7351 if (!info->attrs[NL80211_ATTR_SSID])
7352 return -EINVAL;
7353
7354 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7355 return -EINVAL;
7356
7357 err = nl80211_parse_key(info, &key);
7358 if (err)
7359 return err;
7360
7361 if (key.idx >= 0) {
7362 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7363 return -EINVAL;
7364 if (!key.p.key || !key.p.key_len)
7365 return -EINVAL;
7366 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7367 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7368 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7369 key.p.key_len != WLAN_KEY_LEN_WEP104))
7370 return -EINVAL;
7371 if (key.idx > 4)
7372 return -EINVAL;
7373 } else {
7374 key.p.key_len = 0;
7375 key.p.key = NULL;
7376 }
7377
7378 if (key.idx >= 0) {
7379 int i;
7380 bool ok = false;
7381
7382 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7383 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7384 ok = true;
7385 break;
7386 }
7387 }
7388 if (!ok)
7389 return -EINVAL;
7390 }
7391
7392 if (!rdev->ops->auth)
7393 return -EOPNOTSUPP;
7394
7395 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7396 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7397 return -EOPNOTSUPP;
7398
7399 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7400 chan = nl80211_get_valid_chan(&rdev->wiphy,
7401 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7402 if (!chan)
7403 return -EINVAL;
7404
7405 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7406 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7407
7408 if (info->attrs[NL80211_ATTR_IE]) {
7409 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7410 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7411 }
7412
7413 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7414 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7415 return -EINVAL;
7416
7417 if (auth_type == NL80211_AUTHTYPE_SAE &&
7418 !info->attrs[NL80211_ATTR_SAE_DATA])
7419 return -EINVAL;
7420
7421 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7422 if (auth_type != NL80211_AUTHTYPE_SAE)
7423 return -EINVAL;
7424 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7425 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7426 /* need to include at least Auth Transaction and Status Code */
7427 if (sae_data_len < 4)
7428 return -EINVAL;
7429 }
7430
7431 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7432
7433 /*
7434 * Since we no longer track auth state, ignore
7435 * requests to only change local state.
7436 */
7437 if (local_state_change)
7438 return 0;
7439
7440 wdev_lock(dev->ieee80211_ptr);
7441 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7442 ssid, ssid_len, ie, ie_len,
7443 key.p.key, key.p.key_len, key.idx,
7444 sae_data, sae_data_len);
7445 wdev_unlock(dev->ieee80211_ptr);
7446 return err;
7447 }
7448
7449 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7450 struct genl_info *info,
7451 struct cfg80211_crypto_settings *settings,
7452 int cipher_limit)
7453 {
7454 memset(settings, 0, sizeof(*settings));
7455
7456 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7457
7458 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7459 u16 proto;
7460
7461 proto = nla_get_u16(
7462 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7463 settings->control_port_ethertype = cpu_to_be16(proto);
7464 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7465 proto != ETH_P_PAE)
7466 return -EINVAL;
7467 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7468 settings->control_port_no_encrypt = true;
7469 } else
7470 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7471
7472 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7473 void *data;
7474 int len, i;
7475
7476 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7477 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7478 settings->n_ciphers_pairwise = len / sizeof(u32);
7479
7480 if (len % sizeof(u32))
7481 return -EINVAL;
7482
7483 if (settings->n_ciphers_pairwise > cipher_limit)
7484 return -EINVAL;
7485
7486 memcpy(settings->ciphers_pairwise, data, len);
7487
7488 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7489 if (!cfg80211_supported_cipher_suite(
7490 &rdev->wiphy,
7491 settings->ciphers_pairwise[i]))
7492 return -EINVAL;
7493 }
7494
7495 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7496 settings->cipher_group =
7497 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7498 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7499 settings->cipher_group))
7500 return -EINVAL;
7501 }
7502
7503 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7504 settings->wpa_versions =
7505 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7506 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7507 return -EINVAL;
7508 }
7509
7510 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7511 void *data;
7512 int len;
7513
7514 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7515 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7516 settings->n_akm_suites = len / sizeof(u32);
7517
7518 if (len % sizeof(u32))
7519 return -EINVAL;
7520
7521 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7522 return -EINVAL;
7523
7524 memcpy(settings->akm_suites, data, len);
7525 }
7526
7527 return 0;
7528 }
7529
7530 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7531 {
7532 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7533 struct net_device *dev = info->user_ptr[1];
7534 struct ieee80211_channel *chan;
7535 struct cfg80211_assoc_request req = {};
7536 const u8 *bssid, *ssid;
7537 int err, ssid_len = 0;
7538
7539 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7540 return -EINVAL;
7541
7542 if (!info->attrs[NL80211_ATTR_MAC] ||
7543 !info->attrs[NL80211_ATTR_SSID] ||
7544 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7545 return -EINVAL;
7546
7547 if (!rdev->ops->assoc)
7548 return -EOPNOTSUPP;
7549
7550 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7551 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7552 return -EOPNOTSUPP;
7553
7554 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7555
7556 chan = nl80211_get_valid_chan(&rdev->wiphy,
7557 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7558 if (!chan)
7559 return -EINVAL;
7560
7561 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7562 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7563
7564 if (info->attrs[NL80211_ATTR_IE]) {
7565 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7566 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7567 }
7568
7569 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7570 enum nl80211_mfp mfp =
7571 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7572 if (mfp == NL80211_MFP_REQUIRED)
7573 req.use_mfp = true;
7574 else if (mfp != NL80211_MFP_NO)
7575 return -EINVAL;
7576 }
7577
7578 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7579 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7580
7581 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7582 req.flags |= ASSOC_REQ_DISABLE_HT;
7583
7584 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7585 memcpy(&req.ht_capa_mask,
7586 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7587 sizeof(req.ht_capa_mask));
7588
7589 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7590 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7591 return -EINVAL;
7592 memcpy(&req.ht_capa,
7593 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7594 sizeof(req.ht_capa));
7595 }
7596
7597 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7598 req.flags |= ASSOC_REQ_DISABLE_VHT;
7599
7600 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7601 memcpy(&req.vht_capa_mask,
7602 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7603 sizeof(req.vht_capa_mask));
7604
7605 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7606 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7607 return -EINVAL;
7608 memcpy(&req.vht_capa,
7609 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7610 sizeof(req.vht_capa));
7611 }
7612
7613 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7614 if (!((rdev->wiphy.features &
7615 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
7616 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
7617 !wiphy_ext_feature_isset(&rdev->wiphy,
7618 NL80211_EXT_FEATURE_RRM))
7619 return -EINVAL;
7620 req.flags |= ASSOC_REQ_USE_RRM;
7621 }
7622
7623 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7624 if (!err) {
7625 wdev_lock(dev->ieee80211_ptr);
7626 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7627 ssid, ssid_len, &req);
7628 wdev_unlock(dev->ieee80211_ptr);
7629 }
7630
7631 return err;
7632 }
7633
7634 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7635 {
7636 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7637 struct net_device *dev = info->user_ptr[1];
7638 const u8 *ie = NULL, *bssid;
7639 int ie_len = 0, err;
7640 u16 reason_code;
7641 bool local_state_change;
7642
7643 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7644 return -EINVAL;
7645
7646 if (!info->attrs[NL80211_ATTR_MAC])
7647 return -EINVAL;
7648
7649 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7650 return -EINVAL;
7651
7652 if (!rdev->ops->deauth)
7653 return -EOPNOTSUPP;
7654
7655 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7656 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7657 return -EOPNOTSUPP;
7658
7659 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7660
7661 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7662 if (reason_code == 0) {
7663 /* Reason Code 0 is reserved */
7664 return -EINVAL;
7665 }
7666
7667 if (info->attrs[NL80211_ATTR_IE]) {
7668 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7669 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7670 }
7671
7672 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7673
7674 wdev_lock(dev->ieee80211_ptr);
7675 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7676 local_state_change);
7677 wdev_unlock(dev->ieee80211_ptr);
7678 return err;
7679 }
7680
7681 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7682 {
7683 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7684 struct net_device *dev = info->user_ptr[1];
7685 const u8 *ie = NULL, *bssid;
7686 int ie_len = 0, err;
7687 u16 reason_code;
7688 bool local_state_change;
7689
7690 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7691 return -EINVAL;
7692
7693 if (!info->attrs[NL80211_ATTR_MAC])
7694 return -EINVAL;
7695
7696 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7697 return -EINVAL;
7698
7699 if (!rdev->ops->disassoc)
7700 return -EOPNOTSUPP;
7701
7702 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7703 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7704 return -EOPNOTSUPP;
7705
7706 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7707
7708 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7709 if (reason_code == 0) {
7710 /* Reason Code 0 is reserved */
7711 return -EINVAL;
7712 }
7713
7714 if (info->attrs[NL80211_ATTR_IE]) {
7715 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7716 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7717 }
7718
7719 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7720
7721 wdev_lock(dev->ieee80211_ptr);
7722 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7723 local_state_change);
7724 wdev_unlock(dev->ieee80211_ptr);
7725 return err;
7726 }
7727
7728 static bool
7729 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7730 int mcast_rate[NUM_NL80211_BANDS],
7731 int rateval)
7732 {
7733 struct wiphy *wiphy = &rdev->wiphy;
7734 bool found = false;
7735 int band, i;
7736
7737 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7738 struct ieee80211_supported_band *sband;
7739
7740 sband = wiphy->bands[band];
7741 if (!sband)
7742 continue;
7743
7744 for (i = 0; i < sband->n_bitrates; i++) {
7745 if (sband->bitrates[i].bitrate == rateval) {
7746 mcast_rate[band] = i + 1;
7747 found = true;
7748 break;
7749 }
7750 }
7751 }
7752
7753 return found;
7754 }
7755
7756 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7757 {
7758 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7759 struct net_device *dev = info->user_ptr[1];
7760 struct cfg80211_ibss_params ibss;
7761 struct wiphy *wiphy;
7762 struct cfg80211_cached_keys *connkeys = NULL;
7763 int err;
7764
7765 memset(&ibss, 0, sizeof(ibss));
7766
7767 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7768 return -EINVAL;
7769
7770 if (!info->attrs[NL80211_ATTR_SSID] ||
7771 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7772 return -EINVAL;
7773
7774 ibss.beacon_interval = 100;
7775
7776 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7777 ibss.beacon_interval =
7778 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7779 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7780 return -EINVAL;
7781 }
7782
7783 if (!rdev->ops->join_ibss)
7784 return -EOPNOTSUPP;
7785
7786 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7787 return -EOPNOTSUPP;
7788
7789 wiphy = &rdev->wiphy;
7790
7791 if (info->attrs[NL80211_ATTR_MAC]) {
7792 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7793
7794 if (!is_valid_ether_addr(ibss.bssid))
7795 return -EINVAL;
7796 }
7797 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7798 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7799
7800 if (info->attrs[NL80211_ATTR_IE]) {
7801 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7802 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7803 }
7804
7805 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7806 if (err)
7807 return err;
7808
7809 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7810 NL80211_IFTYPE_ADHOC))
7811 return -EINVAL;
7812
7813 switch (ibss.chandef.width) {
7814 case NL80211_CHAN_WIDTH_5:
7815 case NL80211_CHAN_WIDTH_10:
7816 case NL80211_CHAN_WIDTH_20_NOHT:
7817 break;
7818 case NL80211_CHAN_WIDTH_20:
7819 case NL80211_CHAN_WIDTH_40:
7820 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7821 return -EINVAL;
7822 break;
7823 case NL80211_CHAN_WIDTH_80:
7824 case NL80211_CHAN_WIDTH_80P80:
7825 case NL80211_CHAN_WIDTH_160:
7826 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7827 return -EINVAL;
7828 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7829 NL80211_EXT_FEATURE_VHT_IBSS))
7830 return -EINVAL;
7831 break;
7832 default:
7833 return -EINVAL;
7834 }
7835
7836 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7837 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7838
7839 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7840 u8 *rates =
7841 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7842 int n_rates =
7843 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7844 struct ieee80211_supported_band *sband =
7845 wiphy->bands[ibss.chandef.chan->band];
7846
7847 err = ieee80211_get_ratemask(sband, rates, n_rates,
7848 &ibss.basic_rates);
7849 if (err)
7850 return err;
7851 }
7852
7853 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7854 memcpy(&ibss.ht_capa_mask,
7855 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7856 sizeof(ibss.ht_capa_mask));
7857
7858 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7859 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7860 return -EINVAL;
7861 memcpy(&ibss.ht_capa,
7862 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7863 sizeof(ibss.ht_capa));
7864 }
7865
7866 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7867 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7868 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7869 return -EINVAL;
7870
7871 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7872 bool no_ht = false;
7873
7874 connkeys = nl80211_parse_connkeys(rdev,
7875 info->attrs[NL80211_ATTR_KEYS],
7876 &no_ht);
7877 if (IS_ERR(connkeys))
7878 return PTR_ERR(connkeys);
7879
7880 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7881 no_ht) {
7882 kzfree(connkeys);
7883 return -EINVAL;
7884 }
7885 }
7886
7887 ibss.control_port =
7888 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7889
7890 ibss.userspace_handles_dfs =
7891 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7892
7893 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7894 if (err)
7895 kzfree(connkeys);
7896 return err;
7897 }
7898
7899 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7900 {
7901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7902 struct net_device *dev = info->user_ptr[1];
7903
7904 if (!rdev->ops->leave_ibss)
7905 return -EOPNOTSUPP;
7906
7907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7908 return -EOPNOTSUPP;
7909
7910 return cfg80211_leave_ibss(rdev, dev, false);
7911 }
7912
7913 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7914 {
7915 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7916 struct net_device *dev = info->user_ptr[1];
7917 int mcast_rate[NUM_NL80211_BANDS];
7918 u32 nla_rate;
7919 int err;
7920
7921 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7922 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7923 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7924 return -EOPNOTSUPP;
7925
7926 if (!rdev->ops->set_mcast_rate)
7927 return -EOPNOTSUPP;
7928
7929 memset(mcast_rate, 0, sizeof(mcast_rate));
7930
7931 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7932 return -EINVAL;
7933
7934 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7935 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7936 return -EINVAL;
7937
7938 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7939
7940 return err;
7941 }
7942
7943 static struct sk_buff *
7944 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7945 struct wireless_dev *wdev, int approxlen,
7946 u32 portid, u32 seq, enum nl80211_commands cmd,
7947 enum nl80211_attrs attr,
7948 const struct nl80211_vendor_cmd_info *info,
7949 gfp_t gfp)
7950 {
7951 struct sk_buff *skb;
7952 void *hdr;
7953 struct nlattr *data;
7954
7955 skb = nlmsg_new(approxlen + 100, gfp);
7956 if (!skb)
7957 return NULL;
7958
7959 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7960 if (!hdr) {
7961 kfree_skb(skb);
7962 return NULL;
7963 }
7964
7965 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7966 goto nla_put_failure;
7967
7968 if (info) {
7969 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7970 info->vendor_id))
7971 goto nla_put_failure;
7972 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7973 info->subcmd))
7974 goto nla_put_failure;
7975 }
7976
7977 if (wdev) {
7978 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
7979 wdev_id(wdev), NL80211_ATTR_PAD))
7980 goto nla_put_failure;
7981 if (wdev->netdev &&
7982 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7983 wdev->netdev->ifindex))
7984 goto nla_put_failure;
7985 }
7986
7987 data = nla_nest_start(skb, attr);
7988
7989 ((void **)skb->cb)[0] = rdev;
7990 ((void **)skb->cb)[1] = hdr;
7991 ((void **)skb->cb)[2] = data;
7992
7993 return skb;
7994
7995 nla_put_failure:
7996 kfree_skb(skb);
7997 return NULL;
7998 }
7999
8000 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
8001 struct wireless_dev *wdev,
8002 enum nl80211_commands cmd,
8003 enum nl80211_attrs attr,
8004 int vendor_event_idx,
8005 int approxlen, gfp_t gfp)
8006 {
8007 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
8008 const struct nl80211_vendor_cmd_info *info;
8009
8010 switch (cmd) {
8011 case NL80211_CMD_TESTMODE:
8012 if (WARN_ON(vendor_event_idx != -1))
8013 return NULL;
8014 info = NULL;
8015 break;
8016 case NL80211_CMD_VENDOR:
8017 if (WARN_ON(vendor_event_idx < 0 ||
8018 vendor_event_idx >= wiphy->n_vendor_events))
8019 return NULL;
8020 info = &wiphy->vendor_events[vendor_event_idx];
8021 break;
8022 default:
8023 WARN_ON(1);
8024 return NULL;
8025 }
8026
8027 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
8028 cmd, attr, info, gfp);
8029 }
8030 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
8031
8032 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
8033 {
8034 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
8035 void *hdr = ((void **)skb->cb)[1];
8036 struct nlattr *data = ((void **)skb->cb)[2];
8037 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
8038
8039 /* clear CB data for netlink core to own from now on */
8040 memset(skb->cb, 0, sizeof(skb->cb));
8041
8042 nla_nest_end(skb, data);
8043 genlmsg_end(skb, hdr);
8044
8045 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
8046 mcgrp = NL80211_MCGRP_VENDOR;
8047
8048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
8049 mcgrp, gfp);
8050 }
8051 EXPORT_SYMBOL(__cfg80211_send_event_skb);
8052
8053 #ifdef CONFIG_NL80211_TESTMODE
8054 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
8055 {
8056 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8057 struct wireless_dev *wdev =
8058 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8059 int err;
8060
8061 if (!rdev->ops->testmode_cmd)
8062 return -EOPNOTSUPP;
8063
8064 if (IS_ERR(wdev)) {
8065 err = PTR_ERR(wdev);
8066 if (err != -EINVAL)
8067 return err;
8068 wdev = NULL;
8069 } else if (wdev->wiphy != &rdev->wiphy) {
8070 return -EINVAL;
8071 }
8072
8073 if (!info->attrs[NL80211_ATTR_TESTDATA])
8074 return -EINVAL;
8075
8076 rdev->cur_cmd_info = info;
8077 err = rdev_testmode_cmd(rdev, wdev,
8078 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
8079 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
8080 rdev->cur_cmd_info = NULL;
8081
8082 return err;
8083 }
8084
8085 static int nl80211_testmode_dump(struct sk_buff *skb,
8086 struct netlink_callback *cb)
8087 {
8088 struct cfg80211_registered_device *rdev;
8089 int err;
8090 long phy_idx;
8091 void *data = NULL;
8092 int data_len = 0;
8093
8094 rtnl_lock();
8095
8096 if (cb->args[0]) {
8097 /*
8098 * 0 is a valid index, but not valid for args[0],
8099 * so we need to offset by 1.
