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Merge tag 'sound-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 * Copyright 2013-2014 Intel Mobile Communications GmbH
6 * Copyright 2015 Intel Deutschland GmbH
7 */
8
9 #include <linux/if.h>
10 #include <linux/module.h>
11 #include <linux/err.h>
12 #include <linux/slab.h>
13 #include <linux/list.h>
14 #include <linux/if_ether.h>
15 #include <linux/ieee80211.h>
16 #include <linux/nl80211.h>
17 #include <linux/rtnetlink.h>
18 #include <linux/netlink.h>
19 #include <linux/etherdevice.h>
20 #include <net/net_namespace.h>
21 #include <net/genetlink.h>
22 #include <net/cfg80211.h>
23 #include <net/sock.h>
24 #include <net/inet_connection_sock.h>
25 #include "core.h"
26 #include "nl80211.h"
27 #include "reg.h"
28 #include "rdev-ops.h"
29
30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
31 struct genl_info *info,
32 struct cfg80211_crypto_settings *settings,
33 int cipher_limit);
34
35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
38 struct genl_info *info);
39
40 /* the netlink family */
41 static struct genl_family nl80211_fam = {
42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
43 .name = NL80211_GENL_NAME, /* have users key off the name instead */
44 .hdrsize = 0, /* no private header */
45 .version = 1, /* no particular meaning now */
46 .maxattr = NL80211_ATTR_MAX,
47 .netnsok = true,
48 .pre_doit = nl80211_pre_doit,
49 .post_doit = nl80211_post_doit,
50 };
51
52 /* multicast groups */
53 enum nl80211_multicast_groups {
54 NL80211_MCGRP_CONFIG,
55 NL80211_MCGRP_SCAN,
56 NL80211_MCGRP_REGULATORY,
57 NL80211_MCGRP_MLME,
58 NL80211_MCGRP_VENDOR,
59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
60 };
61
62 static const struct genl_multicast_group nl80211_mcgrps[] = {
63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
68 #ifdef CONFIG_NL80211_TESTMODE
69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
70 #endif
71 };
72
73 /* returns ERR_PTR values */
74 static struct wireless_dev *
75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
76 {
77 struct cfg80211_registered_device *rdev;
78 struct wireless_dev *result = NULL;
79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
81 u64 wdev_id;
82 int wiphy_idx = -1;
83 int ifidx = -1;
84
85 ASSERT_RTNL();
86
87 if (!have_ifidx && !have_wdev_id)
88 return ERR_PTR(-EINVAL);
89
90 if (have_ifidx)
91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
92 if (have_wdev_id) {
93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
94 wiphy_idx = wdev_id >> 32;
95 }
96
97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
98 struct wireless_dev *wdev;
99
100 if (wiphy_net(&rdev->wiphy) != netns)
101 continue;
102
103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
104 continue;
105
106 list_for_each_entry(wdev, &rdev->wdev_list, list) {
107 if (have_ifidx && wdev->netdev &&
108 wdev->netdev->ifindex == ifidx) {
109 result = wdev;
110 break;
111 }
112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
113 result = wdev;
114 break;
115 }
116 }
117
118 if (result)
119 break;
120 }
121
122 if (result)
123 return result;
124 return ERR_PTR(-ENODEV);
125 }
126
127 static struct cfg80211_registered_device *
128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
129 {
130 struct cfg80211_registered_device *rdev = NULL, *tmp;
131 struct net_device *netdev;
132
133 ASSERT_RTNL();
134
135 if (!attrs[NL80211_ATTR_WIPHY] &&
136 !attrs[NL80211_ATTR_IFINDEX] &&
137 !attrs[NL80211_ATTR_WDEV])
138 return ERR_PTR(-EINVAL);
139
140 if (attrs[NL80211_ATTR_WIPHY])
141 rdev = cfg80211_rdev_by_wiphy_idx(
142 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
143
144 if (attrs[NL80211_ATTR_WDEV]) {
145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
146 struct wireless_dev *wdev;
147 bool found = false;
148
149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
150 if (tmp) {
151 /* make sure wdev exists */
152 list_for_each_entry(wdev, &tmp->wdev_list, list) {
153 if (wdev->identifier != (u32)wdev_id)
154 continue;
155 found = true;
156 break;
157 }
158
159 if (!found)
160 tmp = NULL;
161
162 if (rdev && tmp != rdev)
163 return ERR_PTR(-EINVAL);
164 rdev = tmp;
165 }
166 }
167
168 if (attrs[NL80211_ATTR_IFINDEX]) {
169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
170 netdev = __dev_get_by_index(netns, ifindex);
171 if (netdev) {
172 if (netdev->ieee80211_ptr)
173 tmp = wiphy_to_rdev(
174 netdev->ieee80211_ptr->wiphy);
175 else
176 tmp = NULL;
177
178 /* not wireless device -- return error */
179 if (!tmp)
180 return ERR_PTR(-EINVAL);
181
182 /* mismatch -- return error */
183 if (rdev && tmp != rdev)
184 return ERR_PTR(-EINVAL);
185
186 rdev = tmp;
187 }
188 }
189
190 if (!rdev)
191 return ERR_PTR(-ENODEV);
192
193 if (netns != wiphy_net(&rdev->wiphy))
194 return ERR_PTR(-ENODEV);
195
196 return rdev;
197 }
198
199 /*
200 * This function returns a pointer to the driver
201 * that the genl_info item that is passed refers to.
202 *
203 * The result of this can be a PTR_ERR and hence must
204 * be checked with IS_ERR() for errors.
205 */
206 static struct cfg80211_registered_device *
207 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
208 {
209 return __cfg80211_rdev_from_attrs(netns, info->attrs);
210 }
211
212 /* policy for the attributes */
213 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
214 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
215 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
216 .len = 20-1 },
217 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
218
219 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
220 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
221 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
222 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
223 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
224
225 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
226 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
227 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
228 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
229 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
230 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
231
232 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
233 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
234 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
235
236 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
237 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
238
239 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
240 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
241 .len = WLAN_MAX_KEY_LEN },
242 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
243 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
244 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
245 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
246 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
247
248 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
249 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
250 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
251 .len = IEEE80211_MAX_DATA_LEN },
252 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
253 .len = IEEE80211_MAX_DATA_LEN },
254 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
255 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
256 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
257 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
258 .len = NL80211_MAX_SUPP_RATES },
259 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
260 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
261 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
262 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
263 .len = IEEE80211_MAX_MESH_ID_LEN },
264 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
265
266 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
267 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
268
269 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
270 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
271 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
272 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
273 .len = NL80211_MAX_SUPP_RATES },
274 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
275
276 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
277 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
278
279 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
280
281 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
282 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
283 .len = IEEE80211_MAX_DATA_LEN },
284 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
285 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
286
287 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
288 .len = IEEE80211_MAX_SSID_LEN },
289 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
290 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
291 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
292 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
293 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
294 [NL80211_ATTR_STA_FLAGS2] = {
295 .len = sizeof(struct nl80211_sta_flag_update),
296 },
297 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
299 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
300 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
301 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
302 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
303 [NL80211_ATTR_PID] = { .type = NLA_U32 },
304 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
305 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
306 .len = WLAN_PMKID_LEN },
307 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
308 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
309 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
310 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
311 .len = IEEE80211_MAX_DATA_LEN },
312 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
313 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
314 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
315 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
316 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
317 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
319 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
320 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
321 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
322 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
323 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
324 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
325 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
326 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
327 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
328 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
329 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
330 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
331 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
332 .len = IEEE80211_MAX_DATA_LEN },
333 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
334 .len = IEEE80211_MAX_DATA_LEN },
335 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
336 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
337 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
338 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
339 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
340 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
341 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
342 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
343 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
344 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
345 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
346 .len = IEEE80211_MAX_DATA_LEN },
347 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
348 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
349 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
350 .len = NL80211_HT_CAPABILITY_LEN
351 },
352 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
353 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
354 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
355 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
356 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
357 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
358 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
359 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
360 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
361 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
362 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
363 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
364 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
365 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
366 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
367 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
368 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
369 .len = NL80211_VHT_CAPABILITY_LEN,
370 },
371 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
372 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
373 .len = IEEE80211_MAX_DATA_LEN },
374 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
375 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
376 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
377 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
378 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
379 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
380 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
381 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
382 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
383 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
384 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
385 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
386 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
387 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
388 .len = IEEE80211_QOS_MAP_LEN_MAX },
389 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
390 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
391 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
392 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
393 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
394 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
395 [NL80211_ATTR_TSID] = { .type = NLA_U8 },
396 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
397 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
398 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
399 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
400 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
401 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
402 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
403 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
404 };
405
406 /* policy for the key attributes */
407 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
408 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
409 [NL80211_KEY_IDX] = { .type = NLA_U8 },
410 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
411 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
412 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
413 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
414 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
415 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
416 };
417
418 /* policy for the key default flags */
419 static const struct nla_policy
420 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
421 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
422 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
423 };
424
425 /* policy for WoWLAN attributes */
426 static const struct nla_policy
427 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
428 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
429 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
430 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
431 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
432 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
433 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
434 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
435 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
436 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
437 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
438 };
439
440 static const struct nla_policy
441 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
442 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
443 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
444 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
445 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
446 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
448 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
449 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
450 },
451 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
452 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
453 },
454 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
455 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
456 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
457 };
458
459 /* policy for coalesce rule attributes */
460 static const struct nla_policy
461 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
462 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
463 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
464 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
465 };
466
467 /* policy for GTK rekey offload attributes */
468 static const struct nla_policy
469 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
470 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
471 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
472 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
473 };
474
475 static const struct nla_policy
476 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
477 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
478 .len = IEEE80211_MAX_SSID_LEN },
479 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
480 };
481
482 static const struct nla_policy
483 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
484 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
485 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
486 };
487
488 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
489 struct netlink_callback *cb,
490 struct cfg80211_registered_device **rdev,
491 struct wireless_dev **wdev)
492 {
493 int err;
494
495 rtnl_lock();
496
497 if (!cb->args[0]) {
498 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
499 nl80211_fam.attrbuf, nl80211_fam.maxattr,
500 nl80211_policy);
501 if (err)
502 goto out_unlock;
503
504 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
505 nl80211_fam.attrbuf);
506 if (IS_ERR(*wdev)) {
507 err = PTR_ERR(*wdev);
508 goto out_unlock;
509 }
510 *rdev = wiphy_to_rdev((*wdev)->wiphy);
511 /* 0 is the first index - add 1 to parse only once */
512 cb->args[0] = (*rdev)->wiphy_idx + 1;
513 cb->args[1] = (*wdev)->identifier;
514 } else {
515 /* subtract the 1 again here */
516 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
517 struct wireless_dev *tmp;
518
519 if (!wiphy) {
520 err = -ENODEV;
521 goto out_unlock;
522 }
523 *rdev = wiphy_to_rdev(wiphy);
524 *wdev = NULL;
525
526 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
527 if (tmp->identifier == cb->args[1]) {
528 *wdev = tmp;
529 break;
530 }
531 }
532
533 if (!*wdev) {
534 err = -ENODEV;
535 goto out_unlock;
536 }
537 }
538
539 return 0;
540 out_unlock:
541 rtnl_unlock();
542 return err;
543 }
544
545 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
546 {
547 rtnl_unlock();
548 }
549
550 /* IE validation */
551 static bool is_valid_ie_attr(const struct nlattr *attr)
552 {
553 const u8 *pos;
554 int len;
555
556 if (!attr)
557 return true;
558
559 pos = nla_data(attr);
560 len = nla_len(attr);
561
562 while (len) {
563 u8 elemlen;
564
565 if (len < 2)
566 return false;
567 len -= 2;
568
569 elemlen = pos[1];
570 if (elemlen > len)
571 return false;
572
573 len -= elemlen;
574 pos += 2 + elemlen;
575 }
576
577 return true;
578 }
579
580 /* message building helper */
581 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
582 int flags, u8 cmd)
583 {
584 /* since there is no private header just add the generic one */
585 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
586 }
587
588 static int nl80211_msg_put_channel(struct sk_buff *msg,
589 struct ieee80211_channel *chan,
590 bool large)
591 {
592 /* Some channels must be completely excluded from the
593 * list to protect old user-space tools from breaking
594 */
595 if (!large && chan->flags &
596 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
597 return 0;
598
599 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
600 chan->center_freq))
601 goto nla_put_failure;
602
603 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
604 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
605 goto nla_put_failure;
606 if (chan->flags & IEEE80211_CHAN_NO_IR) {
607 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
608 goto nla_put_failure;
609 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
610 goto nla_put_failure;
611 }
612 if (chan->flags & IEEE80211_CHAN_RADAR) {
613 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
614 goto nla_put_failure;
615 if (large) {
616 u32 time;
617
618 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
619
620 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
621 chan->dfs_state))
622 goto nla_put_failure;
623 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
624 time))
625 goto nla_put_failure;
626 if (nla_put_u32(msg,
627 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
628 chan->dfs_cac_ms))
629 goto nla_put_failure;
630 }
631 }
632
633 if (large) {
634 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
635 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
636 goto nla_put_failure;
637 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
638 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
639 goto nla_put_failure;
640 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
641 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
642 goto nla_put_failure;
643 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
644 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
645 goto nla_put_failure;
646 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
647 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
648 goto nla_put_failure;
649 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
650 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
651 goto nla_put_failure;
652 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
653 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
654 goto nla_put_failure;
655 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
656 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
657 goto nla_put_failure;
658 }
659
660 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
661 DBM_TO_MBM(chan->max_power)))
662 goto nla_put_failure;
663
664 return 0;
665
666 nla_put_failure:
667 return -ENOBUFS;
668 }
669
670 /* netlink command implementations */
671
672 struct key_parse {
673 struct key_params p;
674 int idx;
675 int type;
676 bool def, defmgmt;
677 bool def_uni, def_multi;
678 };
679
680 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
681 {
682 struct nlattr *tb[NL80211_KEY_MAX + 1];
683 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
684 nl80211_key_policy);
685 if (err)
686 return err;
687
688 k->def = !!tb[NL80211_KEY_DEFAULT];
689 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
690
691 if (k->def) {
692 k->def_uni = true;
693 k->def_multi = true;
694 }
695 if (k->defmgmt)
696 k->def_multi = true;
697
698 if (tb[NL80211_KEY_IDX])
699 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
700
701 if (tb[NL80211_KEY_DATA]) {
702 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
703 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
704 }
705
706 if (tb[NL80211_KEY_SEQ]) {
707 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
708 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
709 }
710
711 if (tb[NL80211_KEY_CIPHER])
712 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
713
714 if (tb[NL80211_KEY_TYPE]) {
715 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
716 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
717 return -EINVAL;
718 }
719
720 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
721 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
722 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
723 tb[NL80211_KEY_DEFAULT_TYPES],
724 nl80211_key_default_policy);
725 if (err)
726 return err;
727
728 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
729 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
730 }
731
732 return 0;
733 }
734
735 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
736 {
737 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
738 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
739 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
740 }
741
742 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
743 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
744 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
745 }
746
747 if (info->attrs[NL80211_ATTR_KEY_IDX])
748 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
749
750 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
751 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
752
753 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
754 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
755
756 if (k->def) {
757 k->def_uni = true;
758 k->def_multi = true;
759 }
760 if (k->defmgmt)
761 k->def_multi = true;
762
763 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
764 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
765 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
766 return -EINVAL;
767 }
768
769 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
770 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
771 int err = nla_parse_nested(
772 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
773 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
774 nl80211_key_default_policy);
775 if (err)
776 return err;
777
778 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
779 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
780 }
781
782 return 0;
783 }
784
785 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
786 {
787 int err;
788
789 memset(k, 0, sizeof(*k));
790 k->idx = -1;
791 k->type = -1;
792
793 if (info->attrs[NL80211_ATTR_KEY])
794 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
795 else
796 err = nl80211_parse_key_old(info, k);
797
798 if (err)
799 return err;
800
801 if (k->def && k->defmgmt)
802 return -EINVAL;
803
804 if (k->defmgmt) {
805 if (k->def_uni || !k->def_multi)
806 return -EINVAL;
807 }
808
809 if (k->idx != -1) {
810 if (k->defmgmt) {
811 if (k->idx < 4 || k->idx > 5)
812 return -EINVAL;
813 } else if (k->def) {
814 if (k->idx < 0 || k->idx > 3)
815 return -EINVAL;
816 } else {
817 if (k->idx < 0 || k->idx > 5)
818 return -EINVAL;
819 }
820 }
821
822 return 0;
823 }
824
825 static struct cfg80211_cached_keys *
826 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
827 struct nlattr *keys, bool *no_ht)
828 {
829 struct key_parse parse;
830 struct nlattr *key;
831 struct cfg80211_cached_keys *result;
832 int rem, err, def = 0;
833
834 result = kzalloc(sizeof(*result), GFP_KERNEL);
835 if (!result)
836 return ERR_PTR(-ENOMEM);
837
838 result->def = -1;
839 result->defmgmt = -1;
840
841 nla_for_each_nested(key, keys, rem) {
842 memset(&parse, 0, sizeof(parse));
843 parse.idx = -1;
844
845 err = nl80211_parse_key_new(key, &parse);
846 if (err)
847 goto error;
848 err = -EINVAL;
849 if (!parse.p.key)
850 goto error;
851 if (parse.idx < 0 || parse.idx > 4)
852 goto error;
853 if (parse.def) {
854 if (def)
855 goto error;
856 def = 1;
857 result->def = parse.idx;
858 if (!parse.def_uni || !parse.def_multi)
859 goto error;
860 } else if (parse.defmgmt)
861 goto error;
862 err = cfg80211_validate_key_settings(rdev, &parse.p,
863 parse.idx, false, NULL);
864 if (err)
865 goto error;
866 result->params[parse.idx].cipher = parse.p.cipher;
867 result->params[parse.idx].key_len = parse.p.key_len;
868 result->params[parse.idx].key = result->data[parse.idx];
869 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
870
871 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
872 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
873 if (no_ht)
874 *no_ht = true;
875 }
876 }
877
878 return result;
879 error:
880 kfree(result);
881 return ERR_PTR(err);
882 }
883
884 static int nl80211_key_allowed(struct wireless_dev *wdev)
885 {
886 ASSERT_WDEV_LOCK(wdev);
887
888 switch (wdev->iftype) {
889 case NL80211_IFTYPE_AP:
890 case NL80211_IFTYPE_AP_VLAN:
891 case NL80211_IFTYPE_P2P_GO:
892 case NL80211_IFTYPE_MESH_POINT:
893 break;
894 case NL80211_IFTYPE_ADHOC:
895 case NL80211_IFTYPE_STATION:
896 case NL80211_IFTYPE_P2P_CLIENT:
897 if (!wdev->current_bss)
898 return -ENOLINK;
899 break;
900 case NL80211_IFTYPE_UNSPECIFIED:
901 case NL80211_IFTYPE_OCB:
902 case NL80211_IFTYPE_MONITOR:
903 case NL80211_IFTYPE_P2P_DEVICE:
904 case NL80211_IFTYPE_WDS:
905 case NUM_NL80211_IFTYPES:
906 return -EINVAL;
907 }
908
909 return 0;
910 }
911
912 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
913 struct nlattr *tb)
914 {
915 struct ieee80211_channel *chan;
916
917 if (tb == NULL)
918 return NULL;
919 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
920 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
921 return NULL;
922 return chan;
923 }
924
925 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
926 {
927 struct nlattr *nl_modes = nla_nest_start(msg, attr);
928 int i;
929
930 if (!nl_modes)
931 goto nla_put_failure;
932
933 i = 0;
934 while (ifmodes) {
935 if ((ifmodes & 1) && nla_put_flag(msg, i))
936 goto nla_put_failure;
937 ifmodes >>= 1;
938 i++;
939 }
940
941 nla_nest_end(msg, nl_modes);
942 return 0;
943
944 nla_put_failure:
945 return -ENOBUFS;
946 }
947
948 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
949 struct sk_buff *msg,
950 bool large)
951 {
952 struct nlattr *nl_combis;
953 int i, j;
954
955 nl_combis = nla_nest_start(msg,
956 NL80211_ATTR_INTERFACE_COMBINATIONS);
957 if (!nl_combis)
958 goto nla_put_failure;
959
960 for (i = 0; i < wiphy->n_iface_combinations; i++) {
961 const struct ieee80211_iface_combination *c;
962 struct nlattr *nl_combi, *nl_limits;
963
964 c = &wiphy->iface_combinations[i];
965
966 nl_combi = nla_nest_start(msg, i + 1);
967 if (!nl_combi)
968 goto nla_put_failure;
969
970 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
971 if (!nl_limits)
972 goto nla_put_failure;
973
974 for (j = 0; j < c->n_limits; j++) {
975 struct nlattr *nl_limit;
976
977 nl_limit = nla_nest_start(msg, j + 1);
978 if (!nl_limit)
979 goto nla_put_failure;
980 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
981 c->limits[j].max))
982 goto nla_put_failure;
983 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
984 c->limits[j].types))
985 goto nla_put_failure;
986 nla_nest_end(msg, nl_limit);
987 }
988
989 nla_nest_end(msg, nl_limits);
990
991 if (c->beacon_int_infra_match &&
992 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
993 goto nla_put_failure;
994 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
995 c->num_different_channels) ||
996 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
997 c->max_interfaces))
998 goto nla_put_failure;
999 if (large &&
1000 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1001 c->radar_detect_widths) ||
1002 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1003 c->radar_detect_regions)))
1004 goto nla_put_failure;
1005
1006 nla_nest_end(msg, nl_combi);
1007 }
1008
1009 nla_nest_end(msg, nl_combis);
1010
1011 return 0;
1012 nla_put_failure:
1013 return -ENOBUFS;
1014 }
1015
1016 #ifdef CONFIG_PM
1017 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1018 struct sk_buff *msg)
1019 {
1020 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1021 struct nlattr *nl_tcp;
1022
1023 if (!tcp)
1024 return 0;
1025
1026 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1027 if (!nl_tcp)
1028 return -ENOBUFS;
1029
1030 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1031 tcp->data_payload_max))
1032 return -ENOBUFS;
1033
1034 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1035 tcp->data_payload_max))
1036 return -ENOBUFS;
1037
1038 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1039 return -ENOBUFS;
1040
1041 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1042 sizeof(*tcp->tok), tcp->tok))
1043 return -ENOBUFS;
1044
1045 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1046 tcp->data_interval_max))
1047 return -ENOBUFS;
1048
1049 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1050 tcp->wake_payload_max))
1051 return -ENOBUFS;
1052
1053 nla_nest_end(msg, nl_tcp);
1054 return 0;
1055 }
1056
1057 static int nl80211_send_wowlan(struct sk_buff *msg,
1058 struct cfg80211_registered_device *rdev,
1059 bool large)
1060 {
1061 struct nlattr *nl_wowlan;
1062
1063 if (!rdev->wiphy.wowlan)
1064 return 0;
1065
1066 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1067 if (!nl_wowlan)
1068 return -ENOBUFS;
1069
1070 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1076 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1078 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1079 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1080 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1081 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1082 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1083 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1084 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1085 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1086 return -ENOBUFS;
1087
1088 if (rdev->wiphy.wowlan->n_patterns) {
1089 struct nl80211_pattern_support pat = {
1090 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1091 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1092 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1093 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1094 };
1095
1096 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1097 sizeof(pat), &pat))
1098 return -ENOBUFS;
1099 }
1100
1101 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1102 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1103 rdev->wiphy.wowlan->max_nd_match_sets))
1104 return -ENOBUFS;
1105
1106 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1107 return -ENOBUFS;
1108
1109 nla_nest_end(msg, nl_wowlan);
1110
1111 return 0;
1112 }
1113 #endif
1114
1115 static int nl80211_send_coalesce(struct sk_buff *msg,
1116 struct cfg80211_registered_device *rdev)
1117 {
1118 struct nl80211_coalesce_rule_support rule;
1119
1120 if (!rdev->wiphy.coalesce)
1121 return 0;
1122
1123 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1124 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1125 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1126 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1127 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1128 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1129
1130 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1131 return -ENOBUFS;
1132
1133 return 0;
1134 }
1135
1136 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1137 struct ieee80211_supported_band *sband)
1138 {
1139 struct nlattr *nl_rates, *nl_rate;
1140 struct ieee80211_rate *rate;
1141 int i;
1142
1143 /* add HT info */
1144 if (sband->ht_cap.ht_supported &&
1145 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1146 sizeof(sband->ht_cap.mcs),
1147 &sband->ht_cap.mcs) ||
1148 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1149 sband->ht_cap.cap) ||
1150 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1151 sband->ht_cap.ampdu_factor) ||
1152 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1153 sband->ht_cap.ampdu_density)))
1154 return -ENOBUFS;
1155
1156 /* add VHT info */
1157 if (sband->vht_cap.vht_supported &&
1158 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1159 sizeof(sband->vht_cap.vht_mcs),
1160 &sband->vht_cap.vht_mcs) ||
1161 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1162 sband->vht_cap.cap)))
1163 return -ENOBUFS;
1164
1165 /* add bitrates */
1166 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1167 if (!nl_rates)
1168 return -ENOBUFS;
1169
1170 for (i = 0; i < sband->n_bitrates; i++) {
1171 nl_rate = nla_nest_start(msg, i);
1172 if (!nl_rate)
1173 return -ENOBUFS;
1174
1175 rate = &sband->bitrates[i];
1176 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1177 rate->bitrate))
1178 return -ENOBUFS;
1179 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1180 nla_put_flag(msg,
1181 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1182 return -ENOBUFS;
1183
1184 nla_nest_end(msg, nl_rate);
1185 }
1186
1187 nla_nest_end(msg, nl_rates);
1188
1189 return 0;
1190 }
1191
1192 static int
1193 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1194 const struct ieee80211_txrx_stypes *mgmt_stypes)
1195 {
1196 u16 stypes;
1197 struct nlattr *nl_ftypes, *nl_ifs;
1198 enum nl80211_iftype ift;
1199 int i;
1200
1201 if (!mgmt_stypes)
1202 return 0;
1203
1204 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1205 if (!nl_ifs)
1206 return -ENOBUFS;
1207
1208 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1209 nl_ftypes = nla_nest_start(msg, ift);
1210 if (!nl_ftypes)
1211 return -ENOBUFS;
1212 i = 0;
1213 stypes = mgmt_stypes[ift].tx;
1214 while (stypes) {
1215 if ((stypes & 1) &&
1216 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1217 (i << 4) | IEEE80211_FTYPE_MGMT))
1218 return -ENOBUFS;
1219 stypes >>= 1;
1220 i++;
1221 }
1222 nla_nest_end(msg, nl_ftypes);
1223 }
1224
1225 nla_nest_end(msg, nl_ifs);
1226
1227 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1228 if (!nl_ifs)
1229 return -ENOBUFS;
1230
1231 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1232 nl_ftypes = nla_nest_start(msg, ift);
1233 if (!nl_ftypes)
1234 return -ENOBUFS;
1235 i = 0;
1236 stypes = mgmt_stypes[ift].rx;
1237 while (stypes) {
1238 if ((stypes & 1) &&
1239 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1240 (i << 4) | IEEE80211_FTYPE_MGMT))
1241 return -ENOBUFS;
1242 stypes >>= 1;
1243 i++;
1244 }
1245 nla_nest_end(msg, nl_ftypes);
1246 }
1247 nla_nest_end(msg, nl_ifs);
1248
1249 return 0;
1250 }
1251
1252 struct nl80211_dump_wiphy_state {
1253 s64 filter_wiphy;
1254 long start;
1255 long split_start, band_start, chan_start;
1256 bool split;
1257 };
1258
1259 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1260 enum nl80211_commands cmd,
1261 struct sk_buff *msg, u32 portid, u32 seq,
1262 int flags, struct nl80211_dump_wiphy_state *state)
1263 {
1264 void *hdr;
1265 struct nlattr *nl_bands, *nl_band;
1266 struct nlattr *nl_freqs, *nl_freq;
1267 struct nlattr *nl_cmds;
1268 enum ieee80211_band band;
1269 struct ieee80211_channel *chan;
1270 int i;
1271 const struct ieee80211_txrx_stypes *mgmt_stypes =
1272 rdev->wiphy.mgmt_stypes;
1273 u32 features;
1274
1275 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1276 if (!hdr)
1277 return -ENOBUFS;
1278
1279 if (WARN_ON(!state))
1280 return -EINVAL;
1281
1282 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1283 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1284 wiphy_name(&rdev->wiphy)) ||
1285 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1286 cfg80211_rdev_list_generation))
1287 goto nla_put_failure;
1288
1289 if (cmd != NL80211_CMD_NEW_WIPHY)
1290 goto finish;
1291
1292 switch (state->split_start) {
1293 case 0:
1294 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1295 rdev->wiphy.retry_short) ||
1296 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1297 rdev->wiphy.retry_long) ||
1298 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1299 rdev->wiphy.frag_threshold) ||
1300 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1301 rdev->wiphy.rts_threshold) ||
1302 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1303 rdev->wiphy.coverage_class) ||
1304 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1305 rdev->wiphy.max_scan_ssids) ||
1306 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1307 rdev->wiphy.max_sched_scan_ssids) ||
1308 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1309 rdev->wiphy.max_scan_ie_len) ||
1310 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1311 rdev->wiphy.max_sched_scan_ie_len) ||
1312 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1313 rdev->wiphy.max_match_sets) ||
1314 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1315 rdev->wiphy.max_sched_scan_plans) ||
1316 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1317 rdev->wiphy.max_sched_scan_plan_interval) ||
1318 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1319 rdev->wiphy.max_sched_scan_plan_iterations))
1320 goto nla_put_failure;
1321
1322 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1323 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1324 goto nla_put_failure;
1325 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1326 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1327 goto nla_put_failure;
1328 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1329 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1330 goto nla_put_failure;
1331 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1332 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1333 goto nla_put_failure;
1334 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1335 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1336 goto nla_put_failure;
1337 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1338 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1339 goto nla_put_failure;
1340 state->split_start++;
1341 if (state->split)
1342 break;
1343 case 1:
1344 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1345 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1346 rdev->wiphy.cipher_suites))
1347 goto nla_put_failure;
1348
1349 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1350 rdev->wiphy.max_num_pmkids))
1351 goto nla_put_failure;
1352
1353 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1354 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1355 goto nla_put_failure;
1356
1357 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1358 rdev->wiphy.available_antennas_tx) ||
1359 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1360 rdev->wiphy.available_antennas_rx))
1361 goto nla_put_failure;
1362
1363 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1364 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1365 rdev->wiphy.probe_resp_offload))
1366 goto nla_put_failure;
1367
1368 if ((rdev->wiphy.available_antennas_tx ||
1369 rdev->wiphy.available_antennas_rx) &&
1370 rdev->ops->get_antenna) {
1371 u32 tx_ant = 0, rx_ant = 0;
1372 int res;
1373 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1374 if (!res) {
1375 if (nla_put_u32(msg,
1376 NL80211_ATTR_WIPHY_ANTENNA_TX,
1377 tx_ant) ||
1378 nla_put_u32(msg,
1379 NL80211_ATTR_WIPHY_ANTENNA_RX,
1380 rx_ant))
1381 goto nla_put_failure;
1382 }
1383 }
1384
1385 state->split_start++;
1386 if (state->split)
1387 break;
1388 case 2:
1389 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1390 rdev->wiphy.interface_modes))
1391 goto nla_put_failure;
1392 state->split_start++;
1393 if (state->split)
1394 break;
1395 case 3:
1396 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1397 if (!nl_bands)
1398 goto nla_put_failure;
1399
1400 for (band = state->band_start;
1401 band < IEEE80211_NUM_BANDS; band++) {
1402 struct ieee80211_supported_band *sband;
1403
1404 sband = rdev->wiphy.bands[band];
1405
1406 if (!sband)
1407 continue;
1408
1409 nl_band = nla_nest_start(msg, band);
1410 if (!nl_band)
1411 goto nla_put_failure;
1412
1413 switch (state->chan_start) {
1414 case 0:
1415 if (nl80211_send_band_rateinfo(msg, sband))
1416 goto nla_put_failure;
1417 state->chan_start++;
1418 if (state->split)
1419 break;
1420 default:
1421 /* add frequencies */
1422 nl_freqs = nla_nest_start(
1423 msg, NL80211_BAND_ATTR_FREQS);
1424 if (!nl_freqs)
1425 goto nla_put_failure;
1426
1427 for (i = state->chan_start - 1;
1428 i < sband->n_channels;
1429 i++) {
1430 nl_freq = nla_nest_start(msg, i);
1431 if (!nl_freq)
1432 goto nla_put_failure;
1433
1434 chan = &sband->channels[i];
1435
1436 if (nl80211_msg_put_channel(
1437 msg, chan,
1438 state->split))
1439 goto nla_put_failure;
1440
1441 nla_nest_end(msg, nl_freq);
1442 if (state->split)
1443 break;
1444 }
1445 if (i < sband->n_channels)
1446 state->chan_start = i + 2;
1447 else
1448 state->chan_start = 0;
1449 nla_nest_end(msg, nl_freqs);
1450 }
1451
1452 nla_nest_end(msg, nl_band);
1453
1454 if (state->split) {
1455 /* start again here */
1456 if (state->chan_start)
1457 band--;
1458 break;
1459 }
1460 }
1461 nla_nest_end(msg, nl_bands);
1462
1463 if (band < IEEE80211_NUM_BANDS)
1464 state->band_start = band + 1;
1465 else
1466 state->band_start = 0;
1467
1468 /* if bands & channels are done, continue outside */
1469 if (state->band_start == 0 && state->chan_start == 0)
1470 state->split_start++;
1471 if (state->split)
1472 break;
1473 case 4:
1474 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1475 if (!nl_cmds)
1476 goto nla_put_failure;
1477
1478 i = 0;
1479 #define CMD(op, n) \
1480 do { \
1481 if (rdev->ops->op) { \
1482 i++; \
1483 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1484 goto nla_put_failure; \
1485 } \
1486 } while (0)
1487
1488 CMD(add_virtual_intf, NEW_INTERFACE);
1489 CMD(change_virtual_intf, SET_INTERFACE);
1490 CMD(add_key, NEW_KEY);
1491 CMD(start_ap, START_AP);
1492 CMD(add_station, NEW_STATION);
1493 CMD(add_mpath, NEW_MPATH);
1494 CMD(update_mesh_config, SET_MESH_CONFIG);
1495 CMD(change_bss, SET_BSS);
1496 CMD(auth, AUTHENTICATE);
1497 CMD(assoc, ASSOCIATE);
1498 CMD(deauth, DEAUTHENTICATE);
1499 CMD(disassoc, DISASSOCIATE);
1500 CMD(join_ibss, JOIN_IBSS);
1501 CMD(join_mesh, JOIN_MESH);
1502 CMD(set_pmksa, SET_PMKSA);
1503 CMD(del_pmksa, DEL_PMKSA);
1504 CMD(flush_pmksa, FLUSH_PMKSA);
1505 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1506 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1507 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1508 CMD(mgmt_tx, FRAME);
1509 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1510 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1511 i++;
1512 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1513 goto nla_put_failure;
1514 }
1515 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1516 rdev->ops->join_mesh) {
1517 i++;
1518 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1519 goto nla_put_failure;
1520 }
1521 CMD(set_wds_peer, SET_WDS_PEER);
1522 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1523 CMD(tdls_mgmt, TDLS_MGMT);
1524 CMD(tdls_oper, TDLS_OPER);
1525 }
1526 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1527 CMD(sched_scan_start, START_SCHED_SCAN);
1528 CMD(probe_client, PROBE_CLIENT);
1529 CMD(set_noack_map, SET_NOACK_MAP);
1530 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1531 i++;
1532 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1533 goto nla_put_failure;
1534 }
1535 CMD(start_p2p_device, START_P2P_DEVICE);
1536 CMD(set_mcast_rate, SET_MCAST_RATE);
1537 #ifdef CONFIG_NL80211_TESTMODE
1538 CMD(testmode_cmd, TESTMODE);
1539 #endif
1540 if (state->split) {
1541 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1542 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1543 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1544 CMD(channel_switch, CHANNEL_SWITCH);
1545 CMD(set_qos_map, SET_QOS_MAP);
1546 if (rdev->wiphy.features &
1547 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1548 CMD(add_tx_ts, ADD_TX_TS);
1549 }
1550 /* add into the if now */
1551 #undef CMD
1552
1553 if (rdev->ops->connect || rdev->ops->auth) {
1554 i++;
1555 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1556 goto nla_put_failure;
1557 }
1558
1559 if (rdev->ops->disconnect || rdev->ops->deauth) {
1560 i++;
1561 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1562 goto nla_put_failure;
1563 }
1564
1565 nla_nest_end(msg, nl_cmds);
1566 state->split_start++;
1567 if (state->split)
1568 break;
1569 case 5:
1570 if (rdev->ops->remain_on_channel &&
1571 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1572 nla_put_u32(msg,
1573 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1574 rdev->wiphy.max_remain_on_channel_duration))
1575 goto nla_put_failure;
1576
1577 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1578 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1579 goto nla_put_failure;
1580
1581 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1582 goto nla_put_failure;
1583 state->split_start++;
1584 if (state->split)
1585 break;
1586 case 6:
1587 #ifdef CONFIG_PM
1588 if (nl80211_send_wowlan(msg, rdev, state->split))
1589 goto nla_put_failure;
1590 state->split_start++;
1591 if (state->split)
1592 break;
1593 #else
1594 state->split_start++;
1595 #endif
1596 case 7:
1597 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1598 rdev->wiphy.software_iftypes))
1599 goto nla_put_failure;
1600
1601 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1602 state->split))
1603 goto nla_put_failure;
1604
1605 state->split_start++;
1606 if (state->split)
1607 break;
1608 case 8:
1609 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1610 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1611 rdev->wiphy.ap_sme_capa))
1612 goto nla_put_failure;
1613
1614 features = rdev->wiphy.features;
1615 /*
1616 * We can only add the per-channel limit information if the
1617 * dump is split, otherwise it makes it too big. Therefore
1618 * only advertise it in that case.
1619 */
1620 if (state->split)
1621 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1622 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1623 goto nla_put_failure;
1624
1625 if (rdev->wiphy.ht_capa_mod_mask &&
1626 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1627 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1628 rdev->wiphy.ht_capa_mod_mask))
1629 goto nla_put_failure;
1630
1631 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1632 rdev->wiphy.max_acl_mac_addrs &&
1633 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1634 rdev->wiphy.max_acl_mac_addrs))
1635 goto nla_put_failure;
1636
1637 /*
1638 * Any information below this point is only available to
1639 * applications that can deal with it being split. This
1640 * helps ensure that newly added capabilities don't break
1641 * older tools by overrunning their buffers.
1642 *
1643 * We still increment split_start so that in the split
1644 * case we'll continue with more data in the next round,
1645 * but break unconditionally so unsplit data stops here.
1646 */
1647 state->split_start++;
1648 break;
1649 case 9:
1650 if (rdev->wiphy.extended_capabilities &&
1651 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1652 rdev->wiphy.extended_capabilities_len,
1653 rdev->wiphy.extended_capabilities) ||
1654 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1655 rdev->wiphy.extended_capabilities_len,
1656 rdev->wiphy.extended_capabilities_mask)))
1657 goto nla_put_failure;
1658
1659 if (rdev->wiphy.vht_capa_mod_mask &&
1660 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1661 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1662 rdev->wiphy.vht_capa_mod_mask))
1663 goto nla_put_failure;
1664
1665 state->split_start++;
1666 break;
1667 case 10:
1668 if (nl80211_send_coalesce(msg, rdev))
1669 goto nla_put_failure;
1670
1671 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1672 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1673 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1674 goto nla_put_failure;
1675
1676 if (rdev->wiphy.max_ap_assoc_sta &&
1677 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1678 rdev->wiphy.max_ap_assoc_sta))
1679 goto nla_put_failure;
1680
1681 state->split_start++;
1682 break;
1683 case 11:
1684 if (rdev->wiphy.n_vendor_commands) {
1685 const struct nl80211_vendor_cmd_info *info;
1686 struct nlattr *nested;
1687
1688 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1689 if (!nested)
1690 goto nla_put_failure;
1691
1692 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1693 info = &rdev->wiphy.vendor_commands[i].info;
1694 if (nla_put(msg, i + 1, sizeof(*info), info))
1695 goto nla_put_failure;
1696 }
1697 nla_nest_end(msg, nested);
1698 }
1699
1700 if (rdev->wiphy.n_vendor_events) {
1701 const struct nl80211_vendor_cmd_info *info;
1702 struct nlattr *nested;
1703
1704 nested = nla_nest_start(msg,
1705 NL80211_ATTR_VENDOR_EVENTS);
1706 if (!nested)
1707 goto nla_put_failure;
1708
1709 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1710 info = &rdev->wiphy.vendor_events[i];
1711 if (nla_put(msg, i + 1, sizeof(*info), info))
1712 goto nla_put_failure;
1713 }
1714 nla_nest_end(msg, nested);
1715 }
1716 state->split_start++;
1717 break;
1718 case 12:
1719 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1720 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1721 rdev->wiphy.max_num_csa_counters))
1722 goto nla_put_failure;
1723
1724 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1725 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1726 goto nla_put_failure;
1727
1728 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1729 sizeof(rdev->wiphy.ext_features),
1730 rdev->wiphy.ext_features))
1731 goto nla_put_failure;
1732
1733 /* done */
1734 state->split_start = 0;
1735 break;
1736 }
1737 finish:
1738 genlmsg_end(msg, hdr);
1739 return 0;
1740
1741 nla_put_failure:
1742 genlmsg_cancel(msg, hdr);
1743 return -EMSGSIZE;
1744 }
1745
1746 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1747 struct netlink_callback *cb,
1748 struct nl80211_dump_wiphy_state *state)
1749 {
1750 struct nlattr **tb = nl80211_fam.attrbuf;
1751 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1752 tb, nl80211_fam.maxattr, nl80211_policy);
1753 /* ignore parse errors for backward compatibility */
1754 if (ret)
1755 return 0;
1756
1757 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1758 if (tb[NL80211_ATTR_WIPHY])
1759 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1760 if (tb[NL80211_ATTR_WDEV])
1761 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1762 if (tb[NL80211_ATTR_IFINDEX]) {
1763 struct net_device *netdev;
1764 struct cfg80211_registered_device *rdev;
1765 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1766
1767 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1768 if (!netdev)
1769 return -ENODEV;
1770 if (netdev->ieee80211_ptr) {
1771 rdev = wiphy_to_rdev(
1772 netdev->ieee80211_ptr->wiphy);
1773 state->filter_wiphy = rdev->wiphy_idx;
1774 }
1775 }
1776
1777 return 0;
1778 }
1779
1780 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1781 {
1782 int idx = 0, ret;
1783 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1784 struct cfg80211_registered_device *rdev;
1785
1786 rtnl_lock();
1787 if (!state) {
1788 state = kzalloc(sizeof(*state), GFP_KERNEL);
1789 if (!state) {
1790 rtnl_unlock();
1791 return -ENOMEM;
1792 }
1793 state->filter_wiphy = -1;
1794 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1795 if (ret) {
1796 kfree(state);
1797 rtnl_unlock();
1798 return ret;
1799 }
1800 cb->args[0] = (long)state;
1801 }
1802
1803 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1804 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1805 continue;
1806 if (++idx <= state->start)
1807 continue;
1808 if (state->filter_wiphy != -1 &&
1809 state->filter_wiphy != rdev->wiphy_idx)
1810 continue;
1811 /* attempt to fit multiple wiphy data chunks into the skb */
1812 do {
1813 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1814 skb,
1815 NETLINK_CB(cb->skb).portid,
1816 cb->nlh->nlmsg_seq,
1817 NLM_F_MULTI, state);
1818 if (ret < 0) {
1819 /*
1820 * If sending the wiphy data didn't fit (ENOBUFS
1821 * or EMSGSIZE returned), this SKB is still
1822 * empty (so it's not too big because another
1823 * wiphy dataset is already in the skb) and
1824 * we've not tried to adjust the dump allocation
1825 * yet ... then adjust the alloc size to be
1826 * bigger, and return 1 but with the empty skb.
1827 * This results in an empty message being RX'ed
1828 * in userspace, but that is ignored.
1829 *
1830 * We can then retry with the larger buffer.
1831 */
1832 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1833 !skb->len && !state->split &&
1834 cb->min_dump_alloc < 4096) {
1835 cb->min_dump_alloc = 4096;
1836 state->split_start = 0;
1837 rtnl_unlock();
1838 return 1;
1839 }
1840 idx--;
1841 break;
1842 }
1843 } while (state->split_start > 0);
1844 break;
1845 }
1846 rtnl_unlock();
1847
1848 state->start = idx;
1849
1850 return skb->len;
1851 }
1852
1853 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1854 {
1855 kfree((void *)cb->args[0]);
1856 return 0;
1857 }
1858
1859 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1860 {
1861 struct sk_buff *msg;
1862 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1863 struct nl80211_dump_wiphy_state state = {};
1864
1865 msg = nlmsg_new(4096, GFP_KERNEL);
1866 if (!msg)
1867 return -ENOMEM;
1868
1869 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1870 info->snd_portid, info->snd_seq, 0,
1871 &state) < 0) {
1872 nlmsg_free(msg);
1873 return -ENOBUFS;
1874 }
1875
1876 return genlmsg_reply(msg, info);
1877 }
1878
1879 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1880 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1881 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1882 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1883 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1884 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1885 };
1886
1887 static int parse_txq_params(struct nlattr *tb[],
1888 struct ieee80211_txq_params *txq_params)
1889 {
1890 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1891 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1892 !tb[NL80211_TXQ_ATTR_AIFS])
1893 return -EINVAL;
1894
1895 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1896 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1897 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1898 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1899 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1900
1901 if (txq_params->ac >= NL80211_NUM_ACS)
1902 return -EINVAL;
1903
1904 return 0;
1905 }
1906
1907 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1908 {
1909 /*
1910 * You can only set the channel explicitly for WDS interfaces,
1911 * all others have their channel managed via their respective
1912 * "establish a connection" command (connect, join, ...)
1913 *
1914 * For AP/GO and mesh mode, the channel can be set with the
1915 * channel userspace API, but is only stored and passed to the
1916 * low-level driver when the AP starts or the mesh is joined.
1917 * This is for backward compatibility, userspace can also give
1918 * the channel in the start-ap or join-mesh commands instead.
1919 *
1920 * Monitors are special as they are normally slaved to
1921 * whatever else is going on, so they have their own special
1922 * operation to set the monitor channel if possible.
1923 */
1924 return !wdev ||
1925 wdev->iftype == NL80211_IFTYPE_AP ||
1926 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1927 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1928 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1929 }
1930
1931 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1932 struct genl_info *info,
1933 struct cfg80211_chan_def *chandef)
1934 {
1935 u32 control_freq;
1936
1937 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1938 return -EINVAL;
1939
1940 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1941
1942 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1943 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1944 chandef->center_freq1 = control_freq;
1945 chandef->center_freq2 = 0;
1946
1947 /* Primary channel not allowed */
1948 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1949 return -EINVAL;
1950
1951 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1952 enum nl80211_channel_type chantype;
1953
1954 chantype = nla_get_u32(
1955 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1956
1957 switch (chantype) {
1958 case NL80211_CHAN_NO_HT:
1959 case NL80211_CHAN_HT20:
1960 case NL80211_CHAN_HT40PLUS:
1961 case NL80211_CHAN_HT40MINUS:
1962 cfg80211_chandef_create(chandef, chandef->chan,
1963 chantype);
1964 break;
1965 default:
1966 return -EINVAL;
1967 }
1968 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1969 chandef->width =
1970 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1971 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1972 chandef->center_freq1 =
1973 nla_get_u32(
1974 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1975 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1976 chandef->center_freq2 =
1977 nla_get_u32(
1978 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1979 }
1980
1981 if (!cfg80211_chandef_valid(chandef))
1982 return -EINVAL;
1983
1984 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1985 IEEE80211_CHAN_DISABLED))
1986 return -EINVAL;
1987
1988 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1989 chandef->width == NL80211_CHAN_WIDTH_10) &&
1990 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1991 return -EINVAL;
1992
1993 return 0;
1994 }
1995
1996 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1997 struct net_device *dev,
1998 struct genl_info *info)
1999 {
2000 struct cfg80211_chan_def chandef;
2001 int result;
2002 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2003 struct wireless_dev *wdev = NULL;
2004
2005 if (dev)
2006 wdev = dev->ieee80211_ptr;
2007 if (!nl80211_can_set_dev_channel(wdev))
2008 return -EOPNOTSUPP;
2009 if (wdev)
2010 iftype = wdev->iftype;
2011
2012 result = nl80211_parse_chandef(rdev, info, &chandef);
2013 if (result)
2014 return result;
2015
2016 switch (iftype) {
2017 case NL80211_IFTYPE_AP:
2018 case NL80211_IFTYPE_P2P_GO:
2019 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2020 iftype)) {
2021 result = -EINVAL;
2022 break;
2023 }
2024 if (wdev->beacon_interval) {
2025 if (!dev || !rdev->ops->set_ap_chanwidth ||
2026 !(rdev->wiphy.features &
2027 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2028 result = -EBUSY;
2029 break;
2030 }
2031
2032 /* Only allow dynamic channel width changes */
2033 if (chandef.chan != wdev->preset_chandef.chan) {
2034 result = -EBUSY;
2035 break;
2036 }
2037 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2038 if (result)
2039 break;
2040 }
2041 wdev->preset_chandef = chandef;
2042 result = 0;
2043 break;
2044 case NL80211_IFTYPE_MESH_POINT:
2045 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2046 break;
2047 case NL80211_IFTYPE_MONITOR:
2048 result = cfg80211_set_monitor_channel(rdev, &chandef);
2049 break;
2050 default:
2051 result = -EINVAL;
2052 }
2053
2054 return result;
2055 }
2056
2057 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2058 {
2059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2060 struct net_device *netdev = info->user_ptr[1];
2061
2062 return __nl80211_set_channel(rdev, netdev, info);
2063 }
2064
2065 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2066 {
2067 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2068 struct net_device *dev = info->user_ptr[1];
2069 struct wireless_dev *wdev = dev->ieee80211_ptr;
2070 const u8 *bssid;
2071
2072 if (!info->attrs[NL80211_ATTR_MAC])
2073 return -EINVAL;
2074
2075 if (netif_running(dev))
2076 return -EBUSY;
2077
2078 if (!rdev->ops->set_wds_peer)
2079 return -EOPNOTSUPP;
2080
2081 if (wdev->iftype != NL80211_IFTYPE_WDS)
2082 return -EOPNOTSUPP;
2083
2084 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2085 return rdev_set_wds_peer(rdev, dev, bssid);
2086 }
2087
2088
2089 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2090 {
2091 struct cfg80211_registered_device *rdev;
2092 struct net_device *netdev = NULL;
2093 struct wireless_dev *wdev;
2094 int result = 0, rem_txq_params = 0;
2095 struct nlattr *nl_txq_params;
2096 u32 changed;
2097 u8 retry_short = 0, retry_long = 0;
2098 u32 frag_threshold = 0, rts_threshold = 0;
2099 u8 coverage_class = 0;
2100
2101 ASSERT_RTNL();
2102
2103 /*
2104 * Try to find the wiphy and netdev. Normally this
2105 * function shouldn't need the netdev, but this is
2106 * done for backward compatibility -- previously
2107 * setting the channel was done per wiphy, but now
2108 * it is per netdev. Previous userland like hostapd
2109 * also passed a netdev to set_wiphy, so that it is
2110 * possible to let that go to the right netdev!
2111 */
2112
2113 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2114 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2115
2116 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2117 if (netdev && netdev->ieee80211_ptr)
2118 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2119 else
2120 netdev = NULL;
2121 }
2122
2123 if (!netdev) {
2124 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2125 info->attrs);
2126 if (IS_ERR(rdev))
2127 return PTR_ERR(rdev);
2128 wdev = NULL;
2129 netdev = NULL;
2130 result = 0;
2131 } else
2132 wdev = netdev->ieee80211_ptr;
2133
2134 /*
2135 * end workaround code, by now the rdev is available
2136 * and locked, and wdev may or may not be NULL.
2137 */
2138
2139 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2140 result = cfg80211_dev_rename(
2141 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2142
2143 if (result)
2144 return result;
2145
2146 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2147 struct ieee80211_txq_params txq_params;
2148 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2149
2150 if (!rdev->ops->set_txq_params)
2151 return -EOPNOTSUPP;
2152
2153 if (!netdev)
2154 return -EINVAL;
2155
2156 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2157 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2158 return -EINVAL;
2159
2160 if (!netif_running(netdev))
2161 return -ENETDOWN;
2162
2163 nla_for_each_nested(nl_txq_params,
2164 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2165 rem_txq_params) {
2166 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2167 nla_data(nl_txq_params),
2168 nla_len(nl_txq_params),
2169 txq_params_policy);
2170 if (result)
2171 return result;
2172 result = parse_txq_params(tb, &txq_params);
2173 if (result)
2174 return result;
2175
2176 result = rdev_set_txq_params(rdev, netdev,
2177 &txq_params);
2178 if (result)
2179 return result;
2180 }
2181 }
2182
2183 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2184 result = __nl80211_set_channel(
2185 rdev,
2186 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2187 info);
2188 if (result)
2189 return result;
2190 }
2191
2192 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2193 struct wireless_dev *txp_wdev = wdev;
2194 enum nl80211_tx_power_setting type;
2195 int idx, mbm = 0;
2196
2197 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2198 txp_wdev = NULL;
2199
2200 if (!rdev->ops->set_tx_power)
2201 return -EOPNOTSUPP;
2202
2203 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2204 type = nla_get_u32(info->attrs[idx]);
2205
2206 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2207 (type != NL80211_TX_POWER_AUTOMATIC))
2208 return -EINVAL;
2209
2210 if (type != NL80211_TX_POWER_AUTOMATIC) {
2211 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2212 mbm = nla_get_u32(info->attrs[idx]);
2213 }
2214
2215 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2216 if (result)
2217 return result;
2218 }
2219
2220 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2221 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2222 u32 tx_ant, rx_ant;
2223 if ((!rdev->wiphy.available_antennas_tx &&
2224 !rdev->wiphy.available_antennas_rx) ||
2225 !rdev->ops->set_antenna)
2226 return -EOPNOTSUPP;
2227
2228 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2229 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2230
2231 /* reject antenna configurations which don't match the
2232 * available antenna masks, except for the "all" mask */
2233 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2234 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2235 return -EINVAL;
2236
2237 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2238 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2239
2240 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2241 if (result)
2242 return result;
2243 }
2244
2245 changed = 0;
2246
2247 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2248 retry_short = nla_get_u8(
2249 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2250 if (retry_short == 0)
2251 return -EINVAL;
2252
2253 changed |= WIPHY_PARAM_RETRY_SHORT;
2254 }
2255
2256 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2257 retry_long = nla_get_u8(
2258 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2259 if (retry_long == 0)
2260 return -EINVAL;
2261
2262 changed |= WIPHY_PARAM_RETRY_LONG;
2263 }
2264
2265 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2266 frag_threshold = nla_get_u32(
2267 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2268 if (frag_threshold < 256)
2269 return -EINVAL;
2270
2271 if (frag_threshold != (u32) -1) {
2272 /*
2273 * Fragments (apart from the last one) are required to
2274 * have even length. Make the fragmentation code
2275 * simpler by stripping LSB should someone try to use
2276 * odd threshold value.
2277 */
2278 frag_threshold &= ~0x1;
2279 }
2280 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2281 }
2282
2283 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2284 rts_threshold = nla_get_u32(
2285 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2286 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2287 }
2288
2289 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2290 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2291 return -EINVAL;
2292
2293 coverage_class = nla_get_u8(
2294 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2295 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2296 }
2297
2298 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2299 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2300 return -EOPNOTSUPP;
2301
2302 changed |= WIPHY_PARAM_DYN_ACK;
2303 }
2304
2305 if (changed) {
2306 u8 old_retry_short, old_retry_long;
2307 u32 old_frag_threshold, old_rts_threshold;
2308 u8 old_coverage_class;
2309
2310 if (!rdev->ops->set_wiphy_params)
2311 return -EOPNOTSUPP;
2312
2313 old_retry_short = rdev->wiphy.retry_short;
2314 old_retry_long = rdev->wiphy.retry_long;
2315 old_frag_threshold = rdev->wiphy.frag_threshold;
2316 old_rts_threshold = rdev->wiphy.rts_threshold;
2317 old_coverage_class = rdev->wiphy.coverage_class;
2318
2319 if (changed & WIPHY_PARAM_RETRY_SHORT)
2320 rdev->wiphy.retry_short = retry_short;
2321 if (changed & WIPHY_PARAM_RETRY_LONG)
2322 rdev->wiphy.retry_long = retry_long;
2323 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2324 rdev->wiphy.frag_threshold = frag_threshold;
2325 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2326 rdev->wiphy.rts_threshold = rts_threshold;
2327 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2328 rdev->wiphy.coverage_class = coverage_class;
2329
2330 result = rdev_set_wiphy_params(rdev, changed);
2331 if (result) {
2332 rdev->wiphy.retry_short = old_retry_short;
2333 rdev->wiphy.retry_long = old_retry_long;
2334 rdev->wiphy.frag_threshold = old_frag_threshold;
2335 rdev->wiphy.rts_threshold = old_rts_threshold;
2336 rdev->wiphy.coverage_class = old_coverage_class;
2337 return result;
2338 }
2339 }
2340 return 0;
2341 }
2342
2343 static inline u64 wdev_id(struct wireless_dev *wdev)
2344 {
2345 return (u64)wdev->identifier |
2346 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2347 }
2348
2349 static int nl80211_send_chandef(struct sk_buff *msg,
2350 const struct cfg80211_chan_def *chandef)
2351 {
2352 if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2353 return -EINVAL;
2354
2355 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2356 chandef->chan->center_freq))
2357 return -ENOBUFS;
2358 switch (chandef->width) {
2359 case NL80211_CHAN_WIDTH_20_NOHT:
2360 case NL80211_CHAN_WIDTH_20:
2361 case NL80211_CHAN_WIDTH_40:
2362 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2363 cfg80211_get_chandef_type(chandef)))
2364 return -ENOBUFS;
2365 break;
2366 default:
2367 break;
2368 }
2369 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2370 return -ENOBUFS;
2371 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2372 return -ENOBUFS;
2373 if (chandef->center_freq2 &&
2374 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2375 return -ENOBUFS;
2376 return 0;
2377 }
2378
2379 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2380 struct cfg80211_registered_device *rdev,
2381 struct wireless_dev *wdev, bool removal)
2382 {
2383 struct net_device *dev = wdev->netdev;
2384 u8 cmd = NL80211_CMD_NEW_INTERFACE;
2385 void *hdr;
2386
2387 if (removal)
2388 cmd = NL80211_CMD_DEL_INTERFACE;
2389
2390 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2391 if (!hdr)
2392 return -1;
2393
2394 if (dev &&
2395 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2396 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2397 goto nla_put_failure;
2398
2399 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2400 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2401 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2402 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2403 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2404 rdev->devlist_generation ^
2405 (cfg80211_rdev_list_generation << 2)))
2406 goto nla_put_failure;
2407
2408 if (rdev->ops->get_channel) {
2409 int ret;
2410 struct cfg80211_chan_def chandef;
2411
2412 ret = rdev_get_channel(rdev, wdev, &chandef);
2413 if (ret == 0) {
2414 if (nl80211_send_chandef(msg, &chandef))
2415 goto nla_put_failure;
2416 }
2417 }
2418
2419 if (rdev->ops->get_tx_power) {
2420 int dbm, ret;
2421
2422 ret = rdev_get_tx_power(rdev, wdev, &dbm);
2423 if (ret == 0 &&
2424 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
2425 DBM_TO_MBM(dbm)))
2426 goto nla_put_failure;
2427 }
2428
2429 if (wdev->ssid_len) {
2430 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2431 goto nla_put_failure;
2432 }
2433
2434 genlmsg_end(msg, hdr);
2435 return 0;
2436
2437 nla_put_failure:
2438 genlmsg_cancel(msg, hdr);
2439 return -EMSGSIZE;
2440 }
2441
2442 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2443 {
2444 int wp_idx = 0;
2445 int if_idx = 0;
2446 int wp_start = cb->args[0];
2447 int if_start = cb->args[1];
2448 struct cfg80211_registered_device *rdev;
2449 struct wireless_dev *wdev;
2450
2451 rtnl_lock();
2452 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2453 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2454 continue;
2455 if (wp_idx < wp_start) {
2456 wp_idx++;
2457 continue;
2458 }
2459 if_idx = 0;
2460
2461 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2462 if (if_idx < if_start) {
2463 if_idx++;
2464 continue;
2465 }
2466 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2467 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2468 rdev, wdev, false) < 0) {
2469 goto out;
2470 }
2471 if_idx++;
2472 }
2473
2474 wp_idx++;
2475 }
2476 out:
2477 rtnl_unlock();
2478
2479 cb->args[0] = wp_idx;
2480 cb->args[1] = if_idx;
2481
2482 return skb->len;
2483 }
2484
2485 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2486 {
2487 struct sk_buff *msg;
2488 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2489 struct wireless_dev *wdev = info->user_ptr[1];
2490
2491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2492 if (!msg)
2493 return -ENOMEM;
2494
2495 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2496 rdev, wdev, false) < 0) {
2497 nlmsg_free(msg);
2498 return -ENOBUFS;
2499 }
2500
2501 return genlmsg_reply(msg, info);
2502 }
2503
2504 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2505 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2506 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2507 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2508 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2509 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2510 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2511 };
2512
2513 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2514 {
2515 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2516 int flag;
2517
2518 *mntrflags = 0;
2519
2520 if (!nla)
2521 return -EINVAL;
2522
2523 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2524 nla, mntr_flags_policy))
2525 return -EINVAL;
2526
2527 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2528 if (flags[flag])
2529 *mntrflags |= (1<<flag);
2530
2531 return 0;
2532 }
2533
2534 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2535 struct net_device *netdev, u8 use_4addr,
2536 enum nl80211_iftype iftype)
2537 {
2538 if (!use_4addr) {
2539 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2540 return -EBUSY;
2541 return 0;
2542 }
2543
2544 switch (iftype) {
2545 case NL80211_IFTYPE_AP_VLAN:
2546 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2547 return 0;
2548 break;
2549 case NL80211_IFTYPE_STATION:
2550 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2551 return 0;
2552 break;
2553 default:
2554 break;
2555 }
2556
2557 return -EOPNOTSUPP;
2558 }
2559
2560 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2561 {
2562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2563 struct vif_params params;
2564 int err;
2565 enum nl80211_iftype otype, ntype;
2566 struct net_device *dev = info->user_ptr[1];
2567 u32 _flags, *flags = NULL;
2568 bool change = false;
2569
2570 memset(&params, 0, sizeof(params));
2571
2572 otype = ntype = dev->ieee80211_ptr->iftype;
2573
2574 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2575 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2576 if (otype != ntype)
2577 change = true;
2578 if (ntype > NL80211_IFTYPE_MAX)
2579 return -EINVAL;
2580 }
2581
2582 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2583 struct wireless_dev *wdev = dev->ieee80211_ptr;
2584
2585 if (ntype != NL80211_IFTYPE_MESH_POINT)
2586 return -EINVAL;
2587 if (netif_running(dev))
2588 return -EBUSY;
2589
2590 wdev_lock(wdev);
2591 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2592 IEEE80211_MAX_MESH_ID_LEN);
2593 wdev->mesh_id_up_len =
2594 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2595 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2596 wdev->mesh_id_up_len);
2597 wdev_unlock(wdev);
2598 }
2599
2600 if (info->attrs[NL80211_ATTR_4ADDR]) {
2601 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2602 change = true;
2603 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2604 if (err)
2605 return err;
2606 } else {
2607 params.use_4addr = -1;
2608 }
2609
2610 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2611 if (ntype != NL80211_IFTYPE_MONITOR)
2612 return -EINVAL;
2613 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2614 &_flags);
2615 if (err)
2616 return err;
2617
2618 flags = &_flags;
2619 change = true;
2620 }
2621
2622 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2623 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2624 return -EOPNOTSUPP;
2625
2626 if (change)
2627 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2628 else
2629 err = 0;
2630
2631 if (!err && params.use_4addr != -1)
2632 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2633
2634 return err;
2635 }
2636
2637 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2638 {
2639 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2640 struct vif_params params;
2641 struct wireless_dev *wdev;
2642 struct sk_buff *msg, *event;
2643 int err;
2644 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2645 u32 flags;
2646
2647 /* to avoid failing a new interface creation due to pending removal */
2648 cfg80211_destroy_ifaces(rdev);
2649
2650 memset(&params, 0, sizeof(params));
2651
2652 if (!info->attrs[NL80211_ATTR_IFNAME])
2653 return -EINVAL;
2654
2655 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2656 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2657 if (type > NL80211_IFTYPE_MAX)
2658 return -EINVAL;
2659 }
2660
2661 if (!rdev->ops->add_virtual_intf ||
2662 !(rdev->wiphy.interface_modes & (1 << type)))
2663 return -EOPNOTSUPP;
2664
2665 if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2666 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2667 info->attrs[NL80211_ATTR_MAC]) {
2668 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2669 ETH_ALEN);
2670 if (!is_valid_ether_addr(params.macaddr))
2671 return -EADDRNOTAVAIL;
2672 }
2673
2674 if (info->attrs[NL80211_ATTR_4ADDR]) {
2675 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2676 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2677 if (err)
2678 return err;
2679 }
2680
2681 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2682 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2683 &flags);
2684
2685 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2686 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2687 return -EOPNOTSUPP;
2688
2689 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2690 if (!msg)
2691 return -ENOMEM;
2692
2693 wdev = rdev_add_virtual_intf(rdev,
2694 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2695 NET_NAME_USER, type, err ? NULL : &flags,
2696 &params);
2697 if (WARN_ON(!wdev)) {
2698 nlmsg_free(msg);
2699 return -EPROTO;
2700 } else if (IS_ERR(wdev)) {
2701 nlmsg_free(msg);
2702 return PTR_ERR(wdev);
2703 }
2704
2705 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2706 wdev->owner_nlportid = info->snd_portid;
2707
2708 switch (type) {
2709 case NL80211_IFTYPE_MESH_POINT:
2710 if (!info->attrs[NL80211_ATTR_MESH_ID])
2711 break;
2712 wdev_lock(wdev);
2713 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2714 IEEE80211_MAX_MESH_ID_LEN);
2715 wdev->mesh_id_up_len =
2716 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2717 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2718 wdev->mesh_id_up_len);
2719 wdev_unlock(wdev);
2720 break;
2721 case NL80211_IFTYPE_P2P_DEVICE:
2722 /*
2723 * P2P Device doesn't have a netdev, so doesn't go
2724 * through the netdev notifier and must be added here
2725 */
2726 mutex_init(&wdev->mtx);
2727 INIT_LIST_HEAD(&wdev->event_list);
2728 spin_lock_init(&wdev->event_lock);
2729 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2730 spin_lock_init(&wdev->mgmt_registrations_lock);
2731
2732 wdev->identifier = ++rdev->wdev_id;
2733 list_add_rcu(&wdev->list, &rdev->wdev_list);
2734 rdev->devlist_generation++;
2735 break;
2736 default:
2737 break;
2738 }
2739
2740 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2741 rdev, wdev, false) < 0) {
2742 nlmsg_free(msg);
2743 return -ENOBUFS;
2744 }
2745
2746 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2747 if (event) {
2748 if (nl80211_send_iface(event, 0, 0, 0,
2749 rdev, wdev, false) < 0) {
2750 nlmsg_free(event);
2751 goto out;
2752 }
2753
2754 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2755 event, 0, NL80211_MCGRP_CONFIG,
2756 GFP_KERNEL);
2757 }
2758
2759 out:
2760 return genlmsg_reply(msg, info);
2761 }
2762
2763 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2764 {
2765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2766 struct wireless_dev *wdev = info->user_ptr[1];
2767 struct sk_buff *msg;
2768 int status;
2769
2770 if (!rdev->ops->del_virtual_intf)
2771 return -EOPNOTSUPP;
2772
2773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2774 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2775 nlmsg_free(msg);
2776 msg = NULL;
2777 }
2778
2779 /*
2780 * If we remove a wireless device without a netdev then clear
2781 * user_ptr[1] so that nl80211_post_doit won't dereference it
2782 * to check if it needs to do dev_put(). Otherwise it crashes
2783 * since the wdev has been freed, unlike with a netdev where
2784 * we need the dev_put() for the netdev to really be freed.
2785 */
2786 if (!wdev->netdev)
2787 info->user_ptr[1] = NULL;
2788
2789 status = rdev_del_virtual_intf(rdev, wdev);
2790 if (status >= 0 && msg)
2791 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2792 msg, 0, NL80211_MCGRP_CONFIG,
2793 GFP_KERNEL);
2794 else
2795 nlmsg_free(msg);
2796
2797 return status;
2798 }
2799
2800 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2801 {
2802 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2803 struct net_device *dev = info->user_ptr[1];
2804 u16 noack_map;
2805
2806 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2807 return -EINVAL;
2808
2809 if (!rdev->ops->set_noack_map)
2810 return -EOPNOTSUPP;
2811
2812 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2813
2814 return rdev_set_noack_map(rdev, dev, noack_map);
2815 }
2816
2817 struct get_key_cookie {
2818 struct sk_buff *msg;
2819 int error;
2820 int idx;
2821 };
2822
2823 static void get_key_callback(void *c, struct key_params *params)
2824 {
2825 struct nlattr *key;
2826 struct get_key_cookie *cookie = c;
2827
2828 if ((params->key &&
2829 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2830 params->key_len, params->key)) ||
2831 (params->seq &&
2832 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2833 params->seq_len, params->seq)) ||
2834 (params->cipher &&
2835 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2836 params->cipher)))
2837 goto nla_put_failure;
2838
2839 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2840 if (!key)
2841 goto nla_put_failure;
2842
2843 if ((params->key &&
2844 nla_put(cookie->msg, NL80211_KEY_DATA,
2845 params->key_len, params->key)) ||
2846 (params->seq &&
2847 nla_put(cookie->msg, NL80211_KEY_SEQ,
2848 params->seq_len, params->seq)) ||
2849 (params->cipher &&
2850 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2851 params->cipher)))
2852 goto nla_put_failure;
2853
2854 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2855 goto nla_put_failure;
2856
2857 nla_nest_end(cookie->msg, key);
2858
2859 return;
2860 nla_put_failure:
2861 cookie->error = 1;
2862 }
2863
2864 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2865 {
2866 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2867 int err;
2868 struct net_device *dev = info->user_ptr[1];
2869 u8 key_idx = 0;
2870 const u8 *mac_addr = NULL;
2871 bool pairwise;
2872 struct get_key_cookie cookie = {
2873 .error = 0,
2874 };
2875 void *hdr;
2876 struct sk_buff *msg;
2877
2878 if (info->attrs[NL80211_ATTR_KEY_IDX])
2879 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2880
2881 if (key_idx > 5)
2882 return -EINVAL;
2883
2884 if (info->attrs[NL80211_ATTR_MAC])
2885 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2886
2887 pairwise = !!mac_addr;
2888 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2889 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2890 if (kt >= NUM_NL80211_KEYTYPES)
2891 return -EINVAL;
2892 if (kt != NL80211_KEYTYPE_GROUP &&
2893 kt != NL80211_KEYTYPE_PAIRWISE)
2894 return -EINVAL;
2895 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2896 }
2897
2898 if (!rdev->ops->get_key)
2899 return -EOPNOTSUPP;
2900
2901 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2902 return -ENOENT;
2903
2904 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2905 if (!msg)
2906 return -ENOMEM;
2907
2908 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2909 NL80211_CMD_NEW_KEY);
2910 if (!hdr)
2911 goto nla_put_failure;
2912
2913 cookie.msg = msg;
2914 cookie.idx = key_idx;
2915
2916 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2917 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2918 goto nla_put_failure;
2919 if (mac_addr &&
2920 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2921 goto nla_put_failure;
2922
2923 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2924 get_key_callback);
2925
2926 if (err)
2927 goto free_msg;
2928
2929 if (cookie.error)
2930 goto nla_put_failure;
2931
2932 genlmsg_end(msg, hdr);
2933 return genlmsg_reply(msg, info);
2934
2935 nla_put_failure:
2936 err = -ENOBUFS;
2937 free_msg:
2938 nlmsg_free(msg);
2939 return err;
2940 }
2941
2942 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2943 {
2944 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2945 struct key_parse key;
2946 int err;
2947 struct net_device *dev = info->user_ptr[1];
2948
2949 err = nl80211_parse_key(info, &key);
2950 if (err)
2951 return err;
2952
2953 if (key.idx < 0)
2954 return -EINVAL;
2955
2956 /* only support setting default key */
2957 if (!key.def && !key.defmgmt)
2958 return -EINVAL;
2959
2960 wdev_lock(dev->ieee80211_ptr);
2961
2962 if (key.def) {
2963 if (!rdev->ops->set_default_key) {
2964 err = -EOPNOTSUPP;
2965 goto out;
2966 }
2967
2968 err = nl80211_key_allowed(dev->ieee80211_ptr);
2969 if (err)
2970 goto out;
2971
2972 err = rdev_set_default_key(rdev, dev, key.idx,
2973 key.def_uni, key.def_multi);
2974
2975 if (err)
2976 goto out;
2977
2978 #ifdef CONFIG_CFG80211_WEXT
2979 dev->ieee80211_ptr->wext.default_key = key.idx;
2980 #endif
2981 } else {
2982 if (key.def_uni || !key.def_multi) {
2983 err = -EINVAL;
2984 goto out;
2985 }
2986
2987 if (!rdev->ops->set_default_mgmt_key) {
2988 err = -EOPNOTSUPP;
2989 goto out;
2990 }
2991
2992 err = nl80211_key_allowed(dev->ieee80211_ptr);
2993 if (err)
2994 goto out;
2995
2996 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2997 if (err)
2998 goto out;
2999
3000 #ifdef CONFIG_CFG80211_WEXT
3001 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3002 #endif
3003 }
3004
3005 out:
3006 wdev_unlock(dev->ieee80211_ptr);
3007
3008 return err;
3009 }
3010
3011 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3012 {
3013 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3014 int err;
3015 struct net_device *dev = info->user_ptr[1];
3016 struct key_parse key;
3017 const u8 *mac_addr = NULL;
3018
3019 err = nl80211_parse_key(info, &key);
3020 if (err)
3021 return err;
3022
3023 if (!key.p.key)
3024 return -EINVAL;
3025
3026 if (info->attrs[NL80211_ATTR_MAC])
3027 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3028
3029 if (key.type == -1) {
3030 if (mac_addr)
3031 key.type = NL80211_KEYTYPE_PAIRWISE;
3032 else
3033 key.type = NL80211_KEYTYPE_GROUP;
3034 }
3035
3036 /* for now */
3037 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3038 key.type != NL80211_KEYTYPE_GROUP)
3039 return -EINVAL;
3040
3041 if (!rdev->ops->add_key)
3042 return -EOPNOTSUPP;
3043
3044 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3045 key.type == NL80211_KEYTYPE_PAIRWISE,
3046 mac_addr))
3047 return -EINVAL;
3048
3049 wdev_lock(dev->ieee80211_ptr);
3050 err = nl80211_key_allowed(dev->ieee80211_ptr);
3051 if (!err)
3052 err = rdev_add_key(rdev, dev, key.idx,
3053 key.type == NL80211_KEYTYPE_PAIRWISE,
3054 mac_addr, &key.p);
3055 wdev_unlock(dev->ieee80211_ptr);
3056
3057 return err;
3058 }
3059
3060 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3061 {
3062 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3063 int err;
3064 struct net_device *dev = info->user_ptr[1];
3065 u8 *mac_addr = NULL;
3066 struct key_parse key;
3067
3068 err = nl80211_parse_key(info, &key);
3069 if (err)
3070 return err;
3071
3072 if (info->attrs[NL80211_ATTR_MAC])
3073 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3074
3075 if (key.type == -1) {
3076 if (mac_addr)
3077 key.type = NL80211_KEYTYPE_PAIRWISE;
3078 else
3079 key.type = NL80211_KEYTYPE_GROUP;
3080 }
3081
3082 /* for now */
3083 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3084 key.type != NL80211_KEYTYPE_GROUP)
3085 return -EINVAL;
3086
3087 if (!rdev->ops->del_key)
3088 return -EOPNOTSUPP;
3089
3090 wdev_lock(dev->ieee80211_ptr);
3091 err = nl80211_key_allowed(dev->ieee80211_ptr);
3092
3093 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3094 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3095 err = -ENOENT;
3096
3097 if (!err)
3098 err = rdev_del_key(rdev, dev, key.idx,
3099 key.type == NL80211_KEYTYPE_PAIRWISE,
3100 mac_addr);
3101
3102 #ifdef CONFIG_CFG80211_WEXT
3103 if (!err) {
3104 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3105 dev->ieee80211_ptr->wext.default_key = -1;
3106 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3107 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3108 }
3109 #endif
3110 wdev_unlock(dev->ieee80211_ptr);
3111
3112 return err;
3113 }
3114
3115 /* This function returns an error or the number of nested attributes */
3116 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3117 {
3118 struct nlattr *attr;
3119 int n_entries = 0, tmp;
3120
3121 nla_for_each_nested(attr, nl_attr, tmp) {
3122 if (nla_len(attr) != ETH_ALEN)
3123 return -EINVAL;
3124
3125 n_entries++;
3126 }
3127
3128 return n_entries;
3129 }
3130
3131 /*
3132 * This function parses ACL information and allocates memory for ACL data.
3133 * On successful return, the calling function is responsible to free the
3134 * ACL buffer returned by this function.
3135 */
3136 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3137 struct genl_info *info)
3138 {
3139 enum nl80211_acl_policy acl_policy;
3140 struct nlattr *attr;
3141 struct cfg80211_acl_data *acl;
3142 int i = 0, n_entries, tmp;
3143
3144 if (!wiphy->max_acl_mac_addrs)
3145 return ERR_PTR(-EOPNOTSUPP);
3146
3147 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3148 return ERR_PTR(-EINVAL);
3149
3150 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3151 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3152 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3153 return ERR_PTR(-EINVAL);
3154
3155 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3156 return ERR_PTR(-EINVAL);
3157
3158 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3159 if (n_entries < 0)
3160 return ERR_PTR(n_entries);
3161
3162 if (n_entries > wiphy->max_acl_mac_addrs)
3163 return ERR_PTR(-ENOTSUPP);
3164
3165 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3166 GFP_KERNEL);
3167 if (!acl)
3168 return ERR_PTR(-ENOMEM);
3169
3170 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3171 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3172 i++;
3173 }
3174
3175 acl->n_acl_entries = n_entries;
3176 acl->acl_policy = acl_policy;
3177
3178 return acl;
3179 }
3180
3181 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3182 {
3183 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3184 struct net_device *dev = info->user_ptr[1];
3185 struct cfg80211_acl_data *acl;
3186 int err;
3187
3188 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3189 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3190 return -EOPNOTSUPP;
3191
3192 if (!dev->ieee80211_ptr->beacon_interval)
3193 return -EINVAL;
3194
3195 acl = parse_acl_data(&rdev->wiphy, info);
3196 if (IS_ERR(acl))
3197 return PTR_ERR(acl);
3198
3199 err = rdev_set_mac_acl(rdev, dev, acl);
3200
3201 kfree(acl);
3202
3203 return err;
3204 }
3205
3206 static int nl80211_parse_beacon(struct nlattr *attrs[],
3207 struct cfg80211_beacon_data *bcn)
3208 {
3209 bool haveinfo = false;
3210
3211 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3212 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3213 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3214 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3215 return -EINVAL;
3216
3217 memset(bcn, 0, sizeof(*bcn));
3218
3219 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3220 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3221 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3222 if (!bcn->head_len)
3223 return -EINVAL;
3224 haveinfo = true;
3225 }
3226
3227 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3228 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3229 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3230 haveinfo = true;
3231 }
3232
3233 if (!haveinfo)
3234 return -EINVAL;
3235
3236 if (attrs[NL80211_ATTR_IE]) {
3237 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3238 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3239 }
3240
3241 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3242 bcn->proberesp_ies =
3243 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3244 bcn->proberesp_ies_len =
3245 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3246 }
3247
3248 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3249 bcn->assocresp_ies =
3250 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3251 bcn->assocresp_ies_len =
3252 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3253 }
3254
3255 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3256 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3257 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3258 }
3259
3260 return 0;
3261 }
3262
3263 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3264 struct cfg80211_ap_settings *params)
3265 {
3266 struct wireless_dev *wdev;
3267 bool ret = false;
3268
3269 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3270 if (wdev->iftype != NL80211_IFTYPE_AP &&
3271 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3272 continue;
3273
3274 if (!wdev->preset_chandef.chan)
3275 continue;
3276
3277 params->chandef = wdev->preset_chandef;
3278 ret = true;
3279 break;
3280 }
3281
3282 return ret;
3283 }
3284
3285 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3286 enum nl80211_auth_type auth_type,
3287 enum nl80211_commands cmd)
3288 {
3289 if (auth_type > NL80211_AUTHTYPE_MAX)
3290 return false;
3291
3292 switch (cmd) {
3293 case NL80211_CMD_AUTHENTICATE:
3294 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3295 auth_type == NL80211_AUTHTYPE_SAE)
3296 return false;
3297 return true;
3298 case NL80211_CMD_CONNECT:
3299 case NL80211_CMD_START_AP:
3300 /* SAE not supported yet */
3301 if (auth_type == NL80211_AUTHTYPE_SAE)
3302 return false;
3303 return true;
3304 default:
3305 return false;
3306 }
3307 }
3308
3309 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3310 {
3311 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3312 struct net_device *dev = info->user_ptr[1];
3313 struct wireless_dev *wdev = dev->ieee80211_ptr;
3314 struct cfg80211_ap_settings params;
3315 int err;
3316
3317 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3318 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3319 return -EOPNOTSUPP;
3320
3321 if (!rdev->ops->start_ap)
3322 return -EOPNOTSUPP;
3323
3324 if (wdev->beacon_interval)
3325 return -EALREADY;
3326
3327 memset(&params, 0, sizeof(params));
3328
3329 /* these are required for START_AP */
3330 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3331 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3332 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3333 return -EINVAL;
3334
3335 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3336 if (err)
3337 return err;
3338
3339 params.beacon_interval =
3340 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3341 params.dtim_period =
3342 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3343
3344 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3345 if (err)
3346 return err;
3347
3348 /*
3349 * In theory, some of these attributes should be required here
3350 * but since they were not used when the command was originally
3351 * added, keep them optional for old user space programs to let
3352 * them continue to work with drivers that do not need the
3353 * additional information -- drivers must check!
3354 */
3355 if (info->attrs[NL80211_ATTR_SSID]) {
3356 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3357 params.ssid_len =
3358 nla_len(info->attrs[NL80211_ATTR_SSID]);
3359 if (params.ssid_len == 0 ||
3360 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3361 return -EINVAL;
3362 }
3363
3364 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3365 params.hidden_ssid = nla_get_u32(
3366 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3367 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3368 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3369 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3370 return -EINVAL;
3371 }
3372
3373 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3374
3375 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3376 params.auth_type = nla_get_u32(
3377 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3378 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3379 NL80211_CMD_START_AP))
3380 return -EINVAL;
3381 } else
3382 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3383
3384 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3385 NL80211_MAX_NR_CIPHER_SUITES);
3386 if (err)
3387 return err;
3388
3389 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3390 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3391 return -EOPNOTSUPP;
3392 params.inactivity_timeout = nla_get_u16(
3393 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3394 }
3395
3396 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3397 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3398 return -EINVAL;
3399 params.p2p_ctwindow =
3400 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3401 if (params.p2p_ctwindow > 127)
3402 return -EINVAL;
3403 if (params.p2p_ctwindow != 0 &&
3404 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3405 return -EINVAL;
3406 }
3407
3408 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3409 u8 tmp;
3410
3411 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3412 return -EINVAL;
3413 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3414 if (tmp > 1)
3415 return -EINVAL;
3416 params.p2p_opp_ps = tmp;
3417 if (params.p2p_opp_ps != 0 &&
3418 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3419 return -EINVAL;
3420 }
3421
3422 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3423 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3424 if (err)
3425 return err;
3426 } else if (wdev->preset_chandef.chan) {
3427 params.chandef = wdev->preset_chandef;
3428 } else if (!nl80211_get_ap_channel(rdev, &params))
3429 return -EINVAL;
3430
3431 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
3432 wdev->iftype))
3433 return -EINVAL;
3434
3435 if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3436 params.smps_mode =
3437 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3438 switch (params.smps_mode) {
3439 case NL80211_SMPS_OFF:
3440 break;
3441 case NL80211_SMPS_STATIC:
3442 if (!(rdev->wiphy.features &
3443 NL80211_FEATURE_STATIC_SMPS))
3444 return -EINVAL;
3445 break;
3446 case NL80211_SMPS_DYNAMIC:
3447 if (!(rdev->wiphy.features &
3448 NL80211_FEATURE_DYNAMIC_SMPS))
3449 return -EINVAL;
3450 break;
3451 default:
3452 return -EINVAL;
3453 }
3454 } else {
3455 params.smps_mode = NL80211_SMPS_OFF;
3456 }
3457
3458 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3459 params.acl = parse_acl_data(&rdev->wiphy, info);
3460 if (IS_ERR(params.acl))
3461 return PTR_ERR(params.acl);
3462 }
3463
3464 wdev_lock(wdev);
3465 err = rdev_start_ap(rdev, dev, &params);
3466 if (!err) {
3467 wdev->preset_chandef = params.chandef;
3468 wdev->beacon_interval = params.beacon_interval;
3469 wdev->chandef = params.chandef;
3470 wdev->ssid_len = params.ssid_len;
3471 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3472 }
3473 wdev_unlock(wdev);
3474
3475 kfree(params.acl);
3476
3477 return err;
3478 }
3479
3480 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3481 {
3482 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3483 struct net_device *dev = info->user_ptr[1];
3484 struct wireless_dev *wdev = dev->ieee80211_ptr;
3485 struct cfg80211_beacon_data params;
3486 int err;
3487
3488 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3489 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3490 return -EOPNOTSUPP;
3491
3492 if (!rdev->ops->change_beacon)
3493 return -EOPNOTSUPP;
3494
3495 if (!wdev->beacon_interval)
3496 return -EINVAL;
3497
3498 err = nl80211_parse_beacon(info->attrs, &params);
3499 if (err)
3500 return err;
3501
3502 wdev_lock(wdev);
3503 err = rdev_change_beacon(rdev, dev, &params);
3504 wdev_unlock(wdev);
3505
3506 return err;
3507 }
3508
3509 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3510 {
3511 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3512 struct net_device *dev = info->user_ptr[1];
3513
3514 return cfg80211_stop_ap(rdev, dev, false);
3515 }
3516
3517 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3518 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3519 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3520 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3521 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3522 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3523 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3524 };
3525
3526 static int parse_station_flags(struct genl_info *info,
3527 enum nl80211_iftype iftype,
3528 struct station_parameters *params)
3529 {
3530 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3531 struct nlattr *nla;
3532 int flag;
3533
3534 /*
3535 * Try parsing the new attribute first so userspace
3536 * can specify both for older kernels.