8100 */
8101 phy_idx = cb->args[0] - 1;
8102 } else {
8103 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
8104 nl80211_fam.attrbuf, nl80211_fam.maxattr,
8105 nl80211_policy);
8106 if (err)
8107 goto out_err;
8108
8109 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
8110 nl80211_fam.attrbuf);
8111 if (IS_ERR(rdev)) {
8112 err = PTR_ERR(rdev);
8113 goto out_err;
8114 }
8115 phy_idx = rdev->wiphy_idx;
8116 rdev = NULL;
8117
8118 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
8119 cb->args[1] =
8120 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
8121 }
8122
8123 if (cb->args[1]) {
8124 data = nla_data((void *)cb->args[1]);
8125 data_len = nla_len((void *)cb->args[1]);
8126 }
8127
8128 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
8129 if (!rdev) {
8130 err = -ENOENT;
8131 goto out_err;
8132 }
8133
8134 if (!rdev->ops->testmode_dump) {
8135 err = -EOPNOTSUPP;
8136 goto out_err;
8137 }
8138
8139 while (1) {
8140 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
8141 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8142 NL80211_CMD_TESTMODE);
8143 struct nlattr *tmdata;
8144
8145 if (!hdr)
8146 break;
8147
8148 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
8149 genlmsg_cancel(skb, hdr);
8150 break;
8151 }
8152
8153 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
8154 if (!tmdata) {
8155 genlmsg_cancel(skb, hdr);
8156 break;
8157 }
8158 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
8159 nla_nest_end(skb, tmdata);
8160
8161 if (err == -ENOBUFS || err == -ENOENT) {
8162 genlmsg_cancel(skb, hdr);
8163 break;
8164 } else if (err) {
8165 genlmsg_cancel(skb, hdr);
8166 goto out_err;
8167 }
8168
8169 genlmsg_end(skb, hdr);
8170 }
8171
8172 err = skb->len;
8173 /* see above */
8174 cb->args[0] = phy_idx + 1;
8175 out_err:
8176 rtnl_unlock();
8177 return err;
8178 }
8179 #endif
8180
8181 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
8182 {
8183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8184 struct net_device *dev = info->user_ptr[1];
8185 struct cfg80211_connect_params connect;
8186 struct wiphy *wiphy;
8187 struct cfg80211_cached_keys *connkeys = NULL;
8188 int err;
8189
8190 memset(&connect, 0, sizeof(connect));
8191
8192 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8193 return -EINVAL;
8194
8195 if (!info->attrs[NL80211_ATTR_SSID] ||
8196 !nla_len(info->attrs[NL80211_ATTR_SSID]))
8197 return -EINVAL;
8198
8199 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
8200 connect.auth_type =
8201 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
8202 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
8203 NL80211_CMD_CONNECT))
8204 return -EINVAL;
8205 } else
8206 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
8207
8208 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
8209
8210 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
8211 NL80211_MAX_NR_CIPHER_SUITES);
8212 if (err)
8213 return err;
8214
8215 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8216 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8217 return -EOPNOTSUPP;
8218
8219 wiphy = &rdev->wiphy;
8220
8221 connect.bg_scan_period = -1;
8222 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
8223 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
8224 connect.bg_scan_period =
8225 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
8226 }
8227
8228 if (info->attrs[NL80211_ATTR_MAC])
8229 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8230 else if (info->attrs[NL80211_ATTR_MAC_HINT])
8231 connect.bssid_hint =
8232 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
8233 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
8234 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
8235
8236 if (info->attrs[NL80211_ATTR_IE]) {
8237 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8238 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8239 }
8240
8241 if (info->attrs[NL80211_ATTR_USE_MFP]) {
8242 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
8243 if (connect.mfp != NL80211_MFP_REQUIRED &&
8244 connect.mfp != NL80211_MFP_NO)
8245 return -EINVAL;
8246 } else {
8247 connect.mfp = NL80211_MFP_NO;
8248 }
8249
8250 if (info->attrs[NL80211_ATTR_PREV_BSSID])
8251 connect.prev_bssid =
8252 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
8253
8254 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8255 connect.channel = nl80211_get_valid_chan(
8256 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
8257 if (!connect.channel)
8258 return -EINVAL;
8259 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
8260 connect.channel_hint = nl80211_get_valid_chan(
8261 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
8262 if (!connect.channel_hint)
8263 return -EINVAL;
8264 }
8265
8266 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
8267 connkeys = nl80211_parse_connkeys(rdev,
8268 info->attrs[NL80211_ATTR_KEYS], NULL);
8269 if (IS_ERR(connkeys))
8270 return PTR_ERR(connkeys);
8271 }
8272
8273 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
8274 connect.flags |= ASSOC_REQ_DISABLE_HT;
8275
8276 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
8277 memcpy(&connect.ht_capa_mask,
8278 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
8279 sizeof(connect.ht_capa_mask));
8280
8281 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
8282 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
8283 kzfree(connkeys);
8284 return -EINVAL;
8285 }
8286 memcpy(&connect.ht_capa,
8287 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
8288 sizeof(connect.ht_capa));
8289 }
8290
8291 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
8292 connect.flags |= ASSOC_REQ_DISABLE_VHT;
8293
8294 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
8295 memcpy(&connect.vht_capa_mask,
8296 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
8297 sizeof(connect.vht_capa_mask));
8298
8299 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
8300 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
8301 kzfree(connkeys);
8302 return -EINVAL;
8303 }
8304 memcpy(&connect.vht_capa,
8305 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
8306 sizeof(connect.vht_capa));
8307 }
8308
8309 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
8310 if (!((rdev->wiphy.features &
8311 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
8312 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
8313 !wiphy_ext_feature_isset(&rdev->wiphy,
8314 NL80211_EXT_FEATURE_RRM)) {
8315 kzfree(connkeys);
8316 return -EINVAL;
8317 }
8318 connect.flags |= ASSOC_REQ_USE_RRM;
8319 }
8320
8321 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
8322 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
8323 kzfree(connkeys);
8324 return -EOPNOTSUPP;
8325 }
8326
8327 if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
8328 /* bss selection makes no sense if bssid is set */
8329 if (connect.bssid) {
8330 kzfree(connkeys);
8331 return -EINVAL;
8332 }
8333
8334 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
8335 wiphy, &connect.bss_select);
8336 if (err) {
8337 kzfree(connkeys);
8338 return err;
8339 }
8340 }
8341
8342 wdev_lock(dev->ieee80211_ptr);
8343 err = cfg80211_connect(rdev, dev, &connect, connkeys,
8344 connect.prev_bssid);
8345 wdev_unlock(dev->ieee80211_ptr);
8346 if (err)
8347 kzfree(connkeys);
8348 return err;
8349 }
8350
8351 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
8352 {
8353 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8354 struct net_device *dev = info->user_ptr[1];
8355 u16 reason;
8356 int ret;
8357
8358 if (!info->attrs[NL80211_ATTR_REASON_CODE])
8359 reason = WLAN_REASON_DEAUTH_LEAVING;
8360 else
8361 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8362
8363 if (reason == 0)
8364 return -EINVAL;
8365
8366 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8367 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8368 return -EOPNOTSUPP;
8369
8370 wdev_lock(dev->ieee80211_ptr);
8371 ret = cfg80211_disconnect(rdev, dev, reason, true);
8372 wdev_unlock(dev->ieee80211_ptr);
8373 return ret;
8374 }
8375
8376 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8377 {
8378 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8379 struct net *net;
8380 int err;
8381
8382 if (info->attrs[NL80211_ATTR_PID]) {
8383 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8384
8385 net = get_net_ns_by_pid(pid);
8386 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8387 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8388
8389 net = get_net_ns_by_fd(fd);
8390 } else {
8391 return -EINVAL;
8392 }
8393
8394 if (IS_ERR(net))
8395 return PTR_ERR(net);
8396
8397 err = 0;
8398
8399 /* check if anything to do */
8400 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8401 err = cfg80211_switch_netns(rdev, net);
8402
8403 put_net(net);
8404 return err;
8405 }
8406
8407 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8408 {
8409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8410 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8411 struct cfg80211_pmksa *pmksa) = NULL;
8412 struct net_device *dev = info->user_ptr[1];
8413 struct cfg80211_pmksa pmksa;
8414
8415 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8416
8417 if (!info->attrs[NL80211_ATTR_MAC])
8418 return -EINVAL;
8419
8420 if (!info->attrs[NL80211_ATTR_PMKID])
8421 return -EINVAL;
8422
8423 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8424 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8425
8426 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8427 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8428 return -EOPNOTSUPP;
8429
8430 switch (info->genlhdr->cmd) {
8431 case NL80211_CMD_SET_PMKSA:
8432 rdev_ops = rdev->ops->set_pmksa;
8433 break;
8434 case NL80211_CMD_DEL_PMKSA:
8435 rdev_ops = rdev->ops->del_pmksa;
8436 break;
8437 default:
8438 WARN_ON(1);
8439 break;
8440 }
8441
8442 if (!rdev_ops)
8443 return -EOPNOTSUPP;
8444
8445 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8446 }
8447
8448 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8449 {
8450 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8451 struct net_device *dev = info->user_ptr[1];
8452
8453 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8454 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8455 return -EOPNOTSUPP;
8456
8457 if (!rdev->ops->flush_pmksa)
8458 return -EOPNOTSUPP;
8459
8460 return rdev_flush_pmksa(rdev, dev);
8461 }
8462
8463 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8464 {
8465 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8466 struct net_device *dev = info->user_ptr[1];
8467 u8 action_code, dialog_token;
8468 u32 peer_capability = 0;
8469 u16 status_code;
8470 u8 *peer;
8471 bool initiator;
8472
8473 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8474 !rdev->ops->tdls_mgmt)
8475 return -EOPNOTSUPP;
8476
8477 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8478 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8479 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8480 !info->attrs[NL80211_ATTR_IE] ||
8481 !info->attrs[NL80211_ATTR_MAC])
8482 return -EINVAL;
8483
8484 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8485 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8486 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8487 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8488 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8489 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8490 peer_capability =
8491 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8492
8493 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8494 dialog_token, status_code, peer_capability,
8495 initiator,
8496 nla_data(info->attrs[NL80211_ATTR_IE]),
8497 nla_len(info->attrs[NL80211_ATTR_IE]));
8498 }
8499
8500 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8501 {
8502 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8503 struct net_device *dev = info->user_ptr[1];
8504 enum nl80211_tdls_operation operation;
8505 u8 *peer;
8506
8507 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8508 !rdev->ops->tdls_oper)
8509 return -EOPNOTSUPP;
8510
8511 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8512 !info->attrs[NL80211_ATTR_MAC])
8513 return -EINVAL;
8514
8515 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8516 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8517
8518 return rdev_tdls_oper(rdev, dev, peer, operation);
8519 }
8520
8521 static int nl80211_remain_on_channel(struct sk_buff *skb,
8522 struct genl_info *info)
8523 {
8524 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8525 struct wireless_dev *wdev = info->user_ptr[1];
8526 struct cfg80211_chan_def chandef;
8527 struct sk_buff *msg;
8528 void *hdr;
8529 u64 cookie;
8530 u32 duration;
8531 int err;
8532
8533 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8534 !info->attrs[NL80211_ATTR_DURATION])
8535 return -EINVAL;
8536
8537 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8538
8539 if (!rdev->ops->remain_on_channel ||
8540 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8541 return -EOPNOTSUPP;
8542
8543 /*
8544 * We should be on that channel for at least a minimum amount of
8545 * time (10ms) but no longer than the driver supports.
8546 */
8547 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8548 duration > rdev->wiphy.max_remain_on_channel_duration)
8549 return -EINVAL;
8550
8551 err = nl80211_parse_chandef(rdev, info, &chandef);
8552 if (err)
8553 return err;
8554
8555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8556 if (!msg)
8557 return -ENOMEM;
8558
8559 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8560 NL80211_CMD_REMAIN_ON_CHANNEL);
8561 if (!hdr) {
8562 err = -ENOBUFS;
8563 goto free_msg;
8564 }
8565
8566 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8567 duration, &cookie);
8568
8569 if (err)
8570 goto free_msg;
8571
8572 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8573 NL80211_ATTR_PAD))
8574 goto nla_put_failure;
8575
8576 genlmsg_end(msg, hdr);
8577
8578 return genlmsg_reply(msg, info);
8579
8580 nla_put_failure:
8581 err = -ENOBUFS;
8582 free_msg:
8583 nlmsg_free(msg);
8584 return err;
8585 }
8586
8587 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8588 struct genl_info *info)
8589 {
8590 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8591 struct wireless_dev *wdev = info->user_ptr[1];
8592 u64 cookie;
8593
8594 if (!info->attrs[NL80211_ATTR_COOKIE])
8595 return -EINVAL;
8596
8597 if (!rdev->ops->cancel_remain_on_channel)
8598 return -EOPNOTSUPP;
8599
8600 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8601
8602 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8603 }
8604
8605 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8606 u8 *rates, u8 rates_len)
8607 {
8608 u8 i;
8609 u32 mask = 0;
8610
8611 for (i = 0; i < rates_len; i++) {
8612 int rate = (rates[i] & 0x7f) * 5;
8613 int ridx;
8614
8615 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8616 struct ieee80211_rate *srate =
8617 &sband->bitrates[ridx];
8618 if (rate == srate->bitrate) {
8619 mask |= 1 << ridx;
8620 break;
8621 }
8622 }
8623 if (ridx == sband->n_bitrates)
8624 return 0; /* rate not found */
8625 }
8626
8627 return mask;
8628 }
8629
8630 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8631 u8 *rates, u8 rates_len,
8632 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8633 {
8634 u8 i;
8635
8636 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8637
8638 for (i = 0; i < rates_len; i++) {
8639 int ridx, rbit;
8640
8641 ridx = rates[i] / 8;
8642 rbit = BIT(rates[i] % 8);
8643
8644 /* check validity */
8645 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8646 return false;
8647
8648 /* check availability */
8649 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8650 mcs[ridx] |= rbit;
8651 else
8652 return false;
8653 }
8654
8655 return true;
8656 }
8657
8658 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8659 {
8660 u16 mcs_mask = 0;
8661
8662 switch (vht_mcs_map) {
8663 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8664 break;
8665 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8666 mcs_mask = 0x00FF;
8667 break;
8668 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8669 mcs_mask = 0x01FF;
8670 break;
8671 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8672 mcs_mask = 0x03FF;
8673 break;
8674 default:
8675 break;
8676 }
8677
8678 return mcs_mask;
8679 }
8680
8681 static void vht_build_mcs_mask(u16 vht_mcs_map,
8682 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8683 {
8684 u8 nss;
8685
8686 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8687 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8688 vht_mcs_map >>= 2;
8689 }
8690 }
8691
8692 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8693 struct nl80211_txrate_vht *txrate,
8694 u16 mcs[NL80211_VHT_NSS_MAX])
8695 {
8696 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8697 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8698 u8 i;
8699
8700 if (!sband->vht_cap.vht_supported)
8701 return false;
8702
8703 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8704
8705 /* Build vht_mcs_mask from VHT capabilities */
8706 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8707
8708 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8709 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8710 mcs[i] = txrate->mcs[i];
8711 else
8712 return false;
8713 }
8714
8715 return true;
8716 }
8717
8718 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8719 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8720 .len = NL80211_MAX_SUPP_RATES },
8721 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8722 .len = NL80211_MAX_SUPP_HT_RATES },
8723 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8724 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8725 };
8726
8727 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8728 struct genl_info *info)
8729 {
8730 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8731 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8732 struct cfg80211_bitrate_mask mask;
8733 int rem, i;
8734 struct net_device *dev = info->user_ptr[1];
8735 struct nlattr *tx_rates;
8736 struct ieee80211_supported_band *sband;
8737 u16 vht_tx_mcs_map;
8738
8739 if (!rdev->ops->set_bitrate_mask)
8740 return -EOPNOTSUPP;
8741
8742 memset(&mask, 0, sizeof(mask));
8743 /* Default to all rates enabled */
8744 for (i = 0; i < NUM_NL80211_BANDS; i++) {
8745 sband = rdev->wiphy.bands[i];
8746
8747 if (!sband)
8748 continue;
8749
8750 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8751 memcpy(mask.control[i].ht_mcs,
8752 sband->ht_cap.mcs.rx_mask,
8753 sizeof(mask.control[i].ht_mcs));
8754
8755 if (!sband->vht_cap.vht_supported)
8756 continue;
8757
8758 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8759 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8760 }
8761
8762 /* if no rates are given set it back to the defaults */
8763 if (!info->attrs[NL80211_ATTR_TX_RATES])
8764 goto out;
8765
8766 /*
8767 * The nested attribute uses enum nl80211_band as the index. This maps
8768 * directly to the enum nl80211_band values used in cfg80211.
8769 */
8770 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8771 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8772 enum nl80211_band band = nla_type(tx_rates);
8773 int err;
8774
8775 if (band < 0 || band >= NUM_NL80211_BANDS)
8776 return -EINVAL;
8777 sband = rdev->wiphy.bands[band];
8778 if (sband == NULL)
8779 return -EINVAL;
8780 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8781 nla_len(tx_rates), nl80211_txattr_policy);
8782 if (err)
8783 return err;
8784 if (tb[NL80211_TXRATE_LEGACY]) {
8785 mask.control[band].legacy = rateset_to_mask(
8786 sband,
8787 nla_data(tb[NL80211_TXRATE_LEGACY]),
8788 nla_len(tb[NL80211_TXRATE_LEGACY]));
8789 if ((mask.control[band].legacy == 0) &&
8790 nla_len(tb[NL80211_TXRATE_LEGACY]))
8791 return -EINVAL;
8792 }
8793 if (tb[NL80211_TXRATE_HT]) {
8794 if (!ht_rateset_to_mask(
8795 sband,
8796 nla_data(tb[NL80211_TXRATE_HT]),
8797 nla_len(tb[NL80211_TXRATE_HT]),
8798 mask.control[band].ht_mcs))
8799 return -EINVAL;
8800 }
8801 if (tb[NL80211_TXRATE_VHT]) {
8802 if (!vht_set_mcs_mask(
8803 sband,
8804 nla_data(tb[NL80211_TXRATE_VHT]),
8805 mask.control[band].vht_mcs))
8806 return -EINVAL;
8807 }
8808 if (tb[NL80211_TXRATE_GI]) {
8809 mask.control[band].gi =
8810 nla_get_u8(tb[NL80211_TXRATE_GI]);
8811 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8812 return -EINVAL;
8813 }
8814
8815 if (mask.control[band].legacy == 0) {
8816 /* don't allow empty legacy rates if HT or VHT
8817 * are not even supported.
8818 */
8819 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8820 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8821 return -EINVAL;
8822
8823 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8824 if (mask.control[band].ht_mcs[i])
8825 goto out;
8826
8827 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8828 if (mask.control[band].vht_mcs[i])
8829 goto out;
8830
8831 /* legacy and mcs rates may not be both empty */
8832 return -EINVAL;
8833 }
8834 }
8835
8836 out:
8837 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8838 }
8839
8840 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8841 {
8842 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8843 struct wireless_dev *wdev = info->user_ptr[1];
8844 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8845
8846 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8847 return -EINVAL;
8848
8849 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8850 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8851
8852 switch (wdev->iftype) {
8853 case NL80211_IFTYPE_STATION:
8854 case NL80211_IFTYPE_ADHOC:
8855 case NL80211_IFTYPE_P2P_CLIENT:
8856 case NL80211_IFTYPE_AP:
8857 case NL80211_IFTYPE_AP_VLAN:
8858 case NL80211_IFTYPE_MESH_POINT:
8859 case NL80211_IFTYPE_P2P_GO:
8860 case NL80211_IFTYPE_P2P_DEVICE:
8861 break;
8862 default:
8863 return -EOPNOTSUPP;
8864 }
8865
8866 /* not much point in registering if we can't reply */
8867 if (!rdev->ops->mgmt_tx)
8868 return -EOPNOTSUPP;
8869
8870 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8871 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8872 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8873 }
8874
8875 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8876 {
8877 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8878 struct wireless_dev *wdev = info->user_ptr[1];
8879 struct cfg80211_chan_def chandef;
8880 int err;
8881 void *hdr = NULL;
8882 u64 cookie;
8883 struct sk_buff *msg = NULL;
8884 struct cfg80211_mgmt_tx_params params = {
8885 .dont_wait_for_ack =
8886 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8887 };
8888
8889 if (!info->attrs[NL80211_ATTR_FRAME])
8890 return -EINVAL;
8891
8892 if (!rdev->ops->mgmt_tx)
8893 return -EOPNOTSUPP;
8894
8895 switch (wdev->iftype) {
8896 case NL80211_IFTYPE_P2P_DEVICE:
8897 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8898 return -EINVAL;
8899 case NL80211_IFTYPE_STATION:
8900 case NL80211_IFTYPE_ADHOC:
8901 case NL80211_IFTYPE_P2P_CLIENT:
8902 case NL80211_IFTYPE_AP:
8903 case NL80211_IFTYPE_AP_VLAN:
8904 case NL80211_IFTYPE_MESH_POINT:
8905 case NL80211_IFTYPE_P2P_GO:
8906 break;
8907 default:
8908 return -EOPNOTSUPP;
8909 }
8910
8911 if (info->attrs[NL80211_ATTR_DURATION]) {
8912 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8913 return -EINVAL;
8914 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8915
8916 /*
8917 * We should wait on the channel for at least a minimum amount
8918 * of time (10ms) but no longer than the driver supports.
8919 */
8920 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8921 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8922 return -EINVAL;
8923 }
8924
8925 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8926
8927 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8928 return -EINVAL;
8929
8930 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8931
8932 /* get the channel if any has been specified, otherwise pass NULL to
8933 * the driver. The latter will use the current one
8934 */
8935 chandef.chan = NULL;
8936 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8937 err = nl80211_parse_chandef(rdev, info, &chandef);
8938 if (err)
8939 return err;
8940 }
8941
8942 if (!chandef.chan && params.offchan)
8943 return -EINVAL;
8944
8945 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8946 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8947
8948 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8949 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8950 int i;
8951
8952 if (len % sizeof(u16))
8953 return -EINVAL;
8954
8955 params.n_csa_offsets = len / sizeof(u16);
8956 params.csa_offsets =
8957 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8958
8959 /* check that all the offsets fit the frame */
8960 for (i = 0; i < params.n_csa_offsets; i++) {
8961 if (params.csa_offsets[i] >= params.len)
8962 return -EINVAL;
8963 }
8964 }
8965
8966 if (!params.dont_wait_for_ack) {
8967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8968 if (!msg)
8969 return -ENOMEM;
8970
8971 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8972 NL80211_CMD_FRAME);
8973 if (!hdr) {
8974 err = -ENOBUFS;
8975 goto free_msg;
8976 }
8977 }
8978
8979 params.chan = chandef.chan;
8980 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8981 if (err)
8982 goto free_msg;
8983
8984 if (msg) {
8985 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
8986 NL80211_ATTR_PAD))
8987 goto nla_put_failure;
8988
8989 genlmsg_end(msg, hdr);
8990 return genlmsg_reply(msg, info);
8991 }
8992
8993 return 0;
8994
8995 nla_put_failure:
8996 err = -ENOBUFS;
8997 free_msg:
8998 nlmsg_free(msg);
8999 return err;
9000 }
9001
9002 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
9003 {
9004 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9005 struct wireless_dev *wdev = info->user_ptr[1];
9006 u64 cookie;
9007
9008 if (!info->attrs[NL80211_ATTR_COOKIE])
9009 return -EINVAL;
9010
9011 if (!rdev->ops->mgmt_tx_cancel_wait)
9012 return -EOPNOTSUPP;
9013
9014 switch (wdev->iftype) {
9015 case NL80211_IFTYPE_STATION:
9016 case NL80211_IFTYPE_ADHOC:
9017 case NL80211_IFTYPE_P2P_CLIENT:
9018 case NL80211_IFTYPE_AP:
9019 case NL80211_IFTYPE_AP_VLAN:
9020 case NL80211_IFTYPE_P2P_GO:
9021 case NL80211_IFTYPE_P2P_DEVICE:
9022 break;
9023 default:
9024 return -EOPNOTSUPP;
9025 }
9026
9027 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9028
9029 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
9030 }
9031
9032 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
9033 {
9034 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9035 struct wireless_dev *wdev;
9036 struct net_device *dev = info->user_ptr[1];
9037 u8 ps_state;
9038 bool state;
9039 int err;
9040
9041 if (!info->attrs[NL80211_ATTR_PS_STATE])
9042 return -EINVAL;
9043
9044 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
9045
9046 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
9047 return -EINVAL;
9048
9049 wdev = dev->ieee80211_ptr;
9050
9051 if (!rdev->ops->set_power_mgmt)
9052 return -EOPNOTSUPP;
9053
9054 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
9055
9056 if (state == wdev->ps)
9057 return 0;
9058
9059 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
9060 if (!err)
9061 wdev->ps = state;
9062 return err;
9063 }
9064
9065 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
9066 {
9067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9068 enum nl80211_ps_state ps_state;
9069 struct wireless_dev *wdev;
9070 struct net_device *dev = info->user_ptr[1];
9071 struct sk_buff *msg;
9072 void *hdr;
9073 int err;
9074
9075 wdev = dev->ieee80211_ptr;
9076
9077 if (!rdev->ops->set_power_mgmt)
9078 return -EOPNOTSUPP;
9079
9080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9081 if (!msg)
9082 return -ENOMEM;
9083
9084 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9085 NL80211_CMD_GET_POWER_SAVE);
9086 if (!hdr) {
9087 err = -ENOBUFS;
9088 goto free_msg;
9089 }
9090
9091 if (wdev->ps)
9092 ps_state = NL80211_PS_ENABLED;
9093 else
9094 ps_state = NL80211_PS_DISABLED;
9095
9096 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
9097 goto nla_put_failure;
9098
9099 genlmsg_end(msg, hdr);
9100 return genlmsg_reply(msg, info);
9101
9102 nla_put_failure:
9103 err = -ENOBUFS;
9104 free_msg:
9105 nlmsg_free(msg);
9106 return err;
9107 }
9108
9109 static const struct nla_policy
9110 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
9111 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
9112 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
9113 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
9114 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
9115 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
9116 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
9117 };
9118
9119 static int nl80211_set_cqm_txe(struct genl_info *info,
9120 u32 rate, u32 pkts, u32 intvl)
9121 {
9122 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9123 struct net_device *dev = info->user_ptr[1];
9124 struct wireless_dev *wdev = dev->ieee80211_ptr;
9125
9126 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
9127 return -EINVAL;
9128
9129 if (!rdev->ops->set_cqm_txe_config)
9130 return -EOPNOTSUPP;
9131
9132 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9133 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9134 return -EOPNOTSUPP;
9135
9136 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
9137 }
9138
9139 static int nl80211_set_cqm_rssi(struct genl_info *info,
9140 s32 threshold, u32 hysteresis)
9141 {
9142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9143 struct net_device *dev = info->user_ptr[1];
9144 struct wireless_dev *wdev = dev->ieee80211_ptr;
9145
9146 if (threshold > 0)
9147 return -EINVAL;
9148
9149 /* disabling - hysteresis should also be zero then */
9150 if (threshold == 0)
9151 hysteresis = 0;
9152
9153 if (!rdev->ops->set_cqm_rssi_config)
9154 return -EOPNOTSUPP;
9155
9156 if (wdev->iftype != NL80211_IFTYPE_STATION &&
9157 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
9158 return -EOPNOTSUPP;
9159
9160 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
9161 }
9162
9163 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
9164 {
9165 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
9166 struct nlattr *cqm;
9167 int err;
9168
9169 cqm = info->attrs[NL80211_ATTR_CQM];
9170 if (!cqm)
9171 return -EINVAL;
9172
9173 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
9174 nl80211_attr_cqm_policy);
9175 if (err)
9176 return err;
9177
9178 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
9179 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
9180 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
9181 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
9182
9183 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
9184 }
9185
9186 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
9187 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
9188 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
9189 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
9190 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
9191 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
9192
9193 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
9194 }
9195
9196 return -EINVAL;
9197 }
9198
9199 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
9200 {
9201 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9202 struct net_device *dev = info->user_ptr[1];
9203 struct ocb_setup setup = {};
9204 int err;
9205
9206 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9207 if (err)
9208 return err;
9209
9210 return cfg80211_join_ocb(rdev, dev, &setup);
9211 }
9212
9213 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
9214 {
9215 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9216 struct net_device *dev = info->user_ptr[1];
9217
9218 return cfg80211_leave_ocb(rdev, dev);
9219 }
9220
9221 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
9222 {
9223 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9224 struct net_device *dev = info->user_ptr[1];
9225 struct mesh_config cfg;
9226 struct mesh_setup setup;
9227 int err;
9228
9229 /* start with default */
9230 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
9231 memcpy(&setup, &default_mesh_setup, sizeof(setup));
9232
9233 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
9234 /* and parse parameters if given */
9235 err = nl80211_parse_mesh_config(info, &cfg, NULL);
9236 if (err)
9237 return err;
9238 }
9239
9240 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
9241 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
9242 return -EINVAL;
9243
9244 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
9245 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
9246
9247 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9248 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
9249 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9250 return -EINVAL;
9251
9252 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
9253 setup.beacon_interval =
9254 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9255 if (setup.beacon_interval < 10 ||
9256 setup.beacon_interval > 10000)
9257 return -EINVAL;
9258 }
9259
9260 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
9261 setup.dtim_period =
9262 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
9263 if (setup.dtim_period < 1 || setup.dtim_period > 100)
9264 return -EINVAL;
9265 }
9266
9267 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
9268 /* parse additional setup parameters if given */
9269 err = nl80211_parse_mesh_setup(info, &setup);
9270 if (err)
9271 return err;
9272 }
9273
9274 if (setup.user_mpm)
9275 cfg.auto_open_plinks = false;
9276
9277 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9278 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
9279 if (err)
9280 return err;
9281 } else {
9282 /* cfg80211_join_mesh() will sort it out */
9283 setup.chandef.chan = NULL;
9284 }
9285
9286 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9287 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9288 int n_rates =
9289 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9290 struct ieee80211_supported_band *sband;
9291
9292 if (!setup.chandef.chan)
9293 return -EINVAL;
9294
9295 sband = rdev->wiphy.bands[setup.chandef.chan->band];
9296
9297 err = ieee80211_get_ratemask(sband, rates, n_rates,
9298 &setup.basic_rates);
9299 if (err)
9300 return err;
9301 }
9302
9303 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
9304 }
9305
9306 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
9307 {
9308 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9309 struct net_device *dev = info->user_ptr[1];
9310
9311 return cfg80211_leave_mesh(rdev, dev);
9312 }
9313
9314 #ifdef CONFIG_PM
9315 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
9316 struct cfg80211_registered_device *rdev)
9317 {
9318 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
9319 struct nlattr *nl_pats, *nl_pat;
9320 int i, pat_len;
9321
9322 if (!wowlan->n_patterns)
9323 return 0;
9324
9325 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
9326 if (!nl_pats)
9327 return -ENOBUFS;
9328
9329 for (i = 0; i < wowlan->n_patterns; i++) {
9330 nl_pat = nla_nest_start(msg, i + 1);
9331 if (!nl_pat)
9332 return -ENOBUFS;
9333 pat_len = wowlan->patterns[i].pattern_len;
9334 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
9335 wowlan->patterns[i].mask) ||
9336 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9337 wowlan->patterns[i].pattern) ||
9338 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9339 wowlan->patterns[i].pkt_offset))
9340 return -ENOBUFS;
9341 nla_nest_end(msg, nl_pat);
9342 }
9343 nla_nest_end(msg, nl_pats);
9344
9345 return 0;
9346 }
9347
9348 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
9349 struct cfg80211_wowlan_tcp *tcp)
9350 {
9351 struct nlattr *nl_tcp;
9352
9353 if (!tcp)
9354 return 0;
9355
9356 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
9357 if (!nl_tcp)
9358 return -ENOBUFS;
9359
9360 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
9361 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9362 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9363 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9364 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9365 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9366 tcp->payload_len, tcp->payload) ||
9367 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9368 tcp->data_interval) ||
9369 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9370 tcp->wake_len, tcp->wake_data) ||
9371 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9372 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9373 return -ENOBUFS;
9374
9375 if (tcp->payload_seq.len &&
9376 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9377 sizeof(tcp->payload_seq), &tcp->payload_seq))
9378 return -ENOBUFS;
9379
9380 if (tcp->payload_tok.len &&
9381 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9382 sizeof(tcp->payload_tok) + tcp->tokens_size,
9383 &tcp->payload_tok))
9384 return -ENOBUFS;
9385
9386 nla_nest_end(msg, nl_tcp);
9387
9388 return 0;
9389 }
9390
9391 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9392 struct cfg80211_sched_scan_request *req)
9393 {
9394 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9395 int i;
9396
9397 if (!req)
9398 return 0;
9399
9400 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9401 if (!nd)
9402 return -ENOBUFS;
9403
9404 if (req->n_scan_plans == 1 &&
9405 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9406 req->scan_plans[0].interval * 1000))
9407 return -ENOBUFS;
9408
9409 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9410 return -ENOBUFS;
9411
9412 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9413 if (!freqs)
9414 return -ENOBUFS;
9415
9416 for (i = 0; i < req->n_channels; i++)
9417 nla_put_u32(msg, i, req->channels[i]->center_freq);
9418
9419 nla_nest_end(msg, freqs);
9420
9421 if (req->n_match_sets) {
9422 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9423 for (i = 0; i < req->n_match_sets; i++) {
9424 match = nla_nest_start(msg, i);
9425 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9426 req->match_sets[i].ssid.ssid_len,
9427 req->match_sets[i].ssid.ssid);
9428 nla_nest_end(msg, match);
9429 }
9430 nla_nest_end(msg, matches);
9431 }
9432
9433 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9434 if (!scan_plans)
9435 return -ENOBUFS;
9436
9437 for (i = 0; i < req->n_scan_plans; i++) {
9438 scan_plan = nla_nest_start(msg, i + 1);
9439 if (!scan_plan ||
9440 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9441 req->scan_plans[i].interval) ||
9442 (req->scan_plans[i].iterations &&
9443 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9444 req->scan_plans[i].iterations)))
9445 return -ENOBUFS;
9446 nla_nest_end(msg, scan_plan);
9447 }
9448 nla_nest_end(msg, scan_plans);
9449
9450 nla_nest_end(msg, nd);
9451
9452 return 0;
9453 }
9454
9455 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9456 {
9457 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9458 struct sk_buff *msg;
9459 void *hdr;
9460 u32 size = NLMSG_DEFAULT_SIZE;
9461
9462 if (!rdev->wiphy.wowlan)
9463 return -EOPNOTSUPP;
9464
9465 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9466 /* adjust size to have room for all the data */
9467 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9468 rdev->wiphy.wowlan_config->tcp->payload_len +
9469 rdev->wiphy.wowlan_config->tcp->wake_len +
9470 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9471 }
9472
9473 msg = nlmsg_new(size, GFP_KERNEL);
9474 if (!msg)
9475 return -ENOMEM;
9476
9477 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9478 NL80211_CMD_GET_WOWLAN);
9479 if (!hdr)
9480 goto nla_put_failure;
9481
9482 if (rdev->wiphy.wowlan_config) {
9483 struct nlattr *nl_wowlan;
9484
9485 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9486 if (!nl_wowlan)
9487 goto nla_put_failure;
9488
9489 if ((rdev->wiphy.wowlan_config->any &&
9490 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9491 (rdev->wiphy.wowlan_config->disconnect &&
9492 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9493 (rdev->wiphy.wowlan_config->magic_pkt &&
9494 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9495 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9496 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9497 (rdev->wiphy.wowlan_config->eap_identity_req &&
9498 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9499 (rdev->wiphy.wowlan_config->four_way_handshake &&
9500 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9501 (rdev->wiphy.wowlan_config->rfkill_release &&
9502 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9503 goto nla_put_failure;
9504
9505 if (nl80211_send_wowlan_patterns(msg, rdev))
9506 goto nla_put_failure;
9507
9508 if (nl80211_send_wowlan_tcp(msg,
9509 rdev->wiphy.wowlan_config->tcp))
9510 goto nla_put_failure;
9511
9512 if (nl80211_send_wowlan_nd(
9513 msg,
9514 rdev->wiphy.wowlan_config->nd_config))
9515 goto nla_put_failure;
9516
9517 nla_nest_end(msg, nl_wowlan);
9518 }
9519
9520 genlmsg_end(msg, hdr);
9521 return genlmsg_reply(msg, info);
9522
9523 nla_put_failure:
9524 nlmsg_free(msg);
9525 return -ENOBUFS;
9526 }
9527
9528 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9529 struct nlattr *attr,
9530 struct cfg80211_wowlan *trig)
9531 {
9532 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9533 struct cfg80211_wowlan_tcp *cfg;
9534 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9535 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9536 u32 size;
9537 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9538 int err, port;
9539
9540 if (!rdev->wiphy.wowlan->tcp)
9541 return -EINVAL;
9542
9543 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9544 nla_data(attr), nla_len(attr),
9545 nl80211_wowlan_tcp_policy);
9546 if (err)
9547 return err;
9548
9549 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9550 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9551 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9552 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9553 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9554 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9555 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9556 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9557 return -EINVAL;
9558
9559 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9560 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9561 return -EINVAL;
9562
9563 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9564 rdev->wiphy.wowlan->tcp->data_interval_max ||
9565 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9566 return -EINVAL;
9567
9568 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9569 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9570 return -EINVAL;
9571
9572 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9573 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9574 return -EINVAL;
9575
9576 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9577 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9578
9579 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9580 tokens_size = tokln - sizeof(*tok);
9581
9582 if (!tok->len || tokens_size % tok->len)
9583 return -EINVAL;
9584 if (!rdev->wiphy.wowlan->tcp->tok)
9585 return -EINVAL;
9586 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9587 return -EINVAL;
9588 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9589 return -EINVAL;
9590 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9591 return -EINVAL;
9592 if (tok->offset + tok->len > data_size)
9593 return -EINVAL;
9594 }
9595
9596 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9597 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9598 if (!rdev->wiphy.wowlan->tcp->seq)
9599 return -EINVAL;
9600 if (seq->len == 0 || seq->len > 4)
9601 return -EINVAL;
9602 if (seq->len + seq->offset > data_size)
9603 return -EINVAL;
9604 }
9605
9606 size = sizeof(*cfg);
9607 size += data_size;
9608 size += wake_size + wake_mask_size;
9609 size += tokens_size;
9610
9611 cfg = kzalloc(size, GFP_KERNEL);
9612 if (!cfg)
9613 return -ENOMEM;
9614 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9615 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9616 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9617 ETH_ALEN);
9618 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9619 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9620 else
9621 port = 0;
9622 #ifdef CONFIG_INET
9623 /* allocate a socket and port for it and use it */
9624 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9625 IPPROTO_TCP, &cfg->sock, 1);
9626 if (err) {
9627 kfree(cfg);
9628 return err;
9629 }
9630 if (inet_csk_get_port(cfg->sock->sk, port)) {
9631 sock_release(cfg->sock);
9632 kfree(cfg);
9633 return -EADDRINUSE;
9634 }
9635 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9636 #else
9637 if (!port) {
9638 kfree(cfg);
9639 return -EINVAL;
9640 }
9641 cfg->src_port = port;
9642 #endif
9643
9644 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9645 cfg->payload_len = data_size;
9646 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9647 memcpy((void *)cfg->payload,
9648 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9649 data_size);
9650 if (seq)
9651 cfg->payload_seq = *seq;
9652 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9653 cfg->wake_len = wake_size;
9654 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9655 memcpy((void *)cfg->wake_data,
9656 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9657 wake_size);
9658 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9659 data_size + wake_size;
9660 memcpy((void *)cfg->wake_mask,
9661 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9662 wake_mask_size);
9663 if (tok) {
9664 cfg->tokens_size = tokens_size;
9665 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9666 }
9667
9668 trig->tcp = cfg;
9669
9670 return 0;
9671 }
9672
9673 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9674 const struct wiphy_wowlan_support *wowlan,
9675 struct nlattr *attr,
9676 struct cfg80211_wowlan *trig)
9677 {
9678 struct nlattr **tb;
9679 int err;
9680
9681 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9682 if (!tb)
9683 return -ENOMEM;
9684
9685 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9686 err = -EOPNOTSUPP;
9687 goto out;
9688 }
9689
9690 err = nla_parse(tb, NL80211_ATTR_MAX,
9691 nla_data(attr), nla_len(attr),
9692 nl80211_policy);
9693 if (err)
9694 goto out;
9695
9696 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9697 err = PTR_ERR_OR_ZERO(trig->nd_config);
9698 if (err)
9699 trig->nd_config = NULL;
9700
9701 out:
9702 kfree(tb);
9703 return err;
9704 }
9705
9706 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9707 {
9708 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9709 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9710 struct cfg80211_wowlan new_triggers = {};
9711 struct cfg80211_wowlan *ntrig;
9712 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9713 int err, i;
9714 bool prev_enabled = rdev->wiphy.wowlan_config;
9715 bool regular = false;
9716
9717 if (!wowlan)
9718 return -EOPNOTSUPP;
9719
9720 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9721 cfg80211_rdev_free_wowlan(rdev);
9722 rdev->wiphy.wowlan_config = NULL;
9723 goto set_wakeup;
9724 }
9725
9726 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9727 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9728 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9729 nl80211_wowlan_policy);
9730 if (err)
9731 return err;
9732
9733 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9734 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9735 return -EINVAL;
9736 new_triggers.any = true;
9737 }
9738
9739 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9740 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9741 return -EINVAL;
9742 new_triggers.disconnect = true;
9743 regular = true;
9744 }
9745
9746 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9747 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9748 return -EINVAL;
9749 new_triggers.magic_pkt = true;
9750 regular = true;
9751 }
9752
9753 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9754 return -EINVAL;
9755
9756 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9757 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9758 return -EINVAL;
9759 new_triggers.gtk_rekey_failure = true;
9760 regular = true;
9761 }
9762
9763 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9764 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9765 return -EINVAL;
9766 new_triggers.eap_identity_req = true;
9767 regular = true;
9768 }
9769
9770 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9771 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9772 return -EINVAL;
9773 new_triggers.four_way_handshake = true;
9774 regular = true;
9775 }
9776
9777 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9778 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9779 return -EINVAL;
9780 new_triggers.rfkill_release = true;
9781 regular = true;
9782 }
9783
9784 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9785 struct nlattr *pat;
9786 int n_patterns = 0;
9787 int rem, pat_len, mask_len, pkt_offset;
9788 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9789
9790 regular = true;
9791
9792 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9793 rem)
9794 n_patterns++;
9795 if (n_patterns > wowlan->n_patterns)
9796 return -EINVAL;
9797
9798 new_triggers.patterns = kcalloc(n_patterns,
9799 sizeof(new_triggers.patterns[0]),
9800 GFP_KERNEL);
9801 if (!new_triggers.patterns)
9802 return -ENOMEM;
9803
9804 new_triggers.n_patterns = n_patterns;
9805 i = 0;
9806
9807 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9808 rem) {
9809 u8 *mask_pat;
9810
9811 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9812 nla_len(pat), NULL);
9813 err = -EINVAL;
9814 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9815 !pat_tb[NL80211_PKTPAT_PATTERN])
9816 goto error;
9817 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9818 mask_len = DIV_ROUND_UP(pat_len, 8);
9819 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9820 goto error;
9821 if (pat_len > wowlan->pattern_max_len ||
9822 pat_len < wowlan->pattern_min_len)
9823 goto error;
9824
9825 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9826 pkt_offset = 0;
9827 else
9828 pkt_offset = nla_get_u32(
9829 pat_tb[NL80211_PKTPAT_OFFSET]);
9830 if (pkt_offset > wowlan->max_pkt_offset)
9831 goto error;
9832 new_triggers.patterns[i].pkt_offset = pkt_offset;
9833
9834 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9835 if (!mask_pat) {
9836 err = -ENOMEM;
9837 goto error;
9838 }
9839 new_triggers.patterns[i].mask = mask_pat;
9840 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9841 mask_len);
9842 mask_pat += mask_len;
9843 new_triggers.patterns[i].pattern = mask_pat;
9844 new_triggers.patterns[i].pattern_len = pat_len;
9845 memcpy(mask_pat,
9846 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9847 pat_len);
9848 i++;
9849 }
9850 }
9851
9852 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9853 regular = true;
9854 err = nl80211_parse_wowlan_tcp(
9855 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9856 &new_triggers);
9857 if (err)
9858 goto error;
9859 }
9860
9861 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9862 regular = true;
9863 err = nl80211_parse_wowlan_nd(
9864 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9865 &new_triggers);
9866 if (err)
9867 goto error;
9868 }
9869
9870 /* The 'any' trigger means the device continues operating more or less
9871 * as in its normal operation mode and wakes up the host on most of the
9872 * normal interrupts (like packet RX, ...)