3537 */
3538 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3539 if (nla) {
3540 struct nl80211_sta_flag_update *sta_flags;
3541
3542 sta_flags = nla_data(nla);
3543 params->sta_flags_mask = sta_flags->mask;
3544 params->sta_flags_set = sta_flags->set;
3545 params->sta_flags_set &= params->sta_flags_mask;
3546 if ((params->sta_flags_mask |
3547 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3548 return -EINVAL;
3549 return 0;
3550 }
3551
3552 /* if present, parse the old attribute */
3553
3554 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3555 if (!nla)
3556 return 0;
3557
3558 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3559 nla, sta_flags_policy))
3560 return -EINVAL;
3561
3562 /*
3563 * Only allow certain flags for interface types so that
3564 * other attributes are silently ignored. Remember that
3565 * this is backward compatibility code with old userspace
3566 * and shouldn't be hit in other cases anyway.
3567 */
3568 switch (iftype) {
3569 case NL80211_IFTYPE_AP:
3570 case NL80211_IFTYPE_AP_VLAN:
3571 case NL80211_IFTYPE_P2P_GO:
3572 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3573 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3574 BIT(NL80211_STA_FLAG_WME) |
3575 BIT(NL80211_STA_FLAG_MFP);
3576 break;
3577 case NL80211_IFTYPE_P2P_CLIENT:
3578 case NL80211_IFTYPE_STATION:
3579 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3580 BIT(NL80211_STA_FLAG_TDLS_PEER);
3581 break;
3582 case NL80211_IFTYPE_MESH_POINT:
3583 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3584 BIT(NL80211_STA_FLAG_MFP) |
3585 BIT(NL80211_STA_FLAG_AUTHORIZED);
3586 default:
3587 return -EINVAL;
3588 }
3589
3590 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3591 if (flags[flag]) {
3592 params->sta_flags_set |= (1<<flag);
3593
3594 /* no longer support new API additions in old API */
3595 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3596 return -EINVAL;
3597 }
3598 }
3599
3600 return 0;
3601 }
3602
3603 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3604 int attr)
3605 {
3606 struct nlattr *rate;
3607 u32 bitrate;
3608 u16 bitrate_compat;
3609 enum nl80211_attrs rate_flg;
3610
3611 rate = nla_nest_start(msg, attr);
3612 if (!rate)
3613 return false;
3614
3615 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3616 bitrate = cfg80211_calculate_bitrate(info);
3617 /* report 16-bit bitrate only if we can */
3618 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3619 if (bitrate > 0 &&
3620 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3621 return false;
3622 if (bitrate_compat > 0 &&
3623 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3624 return false;
3625
3626 switch (info->bw) {
3627 case RATE_INFO_BW_5:
3628 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3629 break;
3630 case RATE_INFO_BW_10:
3631 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3632 break;
3633 default:
3634 WARN_ON(1);
3635 /* fall through */
3636 case RATE_INFO_BW_20:
3637 rate_flg = 0;
3638 break;
3639 case RATE_INFO_BW_40:
3640 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3641 break;
3642 case RATE_INFO_BW_80:
3643 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3644 break;
3645 case RATE_INFO_BW_160:
3646 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3647 break;
3648 }
3649
3650 if (rate_flg && nla_put_flag(msg, rate_flg))
3651 return false;
3652
3653 if (info->flags & RATE_INFO_FLAGS_MCS) {
3654 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3655 return false;
3656 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3657 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3658 return false;
3659 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3660 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3661 return false;
3662 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3663 return false;
3664 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3665 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3666 return false;
3667 }
3668
3669 nla_nest_end(msg, rate);
3670 return true;
3671 }
3672
3673 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3674 int id)
3675 {
3676 void *attr;
3677 int i = 0;
3678
3679 if (!mask)
3680 return true;
3681
3682 attr = nla_nest_start(msg, id);
3683 if (!attr)
3684 return false;
3685
3686 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3687 if (!(mask & BIT(i)))
3688 continue;
3689
3690 if (nla_put_u8(msg, i, signal[i]))
3691 return false;
3692 }
3693
3694 nla_nest_end(msg, attr);
3695
3696 return true;
3697 }
3698
3699 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3700 u32 seq, int flags,
3701 struct cfg80211_registered_device *rdev,
3702 struct net_device *dev,
3703 const u8 *mac_addr, struct station_info *sinfo)
3704 {
3705 void *hdr;
3706 struct nlattr *sinfoattr, *bss_param;
3707
3708 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3709 if (!hdr)
3710 return -1;
3711
3712 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3713 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3714 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3715 goto nla_put_failure;
3716
3717 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3718 if (!sinfoattr)
3719 goto nla_put_failure;
3720
3721 #define PUT_SINFO(attr, memb, type) do { \
3722 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \
3723 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \
3724 sinfo->memb)) \
3725 goto nla_put_failure; \
3726 } while (0)
3727
3728 PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3729 PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3730
3731 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3732 BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3733 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3734 (u32)sinfo->rx_bytes))
3735 goto nla_put_failure;
3736
3737 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3738 BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3739 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3740 (u32)sinfo->tx_bytes))
3741 goto nla_put_failure;
3742
3743 PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3744 PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3745 PUT_SINFO(LLID, llid, u16);
3746 PUT_SINFO(PLID, plid, u16);
3747 PUT_SINFO(PLINK_STATE, plink_state, u8);
3748
3749 switch (rdev->wiphy.signal_type) {
3750 case CFG80211_SIGNAL_TYPE_MBM:
3751 PUT_SINFO(SIGNAL, signal, u8);
3752 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3753 break;
3754 default:
3755 break;
3756 }
3757 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3758 if (!nl80211_put_signal(msg, sinfo->chains,
3759 sinfo->chain_signal,
3760 NL80211_STA_INFO_CHAIN_SIGNAL))
3761 goto nla_put_failure;
3762 }
3763 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3764 if (!nl80211_put_signal(msg, sinfo->chains,
3765 sinfo->chain_signal_avg,
3766 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3767 goto nla_put_failure;
3768 }
3769 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3770 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3771 NL80211_STA_INFO_TX_BITRATE))
3772 goto nla_put_failure;
3773 }
3774 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3775 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3776 NL80211_STA_INFO_RX_BITRATE))
3777 goto nla_put_failure;
3778 }
3779
3780 PUT_SINFO(RX_PACKETS, rx_packets, u32);
3781 PUT_SINFO(TX_PACKETS, tx_packets, u32);
3782 PUT_SINFO(TX_RETRIES, tx_retries, u32);
3783 PUT_SINFO(TX_FAILED, tx_failed, u32);
3784 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3785 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3786 PUT_SINFO(LOCAL_PM, local_pm, u32);
3787 PUT_SINFO(PEER_PM, peer_pm, u32);
3788 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3789
3790 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3791 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3792 if (!bss_param)
3793 goto nla_put_failure;
3794
3795 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3796 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3797 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3798 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3799 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3800 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3801 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3802 sinfo->bss_param.dtim_period) ||
3803 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3804 sinfo->bss_param.beacon_interval))
3805 goto nla_put_failure;
3806
3807 nla_nest_end(msg, bss_param);
3808 }
3809 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3810 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3811 sizeof(struct nl80211_sta_flag_update),
3812 &sinfo->sta_flags))
3813 goto nla_put_failure;
3814
3815 PUT_SINFO(T_OFFSET, t_offset, u64);
3816 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3817 PUT_SINFO(BEACON_RX, rx_beacon, u64);
3818 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3819
3820 #undef PUT_SINFO
3821
3822 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3823 struct nlattr *tidsattr;
3824 int tid;
3825
3826 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3827 if (!tidsattr)
3828 goto nla_put_failure;
3829
3830 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3831 struct cfg80211_tid_stats *tidstats;
3832 struct nlattr *tidattr;
3833
3834 tidstats = &sinfo->pertid[tid];
3835
3836 if (!tidstats->filled)
3837 continue;
3838
3839 tidattr = nla_nest_start(msg, tid + 1);
3840 if (!tidattr)
3841 goto nla_put_failure;
3842
3843 #define PUT_TIDVAL(attr, memb, type) do { \
3844 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \
3845 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \
3846 tidstats->memb)) \
3847 goto nla_put_failure; \
3848 } while (0)
3849
3850 PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3851 PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3852 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3853 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3854
3855 #undef PUT_TIDVAL
3856 nla_nest_end(msg, tidattr);
3857 }
3858
3859 nla_nest_end(msg, tidsattr);
3860 }
3861
3862 nla_nest_end(msg, sinfoattr);
3863
3864 if (sinfo->assoc_req_ies_len &&
3865 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3866 sinfo->assoc_req_ies))
3867 goto nla_put_failure;
3868
3869 genlmsg_end(msg, hdr);
3870 return 0;
3871
3872 nla_put_failure:
3873 genlmsg_cancel(msg, hdr);
3874 return -EMSGSIZE;
3875 }
3876
3877 static int nl80211_dump_station(struct sk_buff *skb,
3878 struct netlink_callback *cb)
3879 {
3880 struct station_info sinfo;
3881 struct cfg80211_registered_device *rdev;
3882 struct wireless_dev *wdev;
3883 u8 mac_addr[ETH_ALEN];
3884 int sta_idx = cb->args[2];
3885 int err;
3886
3887 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3888 if (err)
3889 return err;
3890
3891 if (!wdev->netdev) {
3892 err = -EINVAL;
3893 goto out_err;
3894 }
3895
3896 if (!rdev->ops->dump_station) {
3897 err = -EOPNOTSUPP;
3898 goto out_err;
3899 }
3900
3901 while (1) {
3902 memset(&sinfo, 0, sizeof(sinfo));
3903 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3904 mac_addr, &sinfo);
3905 if (err == -ENOENT)
3906 break;
3907 if (err)
3908 goto out_err;
3909
3910 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3911 NETLINK_CB(cb->skb).portid,
3912 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3913 rdev, wdev->netdev, mac_addr,
3914 &sinfo) < 0)
3915 goto out;
3916
3917 sta_idx++;
3918 }
3919
3920
3921 out:
3922 cb->args[2] = sta_idx;
3923 err = skb->len;
3924 out_err:
3925 nl80211_finish_wdev_dump(rdev);
3926
3927 return err;
3928 }
3929
3930 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3931 {
3932 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3933 struct net_device *dev = info->user_ptr[1];
3934 struct station_info sinfo;
3935 struct sk_buff *msg;
3936 u8 *mac_addr = NULL;
3937 int err;
3938
3939 memset(&sinfo, 0, sizeof(sinfo));
3940
3941 if (!info->attrs[NL80211_ATTR_MAC])
3942 return -EINVAL;
3943
3944 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3945
3946 if (!rdev->ops->get_station)
3947 return -EOPNOTSUPP;
3948
3949 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3950 if (err)
3951 return err;
3952
3953 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3954 if (!msg)
3955 return -ENOMEM;
3956
3957 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3958 info->snd_portid, info->snd_seq, 0,
3959 rdev, dev, mac_addr, &sinfo) < 0) {
3960 nlmsg_free(msg);
3961 return -ENOBUFS;
3962 }
3963
3964 return genlmsg_reply(msg, info);
3965 }
3966
3967 int cfg80211_check_station_change(struct wiphy *wiphy,
3968 struct station_parameters *params,
3969 enum cfg80211_station_type statype)
3970 {
3971 if (params->listen_interval != -1 &&
3972 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
3973 return -EINVAL;
3974
3975 if (params->aid &&
3976 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
3977 statype != CFG80211_STA_AP_CLIENT_UNASSOC)
3978 return -EINVAL;
3979
3980 /* When you run into this, adjust the code below for the new flag */
3981 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3982
3983 switch (statype) {
3984 case CFG80211_STA_MESH_PEER_KERNEL:
3985 case CFG80211_STA_MESH_PEER_USER:
3986 /*
3987 * No ignoring the TDLS flag here -- the userspace mesh
3988 * code doesn't have the bug of including TDLS in the
3989 * mask everywhere.
3990 */
3991 if (params->sta_flags_mask &
3992 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3993 BIT(NL80211_STA_FLAG_MFP) |
3994 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3995 return -EINVAL;
3996 break;
3997 case CFG80211_STA_TDLS_PEER_SETUP:
3998 case CFG80211_STA_TDLS_PEER_ACTIVE:
3999 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4000 return -EINVAL;
4001 /* ignore since it can't change */
4002 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4003 break;
4004 default:
4005 /* disallow mesh-specific things */
4006 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4007 return -EINVAL;
4008 if (params->local_pm)
4009 return -EINVAL;
4010 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4011 return -EINVAL;
4012 }
4013
4014 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4015 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
4016 /* TDLS can't be set, ... */
4017 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4018 return -EINVAL;
4019 /*
4020 * ... but don't bother the driver with it. This works around
4021 * a hostapd/wpa_supplicant issue -- it always includes the
4022 * TLDS_PEER flag in the mask even for AP mode.
4023 */
4024 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4025 }
4026
4027 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
4028 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4029 /* reject other things that can't change */
4030 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4031 return -EINVAL;
4032 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4033 return -EINVAL;
4034 if (params->supported_rates)
4035 return -EINVAL;
4036 if (params->ext_capab || params->ht_capa || params->vht_capa)
4037 return -EINVAL;
4038 }
4039
4040 if (statype != CFG80211_STA_AP_CLIENT &&
4041 statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
4042 if (params->vlan)
4043 return -EINVAL;
4044 }
4045
4046 switch (statype) {
4047 case CFG80211_STA_AP_MLME_CLIENT:
4048 /* Use this only for authorizing/unauthorizing a station */
4049 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4050 return -EOPNOTSUPP;
4051 break;
4052 case CFG80211_STA_AP_CLIENT:
4053 case CFG80211_STA_AP_CLIENT_UNASSOC:
4054 /* accept only the listed bits */
4055 if (params->sta_flags_mask &
4056 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4057 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4058 BIT(NL80211_STA_FLAG_ASSOCIATED) |
4059 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4060 BIT(NL80211_STA_FLAG_WME) |
4061 BIT(NL80211_STA_FLAG_MFP)))
4062 return -EINVAL;
4063
4064 /* but authenticated/associated only if driver handles it */
4065 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4066 params->sta_flags_mask &
4067 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4068 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4069 return -EINVAL;
4070 break;
4071 case CFG80211_STA_IBSS:
4072 case CFG80211_STA_AP_STA:
4073 /* reject any changes other than AUTHORIZED */
4074 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4075 return -EINVAL;
4076 break;
4077 case CFG80211_STA_TDLS_PEER_SETUP:
4078 /* reject any changes other than AUTHORIZED or WME */
4079 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4080 BIT(NL80211_STA_FLAG_WME)))
4081 return -EINVAL;
4082 /* force (at least) rates when authorizing */
4083 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4084 !params->supported_rates)
4085 return -EINVAL;
4086 break;
4087 case CFG80211_STA_TDLS_PEER_ACTIVE:
4088 /* reject any changes */
4089 return -EINVAL;
4090 case CFG80211_STA_MESH_PEER_KERNEL:
4091 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4092 return -EINVAL;
4093 break;
4094 case CFG80211_STA_MESH_PEER_USER:
4095 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4096 params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4097 return -EINVAL;
4098 break;
4099 }
4100
4101 return 0;
4102 }
4103 EXPORT_SYMBOL(cfg80211_check_station_change);
4104
4105 /*
4106 * Get vlan interface making sure it is running and on the right wiphy.
4107 */
4108 static struct net_device *get_vlan(struct genl_info *info,
4109 struct cfg80211_registered_device *rdev)
4110 {
4111 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4112 struct net_device *v;
4113 int ret;
4114
4115 if (!vlanattr)
4116 return NULL;
4117
4118 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4119 if (!v)
4120 return ERR_PTR(-ENODEV);
4121
4122 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4123 ret = -EINVAL;
4124 goto error;
4125 }
4126
4127 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4128 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4129 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4130 ret = -EINVAL;
4131 goto error;
4132 }
4133
4134 if (!netif_running(v)) {
4135 ret = -ENETDOWN;
4136 goto error;
4137 }
4138
4139 return v;
4140 error:
4141 dev_put(v);
4142 return ERR_PTR(ret);
4143 }
4144
4145 static const struct nla_policy
4146 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4147 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4148 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4149 };
4150
4151 static int nl80211_parse_sta_wme(struct genl_info *info,
4152 struct station_parameters *params)
4153 {
4154 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4155 struct nlattr *nla;
4156 int err;
4157
4158 /* parse WME attributes if present */
4159 if (!info->attrs[NL80211_ATTR_STA_WME])
4160 return 0;
4161
4162 nla = info->attrs[NL80211_ATTR_STA_WME];
4163 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4164 nl80211_sta_wme_policy);
4165 if (err)
4166 return err;
4167
4168 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4169 params->uapsd_queues = nla_get_u8(
4170 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4171 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4172 return -EINVAL;
4173
4174 if (tb[NL80211_STA_WME_MAX_SP])
4175 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4176
4177 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4178 return -EINVAL;
4179
4180 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4181
4182 return 0;
4183 }
4184
4185 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4186 struct station_parameters *params)
4187 {
4188 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4189 params->supported_channels =
4190 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4191 params->supported_channels_len =
4192 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4193 /*
4194 * Need to include at least one (first channel, number of
4195 * channels) tuple for each subband, and must have proper
4196 * tuples for the rest of the data as well.
4197 */
4198 if (params->supported_channels_len < 2)
4199 return -EINVAL;
4200 if (params->supported_channels_len % 2)
4201 return -EINVAL;
4202 }
4203
4204 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4205 params->supported_oper_classes =
4206 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4207 params->supported_oper_classes_len =
4208 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4209 /*
4210 * The value of the Length field of the Supported Operating
4211 * Classes element is between 2 and 253.
4212 */
4213 if (params->supported_oper_classes_len < 2 ||
4214 params->supported_oper_classes_len > 253)
4215 return -EINVAL;
4216 }
4217 return 0;
4218 }
4219
4220 static int nl80211_set_station_tdls(struct genl_info *info,
4221 struct station_parameters *params)
4222 {
4223 int err;
4224 /* Dummy STA entry gets updated once the peer capabilities are known */
4225 if (info->attrs[NL80211_ATTR_PEER_AID])
4226 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4227 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4228 params->ht_capa =
4229 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4230 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4231 params->vht_capa =
4232 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4233
4234 err = nl80211_parse_sta_channel_info(info, params);
4235 if (err)
4236 return err;
4237
4238 return nl80211_parse_sta_wme(info, params);
4239 }
4240
4241 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4242 {
4243 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4244 struct net_device *dev = info->user_ptr[1];
4245 struct station_parameters params;
4246 u8 *mac_addr;
4247 int err;
4248
4249 memset(&params, 0, sizeof(params));
4250
4251 if (!rdev->ops->change_station)
4252 return -EOPNOTSUPP;
4253
4254 /*
4255 * AID and listen_interval properties can be set only for unassociated
4256 * station. Include these parameters here and will check them in
4257 * cfg80211_check_station_change().
4258 */
4259 if (info->attrs[NL80211_ATTR_STA_AID])
4260 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4261
4262 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4263 params.listen_interval =
4264 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4265 else
4266 params.listen_interval = -1;
4267
4268 if (!info->attrs[NL80211_ATTR_MAC])
4269 return -EINVAL;
4270
4271 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4272
4273 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4274 params.supported_rates =
4275 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4276 params.supported_rates_len =
4277 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4278 }
4279
4280 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4281 params.capability =
4282 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4283 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4284 }
4285
4286 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4287 params.ext_capab =
4288 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4289 params.ext_capab_len =
4290 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4291 }
4292
4293 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4294 return -EINVAL;
4295
4296 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4297 params.plink_action =
4298 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4299 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4300 return -EINVAL;
4301 }
4302
4303 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4304 params.plink_state =
4305 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4306 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4307 return -EINVAL;
4308 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4309 }
4310
4311 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4312 enum nl80211_mesh_power_mode pm = nla_get_u32(
4313 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4314
4315 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4316 pm > NL80211_MESH_POWER_MAX)
4317 return -EINVAL;
4318
4319 params.local_pm = pm;
4320 }
4321
4322 /* Include parameters for TDLS peer (will check later) */
4323 err = nl80211_set_station_tdls(info, &params);
4324 if (err)
4325 return err;
4326
4327 params.vlan = get_vlan(info, rdev);
4328 if (IS_ERR(params.vlan))
4329 return PTR_ERR(params.vlan);
4330
4331 switch (dev->ieee80211_ptr->iftype) {
4332 case NL80211_IFTYPE_AP:
4333 case NL80211_IFTYPE_AP_VLAN:
4334 case NL80211_IFTYPE_P2P_GO:
4335 case NL80211_IFTYPE_P2P_CLIENT:
4336 case NL80211_IFTYPE_STATION:
4337 case NL80211_IFTYPE_ADHOC:
4338 case NL80211_IFTYPE_MESH_POINT:
4339 break;
4340 default:
4341 err = -EOPNOTSUPP;
4342 goto out_put_vlan;
4343 }
4344
4345 /* driver will call cfg80211_check_station_change() */
4346 err = rdev_change_station(rdev, dev, mac_addr, &params);
4347
4348 out_put_vlan:
4349 if (params.vlan)
4350 dev_put(params.vlan);
4351
4352 return err;
4353 }
4354
4355 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4356 {
4357 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4358 int err;
4359 struct net_device *dev = info->user_ptr[1];
4360 struct station_parameters params;
4361 u8 *mac_addr = NULL;
4362 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4363 BIT(NL80211_STA_FLAG_ASSOCIATED);
4364
4365 memset(&params, 0, sizeof(params));
4366
4367 if (!rdev->ops->add_station)
4368 return -EOPNOTSUPP;
4369
4370 if (!info->attrs[NL80211_ATTR_MAC])
4371 return -EINVAL;
4372
4373 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4374 return -EINVAL;
4375
4376 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4377 return -EINVAL;
4378
4379 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4380 !info->attrs[NL80211_ATTR_PEER_AID])
4381 return -EINVAL;
4382
4383 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4384 params.supported_rates =
4385 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4386 params.supported_rates_len =
4387 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4388 params.listen_interval =
4389 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4390
4391 if (info->attrs[NL80211_ATTR_PEER_AID])
4392 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4393 else
4394 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4395 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4396 return -EINVAL;
4397
4398 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4399 params.capability =
4400 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4401 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4402 }
4403
4404 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4405 params.ext_capab =
4406 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4407 params.ext_capab_len =
4408 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4409 }
4410
4411 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4412 params.ht_capa =
4413 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4414
4415 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4416 params.vht_capa =
4417 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4418
4419 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4420 params.opmode_notif_used = true;
4421 params.opmode_notif =
4422 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4423 }
4424
4425 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4426 params.plink_action =
4427 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4428 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4429 return -EINVAL;
4430 }
4431
4432 err = nl80211_parse_sta_channel_info(info, &params);
4433 if (err)
4434 return err;
4435
4436 err = nl80211_parse_sta_wme(info, &params);
4437 if (err)
4438 return err;
4439
4440 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4441 return -EINVAL;
4442
4443 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4444 * as userspace might just pass through the capabilities from the IEs
4445 * directly, rather than enforcing this restriction and returning an
4446 * error in this case.
4447 */
4448 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4449 params.ht_capa = NULL;
4450 params.vht_capa = NULL;
4451 }
4452
4453 /* When you run into this, adjust the code below for the new flag */
4454 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4455
4456 switch (dev->ieee80211_ptr->iftype) {
4457 case NL80211_IFTYPE_AP:
4458 case NL80211_IFTYPE_AP_VLAN:
4459 case NL80211_IFTYPE_P2P_GO:
4460 /* ignore WME attributes if iface/sta is not capable */
4461 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4462 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4463 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4464
4465 /* TDLS peers cannot be added */
4466 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4467 info->attrs[NL80211_ATTR_PEER_AID])
4468 return -EINVAL;
4469 /* but don't bother the driver with it */
4470 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4471
4472 /* allow authenticated/associated only if driver handles it */
4473 if (!(rdev->wiphy.features &
4474 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4475 params.sta_flags_mask & auth_assoc)
4476 return -EINVAL;
4477
4478 /* Older userspace, or userspace wanting to be compatible with
4479 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
4480 * and assoc flags in the mask, but assumes the station will be
4481 * added as associated anyway since this was the required driver
4482 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
4483 * introduced.
4484 * In order to not bother drivers with this quirk in the API
4485 * set the flags in both the mask and set for new stations in
4486 * this case.
4487 */
4488 if (!(params.sta_flags_mask & auth_assoc)) {
4489 params.sta_flags_mask |= auth_assoc;
4490 params.sta_flags_set |= auth_assoc;
4491 }
4492
4493 /* must be last in here for error handling */
4494 params.vlan = get_vlan(info, rdev);
4495 if (IS_ERR(params.vlan))
4496 return PTR_ERR(params.vlan);
4497 break;
4498 case NL80211_IFTYPE_MESH_POINT:
4499 /* ignore uAPSD data */
4500 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4501
4502 /* associated is disallowed */
4503 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4504 return -EINVAL;
4505 /* TDLS peers cannot be added */
4506 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4507 info->attrs[NL80211_ATTR_PEER_AID])
4508 return -EINVAL;
4509 break;
4510 case NL80211_IFTYPE_STATION:
4511 case NL80211_IFTYPE_P2P_CLIENT:
4512 /* ignore uAPSD data */
4513 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4514
4515 /* these are disallowed */
4516 if (params.sta_flags_mask &
4517 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4518 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4519 return -EINVAL;
4520 /* Only TDLS peers can be added */
4521 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4522 return -EINVAL;
4523 /* Can only add if TDLS ... */
4524 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4525 return -EOPNOTSUPP;
4526 /* ... with external setup is supported */
4527 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4528 return -EOPNOTSUPP;
4529 /*
4530 * Older wpa_supplicant versions always mark the TDLS peer
4531 * as authorized, but it shouldn't yet be.
4532 */
4533 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4534 break;
4535 default:
4536 return -EOPNOTSUPP;
4537 }
4538
4539 /* be aware of params.vlan when changing code here */
4540
4541 err = rdev_add_station(rdev, dev, mac_addr, &params);
4542
4543 if (params.vlan)
4544 dev_put(params.vlan);
4545 return err;
4546 }
4547
4548 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4549 {
4550 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4551 struct net_device *dev = info->user_ptr[1];
4552 struct station_del_parameters params;
4553
4554 memset(&params, 0, sizeof(params));
4555
4556 if (info->attrs[NL80211_ATTR_MAC])
4557 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4558
4559 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4560 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4561 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4562 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4563 return -EINVAL;
4564
4565 if (!rdev->ops->del_station)
4566 return -EOPNOTSUPP;
4567
4568 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4569 params.subtype =
4570 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4571 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4572 params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4573 return -EINVAL;
4574 } else {
4575 /* Default to Deauthentication frame */
4576 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4577 }
4578
4579 if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4580 params.reason_code =
4581 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4582 if (params.reason_code == 0)
4583 return -EINVAL; /* 0 is reserved */
4584 } else {
4585 /* Default to reason code 2 */
4586 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4587 }
4588
4589 return rdev_del_station(rdev, dev, &params);
4590 }
4591
4592 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4593 int flags, struct net_device *dev,
4594 u8 *dst, u8 *next_hop,
4595 struct mpath_info *pinfo)
4596 {
4597 void *hdr;
4598 struct nlattr *pinfoattr;
4599
4600 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4601 if (!hdr)
4602 return -1;
4603
4604 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4605 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4606 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4607 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4608 goto nla_put_failure;
4609
4610 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4611 if (!pinfoattr)
4612 goto nla_put_failure;
4613 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4614 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4615 pinfo->frame_qlen))
4616 goto nla_put_failure;
4617 if (((pinfo->filled & MPATH_INFO_SN) &&
4618 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4619 ((pinfo->filled & MPATH_INFO_METRIC) &&
4620 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4621 pinfo->metric)) ||
4622 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4623 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4624 pinfo->exptime)) ||
4625 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4626 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4627 pinfo->flags)) ||
4628 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4629 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4630 pinfo->discovery_timeout)) ||
4631 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4632 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4633 pinfo->discovery_retries)))
4634 goto nla_put_failure;
4635
4636 nla_nest_end(msg, pinfoattr);
4637
4638 genlmsg_end(msg, hdr);
4639 return 0;
4640
4641 nla_put_failure:
4642 genlmsg_cancel(msg, hdr);
4643 return -EMSGSIZE;
4644 }
4645
4646 static int nl80211_dump_mpath(struct sk_buff *skb,
4647 struct netlink_callback *cb)
4648 {
4649 struct mpath_info pinfo;
4650 struct cfg80211_registered_device *rdev;
4651 struct wireless_dev *wdev;
4652 u8 dst[ETH_ALEN];
4653 u8 next_hop[ETH_ALEN];
4654 int path_idx = cb->args[2];
4655 int err;
4656
4657 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4658 if (err)
4659 return err;
4660
4661 if (!rdev->ops->dump_mpath) {
4662 err = -EOPNOTSUPP;
4663 goto out_err;
4664 }
4665
4666 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4667 err = -EOPNOTSUPP;
4668 goto out_err;
4669 }
4670
4671 while (1) {
4672 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4673 next_hop, &pinfo);
4674 if (err == -ENOENT)
4675 break;
4676 if (err)
4677 goto out_err;
4678
4679 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4680 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4681 wdev->netdev, dst, next_hop,
4682 &pinfo) < 0)
4683 goto out;
4684
4685 path_idx++;
4686 }
4687
4688
4689 out:
4690 cb->args[2] = path_idx;
4691 err = skb->len;
4692 out_err:
4693 nl80211_finish_wdev_dump(rdev);
4694 return err;
4695 }
4696
4697 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4698 {
4699 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4700 int err;
4701 struct net_device *dev = info->user_ptr[1];
4702 struct mpath_info pinfo;
4703 struct sk_buff *msg;
4704 u8 *dst = NULL;
4705 u8 next_hop[ETH_ALEN];
4706
4707 memset(&pinfo, 0, sizeof(pinfo));
4708
4709 if (!info->attrs[NL80211_ATTR_MAC])
4710 return -EINVAL;
4711
4712 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4713
4714 if (!rdev->ops->get_mpath)
4715 return -EOPNOTSUPP;
4716
4717 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4718 return -EOPNOTSUPP;
4719
4720 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4721 if (err)
4722 return err;
4723
4724 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4725 if (!msg)
4726 return -ENOMEM;
4727
4728 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4729 dev, dst, next_hop, &pinfo) < 0) {
4730 nlmsg_free(msg);
4731 return -ENOBUFS;
4732 }
4733
4734 return genlmsg_reply(msg, info);
4735 }
4736
4737 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4738 {
4739 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4740 struct net_device *dev = info->user_ptr[1];
4741 u8 *dst = NULL;
4742 u8 *next_hop = NULL;
4743
4744 if (!info->attrs[NL80211_ATTR_MAC])
4745 return -EINVAL;
4746
4747 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4748 return -EINVAL;
4749
4750 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4751 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4752
4753 if (!rdev->ops->change_mpath)
4754 return -EOPNOTSUPP;
4755
4756 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4757 return -EOPNOTSUPP;
4758
4759 return rdev_change_mpath(rdev, dev, dst, next_hop);
4760 }
4761
4762 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4763 {
4764 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4765 struct net_device *dev = info->user_ptr[1];
4766 u8 *dst = NULL;
4767 u8 *next_hop = NULL;
4768
4769 if (!info->attrs[NL80211_ATTR_MAC])
4770 return -EINVAL;
4771
4772 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4773 return -EINVAL;
4774
4775 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4776 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4777
4778 if (!rdev->ops->add_mpath)
4779 return -EOPNOTSUPP;
4780
4781 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4782 return -EOPNOTSUPP;
4783
4784 return rdev_add_mpath(rdev, dev, dst, next_hop);
4785 }
4786
4787 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4788 {
4789 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4790 struct net_device *dev = info->user_ptr[1];
4791 u8 *dst = NULL;
4792
4793 if (info->attrs[NL80211_ATTR_MAC])
4794 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4795
4796 if (!rdev->ops->del_mpath)
4797 return -EOPNOTSUPP;
4798
4799 return rdev_del_mpath(rdev, dev, dst);
4800 }
4801
4802 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4803 {
4804 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4805 int err;
4806 struct net_device *dev = info->user_ptr[1];
4807 struct mpath_info pinfo;
4808 struct sk_buff *msg;
4809 u8 *dst = NULL;
4810 u8 mpp[ETH_ALEN];
4811
4812 memset(&pinfo, 0, sizeof(pinfo));
4813
4814 if (!info->attrs[NL80211_ATTR_MAC])
4815 return -EINVAL;
4816
4817 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4818
4819 if (!rdev->ops->get_mpp)
4820 return -EOPNOTSUPP;
4821
4822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4823 return -EOPNOTSUPP;
4824
4825 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4826 if (err)
4827 return err;
4828
4829 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4830 if (!msg)
4831 return -ENOMEM;
4832
4833 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4834 dev, dst, mpp, &pinfo) < 0) {
4835 nlmsg_free(msg);
4836 return -ENOBUFS;
4837 }
4838
4839 return genlmsg_reply(msg, info);
4840 }
4841
4842 static int nl80211_dump_mpp(struct sk_buff *skb,
4843 struct netlink_callback *cb)
4844 {
4845 struct mpath_info pinfo;
4846 struct cfg80211_registered_device *rdev;
4847 struct wireless_dev *wdev;
4848 u8 dst[ETH_ALEN];
4849 u8 mpp[ETH_ALEN];
4850 int path_idx = cb->args[2];
4851 int err;
4852
4853 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4854 if (err)
4855 return err;
4856
4857 if (!rdev->ops->dump_mpp) {
4858 err = -EOPNOTSUPP;
4859 goto out_err;
4860 }
4861
4862 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4863 err = -EOPNOTSUPP;
4864 goto out_err;
4865 }
4866
4867 while (1) {
4868 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4869 mpp, &pinfo);
4870 if (err == -ENOENT)
4871 break;
4872 if (err)
4873 goto out_err;
4874
4875 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4876 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4877 wdev->netdev, dst, mpp,
4878 &pinfo) < 0)
4879 goto out;
4880
4881 path_idx++;
4882 }
4883
4884 out:
4885 cb->args[2] = path_idx;
4886 err = skb->len;
4887 out_err:
4888 nl80211_finish_wdev_dump(rdev);
4889 return err;
4890 }
4891
4892 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4893 {
4894 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4895 struct net_device *dev = info->user_ptr[1];
4896 struct wireless_dev *wdev = dev->ieee80211_ptr;
4897 struct bss_parameters params;
4898 int err;
4899
4900 memset(&params, 0, sizeof(params));
4901 /* default to not changing parameters */
4902 params.use_cts_prot = -1;
4903 params.use_short_preamble = -1;
4904 params.use_short_slot_time = -1;
4905 params.ap_isolate = -1;
4906 params.ht_opmode = -1;
4907 params.p2p_ctwindow = -1;
4908 params.p2p_opp_ps = -1;
4909
4910 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4911 params.use_cts_prot =
4912 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4913 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4914 params.use_short_preamble =
4915 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4916 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4917 params.use_short_slot_time =
4918 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4919 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4920 params.basic_rates =
4921 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4922 params.basic_rates_len =
4923 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4924 }
4925 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4926 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4927 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4928 params.ht_opmode =
4929 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4930
4931 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4932 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4933 return -EINVAL;
4934 params.p2p_ctwindow =
4935 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4936 if (params.p2p_ctwindow < 0)
4937 return -EINVAL;
4938 if (params.p2p_ctwindow != 0 &&
4939 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4940 return -EINVAL;
4941 }
4942
4943 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4944 u8 tmp;
4945
4946 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4947 return -EINVAL;
4948 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4949 if (tmp > 1)
4950 return -EINVAL;
4951 params.p2p_opp_ps = tmp;
4952 if (params.p2p_opp_ps &&
4953 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4954 return -EINVAL;
4955 }
4956
4957 if (!rdev->ops->change_bss)
4958 return -EOPNOTSUPP;
4959
4960 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4961 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4962 return -EOPNOTSUPP;
4963
4964 wdev_lock(wdev);
4965 err = rdev_change_bss(rdev, dev, &params);
4966 wdev_unlock(wdev);
4967
4968 return err;
4969 }
4970
4971 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4972 {
4973 char *data = NULL;
4974 bool is_indoor;
4975 enum nl80211_user_reg_hint_type user_reg_hint_type;
4976 u32 owner_nlportid;
4977
4978
4979 /*
4980 * You should only get this when cfg80211 hasn't yet initialized
4981 * completely when built-in to the kernel right between the time
4982 * window between nl80211_init() and regulatory_init(), if that is
4983 * even possible.
4984 */
4985 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4986 return -EINPROGRESS;
4987
4988 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4989 user_reg_hint_type =
4990 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4991 else
4992 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4993
4994 switch (user_reg_hint_type) {
4995 case NL80211_USER_REG_HINT_USER:
4996 case NL80211_USER_REG_HINT_CELL_BASE:
4997 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4998 return -EINVAL;
4999
5000 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5001 return regulatory_hint_user(data, user_reg_hint_type);
5002 case NL80211_USER_REG_HINT_INDOOR:
5003 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5004 owner_nlportid = info->snd_portid;
5005 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5006 } else {
5007 owner_nlportid = 0;
5008 is_indoor = true;
5009 }
5010
5011 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5012 default:
5013 return -EINVAL;
5014 }
5015 }
5016
5017 static int nl80211_get_mesh_config(struct sk_buff *skb,
5018 struct genl_info *info)
5019 {
5020 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5021 struct net_device *dev = info->user_ptr[1];
5022 struct wireless_dev *wdev = dev->ieee80211_ptr;
5023 struct mesh_config cur_params;
5024 int err = 0;
5025 void *hdr;
5026 struct nlattr *pinfoattr;
5027 struct sk_buff *msg;
5028
5029 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5030 return -EOPNOTSUPP;
5031
5032 if (!rdev->ops->get_mesh_config)
5033 return -EOPNOTSUPP;
5034
5035 wdev_lock(wdev);
5036 /* If not connected, get default parameters */
5037 if (!wdev->mesh_id_len)
5038 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5039 else
5040 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5041 wdev_unlock(wdev);
5042
5043 if (err)
5044 return err;
5045
5046 /* Draw up a netlink message to send back */
5047 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5048 if (!msg)
5049 return -ENOMEM;
5050 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5051 NL80211_CMD_GET_MESH_CONFIG);
5052 if (!hdr)
5053 goto out;
5054 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5055 if (!pinfoattr)
5056 goto nla_put_failure;
5057 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5058 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5059 cur_params.dot11MeshRetryTimeout) ||
5060 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5061 cur_params.dot11MeshConfirmTimeout) ||
5062 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5063 cur_params.dot11MeshHoldingTimeout) ||
5064 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5065 cur_params.dot11MeshMaxPeerLinks) ||
5066 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5067 cur_params.dot11MeshMaxRetries) ||
5068 nla_put_u8(msg, NL80211_MESHCONF_TTL,
5069 cur_params.dot11MeshTTL) ||
5070 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5071 cur_params.element_ttl) ||
5072 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5073 cur_params.auto_open_plinks) ||
5074 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5075 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5076 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5077 cur_params.dot11MeshHWMPmaxPREQretries) ||
5078 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5079 cur_params.path_refresh_time) ||
5080 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5081 cur_params.min_discovery_timeout) ||
5082 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5083 cur_params.dot11MeshHWMPactivePathTimeout) ||
5084 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5085 cur_params.dot11MeshHWMPpreqMinInterval) ||
5086 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5087 cur_params.dot11MeshHWMPperrMinInterval) ||
5088 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5089 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5090 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5091 cur_params.dot11MeshHWMPRootMode) ||
5092 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5093 cur_params.dot11MeshHWMPRannInterval) ||
5094 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5095 cur_params.dot11MeshGateAnnouncementProtocol) ||
5096 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5097 cur_params.dot11MeshForwarding) ||
5098 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5099 cur_params.rssi_threshold) ||
5100 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5101 cur_params.ht_opmode) ||
5102 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5103 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5104 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5105 cur_params.dot11MeshHWMProotInterval) ||
5106 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5107 cur_params.dot11MeshHWMPconfirmationInterval) ||
5108 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5109 cur_params.power_mode) ||
5110 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5111 cur_params.dot11MeshAwakeWindowDuration) ||
5112 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5113 cur_params.plink_timeout))
5114 goto nla_put_failure;
5115 nla_nest_end(msg, pinfoattr);
5116 genlmsg_end(msg, hdr);
5117 return genlmsg_reply(msg, info);
5118
5119 nla_put_failure:
5120 genlmsg_cancel(msg, hdr);
5121 out:
5122 nlmsg_free(msg);
5123 return -ENOBUFS;
5124 }
5125
5126 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5127 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5128 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5129 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5130 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5131 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5132 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5133 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5134 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5135 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5136 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5137 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5138 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5139 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5140 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5141 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5142 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5143 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5144 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5145 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5146 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5147 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5148 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5149 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5150 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5151 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5152 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5153 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5154 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5155 };
5156
5157 static const struct nla_policy
5158 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5159 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5160 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5161 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5162 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5163 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5164 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5165 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5166 .len = IEEE80211_MAX_DATA_LEN },
5167 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5168 };
5169
5170 static int nl80211_parse_mesh_config(struct genl_info *info,
5171 struct mesh_config *cfg,
5172 u32 *mask_out)
5173 {
5174 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5175 u32 mask = 0;
5176
5177 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5178 do { \
5179 if (tb[attr]) { \
5180 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
5181 return -EINVAL; \
5182 cfg->param = fn(tb[attr]); \
5183 mask |= (1 << (attr - 1)); \
5184 } \
5185 } while (0)
5186
5187
5188 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5189 return -EINVAL;
5190 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5191 info->attrs[NL80211_ATTR_MESH_CONFIG],
5192 nl80211_meshconf_params_policy))
5193 return -EINVAL;
5194
5195 /* This makes sure that there aren't more than 32 mesh config
5196 * parameters (otherwise our bitfield scheme would not work.) */
5197 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5198
5199 /* Fill in the params struct */
5200 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5201 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5202 nla_get_u16);
5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5204 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5205 nla_get_u16);
5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5207 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5208 nla_get_u16);
5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5210 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5211 nla_get_u16);
5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5213 mask, NL80211_MESHCONF_MAX_RETRIES,
5214 nla_get_u8);
5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5216 mask, NL80211_MESHCONF_TTL, nla_get_u8);
5217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5218 mask, NL80211_MESHCONF_ELEMENT_TTL,
5219 nla_get_u8);
5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5221 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5222 nla_get_u8);
5223 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5224 1, 255, mask,
5225 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5226 nla_get_u32);
5227 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5228 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5229 nla_get_u8);
5230 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5231 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5232 nla_get_u32);
5233 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5234 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5235 nla_get_u16);
5236 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5237 1, 65535, mask,
5238 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5239 nla_get_u32);
5240 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5241 1, 65535, mask,
5242 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5243 nla_get_u16);
5244 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5245 1, 65535, mask,
5246 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5247 nla_get_u16);
5248 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5249 dot11MeshHWMPnetDiameterTraversalTime,
5250 1, 65535, mask,
5251 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5252 nla_get_u16);
5253 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5254 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5255 nla_get_u8);
5256 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5257 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5258 nla_get_u16);
5259 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5260 dot11MeshGateAnnouncementProtocol, 0, 1,
5261 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5262 nla_get_u8);
5263 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5264 mask, NL80211_MESHCONF_FORWARDING,
5265 nla_get_u8);
5266 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5267 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5268 nla_get_s32);
5269 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5270 mask, NL80211_MESHCONF_HT_OPMODE,
5271 nla_get_u16);
5272 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5273 1, 65535, mask,
5274 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5275 nla_get_u32);
5276 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5277 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5278 nla_get_u16);
5279 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5280 dot11MeshHWMPconfirmationInterval,
5281 1, 65535, mask,
5282 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5283 nla_get_u16);
5284 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5285 NL80211_MESH_POWER_ACTIVE,
5286 NL80211_MESH_POWER_MAX,
5287 mask, NL80211_MESHCONF_POWER_MODE,
5288 nla_get_u32);
5289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5290 0, 65535, mask,
5291 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5292 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5293 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5294 nla_get_u32);
5295 if (mask_out)
5296 *mask_out = mask;
5297
5298 return 0;
5299
5300 #undef FILL_IN_MESH_PARAM_IF_SET
5301 }
5302
5303 static int nl80211_parse_mesh_setup(struct genl_info *info,
5304 struct mesh_setup *setup)
5305 {
5306 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5307 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5308
5309 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5310 return -EINVAL;
5311 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5312 info->attrs[NL80211_ATTR_MESH_SETUP],
5313 nl80211_mesh_setup_params_policy))
5314 return -EINVAL;
5315
5316 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5317 setup->sync_method =
5318 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5319 IEEE80211_SYNC_METHOD_VENDOR :
5320 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5321
5322 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5323 setup->path_sel_proto =
5324 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5325 IEEE80211_PATH_PROTOCOL_VENDOR :
5326 IEEE80211_PATH_PROTOCOL_HWMP;
5327
5328 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5329 setup->path_metric =
5330 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5331 IEEE80211_PATH_METRIC_VENDOR :
5332 IEEE80211_PATH_METRIC_AIRTIME;
5333
5334
5335 if (tb[NL80211_MESH_SETUP_IE]) {
5336 struct nlattr *ieattr =
5337 tb[NL80211_MESH_SETUP_IE];
5338 if (!is_valid_ie_attr(ieattr))
5339 return -EINVAL;
5340 setup->ie = nla_data(ieattr);
5341 setup->ie_len = nla_len(ieattr);
5342 }
5343 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5344 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5345 return -EINVAL;
5346 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5347 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5348 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5349 if (setup->is_secure)
5350 setup->user_mpm = true;
5351
5352 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5353 if (!setup->user_mpm)
5354 return -EINVAL;
5355 setup->auth_id =
5356 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5357 }
5358
5359 return 0;
5360 }
5361
5362 static int nl80211_update_mesh_config(struct sk_buff *skb,
5363 struct genl_info *info)
5364 {
5365 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5366 struct net_device *dev = info->user_ptr[1];
5367 struct wireless_dev *wdev = dev->ieee80211_ptr;
5368 struct mesh_config cfg;
5369 u32 mask;
5370 int err;
5371
5372 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5373 return -EOPNOTSUPP;
5374
5375 if (!rdev->ops->update_mesh_config)
5376 return -EOPNOTSUPP;
5377
5378 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5379 if (err)
5380 return err;
5381
5382 wdev_lock(wdev);
5383 if (!wdev->mesh_id_len)
5384 err = -ENOLINK;
5385
5386 if (!err)
5387 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5388
5389 wdev_unlock(wdev);
5390
5391 return err;
5392 }
5393
5394 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5395 struct sk_buff *msg)
5396 {
5397 struct nlattr *nl_reg_rules;
5398 unsigned int i;
5399
5400 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5401 (regdom->dfs_region &&
5402 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5403 goto nla_put_failure;
5404
5405 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5406 if (!nl_reg_rules)
5407 goto nla_put_failure;
5408
5409 for (i = 0; i < regdom->n_reg_rules; i++) {
5410 struct nlattr *nl_reg_rule;
5411 const struct ieee80211_reg_rule *reg_rule;
5412 const struct ieee80211_freq_range *freq_range;
5413 const struct ieee80211_power_rule *power_rule;
5414 unsigned int max_bandwidth_khz;
5415
5416 reg_rule = &regdom->reg_rules[i];
5417 freq_range = &reg_rule->freq_range;
5418 power_rule = &reg_rule->power_rule;
5419
5420 nl_reg_rule = nla_nest_start(msg, i);
5421 if (!nl_reg_rule)
5422 goto nla_put_failure;
5423
5424 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5425 if (!max_bandwidth_khz)
5426 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5427 reg_rule);
5428
5429 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5430 reg_rule->flags) ||
5431 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5432 freq_range->start_freq_khz) ||
5433 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5434 freq_range->end_freq_khz) ||
5435 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5436 max_bandwidth_khz) ||
5437 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5438 power_rule->max_antenna_gain) ||
5439 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5440 power_rule->max_eirp) ||
5441 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5442 reg_rule->dfs_cac_ms))
5443 goto nla_put_failure;
5444
5445 nla_nest_end(msg, nl_reg_rule);
5446 }
5447
5448 nla_nest_end(msg, nl_reg_rules);
5449 return 0;
5450
5451 nla_put_failure:
5452 return -EMSGSIZE;
5453 }
5454
5455 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5456 {
5457 const struct ieee80211_regdomain *regdom = NULL;
5458 struct cfg80211_registered_device *rdev;
5459 struct wiphy *wiphy = NULL;
5460 struct sk_buff *msg;
5461 void *hdr;
5462
5463 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5464 if (!msg)
5465 return -ENOBUFS;
5466
5467 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5468 NL80211_CMD_GET_REG);
5469 if (!hdr)
5470 goto put_failure;
5471
5472 if (info->attrs[NL80211_ATTR_WIPHY]) {
5473 bool self_managed;
5474
5475 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5476 if (IS_ERR(rdev)) {
5477 nlmsg_free(msg);
5478 return PTR_ERR(rdev);
5479 }
5480
5481 wiphy = &rdev->wiphy;
5482 self_managed = wiphy->regulatory_flags &
5483 REGULATORY_WIPHY_SELF_MANAGED;
5484 regdom = get_wiphy_regdom(wiphy);
5485
5486 /* a self-managed-reg device must have a private regdom */
5487 if (WARN_ON(!regdom && self_managed)) {
5488 nlmsg_free(msg);
5489 return -EINVAL;
5490 }
5491
5492 if (regdom &&
5493 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5494 goto nla_put_failure;
5495 }
5496
5497 if (!wiphy && reg_last_request_cell_base() &&
5498 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5499 NL80211_USER_REG_HINT_CELL_BASE))
5500 goto nla_put_failure;
5501
5502 rcu_read_lock();
5503
5504 if (!regdom)
5505 regdom = rcu_dereference(cfg80211_regdomain);
5506
5507 if (nl80211_put_regdom(regdom, msg))
5508 goto nla_put_failure_rcu;
5509
5510 rcu_read_unlock();
5511
5512 genlmsg_end(msg, hdr);
5513 return genlmsg_reply(msg, info);
5514
5515 nla_put_failure_rcu:
5516 rcu_read_unlock();
5517 nla_put_failure:
5518 genlmsg_cancel(msg, hdr);
5519 put_failure:
5520 nlmsg_free(msg);
5521 return -EMSGSIZE;
5522 }
5523
5524 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5525 u32 seq, int flags, struct wiphy *wiphy,
5526 const struct ieee80211_regdomain *regdom)
5527 {
5528 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5529 NL80211_CMD_GET_REG);
5530
5531 if (!hdr)
5532 return -1;
5533
5534 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5535
5536 if (nl80211_put_regdom(regdom, msg))
5537 goto nla_put_failure;
5538
5539 if (!wiphy && reg_last_request_cell_base() &&
5540 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5541 NL80211_USER_REG_HINT_CELL_BASE))
5542 goto nla_put_failure;
5543
5544 if (wiphy &&
5545 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5546 goto nla_put_failure;
5547
5548 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5549 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5550 goto nla_put_failure;
5551
5552 genlmsg_end(msg, hdr);
5553 return 0;
5554
5555 nla_put_failure:
5556 genlmsg_cancel(msg, hdr);
5557 return -EMSGSIZE;
5558 }
5559
5560 static int nl80211_get_reg_dump(struct sk_buff *skb,
5561 struct netlink_callback *cb)
5562 {
5563 const struct ieee80211_regdomain *regdom = NULL;
5564 struct cfg80211_registered_device *rdev;
5565 int err, reg_idx, start = cb->args[2];
5566
5567 rtnl_lock();
5568
5569 if (cfg80211_regdomain && start == 0) {
5570 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5571 NLM_F_MULTI, NULL,
5572 rtnl_dereference(cfg80211_regdomain));
5573 if (err < 0)
5574 goto out_err;
5575 }
5576
5577 /* the global regdom is idx 0 */
5578 reg_idx = 1;
5579 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5580 regdom = get_wiphy_regdom(&rdev->wiphy);
5581 if (!regdom)
5582 continue;
5583
5584 if (++reg_idx <= start)
5585 continue;
5586
5587 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5588 NLM_F_MULTI, &rdev->wiphy, regdom);
5589 if (err < 0) {
5590 reg_idx--;
5591 break;
5592 }
5593 }
5594
5595 cb->args[2] = reg_idx;
5596 err = skb->len;
5597 out_err:
5598 rtnl_unlock();
5599 return err;
5600 }
5601
5602 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
5603 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
5604 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
5605 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
5606 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
5607 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
5608 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
5609 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
5610 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
5611 };
5612
5613 static int parse_reg_rule(struct nlattr *tb[],
5614 struct ieee80211_reg_rule *reg_rule)
5615 {
5616 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
5617 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
5618
5619 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
5620 return -EINVAL;
5621 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
5622 return -EINVAL;
5623 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
5624 return -EINVAL;
5625 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
5626 return -EINVAL;
5627 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
5628 return -EINVAL;
5629
5630 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
5631
5632 freq_range->start_freq_khz =
5633 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
5634 freq_range->end_freq_khz =
5635 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
5636 freq_range->max_bandwidth_khz =
5637 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
5638
5639 power_rule->max_eirp =
5640 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
5641
5642 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
5643 power_rule->max_antenna_gain =
5644 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
5645
5646 if (tb[NL80211_ATTR_DFS_CAC_TIME])
5647 reg_rule->dfs_cac_ms =
5648 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
5649
5650 return 0;
5651 }
5652
5653 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5654 {
5655 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5656 struct nlattr *nl_reg_rule;
5657 char *alpha2;
5658 int rem_reg_rules, r;
5659 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5660 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5661 struct ieee80211_regdomain *rd;
5662
5663 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5664 return -EINVAL;
5665
5666 if (!info->attrs[NL80211_ATTR_REG_RULES])
5667 return -EINVAL;
5668
5669 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5670
5671 if (info->attrs[NL80211_ATTR_DFS_REGION])
5672 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5673
5674 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5675 rem_reg_rules) {
5676 num_rules++;
5677 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5678 return -EINVAL;
5679 }
5680
5681 if (!reg_is_valid_request(alpha2))
5682 return -EINVAL;
5683
5684 size_of_regd = sizeof(struct ieee80211_regdomain) +
5685 num_rules * sizeof(struct ieee80211_reg_rule);
5686
5687 rd = kzalloc(size_of_regd, GFP_KERNEL);
5688 if (!rd)
5689 return -ENOMEM;
5690
5691 rd->n_reg_rules = num_rules;
5692 rd->alpha2[0] = alpha2[0];
5693 rd->alpha2[1] = alpha2[1];
5694
5695 /*
5696 * Disable DFS master mode if the DFS region was
5697 * not supported or known on this kernel.
5698 */
5699 if (reg_supported_dfs_region(dfs_region))
5700 rd->dfs_region = dfs_region;
5701
5702 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5703 rem_reg_rules) {
5704 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5705 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5706 reg_rule_policy);
5707 if (r)
5708 goto bad_reg;
5709 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5710 if (r)
5711 goto bad_reg;
5712
5713 rule_idx++;
5714
5715 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5716 r = -EINVAL;
5717 goto bad_reg;
5718 }
5719 }
5720
5721 r = set_regdom(rd, REGD_SOURCE_CRDA);
5722 /* set_regdom took ownership */
5723 rd = NULL;
5724
5725 bad_reg:
5726 kfree(rd);
5727 return r;
5728 }
5729 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
5730
5731 static int validate_scan_freqs(struct nlattr *freqs)
5732 {
5733 struct nlattr *attr1, *attr2;
5734 int n_channels = 0, tmp1, tmp2;
5735
5736 nla_for_each_nested(attr1, freqs, tmp1) {
5737 n_channels++;
5738 /*
5739 * Some hardware has a limited channel list for
5740 * scanning, and it is pretty much nonsensical
5741 * to scan for a channel twice, so disallow that
5742 * and don't require drivers to check that the
5743 * channel list they get isn't longer than what
5744 * they can scan, as long as they can scan all
5745 * the channels they registered at once.
5746 */
5747 nla_for_each_nested(attr2, freqs, tmp2)
5748 if (attr1 != attr2 &&
5749 nla_get_u32(attr1) == nla_get_u32(attr2))
5750 return 0;
5751 }
5752
5753 return n_channels;
5754 }
5755
5756 static int nl80211_parse_random_mac(struct nlattr **attrs,
5757 u8 *mac_addr, u8 *mac_addr_mask)
5758 {
5759 int i;
5760
5761 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5762 eth_zero_addr(mac_addr);
5763 eth_zero_addr(mac_addr_mask);
5764 mac_addr[0] = 0x2;
5765 mac_addr_mask[0] = 0x3;
5766
5767 return 0;
5768 }
5769
5770 /* need both or none */
5771 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5772 return -EINVAL;
5773
5774 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5775 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5776
5777 /* don't allow or configure an mcast address */
5778 if (!is_multicast_ether_addr(mac_addr_mask) ||
5779 is_multicast_ether_addr(mac_addr))
5780 return -EINVAL;
5781
5782 /*
5783 * allow users to pass a MAC address that has bits set outside
5784 * of the mask, but don't bother drivers with having to deal
5785 * with such bits
5786 */
5787 for (i = 0; i < ETH_ALEN; i++)
5788 mac_addr[i] &= mac_addr_mask[i];
5789
5790 return 0;
5791 }
5792
5793 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5794 {
5795 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5796 struct wireless_dev *wdev = info->user_ptr[1];
5797 struct cfg80211_scan_request *request;
5798 struct nlattr *attr;
5799 struct wiphy *wiphy;
5800 int err, tmp, n_ssids = 0, n_channels, i;
5801 size_t ie_len;
5802
5803 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5804 return -EINVAL;
5805
5806 wiphy = &rdev->wiphy;
5807
5808 if (!rdev->ops->scan)
5809 return -EOPNOTSUPP;
5810
5811 if (rdev->scan_req || rdev->scan_msg) {
5812 err = -EBUSY;
5813 goto unlock;
5814 }
5815
5816 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5817 n_channels = validate_scan_freqs(
5818 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5819 if (!n_channels) {
5820 err = -EINVAL;
5821 goto unlock;
5822 }
5823 } else {
5824 n_channels = ieee80211_get_num_supported_channels(wiphy);
5825 }
5826
5827 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5828 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5829 n_ssids++;
5830
5831 if (n_ssids > wiphy->max_scan_ssids) {
5832 err = -EINVAL;
5833 goto unlock;
5834 }
5835
5836 if (info->attrs[NL80211_ATTR_IE])
5837 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5838 else
5839 ie_len = 0;
5840
5841 if (ie_len > wiphy->max_scan_ie_len) {
5842 err = -EINVAL;
5843 goto unlock;
5844 }
5845
5846 request = kzalloc(sizeof(*request)
5847 + sizeof(*request->ssids) * n_ssids
5848 + sizeof(*request->channels) * n_channels
5849 + ie_len, GFP_KERNEL);
5850 if (!request) {
5851 err = -ENOMEM;
5852 goto unlock;
5853 }
5854
5855 if (n_ssids)
5856 request->ssids = (void *)&request->channels[n_channels];
5857 request->n_ssids = n_ssids;
5858 if (ie_len) {
5859 if (n_ssids)
5860 request->ie = (void *)(request->ssids + n_ssids);
5861 else
5862 request->ie = (void *)(request->channels + n_channels);
5863 }
5864
5865 i = 0;
5866 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5867 /* user specified, bail out if channel not found */
5868 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5869 struct ieee80211_channel *chan;
5870
5871 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5872
5873 if (!chan) {
5874 err = -EINVAL;
5875 goto out_free;
5876 }
5877
5878 /* ignore disabled channels */
5879 if (chan->flags & IEEE80211_CHAN_DISABLED)
5880 continue;
5881
5882 request->channels[i] = chan;
5883 i++;
5884 }
5885 } else {
5886 enum ieee80211_band band;
5887
5888 /* all channels */
5889 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5890 int j;
5891 if (!wiphy->bands[band])
5892 continue;
5893 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5894 struct ieee80211_channel *chan;
5895
5896 chan = &wiphy->bands[band]->channels[j];
5897
5898 if (chan->flags & IEEE80211_CHAN_DISABLED)
5899 continue;
5900
5901 request->channels[i] = chan;
5902 i++;
5903 }
5904 }
5905 }
5906
5907 if (!i) {
5908 err = -EINVAL;
5909 goto out_free;
5910 }
5911
5912 request->n_channels = i;
5913
5914 i = 0;
5915 if (n_ssids) {
5916 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5917 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5918 err = -EINVAL;
5919 goto out_free;
5920 }
5921 request->ssids[i].ssid_len = nla_len(attr);
5922 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5923 i++;
5924 }
5925 }
5926
5927 if (info->attrs[NL80211_ATTR_IE]) {
5928 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5929 memcpy((void *)request->ie,
5930 nla_data(info->attrs[NL80211_ATTR_IE]),
5931 request->ie_len);
5932 }
5933
5934 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5935 if (wiphy->bands[i])
5936 request->rates[i] =
5937 (1 << wiphy->bands[i]->n_bitrates) - 1;
5938
5939 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5940 nla_for_each_nested(attr,
5941 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5942 tmp) {
5943 enum ieee80211_band band = nla_type(attr);
5944
5945 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5946 err = -EINVAL;
5947 goto out_free;
5948 }
5949
5950 if (!wiphy->bands[band])
5951 continue;
5952
5953 err = ieee80211_get_ratemask(wiphy->bands[band],
5954 nla_data(attr),
5955 nla_len(attr),
5956 &request->rates[band]);
5957 if (err)
5958 goto out_free;
5959 }
5960 }
5961
5962 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5963 request->flags = nla_get_u32(
5964 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5965 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5966 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5967 err = -EOPNOTSUPP;
5968 goto out_free;
5969 }
5970
5971 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5972 if (!(wiphy->features &
5973 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5974 err = -EOPNOTSUPP;
5975 goto out_free;
5976 }
5977
5978 if (wdev->current_bss) {
5979 err = -EOPNOTSUPP;
5980 goto out_free;
5981 }
5982
5983 err = nl80211_parse_random_mac(info->attrs,
5984 request->mac_addr,
5985 request->mac_addr_mask);
5986 if (err)
5987 goto out_free;
5988 }
5989 }
5990
5991 request->no_cck =
5992 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5993
5994 request->wdev = wdev;
5995 request->wiphy = &rdev->wiphy;
5996 request->scan_start = jiffies;
5997
5998 rdev->scan_req = request;
5999 err = rdev_scan(rdev, request);
6000
6001 if (!err) {
6002 nl80211_send_scan_start(rdev, wdev);
6003 if (wdev->netdev)
6004 dev_hold(wdev->netdev);
6005 } else {
6006 out_free:
6007 rdev->scan_req = NULL;
6008 kfree(request);
6009 }
6010
6011 unlock:
6012 return err;
6013 }
6014
6015 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
6016 {
6017 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6018 struct wireless_dev *wdev = info->user_ptr[1];
6019
6020 if (!rdev->ops->abort_scan)
6021 return -EOPNOTSUPP;
6022
6023 if (rdev->scan_msg)
6024 return 0;
6025
6026 if (!rdev->scan_req)
6027 return -ENOENT;
6028
6029 rdev_abort_scan(rdev, wdev);
6030 return 0;
6031 }
6032
6033 static int
6034 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
6035 struct cfg80211_sched_scan_request *request,
6036 struct nlattr **attrs)
6037 {
6038 int tmp, err, i = 0;
6039 struct nlattr *attr;
6040
6041 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6042 u32 interval;
6043
6044 /*
6045 * If scan plans are not specified,
6046 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this
6047 * case one scan plan will be set with the specified scan
6048 * interval and infinite number of iterations.
6049 */
6050 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6051 return -EINVAL;
6052
6053 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
6054 if (!interval)
6055 return -EINVAL;
6056
6057 request->scan_plans[0].interval =
6058 DIV_ROUND_UP(interval, MSEC_PER_SEC);
6059 if (!request->scan_plans[0].interval)
6060 return -EINVAL;
6061
6062 if (request->scan_plans[0].interval >
6063 wiphy->max_sched_scan_plan_interval)
6064 request->scan_plans[0].interval =
6065 wiphy->max_sched_scan_plan_interval;
6066
6067 return 0;
6068 }
6069
6070 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
6071 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
6072
6073 if (WARN_ON(i >= n_plans))
6074 return -EINVAL;
6075
6076 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX,
6077 nla_data(attr), nla_len(attr),
6078 nl80211_plan_policy);
6079 if (err)
6080 return err;
6081
6082 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
6083 return -EINVAL;
6084
6085 request->scan_plans[i].interval =
6086 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
6087 if (!request->scan_plans[i].interval ||
6088 request->scan_plans[i].interval >
6089 wiphy->max_sched_scan_plan_interval)
6090 return -EINVAL;
6091
6092 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
6093 request->scan_plans[i].iterations =
6094 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
6095 if (!request->scan_plans[i].iterations ||
6096 (request->scan_plans[i].iterations >
6097 wiphy->max_sched_scan_plan_iterations))
6098 return -EINVAL;
6099 } else if (i < n_plans - 1) {
6100 /*
6101 * All scan plans but the last one must specify
6102 * a finite number of iterations
6103 */
6104 return -EINVAL;
6105 }
6106
6107 i++;
6108 }
6109
6110 /*
6111 * The last scan plan must not specify the number of
6112 * iterations, it is supposed to run infinitely
6113 */
6114 if (request->scan_plans[n_plans - 1].iterations)
6115 return -EINVAL;
6116
6117 return 0;
6118 }
6119
6120 static struct cfg80211_sched_scan_request *
6121 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
6122 struct nlattr **attrs)
6123 {
6124 struct cfg80211_sched_scan_request *request;
6125 struct nlattr *attr;
6126 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
6127 enum ieee80211_band band;
6128 size_t ie_len;
6129 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
6130 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
6131
6132 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
6133 return ERR_PTR(-EINVAL);
6134
6135 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6136 n_channels = validate_scan_freqs(
6137 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
6138 if (!n_channels)
6139 return ERR_PTR(-EINVAL);
6140 } else {
6141 n_channels = ieee80211_get_num_supported_channels(wiphy);
6142 }
6143
6144 if (attrs[NL80211_ATTR_SCAN_SSIDS])
6145 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6146 tmp)
6147 n_ssids++;
6148
6149 if (n_ssids > wiphy->max_sched_scan_ssids)
6150 return ERR_PTR(-EINVAL);
6151
6152 /*
6153 * First, count the number of 'real' matchsets. Due to an issue with
6154 * the old implementation, matchsets containing only the RSSI attribute
6155 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6156 * RSSI for all matchsets, rather than their own matchset for reporting
6157 * all APs with a strong RSSI. This is needed to be compatible with
6158 * older userspace that treated a matchset with only the RSSI as the
6159 * global RSSI for all other matchsets - if there are other matchsets.
6160 */
6161 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6162 nla_for_each_nested(attr,
6163 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6164 tmp) {
6165 struct nlattr *rssi;
6166
6167 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6168 nla_data(attr), nla_len(attr),
6169 nl80211_match_policy);
6170 if (err)
6171 return ERR_PTR(err);
6172 /* add other standalone attributes here */
6173 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6174 n_match_sets++;
6175 continue;
6176 }
6177 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6178 if (rssi)
6179 default_match_rssi = nla_get_s32(rssi);
6180 }
6181 }
6182
6183 /* However, if there's no other matchset, add the RSSI one */
6184 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6185 n_match_sets = 1;
6186
6187 if (n_match_sets > wiphy->max_match_sets)
6188 return ERR_PTR(-EINVAL);
6189
6190 if (attrs[NL80211_ATTR_IE])
6191 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6192 else
6193 ie_len = 0;
6194
6195 if (ie_len > wiphy->max_sched_scan_ie_len)
6196 return ERR_PTR(-EINVAL);
6197
6198 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
6199 /*
6200 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
6201 * each scan plan already specifies its own interval
6202 */
6203 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6204 return ERR_PTR(-EINVAL);
6205
6206 nla_for_each_nested(attr,
6207 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
6208 n_plans++;
6209 } else {
6210 /*
6211 * The scan interval attribute is kept for backward
6212 * compatibility. If no scan plans are specified and sched scan
6213 * interval is specified, one scan plan will be set with this
6214 * scan interval and infinite number of iterations.
6215 */
6216 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
6217 return ERR_PTR(-EINVAL);
6218
6219 n_plans = 1;
6220 }
6221
6222 if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
6223 return ERR_PTR(-EINVAL);
6224
6225 request = kzalloc(sizeof(*request)
6226 + sizeof(*request->ssids) * n_ssids
6227 + sizeof(*request->match_sets) * n_match_sets
6228 + sizeof(*request->scan_plans) * n_plans
6229 + sizeof(*request->channels) * n_channels
6230 + ie_len, GFP_KERNEL);
6231 if (!request)
6232 return ERR_PTR(-ENOMEM);
6233
6234 if (n_ssids)
6235 request->ssids = (void *)&request->channels[n_channels];
6236 request->n_ssids = n_ssids;
6237 if (ie_len) {
6238 if (n_ssids)
6239 request->ie = (void *)(request->ssids + n_ssids);
6240 else
6241 request->ie = (void *)(request->channels + n_channels);
6242 }
6243
6244 if (n_match_sets) {
6245 if (request->ie)
6246 request->match_sets = (void *)(request->ie + ie_len);
6247 else if (n_ssids)
6248 request->match_sets =
6249 (void *)(request->ssids + n_ssids);
6250 else
6251 request->match_sets =
6252 (void *)(request->channels + n_channels);
6253 }
6254 request->n_match_sets = n_match_sets;
6255
6256 if (n_match_sets)
6257 request->scan_plans = (void *)(request->match_sets +
6258 n_match_sets);
6259 else if (request->ie)
6260 request->scan_plans = (void *)(request->ie + ie_len);
6261 else if (n_ssids)
6262 request->scan_plans = (void *)(request->ssids + n_ssids);
6263 else
6264 request->scan_plans = (void *)(request->channels + n_channels);
6265
6266 request->n_scan_plans = n_plans;
6267
6268 i = 0;
6269 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6270 /* user specified, bail out if channel not found */
6271 nla_for_each_nested(attr,
6272 attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6273 tmp) {
6274 struct ieee80211_channel *chan;
6275
6276 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6277
6278 if (!chan) {
6279 err = -EINVAL;
6280 goto out_free;
6281 }
6282
6283 /* ignore disabled channels */
6284 if (chan->flags & IEEE80211_CHAN_DISABLED)
6285 continue;
6286
6287 request->channels[i] = chan;
6288 i++;
6289 }
6290 } else {
6291 /* all channels */
6292 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6293 int j;
6294 if (!wiphy->bands[band])
6295 continue;
6296 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6297 struct ieee80211_channel *chan;
6298
6299 chan = &wiphy->bands[band]->channels[j];
6300
6301 if (chan->flags & IEEE80211_CHAN_DISABLED)
6302 continue;
6303
6304 request->channels[i] = chan;
6305 i++;
6306 }
6307 }
6308 }
6309
6310 if (!i) {
6311 err = -EINVAL;
6312 goto out_free;
6313 }
6314
6315 request->n_channels = i;
6316
6317 i = 0;
6318 if (n_ssids) {
6319 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6320 tmp) {
6321 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6322 err = -EINVAL;
6323 goto out_free;
6324 }
6325 request->ssids[i].ssid_len = nla_len(attr);
6326 memcpy(request->ssids[i].ssid, nla_data(attr),
6327 nla_len(attr));
6328 i++;
6329 }
6330 }
6331
6332 i = 0;
6333 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6334 nla_for_each_nested(attr,
6335 attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6336 tmp) {
6337 struct nlattr *ssid, *rssi;
6338
6339 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6340 nla_data(attr), nla_len(attr),
6341 nl80211_match_policy);
6342 if (err)
6343 goto out_free;
6344 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6345 if (ssid) {
6346 if (WARN_ON(i >= n_match_sets)) {
6347 /* this indicates a programming error,
6348 * the loop above should have verified
6349 * things properly
6350 */
6351 err = -EINVAL;
6352 goto out_free;
6353 }
6354
6355 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6356 err = -EINVAL;
6357 goto out_free;
6358 }
6359 memcpy(request->match_sets[i].ssid.ssid,
6360 nla_data(ssid), nla_len(ssid));
6361 request->match_sets[i].ssid.ssid_len =
6362 nla_len(ssid);
6363 /* special attribute - old implemenation w/a */
6364 request->match_sets[i].rssi_thold =
6365 default_match_rssi;
6366 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6367 if (rssi)
6368 request->match_sets[i].rssi_thold =
6369 nla_get_s32(rssi);
6370 }
6371 i++;
6372 }
6373
6374 /* there was no other matchset, so the RSSI one is alone */
6375 if (i == 0 && n_match_sets)
6376 request->match_sets[0].rssi_thold = default_match_rssi;
6377
6378 request->min_rssi_thold = INT_MAX;
6379 for (i = 0; i < n_match_sets; i++)
6380 request->min_rssi_thold =
6381 min(request->match_sets[i].rssi_thold,
6382 request->min_rssi_thold);
6383 } else {
6384 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6385 }
6386
6387 if (ie_len) {
6388 request->ie_len = ie_len;
6389 memcpy((void *)request->ie,
6390 nla_data(attrs[NL80211_ATTR_IE]),
6391 request->ie_len);
6392 }
6393
6394 if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6395 request->flags = nla_get_u32(
6396 attrs[NL80211_ATTR_SCAN_FLAGS]);
6397 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6398 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6399 err = -EOPNOTSUPP;
6400 goto out_free;
6401 }
6402
6403 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6404 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6405
6406 if (!wdev) /* must be net-detect */
6407 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6408
6409 if (!(wiphy->features & flg)) {
6410 err = -EOPNOTSUPP;
6411 goto out_free;
6412 }
6413
6414 if (wdev && wdev->current_bss) {
6415 err = -EOPNOTSUPP;
6416 goto out_free;
6417 }
6418
6419 err = nl80211_parse_random_mac(attrs, request->mac_addr,
6420 request->mac_addr_mask);
6421 if (err)
6422 goto out_free;
6423 }
6424 }
6425
6426 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6427 request->delay =
6428 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6429
6430 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
6431 if (err)
6432 goto out_free;
6433
6434 request->scan_start = jiffies;
6435
6436 return request;
6437
6438 out_free:
6439 kfree(request);
6440 return ERR_PTR(err);
6441 }
6442
6443 static int nl80211_start_sched_scan(struct sk_buff *skb,
6444 struct genl_info *info)
6445 {
6446 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6447 struct net_device *dev = info->user_ptr[1];
6448 struct wireless_dev *wdev = dev->ieee80211_ptr;
6449 struct cfg80211_sched_scan_request *sched_scan_req;
6450 int err;
6451
6452 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6453 !rdev->ops->sched_scan_start)
6454 return -EOPNOTSUPP;
6455
6456 if (rdev->sched_scan_req)
6457 return -EINPROGRESS;
6458
6459 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6460 info->attrs);
6461
6462 err = PTR_ERR_OR_ZERO(sched_scan_req);
6463 if (err)
6464 goto out_err;
6465
6466 err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6467 if (err)
6468 goto out_free;
6469
6470 sched_scan_req->dev = dev;
6471 sched_scan_req->wiphy = &rdev->wiphy;
6472
6473 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6474 sched_scan_req->owner_nlportid = info->snd_portid;
6475
6476 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6477
6478 nl80211_send_sched_scan(rdev, dev,
6479 NL80211_CMD_START_SCHED_SCAN);
6480 return 0;
6481
6482 out_free:
6483 kfree(sched_scan_req);
6484 out_err:
6485 return err;
6486 }
6487
6488 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6489 struct genl_info *info)
6490 {
6491 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6492
6493 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6494 !rdev->ops->sched_scan_stop)
6495 return -EOPNOTSUPP;
6496
6497 return __cfg80211_stop_sched_scan(rdev, false);
6498 }
6499
6500 static int nl80211_start_radar_detection(struct sk_buff *skb,
6501 struct genl_info *info)
6502 {
6503 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6504 struct net_device *dev = info->user_ptr[1];
6505 struct wireless_dev *wdev = dev->ieee80211_ptr;
6506 struct cfg80211_chan_def chandef;
6507 enum nl80211_dfs_regions dfs_region;
6508 unsigned int cac_time_ms;
6509 int err;
6510
6511 dfs_region = reg_get_dfs_region(wdev->wiphy);
6512 if (dfs_region == NL80211_DFS_UNSET)
6513 return -EINVAL;
6514
6515 err = nl80211_parse_chandef(rdev, info, &chandef);
6516 if (err)
6517 return err;
6518
6519 if (netif_carrier_ok(dev))
6520 return -EBUSY;
6521
6522 if (wdev->cac_started)
6523 return -EBUSY;
6524
6525 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6526 wdev->iftype);
6527 if (err < 0)
6528 return err;
6529
6530 if (err == 0)
6531 return -EINVAL;
6532
6533 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6534 return -EINVAL;
6535
6536 if (!rdev->ops->start_radar_detection)
6537 return -EOPNOTSUPP;
6538
6539 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6540 if (WARN_ON(!cac_time_ms))
6541 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6542
6543 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
6544 if (!err) {
6545 wdev->chandef = chandef;
6546 wdev->cac_started = true;
6547 wdev->cac_start_time = jiffies;
6548 wdev->cac_time_ms = cac_time_ms;
6549 }
6550 return err;
6551 }
6552
6553 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6554 {
6555 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6556 struct net_device *dev = info->user_ptr[1];
6557 struct wireless_dev *wdev = dev->ieee80211_ptr;
6558 struct cfg80211_csa_settings params;
6559 /* csa_attrs is defined static to avoid waste of stack size - this
6560 * function is called under RTNL lock, so this should not be a problem.
6561 */
6562 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6563 int err;
6564 bool need_new_beacon = false;
6565 int len, i;
6566 u32 cs_count;
6567
6568 if (!rdev->ops->channel_switch ||
6569 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6570 return -EOPNOTSUPP;
6571
6572 switch (dev->ieee80211_ptr->iftype) {
6573 case NL80211_IFTYPE_AP:
6574 case NL80211_IFTYPE_P2P_GO:
6575 need_new_beacon = true;
6576
6577 /* useless if AP is not running */
6578 if (!wdev->beacon_interval)
6579 return -ENOTCONN;
6580 break;
6581 case NL80211_IFTYPE_ADHOC:
6582 if (!wdev->ssid_len)
6583 return -ENOTCONN;
6584 break;
6585 case NL80211_IFTYPE_MESH_POINT:
6586 if (!wdev->mesh_id_len)
6587 return -ENOTCONN;
6588 break;
6589 default:
6590 return -EOPNOTSUPP;
6591 }
6592
6593 memset(&params, 0, sizeof(params));
6594
6595 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6596 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6597 return -EINVAL;
6598
6599 /* only important for AP, IBSS and mesh create IEs internally */
6600 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6601 return -EINVAL;
6602
6603 /* Even though the attribute is u32, the specification says
6604 * u8, so let's make sure we don't overflow.