9873 * It therefore makes little sense to combine with the more constrained
9874 * wakeup trigger modes.
9875 */
9876 if (new_triggers.any && regular) {
9877 err = -EINVAL;
9878 goto error;
9879 }
9880
9881 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9882 if (!ntrig) {
9883 err = -ENOMEM;
9884 goto error;
9885 }
9886 cfg80211_rdev_free_wowlan(rdev);
9887 rdev->wiphy.wowlan_config = ntrig;
9888
9889 set_wakeup:
9890 if (rdev->ops->set_wakeup &&
9891 prev_enabled != !!rdev->wiphy.wowlan_config)
9892 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9893
9894 return 0;
9895 error:
9896 for (i = 0; i < new_triggers.n_patterns; i++)
9897 kfree(new_triggers.patterns[i].mask);
9898 kfree(new_triggers.patterns);
9899 if (new_triggers.tcp && new_triggers.tcp->sock)
9900 sock_release(new_triggers.tcp->sock);
9901 kfree(new_triggers.tcp);
9902 kfree(new_triggers.nd_config);
9903 return err;
9904 }
9905 #endif
9906
9907 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9908 struct cfg80211_registered_device *rdev)
9909 {
9910 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9911 int i, j, pat_len;
9912 struct cfg80211_coalesce_rules *rule;
9913
9914 if (!rdev->coalesce->n_rules)
9915 return 0;
9916
9917 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9918 if (!nl_rules)
9919 return -ENOBUFS;
9920
9921 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9922 nl_rule = nla_nest_start(msg, i + 1);
9923 if (!nl_rule)
9924 return -ENOBUFS;
9925
9926 rule = &rdev->coalesce->rules[i];
9927 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9928 rule->delay))
9929 return -ENOBUFS;
9930
9931 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9932 rule->condition))
9933 return -ENOBUFS;
9934
9935 nl_pats = nla_nest_start(msg,
9936 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9937 if (!nl_pats)
9938 return -ENOBUFS;
9939
9940 for (j = 0; j < rule->n_patterns; j++) {
9941 nl_pat = nla_nest_start(msg, j + 1);
9942 if (!nl_pat)
9943 return -ENOBUFS;
9944 pat_len = rule->patterns[j].pattern_len;
9945 if (nla_put(msg, NL80211_PKTPAT_MASK,
9946 DIV_ROUND_UP(pat_len, 8),
9947 rule->patterns[j].mask) ||
9948 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9949 rule->patterns[j].pattern) ||
9950 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9951 rule->patterns[j].pkt_offset))
9952 return -ENOBUFS;
9953 nla_nest_end(msg, nl_pat);
9954 }
9955 nla_nest_end(msg, nl_pats);
9956 nla_nest_end(msg, nl_rule);
9957 }
9958 nla_nest_end(msg, nl_rules);
9959
9960 return 0;
9961 }
9962
9963 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9964 {
9965 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9966 struct sk_buff *msg;
9967 void *hdr;
9968
9969 if (!rdev->wiphy.coalesce)
9970 return -EOPNOTSUPP;
9971
9972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9973 if (!msg)
9974 return -ENOMEM;
9975
9976 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9977 NL80211_CMD_GET_COALESCE);
9978 if (!hdr)
9979 goto nla_put_failure;
9980
9981 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9982 goto nla_put_failure;
9983
9984 genlmsg_end(msg, hdr);
9985 return genlmsg_reply(msg, info);
9986
9987 nla_put_failure:
9988 nlmsg_free(msg);
9989 return -ENOBUFS;
9990 }
9991
9992 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9993 {
9994 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9995 int i, j;
9996 struct cfg80211_coalesce_rules *rule;
9997
9998 if (!coalesce)
9999 return;
10000
10001 for (i = 0; i < coalesce->n_rules; i++) {
10002 rule = &coalesce->rules[i];
10003 for (j = 0; j < rule->n_patterns; j++)
10004 kfree(rule->patterns[j].mask);
10005 kfree(rule->patterns);
10006 }
10007 kfree(coalesce->rules);
10008 kfree(coalesce);
10009 rdev->coalesce = NULL;
10010 }
10011
10012 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
10013 struct nlattr *rule,
10014 struct cfg80211_coalesce_rules *new_rule)
10015 {
10016 int err, i;
10017 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10018 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
10019 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
10020 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
10021
10022 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
10023 nla_len(rule), nl80211_coalesce_policy);
10024 if (err)
10025 return err;
10026
10027 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
10028 new_rule->delay =
10029 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
10030 if (new_rule->delay > coalesce->max_delay)
10031 return -EINVAL;
10032
10033 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
10034 new_rule->condition =
10035 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
10036 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
10037 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
10038 return -EINVAL;
10039
10040 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
10041 return -EINVAL;
10042
10043 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10044 rem)
10045 n_patterns++;
10046 if (n_patterns > coalesce->n_patterns)
10047 return -EINVAL;
10048
10049 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
10050 GFP_KERNEL);
10051 if (!new_rule->patterns)
10052 return -ENOMEM;
10053
10054 new_rule->n_patterns = n_patterns;
10055 i = 0;
10056
10057 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
10058 rem) {
10059 u8 *mask_pat;
10060
10061 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
10062 nla_len(pat), NULL);
10063 if (!pat_tb[NL80211_PKTPAT_MASK] ||
10064 !pat_tb[NL80211_PKTPAT_PATTERN])
10065 return -EINVAL;
10066 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
10067 mask_len = DIV_ROUND_UP(pat_len, 8);
10068 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
10069 return -EINVAL;
10070 if (pat_len > coalesce->pattern_max_len ||
10071 pat_len < coalesce->pattern_min_len)
10072 return -EINVAL;
10073
10074 if (!pat_tb[NL80211_PKTPAT_OFFSET])
10075 pkt_offset = 0;
10076 else
10077 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
10078 if (pkt_offset > coalesce->max_pkt_offset)
10079 return -EINVAL;
10080 new_rule->patterns[i].pkt_offset = pkt_offset;
10081
10082 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
10083 if (!mask_pat)
10084 return -ENOMEM;
10085
10086 new_rule->patterns[i].mask = mask_pat;
10087 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
10088 mask_len);
10089
10090 mask_pat += mask_len;
10091 new_rule->patterns[i].pattern = mask_pat;
10092 new_rule->patterns[i].pattern_len = pat_len;
10093 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
10094 pat_len);
10095 i++;
10096 }
10097
10098 return 0;
10099 }
10100
10101 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
10102 {
10103 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10104 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
10105 struct cfg80211_coalesce new_coalesce = {};
10106 struct cfg80211_coalesce *n_coalesce;
10107 int err, rem_rule, n_rules = 0, i, j;
10108 struct nlattr *rule;
10109 struct cfg80211_coalesce_rules *tmp_rule;
10110
10111 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
10112 return -EOPNOTSUPP;
10113
10114 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
10115 cfg80211_rdev_free_coalesce(rdev);
10116 rdev_set_coalesce(rdev, NULL);
10117 return 0;
10118 }
10119
10120 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10121 rem_rule)
10122 n_rules++;
10123 if (n_rules > coalesce->n_rules)
10124 return -EINVAL;
10125
10126 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
10127 GFP_KERNEL);
10128 if (!new_coalesce.rules)
10129 return -ENOMEM;
10130
10131 new_coalesce.n_rules = n_rules;
10132 i = 0;
10133
10134 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
10135 rem_rule) {
10136 err = nl80211_parse_coalesce_rule(rdev, rule,
10137 &new_coalesce.rules[i]);
10138 if (err)
10139 goto error;
10140
10141 i++;
10142 }
10143
10144 err = rdev_set_coalesce(rdev, &new_coalesce);
10145 if (err)
10146 goto error;
10147
10148 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
10149 if (!n_coalesce) {
10150 err = -ENOMEM;
10151 goto error;
10152 }
10153 cfg80211_rdev_free_coalesce(rdev);
10154 rdev->coalesce = n_coalesce;
10155
10156 return 0;
10157 error:
10158 for (i = 0; i < new_coalesce.n_rules; i++) {
10159 tmp_rule = &new_coalesce.rules[i];
10160 for (j = 0; j < tmp_rule->n_patterns; j++)
10161 kfree(tmp_rule->patterns[j].mask);
10162 kfree(tmp_rule->patterns);
10163 }
10164 kfree(new_coalesce.rules);
10165
10166 return err;
10167 }
10168
10169 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
10170 {
10171 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10172 struct net_device *dev = info->user_ptr[1];
10173 struct wireless_dev *wdev = dev->ieee80211_ptr;
10174 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
10175 struct cfg80211_gtk_rekey_data rekey_data;
10176 int err;
10177
10178 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
10179 return -EINVAL;
10180
10181 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
10182 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
10183 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
10184 nl80211_rekey_policy);
10185 if (err)
10186 return err;
10187
10188 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
10189 return -ERANGE;
10190 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
10191 return -ERANGE;
10192 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
10193 return -ERANGE;
10194
10195 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
10196 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
10197 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
10198
10199 wdev_lock(wdev);
10200 if (!wdev->current_bss) {
10201 err = -ENOTCONN;
10202 goto out;
10203 }
10204
10205 if (!rdev->ops->set_rekey_data) {
10206 err = -EOPNOTSUPP;
10207 goto out;
10208 }
10209
10210 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
10211 out:
10212 wdev_unlock(wdev);
10213 return err;
10214 }
10215
10216 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
10217 struct genl_info *info)
10218 {
10219 struct net_device *dev = info->user_ptr[1];
10220 struct wireless_dev *wdev = dev->ieee80211_ptr;
10221
10222 if (wdev->iftype != NL80211_IFTYPE_AP &&
10223 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10224 return -EINVAL;
10225
10226 if (wdev->ap_unexpected_nlportid)
10227 return -EBUSY;
10228
10229 wdev->ap_unexpected_nlportid = info->snd_portid;
10230 return 0;
10231 }
10232
10233 static int nl80211_probe_client(struct sk_buff *skb,
10234 struct genl_info *info)
10235 {
10236 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10237 struct net_device *dev = info->user_ptr[1];
10238 struct wireless_dev *wdev = dev->ieee80211_ptr;
10239 struct sk_buff *msg;
10240 void *hdr;
10241 const u8 *addr;
10242 u64 cookie;
10243 int err;
10244
10245 if (wdev->iftype != NL80211_IFTYPE_AP &&
10246 wdev->iftype != NL80211_IFTYPE_P2P_GO)
10247 return -EOPNOTSUPP;
10248
10249 if (!info->attrs[NL80211_ATTR_MAC])
10250 return -EINVAL;
10251
10252 if (!rdev->ops->probe_client)
10253 return -EOPNOTSUPP;
10254
10255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10256 if (!msg)
10257 return -ENOMEM;
10258
10259 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10260 NL80211_CMD_PROBE_CLIENT);
10261 if (!hdr) {
10262 err = -ENOBUFS;
10263 goto free_msg;
10264 }
10265
10266 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10267
10268 err = rdev_probe_client(rdev, dev, addr, &cookie);
10269 if (err)
10270 goto free_msg;
10271
10272 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10273 NL80211_ATTR_PAD))
10274 goto nla_put_failure;
10275
10276 genlmsg_end(msg, hdr);
10277
10278 return genlmsg_reply(msg, info);
10279
10280 nla_put_failure:
10281 err = -ENOBUFS;
10282 free_msg:
10283 nlmsg_free(msg);
10284 return err;
10285 }
10286
10287 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
10288 {
10289 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10290 struct cfg80211_beacon_registration *reg, *nreg;
10291 int rv;
10292
10293 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
10294 return -EOPNOTSUPP;
10295
10296 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
10297 if (!nreg)
10298 return -ENOMEM;
10299
10300 /* First, check if already registered. */
10301 spin_lock_bh(&rdev->beacon_registrations_lock);
10302 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10303 if (reg->nlportid == info->snd_portid) {
10304 rv = -EALREADY;
10305 goto out_err;
10306 }
10307 }
10308 /* Add it to the list */
10309 nreg->nlportid = info->snd_portid;
10310 list_add(&nreg->list, &rdev->beacon_registrations);
10311
10312 spin_unlock_bh(&rdev->beacon_registrations_lock);
10313
10314 return 0;
10315 out_err:
10316 spin_unlock_bh(&rdev->beacon_registrations_lock);
10317 kfree(nreg);
10318 return rv;
10319 }
10320
10321 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
10322 {
10323 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10324 struct wireless_dev *wdev = info->user_ptr[1];
10325 int err;
10326
10327 if (!rdev->ops->start_p2p_device)
10328 return -EOPNOTSUPP;
10329
10330 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10331 return -EOPNOTSUPP;
10332
10333 if (wdev->p2p_started)
10334 return 0;
10335
10336 if (rfkill_blocked(rdev->rfkill))
10337 return -ERFKILL;
10338
10339 err = rdev_start_p2p_device(rdev, wdev);
10340 if (err)
10341 return err;
10342
10343 wdev->p2p_started = true;
10344 rdev->opencount++;
10345
10346 return 0;
10347 }
10348
10349 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
10350 {
10351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10352 struct wireless_dev *wdev = info->user_ptr[1];
10353
10354 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
10355 return -EOPNOTSUPP;
10356
10357 if (!rdev->ops->stop_p2p_device)
10358 return -EOPNOTSUPP;
10359
10360 cfg80211_stop_p2p_device(rdev, wdev);
10361
10362 return 0;
10363 }
10364
10365 static int nl80211_get_protocol_features(struct sk_buff *skb,
10366 struct genl_info *info)
10367 {
10368 void *hdr;
10369 struct sk_buff *msg;
10370
10371 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10372 if (!msg)
10373 return -ENOMEM;
10374
10375 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10376 NL80211_CMD_GET_PROTOCOL_FEATURES);
10377 if (!hdr)
10378 goto nla_put_failure;
10379
10380 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10381 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10382 goto nla_put_failure;
10383
10384 genlmsg_end(msg, hdr);
10385 return genlmsg_reply(msg, info);
10386
10387 nla_put_failure:
10388 kfree_skb(msg);
10389 return -ENOBUFS;
10390 }
10391
10392 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10393 {
10394 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10395 struct cfg80211_update_ft_ies_params ft_params;
10396 struct net_device *dev = info->user_ptr[1];
10397
10398 if (!rdev->ops->update_ft_ies)
10399 return -EOPNOTSUPP;
10400
10401 if (!info->attrs[NL80211_ATTR_MDID] ||
10402 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10403 return -EINVAL;
10404
10405 memset(&ft_params, 0, sizeof(ft_params));
10406 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10407 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10408 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10409
10410 return rdev_update_ft_ies(rdev, dev, &ft_params);
10411 }
10412
10413 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10414 struct genl_info *info)
10415 {
10416 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10417 struct wireless_dev *wdev = info->user_ptr[1];
10418 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10419 u16 duration;
10420 int ret;
10421
10422 if (!rdev->ops->crit_proto_start)
10423 return -EOPNOTSUPP;
10424
10425 if (WARN_ON(!rdev->ops->crit_proto_stop))
10426 return -EINVAL;
10427
10428 if (rdev->crit_proto_nlportid)
10429 return -EBUSY;
10430
10431 /* determine protocol if provided */
10432 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10433 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10434
10435 if (proto >= NUM_NL80211_CRIT_PROTO)
10436 return -EINVAL;
10437
10438 /* timeout must be provided */
10439 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10440 return -EINVAL;
10441
10442 duration =
10443 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10444
10445 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10446 return -ERANGE;
10447
10448 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10449 if (!ret)
10450 rdev->crit_proto_nlportid = info->snd_portid;
10451
10452 return ret;
10453 }
10454
10455 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10456 struct genl_info *info)
10457 {
10458 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10459 struct wireless_dev *wdev = info->user_ptr[1];
10460
10461 if (!rdev->ops->crit_proto_stop)
10462 return -EOPNOTSUPP;
10463
10464 if (rdev->crit_proto_nlportid) {
10465 rdev->crit_proto_nlportid = 0;
10466 rdev_crit_proto_stop(rdev, wdev);
10467 }
10468 return 0;
10469 }
10470
10471 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10472 {
10473 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10474 struct wireless_dev *wdev =
10475 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10476 int i, err;
10477 u32 vid, subcmd;
10478
10479 if (!rdev->wiphy.vendor_commands)
10480 return -EOPNOTSUPP;
10481
10482 if (IS_ERR(wdev)) {
10483 err = PTR_ERR(wdev);
10484 if (err != -EINVAL)
10485 return err;
10486 wdev = NULL;
10487 } else if (wdev->wiphy != &rdev->wiphy) {
10488 return -EINVAL;
10489 }
10490
10491 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10492 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10493 return -EINVAL;
10494
10495 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10496 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10497 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10498 const struct wiphy_vendor_command *vcmd;
10499 void *data = NULL;
10500 int len = 0;
10501
10502 vcmd = &rdev->wiphy.vendor_commands[i];
10503
10504 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10505 continue;
10506
10507 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10508 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10509 if (!wdev)
10510 return -EINVAL;
10511 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10512 !wdev->netdev)
10513 return -EINVAL;
10514
10515 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10516 if (wdev->netdev &&
10517 !netif_running(wdev->netdev))
10518 return -ENETDOWN;
10519 if (!wdev->netdev && !wdev->p2p_started)
10520 return -ENETDOWN;
10521 }
10522
10523 if (!vcmd->doit)
10524 return -EOPNOTSUPP;
10525 } else {
10526 wdev = NULL;
10527 }
10528
10529 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10530 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10531 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10532 }
10533
10534 rdev->cur_cmd_info = info;
10535 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10536 data, len);
10537 rdev->cur_cmd_info = NULL;
10538 return err;
10539 }
10540
10541 return -EOPNOTSUPP;
10542 }
10543
10544 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10545 struct netlink_callback *cb,
10546 struct cfg80211_registered_device **rdev,
10547 struct wireless_dev **wdev)
10548 {
10549 u32 vid, subcmd;
10550 unsigned int i;
10551 int vcmd_idx = -1;
10552 int err;
10553 void *data = NULL;
10554 unsigned int data_len = 0;
10555
10556 rtnl_lock();
10557
10558 if (cb->args[0]) {
10559 /* subtract the 1 again here */
10560 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10561 struct wireless_dev *tmp;
10562
10563 if (!wiphy) {
10564 err = -ENODEV;
10565 goto out_unlock;
10566 }
10567 *rdev = wiphy_to_rdev(wiphy);
10568 *wdev = NULL;
10569
10570 if (cb->args[1]) {
10571 list_for_each_entry(tmp, &wiphy->wdev_list, list) {
10572 if (tmp->identifier == cb->args[1] - 1) {
10573 *wdev = tmp;
10574 break;
10575 }
10576 }
10577 }
10578
10579 /* keep rtnl locked in successful case */
10580 return 0;
10581 }
10582
10583 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10584 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10585 nl80211_policy);
10586 if (err)
10587 goto out_unlock;
10588
10589 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10590 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10591 err = -EINVAL;
10592 goto out_unlock;
10593 }
10594
10595 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10596 nl80211_fam.attrbuf);
10597 if (IS_ERR(*wdev))
10598 *wdev = NULL;
10599
10600 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10601 nl80211_fam.attrbuf);
10602 if (IS_ERR(*rdev)) {
10603 err = PTR_ERR(*rdev);
10604 goto out_unlock;
10605 }
10606
10607 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10608 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10609
10610 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10611 const struct wiphy_vendor_command *vcmd;
10612
10613 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10614
10615 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10616 continue;
10617
10618 if (!vcmd->dumpit) {
10619 err = -EOPNOTSUPP;
10620 goto out_unlock;
10621 }
10622
10623 vcmd_idx = i;
10624 break;
10625 }
10626
10627 if (vcmd_idx < 0) {
10628 err = -EOPNOTSUPP;
10629 goto out_unlock;
10630 }
10631
10632 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10633 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10634 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10635 }
10636
10637 /* 0 is the first index - add 1 to parse only once */
10638 cb->args[0] = (*rdev)->wiphy_idx + 1;
10639 /* add 1 to know if it was NULL */