6605 */
6606 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6607 if (cs_count > 255)
6608 return -EINVAL;
6609
6610 params.count = cs_count;
6611
6612 if (!need_new_beacon)
6613 goto skip_beacons;
6614
6615 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6616 if (err)
6617 return err;
6618
6619 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6620 info->attrs[NL80211_ATTR_CSA_IES],
6621 nl80211_policy);
6622 if (err)
6623 return err;
6624
6625 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6626 if (err)
6627 return err;
6628
6629 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6630 return -EINVAL;
6631
6632 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6633 if (!len || (len % sizeof(u16)))
6634 return -EINVAL;
6635
6636 params.n_counter_offsets_beacon = len / sizeof(u16);
6637 if (rdev->wiphy.max_num_csa_counters &&
6638 (params.n_counter_offsets_beacon >
6639 rdev->wiphy.max_num_csa_counters))
6640 return -EINVAL;
6641
6642 params.counter_offsets_beacon =
6643 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6644
6645 /* sanity checks - counters should fit and be the same */
6646 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6647 u16 offset = params.counter_offsets_beacon[i];
6648
6649 if (offset >= params.beacon_csa.tail_len)
6650 return -EINVAL;
6651
6652 if (params.beacon_csa.tail[offset] != params.count)
6653 return -EINVAL;
6654 }
6655
6656 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6657 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6658 if (!len || (len % sizeof(u16)))
6659 return -EINVAL;
6660
6661 params.n_counter_offsets_presp = len / sizeof(u16);
6662 if (rdev->wiphy.max_num_csa_counters &&
6663 (params.n_counter_offsets_beacon >
6664 rdev->wiphy.max_num_csa_counters))
6665 return -EINVAL;
6666
6667 params.counter_offsets_presp =
6668 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6669
6670 /* sanity checks - counters should fit and be the same */
6671 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6672 u16 offset = params.counter_offsets_presp[i];
6673
6674 if (offset >= params.beacon_csa.probe_resp_len)
6675 return -EINVAL;
6676
6677 if (params.beacon_csa.probe_resp[offset] !=
6678 params.count)
6679 return -EINVAL;
6680 }
6681 }
6682
6683 skip_beacons:
6684 err = nl80211_parse_chandef(rdev, info, &params.chandef);
6685 if (err)
6686 return err;
6687
6688 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
6689 wdev->iftype))
6690 return -EINVAL;
6691
6692 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6693 &params.chandef,
6694 wdev->iftype);
6695 if (err < 0)
6696 return err;
6697
6698 if (err > 0)
6699 params.radar_required = true;
6700
6701 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6702 params.block_tx = true;
6703
6704 wdev_lock(wdev);
6705 err = rdev_channel_switch(rdev, dev, &params);
6706 wdev_unlock(wdev);
6707
6708 return err;
6709 }
6710
6711 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6712 u32 seq, int flags,
6713 struct cfg80211_registered_device *rdev,
6714 struct wireless_dev *wdev,
6715 struct cfg80211_internal_bss *intbss)
6716 {
6717 struct cfg80211_bss *res = &intbss->pub;
6718 const struct cfg80211_bss_ies *ies;
6719 void *hdr;
6720 struct nlattr *bss;
6721
6722 ASSERT_WDEV_LOCK(wdev);
6723
6724 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6725 NL80211_CMD_NEW_SCAN_RESULTS);
6726 if (!hdr)
6727 return -1;
6728
6729 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6730
6731 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6732 goto nla_put_failure;
6733 if (wdev->netdev &&
6734 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6735 goto nla_put_failure;
6736 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6737 goto nla_put_failure;
6738
6739 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6740 if (!bss)
6741 goto nla_put_failure;
6742 if ((!is_zero_ether_addr(res->bssid) &&
6743 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6744 goto nla_put_failure;
6745
6746 rcu_read_lock();
6747 /* indicate whether we have probe response data or not */
6748 if (rcu_access_pointer(res->proberesp_ies) &&
6749 nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6750 goto fail_unlock_rcu;
6751
6752 /* this pointer prefers to be pointed to probe response data
6753 * but is always valid
6754 */
6755 ies = rcu_dereference(res->ies);
6756 if (ies) {
6757 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6758 goto fail_unlock_rcu;
6759 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6760 ies->len, ies->data))
6761 goto fail_unlock_rcu;
6762 }
6763
6764 /* and this pointer is always (unless driver didn't know) beacon data */
6765 ies = rcu_dereference(res->beacon_ies);
6766 if (ies && ies->from_beacon) {
6767 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6768 goto fail_unlock_rcu;
6769 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6770 ies->len, ies->data))
6771 goto fail_unlock_rcu;
6772 }
6773 rcu_read_unlock();
6774
6775 if (res->beacon_interval &&
6776 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6777 goto nla_put_failure;
6778 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6779 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6780 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6781 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6782 jiffies_to_msecs(jiffies - intbss->ts)))
6783 goto nla_put_failure;
6784
6785 if (intbss->ts_boottime &&
6786 nla_put_u64(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
6787 intbss->ts_boottime))
6788 goto nla_put_failure;
6789
6790 switch (rdev->wiphy.signal_type) {
6791 case CFG80211_SIGNAL_TYPE_MBM:
6792 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6793 goto nla_put_failure;
6794 break;
6795 case CFG80211_SIGNAL_TYPE_UNSPEC:
6796 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6797 goto nla_put_failure;
6798 break;
6799 default:
6800 break;
6801 }
6802
6803 switch (wdev->iftype) {
6804 case NL80211_IFTYPE_P2P_CLIENT:
6805 case NL80211_IFTYPE_STATION:
6806 if (intbss == wdev->current_bss &&
6807 nla_put_u32(msg, NL80211_BSS_STATUS,
6808 NL80211_BSS_STATUS_ASSOCIATED))
6809 goto nla_put_failure;
6810 break;
6811 case NL80211_IFTYPE_ADHOC:
6812 if (intbss == wdev->current_bss &&
6813 nla_put_u32(msg, NL80211_BSS_STATUS,
6814 NL80211_BSS_STATUS_IBSS_JOINED))
6815 goto nla_put_failure;
6816 break;
6817 default:
6818 break;
6819 }
6820
6821 nla_nest_end(msg, bss);
6822
6823 genlmsg_end(msg, hdr);
6824 return 0;
6825
6826 fail_unlock_rcu:
6827 rcu_read_unlock();
6828 nla_put_failure:
6829 genlmsg_cancel(msg, hdr);
6830 return -EMSGSIZE;
6831 }
6832
6833 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6834 {
6835 struct cfg80211_registered_device *rdev;
6836 struct cfg80211_internal_bss *scan;
6837 struct wireless_dev *wdev;
6838 int start = cb->args[2], idx = 0;
6839 int err;
6840
6841 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6842 if (err)
6843 return err;
6844
6845 wdev_lock(wdev);
6846 spin_lock_bh(&rdev->bss_lock);
6847 cfg80211_bss_expire(rdev);
6848
6849 cb->seq = rdev->bss_generation;
6850
6851 list_for_each_entry(scan, &rdev->bss_list, list) {
6852 if (++idx <= start)
6853 continue;
6854 if (nl80211_send_bss(skb, cb,
6855 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6856 rdev, wdev, scan) < 0) {
6857 idx--;
6858 break;
6859 }
6860 }
6861
6862 spin_unlock_bh(&rdev->bss_lock);
6863 wdev_unlock(wdev);
6864
6865 cb->args[2] = idx;
6866 nl80211_finish_wdev_dump(rdev);
6867
6868 return skb->len;
6869 }
6870
6871 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6872 int flags, struct net_device *dev,
6873 bool allow_radio_stats,
6874 struct survey_info *survey)
6875 {
6876 void *hdr;
6877 struct nlattr *infoattr;
6878
6879 /* skip radio stats if userspace didn't request them */
6880 if (!survey->channel && !allow_radio_stats)
6881 return 0;
6882
6883 hdr = nl80211hdr_put(msg, portid, seq, flags,
6884 NL80211_CMD_NEW_SURVEY_RESULTS);
6885 if (!hdr)
6886 return -ENOMEM;
6887
6888 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6889 goto nla_put_failure;
6890
6891 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6892 if (!infoattr)
6893 goto nla_put_failure;
6894
6895 if (survey->channel &&
6896 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6897 survey->channel->center_freq))
6898 goto nla_put_failure;
6899
6900 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6901 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6902 goto nla_put_failure;
6903 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6904 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6905 goto nla_put_failure;
6906 if ((survey->filled & SURVEY_INFO_TIME) &&
6907 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6908 survey->time))
6909 goto nla_put_failure;
6910 if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6911 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6912 survey->time_busy))
6913 goto nla_put_failure;
6914 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6915 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6916 survey->time_ext_busy))
6917 goto nla_put_failure;
6918 if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6919 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6920 survey->time_rx))
6921 goto nla_put_failure;
6922 if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6923 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6924 survey->time_tx))
6925 goto nla_put_failure;
6926 if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6927 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6928 survey->time_scan))
6929 goto nla_put_failure;
6930
6931 nla_nest_end(msg, infoattr);
6932
6933 genlmsg_end(msg, hdr);
6934 return 0;
6935
6936 nla_put_failure:
6937 genlmsg_cancel(msg, hdr);
6938 return -EMSGSIZE;
6939 }
6940
6941 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6942 {
6943 struct survey_info survey;
6944 struct cfg80211_registered_device *rdev;
6945 struct wireless_dev *wdev;
6946 int survey_idx = cb->args[2];
6947 int res;
6948 bool radio_stats;
6949
6950 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6951 if (res)
6952 return res;
6953
6954 /* prepare_wdev_dump parsed the attributes */
6955 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6956
6957 if (!wdev->netdev) {
6958 res = -EINVAL;
6959 goto out_err;
6960 }
6961
6962 if (!rdev->ops->dump_survey) {
6963 res = -EOPNOTSUPP;
6964 goto out_err;
6965 }
6966
6967 while (1) {
6968 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6969 if (res == -ENOENT)
6970 break;
6971 if (res)
6972 goto out_err;
6973
6974 /* don't send disabled channels, but do send non-channel data */
6975 if (survey.channel &&
6976 survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6977 survey_idx++;
6978 continue;
6979 }
6980
6981 if (nl80211_send_survey(skb,
6982 NETLINK_CB(cb->skb).portid,
6983 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6984 wdev->netdev, radio_stats, &survey) < 0)
6985 goto out;
6986 survey_idx++;
6987 }
6988
6989 out:
6990 cb->args[2] = survey_idx;
6991 res = skb->len;
6992 out_err:
6993 nl80211_finish_wdev_dump(rdev);
6994 return res;
6995 }
6996
6997 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6998 {
6999 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
7000 NL80211_WPA_VERSION_2));
7001 }
7002
7003 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
7004 {
7005 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7006 struct net_device *dev = info->user_ptr[1];
7007 struct ieee80211_channel *chan;
7008 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
7009 int err, ssid_len, ie_len = 0, sae_data_len = 0;
7010 enum nl80211_auth_type auth_type;
7011 struct key_parse key;
7012 bool local_state_change;
7013
7014 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7015 return -EINVAL;
7016
7017 if (!info->attrs[NL80211_ATTR_MAC])
7018 return -EINVAL;
7019
7020 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
7021 return -EINVAL;
7022
7023 if (!info->attrs[NL80211_ATTR_SSID])
7024 return -EINVAL;
7025
7026 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7027 return -EINVAL;
7028
7029 err = nl80211_parse_key(info, &key);
7030 if (err)
7031 return err;
7032
7033 if (key.idx >= 0) {
7034 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
7035 return -EINVAL;
7036 if (!key.p.key || !key.p.key_len)
7037 return -EINVAL;
7038 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
7039 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
7040 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
7041 key.p.key_len != WLAN_KEY_LEN_WEP104))
7042 return -EINVAL;
7043 if (key.idx > 4)
7044 return -EINVAL;
7045 } else {
7046 key.p.key_len = 0;
7047 key.p.key = NULL;
7048 }
7049
7050 if (key.idx >= 0) {
7051 int i;
7052 bool ok = false;
7053 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
7054 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
7055 ok = true;
7056 break;
7057 }
7058 }
7059 if (!ok)
7060 return -EINVAL;
7061 }
7062
7063 if (!rdev->ops->auth)
7064 return -EOPNOTSUPP;
7065
7066 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7067 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7068 return -EOPNOTSUPP;
7069
7070 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7071 chan = nl80211_get_valid_chan(&rdev->wiphy,
7072 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7073 if (!chan)
7074 return -EINVAL;
7075
7076 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7077 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7078
7079 if (info->attrs[NL80211_ATTR_IE]) {
7080 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7081 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7082 }
7083
7084 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7085 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
7086 return -EINVAL;
7087
7088 if (auth_type == NL80211_AUTHTYPE_SAE &&
7089 !info->attrs[NL80211_ATTR_SAE_DATA])
7090 return -EINVAL;
7091
7092 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
7093 if (auth_type != NL80211_AUTHTYPE_SAE)
7094 return -EINVAL;
7095 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
7096 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
7097 /* need to include at least Auth Transaction and Status Code */
7098 if (sae_data_len < 4)
7099 return -EINVAL;
7100 }
7101
7102 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7103
7104 /*
7105 * Since we no longer track auth state, ignore
7106 * requests to only change local state.
7107 */
7108 if (local_state_change)
7109 return 0;
7110
7111 wdev_lock(dev->ieee80211_ptr);
7112 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
7113 ssid, ssid_len, ie, ie_len,
7114 key.p.key, key.p.key_len, key.idx,
7115 sae_data, sae_data_len);
7116 wdev_unlock(dev->ieee80211_ptr);
7117 return err;
7118 }
7119
7120 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
7121 struct genl_info *info,
7122 struct cfg80211_crypto_settings *settings,
7123 int cipher_limit)
7124 {
7125 memset(settings, 0, sizeof(*settings));
7126
7127 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
7128
7129 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
7130 u16 proto;
7131 proto = nla_get_u16(
7132 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
7133 settings->control_port_ethertype = cpu_to_be16(proto);
7134 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
7135 proto != ETH_P_PAE)
7136 return -EINVAL;
7137 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
7138 settings->control_port_no_encrypt = true;
7139 } else
7140 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
7141
7142 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
7143 void *data;
7144 int len, i;
7145
7146 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7147 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
7148 settings->n_ciphers_pairwise = len / sizeof(u32);
7149
7150 if (len % sizeof(u32))
7151 return -EINVAL;
7152
7153 if (settings->n_ciphers_pairwise > cipher_limit)
7154 return -EINVAL;
7155
7156 memcpy(settings->ciphers_pairwise, data, len);
7157
7158 for (i = 0; i < settings->n_ciphers_pairwise; i++)
7159 if (!cfg80211_supported_cipher_suite(
7160 &rdev->wiphy,
7161 settings->ciphers_pairwise[i]))
7162 return -EINVAL;
7163 }
7164
7165 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
7166 settings->cipher_group =
7167 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
7168 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
7169 settings->cipher_group))
7170 return -EINVAL;
7171 }
7172
7173 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
7174 settings->wpa_versions =
7175 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
7176 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
7177 return -EINVAL;
7178 }
7179
7180 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
7181 void *data;
7182 int len;
7183
7184 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
7185 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
7186 settings->n_akm_suites = len / sizeof(u32);
7187
7188 if (len % sizeof(u32))
7189 return -EINVAL;
7190
7191 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
7192 return -EINVAL;
7193
7194 memcpy(settings->akm_suites, data, len);
7195 }
7196
7197 return 0;
7198 }
7199
7200 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7201 {
7202 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7203 struct net_device *dev = info->user_ptr[1];
7204 struct ieee80211_channel *chan;
7205 struct cfg80211_assoc_request req = {};
7206 const u8 *bssid, *ssid;
7207 int err, ssid_len = 0;
7208
7209 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7210 return -EINVAL;
7211
7212 if (!info->attrs[NL80211_ATTR_MAC] ||
7213 !info->attrs[NL80211_ATTR_SSID] ||
7214 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7215 return -EINVAL;
7216
7217 if (!rdev->ops->assoc)
7218 return -EOPNOTSUPP;
7219
7220 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7221 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7222 return -EOPNOTSUPP;
7223
7224 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7225
7226 chan = nl80211_get_valid_chan(&rdev->wiphy,
7227 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7228 if (!chan)
7229 return -EINVAL;
7230
7231 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7232 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7233
7234 if (info->attrs[NL80211_ATTR_IE]) {
7235 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7236 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7237 }
7238
7239 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7240 enum nl80211_mfp mfp =
7241 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7242 if (mfp == NL80211_MFP_REQUIRED)
7243 req.use_mfp = true;
7244 else if (mfp != NL80211_MFP_NO)
7245 return -EINVAL;
7246 }
7247
7248 if (info->attrs[NL80211_ATTR_PREV_BSSID])
7249 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7250
7251 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7252 req.flags |= ASSOC_REQ_DISABLE_HT;
7253
7254 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7255 memcpy(&req.ht_capa_mask,
7256 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7257 sizeof(req.ht_capa_mask));
7258
7259 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7260 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7261 return -EINVAL;
7262 memcpy(&req.ht_capa,
7263 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7264 sizeof(req.ht_capa));
7265 }
7266
7267 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7268 req.flags |= ASSOC_REQ_DISABLE_VHT;
7269
7270 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7271 memcpy(&req.vht_capa_mask,
7272 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7273 sizeof(req.vht_capa_mask));
7274
7275 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7276 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7277 return -EINVAL;
7278 memcpy(&req.vht_capa,
7279 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7280 sizeof(req.vht_capa));
7281 }
7282
7283 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7284 if (!(rdev->wiphy.features &
7285 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7286 !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7287 return -EINVAL;
7288 req.flags |= ASSOC_REQ_USE_RRM;
7289 }
7290
7291 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7292 if (!err) {
7293 wdev_lock(dev->ieee80211_ptr);
7294 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7295 ssid, ssid_len, &req);
7296 wdev_unlock(dev->ieee80211_ptr);
7297 }
7298
7299 return err;
7300 }
7301
7302 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7303 {
7304 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7305 struct net_device *dev = info->user_ptr[1];
7306 const u8 *ie = NULL, *bssid;
7307 int ie_len = 0, err;
7308 u16 reason_code;
7309 bool local_state_change;
7310
7311 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7312 return -EINVAL;
7313
7314 if (!info->attrs[NL80211_ATTR_MAC])
7315 return -EINVAL;
7316
7317 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7318 return -EINVAL;
7319
7320 if (!rdev->ops->deauth)
7321 return -EOPNOTSUPP;
7322
7323 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7324 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7325 return -EOPNOTSUPP;
7326
7327 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7328
7329 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7330 if (reason_code == 0) {
7331 /* Reason Code 0 is reserved */
7332 return -EINVAL;
7333 }
7334
7335 if (info->attrs[NL80211_ATTR_IE]) {
7336 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7337 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7338 }
7339
7340 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7341
7342 wdev_lock(dev->ieee80211_ptr);
7343 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7344 local_state_change);
7345 wdev_unlock(dev->ieee80211_ptr);
7346 return err;
7347 }
7348
7349 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7350 {
7351 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7352 struct net_device *dev = info->user_ptr[1];
7353 const u8 *ie = NULL, *bssid;
7354 int ie_len = 0, err;
7355 u16 reason_code;
7356 bool local_state_change;
7357
7358 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7359 return -EINVAL;
7360
7361 if (!info->attrs[NL80211_ATTR_MAC])
7362 return -EINVAL;
7363
7364 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7365 return -EINVAL;
7366
7367 if (!rdev->ops->disassoc)
7368 return -EOPNOTSUPP;
7369
7370 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7371 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7372 return -EOPNOTSUPP;
7373
7374 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7375
7376 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7377 if (reason_code == 0) {
7378 /* Reason Code 0 is reserved */
7379 return -EINVAL;
7380 }
7381
7382 if (info->attrs[NL80211_ATTR_IE]) {
7383 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7384 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7385 }
7386
7387 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7388
7389 wdev_lock(dev->ieee80211_ptr);
7390 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7391 local_state_change);
7392 wdev_unlock(dev->ieee80211_ptr);
7393 return err;
7394 }
7395
7396 static bool
7397 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7398 int mcast_rate[IEEE80211_NUM_BANDS],
7399 int rateval)
7400 {
7401 struct wiphy *wiphy = &rdev->wiphy;
7402 bool found = false;
7403 int band, i;
7404
7405 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7406 struct ieee80211_supported_band *sband;
7407
7408 sband = wiphy->bands[band];
7409 if (!sband)
7410 continue;
7411
7412 for (i = 0; i < sband->n_bitrates; i++) {
7413 if (sband->bitrates[i].bitrate == rateval) {
7414 mcast_rate[band] = i + 1;
7415 found = true;
7416 break;
7417 }
7418 }
7419 }
7420
7421 return found;
7422 }
7423
7424 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7425 {
7426 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7427 struct net_device *dev = info->user_ptr[1];
7428 struct cfg80211_ibss_params ibss;
7429 struct wiphy *wiphy;
7430 struct cfg80211_cached_keys *connkeys = NULL;
7431 int err;
7432
7433 memset(&ibss, 0, sizeof(ibss));
7434
7435 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7436 return -EINVAL;
7437
7438 if (!info->attrs[NL80211_ATTR_SSID] ||
7439 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7440 return -EINVAL;
7441
7442 ibss.beacon_interval = 100;
7443
7444 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7445 ibss.beacon_interval =
7446 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7447 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7448 return -EINVAL;
7449 }
7450
7451 if (!rdev->ops->join_ibss)
7452 return -EOPNOTSUPP;
7453
7454 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7455 return -EOPNOTSUPP;
7456
7457 wiphy = &rdev->wiphy;
7458
7459 if (info->attrs[NL80211_ATTR_MAC]) {
7460 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7461
7462 if (!is_valid_ether_addr(ibss.bssid))
7463 return -EINVAL;
7464 }
7465 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7466 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7467
7468 if (info->attrs[NL80211_ATTR_IE]) {
7469 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7470 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7471 }
7472
7473 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7474 if (err)
7475 return err;
7476
7477 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7478 NL80211_IFTYPE_ADHOC))
7479 return -EINVAL;
7480
7481 switch (ibss.chandef.width) {
7482 case NL80211_CHAN_WIDTH_5:
7483 case NL80211_CHAN_WIDTH_10:
7484 case NL80211_CHAN_WIDTH_20_NOHT:
7485 break;
7486 case NL80211_CHAN_WIDTH_20:
7487 case NL80211_CHAN_WIDTH_40:
7488 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7489 return -EINVAL;
7490 break;
7491 case NL80211_CHAN_WIDTH_80:
7492 case NL80211_CHAN_WIDTH_80P80:
7493 case NL80211_CHAN_WIDTH_160:
7494 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7495 return -EINVAL;
7496 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7497 NL80211_EXT_FEATURE_VHT_IBSS))
7498 return -EINVAL;
7499 break;
7500 default:
7501 return -EINVAL;
7502 }
7503
7504 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7505 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7506
7507 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7508 u8 *rates =
7509 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7510 int n_rates =
7511 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7512 struct ieee80211_supported_band *sband =
7513 wiphy->bands[ibss.chandef.chan->band];
7514
7515 err = ieee80211_get_ratemask(sband, rates, n_rates,
7516 &ibss.basic_rates);
7517 if (err)
7518 return err;
7519 }
7520
7521 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7522 memcpy(&ibss.ht_capa_mask,
7523 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7524 sizeof(ibss.ht_capa_mask));
7525
7526 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7527 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7528 return -EINVAL;
7529 memcpy(&ibss.ht_capa,
7530 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7531 sizeof(ibss.ht_capa));
7532 }
7533
7534 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7535 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7536 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7537 return -EINVAL;
7538
7539 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7540 bool no_ht = false;
7541
7542 connkeys = nl80211_parse_connkeys(rdev,
7543 info->attrs[NL80211_ATTR_KEYS],
7544 &no_ht);
7545 if (IS_ERR(connkeys))
7546 return PTR_ERR(connkeys);
7547
7548 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7549 no_ht) {
7550 kzfree(connkeys);
7551 return -EINVAL;
7552 }
7553 }
7554
7555 ibss.control_port =
7556 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7557
7558 ibss.userspace_handles_dfs =
7559 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7560
7561 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7562 if (err)
7563 kzfree(connkeys);
7564 return err;
7565 }
7566
7567 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7568 {
7569 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7570 struct net_device *dev = info->user_ptr[1];
7571
7572 if (!rdev->ops->leave_ibss)
7573 return -EOPNOTSUPP;
7574
7575 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7576 return -EOPNOTSUPP;
7577
7578 return cfg80211_leave_ibss(rdev, dev, false);
7579 }
7580
7581 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7582 {
7583 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7584 struct net_device *dev = info->user_ptr[1];
7585 int mcast_rate[IEEE80211_NUM_BANDS];
7586 u32 nla_rate;
7587 int err;
7588
7589 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7590 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
7591 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
7592 return -EOPNOTSUPP;
7593
7594 if (!rdev->ops->set_mcast_rate)
7595 return -EOPNOTSUPP;
7596
7597 memset(mcast_rate, 0, sizeof(mcast_rate));
7598
7599 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7600 return -EINVAL;
7601
7602 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7603 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7604 return -EINVAL;
7605
7606 err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
7607
7608 return err;
7609 }
7610
7611 static struct sk_buff *
7612 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7613 struct wireless_dev *wdev, int approxlen,
7614 u32 portid, u32 seq, enum nl80211_commands cmd,
7615 enum nl80211_attrs attr,
7616 const struct nl80211_vendor_cmd_info *info,
7617 gfp_t gfp)
7618 {
7619 struct sk_buff *skb;
7620 void *hdr;
7621 struct nlattr *data;
7622
7623 skb = nlmsg_new(approxlen + 100, gfp);
7624 if (!skb)
7625 return NULL;
7626
7627 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7628 if (!hdr) {
7629 kfree_skb(skb);
7630 return NULL;
7631 }
7632
7633 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7634 goto nla_put_failure;
7635
7636 if (info) {
7637 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7638 info->vendor_id))
7639 goto nla_put_failure;
7640 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7641 info->subcmd))
7642 goto nla_put_failure;
7643 }
7644
7645 if (wdev) {
7646 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7647 wdev_id(wdev)))
7648 goto nla_put_failure;
7649 if (wdev->netdev &&
7650 nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7651 wdev->netdev->ifindex))
7652 goto nla_put_failure;
7653 }
7654
7655 data = nla_nest_start(skb, attr);
7656
7657 ((void **)skb->cb)[0] = rdev;
7658 ((void **)skb->cb)[1] = hdr;
7659 ((void **)skb->cb)[2] = data;
7660
7661 return skb;
7662
7663 nla_put_failure:
7664 kfree_skb(skb);
7665 return NULL;
7666 }
7667
7668 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7669 struct wireless_dev *wdev,
7670 enum nl80211_commands cmd,
7671 enum nl80211_attrs attr,
7672 int vendor_event_idx,
7673 int approxlen, gfp_t gfp)
7674 {
7675 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7676 const struct nl80211_vendor_cmd_info *info;
7677
7678 switch (cmd) {
7679 case NL80211_CMD_TESTMODE:
7680 if (WARN_ON(vendor_event_idx != -1))
7681 return NULL;
7682 info = NULL;
7683 break;
7684 case NL80211_CMD_VENDOR:
7685 if (WARN_ON(vendor_event_idx < 0 ||
7686 vendor_event_idx >= wiphy->n_vendor_events))
7687 return NULL;
7688 info = &wiphy->vendor_events[vendor_event_idx];
7689 break;
7690 default:
7691 WARN_ON(1);
7692 return NULL;
7693 }
7694
7695 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7696 cmd, attr, info, gfp);
7697 }
7698 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7699
7700 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7701 {
7702 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7703 void *hdr = ((void **)skb->cb)[1];
7704 struct nlattr *data = ((void **)skb->cb)[2];
7705 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7706
7707 /* clear CB data for netlink core to own from now on */
7708 memset(skb->cb, 0, sizeof(skb->cb));
7709
7710 nla_nest_end(skb, data);
7711 genlmsg_end(skb, hdr);
7712
7713 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7714 mcgrp = NL80211_MCGRP_VENDOR;
7715
7716 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7717 mcgrp, gfp);
7718 }
7719 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7720
7721 #ifdef CONFIG_NL80211_TESTMODE
7722 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7723 {
7724 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7725 struct wireless_dev *wdev =
7726 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7727 int err;
7728
7729 if (!rdev->ops->testmode_cmd)
7730 return -EOPNOTSUPP;
7731
7732 if (IS_ERR(wdev)) {
7733 err = PTR_ERR(wdev);
7734 if (err != -EINVAL)
7735 return err;
7736 wdev = NULL;
7737 } else if (wdev->wiphy != &rdev->wiphy) {
7738 return -EINVAL;
7739 }
7740
7741 if (!info->attrs[NL80211_ATTR_TESTDATA])
7742 return -EINVAL;
7743
7744 rdev->cur_cmd_info = info;
7745 err = rdev_testmode_cmd(rdev, wdev,
7746 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7747 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7748 rdev->cur_cmd_info = NULL;
7749
7750 return err;
7751 }
7752
7753 static int nl80211_testmode_dump(struct sk_buff *skb,
7754 struct netlink_callback *cb)
7755 {
7756 struct cfg80211_registered_device *rdev;
7757 int err;
7758 long phy_idx;
7759 void *data = NULL;
7760 int data_len = 0;
7761
7762 rtnl_lock();
7763
7764 if (cb->args[0]) {
7765 /*
7766 * 0 is a valid index, but not valid for args[0],
7767 * so we need to offset by 1.
7768 */
7769 phy_idx = cb->args[0] - 1;
7770 } else {
7771 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7772 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7773 nl80211_policy);
7774 if (err)
7775 goto out_err;
7776
7777 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7778 nl80211_fam.attrbuf);
7779 if (IS_ERR(rdev)) {
7780 err = PTR_ERR(rdev);
7781 goto out_err;
7782 }
7783 phy_idx = rdev->wiphy_idx;
7784 rdev = NULL;
7785
7786 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7787 cb->args[1] =
7788 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7789 }
7790
7791 if (cb->args[1]) {
7792 data = nla_data((void *)cb->args[1]);
7793 data_len = nla_len((void *)cb->args[1]);
7794 }
7795
7796 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7797 if (!rdev) {
7798 err = -ENOENT;
7799 goto out_err;
7800 }
7801
7802 if (!rdev->ops->testmode_dump) {
7803 err = -EOPNOTSUPP;
7804 goto out_err;
7805 }
7806
7807 while (1) {
7808 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7809 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7810 NL80211_CMD_TESTMODE);
7811 struct nlattr *tmdata;
7812
7813 if (!hdr)
7814 break;
7815
7816 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7817 genlmsg_cancel(skb, hdr);
7818 break;
7819 }
7820
7821 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7822 if (!tmdata) {
7823 genlmsg_cancel(skb, hdr);
7824 break;
7825 }
7826 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7827 nla_nest_end(skb, tmdata);
7828
7829 if (err == -ENOBUFS || err == -ENOENT) {
7830 genlmsg_cancel(skb, hdr);
7831 break;
7832 } else if (err) {
7833 genlmsg_cancel(skb, hdr);
7834 goto out_err;
7835 }
7836
7837 genlmsg_end(skb, hdr);
7838 }
7839
7840 err = skb->len;
7841 /* see above */
7842 cb->args[0] = phy_idx + 1;
7843 out_err:
7844 rtnl_unlock();
7845 return err;
7846 }
7847 #endif
7848
7849 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7850 {
7851 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7852 struct net_device *dev = info->user_ptr[1];
7853 struct cfg80211_connect_params connect;
7854 struct wiphy *wiphy;
7855 struct cfg80211_cached_keys *connkeys = NULL;
7856 int err;
7857
7858 memset(&connect, 0, sizeof(connect));
7859
7860 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7861 return -EINVAL;
7862
7863 if (!info->attrs[NL80211_ATTR_SSID] ||
7864 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7865 return -EINVAL;
7866
7867 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7868 connect.auth_type =
7869 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7870 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7871 NL80211_CMD_CONNECT))
7872 return -EINVAL;
7873 } else
7874 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7875
7876 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7877
7878 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7879 NL80211_MAX_NR_CIPHER_SUITES);
7880 if (err)
7881 return err;
7882
7883 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7884 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7885 return -EOPNOTSUPP;
7886
7887 wiphy = &rdev->wiphy;
7888
7889 connect.bg_scan_period = -1;
7890 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7891 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7892 connect.bg_scan_period =
7893 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7894 }
7895
7896 if (info->attrs[NL80211_ATTR_MAC])
7897 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7898 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7899 connect.bssid_hint =
7900 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7901 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7902 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7903
7904 if (info->attrs[NL80211_ATTR_IE]) {
7905 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7906 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7907 }
7908
7909 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7910 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7911 if (connect.mfp != NL80211_MFP_REQUIRED &&
7912 connect.mfp != NL80211_MFP_NO)
7913 return -EINVAL;
7914 } else {
7915 connect.mfp = NL80211_MFP_NO;
7916 }
7917
7918 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7919 connect.channel = nl80211_get_valid_chan(
7920 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7921 if (!connect.channel)
7922 return -EINVAL;
7923 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7924 connect.channel_hint = nl80211_get_valid_chan(
7925 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7926 if (!connect.channel_hint)
7927 return -EINVAL;
7928 }
7929
7930 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7931 connkeys = nl80211_parse_connkeys(rdev,
7932 info->attrs[NL80211_ATTR_KEYS], NULL);
7933 if (IS_ERR(connkeys))
7934 return PTR_ERR(connkeys);
7935 }
7936
7937 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7938 connect.flags |= ASSOC_REQ_DISABLE_HT;
7939
7940 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7941 memcpy(&connect.ht_capa_mask,
7942 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7943 sizeof(connect.ht_capa_mask));
7944
7945 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7946 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7947 kzfree(connkeys);
7948 return -EINVAL;
7949 }
7950 memcpy(&connect.ht_capa,
7951 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7952 sizeof(connect.ht_capa));
7953 }
7954
7955 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7956 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7957
7958 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7959 memcpy(&connect.vht_capa_mask,
7960 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7961 sizeof(connect.vht_capa_mask));
7962
7963 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7964 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7965 kzfree(connkeys);
7966 return -EINVAL;
7967 }
7968 memcpy(&connect.vht_capa,
7969 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7970 sizeof(connect.vht_capa));
7971 }
7972
7973 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7974 if (!(rdev->wiphy.features &
7975 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7976 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) {
7977 kzfree(connkeys);
7978 return -EINVAL;
7979 }
7980 connect.flags |= ASSOC_REQ_USE_RRM;
7981 }
7982
7983 wdev_lock(dev->ieee80211_ptr);
7984 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7985 wdev_unlock(dev->ieee80211_ptr);
7986 if (err)
7987 kzfree(connkeys);
7988 return err;
7989 }
7990
7991 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7992 {
7993 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7994 struct net_device *dev = info->user_ptr[1];
7995 u16 reason;
7996 int ret;
7997
7998 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7999 reason = WLAN_REASON_DEAUTH_LEAVING;
8000 else
8001 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
8002
8003 if (reason == 0)
8004 return -EINVAL;
8005
8006 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8007 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8008 return -EOPNOTSUPP;
8009
8010 wdev_lock(dev->ieee80211_ptr);
8011 ret = cfg80211_disconnect(rdev, dev, reason, true);
8012 wdev_unlock(dev->ieee80211_ptr);
8013 return ret;
8014 }
8015
8016 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
8017 {
8018 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8019 struct net *net;
8020 int err;
8021
8022 if (info->attrs[NL80211_ATTR_PID]) {
8023 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
8024
8025 net = get_net_ns_by_pid(pid);
8026 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
8027 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
8028
8029 net = get_net_ns_by_fd(fd);
8030 } else {
8031 return -EINVAL;
8032 }
8033
8034 if (IS_ERR(net))
8035 return PTR_ERR(net);
8036
8037 err = 0;
8038
8039 /* check if anything to do */
8040 if (!net_eq(wiphy_net(&rdev->wiphy), net))
8041 err = cfg80211_switch_netns(rdev, net);
8042
8043 put_net(net);
8044 return err;
8045 }
8046
8047 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
8048 {
8049 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8050 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
8051 struct cfg80211_pmksa *pmksa) = NULL;
8052 struct net_device *dev = info->user_ptr[1];
8053 struct cfg80211_pmksa pmksa;
8054
8055 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
8056
8057 if (!info->attrs[NL80211_ATTR_MAC])
8058 return -EINVAL;
8059
8060 if (!info->attrs[NL80211_ATTR_PMKID])
8061 return -EINVAL;
8062
8063 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
8064 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
8065
8066 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8067 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8068 return -EOPNOTSUPP;
8069
8070 switch (info->genlhdr->cmd) {
8071 case NL80211_CMD_SET_PMKSA:
8072 rdev_ops = rdev->ops->set_pmksa;
8073 break;
8074 case NL80211_CMD_DEL_PMKSA:
8075 rdev_ops = rdev->ops->del_pmksa;
8076 break;
8077 default:
8078 WARN_ON(1);
8079 break;
8080 }
8081
8082 if (!rdev_ops)
8083 return -EOPNOTSUPP;
8084
8085 return rdev_ops(&rdev->wiphy, dev, &pmksa);
8086 }
8087
8088 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
8089 {
8090 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8091 struct net_device *dev = info->user_ptr[1];
8092
8093 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
8094 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
8095 return -EOPNOTSUPP;
8096
8097 if (!rdev->ops->flush_pmksa)
8098 return -EOPNOTSUPP;
8099
8100 return rdev_flush_pmksa(rdev, dev);
8101 }
8102
8103 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
8104 {
8105 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8106 struct net_device *dev = info->user_ptr[1];
8107 u8 action_code, dialog_token;
8108 u32 peer_capability = 0;
8109 u16 status_code;
8110 u8 *peer;
8111 bool initiator;
8112
8113 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8114 !rdev->ops->tdls_mgmt)
8115 return -EOPNOTSUPP;
8116
8117 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
8118 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
8119 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
8120 !info->attrs[NL80211_ATTR_IE] ||
8121 !info->attrs[NL80211_ATTR_MAC])
8122 return -EINVAL;
8123
8124 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8125 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
8126 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
8127 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
8128 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
8129 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
8130 peer_capability =
8131 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
8132
8133 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
8134 dialog_token, status_code, peer_capability,
8135 initiator,
8136 nla_data(info->attrs[NL80211_ATTR_IE]),
8137 nla_len(info->attrs[NL80211_ATTR_IE]));
8138 }
8139
8140 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
8141 {
8142 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8143 struct net_device *dev = info->user_ptr[1];
8144 enum nl80211_tdls_operation operation;
8145 u8 *peer;
8146
8147 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
8148 !rdev->ops->tdls_oper)
8149 return -EOPNOTSUPP;
8150
8151 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
8152 !info->attrs[NL80211_ATTR_MAC])
8153 return -EINVAL;
8154
8155 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
8156 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
8157
8158 return rdev_tdls_oper(rdev, dev, peer, operation);
8159 }
8160
8161 static int nl80211_remain_on_channel(struct sk_buff *skb,
8162 struct genl_info *info)
8163 {
8164 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8165 struct wireless_dev *wdev = info->user_ptr[1];
8166 struct cfg80211_chan_def chandef;
8167 struct sk_buff *msg;
8168 void *hdr;
8169 u64 cookie;
8170 u32 duration;
8171 int err;
8172
8173 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8174 !info->attrs[NL80211_ATTR_DURATION])
8175 return -EINVAL;
8176
8177 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8178
8179 if (!rdev->ops->remain_on_channel ||
8180 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
8181 return -EOPNOTSUPP;
8182
8183 /*
8184 * We should be on that channel for at least a minimum amount of
8185 * time (10ms) but no longer than the driver supports.
8186 */
8187 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8188 duration > rdev->wiphy.max_remain_on_channel_duration)
8189 return -EINVAL;
8190
8191 err = nl80211_parse_chandef(rdev, info, &chandef);
8192 if (err)
8193 return err;
8194
8195 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8196 if (!msg)
8197 return -ENOMEM;
8198
8199 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8200 NL80211_CMD_REMAIN_ON_CHANNEL);
8201 if (!hdr) {
8202 err = -ENOBUFS;
8203 goto free_msg;
8204 }
8205
8206 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8207 duration, &cookie);
8208
8209 if (err)
8210 goto free_msg;
8211
8212 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8213 goto nla_put_failure;
8214
8215 genlmsg_end(msg, hdr);
8216
8217 return genlmsg_reply(msg, info);
8218
8219 nla_put_failure:
8220 err = -ENOBUFS;
8221 free_msg:
8222 nlmsg_free(msg);
8223 return err;
8224 }
8225
8226 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8227 struct genl_info *info)
8228 {
8229 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8230 struct wireless_dev *wdev = info->user_ptr[1];
8231 u64 cookie;
8232
8233 if (!info->attrs[NL80211_ATTR_COOKIE])
8234 return -EINVAL;
8235
8236 if (!rdev->ops->cancel_remain_on_channel)
8237 return -EOPNOTSUPP;
8238
8239 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8240
8241 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8242 }
8243
8244 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8245 u8 *rates, u8 rates_len)
8246 {
8247 u8 i;
8248 u32 mask = 0;
8249
8250 for (i = 0; i < rates_len; i++) {
8251 int rate = (rates[i] & 0x7f) * 5;
8252 int ridx;
8253 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8254 struct ieee80211_rate *srate =
8255 &sband->bitrates[ridx];
8256 if (rate == srate->bitrate) {
8257 mask |= 1 << ridx;
8258 break;
8259 }
8260 }
8261 if (ridx == sband->n_bitrates)
8262 return 0; /* rate not found */
8263 }
8264
8265 return mask;
8266 }
8267
8268 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8269 u8 *rates, u8 rates_len,
8270 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8271 {
8272 u8 i;
8273
8274 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8275
8276 for (i = 0; i < rates_len; i++) {
8277 int ridx, rbit;
8278
8279 ridx = rates[i] / 8;
8280 rbit = BIT(rates[i] % 8);
8281
8282 /* check validity */
8283 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8284 return false;
8285
8286 /* check availability */
8287 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8288 mcs[ridx] |= rbit;
8289 else
8290 return false;
8291 }
8292
8293 return true;
8294 }
8295
8296 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8297 {
8298 u16 mcs_mask = 0;
8299
8300 switch (vht_mcs_map) {
8301 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8302 break;
8303 case IEEE80211_VHT_MCS_SUPPORT_0_7:
8304 mcs_mask = 0x00FF;
8305 break;
8306 case IEEE80211_VHT_MCS_SUPPORT_0_8:
8307 mcs_mask = 0x01FF;
8308 break;
8309 case IEEE80211_VHT_MCS_SUPPORT_0_9:
8310 mcs_mask = 0x03FF;
8311 break;
8312 default:
8313 break;
8314 }
8315
8316 return mcs_mask;
8317 }
8318
8319 static void vht_build_mcs_mask(u16 vht_mcs_map,
8320 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8321 {
8322 u8 nss;
8323
8324 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8325 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8326 vht_mcs_map >>= 2;
8327 }
8328 }
8329
8330 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8331 struct nl80211_txrate_vht *txrate,
8332 u16 mcs[NL80211_VHT_NSS_MAX])
8333 {
8334 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8335 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8336 u8 i;
8337
8338 if (!sband->vht_cap.vht_supported)
8339 return false;
8340
8341 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8342
8343 /* Build vht_mcs_mask from VHT capabilities */
8344 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8345
8346 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8347 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8348 mcs[i] = txrate->mcs[i];
8349 else
8350 return false;
8351 }
8352
8353 return true;
8354 }
8355
8356 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8357 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8358 .len = NL80211_MAX_SUPP_RATES },
8359 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8360 .len = NL80211_MAX_SUPP_HT_RATES },
8361 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8362 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8363 };
8364
8365 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8366 struct genl_info *info)
8367 {
8368 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8369 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8370 struct cfg80211_bitrate_mask mask;
8371 int rem, i;
8372 struct net_device *dev = info->user_ptr[1];
8373 struct nlattr *tx_rates;
8374 struct ieee80211_supported_band *sband;
8375 u16 vht_tx_mcs_map;
8376
8377 if (!rdev->ops->set_bitrate_mask)
8378 return -EOPNOTSUPP;
8379
8380 memset(&mask, 0, sizeof(mask));
8381 /* Default to all rates enabled */
8382 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8383 sband = rdev->wiphy.bands[i];
8384
8385 if (!sband)
8386 continue;
8387
8388 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8389 memcpy(mask.control[i].ht_mcs,
8390 sband->ht_cap.mcs.rx_mask,
8391 sizeof(mask.control[i].ht_mcs));
8392
8393 if (!sband->vht_cap.vht_supported)
8394 continue;
8395
8396 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8397 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8398 }
8399
8400 /* if no rates are given set it back to the defaults */
8401 if (!info->attrs[NL80211_ATTR_TX_RATES])
8402 goto out;
8403
8404 /*
8405 * The nested attribute uses enum nl80211_band as the index. This maps
8406 * directly to the enum ieee80211_band values used in cfg80211.
8407 */
8408 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8409 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8410 enum ieee80211_band band = nla_type(tx_rates);
8411 int err;
8412
8413 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8414 return -EINVAL;
8415 sband = rdev->wiphy.bands[band];
8416 if (sband == NULL)
8417 return -EINVAL;
8418 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8419 nla_len(tx_rates), nl80211_txattr_policy);
8420 if (err)
8421 return err;
8422 if (tb[NL80211_TXRATE_LEGACY]) {
8423 mask.control[band].legacy = rateset_to_mask(
8424 sband,
8425 nla_data(tb[NL80211_TXRATE_LEGACY]),
8426 nla_len(tb[NL80211_TXRATE_LEGACY]));
8427 if ((mask.control[band].legacy == 0) &&
8428 nla_len(tb[NL80211_TXRATE_LEGACY]))
8429 return -EINVAL;
8430 }
8431 if (tb[NL80211_TXRATE_HT]) {
8432 if (!ht_rateset_to_mask(
8433 sband,
8434 nla_data(tb[NL80211_TXRATE_HT]),
8435 nla_len(tb[NL80211_TXRATE_HT]),
8436 mask.control[band].ht_mcs))
8437 return -EINVAL;
8438 }
8439 if (tb[NL80211_TXRATE_VHT]) {
8440 if (!vht_set_mcs_mask(
8441 sband,
8442 nla_data(tb[NL80211_TXRATE_VHT]),
8443 mask.control[band].vht_mcs))
8444 return -EINVAL;
8445 }
8446 if (tb[NL80211_TXRATE_GI]) {
8447 mask.control[band].gi =
8448 nla_get_u8(tb[NL80211_TXRATE_GI]);
8449 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8450 return -EINVAL;
8451 }
8452
8453 if (mask.control[band].legacy == 0) {
8454 /* don't allow empty legacy rates if HT or VHT
8455 * are not even supported.