10640 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10641 cb->args[2] = vcmd_idx;
10642 cb->args[3] = (unsigned long)data;
10643 cb->args[4] = data_len;
10644
10645 /* keep rtnl locked in successful case */
10646 return 0;
10647 out_unlock:
10648 rtnl_unlock();
10649 return err;
10650 }
10651
10652 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10653 struct netlink_callback *cb)
10654 {
10655 struct cfg80211_registered_device *rdev;
10656 struct wireless_dev *wdev;
10657 unsigned int vcmd_idx;
10658 const struct wiphy_vendor_command *vcmd;
10659 void *data;
10660 int data_len;
10661 int err;
10662 struct nlattr *vendor_data;
10663
10664 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10665 if (err)
10666 return err;
10667
10668 vcmd_idx = cb->args[2];
10669 data = (void *)cb->args[3];
10670 data_len = cb->args[4];
10671 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10672
10673 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10674 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10675 if (!wdev)
10676 return -EINVAL;
10677 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10678 !wdev->netdev)
10679 return -EINVAL;
10680
10681 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10682 if (wdev->netdev &&
10683 !netif_running(wdev->netdev))
10684 return -ENETDOWN;
10685 if (!wdev->netdev && !wdev->p2p_started)
10686 return -ENETDOWN;
10687 }
10688 }
10689
10690 while (1) {
10691 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10692 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10693 NL80211_CMD_VENDOR);
10694 if (!hdr)
10695 break;
10696
10697 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10698 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10699 wdev_id(wdev),
10700 NL80211_ATTR_PAD))) {
10701 genlmsg_cancel(skb, hdr);
10702 break;
10703 }
10704
10705 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10706 if (!vendor_data) {
10707 genlmsg_cancel(skb, hdr);
10708 break;
10709 }
10710
10711 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10712 (unsigned long *)&cb->args[5]);
10713 nla_nest_end(skb, vendor_data);
10714
10715 if (err == -ENOBUFS || err == -ENOENT) {
10716 genlmsg_cancel(skb, hdr);
10717 break;
10718 } else if (err) {
10719 genlmsg_cancel(skb, hdr);
10720 goto out;
10721 }
10722
10723 genlmsg_end(skb, hdr);
10724 }
10725
10726 err = skb->len;
10727 out:
10728 rtnl_unlock();
10729 return err;
10730 }
10731
10732 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10733 enum nl80211_commands cmd,
10734 enum nl80211_attrs attr,
10735 int approxlen)
10736 {
10737 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10738
10739 if (WARN_ON(!rdev->cur_cmd_info))
10740 return NULL;
10741
10742 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10743 rdev->cur_cmd_info->snd_portid,
10744 rdev->cur_cmd_info->snd_seq,
10745 cmd, attr, NULL, GFP_KERNEL);
10746 }
10747 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10748
10749 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10750 {
10751 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10752 void *hdr = ((void **)skb->cb)[1];
10753 struct nlattr *data = ((void **)skb->cb)[2];
10754
10755 /* clear CB data for netlink core to own from now on */
10756 memset(skb->cb, 0, sizeof(skb->cb));
10757
10758 if (WARN_ON(!rdev->cur_cmd_info)) {
10759 kfree_skb(skb);
10760 return -EINVAL;
10761 }
10762
10763 nla_nest_end(skb, data);
10764 genlmsg_end(skb, hdr);
10765 return genlmsg_reply(skb, rdev->cur_cmd_info);
10766 }
10767 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10768
10769 static int nl80211_set_qos_map(struct sk_buff *skb,
10770 struct genl_info *info)
10771 {
10772 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10773 struct cfg80211_qos_map *qos_map = NULL;
10774 struct net_device *dev = info->user_ptr[1];
10775 u8 *pos, len, num_des, des_len, des;
10776 int ret;
10777
10778 if (!rdev->ops->set_qos_map)
10779 return -EOPNOTSUPP;
10780
10781 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10782 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10783 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10784
10785 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10786 len > IEEE80211_QOS_MAP_LEN_MAX)
10787 return -EINVAL;
10788
10789 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10790 if (!qos_map)
10791 return -ENOMEM;
10792
10793 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10794 if (num_des) {
10795 des_len = num_des *
10796 sizeof(struct cfg80211_dscp_exception);
10797 memcpy(qos_map->dscp_exception, pos, des_len);
10798 qos_map->num_des = num_des;
10799 for (des = 0; des < num_des; des++) {
10800 if (qos_map->dscp_exception[des].up > 7) {
10801 kfree(qos_map);
10802 return -EINVAL;
10803 }
10804 }
10805 pos += des_len;
10806 }
10807 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10808 }
10809
10810 wdev_lock(dev->ieee80211_ptr);
10811 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10812 if (!ret)
10813 ret = rdev_set_qos_map(rdev, dev, qos_map);
10814 wdev_unlock(dev->ieee80211_ptr);
10815
10816 kfree(qos_map);
10817 return ret;
10818 }
10819
10820 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10821 {
10822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10823 struct net_device *dev = info->user_ptr[1];
10824 struct wireless_dev *wdev = dev->ieee80211_ptr;
10825 const u8 *peer;
10826 u8 tsid, up;
10827 u16 admitted_time = 0;
10828 int err;
10829
10830 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10831 return -EOPNOTSUPP;
10832
10833 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10834 !info->attrs[NL80211_ATTR_USER_PRIO])
10835 return -EINVAL;
10836
10837 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10838 if (tsid >= IEEE80211_NUM_TIDS)
10839 return -EINVAL;
10840
10841 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10842 if (up >= IEEE80211_NUM_UPS)
10843 return -EINVAL;
10844
10845 /* WMM uses TIDs 0-7 even for TSPEC */
10846 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10847 /* TODO: handle 802.11 TSPEC/admission control
10848 * need more attributes for that (e.g. BA session requirement);
10849 * change the WMM adminssion test above to allow both then
10850 */
10851 return -EINVAL;
10852 }
10853
10854 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10855
10856 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10857 admitted_time =
10858 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10859 if (!admitted_time)
10860 return -EINVAL;
10861 }
10862
10863 wdev_lock(wdev);
10864 switch (wdev->iftype) {
10865 case NL80211_IFTYPE_STATION:
10866 case NL80211_IFTYPE_P2P_CLIENT:
10867 if (wdev->current_bss)
10868 break;
10869 err = -ENOTCONN;
10870 goto out;
10871 default:
10872 err = -EOPNOTSUPP;
10873 goto out;
10874 }
10875
10876 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10877
10878 out:
10879 wdev_unlock(wdev);
10880 return err;
10881 }
10882
10883 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10884 {
10885 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10886 struct net_device *dev = info->user_ptr[1];
10887 struct wireless_dev *wdev = dev->ieee80211_ptr;
10888 const u8 *peer;
10889 u8 tsid;
10890 int err;
10891
10892 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10893 return -EINVAL;
10894
10895 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10896 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10897
10898 wdev_lock(wdev);
10899 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10900 wdev_unlock(wdev);
10901
10902 return err;
10903 }
10904
10905 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10906 struct genl_info *info)
10907 {
10908 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10909 struct net_device *dev = info->user_ptr[1];
10910 struct wireless_dev *wdev = dev->ieee80211_ptr;
10911 struct cfg80211_chan_def chandef = {};
10912 const u8 *addr;
10913 u8 oper_class;
10914 int err;
10915
10916 if (!rdev->ops->tdls_channel_switch ||
10917 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10918 return -EOPNOTSUPP;
10919
10920 switch (dev->ieee80211_ptr->iftype) {
10921 case NL80211_IFTYPE_STATION:
10922 case NL80211_IFTYPE_P2P_CLIENT:
10923 break;
10924 default:
10925 return -EOPNOTSUPP;
10926 }
10927
10928 if (!info->attrs[NL80211_ATTR_MAC] ||
10929 !info->attrs[NL80211_ATTR_OPER_CLASS])
10930 return -EINVAL;
10931
10932 err = nl80211_parse_chandef(rdev, info, &chandef);
10933 if (err)
10934 return err;
10935
10936 /*
10937 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10938 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10939 * specification is not defined for them.
10940 */
10941 if (chandef.chan->band == NL80211_BAND_2GHZ &&
10942 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10943 chandef.width != NL80211_CHAN_WIDTH_20)
10944 return -EINVAL;
10945
10946 /* we will be active on the TDLS link */
10947 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10948 wdev->iftype))
10949 return -EINVAL;
10950
10951 /* don't allow switching to DFS channels */
10952 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10953 return -EINVAL;
10954
10955 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10956 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10957
10958 wdev_lock(wdev);
10959 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10960 wdev_unlock(wdev);
10961
10962 return err;
10963 }
10964
10965 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10966 struct genl_info *info)
10967 {
10968 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10969 struct net_device *dev = info->user_ptr[1];
10970 struct wireless_dev *wdev = dev->ieee80211_ptr;
10971 const u8 *addr;
10972
10973 if (!rdev->ops->tdls_channel_switch ||
10974 !rdev->ops->tdls_cancel_channel_switch ||
10975 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10976 return -EOPNOTSUPP;
10977
10978 switch (dev->ieee80211_ptr->iftype) {
10979 case NL80211_IFTYPE_STATION:
10980 case NL80211_IFTYPE_P2P_CLIENT:
10981 break;
10982 default:
10983 return -EOPNOTSUPP;
10984 }
10985
10986 if (!info->attrs[NL80211_ATTR_MAC])
10987 return -EINVAL;
10988
10989 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10990
10991 wdev_lock(wdev);
10992 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10993 wdev_unlock(wdev);
10994
10995 return 0;
10996 }
10997
10998 #define NL80211_FLAG_NEED_WIPHY 0x01
10999 #define NL80211_FLAG_NEED_NETDEV 0x02
11000 #define NL80211_FLAG_NEED_RTNL 0x04
11001 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
11002 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
11003 NL80211_FLAG_CHECK_NETDEV_UP)
11004 #define NL80211_FLAG_NEED_WDEV 0x10
11005 /* If a netdev is associated, it must be UP, P2P must be started */
11006 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
11007 NL80211_FLAG_CHECK_NETDEV_UP)
11008 #define NL80211_FLAG_CLEAR_SKB 0x20
11009
11010 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
11011 struct genl_info *info)
11012 {
11013 struct cfg80211_registered_device *rdev;
11014 struct wireless_dev *wdev;
11015 struct net_device *dev;
11016 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
11017
11018 if (rtnl)
11019 rtnl_lock();
11020
11021 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
11022 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
11023 if (IS_ERR(rdev)) {
11024 if (rtnl)
11025 rtnl_unlock();
11026 return PTR_ERR(rdev);
11027 }
11028 info->user_ptr[0] = rdev;
11029 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
11030 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11031 ASSERT_RTNL();
11032
11033 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
11034 info->attrs);
11035 if (IS_ERR(wdev)) {
11036 if (rtnl)
11037 rtnl_unlock();
11038 return PTR_ERR(wdev);
11039 }
11040
11041 dev = wdev->netdev;
11042 rdev = wiphy_to_rdev(wdev->wiphy);
11043
11044 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
11045 if (!dev) {
11046 if (rtnl)
11047 rtnl_unlock();
11048 return -EINVAL;
11049 }
11050
11051 info->user_ptr[1] = dev;
11052 } else {
11053 info->user_ptr[1] = wdev;
11054 }
11055
11056 if (dev) {
11057 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
11058 !netif_running(dev)) {
11059 if (rtnl)
11060 rtnl_unlock();
11061 return -ENETDOWN;
11062 }
11063
11064 dev_hold(dev);
11065 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
11066 if (!wdev->p2p_started) {
11067 if (rtnl)
11068 rtnl_unlock();
11069 return -ENETDOWN;
11070 }
11071 }
11072
11073 info->user_ptr[0] = rdev;
11074 }
11075
11076 return 0;
11077 }
11078
11079 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
11080 struct genl_info *info)
11081 {
11082 if (info->user_ptr[1]) {
11083 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
11084 struct wireless_dev *wdev = info->user_ptr[1];
11085
11086 if (wdev->netdev)
11087 dev_put(wdev->netdev);
11088 } else {
11089 dev_put(info->user_ptr[1]);
11090 }
11091 }
11092
11093 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
11094 rtnl_unlock();
11095
11096 /* If needed, clear the netlink message payload from the SKB
11097 * as it might contain key data that shouldn't stick around on
11098 * the heap after the SKB is freed. The netlink message header
11099 * is still needed for further processing, so leave it intact.
11100 */
11101 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
11102 struct nlmsghdr *nlh = nlmsg_hdr(skb);
11103
11104 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
11105 }
11106 }
11107
11108 static const struct genl_ops nl80211_ops[] = {
11109 {
11110 .cmd = NL80211_CMD_GET_WIPHY,
11111 .doit = nl80211_get_wiphy,
11112 .dumpit = nl80211_dump_wiphy,
11113 .done = nl80211_dump_wiphy_done,
11114 .policy = nl80211_policy,
11115 /* can be retrieved by unprivileged users */
11116 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11117 NL80211_FLAG_NEED_RTNL,
11118 },
11119 {
11120 .cmd = NL80211_CMD_SET_WIPHY,
11121 .doit = nl80211_set_wiphy,
11122 .policy = nl80211_policy,
11123 .flags = GENL_UNS_ADMIN_PERM,
11124 .internal_flags = NL80211_FLAG_NEED_RTNL,
11125 },
11126 {
11127 .cmd = NL80211_CMD_GET_INTERFACE,
11128 .doit = nl80211_get_interface,
11129 .dumpit = nl80211_dump_interface,
11130 .policy = nl80211_policy,
11131 /* can be retrieved by unprivileged users */
11132 .internal_flags = NL80211_FLAG_NEED_WDEV |
11133 NL80211_FLAG_NEED_RTNL,
11134 },
11135 {
11136 .cmd = NL80211_CMD_SET_INTERFACE,
11137 .doit = nl80211_set_interface,
11138 .policy = nl80211_policy,
11139 .flags = GENL_UNS_ADMIN_PERM,
11140 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11141 NL80211_FLAG_NEED_RTNL,
11142 },
11143 {
11144 .cmd = NL80211_CMD_NEW_INTERFACE,
11145 .doit = nl80211_new_interface,
11146 .policy = nl80211_policy,
11147 .flags = GENL_UNS_ADMIN_PERM,
11148 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11149 NL80211_FLAG_NEED_RTNL,
11150 },
11151 {
11152 .cmd = NL80211_CMD_DEL_INTERFACE,
11153 .doit = nl80211_del_interface,
11154 .policy = nl80211_policy,
11155 .flags = GENL_UNS_ADMIN_PERM,
11156 .internal_flags = NL80211_FLAG_NEED_WDEV |
11157 NL80211_FLAG_NEED_RTNL,
11158 },
11159 {
11160 .cmd = NL80211_CMD_GET_KEY,
11161 .doit = nl80211_get_key,
11162 .policy = nl80211_policy,
11163 .flags = GENL_UNS_ADMIN_PERM,
11164 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11165 NL80211_FLAG_NEED_RTNL,
11166 },
11167 {
11168 .cmd = NL80211_CMD_SET_KEY,
11169 .doit = nl80211_set_key,
11170 .policy = nl80211_policy,
11171 .flags = GENL_UNS_ADMIN_PERM,
11172 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11173 NL80211_FLAG_NEED_RTNL |
11174 NL80211_FLAG_CLEAR_SKB,
11175 },
11176 {
11177 .cmd = NL80211_CMD_NEW_KEY,
11178 .doit = nl80211_new_key,
11179 .policy = nl80211_policy,
11180 .flags = GENL_UNS_ADMIN_PERM,
11181 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11182 NL80211_FLAG_NEED_RTNL |
11183 NL80211_FLAG_CLEAR_SKB,
11184 },
11185 {
11186 .cmd = NL80211_CMD_DEL_KEY,
11187 .doit = nl80211_del_key,
11188 .policy = nl80211_policy,
11189 .flags = GENL_UNS_ADMIN_PERM,
11190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11191 NL80211_FLAG_NEED_RTNL,
11192 },
11193 {
11194 .cmd = NL80211_CMD_SET_BEACON,
11195 .policy = nl80211_policy,
11196 .flags = GENL_UNS_ADMIN_PERM,
11197 .doit = nl80211_set_beacon,
11198 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11199 NL80211_FLAG_NEED_RTNL,
11200 },
11201 {
11202 .cmd = NL80211_CMD_START_AP,
11203 .policy = nl80211_policy,
11204 .flags = GENL_UNS_ADMIN_PERM,
11205 .doit = nl80211_start_ap,
11206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11207 NL80211_FLAG_NEED_RTNL,
11208 },
11209 {
11210 .cmd = NL80211_CMD_STOP_AP,
11211 .policy = nl80211_policy,
11212 .flags = GENL_UNS_ADMIN_PERM,
11213 .doit = nl80211_stop_ap,
11214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11215 NL80211_FLAG_NEED_RTNL,
11216 },
11217 {
11218 .cmd = NL80211_CMD_GET_STATION,
11219 .doit = nl80211_get_station,
11220 .dumpit = nl80211_dump_station,
11221 .policy = nl80211_policy,
11222 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11223 NL80211_FLAG_NEED_RTNL,
11224 },
11225 {
11226 .cmd = NL80211_CMD_SET_STATION,
11227 .doit = nl80211_set_station,
11228 .policy = nl80211_policy,
11229 .flags = GENL_UNS_ADMIN_PERM,
11230 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11231 NL80211_FLAG_NEED_RTNL,
11232 },
11233 {
11234 .cmd = NL80211_CMD_NEW_STATION,
11235 .doit = nl80211_new_station,
11236 .policy = nl80211_policy,
11237 .flags = GENL_UNS_ADMIN_PERM,
11238 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11239 NL80211_FLAG_NEED_RTNL,
11240 },
11241 {
11242 .cmd = NL80211_CMD_DEL_STATION,
11243 .doit = nl80211_del_station,
11244 .policy = nl80211_policy,
11245 .flags = GENL_UNS_ADMIN_PERM,
11246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11247 NL80211_FLAG_NEED_RTNL,
11248 },
11249 {
11250 .cmd = NL80211_CMD_GET_MPATH,
11251 .doit = nl80211_get_mpath,
11252 .dumpit = nl80211_dump_mpath,
11253 .policy = nl80211_policy,
11254 .flags = GENL_UNS_ADMIN_PERM,
11255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11256 NL80211_FLAG_NEED_RTNL,
11257 },
11258 {
11259 .cmd = NL80211_CMD_GET_MPP,
11260 .doit = nl80211_get_mpp,
11261 .dumpit = nl80211_dump_mpp,
11262 .policy = nl80211_policy,
11263 .flags = GENL_UNS_ADMIN_PERM,
11264 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11265 NL80211_FLAG_NEED_RTNL,
11266 },
11267 {
11268 .cmd = NL80211_CMD_SET_MPATH,
11269 .doit = nl80211_set_mpath,
11270 .policy = nl80211_policy,
11271 .flags = GENL_UNS_ADMIN_PERM,
11272 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11273 NL80211_FLAG_NEED_RTNL,
11274 },
11275 {
11276 .cmd = NL80211_CMD_NEW_MPATH,
11277 .doit = nl80211_new_mpath,
11278 .policy = nl80211_policy,
11279 .flags = GENL_UNS_ADMIN_PERM,
11280 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11281 NL80211_FLAG_NEED_RTNL,
11282 },
11283 {
11284 .cmd = NL80211_CMD_DEL_MPATH,
11285 .doit = nl80211_del_mpath,
11286 .policy = nl80211_policy,
11287 .flags = GENL_UNS_ADMIN_PERM,
11288 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11289 NL80211_FLAG_NEED_RTNL,
11290 },
11291 {
11292 .cmd = NL80211_CMD_SET_BSS,
11293 .doit = nl80211_set_bss,
11294 .policy = nl80211_policy,
11295 .flags = GENL_UNS_ADMIN_PERM,
11296 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11297 NL80211_FLAG_NEED_RTNL,
11298 },
11299 {
11300 .cmd = NL80211_CMD_GET_REG,
11301 .doit = nl80211_get_reg_do,
11302 .dumpit = nl80211_get_reg_dump,
11303 .policy = nl80211_policy,
11304 .internal_flags = NL80211_FLAG_NEED_RTNL,
11305 /* can be retrieved by unprivileged users */
11306 },
11307 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
11308 {
11309 .cmd = NL80211_CMD_SET_REG,
11310 .doit = nl80211_set_reg,
11311 .policy = nl80211_policy,
11312 .flags = GENL_ADMIN_PERM,
11313 .internal_flags = NL80211_FLAG_NEED_RTNL,
11314 },
11315 #endif
11316 {
11317 .cmd = NL80211_CMD_REQ_SET_REG,
11318 .doit = nl80211_req_set_reg,
11319 .policy = nl80211_policy,
11320 .flags = GENL_ADMIN_PERM,
11321 },
11322 {
11323 .cmd = NL80211_CMD_GET_MESH_CONFIG,
11324 .doit = nl80211_get_mesh_config,
11325 .policy = nl80211_policy,
11326 /* can be retrieved by unprivileged users */
11327 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11328 NL80211_FLAG_NEED_RTNL,
11329 },
11330 {
11331 .cmd = NL80211_CMD_SET_MESH_CONFIG,
11332 .doit = nl80211_update_mesh_config,
11333 .policy = nl80211_policy,
11334 .flags = GENL_UNS_ADMIN_PERM,
11335 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11336 NL80211_FLAG_NEED_RTNL,
11337 },
11338 {
11339 .cmd = NL80211_CMD_TRIGGER_SCAN,
11340 .doit = nl80211_trigger_scan,
11341 .policy = nl80211_policy,
11342 .flags = GENL_UNS_ADMIN_PERM,
11343 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11344 NL80211_FLAG_NEED_RTNL,
11345 },
11346 {
11347 .cmd = NL80211_CMD_ABORT_SCAN,
11348 .doit = nl80211_abort_scan,
11349 .policy = nl80211_policy,
11350 .flags = GENL_UNS_ADMIN_PERM,
11351 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11352 NL80211_FLAG_NEED_RTNL,
11353 },
11354 {
11355 .cmd = NL80211_CMD_GET_SCAN,
11356 .policy = nl80211_policy,
11357 .dumpit = nl80211_dump_scan,
11358 },
11359 {
11360 .cmd = NL80211_CMD_START_SCHED_SCAN,
11361 .doit = nl80211_start_sched_scan,
11362 .policy = nl80211_policy,
11363 .flags = GENL_UNS_ADMIN_PERM,
11364 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11365 NL80211_FLAG_NEED_RTNL,
11366 },
11367 {
11368 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11369 .doit = nl80211_stop_sched_scan,
11370 .policy = nl80211_policy,
11371 .flags = GENL_UNS_ADMIN_PERM,
11372 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11373 NL80211_FLAG_NEED_RTNL,