8456 */
8457 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8458 rdev->wiphy.bands[band]->vht_cap.vht_supported))
8459 return -EINVAL;
8460
8461 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8462 if (mask.control[band].ht_mcs[i])
8463 goto out;
8464
8465 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8466 if (mask.control[band].vht_mcs[i])
8467 goto out;
8468
8469 /* legacy and mcs rates may not be both empty */
8470 return -EINVAL;
8471 }
8472 }
8473
8474 out:
8475 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8476 }
8477
8478 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8479 {
8480 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8481 struct wireless_dev *wdev = info->user_ptr[1];
8482 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8483
8484 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8485 return -EINVAL;
8486
8487 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8488 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8489
8490 switch (wdev->iftype) {
8491 case NL80211_IFTYPE_STATION:
8492 case NL80211_IFTYPE_ADHOC:
8493 case NL80211_IFTYPE_P2P_CLIENT:
8494 case NL80211_IFTYPE_AP:
8495 case NL80211_IFTYPE_AP_VLAN:
8496 case NL80211_IFTYPE_MESH_POINT:
8497 case NL80211_IFTYPE_P2P_GO:
8498 case NL80211_IFTYPE_P2P_DEVICE:
8499 break;
8500 default:
8501 return -EOPNOTSUPP;
8502 }
8503
8504 /* not much point in registering if we can't reply */
8505 if (!rdev->ops->mgmt_tx)
8506 return -EOPNOTSUPP;
8507
8508 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8509 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8510 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8511 }
8512
8513 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8514 {
8515 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8516 struct wireless_dev *wdev = info->user_ptr[1];
8517 struct cfg80211_chan_def chandef;
8518 int err;
8519 void *hdr = NULL;
8520 u64 cookie;
8521 struct sk_buff *msg = NULL;
8522 struct cfg80211_mgmt_tx_params params = {
8523 .dont_wait_for_ack =
8524 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8525 };
8526
8527 if (!info->attrs[NL80211_ATTR_FRAME])
8528 return -EINVAL;
8529
8530 if (!rdev->ops->mgmt_tx)
8531 return -EOPNOTSUPP;
8532
8533 switch (wdev->iftype) {
8534 case NL80211_IFTYPE_P2P_DEVICE:
8535 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8536 return -EINVAL;
8537 case NL80211_IFTYPE_STATION:
8538 case NL80211_IFTYPE_ADHOC:
8539 case NL80211_IFTYPE_P2P_CLIENT:
8540 case NL80211_IFTYPE_AP:
8541 case NL80211_IFTYPE_AP_VLAN:
8542 case NL80211_IFTYPE_MESH_POINT:
8543 case NL80211_IFTYPE_P2P_GO:
8544 break;
8545 default:
8546 return -EOPNOTSUPP;
8547 }
8548
8549 if (info->attrs[NL80211_ATTR_DURATION]) {
8550 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8551 return -EINVAL;
8552 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8553
8554 /*
8555 * We should wait on the channel for at least a minimum amount
8556 * of time (10ms) but no longer than the driver supports.
8557 */
8558 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8559 params.wait > rdev->wiphy.max_remain_on_channel_duration)
8560 return -EINVAL;
8561
8562 }
8563
8564 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8565
8566 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8567 return -EINVAL;
8568
8569 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8570
8571 /* get the channel if any has been specified, otherwise pass NULL to
8572 * the driver. The latter will use the current one
8573 */
8574 chandef.chan = NULL;
8575 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8576 err = nl80211_parse_chandef(rdev, info, &chandef);
8577 if (err)
8578 return err;
8579 }
8580
8581 if (!chandef.chan && params.offchan)
8582 return -EINVAL;
8583
8584 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8585 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8586
8587 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8588 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8589 int i;
8590
8591 if (len % sizeof(u16))
8592 return -EINVAL;
8593
8594 params.n_csa_offsets = len / sizeof(u16);
8595 params.csa_offsets =
8596 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8597
8598 /* check that all the offsets fit the frame */
8599 for (i = 0; i < params.n_csa_offsets; i++) {
8600 if (params.csa_offsets[i] >= params.len)
8601 return -EINVAL;
8602 }
8603 }
8604
8605 if (!params.dont_wait_for_ack) {
8606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8607 if (!msg)
8608 return -ENOMEM;
8609
8610 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8611 NL80211_CMD_FRAME);
8612 if (!hdr) {
8613 err = -ENOBUFS;
8614 goto free_msg;
8615 }
8616 }
8617
8618 params.chan = chandef.chan;
8619 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8620 if (err)
8621 goto free_msg;
8622
8623 if (msg) {
8624 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8625 goto nla_put_failure;
8626
8627 genlmsg_end(msg, hdr);
8628 return genlmsg_reply(msg, info);
8629 }
8630
8631 return 0;
8632
8633 nla_put_failure:
8634 err = -ENOBUFS;
8635 free_msg:
8636 nlmsg_free(msg);
8637 return err;
8638 }
8639
8640 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8641 {
8642 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8643 struct wireless_dev *wdev = info->user_ptr[1];
8644 u64 cookie;
8645
8646 if (!info->attrs[NL80211_ATTR_COOKIE])
8647 return -EINVAL;
8648
8649 if (!rdev->ops->mgmt_tx_cancel_wait)
8650 return -EOPNOTSUPP;
8651
8652 switch (wdev->iftype) {
8653 case NL80211_IFTYPE_STATION:
8654 case NL80211_IFTYPE_ADHOC:
8655 case NL80211_IFTYPE_P2P_CLIENT:
8656 case NL80211_IFTYPE_AP:
8657 case NL80211_IFTYPE_AP_VLAN:
8658 case NL80211_IFTYPE_P2P_GO:
8659 case NL80211_IFTYPE_P2P_DEVICE:
8660 break;
8661 default:
8662 return -EOPNOTSUPP;
8663 }
8664
8665 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8666
8667 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8668 }
8669
8670 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8671 {
8672 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8673 struct wireless_dev *wdev;
8674 struct net_device *dev = info->user_ptr[1];
8675 u8 ps_state;
8676 bool state;
8677 int err;
8678
8679 if (!info->attrs[NL80211_ATTR_PS_STATE])
8680 return -EINVAL;
8681
8682 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8683
8684 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8685 return -EINVAL;
8686
8687 wdev = dev->ieee80211_ptr;
8688
8689 if (!rdev->ops->set_power_mgmt)
8690 return -EOPNOTSUPP;
8691
8692 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8693
8694 if (state == wdev->ps)
8695 return 0;
8696
8697 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8698 if (!err)
8699 wdev->ps = state;
8700 return err;
8701 }
8702
8703 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8704 {
8705 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8706 enum nl80211_ps_state ps_state;
8707 struct wireless_dev *wdev;
8708 struct net_device *dev = info->user_ptr[1];
8709 struct sk_buff *msg;
8710 void *hdr;
8711 int err;
8712
8713 wdev = dev->ieee80211_ptr;
8714
8715 if (!rdev->ops->set_power_mgmt)
8716 return -EOPNOTSUPP;
8717
8718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8719 if (!msg)
8720 return -ENOMEM;
8721
8722 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8723 NL80211_CMD_GET_POWER_SAVE);
8724 if (!hdr) {
8725 err = -ENOBUFS;
8726 goto free_msg;
8727 }
8728
8729 if (wdev->ps)
8730 ps_state = NL80211_PS_ENABLED;
8731 else
8732 ps_state = NL80211_PS_DISABLED;
8733
8734 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8735 goto nla_put_failure;
8736
8737 genlmsg_end(msg, hdr);
8738 return genlmsg_reply(msg, info);
8739
8740 nla_put_failure:
8741 err = -ENOBUFS;
8742 free_msg:
8743 nlmsg_free(msg);
8744 return err;
8745 }
8746
8747 static const struct nla_policy
8748 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8749 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8750 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8751 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8752 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8753 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8754 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8755 };
8756
8757 static int nl80211_set_cqm_txe(struct genl_info *info,
8758 u32 rate, u32 pkts, u32 intvl)
8759 {
8760 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8761 struct net_device *dev = info->user_ptr[1];
8762 struct wireless_dev *wdev = dev->ieee80211_ptr;
8763
8764 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8765 return -EINVAL;
8766
8767 if (!rdev->ops->set_cqm_txe_config)
8768 return -EOPNOTSUPP;
8769
8770 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8771 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8772 return -EOPNOTSUPP;
8773
8774 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8775 }
8776
8777 static int nl80211_set_cqm_rssi(struct genl_info *info,
8778 s32 threshold, u32 hysteresis)
8779 {
8780 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8781 struct net_device *dev = info->user_ptr[1];
8782 struct wireless_dev *wdev = dev->ieee80211_ptr;
8783
8784 if (threshold > 0)
8785 return -EINVAL;
8786
8787 /* disabling - hysteresis should also be zero then */
8788 if (threshold == 0)
8789 hysteresis = 0;
8790
8791 if (!rdev->ops->set_cqm_rssi_config)
8792 return -EOPNOTSUPP;
8793
8794 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8795 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8796 return -EOPNOTSUPP;
8797
8798 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8799 }
8800
8801 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8802 {
8803 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8804 struct nlattr *cqm;
8805 int err;
8806
8807 cqm = info->attrs[NL80211_ATTR_CQM];
8808 if (!cqm)
8809 return -EINVAL;
8810
8811 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8812 nl80211_attr_cqm_policy);
8813 if (err)
8814 return err;
8815
8816 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8817 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8818 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8819 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8820
8821 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8822 }
8823
8824 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8825 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8826 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8827 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8828 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8829 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8830
8831 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8832 }
8833
8834 return -EINVAL;
8835 }
8836
8837 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8838 {
8839 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8840 struct net_device *dev = info->user_ptr[1];
8841 struct ocb_setup setup = {};
8842 int err;
8843
8844 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8845 if (err)
8846 return err;
8847
8848 return cfg80211_join_ocb(rdev, dev, &setup);
8849 }
8850
8851 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8852 {
8853 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8854 struct net_device *dev = info->user_ptr[1];
8855
8856 return cfg80211_leave_ocb(rdev, dev);
8857 }
8858
8859 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8860 {
8861 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8862 struct net_device *dev = info->user_ptr[1];
8863 struct mesh_config cfg;
8864 struct mesh_setup setup;
8865 int err;
8866
8867 /* start with default */
8868 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8869 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8870
8871 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8872 /* and parse parameters if given */
8873 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8874 if (err)
8875 return err;
8876 }
8877
8878 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8879 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8880 return -EINVAL;
8881
8882 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8883 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8884
8885 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8886 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8887 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8888 return -EINVAL;
8889
8890 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8891 setup.beacon_interval =
8892 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8893 if (setup.beacon_interval < 10 ||
8894 setup.beacon_interval > 10000)
8895 return -EINVAL;
8896 }
8897
8898 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8899 setup.dtim_period =
8900 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8901 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8902 return -EINVAL;
8903 }
8904
8905 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8906 /* parse additional setup parameters if given */
8907 err = nl80211_parse_mesh_setup(info, &setup);
8908 if (err)
8909 return err;
8910 }
8911
8912 if (setup.user_mpm)
8913 cfg.auto_open_plinks = false;
8914
8915 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8916 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8917 if (err)
8918 return err;
8919 } else {
8920 /* cfg80211_join_mesh() will sort it out */
8921 setup.chandef.chan = NULL;
8922 }
8923
8924 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8925 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8926 int n_rates =
8927 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8928 struct ieee80211_supported_band *sband;
8929
8930 if (!setup.chandef.chan)
8931 return -EINVAL;
8932
8933 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8934
8935 err = ieee80211_get_ratemask(sband, rates, n_rates,
8936 &setup.basic_rates);
8937 if (err)
8938 return err;
8939 }
8940
8941 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8942 }
8943
8944 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8945 {
8946 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8947 struct net_device *dev = info->user_ptr[1];
8948
8949 return cfg80211_leave_mesh(rdev, dev);
8950 }
8951
8952 #ifdef CONFIG_PM
8953 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8954 struct cfg80211_registered_device *rdev)
8955 {
8956 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8957 struct nlattr *nl_pats, *nl_pat;
8958 int i, pat_len;
8959
8960 if (!wowlan->n_patterns)
8961 return 0;
8962
8963 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8964 if (!nl_pats)
8965 return -ENOBUFS;
8966
8967 for (i = 0; i < wowlan->n_patterns; i++) {
8968 nl_pat = nla_nest_start(msg, i + 1);
8969 if (!nl_pat)
8970 return -ENOBUFS;
8971 pat_len = wowlan->patterns[i].pattern_len;
8972 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8973 wowlan->patterns[i].mask) ||
8974 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8975 wowlan->patterns[i].pattern) ||
8976 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8977 wowlan->patterns[i].pkt_offset))
8978 return -ENOBUFS;
8979 nla_nest_end(msg, nl_pat);
8980 }
8981 nla_nest_end(msg, nl_pats);
8982
8983 return 0;
8984 }
8985
8986 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8987 struct cfg80211_wowlan_tcp *tcp)
8988 {
8989 struct nlattr *nl_tcp;
8990
8991 if (!tcp)
8992 return 0;
8993
8994 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8995 if (!nl_tcp)
8996 return -ENOBUFS;
8997
8998 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8999 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
9000 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
9001 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
9002 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
9003 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
9004 tcp->payload_len, tcp->payload) ||
9005 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
9006 tcp->data_interval) ||
9007 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
9008 tcp->wake_len, tcp->wake_data) ||
9009 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
9010 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
9011 return -ENOBUFS;
9012
9013 if (tcp->payload_seq.len &&
9014 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
9015 sizeof(tcp->payload_seq), &tcp->payload_seq))
9016 return -ENOBUFS;
9017
9018 if (tcp->payload_tok.len &&
9019 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
9020 sizeof(tcp->payload_tok) + tcp->tokens_size,
9021 &tcp->payload_tok))
9022 return -ENOBUFS;
9023
9024 nla_nest_end(msg, nl_tcp);
9025
9026 return 0;
9027 }
9028
9029 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
9030 struct cfg80211_sched_scan_request *req)
9031 {
9032 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
9033 int i;
9034
9035 if (!req)
9036 return 0;
9037
9038 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
9039 if (!nd)
9040 return -ENOBUFS;
9041
9042 if (req->n_scan_plans == 1 &&
9043 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
9044 req->scan_plans[0].interval * 1000))
9045 return -ENOBUFS;
9046
9047 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
9048 return -ENOBUFS;
9049
9050 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9051 if (!freqs)
9052 return -ENOBUFS;
9053
9054 for (i = 0; i < req->n_channels; i++)
9055 nla_put_u32(msg, i, req->channels[i]->center_freq);
9056
9057 nla_nest_end(msg, freqs);
9058
9059 if (req->n_match_sets) {
9060 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
9061 for (i = 0; i < req->n_match_sets; i++) {
9062 match = nla_nest_start(msg, i);
9063 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
9064 req->match_sets[i].ssid.ssid_len,
9065 req->match_sets[i].ssid.ssid);
9066 nla_nest_end(msg, match);
9067 }
9068 nla_nest_end(msg, matches);
9069 }
9070
9071 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
9072 if (!scan_plans)
9073 return -ENOBUFS;
9074
9075 for (i = 0; i < req->n_scan_plans; i++) {
9076 scan_plan = nla_nest_start(msg, i + 1);
9077 if (!scan_plan ||
9078 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
9079 req->scan_plans[i].interval) ||
9080 (req->scan_plans[i].iterations &&
9081 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
9082 req->scan_plans[i].iterations)))
9083 return -ENOBUFS;
9084 nla_nest_end(msg, scan_plan);
9085 }
9086 nla_nest_end(msg, scan_plans);
9087
9088 nla_nest_end(msg, nd);
9089
9090 return 0;
9091 }
9092
9093 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
9094 {
9095 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9096 struct sk_buff *msg;
9097 void *hdr;
9098 u32 size = NLMSG_DEFAULT_SIZE;
9099
9100 if (!rdev->wiphy.wowlan)
9101 return -EOPNOTSUPP;
9102
9103 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
9104 /* adjust size to have room for all the data */
9105 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
9106 rdev->wiphy.wowlan_config->tcp->payload_len +
9107 rdev->wiphy.wowlan_config->tcp->wake_len +
9108 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
9109 }
9110
9111 msg = nlmsg_new(size, GFP_KERNEL);
9112 if (!msg)
9113 return -ENOMEM;
9114
9115 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9116 NL80211_CMD_GET_WOWLAN);
9117 if (!hdr)
9118 goto nla_put_failure;
9119
9120 if (rdev->wiphy.wowlan_config) {
9121 struct nlattr *nl_wowlan;
9122
9123 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
9124 if (!nl_wowlan)
9125 goto nla_put_failure;
9126
9127 if ((rdev->wiphy.wowlan_config->any &&
9128 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
9129 (rdev->wiphy.wowlan_config->disconnect &&
9130 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
9131 (rdev->wiphy.wowlan_config->magic_pkt &&
9132 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
9133 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
9134 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
9135 (rdev->wiphy.wowlan_config->eap_identity_req &&
9136 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
9137 (rdev->wiphy.wowlan_config->four_way_handshake &&
9138 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
9139 (rdev->wiphy.wowlan_config->rfkill_release &&
9140 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
9141 goto nla_put_failure;
9142
9143 if (nl80211_send_wowlan_patterns(msg, rdev))
9144 goto nla_put_failure;
9145
9146 if (nl80211_send_wowlan_tcp(msg,
9147 rdev->wiphy.wowlan_config->tcp))
9148 goto nla_put_failure;
9149
9150 if (nl80211_send_wowlan_nd(
9151 msg,
9152 rdev->wiphy.wowlan_config->nd_config))
9153 goto nla_put_failure;
9154
9155 nla_nest_end(msg, nl_wowlan);
9156 }
9157
9158 genlmsg_end(msg, hdr);
9159 return genlmsg_reply(msg, info);
9160
9161 nla_put_failure:
9162 nlmsg_free(msg);
9163 return -ENOBUFS;
9164 }
9165
9166 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
9167 struct nlattr *attr,
9168 struct cfg80211_wowlan *trig)
9169 {
9170 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
9171 struct cfg80211_wowlan_tcp *cfg;
9172 struct nl80211_wowlan_tcp_data_token *tok = NULL;
9173 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
9174 u32 size;
9175 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
9176 int err, port;
9177
9178 if (!rdev->wiphy.wowlan->tcp)
9179 return -EINVAL;
9180
9181 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
9182 nla_data(attr), nla_len(attr),
9183 nl80211_wowlan_tcp_policy);
9184 if (err)
9185 return err;
9186
9187 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
9188 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
9189 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
9190 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
9191 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
9192 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
9193 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
9194 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
9195 return -EINVAL;
9196
9197 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
9198 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
9199 return -EINVAL;
9200
9201 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
9202 rdev->wiphy.wowlan->tcp->data_interval_max ||
9203 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
9204 return -EINVAL;
9205
9206 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
9207 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
9208 return -EINVAL;
9209
9210 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
9211 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
9212 return -EINVAL;
9213
9214 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
9215 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9216
9217 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
9218 tokens_size = tokln - sizeof(*tok);
9219
9220 if (!tok->len || tokens_size % tok->len)
9221 return -EINVAL;
9222 if (!rdev->wiphy.wowlan->tcp->tok)
9223 return -EINVAL;
9224 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9225 return -EINVAL;
9226 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9227 return -EINVAL;
9228 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9229 return -EINVAL;
9230 if (tok->offset + tok->len > data_size)
9231 return -EINVAL;
9232 }
9233
9234 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9235 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9236 if (!rdev->wiphy.wowlan->tcp->seq)
9237 return -EINVAL;
9238 if (seq->len == 0 || seq->len > 4)
9239 return -EINVAL;
9240 if (seq->len + seq->offset > data_size)
9241 return -EINVAL;
9242 }
9243
9244 size = sizeof(*cfg);
9245 size += data_size;
9246 size += wake_size + wake_mask_size;
9247 size += tokens_size;
9248
9249 cfg = kzalloc(size, GFP_KERNEL);
9250 if (!cfg)
9251 return -ENOMEM;
9252 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9253 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9254 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9255 ETH_ALEN);
9256 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9257 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9258 else
9259 port = 0;
9260 #ifdef CONFIG_INET
9261 /* allocate a socket and port for it and use it */
9262 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9263 IPPROTO_TCP, &cfg->sock, 1);
9264 if (err) {
9265 kfree(cfg);
9266 return err;
9267 }
9268 if (inet_csk_get_port(cfg->sock->sk, port)) {
9269 sock_release(cfg->sock);
9270 kfree(cfg);
9271 return -EADDRINUSE;
9272 }
9273 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9274 #else
9275 if (!port) {
9276 kfree(cfg);
9277 return -EINVAL;
9278 }
9279 cfg->src_port = port;
9280 #endif
9281
9282 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9283 cfg->payload_len = data_size;
9284 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9285 memcpy((void *)cfg->payload,
9286 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9287 data_size);
9288 if (seq)
9289 cfg->payload_seq = *seq;
9290 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9291 cfg->wake_len = wake_size;
9292 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9293 memcpy((void *)cfg->wake_data,
9294 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9295 wake_size);
9296 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9297 data_size + wake_size;
9298 memcpy((void *)cfg->wake_mask,
9299 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9300 wake_mask_size);
9301 if (tok) {
9302 cfg->tokens_size = tokens_size;
9303 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9304 }
9305
9306 trig->tcp = cfg;
9307
9308 return 0;
9309 }
9310
9311 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9312 const struct wiphy_wowlan_support *wowlan,
9313 struct nlattr *attr,
9314 struct cfg80211_wowlan *trig)
9315 {
9316 struct nlattr **tb;
9317 int err;
9318
9319 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9320 if (!tb)
9321 return -ENOMEM;
9322
9323 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9324 err = -EOPNOTSUPP;
9325 goto out;
9326 }
9327
9328 err = nla_parse(tb, NL80211_ATTR_MAX,
9329 nla_data(attr), nla_len(attr),
9330 nl80211_policy);
9331 if (err)
9332 goto out;
9333
9334 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9335 err = PTR_ERR_OR_ZERO(trig->nd_config);
9336 if (err)
9337 trig->nd_config = NULL;
9338
9339 out:
9340 kfree(tb);
9341 return err;
9342 }
9343
9344 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9345 {
9346 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9347 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9348 struct cfg80211_wowlan new_triggers = {};
9349 struct cfg80211_wowlan *ntrig;
9350 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9351 int err, i;
9352 bool prev_enabled = rdev->wiphy.wowlan_config;
9353 bool regular = false;
9354
9355 if (!wowlan)
9356 return -EOPNOTSUPP;
9357
9358 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9359 cfg80211_rdev_free_wowlan(rdev);
9360 rdev->wiphy.wowlan_config = NULL;
9361 goto set_wakeup;
9362 }
9363
9364 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9365 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9366 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9367 nl80211_wowlan_policy);
9368 if (err)
9369 return err;
9370
9371 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9372 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9373 return -EINVAL;
9374 new_triggers.any = true;
9375 }
9376
9377 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9378 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9379 return -EINVAL;
9380 new_triggers.disconnect = true;
9381 regular = true;
9382 }
9383
9384 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9385 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9386 return -EINVAL;
9387 new_triggers.magic_pkt = true;
9388 regular = true;
9389 }
9390
9391 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9392 return -EINVAL;
9393
9394 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9395 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9396 return -EINVAL;
9397 new_triggers.gtk_rekey_failure = true;
9398 regular = true;
9399 }
9400
9401 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9402 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9403 return -EINVAL;
9404 new_triggers.eap_identity_req = true;
9405 regular = true;
9406 }
9407
9408 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9409 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9410 return -EINVAL;
9411 new_triggers.four_way_handshake = true;
9412 regular = true;
9413 }
9414
9415 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9416 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9417 return -EINVAL;
9418 new_triggers.rfkill_release = true;
9419 regular = true;
9420 }
9421
9422 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9423 struct nlattr *pat;
9424 int n_patterns = 0;
9425 int rem, pat_len, mask_len, pkt_offset;
9426 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9427
9428 regular = true;
9429
9430 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9431 rem)
9432 n_patterns++;
9433 if (n_patterns > wowlan->n_patterns)
9434 return -EINVAL;
9435
9436 new_triggers.patterns = kcalloc(n_patterns,
9437 sizeof(new_triggers.patterns[0]),
9438 GFP_KERNEL);
9439 if (!new_triggers.patterns)
9440 return -ENOMEM;
9441
9442 new_triggers.n_patterns = n_patterns;
9443 i = 0;
9444
9445 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9446 rem) {
9447 u8 *mask_pat;
9448
9449 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9450 nla_len(pat), NULL);
9451 err = -EINVAL;
9452 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9453 !pat_tb[NL80211_PKTPAT_PATTERN])
9454 goto error;
9455 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9456 mask_len = DIV_ROUND_UP(pat_len, 8);
9457 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9458 goto error;
9459 if (pat_len > wowlan->pattern_max_len ||
9460 pat_len < wowlan->pattern_min_len)
9461 goto error;
9462
9463 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9464 pkt_offset = 0;
9465 else
9466 pkt_offset = nla_get_u32(
9467 pat_tb[NL80211_PKTPAT_OFFSET]);
9468 if (pkt_offset > wowlan->max_pkt_offset)
9469 goto error;
9470 new_triggers.patterns[i].pkt_offset = pkt_offset;
9471
9472 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9473 if (!mask_pat) {
9474 err = -ENOMEM;
9475 goto error;
9476 }
9477 new_triggers.patterns[i].mask = mask_pat;
9478 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9479 mask_len);
9480 mask_pat += mask_len;
9481 new_triggers.patterns[i].pattern = mask_pat;
9482 new_triggers.patterns[i].pattern_len = pat_len;
9483 memcpy(mask_pat,
9484 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9485 pat_len);
9486 i++;
9487 }
9488 }
9489
9490 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9491 regular = true;
9492 err = nl80211_parse_wowlan_tcp(
9493 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9494 &new_triggers);
9495 if (err)
9496 goto error;
9497 }
9498
9499 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9500 regular = true;
9501 err = nl80211_parse_wowlan_nd(
9502 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9503 &new_triggers);
9504 if (err)
9505 goto error;
9506 }
9507
9508 /* The 'any' trigger means the device continues operating more or less
9509 * as in its normal operation mode and wakes up the host on most of the
9510 * normal interrupts (like packet RX, ...)
9511 * It therefore makes little sense to combine with the more constrained
9512 * wakeup trigger modes.
9513 */
9514 if (new_triggers.any && regular) {
9515 err = -EINVAL;
9516 goto error;
9517 }
9518
9519 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9520 if (!ntrig) {
9521 err = -ENOMEM;
9522 goto error;
9523 }
9524 cfg80211_rdev_free_wowlan(rdev);
9525 rdev->wiphy.wowlan_config = ntrig;
9526
9527 set_wakeup:
9528 if (rdev->ops->set_wakeup &&
9529 prev_enabled != !!rdev->wiphy.wowlan_config)
9530 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9531
9532 return 0;
9533 error:
9534 for (i = 0; i < new_triggers.n_patterns; i++)
9535 kfree(new_triggers.patterns[i].mask);
9536 kfree(new_triggers.patterns);
9537 if (new_triggers.tcp && new_triggers.tcp->sock)
9538 sock_release(new_triggers.tcp->sock);
9539 kfree(new_triggers.tcp);
9540 kfree(new_triggers.nd_config);
9541 return err;
9542 }
9543 #endif
9544
9545 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9546 struct cfg80211_registered_device *rdev)
9547 {
9548 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9549 int i, j, pat_len;
9550 struct cfg80211_coalesce_rules *rule;
9551
9552 if (!rdev->coalesce->n_rules)
9553 return 0;
9554
9555 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9556 if (!nl_rules)
9557 return -ENOBUFS;
9558
9559 for (i = 0; i < rdev->coalesce->n_rules; i++) {
9560 nl_rule = nla_nest_start(msg, i + 1);
9561 if (!nl_rule)
9562 return -ENOBUFS;
9563
9564 rule = &rdev->coalesce->rules[i];
9565 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9566 rule->delay))
9567 return -ENOBUFS;
9568
9569 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9570 rule->condition))
9571 return -ENOBUFS;
9572
9573 nl_pats = nla_nest_start(msg,
9574 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9575 if (!nl_pats)
9576 return -ENOBUFS;
9577
9578 for (j = 0; j < rule->n_patterns; j++) {
9579 nl_pat = nla_nest_start(msg, j + 1);
9580 if (!nl_pat)
9581 return -ENOBUFS;
9582 pat_len = rule->patterns[j].pattern_len;
9583 if (nla_put(msg, NL80211_PKTPAT_MASK,
9584 DIV_ROUND_UP(pat_len, 8),
9585 rule->patterns[j].mask) ||
9586 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9587 rule->patterns[j].pattern) ||
9588 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9589 rule->patterns[j].pkt_offset))
9590 return -ENOBUFS;
9591 nla_nest_end(msg, nl_pat);
9592 }
9593 nla_nest_end(msg, nl_pats);
9594 nla_nest_end(msg, nl_rule);
9595 }
9596 nla_nest_end(msg, nl_rules);
9597
9598 return 0;
9599 }
9600
9601 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9602 {
9603 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9604 struct sk_buff *msg;
9605 void *hdr;
9606
9607 if (!rdev->wiphy.coalesce)
9608 return -EOPNOTSUPP;
9609
9610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9611 if (!msg)
9612 return -ENOMEM;
9613
9614 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9615 NL80211_CMD_GET_COALESCE);
9616 if (!hdr)
9617 goto nla_put_failure;
9618
9619 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9620 goto nla_put_failure;
9621
9622 genlmsg_end(msg, hdr);
9623 return genlmsg_reply(msg, info);
9624
9625 nla_put_failure:
9626 nlmsg_free(msg);
9627 return -ENOBUFS;
9628 }
9629
9630 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9631 {
9632 struct cfg80211_coalesce *coalesce = rdev->coalesce;
9633 int i, j;
9634 struct cfg80211_coalesce_rules *rule;
9635
9636 if (!coalesce)
9637 return;
9638
9639 for (i = 0; i < coalesce->n_rules; i++) {
9640 rule = &coalesce->rules[i];
9641 for (j = 0; j < rule->n_patterns; j++)
9642 kfree(rule->patterns[j].mask);
9643 kfree(rule->patterns);
9644 }
9645 kfree(coalesce->rules);
9646 kfree(coalesce);
9647 rdev->coalesce = NULL;
9648 }
9649
9650 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9651 struct nlattr *rule,
9652 struct cfg80211_coalesce_rules *new_rule)
9653 {
9654 int err, i;
9655 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9656 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9657 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9658 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9659
9660 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9661 nla_len(rule), nl80211_coalesce_policy);
9662 if (err)
9663 return err;
9664
9665 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9666 new_rule->delay =
9667 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9668 if (new_rule->delay > coalesce->max_delay)
9669 return -EINVAL;
9670
9671 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9672 new_rule->condition =
9673 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9674 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9675 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9676 return -EINVAL;
9677
9678 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9679 return -EINVAL;
9680
9681 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9682 rem)
9683 n_patterns++;
9684 if (n_patterns > coalesce->n_patterns)
9685 return -EINVAL;
9686
9687 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9688 GFP_KERNEL);
9689 if (!new_rule->patterns)
9690 return -ENOMEM;
9691
9692 new_rule->n_patterns = n_patterns;
9693 i = 0;
9694
9695 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9696 rem) {
9697 u8 *mask_pat;
9698
9699 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9700 nla_len(pat), NULL);
9701 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9702 !pat_tb[NL80211_PKTPAT_PATTERN])
9703 return -EINVAL;
9704 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9705 mask_len = DIV_ROUND_UP(pat_len, 8);
9706 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9707 return -EINVAL;
9708 if (pat_len > coalesce->pattern_max_len ||
9709 pat_len < coalesce->pattern_min_len)
9710 return -EINVAL;
9711
9712 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9713 pkt_offset = 0;
9714 else
9715 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9716 if (pkt_offset > coalesce->max_pkt_offset)
9717 return -EINVAL;
9718 new_rule->patterns[i].pkt_offset = pkt_offset;
9719
9720 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9721 if (!mask_pat)
9722 return -ENOMEM;
9723
9724 new_rule->patterns[i].mask = mask_pat;
9725 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9726 mask_len);
9727
9728 mask_pat += mask_len;
9729 new_rule->patterns[i].pattern = mask_pat;
9730 new_rule->patterns[i].pattern_len = pat_len;
9731 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9732 pat_len);
9733 i++;
9734 }
9735
9736 return 0;
9737 }
9738
9739 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9740 {
9741 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9742 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9743 struct cfg80211_coalesce new_coalesce = {};
9744 struct cfg80211_coalesce *n_coalesce;
9745 int err, rem_rule, n_rules = 0, i, j;
9746 struct nlattr *rule;
9747 struct cfg80211_coalesce_rules *tmp_rule;
9748
9749 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9750 return -EOPNOTSUPP;
9751
9752 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9753 cfg80211_rdev_free_coalesce(rdev);
9754 rdev_set_coalesce(rdev, NULL);
9755 return 0;
9756 }
9757
9758 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9759 rem_rule)
9760 n_rules++;
9761 if (n_rules > coalesce->n_rules)
9762 return -EINVAL;
9763
9764 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9765 GFP_KERNEL);
9766 if (!new_coalesce.rules)
9767 return -ENOMEM;
9768
9769 new_coalesce.n_rules = n_rules;
9770 i = 0;
9771
9772 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9773 rem_rule) {
9774 err = nl80211_parse_coalesce_rule(rdev, rule,
9775 &new_coalesce.rules[i]);
9776 if (err)
9777 goto error;
9778
9779 i++;
9780 }
9781
9782 err = rdev_set_coalesce(rdev, &new_coalesce);
9783 if (err)
9784 goto error;
9785
9786 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9787 if (!n_coalesce) {
9788 err = -ENOMEM;
9789 goto error;
9790 }
9791 cfg80211_rdev_free_coalesce(rdev);
9792 rdev->coalesce = n_coalesce;
9793
9794 return 0;
9795 error:
9796 for (i = 0; i < new_coalesce.n_rules; i++) {
9797 tmp_rule = &new_coalesce.rules[i];
9798 for (j = 0; j < tmp_rule->n_patterns; j++)
9799 kfree(tmp_rule->patterns[j].mask);
9800 kfree(tmp_rule->patterns);
9801 }
9802 kfree(new_coalesce.rules);
9803
9804 return err;
9805 }
9806
9807 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9808 {
9809 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9810 struct net_device *dev = info->user_ptr[1];
9811 struct wireless_dev *wdev = dev->ieee80211_ptr;
9812 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9813 struct cfg80211_gtk_rekey_data rekey_data;
9814 int err;
9815
9816 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9817 return -EINVAL;
9818
9819 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9820 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9821 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9822 nl80211_rekey_policy);
9823 if (err)
9824 return err;
9825
9826 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9827 return -ERANGE;
9828 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9829 return -ERANGE;
9830 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9831 return -ERANGE;
9832
9833 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9834 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9835 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9836
9837 wdev_lock(wdev);
9838 if (!wdev->current_bss) {
9839 err = -ENOTCONN;
9840 goto out;
9841 }
9842
9843 if (!rdev->ops->set_rekey_data) {
9844 err = -EOPNOTSUPP;
9845 goto out;
9846 }
9847
9848 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9849 out:
9850 wdev_unlock(wdev);
9851 return err;
9852 }
9853
9854 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9855 struct genl_info *info)
9856 {
9857 struct net_device *dev = info->user_ptr[1];
9858 struct wireless_dev *wdev = dev->ieee80211_ptr;
9859
9860 if (wdev->iftype != NL80211_IFTYPE_AP &&
9861 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9862 return -EINVAL;
9863
9864 if (wdev->ap_unexpected_nlportid)
9865 return -EBUSY;
9866
9867 wdev->ap_unexpected_nlportid = info->snd_portid;
9868 return 0;
9869 }
9870
9871 static int nl80211_probe_client(struct sk_buff *skb,
9872 struct genl_info *info)
9873 {
9874 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9875 struct net_device *dev = info->user_ptr[1];
9876 struct wireless_dev *wdev = dev->ieee80211_ptr;
9877 struct sk_buff *msg;
9878 void *hdr;
9879 const u8 *addr;
9880 u64 cookie;
9881 int err;
9882
9883 if (wdev->iftype != NL80211_IFTYPE_AP &&
9884 wdev->iftype != NL80211_IFTYPE_P2P_GO)
9885 return -EOPNOTSUPP;
9886
9887 if (!info->attrs[NL80211_ATTR_MAC])
9888 return -EINVAL;
9889
9890 if (!rdev->ops->probe_client)
9891 return -EOPNOTSUPP;
9892
9893 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9894 if (!msg)
9895 return -ENOMEM;
9896
9897 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9898 NL80211_CMD_PROBE_CLIENT);
9899 if (!hdr) {
9900 err = -ENOBUFS;
9901 goto free_msg;
9902 }
9903
9904 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9905
9906 err = rdev_probe_client(rdev, dev, addr, &cookie);
9907 if (err)
9908 goto free_msg;
9909
9910 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9911 goto nla_put_failure;
9912
9913 genlmsg_end(msg, hdr);
9914
9915 return genlmsg_reply(msg, info);
9916
9917 nla_put_failure:
9918 err = -ENOBUFS;
9919 free_msg:
9920 nlmsg_free(msg);
9921 return err;
9922 }
9923
9924 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9925 {
9926 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9927 struct cfg80211_beacon_registration *reg, *nreg;
9928 int rv;
9929
9930 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9931 return -EOPNOTSUPP;
9932
9933 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9934 if (!nreg)
9935 return -ENOMEM;
9936
9937 /* First, check if already registered. */
9938 spin_lock_bh(&rdev->beacon_registrations_lock);
9939 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9940 if (reg->nlportid == info->snd_portid) {
9941 rv = -EALREADY;
9942 goto out_err;
9943 }
9944 }
9945 /* Add it to the list */
9946 nreg->nlportid = info->snd_portid;
9947 list_add(&nreg->list, &rdev->beacon_registrations);
9948
9949 spin_unlock_bh(&rdev->beacon_registrations_lock);
9950
9951 return 0;
9952 out_err:
9953 spin_unlock_bh(&rdev->beacon_registrations_lock);
9954 kfree(nreg);
9955 return rv;
9956 }
9957
9958 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9959 {
9960 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9961 struct wireless_dev *wdev = info->user_ptr[1];
9962 int err;
9963
9964 if (!rdev->ops->start_p2p_device)
9965 return -EOPNOTSUPP;
9966
9967 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9968 return -EOPNOTSUPP;
9969
9970 if (wdev->p2p_started)
9971 return 0;
9972
9973 if (rfkill_blocked(rdev->rfkill))
9974 return -ERFKILL;
9975
9976 err = rdev_start_p2p_device(rdev, wdev);
9977 if (err)
9978 return err;
9979
9980 wdev->p2p_started = true;
9981 rdev->opencount++;
9982
9983 return 0;
9984 }
9985
9986 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9987 {
9988 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9989 struct wireless_dev *wdev = info->user_ptr[1];
9990
9991 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9992 return -EOPNOTSUPP;
9993
9994 if (!rdev->ops->stop_p2p_device)
9995 return -EOPNOTSUPP;
9996
9997 cfg80211_stop_p2p_device(rdev, wdev);
9998
9999 return 0;
10000 }
10001
10002 static int nl80211_get_protocol_features(struct sk_buff *skb,
10003 struct genl_info *info)
10004 {
10005 void *hdr;
10006 struct sk_buff *msg;
10007
10008 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10009 if (!msg)
10010 return -ENOMEM;
10011
10012 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10013 NL80211_CMD_GET_PROTOCOL_FEATURES);
10014 if (!hdr)
10015 goto nla_put_failure;
10016
10017 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
10018 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
10019 goto nla_put_failure;
10020
10021 genlmsg_end(msg, hdr);
10022 return genlmsg_reply(msg, info);
10023
10024 nla_put_failure:
10025 kfree_skb(msg);
10026 return -ENOBUFS;
10027 }
10028
10029 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
10030 {
10031 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10032 struct cfg80211_update_ft_ies_params ft_params;
10033 struct net_device *dev = info->user_ptr[1];
10034
10035 if (!rdev->ops->update_ft_ies)
10036 return -EOPNOTSUPP;
10037
10038 if (!info->attrs[NL80211_ATTR_MDID] ||
10039 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
10040 return -EINVAL;
10041
10042 memset(&ft_params, 0, sizeof(ft_params));
10043 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
10044 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10045 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10046
10047 return rdev_update_ft_ies(rdev, dev, &ft_params);
10048 }
10049
10050 static int nl80211_crit_protocol_start(struct sk_buff *skb,
10051 struct genl_info *info)
10052 {
10053 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10054 struct wireless_dev *wdev = info->user_ptr[1];
10055 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
10056 u16 duration;
10057 int ret;
10058
10059 if (!rdev->ops->crit_proto_start)
10060 return -EOPNOTSUPP;
10061
10062 if (WARN_ON(!rdev->ops->crit_proto_stop))
10063 return -EINVAL;
10064
10065 if (rdev->crit_proto_nlportid)
10066 return -EBUSY;
10067
10068 /* determine protocol if provided */
10069 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
10070 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
10071
10072 if (proto >= NUM_NL80211_CRIT_PROTO)
10073 return -EINVAL;
10074
10075 /* timeout must be provided */
10076 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
10077 return -EINVAL;
10078
10079 duration =
10080 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
10081
10082 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
10083 return -ERANGE;
10084
10085 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
10086 if (!ret)
10087 rdev->crit_proto_nlportid = info->snd_portid;
10088
10089 return ret;
10090 }
10091
10092 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
10093 struct genl_info *info)
10094 {
10095 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10096 struct wireless_dev *wdev = info->user_ptr[1];
10097
10098 if (!rdev->ops->crit_proto_stop)
10099 return -EOPNOTSUPP;
10100
10101 if (rdev->crit_proto_nlportid) {
10102 rdev->crit_proto_nlportid = 0;
10103 rdev_crit_proto_stop(rdev, wdev);
10104 }
10105 return 0;
10106 }
10107
10108 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
10109 {
10110 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10111 struct wireless_dev *wdev =
10112 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10113 int i, err;
10114 u32 vid, subcmd;
10115
10116 if (!rdev->wiphy.vendor_commands)
10117 return -EOPNOTSUPP;
10118
10119 if (IS_ERR(wdev)) {
10120 err = PTR_ERR(wdev);
10121 if (err != -EINVAL)
10122 return err;
10123 wdev = NULL;
10124 } else if (wdev->wiphy != &rdev->wiphy) {
10125 return -EINVAL;
10126 }
10127
10128 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
10129 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
10130 return -EINVAL;
10131
10132 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
10133 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
10134 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
10135 const struct wiphy_vendor_command *vcmd;
10136 void *data = NULL;
10137 int len = 0;
10138
10139 vcmd = &rdev->wiphy.vendor_commands[i];
10140
10141 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10142 continue;
10143
10144 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10145 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10146 if (!wdev)
10147 return -EINVAL;
10148 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10149 !wdev->netdev)
10150 return -EINVAL;
10151
10152 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10153 if (wdev->netdev &&
10154 !netif_running(wdev->netdev))
10155 return -ENETDOWN;
10156 if (!wdev->netdev && !wdev->p2p_started)
10157 return -ENETDOWN;
10158 }
10159
10160 if (!vcmd->doit)
10161 return -EOPNOTSUPP;
10162 } else {
10163 wdev = NULL;
10164 }
10165
10166 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
10167 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10168 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
10169 }
10170
10171 rdev->cur_cmd_info = info;
10172 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
10173 data, len);
10174 rdev->cur_cmd_info = NULL;
10175 return err;
10176 }
10177
10178 return -EOPNOTSUPP;
10179 }
10180
10181 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
10182 struct netlink_callback *cb,
10183 struct cfg80211_registered_device **rdev,
10184 struct wireless_dev **wdev)
10185 {
10186 u32 vid, subcmd;
10187 unsigned int i;
10188 int vcmd_idx = -1;
10189 int err;
10190 void *data = NULL;
10191 unsigned int data_len = 0;
10192
10193 rtnl_lock();
10194
10195 if (cb->args[0]) {
10196 /* subtract the 1 again here */
10197 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
10198 struct wireless_dev *tmp;
10199
10200 if (!wiphy) {
10201 err = -ENODEV;
10202 goto out_unlock;
10203 }
10204 *rdev = wiphy_to_rdev(wiphy);
10205 *wdev = NULL;
10206
10207 if (cb->args[1]) {
10208 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
10209 if (tmp->identifier == cb->args[1] - 1) {
10210 *wdev = tmp;
10211 break;
10212 }
10213 }
10214 }
10215
10216 /* keep rtnl locked in successful case */
10217 return 0;
10218 }
10219
10220 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
10221 nl80211_fam.attrbuf, nl80211_fam.maxattr,
10222 nl80211_policy);
10223 if (err)
10224 goto out_unlock;
10225
10226 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] ||
10227 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
10228 err = -EINVAL;
10229 goto out_unlock;
10230 }
10231
10232 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
10233 nl80211_fam.attrbuf);
10234 if (IS_ERR(*wdev))
10235 *wdev = NULL;
10236
10237 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
10238 nl80211_fam.attrbuf);
10239 if (IS_ERR(*rdev)) {
10240 err = PTR_ERR(*rdev);
10241 goto out_unlock;
10242 }
10243
10244 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]);
10245 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
10246
10247 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
10248 const struct wiphy_vendor_command *vcmd;
10249
10250 vcmd = &(*rdev)->wiphy.vendor_commands[i];
10251
10252 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
10253 continue;
10254
10255 if (!vcmd->dumpit) {
10256 err = -EOPNOTSUPP;
10257 goto out_unlock;
10258 }
10259
10260 vcmd_idx = i;
10261 break;
10262 }
10263
10264 if (vcmd_idx < 0) {
10265 err = -EOPNOTSUPP;
10266 goto out_unlock;
10267 }
10268
10269 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) {
10270 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10271 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]);
10272 }
10273
10274 /* 0 is the first index - add 1 to parse only once */
10275 cb->args[0] = (*rdev)->wiphy_idx + 1;
10276 /* add 1 to know if it was NULL */
10277 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
10278 cb->args[2] = vcmd_idx;
10279 cb->args[3] = (unsigned long)data;
10280 cb->args[4] = data_len;
10281
10282 /* keep rtnl locked in successful case */
10283 return 0;
10284 out_unlock:
10285 rtnl_unlock();
10286 return err;
10287 }
10288
10289 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
10290 struct netlink_callback *cb)
10291 {
10292 struct cfg80211_registered_device *rdev;
10293 struct wireless_dev *wdev;
10294 unsigned int vcmd_idx;
10295 const struct wiphy_vendor_command *vcmd;
10296 void *data;
10297 int data_len;
10298 int err;
10299 struct nlattr *vendor_data;
10300
10301 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
10302 if (err)
10303 return err;
10304
10305 vcmd_idx = cb->args[2];
10306 data = (void *)cb->args[3];
10307 data_len = cb->args[4];
10308 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
10309
10310 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
10311 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
10312 if (!wdev)
10313 return -EINVAL;
10314 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
10315 !wdev->netdev)
10316 return -EINVAL;
10317
10318 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
10319 if (wdev->netdev &&
10320 !netif_running(wdev->netdev))
10321 return -ENETDOWN;
10322 if (!wdev->netdev && !wdev->p2p_started)
10323 return -ENETDOWN;
10324 }
10325 }
10326
10327 while (1) {
10328 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10329 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10330 NL80211_CMD_VENDOR);
10331 if (!hdr)
10332 break;
10333
10334 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10335 (wdev && nla_put_u64(skb, NL80211_ATTR_WDEV,
10336 wdev_id(wdev)))) {
10337 genlmsg_cancel(skb, hdr);
10338 break;
10339 }
10340
10341 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA);
10342 if (!vendor_data) {
10343 genlmsg_cancel(skb, hdr);
10344 break;
10345 }
10346
10347 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
10348 (unsigned long *)&cb->args[5]);
10349 nla_nest_end(skb, vendor_data);
10350
10351 if (err == -ENOBUFS || err == -ENOENT) {
10352 genlmsg_cancel(skb, hdr);
10353 break;
10354 } else if (err) {
10355 genlmsg_cancel(skb, hdr);
10356 goto out;
10357 }
10358
10359 genlmsg_end(skb, hdr);
10360 }
10361
10362 err = skb->len;
10363 out:
10364 rtnl_unlock();
10365 return err;
10366 }
10367
10368 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
10369 enum nl80211_commands cmd,
10370 enum nl80211_attrs attr,
10371 int approxlen)
10372 {
10373 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10374
10375 if (WARN_ON(!rdev->cur_cmd_info))
10376 return NULL;
10377
10378 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
10379 rdev->cur_cmd_info->snd_portid,
10380 rdev->cur_cmd_info->snd_seq,
10381 cmd, attr, NULL, GFP_KERNEL);
10382 }
10383 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
10384
10385 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
10386 {
10387 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10388 void *hdr = ((void **)skb->cb)[1];
10389 struct nlattr *data = ((void **)skb->cb)[2];
10390
10391 /* clear CB data for netlink core to own from now on */
10392 memset(skb->cb, 0, sizeof(skb->cb));
10393
10394 if (WARN_ON(!rdev->cur_cmd_info)) {
10395 kfree_skb(skb);
10396 return -EINVAL;
10397 }
10398
10399 nla_nest_end(skb, data);
10400 genlmsg_end(skb, hdr);
10401 return genlmsg_reply(skb, rdev->cur_cmd_info);
10402 }
10403 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
10404
10405
10406 static int nl80211_set_qos_map(struct sk_buff *skb,
10407 struct genl_info *info)
10408 {
10409 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10410 struct cfg80211_qos_map *qos_map = NULL;
10411 struct net_device *dev = info->user_ptr[1];
10412 u8 *pos, len, num_des, des_len, des;
10413 int ret;
10414
10415 if (!rdev->ops->set_qos_map)
10416 return -EOPNOTSUPP;
10417
10418 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10419 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10420 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10421
10422 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10423 len > IEEE80211_QOS_MAP_LEN_MAX)
10424 return -EINVAL;
10425
10426 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10427 if (!qos_map)
10428 return -ENOMEM;
10429
10430 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10431 if (num_des) {
10432 des_len = num_des *
10433 sizeof(struct cfg80211_dscp_exception);
10434 memcpy(qos_map->dscp_exception, pos, des_len);
10435 qos_map->num_des = num_des;
10436 for (des = 0; des < num_des; des++) {
10437 if (qos_map->dscp_exception[des].up > 7) {
10438 kfree(qos_map);
10439 return -EINVAL;
10440 }
10441 }
10442 pos += des_len;
10443 }
10444 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10445 }
10446
10447 wdev_lock(dev->ieee80211_ptr);
10448 ret = nl80211_key_allowed(dev->ieee80211_ptr);
10449 if (!ret)
10450 ret = rdev_set_qos_map(rdev, dev, qos_map);
10451 wdev_unlock(dev->ieee80211_ptr);
10452
10453 kfree(qos_map);
10454 return ret;
10455 }
10456
10457 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10458 {
10459 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10460 struct net_device *dev = info->user_ptr[1];
10461 struct wireless_dev *wdev = dev->ieee80211_ptr;
10462 const u8 *peer;
10463 u8 tsid, up;
10464 u16 admitted_time = 0;
10465 int err;
10466
10467 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10468 return -EOPNOTSUPP;
10469
10470 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10471 !info->attrs[NL80211_ATTR_USER_PRIO])
10472 return -EINVAL;
10473
10474 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10475 if (tsid >= IEEE80211_NUM_TIDS)
10476 return -EINVAL;
10477
10478 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10479 if (up >= IEEE80211_NUM_UPS)
10480 return -EINVAL;
10481
10482 /* WMM uses TIDs 0-7 even for TSPEC */
10483 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10484 /* TODO: handle 802.11 TSPEC/admission control
10485 * need more attributes for that (e.g. BA session requirement);
10486 * change the WMM adminssion test above to allow both then
10487 */
10488 return -EINVAL;
10489 }
10490
10491 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10492
10493 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10494 admitted_time =
10495 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10496 if (!admitted_time)
10497 return -EINVAL;
10498 }
10499
10500 wdev_lock(wdev);
10501 switch (wdev->iftype) {
10502 case NL80211_IFTYPE_STATION:
10503 case NL80211_IFTYPE_P2P_CLIENT:
10504 if (wdev->current_bss)
10505 break;
10506 err = -ENOTCONN;
10507 goto out;
10508 default:
10509 err = -EOPNOTSUPP;
10510 goto out;
10511 }
10512
10513 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10514
10515 out:
10516 wdev_unlock(wdev);
10517 return err;
10518 }
10519
10520 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10521 {
10522 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10523 struct net_device *dev = info->user_ptr[1];
10524 struct wireless_dev *wdev = dev->ieee80211_ptr;
10525 const u8 *peer;
10526 u8 tsid;
10527 int err;
10528
10529 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10530 return -EINVAL;
10531
10532 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10533 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10534
10535 wdev_lock(wdev);
10536 err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10537 wdev_unlock(wdev);
10538
10539 return err;
10540 }
10541
10542 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10543 struct genl_info *info)
10544 {
10545 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10546 struct net_device *dev = info->user_ptr[1];
10547 struct wireless_dev *wdev = dev->ieee80211_ptr;
10548 struct cfg80211_chan_def chandef = {};
10549 const u8 *addr;
10550 u8 oper_class;
10551 int err;
10552
10553 if (!rdev->ops->tdls_channel_switch ||
10554 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10555 return -EOPNOTSUPP;
10556
10557 switch (dev->ieee80211_ptr->iftype) {
10558 case NL80211_IFTYPE_STATION:
10559 case NL80211_IFTYPE_P2P_CLIENT:
10560 break;
10561 default:
10562 return -EOPNOTSUPP;
10563 }
10564
10565 if (!info->attrs[NL80211_ATTR_MAC] ||
10566 !info->attrs[NL80211_ATTR_OPER_CLASS])
10567 return -EINVAL;
10568
10569 err = nl80211_parse_chandef(rdev, info, &chandef);
10570 if (err)
10571 return err;
10572
10573 /*
10574 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10575 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10576 * specification is not defined for them.