11374 },
11375 {
11376 .cmd = NL80211_CMD_AUTHENTICATE,
11377 .doit = nl80211_authenticate,
11378 .policy = nl80211_policy,
11379 .flags = GENL_UNS_ADMIN_PERM,
11380 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11381 NL80211_FLAG_NEED_RTNL |
11382 NL80211_FLAG_CLEAR_SKB,
11383 },
11384 {
11385 .cmd = NL80211_CMD_ASSOCIATE,
11386 .doit = nl80211_associate,
11387 .policy = nl80211_policy,
11388 .flags = GENL_UNS_ADMIN_PERM,
11389 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11390 NL80211_FLAG_NEED_RTNL,
11391 },
11392 {
11393 .cmd = NL80211_CMD_DEAUTHENTICATE,
11394 .doit = nl80211_deauthenticate,
11395 .policy = nl80211_policy,
11396 .flags = GENL_UNS_ADMIN_PERM,
11397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11398 NL80211_FLAG_NEED_RTNL,
11399 },
11400 {
11401 .cmd = NL80211_CMD_DISASSOCIATE,
11402 .doit = nl80211_disassociate,
11403 .policy = nl80211_policy,
11404 .flags = GENL_UNS_ADMIN_PERM,
11405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11406 NL80211_FLAG_NEED_RTNL,
11407 },
11408 {
11409 .cmd = NL80211_CMD_JOIN_IBSS,
11410 .doit = nl80211_join_ibss,
11411 .policy = nl80211_policy,
11412 .flags = GENL_UNS_ADMIN_PERM,
11413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11414 NL80211_FLAG_NEED_RTNL,
11415 },
11416 {
11417 .cmd = NL80211_CMD_LEAVE_IBSS,
11418 .doit = nl80211_leave_ibss,
11419 .policy = nl80211_policy,
11420 .flags = GENL_UNS_ADMIN_PERM,
11421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11422 NL80211_FLAG_NEED_RTNL,
11423 },
11424 #ifdef CONFIG_NL80211_TESTMODE
11425 {
11426 .cmd = NL80211_CMD_TESTMODE,
11427 .doit = nl80211_testmode_do,
11428 .dumpit = nl80211_testmode_dump,
11429 .policy = nl80211_policy,
11430 .flags = GENL_UNS_ADMIN_PERM,
11431 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11432 NL80211_FLAG_NEED_RTNL,
11433 },
11434 #endif
11435 {
11436 .cmd = NL80211_CMD_CONNECT,
11437 .doit = nl80211_connect,
11438 .policy = nl80211_policy,
11439 .flags = GENL_UNS_ADMIN_PERM,
11440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11441 NL80211_FLAG_NEED_RTNL,
11442 },
11443 {
11444 .cmd = NL80211_CMD_DISCONNECT,
11445 .doit = nl80211_disconnect,
11446 .policy = nl80211_policy,
11447 .flags = GENL_UNS_ADMIN_PERM,
11448 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11449 NL80211_FLAG_NEED_RTNL,
11450 },
11451 {
11452 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11453 .doit = nl80211_wiphy_netns,
11454 .policy = nl80211_policy,
11455 .flags = GENL_UNS_ADMIN_PERM,
11456 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11457 NL80211_FLAG_NEED_RTNL,
11458 },
11459 {
11460 .cmd = NL80211_CMD_GET_SURVEY,
11461 .policy = nl80211_policy,
11462 .dumpit = nl80211_dump_survey,
11463 },
11464 {
11465 .cmd = NL80211_CMD_SET_PMKSA,
11466 .doit = nl80211_setdel_pmksa,
11467 .policy = nl80211_policy,
11468 .flags = GENL_UNS_ADMIN_PERM,
11469 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11470 NL80211_FLAG_NEED_RTNL,
11471 },
11472 {
11473 .cmd = NL80211_CMD_DEL_PMKSA,
11474 .doit = nl80211_setdel_pmksa,
11475 .policy = nl80211_policy,
11476 .flags = GENL_UNS_ADMIN_PERM,
11477 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11478 NL80211_FLAG_NEED_RTNL,
11479 },
11480 {
11481 .cmd = NL80211_CMD_FLUSH_PMKSA,
11482 .doit = nl80211_flush_pmksa,
11483 .policy = nl80211_policy,
11484 .flags = GENL_UNS_ADMIN_PERM,
11485 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11486 NL80211_FLAG_NEED_RTNL,
11487 },
11488 {
11489 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11490 .doit = nl80211_remain_on_channel,
11491 .policy = nl80211_policy,
11492 .flags = GENL_UNS_ADMIN_PERM,
11493 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11494 NL80211_FLAG_NEED_RTNL,
11495 },
11496 {
11497 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11498 .doit = nl80211_cancel_remain_on_channel,
11499 .policy = nl80211_policy,
11500 .flags = GENL_UNS_ADMIN_PERM,
11501 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11502 NL80211_FLAG_NEED_RTNL,
11503 },
11504 {
11505 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11506 .doit = nl80211_set_tx_bitrate_mask,
11507 .policy = nl80211_policy,
11508 .flags = GENL_UNS_ADMIN_PERM,
11509 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11510 NL80211_FLAG_NEED_RTNL,
11511 },
11512 {
11513 .cmd = NL80211_CMD_REGISTER_FRAME,
11514 .doit = nl80211_register_mgmt,
11515 .policy = nl80211_policy,
11516 .flags = GENL_UNS_ADMIN_PERM,
11517 .internal_flags = NL80211_FLAG_NEED_WDEV |
11518 NL80211_FLAG_NEED_RTNL,
11519 },
11520 {
11521 .cmd = NL80211_CMD_FRAME,
11522 .doit = nl80211_tx_mgmt,
11523 .policy = nl80211_policy,
11524 .flags = GENL_UNS_ADMIN_PERM,
11525 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11526 NL80211_FLAG_NEED_RTNL,
11527 },
11528 {
11529 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11530 .doit = nl80211_tx_mgmt_cancel_wait,
11531 .policy = nl80211_policy,
11532 .flags = GENL_UNS_ADMIN_PERM,
11533 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11534 NL80211_FLAG_NEED_RTNL,
11535 },
11536 {
11537 .cmd = NL80211_CMD_SET_POWER_SAVE,
11538 .doit = nl80211_set_power_save,
11539 .policy = nl80211_policy,
11540 .flags = GENL_UNS_ADMIN_PERM,
11541 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11542 NL80211_FLAG_NEED_RTNL,
11543 },
11544 {
11545 .cmd = NL80211_CMD_GET_POWER_SAVE,
11546 .doit = nl80211_get_power_save,
11547 .policy = nl80211_policy,
11548 /* can be retrieved by unprivileged users */
11549 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11550 NL80211_FLAG_NEED_RTNL,
11551 },
11552 {
11553 .cmd = NL80211_CMD_SET_CQM,
11554 .doit = nl80211_set_cqm,
11555 .policy = nl80211_policy,
11556 .flags = GENL_UNS_ADMIN_PERM,
11557 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11558 NL80211_FLAG_NEED_RTNL,
11559 },
11560 {
11561 .cmd = NL80211_CMD_SET_CHANNEL,
11562 .doit = nl80211_set_channel,
11563 .policy = nl80211_policy,
11564 .flags = GENL_UNS_ADMIN_PERM,
11565 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11566 NL80211_FLAG_NEED_RTNL,
11567 },
11568 {
11569 .cmd = NL80211_CMD_SET_WDS_PEER,
11570 .doit = nl80211_set_wds_peer,
11571 .policy = nl80211_policy,
11572 .flags = GENL_UNS_ADMIN_PERM,
11573 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11574 NL80211_FLAG_NEED_RTNL,
11575 },
11576 {
11577 .cmd = NL80211_CMD_JOIN_MESH,
11578 .doit = nl80211_join_mesh,
11579 .policy = nl80211_policy,
11580 .flags = GENL_UNS_ADMIN_PERM,
11581 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11582 NL80211_FLAG_NEED_RTNL,
11583 },
11584 {
11585 .cmd = NL80211_CMD_LEAVE_MESH,
11586 .doit = nl80211_leave_mesh,
11587 .policy = nl80211_policy,
11588 .flags = GENL_UNS_ADMIN_PERM,
11589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11590 NL80211_FLAG_NEED_RTNL,
11591 },
11592 {
11593 .cmd = NL80211_CMD_JOIN_OCB,
11594 .doit = nl80211_join_ocb,
11595 .policy = nl80211_policy,
11596 .flags = GENL_UNS_ADMIN_PERM,
11597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11598 NL80211_FLAG_NEED_RTNL,
11599 },
11600 {
11601 .cmd = NL80211_CMD_LEAVE_OCB,
11602 .doit = nl80211_leave_ocb,
11603 .policy = nl80211_policy,
11604 .flags = GENL_UNS_ADMIN_PERM,
11605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11606 NL80211_FLAG_NEED_RTNL,
11607 },
11608 #ifdef CONFIG_PM
11609 {
11610 .cmd = NL80211_CMD_GET_WOWLAN,
11611 .doit = nl80211_get_wowlan,
11612 .policy = nl80211_policy,
11613 /* can be retrieved by unprivileged users */
11614 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11615 NL80211_FLAG_NEED_RTNL,
11616 },
11617 {
11618 .cmd = NL80211_CMD_SET_WOWLAN,
11619 .doit = nl80211_set_wowlan,
11620 .policy = nl80211_policy,
11621 .flags = GENL_UNS_ADMIN_PERM,
11622 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11623 NL80211_FLAG_NEED_RTNL,
11624 },
11625 #endif
11626 {
11627 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11628 .doit = nl80211_set_rekey_data,
11629 .policy = nl80211_policy,
11630 .flags = GENL_UNS_ADMIN_PERM,
11631 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11632 NL80211_FLAG_NEED_RTNL |
11633 NL80211_FLAG_CLEAR_SKB,
11634 },
11635 {
11636 .cmd = NL80211_CMD_TDLS_MGMT,
11637 .doit = nl80211_tdls_mgmt,
11638 .policy = nl80211_policy,
11639 .flags = GENL_UNS_ADMIN_PERM,
11640 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11641 NL80211_FLAG_NEED_RTNL,
11642 },
11643 {
11644 .cmd = NL80211_CMD_TDLS_OPER,
11645 .doit = nl80211_tdls_oper,
11646 .policy = nl80211_policy,
11647 .flags = GENL_UNS_ADMIN_PERM,
11648 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11649 NL80211_FLAG_NEED_RTNL,
11650 },
11651 {
11652 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11653 .doit = nl80211_register_unexpected_frame,
11654 .policy = nl80211_policy,
11655 .flags = GENL_UNS_ADMIN_PERM,
11656 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11657 NL80211_FLAG_NEED_RTNL,
11658 },
11659 {
11660 .cmd = NL80211_CMD_PROBE_CLIENT,
11661 .doit = nl80211_probe_client,
11662 .policy = nl80211_policy,
11663 .flags = GENL_UNS_ADMIN_PERM,
11664 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11665 NL80211_FLAG_NEED_RTNL,
11666 },
11667 {
11668 .cmd = NL80211_CMD_REGISTER_BEACONS,
11669 .doit = nl80211_register_beacons,
11670 .policy = nl80211_policy,
11671 .flags = GENL_UNS_ADMIN_PERM,
11672 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11673 NL80211_FLAG_NEED_RTNL,
11674 },
11675 {
11676 .cmd = NL80211_CMD_SET_NOACK_MAP,
11677 .doit = nl80211_set_noack_map,
11678 .policy = nl80211_policy,
11679 .flags = GENL_UNS_ADMIN_PERM,
11680 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11681 NL80211_FLAG_NEED_RTNL,
11682 },
11683 {
11684 .cmd = NL80211_CMD_START_P2P_DEVICE,
11685 .doit = nl80211_start_p2p_device,
11686 .policy = nl80211_policy,
11687 .flags = GENL_UNS_ADMIN_PERM,
11688 .internal_flags = NL80211_FLAG_NEED_WDEV |
11689 NL80211_FLAG_NEED_RTNL,
11690 },
11691 {
11692 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11693 .doit = nl80211_stop_p2p_device,
11694 .policy = nl80211_policy,
11695 .flags = GENL_UNS_ADMIN_PERM,
11696 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11697 NL80211_FLAG_NEED_RTNL,
11698 },
11699 {
11700 .cmd = NL80211_CMD_SET_MCAST_RATE,
11701 .doit = nl80211_set_mcast_rate,
11702 .policy = nl80211_policy,
11703 .flags = GENL_UNS_ADMIN_PERM,
11704 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11705 NL80211_FLAG_NEED_RTNL,
11706 },
11707 {
11708 .cmd = NL80211_CMD_SET_MAC_ACL,
11709 .doit = nl80211_set_mac_acl,
11710 .policy = nl80211_policy,
11711 .flags = GENL_UNS_ADMIN_PERM,
11712 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11713 NL80211_FLAG_NEED_RTNL,
11714 },
11715 {
11716 .cmd = NL80211_CMD_RADAR_DETECT,
11717 .doit = nl80211_start_radar_detection,
11718 .policy = nl80211_policy,
11719 .flags = GENL_UNS_ADMIN_PERM,
11720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11721 NL80211_FLAG_NEED_RTNL,
11722 },
11723 {
11724 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11725 .doit = nl80211_get_protocol_features,
11726 .policy = nl80211_policy,
11727 },
11728 {
11729 .cmd = NL80211_CMD_UPDATE_FT_IES,
11730 .doit = nl80211_update_ft_ies,
11731 .policy = nl80211_policy,
11732 .flags = GENL_UNS_ADMIN_PERM,
11733 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11734 NL80211_FLAG_NEED_RTNL,
11735 },
11736 {
11737 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11738 .doit = nl80211_crit_protocol_start,
11739 .policy = nl80211_policy,
11740 .flags = GENL_UNS_ADMIN_PERM,
11741 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11742 NL80211_FLAG_NEED_RTNL,
11743 },
11744 {
11745 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11746 .doit = nl80211_crit_protocol_stop,
11747 .policy = nl80211_policy,
11748 .flags = GENL_UNS_ADMIN_PERM,
11749 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11750 NL80211_FLAG_NEED_RTNL,
11751 },
11752 {
11753 .cmd = NL80211_CMD_GET_COALESCE,
11754 .doit = nl80211_get_coalesce,
11755 .policy = nl80211_policy,
11756 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11757 NL80211_FLAG_NEED_RTNL,
11758 },
11759 {
11760 .cmd = NL80211_CMD_SET_COALESCE,
11761 .doit = nl80211_set_coalesce,
11762 .policy = nl80211_policy,
11763 .flags = GENL_UNS_ADMIN_PERM,
11764 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11765 NL80211_FLAG_NEED_RTNL,
11766 },
11767 {
11768 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11769 .doit = nl80211_channel_switch,
11770 .policy = nl80211_policy,
11771 .flags = GENL_UNS_ADMIN_PERM,
11772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11773 NL80211_FLAG_NEED_RTNL,
11774 },
11775 {
11776 .cmd = NL80211_CMD_VENDOR,
11777 .doit = nl80211_vendor_cmd,
11778 .dumpit = nl80211_vendor_cmd_dump,
11779 .policy = nl80211_policy,
11780 .flags = GENL_UNS_ADMIN_PERM,
11781 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11782 NL80211_FLAG_NEED_RTNL,
11783 },
11784 {
11785 .cmd = NL80211_CMD_SET_QOS_MAP,
11786 .doit = nl80211_set_qos_map,
11787 .policy = nl80211_policy,
11788 .flags = GENL_UNS_ADMIN_PERM,
11789 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11790 NL80211_FLAG_NEED_RTNL,
11791 },
11792 {
11793 .cmd = NL80211_CMD_ADD_TX_TS,
11794 .doit = nl80211_add_tx_ts,
11795 .policy = nl80211_policy,
11796 .flags = GENL_UNS_ADMIN_PERM,
11797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11798 NL80211_FLAG_NEED_RTNL,
11799 },
11800 {
11801 .cmd = NL80211_CMD_DEL_TX_TS,
11802 .doit = nl80211_del_tx_ts,
11803 .policy = nl80211_policy,
11804 .flags = GENL_UNS_ADMIN_PERM,
11805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11806 NL80211_FLAG_NEED_RTNL,
11807 },
11808 {
11809 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11810 .doit = nl80211_tdls_channel_switch,
11811 .policy = nl80211_policy,
11812 .flags = GENL_UNS_ADMIN_PERM,
11813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11814 NL80211_FLAG_NEED_RTNL,
11815 },
11816 {
11817 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11818 .doit = nl80211_tdls_cancel_channel_switch,
11819 .policy = nl80211_policy,
11820 .flags = GENL_UNS_ADMIN_PERM,
11821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11822 NL80211_FLAG_NEED_RTNL,
11823 },
11824 };
11825
11826 /* notification functions */
11827
11828 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11829 enum nl80211_commands cmd)
11830 {
11831 struct sk_buff *msg;
11832 struct nl80211_dump_wiphy_state state = {};
11833
11834 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11835 cmd != NL80211_CMD_DEL_WIPHY);
11836
11837 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11838 if (!msg)
11839 return;
11840
11841 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11842 nlmsg_free(msg);
11843 return;
11844 }
11845
11846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11847 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11848 }
11849
11850 static int nl80211_add_scan_req(struct sk_buff *msg,
11851 struct cfg80211_registered_device *rdev)
11852 {
11853 struct cfg80211_scan_request *req = rdev->scan_req;
11854 struct nlattr *nest;
11855 int i;
11856
11857 if (WARN_ON(!req))
11858 return 0;
11859
11860 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11861 if (!nest)
11862 goto nla_put_failure;
11863 for (i = 0; i < req->n_ssids; i++) {
11864 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11865 goto nla_put_failure;
11866 }
11867 nla_nest_end(msg, nest);
11868
11869 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11870 if (!nest)
11871 goto nla_put_failure;
11872 for (i = 0; i < req->n_channels; i++) {
11873 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11874 goto nla_put_failure;
11875 }
11876 nla_nest_end(msg, nest);
11877
11878 if (req->ie &&
11879 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11880 goto nla_put_failure;
11881
11882 if (req->flags &&
11883 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11884 goto nla_put_failure;
11885
11886 if (req->info.scan_start_tsf &&
11887 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
11888 req->info.scan_start_tsf, NL80211_BSS_PAD) ||
11889 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
11890 req->info.tsf_bssid)))
11891 goto nla_put_failure;
11892
11893 return 0;
11894 nla_put_failure:
11895 return -ENOBUFS;
11896 }
11897
11898 static int nl80211_send_scan_msg(struct sk_buff *msg,
11899 struct cfg80211_registered_device *rdev,
11900 struct wireless_dev *wdev,
11901 u32 portid, u32 seq, int flags,
11902 u32 cmd)
11903 {
11904 void *hdr;
11905
11906 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11907 if (!hdr)
11908 return -1;
11909
11910 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11911 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11912 wdev->netdev->ifindex)) ||
11913 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
11914 NL80211_ATTR_PAD))
11915 goto nla_put_failure;
11916
11917 /* ignore errors and send incomplete event anyway */
11918 nl80211_add_scan_req(msg, rdev);
11919
11920 genlmsg_end(msg, hdr);
11921 return 0;
11922
11923 nla_put_failure:
11924 genlmsg_cancel(msg, hdr);
11925 return -EMSGSIZE;
11926 }
11927
11928 static int
11929 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11930 struct cfg80211_registered_device *rdev,
11931 struct net_device *netdev,
11932 u32 portid, u32 seq, int flags, u32 cmd)
11933 {
11934 void *hdr;
11935
11936 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11937 if (!hdr)
11938 return -1;
11939
11940 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11941 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11942 goto nla_put_failure;
11943
11944 genlmsg_end(msg, hdr);
11945 return 0;
11946
11947 nla_put_failure:
11948 genlmsg_cancel(msg, hdr);
11949 return -EMSGSIZE;
11950 }
11951
11952 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11953 struct wireless_dev *wdev)
11954 {
11955 struct sk_buff *msg;
11956
11957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11958 if (!msg)
11959 return;
11960
11961 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11962 NL80211_CMD_TRIGGER_SCAN) < 0) {
11963 nlmsg_free(msg);
11964 return;
11965 }
11966
11967 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11968 NL80211_MCGRP_SCAN, GFP_KERNEL);
11969 }
11970
11971 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11972 struct wireless_dev *wdev, bool aborted)
11973 {
11974 struct sk_buff *msg;
11975
11976 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11977 if (!msg)
11978 return NULL;
11979
11980 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11981 aborted ? NL80211_CMD_SCAN_ABORTED :
11982 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11983 nlmsg_free(msg);
11984 return NULL;
11985 }
11986
11987 return msg;
11988 }
11989
11990 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11991 struct sk_buff *msg)
11992 {
11993 if (!msg)
11994 return;
11995
11996 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11997 NL80211_MCGRP_SCAN, GFP_KERNEL);
11998 }
11999
12000 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
12001 struct net_device *netdev)
12002 {
12003 struct sk_buff *msg;
12004
12005 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12006 if (!msg)
12007 return;
12008
12009 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
12010 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
12011 nlmsg_free(msg);
12012 return;
12013 }
12014
12015 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12016 NL80211_MCGRP_SCAN, GFP_KERNEL);
12017 }
12018
12019 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
12020 struct net_device *netdev, u32 cmd)
12021 {
12022 struct sk_buff *msg;
12023
12024 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12025 if (!msg)
12026 return;
12027
12028 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
12029 nlmsg_free(msg);
12030 return;
12031 }
12032
12033 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12034 NL80211_MCGRP_SCAN, GFP_KERNEL);
12035 }
12036
12037 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
12038 struct regulatory_request *request)
12039 {
12040 /* Userspace can always count this one always being set */
12041 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
12042 goto nla_put_failure;
12043
12044 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
12045 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12046 NL80211_REGDOM_TYPE_WORLD))
12047 goto nla_put_failure;
12048 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
12049 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12050 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
12051 goto nla_put_failure;
12052 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
12053 request->intersect) {
12054 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12055 NL80211_REGDOM_TYPE_INTERSECTION))
12056 goto nla_put_failure;
12057 } else {
12058 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
12059 NL80211_REGDOM_TYPE_COUNTRY) ||
12060 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
12061 request->alpha2))
12062 goto nla_put_failure;
12063 }
12064
12065 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
12066 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
12067
12068 if (wiphy &&
12069 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
12070 goto nla_put_failure;
12071
12072 if (wiphy &&
12073 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
12074 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
12075 goto nla_put_failure;
12076 }
12077
12078 return true;
12079
12080 nla_put_failure:
12081 return false;
12082 }
12083
12084 /*
12085 * This can happen on global regulatory changes or device specific settings
12086 * based on custom regulatory domains.
12087 */
12088 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
12089 struct regulatory_request *request)
12090 {
12091 struct sk_buff *msg;
12092 void *hdr;
12093
12094 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12095 if (!msg)
12096 return;
12097
12098 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
12099 if (!hdr) {
12100 nlmsg_free(msg);
12101 return;
12102 }
12103
12104 if (nl80211_reg_change_event_fill(msg, request) == false)
12105 goto nla_put_failure;
12106
12107 genlmsg_end(msg, hdr);
12108
12109 rcu_read_lock();
12110 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12111 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12112 rcu_read_unlock();
12113
12114 return;
12115
12116 nla_put_failure:
12117 genlmsg_cancel(msg, hdr);
12118 nlmsg_free(msg);
12119 }
12120
12121 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
12122 struct net_device *netdev,
12123 const u8 *buf, size_t len,
12124 enum nl80211_commands cmd, gfp_t gfp,
12125 int uapsd_queues)
12126 {
12127 struct sk_buff *msg;
12128 void *hdr;
12129
12130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12131 if (!msg)
12132 return;
12133
12134 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12135 if (!hdr) {
12136 nlmsg_free(msg);
12137 return;
12138 }
12139
12140 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12141 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12142 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
12143 goto nla_put_failure;
12144
12145 if (uapsd_queues >= 0) {
12146 struct nlattr *nla_wmm =
12147 nla_nest_start(msg, NL80211_ATTR_STA_WME);
12148 if (!nla_wmm)
12149 goto nla_put_failure;
12150
12151 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
12152 uapsd_queues))
12153 goto nla_put_failure;
12154
12155 nla_nest_end(msg, nla_wmm);
12156 }
12157
12158 genlmsg_end(msg, hdr);
12159
12160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12161 NL80211_MCGRP_MLME, gfp);
12162 return;
12163
12164 nla_put_failure:
12165 genlmsg_cancel(msg, hdr);
12166 nlmsg_free(msg);
12167 }
12168
12169 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
12170 struct net_device *netdev, const u8 *buf,
12171 size_t len, gfp_t gfp)
12172 {
12173 nl80211_send_mlme_event(rdev, netdev, buf, len,
12174 NL80211_CMD_AUTHENTICATE, gfp, -1);
12175 }
12176
12177 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
12178 struct net_device *netdev, const u8 *buf,
12179 size_t len, gfp_t gfp, int uapsd_queues)
12180 {
12181 nl80211_send_mlme_event(rdev, netdev, buf, len,
12182 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
12183 }
12184
12185 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
12186 struct net_device *netdev, const u8 *buf,
12187 size_t len, gfp_t gfp)
12188 {
12189 nl80211_send_mlme_event(rdev, netdev, buf, len,
12190 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
12191 }
12192
12193 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
12194 struct net_device *netdev, const u8 *buf,
12195 size_t len, gfp_t gfp)
12196 {
12197 nl80211_send_mlme_event(rdev, netdev, buf, len,
12198 NL80211_CMD_DISASSOCIATE, gfp, -1);
12199 }
12200
12201 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
12202 size_t len)
12203 {
12204 struct wireless_dev *wdev = dev->ieee80211_ptr;
12205 struct wiphy *wiphy = wdev->wiphy;
12206 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12207 const struct ieee80211_mgmt *mgmt = (void *)buf;
12208 u32 cmd;
12209
12210 if (WARN_ON(len < 2))
12211 return;
12212
12213 if (ieee80211_is_deauth(mgmt->frame_control))
12214 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
12215 else
12216 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
12217
12218 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
12219 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
12220 }
12221 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
12222
12223 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
12224 struct net_device *netdev, int cmd,
12225 const u8 *addr, gfp_t gfp)
12226 {
12227 struct sk_buff *msg;
12228 void *hdr;
12229
12230 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12231 if (!msg)
12232 return;
12233
12234 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12235 if (!hdr) {
12236 nlmsg_free(msg);
12237 return;
12238 }
12239
12240 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12241 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12242 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
12243 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12244 goto nla_put_failure;
12245
12246 genlmsg_end(msg, hdr);
12247
12248 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12249 NL80211_MCGRP_MLME, gfp);
12250 return;
12251
12252 nla_put_failure:
12253 genlmsg_cancel(msg, hdr);
12254 nlmsg_free(msg);
12255 }
12256
12257 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
12258 struct net_device *netdev, const u8 *addr,
12259 gfp_t gfp)
12260 {
12261 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
12262 addr, gfp);
12263 }
12264
12265 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
12266 struct net_device *netdev, const u8 *addr,
12267 gfp_t gfp)
12268 {
12269 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
12270 addr, gfp);
12271 }
12272
12273 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
12274 struct net_device *netdev, const u8 *bssid,
12275 const u8 *req_ie, size_t req_ie_len,
12276 const u8 *resp_ie, size_t resp_ie_len,
12277 int status, gfp_t gfp)
12278 {
12279 struct sk_buff *msg;
12280 void *hdr;
12281
12282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12283 if (!msg)
12284 return;
12285
12286 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
12287 if (!hdr) {
12288 nlmsg_free(msg);
12289 return;
12290 }
12291
12292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12294 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
12295 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
12296 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
12297 status) ||
12298 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) ||
12299 (req_ie &&
12300 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12301 (resp_ie &&
12302 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12303 goto nla_put_failure;
12304
12305 genlmsg_end(msg, hdr);
12306
12307 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12308 NL80211_MCGRP_MLME, gfp);
12309 return;
12310
12311 nla_put_failure:
12312 genlmsg_cancel(msg, hdr);
12313 nlmsg_free(msg);
12314 }
12315
12316 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
12317 struct net_device *netdev, const u8 *bssid,
12318 const u8 *req_ie, size_t req_ie_len,
12319 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
12320 {
12321 struct sk_buff *msg;
12322 void *hdr;
12323
12324 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12325 if (!msg)
12326 return;
12327
12328 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
12329 if (!hdr) {
12330 nlmsg_free(msg);
12331 return;
12332 }
12333
12334 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12335 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12336 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
12337 (req_ie &&
12338 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
12339 (resp_ie &&
12340 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
12341 goto nla_put_failure;
12342
12343 genlmsg_end(msg, hdr);
12344
12345 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12346 NL80211_MCGRP_MLME, gfp);
12347 return;
12348
12349 nla_put_failure:
12350 genlmsg_cancel(msg, hdr);
12351 nlmsg_free(msg);
12352 }
12353
12354 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
12355 struct net_device *netdev, u16 reason,
12356 const u8 *ie, size_t ie_len, bool from_ap)
12357 {
12358 struct sk_buff *msg;
12359 void *hdr;
12360
12361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12362 if (!msg)
12363 return;
12364
12365 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
12366 if (!hdr) {
12367 nlmsg_free(msg);
12368 return;
12369 }
12370
12371 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12372 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12373 (from_ap && reason &&
12374 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12375 (from_ap &&
12376 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12377 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12378 goto nla_put_failure;
12379
12380 genlmsg_end(msg, hdr);
12381
12382 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12383 NL80211_MCGRP_MLME, GFP_KERNEL);
12384 return;
12385
12386 nla_put_failure:
12387 genlmsg_cancel(msg, hdr);
12388 nlmsg_free(msg);
12389 }
12390
12391 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12392 struct net_device *netdev, const u8 *bssid,
12393 gfp_t gfp)
12394 {
12395 struct sk_buff *msg;
12396 void *hdr;
12397
12398 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12399 if (!msg)
12400 return;
12401
12402 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12403 if (!hdr) {
12404 nlmsg_free(msg);
12405 return;
12406 }
12407
12408 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12409 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12410 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12411 goto nla_put_failure;
12412
12413 genlmsg_end(msg, hdr);
12414
12415 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12416 NL80211_MCGRP_MLME, gfp);
12417 return;
12418
12419 nla_put_failure:
12420 genlmsg_cancel(msg, hdr);
12421 nlmsg_free(msg);
12422 }
12423
12424 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12425 const u8* ie, u8 ie_len, gfp_t gfp)
12426 {
12427 struct wireless_dev *wdev = dev->ieee80211_ptr;
12428 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12429 struct sk_buff *msg;
12430 void *hdr;
12431
12432 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12433 return;
12434
12435 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12436
12437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12438 if (!msg)
12439 return;
12440
12441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12442 if (!hdr) {
12443 nlmsg_free(msg);
12444 return;
12445 }
12446
12447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12448 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12449 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12450 (ie_len && ie &&
12451 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12452 goto nla_put_failure;
12453
12454 genlmsg_end(msg, hdr);
12455
12456 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12457 NL80211_MCGRP_MLME, gfp);
12458 return;
12459
12460 nla_put_failure:
12461 genlmsg_cancel(msg, hdr);
12462 nlmsg_free(msg);
12463 }
12464 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12465
12466 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12467 struct net_device *netdev, const u8 *addr,
12468 enum nl80211_key_type key_type, int key_id,
12469 const u8 *tsc, gfp_t gfp)
12470 {
12471 struct sk_buff *msg;
12472 void *hdr;
12473
12474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12475 if (!msg)
12476 return;
12477
12478 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12479 if (!hdr) {
12480 nlmsg_free(msg);
12481 return;
12482 }
12483
12484 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12485 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12486 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12487 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12488 (key_id != -1 &&
12489 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12490 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12491 goto nla_put_failure;
12492
12493 genlmsg_end(msg, hdr);
12494
12495 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12496 NL80211_MCGRP_MLME, gfp);
12497 return;
12498
12499 nla_put_failure:
12500 genlmsg_cancel(msg, hdr);
12501 nlmsg_free(msg);
12502 }
12503
12504 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12505 struct ieee80211_channel *channel_before,
12506 struct ieee80211_channel *channel_after)
12507 {
12508 struct sk_buff *msg;
12509 void *hdr;
12510 struct nlattr *nl_freq;
12511
12512 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12513 if (!msg)
12514 return;
12515
12516 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12517 if (!hdr) {
12518 nlmsg_free(msg);
12519 return;
12520 }
12521
12522 /*
12523 * Since we are applying the beacon hint to a wiphy we know its
12524 * wiphy_idx is valid
12525 */
12526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12527 goto nla_put_failure;
12528
12529 /* Before */
12530 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12531 if (!nl_freq)
12532 goto nla_put_failure;
12533 if (nl80211_msg_put_channel(msg, channel_before, false))
12534 goto nla_put_failure;
12535 nla_nest_end(msg, nl_freq);
12536
12537 /* After */
12538 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12539 if (!nl_freq)
12540 goto nla_put_failure;
12541 if (nl80211_msg_put_channel(msg, channel_after, false))
12542 goto nla_put_failure;
12543 nla_nest_end(msg, nl_freq);
12544
12545 genlmsg_end(msg, hdr);
12546
12547 rcu_read_lock();
12548 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12549 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12550 rcu_read_unlock();
12551
12552 return;
12553
12554 nla_put_failure:
12555 genlmsg_cancel(msg, hdr);
12556 nlmsg_free(msg);
12557 }
12558
12559 static void nl80211_send_remain_on_chan_event(
12560 int cmd, struct cfg80211_registered_device *rdev,
12561 struct wireless_dev *wdev, u64 cookie,
12562 struct ieee80211_channel *chan,
12563 unsigned int duration, gfp_t gfp)
12564 {
12565 struct sk_buff *msg;
12566 void *hdr;
12567
12568 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12569 if (!msg)
12570 return;
12571
12572 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12573 if (!hdr) {
12574 nlmsg_free(msg);
12575 return;
12576 }
12577
12578 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12579 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12580 wdev->netdev->ifindex)) ||
12581 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12582 NL80211_ATTR_PAD) ||
12583 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12584 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12585 NL80211_CHAN_NO_HT) ||
12586 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12587 NL80211_ATTR_PAD))
12588 goto nla_put_failure;
12589
12590 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12591 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12592 goto nla_put_failure;
12593
12594 genlmsg_end(msg, hdr);
12595
12596 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12597 NL80211_MCGRP_MLME, gfp);
12598 return;
12599
12600 nla_put_failure:
12601 genlmsg_cancel(msg, hdr);
12602 nlmsg_free(msg);
12603 }
12604
12605 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12606 struct ieee80211_channel *chan,
12607 unsigned int duration, gfp_t gfp)
12608 {
12609 struct wiphy *wiphy = wdev->wiphy;
12610 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12611
12612 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12613 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12614 rdev, wdev, cookie, chan,
12615 duration, gfp);
12616 }
12617 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12618
12619 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12620 struct ieee80211_channel *chan,
12621 gfp_t gfp)
12622 {
12623 struct wiphy *wiphy = wdev->wiphy;
12624 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12625
12626 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12627 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12628 rdev, wdev, cookie, chan, 0, gfp);
12629 }
12630 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12631
12632 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12633 struct station_info *sinfo, gfp_t gfp)
12634 {
12635 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12636 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12637 struct sk_buff *msg;
12638
12639 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12640
12641 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12642 if (!msg)
12643 return;
12644
12645 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12646 rdev, dev, mac_addr, sinfo) < 0) {
12647 nlmsg_free(msg);
12648 return;
12649 }
12650
12651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12652 NL80211_MCGRP_MLME, gfp);
12653 }
12654 EXPORT_SYMBOL(cfg80211_new_sta);
12655
12656 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12657 struct station_info *sinfo, gfp_t gfp)
12658 {
12659 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12660 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12661 struct sk_buff *msg;
12662 struct station_info empty_sinfo = {};
12663
12664 if (!sinfo)
12665 sinfo = &empty_sinfo;
12666
12667 trace_cfg80211_del_sta(dev, mac_addr);
12668
12669 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12670 if (!msg)
12671 return;
12672
12673 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12674 rdev, dev, mac_addr, sinfo) < 0) {
12675 nlmsg_free(msg);
12676 return;
12677 }
12678
12679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12680 NL80211_MCGRP_MLME, gfp);
12681 }
12682 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12683
12684 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12685 enum nl80211_connect_failed_reason reason,
12686 gfp_t gfp)
12687 {
12688 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12689 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12690 struct sk_buff *msg;
12691 void *hdr;
12692
12693 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12694 if (!msg)
12695 return;
12696
12697 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12698 if (!hdr) {
12699 nlmsg_free(msg);
12700 return;
12701 }
12702
12703 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12704 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12705 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12706 goto nla_put_failure;
12707
12708 genlmsg_end(msg, hdr);
12709
12710 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12711 NL80211_MCGRP_MLME, gfp);
12712 return;
12713
12714 nla_put_failure:
12715 genlmsg_cancel(msg, hdr);
12716 nlmsg_free(msg);
12717 }
12718 EXPORT_SYMBOL(cfg80211_conn_failed);
12719
12720 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12721 const u8 *addr, gfp_t gfp)
12722 {
12723 struct wireless_dev *wdev = dev->ieee80211_ptr;
12724 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12725 struct sk_buff *msg;
12726 void *hdr;
12727 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12728
12729 if (!nlportid)
12730 return false;
12731
12732 msg = nlmsg_new(100, gfp);
12733 if (!msg)
12734 return true;
12735
12736 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12737 if (!hdr) {
12738 nlmsg_free(msg);
12739 return true;
12740 }
12741
12742 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12743 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12744 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12745 goto nla_put_failure;
12746
12747 genlmsg_end(msg, hdr);
12748 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12749 return true;
12750
12751 nla_put_failure:
12752 genlmsg_cancel(msg, hdr);
12753 nlmsg_free(msg);
12754 return true;
12755 }
12756
12757 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12758 const u8 *addr, gfp_t gfp)
12759 {
12760 struct wireless_dev *wdev = dev->ieee80211_ptr;
12761 bool ret;
12762
12763 trace_cfg80211_rx_spurious_frame(dev, addr);
12764
12765 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12766 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12767 trace_cfg80211_return_bool(false);
12768 return false;
12769 }
12770 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12771 addr, gfp);
12772 trace_cfg80211_return_bool(ret);
12773 return ret;
12774 }
12775 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12776
12777 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12778 const u8 *addr, gfp_t gfp)
12779 {
12780 struct wireless_dev *wdev = dev->ieee80211_ptr;
12781 bool ret;
12782
12783 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12784
12785 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12786 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12787 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12788 trace_cfg80211_return_bool(false);
12789 return false;
12790 }
12791 ret = __nl80211_unexpected_frame(dev,
12792 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12793 addr, gfp);
12794 trace_cfg80211_return_bool(ret);
12795 return ret;
12796 }
12797 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12798
12799 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12800 struct wireless_dev *wdev, u32 nlportid,
12801 int freq, int sig_dbm,
12802 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12803 {
12804 struct net_device *netdev = wdev->netdev;
12805 struct sk_buff *msg;
12806 void *hdr;
12807
12808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12809 if (!msg)
12810 return -ENOMEM;
12811
12812 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12813 if (!hdr) {
12814 nlmsg_free(msg);
12815 return -ENOMEM;
12816 }
12817
12818 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12819 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12820 netdev->ifindex)) ||
12821 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12822 NL80211_ATTR_PAD) ||
12823 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12824 (sig_dbm &&
12825 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12826 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12827 (flags &&
12828 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12829 goto nla_put_failure;
12830
12831 genlmsg_end(msg, hdr);
12832
12833 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12834
12835 nla_put_failure:
12836 genlmsg_cancel(msg, hdr);
12837 nlmsg_free(msg);
12838 return -ENOBUFS;
12839 }
12840
12841 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12842 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12843 {
12844 struct wiphy *wiphy = wdev->wiphy;
12845 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12846 struct net_device *netdev = wdev->netdev;
12847 struct sk_buff *msg;
12848 void *hdr;
12849
12850 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12851
12852 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12853 if (!msg)
12854 return;
12855
12856 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12857 if (!hdr) {
12858 nlmsg_free(msg);
12859 return;
12860 }
12861
12862 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12863 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12864 netdev->ifindex)) ||
12865 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12866 NL80211_ATTR_PAD) ||
12867 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12868 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12869 NL80211_ATTR_PAD) ||
12870 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12871 goto nla_put_failure;
12872
12873 genlmsg_end(msg, hdr);
12874
12875 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12876 NL80211_MCGRP_MLME, gfp);
12877 return;
12878
12879 nla_put_failure:
12880 genlmsg_cancel(msg, hdr);
12881 nlmsg_free(msg);
12882 }
12883 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12884
12885 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12886 const char *mac, gfp_t gfp)
12887 {
12888 struct wireless_dev *wdev = dev->ieee80211_ptr;
12889 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12890 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12891 void **cb;
12892
12893 if (!msg)
12894 return NULL;
12895
12896 cb = (void **)msg->cb;
12897
12898 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12899 if (!cb[0]) {
12900 nlmsg_free(msg);
12901 return NULL;
12902 }
12903
12904 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12905 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12906 goto nla_put_failure;
12907
12908 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12909 goto nla_put_failure;
12910
12911 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12912 if (!cb[1])
12913 goto nla_put_failure;
12914
12915 cb[2] = rdev;
12916
12917 return msg;
12918 nla_put_failure:
12919 nlmsg_free(msg);
12920 return NULL;
12921 }
12922
12923 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12924 {
12925 void **cb = (void **)msg->cb;
12926 struct cfg80211_registered_device *rdev = cb[2];
12927
12928 nla_nest_end(msg, cb[1]);
12929 genlmsg_end(msg, cb[0]);
12930
12931 memset(msg->cb, 0, sizeof(msg->cb));