10577 */
10578 if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10579 chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10580 chandef.width != NL80211_CHAN_WIDTH_20)
10581 return -EINVAL;
10582
10583 /* we will be active on the TDLS link */
10584 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
10585 wdev->iftype))
10586 return -EINVAL;
10587
10588 /* don't allow switching to DFS channels */
10589 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10590 return -EINVAL;
10591
10592 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10593 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10594
10595 wdev_lock(wdev);
10596 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10597 wdev_unlock(wdev);
10598
10599 return err;
10600 }
10601
10602 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10603 struct genl_info *info)
10604 {
10605 struct cfg80211_registered_device *rdev = info->user_ptr[0];
10606 struct net_device *dev = info->user_ptr[1];
10607 struct wireless_dev *wdev = dev->ieee80211_ptr;
10608 const u8 *addr;
10609
10610 if (!rdev->ops->tdls_channel_switch ||
10611 !rdev->ops->tdls_cancel_channel_switch ||
10612 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10613 return -EOPNOTSUPP;
10614
10615 switch (dev->ieee80211_ptr->iftype) {
10616 case NL80211_IFTYPE_STATION:
10617 case NL80211_IFTYPE_P2P_CLIENT:
10618 break;
10619 default:
10620 return -EOPNOTSUPP;
10621 }
10622
10623 if (!info->attrs[NL80211_ATTR_MAC])
10624 return -EINVAL;
10625
10626 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10627
10628 wdev_lock(wdev);
10629 rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10630 wdev_unlock(wdev);
10631
10632 return 0;
10633 }
10634
10635 #define NL80211_FLAG_NEED_WIPHY 0x01
10636 #define NL80211_FLAG_NEED_NETDEV 0x02
10637 #define NL80211_FLAG_NEED_RTNL 0x04
10638 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
10639 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
10640 NL80211_FLAG_CHECK_NETDEV_UP)
10641 #define NL80211_FLAG_NEED_WDEV 0x10
10642 /* If a netdev is associated, it must be UP, P2P must be started */
10643 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
10644 NL80211_FLAG_CHECK_NETDEV_UP)
10645 #define NL80211_FLAG_CLEAR_SKB 0x20
10646
10647 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10648 struct genl_info *info)
10649 {
10650 struct cfg80211_registered_device *rdev;
10651 struct wireless_dev *wdev;
10652 struct net_device *dev;
10653 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10654
10655 if (rtnl)
10656 rtnl_lock();
10657
10658 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10659 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10660 if (IS_ERR(rdev)) {
10661 if (rtnl)
10662 rtnl_unlock();
10663 return PTR_ERR(rdev);
10664 }
10665 info->user_ptr[0] = rdev;
10666 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10667 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10668 ASSERT_RTNL();
10669
10670 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10671 info->attrs);
10672 if (IS_ERR(wdev)) {
10673 if (rtnl)
10674 rtnl_unlock();
10675 return PTR_ERR(wdev);
10676 }
10677
10678 dev = wdev->netdev;
10679 rdev = wiphy_to_rdev(wdev->wiphy);
10680
10681 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10682 if (!dev) {
10683 if (rtnl)
10684 rtnl_unlock();
10685 return -EINVAL;
10686 }
10687
10688 info->user_ptr[1] = dev;
10689 } else {
10690 info->user_ptr[1] = wdev;
10691 }
10692
10693 if (dev) {
10694 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10695 !netif_running(dev)) {
10696 if (rtnl)
10697 rtnl_unlock();
10698 return -ENETDOWN;
10699 }
10700
10701 dev_hold(dev);
10702 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10703 if (!wdev->p2p_started) {
10704 if (rtnl)
10705 rtnl_unlock();
10706 return -ENETDOWN;
10707 }
10708 }
10709
10710 info->user_ptr[0] = rdev;
10711 }
10712
10713 return 0;
10714 }
10715
10716 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10717 struct genl_info *info)
10718 {
10719 if (info->user_ptr[1]) {
10720 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10721 struct wireless_dev *wdev = info->user_ptr[1];
10722
10723 if (wdev->netdev)
10724 dev_put(wdev->netdev);
10725 } else {
10726 dev_put(info->user_ptr[1]);
10727 }
10728 }
10729
10730 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10731 rtnl_unlock();
10732
10733 /* If needed, clear the netlink message payload from the SKB
10734 * as it might contain key data that shouldn't stick around on
10735 * the heap after the SKB is freed. The netlink message header
10736 * is still needed for further processing, so leave it intact.
10737 */
10738 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10739 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10740
10741 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10742 }
10743 }
10744
10745 static const struct genl_ops nl80211_ops[] = {
10746 {
10747 .cmd = NL80211_CMD_GET_WIPHY,
10748 .doit = nl80211_get_wiphy,
10749 .dumpit = nl80211_dump_wiphy,
10750 .done = nl80211_dump_wiphy_done,
10751 .policy = nl80211_policy,
10752 /* can be retrieved by unprivileged users */
10753 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10754 NL80211_FLAG_NEED_RTNL,
10755 },
10756 {
10757 .cmd = NL80211_CMD_SET_WIPHY,
10758 .doit = nl80211_set_wiphy,
10759 .policy = nl80211_policy,
10760 .flags = GENL_ADMIN_PERM,
10761 .internal_flags = NL80211_FLAG_NEED_RTNL,
10762 },
10763 {
10764 .cmd = NL80211_CMD_GET_INTERFACE,
10765 .doit = nl80211_get_interface,
10766 .dumpit = nl80211_dump_interface,
10767 .policy = nl80211_policy,
10768 /* can be retrieved by unprivileged users */
10769 .internal_flags = NL80211_FLAG_NEED_WDEV |
10770 NL80211_FLAG_NEED_RTNL,
10771 },
10772 {
10773 .cmd = NL80211_CMD_SET_INTERFACE,
10774 .doit = nl80211_set_interface,
10775 .policy = nl80211_policy,
10776 .flags = GENL_ADMIN_PERM,
10777 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10778 NL80211_FLAG_NEED_RTNL,
10779 },
10780 {
10781 .cmd = NL80211_CMD_NEW_INTERFACE,
10782 .doit = nl80211_new_interface,
10783 .policy = nl80211_policy,
10784 .flags = GENL_ADMIN_PERM,
10785 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10786 NL80211_FLAG_NEED_RTNL,
10787 },
10788 {
10789 .cmd = NL80211_CMD_DEL_INTERFACE,
10790 .doit = nl80211_del_interface,
10791 .policy = nl80211_policy,
10792 .flags = GENL_ADMIN_PERM,
10793 .internal_flags = NL80211_FLAG_NEED_WDEV |
10794 NL80211_FLAG_NEED_RTNL,
10795 },
10796 {
10797 .cmd = NL80211_CMD_GET_KEY,
10798 .doit = nl80211_get_key,
10799 .policy = nl80211_policy,
10800 .flags = GENL_ADMIN_PERM,
10801 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10802 NL80211_FLAG_NEED_RTNL,
10803 },
10804 {
10805 .cmd = NL80211_CMD_SET_KEY,
10806 .doit = nl80211_set_key,
10807 .policy = nl80211_policy,
10808 .flags = GENL_ADMIN_PERM,
10809 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10810 NL80211_FLAG_NEED_RTNL |
10811 NL80211_FLAG_CLEAR_SKB,
10812 },
10813 {
10814 .cmd = NL80211_CMD_NEW_KEY,
10815 .doit = nl80211_new_key,
10816 .policy = nl80211_policy,
10817 .flags = GENL_ADMIN_PERM,
10818 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10819 NL80211_FLAG_NEED_RTNL |
10820 NL80211_FLAG_CLEAR_SKB,
10821 },
10822 {
10823 .cmd = NL80211_CMD_DEL_KEY,
10824 .doit = nl80211_del_key,
10825 .policy = nl80211_policy,
10826 .flags = GENL_ADMIN_PERM,
10827 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10828 NL80211_FLAG_NEED_RTNL,
10829 },
10830 {
10831 .cmd = NL80211_CMD_SET_BEACON,
10832 .policy = nl80211_policy,
10833 .flags = GENL_ADMIN_PERM,
10834 .doit = nl80211_set_beacon,
10835 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10836 NL80211_FLAG_NEED_RTNL,
10837 },
10838 {
10839 .cmd = NL80211_CMD_START_AP,
10840 .policy = nl80211_policy,
10841 .flags = GENL_ADMIN_PERM,
10842 .doit = nl80211_start_ap,
10843 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10844 NL80211_FLAG_NEED_RTNL,
10845 },
10846 {
10847 .cmd = NL80211_CMD_STOP_AP,
10848 .policy = nl80211_policy,
10849 .flags = GENL_ADMIN_PERM,
10850 .doit = nl80211_stop_ap,
10851 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10852 NL80211_FLAG_NEED_RTNL,
10853 },
10854 {
10855 .cmd = NL80211_CMD_GET_STATION,
10856 .doit = nl80211_get_station,
10857 .dumpit = nl80211_dump_station,
10858 .policy = nl80211_policy,
10859 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10860 NL80211_FLAG_NEED_RTNL,
10861 },
10862 {
10863 .cmd = NL80211_CMD_SET_STATION,
10864 .doit = nl80211_set_station,
10865 .policy = nl80211_policy,
10866 .flags = GENL_ADMIN_PERM,
10867 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10868 NL80211_FLAG_NEED_RTNL,
10869 },
10870 {
10871 .cmd = NL80211_CMD_NEW_STATION,
10872 .doit = nl80211_new_station,
10873 .policy = nl80211_policy,
10874 .flags = GENL_ADMIN_PERM,
10875 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10876 NL80211_FLAG_NEED_RTNL,
10877 },
10878 {
10879 .cmd = NL80211_CMD_DEL_STATION,
10880 .doit = nl80211_del_station,
10881 .policy = nl80211_policy,
10882 .flags = GENL_ADMIN_PERM,
10883 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10884 NL80211_FLAG_NEED_RTNL,
10885 },
10886 {
10887 .cmd = NL80211_CMD_GET_MPATH,
10888 .doit = nl80211_get_mpath,
10889 .dumpit = nl80211_dump_mpath,
10890 .policy = nl80211_policy,
10891 .flags = GENL_ADMIN_PERM,
10892 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10893 NL80211_FLAG_NEED_RTNL,
10894 },
10895 {
10896 .cmd = NL80211_CMD_GET_MPP,
10897 .doit = nl80211_get_mpp,
10898 .dumpit = nl80211_dump_mpp,
10899 .policy = nl80211_policy,
10900 .flags = GENL_ADMIN_PERM,
10901 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10902 NL80211_FLAG_NEED_RTNL,
10903 },
10904 {
10905 .cmd = NL80211_CMD_SET_MPATH,
10906 .doit = nl80211_set_mpath,
10907 .policy = nl80211_policy,
10908 .flags = GENL_ADMIN_PERM,
10909 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10910 NL80211_FLAG_NEED_RTNL,
10911 },
10912 {
10913 .cmd = NL80211_CMD_NEW_MPATH,
10914 .doit = nl80211_new_mpath,
10915 .policy = nl80211_policy,
10916 .flags = GENL_ADMIN_PERM,
10917 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10918 NL80211_FLAG_NEED_RTNL,
10919 },
10920 {
10921 .cmd = NL80211_CMD_DEL_MPATH,
10922 .doit = nl80211_del_mpath,
10923 .policy = nl80211_policy,
10924 .flags = GENL_ADMIN_PERM,
10925 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10926 NL80211_FLAG_NEED_RTNL,
10927 },
10928 {
10929 .cmd = NL80211_CMD_SET_BSS,
10930 .doit = nl80211_set_bss,
10931 .policy = nl80211_policy,
10932 .flags = GENL_ADMIN_PERM,
10933 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10934 NL80211_FLAG_NEED_RTNL,
10935 },
10936 {
10937 .cmd = NL80211_CMD_GET_REG,
10938 .doit = nl80211_get_reg_do,
10939 .dumpit = nl80211_get_reg_dump,
10940 .policy = nl80211_policy,
10941 .internal_flags = NL80211_FLAG_NEED_RTNL,
10942 /* can be retrieved by unprivileged users */
10943 },
10944 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
10945 {
10946 .cmd = NL80211_CMD_SET_REG,
10947 .doit = nl80211_set_reg,
10948 .policy = nl80211_policy,
10949 .flags = GENL_ADMIN_PERM,
10950 .internal_flags = NL80211_FLAG_NEED_RTNL,
10951 },
10952 #endif
10953 {
10954 .cmd = NL80211_CMD_REQ_SET_REG,
10955 .doit = nl80211_req_set_reg,
10956 .policy = nl80211_policy,
10957 .flags = GENL_ADMIN_PERM,
10958 },
10959 {
10960 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10961 .doit = nl80211_get_mesh_config,
10962 .policy = nl80211_policy,
10963 /* can be retrieved by unprivileged users */
10964 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10965 NL80211_FLAG_NEED_RTNL,
10966 },
10967 {
10968 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10969 .doit = nl80211_update_mesh_config,
10970 .policy = nl80211_policy,
10971 .flags = GENL_ADMIN_PERM,
10972 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10973 NL80211_FLAG_NEED_RTNL,
10974 },
10975 {
10976 .cmd = NL80211_CMD_TRIGGER_SCAN,
10977 .doit = nl80211_trigger_scan,
10978 .policy = nl80211_policy,
10979 .flags = GENL_ADMIN_PERM,
10980 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10981 NL80211_FLAG_NEED_RTNL,
10982 },
10983 {
10984 .cmd = NL80211_CMD_ABORT_SCAN,
10985 .doit = nl80211_abort_scan,
10986 .policy = nl80211_policy,
10987 .flags = GENL_ADMIN_PERM,
10988 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10989 NL80211_FLAG_NEED_RTNL,
10990 },
10991 {
10992 .cmd = NL80211_CMD_GET_SCAN,
10993 .policy = nl80211_policy,
10994 .dumpit = nl80211_dump_scan,
10995 },
10996 {
10997 .cmd = NL80211_CMD_START_SCHED_SCAN,
10998 .doit = nl80211_start_sched_scan,
10999 .policy = nl80211_policy,
11000 .flags = GENL_ADMIN_PERM,
11001 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11002 NL80211_FLAG_NEED_RTNL,
11003 },
11004 {
11005 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
11006 .doit = nl80211_stop_sched_scan,
11007 .policy = nl80211_policy,
11008 .flags = GENL_ADMIN_PERM,
11009 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11010 NL80211_FLAG_NEED_RTNL,
11011 },
11012 {
11013 .cmd = NL80211_CMD_AUTHENTICATE,
11014 .doit = nl80211_authenticate,
11015 .policy = nl80211_policy,
11016 .flags = GENL_ADMIN_PERM,
11017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11018 NL80211_FLAG_NEED_RTNL |
11019 NL80211_FLAG_CLEAR_SKB,
11020 },
11021 {
11022 .cmd = NL80211_CMD_ASSOCIATE,
11023 .doit = nl80211_associate,
11024 .policy = nl80211_policy,
11025 .flags = GENL_ADMIN_PERM,
11026 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11027 NL80211_FLAG_NEED_RTNL,
11028 },
11029 {
11030 .cmd = NL80211_CMD_DEAUTHENTICATE,
11031 .doit = nl80211_deauthenticate,
11032 .policy = nl80211_policy,
11033 .flags = GENL_ADMIN_PERM,
11034 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11035 NL80211_FLAG_NEED_RTNL,
11036 },
11037 {
11038 .cmd = NL80211_CMD_DISASSOCIATE,
11039 .doit = nl80211_disassociate,
11040 .policy = nl80211_policy,
11041 .flags = GENL_ADMIN_PERM,
11042 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11043 NL80211_FLAG_NEED_RTNL,
11044 },
11045 {
11046 .cmd = NL80211_CMD_JOIN_IBSS,
11047 .doit = nl80211_join_ibss,
11048 .policy = nl80211_policy,
11049 .flags = GENL_ADMIN_PERM,
11050 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11051 NL80211_FLAG_NEED_RTNL,
11052 },
11053 {
11054 .cmd = NL80211_CMD_LEAVE_IBSS,
11055 .doit = nl80211_leave_ibss,
11056 .policy = nl80211_policy,
11057 .flags = GENL_ADMIN_PERM,
11058 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11059 NL80211_FLAG_NEED_RTNL,
11060 },
11061 #ifdef CONFIG_NL80211_TESTMODE
11062 {
11063 .cmd = NL80211_CMD_TESTMODE,
11064 .doit = nl80211_testmode_do,
11065 .dumpit = nl80211_testmode_dump,
11066 .policy = nl80211_policy,
11067 .flags = GENL_ADMIN_PERM,
11068 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11069 NL80211_FLAG_NEED_RTNL,
11070 },
11071 #endif
11072 {
11073 .cmd = NL80211_CMD_CONNECT,
11074 .doit = nl80211_connect,
11075 .policy = nl80211_policy,
11076 .flags = GENL_ADMIN_PERM,
11077 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11078 NL80211_FLAG_NEED_RTNL,
11079 },
11080 {
11081 .cmd = NL80211_CMD_DISCONNECT,
11082 .doit = nl80211_disconnect,
11083 .policy = nl80211_policy,
11084 .flags = GENL_ADMIN_PERM,
11085 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11086 NL80211_FLAG_NEED_RTNL,
11087 },
11088 {
11089 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
11090 .doit = nl80211_wiphy_netns,
11091 .policy = nl80211_policy,
11092 .flags = GENL_ADMIN_PERM,
11093 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11094 NL80211_FLAG_NEED_RTNL,
11095 },
11096 {
11097 .cmd = NL80211_CMD_GET_SURVEY,
11098 .policy = nl80211_policy,
11099 .dumpit = nl80211_dump_survey,
11100 },
11101 {
11102 .cmd = NL80211_CMD_SET_PMKSA,
11103 .doit = nl80211_setdel_pmksa,
11104 .policy = nl80211_policy,
11105 .flags = GENL_ADMIN_PERM,
11106 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11107 NL80211_FLAG_NEED_RTNL,
11108 },
11109 {
11110 .cmd = NL80211_CMD_DEL_PMKSA,
11111 .doit = nl80211_setdel_pmksa,
11112 .policy = nl80211_policy,
11113 .flags = GENL_ADMIN_PERM,
11114 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11115 NL80211_FLAG_NEED_RTNL,
11116 },
11117 {
11118 .cmd = NL80211_CMD_FLUSH_PMKSA,
11119 .doit = nl80211_flush_pmksa,
11120 .policy = nl80211_policy,
11121 .flags = GENL_ADMIN_PERM,
11122 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11123 NL80211_FLAG_NEED_RTNL,
11124 },
11125 {
11126 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
11127 .doit = nl80211_remain_on_channel,
11128 .policy = nl80211_policy,
11129 .flags = GENL_ADMIN_PERM,
11130 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11131 NL80211_FLAG_NEED_RTNL,
11132 },
11133 {
11134 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11135 .doit = nl80211_cancel_remain_on_channel,
11136 .policy = nl80211_policy,
11137 .flags = GENL_ADMIN_PERM,
11138 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11139 NL80211_FLAG_NEED_RTNL,
11140 },
11141 {
11142 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
11143 .doit = nl80211_set_tx_bitrate_mask,
11144 .policy = nl80211_policy,
11145 .flags = GENL_ADMIN_PERM,
11146 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11147 NL80211_FLAG_NEED_RTNL,
11148 },
11149 {
11150 .cmd = NL80211_CMD_REGISTER_FRAME,
11151 .doit = nl80211_register_mgmt,
11152 .policy = nl80211_policy,
11153 .flags = GENL_ADMIN_PERM,
11154 .internal_flags = NL80211_FLAG_NEED_WDEV |
11155 NL80211_FLAG_NEED_RTNL,
11156 },
11157 {
11158 .cmd = NL80211_CMD_FRAME,
11159 .doit = nl80211_tx_mgmt,
11160 .policy = nl80211_policy,
11161 .flags = GENL_ADMIN_PERM,
11162 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11163 NL80211_FLAG_NEED_RTNL,
11164 },
11165 {
11166 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
11167 .doit = nl80211_tx_mgmt_cancel_wait,
11168 .policy = nl80211_policy,
11169 .flags = GENL_ADMIN_PERM,
11170 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11171 NL80211_FLAG_NEED_RTNL,
11172 },
11173 {
11174 .cmd = NL80211_CMD_SET_POWER_SAVE,
11175 .doit = nl80211_set_power_save,
11176 .policy = nl80211_policy,
11177 .flags = GENL_ADMIN_PERM,
11178 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11179 NL80211_FLAG_NEED_RTNL,
11180 },
11181 {
11182 .cmd = NL80211_CMD_GET_POWER_SAVE,
11183 .doit = nl80211_get_power_save,
11184 .policy = nl80211_policy,
11185 /* can be retrieved by unprivileged users */
11186 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11187 NL80211_FLAG_NEED_RTNL,
11188 },
11189 {
11190 .cmd = NL80211_CMD_SET_CQM,
11191 .doit = nl80211_set_cqm,
11192 .policy = nl80211_policy,
11193 .flags = GENL_ADMIN_PERM,
11194 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11195 NL80211_FLAG_NEED_RTNL,
11196 },
11197 {
11198 .cmd = NL80211_CMD_SET_CHANNEL,
11199 .doit = nl80211_set_channel,
11200 .policy = nl80211_policy,
11201 .flags = GENL_ADMIN_PERM,
11202 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11203 NL80211_FLAG_NEED_RTNL,
11204 },
11205 {
11206 .cmd = NL80211_CMD_SET_WDS_PEER,
11207 .doit = nl80211_set_wds_peer,
11208 .policy = nl80211_policy,
11209 .flags = GENL_ADMIN_PERM,
11210 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11211 NL80211_FLAG_NEED_RTNL,
11212 },
11213 {
11214 .cmd = NL80211_CMD_JOIN_MESH,
11215 .doit = nl80211_join_mesh,
11216 .policy = nl80211_policy,
11217 .flags = GENL_ADMIN_PERM,
11218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11219 NL80211_FLAG_NEED_RTNL,
11220 },
11221 {
11222 .cmd = NL80211_CMD_LEAVE_MESH,
11223 .doit = nl80211_leave_mesh,
11224 .policy = nl80211_policy,
11225 .flags = GENL_ADMIN_PERM,
11226 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11227 NL80211_FLAG_NEED_RTNL,
11228 },
11229 {
11230 .cmd = NL80211_CMD_JOIN_OCB,
11231 .doit = nl80211_join_ocb,
11232 .policy = nl80211_policy,
11233 .flags = GENL_ADMIN_PERM,
11234 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11235 NL80211_FLAG_NEED_RTNL,
11236 },
11237 {
11238 .cmd = NL80211_CMD_LEAVE_OCB,
11239 .doit = nl80211_leave_ocb,
11240 .policy = nl80211_policy,
11241 .flags = GENL_ADMIN_PERM,
11242 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11243 NL80211_FLAG_NEED_RTNL,
11244 },
11245 #ifdef CONFIG_PM
11246 {
11247 .cmd = NL80211_CMD_GET_WOWLAN,
11248 .doit = nl80211_get_wowlan,
11249 .policy = nl80211_policy,
11250 /* can be retrieved by unprivileged users */
11251 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11252 NL80211_FLAG_NEED_RTNL,
11253 },
11254 {
11255 .cmd = NL80211_CMD_SET_WOWLAN,
11256 .doit = nl80211_set_wowlan,
11257 .policy = nl80211_policy,
11258 .flags = GENL_ADMIN_PERM,
11259 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11260 NL80211_FLAG_NEED_RTNL,
11261 },
11262 #endif
11263 {
11264 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
11265 .doit = nl80211_set_rekey_data,
11266 .policy = nl80211_policy,
11267 .flags = GENL_ADMIN_PERM,
11268 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11269 NL80211_FLAG_NEED_RTNL |
11270 NL80211_FLAG_CLEAR_SKB,
11271 },
11272 {
11273 .cmd = NL80211_CMD_TDLS_MGMT,
11274 .doit = nl80211_tdls_mgmt,
11275 .policy = nl80211_policy,
11276 .flags = GENL_ADMIN_PERM,
11277 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11278 NL80211_FLAG_NEED_RTNL,
11279 },
11280 {
11281 .cmd = NL80211_CMD_TDLS_OPER,
11282 .doit = nl80211_tdls_oper,
11283 .policy = nl80211_policy,
11284 .flags = GENL_ADMIN_PERM,
11285 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11286 NL80211_FLAG_NEED_RTNL,
11287 },
11288 {
11289 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
11290 .doit = nl80211_register_unexpected_frame,
11291 .policy = nl80211_policy,
11292 .flags = GENL_ADMIN_PERM,
11293 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11294 NL80211_FLAG_NEED_RTNL,
11295 },
11296 {
11297 .cmd = NL80211_CMD_PROBE_CLIENT,
11298 .doit = nl80211_probe_client,
11299 .policy = nl80211_policy,
11300 .flags = GENL_ADMIN_PERM,
11301 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11302 NL80211_FLAG_NEED_RTNL,
11303 },
11304 {
11305 .cmd = NL80211_CMD_REGISTER_BEACONS,
11306 .doit = nl80211_register_beacons,
11307 .policy = nl80211_policy,
11308 .flags = GENL_ADMIN_PERM,
11309 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11310 NL80211_FLAG_NEED_RTNL,
11311 },
11312 {
11313 .cmd = NL80211_CMD_SET_NOACK_MAP,
11314 .doit = nl80211_set_noack_map,
11315 .policy = nl80211_policy,
11316 .flags = GENL_ADMIN_PERM,
11317 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11318 NL80211_FLAG_NEED_RTNL,
11319 },
11320 {
11321 .cmd = NL80211_CMD_START_P2P_DEVICE,
11322 .doit = nl80211_start_p2p_device,
11323 .policy = nl80211_policy,
11324 .flags = GENL_ADMIN_PERM,
11325 .internal_flags = NL80211_FLAG_NEED_WDEV |
11326 NL80211_FLAG_NEED_RTNL,
11327 },
11328 {
11329 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
11330 .doit = nl80211_stop_p2p_device,
11331 .policy = nl80211_policy,
11332 .flags = GENL_ADMIN_PERM,
11333 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11334 NL80211_FLAG_NEED_RTNL,
11335 },
11336 {
11337 .cmd = NL80211_CMD_SET_MCAST_RATE,
11338 .doit = nl80211_set_mcast_rate,
11339 .policy = nl80211_policy,
11340 .flags = GENL_ADMIN_PERM,
11341 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11342 NL80211_FLAG_NEED_RTNL,
11343 },
11344 {
11345 .cmd = NL80211_CMD_SET_MAC_ACL,
11346 .doit = nl80211_set_mac_acl,
11347 .policy = nl80211_policy,
11348 .flags = GENL_ADMIN_PERM,
11349 .internal_flags = NL80211_FLAG_NEED_NETDEV |
11350 NL80211_FLAG_NEED_RTNL,
11351 },
11352 {
11353 .cmd = NL80211_CMD_RADAR_DETECT,
11354 .doit = nl80211_start_radar_detection,
11355 .policy = nl80211_policy,
11356 .flags = GENL_ADMIN_PERM,
11357 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11358 NL80211_FLAG_NEED_RTNL,
11359 },
11360 {
11361 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
11362 .doit = nl80211_get_protocol_features,
11363 .policy = nl80211_policy,
11364 },
11365 {
11366 .cmd = NL80211_CMD_UPDATE_FT_IES,
11367 .doit = nl80211_update_ft_ies,
11368 .policy = nl80211_policy,
11369 .flags = GENL_ADMIN_PERM,
11370 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11371 NL80211_FLAG_NEED_RTNL,
11372 },
11373 {
11374 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
11375 .doit = nl80211_crit_protocol_start,
11376 .policy = nl80211_policy,
11377 .flags = GENL_ADMIN_PERM,
11378 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11379 NL80211_FLAG_NEED_RTNL,
11380 },
11381 {
11382 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
11383 .doit = nl80211_crit_protocol_stop,
11384 .policy = nl80211_policy,
11385 .flags = GENL_ADMIN_PERM,
11386 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
11387 NL80211_FLAG_NEED_RTNL,
11388 },
11389 {
11390 .cmd = NL80211_CMD_GET_COALESCE,
11391 .doit = nl80211_get_coalesce,
11392 .policy = nl80211_policy,
11393 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11394 NL80211_FLAG_NEED_RTNL,
11395 },
11396 {
11397 .cmd = NL80211_CMD_SET_COALESCE,
11398 .doit = nl80211_set_coalesce,
11399 .policy = nl80211_policy,
11400 .flags = GENL_ADMIN_PERM,
11401 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11402 NL80211_FLAG_NEED_RTNL,
11403 },
11404 {
11405 .cmd = NL80211_CMD_CHANNEL_SWITCH,
11406 .doit = nl80211_channel_switch,
11407 .policy = nl80211_policy,
11408 .flags = GENL_ADMIN_PERM,
11409 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11410 NL80211_FLAG_NEED_RTNL,
11411 },
11412 {
11413 .cmd = NL80211_CMD_VENDOR,
11414 .doit = nl80211_vendor_cmd,
11415 .dumpit = nl80211_vendor_cmd_dump,
11416 .policy = nl80211_policy,
11417 .flags = GENL_ADMIN_PERM,
11418 .internal_flags = NL80211_FLAG_NEED_WIPHY |
11419 NL80211_FLAG_NEED_RTNL,
11420 },
11421 {
11422 .cmd = NL80211_CMD_SET_QOS_MAP,
11423 .doit = nl80211_set_qos_map,
11424 .policy = nl80211_policy,
11425 .flags = GENL_ADMIN_PERM,
11426 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11427 NL80211_FLAG_NEED_RTNL,
11428 },
11429 {
11430 .cmd = NL80211_CMD_ADD_TX_TS,
11431 .doit = nl80211_add_tx_ts,
11432 .policy = nl80211_policy,
11433 .flags = GENL_ADMIN_PERM,
11434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11435 NL80211_FLAG_NEED_RTNL,
11436 },
11437 {
11438 .cmd = NL80211_CMD_DEL_TX_TS,
11439 .doit = nl80211_del_tx_ts,
11440 .policy = nl80211_policy,
11441 .flags = GENL_ADMIN_PERM,
11442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11443 NL80211_FLAG_NEED_RTNL,
11444 },
11445 {
11446 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11447 .doit = nl80211_tdls_channel_switch,
11448 .policy = nl80211_policy,
11449 .flags = GENL_ADMIN_PERM,
11450 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11451 NL80211_FLAG_NEED_RTNL,
11452 },
11453 {
11454 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11455 .doit = nl80211_tdls_cancel_channel_switch,
11456 .policy = nl80211_policy,
11457 .flags = GENL_ADMIN_PERM,
11458 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11459 NL80211_FLAG_NEED_RTNL,
11460 },
11461 };
11462
11463 /* notification functions */
11464
11465 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11466 enum nl80211_commands cmd)
11467 {
11468 struct sk_buff *msg;
11469 struct nl80211_dump_wiphy_state state = {};
11470
11471 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11472 cmd != NL80211_CMD_DEL_WIPHY);
11473
11474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11475 if (!msg)
11476 return;
11477
11478 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11479 nlmsg_free(msg);
11480 return;
11481 }
11482
11483 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11484 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11485 }
11486
11487 static int nl80211_add_scan_req(struct sk_buff *msg,
11488 struct cfg80211_registered_device *rdev)
11489 {
11490 struct cfg80211_scan_request *req = rdev->scan_req;
11491 struct nlattr *nest;
11492 int i;
11493
11494 if (WARN_ON(!req))
11495 return 0;
11496
11497 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11498 if (!nest)
11499 goto nla_put_failure;
11500 for (i = 0; i < req->n_ssids; i++) {
11501 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11502 goto nla_put_failure;
11503 }
11504 nla_nest_end(msg, nest);
11505
11506 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11507 if (!nest)
11508 goto nla_put_failure;
11509 for (i = 0; i < req->n_channels; i++) {
11510 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11511 goto nla_put_failure;
11512 }
11513 nla_nest_end(msg, nest);
11514
11515 if (req->ie &&
11516 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11517 goto nla_put_failure;
11518
11519 if (req->flags &&
11520 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11521 goto nla_put_failure;
11522
11523 return 0;
11524 nla_put_failure:
11525 return -ENOBUFS;
11526 }
11527
11528 static int nl80211_send_scan_msg(struct sk_buff *msg,
11529 struct cfg80211_registered_device *rdev,
11530 struct wireless_dev *wdev,
11531 u32 portid, u32 seq, int flags,
11532 u32 cmd)
11533 {
11534 void *hdr;
11535
11536 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11537 if (!hdr)
11538 return -1;
11539
11540 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11541 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11542 wdev->netdev->ifindex)) ||
11543 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11544 goto nla_put_failure;
11545
11546 /* ignore errors and send incomplete event anyway */
11547 nl80211_add_scan_req(msg, rdev);
11548
11549 genlmsg_end(msg, hdr);
11550 return 0;
11551
11552 nla_put_failure:
11553 genlmsg_cancel(msg, hdr);
11554 return -EMSGSIZE;
11555 }
11556
11557 static int
11558 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11559 struct cfg80211_registered_device *rdev,
11560 struct net_device *netdev,
11561 u32 portid, u32 seq, int flags, u32 cmd)
11562 {
11563 void *hdr;
11564
11565 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11566 if (!hdr)
11567 return -1;
11568
11569 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11570 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11571 goto nla_put_failure;
11572
11573 genlmsg_end(msg, hdr);
11574 return 0;
11575
11576 nla_put_failure:
11577 genlmsg_cancel(msg, hdr);
11578 return -EMSGSIZE;
11579 }
11580
11581 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11582 struct wireless_dev *wdev)
11583 {
11584 struct sk_buff *msg;
11585
11586 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11587 if (!msg)
11588 return;
11589
11590 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11591 NL80211_CMD_TRIGGER_SCAN) < 0) {
11592 nlmsg_free(msg);
11593 return;
11594 }
11595
11596 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11597 NL80211_MCGRP_SCAN, GFP_KERNEL);
11598 }
11599
11600 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11601 struct wireless_dev *wdev, bool aborted)
11602 {
11603 struct sk_buff *msg;
11604
11605 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11606 if (!msg)
11607 return NULL;
11608
11609 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11610 aborted ? NL80211_CMD_SCAN_ABORTED :
11611 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11612 nlmsg_free(msg);
11613 return NULL;
11614 }
11615
11616 return msg;
11617 }
11618
11619 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11620 struct sk_buff *msg)
11621 {
11622 if (!msg)
11623 return;
11624
11625 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11626 NL80211_MCGRP_SCAN, GFP_KERNEL);
11627 }
11628
11629 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11630 struct net_device *netdev)
11631 {
11632 struct sk_buff *msg;
11633
11634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11635 if (!msg)
11636 return;
11637
11638 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11639 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11640 nlmsg_free(msg);
11641 return;
11642 }
11643
11644 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11645 NL80211_MCGRP_SCAN, GFP_KERNEL);
11646 }
11647
11648 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11649 struct net_device *netdev, u32 cmd)
11650 {
11651 struct sk_buff *msg;
11652
11653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11654 if (!msg)
11655 return;
11656
11657 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11658 nlmsg_free(msg);
11659 return;
11660 }
11661
11662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11663 NL80211_MCGRP_SCAN, GFP_KERNEL);
11664 }
11665
11666 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11667 struct regulatory_request *request)
11668 {
11669 /* Userspace can always count this one always being set */
11670 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11671 goto nla_put_failure;
11672
11673 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11674 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11675 NL80211_REGDOM_TYPE_WORLD))
11676 goto nla_put_failure;
11677 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11678 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11679 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11680 goto nla_put_failure;
11681 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11682 request->intersect) {
11683 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11684 NL80211_REGDOM_TYPE_INTERSECTION))
11685 goto nla_put_failure;
11686 } else {
11687 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11688 NL80211_REGDOM_TYPE_COUNTRY) ||
11689 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11690 request->alpha2))
11691 goto nla_put_failure;
11692 }
11693
11694 if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11695 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11696
11697 if (wiphy &&
11698 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11699 goto nla_put_failure;
11700
11701 if (wiphy &&
11702 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11703 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11704 goto nla_put_failure;
11705 }
11706
11707 return true;
11708
11709 nla_put_failure:
11710 return false;
11711 }
11712
11713 /*
11714 * This can happen on global regulatory changes or device specific settings
11715 * based on custom regulatory domains.