12932
12933 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12934 NL80211_MCGRP_MLME, gfp);
12935 }
12936
12937 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12938 enum nl80211_cqm_rssi_threshold_event rssi_event,
12939 gfp_t gfp)
12940 {
12941 struct sk_buff *msg;
12942
12943 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12944
12945 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12946 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12947 return;
12948
12949 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12950 if (!msg)
12951 return;
12952
12953 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12954 rssi_event))
12955 goto nla_put_failure;
12956
12957 cfg80211_send_cqm(msg, gfp);
12958
12959 return;
12960
12961 nla_put_failure:
12962 nlmsg_free(msg);
12963 }
12964 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12965
12966 void cfg80211_cqm_txe_notify(struct net_device *dev,
12967 const u8 *peer, u32 num_packets,
12968 u32 rate, u32 intvl, gfp_t gfp)
12969 {
12970 struct sk_buff *msg;
12971
12972 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12973 if (!msg)
12974 return;
12975
12976 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12977 goto nla_put_failure;
12978
12979 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12980 goto nla_put_failure;
12981
12982 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12983 goto nla_put_failure;
12984
12985 cfg80211_send_cqm(msg, gfp);
12986 return;
12987
12988 nla_put_failure:
12989 nlmsg_free(msg);
12990 }
12991 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12992
12993 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12994 const u8 *peer, u32 num_packets, gfp_t gfp)
12995 {
12996 struct sk_buff *msg;
12997
12998 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12999
13000 msg = cfg80211_prepare_cqm(dev, peer, gfp);
13001 if (!msg)
13002 return;
13003
13004 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
13005 goto nla_put_failure;
13006
13007 cfg80211_send_cqm(msg, gfp);
13008 return;
13009
13010 nla_put_failure:
13011 nlmsg_free(msg);
13012 }
13013 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
13014
13015 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
13016 {
13017 struct sk_buff *msg;
13018
13019 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
13020 if (!msg)
13021 return;
13022
13023 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
13024 goto nla_put_failure;
13025
13026 cfg80211_send_cqm(msg, gfp);
13027 return;
13028
13029 nla_put_failure:
13030 nlmsg_free(msg);
13031 }
13032 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
13033
13034 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
13035 struct net_device *netdev, const u8 *bssid,
13036 const u8 *replay_ctr, gfp_t gfp)
13037 {
13038 struct sk_buff *msg;
13039 struct nlattr *rekey_attr;
13040 void *hdr;
13041
13042 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13043 if (!msg)
13044 return;
13045
13046 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
13047 if (!hdr) {
13048 nlmsg_free(msg);
13049 return;
13050 }
13051
13052 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13053 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13054 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
13055 goto nla_put_failure;
13056
13057 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
13058 if (!rekey_attr)
13059 goto nla_put_failure;
13060
13061 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
13062 NL80211_REPLAY_CTR_LEN, replay_ctr))
13063 goto nla_put_failure;
13064
13065 nla_nest_end(msg, rekey_attr);
13066
13067 genlmsg_end(msg, hdr);
13068
13069 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13070 NL80211_MCGRP_MLME, gfp);
13071 return;
13072
13073 nla_put_failure:
13074 genlmsg_cancel(msg, hdr);
13075 nlmsg_free(msg);
13076 }
13077
13078 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
13079 const u8 *replay_ctr, gfp_t gfp)
13080 {
13081 struct wireless_dev *wdev = dev->ieee80211_ptr;
13082 struct wiphy *wiphy = wdev->wiphy;
13083 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13084
13085 trace_cfg80211_gtk_rekey_notify(dev, bssid);
13086 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
13087 }
13088 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
13089
13090 static void
13091 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
13092 struct net_device *netdev, int index,
13093 const u8 *bssid, bool preauth, gfp_t gfp)
13094 {
13095 struct sk_buff *msg;
13096 struct nlattr *attr;
13097 void *hdr;
13098
13099 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13100 if (!msg)
13101 return;
13102
13103 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
13104 if (!hdr) {
13105 nlmsg_free(msg);
13106 return;
13107 }
13108
13109 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13110 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13111 goto nla_put_failure;
13112
13113 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
13114 if (!attr)
13115 goto nla_put_failure;
13116
13117 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
13118 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
13119 (preauth &&
13120 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
13121 goto nla_put_failure;
13122
13123 nla_nest_end(msg, attr);
13124
13125 genlmsg_end(msg, hdr);
13126
13127 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13128 NL80211_MCGRP_MLME, gfp);
13129 return;
13130
13131 nla_put_failure:
13132 genlmsg_cancel(msg, hdr);
13133 nlmsg_free(msg);
13134 }
13135
13136 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
13137 const u8 *bssid, bool preauth, gfp_t gfp)
13138 {
13139 struct wireless_dev *wdev = dev->ieee80211_ptr;
13140 struct wiphy *wiphy = wdev->wiphy;
13141 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13142
13143 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
13144 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
13145 }
13146 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
13147
13148 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
13149 struct net_device *netdev,
13150 struct cfg80211_chan_def *chandef,
13151 gfp_t gfp,
13152 enum nl80211_commands notif,
13153 u8 count)
13154 {
13155 struct sk_buff *msg;
13156 void *hdr;
13157
13158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13159 if (!msg)
13160 return;
13161
13162 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
13163 if (!hdr) {
13164 nlmsg_free(msg);
13165 return;
13166 }
13167
13168 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
13169 goto nla_put_failure;
13170
13171 if (nl80211_send_chandef(msg, chandef))
13172 goto nla_put_failure;
13173
13174 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
13175 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
13176 goto nla_put_failure;
13177
13178 genlmsg_end(msg, hdr);
13179
13180 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13181 NL80211_MCGRP_MLME, gfp);
13182 return;
13183
13184 nla_put_failure:
13185 genlmsg_cancel(msg, hdr);
13186 nlmsg_free(msg);
13187 }
13188
13189 void cfg80211_ch_switch_notify(struct net_device *dev,
13190 struct cfg80211_chan_def *chandef)
13191 {
13192 struct wireless_dev *wdev = dev->ieee80211_ptr;
13193 struct wiphy *wiphy = wdev->wiphy;
13194 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13195
13196 ASSERT_WDEV_LOCK(wdev);
13197
13198 trace_cfg80211_ch_switch_notify(dev, chandef);
13199
13200 wdev->chandef = *chandef;
13201 wdev->preset_chandef = *chandef;
13202 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13203 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
13204 }
13205 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
13206
13207 void cfg80211_ch_switch_started_notify(struct net_device *dev,
13208 struct cfg80211_chan_def *chandef,
13209 u8 count)
13210 {
13211 struct wireless_dev *wdev = dev->ieee80211_ptr;
13212 struct wiphy *wiphy = wdev->wiphy;
13213 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13214
13215 trace_cfg80211_ch_switch_started_notify(dev, chandef);
13216
13217 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
13218 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
13219 }
13220 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
13221
13222 void
13223 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
13224 const struct cfg80211_chan_def *chandef,
13225 enum nl80211_radar_event event,
13226 struct net_device *netdev, gfp_t gfp)
13227 {
13228 struct sk_buff *msg;
13229 void *hdr;
13230
13231 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13232 if (!msg)
13233 return;
13234
13235 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
13236 if (!hdr) {
13237 nlmsg_free(msg);
13238 return;
13239 }
13240
13241 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
13242 goto nla_put_failure;
13243
13244 /* NOP and radar events don't need a netdev parameter */
13245 if (netdev) {
13246 struct wireless_dev *wdev = netdev->ieee80211_ptr;
13247
13248 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13249 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13250 NL80211_ATTR_PAD))
13251 goto nla_put_failure;
13252 }
13253
13254 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
13255 goto nla_put_failure;
13256
13257 if (nl80211_send_chandef(msg, chandef))
13258 goto nla_put_failure;
13259
13260 genlmsg_end(msg, hdr);
13261
13262 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13263 NL80211_MCGRP_MLME, gfp);
13264 return;
13265
13266 nla_put_failure:
13267 genlmsg_cancel(msg, hdr);
13268 nlmsg_free(msg);
13269 }
13270
13271 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
13272 u64 cookie, bool acked, gfp_t gfp)
13273 {
13274 struct wireless_dev *wdev = dev->ieee80211_ptr;
13275 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13276 struct sk_buff *msg;
13277 void *hdr;
13278
13279 trace_cfg80211_probe_status(dev, addr, cookie, acked);
13280
13281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13282
13283 if (!msg)
13284 return;
13285
13286 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
13287 if (!hdr) {
13288 nlmsg_free(msg);
13289 return;
13290 }
13291
13292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13294 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
13295 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13296 NL80211_ATTR_PAD) ||
13297 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
13298 goto nla_put_failure;
13299
13300 genlmsg_end(msg, hdr);
13301
13302 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13303 NL80211_MCGRP_MLME, gfp);
13304 return;
13305
13306 nla_put_failure:
13307 genlmsg_cancel(msg, hdr);
13308 nlmsg_free(msg);
13309 }
13310 EXPORT_SYMBOL(cfg80211_probe_status);
13311
13312 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
13313 const u8 *frame, size_t len,
13314 int freq, int sig_dbm)
13315 {
13316 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13317 struct sk_buff *msg;
13318 void *hdr;
13319 struct cfg80211_beacon_registration *reg;
13320
13321 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
13322
13323 spin_lock_bh(&rdev->beacon_registrations_lock);
13324 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13325 msg = nlmsg_new(len + 100, GFP_ATOMIC);
13326 if (!msg) {
13327 spin_unlock_bh(&rdev->beacon_registrations_lock);
13328 return;
13329 }
13330
13331 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
13332 if (!hdr)
13333 goto nla_put_failure;
13334
13335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13336 (freq &&
13337 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
13338 (sig_dbm &&
13339 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
13340 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
13341 goto nla_put_failure;
13342
13343 genlmsg_end(msg, hdr);
13344
13345 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
13346 }
13347 spin_unlock_bh(&rdev->beacon_registrations_lock);
13348 return;
13349
13350 nla_put_failure:
13351 spin_unlock_bh(&rdev->beacon_registrations_lock);
13352 if (hdr)
13353 genlmsg_cancel(msg, hdr);
13354 nlmsg_free(msg);
13355 }
13356 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
13357
13358 #ifdef CONFIG_PM
13359 static int cfg80211_net_detect_results(struct sk_buff *msg,
13360 struct cfg80211_wowlan_wakeup *wakeup)
13361 {
13362 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
13363 struct nlattr *nl_results, *nl_match, *nl_freqs;
13364 int i, j;
13365
13366 nl_results = nla_nest_start(
13367 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
13368 if (!nl_results)
13369 return -EMSGSIZE;
13370
13371 for (i = 0; i < nd->n_matches; i++) {
13372 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
13373
13374 nl_match = nla_nest_start(msg, i);
13375 if (!nl_match)
13376 break;
13377
13378 /* The SSID attribute is optional in nl80211, but for
13379 * simplicity reasons it's always present in the
13380 * cfg80211 structure. If a driver can't pass the
13381 * SSID, that needs to be changed. A zero length SSID
13382 * is still a valid SSID (wildcard), so it cannot be
13383 * used for this purpose.
13384 */
13385 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13386 match->ssid.ssid)) {
13387 nla_nest_cancel(msg, nl_match);
13388 goto out;
13389 }
13390
13391 if (match->n_channels) {
13392 nl_freqs = nla_nest_start(
13393 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13394 if (!nl_freqs) {
13395 nla_nest_cancel(msg, nl_match);
13396 goto out;
13397 }
13398
13399 for (j = 0; j < match->n_channels; j++) {
13400 if (nla_put_u32(msg, j, match->channels[j])) {
13401 nla_nest_cancel(msg, nl_freqs);
13402 nla_nest_cancel(msg, nl_match);
13403 goto out;
13404 }
13405 }
13406
13407 nla_nest_end(msg, nl_freqs);
13408 }
13409
13410 nla_nest_end(msg, nl_match);
13411 }
13412
13413 out:
13414 nla_nest_end(msg, nl_results);
13415 return 0;
13416 }
13417
13418 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13419 struct cfg80211_wowlan_wakeup *wakeup,
13420 gfp_t gfp)
13421 {
13422 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13423 struct sk_buff *msg;
13424 void *hdr;
13425 int size = 200;
13426
13427 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13428
13429 if (wakeup)
13430 size += wakeup->packet_present_len;
13431
13432 msg = nlmsg_new(size, gfp);
13433 if (!msg)
13434 return;
13435
13436 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13437 if (!hdr)
13438 goto free_msg;
13439
13440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13441 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13442 NL80211_ATTR_PAD))
13443 goto free_msg;
13444
13445 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13446 wdev->netdev->ifindex))
13447 goto free_msg;
13448
13449 if (wakeup) {
13450 struct nlattr *reasons;
13451
13452 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13453 if (!reasons)
13454 goto free_msg;
13455
13456 if (wakeup->disconnect &&
13457 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13458 goto free_msg;
13459 if (wakeup->magic_pkt &&
13460 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13461 goto free_msg;
13462 if (wakeup->gtk_rekey_failure &&
13463 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13464 goto free_msg;
13465 if (wakeup->eap_identity_req &&
13466 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13467 goto free_msg;
13468 if (wakeup->four_way_handshake &&
13469 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13470 goto free_msg;
13471 if (wakeup->rfkill_release &&
13472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13473 goto free_msg;
13474
13475 if (wakeup->pattern_idx >= 0 &&
13476 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13477 wakeup->pattern_idx))
13478 goto free_msg;
13479
13480 if (wakeup->tcp_match &&
13481 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13482 goto free_msg;
13483
13484 if (wakeup->tcp_connlost &&
13485 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13486 goto free_msg;
13487
13488 if (wakeup->tcp_nomoretokens &&
13489 nla_put_flag(msg,
13490 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13491 goto free_msg;
13492
13493 if (wakeup->packet) {
13494 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13495 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13496
13497 if (!wakeup->packet_80211) {
13498 pkt_attr =
13499 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13500 len_attr =
13501 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13502 }
13503
13504 if (wakeup->packet_len &&
13505 nla_put_u32(msg, len_attr, wakeup->packet_len))
13506 goto free_msg;
13507
13508 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13509 wakeup->packet))
13510 goto free_msg;
13511 }
13512
13513 if (wakeup->net_detect &&
13514 cfg80211_net_detect_results(msg, wakeup))
13515 goto free_msg;
13516
13517 nla_nest_end(msg, reasons);
13518 }
13519
13520 genlmsg_end(msg, hdr);
13521
13522 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13523 NL80211_MCGRP_MLME, gfp);
13524 return;
13525
13526 free_msg:
13527 nlmsg_free(msg);
13528 }
13529 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13530 #endif
13531
13532 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13533 enum nl80211_tdls_operation oper,
13534 u16 reason_code, gfp_t gfp)
13535 {
13536 struct wireless_dev *wdev = dev->ieee80211_ptr;
13537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13538 struct sk_buff *msg;
13539 void *hdr;
13540
13541 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13542 reason_code);
13543
13544 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13545 if (!msg)
13546 return;
13547
13548 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13549 if (!hdr) {
13550 nlmsg_free(msg);
13551 return;
13552 }
13553
13554 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13555 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13556 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13557 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13558 (reason_code > 0 &&
13559 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13560 goto nla_put_failure;
13561
13562 genlmsg_end(msg, hdr);
13563
13564 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13565 NL80211_MCGRP_MLME, gfp);
13566 return;
13567
13568 nla_put_failure:
13569 genlmsg_cancel(msg, hdr);
13570 nlmsg_free(msg);
13571 }
13572 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13573
13574 static int nl80211_netlink_notify(struct notifier_block * nb,
13575 unsigned long state,
13576 void *_notify)
13577 {
13578 struct netlink_notify *notify = _notify;
13579 struct cfg80211_registered_device *rdev;
13580 struct wireless_dev *wdev;
13581 struct cfg80211_beacon_registration *reg, *tmp;
13582
13583 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
13584 return NOTIFY_DONE;
13585
13586 rcu_read_lock();
13587
13588 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13589 bool schedule_destroy_work = false;
13590 bool schedule_scan_stop = false;
13591 struct cfg80211_sched_scan_request *sched_scan_req =
13592 rcu_dereference(rdev->sched_scan_req);
13593
13594 if (sched_scan_req && notify->portid &&
13595 sched_scan_req->owner_nlportid == notify->portid)
13596 schedule_scan_stop = true;
13597
13598 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
13599 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13600
13601 if (wdev->owner_nlportid == notify->portid)
13602 schedule_destroy_work = true;
13603 }
13604
13605 spin_lock_bh(&rdev->beacon_registrations_lock);
13606 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13607 list) {
13608 if (reg->nlportid == notify->portid) {
13609 list_del(&reg->list);
13610 kfree(reg);
13611 break;
13612 }
13613 }
13614 spin_unlock_bh(&rdev->beacon_registrations_lock);
13615
13616 if (schedule_destroy_work) {
13617 struct cfg80211_iface_destroy *destroy;
13618
13619 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13620 if (destroy) {
13621 destroy->nlportid = notify->portid;
13622 spin_lock(&rdev->destroy_list_lock);
13623 list_add(&destroy->list, &rdev->destroy_list);
13624 spin_unlock(&rdev->destroy_list_lock);
13625 schedule_work(&rdev->destroy_work);
13626 }
13627 } else if (schedule_scan_stop) {
13628 sched_scan_req->owner_nlportid = 0;
13629
13630 if (rdev->ops->sched_scan_stop &&
13631 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13632 schedule_work(&rdev->sched_scan_stop_wk);
13633 }
13634 }
13635
13636 rcu_read_unlock();
13637
13638 /*
13639 * It is possible that the user space process that is controlling the
13640 * indoor setting disappeared, so notify the regulatory core.
13641 */
13642 regulatory_netlink_notify(notify->portid);
13643 return NOTIFY_OK;
13644 }
13645
13646 static struct notifier_block nl80211_netlink_notifier = {
13647 .notifier_call = nl80211_netlink_notify,
13648 };
13649
13650 void cfg80211_ft_event(struct net_device *netdev,
13651 struct cfg80211_ft_event_params *ft_event)
13652 {
13653 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13654 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13655 struct sk_buff *msg;
13656 void *hdr;
13657
13658 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13659
13660 if (!ft_event->target_ap)
13661 return;
13662
13663 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13664 if (!msg)
13665 return;
13666
13667 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13668 if (!hdr)
13669 goto out;
13670
13671 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13672 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13673 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13674 goto out;
13675
13676 if (ft_event->ies &&
13677 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13678 goto out;
13679 if (ft_event->ric_ies &&
13680 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13681 ft_event->ric_ies))
13682 goto out;
13683
13684 genlmsg_end(msg, hdr);
13685
13686 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13687 NL80211_MCGRP_MLME, GFP_KERNEL);
13688 return;
13689 out:
13690 nlmsg_free(msg);
13691 }
13692 EXPORT_SYMBOL(cfg80211_ft_event);
13693
13694 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13695 {
13696 struct cfg80211_registered_device *rdev;
13697 struct sk_buff *msg;
13698 void *hdr;
13699 u32 nlportid;
13700
13701 rdev = wiphy_to_rdev(wdev->wiphy);
13702 if (!rdev->crit_proto_nlportid)
13703 return;
13704
13705 nlportid = rdev->crit_proto_nlportid;
13706 rdev->crit_proto_nlportid = 0;
13707
13708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13709 if (!msg)
13710 return;
13711
13712 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13713 if (!hdr)
13714 goto nla_put_failure;
13715
13716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13717 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13718 NL80211_ATTR_PAD))
13719 goto nla_put_failure;
13720
13721 genlmsg_end(msg, hdr);
13722
13723 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13724 return;
13725
13726 nla_put_failure:
13727 if (hdr)
13728 genlmsg_cancel(msg, hdr);
13729 nlmsg_free(msg);
13730 }
13731 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13732
13733 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13734 {
13735 struct wiphy *wiphy = wdev->wiphy;
13736 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13737 struct sk_buff *msg;
13738 void *hdr;
13739
13740 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13741 if (!msg)
13742 return;
13743
13744 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13745 if (!hdr)
13746 goto out;
13747
13748 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13749 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13750 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13751 NL80211_ATTR_PAD))
13752 goto out;
13753
13754 genlmsg_end(msg, hdr);
13755
13756 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13757 NL80211_MCGRP_MLME, GFP_KERNEL);
13758 return;
13759 out:
13760 nlmsg_free(msg);
13761 }
13762
13763 /* initialisation/exit functions */
13764
13765 int nl80211_init(void)
13766 {
13767 int err;
13768
13769 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13770 nl80211_mcgrps);
13771 if (err)
13772 return err;
13773
13774 err = netlink_register_notifier(&nl80211_netlink_notifier);
13775 if (err)
13776 goto err_out;
13777
13778 return 0;
13779 err_out:
13780 genl_unregister_family(&nl80211_fam);
13781 return err;
13782 }
13783
13784 void nl80211_exit(void)
13785 {
13786 netlink_unregister_notifier(&nl80211_netlink_notifier);
13787 genl_unregister_family(&nl80211_fam);
13788 }
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