11716 */
11717 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11718 struct regulatory_request *request)
11719 {
11720 struct sk_buff *msg;
11721 void *hdr;
11722
11723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11724 if (!msg)
11725 return;
11726
11727 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11728 if (!hdr) {
11729 nlmsg_free(msg);
11730 return;
11731 }
11732
11733 if (nl80211_reg_change_event_fill(msg, request) == false)
11734 goto nla_put_failure;
11735
11736 genlmsg_end(msg, hdr);
11737
11738 rcu_read_lock();
11739 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11740 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11741 rcu_read_unlock();
11742
11743 return;
11744
11745 nla_put_failure:
11746 genlmsg_cancel(msg, hdr);
11747 nlmsg_free(msg);
11748 }
11749
11750 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11751 struct net_device *netdev,
11752 const u8 *buf, size_t len,
11753 enum nl80211_commands cmd, gfp_t gfp,
11754 int uapsd_queues)
11755 {
11756 struct sk_buff *msg;
11757 void *hdr;
11758
11759 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11760 if (!msg)
11761 return;
11762
11763 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11764 if (!hdr) {
11765 nlmsg_free(msg);
11766 return;
11767 }
11768
11769 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11770 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11771 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11772 goto nla_put_failure;
11773
11774 if (uapsd_queues >= 0) {
11775 struct nlattr *nla_wmm =
11776 nla_nest_start(msg, NL80211_ATTR_STA_WME);
11777 if (!nla_wmm)
11778 goto nla_put_failure;
11779
11780 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11781 uapsd_queues))
11782 goto nla_put_failure;
11783
11784 nla_nest_end(msg, nla_wmm);
11785 }
11786
11787 genlmsg_end(msg, hdr);
11788
11789 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11790 NL80211_MCGRP_MLME, gfp);
11791 return;
11792
11793 nla_put_failure:
11794 genlmsg_cancel(msg, hdr);
11795 nlmsg_free(msg);
11796 }
11797
11798 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11799 struct net_device *netdev, const u8 *buf,
11800 size_t len, gfp_t gfp)
11801 {
11802 nl80211_send_mlme_event(rdev, netdev, buf, len,
11803 NL80211_CMD_AUTHENTICATE, gfp, -1);
11804 }
11805
11806 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11807 struct net_device *netdev, const u8 *buf,
11808 size_t len, gfp_t gfp, int uapsd_queues)
11809 {
11810 nl80211_send_mlme_event(rdev, netdev, buf, len,
11811 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11812 }
11813
11814 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11815 struct net_device *netdev, const u8 *buf,
11816 size_t len, gfp_t gfp)
11817 {
11818 nl80211_send_mlme_event(rdev, netdev, buf, len,
11819 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11820 }
11821
11822 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11823 struct net_device *netdev, const u8 *buf,
11824 size_t len, gfp_t gfp)
11825 {
11826 nl80211_send_mlme_event(rdev, netdev, buf, len,
11827 NL80211_CMD_DISASSOCIATE, gfp, -1);
11828 }
11829
11830 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11831 size_t len)
11832 {
11833 struct wireless_dev *wdev = dev->ieee80211_ptr;
11834 struct wiphy *wiphy = wdev->wiphy;
11835 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11836 const struct ieee80211_mgmt *mgmt = (void *)buf;
11837 u32 cmd;
11838
11839 if (WARN_ON(len < 2))
11840 return;
11841
11842 if (ieee80211_is_deauth(mgmt->frame_control))
11843 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11844 else
11845 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11846
11847 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11848 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11849 }
11850 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11851
11852 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11853 struct net_device *netdev, int cmd,
11854 const u8 *addr, gfp_t gfp)
11855 {
11856 struct sk_buff *msg;
11857 void *hdr;
11858
11859 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11860 if (!msg)
11861 return;
11862
11863 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11864 if (!hdr) {
11865 nlmsg_free(msg);
11866 return;
11867 }
11868
11869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11871 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11872 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11873 goto nla_put_failure;
11874
11875 genlmsg_end(msg, hdr);
11876
11877 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11878 NL80211_MCGRP_MLME, gfp);
11879 return;
11880
11881 nla_put_failure:
11882 genlmsg_cancel(msg, hdr);
11883 nlmsg_free(msg);
11884 }
11885
11886 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11887 struct net_device *netdev, const u8 *addr,
11888 gfp_t gfp)
11889 {
11890 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11891 addr, gfp);
11892 }
11893
11894 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11895 struct net_device *netdev, const u8 *addr,
11896 gfp_t gfp)
11897 {
11898 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11899 addr, gfp);
11900 }
11901
11902 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11903 struct net_device *netdev, const u8 *bssid,
11904 const u8 *req_ie, size_t req_ie_len,
11905 const u8 *resp_ie, size_t resp_ie_len,
11906 u16 status, gfp_t gfp)
11907 {
11908 struct sk_buff *msg;
11909 void *hdr;
11910
11911 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11912 if (!msg)
11913 return;
11914
11915 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11916 if (!hdr) {
11917 nlmsg_free(msg);
11918 return;
11919 }
11920
11921 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11922 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11923 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11924 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11925 (req_ie &&
11926 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11927 (resp_ie &&
11928 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11929 goto nla_put_failure;
11930
11931 genlmsg_end(msg, hdr);
11932
11933 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11934 NL80211_MCGRP_MLME, gfp);
11935 return;
11936
11937 nla_put_failure:
11938 genlmsg_cancel(msg, hdr);
11939 nlmsg_free(msg);
11940
11941 }
11942
11943 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11944 struct net_device *netdev, const u8 *bssid,
11945 const u8 *req_ie, size_t req_ie_len,
11946 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11947 {
11948 struct sk_buff *msg;
11949 void *hdr;
11950
11951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11952 if (!msg)
11953 return;
11954
11955 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11956 if (!hdr) {
11957 nlmsg_free(msg);
11958 return;
11959 }
11960
11961 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11962 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11963 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11964 (req_ie &&
11965 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11966 (resp_ie &&
11967 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11968 goto nla_put_failure;
11969
11970 genlmsg_end(msg, hdr);
11971
11972 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11973 NL80211_MCGRP_MLME, gfp);
11974 return;
11975
11976 nla_put_failure:
11977 genlmsg_cancel(msg, hdr);
11978 nlmsg_free(msg);
11979
11980 }
11981
11982 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11983 struct net_device *netdev, u16 reason,
11984 const u8 *ie, size_t ie_len, bool from_ap)
11985 {
11986 struct sk_buff *msg;
11987 void *hdr;
11988
11989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11990 if (!msg)
11991 return;
11992
11993 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11994 if (!hdr) {
11995 nlmsg_free(msg);
11996 return;
11997 }
11998
11999 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12000 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12001 (from_ap && reason &&
12002 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
12003 (from_ap &&
12004 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
12005 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
12006 goto nla_put_failure;
12007
12008 genlmsg_end(msg, hdr);
12009
12010 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12011 NL80211_MCGRP_MLME, GFP_KERNEL);
12012 return;
12013
12014 nla_put_failure:
12015 genlmsg_cancel(msg, hdr);
12016 nlmsg_free(msg);
12017
12018 }
12019
12020 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
12021 struct net_device *netdev, const u8 *bssid,
12022 gfp_t gfp)
12023 {
12024 struct sk_buff *msg;
12025 void *hdr;
12026
12027 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12028 if (!msg)
12029 return;
12030
12031 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
12032 if (!hdr) {
12033 nlmsg_free(msg);
12034 return;
12035 }
12036
12037 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12038 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12039 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12040 goto nla_put_failure;
12041
12042 genlmsg_end(msg, hdr);
12043
12044 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12045 NL80211_MCGRP_MLME, gfp);
12046 return;
12047
12048 nla_put_failure:
12049 genlmsg_cancel(msg, hdr);
12050 nlmsg_free(msg);
12051 }
12052
12053 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
12054 const u8* ie, u8 ie_len, gfp_t gfp)
12055 {
12056 struct wireless_dev *wdev = dev->ieee80211_ptr;
12057 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12058 struct sk_buff *msg;
12059 void *hdr;
12060
12061 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
12062 return;
12063
12064 trace_cfg80211_notify_new_peer_candidate(dev, addr);
12065
12066 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12067 if (!msg)
12068 return;
12069
12070 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
12071 if (!hdr) {
12072 nlmsg_free(msg);
12073 return;
12074 }
12075
12076 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12077 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12078 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12079 (ie_len && ie &&
12080 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
12081 goto nla_put_failure;
12082
12083 genlmsg_end(msg, hdr);
12084
12085 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12086 NL80211_MCGRP_MLME, gfp);
12087 return;
12088
12089 nla_put_failure:
12090 genlmsg_cancel(msg, hdr);
12091 nlmsg_free(msg);
12092 }
12093 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
12094
12095 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
12096 struct net_device *netdev, const u8 *addr,
12097 enum nl80211_key_type key_type, int key_id,
12098 const u8 *tsc, gfp_t gfp)
12099 {
12100 struct sk_buff *msg;
12101 void *hdr;
12102
12103 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12104 if (!msg)
12105 return;
12106
12107 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
12108 if (!hdr) {
12109 nlmsg_free(msg);
12110 return;
12111 }
12112
12113 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12114 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12115 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
12116 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
12117 (key_id != -1 &&
12118 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
12119 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
12120 goto nla_put_failure;
12121
12122 genlmsg_end(msg, hdr);
12123
12124 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12125 NL80211_MCGRP_MLME, gfp);
12126 return;
12127
12128 nla_put_failure:
12129 genlmsg_cancel(msg, hdr);
12130 nlmsg_free(msg);
12131 }
12132
12133 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
12134 struct ieee80211_channel *channel_before,
12135 struct ieee80211_channel *channel_after)
12136 {
12137 struct sk_buff *msg;
12138 void *hdr;
12139 struct nlattr *nl_freq;
12140
12141 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
12142 if (!msg)
12143 return;
12144
12145 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
12146 if (!hdr) {
12147 nlmsg_free(msg);
12148 return;
12149 }
12150
12151 /*
12152 * Since we are applying the beacon hint to a wiphy we know its
12153 * wiphy_idx is valid
12154 */
12155 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
12156 goto nla_put_failure;
12157
12158 /* Before */
12159 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
12160 if (!nl_freq)
12161 goto nla_put_failure;
12162 if (nl80211_msg_put_channel(msg, channel_before, false))
12163 goto nla_put_failure;
12164 nla_nest_end(msg, nl_freq);
12165
12166 /* After */
12167 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
12168 if (!nl_freq)
12169 goto nla_put_failure;
12170 if (nl80211_msg_put_channel(msg, channel_after, false))
12171 goto nla_put_failure;
12172 nla_nest_end(msg, nl_freq);
12173
12174 genlmsg_end(msg, hdr);
12175
12176 rcu_read_lock();
12177 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
12178 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
12179 rcu_read_unlock();
12180
12181 return;
12182
12183 nla_put_failure:
12184 genlmsg_cancel(msg, hdr);
12185 nlmsg_free(msg);
12186 }
12187
12188 static void nl80211_send_remain_on_chan_event(
12189 int cmd, struct cfg80211_registered_device *rdev,
12190 struct wireless_dev *wdev, u64 cookie,
12191 struct ieee80211_channel *chan,
12192 unsigned int duration, gfp_t gfp)
12193 {
12194 struct sk_buff *msg;
12195 void *hdr;
12196
12197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12198 if (!msg)
12199 return;
12200
12201 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12202 if (!hdr) {
12203 nlmsg_free(msg);
12204 return;
12205 }
12206
12207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12208 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12209 wdev->netdev->ifindex)) ||
12210 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12211 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
12212 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
12213 NL80211_CHAN_NO_HT) ||
12214 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
12215 goto nla_put_failure;
12216
12217 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
12218 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
12219 goto nla_put_failure;
12220
12221 genlmsg_end(msg, hdr);
12222
12223 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12224 NL80211_MCGRP_MLME, gfp);
12225 return;
12226
12227 nla_put_failure:
12228 genlmsg_cancel(msg, hdr);
12229 nlmsg_free(msg);
12230 }
12231
12232 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
12233 struct ieee80211_channel *chan,
12234 unsigned int duration, gfp_t gfp)
12235 {
12236 struct wiphy *wiphy = wdev->wiphy;
12237 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12238
12239 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
12240 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
12241 rdev, wdev, cookie, chan,
12242 duration, gfp);
12243 }
12244 EXPORT_SYMBOL(cfg80211_ready_on_channel);
12245
12246 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
12247 struct ieee80211_channel *chan,
12248 gfp_t gfp)
12249 {
12250 struct wiphy *wiphy = wdev->wiphy;
12251 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12252
12253 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
12254 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
12255 rdev, wdev, cookie, chan, 0, gfp);
12256 }
12257 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
12258
12259 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
12260 struct station_info *sinfo, gfp_t gfp)
12261 {
12262 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12263 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12264 struct sk_buff *msg;
12265
12266 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
12267
12268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12269 if (!msg)
12270 return;
12271
12272 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
12273 rdev, dev, mac_addr, sinfo) < 0) {
12274 nlmsg_free(msg);
12275 return;
12276 }
12277
12278 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12279 NL80211_MCGRP_MLME, gfp);
12280 }
12281 EXPORT_SYMBOL(cfg80211_new_sta);
12282
12283 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
12284 struct station_info *sinfo, gfp_t gfp)
12285 {
12286 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12287 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12288 struct sk_buff *msg;
12289 struct station_info empty_sinfo = {};
12290
12291 if (!sinfo)
12292 sinfo = &empty_sinfo;
12293
12294 trace_cfg80211_del_sta(dev, mac_addr);
12295
12296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12297 if (!msg)
12298 return;
12299
12300 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
12301 rdev, dev, mac_addr, sinfo) < 0) {
12302 nlmsg_free(msg);
12303 return;
12304 }
12305
12306 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12307 NL80211_MCGRP_MLME, gfp);
12308 }
12309 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
12310
12311 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
12312 enum nl80211_connect_failed_reason reason,
12313 gfp_t gfp)
12314 {
12315 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
12316 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12317 struct sk_buff *msg;
12318 void *hdr;
12319
12320 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
12321 if (!msg)
12322 return;
12323
12324 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
12325 if (!hdr) {
12326 nlmsg_free(msg);
12327 return;
12328 }
12329
12330 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12331 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
12332 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
12333 goto nla_put_failure;
12334
12335 genlmsg_end(msg, hdr);
12336
12337 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12338 NL80211_MCGRP_MLME, gfp);
12339 return;
12340
12341 nla_put_failure:
12342 genlmsg_cancel(msg, hdr);
12343 nlmsg_free(msg);
12344 }
12345 EXPORT_SYMBOL(cfg80211_conn_failed);
12346
12347 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
12348 const u8 *addr, gfp_t gfp)
12349 {
12350 struct wireless_dev *wdev = dev->ieee80211_ptr;
12351 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12352 struct sk_buff *msg;
12353 void *hdr;
12354 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
12355
12356 if (!nlportid)
12357 return false;
12358
12359 msg = nlmsg_new(100, gfp);
12360 if (!msg)
12361 return true;
12362
12363 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
12364 if (!hdr) {
12365 nlmsg_free(msg);
12366 return true;
12367 }
12368
12369 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12370 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12371 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
12372 goto nla_put_failure;
12373
12374 genlmsg_end(msg, hdr);
12375 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12376 return true;
12377
12378 nla_put_failure:
12379 genlmsg_cancel(msg, hdr);
12380 nlmsg_free(msg);
12381 return true;
12382 }
12383
12384 bool cfg80211_rx_spurious_frame(struct net_device *dev,
12385 const u8 *addr, gfp_t gfp)
12386 {
12387 struct wireless_dev *wdev = dev->ieee80211_ptr;
12388 bool ret;
12389
12390 trace_cfg80211_rx_spurious_frame(dev, addr);
12391
12392 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12393 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
12394 trace_cfg80211_return_bool(false);
12395 return false;
12396 }
12397 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
12398 addr, gfp);
12399 trace_cfg80211_return_bool(ret);
12400 return ret;
12401 }
12402 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
12403
12404 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
12405 const u8 *addr, gfp_t gfp)
12406 {
12407 struct wireless_dev *wdev = dev->ieee80211_ptr;
12408 bool ret;
12409
12410 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
12411
12412 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
12413 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
12414 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
12415 trace_cfg80211_return_bool(false);
12416 return false;
12417 }
12418 ret = __nl80211_unexpected_frame(dev,
12419 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
12420 addr, gfp);
12421 trace_cfg80211_return_bool(ret);
12422 return ret;
12423 }
12424 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12425
12426 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12427 struct wireless_dev *wdev, u32 nlportid,
12428 int freq, int sig_dbm,
12429 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12430 {
12431 struct net_device *netdev = wdev->netdev;
12432 struct sk_buff *msg;
12433 void *hdr;
12434
12435 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12436 if (!msg)
12437 return -ENOMEM;
12438
12439 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12440 if (!hdr) {
12441 nlmsg_free(msg);
12442 return -ENOMEM;
12443 }
12444
12445 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12446 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12447 netdev->ifindex)) ||
12448 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12449 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12450 (sig_dbm &&
12451 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12452 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12453 (flags &&
12454 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12455 goto nla_put_failure;
12456
12457 genlmsg_end(msg, hdr);
12458
12459 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12460
12461 nla_put_failure:
12462 genlmsg_cancel(msg, hdr);
12463 nlmsg_free(msg);
12464 return -ENOBUFS;
12465 }
12466
12467 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12468 const u8 *buf, size_t len, bool ack, gfp_t gfp)
12469 {
12470 struct wiphy *wiphy = wdev->wiphy;
12471 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12472 struct net_device *netdev = wdev->netdev;
12473 struct sk_buff *msg;
12474 void *hdr;
12475
12476 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12477
12478 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12479 if (!msg)
12480 return;
12481
12482 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12483 if (!hdr) {
12484 nlmsg_free(msg);
12485 return;
12486 }
12487
12488 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12489 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12490 netdev->ifindex)) ||
12491 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12492 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12493 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12494 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12495 goto nla_put_failure;
12496
12497 genlmsg_end(msg, hdr);
12498
12499 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12500 NL80211_MCGRP_MLME, gfp);
12501 return;
12502
12503 nla_put_failure:
12504 genlmsg_cancel(msg, hdr);
12505 nlmsg_free(msg);
12506 }
12507 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12508
12509 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12510 const char *mac, gfp_t gfp)
12511 {
12512 struct wireless_dev *wdev = dev->ieee80211_ptr;
12513 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12514 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12515 void **cb;
12516
12517 if (!msg)
12518 return NULL;
12519
12520 cb = (void **)msg->cb;
12521
12522 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12523 if (!cb[0]) {
12524 nlmsg_free(msg);
12525 return NULL;
12526 }
12527
12528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12530 goto nla_put_failure;
12531
12532 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12533 goto nla_put_failure;
12534
12535 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12536 if (!cb[1])
12537 goto nla_put_failure;
12538
12539 cb[2] = rdev;
12540
12541 return msg;
12542 nla_put_failure:
12543 nlmsg_free(msg);
12544 return NULL;
12545 }
12546
12547 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12548 {
12549 void **cb = (void **)msg->cb;
12550 struct cfg80211_registered_device *rdev = cb[2];
12551
12552 nla_nest_end(msg, cb[1]);
12553 genlmsg_end(msg, cb[0]);
12554
12555 memset(msg->cb, 0, sizeof(msg->cb));
12556
12557 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12558 NL80211_MCGRP_MLME, gfp);
12559 }
12560
12561 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12562 enum nl80211_cqm_rssi_threshold_event rssi_event,
12563 gfp_t gfp)
12564 {
12565 struct sk_buff *msg;
12566
12567 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12568
12569 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12570 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12571 return;
12572
12573 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12574 if (!msg)
12575 return;
12576
12577 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12578 rssi_event))
12579 goto nla_put_failure;
12580
12581 cfg80211_send_cqm(msg, gfp);
12582
12583 return;
12584
12585 nla_put_failure:
12586 nlmsg_free(msg);
12587 }
12588 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12589
12590 void cfg80211_cqm_txe_notify(struct net_device *dev,
12591 const u8 *peer, u32 num_packets,
12592 u32 rate, u32 intvl, gfp_t gfp)
12593 {
12594 struct sk_buff *msg;
12595
12596 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12597 if (!msg)
12598 return;
12599
12600 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12601 goto nla_put_failure;
12602
12603 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12604 goto nla_put_failure;
12605
12606 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12607 goto nla_put_failure;
12608
12609 cfg80211_send_cqm(msg, gfp);
12610 return;
12611
12612 nla_put_failure:
12613 nlmsg_free(msg);
12614 }
12615 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12616
12617 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12618 const u8 *peer, u32 num_packets, gfp_t gfp)
12619 {
12620 struct sk_buff *msg;
12621
12622 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12623
12624 msg = cfg80211_prepare_cqm(dev, peer, gfp);
12625 if (!msg)
12626 return;
12627
12628 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12629 goto nla_put_failure;
12630
12631 cfg80211_send_cqm(msg, gfp);
12632 return;
12633
12634 nla_put_failure:
12635 nlmsg_free(msg);
12636 }
12637 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12638
12639 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12640 {
12641 struct sk_buff *msg;
12642
12643 msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12644 if (!msg)
12645 return;
12646
12647 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12648 goto nla_put_failure;
12649
12650 cfg80211_send_cqm(msg, gfp);
12651 return;
12652
12653 nla_put_failure:
12654 nlmsg_free(msg);
12655 }
12656 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12657
12658 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12659 struct net_device *netdev, const u8 *bssid,
12660 const u8 *replay_ctr, gfp_t gfp)
12661 {
12662 struct sk_buff *msg;
12663 struct nlattr *rekey_attr;
12664 void *hdr;
12665
12666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12667 if (!msg)
12668 return;
12669
12670 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12671 if (!hdr) {
12672 nlmsg_free(msg);
12673 return;
12674 }
12675
12676 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12677 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12678 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12679 goto nla_put_failure;
12680
12681 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12682 if (!rekey_attr)
12683 goto nla_put_failure;
12684
12685 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12686 NL80211_REPLAY_CTR_LEN, replay_ctr))
12687 goto nla_put_failure;
12688
12689 nla_nest_end(msg, rekey_attr);
12690
12691 genlmsg_end(msg, hdr);
12692
12693 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12694 NL80211_MCGRP_MLME, gfp);
12695 return;
12696
12697 nla_put_failure:
12698 genlmsg_cancel(msg, hdr);
12699 nlmsg_free(msg);
12700 }
12701
12702 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12703 const u8 *replay_ctr, gfp_t gfp)
12704 {
12705 struct wireless_dev *wdev = dev->ieee80211_ptr;
12706 struct wiphy *wiphy = wdev->wiphy;
12707 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12708
12709 trace_cfg80211_gtk_rekey_notify(dev, bssid);
12710 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12711 }
12712 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12713
12714 static void
12715 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12716 struct net_device *netdev, int index,
12717 const u8 *bssid, bool preauth, gfp_t gfp)
12718 {
12719 struct sk_buff *msg;
12720 struct nlattr *attr;
12721 void *hdr;
12722
12723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12724 if (!msg)
12725 return;
12726
12727 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12728 if (!hdr) {
12729 nlmsg_free(msg);
12730 return;
12731 }
12732
12733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12734 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12735 goto nla_put_failure;
12736
12737 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12738 if (!attr)
12739 goto nla_put_failure;
12740
12741 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12742 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12743 (preauth &&
12744 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12745 goto nla_put_failure;
12746
12747 nla_nest_end(msg, attr);
12748
12749 genlmsg_end(msg, hdr);
12750
12751 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12752 NL80211_MCGRP_MLME, gfp);
12753 return;
12754
12755 nla_put_failure:
12756 genlmsg_cancel(msg, hdr);
12757 nlmsg_free(msg);
12758 }
12759
12760 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12761 const u8 *bssid, bool preauth, gfp_t gfp)
12762 {
12763 struct wireless_dev *wdev = dev->ieee80211_ptr;
12764 struct wiphy *wiphy = wdev->wiphy;
12765 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12766
12767 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12768 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12769 }
12770 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12771
12772 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12773 struct net_device *netdev,
12774 struct cfg80211_chan_def *chandef,
12775 gfp_t gfp,
12776 enum nl80211_commands notif,
12777 u8 count)
12778 {
12779 struct sk_buff *msg;
12780 void *hdr;
12781
12782 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12783 if (!msg)
12784 return;
12785
12786 hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12787 if (!hdr) {
12788 nlmsg_free(msg);
12789 return;
12790 }
12791
12792 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12793 goto nla_put_failure;
12794
12795 if (nl80211_send_chandef(msg, chandef))
12796 goto nla_put_failure;
12797
12798 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12799 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12800 goto nla_put_failure;
12801
12802 genlmsg_end(msg, hdr);
12803
12804 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12805 NL80211_MCGRP_MLME, gfp);
12806 return;
12807
12808 nla_put_failure:
12809 genlmsg_cancel(msg, hdr);
12810 nlmsg_free(msg);
12811 }
12812
12813 void cfg80211_ch_switch_notify(struct net_device *dev,
12814 struct cfg80211_chan_def *chandef)
12815 {
12816 struct wireless_dev *wdev = dev->ieee80211_ptr;
12817 struct wiphy *wiphy = wdev->wiphy;
12818 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12819
12820 ASSERT_WDEV_LOCK(wdev);
12821
12822 trace_cfg80211_ch_switch_notify(dev, chandef);
12823
12824 wdev->chandef = *chandef;
12825 wdev->preset_chandef = *chandef;
12826 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12827 NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12828 }
12829 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12830
12831 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12832 struct cfg80211_chan_def *chandef,
12833 u8 count)
12834 {
12835 struct wireless_dev *wdev = dev->ieee80211_ptr;
12836 struct wiphy *wiphy = wdev->wiphy;
12837 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12838
12839 trace_cfg80211_ch_switch_started_notify(dev, chandef);
12840
12841 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12842 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12843 }
12844 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12845
12846 void
12847 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12848 const struct cfg80211_chan_def *chandef,
12849 enum nl80211_radar_event event,
12850 struct net_device *netdev, gfp_t gfp)
12851 {
12852 struct sk_buff *msg;
12853 void *hdr;
12854
12855 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12856 if (!msg)
12857 return;
12858
12859 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12860 if (!hdr) {
12861 nlmsg_free(msg);
12862 return;
12863 }
12864
12865 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12866 goto nla_put_failure;
12867
12868 /* NOP and radar events don't need a netdev parameter */
12869 if (netdev) {
12870 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12871
12872 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12873 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12874 goto nla_put_failure;
12875 }
12876
12877 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12878 goto nla_put_failure;
12879
12880 if (nl80211_send_chandef(msg, chandef))
12881 goto nla_put_failure;
12882
12883 genlmsg_end(msg, hdr);
12884
12885 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12886 NL80211_MCGRP_MLME, gfp);
12887 return;
12888
12889 nla_put_failure:
12890 genlmsg_cancel(msg, hdr);
12891 nlmsg_free(msg);
12892 }
12893
12894 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12895 u64 cookie, bool acked, gfp_t gfp)
12896 {
12897 struct wireless_dev *wdev = dev->ieee80211_ptr;
12898 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12899 struct sk_buff *msg;
12900 void *hdr;
12901
12902 trace_cfg80211_probe_status(dev, addr, cookie, acked);
12903
12904 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12905
12906 if (!msg)
12907 return;
12908
12909 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12910 if (!hdr) {
12911 nlmsg_free(msg);
12912 return;
12913 }
12914
12915 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12916 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12917 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12918 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12919 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12920 goto nla_put_failure;
12921
12922 genlmsg_end(msg, hdr);
12923
12924 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12925 NL80211_MCGRP_MLME, gfp);
12926 return;
12927
12928 nla_put_failure:
12929 genlmsg_cancel(msg, hdr);
12930 nlmsg_free(msg);
12931 }
12932 EXPORT_SYMBOL(cfg80211_probe_status);
12933
12934 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12935 const u8 *frame, size_t len,
12936 int freq, int sig_dbm)
12937 {
12938 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12939 struct sk_buff *msg;
12940 void *hdr;
12941 struct cfg80211_beacon_registration *reg;
12942
12943 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12944
12945 spin_lock_bh(&rdev->beacon_registrations_lock);
12946 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12947 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12948 if (!msg) {
12949 spin_unlock_bh(&rdev->beacon_registrations_lock);
12950 return;
12951 }
12952
12953 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12954 if (!hdr)
12955 goto nla_put_failure;
12956
12957 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12958 (freq &&
12959 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12960 (sig_dbm &&
12961 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12962 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12963 goto nla_put_failure;
12964
12965 genlmsg_end(msg, hdr);
12966
12967 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12968 }
12969 spin_unlock_bh(&rdev->beacon_registrations_lock);
12970 return;
12971
12972 nla_put_failure:
12973 spin_unlock_bh(&rdev->beacon_registrations_lock);
12974 if (hdr)
12975 genlmsg_cancel(msg, hdr);
12976 nlmsg_free(msg);
12977 }
12978 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12979
12980 #ifdef CONFIG_PM
12981 static int cfg80211_net_detect_results(struct sk_buff *msg,
12982 struct cfg80211_wowlan_wakeup *wakeup)
12983 {
12984 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12985 struct nlattr *nl_results, *nl_match, *nl_freqs;
12986 int i, j;
12987
12988 nl_results = nla_nest_start(
12989 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12990 if (!nl_results)
12991 return -EMSGSIZE;
12992
12993 for (i = 0; i < nd->n_matches; i++) {
12994 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12995
12996 nl_match = nla_nest_start(msg, i);
12997 if (!nl_match)
12998 break;
12999
13000 /* The SSID attribute is optional in nl80211, but for
13001 * simplicity reasons it's always present in the
13002 * cfg80211 structure. If a driver can't pass the
13003 * SSID, that needs to be changed. A zero length SSID
13004 * is still a valid SSID (wildcard), so it cannot be
13005 * used for this purpose.
13006 */
13007 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
13008 match->ssid.ssid)) {
13009 nla_nest_cancel(msg, nl_match);
13010 goto out;
13011 }
13012
13013 if (match->n_channels) {
13014 nl_freqs = nla_nest_start(
13015 msg, NL80211_ATTR_SCAN_FREQUENCIES);
13016 if (!nl_freqs) {
13017 nla_nest_cancel(msg, nl_match);
13018 goto out;
13019 }
13020
13021 for (j = 0; j < match->n_channels; j++) {
13022 if (nla_put_u32(msg, j, match->channels[j])) {
13023 nla_nest_cancel(msg, nl_freqs);
13024 nla_nest_cancel(msg, nl_match);
13025 goto out;
13026 }
13027 }
13028
13029 nla_nest_end(msg, nl_freqs);
13030 }
13031
13032 nla_nest_end(msg, nl_match);
13033 }
13034
13035 out:
13036 nla_nest_end(msg, nl_results);
13037 return 0;
13038 }
13039
13040 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
13041 struct cfg80211_wowlan_wakeup *wakeup,
13042 gfp_t gfp)
13043 {
13044 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13045 struct sk_buff *msg;
13046 void *hdr;
13047 int size = 200;
13048
13049 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
13050
13051 if (wakeup)
13052 size += wakeup->packet_present_len;
13053
13054 msg = nlmsg_new(size, gfp);
13055 if (!msg)
13056 return;
13057
13058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
13059 if (!hdr)
13060 goto free_msg;
13061
13062 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13063 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13064 goto free_msg;
13065
13066 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13067 wdev->netdev->ifindex))
13068 goto free_msg;
13069
13070 if (wakeup) {
13071 struct nlattr *reasons;
13072
13073 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
13074 if (!reasons)
13075 goto free_msg;
13076
13077 if (wakeup->disconnect &&
13078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
13079 goto free_msg;
13080 if (wakeup->magic_pkt &&
13081 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
13082 goto free_msg;
13083 if (wakeup->gtk_rekey_failure &&
13084 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
13085 goto free_msg;
13086 if (wakeup->eap_identity_req &&
13087 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
13088 goto free_msg;
13089 if (wakeup->four_way_handshake &&
13090 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
13091 goto free_msg;
13092 if (wakeup->rfkill_release &&
13093 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
13094 goto free_msg;
13095
13096 if (wakeup->pattern_idx >= 0 &&
13097 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
13098 wakeup->pattern_idx))
13099 goto free_msg;
13100
13101 if (wakeup->tcp_match &&
13102 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
13103 goto free_msg;
13104
13105 if (wakeup->tcp_connlost &&
13106 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
13107 goto free_msg;
13108
13109 if (wakeup->tcp_nomoretokens &&
13110 nla_put_flag(msg,
13111 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
13112 goto free_msg;
13113
13114 if (wakeup->packet) {
13115 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
13116 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
13117
13118 if (!wakeup->packet_80211) {
13119 pkt_attr =
13120 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
13121 len_attr =
13122 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
13123 }
13124
13125 if (wakeup->packet_len &&
13126 nla_put_u32(msg, len_attr, wakeup->packet_len))
13127 goto free_msg;
13128
13129 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
13130 wakeup->packet))
13131 goto free_msg;
13132 }
13133
13134 if (wakeup->net_detect &&
13135 cfg80211_net_detect_results(msg, wakeup))
13136 goto free_msg;
13137
13138 nla_nest_end(msg, reasons);
13139 }
13140
13141 genlmsg_end(msg, hdr);
13142
13143 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13144 NL80211_MCGRP_MLME, gfp);
13145 return;
13146
13147 free_msg:
13148 nlmsg_free(msg);
13149 }
13150 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
13151 #endif
13152
13153 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
13154 enum nl80211_tdls_operation oper,
13155 u16 reason_code, gfp_t gfp)
13156 {
13157 struct wireless_dev *wdev = dev->ieee80211_ptr;
13158 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
13159 struct sk_buff *msg;
13160 void *hdr;
13161
13162 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
13163 reason_code);
13164
13165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13166 if (!msg)
13167 return;
13168
13169 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
13170 if (!hdr) {
13171 nlmsg_free(msg);
13172 return;
13173 }
13174
13175 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13176 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
13177 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
13178 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
13179 (reason_code > 0 &&
13180 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
13181 goto nla_put_failure;
13182
13183 genlmsg_end(msg, hdr);
13184
13185 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13186 NL80211_MCGRP_MLME, gfp);
13187 return;
13188
13189 nla_put_failure:
13190 genlmsg_cancel(msg, hdr);
13191 nlmsg_free(msg);
13192 }
13193 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
13194
13195 static int nl80211_netlink_notify(struct notifier_block * nb,
13196 unsigned long state,
13197 void *_notify)
13198 {
13199 struct netlink_notify *notify = _notify;
13200 struct cfg80211_registered_device *rdev;
13201 struct wireless_dev *wdev;
13202 struct cfg80211_beacon_registration *reg, *tmp;
13203
13204 if (state != NETLINK_URELEASE)
13205 return NOTIFY_DONE;
13206
13207 rcu_read_lock();
13208
13209 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
13210 bool schedule_destroy_work = false;
13211 bool schedule_scan_stop = false;
13212 struct cfg80211_sched_scan_request *sched_scan_req =
13213 rcu_dereference(rdev->sched_scan_req);
13214
13215 if (sched_scan_req && notify->portid &&
13216 sched_scan_req->owner_nlportid == notify->portid)
13217 schedule_scan_stop = true;
13218
13219 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
13220 cfg80211_mlme_unregister_socket(wdev, notify->portid);
13221
13222 if (wdev->owner_nlportid == notify->portid)
13223 schedule_destroy_work = true;
13224 }
13225
13226 spin_lock_bh(&rdev->beacon_registrations_lock);
13227 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
13228 list) {
13229 if (reg->nlportid == notify->portid) {
13230 list_del(&reg->list);
13231 kfree(reg);
13232 break;
13233 }
13234 }
13235 spin_unlock_bh(&rdev->beacon_registrations_lock);
13236
13237 if (schedule_destroy_work) {
13238 struct cfg80211_iface_destroy *destroy;
13239
13240 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
13241 if (destroy) {
13242 destroy->nlportid = notify->portid;
13243 spin_lock(&rdev->destroy_list_lock);
13244 list_add(&destroy->list, &rdev->destroy_list);
13245 spin_unlock(&rdev->destroy_list_lock);
13246 schedule_work(&rdev->destroy_work);
13247 }
13248 } else if (schedule_scan_stop) {
13249 sched_scan_req->owner_nlportid = 0;
13250
13251 if (rdev->ops->sched_scan_stop &&
13252 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
13253 schedule_work(&rdev->sched_scan_stop_wk);
13254 }
13255 }
13256
13257 rcu_read_unlock();
13258
13259 /*
13260 * It is possible that the user space process that is controlling the
13261 * indoor setting disappeared, so notify the regulatory core.
13262 */
13263 regulatory_netlink_notify(notify->portid);
13264 return NOTIFY_OK;
13265 }
13266
13267 static struct notifier_block nl80211_netlink_notifier = {
13268 .notifier_call = nl80211_netlink_notify,
13269 };
13270
13271 void cfg80211_ft_event(struct net_device *netdev,
13272 struct cfg80211_ft_event_params *ft_event)
13273 {
13274 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
13275 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13276 struct sk_buff *msg;
13277 void *hdr;
13278
13279 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
13280
13281 if (!ft_event->target_ap)
13282 return;
13283
13284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13285 if (!msg)
13286 return;
13287
13288 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
13289 if (!hdr)
13290 goto out;
13291
13292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
13294 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
13295 goto out;
13296
13297 if (ft_event->ies &&
13298 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
13299 goto out;
13300 if (ft_event->ric_ies &&
13301 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
13302 ft_event->ric_ies))
13303 goto out;
13304
13305 genlmsg_end(msg, hdr);
13306
13307 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
13308 NL80211_MCGRP_MLME, GFP_KERNEL);
13309 return;
13310 out:
13311 nlmsg_free(msg);
13312 }
13313 EXPORT_SYMBOL(cfg80211_ft_event);
13314
13315 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
13316 {
13317 struct cfg80211_registered_device *rdev;
13318 struct sk_buff *msg;
13319 void *hdr;
13320 u32 nlportid;
13321
13322 rdev = wiphy_to_rdev(wdev->wiphy);
13323 if (!rdev->crit_proto_nlportid)
13324 return;
13325
13326 nlportid = rdev->crit_proto_nlportid;
13327 rdev->crit_proto_nlportid = 0;
13328
13329 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13330 if (!msg)
13331 return;
13332
13333 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
13334 if (!hdr)
13335 goto nla_put_failure;
13336
13337 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13338 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13339 goto nla_put_failure;
13340
13341 genlmsg_end(msg, hdr);
13342
13343 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
13344 return;
13345
13346 nla_put_failure:
13347 if (hdr)
13348 genlmsg_cancel(msg, hdr);
13349 nlmsg_free(msg);
13350
13351 }
13352 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
13353
13354 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
13355 {
13356 struct wiphy *wiphy = wdev->wiphy;
13357 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13358 struct sk_buff *msg;
13359 void *hdr;
13360
13361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13362 if (!msg)
13363 return;
13364
13365 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
13366 if (!hdr)
13367 goto out;
13368
13369 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13370 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
13371 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
13372 goto out;
13373
13374 genlmsg_end(msg, hdr);
13375
13376 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
13377 NL80211_MCGRP_MLME, GFP_KERNEL);
13378 return;
13379 out:
13380 nlmsg_free(msg);
13381 }
13382
13383 /* initialisation/exit functions */
13384
13385 int nl80211_init(void)
13386 {
13387 int err;
13388
13389 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
13390 nl80211_mcgrps);
13391 if (err)
13392 return err;
13393
13394 err = netlink_register_notifier(&nl80211_netlink_notifier);
13395 if (err)
13396 goto err_out;
13397
13398 return 0;
13399 err_out:
13400 genl_unregister_family(&nl80211_fam);
13401 return err;
13402 }
13403
13404 void nl80211_exit(void)
13405 {
13406 netlink_unregister_notifier(&nl80211_netlink_notifier);
13407 genl_unregister_family(&nl80211_fam);
13408 }
Linux kernel - Deliverables
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